JP6894331B2 - Steering angle detection device for steering device - Google Patents

Steering angle detection device for steering device Download PDF

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JP6894331B2
JP6894331B2 JP2017177233A JP2017177233A JP6894331B2 JP 6894331 B2 JP6894331 B2 JP 6894331B2 JP 2017177233 A JP2017177233 A JP 2017177233A JP 2017177233 A JP2017177233 A JP 2017177233A JP 6894331 B2 JP6894331 B2 JP 6894331B2
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steering
steering shaft
cover member
rotation axis
locking
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JP2019051815A (en
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輝幸 大西
輝幸 大西
弘樹 村上
弘樹 村上
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Hitachi Astemo Ltd
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Hitachi Astemo Ltd
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Description

本発明は、ステアリング装置用舵角検出装置に関する。 The present invention relates to a steering angle detecting device for a steering device.

ステアリング装置用舵角検出装置として、例えば以下の特許文献1に記載されたステアリング装置用舵角検出装置が知られている。 As a steering angle detecting device for a steering device, for example, a steering angle detecting device for a steering device described in Patent Document 1 below is known.

特許文献1のステアリング装置用舵角検出装置では、操舵軸の周囲に取り付けられた歯車部材を収容するケーシング部材が、板状のカバー部材によって閉塞されている。 In the steering angle detection device for a steering device of Patent Document 1, a casing member accommodating a gear member attached around a steering shaft is closed by a plate-shaped cover member.

特開2016−172519号公報Japanese Unexamined Patent Publication No. 2016-172519

上記のようなステアリング装置用舵角検出装置においてケーシング部材へのカバー部材の組み付けの際には、組み付けの簡便化を図ることが求められている。 When assembling the cover member to the casing member in the steering angle detecting device for a steering device as described above, it is required to simplify the assembling.

本発明は、従来の実情に鑑みて案出されたもので、ケーシング部材へのカバー部材の組み付けを簡便化することができるステアリング装置用舵角検出装置を提供することを目的としている。 The present invention has been devised in view of the conventional circumstances, and an object of the present invention is to provide a steering angle detecting device for a steering device that can simplify the assembly of a cover member to a casing member.

本発明によれば、その一つの態様において、カバー部材の第1係止突起当接部が、操舵軸の回転軸線の径方向において第1係止部挿入孔の外側で、第1カバー部材係止部の第1係止突起とオーバーラップしている。 According to the present invention, in one aspect thereof, the first locking projection contact portion of the cover member is outside the first locking portion insertion hole in the radial direction of the rotation axis of the steering shaft, and the first cover member is engaged. It overlaps with the first locking projection of the stop.

本発明によれば、ケーシング部材へのカバー部材の組み付けが簡便化される。 According to the present invention, assembling the cover member to the casing member is simplified.

第1の実施例のステアリング装置の概略図である。It is the schematic of the steering apparatus of 1st Example. 第1の実施例の操舵センサの斜視図である。It is a perspective view of the steering sensor of 1st Example. 第1の実施例の操舵センサの分解斜視図である。It is an exploded perspective view of the steering sensor of 1st Example. 第1の実施例の操舵センサの平面図である。It is a top view of the steering sensor of 1st Example. 図4の線A−Aに沿って切断した操舵センサの断面図である。It is sectional drawing of the steering sensor cut along the line AA of FIG. 図4の線B−Bに沿って切断したカバー部材および付勢部の断面図である。It is sectional drawing of the cover member and the urging part cut along the line BB of FIG. ケーシング部材へのカバー部材の組付工程を示す工程図である。It is a process drawing which shows the process of assembling the cover member to a casing member. ケーシング部材およびカバー部材への操舵軸の挿入工程を示す工程図である。It is a process drawing which shows the process of inserting a steering shaft into a casing member and a cover member. 操舵軸の挿入後のケーシング部材およびカバー部材等の状態を示す説明図である。It is explanatory drawing which shows the state of the casing member, the cover member and the like after the insertion of a steering shaft. (a)は、第1カバー部材係止部および第2の実施例のカバー部材の断面図であり、(b)は、第1カバー部材係止部および第2の実施例のカバー部材の平面図である。(A) is a cross-sectional view of the first cover member locking portion and the cover member of the second embodiment, and (b) is a plane of the first cover member locking portion and the cover member of the second embodiment. It is a figure.

以下、本発明のステアリング装置用舵角検出装置の実施例を図面に基づき説明する。なお、以下の実施例は、このステアリング装置用舵角検出装置を車両の操舵装置であるステアリング装置に適用したものである。 Hereinafter, examples of the steering angle detection device for a steering device of the present invention will be described with reference to the drawings. In the following embodiment, the steering angle detection device for a steering device is applied to a steering device which is a steering device of a vehicle.

[第1の実施例]
(ステアリング装置の構成)
図1は、一実施例のステアリング装置1の概略図である。
[First Example]
(Steering device configuration)
FIG. 1 is a schematic view of the steering device 1 of one embodiment.

図1に示すように、ステアリング装置1は、運転者からの操舵力を伝達する操舵機構2と、運転者の操舵操作を補助する操舵アシスト機構3と、を備えている。 As shown in FIG. 1, the steering device 1 includes a steering mechanism 2 that transmits a steering force from the driver and a steering assist mechanism 3 that assists the driver in steering operation.

操舵機構2は、車両の運転室内に配置されたステアリングホイール4と、車両の前輪である2つの転舵輪5,5と、を機械的に連結している。操舵機構2は、ステアリングホイール4からの回転力が伝達される入力軸6と、図示せぬトーションバーを介して入力軸6に接続された出力軸7と、を有した操舵軸8、およびこの操舵軸8の回転を転舵輪5,5に伝達する伝達機構9を備えている。伝達機構9は、出力軸7の外周に設けられた図示せぬピニオンと、ラックバー10の外周に設けられた図示せぬラックと、からなるラック&ピニオン機構(ラック&ピニオン・ギヤ)により構成されている。ラックバー10の両端は、2つのタイロッド11,11および図示せぬ2つのナックルアームを介して対応する転舵輪5,5にそれぞれ連結されている。 The steering mechanism 2 mechanically connects the steering wheel 4 arranged in the driver's cab of the vehicle and the two steering wheels 5 and 5, which are the front wheels of the vehicle. The steering mechanism 2 includes a steering shaft 8 having an input shaft 6 to which the rotational force from the steering wheel 4 is transmitted, and an output shaft 7 connected to the input shaft 6 via a torsion bar (not shown), and the steering shaft 8. A transmission mechanism 9 for transmitting the rotation of the steering shaft 8 to the steering wheels 5 and 5 is provided. The transmission mechanism 9 is composed of a rack and pinion mechanism (rack and pinion gear) including a pinion (not shown) provided on the outer circumference of the output shaft 7 and a rack (not shown) provided on the outer circumference of the rack bar 10. Has been done. Both ends of the rack bar 10 are connected to the corresponding steering wheels 5, 5 via two tie rods 11 and 11 and two knuckle arms (not shown), respectively.

