CA2527638C - Pipe joint - Google Patents
Pipe joint Download PDFInfo
- Publication number
- CA2527638C CA2527638C CA2527638A CA2527638A CA2527638C CA 2527638 C CA2527638 C CA 2527638C CA 2527638 A CA2527638 A CA 2527638A CA 2527638 A CA2527638 A CA 2527638A CA 2527638 C CA2527638 C CA 2527638C
- Authority
- CA
- Canada
- Prior art keywords
- pipe
- clamp ring
- diameter
- expansion piece
- slit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/02—Hose-clips
- F16L33/03—Self-locking elastic clips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/22—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts
- F16L33/227—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with means not mentioned in the preceding groups for gripping the hose between inner and outer parts the hose being introduced into or onto the connecting member and automatically locked
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
- F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
- F16L37/088—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of a split elastic ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
- F16L47/12—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with additional locking means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2201/00—Special arrangements for pipe couplings
- F16L2201/10—Indicators for correct coupling
Abstract
A pipe joint provided with a joint main body having an insertion cylinder portion inserted to an end portion of a pipe to be connected, a clamp ring having a slit to fasten the end portion of the pipe inserted to the insertion cylinder portion by elastic fastening force, a diameter-expansion piece, releasable as to jump outward, held within the slit to expand the clamp ring against elastic force of the clamp ring, and a restriction sleeve covering the clamp ring as to restrict the outward jump of the diameter-expansion piece. And, a pipe-insertion detector, detecting the insertion of the pipe to a predetermined depth to release the restriction, is provided.
Description
TITLE OF THE INVENTION
PIPE JOINT
BACKGROUND OF THE INVENTION
This invention relates to a pipe joint.
A conventional pipe joint to connect pipes of synthetic resin for water supply is provided with a joint main body having an insertion cylinder portion inserted to an end portion of a pipe, a clamp ring having a slit to fasten the end portion of the pipe inserted to the insertion cylinder portion by elastic fastening force, and a diameter-expansion piece releasably held within the slit as to expand a fastening ring against the elastic force of the clamp ring and released when the pipe is inserted, In this conventional pipe joint, a defective work, in which the insertion of the pipe is not enough despite the release of the diameter-expansion piece, may be conducted. And, the insertion depth of the pipe may be excessively small, resistance against drawing may be made weak, and the insertion depth can not be regulated because the diameter-expansion piece is held by inner end portion in an axis direction of the clamp ring. And, the clamp ring may become tapered as the inner diameter of the outer end portion (to which the pipe is inserted) in the axis direction is small because the diameter-expansion piece is held by inner end portion in an axis direction of the clamp ring. This makes holding work (insertion work) of the diameter-expansion piece difficult because the insertion of the end portion of the pipe is hard to conduct, and the clamp ring is required to be preliminarily expanded large.
It is therefore an object of an aspect of the present invention to provide a pipe joint with which pipes are easily connected, misconnection of the piping is certainly checked, and defective work can be prevented beforehand. Further, it is also an object of an aspect to provide a pipe joint with which the clamp ring is expanded uniformly in the axis direction (as not to be tapered) and the pipe is smoothly inserted.
An aspect of the invention is as follows:
A pipe joint comprising a joint main body having an insertion cylinder portion inserted to an end portion of a pipe to be connected, a clamp ring with a slit to fasten the end portion of the pipe mounted to the insertion cylinder portion by elastic fastening force, a diameter-expansion piece, held within the slit releasably when jumping outward, to expand the clamp ring against elastic force of the clamp ring, a restriction sleeve covering the clamp ring as to restrict outward jumping movement of the diameter-expansion piece, and a pipe-insertion detector to detect the insertion of the pipe to a predetermined depth and release or make releasable the restriction.
In an aspect of the present invention there is provided a pipe joint comprising:
a joint main body having a cylindrical insertion portion configured for insertion into an end portion of a pipe;
a clamp ring receiving the cylindrical insertion portion therethrough and having a slit that defines facing ends of the clamp ring;
a diameter-expansion piece releasably held between the facing ends of the clamp ring thereby to expand the clamp ring against its clamping force; and a restriction sleeve associated with the joint main body and configured to block outward release of the diameter-expansion piece from between the facing ends of the clamp ring, the restriction sleeve further configured to slide along the joint main body when pushed by the pipe during insertion to a position at which outward release of the diameter-expansion piece is unblocked;
wherein when unblocked the diameter-expansion piece is caused by the clamping force of the clamp ring to jump radially outward from between the facing ends permitting the clamp ring to contract to clamp against the pipe.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be described with reference to the accompanying drawings, in which:
Figure 1 is a schematic cross-sectional front view showing a first embodiment of a pipe joint of the present invention;
Figure 2 is a cross-sectional view of x - x line in Figure 1;
Figure 3A is an explanatory view of force working on a diameter-expansion piece;
PIPE JOINT
BACKGROUND OF THE INVENTION
This invention relates to a pipe joint.
A conventional pipe joint to connect pipes of synthetic resin for water supply is provided with a joint main body having an insertion cylinder portion inserted to an end portion of a pipe, a clamp ring having a slit to fasten the end portion of the pipe inserted to the insertion cylinder portion by elastic fastening force, and a diameter-expansion piece releasably held within the slit as to expand a fastening ring against the elastic force of the clamp ring and released when the pipe is inserted, In this conventional pipe joint, a defective work, in which the insertion of the pipe is not enough despite the release of the diameter-expansion piece, may be conducted. And, the insertion depth of the pipe may be excessively small, resistance against drawing may be made weak, and the insertion depth can not be regulated because the diameter-expansion piece is held by inner end portion in an axis direction of the clamp ring. And, the clamp ring may become tapered as the inner diameter of the outer end portion (to which the pipe is inserted) in the axis direction is small because the diameter-expansion piece is held by inner end portion in an axis direction of the clamp ring. This makes holding work (insertion work) of the diameter-expansion piece difficult because the insertion of the end portion of the pipe is hard to conduct, and the clamp ring is required to be preliminarily expanded large.
It is therefore an object of an aspect of the present invention to provide a pipe joint with which pipes are easily connected, misconnection of the piping is certainly checked, and defective work can be prevented beforehand. Further, it is also an object of an aspect to provide a pipe joint with which the clamp ring is expanded uniformly in the axis direction (as not to be tapered) and the pipe is smoothly inserted.
An aspect of the invention is as follows:
A pipe joint comprising a joint main body having an insertion cylinder portion inserted to an end portion of a pipe to be connected, a clamp ring with a slit to fasten the end portion of the pipe mounted to the insertion cylinder portion by elastic fastening force, a diameter-expansion piece, held within the slit releasably when jumping outward, to expand the clamp ring against elastic force of the clamp ring, a restriction sleeve covering the clamp ring as to restrict outward jumping movement of the diameter-expansion piece, and a pipe-insertion detector to detect the insertion of the pipe to a predetermined depth and release or make releasable the restriction.
