JP2010256269A - Moving object detector - Google Patents

Moving object detector Download PDF

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Publication number
JP2010256269A
JP2010256269A JP2009108934A JP2009108934A JP2010256269A JP 2010256269 A JP2010256269 A JP 2010256269A JP 2009108934 A JP2009108934 A JP 2009108934A JP 2009108934 A JP2009108934 A JP 2009108934A JP 2010256269 A JP2010256269 A JP 2010256269A
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Prior art keywords
housing
cover
moving object
object detection
laser
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JP2009108934A
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Japanese (ja)
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Yuki Suyama
佑貴 須山
Hatsuo Hayakawa
肇夫 早川
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Nippon Seiki Co Ltd
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Nippon Seiki Co Ltd
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Priority to JP2009108934A priority Critical patent/JP2010256269A/en
Priority to PCT/JP2010/056731 priority patent/WO2010125920A1/en
Publication of JP2010256269A publication Critical patent/JP2010256269A/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
    • G01D1/00—Measuring arrangements giving results other than momentary value of variable, of general application
    • 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
    • G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable

Abstract

<P>PROBLEM TO BE SOLVED: To provide a moving object detector for simplifying manufacturing processes and reducing manufacturing costs without using an expensive laser welding apparatus or a large laser welding apparatus. <P>SOLUTION: The moving object detector 1 includes a housing 3 provided with a storage part 2, a cover 4 covering the storage part 2, and a detection means 5 in the storage part 2 for detecting a move of a detection object. The housing 3 consists of a light absorbent resin absorbing a laser beam. The cover 4 consists of a light transmissive resin transmitting the laser beam. The cover 4 includes a top board part 4a covering the storage part 2. The housing 3 includes an abutting part 8 abutting against the top board part 4a of the cover 4 around the storage part 2 and have the cover 4 welded to the abutting part 8 by laser. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、被検出体（歯車等）の移動を検出する移動物体検出装置に関するものである。   The present invention relates to a moving object detection device that detects the movement of an object to be detected (such as a gear).

従来、移動物体検出装置が種々提案されており、例えば特許文献１に開示されている。斯かる移動物体検出装置は、磁気変化を検出するセンシング部を備える検出部と、外部引出し用の端子を有するコネクタ部とが一体的に樹脂によって成型されたモールド成型体とを有するものである。   Conventionally, various moving object detection apparatuses have been proposed, and for example, disclosed in Patent Document 1. Such a moving object detection apparatus includes a detection unit including a sensing unit that detects a magnetic change, and a molded body in which a connector unit having a terminal for external drawing is integrally formed of resin.

この移動物体検出装置は、センシング部の露出された箇所を金属製のカバー体で覆い、このカバー体を加締め加工を施すことによって、カバー体をセンサ本体に固定する構造となっている。   This moving object detection device has a structure in which the exposed portion of the sensing unit is covered with a metal cover body, and the cover body is fixed to the sensor body by caulking the cover body.

しかしながら、このような移動物体検出装置は、カバー体の加締め加工が必要となり、製造工程を複雑であるだけでなく、製造コストが高いという問題を有していた。   However, such a moving object detection device has a problem that not only the manufacturing process is complicated but also the manufacturing cost is high because the cover body needs to be swaged.

この問題点を解決するものとして特許文献２に開示される移動物体検出装置が提案されている。   As a solution to this problem, a moving object detection device disclosed in Patent Document 2 has been proposed.

この移動物体検出装置は、円筒状のハウジングと、前記ハウジングの開口を蓋する円柱状のキャップ部とを備え、磁石と磁気検出素子とを前記ハウジング内に配置し、前記ハウジングの円筒内周面と前記キャップ部の円柱外周面の所定部分が、レーザ溶着されてなるものであった。   The moving object detection device includes a cylindrical housing and a columnar cap portion that covers the opening of the housing, and a magnet and a magnetic detection element are arranged in the housing, and the cylindrical inner peripheral surface of the housing And a predetermined portion of the outer peripheral surface of the cylinder of the cap portion was laser welded.

