WO2008075569A1 - 小型ロータリエンコーダ - Google Patents
小型ロータリエンコーダ Download PDFInfo
- Publication number
- WO2008075569A1 WO2008075569A1 PCT/JP2007/073643 JP2007073643W WO2008075569A1 WO 2008075569 A1 WO2008075569 A1 WO 2008075569A1 JP 2007073643 W JP2007073643 W JP 2007073643W WO 2008075569 A1 WO2008075569 A1 WO 2008075569A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- encoder
- case
- encoder case
- rotary encoder
- Prior art date
Links
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
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/24—Housings ; Casings for instruments
- G01D11/245—Housings for sensors
Definitions
- the present invention relates to a small-sized rotary encoder for detecting the rotation speed and rotation direction of a motor.
- an encoder having a sensor for obtaining information for two phases of A phase and B phase has been used.
- such an encoder includes a rotatable magnetic disk 15 and a fixed magnetic sensor 16, and the output voltage of the magnetic sensor 16 changes as the magnetic disk 15 rotates.
- the rectangular wave signal is obtained through the comparator.
- the magnetic microencoder 17 includes a magnetic disk 19, magnetic sensors 22a and 22b, and a housing 24.
- the magnetic disk 19 is magnetized in the axial direction, and is provided on the rotating shaft 18 together with the first back yoke 20.
- the magnetic sensors 22a and 22b are arranged to face each other through a gap in the axial direction of the magnetic disk 19, and the flexible printed circuit board has a longitudinal direction substantially parallel to the strip-shaped wiring portion 21a of the flexible printed circuit board 21. It is provided in 21 sensor mounting portions 21b.
- a second back yoke 23 that forms a magnetic circuit together with the first back yoke 20 and the magnetic disk 19 is provided on the back surface of the magnetic sensors 22a and 22b via the flexible printed circuit board 21.
- the housing 24 accommodates the first back yoke 20, the magnetic disk 19, the magnetic sensors 22a and 22b, and the second back yoke 23. At this time, the housing 24 is provided with a notch 24a for pulling out the strip-like wiring portion 21a of the flexible printed circuit board 21, and the flexible printed circuit board 21 is fitted and fixed to the housing 24! /, (Patent Document 1).
- Patent Document 1 International Publication WO03 / 016829
- the arrangement of electronic components such as a magnetic sensor for detecting both the A phase and the B phase is magnetic in the radial direction of the magnetic disk due to the space in the housing.
- An arrangement method for arranging the sensors is conceivable.
- the present invention solves the above-mentioned problems, and can easily place and fix the substrate at a desired position without changing the dimensional tolerances of the housing and the substrate.
- the aim is to provide a compact rotary encoder that does not require a jig for curing.
- the invention of claim 1 is a small rotary encoder comprising a magnetic disk, a substrate on which a sensor IC and an output cable are arranged, and a cylindrical encoder case for housing them.
- a slit is provided in the encoder case, and a claw portion protruding in the radial direction on the inner peripheral surface of the encoder case and a step portion for positioning the substrate in the axial direction are provided, and the substrate is attached to the step portion and the claw. That fixed in the The feature is a small rotary encoder.
- the small rotary encoder according to claim 1 is characterized in that the encoder case inner peripheral surface and the substrate are provided with uneven portions to be assembled with each other.
- the small rotary encoder according to claim 1 or 2 is characterized in that the slit is formed in a plurality of places in a bowl shape.
- a small rotary encoder composed of a cylindrical encoder case, a magnetic disk, a substrate on which a sensor IC and an output cable are arranged! /, The inner peripheral surface of the encoder case
- a claw portion protruding in the radial direction and a step portion for positioning the substrate in the axial direction are provided, and a part of the force of the encoder case is provided on the encoder case so as to have a leaf spring shape having the claw portion.
- a small rotary encoder 1 according to the best mode of the present invention includes a cylindrical encoder case 2, a magnetic disk 4 provided at one end of a rotating shaft 3, and a sensor 5. It consists of a substrate 8 and a cap 9 on which terminals 7 for connecting the IC6 and output cable (not shown) are arranged.
- FIG. 2 shows an exploded perspective view of the small rotary encoder 1 of the present invention viewed from the motor side.
- the encoder case 2 is fixed to a motor
- the magnetic disk 4 is fixed to one end of the rotating shaft 3
- the substrate 8 and the cap 9 are inserted and fixed to the encoder case 2 in this order. To go.
- FIG. 3 shows a perspective view of the encoder case 2 and the substrate 8 as seen from the substrate side.
- a part of the encoder case 2 becomes a leaf spring shape.
- a claw portion 12 projecting in the radial direction and a step portion 11 for positioning the substrate in the axial direction are formed on the inner peripheral surface thereof.
- the claw portion 12 is disposed on the side where the encoder case 2 is held by the slit 10 (a part of the encoder case 2 having a leaf spring shape by the slit 10).
- the substrate 8 is stopped as a stopper by the step portion 11 with respect to the insertion direction, and is sandwiched by the claw portion 12 with a uniform force, thereby using an adhesive or a jig. Therefore, the encoder case 2 can be easily fixed at a desired position.
- a convex portion 13 is provided on the inner peripheral surface of the encoder case 2 in the radial direction.
- the concave portion 14 is formed on the substrate 8 so as to be combined with the convex portion 13. Thereby, deviation in the circumferential direction is suppressed, and fixing at an appropriate position in the encoder case 2 can be easily performed.