In an aspect of the present invention there is provided a pipe joint comprising:
a joint main body having a cylindrical insertion portion configured for insertion into an end portion of a pipe;
a clamp ring receiving the cylindrical insertion portion therethrough and having a slit that defines facing ends of the clamp ring;
a diameter-expansion piece releasably held between the facing ends of the clamp ring thereby to expand the clamp ring against its clamping force; and a restriction sleeve associated with the joint main body and configured to block outward release of the diameter-expansion piece from between the facing ends of the clamp ring, the restriction sleeve further configured to slide along the joint main body when pushed by the pipe during insertion to a position at which outward release of the diameter-expansion piece is unblocked;
wherein when unblocked the diameter-expansion piece is caused by the clamping force of the clamp ring to jump radially outward from between the facing ends permitting the clamp ring to contract to clamp against the pipe.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be described with reference to the accompanying drawings, in which:
Figure 1 is a schematic cross-sectional front view showing a first embodiment of a pipe joint of the present invention;
Figure 2 is a cross-sectional view of x - x line in Figure 1;
Figure 3A is an explanatory view of force working on a diameter-expansion piece;
t Figure 3B is a vector diagram showing resultant force;
Figure 4 is an enlarged cross-sectional front view of a principal portion;
Figure 5 is an explanatory cross-sectional front view of a principal portion;
Figure 6 is an explanatory perspective view of a principal portion portion;
Figure 7 is a functional explanatory view of the first embodiment;
Figure 8 is a cross-sectional front view showing a second embodiment;
- 3a -Figure 9 is a functional explanatory view of the second embodiment;
Figure 10 is a cross-sectional front view showing a third embodiment;
Figure 11 is a cross-sectional view of P - P line in Figure 10;
Figure 12 is an explanatory view;
Figure 13 is a cross-sectional view of S - S line in Figure 12;
Figure 14 is an explanatory view;
Figure 15 is a cross-sectional view of T - T line in Figure 12;
Figure 16 is an explanatory view;
Figure 17 is an explanatory view;
Figure 18 is a functional explanatory view of the third embodiment;
Figure 19 is a cross-sectional view of 0 - 0 line in Figure 18;
Figure 20 is a functional explanatory view of the third embodiment;
and Figure 21 is a cross-sectional view of R - R line in Figure 20.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.
Figure 1 shows a first embodiment of the present invention. This pipe joint is provided with a joint main body 2 of metal having an insertion cylinder portion 3 to be inserted to an end portion la of a pipe 1 of synthetic resin to be connected and a clamp ring 5 having a slit 51 to fasten the end portion la of the pipe 1 put onto the insertion cylinder portion 3 by elastic fastening force. The clamp ring is composed of metal, for example, of spring steel. A hitching stop portion 15, having plural peripheral tapers to stop the pipe 1 against drawing out, is formed on a peripheral face 3a of the insertion cylinder portion 3.
A mark 6 represents a diameter-expansion piece (jumper pin) releasably held within the slit 51 as to expand the clamp ring 5 against the elastic force of the clamp ring 5. The diameter-expansion piece 6 is composed of metal, for example, of high-rigidity steel. A
mark 10A represents a restriction sleeve covering the clamp ring 5 to restrict jumping movement of the diameter-expansion piece 6 in an outward diameter direction, and to allow the jumping movement of the diameter-expansion piece 6 in the outward diameter direction in contact with a forth end portion lb of the inserted pipe 1 and slid in an axis inner direction E. The restriction sleeve 10A is composed of transparent synthetic resin. And the restriction sleeve 1OA is composed of a cylindrical wall portion 10a and a right-angle wall portion 10b at right angles with the axis direction.
That is to say, a pipe-insertion detector K, which detects the insertion of the pipe 1 to a predetermined depth and releases the restriction, is provided. The pipe-insertion detector K is composed of the right-angle wall portion 10b.
As shown in Figures 2, 3A, and 36, opening both end faces 21 forming the slit 51 of the clamp ring 5 are formed as to expand in outward diameter directions (as to make inclination faces) when observed in the axis direction, and force F from the end faces 21 makes the diameter-expansion piece 6 jump in the outward diameter direction.
Concretely, the opening end face 21 is inclined for an anglea of 20 <
c e< 60 when observed in the axis direction. When the angle a is within this range, the diameter-expansion piece 6 receives appropriate force F
from the end faces 21 of the clamp ring 5. And, if the angle a is out of this range, the diameter-expansion piece 6 can not receive the appropriate force F. The force F is a resultant force of force F, and force F 2 received by the diameter-expansion piece 6 from the opening end faces 21 forming the slit 51.
Figures 4, 5, and 6 show an example of a holding construction for the clamp ring which is omitted in Figure 1. The clamp ring 5 (refer to Figure 1) has a stopping rod 4 to contact the joint main body 2 and prevent movement in the axis direction. The stopping rod 4 has a peripheral concave groove 4a on an end portion. A mark 7 shows a fastening piece 7 composed of U-shaped wire. The joint main body 2 has holes 8 to which both ends 7a of the fastening piece 7 are tightly inserted. The both ends 7a of the fastening piece 7 are inserted to the holes 8 to attach to the joint main body 2 while the fastening piece 7 is fitted to the peripheral concave groove 4a as to regulate the movement of the clamp ring 5. That is to say, the clamp ring 5 is prevented from moving in the axis direction while being able to move in diameter direction (as to diminish in diameter).
As shown in Figure 1, the diameter-expansion piece 6 is held (disposed) on a position approximately central in the axis direction of the slit 51 of the clamp ring 5. That is to say, in this construction, the diameter-expansion piece 6 can be disposed on a position (approximately central on the axis) sufficiently distant from the inner end portion of the clamp ring 5 because the jumping out (jumping movement) of the diameter-expansion piece 6 is restricted through the cylindrical restriction sleeve 10A having the right-angle wall portion 10b formed as an inner brim.
Therefore, the clamp ring 5 expands with uniform diameter in the axis direction (without being tapered), the forth end portion lb of the pipe can be easily inserted, and it is unnecessary to excessively expand the clamp ring (as in conventional joints).
And, the length in the axis direction of the clamp ring 5 can be set to be sufficiently long, and the pipe l can be fastened in a stable position.
Figure 7 is a functional explanatory view of the first embodiment.
