JP2008164438A - Rotation detector - Google Patents

Rotation detector Download PDF

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JP2008164438A
JP2008164438A JP2006354403A JP2006354403A JP2008164438A JP 2008164438 A JP2008164438 A JP 2008164438A JP 2006354403 A JP2006354403 A JP 2006354403A JP 2006354403 A JP2006354403 A JP 2006354403A JP 2008164438 A JP2008164438 A JP 2008164438A
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outer case
case
storage space
opening
detection means
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JP2008164438A5 (en
JP5035746B2 (en
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Junichi Ando
純一 安藤
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Priority to PCT/JP2007/073991 priority patent/WO2008081693A1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/02—Housings
    • G01P1/026—Housings for speed measuring devices, e.g. pulse generator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/245—Housings for sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/147—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotation detector capable of easily injecting a filling material to a storage space in an injecting process of the filling material. <P>SOLUTION: This rotation detector A comprises an intermediate case 3 having at least a magnet 11 and a magnetism detecting means 12, an outer case 4 having the storage space S for storing the intermediate case 3, and the filling material 5 for airtightly sealing the storage space S. The rotation detector further comprises a plurality of lead terminals 7 that are disposed in the intermediate case 3 and are used for power supply to the magnetism detecting means 12 and for signal output from the magnetism detecting means 12, and a connector section 8 that electrically connects each lead terminal 7 to external equipment and is disposed integrally with the intermediate case 3 in a state where the engaging direction to the external equipment matches with the opening 9 direction of the storage space S. The intermediate case 3 is arranged in the storage space S of the outer case 4 so that the center 8a of the connector section 8 varies with respect to the center 4c of the outer case 4 and the opening 9 of the outer case 4 is exposed from the connector section 8 in the view from the opening 9 direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、磁石と磁気検出手段とを少なくとも備えた中ケースと、前記中ケースを収納する収納空間を備えた外ケースと、前記収納空間に配設される充填部材とを備えた回転検出装置に関するものである。   The present invention relates to a rotation detection device including an intermediate case including at least a magnet and magnetic detection means, an outer case including a storage space for storing the intermediate case, and a filling member disposed in the storage space. It is about.

従来の回転検出装置は、特許文献１に開示されているものがある。この回転検出装置は、磁石と磁気検出手段とを少なくとも備えた中ケースと、中ケースを収納する収納空間を備えた外ケースと、収納空間を気密的に封止する充填部材であるポッティング剤とを備えたものである。このような回転検出器の中ケースには、外部機器との接続用のコネクタ部が一体に備えられ、エンジンやトランスミッション等の被取付部への取付け構造によって、外ケースの収納空間の開口方向とコネクタとの勘合方向が一致する場合があった。
特開２００４−３５４３１２号公報 A conventional rotation detection device is disclosed in Patent Document 1. The rotation detection device includes an inner case including at least a magnet and magnetic detection means, an outer case including a storage space for storing the intermediate case, and a potting agent that is a filling member that hermetically seals the storage space. It is equipped with. The inner case of such a rotation detector is integrally provided with a connector part for connection with an external device, and the opening structure of the storage space of the outer case depends on the attachment structure to the attached part such as an engine or transmission. In some cases, the mating direction with the connector matches.
JP 2004-354212 A

しかしながら、従来の回転検出装置は、外ケースの収納空間の開口をコネクタ部分で覆い、収納空間へのポッティング剤の注入工程において、ポッティング剤の注入装置のノズルを収納空間に対して真上から挿入することが出来ず、自動化がしづらいばかりでなく、３アクション（Ｘ−Ｙ−Ｚロボット）の自動化設備を必要とすることから、設備費があがり、結果的に製造コストを高くしてしまうといった問題点を有している。   However, in the conventional rotation detection device, the opening of the storage space of the outer case is covered with the connector part, and the nozzle of the potting agent injection device is inserted into the storage space from directly above in the step of injecting the potting agent into the storage space. Not only is difficult to automate, but also requires 3 action (XYZ robot) automation equipment, which increases equipment costs and consequently increases manufacturing costs. Has a problem.

そこで、本発明は、前述した問題点に着目し、充填部材注入工程において収納空間へ充填部材を容易に注入することが可能な回転検出装置を提供することを目的とする。   Therefore, the present invention focuses on the above-described problems, and an object thereof is to provide a rotation detection device capable of easily injecting a filling member into a storage space in a filling member injection step.

