JP2018155667A

JP2018155667A - Mobile body detector

Info

Publication number: JP2018155667A
Application number: JP2017053841A
Authority: JP
Inventors: 佑貴須山; Yuki Suyama
Original assignee: Nippon Seiki Co Ltd
Current assignee: Nippon Seiki Co Ltd
Priority date: 2017-03-20
Filing date: 2017-03-20
Publication date: 2018-10-04

Abstract

PROBLEM TO BE SOLVED: To provide a mobile body detector which can make an accurate detection even if a vibration is generated.SOLUTION: The mobile body detector includes: a magnetic detection element 10 for outputting an electric signal according to the movement of a detection target object; a magnet 20 for applying a magnetic field to the magnetic detection element 10; a lead terminal 30 connected to the magnetic detection element 10; a first housing 40 having a container 43 for containing the magnetic detection element 10, the magnet 20, and the lead terminal 30; a second housing 50 covering the container 43, connected to the first housing 40 to be engaged with the first housing, and facing the detection target object. The first housing 40 includes: a fixing part 42 to be fixed to a fixing target 70; a first protrusion part on the side of the surface where the first and second housings 40 and 50 contact with each other which is adjacent to the fixing part 42; and a second protrusion part on the side of the contact surface of the first and second housings 40 and 50 which is opposite to the fixing part 42.SELECTED DRAWING: Figure 3

Description

本発明は、移動体検出装置に関する。 The present invention relates to a moving body detection apparatus.

直線運動や回転運動する移動体の移動を検出するため移動体検出装置が用いられている。例えば、特許文献１に開示されている移動体検出装置の固定構造は、磁気検出素子と、磁気検出素子に磁界を加える磁石と、磁気検出素子に接続される基板とを備える検知部をセンサ本体に組み付け、センサ本体に連結されるカバーで検知部を覆い、カバーを介して機器に固定するよう構成されており、移動体の移動に伴う磁界の変化を検出するようにしている。 A moving body detection device is used to detect the movement of a moving body that moves linearly or rotationally. For example, the moving body detection device fixing structure disclosed in Patent Document 1 includes a sensor unit including a magnetic detection element, a magnet that applies a magnetic field to the magnetic detection element, and a substrate connected to the magnetic detection element. The detection unit is covered with a cover connected to the sensor body and fixed to the device via the cover, and a change in the magnetic field accompanying the movement of the moving body is detected.

特開２００６−２０８０２３号公報JP 2006-208023 A

特許文献１に開示された移動体検出装置の固定構造では、機器にカバーを介してセンサ本体を固定しているため、機器の振動などによって磁気検出素子などがカバー内で変位することがあり、検出精度の低下を招くという問題がある。 In the fixed structure of the moving body detection device disclosed in Patent Document 1, the sensor body is fixed to the device via the cover, so the magnetic detection element or the like may be displaced in the cover due to vibration of the device, etc. There is a problem that the detection accuracy is lowered.

本発明は、このような実情に鑑みてなされたものであり、振動が生じても検出精度が高い移動体検出装置を提供することを目的とする。 The present invention has been made in view of such a situation, and an object of the present invention is to provide a moving body detection apparatus with high detection accuracy even when vibration occurs.

本発明の移動体検出装置１００は、
被検出体Ｄの移動に応じた電気信号を出力する磁気検出素子１０と、
磁気検出素子１０に磁界を加える磁石２０と、
磁気検出素子１０に接続されるリード端子３０と、
磁気検出素子１０、磁石２０およびリード端子３０を収容する収容部４３を有する第１のハウジング４０と、
収容部４３を覆って第１のハウジング４０と嵌合連結され被検出体Ｄと対向して配置される第２のハウジング５０と、を備え、
第１のハウジング４０に、固定対象７０に固定設置するための固定部４２と、
第１，第２のハウジングの接触面４１ｃ，５２ｃの、固定部４２側に第１突出部Ｐ１と、
第１，第２のハウジングの接触面４１ｃ，５２ｃの、固定部４２と反対側に第２突出部Ｐ２と、
を設けたことを特徴とする。 The moving object detection apparatus 100 of the present invention is
A magnetic detection element 10 for outputting an electrical signal corresponding to the movement of the detection object D;
A magnet 20 for applying a magnetic field to the magnetic detection element 10;
A lead terminal 30 connected to the magnetic detection element 10;
A first housing 40 having an accommodating portion 43 for accommodating the magnetic detection element 10, the magnet 20 and the lead terminal 30;
A second housing 50 that covers and fits the first housing 40 and is disposed to face the detection object D, covering the housing portion 43.
A fixing portion 42 for fixedly installing the first housing 40 on the fixing object 70;
A first protrusion P1 on the fixed portion 42 side of the contact surfaces 41c, 52c of the first and second housings;
A second projecting portion P2 on the opposite side of the fixed portion 42 of the contact surfaces 41c, 52c of the first and second housings;
Is provided.

第２突出部Ｐ２は、前記第１突出部Ｐ１より突出してなること
を特徴とする。 The second protrusion P2 protrudes from the first protrusion P1.

第１のハウジング４０に、第１突出部Ｐ１と、第２突出部Ｐ２を設けたことを特徴とする。 The first housing 40 is provided with a first protrusion P1 and a second protrusion P2.

または、第２のハウジング５０に、第１突出部Ｐ１と、第２突出部Ｐ２を設けたことを特徴とする Alternatively, the second housing 50 is provided with a first protrusion P1 and a second protrusion P2.

または、第１のハウジング４０に、第１突出部Ｐ１と、第２突出部Ｐ２の何れか一方を設けたことを特徴とする。 Alternatively, the first housing 40 is provided with either one of the first projecting portion P1 and the second projecting portion P2.

