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WO2018110360A1 - Dispositif de détection de corps mobile - Google Patents

Dispositif de détection de corps mobile Download PDF

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Publication number
WO2018110360A1
WO2018110360A1 PCT/JP2017/043567 JP2017043567W WO2018110360A1 WO 2018110360 A1 WO2018110360 A1 WO 2018110360A1 JP 2017043567 W JP2017043567 W JP 2017043567W WO 2018110360 A1 WO2018110360 A1 WO 2018110360A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
detection element
fixed
magnet
moving body
Prior art date
Application number
PCT/JP2017/043567
Other languages
English (en)
Japanese (ja)
Inventor
佑貴 須山
Original Assignee
日本精機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本精機株式会社 filed Critical 日本精機株式会社
Priority to CN201780076664.8A priority Critical patent/CN110062887B/zh
Priority to JP2018556595A priority patent/JP7031607B2/ja
Publication of WO2018110360A1 publication Critical patent/WO2018110360A1/fr
Priority to JP2022017708A priority patent/JP7256974B2/ja

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Classifications

    • 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

Definitions

  • the present invention relates to a moving object detection apparatus.
  • a moving body detection device is used to detect the movement of a moving body that moves linearly or rotationally.
  • 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.
  • the rotation detection device disclosed in Patent Document 2 includes a detection unit including a magnetic detection element, a magnet for applying a magnetic field to the magnetic detection element, and a substrate connected to the magnetic detection element in a bottomed case. And it is comprised so that a detection part may be fixed with resin with which it fills in a case, and it fixes to an apparatus via a case.
  • the sensor body 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.
  • a magnetic detection element or the like is displaced in the case by vibration of the device or the like because the magnetic detection element or the like is fixed by a filled resin in the case fixed to the device. Although this can be suppressed, it takes time to cure the resin filled at the time of assembly, and there is a problem that the production efficiency is low.
  • the present invention has been made in view of such circumstances, and an object of the present invention is to provide a moving body detection apparatus with high production efficiency without causing a decrease in detection accuracy due to vibration or the like.
  • the mobile object detection apparatus of the present invention is 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 to which the magnetic detection element, the magnet and the lead terminal are attached on one side; A second housing that is fitted and connected to cover the one side of the first housing and is disposed to face the detected body; The first housing is provided with a fixing portion for fixing and installing on a fixing target, and a part of the lead terminal is embedded and integrated. It is characterized by that.
  • the front-rear direction is the X direction
  • the left-right direction is the Y direction
  • the up-down direction is the Z direction, based on the state of the moving body detection device 100 shown in FIG.
  • the direction in which the arrows indicating the X direction, the Y direction, and the Z direction are directed will be described as a + (plus) direction
  • the opposite direction will be described as a-(minus) direction.
  • a moving body detection apparatus 100 includes a magnetic detection element 10 that outputs an electrical signal corresponding to the movement of an object to be detected, a magnet 20 that applies a magnetic field to the magnetic detection element 10, and a lead connected to the magnetic detection element 10.
  • the terminal 30, 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 fitting are connected to cover one side of the first housing 40, and face the object to be detected.
  • the first housing 40 is provided with a fixing portion 42 for fixing and mounting on the fixing object 70, and a part of the lead terminal 30 is embedded and integrated. Configured.
  • the moving body detection apparatus 100 is configured, for example, as a rotation detection apparatus provided in the vicinity of the axle of the front wheel of a two-wheeled vehicle, and measures the vehicle speed from the detected rotation speed 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.
  • the magnetic detection element 10 is configured by a Hall IC that senses a change in magnetic field accompanying the movement of a moving body that is a detection target.
  • the magnetic detection element 10 is provided with a terminal 10b protruding 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.
  • 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).
  • 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.
  • the first housing 40 is formed concentrically at the center part of a small arc part of the main body part 41 and the main body part 41 having a substantially oval outer shape connecting two large and small arc parts.
  • the fixing portion 42, the housing portion 43 integrally formed by protruding forward (+ X direction) from the center of the large arc portion of the main body portion 41, and protruding rearward ( ⁇ X direction) from the large arc portion of the main body portion 41.
  • 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.
  • PBT polybutylene terephthalate
  • 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.
  • 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.
  • 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.
  • the accommodating portion 43 protrudes forward through the cylindrical portion 43c to the front side of the bottom plate portion 41b of the main body portion 41 and is integrally formed of 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.
  • 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.
  • the connector portion 44 is formed in a hollow square tube shape and has a rear ( ⁇ X direction) opening.
  • the connector portion 44 protrudes rearward from the bottom plate portion 41b of the main body portion 41 and is integrally formed. (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.
  • the second housing 50 includes a cylindrical portion 51 having a bottom, which is fitted and connected to cover one side (front side (+ X direction)) of the first housing 40 and is disposed to face the detection target. And a flange portion 52 formed integrally with the opening end of 51.
  • 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.
  • PBT polybutylene terephthalate
  • 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.
  • 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.
  • the rib 51 a has a function as an invitation when attaching the O-ring 53 and an invitation when attaching the moving object detection device 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. 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.
  • 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.
  • a connection holding mechanism 60 that holds the fitting connection state is provided.
  • four engagement recesses 61 are formed as substantially rectangular holes in the side wall 41a.
  • 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.
  • 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.
  • 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.
  • 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.
  • an O-ring 53 is mounted in the O-ring groove 51 b of the second housing 50.
  • 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.
  • 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).
  • 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
  • the first housing 40 is fixed to the fixed object 70.
  • 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.
  • 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.
  • 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 housed 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 target and the vibration of the moving object detection device 100 are detected. The system is the same. As a result, in the conventional apparatus, the second housing 50 is fixed to the fixed object on the device side, and the first housing 40 is connected to the second housing 50.
  • 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.
  • 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.
  • the magnetic detection element 10 and the magnet 20 are accommodated in the second housing 50 and filled with resin to be cured.
  • 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.
  • 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.
  • 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.
  • 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
  • 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
  • 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.
  • 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.
  • 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.
  • 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.
  • the case where the moving object detection device 100 is used as the rotation detection device to detect the object to be detected is described as an example.
  • the present invention is not limited to this. It may be.
  • the case where the magnetic detection element 10 is configured by a Hall IC has been described as an example, the magnetic detection element 10 is not limited to this, and may be any other type.
  • materials for the first housing 40 and the second housing 50 are not particularly limited, and commonly used synthetic resins can be used.
  • 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.
  • the present invention is not limited to the above embodiment.