本発明では、請求項１に記載のように、磁石と磁気検出手段とを少なくとも備えた中ケースと、前記中ケースを収納する収納空間を備えた外ケースと、前記収納空間を気密的に封止する充填部材とを備えた回転検出装置であって、前記中ケースに設けられ、前記磁気検出手段への電力供給用及び前記磁気検出手段からの信号出力用の複数のリード端子と、前記各リード端子を外部機器と電気的に接続させ、前記外部機器との嵌合方向を前記収納空間の開口方向と一致した状態で前記中ケースと一体に設けられるコネクタ部とを備え、前記中ケースは前記コネクタ部の中心が前記外ケースの中心に対して変位し、前記開口方向から見た場合に前記外ケースの開口が前記コネクタ部から露出した状態となるように、前記外ケースの前記収納空間に配設されてなるものである。   According to the present invention, as described in claim 1, an inner case having at least a magnet and a magnetic detection means, an outer case having a storage space for storing the intermediate case, and the storage space are hermetically sealed. A rotation detecting device having a filling member to stop, a plurality of lead terminals provided in the middle case, for supplying power to the magnetic detection means and for outputting signals from the magnetic detection means, A lead terminal electrically connected to an external device, and a connector portion provided integrally with the middle case in a state in which a fitting direction with the external device coincides with an opening direction of the storage space, The storage space of the outer case such that the center of the connector portion is displaced with respect to the center of the outer case and the opening of the outer case is exposed from the connector portion when viewed from the opening direction. In Is made is set.

また、請求項２に記載のように、前記外ケースは、被取付体に取付けるための取付部を備え、前記取付部は、前記コネクタ部の変位した方向に一致しない状態で設けられてなるものである。   According to a second aspect of the present invention, the outer case includes a mounting portion for mounting on the mounted body, and the mounting portion is provided in a state that does not coincide with the displaced direction of the connector portion. It is.

また、請求項３に記載のように、前記外ケースに設けられる第一の位置決め部と、前記中ケースに設けられる第二の位置決め部とを備え、前記第一の位置決め部と前記第二の位置決め部とを合わせた状態で前記中ケースを前記外ケースに対して配設してなるものである。   According to a third aspect of the present invention, the first positioning portion provided in the outer case and the second positioning portion provided in the middle case are provided, and the first positioning portion and the second positioning portion are provided. The middle case is disposed with respect to the outer case in a state where the positioning portion is combined.

以上、本発明によれば、所期の目的を達成することができ、充填部材注入工程において収納空間へ充填部材を容易に注入することが可能な回転検出装置を提供することができる。   As described above, according to the present invention, it is possible to provide a rotation detection device that can achieve the intended purpose and can easily inject the filling member into the storage space in the filling member injection step.

本発明の請求項１に記載による回転検出装置Ａは、磁石１１と磁気検出手段１２とを少なくとも備えた中ケース３と、中ケース３を収納する収納空間Ｓを備えた外ケース４と、収納空間Ｓを気密的に封止する充填部材５とを備えた回転検出装置Ａであって、中ケース３に設けられ、磁気検出手段１２への電力供給用及び磁気検出手段１２からの信号出力用の複数のリード端子７と、各リード端子７を外部機器と電気的に接続させ、前記外部機器との嵌合方向を収納空間Ｓの開口９方向と一致した状態で中ケース３と一体に設けられるコネクタ部８とを備え、中ケース３はコネクタ部８の中心８ａが外ケース４の中心４ｃに対して変位し、開口９方向から見た場合に外ケース４の開口９がコネクタ部８から露出した状態となるように、外ケース４の収納空間Ｓに配設されてなるものである。このように構成することにより、中ケース３のコネクタ部８の中心８ａが外ケース４の中心４ｃに対して変位した状態で外ケース４の収納空間Ｓに配設されているため、充填部材注入工程において、充填ノズルを収納空間Ｓに対して真上から挿入することができることから充填部材５を容易に注入することができる。また、充填ノズルを水平方向や斜め方向に配設する必要が無いことから、充填ノズル内の充填部材詰りの発生を抑制することができ、しかも、充填ノズルを上下方向に移動させる自動化設備で十分で、３アクションの高価な自動化設備が不要であることから、製造コストを低く抑えることができる。   The rotation detection device A according to claim 1 of the present invention includes an intermediate case 3 having at least a magnet 11 and magnetic detection means 12, an outer case 4 having a storage space S for storing the intermediate case 3, and a storage. A rotation detection device A including a filling member 5 that hermetically seals the space S, which is provided in the middle case 3 for supplying power to the magnetic detection means 12 and for outputting signals from the magnetic detection means 12 The lead terminals 7 and the lead terminals 7 are electrically connected to an external device, and are integrally provided with the middle case 3 in a state in which the fitting direction with the external device coincides with the direction of the opening 9 of the storage space S. The middle case 3 is displaced from the center 4c of the outer case 4 so that the opening 9 of the outer case 4 is removed from the connector part 8 when viewed from the direction of the opening 9. The outer case so that it is exposed Is made is disposed in the accommodating space S. With this configuration, since the center 8a of the connector portion 8 of the middle case 3 is disposed in the storage space S of the outer case 4 in a state of being displaced with respect to the center 4c of the outer case 4, the filling member injection In the process, since the filling nozzle can be inserted into the storage space S from directly above, the filling member 5 can be easily injected. In addition, since there is no need to arrange the filling nozzle in a horizontal direction or an oblique direction, the occurrence of clogging of the filling member in the filling nozzle can be suppressed, and an automated facility that moves the filling nozzle in the vertical direction is sufficient. Thus, since the expensive automation equipment of 3 actions is unnecessary, the manufacturing cost can be kept low.

