JP2019049510A - Rotation detector - Google Patents

Rotation detector Download PDF

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JP2019049510A
JP2019049510A JP2017174763A JP2017174763A JP2019049510A JP 2019049510 A JP2019049510 A JP 2019049510A JP 2017174763 A JP2017174763 A JP 2017174763A JP 2017174763 A JP2017174763 A JP 2017174763A JP 2019049510 A JP2019049510 A JP 2019049510A
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resin holder
metal cap
caulking
shape
axis
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JP6868514B2 (en
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邦人 野口
Kunito Noguchi
邦人 野口
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Hitachi Astemo Ltd
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Hitachi Automotive Systems Ltd
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Abstract

To provide a novel rotation detector capable of improving reliability of a caulking part without causing a lack of caulking strength or a decrease in sealability.SOLUTION: A rotation detector is in a shape provided with plane parts 7A, 7B where resin holders 7 face each other. A cross section orthogonal to an axis line of metal caps 8 is annularly formed in a region caulked to a caulking recess 9 formed near a root of at least the resin holders 7 and is formed into a shape along shapes of the plane parts 7A, 7B of the resin holders 7 facing each other in a part or the whole of the region at an end side of the caulking recess 9. Since a part other than the region caulked is in a similar shape along the shape of the plane part where the resin holders face each other, gaps G can be reduced, and it is possible to suppress inclination of the axial line of the metal caps to a shaft center of the resin holders.SELECTED DRAWING: Figure 1

Description

本発明は、感磁素子等の回転検出素子を用いた回転検出器に係り、特に、金属製キャップによって回転検出素子が保護された回転検出器に関するものである。   The present invention relates to a rotation detector using a rotation detection element such as a magnetic sensing element, and more particularly to a rotation detector in which a rotation detection element is protected by a metal cap.

産業機械や自動車等の車両においては、電動モータの回転軸や内燃機関のクランク軸のような回転機構の回転を検出するために、非接触方式の回転検出器が用いられている。この非接触方式の回転検出器は、例えば、特開平８−２１９７０９号公報（特許文献１）にある通り、磁気検出素子を保持した樹脂製ホルダーに有底円筒状の金属製キャップを被せ、樹脂製ホルダーの加締め領域に金属製キャップの開口端を加締めて、樹脂製ホルダーと金属製キャップを一体化している。   In vehicles such as industrial machines and automobiles, non-contact type rotation detectors are used to detect rotation of a rotation mechanism such as a rotation shaft of an electric motor or a crankshaft of an internal combustion engine. For example, as described in JP-A-8-219709 (Patent Document 1), this non-contact type rotation detector covers a resin holder holding a magnetic detection element with a metal cap with a bottomed cylindrical shape, The open end of the metal cap is crimped to the caulking area of the holder, and the resin holder and the metal cap are integrated.

特開平８−２１９７０９号公報JP-A-8-219709

ところで、最近の回転検出器においては、樹脂製ホルダーは、図４、図５に示す通り、「２面形状」に形成されている。図４、図５において、樹脂製ホルダー２０は、軸線に直交する断面において、互いに向き合う形態の第１平面部２０Ａと第２平面部２０Ｂとを備えており、これらの第１平面部２０Ａと第２平面部２０Ｂの接続領域は円弧状部２０Ｃに形成されており、この円弧状部２０Ｃに金属製キャップ２１が挿入される形態で一体化されている。   By the way, in the recent rotation detector, the resin holder is formed in a "two-sided shape" as shown in FIG. 4 and FIG. In FIGS. 4 and 5, the resin holder 20 is provided with a first flat portion 20A and a second flat portion 20B facing each other in a cross section orthogonal to the axis, and these first flat portions 20A and The connection area of the two flat surface portion 20B is formed in an arc-shaped portion 20C, and the arc-shaped portion 20C is integrated in a form in which the metal cap 21 is inserted.