Figure 4 is an enlarged cross-sectional front view of a principal portion;
Figure 5 is an explanatory cross-sectional front view of a principal portion;
Figure 6 is an explanatory perspective view of a principal portion portion;
Figure 7 is a functional explanatory view of the first embodiment;
Figure 8 is a cross-sectional front view showing a second embodiment;
- 3a -Figure 9 is a functional explanatory view of the second embodiment;
Figure 10 is a cross-sectional front view showing a third embodiment;
Figure 11 is a cross-sectional view of P - P line in Figure 10;
Figure 12 is an explanatory view;
Figure 13 is a cross-sectional view of S - S line in Figure 12;
Figure 14 is an explanatory view;
Figure 15 is a cross-sectional view of T - T line in Figure 12;
Figure 16 is an explanatory view;
Figure 17 is an explanatory view;
Figure 18 is a functional explanatory view of the third embodiment;
Figure 19 is a cross-sectional view of 0 - 0 line in Figure 18;
Figure 20 is a functional explanatory view of the third embodiment;
and Figure 21 is a cross-sectional view of R - R line in Figure 20.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Preferred embodiments of the present invention will now be described with reference to the accompanying drawings.
Figure 1 shows a first embodiment of the present invention. This pipe joint is provided with a joint main body 2 of metal having an insertion cylinder portion 3 to be inserted to an end portion la of a pipe 1 of synthetic resin to be connected and a clamp ring 5 having a slit 51 to fasten the end portion la of the pipe 1 put onto the insertion cylinder portion 3 by elastic fastening force. The clamp ring is composed of metal, for example, of spring steel. A hitching stop portion 15, having plural peripheral tapers to stop the pipe 1 against drawing out, is formed on a peripheral face 3a of the insertion cylinder portion 3.
A mark 6 represents a diameter-expansion piece (jumper pin) releasably held within the slit 51 as to expand the clamp ring 5 against the elastic force of the clamp ring 5. The diameter-expansion piece 6 is composed of metal, for example, of high-rigidity steel. A
mark 10A represents a restriction sleeve covering the clamp ring 5 to restrict jumping movement of the diameter-expansion piece 6 in an outward diameter direction, and to allow the jumping movement of the diameter-expansion piece 6 in the outward diameter direction in contact with a forth end portion lb of the inserted pipe 1 and slid in an axis inner direction E. The restriction sleeve 10A is composed of transparent synthetic resin. And the restriction sleeve 1OA is composed of a cylindrical wall portion 10a and a right-angle wall portion 10b at right angles with the axis direction.
That is to say, a pipe-insertion detector K, which detects the insertion of the pipe 1 to a predetermined depth and releases the restriction, is provided. The pipe-insertion detector K is composed of the right-angle wall portion 10b.
As shown in Figures 2, 3A, and 36, opening both end faces 21 forming the slit 51 of the clamp ring 5 are formed as to expand in outward diameter directions (as to make inclination faces) when observed in the axis direction, and force F from the end faces 21 makes the diameter-expansion piece 6 jump in the outward diameter direction.
Concretely, the opening end face 21 is inclined for an anglea of 20 <
c e< 60 when observed in the axis direction. When the angle a is within this range, the diameter-expansion piece 6 receives appropriate force F
from the end faces 21 of the clamp ring 5. And, if the angle a is out of this range, the diameter-expansion piece 6 can not receive the appropriate force F. The force F is a resultant force of force F, and force F 2 received by the diameter-expansion piece 6 from the opening end faces 21 forming the slit 51.
Figures 4, 5, and 6 show an example of a holding construction for the clamp ring which is omitted in Figure 1. The clamp ring 5 (refer to Figure 1) has a stopping rod 4 to contact the joint main body 2 and prevent movement in the axis direction. The stopping rod 4 has a peripheral concave groove 4a on an end portion. A mark 7 shows a fastening piece 7 composed of U-shaped wire. The joint main body 2 has holes 8 to which both ends 7a of the fastening piece 7 are tightly inserted. The both ends 7a of the fastening piece 7 are inserted to the holes 8 to attach to the joint main body 2 while the fastening piece 7 is fitted to the peripheral concave groove 4a as to regulate the movement of the clamp ring 5. That is to say, the clamp ring 5 is prevented from moving in the axis direction while being able to move in diameter direction (as to diminish in diameter).
As shown in Figure 1, the diameter-expansion piece 6 is held (disposed) on a position approximately central in the axis direction of the slit 51 of the clamp ring 5. That is to say, in this construction, the diameter-expansion piece 6 can be disposed on a position (approximately central on the axis) sufficiently distant from the inner end portion of the clamp ring 5 because the jumping out (jumping movement) of the diameter-expansion piece 6 is restricted through the cylindrical restriction sleeve 10A having the right-angle wall portion 10b formed as an inner brim.
Therefore, the clamp ring 5 expands with uniform diameter in the axis direction (without being tapered), the forth end portion lb of the pipe can be easily inserted, and it is unnecessary to excessively expand the clamp ring (as in conventional joints).
And, the length in the axis direction of the clamp ring 5 can be set to be sufficiently long, and the pipe l can be fastened in a stable position.
Figure 7 is a functional explanatory view of the first embodiment.
When the pipe 1 to be connected in the state of Figure 1 is moved in an arrow A direction in Figure 1, the forth end portion la of the pipe 1 contacts and slides the right-angle wall portion 10b of the restriction sleeve 1OA in the axis inner direction E. When the restriction sleeve 10A parts from the diameter-expansion piece 6, the diameter-expansion piece 6, restricted not to jump outward in the diameter direction, jumps in an outward direction (an arrow Z direction in Figure 7).
Figure 8 shows a second embodiment. This pipe joint has a transparent cover 9 of synthetic resin. The transparent cover 9 includes the restriction sleeve 1OA and forms an escape space 16 to contain the diameter-expansion piece 6 released from the slit 51. The joint main body 2 has a male screw portion 11. The clamp ring 5 has a peripheral concave groove 12 on the peripheral face 5a. The transparent cover has a female screw portion 13 on an end 9a to screw onto the male screw portion 11, and a hitching ring portion 14 on another end 9b to fit to the peripheral concave groove 12 of the clamp ring 5. With this construction, the clamp ring 5, the diameter-expansion piece 6, and the restriction sleeve 10A can be easily handled unitedly with the joint main body 2, and the clamp ring 5 is prevented from moving in the axis direction when the pipe 1 is connected. Other parts of the second embodiment are composed similarly to that of the first embodiment.
Figure 9 is a functional explanatory view of the second embodiment.
When the pipe 1 to be connected in the state of Figure 8 is moved in an arrow B direction in Figure 8, the forth end portion lb of the pipe 1 contacts and slides the right-angle wall portion l0b of the restriction sleeve 1OA in the axis inner direction. When the restriction sleeve 10A
parts from the diameter-expansion piece 6, the diameter-expansion piece 6 jumps in an outward direction (an arrow Y direction in Figure 9). The diameter-expansion piece 6 is prevented from jumping toward the face of the worker for safety because the diameter-expansion piece 6 after the jump remains within the transparent cover 9.
Figures 10 and 11 show a third embodiment. The joint main body 2 is not shown in Figure 11 (the joint main body 2 is also omitted similarly in later-described Figures 19 and 21). A mark 10B shows a hand-rotatable restriction sleeve mounted to the clamp ring 5 as to restrict the outward jumping movement of the diameter-expansion piece 6 and having an escape concave portion 18 on a part of an inner peripheral face 17 to allow the jumping movement. The restriction sleeve 10B is composed of transparent synthetic resin.