また、請求項２に記載の発明によれば、外ケース４は、被取付体に取付けるための取付部４２を備え、取付部４２は、コネクタ部８の変位した方向に一致しない状態で設けられてなるものである。このように構成することにより、被取付体に取付けるための取付部４２をコネクタ部８の変位した方向に一致しない状態で外ケース４に設けることから、回転検出装置Ａの被取付体への取り付け方向と、コネクタ部８との接続方向とを異なわせることができるため、回転検出装置Ａの車両等への取り付け作業において、作業性を向上させることができる。   According to the second aspect of the present invention, the outer case 4 includes the mounting portion 42 for mounting on the mounted body, and the mounting portion 42 is provided in a state that does not coincide with the displaced direction of the connector portion 8. It will be. With this configuration, the attachment portion 42 for attachment to the attachment body is provided in the outer case 4 in a state that does not coincide with the displaced direction of the connector portion 8, so that the rotation detector A can be attached to the attachment body. Since the direction and the connection direction with the connector part 8 can be made different, workability | operativity can be improved in the attachment operation | work to the vehicle etc. of the rotation detection apparatus A. FIG.

また、請求項３に記載の発明によれば、外ケース４に設けられる第一の位置決め４３部と、中ケース３に設けられる第二の位置決め部３２ｂとを備え、第一の位置決め部４３と第二の位置決め部３２ｂとを合わせた状態で中ケース３を外ケース４に対して配設してなるものである。このように構成することにより、第一の位置決め部４３と第二の位置決め部３２ｂとを、外ケース４及び中ケース３に形成し、第一の位置決め部４３と第二の位置決め部３２ｂとを合わせた状態で中ケース３を外ケース４に対して配設してなることから、外ケース４に対する中ケース３の配設方向の誤組みを抑えることができる。   Further, according to the invention described in claim 3, the first positioning portion 43 provided in the outer case 4 and the second positioning portion 32 b provided in the middle case 3 are provided. The middle case 3 is disposed with respect to the outer case 4 in a state where the second positioning portion 32b is combined. By comprising in this way, the 1st positioning part 43 and the 2nd positioning part 32b are formed in the outer case 4 and the inner case 3, and the 1st positioning part 43 and the 2nd positioning part 32b are formed. Since the middle case 3 is disposed with respect to the outer case 4 in a combined state, it is possible to suppress erroneous assembly of the middle case 3 with respect to the outer case 4.

以下、本発明の回転検出装置Ａについて例を挙げ添付図面を用いて説明する。   Hereinafter, an example of the rotation detection device A of the present invention will be described with reference to the accompanying drawings.

図１から図８を用いて、本発明の第１実施例の回転検出装置Ａについて説明する。回転検出装置Ａは、磁気ヘッド１と、回路基板２と、中ケース３と外ケース４と、充填部材５と、から主に構成されている。   A rotation detection apparatus A according to a first embodiment of the present invention will be described with reference to FIGS. The rotation detection device A mainly includes a magnetic head 1, a circuit board 2, an intermediate case 3, an outer case 4, and a filling member 5.