そして、第１平面部２０Ａと第２平面部２０Ｂの間には空間が形成され、この空間に感磁素子等の回転検出素子や、これの検出回路が実装されている。尚、第１平面部２０Ａや第２平面部２０Ｂに感磁素子等の回転検出素子や、これの検出回路が実装される場合もある。金属製キャップ２１は図５に示してある通り、全長に亘り軸線に直交する断面が同一半径の円環状に形成されており、金属製キャップ２１は樹脂製ホルダー２０の円弧状部２０Ｃに接触するようにして挿入されている。尚、図５においては、金属製キャップ２１の厚みを誇張して表示している。   A space is formed between the first flat portion 20A and the second flat portion 20B, and a rotation detection element such as a magnetosensitive element or a detection circuit thereof is mounted in this space. A rotation detection element such as a magnetosensitive element or a detection circuit thereof may be mounted on the first flat portion 20A or the second flat portion 20B. As shown in FIG. 5, the metal cap 21 is formed in an annular shape having the same radius in cross section orthogonal to the axis along the entire length, and the metal cap 21 contacts the arc-shaped portion 20C of the resin holder 20. It is inserted in the way. In FIG. 5, the thickness of the metal cap 21 is exaggerated.

金属製キャップ２１を樹脂製ホルダー２０に組み付ける場合は、金属製キャップ２１を所定位置まで挿入した後に、樹脂製ホルダー２０の根元付近に形成された加締め凹部２２に、金属製キャップ２１の開口端を位置させて加締め工具２３を押し当て、回転検出器、或いは加締め工具２３を、回転検出器の軸線を中心にして回転させて、金属製キャップ２１の開口端を内側に折り曲げて加締め凹部２２に加締め固定するようにしている。   When the metal cap 21 is assembled to the resin holder 20, the opening end of the metal cap 21 is inserted into the caulking recess 22 formed in the vicinity of the root of the resin holder 20 after the metal cap 21 is inserted to a predetermined position. Position and press the caulking tool 23, rotate the rotation detector or caulking tool 23 around the axis of the rotation detector, bend the open end of the metal cap 21 inward, and caulk It crimps and fixes to the recessed part 22. As shown in FIG.

しかしながら、図５にある通り、「２面形状」の樹脂製ホルダー２０は、金属製キャップ２１の内周面と、第１平面部２０Ａ及び第２平面部２０Ｂの平面状の表面との間に大きな隙間Ｇが形成されるため、加締め作業の時に、この大きな隙間Ｇの存在によって、金属製キャップ２１の軸線が樹脂製ホルダー２０の軸心に対して傾くことがあり、これによって加締め強度の不足やシール性の低下を生じ、加締め部分の信頼性が低下する恐れがある。   However, as shown in FIG. 5, the “two-sided” resin holder 20 is formed between the inner peripheral surface of the metal cap 21 and the planar surfaces of the first flat portion 20A and the second flat portion 20B. Since a large gap G is formed, the axial line of the metal cap 21 may be inclined with respect to the axial center of the resin holder 20 due to the presence of the large gap G at the time of the caulking operation, whereby the caulking strength And the sealing performance may be reduced, which may reduce the reliability of the crimped portion.

本発明の目的は、加締め強度の不足やシール性の低下を抑制して、加締め部分の信頼性を向上することができる新規な回転検出器を提供することにある。   An object of the present invention is to provide a novel rotation detector capable of improving the reliability of a caulked portion by suppressing the shortage of caulking strength and the decrease in sealability.

本発明の特徴は、樹脂製ホルダーの軸線に直交する断面は、互いに向き合う平面部を備える形状とされ、金属製キャップの軸線に直交する断面は、少なくとも樹脂製ホルダーの根元付近に形成された加締め凹部に加締められる領域においては円環状に形成され、加締め凹部より先端側の領域の一部、或いは全部においては樹脂製ホルダーの互いに向き合う平面部の形状に沿った相似形状に形成されている、ところにある。   A feature of the present invention is that the cross section orthogonal to the axis of the resin holder has a shape having flat portions facing each other, and the cross section orthogonal to the axis of the metal cap is at least a portion formed near the root of the resin holder. It is formed in an annular shape in the region crimped to the tightening recess, and is formed in a similar shape along the shape of the facing flat portions of the resin holder in part or all of the region on the tip side from the crimping recess Yes, there is a place.

