WO1985004443A1

WO1985004443A1 - Simplified lock for double-leaf door

Info

Publication number: WO1985004443A1
Application number: PCT/JP1985/000146
Authority: WO
Inventors: Hideo Hatao
Original assignee: Kabushiki Kaisha Hatao
Priority date: 1984-03-27
Filing date: 1985-03-25
Publication date: 1985-10-10

Abstract

Double-leaf door, which is set slidably in an opening of a building, and which consists of front and rear door members having door frames which overlap each other when the opening is closed with the door. The present invention consists of a locking member (14) set in the front door frame and movable in the longitudinal direction thereof and pivotable about the longitudinal axis thereof, and a lock hole member (15) set in the rear door frame and engageable with a disengageable from the locking member (14). The locking member (14) is pushed so as to be moved in the axially backward direction and turned at 90o about the axis thereof. Consequently, the locking member (14) and lock hole member (15) are engaged with each other, and the front and rear door frames are moved toward each other in the longitudinal direction as well as in the opening-closing direction.

Description

Descriptions Easy-to-lock technology for doors

INDUSTRIAL APPLICABILITY The present invention is attached to a sliding door in a building opening, can lock the sliding door, and can close the building opening hermetically by the sliding door, which is convenient and easy to handle and is excellent in crime prevention. Regarding locks.

Background technology

Generally, a pair of front and rear sliding doors are used that are slidably attached to a building opening and have a fitting frame that partially overlaps with the opening when the opening is closed. Conventionally, such sliding doors are locked by screwing a male screw body inserted and held in the front fitting frame to a female screw body fixed to the rear fitting frame, and in FIG. As shown in Fig. 3, the male body 2 rotatably supported on the side end surface Γ of the front fitting frame 1 is inserted into the U-shaped female body 4 fixed to the end surface 3'of the rear fitting frame 3 and locked. There are 5 locks.

When the sliding door is locked, it is desirable to prevent the entry of wind and rain. For that purpose, the rear end face of the front door frame and the front end face of the rear door frame must be in close contact with each other, and each sliding door must be pressed in the closing direction to close the opening hermetically. However, in the conventional lock using a screw, the rear end face of the front fitting frame and the front end face of the rear fitting frame are closely sealed. They can be worn, but each sliding door cannot be pushed in the closing direction. Therefore, in the simple lock 5 shown in Fig. 36, the insertion fringe portion 6 of the male body 2 into the female body 4 is widened as it is inserted, and the distance from the circumferential portion 6 to the rotation center 7 is shortened next. Thus, the sliding doors 8 and 8 are pressed in the closing direction and the fitting frames 1 and 3 are brought into close contact with each other. However, since this breakage 5 is attached to the side end faces Γ, 3 'of the fitting frames 1 and 3, when the transparent doors 8 and 8 are made of transparent glass, the attachment position is Obviously, the glass is cut and easily unlocked, which is not desirable for crime prevention.

In view of the above, it is an object of the present invention to provide a simple lock which can be provided with a sliding door and can close the opening hermetically, which is convenient to handle and excellent in crime prevention.

Announcement of announcement

The present invention is a simple lock of a pair of front and rear sliding doors, which is attached to a building opening in a laterally slidable manner and has a fitting frame that is overlapped in the front and rear when the opening is closed. The frame includes a locking body that is movable in the front-rear direction and is rotatable around its axis, and a locked body having an opening along the front end face of the rear fitting frame, and the locking body has a draw part. The pulling part is provided so that it can be retracted from the rear end face of the front fitting frame by a predetermined dimension by the forward and backward movement of the locking body and can be slidably removed from the opening. A pressing surface having an eccentric pressing surface for pressing the pair of sliding doors in the closing direction by rotating within the opening of the drawing part. A pressed surface is provided along the periphery of the opening by the rotation of the lock, and the pulling part rotates in the opening to pull the locked object to pull the locked object and the rear end surface of the front fitting frame and the rear fitting frame. A simple lock for a sliding door, characterized in that a cam surface is formed between the pulling portion and the rear end surface of the locked body so as to closely contact the front end surface.

