JP2008197059A - Rotation detector - Google Patents

Rotation detector Download PDF

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Publication number
JP2008197059A
JP2008197059A JP2007035103A JP2007035103A JP2008197059A JP 2008197059 A JP2008197059 A JP 2008197059A JP 2007035103 A JP2007035103 A JP 2007035103A JP 2007035103 A JP2007035103 A JP 2007035103A JP 2008197059 A JP2008197059 A JP 2008197059A
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Prior art keywords
hub
rotation
magnet
wheel
housing
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JP2007035103A
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Japanese (ja)
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Masaru Iwahashi
優 岩橋
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Priority to JP2007035103A priority Critical patent/JP2008197059A/en
Priority to PCT/JP2008/052015 priority patent/WO2008099749A1/en
Publication of JP2008197059A publication Critical patent/JP2008197059A/en
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    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/02—Housings
    • G01P1/026—Housings for speed measuring devices, e.g. pulse generator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotation detector in which the yield of the rotation detector is not deteriorated without the occurrence of breakage in a constituent component in its attachment work. <P>SOLUTION: The rotation detector A includes: a magnet 3 rotated with the rotation of a hub 2 of a wheel 1, wherein magnetic force variation with the rotation of the magnet 3 is detected by a Hall IC 4; and a housing 6 storing the magnet 3 and the Hall IC 4 and held between the hub 2 and a front fork 5, wherein an insertion-through part 8 which abuts against the hub 2 and through which an axle 7 is inserted is provided to the housing 6, and the magnet 3 is rotatably fixed to the hub 2 at an outer circumference of the insertion-through part 8. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、例えば、ホイールのハブの回転に伴って回転するマグネットを有し、マグネットの回転に伴う磁力変化を磁気検出手段によって検出し、前記マグネットと前記磁気検出手段を収納するとともに前記ハブとフロントフォークとの間に挟持されるハウジングを有する回転検出装置に関する。   The present invention has, for example, a magnet that rotates with the rotation of a hub of a wheel, detects a change in magnetic force associated with the rotation of the magnet by a magnetic detection means, accommodates the magnet and the magnetic detection means, and The present invention relates to a rotation detection device having a housing sandwiched between a front fork.

従来の回転検出装置は、特許文献１に開示されるものが知られている。この回転検出装置は、ホイールのハブの回転に伴って回転するマグネットを有し、前記マグネットの回転に伴う磁力変化を磁気検出手段によって検出し、前記ハブとフロントフォークとの間に挟持されるハウジングを有するものである。その具体的構成としては、車軸が挿通する挿通部を備えるとともに車軸に装着されるハウジングと、車軸に装着される車輪に同期して回転するよう挿通部が挿通するマグネットと、このマグネットの磁極変化を検出するホールＩＣとを備え、前記ハウジングには、前記挿通部の周縁に形成され前記マグネットを収納する第１の収納部と、前記ホールＩＣを前記マグネットに近接するように配設する第２の収納部とを形成してなるものである。
特開平９-２２９７１４号公報 As a conventional rotation detection device, one disclosed in Patent Document 1 is known. This rotation detection device has a magnet that rotates with the rotation of the hub of the wheel, detects a change in magnetic force accompanying the rotation of the magnet by a magnetic detection means, and is sandwiched between the hub and the front fork. It is what has. The specific configuration includes an insertion portion through which the axle is inserted and a housing that is attached to the axle, a magnet through which the insertion portion is inserted so as to rotate in synchronization with a wheel that is attached to the axle, and a magnetic pole change of the magnet And a first storage part that is formed at the periphery of the insertion part to store the magnet, and the Hall IC is disposed so as to be close to the magnet. The storage part is formed.
JP-A-9-229714