本発明によれば、振動が生じても検出精度が高い移動体検出装置を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, even if a vibration arises, a mobile body detection apparatus with high detection accuracy can be provided.

本発明の一実施形態に係る移動体検出装置を示す図。The figure which shows the moving body detection apparatus which concerns on one Embodiment of this invention. 図１をＺ方向から見た図。The figure which looked at FIG. 1 from the Z direction. 図２のＡ−Ａ線断面図。FIG. 3 is a sectional view taken along line AA in FIG. 2. 図１の移動体検出装置から第２ハウジングを外した図。The figure which removed the 2nd housing from the moving body detection apparatus of FIG. 図１の第２ハウジングを示す図。The figure which shows the 2nd housing of FIG. 図３の部品取付前の状態を示す図。The figure which shows the state before components attachment of FIG. （ａ）第２突出部周辺の要部拡大図、（ｂ）第１突出部周辺の要部拡大図。(A) The principal part enlarged view around the 2nd protrusion part, (b) The principal part enlarged view around the 1st protrusion part. 本発明の別の実施形態の第２ハウジングに係る図。The figure which concerns on the 2nd housing of another embodiment of this invention.

以下、本発明を実施するための一実施形態に係る移動体検出装置を、図面を参照しながら説明する。
なお、以下の説明では、図１に示した移動体検出装置１００の状態を基準として、前後方向をＸ方向、左右方向をＹ方向、上下方向をＺ方向とする。また、Ｘ方向、Ｙ方向及びＺ方向を示す矢印が向く方向を＋（プラス）方向、その反対方向を−（マイナス）方向として説明する。
本発明の移動体検出装置１００は、図２，図３に示すように被検出体Ｄの移動に応じた電気信号を出力する磁気検出素子１０と、磁気検出素子１０に磁界を加える磁石２０と、磁気検出素子１０に接続されるリード端子３０と、磁気検出素子１０、磁石２０およびリード端子３０が一方側に取り付けられる第１のハウジング４０と、第１のハウジング４０の一方側を覆って嵌合連結され被検出体と対向して配置される第２のハウジング５０と、を有し、第１のハウジング４０には、固定対象７０に固定設置するための固定部４２が設けられるとともに、リード端子３０の一部が埋設一体化されて構成されている。 Hereinafter, a mobile object detection apparatus according to an embodiment for carrying out the present invention will be described with reference to the drawings.
In the following description, based on the state of the moving body detection apparatus 100 shown in FIG. 1, the front-rear direction is the X direction, the left-right direction is the Y direction, and the up-down direction is the Z direction. In the following description, the direction in which the arrows indicating the X direction, the Y direction, and the Z direction are directed is the + (plus) direction, and the opposite direction is the-(minus) direction.
2 and 3, the moving body detection device 100 of the present invention includes a magnetic detection element 10 that outputs an electric signal according to the movement of the detection object D, and a magnet 20 that applies a magnetic field to the magnetic detection element 10. The lead terminal 30 connected to the magnetic detection element 10, the first housing 40 to which the magnetic detection element 10, the magnet 20 and the lead terminal 30 are attached on one side and the one side of the first housing 40 are covered. And a second housing 50 that is coupled and arranged to face the detection target. The first housing 40 is provided with a fixing portion 42 for fixing and mounting on the fixing object 70, and leads A part of the terminal 30 is embedded and integrated.

移動体検出装置１００は、例えば、二輪車の前輪の車軸近傍に設けられる回転検出装置として構成され、検出される前輪の回転数から車速を計測する。すなわち、移動体検出装置１００では、前輪の車軸が被検出体とされ、車軸近傍の車体が固定対象７０とされ、固定対象７０に第１のハウジング４０の固定部４２が固定され、第１のハウジング４０に嵌合連結された第２のハウジング５０が車軸と対向して配置される。 The moving body detection device 100 is configured as, for example, a rotation detection device provided near the axle of the front wheel of a two-wheeled vehicle, and measures the vehicle speed from the detected number of rotations of the front wheel. That is, in the moving body detection device 100, the front wheel axle is the detected object, the vehicle body in the vicinity of the axle is the fixed object 70, and the fixed portion 42 of the first housing 40 is fixed to the fixed object 70. A second housing 50 fitted and connected to the housing 40 is disposed to face the axle.

磁気検出素子１０は、被検出体である移動体Ｄの移動に伴う磁界の変化を感知するホールＩＣなどで構成されている。磁気検出素子１０は、先端の鉛直面（Ｙ−Ｚ面）の検出部１０ａに対して端子１０ｂが検出部１０ａの上端から直角に後方（−Ｘ方向）に突き出して設けられている。磁気検出素子１０は、第１のハウジング４０の収容部４３に収容される。収容部４３は、第１のハウジング４０と一体に成形され前方（＋Ｘ方向）に突き出すように成形されている。収容部４３は、前方側中央部が開口するとともに、上方（＋Ｚ方向）が開口した第１凹部４３ａが形成され、第１凹部４３ａ内に上方（＋Ｚ方向）から磁気検出素子１０の検出部１０ａが収容されて検出部１０ａの先端面（＋Ｘ方向の端面）が前方側中央部の開口に位置して被検出体と対向するように配置される。 The magnetic detection element 10 includes a Hall IC that senses a change in a magnetic field accompanying the movement of a moving body D that is a detection target. The magnetic detection element 10 is provided such that a terminal 10b protrudes rearward (−X direction) at a right angle from the upper end of the detection unit 10a with respect to the detection unit 10a on the vertical surface (YZ plane) at the tip. The magnetic detection element 10 is accommodated in the accommodating portion 43 of the first housing 40. The accommodating portion 43 is formed integrally with the first housing 40 and is formed so as to protrude forward (+ X direction). The accommodating portion 43 is formed with a first recess 43a having an opening at the front central portion and opening upward (+ Z direction), and the detection portion 10a of the magnetic detection element 10 from above (+ Z direction) in the first recess 43a. Is disposed so that the front end surface (the end surface in the + X direction) of the detection unit 10a is positioned at the opening in the front central portion and faces the detection target.

