WO2011040249A1 - 回転角度検出装置 - Google Patents
回転角度検出装置 Download PDFInfo
- Publication number
- WO2011040249A1 WO2011040249A1 PCT/JP2010/066028 JP2010066028W WO2011040249A1 WO 2011040249 A1 WO2011040249 A1 WO 2011040249A1 JP 2010066028 W JP2010066028 W JP 2010066028W WO 2011040249 A1 WO2011040249 A1 WO 2011040249A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnet
- metal member
- housing
- rotation angle
- rotating member
- Prior art date
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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
- G01D5/14—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 the magnitude of a current or voltage
- G01D5/142—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 the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—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 the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
-
- 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 rotation angle detection device that detects a rotation angle of a detection object.
- the conventional rotation angle detection device rotates the shaft of the throttle valve in accordance with the opening / closing operation of the throttle valve disposed in the intake passage of the internal combustion engine, so that the rotation angle of the shaft (that is, the throttle valve A throttle position sensor for detecting an opening / closing angle is known (for example, see Patent Document 1).
- the rotation angle detection device including the throttle position sensor described in Patent Document 1 has a rotating shaft (rotating member) that rotates in accordance with the rotation of the shaft, and a periphery of the rotating shaft in synchronization with the rotation of the rotating shaft.
- a pair of rotating magnets, a magnetoelectric conversion element that is located behind the rotating shaft and detects a change in the magnitude (magnetic field strength) of the magnetic flux accompanying the rotating operation of each magnet, and a lower end portion of the rotating shaft are inserted and fixed.
- a substantially cylindrical cup-shaped magnetic member provided with an annular part having an insertion fixing part and a cylindrical part covering each magnet, an annular plate part having a through part through which the rotating shaft passes, and the cylinder A cylindrical portion covering the outer periphery of the shape portion, and a substantially cylindrical cup-shaped housing that houses the magnetic member.
- a rotation angle detection device is configured because the rotation angle detection device includes a housing that rotatably supports a rotation member that is a rotation shaft and a cover that houses a magnetoelectric conversion element.
- the applicant of the present application provides a magnet that rotates together with the rotating member in accordance with the rotation of the detected object as a rotation angle detecting device that can realize cost reduction in order to cope with the above-described problem, and with the rotation of the magnet
- a rotation angle detection device that outputs a detection signal corresponding to the rotation of the detected object by a magnetoelectric conversion element that detects the magnitude of a changing magnetic flux, and a metal member that rotatably supports the rotation member,
- the housing was integrally formed by insert molding (see Patent Document 2).
- the housing of the rotation angle detection device described in Patent Literature 2 includes a first storage portion that stores the magnet, and a second storage portion that stores the magnetoelectric conversion element.
- the storage portion and the second storage portion are partitioned.
- the second storage portion is filled with a filling member, and the magnetoelectric conversion element is stored and held in an airtight manner in the second storage portion of the housing.
- the metal member needs to be held when insert molding is performed on the housing, and the portion holding the metal member is exposed in the second storage portion after molding of the housing.
- the filling member When filling the second storage portion with the filling member, the filling member enters between the metal member and the housing from a portion exposed to the second storage portion of the metal member, There was a case of entering the first storage unit.
- the filling member that has entered the first housing portion cannot store the rotating member including the magnet, or the filling member that has entered the first housing portion has the magnet or the rotating member. May cause problems such as obstructing rotation of the magnet and the rotating member.
- the present invention pays attention to the above-described problems, and prevents the filling member filled in the second storage portion that stores the magnetoelectric conversion element from entering the first storage portion that stores the magnet.
- An angle detection device is provided.
- the present invention provides a rotating member, a magnet that is fixed to the rotating member and rotates as the rotating member rotates, and is arranged to face the magnet so that the magnet rotates to increase the magnetic field strength of the magnet.
- a magnetic detection package including a magnetoelectric conversion element to be detected; a housing having a first storage portion that rotatably stores the rotating member with reference to a partition; and a second storage portion that stores the magnetic detection package; A filling member filled so as to store and hold the magnetic detection package in the second storage unit in an airtight manner, and a rotating member that rotatably supports the second storage unit so that a part is exposed to the second storage unit.