As shown in Figures 12 and 13, the clamp ring 5 has a male fitting portion (hitching convex portion) 19 on a part of an inner end face in the axis direction. This male fitting portion (hitching convex portion) 19 is preferably disposed on a position in peripheral direction opposite to the slit 51 for approximately 180 .
Figures 14 and 15 show a transparent rotation-stopping ring 20 of synthetic resin disposed inner to the clamp ring 5 in the axis direction within the restriction sleeve 10B (as shown in Figure 10), and mounted to the peripheral face 1c of the forth end portion lb of the inserted pipe 1 with predetermined resistance in rotation direction, in other words, as the predetermined resistance in rotation direction works when force in rotation direction is loaded on the pipe 1 to be connected. That is to say, the rotation-stopping ring 20 has plural protruding ridges 23 on the inner peripheral face 22 parallel to the axis direction. The cross-sectional configuration of the protruding ridge 23 is formed approximately triangular. The rotation-stopping ring 20 has a female fitting portion (hitched concave portion) 24 to which the male fitting portion (hitching convex portion) 19 of the clamp ring (refer to Figures 12 and 13) hitches.
As shown in Figures 10 and 16, the clamp ring 5 and the rotation-stopping ring 20 are fit as not to relatively rotate. That is to say, as shown with an arrow G in Figure 17, the male fitting portion 19 of the clamp ring 5 and the female fitting portion 24 of the rotation-stopping ring 20 are assembled to be mutually fit.
As described above, the pipe-insertion detector K, detecting the insertion of the pipe 1 to the predetermined depth and making the restriction releasable, is provided. Concretely, the pipe-insertion detector K allows the united rotation of the clamp ring 5 and the restriction sleeve 10B in uninserted state of the pipe (refer to Figures and 11), namely, the clamp ring 5 and the restriction sleeve 10B
rotate together, and stops the clamp ring 5 and allows only manual rotation of the restriction sleeve 10B, namely, slide in the rotation direction W (refer to Figure 19), when the pipe 1 is inserted (refer to Figures 18 through 21). The pipe-insertion detector K is composed of the rotation-stopping ring 20 and the male and female fitting portions 19 and 24. In the present invention, "releasable" is defined as that the releasability is high as one movement (manual rotation of the restriction sleeve 10B in the third embodiment) can release the restriction.
Other parts of the third embodiment are composed similarly to that of the first embodiment.
Next, function of the pipe joint is described.
In the uninserted state of the pipe shown in Figures 10 and 11, the jumping movement of the diameter-expansion piece 6 is restricted because the clamp ring 5 and the restriction sleeve 10B rotate together.
When the pipe 1 to be connected is moved in an arrow C direction in Figure 10, the protruding ridges 23 of the rotation-stopping ring 20 bite into the peripheral face lc of the forth end portion lb of the pipe 1 as shown in FIgures 18 and 19. In this state (in which the pipe 1 is inserted into the rotation-stopping ring 20), rotation of the rotation-stopping ring 20 is restricted to the pipe 1 (by resistance in the rotation direction of the protruding ridges 23 biting into the peripheral face 1c of the pipe 1) even if a force in the rotation direction (from the restriction sleeve 10B) works on the rotation-stopping ring 20.
Then, only the restriction sleeve 10B is rotated (slid) in the rotation direction W in Figure 19, the diameter-expansion piece 6, restricted as not to jump in outward direction, starts the jumping movement in the outward direction (an arrow N direction in Figures 20 and 21) because the diameter-expansion piece 6 receives the force F (in Figure 11) from the end faces 21 as described above.
In the present invention, which can be modified in design, a concavo-convex (roulette-shaped, for example) or tapered hitching stop portion may be formed on the inner peripheral face of the clamp ring 5 to be hitched onto the peripheral face of the pipe 1. And, the configurations of the clamp ring 5, the diameter-expansion piece 6, the restriction sleeves 10A and 10B may be changed within the scope of the present invention.
And, in the third embodiment, the clamp ring 5 may have the female fitting portion (hitched concave portion) 24 and the rotation-stopping ring 20 may have the male fitting portion (hitching convex portion) 19 to hitch the clamp ring 5 to the rotation-stopping ring 20 as not to relatively rotate.
As described above, in the present invention, the pipe 1 can be easily connected because the pipe joint is provided with the joint main body 2 having the insertion cylinder portion 3 inserted to the end portion of the pipe 1 to be connected, the clamp ring 5 with the slit 51 to fasten the end portion of the pipe 1 mounted to the insertion cylinder portion 3 by elastic fastening force, the diameter-expansion piece 6, held within the slit 51 releasably when jumping outward, to expand the clamp ring 5 against elastic force of the clamp ring 5, the restriction sleeve 10A, or 10B covering the clamp ring 5 as to restrict outward jumping movement of the diameter-expansion piece 6, and the pipe-insertion detector K to detect the insertion of the pipe 1 to a predetermined depth and release or make releasable the restriction. And, a stop ring, having plural dent portions on the inner peripheral side, can be omitted because stopping is certainly made by the clamp ring 5 (and the hitching stop portion 15), and damage on the pipe 1 is prevented thereby.
The pipe 1 can be easily connected because the pipe joint is provided with the joint main body 2 having the insertion cylinder portion 3 inserted to the end portion of the pipe 1 to be connected, the clamp ring 5 with the slit 51 to fasten the end portion of the pipe 1 mounted to the insertion cylinder portion 3 by elastic fastening force, the diameter-expansion piece 6, held within the slit 51 releasably when jumping outward, to expand the clamp ring 5 against elastic force of the clamp ring 5, the restriction sleeve, and the restriction sleeve 10A, covering the clamp ring 5 as to restrict outward jumping movement of the diameter-expansion piece 6, contacts the forth end portion 10b of the inserted pipe 1 to slide in the axis inner direction to allow the outward jumping movement of the diameter-expansion piece 6. And, the insertion depth of the pipe 1 can be regulated by changing the length of the restriction sleeve 10A in the axis direction or choosing one restriction sleeve 10A among a series of restriction sleeves. And, the connection of the pipe 1 is certainly confirmed to check misworking in the insertion of the pipe 1 because the diameter-expansion piece 6 does not jump unless the pipe 1 is sufficiently inserted. Further, a stop ring, having plural dent portions on the inner peripheral side, can be omitted because stopping is certainly made by the clamp ring 5 (and the hitching stop portion 15), and damage on the pipe 1 is prevented thereby.
The diameter-expansion piece 6 can be held by (attached to) the clamp ring 5 as a wedge is inserted because the opening both end faces 21 forming the slit 51 of the clamp ring 5 are formed as to expand outward when observed in the axis direction, and the diameter-expansion piece 6 is made jump outward by the force F from the end faces 21.