操舵アシスト機構3は、操舵機構2に操舵力を付与する電動モータであるモータ12を備えており、このモータ12は、電子制御ユニット(ECU)13と一体に構成されている。 The steering assist mechanism 3 includes a motor 12 which is an electric motor that applies a steering force to the steering mechanism 2, and the motor 12 is integrally configured with an electronic control unit (ECU) 13.

電子制御ユニット13は、各種制御処理を記憶および実行する機能を有し、舵角センサ18からの舵角の信号やトルクセンサ19(図2および図3参照)からの操舵トルクの信号に基づいてモータ12を駆動制御する。 The electronic control unit 13 has a function of storing and executing various control processes, and is based on a steering angle signal from the steering angle sensor 18 and a steering torque signal from the torque sensor 19 (see FIGS. 2 and 3). The motor 12 is driven and controlled.

また、モータ12は、伝達装置14を介してラックバー10に接続されている。この伝達装置14は、モータ12の出力軸の先端部外周に固設された図示せぬ入力プーリと、ラックバー10の外周に固設された図示せぬ出力プーリと、が図示せぬベルトを介して接続されることで、ラックバー10と連係されている。そして、出力プーリとラックバー10との間には、減速機である螺旋状の溝形状を有する図示せぬボールねじ機構が設けられている。 Further, the motor 12 is connected to the rack bar 10 via the transmission device 14. The transmission device 14 has a belt (not shown) formed by an input pulley (not shown) fixed to the outer periphery of the tip of the output shaft of the motor 12 and an output pulley (not shown) fixed to the outer periphery of the rack bar 10. By being connected via, it is linked with the rack bar 10. A ball screw mechanism (not shown) having a spiral groove shape, which is a speed reducer, is provided between the output pulley and the rack bar 10.

かかるステアリング装置1の構成から、運転者がステアリングホイール4を回転操作すると、入力軸6が回転してトーションバーが捩られ、これにより生じるトーションバーの弾性力によって、出力軸7が回転する。そして、出力軸7の回転運動が上記ラック&ピニオン機構によりラックバー10の軸方向に沿う直線運動に変換され、タイロッド11,11を介して図示せぬナックルアームが車幅方向へと押し引きされることによって、対応した転舵輪5,5の向きが変更される。 From the configuration of the steering device 1, when the driver rotates the steering wheel 4, the input shaft 6 rotates and the torsion bar is twisted, and the elastic force of the torsion bar generated by the rotation causes the output shaft 7 to rotate. Then, the rotary motion of the output shaft 7 is converted into a linear motion along the axial direction of the rack bar 10 by the rack & pinion mechanism, and the knuckle arm (not shown) is pushed and pulled in the vehicle width direction via the tie rods 11 and 11. As a result, the directions of the corresponding steering wheels 5 and 5 are changed.

図2は、第1の実施例の操舵センサ15の斜視図である。図3は、第1の実施例の操舵センサ15の分解斜視図である。 FIG. 2 is a perspective view of the steering sensor 15 of the first embodiment. FIG. 3 is an exploded perspective view of the steering sensor 15 of the first embodiment.

ここで、以下の説明の便宜上、操舵軸8の回転軸線M1に沿った方向を「軸方向」と定義し、この軸方向と直交する方向を「径方向」と定義し、さらに、回転軸線M1周りの方向を「周方向」と定義する。また、ステアリングホイール4が位置する側である軸方向の一端側を「第1側」と定義し、軸方向の他端側つまり第1側の反対側を「第2側」と定義する。 Here, for convenience of the following description, the direction along the rotation axis M1 of the steering shaft 8 is defined as the "axial direction", the direction orthogonal to this axial direction is defined as the "radial direction", and further, the rotation axis M1 The surrounding direction is defined as "circumferential direction". Further, one end side in the axial direction on which the steering wheel 4 is located is defined as the "first side", and the other end side in the axial direction, that is, the opposite side of the first side is defined as the "second side".

操舵センサ15は、ステアリングホイール4(図1参照)の舵角を検出する舵角センサ18と、ステアリングホイール4に入力された操舵トルクを検出するトルクセンサ19と、を備えている。 The steering sensor 15 includes a steering angle sensor 18 that detects the steering angle of the steering wheel 4 (see FIG. 1), and a torque sensor 19 that detects the steering torque input to the steering wheel 4.

舵角センサ18は、図示せぬセンサハウジング内においてトルクセンサ19よりも第1側に配置されている。舵角センサ18は、ケーシング部材20と、このケーシング部材20内に収容される3つの歯車である第1〜第3歯車部材21,22,23と、ケーシング部材20を覆う板状のカバー部材24と、ケーシング部材20とトルクセンサ19との間に設けられた基板25と、から主として構成されている。 The steering angle sensor 18 is arranged on the first side of the torque sensor 19 in a sensor housing (not shown). The steering angle sensor 18 includes a casing member 20, first to third gear members 21 and 22, 23 which are three gears housed in the casing member 20, and a plate-shaped cover member 24 that covers the casing member 20. It is mainly composed of a substrate 25 provided between the casing member 20 and the torque sensor 19.

ケーシング部材20は、弾性材料、例えば合成樹脂によって、概ね扇状の外形をなすように有底筒状に形成されており、ケーシング部材20の内部に形成された周壁27aによって囲まれた歯車収容部27内に第1〜第3歯車部材21,22,23を収容する。ケーシング部材20には、その底部にある板状の基部35(図5参照)に、第1歯車部材21とともに操舵軸8が挿入されるケーシング部材操舵軸挿入孔26が形成されている。ケーシング部材操舵軸挿入孔26は、径方向に沿った断面が円形をなすように形成されており、その内径は、円柱状の操舵軸8(図7および図8参照)の外周に取り付けられる第1歯車部材21の後述する円筒状の第1歯車部材本体部21aの外径よりも大きく形成されている。 The casing member 20 is made of an elastic material, for example, a synthetic resin, and is formed in a bottomed tubular shape so as to form a substantially fan-shaped outer shape, and the gear accommodating portion 27 surrounded by a peripheral wall 27a formed inside the casing member 20. The first to third gear members 21, 22, and 23 are housed therein. The casing member 20 is formed with a casing member steering shaft insertion hole 26 into which the steering shaft 8 is inserted together with the first gear member 21 in the plate-shaped base 35 (see FIG. 5) at the bottom thereof. The casing member steering shaft insertion hole 26 is formed so that the cross section along the radial direction forms a circular shape, and the inner diameter thereof is attached to the outer circumference of the cylindrical steering shaft 8 (see FIGS. 7 and 8). 1 The outer diameter of the cylindrical first gear member main body 21a of the gear member 21, which will be described later, is larger than the outer diameter.