According to the present invention, when the building opening is closed by the sliding door, by moving the locking body held by the front fitting frame rearward and then rotating it around the moving axis, the front fitting The pulling part and the pulling part project from the rear end surface of the frame and are inserted into the opening of the locked body, and the pulling part and the pulling part rotate within the opening. Then, since the pressing surface of the drawing part is eccentric from the rotation center of the stopper, the pressed surface provided along the opening perimeter corresponds to the eccentric dimension in the closing direction of the pair of sliding doors. Can be pressed. In addition, since the projecting size of the pulling part from the rear end face of the front fitting frame is set to a predetermined size, the pulling part is set inside the opening by the cam surface interposed between the pulling part and the locked body. When rotated, the locked body moves relatively to the locking body side. As a result, the rear end surface of the front fitting frame in which the pulling portion projects can be brought into close contact with the front end surface of the rear fitting frame in which the slaved body is fixed. In addition, the engagement between the pulling part and the locked body via the cam surface holds the engagement between the pressing surface of the drawing part and the pressed surface of the opening, and the sliding door slides in the left-right direction. Is regulated. In addition, the simple lock is blocked by the fitting frame and The mounting position cannot be seen. Therefore, it is preferable for crime prevention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 10 relate to the first embodiment of the present invention, and FIG. 1 is a vertical sectional side view in the unlocked state of a simple lock attached to a sliding door. Fig. 2 is a plan view of the same longitudinal section, Fig. 3 is a side view of the longitudinal section with the locking body moved backward, Fig. 4 is a side view of the longitudinal section in the locked state, and Fig. 5 is the locked state. Fig. 6 is a vertical plan view of Fig. 6, Fig. 6 is an exploded perspective view of the simple lock, Fig. 7 is a front view of the simple lock attached to the sliding door, and Figs. 8 and 9 are explanations of the operation of the draw part. Fig. 10 is a sectional view for explaining the shape of the cam surface, Figs. 11 and 12 are perspective views of the snap stoppers according to different embodiments, and Fig. 13 is a locked state according to different embodiments. Figures 14 to 26 relate to the second embodiment of the present invention, and Figure U is a vertical plan view of the simple lock attached to the sliding door in the unraveled state, and Figure 15 Fig. 16 is a vertical sectional side view, Fig. 16 is a vertical sectional plan view with the locking body moved rearward, Fig. 17 is a vertical sectional side view, and Fig. 18 is a vertical sectional plan view in the locked state. Is a vertical side view in the locked state, Fig. 20 is an exploded perspective view of a simple lock, Fig. 21 is a plan view of a holding cylinder, Fig. 22 is a left side view of the same, Fig. 23 is a front view of the same, Fig. 24 is a right side view of the same, Fig. 25 is a bottom view of the same, Fig. 26 is a rear perspective view of the locked body, and Fig. 27 is a rear perspective view of the locked body according to a different embodiment. Figures 31 through 31 relate to the third embodiment of the present invention. Figure 28 is a front view of the main part of a simple lock with a cutaway view, Figure 29 is a vertical side view of the same part, and Figures 30 and 31 show the same work. Fig. 32 to Fig. 35 relate to other different embodiments. Fig. 32 is a perspective view of a locking body, a drawing part and a drawing part, and Fig. 33 is a drawing. Fig. 34 is a rear perspective view of the locked body, Fig. 34 is a vertical plan view of the simple lock attached to the sliding door in the locked state, and Fig. 35 is a perspective view of the locked body showing another embodiment. FIG. 36 is a perspective view of a simple lock according to a conventional example.