特開平１１−３２５９６１号公報Japanese Patent Laid-Open No. 11-325961 特開２００６−２７５６３９号公報JP 2006-275639 A

しかしながら、このような移動物体検出装置は、前記ハウジングの円筒内周面と前記キャップ部の円柱外周面の所定部分を、レーザ溶着するものであるため、レーザ照射部が円柱形状の移動物体検出装置の周囲を回るか、あるいは、前記移動物体検出装置を周囲からレーザ照射しなければならなかったため、高価なレーザ溶着装置、あるいは、大型のレーザ溶着装置を必要とし、製造コストが上昇するといった問題点があった。   However, since such a moving object detection device laser-welds a predetermined portion of the cylindrical inner peripheral surface of the housing and the cylindrical outer peripheral surface of the cap portion, the moving object detection device having a columnar laser irradiation unit is provided. Since the laser had to irradiate the surroundings of the object or the moving object detection device from the periphery, an expensive laser welding device or a large laser welding device was required, resulting in an increase in manufacturing cost. was there.

そこで、本発明は、前述した問題点に着目し、高価なレーザ溶着装置、あるいは、大型のレーザ溶着装置を用いることなく、かつ、製造工程を簡素化し、製造コストを低減することが可能な移動物体検出装置を提供するものである。   Accordingly, the present invention pays attention to the above-mentioned problems, and without using an expensive laser welding apparatus or a large-sized laser welding apparatus, the manufacturing process can be simplified and the manufacturing cost can be reduced. An object detection apparatus is provided.

本発明は前記目的を達成するため、収納部を備えたハウジングと、前記収納部を覆うカバーとを備え、前記収納部に被検出体の移動を検出する検出手段を配設した移動物体検出装置において、前記ハウジングをレーザ光を吸収する光吸収性樹脂から構成し、前記カバーを前記レーザ光を透過する光透過性樹脂から構成し、前記カバーは、前記収納部を覆う天板部を備え、前記ハウジングは、前記収納部の周囲で、かつ前記カバーの天板部に接する当接部を備え、前記天板部と前記当接部とをレーザ溶着したものである。   In order to achieve the above object, the present invention provides a moving object detection device including a housing having a storage portion and a cover that covers the storage portion, and a detection unit that detects the movement of the detection target is disposed in the storage portion. The housing is made of a light-absorbing resin that absorbs laser light, the cover is made of a light-transmitting resin that transmits the laser light, and the cover includes a top plate portion that covers the storage portion, The housing includes a contact portion around the storage portion and in contact with the top plate portion of the cover, and the top plate portion and the contact portion are laser-welded.

また、前記カバーは、前記天板部の周縁に前記ハウジングの外周面の一部を覆う周壁部を備え、前記ハウジングは、前記周壁部によって覆われている所定箇所に溝部を備え、前記溝部に封止部材を配設し、前記カバーは、前記ハウジングの前記溝部に配設された前記封止部材を前記周壁部によって圧縮したものである。   In addition, the cover includes a peripheral wall portion that covers a part of the outer peripheral surface of the housing at a peripheral edge of the top plate portion, and the housing includes a groove portion at a predetermined location covered by the peripheral wall portion, A sealing member is provided, and the cover is obtained by compressing the sealing member provided in the groove portion of the housing by the peripheral wall portion.

また、前記ハウジングは、前記当接部の内側に溝部を設け、前記溝部に封止部材を配設し、前記カバーは、前記ハウジングの前記溝部に配設された前記封止部材を圧縮したものである。   The housing is provided with a groove inside the contact portion, a sealing member is provided in the groove, and the cover is a compression of the sealing member provided in the groove of the housing. It is.

また、前記ハウジングは、前記当接部の外側に溝部を設け、前記溝部に封止部材を配設し、前記カバーは、前記ハウジングの前記溝部に配設された前記封止部材を圧縮したものである。   In addition, the housing has a groove portion outside the contact portion, a sealing member is disposed in the groove portion, and the cover is a compression of the sealing member disposed in the groove portion of the housing. It is.

また、前記カバーは、前記レーザ溶着された溶着痕を確認可能な色味と厚みを有するものである。   In addition, the cover has a color and thickness that allows confirmation of the laser-welded weld mark.

本発明によれば、所期の目的を達成でき、高価なレーザ溶着装置、あるいは、大型のレーザ溶着装置を用いることなく、かつ、製造工程を簡素化し、製造コストを低減することが可能な移動物体検出装置を提供することができる。     According to the present invention, it is possible to achieve the intended purpose, without using an expensive laser welding apparatus or a large laser welding apparatus, and simplifying the manufacturing process and reducing the manufacturing cost. An object detection device can be provided.