また、ケーシング部材20には、カバー部材24に係止することでケーシング部材20からのカバー部材24の脱落を抑制する後述する第1〜第3カバー部材係止部28,29,30を、ケーシング部材操舵軸挿入孔26の周囲に備えている。 Further, in the casing member 20, the first to third cover member locking portions 28, 29, 30 described later, which are described later, are mounted on the casing member 20 to prevent the cover member 24 from falling off from the casing member 20 by locking the cover member 24. It is provided around the member steering shaft insertion hole 26.

第1歯車部材21は、例えば合成樹脂により形成されており、円筒形状をなす第1歯車部材本体部21aと、この第1歯車部材本体部21aの外周部に一体に形成された複数の第1歯部21bと、を備えている。 The first gear member 21 is formed of, for example, a synthetic resin, and has a cylindrical first gear member main body 21a and a plurality of first gear members integrally formed on the outer peripheral portion of the first gear member main body 21a. It is provided with a tooth portion 21b.

第1歯車部材本体部21aには、径方向内側に突出する対向した一対の歯車係止部54,54が形成されている。歯車係止部54は、可撓性を有した角柱状の歯車係止部本体部54aと、この歯車係止部本体部54aの先端に形成された歯車係止突起54bと、を備えている。歯車係止突起54bは、操舵軸8が第1歯車部材本体部21aの内周側に挿入された状態で、所謂スナップフィットにより、操舵軸8の外周部に設けられた図示せぬ係止溝に係止する。複数の第1歯部21bは、径方向において第1歯車部材本体部21aの外周部に設けられた外歯としてそれぞれ形成されている。 The first gear member main body 21a is formed with a pair of facing gear locking portions 54, 54 protruding inward in the radial direction. The gear locking portion 54 includes a flexible prismatic gear locking portion main body 54a and a gear locking projection 54b formed at the tip of the gear locking portion main body 54a. .. The gear locking projection 54b has a locking groove (not shown) provided on the outer peripheral portion of the steering shaft 8 by a so-called snap fit in a state where the steering shaft 8 is inserted into the inner peripheral side of the first gear member main body 21a. Lock to. The plurality of first tooth portions 21b are each formed as external teeth provided on the outer peripheral portion of the first gear member main body portion 21a in the radial direction.

第2歯車部材22は、歯車収容部27内において第1歯車部材21と噛み合うように第1歯車部材21の外周側に配置された歯車であり、操舵軸8と一体となって回転する第1歯車部材21の回転に伴って回転する。第2歯車部材22は、例えば合成樹脂により形成されており、環状の第2歯車部材本体部22aと、この第2歯車部材本体部22aの外周部と一体に形成され、上記複数の第1歯部21bと噛み合う外歯である複数の第2歯部22bと、を備えている。 The second gear member 22 is a gear arranged on the outer peripheral side of the first gear member 21 so as to mesh with the first gear member 21 in the gear accommodating portion 27, and is a first gear that rotates integrally with the steering shaft 8. It rotates with the rotation of the gear member 21. The second gear member 22 is formed of, for example, synthetic resin, and is integrally formed with the annular second gear member main body 22a and the outer peripheral portion of the second gear member main body 22a, and the plurality of first teeth. A plurality of second tooth portions 22b, which are external teeth that mesh with the portion 21b, are provided.

第3歯車部材23は、歯車収容部27内において第2歯車部材22と噛み合うように第2歯車部材22の外周側に配置された歯車であり、第2歯車部材22の回転に伴って回転する。第3歯車部材23は、例えば合成樹脂により形成されており、第2歯車部材22と同様に、環状の第3歯車部材本体部23aと、複数の第2歯部22bと噛み合う外歯である複数の第3歯部23bと、を備えている。なお、第3歯車部材23は、第2歯車部材22を介さずに、第1歯車部材21と直接に噛み合うように構成されていても良い。 The third gear member 23 is a gear arranged on the outer peripheral side of the second gear member 22 so as to mesh with the second gear member 22 in the gear accommodating portion 27, and rotates with the rotation of the second gear member 22. .. The third gear member 23 is formed of, for example, a synthetic resin, and like the second gear member 22, a plurality of external teeth that mesh with the annular third gear member main body portion 23a and the plurality of second tooth portions 22b. The third tooth portion 23b of the above is provided. The third gear member 23 may be configured to directly mesh with the first gear member 21 without going through the second gear member 22.

第1〜第3歯車部材21,22,23は、それぞれ異なる歯数を有しており、特に第2歯車部材22の第2歯部22bおよび第3歯車部材23の第3歯部23bに関しては、それぞれ互いに割り切れない歯数となるように予め設定されている。本実施例では、第2歯車部材22の歯数が20枚に設定されており、一方、第3歯車部材23の歯数が22枚に設定されている。これにより、第1歯車部材21の所定の回転角(ステアリングホイール4の所定舵角)に対する第2歯車部材22の回転角と第3歯車部材23の回転角との組み合わせが常に一組しか存在しないようになっている。換言すれば、第2歯車部材22および第3歯車部材23の回転角を検出することで、操舵軸8の回転角(舵角)が、電子制御ユニット13内のマイクロプロセッサ等により算出されるようになっている。 The first to third gear members 21, 22, and 23 have different numbers of teeth, and particularly with respect to the second tooth portion 22b of the second gear member 22 and the third tooth portion 23b of the third gear member 23. , Each is preset so that the number of teeth is not divisible by each other. In this embodiment, the number of teeth of the second gear member 22 is set to 20, while the number of teeth of the third gear member 23 is set to 22. As a result, there is always only one set of combinations of the rotation angle of the second gear member 22 and the rotation angle of the third gear member 23 with respect to the predetermined rotation angle of the first gear member 21 (predetermined steering angle of the steering wheel 4). It has become like. In other words, by detecting the rotation angles of the second gear member 22 and the third gear member 23, the rotation angle (rudder angle) of the steering shaft 8 is calculated by the microprocessor or the like in the electronic control unit 13. It has become.