磁石２０は、磁気検出素子１０に磁界を加えるためのものである。磁石２０は、例えば直方体状に形成されたフェライト磁石で構成される。磁石２０は、磁気検出素子１０が収容される第１凹部４３ａに隣接する後方（−Ｘ方向）に設けられ下方（−Ｚ方向）が開口した第２凹部４３ｂに下方から収容されている。 The magnet 20 is for applying a magnetic field to the magnetic detection element 10. The magnet 20 is composed of, for example, a ferrite magnet formed in a rectangular parallelepiped shape. The magnet 20 is housed from below in a second recess 43b provided in the rear (−X direction) adjacent to the first recess 43a in which the magnetic detection element 10 is accommodated and opened downward (−Z direction).

リード端子３０は、第１のハウジング４０に一体成形される収容部４３の上面と平行に配置されて第１のハウジング４０および収容部４３にインサート成形により埋設一体化されており、前方側の端部が磁気検出素子１０の端子１０ｂと半田付けなどで接続され、後方側の端部３０ａ（図３参照）が第１のハウジング４０の後方のコネクタ部４４内に突き出すコネクタピンとして検出信号を外部に導出できるようにしてある。
なお、リード端子３０の前方側の端部と磁気検出素子１０の端子１０ｂとの間には、基板を設け、磁気検出素子１０の検出信号を処理するＩＣやチップ素子などの電子部品が実装された出力信号処理回路を設けておき、基板の処理回路で処理された出力信号を、リード端子３０を介してコネクタ部４４から外部に導出できるようにしたり、あるいは、磁気検出素子１０からの検出信号を出力した後、外部の処理回路で処理するようにしてある。 The lead terminal 30 is disposed in parallel with the upper surface of the housing portion 43 integrally formed with the first housing 40 and is embedded and integrated in the first housing 40 and the housing portion 43 by insert molding. Is connected to the terminal 10b of the magnetic detection element 10 by soldering or the like, and the end 30a (see FIG. 3) on the rear side is externally connected as a connector pin protruding into the connector 44 on the rear side of the first housing 40. Can be derived.
A substrate is provided between the front end of the lead terminal 30 and the terminal 10b of the magnetic detection element 10, and an electronic component such as an IC or a chip element for processing a detection signal of the magnetic detection element 10 is mounted. The output signal processing circuit is provided so that the output signal processed by the substrate processing circuit can be led out from the connector portion 44 via the lead terminal 30, or the detection signal from the magnetic detection element 10 is detected. Is output and processed by an external processing circuit.

第１のハウジング４０は、図４に示すように、大小２つの円弧部を連結した外形が略小判状の本体部４１と、本体部４１の小さな円弧部の中心部に同心上に形成された固定部４２と、本体部４１の大きな円弧部の中心部から前方（＋Ｘ方向）に突き出して一体に形成された収容部４３と、本体部４１の大きな円弧部から後方（−Ｘ方向）に突き出して一体に形成されたコネクタ部４４と、を備えて構成されており、例えばポリブチレンテレフタレート（ＰＢＴ：Poly Butylene Terephthalate）樹脂など合成樹脂製とされている。なお、２つの円弧部の大きさは同じであっても良い。 As shown in FIG. 4, the first housing 40 is formed concentrically at the center portion of the main body portion 41 having a substantially oval outer shape connecting two large and small arc portions and the small arc portion of the main body portion 41. The fixing part 42, the housing part 43 integrally formed by protruding forward (+ X direction) from the center of the large arc part of the main body part 41, and the rear part (−X direction) protruding from the large arc part of the main body part 41 And integrally formed connector portion 44, and is made of a synthetic resin such as a polybutylene terephthalate (PBT) resin. Note that the two arc portions may have the same size.

固定部４２は、金属製で円筒状のカラー４２ａを備えるとともに、第１のハウジング４０の本体部４１の下方に突き出す部分に一体化されている。固定部４２は、本体部４１の小さな円弧部に金属製の円筒状のカラー４２ａをインサート成形することで一体化されている。カラー４２ａには、図３に示すように、後方（−Ｘ方向）から固定用ボルトを入れて固定対象７０に締め付けることで、第１のハウジング４０を固定できる。
本体部４１は、大きな円弧部の内側縁部と小さな円弧部のカラー４２ａの大きな円弧部側の半円部とで囲まれる部分が側壁部４１ａとされ、側壁部４１ａで囲まれた内側部分が凹部とされて平板状の底板部４１ｂで後方（−Ｘ方向）側が塞がれている。 The fixing portion 42 is made of a metal and has a cylindrical collar 42 a and is integrated with a portion protruding below the main body portion 41 of the first housing 40. The fixed portion 42 is integrated by insert-molding a metal cylindrical collar 42 a in a small arc portion of the main body portion 41. As shown in FIG. 3, the first housing 40 can be fixed to the collar 42 a by inserting a fixing bolt from the rear (−X direction) and tightening it to the fixing object 70.
In the main body 41, a portion surrounded by an inner edge portion of the large arc portion and a semicircular portion on the large arc portion side of the collar 42a of the small arc portion is a side wall portion 41a, and an inner portion surrounded by the side wall portion 41a is The rear (−X direction) side is closed by a flat bottom plate portion 41 b which is a concave portion.