本発明によれば、金属製キャップの加締め固定が行われる領域は円環状に形成されているので、加締め作業が従来と同様に実施でき、また、加締め固定が行われる領域以外の一部、或いは全部が樹脂製ホルダーの互いに向き合う平面部の形状に沿った相似形状とされているので、大きな隙間が形成されないことから金属製キャップの軸線が樹脂製ホルダーの軸心に対して傾くことが抑制され、加締め強度の不足やシール性の低下を抑制することができる。   According to the present invention, the area in which the metal cap is crimped and fixed is formed in an annular shape, so that the caulking operation can be performed in the same manner as in the prior art. Since the part or the whole has a similar shape along the shape of the facing flat parts of the resin holder, the axis of the metal cap is inclined with respect to the axis of the resin holder because a large gap is not formed. Can be suppressed, and the shortage of caulking strength and the decrease in sealability can be suppressed.

本発明の実施形態になる回転検出器の要部縦断面を示す断面図である。It is a sectional view showing an important section longitudinal section of a rotation detector which becomes an embodiment of the present invention. 図１のＡ―Ａ断面を示す断面図である。FIG. 2 is a cross-sectional view showing a cross section AA of FIG. 1; 図１のＢ―Ｂ断面を示す断面図である。FIG. 2 is a cross-sectional view showing a cross section B-B in FIG. 1; 従来の回転検出器の要部縦断面を示す断面図である。It is sectional drawing which shows the principal part longitudinal cross-section of the conventional rotation detector. 図４のＣ―Ｃ断面を示す断面図である。FIG. 5 is a cross-sectional view showing a cross section taken along line CC of FIG. 4;

以下、本発明の実施形態について図面を用いて詳細に説明するが、本発明は以下の実施形態に限定されることなく、本発明の技術的な概念の中で種々の変形例や応用例をもその範囲に含むものである。   Hereinafter, although the embodiment of the present invention will be described in detail with reference to the drawings, the present invention is not limited to the following embodiment, and various modifications and applications can be made within the technical concept of the present invention. Is also included in that range.

図１においては、本発明の実施形態になる回転検出器５の要部縦断面を示しており、回転検出器５は、合成樹脂から作られた樹脂製コネクタ部６と、これも合成樹脂からなる樹脂製ホルダー７と、樹脂製ホルダー７を外部から被う金属製キャップ８とから構成されている。樹脂製コネクタ部６と樹脂製ホルダー７とは、同じ合成樹脂で一体的にモールド成形されている。樹脂製ホルダー７と金属製キャップ８は、所定方向の軸線Ｃに沿って延びた細長い形状とされており、ここでは、樹脂製ホルダー７と金属製キャップ８の軸線は同一とされている。   FIG. 1 shows a longitudinal sectional view of the main part of a rotation detector 5 according to an embodiment of the present invention, and the rotation detector 5 comprises a resin connector portion 6 made of synthetic resin, and also of synthetic resin. And a metal cap 8 for covering the resin holder 7 from the outside. The resin connector 6 and the resin holder 7 are integrally molded of the same synthetic resin. The resin holder 7 and the metal cap 8 have an elongated shape extending along an axis C in a predetermined direction. Here, the axes of the resin holder 7 and the metal cap 8 are the same.

樹脂製コネクタ部６は、外部の制御装置と接続される金属コネクタが埋設されており、樹脂製ホルダー７に実装された検出回路(図示せず)と接続されている。また、検出回路は樹脂製ホルダー７に設けられたホール素子等の感磁素子(図示せず)と接続され、回転機構に設けた永久磁石の磁束、或いは磁界の変化を検出して、回転機構の回転を検出している。   The resin connector portion 6 has a metal connector embedded in an external control device embedded therein, and is connected to a detection circuit (not shown) mounted on the resin holder 7. In addition, the detection circuit is connected to a magnetic sensing element (not shown) such as a Hall element provided in the resin holder 7, detects a change in magnetic flux or magnetic field of a permanent magnet provided in the rotational mechanism, Is detected.

ここで、後述するように金属製キャップ８が、樹脂製ホルダー８の平面部の形状に沿って形成されるので、感磁素子やこれの検出回路は、樹脂製ホルダー８の内部空間に収納配置されている。   Here, as described later, since the metal cap 8 is formed along the shape of the flat portion of the resin holder 8, the magnetosensitive element and the detection circuit thereof are accommodated and arranged in the internal space of the resin holder 8. It is done.

