JP3906834B2 - Rotation detector - Google Patents

Rotation detector Download PDF

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JP3906834B2
JP3906834B2 JP2003358186A JP2003358186A JP3906834B2 JP 3906834 B2 JP3906834 B2 JP 3906834B2 JP 2003358186 A JP2003358186 A JP 2003358186A JP 2003358186 A JP2003358186 A JP 2003358186A JP 3906834 B2 JP3906834 B2 JP 3906834B2
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rotation
hub
wheel
housing
disposed
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JP2005121537A (en
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裕司 小黒
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Description

本発明は、例えばオートバイまたは自転車等の二輪車用の車輪の回転を検出し、この検出した信号をスピードメータ等へ伝達する電気式の回転検出装置に関するものである。   The present invention relates to an electric rotation detection device that detects rotation of a wheel for a motorcycle such as a motorcycle or a bicycle, and transmits the detected signal to a speedometer or the like.

従来の回転検出装置としては、特許文献1に開示されるものがあり、この回転検出装置は、被検出体を検出するための検出面を有する略円筒形状の樹脂ケースに、回路基板に実装したホールIC等からなる磁気検出素子と、マグネットとが、前記検出面に沿うように配設され、前記回路基板及び前記磁気検出素子,前記マグネットをエポキシ等からなる封止部材により封止する構造が採用されている。この回転検出装置を、二輪車用(例えば、オートバイ)の回転検出装置として用いる場合は、回転検出装置を車両のミッションケースやスプロケットカバー等に取り付け、その内部で回転するミッションギアやスプロケット等を被検出体として検出することが一般的である。   As a conventional rotation detection device, there is one disclosed in Patent Document 1, and this rotation detection device is mounted on a circuit board in a substantially cylindrical resin case having a detection surface for detecting an object to be detected. A magnetic detection element made of a Hall IC or the like and a magnet are arranged along the detection surface, and the circuit board, the magnetic detection element, and the magnet are sealed with a sealing member made of epoxy or the like. It has been adopted. When this rotation detection device is used as a rotation detection device for a motorcycle (for example, a motorcycle), the rotation detection device is attached to a vehicle mission case, a sprocket cover, etc., and a transmission gear, a sprocket, etc. rotating inside it are detected. It is common to detect as a body.

このような回転検出装置を用いて、ミッションギアやスプロケット等を被検出体として検出する場合、前記被検出体には多少のクリアランスが存在するため、二輪車のボディ剛性や排気量等から前記被検出体に振動が生じ、前記被検出体と前記回転検出装置との検出位置ギャップが変動してしまうことから、前記回転検出装置に磁気の変化が生じ検出ノイズとなり、この回転検出装置から出力される出力データに応じて、例えばスピード表示する指示計器の誤動作の原因につながるといった問題点を有していた。この問題点に着目し、本願出願人は、特許文献2に開示される回転検出装置を提案している。    When such a rotation detection device is used to detect a transmission gear, sprocket, or the like as a detected object, since the detected object has some clearance, the detected object is determined based on the body rigidity or displacement of a motorcycle. Since vibration occurs in the body and the detection position gap between the detected object and the rotation detection device fluctuates, a magnetic change occurs in the rotation detection device, resulting in detection noise, which is output from the rotation detection device. Depending on the output data, for example, there is a problem that it may cause a malfunction of the indicating instrument that displays the speed. Focusing on this problem, the present applicant has proposed a rotation detection device disclosed in Patent Document 2.

この回転検出装置は、オートバイ等の二輪車における前輪ホイールに装着されるものであり、前記前輪ホイールが装着される車軸が挿通する挿通部を備えたハウジングを備え、前記挿通部に、前記前輪ホイールとともに回転するとともに複数の磁極を有するプラスチックマグネット等の磁性媒体から構成される被検出体を装着し、前記被検出体の回転による前記磁極の変化をホールIC等からなる磁気検出素子によって検出する構造である。   This rotation detection device is attached to a front wheel wheel in a motorcycle such as a motorcycle, and includes a housing having an insertion portion through which an axle to which the front wheel wheel is attached is inserted, together with the front wheel in the insertion portion. A structure in which a detection object composed of a magnetic medium such as a plastic magnet that rotates and has a plurality of magnetic poles is mounted, and a change in the magnetic poles due to the rotation of the detection object is detected by a magnetic detection element such as a Hall IC. is there.