そして、第2歯車部材22および第3歯車部材23の回転角を検出するため、第2歯車部材22および第3歯車部材23には、第2歯車部材用磁性部材31および第3歯車部材用磁性部材32がそれぞれ設けられている。第2および第3歯車部材用磁性部材31,32は、第2および第3歯車部材22,23の回転軸線M2,M3の周りにN極とS極が交互に並ぶようにそれぞれ構成されている。 Then, in order to detect the rotation angles of the second gear member 22 and the third gear member 23, the second gear member 22 and the third gear member 23 are subjected to the magnetic member 31 for the second gear member and the magnetism for the third gear member. Each member 32 is provided. The magnetic members 31 and 32 for the second and third gear members are configured so that the north and south poles are alternately arranged around the rotation axes M2 and M3 of the second and third gear members 22 and 23, respectively. ..

基板25の第2および第3歯車部材22,23と対向する部位には、第2および第3歯車部材用磁性部材31,32が発する磁界の変化を検出する磁気抵抗素子である第2および第3歯車部材用回転検出センサ33,34がそれぞれ設けられている。第2および第3歯車部材用回転検出センサ33,34は、第2および第3歯車部材用磁性部材31,32の磁界の変化をそれぞれ検出し、この磁界の変化に基づいて第2および第3歯車部材22,23の回転角を検出する。 At the portions of the substrate 25 facing the second and third gear members 22 and 23, the second and second magnetoresistive elements are magnetic resistance elements that detect changes in the magnetic fields generated by the magnetic members 31 and 32 for the second and third gear members. 3 Rotation detection sensors 33 and 34 for gear members are provided, respectively. The rotation detection sensors 33 and 34 for the second and third gear members detect changes in the magnetic fields of the magnetic members 31 and 32 for the second and third gear members, respectively, and the second and third gear members are based on the changes in the magnetic fields. The rotation angles of the gear members 22 and 23 are detected.

また、歯車収容部27を構成する周壁27aの外周部に、周壁27aの端面よりも第1側へと軸方向に突出する位置決め部材である3つのダウエルピン36が形成されている。各ダウエルピン36は、カバー部材24に形成されたダウエルピン用挿入孔40に挿入され、ケーシング部材20に対するカバー部材24の水平方向の位置を決定する。 Further, on the outer peripheral portion of the peripheral wall 27a constituting the gear accommodating portion 27, three dowel pins 36 which are positioning members protruding in the axial direction from the end surface of the peripheral wall 27a are formed. Each dowel pin 36 is inserted into a dowel pin insertion hole 40 formed in the cover member 24, and determines the horizontal position of the cover member 24 with respect to the casing member 20.

カバー部材24は、歯車収容部27の外形形状に対応した板状に形成されている。カバー部材24は、ケーシング部材操舵軸挿入孔26と軸方向にオーバーラップした位置に、第1歯車部材21とともに操舵軸8が挿入されるカバー部材操舵軸挿入孔37を有している。カバー部材操舵軸挿入孔37は、径方向に沿った断面が円形をなすように形成されている。カバー部材操舵軸挿入孔37の内径は、ケーシング部材操舵軸挿入孔26と同様に、第1歯車部材21の円筒状の第1歯車部材本体部21aの外径よりも大きく形成されている。
また、カバー部材24は、第2および第3歯車部材22,23と軸方向にオーバーラップした位置に、径方向に沿った断面が円形をなす第2および第3貫通孔38,39をそれぞれ有している。
The cover member 24 is formed in a plate shape corresponding to the outer shape of the gear accommodating portion 27. The cover member 24 has a cover member steering shaft insertion hole 37 into which the steering shaft 8 is inserted together with the first gear member 21 at a position that overlaps the casing member steering shaft insertion hole 26 in the axial direction. The cover member steering shaft insertion hole 37 is formed so that the cross section along the radial direction is circular. The inner diameter of the cover member steering shaft insertion hole 37 is formed to be larger than the outer diameter of the cylindrical first gear member main body 21a of the first gear member 21, similarly to the casing member steering shaft insertion hole 26.
Further, the cover member 24 has second and third through holes 38 and 39 having a circular cross section along the radial direction at positions overlapping the second and third gear members 22 and 23 in the axial direction, respectively. doing.

なお、上記舵角センサ18は、特許請求の範囲に記載の「ステアリング装置用舵角検出装置」に相当する。 The steering angle sensor 18 corresponds to the "steering angle detection device for steering device" described in the claims.

トルクセンサ19は、入力軸6と出力軸7との間の相対回転角に基づいて、ステアリングホイール4に入力された操舵トルクを検出する。 The torque sensor 19 detects the steering torque input to the steering wheel 4 based on the relative angle of rotation between the input shaft 6 and the output shaft 7.

図4は、第1の実施例の操舵センサ15の平面図である。図5は、図4の線A−Aに沿って切断した操舵センサ15の断面図である。なお、図5には、説明の便宜上、操舵軸8が第1歯車部材21の第1歯車部材本体部21a内に挿入された状態の操舵センサ15の断面図を示してある。図6は、図4の線B−Bに沿って切断したカバー部材24および付勢部41の断面図である。 FIG. 4 is a plan view of the steering sensor 15 of the first embodiment. FIG. 5 is a cross-sectional view of the steering sensor 15 cut along the line AA of FIG. Note that FIG. 5 shows a cross-sectional view of the steering sensor 15 in a state where the steering shaft 8 is inserted into the first gear member main body 21a of the first gear member 21 for convenience of explanation. FIG. 6 is a cross-sectional view of the cover member 24 and the urging portion 41 cut along the line BB of FIG.

図4に示すように、カバー部材24は、カバー部材操舵軸挿入孔37の周囲において、カバー部材24の周縁部から径方向外側に矩形状に拡張された3つの拡張部42,43,44を有している。これらの拡張部42,43,44には、第1〜第3係止部挿入孔45,46,47がそれぞれ形成されている。第1〜第3係止部挿入孔45,46,47には、ケーシング部材20の第1〜第3カバー部材係止部28,29,30がそれぞれ挿入される。 As shown in FIG. 4, the cover member 24 has three expansion portions 42, 43, 44 that are radially outwardly expanded from the peripheral edge portion of the cover member 24 around the cover member steering shaft insertion hole 37. Have. First to third locking portion insertion holes 45, 46, 47 are formed in these expansion portions 42, 43, 44, respectively. The first to third cover member locking portions 28, 29, 30 of the casing member 20 are inserted into the first to third locking portion insertion holes 45, 46, 47, respectively.