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

Abstract

L'invention concerne un dispositif de détection de corps mobile qui assure un rendement de production élevé sans provoquer de détérioration de la précision de détection due à des vibrations, etc. Ledit dispositif de détection de corps mobile (100) comprend : un élément de détection de magnétisme (10) permettant de délivrer un signal électrique en fonction du mouvement d'un objet à détecter ; un aimant (20) permettant de transmettre un champ magnétique à l'élément de détection de magnétisme (10) ; une borne conductrice (30) raccordée à l'élément de détection de magnétisme (10) ; un premier boîtier (40), sur un côté duquel l'élément de détection de magnétisme (10), l'aimant (20) et la borne conductrice (30) sont montés ; et un second boîtier (50) qui est ajusté et raccordé au premier boîtier (40) de façon à recouvrir un côté de celui-ci et qui est disposé de façon à faire face à l'objet à détecter, le premier boîtier (40) étant pourvu d'une partie de fixation (42) destinée à être fixée à un objet de fixation (70), et comportant dans celle-ci une partie de la borne conductrice (30) intégrée d'un seul tenant.
PCT/JP2017/043567 2016-12-15 2017-12-05 Dispositif de détection de corps mobile WO2018110360A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201780076664.8A CN110062887B (zh) 2016-12-15 2017-12-05 移动体检测装置
JP2018556595A JP7031607B2 (ja) 2016-12-15 2017-12-05 移動体検出装置
JP2022017708A JP7256974B2 (ja) 2016-12-15 2022-02-08 移動体検出装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016243275 2016-12-15
JP2016-243275 2016-12-15

Publications (1)

Publication Number Publication Date
WO2018110360A1 true WO2018110360A1 (fr) 2018-06-21

Family

ID=62559014

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/043567 WO2018110360A1 (fr) 2016-12-15 2017-12-05 Dispositif de détection de corps mobile

Country Status (3)

Country Link
JP (2) JP7031607B2 (fr)
CN (1) CN110062887B (fr)
WO (1) WO2018110360A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03108667A (ja) * 1989-09-22 1991-05-08 Nippondenso Co Ltd 回転位置検出器
JPH0694746A (ja) * 1992-09-10 1994-04-08 Sumitomo Electric Ind Ltd センサ装置及びそのセンサ装置を用いた回転センサ
WO1995010055A1 (fr) * 1993-10-06 1995-04-13 Kelsey-Hayes Company Detecteur de vitesse a reluctance variable faisant partie d'un ensemble
WO1997004318A1 (fr) * 1995-07-21 1997-02-06 Matsushita Electric Industrial Co., Ltd. Capteur de vitesse de rotation magnetique
WO2005085875A1 (fr) * 2004-03-06 2005-09-15 Robert Bosch Gmbh Capteur de mouvement et procede de realisation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0694747A (ja) * 1992-09-10 1994-04-08 Sumitomo Electric Ind Ltd センサ装置及びそのセンサ装置を用いた回転センサ
JP3309594B2 (ja) * 1994-11-04 2002-07-29 日本精工株式会社 回転速度検出装置付転がり軸受ユニット
JP4085078B2 (ja) * 2004-07-20 2008-04-30 住電エレクトロニクス株式会社 回転検出センサ
JP5146901B2 (ja) 2006-12-28 2013-02-20 日本精機株式会社 回転検出装置
DE102011004447A1 (de) * 2011-02-21 2012-08-23 Robert Bosch Gmbh Sensoreinheit für ein Fahrzeug

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03108667A (ja) * 1989-09-22 1991-05-08 Nippondenso Co Ltd 回転位置検出器
JPH0694746A (ja) * 1992-09-10 1994-04-08 Sumitomo Electric Ind Ltd センサ装置及びそのセンサ装置を用いた回転センサ
WO1995010055A1 (fr) * 1993-10-06 1995-04-13 Kelsey-Hayes Company Detecteur de vitesse a reluctance variable faisant partie d'un ensemble
WO1997004318A1 (fr) * 1995-07-21 1997-02-06 Matsushita Electric Industrial Co., Ltd. Capteur de vitesse de rotation magnetique
WO2005085875A1 (fr) * 2004-03-06 2005-09-15 Robert Bosch Gmbh Capteur de mouvement et procede de realisation

Also Published As

Publication number Publication date
CN110062887B (zh) 2021-10-15
JP7031607B2 (ja) 2022-03-08
JP7256974B2 (ja) 2023-04-13
JP2022062204A (ja) 2022-04-19
CN110062887A (zh) 2019-07-26
JPWO2018110360A1 (ja) 2019-10-24

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