前記被検出体は、前記磁極を有する円筒部と、前記前輪ホイールの回転を前記円筒部に伝達するための回転伝達片とがプラスチックマグネット等によって一体に形成されてなるものである。前記回転伝達片は、前記前輪ホイールのハブに設けられる凹部形状の取付部に対応するように、前記ハウジングの開口部側の前記円筒部から外方に引き出し形成されてなるもので、前記円筒部周縁の複数箇所に設けられるものである。   The object to be detected is formed by integrally forming a cylindrical portion having the magnetic pole and a rotation transmitting piece for transmitting rotation of the front wheel to the cylindrical portion by a plastic magnet or the like. The rotation transmission piece is formed to be drawn outward from the cylindrical portion on the opening side of the housing so as to correspond to a concave-shaped mounting portion provided on the hub of the front wheel. It is provided at a plurality of locations on the periphery.

かかる構成の回転検出装置は、前記前輪ホイールとフロントホークとの間に狭持された状態で配設されるものである。即ち前記回転検出装置は、前記前輪ホイールが装着されている前記車軸を前記挿通部に挿通し、前記前輪ホイールの前記ハブに設けられる前記取付部に前記回転伝達片を嵌め込むとともに、前記挿通部から前記ハウジングの外方に向かって突出する前記車軸をフロントホークを介してナット部材によって固定することで、前記前輪ホイールと前記フロントホイールとの間において狭持される状態で配設される。
特開平2−264817号公報 特開平9−229714号公報
The rotation detection device having such a configuration is arranged in a state of being sandwiched between the front wheel and the front fork. That is, the rotation detection device inserts the axle on which the front wheel is mounted into the insertion portion, and inserts the rotation transmission piece into the attachment portion provided on the hub of the front wheel, and the insertion portion The axle projecting outward from the housing is fixed by a nut member via a front fork so as to be sandwiched between the front wheel and the front wheel.
JP-A-2-264817 JP-A-9-229714

かかる回転検出装置を前記ハブに取り付ける製造工程において、前記ハブの前記取付部に前記回転検出装置の前記回転伝達片を嵌め込む際に、前記回転伝達片が前記取付部に嵌ったか否かを目視によって確認することは困難である。従って前記回転伝達片が前記取付部に嵌め込まれない状態で前記回転検出装置が前記ハブとフロントホークとの間において共締めされると、前記プラスチックマグネットにより構成される前記回転伝達片の破損が発生する恐れがあるといった問題点を有していた。   In the manufacturing process of attaching the rotation detection device to the hub, when the rotation transmission piece of the rotation detection device is fitted to the attachment portion of the hub, it is visually checked whether the rotation transmission piece is fitted to the attachment portion. It is difficult to confirm by. Therefore, if the rotation detecting device is fastened between the hub and the front fork in a state where the rotation transmitting piece is not fitted into the mounting portion, the rotation transmitting piece constituted by the plastic magnet is damaged. There was a problem that there was a fear of doing.

本発明は前記問題点に着目し、回転検出装置がホイールに不適正な状態で配設される場合であっても、前記回転検出装置の構成部品を破損させることなく、ホイールにおけるハブに適正な状態で組み付け可能な回転検出装置を提供するものである。   The present invention pays attention to the above-mentioned problems, and even when the rotation detection device is disposed in an inappropriate state on the wheel, it is suitable for the hub in the wheel without damaging the components of the rotation detection device. A rotation detection device that can be assembled in a state is provided.

本発明は、前述した課題を解決するため、二輪車のホイールが装着される車軸が挿通する挿通部を有するハウジングと、前記挿通部の外周に対して回転自在に配設されるとともに前記ホイールのハブに配設され前記ホイールとともに回転する被検出体と、前記被検出体の回転を検出する磁気検出手段と、前記ハウジングに装着され前記ハブの内壁に当接するとともに前記ハウジングの壁部にその内周が接し前記ハウジングを気密的に前記ハブに配設する弾性を有するシール部材と、を備え、前記ホイールとフロントホークとの間に狭持された状態で配設される回転検出装置であって、前記被検出体は、前記磁気検出手段によって回転を検出するための複数の磁極を周縁に備え前記挿通部が挿通する円筒状の検出部と、前記ホイールのハブに形成される取付部に嵌め込まれる片部を有し前記ホイールの回転を前記検出部に伝達する弾性部材からなる回転伝達部とを備え、前記回転伝達部の片部が前記取付部に配設されず前記ハブに撓んで乗り上げた不適正な状態であると前記シール部材に当接する突出部を前記ハウジング方向に突出するように前記片部の端部に設けたものである。 In order to solve the above-described problems, the present invention provides a housing having an insertion portion through which an axle on which a wheel of a two-wheel vehicle is mounted is inserted, a hub of the wheel that is rotatably disposed with respect to the outer periphery of the insertion portion. And a magnetic detection means for detecting the rotation of the detected object; and abutting against the inner wall of the hub and being attached to the inner wall of the housing. A rotation detecting device disposed in a state of being sandwiched between the wheel and the front fork, and a sealing member having elasticity that arranges the housing on the hub in an airtight manner, The object to be detected has a plurality of magnetic poles for detecting rotation by the magnetic detection means at the periphery, and is formed in a cylindrical detection part through which the insertion part is inserted, and a hub of the wheel. And a rotation transmission portion made of an elastic member that transmits the rotation of the wheel to the detection portion, and the rotation transmission portion is not disposed on the attachment portion. wherein at the protrusion abut on the seal member to be not appropriate for rides deflect hub that provided at the end of the piece so as to protrude into the housing direction.