磁気ヘッド１は、磁石１１と、磁気検出手段１２とから構成されるものである。磁石１１は、円筒形状をなしている。磁気検出手段１２は、合成樹脂からなるハウジング内にホールＩＣや磁気抵抗素子（ＭＲ素子）等を内蔵したものであり、磁石１１が発する磁気の変化を検出するもので、磁石１１と接するように配設される。   The magnetic head 1 is composed of a magnet 11 and magnetic detection means 12. The magnet 11 has a cylindrical shape. The magnetism detecting means 12 is a housing in which a Hall IC, a magnetoresistive element (MR element) or the like is built in a housing made of a synthetic resin, detects a change in magnetism generated by the magnet 11 and is in contact with the magnet 11. Arranged.

回転基板２は、ガラス布基材エポキシ樹脂やセラミック等の絶縁基板に所定の配線パターンが形成されてなる硬質回路基板である。なお、硬質の回路基板の他に、可撓性材料に所定の配線パターンが形成されてなるフレキシブル回路基板（ＦＰＣ）が適用できる。回路基板２は、磁気検出手段１２へのノイズ吸収用コンデンサや信号増幅回路等の各種電子部品（図示しない）が実装されている。回路基板２の一端側には、磁気検出手段２の略Ｌ字状に折り曲げ形成されたリード１２ａが半田等を介して電気的に接続され、また他端側には、後述するリード端子が半田等を介して電気的に接続されている。従って、磁気検出手段２により検出された検出信号は、回路基板２から前記リード端子に伝わり外部に取り出されることになる。   The rotating substrate 2 is a hard circuit substrate in which a predetermined wiring pattern is formed on an insulating substrate such as a glass cloth base epoxy resin or ceramic. In addition to a hard circuit board, a flexible circuit board (FPC) in which a predetermined wiring pattern is formed on a flexible material can be applied. On the circuit board 2, various electronic components (not shown) such as a noise absorbing capacitor and a signal amplifier circuit are mounted on the magnetic detection means 12. A lead 12a bent in a substantially L shape of the magnetic detection means 2 is electrically connected to one end side of the circuit board 2 via solder or the like, and a lead terminal described later is soldered to the other end side. Etc. are electrically connected to each other. Therefore, the detection signal detected by the magnetic detection means 2 is transmitted from the circuit board 2 to the lead terminal and taken out to the outside.

中ケース３は、ＳＰＳ，ＰＢＴ及びＰＰＳ等の合成樹脂材料が適用でき、図４や図７で示すように、ヘッド部３１と、ボディ部３２と、取付部３３を一体に備えている。   A synthetic resin material such as SPS, PBT, and PPS can be applied to the middle case 3, and as shown in FIGS. 4 and 7, the head portion 31, the body portion 32, and the mounting portion 33 are integrally provided.

ヘッド部３１には、磁石１１と磁気検出手段１２とが中ケース３の先端面側に設けられ、ヘッド部３１とボディ部３２との一部に回路基板２を配設するための載置部３１ｃが設けられている。なお、回路基板２は、外ケース４に当接しない位置に設けられる。また、ヘッド部３１には、磁気検出手段１２および磁石１１の側面の一部を開口するとともに、磁石１１の裏面側の一部を溝形状にしてなる切り欠き部３１ａが形成されている。   In the head portion 31, the magnet 11 and the magnetic detection means 12 are provided on the front end surface side of the middle case 3, and a mounting portion for disposing the circuit board 2 on a part of the head portion 31 and the body portion 32. 31c is provided. The circuit board 2 is provided at a position where it does not contact the outer case 4. In addition, the head portion 31 is formed with a notch 31 a that opens part of the side surfaces of the magnetic detection means 12 and the magnet 11 and that forms a part of the back side of the magnet 11 in a groove shape.