Especially, the attachment can be conducted with small force by setting of the angle a.
The clamp ring 5 can be uniformly expanded in the axis direction (as not to be tapered) to facilitate the insertion and stable fastening of the pipe 1 because the diameter-expansion piece 6 is held on an approximately central position of the slit 51 of the clamp ring 5 in the axis direction. Further, the length dimension of the clamp ring 5 in the axis direction can be set sufficiently large.
And, the pipe 1 can be easily connected because the pipe joint is provided with the joint main body 2 having the insertion cylinder portion 3 inserted to the end portion of the pipe 1 to be connected, the clamp ring 5 with the slit 51 to fasten the end portion of the pipe 1 mounted to the insertion cylinder portion 3 by elastic fastening force, the diameter-expansion piece 6, held within the slit 51 releasably when jumping outward, to expand the clamp ring 5 against elastic force of the clamp ring 5, and the manually-rotatable restriction sleeve 10B
covering the clamp ring 5 as to restrict outward jumping movement of the diameter-expansion piece 6 and having the escape concave portion 18 on a part of the inner peripheral face 17 to allow the jumping movement.
And, a stop ring, having plural dent portions on the inner peripheral side, can be omitted because stopping is certainly made by the clamp ring 5 (and the hitching stop portion 15), and damage on the pipe 1 is prevented thereby. Further, length dimension of the whole pipe joint can be set small.
The pipe 1 can be easily connected because the pipe joint is provided with the joint main body 2 having the insertion cylinder portion 3 inserted to the end portion of the pipe 1 to be connected, the clamp ring 5 with the slit 51 to fasten the end portion of the pipe 1 mounted to the insertion cylinder portion 3 by elastic fastening force, the diameter-expansion piece 6, held within the slit 51 releasably when jumping outward, to expand the clamp ring 5 against elastic force of the clamp ring 5, and the manually-rotatable restriction sleeve 10B
covering the clamp ring 5 as to restrict outward jumping movement of the diameter-expansion piece 6 and having the escape concave portion 18 on a part of the inner peripheral face 17 to allow the jumping movement, and the pipe-insertion detector K to allow united rotation of the clamp ring 5 and the restriction sleeve 10B in uninserted state of the pipe, and stop the rotation of the clamp ring 5 and allow only manual rotation of the restriction sleeve 10B when the pipe 1 is inserted. And, the connection of the pipe 1 is certainly confirmed to check misworking in the insertion of the pipe 1 because the restriction sleeve 10B can not be manually rotated (the diameter-expansion piece 6 does not jump) unless the pipe 1 is sufficiently inserted. And, a stop ring, having plural dent portions on the inner peripheral side, can be omitted because stopping is certainly made by the clamp ring 5 (and the hitching stop portion 15), and damage on the pipe 1 is prevented thereby. Further, length dimension of the whole pipe joint can be set small .
The whole pipe joint is made simple because the pipe-insertion detector K is composed of the rotation-stopping ring 20, disposed inner to the clamp ring 5 in the axis direction within the restriction sleeve 10B and mounted on the peripheral face 1c of the forth end portion lb of the inserted pipe 1 with predetermined resistance in the rotation direction, and the male and female fitting portions 19 and 24 to fit the clamp ring 5 to the rotation-stopping ring 20 as not to relatively rotate. And, when the restriction sleeve 10B and the rotation-stopping ring 20 are made of transparent synthetic resin, the insertion position of the pipe 1 can be seen from outside to easily confirm the insertion position.
The diameter-expansion piece 6 can be held by (attached to) the clamp ring 5 as a wedge is inserted because the opening both end faces 21 forming the slit 51 of the clamp ring 5 are formed as to expand outward when observed in the axis direction, and the diameter-expansion piece 6 is made jump outward by the force F from the end faces 21.
Especially, the attachment can be conducted with small force by setting of the angle .
And, the clamp ring 5 can be uniformly expanded in the axis direction (as not to be tapered) to facilitate the insertion and stable fastening of the pipe 1 because the diameter-expansion piece 6 is held on an approximately central position of the slit 51 of the clamp ring 5 in the axis direction.
Although the present invention has been fully described by way of examples with reference to the accompanying drawings, it is to be noted here that various changes and modifications otherwise depart from the scope of the present invention, they should be construed as being included therein.
Figure 8 shows a second embodiment. This pipe joint has a transparent cover 9 of synthetic resin. The transparent cover 9 includes the restriction sleeve 1OA and forms an escape space 16 to contain the diameter-expansion piece 6 released from the slit 51. The joint main body 2 has a male screw portion 11. The clamp ring 5 has a peripheral concave groove 12 on the peripheral face 5a. The transparent cover has a female screw portion 13 on an end 9a to screw onto the male screw portion 11, and a hitching ring portion 14 on another end 9b to fit to the peripheral concave groove 12 of the clamp ring 5. With this construction, the clamp ring 5, the diameter-expansion piece 6, and the restriction sleeve 10A can be easily handled unitedly with the joint main body 2, and the clamp ring 5 is prevented from moving in the axis direction when the pipe 1 is connected. Other parts of the second embodiment are composed similarly to that of the first embodiment.
Figure 9 is a functional explanatory view of the second embodiment.
When the pipe 1 to be connected in the state of Figure 8 is moved in an arrow B direction in Figure 8, the forth end portion lb of the pipe 1 contacts and slides the right-angle wall portion l0b of the restriction sleeve 1OA in the axis inner direction. When the restriction sleeve 10A
parts from the diameter-expansion piece 6, the diameter-expansion piece 6 jumps in an outward direction (an arrow Y direction in Figure 9). The diameter-expansion piece 6 is prevented from jumping toward the face of the worker for safety because the diameter-expansion piece 6 after the jump remains within the transparent cover 9.
Figures 10 and 11 show a third embodiment. The joint main body 2 is not shown in Figure 11 (the joint main body 2 is also omitted similarly in later-described Figures 19 and 21). A mark 10B shows a hand-rotatable restriction sleeve mounted to the clamp ring 5 as to restrict the outward jumping movement of the diameter-expansion piece 6 and having an escape concave portion 18 on a part of an inner peripheral face 17 to allow the jumping movement. The restriction sleeve 10B is composed of transparent synthetic resin.
As shown in Figures 12 and 13, the clamp ring 5 has a male fitting portion (hitching convex portion) 19 on a part of an inner end face in the axis direction. This male fitting portion (hitching convex portion) 19 is preferably disposed on a position in peripheral direction opposite to the slit 51 for approximately 180 .