樹脂製ホルダー７は、図１乃至図３に示す通り「２面形状」に形成されている。ここで、図２は、図１のＡ-Ａ断面を示し、図３は図１のＢ-Ｂ断面を示している。図１乃至図３において、樹脂製ホルダー７は、樹脂製ホルダー７の軸線Ｃに直交する断面が、平行で互いに向き合う形態の第１平面部７Ａと第２平面部７Ｂとを備えており、これらの第１平面部７Ａと第２平面部７Ｂの接続領域は円弧状部７Ｃに形成された、いわゆる「角丸長方形」の形状に形成されている。この円弧状部７Ｃに金属製キャップ８が挿入される形態で、樹脂製ホルダー７と金属製キャップ８が一体化されている。   The resin holder 7 is formed in a “two-sided shape” as shown in FIGS. 1 to 3. Here, FIG. 2 shows an AA cross section of FIG. 1, and FIG. 3 shows a BB cross section of FIG. In FIGS. 1 to 3, the resin holder 7 is provided with a first plane portion 7A and a second plane portion 7B in which cross sections orthogonal to the axis C of the resin holder 7 are parallel and face each other. The connection region of the first flat surface portion 7A and the second flat surface portion 7B is formed in a so-called "rounded rectangular" shape formed in the arc-shaped portion 7C. The resin holder 7 and the metal cap 8 are integrated in a form in which the metal cap 8 is inserted into the arc-shaped portion 7C.

樹脂製ホルダー７の根元側には、軸線Ｃに直交する面が円形状に形成された加締め凹部９が設けられており、この加締め凹部９に隣接してＯリング収納溝１０が形成されている。このＯリング収納溝１０も円形状に形成されており、シール用のＯリング１１が収納されている。更に、Ｏリング収納溝１０から樹脂製ホルダー７の先端部７Ｄまでの全ては、上述した通り、第１平面部７Ａと第２平面部７Ｂ、及び第１平面部７Ａと第２平面部７Ｂを接続する円弧状部７Ｃから形成された「角丸長方形」に形成されている。   On the root side of the resin holder 7, there is provided a caulking recess 9 whose surface orthogonal to the axis C is formed in a circular shape, and an O-ring storage groove 10 is formed adjacent to the caulking recess 9 ing. The O-ring accommodating groove 10 is also formed in a circular shape, and the O-ring 11 for sealing is accommodated. Furthermore, as described above, all of the O-ring storage groove 10 to the tip portion 7D of the resin holder 7 are the first flat portion 7A and the second flat portion 7B, and the first flat portion 7A and the second flat portion 7B. It is formed in the "cornered rectangle" formed from the circular-arc-shaped part 7C to connect.

樹脂製ホルダー７の第１平面部７Ａと第２平面部７Ｂの間には図示しない空間が形成され、この空間に感磁素子等の回転検出素子や、これの検出回路が実装されている。金属製キャップ８は図１乃至図３に示してある通り、樹脂製ホルダー７を外部から被って回転検出素子や検出回路を保護するものであり、一方側に閉塞された先端部８Ｄが形成され、他方側に開放された開口端８Ｕが形成された有底筒状に形成されている。尚、図２、図３においても、金属製キャップ２の厚みを誇張して表示している。   A space (not shown) is formed between the first flat surface portion 7A and the second flat surface portion 7B of the resin holder 7. In this space, a rotation detection element such as a magnetosensitive element and a detection circuit thereof are mounted. As shown in FIGS. 1 to 3, the metal cap 8 covers the resin holder 7 from the outside to protect the rotation detection element and the detection circuit, and the closed end portion 8D is formed on one side. The other end is formed in a bottomed cylindrical shape in which an open end 8U opened to the other side is formed. In FIGS. 2 and 3 as well, the thickness of the metal cap 2 is exaggerated.