しかしながら、このような回転検出装置は、前記挿通部に装着された前記マグネットに備えられる回転伝達片を前記ホイールのハブに設けられた凸部の側面に噛み合うように配設するものであるが、回転検出装置のハブへの取付作業が取り付け位置を目視で確認できない作業であることから、回転伝達片が凸部に乗り上げた状態を確認できずに回転検出装置が前記フロントフォークと前記ホイールとの間に共締めされると、前記回転伝達片に破損が生じてしまい、破損が生じたマグネットを交換することになるため回転検出装置の歩留まりを低下させてしまうといった問題を有している。   However, such a rotation detection device is arranged so that the rotation transmission piece provided in the magnet mounted on the insertion portion meshes with the side surface of the convex portion provided on the hub of the wheel. Since the mounting operation of the rotation detecting device to the hub is an operation in which the mounting position cannot be visually confirmed, the rotation detecting device cannot check the state where the rotation transmitting piece rides on the convex portion, and the rotation detecting device is connected to the front fork and the wheel. If they are fastened together, the rotation transmission piece will be damaged, and the damaged magnet will be replaced, which reduces the yield of the rotation detector.

そこで、本発明は前述した問題点に着目し、取付作業において構成部品に破損の発生がなく、回転検出装置の歩留まりを低下させることがない回転検出装置を提供することを目的とする。   Therefore, the present invention pays attention to the above-described problems, and an object thereof is to provide a rotation detection device in which components are not damaged during the mounting operation and the yield of the rotation detection device is not reduced.

本発明は、ホイールのハブの回転に伴って回転する被検出体を有し、前記被検出体の回転に伴う磁力変化を磁気検出手段によって検出し、前記被検出体と前記磁気検出手段を収納するとともに前記ハブとフロントフォークとの間に挟持されるハウジングを有する回転検出装置であって、前記ハブに当接するとともに車軸が挿通する挿通部を前記ハウジングに設け、前記被検出体を前記挿通部の外周に位置するように前記ハブに固定したものである。   The present invention has a detected body that rotates as the wheel hub rotates, detects a change in magnetic force accompanying the rotation of the detected body by a magnetic detection means, and stores the detected body and the magnetic detection means. And a rotation detecting device having a housing sandwiched between the hub and the front fork, wherein the housing is provided with an insertion portion that contacts the hub and through which an axle is inserted, and the detected object is inserted into the insertion portion. It is fixed to the hub so as to be located on the outer periphery of.

また、本発明は、前記被検出体は、前記ハブに固定するための固定部を備えてなるものである。   In the present invention, the detected object includes a fixing portion for fixing to the hub.

また、本発明は、前記固定部は、前記ハブに圧入によって固定されるものである。   In the present invention, the fixing portion is fixed to the hub by press-fitting.

また、本発明は、前記固定部は、前記ハブに螺着によって固定されるものである。   According to the present invention, the fixing portion is fixed to the hub by screwing.

本発明によれば、所期の目的を達成でき、取付作業において構成部品に破損の発生がなく、回転検出装置の歩留まりを低下させることがない回転検出装置を提供することができる。   According to the present invention, it is possible to provide a rotation detection device that can achieve the intended purpose, does not cause damage to the components in the mounting operation, and does not reduce the yield of the rotation detection device.

以下、添付図面に基づいて本発明の実施形態を説明する。図１、図２は、本発明の第１実施形態を示すものである。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 and 2 show a first embodiment of the present invention.

本実施形態の回転検出装置Ａは、ホイール１のハブ２の回転に伴って回転する被検出体３と、この被検出体３の回転に伴う磁力変化を検出する磁気検出手段４と、被検出体３と磁気検出手段４を収納するとともにハブ２とフロントフォーク５との間に挟持されるハウジング６とから主に構成されている。なお、７は金属からなる車軸であり、ホイール１を支持するものであり、１１はナットであり、車軸７に設けた雄ねじ部７ａに固定されるものである。   The rotation detection device A of the present embodiment includes a detection object 3 that rotates as the hub 2 of the wheel 1 rotates, a magnetic detection means 4 that detects a change in magnetic force accompanying the rotation of the detection object 3, and a detection target. The main body 3 and the magnetic detection means 4 are housed, and the housing 6 is mainly composed of the hub 2 and the front fork 5. Reference numeral 7 denotes an axle made of metal, which supports the wheel 1, and 11 denotes a nut, which is fixed to a male screw portion 7a provided on the axle 7.

ホイール１はアルミニウムなどの金属からなり、本実施形態では、ホイール１は前輪用である。ホイール１は、図示しないタイヤを保持するものである。   The wheel 1 is made of a metal such as aluminum. In the present embodiment, the wheel 1 is for a front wheel. The wheel 1 holds a tire (not shown).