本発明は、二輪車のホイールが装着される車軸が挿通する挿通部を有するハウジングと、前記挿通部の外周に対して回転自在に配設されるとともに前記ホイールのハブに配設され前記ホイールとともに回転する被検出体と、前記被検出体の回転を検出する磁気検出手段と、前記ハウジングに装着され前記ハブの内壁に当接するとともに前記ハウジングの壁部にその内周が接し前記ハウジングを気密的に前記ハブに配設する弾性を有するシール部材と、を備え、前記ホイールとフロントホークとの間に狭持された状態で配設される回転検出装置に関し、回転検出装置が前記ホイールにおける前記ハブに不適正な状態で配設される場合であっても、回転検出装置の構成部品を破損させることなく、適正な状態に復帰可能な回転検出装置を提供するものである。
The present invention is rotated, a housing having an insertion portion which axle is inserted to motorcycle wheel is mounted, said rotatably arranged with respect to the outer periphery of the insertion part is disposed on the hub of Rutotomoni the wheel together with the wheel And a magnetic detection means for detecting the rotation of the detected object, and abutting against the inner wall of the hub mounted on the housing and contacting the inner wall of the housing so that the housing is hermetically sealed and a sealing member having elasticity to be arranged in the hub, relates the rotation detection device that will be disposed in a sandwiched state between the wheel and the front fork, the hub rotation detecting device in the wheel Provided is a rotation detection device capable of returning to an appropriate state without damaging the components of the rotation detection device even when disposed in an inappropriate state. Than is.

以下、オートバイのホイールの回転数を検出する回転検出装置を例に上げ、添付図面に基づいて、本発明の実施の形態を説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings, taking a rotation detection device for detecting the rotation speed of a motorcycle wheel as an example.

図1及び図2において、本発明の第一の実施の形態である回転検出装置Aは、樹脂材料からなるハウジング1と、図示しない所定の配線パターンが施された回路基板2と、磁気検出素子(磁気検出手段)3と、ゴム製材料からなるシール部材4と、被検出体5とから構成されている。   1 and 2, a rotation detection device A according to a first embodiment of the present invention includes a housing 1 made of a resin material, a circuit board 2 provided with a predetermined wiring pattern (not shown), and a magnetic detection element. (Magnetic detection means) 3, a seal member 4 made of a rubber material, and a detection object 5.

ハウジング1は、ポリブチレンテレフタレートやナイロン等の樹脂材料からなり、このハウジング1の略中央には、車軸Sが挿通し、金属材料からなる円筒状の挿通部1aがインサート成形されている。この挿通部1aの周囲には、後で詳述する被検出体5が挿通部1aの外周に対し回転自在に配設するための第一の収納部1bが形成され、この第一の収納部1bの外方には、回路基板2と回路基板2に実装した磁気検出素子3とを収納する第二の収納部1cが形成されている。また、ハウジング1の外周(第一の収納部1bの周縁)には、周縁部1dが備えられ、周縁部1dには前輪ホイール10方向に延出する壁部1eが形成されている。   The housing 1 is made of a resin material such as polybutylene terephthalate or nylon, and an axle S is inserted in the approximate center of the housing 1 and a cylindrical insertion portion 1a made of a metal material is insert-molded. Around the insertion portion 1a, a first storage portion 1b is formed for the object 5 to be detected, which will be described in detail later, to be rotatably arranged with respect to the outer periphery of the insertion portion 1a. A second storage portion 1c that stores the circuit board 2 and the magnetic detection element 3 mounted on the circuit board 2 is formed outside 1b. Further, the outer periphery of the housing 1 (periphery of the first storage portion 1b) is provided with a peripheral portion 1d, and a wall portion 1e extending in the direction of the front wheel 10 is formed on the peripheral portion 1d.