底板部４１ｂは、第２のハウジング５０とのＸ方向の接触面である。底板部４１ｂの固定部４２側に第１突出部Ｐ１、固定部４２と反対側に第２突出部Ｐ２を設ける。第２突出部Ｐ２の底板部４１ｂからの高さＨ２を第１突出部Ｐ１の底板部４１ｂからの高さＨ１よりも高くする（突出させる）。第１のハウジング４０、第２のハウジング５０を嵌合させることで第１，第２突出部Ｐ１，Ｐ２は潰れ、第１のハウジング４０，第２のハウジング５０の間に隙間が生じにくくなる。また、第２突出部Ｐ２の高さＨ２が第１突出部Ｐ１の高さＨ１よりも高いため、固定対象７０と固定部４２とを固定用ボルトによって締め付ける際に、第２突出部Ｐ２が第１突出部Ｐ１よりも潰れやすい。第２突出部Ｐ２によって蓋板部５２ｂと固定対象７０とが隙間なく当接される。 The bottom plate portion 41 b is a contact surface in the X direction with the second housing 50. A first protrusion P1 is provided on the fixed plate 42 side of the bottom plate portion 41b, and a second protrusion P2 is provided on the opposite side of the fixed portion 42. The height H2 from the bottom plate portion 41b of the second projecting portion P2 is set higher (projected) than the height H1 from the bottom plate portion 41b of the first projecting portion P1. By fitting the first housing 40 and the second housing 50, the first and second projecting portions P <b> 1 and P <b> 2 are crushed, and a gap is hardly generated between the first housing 40 and the second housing 50. In addition, since the height H2 of the second protrusion P2 is higher than the height H1 of the first protrusion P1, the second protrusion P2 is the second protrusion P2 when the fixing object 70 and the fixing part 42 are tightened with the fixing bolt. It is easier to crush than 1 protrusion part P1. The lid plate portion 52b and the fixed object 70 are brought into contact with each other without a gap by the second projecting portion P2.

収容部４３は、図３に示すように本体部４１の底板部４１ｂの前方側に円柱部４３ｃを介して前方に突き出して略直方体状に一体に合成樹脂で成形されている。円柱部４３ｃの外周部には、Ｏリング溝が形成されてＯリング４５が装着され、後述する嵌合連結される第２のハウジング５０との間をシール状態とする。
収容部４３は、既に説明したように、第１凹部４３ａと第２凹部４３ｂとが設けられ、第１凹部４３ａには、磁気検出素子１０が、第２凹部４３ｂには、磁石２０がそれぞれ装着される。 As shown in FIG. 3, the accommodating portion 43 projects forward from the front side of the bottom plate portion 41 b of the main body portion 41 through the cylindrical portion 43 c and is integrally molded with a synthetic resin in a substantially rectangular parallelepiped shape. An O-ring groove is formed on the outer peripheral portion of the cylindrical portion 43c and an O-ring 45 is mounted, and a sealing state is established between the cylindrical housing 43c and a second housing 50 to be fitted and connected.
As described above, the accommodating portion 43 is provided with the first concave portion 43a and the second concave portion 43b. The magnetic detecting element 10 is mounted on the first concave portion 43a, and the magnet 20 is mounted on the second concave portion 43b. Is done.

コネクタ部４４は、中空の四角筒状とされて後方（−Ｘ方向）が開口し、本体部４１の底板部４１ｂから後方に突き出して一体に形成されており、外部の装着側のコネクタ（図示せず）を所定の向きに連結でき、係止凹凸部によってコネクタ同士の係止連結状態を保持できるようにしてある。 The connector 44 has a hollow rectangular tube shape and is open at the rear (−X direction) and protrudes rearward from the bottom plate 41b of the main body 41, and is formed integrally with an external connector (see FIG. (Not shown) can be connected to each other in a predetermined direction, and the engagement and connection of the connectors can be held by the engagement irregularities.