ハブ２はホイール１の回転中心部分であり、ホイール１とともに一体に形成されている。ハブ２は円筒形状であり、その内部に軸受９を備えている。本実施形態では、軸受９はボールベアリングを用いている。この軸受９はハブ２に、圧入によって固定されている。ハブ２に設けた軸受９内に車軸７を通し、ホイール１を車軸７に支持するものである。なお、１０は、ハブ２内に圧入状態にて固定されたシールなどの封止部材であり、ボールベアリング９内へのゴミなどの侵入を防止するものである。   The hub 2 is a rotation center portion of the wheel 1 and is integrally formed with the wheel 1. The hub 2 has a cylindrical shape and includes a bearing 9 therein. In the present embodiment, the bearing 9 is a ball bearing. This bearing 9 is fixed to the hub 2 by press-fitting. The axle 7 is passed through a bearing 9 provided on the hub 2, and the wheel 1 is supported on the axle 7. Reference numeral 10 denotes a sealing member such as a seal fixed in the hub 2 in a press-fitted state, and prevents dust and the like from entering the ball bearing 9.

被検出体３は環状であり、固定部３ａと被検出部３ｂとで構成されている。固定部３ａは金属からなり、その断面形状はクランク形状である。固定部３ａは、その内周がハブ２の外周に圧入状態で接することによって、ハブ２に固定されている。よって、被検出体３はホイール１のハブ２に装着され、ハブ２の回転に伴って回転する。   The detected body 3 has an annular shape, and includes a fixed portion 3a and a detected portion 3b. The fixed portion 3a is made of metal, and its cross-sectional shape is a crank shape. The fixed portion 3 a is fixed to the hub 2 by the inner periphery thereof being in press contact with the outer periphery of the hub 2. Therefore, the detected body 3 is mounted on the hub 2 of the wheel 1 and rotates as the hub 2 rotates.

被検出部３ｂは、磁性を有する部材であり、例えば、磁性を有する合成樹脂からなるマグネット３ｂである。マグネット３ｂは、固定部３ａとともにインサート成形などによって形成される。   The detected part 3b is a member having magnetism, for example, a magnet 3b made of a synthetic resin having magnetism. The magnet 3b is formed by insert molding or the like together with the fixed portion 3a.

磁気検出手段４は、本実施形態ではホールＩＣであり、被検出体３の回転に伴うマグネット３ｂ磁力変化を検出する。そして、この磁力変化を前輪のホイールの回転数、すなわち、車速信号として出力するものである。磁気検出手段４は、ホールＩＣに限定されるものではなく、磁力の変化を検出することが可能であれば、どのような磁気検出手段を用いてもよい。   The magnetic detection means 4 is a Hall IC in this embodiment, and detects a change in magnetic force of the magnet 3b accompanying the rotation of the detected body 3. And this magnetic force change is output as the rotation speed of the wheel of a front wheel, ie, a vehicle speed signal. The magnetic detection means 4 is not limited to the Hall IC, and any magnetic detection means may be used as long as it can detect a change in magnetic force.

フロントフォーク５は、車軸７を支持するものである。   The front fork 5 supports the axle 7.

ハウジング６は、カップ形状の主要部６ａと、主要部６ａの中央部分に挿通部８を備えている。主要部６ａは合成樹脂からなり、挿通部８は金属から形成されている。主要部６ａと挿通部８はインサート成形によって、一体に形成されている。挿通部８は円筒形であり、その円筒内に車軸７が挿通するものであり、ハウジング６の軸受けを果たしている。   The housing 6 includes a cup-shaped main portion 6a and an insertion portion 8 in the central portion of the main portion 6a. The main part 6a is made of synthetic resin, and the insertion part 8 is made of metal. The main part 6a and the insertion part 8 are integrally formed by insert molding. The insertion portion 8 has a cylindrical shape, and the axle 7 is inserted into the cylinder, and serves as a bearing for the housing 6.

ハウジング６は、ハブ２とフロントフォーク５との間に挟持される。特に、ハウジング６の挿通部８がハブ２とフロントフォーク５とに当接している。   The housing 6 is sandwiched between the hub 2 and the front fork 5. In particular, the insertion portion 8 of the housing 6 is in contact with the hub 2 and the front fork 5.