回路基板2は、ガラスエポキシ等の絶縁材料からなる基板に所定の配線パターンが形成されており、磁気検出素子3及びコンデンサ等からなる図示しない電子部品等が半田等により電気的に固定されている。また、この回路基板2は、磁気検出素子3への電源供給及び磁気検出素子3からの出力信号を図示しない指示計器(例えば、スピードメータ)に伝達するための配線コード(図示しない)が備えられ、この配線コードは回路基板2の所定箇所に半田により電気的に接続されている。かかる回路基板2は、第二の収納部1c内に配設した後、この第二の収納部1c内にエポキシ樹脂等からなる封止部材6を充填することで配設固定される。   The circuit board 2 has a predetermined wiring pattern formed on a substrate made of an insulating material such as glass epoxy, and an electronic component (not shown) made of a magnetic detection element 3 and a capacitor is electrically fixed by solder or the like. . Further, the circuit board 2 is provided with a wiring cord (not shown) for supplying power to the magnetic detection element 3 and transmitting an output signal from the magnetic detection element 3 to an indicator (not shown) (for example, a speedometer). The wiring cord is electrically connected to a predetermined portion of the circuit board 2 by soldering. The circuit board 2 is disposed and fixed by filling the second housing portion 1c with a sealing member 6 made of epoxy resin or the like after being disposed in the second housing portion 1c.

磁気検出素子3は、リードスイッチやホールIC,MR素子(半導体磁気抵抗素子)等からなるもので、被検出体5の磁極の変化を検出する。   The magnetic detection element 3 includes a reed switch, a Hall IC, an MR element (semiconductor magnetoresistive element), and the like, and detects a change in the magnetic pole of the detected object 5.

シール部材4は、ニトリルやシリコン系等のゴム製材料からなるもので、このシール部材4は薄型の円筒形状からなるものである。シール部材4の側端面には、断面形状が略V字形状からなり、前輪ホイール10のハブ10aの内壁に当接して回転検出装置Aのハウジング1を気密的にハブ10aに配設するための当接部4aと、この当接部4aから上方に向かって延長された立設部4bとが形成されている。そして、この立設部4bの内側には断面形状が略L字形状の金属材料からなる保持部材4cがインサート成形されている。シール部材4の立設部4bは、内周がハウジング1の壁部1eの外径に対しやや径小となるように形成されることから、シール部材4は、立設部4bの上端部がハウジング1のフランジ部1fに当接するように圧入により配設固定されている。 The seal member 4 is made of a rubber material such as nitrile or silicon, and the seal member 4 has a thin cylindrical shape. The side end surface of the seal member 4 has a substantially V-shaped cross section, and abuts against the inner wall of the hub 10a of the front wheel 10 so that the housing 1 of the rotation detection device A is airtightly disposed on the hub 10a. A contact portion 4a and a standing portion 4b extending upward from the contact portion 4a are formed. A holding member 4c made of a metal material having a substantially L-shaped cross section is insert-molded inside the standing portion 4b. Since the standing portion 4b of the seal member 4 is formed so that the inner circumference is slightly smaller than the outer diameter of the wall portion 1e of the housing 1, the seal member 4 has an upper end portion of the standing portion 4b. The housing 1 is disposed and fixed by press-fitting so as to contact the flange portion 1 f of the housing 1.