第２のハウジング５０は、図１，図５に示すように第１のハウジング４０の一方側（前方側（＋Ｘ方向））の収容部４３を覆って嵌合連結され被検出体と対向して配置される有底の円筒部５１と、円筒部５１の開口端に一体に形成されたフランジ部５２とを備えて形成されている。第２のハウジング５０は、第１のハウジング４０と同一の合成樹脂製とされ、例えば、ポリブチレンテレフタレート（ＰＢＴ）樹脂など合成樹脂製とされている。
第２のハウジング５０は、第１のハウジング４０に一体に形成された収容部４３に収容された磁気検出素子１０および磁石２０などを覆うカバーとして円筒部５１が機能しており、円筒部５１の外周には、補強用のリブ５１ａが円周方向等間隔に複数本一体に形成してある。リブ５１ａにより、剛性を高めて固定対象７０からの振動の影響を緩和する。また、リブ５１ａは、Ｏリング５３取り付け時の誘い込みおよび移動体検出装置１００を固定対象７０に取り付ける際の誘い込みとしての機能を有している。円筒部５１のリブ５１ａの後方には、Ｏリング溝５１ｂが形成され、Ｏリング５３が装着され、固定対象７０との間をシールするとともに、Ｏリング５３によって固定対象７０からの振動の第１のハウジング４０への伝達を抑えている。
フランジ部５２は、第１のハウジング４０の側壁部４１ａの内側形状に沿った外形状に形成されており、周囲を囲む側壁部５２ａと、側壁部５２ａの前方側の開口部を塞ぐとともに、円筒部５１が一体に設けられた蓋板部５２ｂとで構成される。側壁部５２ａの底面５２ｃは、第１のハウジング４０とのＸ方向の接触面である。
これにより、第２のハウジング５０を第１のハウジング４０の内側に被せるように装着して連結することで、第１のハウジング４０の側壁部４１ａの内側に、第２のハウジング５０のフランジ部５２の側壁部５２ａが接するように嵌合され、側壁部４１ａの開口部が蓋板部５２ｂで塞がれた状態となり、フランジ部５２が第１のハウジング４０の固定部４２と同一の厚みとなる。
すなわち、第１のハウジング４０の本体部４１の側壁部４１ａの高さと第２のハウジング５０のフランジ部５２の側壁部５２ａの高さとが、嵌合連結状態とした場合に、蓋板部５２ｂが第１のハウジング４０の固定部４２と同一の厚みとなるように設定してある。
また、第２のハウジング５０のフランジ部５２は、第１のハウジング４０を固定部４２によって固定対象７０に固定設置すると、第１のハウジング４０と固定対象７０とに挟み込まれることになり、移動体検出装置１００を確実に固定対象７０に保持することができる。 As shown in FIGS. 1 and 5, the second housing 50 is fitted and connected so as to cover the housing portion 43 on one side (front side (+ X direction)) of the first housing 40, and is opposed to the detected object. The bottomed cylindrical portion 51 to be disposed and the flange portion 52 formed integrally with the opening end of the cylindrical portion 51 are formed. The second housing 50 is made of the same synthetic resin as the first housing 40, and is made of synthetic resin such as polybutylene terephthalate (PBT) resin.
In the second housing 50, the cylindrical portion 51 functions as a cover that covers the magnetic detection element 10, the magnet 20, and the like housed in the housing portion 43 formed integrally with the first housing 40. On the outer periphery, a plurality of reinforcing ribs 51a are integrally formed at equal intervals in the circumferential direction. The rib 51a increases the rigidity and reduces the influence of vibration from the fixed object 70. In addition, the rib 51 a has a function as an invitation when attaching the O-ring 53 and an invitation when attaching the moving body detection apparatus 100 to the fixed object 70. An O-ring groove 51 b is formed behind the rib 51 a of the cylindrical portion 51, and an O-ring 53 is attached to seal between the fixed object 70 and the first vibration of the fixed object 70 is caused by the O-ring 53. Transmission to the housing 40 is suppressed.
The flange portion 52 is formed in an outer shape along the inner shape of the side wall portion 41a of the first housing 40, and closes the side wall portion 52a surrounding the periphery and the opening on the front side of the side wall portion 52a, and is cylindrical. It is comprised with the cover plate part 52b in which the part 51 was provided integrally. A bottom surface 52 c of the side wall 52 a is a contact surface in the X direction with the first housing 40.
Accordingly, the second housing 50 is mounted and connected so as to cover the inside of the first housing 40, so that the flange portion 52 of the second housing 50 is provided inside the side wall portion 41 a of the first housing 40. The side wall portion 52a is fitted so as to be in contact with each other, the opening portion of the side wall portion 41a is closed by the cover plate portion 52b, and the flange portion 52 has the same thickness as the fixing portion 42 of the first housing 40. .
That is, when the height of the side wall portion 41a of the main body portion 41 of the first housing 40 and the height of the side wall portion 52a of the flange portion 52 of the second housing 50 are in the fitted connection state, the lid plate portion 52b is The thickness is set to be the same as that of the fixed portion 42 of the first housing 40.
Further, the flange portion 52 of the second housing 50 is sandwiched between the first housing 40 and the fixed object 70 when the first housing 40 is fixedly installed on the fixed object 70 by the fixing portion 42, and the moving body The detection device 100 can be reliably held on the fixed object 70.

第１のハウジング４０と第２のハウジング５０との間には、嵌合連結状態を保持する連結保持機構６０が設けられている。
固定対象７０に固定される固定側となる第１のハウジング４０には、側壁部４１ａに４箇所の係合凹部６１が略矩形の孔として形成されている。
第１のハウジング４０に嵌合連結される連結側となる第２のハウジング５０の側壁部５２ａに、係合凹部６１に内側から外側に向かって係合するフックを備えた係合凸部６２が一体に形成されている。
これにより、第２のハウジング５０の側壁部５２ａを第１のハウジング４０の側壁部４１ａの内側に装着して連結することで、第２のハウジング５０の係合凸部６２のフックが第１のハウジング４０の係合凹部６１の孔に係合し、第１のハウジング４０と第２のハウジング５０の嵌合連結状態が連結保持機構６０で保持される。
なお、係合凹部６１と係合凸部６２は、逆に第１のハウジング４０に係合凸部６２を設け、第２のハウジング５０に係合凹部６１を設けるようにしても良い。
さらに、この移動体検出装置１００では、第１のハウジング４０を固定部４２を介して固定対象７０に固定設置すると、第１のハウジング４０に嵌合連結した第２のハウジング５０のフランジ部５２が、第１のハウジング４０と固定対象７０とに挟み込まれることになり、例え、連結保持機構６０による嵌合連結状態に問題が生じても移動体検出装置１００を確実に固定対象７０に保持することができる。 Between the first housing 40 and the second housing 50, a connection holding mechanism 60 that holds the fitting connection state is provided.
In the first housing 40 on the fixed side fixed to the fixed object 70, four engagement recesses 61 are formed as substantially rectangular holes in the side wall 41a.
On the side wall 52a of the second housing 50, which is a coupling side to be fitted and connected to the first housing 40, there is an engaging convex portion 62 provided with a hook that engages with the engaging concave portion 61 from the inside to the outside. It is integrally formed.
Thus, the hook of the engaging convex portion 62 of the second housing 50 is connected to the first housing 40 by attaching the side wall portion 52a of the second housing 50 to the inner side of the side wall portion 41a of the first housing 40 and connecting them. The engagement and engagement state of the first housing 40 and the second housing 50 is held by the connection holding mechanism 60 by engaging with the hole of the engagement recess 61 of the housing 40.
Note that the engagement recess 61 and the engagement protrusion 62 may be reversely provided with the engagement protrusion 62 in the first housing 40 and the engagement recess 61 in the second housing 50.
Furthermore, in this moving body detection apparatus 100, when the first housing 40 is fixedly installed on the fixed object 70 via the fixing portion 42, the flange portion 52 of the second housing 50 that is fitted and connected to the first housing 40 is provided. The movable body detecting device 100 is securely held on the fixed object 70 even if a problem occurs in the fitting and connecting state by the connection holding mechanism 60, for example, between the first housing 40 and the fixed object 70. Can do.