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 10 relate to the first embodiment of the present invention, and 9 is a simple lock made of rope, which is slidably attached to the building opening 10 in the left and right directions as shown in FIG. It is attached to a pair of sliding doors 13, 13. Each of the sliding doors 13, 13 has a fitting frame 11, 12 that is in a front-rear state when the opening 10 is closed. In this embodiment, the front side means the indoor side, and the rear side means the outdoor side.

The simple lock 9 is secured to the front fitting frame 11 so as to be movable in the front-rear direction and rotatable about its axis, and is fixed to the rear fitting frame 12 and extends along the front end face 12 ′ of the fitting frame 12. And a locked body 15 having an opening 33.

The locking body 14 is formed by machining into a stepped columnar shape with a flange 16 at the front end, and a knob mounting shaft 18 extends from the center of the front end surface of the flange 16. A knob 19 is inserted into the tip of the knob attachment shaft 18 and fixed by a screw 20. In addition, from the rear end surface of the locking body 14, a drawing part 21 extending in the front-rear direction and a drawing part 22 orthogonal to the tip of the drawing part 21 are drawn. And are integrally formed to form an L shape. Here, the side surface of the draw portion 21 which is most eccentric in the radial direction from the rotation center of the locking body 14 is a pressing surface 23.

The draw part 21 and the draw part 22 may be separately formed from the locking body 14 and attached.

Then, the locking body 14 is held by the front fitting frame 11 via the holding cylinder 24. For this holding, first, a holding cylinder 24 whose front end is a mounting flange 25 is inserted into the front fitting frame 11 with its axis aligned in the front-rear direction, and the spring washer 26 and the spring receiving lever are inserted into the holding cylinder 24. The compression coil panel 28, which is sandwiched between the ring 27 and the ring 27, is loosely inserted. Here, the spring washer 26 engages with the step 32 inside the holding cylinder 24. Then, the locking body 14 is inserted, so that the spring 28 is wound around the locking body 14. Here, the spring receiving ring 27 engages with the flange 16 at the front end of the locking body 14. Then, the knob attachment shaft 18 of the locking body 14 is inserted into the through hole 30 of the rectangular mounting plate 29, and the mounting bar 29 becomes a superposition horn on the mounting flange 25 of the holding cylinder body 24, and a pair of screws 31 and 31 are attached. The mounting sill 29 and the mounting flange 25 are fixed to the front end face of the front fitting frame 11 via the mounting bracket 29.

As a result, the locking body 14 is held by the front fitting frame 11 so as to be movable in the front-rear direction and rotatable about its axis. Further, by the forward and backward movement of the locking body 14, the draw part 21 and the draw part 22 can be freely retracted from the front fitting frame 11 rear end face 1 Γ. Here, the step portion 17 of the stepped cylindrical locking body 14 comes into contact with the spring washer 26 when the locking body 14 is moved rearward by a predetermined dimension, and is locked. Restricts backward movement of the body. The rearward movement of the sealing member is regulated to a predetermined dimension, so that the above-mentioned draw part

The entrance and exit of 21 and the pulling part 22 from the front fitting frame 11 rear end face 1 Γ is also regulated to a predetermined dimension.

Next, the locked body 15 has a rectangular plate shape, and a rectangular opening 33 is formed in the center thereof. Then, the locked body 15 is provided with screws 34, 34 along the front end face 12 ′ of the rear fitting frame 12 so that the opening 33 is located at a position corresponding to the longitudinal movement axis of the locking body 14. It is fixed. Here, the rear part of the opening 33 of the rear fitting frame 12 is hollowed out to form a recess 35. As a result, the drawing section 21 and the drawing section 22 can be inserted into and removed from the opening 33 by being projected from the front fitting frame 11 rear end surface 1 Γ.

A pressed surface 36, against which the pressing surface 23 is pressed by the rotation of the drawing portion 21 in the opening 33, is provided along the longitudinal circumferential side of the opening 33. In this embodiment, a rear projecting wall 37 is provided so as to project from one side of the circumferential cloth, and the inner wall surface thereof serves as the pressed surface 36. Instead of providing such a protruding wall 37, the inner peripheral wall surface of the opening 33 may be the pressed surface 36. However, by providing the protruding wall 37 as in the present embodiment, the contact area with the pressing surface 23 becomes large and a stable large pressing force is generated.