被検出体5は、磁気検出素子3によって回転を検出するための円筒部(検出部)5aと前輪ホイール10の回転を円筒部5aに伝達する回転伝達部5bとがインサート成型によって一体的に形成されてなるものであり、ハウジングの挿通部1aが挿通される。円筒部5aは、例えば、プラスチックマグネットからなり、表面に例えば、8極の着磁がなされるものである。回転伝達部5bは、例えば、ナイロン,ポリアセタールあるいはポリイアミド等の樹脂系材料やバネ材料綱あるいはSPC圧延綱等の金属系材料からなる弾性部材から構成され、前輪ホイール10のハブ10aに形成される取付部10bに嵌め込まれる複数の片部5cを有するものである。また、回転伝達部5bは、片部5cのハブ10aとの非当接面側に形成され、シール部材4と対向する突出部5dを備える。図2に示すように、被検出体5が不適正な状態でハブ10aに配設された場合に、突出部5eはシール部材4と当接するものである。ここでいう「不適正な状態」とは、回転伝達部5bが前輪ホイール10の回転を受けるための適正な位置に配設されない状態をいい、本発明の第一の実施の形態においては、片部5cがハブ10aに形成される取付部10bに配設されず、ハブ10aに撓んで乗り上げた状態をいう。   In the detection object 5, a cylindrical part (detection part) 5a for detecting rotation by the magnetic detection element 3 and a rotation transmission part 5b for transmitting the rotation of the front wheel 10 to the cylindrical part 5a are integrally formed by insert molding. Thus, the insertion portion 1a of the housing is inserted. The cylindrical portion 5a is made of, for example, a plastic magnet, and the surface thereof is magnetized with, for example, 8 poles. The rotation transmission portion 5b is made of an elastic member made of a resin material such as nylon, polyacetal, or polyamide, or a metal material such as a spring material rope or an SPC rolling rope, and is attached to the hub 10a of the front wheel 10. It has a plurality of pieces 5c fitted into the portion 10b. Further, the rotation transmitting portion 5b includes a protruding portion 5d that is formed on the non-contact surface side of the piece portion 5c with the hub 10a and faces the seal member 4. As shown in FIG. 2, the protrusion 5 e comes into contact with the seal member 4 when the detected object 5 is disposed on the hub 10 a in an inappropriate state. The “inappropriate state” here refers to a state in which the rotation transmitting portion 5b is not disposed at an appropriate position for receiving the rotation of the front wheel 10, and in the first embodiment of the present invention, The part 5c is not disposed on the mounting part 10b formed on the hub 10a, but refers to a state where the part 5c is bent on the hub 10a.

以上の各部により回転検出装置Aが構成される。   The rotation detecting device A is configured by the above-described units.

回転検出装置Aを製造工程において二輪車へ取り付ける際に、被検出体5が前記不適正な状態でハブ10aに配設され、さらに回転検出装置Aがフロントホーク(図示しない)と前輪ホイール10との間で締め付けられると、片部5cが撓み、突出部5dはシール部材によって押圧された状態となる。前記不適正な状態で、前輪ホイール10が回転すると、ハブ10aと片部5cとの接点(以下、第一接点と言う)P1と、突出部5dとシール部材との接点(以下、第二接点という)P2とに前輪ホイール10の回転に対抗する摩擦力が生じる。このとき、突出部5dがシール部材4によって押圧された状態であることあるいは、第一接点P1と第二接点P2との部材料の違い等から、第二接点P2に生じる摩擦力は、第一接点P1に生じる摩擦力よりも大きくなり、被検出体5は前記不適正な状態のまま前輪ホイール10とともに回転することはなく、前輪ホイール10のみが回転する。そのため、前輪ホイール10が一回転する間にハブ10aの取付部10bが片部5cの位置に対応する状態となり、片部5cが取付部10bに嵌め込まれる。すなわち、前輪ホイール10が一回転する間に、被検出体5の片部5cが適正な状態にてハブ10aに配設することになる。したがって、かかる回転検出装置Aは、被検出体5が前記不適正な状態で配設される場合であっても、被検出体5を破損することなく前記適正な状態で配設されることが可能であり、従来の回転検出装置のように被検出体5を交換したり(構成部品の交換)、回転検出装置Aそのものを交換するといったことがなくなり、製造工程における回転検出装置Aの歩留まりを向上させることが可能となる。   When the rotation detection device A is attached to the two-wheeled vehicle in the manufacturing process, the detected object 5 is disposed on the hub 10a in the inappropriate state, and the rotation detection device A further includes a front fork (not shown) and the front wheel 10. When tightened between them, the piece 5c is bent, and the protrusion 5d is pressed by the seal member. When the front wheel 10 rotates in the improper state, the contact (hereinafter referred to as the first contact) P1 between the hub 10a and the piece 5c, the contact between the protrusion 5d and the seal member (hereinafter referred to as the second contact). A frictional force that opposes the rotation of the front wheel 10 occurs at P2. At this time, the frictional force generated at the second contact P2 is caused by the fact that the protruding portion 5d is pressed by the seal member 4 or the difference in material between the first contact P1 and the second contact P2. The friction force generated at the contact point P1 is larger, and the detected object 5 does not rotate with the front wheel 10 in the inappropriate state, and only the front wheel 10 rotates. Therefore, the mounting portion 10b of the hub 10a is in a state corresponding to the position of the piece portion 5c while the front wheel 10 rotates once, and the piece portion 5c is fitted into the mounting portion 10b. That is, while the front wheel 10 makes one rotation, the piece 5c of the detected body 5 is disposed on the hub 10a in an appropriate state. Therefore, the rotation detection apparatus A can be disposed in the proper state without damaging the detected body 5 even when the detected body 5 is disposed in the inappropriate state. It is possible to replace the detected object 5 as in the conventional rotation detection device (replacement of components) or the rotation detection device A itself, and the yield of the rotation detection device A in the manufacturing process can be reduced. It becomes possible to improve.