本発明の第１実施形態の移動物体検出装置の断面図。Sectional drawing of the moving object detection apparatus of 1st Embodiment of this invention. 本発明の第２実施形態の移動物体検出装置の断面図。Sectional drawing of the moving object detection apparatus of 2nd Embodiment of this invention.

本発明の第１実施形態の移動物体検出装置１を、図１を用いて説明する。移動物体検出装置１は、収納部２を備えたハウジング３と、収納部２を覆うカバー４とを備え、収納部２に被検出体の移動を検出する検出手段５を配設したものである。   A moving object detection apparatus 1 according to a first embodiment of the present invention will be described with reference to FIG. The moving object detection device 1 includes a housing 3 having a storage unit 2 and a cover 4 that covers the storage unit 2, and a detection unit 5 that detects the movement of the detection target is disposed in the storage unit 2. .

ハウジング３は、レーザ光を吸収する光吸収性樹脂からなり、外部引出し用の端子６を有するコネクタ部７を一体的に成型した構造体である。ハウジング３のコネクタ部７の反対側は、円柱形状であり、この円柱形状の端部３ａに凹部からなる収納部２を備えている。この収納部２に検出手段５が固定されている。また、ハウジング３は、端部３ａで、収納部２の周囲にカバー４の後述する天板部と接する当接部８を備えている。この当接部８は、環状で切れ目なく形成されている。   The housing 3 is made of a light-absorbing resin that absorbs laser light, and is a structure in which a connector portion 7 having terminals 6 for external drawing is integrally formed. The opposite side of the connector portion 7 of the housing 3 has a cylindrical shape, and the cylindrical end portion 3a is provided with a storage portion 2 formed of a concave portion. The detection means 5 is fixed to the storage portion 2. In addition, the housing 3 includes an abutting portion 8 that is in contact with a later-described top plate portion of the cover 4 around the storage portion 2 at the end portion 3a. The abutting portion 8 is annular and formed without a break.

また、ハウジング３の外周面３ｂには、二つの環状の溝部９、１０が形成されている。一方の溝部９は、円柱形状のハウジング３の外周面３ｂの収納部２（あるいは、当接部８）の近傍に、他方の溝部１０は、ハウジング３の中程に、それぞれ設けられている。そして、各々の溝部９、１０には、封止部材であるＯリング１１、１２が装着されている。   Two annular grooves 9 and 10 are formed on the outer peripheral surface 3 b of the housing 3. One groove portion 9 is provided in the vicinity of the housing portion 2 (or contact portion 8) of the outer peripheral surface 3 b of the cylindrical housing 3, and the other groove portion 10 is provided in the middle of the housing 3. Then, O-rings 11 and 12 as sealing members are attached to the respective groove portions 9 and 10.

カバー４は、レーザ光を透過する光透過性樹脂からなる成型された構造体である。本実施形態では、カバー４は、カップ形状であり、円盤形状の天板部４ａと、この天板部４ａから連続した円筒形状の周壁部４ｂとを備えている。天板部４ａが、収納部２を覆い、周壁部４ｂが、ハウジング３の円柱形状の外周面３ｂの一部を覆うものである。なお、周壁部４ｂは、Ｏリング１１を設けた溝部９を覆ってもいる。   The cover 4 is a molded structure made of a light transmissive resin that transmits laser light. In this embodiment, the cover 4 has a cup shape, and includes a disk-shaped top plate portion 4a and a cylindrical peripheral wall portion 4b continuous from the top plate portion 4a. The top plate portion 4 a covers the storage portion 2, and the peripheral wall portion 4 b covers a part of the cylindrical outer peripheral surface 3 b of the housing 3. The peripheral wall portion 4b also covers the groove portion 9 provided with the O-ring 11.

ハウジング３とカバー４とは、レーザ溶着によって固定されている。レーザが、カバー４を透過してハウジング３の当接部８とカバー４の天板部４ａとの接触部分に到達し、前記接触部分の温度を上げ、ハウジング３とカバー４を溶かして固定するものである。   The housing 3 and the cover 4 are fixed by laser welding. The laser passes through the cover 4 and reaches the contact portion between the contact portion 8 of the housing 3 and the top plate portion 4a of the cover 4, raises the temperature of the contact portion, and melts and fixes the housing 3 and the cover 4. Is.