そして、金属製キャップ８の先端部８Ｄが、樹脂製ホルダー７の先端部７Ｄに当接する位置まで挿入されると、樹脂製ホルダー７の根元付近に形成された加締め凹部９に、金属製キャップ８の開口端８Ｕが位置するようになっている。そして、この開口端８Ｕに加締め工具２３を押し当て、回転検出器５、或いは加締め工具２３を、回転検出器５の軸線Ｃを中心にして回転させることで、金属製キャップ８の開口端８Ｕを内側に折り曲げて加締め凹部９に加締め固定されるようにしている。   When the end 8D of the metal cap 8 is inserted to a position where it abuts on the end 7D of the resin holder 7, the caulking recess 9 formed in the vicinity of the root of the resin holder 7 is a metal cap An open end 8U of 8 is positioned. Then, the caulking tool 23 is pressed against the opening end 8 U, and the rotation detector 5 or the caulking tool 23 is rotated about the axis C of the rotation detector 5, whereby the opening end of the metal cap 8 is The 8U is bent inward to be crimped and fixed to the caulking recess 9.

ここで、図１に示している通り、樹脂製ホルダー９の軸線Ｃの方向において、加締め凹部９の加締め部分から所定長さの円環形状領域ＬＣの間の金属製キャップ８は、加締め凹部９に隣接したＯリング収納溝１０の外周径とほぼ同じ内周径に設定された円環状の円環部８Ｅが形成されている。したがって、軸線Ｃに直交する金属製キャップ８の開口端８Ｕの断面は、円環部８Ｅであるので従来と同様に加締め作業を実施することができる。   Here, as shown in FIG. 1, in the direction of the axis C of the resin holder 9, the metal cap 8 between the caulking portion of the caulking recess 9 and the annular shape area LC of a predetermined length is caulked An annular ring portion 8E is formed which has an inner peripheral diameter substantially the same as the outer peripheral diameter of the O-ring storage groove 10 adjacent to the tightening recess 9. Therefore, the cross section of the open end 8U of the metal cap 8 orthogonal to the axis C is the annular portion 8E, so that the caulking operation can be performed as in the conventional case.

つまり、樹脂製ホルダー７の根元付近に形成された加締め凹部９に、金属製キャップ８の円環部８Ｅの形状とされた開口端８Ｕを位置させて加締め工具２３を押し当て、回転検出器５、或いは加締め工具２３を、回転検出器５の軸線Ｃを中心にして回転させて、金属製キャップ８の開口端８Ｕを内側に折り曲げて加締め凹部９に加締めることができる。このため、従来の加締め設備をそのまま利用できるので、設備コストを増加させることがないという効果を奏することができる。   That is, the opening end 8U in the shape of the annular portion 8E of the metal cap 8 is positioned in the caulking recess 9 formed near the root of the resin holder 7, and the caulking tool 23 is pressed to detect rotation The opening end 8U of the metal cap 8 can be bent inward and caulked in the caulking recess 9 by rotating the container 5 or the caulking tool 23 about the axis C of the rotation detector 5. Therefore, since the conventional caulking equipment can be used as it is, it is possible to achieve an effect that the equipment cost is not increased.

一方、樹脂製ホルダー９の軸線Ｃ方向において、図３に示している通り、円環形状領域ＬＣから樹脂製ホルダー７の先端側に向けて延びる相似形状領域ＬＦの間の樹脂製ホルダー７の軸線Ｃに直交する金属製キャップ８の断面は、樹脂製ホルダー７の互いに向き合う第１平面部７Ａと第２平面部７Ｂ、及び円弧状部７Ｃの形状に沿った、これも「角丸長方形」の形状に形成された相似形状とされている。   On the other hand, in the direction of the axis C of the resin holder 9, as shown in FIG. 3, the axis of the resin holder 7 between the similar shape areas LF extending from the annular ring area LC toward the tip end of the resin holder 7. The cross section of the metal cap 8 orthogonal to C is a "rectangular rectangle" along the shapes of the first flat portion 7A, the second flat portion 7B, and the circular arc portion 7C of the resin holder 7 facing each other. It has a similar shape formed into a shape.

つまり、金属製キャップ８の相似形状領域ＬＦの断面は、樹脂製ホルダー７の第１平面部７Ａと第２平面部７Ｂの形状に沿った第１平面部８Ａと第２平面部８Ｂ、及び円弧状部８Ｃとから形成されており、これによって、相似形状領域ＬＦの間は樹脂製ホルダー７の外周形状と金属製キャップ８の内周形状が相似形状となるので、樹脂製ホルダー７の外周面と金属製キャップ８の内周面との間に隙間Ｇが形成されるのが抑制されることになる。   That is, the cross section of the similar shape area LF of the metal cap 8 is the first flat portion 8A and the second flat portion 8B along the shapes of the first flat portion 7A and the second flat portion 7B of the resin holder 7, and The outer peripheral shape of the resin holder 7 and the inner peripheral shape of the metal cap 8 become similar shapes between the similar shape regions LF by the arc-shaped portion 8C, and thus the outer peripheral surface of the resin holder 7 It is suppressed that the clearance gap G is formed between and and the inner peripheral surface of the metal cap 8.