図3及び図4は、本発明の第二の実施の形態を示しており、前記第一の実施の形態と同一もしくは相当個所には同一符号を付してその詳細な説明を省く。   3 and 4 show a second embodiment of the present invention. The same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

図3おいて、本発明の第二の実施の形態である回転検出装置Aは、樹脂材料からなるハウジング11と、図示しない所定の配線パターンが施された回路基板2と、磁気検出素子(磁気検出手段)3と、ゴム製材料からなるシール部材4と、被検出体15と、から構成されている。   In FIG. 3, a rotation detection apparatus A according to a second embodiment of the present invention includes a housing 11 made of a resin material, a circuit board 2 on which a predetermined wiring pattern (not shown) is provided, and a magnetic detection element (magnetic (Detection means) 3, a seal member 4 made of a rubber material, and a detection target 15.

ハウジング11は、ポリブチレンテレフタレートやナイロン等の樹脂材料からなり、このハウジング11の略中央には、車軸Sが挿通し、金属材料からなる円筒状の挿通部11aがインサート成形されている。この挿通部11aの周囲には、後で詳述する被検出体15が挿通部11aの外周に対し回転自在に配設するための第一の収納部11bが形成され、この第一の収納部11bの外方には、回路基板2と回路基板2に実装した磁気検出素子3とを収納する第二の収納部11cが形成されている。また、ハウジング11の外周(第一の収納部11bの周縁)には、周縁部11dが備えられ、周縁部11dには前輪ホイール10方向に延出する壁部11eが形成されている。また、ハウジング11は、シール部材4の立設部4bの上端部が当接するフランジ部11fを備える。
また、ハウジング11は図4に示すように、壁部11eにおけるハブ10aとの対向箇所からハブ10a方向に突出する突出部11gを備える。
The housing 11 is made of a resin material such as polybutylene terephthalate or nylon, and an axle S is inserted in the approximate center of the housing 11 and a cylindrical insertion portion 11a made of a metal material is insert-molded. Around the insertion portion 11a, there is formed a first storage portion 11b for the object to be detected 15 to be described in detail later to be rotatably arranged with respect to the outer periphery of the insertion portion 11a. A second storage portion 11c that stores the circuit board 2 and the magnetic detection element 3 mounted on the circuit board 2 is formed outside the 11b. Further, a peripheral portion 11d is provided on the outer periphery of the housing 11 (periphery of the first storage portion 11b), and a wall portion 11e extending in the direction of the front wheel 10 is formed on the peripheral portion 11d. Further, the housing 11 includes a flange portion 11f with which the upper end portion of the standing portion 4b of the seal member 4 abuts.
Moreover, the housing 11 is provided with the protrusion part 11g which protrudes in the hub 10a direction from the location facing the hub 10a in the wall part 11e, as shown in FIG.

被検出体は15は、磁気検出素子3によって回転を検出するための円筒部(検出部)15aと前輪ホイール10の回転を受ける回転伝達部15bとがインサート成型によって一体的に形成されてなるものであり、ハウジング11の挿通部11aが挿通される。円筒部15aは、例えば、プラスチックマグネットからなり、表面に例えば、8極の着磁がなされるものである。回転伝達部15bは、例えば、ナイロン,ポリアセタール,ポリイアミド等の樹脂系材料やバネ材料綱,SPC圧延綱等の金属系材料からなる弾性部材から構成され、前輪ホイール10のハブに形成される取付部10bに嵌め込まれる複数の片部15cを有するものである。
The detection object 15 is formed by insert molding of a cylindrical portion (detection portion) 15a for detecting rotation by the magnetic detection element 3 and a rotation transmission portion 15b for receiving rotation of the front wheel 10. The insertion part 11a of the housing 11 is inserted. The cylindrical portion 15a is made of, for example, a plastic magnet, and the surface thereof is magnetized with, for example, 8 poles. The rotation transmitting portion 15b is made of an elastic member made of a metal material such as a resin material such as nylon, polyacetal, or polyamide, a spring material rope, or an SPC rolling rope, and is attached to the hub of the front wheel 10 It has a plurality of pieces 15c fitted into 10b .