このような移動体検出装置１００は、図３に示すように、円柱部４３ｃにＯリング４５を装着し、収容部４３に磁気検出素子１０および磁石２０を収納した第１のハウジング４０に第２のハウジング５０を被せるようにして嵌合連結し、連結保持機構６０の係合凹部６１と係合凸部６２とを係合して連結状態を保持する。また、第２のハウジング５０のＯリング溝５１ｂにＯリング５３を装着しておく。
次いで、移動体検出装置１００を、固定対象７０に形成した図示しない被検出体と対向する取付孔７１に第２のハウジング５０を装着するようにし、第１のハウジング４０の固定部４２のカラー４２ａに入れた取付ボルトを固定対象７０に締め付けることで固定する。コネクタ部４４には、外部から装着用のコネクタが接続され、検出信号を外部に出力できるようにする。
これにより、移動体検出装置１００は、取付ボルトで固定対象７０に固定され、被検出体と磁気検出素子１０が対向した状態となり、被検出体の移動量（回転数など）が磁気検出素子１０で検出（計測）される。
移動体検出装置１００を、例えば、回転検出装置とする場合には、二輪車の前輪の車軸が被検出体とされ、車軸近傍の車体が固定対象７０とされ、固定対象７０に第１のハウジング４０の固定部４２を固定することで、第１のハウジング４０に嵌合連結された第２のハウジング５０の先端が取付孔７１内で車軸と対向して配置される。これにより、被検出体である二輪車の車軸が回転することにより生じる磁気変化から車軸の回転数が計測され、車速が演算されて外部に出力されたり、あるいは、車軸の回転数が検出されて出力される。 As shown in FIG. 3, such a moving body detection device 100 has a second housing in a first housing 40 in which an O-ring 45 is attached to a cylindrical portion 43 c and the magnetic detection element 10 and the magnet 20 are accommodated in the accommodation portion 43. The housing 50 is covered and fitted and connected, and the engagement concave portion 61 and the engagement convex portion 62 of the connection holding mechanism 60 are engaged to hold the connection state. In addition, an O-ring 53 is mounted in the O-ring groove 51 b of the second housing 50.
Next, the moving body detection apparatus 100 is configured such that the second housing 50 is mounted in the mounting hole 71 facing the detection target (not shown) formed in the fixed object 70, and the collar 42 a of the fixing portion 42 of the first housing 40. The mounting bolts placed in are fixed to the fixing object 70 by fastening them. A connector for mounting is connected to the connector portion 44 from the outside so that a detection signal can be output to the outside.
As a result, the moving body detection device 100 is fixed to the fixed object 70 with the mounting bolt, and the detected body and the magnetic detection element 10 face each other, and the amount of movement of the detected body (such as the number of rotations) is the magnetic detection element 10. Is detected (measured).
When the moving body detection device 100 is, for example, a rotation detection device, the axle of the front wheel of the two-wheeled vehicle is the detected body, the vehicle body in the vicinity of the axle is the fixed object 70, and the first housing 40 is fixed to the fixed object 70. By fixing the fixing portion 42, the tip of the second housing 50 that is fitted and connected to the first housing 40 is disposed in the mounting hole 71 so as to face the axle. As a result, the rotational speed of the axle is measured from the magnetic change caused by the rotation of the axle of the two-wheeled vehicle that is to be detected, and the vehicle speed is calculated and output to the outside, or the rotational speed of the axle is detected and output. Is done.