As shown in FIGS. 8 and 9, the pressing surface 23 presses the pressed surface 36 with the eccentric dimension X from the rotation center 38 of the locking body 14 to the pressing surface 23 being pressed from the rotation center 38. It is made larger than the dimension Y up to the surface 36, and the locked body 15 is moved in the left-right direction relative to the locking body 14 by the dimension difference Z. As a result, the pair of sliding doors 13, 13 are pressed in the closing direction.

Further, from the peripheral edge of the opening 33 on the opposite side of the pressed surface 36, a convex portion 39 is provided in the opening 33 in an overhanging hood. As shown in FIG. 10, the central portion of the convex portion 39 is bulged more than the rear end surface 15 ′ of the locked body 15, and the bulged surface is the cam surface 40. Further, both ends 40 ', 40' of the cam surface 40 are more immersed than the rear end surface 15 'of the locked body 15. As a result, when the attracting portion 22 rotates in the opening 33, the projecting dimension of the attracting portion 22 is regulated to a predetermined dimension, so the attracting portion 22 is guided and slid on the cam surface 40. Then, the locked body 15 moves relatively to the locking body 14 side. Then, the swelling dimension of the cam surface 40 from the rear end surface 15 ′ of the locked body 15 is set to a predetermined dimension corresponding to the predetermined projecting dimension of the pulling part 22 from the rear end surface 1 of the front fitting frame 11. By the relative movement of the locked body 15 toward the locking body 14, the front fitting frame 11 rear end surface 11 'and the rear fitting frame 12 front end surface 12 ^: can be brought into close contact with each other. It should be noted that both ends 40 '40' of the cam surface 40 are more recessed and recessed than the rear end surface 15 'of the locked body 15, so that the pulling part 22 will be guided when it is guided onto the cam surface 40. That's not it.

In order to lock the sliding doors 13 '13 in the simple lock 9 constructed as described above, the locking body 14 in the unlocked state shown in Figs. As shown in FIG. 3, the draw part 21 and the draw part 22 are put into the opening 33 in a kneading state. Then, when the knob 19 is turned 90 degrees, the opening 33 is As the drawing part 21 and the drawing part 22 rotate, as shown in FIGS. 4 and 5, the pair of sliding doors 13, 13 are pressed in the closing direction and the front fitting frame 11 rear end face 1 Γ And the rear fitting frame 12 and the front end face 12 'are in close contact with each other. Further, the engagement of the pressing surface 23 of the pulling station 21 and the pressed surface 36 of the opening 33 is maintained by the engagement of the pulling part 22 and the locked body 15 via the cam surface 40, and the sliding door The left and right slides of 13 and 13 are regulated and locked. As a result, the sliding doors 13 and 13 can be locked, and the building opening 10 can be closed in a sealed manner by the sliding doors 13 and 13. Moreover, since the simple lock 9 is blocked by the fitting frames 11 and 12 and the mounting position cannot be seen from the outside, it is excellent in crime prevention. If the knob mounting shaft 18 can be attached to and detached from the locking body 14 so that it can be detached at the time of locking, it cannot be easily unlocked, which is preferable for crime prevention.

To unlock the simple lock 9, if the knob 19 is rotated 90 degrees in the opposite direction to the previous direction, the elastic force of the spring 27 causes the locking body 14 to move backward, and the unlocking of FIG. 1 is performed again. It will be in a locked state.

The locking body 14 is formed into a desired shape by bending it with a bar as shown in Fig. 11 or by polymer-bonding a plurality of punched plate-like members 41 as shown in Fig. 12. By doing so, the cost can be reduced as compared with the case of forming by machining as in the above embodiment.