Figures 14 and 15 show a transparent rotation-stopping ring 20 of synthetic resin disposed inner to the clamp ring 5 in the axis direction within the restriction sleeve 10B (as shown in Figure 10), and mounted to the peripheral face 1c of the forth end portion lb of the inserted pipe 1 with predetermined resistance in rotation direction, in other words, as the predetermined resistance in rotation direction works when force in rotation direction is loaded on the pipe 1 to be connected. That is to say, the rotation-stopping ring 20 has plural protruding ridges 23 on the inner peripheral face 22 parallel to the axis direction. The cross-sectional configuration of the protruding ridge 23 is formed approximately triangular. The rotation-stopping ring 20 has a female fitting portion (hitched concave portion) 24 to which the male fitting portion (hitching convex portion) 19 of the clamp ring (refer to Figures 12 and 13) hitches.
As shown in Figures 10 and 16, the clamp ring 5 and the rotation-stopping ring 20 are fit as not to relatively rotate. That is to say, as shown with an arrow G in Figure 17, the male fitting portion 19 of the clamp ring 5 and the female fitting portion 24 of the rotation-stopping ring 20 are assembled to be mutually fit.
As described above, the pipe-insertion detector K, detecting the insertion of the pipe 1 to the predetermined depth and making the restriction releasable, is provided. Concretely, the pipe-insertion detector K allows the united rotation of the clamp ring 5 and the restriction sleeve 10B in uninserted state of the pipe (refer to Figures and 11), namely, the clamp ring 5 and the restriction sleeve 10B
rotate together, and stops the clamp ring 5 and allows only manual rotation of the restriction sleeve 10B, namely, slide in the rotation direction W (refer to Figure 19), when the pipe 1 is inserted (refer to Figures 18 through 21). The pipe-insertion detector K is composed of the rotation-stopping ring 20 and the male and female fitting portions 19 and 24. In the present invention, "releasable" is defined as that the releasability is high as one movement (manual rotation of the restriction sleeve 10B in the third embodiment) can release the restriction.
Other parts of the third embodiment are composed similarly to that of the first embodiment.
Next, function of the pipe joint is described.
In the uninserted state of the pipe shown in Figures 10 and 11, the jumping movement of the diameter-expansion piece 6 is restricted because the clamp ring 5 and the restriction sleeve 10B rotate together.
When the pipe 1 to be connected is moved in an arrow C direction in Figure 10, the protruding ridges 23 of the rotation-stopping ring 20 bite into the peripheral face lc of the forth end portion lb of the pipe 1 as shown in FIgures 18 and 19. In this state (in which the pipe 1 is inserted into the rotation-stopping ring 20), rotation of the rotation-stopping ring 20 is restricted to the pipe 1 (by resistance in the rotation direction of the protruding ridges 23 biting into the peripheral face 1c of the pipe 1) even if a force in the rotation direction (from the restriction sleeve 10B) works on the rotation-stopping ring 20.
Then, only the restriction sleeve 10B is rotated (slid) in the rotation direction W in Figure 19, the diameter-expansion piece 6, restricted as not to jump in outward direction, starts the jumping movement in the outward direction (an arrow N direction in Figures 20 and 21) because the diameter-expansion piece 6 receives the force F (in Figure 11) from the end faces 21 as described above.
In the present invention, which can be modified in design, a concavo-convex (roulette-shaped, for example) or tapered hitching stop portion may be formed on the inner peripheral face of the clamp ring 5 to be hitched onto the peripheral face of the pipe 1. And, the configurations of the clamp ring 5, the diameter-expansion piece 6, the restriction sleeves 10A and 10B may be changed within the scope of the present invention.
And, in the third embodiment, the clamp ring 5 may have the female fitting portion (hitched concave portion) 24 and the rotation-stopping ring 20 may have the male fitting portion (hitching convex portion) 19 to hitch the clamp ring 5 to the rotation-stopping ring 20 as not to relatively rotate.
As described above, in the present invention, the pipe 1 can be easily connected because the pipe joint is provided with the joint main body 2 having the insertion cylinder portion 3 inserted to the end portion of the pipe 1 to be connected, the clamp ring 5 with the slit 51 to fasten the end portion of the pipe 1 mounted to the insertion cylinder portion 3 by elastic fastening force, the diameter-expansion piece 6, held within the slit 51 releasably when jumping outward, to expand the clamp ring 5 against elastic force of the clamp ring 5, the restriction sleeve 10A, or 10B covering the clamp ring 5 as to restrict outward jumping movement of the diameter-expansion piece 6, and the pipe-insertion detector K to detect the insertion of the pipe 1 to a predetermined depth and release or make releasable the restriction. And, a stop ring, having plural dent portions on the inner peripheral side, can be omitted because stopping is certainly made by the clamp ring 5 (and the hitching stop portion 15), and damage on the pipe 1 is prevented thereby.
The pipe 1 can be easily connected because the pipe joint is provided with the joint main body 2 having the insertion cylinder portion 3 inserted to the end portion of the pipe 1 to be connected, the clamp ring 5 with the slit 51 to fasten the end portion of the pipe 1 mounted to the insertion cylinder portion 3 by elastic fastening force, the diameter-expansion piece 6, held within the slit 51 releasably when jumping outward, to expand the clamp ring 5 against elastic force of the clamp ring 5, the restriction sleeve, and the restriction sleeve 10A, covering the clamp ring 5 as to restrict outward jumping movement of the diameter-expansion piece 6, contacts the forth end portion 10b of the inserted pipe 1 to slide in the axis inner direction to allow the outward jumping movement of the diameter-expansion piece 6. And, the insertion depth of the pipe 1 can be regulated by changing the length of the restriction sleeve 10A in the axis direction or choosing one restriction sleeve 10A among a series of restriction sleeves. And, the connection of the pipe 1 is certainly confirmed to check misworking in the insertion of the pipe 1 because the diameter-expansion piece 6 does not jump unless the pipe 1 is sufficiently inserted. Further, a stop ring, having plural dent portions on the inner peripheral side, can be omitted because stopping is certainly made by the clamp ring 5 (and the hitching stop portion 15), and damage on the pipe 1 is prevented thereby.
The diameter-expansion piece 6 can be held by (attached to) the clamp ring 5 as a wedge is inserted because the opening both end faces 21 forming the slit 51 of the clamp ring 5 are formed as to expand outward when observed in the axis direction, and the diameter-expansion piece 6 is made jump outward by the force F from the end faces 21.
Especially, the attachment can be conducted with small force by setting of the angle a.
The clamp ring 5 can be uniformly expanded in the axis direction (as not to be tapered) to facilitate the insertion and stable fastening of the pipe 1 because the diameter-expansion piece 6 is held on an approximately central position of the slit 51 of the clamp ring 5 in the axis direction. Further, the length dimension of the clamp ring 5 in the axis direction can be set sufficiently large.