ハウジング３とカバー４との接触部分は、同一平面上に存在するため、レーザ溶着時のレーザ照射を、同一平面上で行うことができる。従来のような、レーザ照射部が円柱形状の移動物体検出装置の周囲を回るか、あるいは、前記移動物体検出装置の周囲からレーザ照射する必要がなくなり、高価なレーザ溶着装置、あるいは、大型のレーザ溶着装置を必要とせず、製造コストの上昇を抑制することができる。   Since the contact part of the housing 3 and the cover 4 exists on the same plane, the laser irradiation at the time of laser welding can be performed on the same plane. There is no need for the laser irradiation unit to circulate around the cylindrical moving object detection device or to irradiate laser from the periphery of the moving object detection device, as in the past, and an expensive laser welding device or a large laser An increase in manufacturing cost can be suppressed without requiring a welding device.

なお、１３は、溶着痕であり、カバー４は、レーザ溶着された溶着痕を確認可能な色味と厚みであるので、溶着痕１３を確認することで、レーザ溶着後の溶着の良否を判定することができる。   Note that reference numeral 13 denotes a welding mark, and the cover 4 has a color and a thickness that allow the laser-welded welding mark to be confirmed. Therefore, the quality of the welding after laser welding is determined by checking the welding mark 13. can do.

また、カバー４は、ハウジング３の溝部９に配設されたＯリング１１を周壁部４ｂによって圧縮し、気密性を確保している。なお、ハウジング３とカバー４とのレーザ溶着が、気密性を確保するものであれば、Ｏリング１１を設ける必要はない。   Further, the cover 4 compresses the O-ring 11 disposed in the groove portion 9 of the housing 3 by the peripheral wall portion 4b to ensure airtightness. If the laser welding between the housing 3 and the cover 4 ensures airtightness, it is not necessary to provide the O-ring 11.

検出手段５は、センシング部１４、回路基板５ａ及び回路素子５ｂから構成されている。センシング部１４は、ホールＩＣ１４ａと磁石１４ｂとからなり、被検出体の回転を検出する。ホールＩＣ１４ａは、回路基板５ａの図１中下面に搭載され、カバー４に近接した状態にて配置される。ホールＩＣ１４ａは、被検出体の回転に伴う磁力の変化を電気信号に変換し、端子６の一端部６ａを介して外部に出力する。磁石１４ｂは、回路基板５ａの図１中上面に接着剤にて固定され、ホールＩＣ１４ａに磁場を与えるものである。   The detection means 5 includes a sensing unit 14, a circuit board 5a, and a circuit element 5b. The sensing unit 14 includes a Hall IC 14a and a magnet 14b, and detects the rotation of the detection target. The Hall IC 14a is mounted on the lower surface of the circuit board 5a in FIG. The Hall IC 14a converts a change in magnetic force associated with the rotation of the detected object into an electrical signal and outputs it to the outside via the one end 6a of the terminal 6. The magnet 14b is fixed to the upper surface of the circuit board 5a in FIG. 1 with an adhesive and applies a magnetic field to the Hall IC 14a.

端子６は、屈曲形成された３本のリードフレームからなり、端子６の他端部６ｂは半田によって回路基板５ａと電気的に接続されている。コネクタ部７は、検出手段５からの出力を外部機器へ接続伝達するものである。   The terminal 6 is composed of three bent lead frames, and the other end 6b of the terminal 6 is electrically connected to the circuit board 5a by solder. The connector section 7 is for transmitting the output from the detection means 5 to an external device.

本実施形態によれば、カバー４は、天板部４ａを備え、ハウジング３は、カバー４の天板部４ａに接する当接部８を備え、カバー４とハウジング３の当接部８とをレーザ溶着したことにより、高価なレーザ溶着装置、あるいは、大型のレーザ溶着装置を用いることなく、かつ、製造工程を簡素化し、製造コストを低減することが可能になる。   According to the present embodiment, the cover 4 includes the top plate portion 4 a, the housing 3 includes the contact portion 8 that contacts the top plate portion 4 a of the cover 4, and the cover 4 and the contact portion 8 of the housing 3 are provided. By laser welding, it is possible to simplify the manufacturing process and reduce the manufacturing cost without using an expensive laser welding apparatus or a large-sized laser welding apparatus.