- a plurality of bowl-shaped slits are provided, and a step portion, a claw portion, and a concavo-convex portion are provided on the inner peripheral surface of the encoder case, so that the substrate can be bonded to the It can be fixed without using it, and positioning of the substrate can be easily performed.
- FIG. 1 is a cross-sectional view of a small rotary encoder of the present invention.
- FIG. 2 is an exploded perspective view of a small rotary encoder of the present invention.
- FIG. 3 A perspective view of an encoder case and a substrate in the present invention. 4] It is a schematic diagram of a conventional encoder.
- FIG. 5 is an exploded perspective view of a conventional magnetic microencoder. Explanation of symbols
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/520,234 US7786727B2 (en) | 2006-12-21 | 2007-12-07 | Miniature rotary encoder |
CN2007800396702A CN101535771B (zh) | 2006-12-21 | 2007-12-07 | 小型旋转编码器 |
JP2008550100A JP4441597B2 (ja) | 2006-12-21 | 2007-12-07 | 小型ロータリエンコーダ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-344979 | 2006-12-21 | ||
JP2006344979 | 2006-12-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008075569A1 true WO2008075569A1 (ja) | 2008-06-26 |
Family
ID=39536202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/073643 WO2008075569A1 (ja) | 2006-12-21 | 2007-12-07 | 小型ロータリエンコーダ |
Country Status (4)
Country | Link |
---|---|
US (1) | US7786727B2 (ja) |
JP (1) | JP4441597B2 (ja) |
CN (1) | CN101535771B (ja) |
WO (1) | WO2008075569A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2020053992A1 (ja) * | 2018-09-12 | 2020-10-22 | 三菱電機株式会社 | 磁界遮蔽板付きエンコーダ |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5214869B2 (ja) * | 2006-10-30 | 2013-06-19 | Ntn株式会社 | 回転センサ付き転がり軸受 |
JP5401902B2 (ja) * | 2008-10-03 | 2014-01-29 | 日本電産株式会社 | モータ |
WO2019239488A1 (ja) * | 2018-06-12 | 2019-12-19 | 三菱電機株式会社 | エンコーダ及びサーボモータ |
EP3683552B1 (de) * | 2019-01-17 | 2021-03-10 | Dr. Johannes Heidenhain GmbH | Abtasteinheit für eine winkelmesseinrichtung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0380323U (ja) * | 1989-12-06 | 1991-08-16 | ||
JP2000146624A (ja) * | 1998-11-04 | 2000-05-26 | Agilent Technol Inc | エンコ―ダ・アセンブリ |
JP2001027551A (ja) * | 1999-07-14 | 2001-01-30 | Shinano Kenshi Co Ltd | 光学式エンコーダ |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0380323A (ja) | 1989-08-23 | 1991-04-05 | Fujitsu Ltd | ウインドウ表示制御方式 |
US5122741A (en) | 1989-12-06 | 1992-06-16 | Alps Electric Co., Ltd. | Holding members for sensor and wiring members of magnetic rotary encoder |
US6510750B2 (en) * | 2000-05-03 | 2003-01-28 | Cts Corporation | Steering wheel torque and position sensor |
JP4235105B2 (ja) | 2001-08-07 | 2009-03-11 | 並木精密宝石株式会社 | 磁気式マイクロエンコーダ及びマイクロモータ |
JP4203371B2 (ja) * | 2003-07-31 | 2008-12-24 | アルプス電気株式会社 | 回転検出装置及びこれを備えた自動車 |
ITPR20040037A1 (it) * | 2004-05-11 | 2004-08-11 | Biffi Italia | Sensore magnetico di posizione angolare assoluta per valvole azionate da attuatori elettrici a frazione di giro. |
US7208943B2 (en) * | 2005-06-03 | 2007-04-24 | Delphi Technologies, Inc. | Electrical device enclosure |
WO2007065496A1 (de) * | 2005-12-11 | 2007-06-14 | Valeo Schalter Und Sensoren Gmbh | Drehwinkelsensor und drehwinkelsensorsystem |
-
2007
- 2007-12-07 US US12/520,234 patent/US7786727B2/en not_active Expired - Fee Related
- 2007-12-07 JP JP2008550100A patent/JP4441597B2/ja not_active Expired - Fee Related
- 2007-12-07 WO PCT/JP2007/073643 patent/WO2008075569A1/ja active Application Filing
- 2007-12-07 CN CN2007800396702A patent/CN101535771B/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0380323U (ja) * | 1989-12-06 | 1991-08-16 | ||
JP2000146624A (ja) * | 1998-11-04 | 2000-05-26 | Agilent Technol Inc | エンコ―ダ・アセンブリ |
JP2001027551A (ja) * | 1999-07-14 | 2001-01-30 | Shinano Kenshi Co Ltd | 光学式エンコーダ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2020053992A1 (ja) * | 2018-09-12 | 2020-10-22 | 三菱電機株式会社 | 磁界遮蔽板付きエンコーダ |
Also Published As
Publication number | Publication date |
---|---|
US7786727B2 (en) | 2010-08-31 |
JP4441597B2 (ja) | 2010-03-31 |
CN101535771B (zh) | 2011-09-21 |
CN101535771A (zh) | 2009-09-16 |
US20100102802A1 (en) | 2010-04-29 |
JPWO2008075569A1 (ja) | 2010-04-08 |
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