- a rotation angle detecting device including a cylindrical metal member provided in the first storage portion, and being incorporated in the housing near a portion of the metal member exposed to the second storage portion. A portion, in which the filling member is provided for suppressing creeping distance extension that penetrates between the housing and the metal member.
- the creeping distance extension is a protrusion protruding from the metal member.
- the creeping distance extension is a recess recessed in the metal member.
- the creeping distance extension is an uneven portion provided on the metal member.
- the convex portion is provided on an end surface of the cylindrical metal member.
- An angle detection device can be provided.
- the rotation angle detection device 1 is mainly composed of a rotation member 2, a magnet 3, a magnetic detection package 4 incorporating a magnetoelectric conversion element 4 a, a housing 5, a circuit board 6, and wiring 7. Yes.
- L is a rotation axis of the rotating member 2 and the magnet 3.
- Rotating member 2 rotates together with the connected object to be detected, and is made of a synthetic resin material such as polyacetal.
- Rotating member 2 has a substantially cylindrical shape, and has a flange 2a on the outer periphery thereof without a break. And the airtight member mentioned later is provided under the collar part 2a in FIG. Furthermore, the small diameter part 2b with a small diameter is provided under the said airtight member. The small diameter portion 2b is provided with a concave portion 2c for connecting to the detected object. Moreover, the magnet 3 is provided above the collar part 2a in FIG.
- the magnet 3 is formed in a substantially cylindrical shape.
- the magnet 3 includes a plane 3a perpendicular to the rotation axis L.
- the magnet 3 is magnetized in two poles with the plane 3a as a boundary.
- the magnet 3 is fixed to the rotating member 2.
- the magnet 3 is provided integrally with the rotating member 2 by insert molding, and the rotating member 2 rotates around the rotation axis L of the rotating member 2. It is the structure which rotates with.
- the magnetic detection package 4 is obtained by covering a magnetoelectric conversion element 4a such as a Hall IC or MR element with a synthetic resin.
- the magnetic detection package 4 is provided on the circuit board 6, and the magnetoelectric transducer 4 a of the magnetic detection package 4 is electrically connected to the circuit board 6 through a lead (not shown), and rotates with the rotating member 2.
- the intensity of the magnetic field that changes according to the rotation of the motor is detected, the detected result is converted into a detection signal, and the detection signal is output to the outside through the wiring 7 electrically connected to the circuit board 6. .
- the housing 5 is made of a thermoplastic resin material such as polybutylene terephthalate and includes a base portion 5a formed in a substantially cylindrical shape.
- the base 5a is formed with a first storage portion 5b for rotatably storing the rotating member 2.
- a lower end portion 5c on the lower side of the base portion 5a forming the first storage portion 5b is bent inside the first storage portion 5b in order to fix a washer described later.
- a second storage portion 5 d for storing the magnetic detection package 4 and the circuit board 6 is formed on the upper side of the housing 5.
- the second storage portion 5 d is formed by a wall portion 5 e surrounding the circuit board 6.
- the inside of the second storage portion 5d is filled with the filling member 10.
- the filling member is made of a resin that hardens from a liquid made of epoxy, silicone, or the like to a solid, and is, for example, a UV curable resin or a thermosetting resin. It is stored and held in an airtight manner in the portion 5d.
- the first storage portion 5b and the second storage portion 5d are separated by a plate-like partition 5f so as not to communicate with each other, and the magnetic detection package 4 and the magnet 3 face each other with the partition 5f interposed therebetween. Is provided.
- the 1st accommodating part 5b, the 2nd accommodating part 5d, and the partition 5f are integrally formed.
- a cylindrical metal member 11 is provided in the first storage portion 5b and is integrally formed with the housing 5 by insert molding.