And, the pipe 1 can be easily connected because the pipe joint is provided with the joint main body 2 having the insertion cylinder portion 3 inserted to the end portion of the pipe 1 to be connected, the clamp ring 5 with the slit 51 to fasten the end portion of the pipe 1 mounted to the insertion cylinder portion 3 by elastic fastening force, the diameter-expansion piece 6, held within the slit 51 releasably when jumping outward, to expand the clamp ring 5 against elastic force of the clamp ring 5, and the manually-rotatable restriction sleeve 10B
covering the clamp ring 5 as to restrict outward jumping movement of the diameter-expansion piece 6 and having the escape concave portion 18 on a part of the inner peripheral face 17 to allow the jumping movement.
And, a stop ring, having plural dent portions on the inner peripheral side, can be omitted because stopping is certainly made by the clamp ring 5 (and the hitching stop portion 15), and damage on the pipe 1 is prevented thereby. Further, length dimension of the whole pipe joint can be set small.
The pipe 1 can be easily connected because the pipe joint is provided with the joint main body 2 having the insertion cylinder portion 3 inserted to the end portion of the pipe 1 to be connected, the clamp ring 5 with the slit 51 to fasten the end portion of the pipe 1 mounted to the insertion cylinder portion 3 by elastic fastening force, the diameter-expansion piece 6, held within the slit 51 releasably when jumping outward, to expand the clamp ring 5 against elastic force of the clamp ring 5, and the manually-rotatable restriction sleeve 10B
covering the clamp ring 5 as to restrict outward jumping movement of the diameter-expansion piece 6 and having the escape concave portion 18 on a part of the inner peripheral face 17 to allow the jumping movement, and the pipe-insertion detector K to allow united rotation of the clamp ring 5 and the restriction sleeve 10B in uninserted state of the pipe, and stop the rotation of the clamp ring 5 and allow only manual rotation of the restriction sleeve 10B when the pipe 1 is inserted. And, the connection of the pipe 1 is certainly confirmed to check misworking in the insertion of the pipe 1 because the restriction sleeve 10B can not be manually rotated (the diameter-expansion piece 6 does not jump) unless the pipe 1 is sufficiently inserted. And, a stop ring, having plural dent portions on the inner peripheral side, can be omitted because stopping is certainly made by the clamp ring 5 (and the hitching stop portion 15), and damage on the pipe 1 is prevented thereby. Further, length dimension of the whole pipe joint can be set small .
The whole pipe joint is made simple because the pipe-insertion detector K is composed of the rotation-stopping ring 20, disposed inner to the clamp ring 5 in the axis direction within the restriction sleeve 10B and mounted on the peripheral face 1c of the forth end portion lb of the inserted pipe 1 with predetermined resistance in the rotation direction, and the male and female fitting portions 19 and 24 to fit the clamp ring 5 to the rotation-stopping ring 20 as not to relatively rotate. And, when the restriction sleeve 10B and the rotation-stopping ring 20 are made of transparent synthetic resin, the insertion position of the pipe 1 can be seen from outside to easily confirm the insertion position.
The diameter-expansion piece 6 can be held by (attached to) the clamp ring 5 as a wedge is inserted because the opening both end faces 21 forming the slit 51 of the clamp ring 5 are formed as to expand outward when observed in the axis direction, and the diameter-expansion piece 6 is made jump outward by the force F from the end faces 21.
Especially, the attachment can be conducted with small force by setting of the angle .
And, the clamp ring 5 can be uniformly expanded in the axis direction (as not to be tapered) to facilitate the insertion and stable fastening of the pipe 1 because the diameter-expansion piece 6 is held on an approximately central position of the slit 51 of the clamp ring 5 in the axis direction.
Although the present invention has been fully described by way of examples with reference to the accompanying drawings, it is to be noted here that various changes and modifications otherwise depart from the scope of the present invention, they should be construed as being included therein.
Claims (2)
1. A pipe joint comprising:
a joint main body having a cylindrical insertion portion configured for insertion into an end portion of a pipe;
a clamp ring receiving the cylindrical insertion portion therethrough and having a slit that defines facing ends of the clamp ring;
a diameter-expansion piece releasably held between the facing ends of the clamp ring thereby to expand the clamp ring against its clamping force; and a restriction sleeve associated with the joint main body and configured to block outward release of the diameter-expansion piece from between the facing ends of the clamp ring, the restriction sleeve further configured to slide along the joint main body when pushed by the pipe during insertion to a position at which outward release of the diameter-expansion piece is unblocked;
wherein when unblocked the diameter-expansion piece is caused by the clamping force of the clamp ring to jump radially outward from between the facing ends permitting the clamp ring to contract to clamp against the pipe.
a joint main body having a cylindrical insertion portion configured for insertion into an end portion of a pipe;
a clamp ring receiving the cylindrical insertion portion therethrough and having a slit that defines facing ends of the clamp ring;
a diameter-expansion piece releasably held between the facing ends of the clamp ring thereby to expand the clamp ring against its clamping force; and a restriction sleeve associated with the joint main body and configured to block outward release of the diameter-expansion piece from between the facing ends of the clamp ring, the restriction sleeve further configured to slide along the joint main body when pushed by the pipe during insertion to a position at which outward release of the diameter-expansion piece is unblocked;
wherein when unblocked the diameter-expansion piece is caused by the clamping force of the clamp ring to jump radially outward from between the facing ends permitting the clamp ring to contract to clamp against the pipe.