移動体検出装置１００では、第１のハウジング４０に収容部４３を一体に形成してリード端子３０をインサート成形により埋設一体化しておき、収容部４３の第１凹部４３ａに磁気検出素子１０を収容し、第２凹部４３ｂに磁石２０を収容し、第１のハウジング４０を、固定部４２を介して固定対象７０に固定しているので、被検出体Ｄの振動系と移動体検出装置１００の振動系が同一となる。
これにより、これまで装置では、第２のハウジング５０を機器側である固定対象７０に固定し、第２のハウジング５０に第１のハウジング４０を連結していたので、被検出体の振動が第２のハウジング５０を介して磁気検出素子１０や磁石２０が収容固定された第１のハウジング４０に伝達され、２つの振動系から振動が伝達され、これらの振動の影響により検出精度の低下を招いていたが、本願移動体検出装置１００によれば、振動系が１つとなり振動の影響を抑えて高精度に検出することができる。
また、これまでの装置では、第２のハウジング５０に磁気検出素子１０や磁石２０を収容し樹脂を充填して硬化させるようにしていたが、本願移動体検出装置１００では、樹脂の充填による固定が不要となり、硬化時間を設ける必要がなく、短時間で効率よく生産することができる。
移動体検出装置１００では、第１のハウジング４０の内側に第２のハウジング５０を配置して嵌合連結するようにしたので、第２のハウジング５０をコンパクトにすることができ、小型軽量化により振動系の質量を小さくして振動の影響を抑えることができる。
また、第２のハウジング５０は、Ｏリング溝５１ｂの外周に装着したＯリング５３を介して固定対象７０の取付孔７１に装着してあるので、固定対象７０からの振動をＯリング５３で緩和することができ、振動低減効果を期待することができる。 In the moving body detection device 100, the housing portion 43 is integrally formed in the first housing 40 and the lead terminal 30 is embedded and integrated by insert molding, and the magnetic detection element 10 is housed in the first recess 43 a of the housing portion 43. Since the magnet 20 is accommodated in the second recess 43b and the first housing 40 is fixed to the fixed object 70 via the fixing portion 42, the vibration system of the detection object D and the moving object detection device 100 are The vibration system is the same.
Thus, in the apparatus so far, the second housing 50 is fixed to the fixed object 70 on the device side, and the first housing 40 is connected to the second housing 50, so that the vibration of the detected object is the first. The vibration is transmitted from the two vibration systems to the first housing 40 in which the magnetic detection element 10 and the magnet 20 are housed and fixed via the two housings 50, and the detection accuracy is lowered due to the influence of these vibrations. However, according to the moving body detection apparatus 100 of the present application, there is only one vibration system, and the detection can be performed with high accuracy while suppressing the influence of vibration.
In the conventional apparatus, the magnetic detection element 10 and the magnet 20 are accommodated in the second housing 50 and filled with resin to be cured. However, in the moving body detection apparatus 100 of the present application, fixing by filling with resin is performed. Is not required, and it is not necessary to provide a curing time, and can be produced efficiently in a short time.
In the moving body detection device 100, the second housing 50 is arranged and fitted and connected to the inside of the first housing 40, so that the second housing 50 can be made compact and reduced in size and weight. The influence of vibration can be suppressed by reducing the mass of the vibration system.
Further, since the second housing 50 is mounted in the mounting hole 71 of the fixed object 70 via the O-ring 53 mounted on the outer periphery of the O-ring groove 51b, the vibration from the fixed object 70 is mitigated by the O-ring 53. And a vibration reduction effect can be expected.

以上、実施の形態と共に、具体的に説明したように、本発明の移動体検出装置１００によれば、被検出体の移動に応じた電気信号を出力する磁気検出素子１０と、磁気検出素子１０に磁界を加える磁石２０と、磁気検出素子１０に接続されるリード端子３０と、磁気検出素子１０、磁石２０およびリード端子３０が一方側に取り付けられる第１のハウジング４０と、第１のハウジング４０の一方側を覆って嵌合連結され被検出体と対向して配置される第２のハウジング５０と、を有し、第１のハウジング４０には、固定対象７０に固定設置するための固定部４２が設けられるとともに、リード端子３０の一部が埋設一体化されて構成されているので、固定対象７０の振動系と磁気検出素子１０や磁石２０の振動系が同一となり、異なる振動系による検出精度の低下を抑えて高精度に検出することができる。
また、固定対象７０に固定する第１のハウジング４０に磁気検出素子１０や磁石２０を固定するので、第２のハウジング５０に樹脂を充填し硬化させて磁気検出素子１０や磁石２０を固定する必要がなく、硬化時間が不要となり短時間に効率よく生産することができる。 As described above in detail with the embodiment, according to the moving body detection device 100 of the present invention, the magnetic detection element 10 that outputs an electric signal according to the movement of the detected object, and the magnetic detection element 10 Magnet 20 for applying a magnetic field, lead terminal 30 connected to magnetic detection element 10, first housing 40 to which magnetic detection element 10, magnet 20 and lead terminal 30 are attached on one side, and first housing 40 A second housing 50 that is fitted and connected so as to cover one side of the first housing 50 and is disposed to face the detection target, and the first housing 40 has a fixing portion for fixing and fixing to the fixing object 70. 42 and a part of the lead terminal 30 is embedded and integrated, the vibration system of the fixed object 70 and the vibration system of the magnetic detection element 10 and the magnet 20 are the same, and different vibration systems. It can be detected with high accuracy by suppressing a reduction in detection accuracy due.
Further, since the magnetic detection element 10 and the magnet 20 are fixed to the first housing 40 fixed to the fixing object 70, it is necessary to fix the magnetic detection element 10 and the magnet 20 by filling the second housing 50 with resin and curing. No curing time is required, and production can be efficiently performed in a short time.

本発明の移動体検出装置１００によれば、第２のハウジング５０には、固定部４２による固定設置にともない第１のハウジング４０と固定対象７０とに挟み込まれるフランジ部５２が設けられているので、第１のハウジング４０を介して第２のハウジング５０を確実に固定することができる。これにより、万一、第１のハウジング４０と第２のハウジング５０との嵌合連結が解放されるようなことがあってもそのまま固定対象７０への固定状態を維持することができる。 According to the moving body detection apparatus 100 of the present invention, the second housing 50 is provided with the flange portion 52 that is sandwiched between the first housing 40 and the fixed object 70 when the fixing portion 42 is fixed. The second housing 50 can be securely fixed via the first housing 40. Thereby, even if the fitting connection of the 1st housing 40 and the 2nd housing 50 may be released by any chance, the fixed state to fixed object 70 can be maintained as it is.

本発明の移動体検出装置１００によれば、固定部４２は、金属製で円筒状のカラー４２ａを備えるとともに、第１のハウジング４０に一体化され、フランジ部５２は、固定部４２の周囲の少なくとも一部に形成されているので、固定部４２の金属製のカラー４２ａによって固定対象７０に確実に固定することができるとともに、固定部４２の固定にともなってフランジ部５２を挟んで固定することができ、一層強固に、確実に固定することができる。 According to the moving body detection apparatus 100 of the present invention, the fixed portion 42 includes a metal-made cylindrical collar 42 a and is integrated with the first housing 40, and the flange portion 52 is provided around the fixed portion 42. Since it is formed at least in part, it can be securely fixed to the fixing object 70 by the metal collar 42a of the fixing portion 42, and the fixing portion 42 is fixed with the flange portion 52 interposed therebetween. Can be fixed more firmly and securely.