図4に示すように、被検出体15が不適正な状態でハブ10aに配設された場合に、
ジング11に設けられる突出部11gは片部15cと当接するものである。ここでいう「不適正な状態」とは、回転伝達部15bが前輪ホイール10の回転を受けるための適正な位置に配設されない状態をいい、本発明の第二の実施の形態においては、片部15cがハブ10aに形成される取付部10bに配設されず、ハブ10aに撓んで乗り上げた状態をいう。回転検出装置Aを製造工程において二輪車に取り付ける際に、被検出体15が前記不適正な状態にてハブ10aに配設され、さらに回転検出装置Aが前記フロントホークと前輪ホイール10との間で締め付けられると、図4に示すように、被検出体15は片部15cが撓んだ前記不適正な状態のまま固定される。さらに前記不適正な状態で前輪ホイール10が回転すると、被検出体15は前記不適正な状態のまま前輪ホイール10とともに回転する。このとき、前輪ホイール10及び被検出体15が回転する間にハブ10aに撓んで乗り上げている変形した片部5cは、ハブ10aと対向してハウジング11に形成される突出部11gと当接する。突出部11gは、前記不適正な状態で回転する被検出体15の片部15cのストッパーとしての役割を果たし、被検出体15は片部15cが突出部11gに当接してからは、前輪ホイール10とともに回転せず、前輪ホイール10のみが回転する。そのため、片部5cが突出部11gに当接してから前輪ホイール10が一回転する間に、ハブ10aの取付部10bが片部15cの下方に位置する状態となり、片部15cが取付部10bに嵌め込まれる。すなわち、前輪ホイール10が一回転する間に、被検出体15の片部15cが取付部10bに嵌め込まれる適正な状態でハブ10aに配設されることになる。したがって、かかる回転検出装置Aは、被検出体15が前記不適正な状態で配設される場合であっても、被検出体15を破損することなく前記適正な状態で配設することが可能であり、従来の回転検出装置のように被検出体15を交換したり(構成部品の交換)、回転検出装置Aそのものを交換するといったことがなくなり、製造工程における回転検出装置Aの歩留まりを向上させることが可能となる。
As shown in FIG. 4, when it is disposed in the hub 10a in the detected member 15 is not appropriate, Ha
Protrusion 11g provided on the U Managing 11 is to contact with the support sections 15c. Here, the “inappropriate state” refers to a state in which the rotation transmitting portion 15b is not disposed at an appropriate position for receiving the rotation of the front wheel 10, and in the second embodiment of the present invention, The part 15c is not disposed on the mounting part 10b formed on the hub 10a, but refers to a state where the part 15c is bent and rides on the hub 10a. When the rotation detection device A is attached to the two-wheeled vehicle in the manufacturing process, the detected object 15 is disposed on the hub 10a in the inappropriate state, and the rotation detection device A is further disposed between the front fork and the front wheel 10. When tightened, as shown in FIG. 4, the detected object 15 is fixed in the inappropriate state in which the piece 15c is bent. Further, when the front wheel 10 rotates in the inappropriate state, the detected object 15 rotates together with the front wheel 10 in the inappropriate state. At this time, the deformed piece 5c that flexes and rides on the hub 10a while the front wheel 10 and the detected object 15 are rotating contacts the protrusion 11g formed on the housing 11 so as to face the hub 10a. The protruding portion 11g serves as a stopper for the piece 15c of the detected body 15 that rotates in the inappropriate state. After the piece 15c comes into contact with the protruding portion 11g, the detected wheel 15 has a front wheel. 10 and only the front wheel 10 rotates. Therefore, the mounting portion 10b of the hub 10a is positioned below the piece 15c while the front wheel 10 rotates once after the piece 5c comes into contact with the protruding portion 11g, and the piece 15c becomes the mounting portion 10b. It is inserted. That is, while the front wheel 10 makes one rotation, the piece 15c of the detected body 15 is disposed on the hub 10a in an appropriate state in which the piece 15c is fitted into the mounting portion 10b. Therefore, the rotation detection apparatus A can be disposed in the proper state without damaging the detected body 15 even when the detected body 15 is disposed in the inappropriate state. Thus, it is no longer necessary to replace the detected object 15 (replacement of components) as in the conventional rotation detection device, or to replace the rotation detection device A itself, thereby improving the yield of the rotation detection device A in the manufacturing process. It becomes possible to make it.