2. The pipe joint as set forth in claim 1, wherein the diameter-expansion piece is held on an approximately central position of the slit of the clamp ring in the axis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002663163A CA2663163A1 (en) | 2004-11-29 | 2005-11-24 | Pipe joint |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004344599A JP3754059B1 (en) | 2004-11-29 | 2004-11-29 | Pipe fitting |
| JP2004-344599 | 2004-11-29 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002663163A Division CA2663163A1 (en) | 2004-11-29 | 2005-11-24 | Pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2527638A1 CA2527638A1 (en) | 2006-05-29 |
| CA2527638C true CA2527638C (en) | 2012-01-03 |
Family
ID=35999485
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002663163A Abandoned CA2663163A1 (en) | 2004-11-29 | 2005-11-24 | Pipe joint |
| CA2527638A Expired - Fee Related CA2527638C (en) | 2004-11-29 | 2005-11-24 | Pipe joint |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002663163A Abandoned CA2663163A1 (en) | 2004-11-29 | 2005-11-24 | Pipe joint |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US7455324B2 (en) |
| EP (1) | EP1662190B1 (en) |
| JP (1) | JP3754059B1 (en) |
| KR (1) | KR100753653B1 (en) |
| CN (1) | CN100529503C (en) |
| CA (2) | CA2663163A1 (en) |
| ES (1) | ES2522576T3 (en) |
| SG (1) | SG122907A1 (en) |
| TW (1) | TWI294952B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4719176B2 (en) * | 2007-03-28 | 2011-07-06 | 積水化学工業株式会社 | Pipe fitting |
| KR100819372B1 (en) | 2007-05-03 | 2008-04-04 | 문영달 | Tube coupling |
| DE102007025931B3 (en) * | 2007-06-02 | 2009-01-15 | Uponor Innovation Ab | Clamp fitting for a pipe |
| US20090026758A1 (en) * | 2007-07-24 | 2009-01-29 | Sanzone Brian D | Tube fitting with indication of fit |
| JP5150190B2 (en) * | 2007-10-04 | 2013-02-20 | Ｊｆｅ継手株式会社 | Pipe fitting |
| KR100922520B1 (en) * | 2008-08-26 | 2009-10-20 | 민운기 | Pipe coupling device |
| AT507565B1 (en) * | 2009-04-28 | 2010-06-15 | Ke Kelit Kunststoffwerk Gmbh | CONNECTION DEVICE FOR A PLASTIC TUBE ON A CONNECTION NIPPLE |
| US20100314869A1 (en) * | 2009-06-11 | 2010-12-16 | Wen-Pin Kuo | Pipe connector |
| SI2341273T1 (en) * | 2010-01-05 | 2012-09-28 | Geberit Int Ag | Tube clamp |
| WO2012020372A1 (en) * | 2010-08-10 | 2012-02-16 | Netafim Ltd | Fitting assembly |
| JP4906973B1 (en) * | 2011-03-22 | 2012-03-28 | 井上スダレ株式会社 | Pipe fitting |
| JP5611247B2 (en) * | 2012-01-10 | 2014-10-22 | 井上スダレ株式会社 | Pipe fitting |
| EA201491949A1 (en) * | 2012-04-24 | 2015-01-30 | Коэс Кампани Срл | COMPOSITE SLIDING GASKET FOR HIGH-PRESSURE COMPOUNDS |
| EP2669563A1 (en) | 2012-06-01 | 2013-12-04 | Uponor Innovation AB | Pipe connector |
| ES2548185T3 (en) * | 2012-11-28 | 2015-10-14 | TI Automotive (Fuldabrück) GmbH | Car unit and procedure for the manufacture of a car unit |
| CN112357144B (en) * | 2020-10-27 | 2022-03-01 | 四川极智朗润科技有限公司 | High-speed filling sealing device for soft liquid bag hose |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4226445A (en) * | 1978-10-20 | 1980-10-07 | Armaturenfabrik Hermann Voss Gmbh & Co. | Hose and pipe coupling |
| US4278279A (en) * | 1979-06-07 | 1981-07-14 | Zimmerman Harry M | Cam-lock fitting |
| US4635966A (en) * | 1985-09-20 | 1987-01-13 | Chrysler Motors Corporation | Hose connector |
| DE3931126A1 (en) * | 1989-09-18 | 1991-03-28 | Yokohama Aeroquip | PIPE COUPLING |
| DE3936102C1 (en) * | 1989-10-30 | 1991-01-17 | Karl Dipl.-Ing. 4040 Neuss De Weinhold | |
| JP2779866B2 (en) * | 1990-03-23 | 1998-07-23 | ニッタ・ムアー株式会社 | Pipe fittings |
| JP2560248Y2 (en) * | 1992-11-26 | 1998-01-21 | 日東工器株式会社 | Pipe fittings |
| DE19707371A1 (en) * | 1997-02-25 | 1998-08-27 | Voss Armaturen | Pressure fluid plug-in coupling |
| JP3405966B2 (en) * | 2000-02-07 | 2003-05-12 | 東尾メック株式会社 | Pipe fitting |
| JP3411546B2 (en) | 2000-07-11 | 2003-06-03 | 東尾メック株式会社 | Pipe fitting |
-
2004
- 2004-11-29 JP JP2004344599A patent/JP3754059B1/en not_active Expired - Fee Related
-
2005
- 2005-10-26 TW TW094137413A patent/TWI294952B/en not_active IP Right Cessation
- 2005-11-04 KR KR1020050105329A patent/KR100753653B1/en not_active IP Right Cessation
- 2005-11-07 SG SG200507153A patent/SG122907A1/en unknown
- 2005-11-18 US US11/281,379 patent/US7455324B2/en not_active Expired - Fee Related
- 2005-11-18 ES ES05025251.9T patent/ES2522576T3/en active Active
- 2005-11-18 EP EP05025251.9A patent/EP1662190B1/en not_active Expired - Fee Related
- 2005-11-24 CA CA002663163A patent/CA2663163A1/en not_active Abandoned
- 2005-11-24 CA CA2527638A patent/CA2527638C/en not_active Expired - Fee Related
- 2005-11-29 CN CNB2005101216837A patent/CN100529503C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2663163A1 (en) | 2006-05-29 |
| TWI294952B (en) | 2008-03-21 |
| EP1662190A3 (en) | 2010-02-17 |
| TW200622132A (en) | 2006-07-01 |
| KR20060059806A (en) | 2006-06-02 |
| SG122907A1 (en) | 2006-06-29 |
| US7455324B2 (en) | 2008-11-25 |
| EP1662190B1 (en) | 2014-08-13 |
| EP1662190A2 (en) | 2006-05-31 |
| CN100529503C (en) | 2009-08-19 |
| JP2006153142A (en) | 2006-06-15 |
| ES2522576T3 (en) | 2014-11-17 |
| KR100753653B1 (en) | 2007-08-30 |
| CN1818450A (en) | 2006-08-16 |
| JP3754059B1 (en) | 2006-03-08 |
| US20060113790A1 (en) | 2006-06-01 |
| CA2527638A1 (en) | 2006-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2527638C (en) | Pipe joint | |
| US7300076B2 (en) | Pipe joint | |
| US4906031A (en) | Quick connect coupling with garter spring | |
| NZ202580A (en) | Quick release hose coupling | |
| KR100665953B1 (en) | Pipe joint | |
| JP4679240B2 (en) | Pipe fitting | |
| JP2009103169A (en) | Joint | |
| US5141263A (en) | Fluid line connector fitting with longitudinal release mechanism | |
| US20080290653A1 (en) | Pipe Coupling | |
| US6959942B2 (en) | Ball hitch for an implement drawbar of an agricultural vehicle | |
| JP5581079B2 (en) | Pipe fitting | |
| GB2166508A (en) | Pipe joints | |
| PL206811B1 (en) | Pipe fittings | |
| TWI512224B (en) | Pipe fitting | |
| JP2008232330A (en) | Fluid pipe joint | |
| CA2541358C (en) | Rapid coupling | |
| JP4166775B2 (en) | Pipe fitting | |
| US20050067837A1 (en) | Quick disconnect hose coupling | |
| US20020024217A1 (en) | Thermally responsive coupling for fluid-carrying lines | |
| JP2002295769A (en) | Quick disconnect coupling and socket for quick disconnect coupling | |
| JP5421155B2 (en) | Fluid fitting device | |
| JPH07269761A (en) | Pipe coupling | |
| JP4090673B2 (en) | Pipe fitting | |
| JP2011007267A (en) | Pipe joint with hose retaining mechanism | |
| AU733683B2 (en) | Thermally responsive coupling for fluid-carrying lines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20151124 |