ボディ部３２には、導電性材料から形成されるリード端子７がインサート成形されており、一端にはコネクタ部８が一体に設けられている。リード端子７は、磁気検出手段１２への電力供給用及び磁気検出手段１２からの信号出力用に複数設けられている。そして、リード端子７は、一端がコネクタ部８において外部に突出し、他端が回路基板２と電気的に接続できるように引き出されている。コネクタ部８は、各リード端子７を外部機器と電気的に接続させ、前記外部機器との嵌合方向を後述する外ケース４の収納空間の開口方向と一致している。   A lead terminal 7 made of a conductive material is insert-molded in the body portion 32, and a connector portion 8 is integrally provided at one end. A plurality of lead terminals 7 are provided for supplying power to the magnetic detection means 12 and for outputting signals from the magnetic detection means 12. The lead terminal 7 is drawn out so that one end protrudes to the outside at the connector portion 8 and the other end can be electrically connected to the circuit board 2. The connector portion 8 electrically connects each lead terminal 7 to an external device, and the fitting direction with the external device coincides with the opening direction of the storage space of the outer case 4 described later.

また、ボディ部３２は、図３で示すように、外ケース４から露出する部分に、外ケース４に収納される部分から右方向に直角に折れ曲がってから再び図３中上方向に直角に折れ曲がっている屈曲部３２ａ。このように構成したことによって、コネクタ部８の中心８ａが後述する外ケース４の中心４ｃに対して変位している。すなわち、図２に示すように、コネクタ部８の中心８ａが外ケース４、特に、収納空間Ｓの開口９の中心９ａに対して上方向に変位している。   Further, as shown in FIG. 3, the body portion 32 is bent at a right angle from the portion stored in the outer case 4 to the right exposed from the portion accommodated in the outer case 4, and is then bent at a right angle upward in FIG. 3 again. Bending portion 32a. With this configuration, the center 8a of the connector portion 8 is displaced with respect to the center 4c of the outer case 4 described later. That is, as shown in FIG. 2, the center 8 a of the connector portion 8 is displaced upward with respect to the outer case 4, in particular, the center 9 a of the opening 9 of the storage space S.

また、中ケース３には、中ケース３と外ケース４とを組み付けるときの第２の位置決め部３２ｂを備えている。この第２の位置決め部３２ｂは、中ケース３のボディ部３２に設けられており、本実施例では、図１中下向きの三角形である。   Further, the middle case 3 is provided with a second positioning portion 32b when the middle case 3 and the outer case 4 are assembled. The second positioning portion 32b is provided in the body portion 32 of the middle case 3, and in the present embodiment, is a downward triangle in FIG.

取付部３３は、中ケース３のヘッド部３１側の側部（外周部）において、回路基板２が配設される載置部３１ｃと別の箇所に設けられており、突出する平板形状のものが２つ形成されてなる。   The mounting portion 33 is provided on a side portion (outer peripheral portion) on the head portion 31 side of the middle case 3 at a location different from the placement portion 31c on which the circuit board 2 is disposed, and has a flat plate shape that protrudes. Are formed.

外ケース４は、中ケース３と同様な合成樹脂材料を適用することができ、長手方向の断面形状が略コの字状をなして一端に開口９を有し、他方に底部４ａを有する円筒状からなり、磁気ヘッド１および回路基板２を収納する収納空間Ｓを構成する。外ケース４は、磁気検出手段１２に対向して当接する底部４ａが回転検出装置Ａの検出面となる。   A synthetic resin material similar to that of the inner case 3 can be applied to the outer case 4. The outer case 4 has a substantially U-shaped cross section in the longitudinal direction and has an opening 9 at one end and a bottom 4 a at the other end. A storage space S for storing the magnetic head 1 and the circuit board 2 is formed. In the outer case 4, a bottom portion 4 a that contacts and faces the magnetic detection means 12 serves as a detection surface of the rotation detection device A.