したがって、加締め作業の時に、隙間Ｇが存在しない、或いは存在してもその長さが短いので、金属製キャップ８の軸線が樹脂製ホルダー７の軸心に対して傾くことが抑制され、これによって加締め強度の不足やシール性の低下を生じる恐れが低減されることになる。   Therefore, at the time of the caulking operation, the gap G does not exist, or even if it exists, its length is short, so that the axis of the metal cap 8 is prevented from being inclined with respect to the axis of the resin holder 7 As a result, the risk of causing insufficient caulking strength and lowering of sealability is reduced.

ここで、相似形状領域ＬＦの軸線方向の長さは、円環形状領域ＬＣの軸線方向の長さより長く設定されている。相似形状領域ＬＦの軸線方向の長さが長いことによって、金属製キャップ８の軸線が樹脂製ホルダー７の軸心に対して傾くことを更に抑制することができる。   Here, the axial length of the similar shape area LF is set to be longer than the axial length of the annular shape area LC. The axial length of the metal cap 8 can be further suppressed from being inclined with respect to the axial center of the resin holder 7 due to the length in the axial direction of the conformal shape area LF being long.

また、この分だけ、金属製キャップ８の空間占有容積が小さくなるので、他の機器を配置する空間を確保することができるようになる。特に、自動車のような製品では、エンジンルーム内に安全対策機器や排気対策機器が収納されるので、少しでも有効活用空間が要求されているので、この点でも有効な構成となっている。   In addition, since the space occupied volume of the metal cap 8 is reduced by this amount, a space for arranging other devices can be secured. In particular, in products such as automobiles, safety devices and exhaust gas control devices are stored in the engine room, so an effective utilization space is required even for a little, so this configuration is also effective.

ここで、本実施形態では、金属製キャップ８の先端側に相似形状領域ＬＦを形成し、順番に遷移領域ＬＴ、及び円環形状領域ＬＣを形成して形状を大きくしていくので、金属製キャップ８をプレス成型する時の抜き工程を円滑にすることができる。ここで、遷移領域ＬＴは、相似形状領域ＬＦから円環形状領域ＬＣを連続して形成するために、相似形状領域ＬＦから外側に向けて拡大される形状となっている。   Here, in the present embodiment, the similar shape region LF is formed on the tip end side of the metal cap 8, and the transition region LT and the annular shape region LC are sequentially formed to increase the shape. The removal process at the time of press-molding the cap 8 can be made smooth. Here, the transition region LT has a shape which is expanded outward from the conformal shape region LF in order to continuously form the annular shape region LC from the conformal shape region LF.

尚、相似形状領域ＬＦの間は樹脂製ホルダー７の外周形状と金属製キャップ８の内周形状が相似形状とされているが、基本的な考え方は、金属製キャップ８の内周面が樹脂製ホルダー７の外周面に沿った形状に形成されていれば良く、若干の隙間が生じても差し支えないものである。要は、図５に示すような大きな隙間Ｇが形成されていなく、金属製キャップの軸線が樹脂製ホルダーの軸心に対して傾くことが抑制されていれば良いものである。   Although the outer peripheral shape of the resin holder 7 and the inner peripheral shape of the metal cap 8 are similar shapes between the similar shape areas LF, the basic idea is that the inner peripheral surface of the metal cap 8 is resin It may be formed in a shape along the outer peripheral surface of the holder 7 and a slight gap may occur. The point is that the large gap G as shown in FIG. 5 is not formed, and the axis of the metal cap may be suppressed from being inclined with respect to the axis of the resin holder.

