WO1997033142A1 - Codeur modulaire et procede de fabrication correspondant - Google Patents
Codeur modulaire et procede de fabrication correspondant Download PDFInfo
- Publication number
- WO1997033142A1 WO1997033142A1 PCT/JP1997/000736 JP9700736W WO9733142A1 WO 1997033142 A1 WO1997033142 A1 WO 1997033142A1 JP 9700736 W JP9700736 W JP 9700736W WO 9733142 A1 WO9733142 A1 WO 9733142A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- holding member
- code plate
- fitting portion
- rotating device
- fixing member
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/34707—Scales; Discs, e.g. fixation, fabrication, compensation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
- G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
- G01D5/347—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells using displacement encoding scales
- G01D5/3473—Circular or rotary encoders
Definitions
- the present invention relates to a modular encoder for detecting a rotation speed and a rotation angle of a rotating device such as a motor. (Background technology)
- FIG. 4 is a perspective view showing a conventional modular encoder 1.
- the modular encoder 1 includes a mounting member 2 mounted on a rotating shaft of a motor, and a housing 3 mounted on a main body of the motor.
- the mounting member 2 is composed of a hollow cylindrical boss 4 that fits into the rotating shaft, and a light-transmitting light-shielding member that is formed on the boss 4 with a light-transmitting area and a light-shielding area and that is fixed to the boss 4 with a clasp 5, that is, a pulse disk 6.
- the housing 3 includes an electric board 8 on which an optical sensor is arranged, and a fixing member 9 on which a light source is arranged.
- the housing 3 is fixed by screws 10 to a fixing member 9 attached to the main body of the motor.
- the conventional modular encoder 1 is a separate modular encoder capable of separating a mounting member 2 and a housing 3 having an electric board 8 in a detector.
- the mounting member 2 has the boss 4 fitted on the rotating shaft of the motor 1 and is fixed to the rotating shaft with the set screw 11 from the side.
- Light from the light source is applied to the pulse disk 6, and the light that has passed through the light-transmitting region of the pulse disk 6 is received as an optical signal by the optical sensor, which converts the optical signal into an electrical signal.
- the electric component provided on the electric board 8 outputs this electric signal as a rotation position signal of the motor.
- the conventional electric board 8 and the fixing member 9 each have a circular shape as shown in FIG.
- the conventional modular encoder 1 requires the mounting member 2 When fixing to the rotating shaft, the set screw 1] had to be screwed from the lateral direction perpendicular to the rotating shaft, so that it could only be tightened from a certain direction of the rotating shaft. It was necessary to take measures against loosening of small set screws due to restrictions and dimensional restrictions.
- the electric board 8 and the fixing member 9 have a circular shape, it is difficult to reduce the size of the modular encoder 1. In other words, even if it is desired to reduce only the dimensions in a specific direction, the overall size must be reduced.
- the finger since the pulse disk 6 is exposed, the finger may be damaged by the pulse disk 6 during assembly or adjustment that requires a delicate feeling of the fingertip.
- the pulse disk 6 was made of a thin metal plate, it was necessary for the worker to take great care.
- an object of the present invention is to provide a modular encoder that is small, easy to assemble, has high reliability, has good mounting properties, is low in cost, and has excellent environmental resistance.
- a modular encoder includes a holding member on which a light source (light emitting element) is arranged, a code plate on which a light-transmitting region and a light-blocking region are formed, and a device for coding light from the light source. It consists of an optical sensor (light receiving element) that receives an optical signal through the translucent area of the plate and converts the optical signal into an electrical signal, and an electrical board on which the optical sensor is arranged.
- the light source may be provided not on the holding member but on the electric board, and the optical sensor may be provided not on the electric board but on the holding member. That is, the light source and the optical sensor need only be fixed to the main body of the rotating device.