- the metal member 11 is made of a nonmagnetic material such as brass, and rotatably supports the rotating member 2. That is, the metal member 11 has a function as an axial support member that rotatably supports the rotating member 2 with the inner peripheral surface thereof in contact with the outer periphery of the rotating member 2. Further, a part 11a of the metal member 11 is exposed in the second storage portion 5d.
- the filling member 10 is prevented from entering between the metal member 11 and the housing 5 in a portion built in the housing 5.
- a creeping distance extension 11b is provided.
- the creeping distance extension portion 11 b is provided on the end surface 11 c of the cylindrical metal member 11. And it is provided inside the end surface 11c.
- the creeping distance extension portion 11 b is a convex portion 11 b protruding from the metal member 11 in the central axis direction of the cylindrical metal member 11.
- the cross-sectional shape of the convex portion 11b is rectangular.
- This convex part 11b is provided in the end surface 11c of the metal member 11 without a cut
- the convex portion 11 b is formed by rotating around the center of the cylindrical metal member 11 as an axis and cutting with a blade from the outside of the cylindrical metal member 11.
- the filling member 10 when the creeping distance extending portion 11b is provided, when the filling member 10 is filled in the second storage portion 5d, the filling member starts from the portion 11a exposed to the second storage portion 5d of the metal member 11. Even if 10 enters between the metal member 11 and the housing 5, the distance between the metal member 11 and the housing 5 from the exposed portion 11a to the first storage portion 5b becomes longer, and the filling member 10 can remain between the exposed portion 11a and the first storage portion 5b, and can be prevented from entering the first storage portion 5b.
- the convex portion 11b on the end surface 11c of the cylindrical metal member 11, it is easier to process by cutting than the case where it is provided on the cylindrical inner periphery of the cylindrical metal member 11, and the metal is inexpensive.
- the member 11 can be formed.
- the housing 5 is provided with a positioning portion 5j for determining an arrangement position of the circuit board 6.
- the positioning portion 5j is provided in the second storage portion 5d.
- the positioning portion 5j has a protruding shape before the circuit board 6 is fixed. However, in order to attach the circuit board 6, it is deformed by applying heat or the like so that the circuit board 6 does not come off.
- the circuit board 6 is made of, for example, a hard circuit board, is disposed along the partition 5f of the housing 5, and is housed and fixed in the second housing portion 5d of the housing 5.
- Various electronic components such as a magnetic detection package 4 and a capacitor are mounted on the circuit board 6.
- Reference numeral 6a denotes a hole through which the wiring 7 passes, and the wiring 7 passing through the hole 6a is electrically connected to a wiring pattern (not shown) of the circuit board 6 by solder (not shown).
- Reference numeral 6b denotes a positioning portion that determines the position where the circuit board 6 is disposed, and is a hole through which the positioning portion 5j of the housing 5 passes.
- the wiring 7 is formed by coating a good conductive metal such as copper with an insulating material.
- 7a is a packing which consists of elastic members, such as rubber
- 8 is an airtight member made of an elastic member such as rubber, and in this embodiment, a Y ring is used.
- the Y-ring 8 has a donut shape, and its cross-sectional shape is Y-shaped, and has a function of preventing foreign substances such as water from entering the first storage portion 5b of the rotation angle detection device 1. is doing.
- the Y ring 8 can suppress fluctuations of the magnet 3 due to vibration and can suppress post-detection by the magnetoelectric conversion element 4a due to its elasticity. Further, since the Y ring 8 has a small contact area with the rotating member 2 and the housing 5, the sliding resistance when the rotating member 2 rotates can be kept low. Instead of the Y ring 8, an X ring having an X-shaped cross section may be adopted. If the sliding resistance when the rotating member 2 rotates is not taken into consideration, it is possible to adopt an O-ring 8 having a circular cross section.
- the shape of the creeping distance extension portion 11b is a convex portion 11b protruding from the metal member 11, but is not limited to this embodiment.
- the creeping distance extension portion 11b is The concave part recessed in the metal member 11 may be sufficient, or the uneven part provided in the metal member 11 may be sufficient.
- the place where the creeping distance extension portion 11 b is provided is not limited to the end surface 11 c of the metal member 11, and may be provided on the outer peripheral surface of the metal member 11.