また、外ケース４の内壁部には、図５，図６に示すように中ケース３の取付部３３の形状に対応した溝形状の位置決め保持部４１が形成されている。位置決め保持部４１には、取付部３３の当接部分に変形可能なリブ（圧入用の突出部）４１ａが形成されている。また、保持部４１の外ケース４の開口９側には、開口９側が幅広となる斜め形状のガイド部４１ｂが位置決め保持部４１に連続して形成され、取付部３３を位置決め保持部４１の溝部分に誘い込むことができる。また、外ケース４は、図４に示すように、回転検出装置Ａ全体を所望の配設位置に固定するための取付部４２を設けている。取付部４２は、コネクタ部８の変位した方向とは、一致しない異なる方向に突出形成されている。取付部４２は、取付用の孔部４２ａを有する金属材料からなるカラー４２ｂがインサート成形されている。   Further, as shown in FIGS. 5 and 6, a groove-shaped positioning holding portion 41 corresponding to the shape of the mounting portion 33 of the intermediate case 3 is formed on the inner wall portion of the outer case 4. The positioning holding portion 41 is formed with a deformable rib (press-fit protrusion) 41 a at the contact portion of the mounting portion 33. In addition, on the opening 9 side of the outer case 4 of the holding portion 41, an inclined guide portion 41 b having a wide opening 9 side is formed continuously with the positioning holding portion 41, and the mounting portion 33 is formed in the groove of the positioning holding portion 41. You can lure into the part. Further, as shown in FIG. 4, the outer case 4 is provided with a mounting portion 42 for fixing the entire rotation detection device A at a desired arrangement position. The attachment portion 42 is formed so as to protrude in a direction different from the direction in which the connector portion 8 is displaced. The mounting portion 42 is insert-molded with a collar 42b made of a metal material having a mounting hole 42a.

また、外ケース４には、中ケース３と外ケース４とを組み付けるときの第１の位置決め部４３を備えている。この第１の位置決め部４３は、外ケース４の外周で、開口９側に設けられており、本実施例では、図１中上向きの三角形である。そして、この第一の位置決め部４３と中ケース３の第二の位置決め部３２ｂとを合わせた状態で中ケース３を外ケース４に対して配設するものである。   Further, the outer case 4 includes a first positioning portion 43 when the middle case 3 and the outer case 4 are assembled. The first positioning portion 43 is provided on the opening 9 side on the outer periphery of the outer case 4, and in the present embodiment, is an upward triangle in FIG. 1. The middle case 3 is disposed with respect to the outer case 4 in a state where the first positioning portion 43 and the second positioning portion 32b of the middle case 3 are combined.

充填部材５は、やや流動性のあるエポキシ樹脂やシリコーン樹脂が適用でき、外ケース４と中ケース３との隙間となる収納空間Ｓに充填される。充填部材５は、外ケース４と中ケース３とを組み付けた状態で、開口９から注入され、底部４ａ側から充填され、少なくとも取付部３３と位置決め保持部４１との当接箇所や磁気ヘッド１と回路基板２とを配設したヘッド部３１を埋設する位置まで注入される。   The filling member 5 can be applied with a somewhat fluid epoxy resin or silicone resin, and is filled in the storage space S that becomes a gap between the outer case 4 and the middle case 3. The filling member 5 is injected from the opening 9 in a state in which the outer case 4 and the middle case 3 are assembled, and is filled from the bottom 4a side. At least the contact portion between the mounting portion 33 and the positioning holding portion 41 and the magnetic head 1 are filled. And the circuit board 2 are injected up to a position where the head portion 31 is embedded.

なお、充填部材５が注入される際には、本実施例の回転検出装置Ａは、コネクタ部８の中心８ａが外ケース４の中心４ｃ、本実施例では、収納空間Ｓの開口９の中心９ａに対して変位し、開口９方向から見た場合に外ケース４の開口９がコネクタ部８から露出した状態となっているので、収納空間Ｓへの充填部材の注入工程において、外ケース４の開口９がコネクタ部分８で覆われていない部分から充填部材の注入装置のノズルを収納空間Ｓに対して真上から挿入することが出来き、３アクション（Ｘ−Ｙ−Ｚロボット）の自動化設備を必要とすることがなく、設備費を抑え、結果的に製造コストを低くすることが可能となる。   When the filling member 5 is injected, the rotation detection device A of the present embodiment has the center 8a of the connector portion 8 as the center 4c of the outer case 4, and in this embodiment, the center of the opening 9 of the storage space S. Since the opening 9 of the outer case 4 is exposed from the connector portion 8 when viewed from the direction of the opening 9 when viewed from the direction of the opening 9, in the step of injecting the filling member into the storage space S, the outer case 4 The nozzle of the filling member injection device can be inserted into the storage space S from directly above the portion where the opening 9 is not covered with the connector portion 8, and automation of three actions (XYZ robot) Equipment is not required, equipment costs can be reduced, and as a result, manufacturing costs can be reduced.