次に、本発明の第２実施形態の移動物体検出装置１を、図２を用いて説明する。なお、第１実施形態と同一および相当箇所には、同一符号を付して、その詳細な説明は、省略する。   Next, the moving object detection device 1 according to the second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same and equivalent part as 1st Embodiment, and the detailed description is abbreviate | omitted.

第１実施形態では、溝部９をハウジング３の外周面３ｂに設けていたが、第２実施形態では、ハウジング３の端部３ａで当接部８の内側に、溝部９ａを設けたものである。この溝部９ａに、封止部材であるＯリング１１を装着したものである。   In the first embodiment, the groove portion 9 is provided on the outer peripheral surface 3b of the housing 3, but in the second embodiment, the groove portion 9a is provided on the inner side of the contact portion 8 at the end portion 3a of the housing 3. . An O-ring 11 as a sealing member is attached to the groove 9a.

また、カバー４の周壁部４ｃも、第１実施形態に比べて短く形成されている。なお、本実施形態では、カバー４は、周壁部４ｃを備えず、天板部４ａのみであってもよい。   Moreover, the surrounding wall part 4c of the cover 4 is also formed short compared with 1st Embodiment. In the present embodiment, the cover 4 does not include the peripheral wall portion 4c, and may be only the top plate portion 4a.

本実施形態によれば、ハウジング３の端部３ａで当接部８の内側に、溝部９ａを設けたことによって、Ｏリング１１に組み付けが容易となり、さらに生産性が向上し、製造コストを低減することができる。   According to the present embodiment, the groove portion 9a is provided on the inner side of the contact portion 8 at the end portion 3a of the housing 3, thereby facilitating assembly to the O-ring 11, further improving productivity, and reducing manufacturing costs. can do.

なお、図示していないが、第２実施形態の変形例として、溝部９ａを当接部８の外側に設けたものであっても良い。この変形例でも、第２実施形態と同様の作用効果を得ることができる。   In addition, although not shown in figure, the groove part 9a may be provided in the outer side of the contact part 8 as a modification of 2nd Embodiment. Even in this modification, the same effects as those of the second embodiment can be obtained.

本発明は、検出手段をハウジングとカバーで収納した移動物体検出装置に利用可能である。   INDUSTRIAL APPLICABILITY The present invention can be used for a moving object detection device in which detection means is accommodated by a housing and a cover.

１ 移動物体検出装置
２ 収納部
３ ハウジング
３ａ 端部
３ｂ 外周面
４ カバー
４ａ 天板部
４ｂ 周壁部
５ 検出手段
８ 当接部
９、９ａ、１０ 溝部
１１、１２ Ｏリング（封止部材）
１３ 溶着痕
DESCRIPTION OF SYMBOLS 1 Moving object detection apparatus 2 Storage part 3 Housing 3a End part 3b Outer peripheral surface 4 Cover 4a Top plate part 4b Perimeter wall part 5 Detection means 8 Contact part 9, 9a, 10 Groove part 11, 12 O-ring (sealing member)
13 welding marks

Claims (5)