- grooved part is easy to process.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
Description
2 回転部材
3 磁石
4 磁気検出パッケージ
4a 磁電変換素子
5 ハウジング
5b 第1の収納部
5d 第2の収納部
5f 仕切り
10 充填部材
11 金属部材
11a 一部(露出部)
11b 円面距離延長部
11c 端面
Claims (5)
- 回転部材と、この回転部材に固定され前記回転部材の回転に伴って回転する磁石と、この磁石に対向して配置され前記磁石が回転することによって前記磁石の磁界の強さを検出する磁電変換素子を内蔵した磁気検出パッケージと、仕切りを基準として前記回転部材を回転自在に収納する第1の収納部と前記磁気検出パッケージを収納する第2の収納部とを有するハウジングと、前記第2の収納部に前記磁気検出パッケージを気密的に収納保持するように充填される充填部材と、前記回転部材を回転自在に支持し前記第2の収納部に一部が露出するように前記第1の収納部に設けられた円筒状の金属部材と、を備えた回転角度検出装置において、
前記金属部材の前記第2の収納部に露出した部分の近傍で、前記ハウジング内に内蔵された部分に、前記充填部材が前記金属部材と前記ハウジングとの間に浸入することを抑制する沿面距離延長部を設けたことを特徴とする回転角度検出装置。 - 前記沿面距離延長部が、前記金属部材から突出した凸部であることを特徴とする請求項1に記載の回転角度検出装置。
- 前記沿面距離延長部が、前記金属部材内に窪んだ凹部であることを特徴とする請求項1に記載の回転角度検出装置。
- 前記沿面距離延長部が、前記金属部材に設けた凹凸部であることを特徴とする請求項1に記載の回転角度検出装置。
- 前記凸部を前記筒状の金属部材の端面に設けたことを特徴とする請求項2に記載の回転角度検出装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/394,718 US9000758B2 (en) | 2009-09-30 | 2010-09-16 | Rotation angle detecting device |
EP10820368.8A EP2485013B1 (en) | 2009-09-30 | 2010-09-16 | Rotation angle detecting device |
CN201080043827.0A CN102549387B (zh) | 2009-09-30 | 2010-09-16 | 旋转角度检测装置 |
IN2718DEN2012 IN2012DN02718A (ja) | 2009-09-30 | 2012-03-29 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-227390 | 2009-09-30 | ||
JP2009227390A JP5344375B2 (ja) | 2009-09-30 | 2009-09-30 | 回転角度検出装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011040249A1 true WO2011040249A1 (ja) | 2011-04-07 |
Family
ID=43826075
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/066028 WO2011040249A1 (ja) | 2009-09-30 | 2010-09-16 | 回転角度検出装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9000758B2 (ja) |
EP (1) | EP2485013B1 (ja) |
JP (1) | JP5344375B2 (ja) |
CN (1) | CN102549387B (ja) |
IN (1) | IN2012DN02718A (ja) |
WO (1) | WO2011040249A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5800207B2 (ja) * | 2013-05-10 | 2015-10-28 | 株式会社デンソー | 回転位置検出装置 |
US20170343381A1 (en) * | 2015-01-05 | 2017-11-30 | Panasonic Intellectual Property Management Co. Ltd. | Rotation angle detection device and rotation angle detection unit using same |
JP2018088727A (ja) * | 2016-11-28 | 2018-06-07 | 日本電産サンキョー株式会社 | ギヤードモータ |
JP6741611B2 (ja) * | 2017-02-20 | 2020-08-19 | 株式会社不二工機 | 電動弁 |
JP6826727B2 (ja) | 2017-03-31 | 2021-02-10 | 株式会社不二工機 | 電動弁 |
SE542616C2 (en) | 2018-09-27 | 2020-06-16 | Leine & Linde Ab | Rotary encoder and method for manufacturing a rotary encoder |
EP3683551B1 (de) * | 2019-01-17 | 2021-03-10 | Dr. Johannes Heidenhain GmbH | Abtasteinheit für eine winkelmesseinrichtung |