- the holding member, the sign plate and the electric board It is assembled from the horizontal direction (axial direction of the rotating shaft) and fastened to the rotating shaft in the horizontal direction (axial direction) by a fastening device such as a screw. Therefore, the modular encoder can be easily assembled and installed, and at the same time, the reliability of the installation is improved.
- the code plate is attached to a boss, and the boss may be fixed to an end of the rotating shaft by a screw extending in an axial direction.
- the modular encoder according to the present invention can be downsized in the direction in which the dimensions need to be reduced by forming it into an elliptical shape whose minor axis is in the direction in which the dimensions need to be reduced. Therefore, it is preferable that the holding member and the electric board are formed in an oval shape.
- the modular encoder in an elliptical shape in this way, the user of the motor is less restricted in the motor mounting direction. For example, if the outer shape of the motor is adjusted in the short axis direction of the encoder, the user can use the motor by adjusting the two surfaces of the motor to the outer shape of the motor, because the normal motor is square.
- the other two surfaces are where the modular encoder protrudes from the motor body in the major axis direction, but one of these protruding parts is the part where the output code originally comes out. No.
- the other of the protrusions there is almost no case where the user uses the three sides of the motor at the same time, so there is no substantial obstacle. It is better to use one side of the motor body on the side with the protrusion to ensure horizontality with the axis of the encoder mounting.
- the modular encoder has an elliptical shape
- the size of the electric board can be increased.Thus, even if two electric boards were conventionally required, a single electric board can be used. For example, the cost can be reduced, and the height of the modular encoder can be reduced.
- the modular encoder has an elliptical shape, so that it does not hinder the tightening of the motor mounting bolts when attaching to the partner motor system.
- the housing since the housing has an elliptical shape, even if the housing is rotated with respect to the fixed member in magnetic pole adjustment, the amount of the housing protruding from the fixed portion is small, and the entire shape is displaced. It has the effect of being difficult.
- the holding member is preferably provided with elongated holes extending in a direction substantially perpendicular to the long diameter at both ends in the direction of the long diameter of the holding member so that the mounting position of the holding member can be adjusted.
- the holding member may be provided with a recess for accommodating the code plate. It is also preferable to have a wall surrounding the edge of the code plate. By forming the recess for accommodating the sign plate in the holding member in this manner, the wall surrounding the recess functions as a defense fence, so that the sign plate (light-transmitting Z light-shielding member) is made of a thin metal plate. In such a case, the rotation of the thin plate does not hurt the hand. In addition, since the code plate is inserted from the horizontal direction (the direction along the axis) with respect to the axis of the rotating shaft, the thin plate does not hurt the hand.
- a fixing member may be provided between the holding member and the rotating device. M.
- the body consisting of the holding member and the electric board can be rotated about the rotation axis of the rotating device.
- the holding member is rotatably fitted to the fixing member. This facilitates the positioning of the code plate.
- a modular encoder includes a step of attaching a fixing member to a rotating device and fastening in a direction along a rotation axis; a step of attaching a holding member to the fixing member and fastening in a direction along a rotation axis; Install the sign plate on the rotating shaft It may be manufactured by a manufacturing method including a step of attaching and fastening in a direction along the rotation axis, and a step of attaching an electric board to the holding member and fastening in a direction along the rotation axis.
- the modular encoder configured as described above can be assembled by inserting the driver from the axial direction of the rotating shaft, so that the assembly and the attachment to the rotating device are facilitated.
- the holding member Since the holding member is rotatably fitted to the fixed member so that the holding member can rotate about the rotation axis of the rotating device, the holding member moves radially with respect to the rotation axis when adjusting the origin. Adjustment is easy because there is no deviation.
- the dimensions in the desired direction can be reduced, and at the same time, the area of the electric board can be made larger. What required a substrate can be replaced with a single electric substrate, and miniaturization and cost reduction can be achieved.
- FIG. 1 shows a modular encoder of the present invention mounted on a motor.
- FIG. 2 is a partial sectional view taken along line II of FIG. 2.
- FIG. 2 is a plan view of a modular encoder according to the present invention.