本発明は、上述の実施形態に何ら限定するものではない。
例えば、上述の実施形態では、移動体検出装置１００を回転検出装置として回転運動する被検出体を検出する場合を例に説明したが、これに限らず、直線運動する被検出体を検出する場合であっても良い。 The present invention is not limited to the above-described embodiment.
For example, in the above-described embodiment, the case where the moving object detection device 100 is used as the rotation detection device to detect the object to be rotated is described as an example. It may be.

磁気検出素子１０は、ホールＩＣで構成した場合を例に説明したが、これに限らず他の形式のものなど任意のものであっても良い。 The case where the magnetic detection element 10 is configured by a Hall IC has been described as an example. However, the magnetic detection element 10 is not limited to this and may be of any other type.

第１のハウジング４０や第２のハウジング５０等の素材については、特に限定するものではなく、通常使用される合成樹脂などを用いることができる。 The materials for the first housing 40, the second housing 50, and the like are not particularly limited, and commonly used synthetic resins can be used.

移動体検出装置１００でのＸ，Ｙ，Ｚ方向は、説明のために設定したものであり、移動体検出装置１００の取付方向等は、これらの方向に限定するものでない。 The X, Y, and Z directions in the moving body detection device 100 are set for explanation, and the mounting direction and the like of the moving body detection device 100 are not limited to these directions.

なお、上述の実施形態では、第１ハウジング側に第１，第２突出部を設ける場合を例示したが、図８（ａ）に示すように第２ハウジング側に第１，第２突出部を設ける構造や、図８（ｂ）に示すように第１ハウジング側に一方の突出部、第２ハウジング側に他方の突出部を設ける構造にすることによっても同様の効果が期待できる。また、第１突出部Ｐ１と第２突出部Ｐ２とで、異なる高さの形状である実施形態を示したが、異なる厚みによって形成し、外からの応力による変形のし易さ（強度）を異なるように構成することもできる。 In the above-described embodiment, the case where the first and second protrusions are provided on the first housing side is illustrated. However, as shown in FIG. 8A, the first and second protrusions are provided on the second housing side. Similar effects can be expected by providing a structure in which one protrusion is provided on the first housing side and the other protrusion is provided on the second housing side as shown in FIG. 8B. Moreover, although embodiment which is the shape of different height was shown by the 1st protrusion part P1 and the 2nd protrusion part P2, it forms with different thickness and the ease (strength) of deformation | transformation by the stress from the outside is shown. It can also be configured differently.

１００移動体検出装置
１０磁気検出素子
１０ａ検出部
１０ｂ端子
２０磁石
３０リード端子
３０ａ端子
４０第１のハウジング
４１本体部
４１ａ側壁部
４１ｂ底板部（接触面）
４２固定部
４２ａカラー
４３収容部
４３ａ第１凹部
４３ｂ第２凹部
４３ｃ円柱部
４４コネクタ部
４５Ｏリング
５０第２のハウジング
５１円筒部
５１ａリブ
５１Ｏリング溝
５２フランジ部
５２ａ側壁部
５２蓋板部
５２ｃ底面（接触面）
５３Ｏリング
６０連結保持機構
６１係合凹部
６２係合凸部
７０固定対象
７１取付孔
Ｄ移動体（被検出体）
Ｐ１第１突出部
Ｐ２第２突出部
Ｈ１高さ
Ｈ２高さ

DESCRIPTION OF SYMBOLS 100 Moving body detection apparatus 10 Magnetic detection element 10a Detection part 10b Terminal 20 Magnet 30 Lead terminal 30a Terminal 40 1st housing 41 Main body part 41a Side wall part 41b Bottom plate part (contact surface)
42 Fixing part 42a Collar 43 Housing part 43a 1st recessed part 43b 2nd recessed part 43c Cylindrical part 44 Connector part 45 O-ring 50 2nd housing 51 Cylindrical part 51a Rib 51 O-ring groove 52 Flange part 52a Side wall part 52 Cover plate part 52c Bottom (contact surface)
53 O-ring 60 Connection holding mechanism 61 Engaging recess 62 Engaging projection 70 Fixed object 71 Mounting hole D Moving object (detected object)
P1 1st protrusion P2 2nd protrusion H1 height H2 height

Claims

A magnetic detection element that outputs an electrical signal corresponding to the movement of the detected object;
A magnet for applying a magnetic field to the magnetic sensing element;
A lead terminal connected to the magnetic detection element;
A first housing having an accommodating portion for accommodating the magnetic detection element, the magnet, and the lead terminal;
In a moving body detection device comprising: a second housing that is fitted and connected to the first housing so as to cover the housing portion and is disposed to face the detected body.
A fixing portion for fixedly installing the first housing on the fixing object;
A first protrusion on the fixed portion side of the contact surface of the first and second housings;
A second protrusion on the opposite side of the contact surface of the first and second housings from the fixed portion;
A moving body detection apparatus comprising:

The moving body detection device according to claim 1, wherein the second protrusion is protruded from the first protrusion.

The moving body detection apparatus according to claim 1, wherein the first protrusion and the second protrusion are provided in the first housing.

The moving body detection apparatus according to claim 1, wherein the second housing includes the first protrusion and the second protrusion.

The moving body detection device according to claim 1, wherein the first housing is provided with either the first protrusion or the second protrusion.