ハウジング６の主要部６ａと挿通部８とで形成される空間に、被検出体３とハブ２の一部が位置しており、被検出体３が収納されている。そして、ハブ２に固定された被検出体３は、挿通部８の外周で、かつハウジング６の主要部６ａ内に位置している。そして、被検出体３は、ハブ２とともに回転するものである。   In the space formed by the main portion 6a of the housing 6 and the insertion portion 8, the detected body 3 and a part of the hub 2 are located, and the detected body 3 is accommodated. The detected body 3 fixed to the hub 2 is located on the outer periphery of the insertion portion 8 and in the main portion 6 a of the housing 6. And the to-be-detected body 3 rotates with the hub 2.

また、主要部６ａには、ホールＩＣ４を収納する収納部６ｂが設けられている。この収納部６ｂ内には、ホールＩＣ４を実装した回路基板４ａが収納されている。なお、４ｂは、ホールＩＣ４で発生した信号を外部に出力する配線である。４ｃは、収納部６ｂ内に充填された合成樹脂であり、ホールＩＣ４や回路基板４ａなどを保護するものである。   The main portion 6a is provided with a storage portion 6b for storing the Hall IC 4. A circuit board 4a on which the Hall IC 4 is mounted is stored in the storage portion 6b. Reference numeral 4b denotes a wiring for outputting a signal generated in the Hall IC 4 to the outside. 4c is a synthetic resin filled in the storage portion 6b and protects the Hall IC 4 and the circuit board 4a.

以上の構成によって、ハウジング６を取り付ける前に、予めハブ２に被検出体３を固定する構成であるため、回転検出装置Ａの取付作業において構成部品に破損の発生がなく、回転検出装置Ａの歩留まりを低下させることがない回転検出装置Ａを得ることができる。   With the above configuration, since the detection object 3 is fixed to the hub 2 in advance before the housing 6 is attached, there is no occurrence of damage to the component parts in the mounting operation of the rotation detection device A, and the rotation detection device A The rotation detection device A that does not reduce the yield can be obtained.

また、被検出体３にハブ２に固定するための固定部３ａを設けたことによって、被検出体３の被検出部であるマグネット３ｂを確実にハブ２に固定させることができるため、被検出体３を脱落させることなく、回転検出装置Ａを容易に組み付けることができる。   Further, by providing the fixing body 3a for fixing the detected body 3 to the hub 2, the magnet 3b, which is the detected section of the detected body 3, can be reliably fixed to the hub 2. The rotation detection device A can be easily assembled without dropping the body 3.

また、固定部３ａを、ハブ２に圧入によって固定したことによって、被検出体３が確実にハブ２と同期して回転することができる。また、被検出体３とハブ２とのガタつきによる誤パルスの発生を抑制することができる回転検出装置Ａを提供することができる。   In addition, by fixing the fixing portion 3 a to the hub 2 by press-fitting, the detection object 3 can reliably rotate in synchronization with the hub 2. In addition, it is possible to provide the rotation detection device A that can suppress the generation of erroneous pulses due to rattling between the detection object 3 and the hub 2.

なお、前記実施形態においては、固定部３ａは、ハブ２に圧入によって固定されるものであったが、前記実施形態に限定されるものではなく、被検出体３が確実にハブ２と同期して回転することができ、被検出体３とハブ２とのガタつきによる誤パルスの発生を抑制することができるものであれば、固定部３ａの内周とハブ２の外周に、それぞれねじ山を形成し、固定部３ａとハブ２とを螺着によって固定するものであってもよい。   In the above-described embodiment, the fixing portion 3a is fixed to the hub 2 by press-fitting. However, the fixing portion 3a is not limited to the above-described embodiment, and the detection target 3 is reliably synchronized with the hub 2. Can be rotated, and the occurrence of erroneous pulses due to rattling between the detection object 3 and the hub 2 can be suppressed by screw threads on the inner periphery of the fixing portion 3a and the outer periphery of the hub 2, respectively. And the fixing portion 3a and the hub 2 may be fixed by screwing.