- FIG. 3 is a partial sectional view of the modular encoder according to the present invention, taken along the line in-m of FIG.
- FIG. 4 is a perspective view showing a conventional modular encoder.
- FIG. 1 is a diagram showing a modular encoder 21 of the present invention mounted on a rotating device, that is, a motor 20. Motors 20 are mainly servo motors in many cases.
- FIG. 2 is a plan view of the modular encoder 21.
- FIG. FIG. 1 is a partial cross-sectional view taken along the line II of FIG.
- the modular encoder 21 is composed of a mounting member 23 fixed to the rotating shaft 22 of the motor 20 and a housing 25 fixed to the main body 24 of the motor 20 via the fixing member 34. Become.
- the mounting member 23 is formed of a hollow cylindrical boss 26 that fits into the rotating shaft 22 and a light-transmitting / light-shielding member, which is formed by forming a light-transmitting region and a light-shielding region and fixed to the boss 26 with a clasp 27.
- Plate (pulse disk) 28 The boss 26 has a shoulder 26a protruding radially inward in the hollow interior. The boss 26 is fitted so that the shoulder 26 a comes into contact with the end face of the rotating shaft 22. A female screw is cut into the end of the rotating shaft 22, and a screw 29 is screwed into the female screw so that the shoulder 26 a of the boss 26 is connected to the end face of the rotating shaft 22 and the head of the screw 29.
- the boss 26 is fixed to the rotating shaft 22 by being sandwiched between the bosses.
- the housing 25 includes an electric board 30 on which the light receiving element 32 is disposed, and a holding member 33 on which the light emitting element 31 is disposed.
- Case 25 The main body 24 is fixed to the main body 24 via a fixing member 34.
- the main body 24 is provided with a cylindrical projection 24 a substantially concentric with the rotation axis 22.
- An annular groove 24b is provided on the circumference of the cylindrical protrusion 24a, and an O-ring 35 is arranged in the annular groove 24b.
- the fixing member 34 has a columnar opening 34a formed therein, and the opening 34a is fitted to the protrusion 24a. ⁇ The ring 35 seals between the fixing member 34 and the projection 24a.
- a substantially cylindrical opening 34 b is formed on the side of the fixing member 4 opposite to the motor 20.
- the opening 34b is formed almost concentrically with the opening 34a.
- the opening 34b which is formed concentrically with the opening 34a, has a portion corresponding to the position where the light emitting element 31 is arranged.
- the holding member 33 is provided with a columnar projection 33 a and is fitted with the opening 34 of the fixing member 34.
- the wall portion 33c surrounding the concave portion 33b functions as a defensive funnel for preventing a finger from touching the code plate 28 made of a thin metal plate and cutting the finger.
- the electric board 30 is fixed to the holding member 33 by screws 36.
- a permanent magnet 50 is mounted on the rotating shaft 22 via a ring-shaped holding member.
- the electric substrate 30 is provided with a magnetic sensor 51 using an MR sensor (MR magnetoresistive element) for detecting a magnetic field of the permanent magnet 50. Based on the signal from the magnetic sensor 51, the rotation speed and rotation direction of the rotating shaft 22 can be detected.
- MR sensor MR magnetoresistive element
- the modular encoder 21 is covered with a cover 38.
- An annular groove 34 c is formed on the outer periphery of the fixing member 34, and an O-ring 37 is arranged in the annular groove 34 c.
- the 0 ring 37 seals between the fixed member 34 and the cover 38.
- Cover 3 8 is screw 4 It is fixed to the fixing member 3 by 5.
- the electric board 30, the holding member 33, and the fixing member 34 have an oval shape.
- the main body 24 of the motor 20 has a square shape.
- the width of the motor body 24 and the minor axis of the modular encoder 21 are formed to have substantially the same dimensions.
- the major axis of the modular encoder 2 i is formed to be larger than the width of the motor body 24.