第1〜第3係止部挿入孔45,46,47は、径方向に沿って切断した断面が矩形をなすように形成されており、カバー部材24の周縁部において所定の間隔に配置されている。ここで、第1〜第3係止部挿入孔45,46,47は、操舵軸8の中心軸線M1から径方向に同じ距離D1だけ離間した位置にそれぞれ配置されている。第1〜第3係止部挿入孔45,46,47と中心軸線M1との間の距離D1は、操舵軸8の中心軸線M1と第2歯車部材22の中心軸線M2との間の距離D2、および中心軸線M1と第3歯車部材23の中心軸線M3との間の距離D3よりも短くなっている。 The first to third locking portion insertion holes 45, 46, 47 are formed so that the cross sections cut along the radial direction form a rectangular shape, and are arranged at predetermined intervals on the peripheral edge portion of the cover member 24. There is. Here, the first to third locking portion insertion holes 45, 46, 47 are arranged at positions separated from the central axis M1 of the steering shaft 8 by the same distance D1 in the radial direction. The distance D1 between the first to third locking portion insertion holes 45, 46, 47 and the central axis M1 is the distance D2 between the central axis M1 of the steering shaft 8 and the central axis M2 of the second gear member 22. , And the distance D3 between the central axis M1 and the central axis M3 of the third gear member 23.

ケーシング部材20は、弾性材料、例えば合成樹脂によって形成され、板状の基部35と、この基部35と一体に形成された第1〜第3カバー部材係止部28,29,30と、同じく基部35と一体に形成された3つのストッパ部48(図5には2つのストッパ部48のみを図示)と、を備えている。 The casing member 20 is formed of an elastic material, for example, a synthetic resin, and has a plate-shaped base portion 35 and the first to third cover member locking portions 28, 29, 30 integrally formed with the base portion 35, as well as a base portion. It includes three stopper portions 48 integrally formed with the 35 (only two stopper portions 48 are shown in FIG. 5).

基部35は、図5に示すように、基板25と平行に延びる姿勢で配置されており、基部35の中央に、径方向に沿って切断した断面が円形のケーシング部材操舵軸挿入孔26を有している。このケーシング部材操舵軸挿入孔26の周縁部には、基部35から第1側に向かって軸方向に突出した環状の突部49が形成されており、この突部49は、第1歯車部材21の第1歯部21bの環状の下端面21cと当接することで、第1歯車部材21の第1側から第2側への移動を規制する。 As shown in FIG. 5, the base portion 35 is arranged in a posture extending parallel to the substrate 25, and has a casing member steering shaft insertion hole 26 having a circular cross section cut along the radial direction in the center of the base portion 35. doing. An annular protrusion 49 protruding axially from the base 35 toward the first side is formed on the peripheral edge of the casing member steering shaft insertion hole 26, and the protrusion 49 is the first gear member 21. By contacting the annular lower end surface 21c of the first tooth portion 21b, the movement of the first gear member 21 from the first side to the second side is restricted.

第1カバー部材係止部28は、合成樹脂からなり、図5に示すように、板状の基部35から軸方向に延びる第1カバー部材係止部本体部28aと、この第1カバー部材係止部本体部28aの先端に形成された第1係止突起28bと、を備えている。 The first cover member locking portion 28 is made of synthetic resin, and as shown in FIG. 5, the first cover member locking portion main body portion 28a extending in the axial direction from the plate-shaped base portion 35 and the first cover member engaging portion 28a. It includes a first locking projection 28b formed at the tip of the stop body 28a.

第1カバー部材係止部本体部28aは、径方向において第1係止部挿入孔45の中心よりも外側寄りの位置で、基部35から第1側に向かって軸方向に突出する棒形状に形成されている。この第1カバー部材係止部本体部28aは、可撓性を有しており、径方向に弾性変形可能に構成されている。 The first cover member locking portion main body 28a has a rod shape that protrudes axially from the base 35 toward the first side at a position closer to the outside than the center of the first locking portion insertion hole 45 in the radial direction. It is formed. The first cover member locking portion main body 28a has flexibility and is configured to be elastically deformable in the radial direction.

第1係止突起28bは、第1カバー部材係止部本体部28aの先端の外周部から径方向外側にフック状に突出するように第1カバー部材係止部本体部28aと一体に形成されている。図5に示すように、径方向に沿った第1係止突起28bの最大の厚みTmは、径方向に沿った第1係止部挿入孔45の幅Lよりも小さくなっている。第1カバー部材係止部28が第1係止部挿入孔45に挿入された状態では、第1係止部挿入孔45に隣接したカバー部材24の第1係止突起当接部24aが、第1係止突起28bと径方向にオーバーラップしている。換言すれば、第1係止突起28bは、図5に示すように、カバー部材24の上面において第1係止部挿入孔45の外側縁部である第1係止突起当接部24aに係止することで、第1〜第3歯車部材21,22,23を収容したケーシング部材20からのカバー部材24の脱落を抑制する。 The first locking projection 28b is integrally formed with the first cover member locking portion main body 28a so as to project radially outward from the outer peripheral portion of the tip of the first cover member locking portion main body 28a in a hook shape. ing. As shown in FIG. 5, the maximum thickness Tm of the first locking projection 28b along the radial direction is smaller than the width L of the first locking portion insertion hole 45 along the radial direction. In a state where the first cover member locking portion 28 is inserted into the first locking portion insertion hole 45, the first locking projection contact portion 24a of the cover member 24 adjacent to the first locking portion insertion hole 45 becomes It overlaps with the first locking projection 28b in the radial direction. In other words, as shown in FIG. 5, the first locking projection 28b engages with the first locking projection contact portion 24a, which is the outer edge portion of the first locking portion insertion hole 45 on the upper surface of the cover member 24. By stopping, the cover member 24 is prevented from falling off from the casing member 20 accommodating the first to third gear members 21, 22, 23.

第2カバー部材係止部29は、第1カバー部材係止部28と同様の形状に構成されており、棒形状をなす第2カバー部材係止部本体部29a(図3参照)と、この第2カバー部材係止部本体部29aの先端に形成されたフック状の第2係止突起29b(図3参照)と、を備えている。第2係止突起29bは、第2係止部挿入孔46の外側縁部の図示せぬ第2係止突起当接部に係止する。 The second cover member locking portion 29 has the same shape as the first cover member locking portion 28, and has a rod-shaped second cover member locking portion main body portion 29a (see FIG. 3) and the rod-shaped second cover member locking portion 29a (see FIG. 3). A hook-shaped second locking projection 29b (see FIG. 3) formed at the tip of the second cover member locking portion main body 29a is provided. The second locking projection 29b is locked to the not shown second locking projection abutting portion of the outer edge portion of the second locking portion insertion hole 46.