第一の実施の形態では、立方体状の突出部5dを設けたが、その形状は例えば、三角錐状あるいは、半球状であってもよく、任意に変更可能である。 In the first embodiment, the cubic protrusion 5d is provided, but the shape thereof may be, for example, a triangular pyramid or a hemisphere, and can be arbitrarily changed.

第二の実施の形態では、立方体状の突出部11gを設けたが、その形状は例えば、三角錐状あるいは、半球状であってもよく、任意に変更可能である。 In the second embodiment, the cubic protrusion 11g is provided, but the shape thereof may be, for example, a triangular pyramid or a hemisphere, and can be arbitrarily changed.

本発明の第一の実施の形態を示す断面図。Sectional drawing which shows 1st embodiment of this invention. 同上実施の形態の不適正な状態を示す断面図。Sectional drawing which shows the improper state of embodiment same as the above. 本発明の第二の実施の形態を示す断面図。Sectional drawing which shows 2nd embodiment of this invention. 同上実施の形態の不適正な状態を示す断面図。Sectional drawing which shows the improper state of embodiment same as the above.

符号の説明Explanation of symbols

1、11 ハウジング
1a、11a 挿通部
1d、11d 周縁部
11g 突出部
3 磁気検出手段(磁気検出素子)
4 シール部材
5、15 被検出体
5a、15a 円筒部(検出部)
5b、15b 回転伝達部
5c、15c 片部
5d 突出部
10 ホイール
10a ハブ
10b 取付部
回転検出装置
S 車軸
DESCRIPTION OF SYMBOLS 1, 11 Housing 1a, 11a Insertion part 1d, 11d Peripheral part 11g Protrusion part 3 Magnetic detection means (magnetic detection element)
4 Seal member 5, 15 Detected body 5a, 15a Cylindrical part (detection part)
5b, 15b Rotation transmission part
5c, 15c piece
5d protrusion
10 wheels
10a hub
10b mounting part
A rotation detector S axle

Claims (1)

二輪車のホイールが装着される車軸が挿通する挿通部を有するハウジングと、前記挿通部の外周に対して回転自在に配設されるとともに前記ホイールのハブに配設され前記ホイールとともに回転する被検出体と、前記被検出体の回転を検出する磁気検出手段と、前記ハウジングに装着され前記ハブの内壁に当接するとともに前記ハウジングの壁部にその内周が接し前記ハウジングを気密的に前記ハブに配設する弾性を有するシール部材と、を備え、前記ホイールとフロントホークとの間に狭持された状態で配設される回転検出装置であって、
前記被検出体は、前記磁気検出手段によって回転を検出するための複数の磁極を周縁に備え前記挿通部が挿通する円筒状の検出部と、
前記ホイールのハブに形成される取付部に嵌め込まれる片部を有し前記ホイールの回転を前記検出部に伝達する弾性部材からなる回転伝達部とを備え、
前記回転伝達部の片部が前記取付部に配設されず前記ハブに撓んで乗り上げた不適正な状態であると前記シール部材に当接する突出部を前記ハウジング方向に突出するように前記片部の端部に設けたことを特徴とする回転検出装置。
A housing having an insertion part through which an axle on which a wheel of a two-wheel vehicle is mounted is inserted, and a detected object that is rotatably arranged with respect to the outer periphery of the insertion part and is arranged on a hub of the wheel and rotates with the wheel And a magnetic detection means for detecting the rotation of the object to be detected, and abutting the inner wall of the hub mounted on the housing and contacting the wall of the housing with the inner periphery thereof, the housing being hermetically disposed on the hub. A rotation detecting device that is disposed in a state of being sandwiched between the wheel and the front fork,
The detection object has a plurality of magnetic poles for detecting rotation by the magnetic detection means at a peripheral edge, and a cylindrical detection unit through which the insertion unit is inserted,
A rotation transmission part comprising an elastic member having a piece fitted into an attachment part formed on the hub of the wheel and transmitting the rotation of the wheel to the detection part;
Wherein the rotation protrusion you abut on the seal member and the fragment portions are not appropriate for rides deflected to the hub without being arranged on the mounting portion of the transmission unit so as to protrude into the housing direction A rotation detecting device provided at an end of one piece.
JP2003358186A 2003-10-17 2003-10-17 Rotation detector Expired - Lifetime JP3906834B2 (en)

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