- Fig. 3 is a partial cross-sectional view taken along the major axis (long axis) of the modular elbow 21 in the direction of the major axis (long axis), that is, the line m-1 ⁇ in Fig. 2.
- the 0 ring 35 is attached to the annular groove 24 b formed in the cylindrical projection 24 a of the main body 24 of the motor 20.
- the fixing member 34 is fitted with the opening ⁇ a of the fixing member 34 into the protruding portion 24 a, and the fixing member 34 is fixed to the main body 24 of the motor 20 with the screw 39.
- the cylindrical protrusion 24 a is formed substantially concentrically with the rotating shaft 22 of the motor 20, and the opening 34 a and the opening 34 b of the fixing member 34 are formed substantially concentrically Therefore, the opening 3 4 b and the rotation axis 22 are almost concentric.
- the protrusion 33 a of the holding member 33 provided with the light emitting element 31 is fitted into the opening 34 b of the fixing member 34, and the holding member 33 is fixed to the fixing member 34 with the screw 40.
- an attachment member 23 composed of the boss 26 and a code plate 28 fixed to the boss 26 with a clasp 27 is attached to the rotating shaft 22.
- the boss 26 is fitted into the rotating shaft 22, and the shoulder 26 a of the boss 26 is brought into contact with the end surface of the rotating shaft 22. Pass the screw 2 9 through the boss 26 and screw the screw 2 9 into the female screw of the rotating shaft 22, and clamp the shoulder 26 a of the boss 26 between the end face of the rotating shaft 22 and the head of the screw 29. Lock boss 2 6 to ⁇ 2 2 I do. At this time, adjustment is made so that the magnetic pole position of the motor 20 and the origin position of the code plate 28 substantially coincide.
- the electric board 30 provided with the light receiving element 32 is fixed to the holding member 33 with screws 36.
- a hole 38a is formed in the cover 38, and a rubber grommet 41 is attached to the hole 38a.
- the encoder output cable 42 connected to the electric component provided on the electric board 30 is connected to an external device via the grommet 41.
- the power cable 43 is connected to the motor 20.
- Power is supplied to the motor 20 through the power cable 43, and the motor 20 is rotated.
- the sign plate 28 is rotated by the rotation of the motor 20.
- the light from the light emitting element 3 1 is irradiated on the code plate 28, and the light passing through the transmissive area of the code plate 28 is received by the light receiving element 32 as an optical signal, and the light receiving element 32 receives the light signal.
- Is converted into an electric signal and this electric signal is output by an electric component provided on the electric board 30 as a rotation position signal of the motor.
- the rotation position signal and the magnetic pole position of the motor are monitored to adjust the magnetic pole.
- the hole 33d of the holding member 33 through which the screw 40 passes is formed as an elongated hole so that the enclave 25 can rotate only to a certain extent. Since the opening 3 4 b of the fixing member 34 is substantially concentric with the rotating shaft 22, even if the holding member 33 is rotated with respect to the fixing member 34, the holding member 33 cannot move the rotating shaft 22. It rotates as the center and does not shift in the radial direction of the rotation axis 22. Therefore, since the S body 25 can be rotated about the axis of the rotation shaft 22, the magnetic pole adjustment becomes easy. When the magnetic pole adjustment is completed, the holding member 33 is fixed to the fixing member 34 by tightening the screw 40.