また、本実施形態では、金属製キャップ８には、先端部８Ｄの側から所定の長さの相似形状領域ＬＦの間に亘って金属製キャップ８の内周面が樹脂製ホルダー７の外周面に沿った相似形状に形成されている。   Further, in the present embodiment, in the metal cap 8, the inner peripheral surface of the metal cap 8 is the outer peripheral surface of the resin holder 7 from the side of the tip 8 D to the portion between the similar shape areas LF of a predetermined length. It is formed in the similar shape along with.

しかしながら、金属製キャップ８の軸線が樹脂製ホルダー７の軸心に対して傾くことが抑制されれば良いため、金属製キャップ８の先端部８Ｄから樹脂製ホルダーのＯリング収納溝１０までの間の一部の領域にだけ、金属製キャップ８の内周面が樹脂製ホルダー７の外周面に沿った相似形状に形成されていてもよく、更には先端部８Ｄから樹脂製ホルダーのＯリング収納溝１０までの間の全部の領域で、金属製キャップ８の内周面が樹脂製ホルダー７の外周面に沿った相似形状に形成されていても良いものである。   However, it is only necessary that the axis of the metal cap 8 be prevented from being inclined with respect to the axis of the resin holder 7, so the distance from the tip 8 D of the metal cap 8 to the O ring storage groove 10 of the resin holder The inner circumferential surface of the metal cap 8 may be formed in a similar shape along the outer circumferential surface of the resin holder 7 only in a partial region of the O-ring of the resin holder from the tip 8D. The inner peripheral surface of the metal cap 8 may be formed in a similar shape along the outer peripheral surface of the resin holder 7 in the entire region up to the groove 10.

以上述べた通り、本発明によれば、樹脂製ホルダーの軸線に直交する断面は、互いに向き合う平面部を備える形状とされ、金属製キャップの軸線に直交する断面は、少なくとも樹脂製ホルダーの根元付近に形成された加締め凹部に加締められる領域においては円環状に形成され、加締め凹部より先端側の領域の一部、或いは全部においては樹脂製ホルダーの互いに向き合う平面部の形状に沿った相似形状に形成されている構成とした。   As described above, according to the present invention, the cross section orthogonal to the axis of the resin holder has a shape having flat portions facing each other, and the cross section orthogonal to the axis of the metal cap is at least near the root of the resin holder Is formed in an annular shape in a region caulked in the caulking recess formed on the surface, and in a part or the whole of the region on the tip side of the caulking recess, the similarities along the shapes of mutually facing flat portions of the resin holder It was set as the structure currently formed in the shape.

これによれば、金属製キャップの加締め固定が行われる領域は円環状に形成されているので、加締め作業が従来と同様に実施でき、また、加締め固定が行われる領域以外の一部、或いは全部が樹脂製ホルダーの互いに向き合う平面部の形状に沿った相似形状とされているので、大きな隙間が形成されないことから金属製キャップの軸線が樹脂製ホルダーの軸心に対して傾くことが抑制され、加締め強度の不足やシール性の低下を抑制することができる。   According to this, since the area in which the metal cap is caulked and fixed is formed in an annular shape, the caulking operation can be performed as in the conventional case, and a part other than the area where the caulking is performed Because the entire shape is similar to the shape of the facing flat portions of the resin holder, the axis of the metal cap may be inclined with respect to the axis of the resin holder because a large gap is not formed. Thus, it is possible to suppress the shortage of caulking strength and the decrease in sealability.

尚、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。例えば、上記した実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。   The present invention is not limited to the embodiments described above, but includes various modifications. For example, the embodiments described above are described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described. Also, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. In addition, with respect to a part of the configuration of each embodiment, it is possible to add, delete, and replace other configurations.

５…回転検出器、６…樹脂製コネクタ部、７…樹脂製ホルダー、７Ａ…第１平面部、７Ｂ…第２平面部、７Ｃ…円弧状部、７Ｄ…先端部、８…金属製キャップ、８Ａ…第１平面部、８Ｂ…第２平面部、８Ｃ…円弧状部、８Ｄ…先端部、８Ｅ…円環部、９…加締め凹部、１０…Ｏリング収納溝、１１…Ｏリング。   Reference Signs List 5 rotation detector 6 resin connector 7 resin holder 7A first flat surface 7B second flat surface 7C circular arc portion 7D tip 8 metal cap 8A: first plane portion, 8B: second plane portion, 8C: arc-shaped portion, 8D: tip portion, 8E: annular portion, 9: caulking recess, 10: O ring storage groove, 11: O ring