Further, in the above embodiment, the cam surface 40 is formed such that the central portion thereof is bulged from the rear end surface 15 ′ of the locked body 15 and both ends 40 ′ and 40 ′ are recessed. Therefore, although the pulling part 22 can be guided regardless of its rotation direction, the lower half part 40a may be bulged and the upper half part 40b may be immersive as shown in FIG. In this case, since the pulling portion 22 is guided on the cam surface 40 only by one-way rotation from the upper half 40b side to the lower half 40a side, the rotation range of the locking body 22 is restricted to a predetermined range. , It is convenient to write the letters “open / closed” on the surface of the mounting plate 29 of the holding cylinder 24 in correspondence with the rotation direction of the locking body 14.

The cam surface 40 does not have to be formed on the locked body 15 side-it may be formed on the attracting portion 22 side so as to be interposed between the locked body 15 and the rear end surface 15 '. It may be formed on both the side of the locking body 15 and the side of the pulling portion 22. In short, it may be formed so as to be interposed between the pulling portion 22 and the rear end surface 15 ′ of the locked body 15. The one shown in FIGS. 14 to 26 is the second embodiment of the present invention. In this embodiment, the locking body 14 is a bar, and by bending the rear end of the locking body 14, the drawing portion 21 is eccentric to the center of the locking body 14 and the drawing portion 21 is perpendicular to the tip of the drawing portion 21. The gathering portion 22 is formed.

The locking body 14 is held by the front fitting frame 11 via the holding cylinder 24. As shown in FIGS. 21 to 25, the hoisting tubular body 24 is attached to the front end of a tie member to form a mounting flange 25, and the front end portion 24 of the holding tubular body 24 is projected from the front surface thereof. Be done. Further, at the rear portion of the holding cylinder 24, a split groove 43 is provided along both sides of the drawing portion 21 and the drawing portion 22 when the retaining body 14 is passed through the holding cylinder 24. Also holding cylinder 24 The inner diameter of is small in size by providing a step portion 45 in the middle. Further, on the front surface of the mounting flange 25, a rotation restricting portion 42 and a reverse rotation preventing locking portion 46 are provided in a protruding manner.

In order to hold the locking body 14 via the holding cylinder 24, first, the locking body 14 is loosely inserted into the holding cylinder 24 from the rear side, and then the compression coil spring 28 is inserted into the holding cylinder body 24 from the front side. The body is made into a dress. At this time, the rear end of the spring 28 contacts the step portion 45. Then, the decorative cylinder 44 is loosely inserted into the holding cylinder body 24 from the front so that the locking body 14 and the spring 28 are externally fitted. The front end of the decorative tube 44 is provided with an inwardly extending portion 44 ′, and the front end of the spring 28 contacts the overhanging portion 44 ′. Then, the knob 19 is externally fitted to the tip of the locking body 14 protruding from the decorative cylinder 44 and fixed by the screw 20. Here, a catching sphere 48 is elastically retractable from the rear end surface of the knob 19 through a compression coil spring 49 so as to be retractable. Then, the holding cylinder 24 is inserted into the mounting hole 47 penetrating the front fitting frame 11 in the front-rear direction, and the mounting flange 25 is inserted into the front fitting frame 11 by the pair of screws 31 and 31. Stuck to.

As a result, the locking body 14 is held by the front fitting frame 11 while being movable in the front-rear direction and rotatable about its axis. Here, the forward movement is restricted by the rear end of the draw part 21 coming into contact with the step part 45 of the holding cylinder 24. Then, at the foremost position, the drawing part 21 and the drawing part 22 are in a retracted state from the front fitting frame 11 rear end face 1 Γ. At this time, split grooves 43 are formed along both sides of the drawn portion 21 and the drawn portion. The locking body 14 is non-rotatably restrained. Further, the rearward movement of the stopper 14 is restricted by the knob 19 contacting the front end face of the holding cylinder 24, whereby the draw part 21 and the draw part 22 are connected to the front fitting frame 11 rear end face. It is more likely that a given size will appear and disappear. When the locking body 14 moves rearward, the spring 28 is compressed and urges the locking body 14 forward.