そして、充填部材５が磁石１１及び磁気検出手段１２と中ケース３との隙間に入り込みながら気密状態をなしている。充填部材５は、充填された後に硬化することで、磁気ヘッド１や回路基板２の電子部品に対して、気密性を保持するとともに、固定保持することができ、耐振、耐寒、耐熱、耐水等の耐久性を向上するものである。   The filling member 5 is in an airtight state while entering the gap between the magnet 11 and the magnetic detection means 12 and the middle case 3. The filling member 5 is hardened after being filled, so that the airtightness can be held and fixedly held with respect to the electronic components of the magnetic head 1 and the circuit board 2, and vibration resistance, cold resistance, heat resistance, water resistance, etc. This improves the durability.

また、位置決め保持部４１は、外ケース４の収納空間Ｓ内に位置するように設けられることによって、取付部３３と位置決め保持部４１との隙間を充填部材５によって埋めることのできる構造となり、硬化した充填部材５によって外ケース４に対する中ケース３の強固な固定保持を行うことができるため、振動等による磁気ヘッド１の位置ずれを生じることなく、耐久性が高く検出精度の良好な回転検出装置Ａとなる。   In addition, the positioning holding portion 41 is provided so as to be positioned in the storage space S of the outer case 4, so that the gap between the attachment portion 33 and the positioning holding portion 41 can be filled with the filling member 5 and cured. Since the middle case 3 can be firmly fixed and held by the filled member 5 with respect to the outer case 4, the rotation detection device has high durability and good detection accuracy without causing positional deviation of the magnetic head 1 due to vibration or the like. A.

また、取付部３３または位置決め保持部４１の少なくとも一方には、取付部３３と位置決め保持部４１との当接箇所においてリブ４１ａが設けられてなることによって、圧入時のがたつきを防止することができ、充填部材５の充填時や硬化時までに安定状態を良好に保つことができるため、外ケース４に対して所望の位置に磁気ヘッド１を精度良く配設することができ、検出精度の良好な回転検出装置Ａとなる。   Further, at least one of the mounting portion 33 and the positioning holding portion 41 is provided with a rib 41a at a contact portion between the mounting portion 33 and the positioning holding portion 41, thereby preventing rattling during press-fitting. Since the stable state can be maintained well until the filling member 5 is filled or cured, the magnetic head 1 can be accurately arranged at a desired position with respect to the outer case 4, and the detection accuracy can be improved. The rotation detection device A is excellent.

なお、本発明の第１の実施例では、上述した回転検出装置Ａについて例に挙げて説明したが、本発明はこれに限定されるものではなく、外ケースによって囲まれる空間内に充填部材が充填される回転検出装置に適応されるものであればよい。   In the first embodiment of the present invention, the above-described rotation detection device A has been described as an example. However, the present invention is not limited to this, and a filling member is provided in a space surrounded by the outer case. What is necessary is just to be applicable to the rotation detection apparatus with which it is filled.

また、上述した第１の実施例では、中ケース３に取付部３３を設け、外ケース４に取付部３３に対応した位置決め保持部４１を設けたものを例に挙げて説明したが、本発明はこれに限定されるものではなく、例えば、外ケース４の内壁部に突出した平板状の取付部を設け、中ケース３の外周部に前記取付部を保持する位置決め保持部を設けた構成であってもよく、上述した実施の形態と同様な効果を得ることができる。   In the first embodiment described above, the middle case 3 is provided with the mounting portion 33 and the outer case 4 is provided with the positioning holding portion 41 corresponding to the mounting portion 33 as an example. However, the present invention is not limited to this. For example, a flat plate-like mounting portion that protrudes from the inner wall portion of the outer case 4 is provided, and a positioning holding portion that holds the mounting portion is provided on the outer peripheral portion of the middle case 3. It is possible to obtain the same effects as those of the above-described embodiment.

本発明の第１実施例の正面図。The front view of 1st Example of this invention. 同実施例の上面図。The top view of the Example. 同実施例の側面図。The side view of the Example. 図３中Ｂ−Ｂ線の断面図。Sectional drawing of the BB line in FIG. 図４中Ｃ−Ｃ線の断面図。Sectional drawing of CC line in FIG. 外ケースの断面図。Sectional drawing of an outer case. 中ケースの側面図。The side view of a middle case. 図７中Ｄ−Ｄ線の断面図。Sectional drawing of the DD line in FIG.