第3カバー部材係止部30は、第1および第2カバー部材係止部28,29と同様の形状に構成されており、図5に示すように、棒形状をなす第2カバー部材係止部本体部30aと、この第2カバー部材係止部本体部30aの先端に形成されたフック状の第3係止突起30bと、を備えている。第3係止突起30bは、第3係止部挿入孔47の外側縁部に隣接した第3係止突起当接部24bに係止する。 The third cover member locking portion 30 has the same shape as the first and second cover member locking portions 28 and 29, and as shown in FIG. 5, the second cover member locking portion 30 has a rod shape. The portion main body portion 30a and a hook-shaped third locking projection 30b formed at the tip of the second cover member locking portion main body portion 30a are provided. The third locking projection 30b is locked to the third locking projection contact portion 24b adjacent to the outer edge portion of the third locking portion insertion hole 47.

第1〜3カバー部材係止部28,29,30よりも径方向内側の位置では、基部35から、棒形状をなすストッパ部48が、第1側に向かって軸方向に突出している。ストッパ部48の突出長さは、軸方向に沿った第1〜第3カバー部材係止部28,29,30の長さよりも短くなっている。ストッパ部48の第1側の端部48aが、カバー部材24の第2側の面24cと対向している。ストッパ部48は、第1側から第2側へとカバー部材24を移動させてケーシング部材20に組み付ける際に、カバー部材24の挿入位置を規制する規制部として機能する。 At positions radially inside the first to third cover member locking portions 28, 29, 30, a rod-shaped stopper portion 48 projects axially from the base portion 35 toward the first side. The protruding length of the stopper portion 48 is shorter than the length of the first to third cover member locking portions 28, 29, 30 along the axial direction. The first side end portion 48a of the stopper portion 48 faces the second side surface 24c of the cover member 24. The stopper portion 48 functions as a regulating portion that regulates the insertion position of the cover member 24 when the cover member 24 is moved from the first side to the second side and assembled to the casing member 20.

また、図4に示すように、カバー部材24は、第2および第3貫通孔38,39の周囲において、カバー部材24の外周縁部から径方向外側に矩形状に拡張された3つの拡張部50をさらに有している。これらの拡張部50には、付勢部挿入孔51がそれぞれ形成されており、この付勢部挿入孔51には、付勢部41が挿入される。付勢部41は、弾性材料、例えば合成樹脂によって形成されており、ケーシング部材20の基部35から第1側に向かって軸方向に延びる棒状の付勢部本体部41aと、この付勢部本体部41aの先端において径方向外側に突出する突起部41bと、を備えている。付勢部本体部41aは、可撓性を有しており、径方向に弾性変形可能に構成されている。軸方向に沿った突起部41bの断面形状は、台形となっている。ケーシング部材20にカバー部材24を組み付ける際には、図6に示すように、付勢部本体部41aが径方向内側に弾性変形した状態で、突起部41bが、付勢部本体部41aと対向した付勢部当接部51aに弾性的に当接している。これにより、組付時のケーシング部材20に対するカバー部材24の径方向のガタツキが抑制される。 Further, as shown in FIG. 4, the cover member 24 has three expansion portions that are radially outwardly extended from the outer peripheral edge portion of the cover member 24 around the second and third through holes 38 and 39. It also has 50. An urging portion insertion hole 51 is formed in each of these expansion portions 50, and the urging portion 41 is inserted into the urging portion insertion hole 51. The urging portion 41 is made of an elastic material, for example, a synthetic resin, and has a rod-shaped urging portion main body 41a extending axially from the base 35 of the casing member 20 toward the first side, and the urging portion main body. A protrusion 41b that projects radially outward at the tip of the portion 41a is provided. The urging portion main body portion 41a has flexibility and is configured to be elastically deformable in the radial direction. The cross-sectional shape of the protrusion 41b along the axial direction is trapezoidal. When assembling the cover member 24 to the casing member 20, as shown in FIG. 6, the protrusion 41b faces the urging portion main body 41a in a state where the urging portion main body 41a is elastically deformed inward in the radial direction. It is elastically in contact with the urging portion abutting portion 51a. As a result, the radial rattling of the cover member 24 with respect to the casing member 20 at the time of assembly is suppressed.

また、図5に示すように、操舵軸8には、その外周部に環状溝が形成されており、この環状溝に、弾性材料、例えばゴムからなる環状の伝達部材52が嵌め込まれている。伝達部材52は、第1歯車部材本体部21aと操舵軸8との間に配置される前の状態、つまり自然長の状態における径方向寸法が、環状溝8aの溝底面と第1歯車部材本体部21aの内周面との間の隙間の径方向寸法よりも大きくなるように設定されている。これにより、伝達部材52は、図5に示すように第1歯車部材本体部21aと操舵軸8との間に配置された状態で、径方向へ圧縮変形することで第1歯車部材本体部21aの内周面と操舵軸8の外周面との双方に弾性的に当接する。そして、第1歯車部材本体部21aの内周面および操舵軸8の外周面のそれぞれに、周方向に沿った相対回転移動に対する大きな摩擦抵抗を生じさせることにより、操舵軸8の回転力を第1歯車部材21へ伝達する。 Further, as shown in FIG. 5, the steering shaft 8 is formed with an annular groove on the outer peripheral portion thereof, and an annular transmission member 52 made of an elastic material, for example, rubber is fitted in the annular groove. The transmission member 52 has a radial dimension before being arranged between the first gear member main body 21a and the steering shaft 8, that is, in a state of natural length, which is the groove bottom surface of the annular groove 8a and the first gear member main body. It is set to be larger than the radial dimension of the gap between the inner peripheral surface of the portion 21a. As a result, the transmission member 52 is placed between the first gear member main body 21a and the steering shaft 8 as shown in FIG. 5, and is compressed and deformed in the radial direction to cause the first gear member main body 21a. Elastically abuts on both the inner peripheral surface of the steering shaft 8 and the outer peripheral surface of the steering shaft 8. Then, a large frictional resistance is generated on the inner peripheral surface of the first gear member main body 21a and the outer peripheral surface of the steering shaft 8 against relative rotational movement along the circumferential direction, so that the rotational force of the steering shaft 8 is increased. 1 Transmit to the gear member 21.