Next, the locked body 15 has a rectangular shape as shown in FIG. 26, and a rectangular opening 33 is formed in the center thereof. A force surface 40 is formed on the rear end surface 15 'of the locked body 15 along the circumference of the opening 33 on the opposite side of the pressed surface 36. The cam surface 40 is formed into a chevron-shaped protrusion from the rear end surface 15 'of the locked body 15 and has a flat central portion.

In order to lock the sliding door 13 '13 in the simple lock 9 configured as described above, the locking body 14 in the unlocked state shown in FIGS. 14 and 15 is moved backward by holding the knob 19. As shown in FIGS. 16 and 17, the draw part 21 and the draw part 22 are inserted into the opening 33. Then, when the knob 19 is rotated clockwise by 90 degrees toward the sliding door 13, the draw part 21 and the draw part 22 rotate in the opening 33, and as shown in FIG. 18 and FIG. When the sliding doors 13 and 13 are pressed in the closing direction, the front door frame 11 rear end face 1 Γ and the rear door frame 12 front end face 12 'come into close contact with each other. Further, the forward movement of the locking body 14 is restricted by the engagement of the pulling portion 22 and the locking body 15 via the cam surface 40, so that the pressing surface 23. of the drawing portion 21 and the pressed surface 36 of the opening 33. Engagement with The sliding doors 13 and 13 are held, and the sliding of the sliding doors 13 and 13 in the left-right direction is restricted, so that the sliding doors are locked. As a result, the sliding doors 13, 13 can be locked and the building opening 10 can be closed in a sealed manner by the sliding doors 13, 13. At this time, the knob 19 is rotated 90 degrees clockwise toward the sliding door 13 at the time of locking, and the side surface of the knob 19 comes into contact with the rotation restricting portion 42 as shown in FIG. Rotation is restricted. On the other hand, when the knob 19 is rotated counterclockwise toward the sliding door 13 when locking, the pulling part 22 contacts the pressed surface 36 and the drawing part 21 contacts the periphery of the opening 33. There is no rotation by hitting. As a result, the rotation of the locking body 14 is constrained by the split groove 43 so that it cannot rotate when the pulling portion 21 and the pulling portion ^ are in the retracted state from the front fitting frame 11 rear end face 1 Γ, and they project. The rotation range can be limited to the 90 degree rotation range while in the opening 33. Therefore, it is possible to move the locking body 14 rearward and then rotate it for locking and unlocking in a fixed direction.Furthermore, the rotation position of the locking body can be set between the locked and unlocked states. It can be positioned reliably and is convenient to handle.

In addition, in this embodiment, the hook ball 48 is attached to the knob 19, and when the knob 19 is rotated for locking, the hook ball 48 comes into contact with the rotation preventing locking portion 46. 19 It is retracted from the rear end surface, and when it goes over the locking part 46 and reaches the locked position, it projects again. Then, as long as the sliding door 13 is shaken, the latching ball 48 comes into contact with the locking portion 46 so that the locking body 1'4. It does not rotate backward in the unlocking direction, which is preferable for crime prevention.

In the above embodiment, the rotation restricting portion 42 is provided on the front surface of the mounting flange 25, and the rotation of the locking body 14 is restricted by engaging the knob 19 with the falling surface. As shown, the rotation restricting portion 42 may be provided rearward from the lower end of the cam surface 40, and the pulling portion 22 may engage with this to restrict the rotation of the locking body 14.

FIGS. 28 to 31 show the third embodiment of the present invention. The difference from the above embodiment is that the locking body 14 is made shorter so that it does not protrude from the front end face of the front fitting frame 11. When the nut 50 is screwed onto the front end of the grand stopper 14 and the spring 28 is received instead of the ornamental cylinder 44, the soldier 51 is detachably screwed onto the front end face of the locking body 14. A knob attachment hood 18 is pivotally attached to the connector 51 so as to be vertically swingable, and a knob 19 is attached to this.