Claims (3)

少なくとも、樹脂製コネクタと、回転検出素子と検出回路が実装され、所定方向の軸線に沿って延びた樹脂製ホルダーと、前記回転検出素子と前記検出回路及び前記樹脂製ホルダーを外部から被い、前記樹脂製ホルダーの根元付近の加締め凹部に加締め固定され、前記軸線の方向に延びた金属製キャップと、を備える回転検出器であって、
前記樹脂製ホルダーは、前記軸線に直交する断面が互いに向き合う平面部を備える形状とされ、
前記金属製キャップの前記軸線に直交する断面は、前記樹脂製ホルダーの前記根元付近に形成された前記加締め凹部に加締められる領域においては、円環状に形成されて前記加締め凹部に加締め固定されており、前記加締め凹部より先端側の領域の一部、或いは全部においては、前記樹脂製ホルダーの互いに向き合う前記平面部の形状に沿った相似形状に形成されている
ことを特徴とする回転検出器。 At least a resin connector, a rotation detection element and a detection circuit are mounted, and a resin holder extending along an axis in a predetermined direction, and covering the rotation detection element, the detection circuit, and the resin holder from the outside, And a metal cap which is caulked and fixed in a caulking recess near the root of the resin holder and extends in the direction of the axis,
The resin holder has a shape including flat portions in which cross sections orthogonal to the axis face each other,
A cross section orthogonal to the axis of the metal cap is formed in an annular shape in a region caulked in the caulking recess formed near the root of the resin holder, and caulking in the caulking recess It is fixed, and is formed in a similar shape along the shape of the flat portions facing each other of the resin holder in a part or all of the region on the tip side of the caulking recess. Rotation detector. 請求項１に記載の回転検出器において、
前記金属製キャップは、
前記樹脂製ホルダーの前記加締め凹部付近で前記軸線に沿って所定の長さに亘って形成された円環形状領域と、前記軸線に沿って前記樹脂製ホルダーの先端部から前記加締め凹部に向かい所定の長さに亘って前記相似形状に形成された相似形状領域と、前記円環形状領域と相似形状領域とを結ぶ遷移領域とから構成されている
ことを特徴とする回転検出器。 In the rotation detector according to claim 1,
The metal cap is
An annular area formed along the axis in the vicinity of the caulking recess of the resin holder along a predetermined length, and from the tip of the resin holder along the axis to the caulking recess A rotation detector characterized by comprising a similar shape region formed in the similar shape over a predetermined length and a transition region connecting the annular shape region and the similar shape region. 請求項２に記載の回転検出器において、
前記金属製キャップの前記相似形状領域は、前記金属製キャップの前記円環形状領域より前記軸線の方向の長さが長く設定されている
ことを特徴とする回転検出器。 In the rotation detector according to claim 2,
The rotation detector is characterized in that a length in a direction of the axis is set longer than the annular shape region of the metal cap.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0979864A (en) * 1995-09-08 1997-03-28 Hitachi Ltd Rotational position detecting device
JP2008268016A (en) * 2007-04-20 2008-11-06 Sumiden Electronics Kk Wheel speed sensor
JP2009058478A (en) * 2007-09-03 2009-03-19 Denso Corp Rotation detector
JP2009074993A (en) * 2007-09-21 2009-04-09 Aisin Seiki Co Ltd Rotation detecting apparatus and method for manufacturing the rotation detecting apparatus
US20100064788A1 (en) * 2006-12-21 2010-03-18 Hoefler Siegfried Device comprising a sensor and coupling means

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0979864A (en) * 1995-09-08 1997-03-28 Hitachi Ltd Rotational position detecting device
US20100064788A1 (en) * 2006-12-21 2010-03-18 Hoefler Siegfried Device comprising a sensor and coupling means
JP2008268016A (en) * 2007-04-20 2008-11-06 Sumiden Electronics Kk Wheel speed sensor
JP2009058478A (en) * 2007-09-03 2009-03-19 Denso Corp Rotation detector
JP2009074993A (en) * 2007-09-21 2009-04-09 Aisin Seiki Co Ltd Rotation detecting apparatus and method for manufacturing the rotation detecting apparatus

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