かかる舵角センサ18では、運転者によるステアリングホイール4への入力により、操舵軸8が回転すると、この操舵軸8の回転力が伝達部材52による摩擦抵抗によって第1歯車部材21へ伝達されることにより、第1歯車部材21が回転する。そして、この第1歯車部材21の回転に伴って、第1歯車部材21と噛み合う第2歯車部材22が回転し、さらに、第2歯車部材22と噛み合う第3歯車部材23が回転する。第2および第3歯車部材22,23の回転角は、第2および第3歯車部材用回転検出センサ33,34によって検出される。そして、第2および第3歯車部材22,23の回転角に基づいて、電子制御ユニット13内のマイクロプロセッサ等により演算を行うことで、操舵軸8の回転角(舵角)が求められる。 In such a steering angle sensor 18, when the steering shaft 8 is rotated by the input to the steering wheel 4 by the driver, the rotational force of the steering shaft 8 is transmitted to the first gear member 21 by the frictional resistance of the transmission member 52. As a result, the first gear member 21 rotates. Then, with the rotation of the first gear member 21, the second gear member 22 that meshes with the first gear member 21 rotates, and further, the third gear member 23 that meshes with the second gear member 22 rotates. The rotation angles of the second and third gear members 22 and 23 are detected by the rotation detection sensors 33 and 34 for the second and third gear members. Then, the rotation angle (steering angle) of the steering shaft 8 is obtained by performing a calculation by a microprocessor or the like in the electronic control unit 13 based on the rotation angles of the second and third gear members 22 and 23.

図7は、ケーシング部材20へのカバー部材24の組付工程を示す工程図である。図8は、ケーシング部材20のケーシング部材操舵軸挿入孔26およびカバー部材24のカバー部材操舵軸挿入孔37への操舵軸8の挿入工程を示す工程図である。図9は、操舵軸8の挿入後のケーシング部材20およびカバー部材24等の状態を示す説明図である。 FIG. 7 is a process diagram showing a process of assembling the cover member 24 to the casing member 20. FIG. 8 is a process diagram showing a process of inserting the steering shaft 8 into the casing member steering shaft insertion hole 26 of the casing member 20 and the cover member steering shaft insertion hole 37 of the cover member 24. FIG. 9 is an explanatory view showing the state of the casing member 20, the cover member 24, and the like after the steering shaft 8 is inserted.

なお、図7〜図9では、第2カバー部材係止部29および第2係止部挿入孔46を省略してあるが、これらは、第1および第3カバー部材係止部28,30および第1および第3係止部挿入孔45,47と同様に機能する。また、図7〜図9では、第1歯車部材21を破線で示してある。 Although the second cover member locking portion 29 and the second locking portion insertion hole 46 are omitted in FIGS. 7 to 9, these are the first and third cover member locking portions 28 and 30 and the third cover member locking portions 28 and 30. It functions in the same manner as the first and third locking portion insertion holes 45 and 47. Further, in FIGS. 7 to 9, the first gear member 21 is shown by a broken line.

これより、ケーシング部材20に対するカバー部材24および操舵軸8の組付方法について説明する。 Hereinafter, a method of assembling the cover member 24 and the steering shaft 8 to the casing member 20 will be described.

先ず、ケーシング部材20の歯車収容部27内に第1〜第3歯車部材21,22,23を収容する(図3参照)。第1〜第3歯車部材21,22,23が収容された状態では、基部35から軸方向に突出した突部49が、第1歯車部材21の第1歯部21bの環状の下端面21cに当接している(図5参照)。また、第1歯車部材21の第1歯車部材本体部21aがケーシング部材操舵軸挿入孔26およびカバー部材操舵軸挿入孔37内に挿入されている。 First, the first to third gear members 21, 22, and 23 are accommodated in the gear accommodating portion 27 of the casing member 20 (see FIG. 3). In the state where the first to third gear members 21, 22, and 23 are housed, the protrusion 49 protruding in the axial direction from the base 35 is formed on the annular lower end surface 21c of the first tooth portion 21b of the first gear member 21. They are in contact (see FIG. 5). Further, the first gear member main body 21a of the first gear member 21 is inserted into the casing member steering shaft insertion hole 26 and the cover member steering shaft insertion hole 37.

次に、図7に示すように、ケーシング部材20にカバー部材24を組み付ける。組付時には、第1および第3カバー部材係止部28,30が第1および第3係止部挿入孔45,47内に挿入されるように、ケーシング部材20に対し、カバー部材24を第1側から第2側へと下降させる。このカバー部材24の下降時には、ダウエルピン36が各ダウエルピン用挿入孔40を貫通し、さらに、各付勢部41が各付勢部挿入孔51に挿入された状態となるようにする(図6参照)。これにより、突起部41bが、付勢部当接部51aに弾性的に当接し、ケーシング部材20に対するカバー部材24の径方向のガタツキが抑制された状態となる。
各ストッパ部48の第1側の端部48aがカバー部材24の第2側の面24cに当接したところで、第1および第3カバー部材係止部28,30の第1および第3係止突起28b,30bが、所謂スナップフィットにより、カバー部材24の第1および第3係止突起当接部24a,24bに係止する。
Next, as shown in FIG. 7, the cover member 24 is assembled to the casing member 20. At the time of assembly, the cover member 24 is attached to the casing member 20 so that the first and third cover member locking portions 28 and 30 are inserted into the first and third locking portion insertion holes 45 and 47. It is lowered from the 1st side to the 2nd side. When the cover member 24 is lowered, the dowel pin 36 penetrates each dowel pin insertion hole 40, and each urging portion 41 is inserted into each urging portion insertion hole 51 (see FIG. 6). ). As a result, the protrusion 41b elastically contacts the urging portion contact portion 51a, and the radial rattling of the cover member 24 with respect to the casing member 20 is suppressed.
When the first end portion 48a of each stopper portion 48 comes into contact with the second side surface 24c of the cover member 24, the first and third locking portions 28 and 30 of the first and third cover member locking portions 28 and 30 are locked. The protrusions 28b and 30b are locked to the first and third locking protrusion contact portions 24a and 24b of the cover member 24 by a so-called snap fit.

次に、図7に示す状態のケーシング部材20およびカバー部材24が図示せぬセンサハウジング内に配置された状態で、図8に示すように、第1歯車部材本体部21aに操舵軸8を挿入する。 Next, with the casing member 20 and the cover member 24 in the state shown in FIG. 7 arranged in the sensor housing (not shown), the steering shaft 8 is inserted into the first gear member main body 21a as shown in FIG. To do.

操舵軸8の挿入時には、第1歯車部材本体部21aの内周面と伝達部材52との間に生じる摩擦力に基づき、第1歯車部材21の第1歯部21bは、操舵軸8によって第1側へと引きずられ、カバー部材24に当接する。これにより、カバー部材24は、押し上げられ、第1側に撓む。つまり、カバー部材24は、軸方向に沿った断面が、ステアリングホイール4が位置する側である第1側に凸となる円弧状に変形する。 When the steering shaft 8 is inserted, the first tooth portion 21b of the first gear member 21 is moved by the steering shaft 8 based on the frictional force generated between the inner peripheral surface of the first gear member main body 21a and the transmission member 52. It is dragged to the 1 side and comes into contact with the cover member 24. As a result, the cover member 24 is pushed up and bends to the first side. That is, the cover member 24 is deformed into an arc shape in which the cross section along the axial direction is convex toward the first side on which the steering wheel 4 is located.