WO2021117135A1 (ja) * | 2019-12-10 | 2021-06-17 | 三菱電機株式会社 | 磁気発生ユニット、回転角度検出装置、および回転電機 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09229714A (ja) * | 1996-02-28 | 1997-09-05 | Nippon Seiki Co Ltd | 回転検出器 |
JPH11153404A (ja) | 1997-11-21 | 1999-06-08 | Teikoku Tsushin Kogyo Co Ltd | 回転角度センサ |
JP2007327860A (ja) | 2006-06-08 | 2007-12-20 | Nippon Seiki Co Ltd | 角度検出器 |
WO2008081693A1 (ja) * | 2006-12-28 | 2008-07-10 | Nippon Seiki Co., Ltd. | 回転検出装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001289610A (ja) * | 1999-11-01 | 2001-10-19 | Denso Corp | 回転角度検出装置 |
JP4433886B2 (ja) * | 2004-06-02 | 2010-03-17 | 株式会社デンソー | 回転角度検出装置 |
US7019517B2 (en) * | 2004-07-20 | 2006-03-28 | Honeywell International Inc. | Offset magnet rotary position sensor |
US7230419B2 (en) * | 2005-06-03 | 2007-06-12 | Delphi Technologies, Inc. | Rotary position sensor |
JP4743040B2 (ja) | 2006-08-08 | 2011-08-10 | 株式会社デンソー | 回転角度検出装置 |
JP4979449B2 (ja) * | 2007-04-27 | 2012-07-18 | キヤノン株式会社 | 定着装置 |
JP5112997B2 (ja) * | 2008-09-12 | 2013-01-09 | Ntn株式会社 | 回転角度検出ユニット |
JP5189063B2 (ja) * | 2009-11-16 | 2013-04-24 | 愛三工業株式会社 | 回転角検出装置及びスロットル制御装置 |
JP5801566B2 (ja) * | 2011-02-15 | 2015-10-28 | 株式会社ミクニ | 回転角度検出装置 |
JP5741961B2 (ja) * | 2012-10-24 | 2015-07-01 | 株式会社デンソー | 回転角検出装置、および、これを用いた回転駆動装置 |
-
2009
- 2009-09-30 JP JP2009227390A patent/JP5344375B2/ja active Active
-
2010
- 2010-09-16 US US13/394,718 patent/US9000758B2/en active Active
- 2010-09-16 CN CN201080043827.0A patent/CN102549387B/zh not_active Expired - Fee Related
- 2010-09-16 WO PCT/JP2010/066028 patent/WO2011040249A1/ja active Application Filing
- 2010-09-16 EP EP10820368.8A patent/EP2485013B1/en active Active
-
2012
- 2012-03-29 IN IN2718DEN2012 patent/IN2012DN02718A/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09229714A (ja) * | 1996-02-28 | 1997-09-05 | Nippon Seiki Co Ltd | 回転検出器 |
JPH11153404A (ja) | 1997-11-21 | 1999-06-08 | Teikoku Tsushin Kogyo Co Ltd | 回転角度センサ |
JP2007327860A (ja) | 2006-06-08 | 2007-12-20 | Nippon Seiki Co Ltd | 角度検出器 |
WO2008081693A1 (ja) * | 2006-12-28 | 2008-07-10 | Nippon Seiki Co., Ltd. | 回転検出装置 |
Also Published As
Publication number | Publication date |
---|---|
CN102549387B (zh) | 2015-04-08 |
JP5344375B2 (ja) | 2013-11-20 |
US20120169325A1 (en) | 2012-07-05 |
IN2012DN02718A (ja) | 2015-09-11 |
JP2011075413A (ja) | 2011-04-14 |
EP2485013A1 (en) | 2012-08-08 |
EP2485013A4 (en) | 2016-08-03 |
CN102549387A (zh) | 2012-07-04 |
EP2485013B1 (en) | 2017-09-13 |
US9000758B2 (en) | 2015-04-07 |
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