収納部を備えたハウジングと、前記収納部を覆うカバーとを備え、前記収納部に被検出体の移動を検出する検出手段を配設した移動物体検出装置において、前記ハウジングをレーザ光を吸収する光吸収性樹脂から構成し、前記カバーを前記レーザ光を透過する光透過性樹脂から構成し、前記カバーは、前記収納部を覆う天板部を備え、前記ハウジングは、前記収納部の周囲で、かつ前記カバーの天板部に接する当接部を備え、前記天板部と前記当接部とをレーザ溶着したことを特徴とする移動物体検出装置。   A moving object detection apparatus comprising a housing provided with a storage portion and a cover covering the storage portion, wherein the detection portion for detecting the movement of the detected object is disposed in the storage portion, and the housing absorbs laser light. The cover is formed of a light-transmitting resin that transmits the laser light, the cover includes a top plate portion that covers the storage portion, and the housing is disposed around the storage portion. A moving object detection apparatus comprising: a contact portion that contacts the top plate portion of the cover, wherein the top plate portion and the contact portion are laser-welded. 前記カバーは、前記天板部の周縁に前記ハウジングの外周面の一部を覆う周壁部を備え、前記ハウジングは、前記周壁部によって覆われている所定箇所に溝部を備え、前記溝部に封止部材を配設し、前記カバーは、前記ハウジングの前記溝部に配設された前記封止部材を圧縮したことを特徴とする請求項１に記載の移動物体検出装置。   The cover includes a peripheral wall portion that covers a part of the outer peripheral surface of the housing at a peripheral edge of the top plate portion, the housing includes a groove portion at a predetermined position covered by the peripheral wall portion, and is sealed in the groove portion The moving object detection device according to claim 1, wherein a member is disposed, and the cover compresses the sealing member disposed in the groove portion of the housing. 前記ハウジングは、前記当接部の内側に溝部を設け、前記溝部に封止部材を配設し、前記カバーは、前記ハウジングの前記溝部に配設された前記封止部材を圧縮したことを特徴とする請求項１に記載の移動物体検出装置。   The housing is provided with a groove portion inside the contact portion, a sealing member is disposed in the groove portion, and the cover is formed by compressing the sealing member disposed in the groove portion of the housing. The moving object detection device according to claim 1. 前記ハウジングは、前記当接部の外側に溝部を設け、前記溝部に封止部材を配設し、前記カバーは、前記ハウジングの前記溝部に配設された前記封止部材を圧縮したことを特徴とする請求項１に記載の移動物体検出装置。   The housing is provided with a groove portion outside the contact portion, a sealing member is disposed in the groove portion, and the cover is formed by compressing the sealing member disposed in the groove portion of the housing. The moving object detection device according to claim 1. 前記カバーは、前記レーザ溶着された溶着痕を確認可能な色味と厚みを有することを特徴とする請求項１から請求項３のいずれかに記載の移動物体検出装置。
The moving object detection device according to any one of claims 1 to 3, wherein the cover has a color and thickness capable of confirming the laser-welded mark.
JP2009108934A 2009-04-28 2009-04-28 Moving object detector Pending JP2010256269A (en)

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Citations (9)

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JPH0721333U (en) * 1993-09-30 1995-04-18 株式会社土屋製作所 Welded structure of closed container
JPH0736059U (en) * 1993-12-14 1995-07-04 住友電気工業株式会社 Wheel speed sensor
JPH08135471A (en) * 1994-11-11 1996-05-28 Nippondenso Co Ltd Fuel injection timing adjusting device for internal combustion engine
JPH11325961A (en) * 1998-05-19 1999-11-26 Toyo Denso Co Ltd Sensor body for rotation detector
JP2000321093A (en) * 1999-05-10 2000-11-24 Denso Corp Rotation detecting apparatus
JP2001289688A (en) * 2000-04-07 2001-10-19 Toyo Keiki Co Ltd Manufacturing method for electronic unit case
JP2007232372A (en) * 2006-02-27 2007-09-13 Denso Corp Rotation detection device
JP2007245383A (en) * 2006-03-14 2007-09-27 Tokai Rika Co Ltd Manufacturing method of resin product
JP2008265163A (en) * 2007-04-20 2008-11-06 Mitsubishi Electric Corp Resin welded body, and its manufacturing method

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0721333U (en) * 1993-09-30 1995-04-18 株式会社土屋製作所 Welded structure of closed container
JPH0736059U (en) * 1993-12-14 1995-07-04 住友電気工業株式会社 Wheel speed sensor
JPH08135471A (en) * 1994-11-11 1996-05-28 Nippondenso Co Ltd Fuel injection timing adjusting device for internal combustion engine
JPH11325961A (en) * 1998-05-19 1999-11-26 Toyo Denso Co Ltd Sensor body for rotation detector
JP2000321093A (en) * 1999-05-10 2000-11-24 Denso Corp Rotation detecting apparatus
JP2001289688A (en) * 2000-04-07 2001-10-19 Toyo Keiki Co Ltd Manufacturing method for electronic unit case
JP2007232372A (en) * 2006-02-27 2007-09-13 Denso Corp Rotation detection device
JP2007245383A (en) * 2006-03-14 2007-09-27 Tokai Rika Co Ltd Manufacturing method of resin product
JP2008265163A (en) * 2007-04-20 2008-11-06 Mitsubishi Electric Corp Resin welded body, and its manufacturing method

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