符号の説明Explanation of symbols

Ａ 回転検出装置
３ 中ケース
４ 外ケース
４ｃ，９ａ 中心
５ ポッティング剤（充填部材）
７ リード端子
８ コネクタ部
９ 開口
１１ 磁石
１２ 磁気検出手段
３２ｂ 第２の位置決め部
４２ 取付部
４３ 第１の位置決め部
Ｓ 収納空間 A rotation detection device 3 middle case 4 outer case 4c, 9a center 5 potting agent (filling member)
7 Lead terminal 8 Connector portion 9 Opening 11 Magnet 12 Magnetic detection means 32b Second positioning portion 42 Mounting portion 43 First positioning portion S Storage space

Claims (3)

磁石と磁気検出手段とを少なくとも備えた中ケースと、前記中ケースを収納する収納空間を備えた外ケースと、前記収納空間を気密的に封止する充填部材とを備えた回転検出装置であって、前記中ケースに設けられ、前記磁気検出手段への電力供給用及び前記磁気検出手段からの信号出力用の複数のリード端子と、前記各リード端子を外部機器と電気的に接続させ、前記外部機器との嵌合方向を前記収納空間の開口方向と一致した状態で前記中ケースと一体に設けられるコネクタ部とを備え、前記中ケースは前記コネクタ部の中心が前記外ケースの中心に対して変位し、前記開口方向から見た場合に前記外ケースの開口が前記コネクタ部から露出した状態となるように、前記外ケースの前記収納空間に配設されてなることを特徴とする回転検出装置。 A rotation detection apparatus comprising: an intermediate case including at least a magnet and magnetic detection means; an outer case including a storage space for storing the intermediate case; and a filling member for hermetically sealing the storage space. A plurality of lead terminals for supplying power to the magnetic detection means and for outputting signals from the magnetic detection means, and electrically connecting each lead terminal to an external device, A connector portion provided integrally with the middle case in a state in which a fitting direction with an external device coincides with an opening direction of the storage space, and the middle case has a center of the connector portion with respect to a center of the outer case. The rotation detector is disposed in the storage space of the outer case so that the opening of the outer case is exposed from the connector portion when viewed from the opening direction. Apparatus. 前記外ケースは、被取付体に取付けるための取付部を備え、前記取付部は、前記コネクタ部の変位した方向に一致しない状態で設けられてなることを特徴とする請求項１に記載の回転検出装置。 2. The rotation according to claim 1, wherein the outer case includes an attachment portion for attachment to a body to be attached, and the attachment portion is provided in a state that does not coincide with a displaced direction of the connector portion. Detection device. 前記外ケースに設けられる第一の位置決め部と、前記中ケースに設けられる第二の位置決め部とを備え、前記第一の位置決め部と前記第二の位置決め部とを合わせた状態で前記中ケースを前記外ケースに対して配設してなることを特徴とする請求項１に記載の回転検出装置。 A first positioning portion provided in the outer case; and a second positioning portion provided in the middle case, wherein the middle case is in a state in which the first positioning portion and the second positioning portion are combined. The rotation detection device according to claim 1, wherein the rotation detection device is arranged with respect to the outer case.
JP2006354403A 2006-12-28 2006-12-28 Rotation detector Active JP5035746B2 (en)

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JP2016212051A (en) * 2015-05-13 2016-12-15 ココリサーチ株式会社 Reversible rotation speed sensor and fixation installation method of the same
JP2017090385A (en) * 2015-11-16 2017-05-25 日本精機株式会社 Rotation detector

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JP5344375B2 (en) * 2009-09-30 2013-11-20 日本精機株式会社 Rotation angle detector
CN111983531B (en) * 2020-07-09 2023-03-10 桐庐科邦磁性材料有限公司 Magnet magnetizing detection device and detection method

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WO1997004318A1 (en) * 1995-07-21 1997-02-06 Matsushita Electric Industrial Co., Ltd. Magnetic rotational speed sensor
JP2005049095A (en) * 2003-05-30 2005-02-24 Nippon Seiki Co Ltd Magnetic sensor

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WO1997004318A1 (en) * 1995-07-21 1997-02-06 Matsushita Electric Industrial Co., Ltd. Magnetic rotational speed sensor
JP2005049095A (en) * 2003-05-30 2005-02-24 Nippon Seiki Co Ltd Magnetic sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016212051A (en) * 2015-05-13 2016-12-15 ココリサーチ株式会社 Reversible rotation speed sensor and fixation installation method of the same
JP2017090385A (en) * 2015-11-16 2017-05-25 日本精機株式会社 Rotation detector

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