- the modular encoder according to the present invention is useful as a modular encoder for detecting the number of rotations and the rotation angle in a rotating device such as a motor, and particularly, in the direction perpendicular to the rotational axis. It is suitable as a modular encoder for devices that cannot be set with screws.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/077,115 US6107621A (en) | 1996-03-08 | 1997-03-06 | Modular encoder and method of manufacturing the same |
KR1019980706753A KR100304129B1 (ko) | 1996-03-08 | 1997-03-06 | 모듈러엔코더및그제조방법 |
GB9813197A GB2324863B (en) | 1996-03-08 | 1997-03-06 | Modular Encoder |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8/51652 | 1996-03-08 | ||
JP8051652A JPH09243410A (ja) | 1996-03-08 | 1996-03-08 | モジュラーエンコーダ及びその製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997033142A1 true WO1997033142A1 (fr) | 1997-09-12 |
Family
ID=12892809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/000736 WO1997033142A1 (fr) | 1996-03-08 | 1997-03-06 | Codeur modulaire et procede de fabrication correspondant |
Country Status (5)
Country | Link |
---|---|
US (1) | US6107621A (ja) |
JP (1) | JPH09243410A (ja) |
KR (1) | KR100304129B1 (ja) |
GB (1) | GB2324863B (ja) |
WO (1) | WO1997033142A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5230482A (en) * | 1991-12-20 | 1993-07-27 | Honeywell Inc. | Electronic time thermostat with a temporary next period adjustment means |
US6608300B2 (en) | 2001-11-16 | 2003-08-19 | Encoder Products Co. | Modular encoder rotation sensing |
US20070138381A1 (en) * | 2005-12-16 | 2007-06-21 | Meschko John T | Optical encoder system |
GB0607425D0 (en) * | 2006-04-13 | 2006-05-24 | Trw Ltd | Rotor structures for motors |
US8360554B2 (en) * | 2007-07-19 | 2013-01-29 | Xerox Corporation | Modular encoder |
JP5597719B2 (ja) * | 2009-12-10 | 2014-10-01 | シーメンス アクチエンゲゼルシヤフト | モータの状態監視装置 |
DE102012202683A1 (de) * | 2012-02-22 | 2013-08-22 | Dr. Johannes Heidenhain Gmbh | Drehgeber |
KR101322905B1 (ko) * | 2012-04-30 | 2013-10-29 | 재단법인 포항지능로봇연구소 | 인코더용 지그 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6362718U (ja) * | 1986-10-13 | 1988-04-25 | ||
JPH0225109U (ja) * | 1988-08-08 | 1990-02-19 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4285595A (en) * | 1978-01-12 | 1981-08-25 | Electro-Craft Corporation | Modular encoder |
US4184071A (en) * | 1978-01-12 | 1980-01-15 | Electro-Craft Corporation | Modular encoder |
US4475034A (en) * | 1982-06-24 | 1984-10-02 | International Business Machines Corporation | Modular shaft encoder |
JPH0325109U (ja) * | 1989-07-20 | 1991-03-14 | ||
US5057684A (en) * | 1990-08-30 | 1991-10-15 | Robbins & Myers/Electro-Craft, A Wholly Owned Sub. Of Robbins & Myers, Inc. | Unitary aligning and gapping apparatus for modular optical shaft encoder |
US5708496A (en) * | 1996-03-11 | 1998-01-13 | Renco Encoders, Inc. | Modular optical shaft encoder having a slide gap centering mechanism and method of use |
-
1996
- 1996-03-08 JP JP8051652A patent/JPH09243410A/ja active Pending
-
1997
- 1997-03-06 KR KR1019980706753A patent/KR100304129B1/ko not_active IP Right Cessation
- 1997-03-06 US US09/077,115 patent/US6107621A/en not_active Expired - Lifetime
- 1997-03-06 WO PCT/JP1997/000736 patent/WO1997033142A1/ja active IP Right Grant
- 1997-03-06 GB GB9813197A patent/GB2324863B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6362718U (ja) * | 1986-10-13 | 1988-04-25 | ||
JPH0225109U (ja) * | 1988-08-08 | 1990-02-19 |
Also Published As
Publication number | Publication date |
---|---|
GB9813197D0 (en) | 1998-08-19 |
GB2324863A (en) | 1998-11-04 |
GB2324863B (en) | 2000-01-19 |
JPH09243410A (ja) | 1997-09-19 |
KR19990087344A (ko) | 1999-12-27 |
US6107621A (en) | 2000-08-22 |
KR100304129B1 (ko) | 2001-11-22 |
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