本発明の第１実施形態の回転検出装置の断面図。Sectional drawing of the rotation detection apparatus of 1st Embodiment of this invention. 同実施形態の回転体の断面図。Sectional drawing of the rotary body of the embodiment.

符号の説明Explanation of symbols

Ａ 回転検出装置
１ ホイール
２ ハブ
３ 被検出体
３ａ 固定部
３ｂ 被検出部（マグネット）
４ ホールＩＣ（磁気検出手段）
５ フロントフォーク
６ ハウジング
７ 車軸
８ 挿通部 A Rotation detection device 1 Wheel 2 Hub 3 Detected object 3a Fixed part 3b Detected part (magnet)
4 Hall IC (magnetic detection means)
5 Front fork 6 Housing 7 Axle 8 Insertion part

Claims (4)

ホイールのハブの回転に伴って回転する被検出体を有し、前記被検出体の回転に伴う磁力変化を磁気検出手段によって検出し、前記被検出体と前記磁気検出手段を収納するとともに前記ハブとフロントフォークとの間に挟持されるハウジングを有する回転検出装置であって、前記ハブに当接するとともに車軸が挿通する挿通部を前記ハウジングに設け、前記被検出体を前記挿通部の外周に位置するように前記ハブに固定したことを特徴とする回転検出装置。 A detected object that rotates with the rotation of the hub of the wheel; a magnetic force change associated with the rotation of the detected object is detected by a magnetic detection means; and the detected object and the magnetic detection means are housed and the hub A rotation detection device having a housing sandwiched between a front fork and a front fork, wherein the housing is provided with an insertion portion that abuts the hub and through which an axle is inserted, and the detected body is positioned on an outer periphery of the insertion portion. A rotation detecting device fixed to the hub as described above. 前記被検出体は、前記ハブに固定するための固定部を備えてなることを特徴とする請求項１に記載の回転検出装置。 The rotation detection apparatus according to claim 1, wherein the detection object includes a fixing portion for fixing to the hub. 前記固定部は、前記ハブに圧入によって固定されるものであることを特徴とする請求項２に記載の回転検出装置。 The rotation detection device according to claim 2, wherein the fixing portion is fixed to the hub by press-fitting. 前記固定部は、前記ハブに螺着によって固定されるものであることを特徴とする請求項２に記載の回転検出装置。 The rotation detecting device according to claim 2, wherein the fixing portion is fixed to the hub by screwing.
JP2007035103A 2007-02-15 2007-02-15 Rotation detector Pending JP2008197059A (en)

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JP2007035103A JP2008197059A (en) 2007-02-15 2007-02-15 Rotation detector
PCT/JP2008/052015 WO2008099749A1 (en) 2007-02-15 2008-02-07 Rotation detector

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JP2007035103A JP2008197059A (en) 2007-02-15 2007-02-15 Rotation detector

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JP2008197059A true JP2008197059A (en) 2008-08-28

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JP2007035103A Pending JP2008197059A (en) 2007-02-15 2007-02-15 Rotation detector

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011173588A (en) * 2010-02-24 2011-09-08 Guangyang Ind Co Ltd Speed sensor assembly
JP2013007731A (en) * 2011-05-20 2013-01-10 Asmo Co Ltd Motor and motor for electrically-driven power steering

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8327965B2 (en) * 2008-11-17 2012-12-11 Aktiebolaget Skf Instrumented rolling bearing device, particularly for a motorcycle wheel
DE102013219017A1 (en) * 2012-12-20 2014-06-26 Continental Teves Ag & Co. Ohg Sensor for outputting an electrical signal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5812863U (en) * 1981-07-15 1983-01-27 株式会社シマノ Bicycle wheel rotation speed detection device
JP2004328845A (en) * 2003-04-22 2004-11-18 Toyota Industries Corp Rotation detection structure
JP2006105341A (en) * 2004-10-08 2006-04-20 Ntn Corp Bearing for wheel integrated with speed sensor exclusively used for motorcycle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011173588A (en) * 2010-02-24 2011-09-08 Guangyang Ind Co Ltd Speed sensor assembly
JP2013007731A (en) * 2011-05-20 2013-01-10 Asmo Co Ltd Motor and motor for electrically-driven power steering

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