As a result, by removing the connector 51 together with the knob 19 as shown in Fig. 30 during locking, there is no risk of unlocking even if the window glass is broken, which is preferable for crime prevention. Further, since the knob 19 can be swung up and down, it is possible to prevent the knob 19 from interfering with the sliding door 13 before the sliding door 13 as shown in FIG.

32 to 34 also show an embodiment different from the above embodiment. The difference from the above embodiment is that the draw part 21, the draw part 22 and the locked body 15 are contoured. It's just changed. That is, from the rear end of the barbed locking body 14 as shown in Fig. 32, T-shapes are provided by providing overhanging parts in both orthogonal directions, and the overhanging parts are used as the drawing part 21 and the drawing part 22. Then, as shown in FIG. 33, a pair of central expansion surfaces 40, 40 are formed on the rear end surface 15 ′ of the locked body 15 along the longitudinally opposed circumferences of the opening 33, and at the same time, one of them is formed. A projecting wall 37 is provided on the outer side surface of the cam surface 40 along the circumference of the opening 33 so as to project rearward, and an inner wall surface thereof serves as a pressed surface 36.

As a result, as shown in Fig. 34, the portion protruding from the rear end of the locking body 14 can pull the locked body 15 through the cam surfaces 40, 40, and from the center of the locking body. The most eccentric portion can press the pressed surface 36 as the pressing surface 23 to draw the sliding door 13.

Incidentally, FIG. 35 shows another embodiment of the locked ^ 15, in which the ΠΠ portion 40a is formed at the center of the cam surface 40 to ensure the stable holding of the pulling portion 22. ing.

The sliding direction of the sliding door may be left / right or up / down.

INDUSTRIAL APPLICABILITY The present invention can be used for sliding windows and doors that can slide freely in the left and right directions, and windows and doors that can slide in the up and down directions.

Claims

The model of the request

1. A simple lock of a pair of front and rear sliding doors 13 and 13 that are freely slidably attached to the building opening 10 and that have fitting frames 11 and 12 that overlap in the front and rear when the opening 10 is closed. 9 is a locking member 14 which is held by the front fitting frame 11 so as to be movable in the front-rear direction and swivelable around the front fitting frame 14, and is fixed to the rear fitting frame 12 and the fitting frame 12 front end face 12 ^s A lockable body 15 having an opening 33 extending along the front side of the locking body 14 and a pulling section 22. The pulling part has a pressing surface 23 that is eccentric from the rotation center of the locking body 14, and the pulling part 21 has a surface rolling inside the opening 33. The pressing surface 23 is pressed along the opening 33 so as to press the pair of pulling doors 13 in the closing direction, and the pressed surface 36 is provided along the opening 33 '. By rotating in the opening 33, the locked body 15 is drawn to bring the front fitting frame 11 rear end surface 11 ′ and the rear fitting frame 12 front end surface 12 ′ into close contact with each other. A simple lock for a sliding door, characterized in that a cam surface 40 is formed between the rear end surface 15 'and

2. The locking body 14 is held by a holding cylinder 24 fixed to the front fitting frame 1L so as to be openable / closable and axially movable, according to claim 1. Simple lock for sliding doors.

3. The holding cylinder 24 has a structure in which the rotation of the locking body 14 When the 21 and the pulling part 22 are in the state of being retracted from the rear end face 1 of the front fitting frame 11, they are constrained so that they cannot rotate, and when they project and are in the opening 33, they have means for limiting the rotation range to a predetermined range. The simple lock for the sliding door according to claim 2.

. The simple lock for the sliding door according to claim 2, wherein the holding cylinder 24 has a spring 28 that biases the locking body 14 forward.