そして、第1側に操舵軸8をさらに挿入していくと、第1および第3係止突起28b,30bが第1および第3係止突起当接部24a,24bに当たることにより、第1側へのカバー部材24の移動が規制される。その後、カバー部材24の移動の規制が維持されたまま、操舵軸8の挿入が完了する。 Then, when the steering shaft 8 is further inserted into the first side, the first and third locking projections 28b and 30b hit the first and third locking projection contact portions 24a and 24b, so that the first side The movement of the cover member 24 to is restricted. After that, the insertion of the steering shaft 8 is completed while the regulation of the movement of the cover member 24 is maintained.

また、操舵軸8の挿入が完了した状態では、図9に示すように、ストッパ部48の第1側の端部48aがカバー部材24の第2側の面24cに当接した状態で、第1および第3係止突起28b,30bは、所謂スナップフィットにより、第1および第3係止突起当接部24a,24bに係止し、カバー部材24の固定状態が維持される。また、歯車係止部54の一対の歯車係止突起54b,54b(図2参照)が、所謂スナップフィットにより、操舵軸8の図示せぬ係止溝に係合している。 Further, when the insertion of the steering shaft 8 is completed, as shown in FIG. 9, the first side end portion 48a of the stopper portion 48 is in contact with the second side surface 24c of the cover member 24, and the second portion is in contact with the second side surface 24c. The first and third locking projections 28b and 30b are locked to the first and third locking projection contact portions 24a and 24b by so-called snap fit, and the fixed state of the cover member 24 is maintained. Further, a pair of gear locking projections 54b, 54b (see FIG. 2) of the gear locking portion 54 are engaged with a locking groove (not shown) of the steering shaft 8 by so-called snap fit.

[第1の実施例の効果]
一般に、舵角センサのケーシング部材へのカバー部材および操舵軸の組付時には、ケーシング部材に歯車部材を収容し、ケーシング部材の開口面を板状のカバー部材によって閉塞したうえで、環状の弾性部材を具備した操舵軸を、ケーシング部材側から歯車部材の貫通穴に挿入していく。操舵軸の挿入の際には、歯車部材と弾性部材との間の摩擦力により、歯車部材が、操舵軸に引きずられて持ち上げられ、板状のカバー部材に当接する。
[Effect of the first embodiment]
Generally, when assembling the cover member and the steering shaft to the casing member of the rudder angle sensor, the gear member is housed in the casing member, the opening surface of the casing member is closed by the plate-shaped cover member, and then the annular elastic member. The steering shaft provided with the above is inserted into the through hole of the gear member from the casing member side. When the steering shaft is inserted, the gear member is dragged by the steering shaft and lifted by the frictional force between the gear member and the elastic member, and comes into contact with the plate-shaped cover member.

ここで、ケーシング部材へのカバー部材の組み付けを簡易な固定手段により行う場合には、カバー部材がケーシング部材から脱落する虞があった。 Here, when the cover member is assembled to the casing member by a simple fixing means, there is a risk that the cover member may fall off from the casing member.

一方、ケーシング部材へのカバー部材の組み付けをボルト締結により行う場合には、ケーシング部材に対しカバー部材を位置決めした後、ボルトによって締め付ける必要があり、カバー部材の組付性が悪化する虞があった。 On the other hand, when assembling the cover member to the casing member by bolting, it is necessary to position the cover member with respect to the casing member and then tighten the cover member with bolts, which may deteriorate the assembling property of the cover member. ..

第1の実施例では、ステアリングホイール4の回転に伴い回転する操舵軸8を備える舵角センサ18は、ケーシング部材20であって、ケーシング部材操舵軸挿入孔26と、歯車収容部27と、第1カバー部材係止部28を備え、ケーシング部材操舵軸挿入孔26は、操舵軸8を挿入可能であって、第1カバー部材係止部28は、第1カバー部材係止部本体部28aと、第1係止突起28bを有し、第1カバー部材係止部本体部28aは、操舵軸8の回転軸線M1の方向に沿って延びる棒形状を有し、操舵軸8の回転軸線M1の径方向に弾性変形可能であって、第1係止突起28bは、第1カバー部材係止部本体部28aに設けられ、操舵軸8の回転軸線M1の径方向の外側に向かって突出する形状を有している、ケーシング部材20と、第1歯車部材21であって、第1歯車部材本体部21aと、複数の第1歯部21bを備え、歯車収容部27内に設けられ、操舵軸8と一体に回転可能であって、第1歯車部材本体部21aは、筒形状を有し、内部に操舵軸8を挿入可能であって、複数の第1歯部21bは、操舵軸8の回転軸線M1の径方向において第1歯車部材本体部21aの外側に設けられた外歯である、第1歯車部材21と、第2歯車部材22であって、複数の第2歯部22bを備え、歯車収容部27内に回転可能に設けられ、複数の第2歯部22bは、複数の第1歯部21bと噛合う外歯である、第2歯車部材22と、第3歯車部材23であって、複数の第3歯部23bを備え、歯車収容部27内に回転可能に設けられ、複数の第3歯部23bは、複数の第2歯部22bと互いに割り切れない数の歯を有し、第1歯車部材21の回転に伴い回転する第3歯車部材23と、第2歯車部材用磁性部材31であって、第2歯車部材22に設けられ、第2歯車部材22の回転軸線M2の周りにN極とS極が並んでいる第2歯車部材用磁性部材31と、第3歯車部材用磁性部材32であって、第3歯車部材23に設けられ、第3歯車部材23の回転軸線M3の周りにN極とS極が並んでいる第3歯車部材用磁性部材32と、第2歯車部材用回転検出センサ33であって、第2歯車部材用磁性部材31の磁界の変化に基づき第2歯車部材22の回転角を検出する第2歯車部材用回転検出センサ33と、第3歯車部材用回転検出センサ34であって、第3歯車部材用磁性部材32の磁界の変化に基づき第3歯車部材23の回転角を検出する第3歯車部材用回転検出センサ34と、カバー部材24であって、カバー部材操舵軸挿入孔37と、第1係止部挿入孔45と、第1係止突起当接部24aを備え、歯車収容部27より操舵軸8の回転軸線M1の方向の一方である第1側に設けられ、カバー部材操舵軸挿入孔37は、操舵軸8を挿入可能であって、第1係止部挿入孔45は、第1係止突起28bが第1係止部挿入孔45を操舵軸8の回転軸線M1の方向において、第1側の反対側である第2側から第1側に向かって挿入可能であって、第1係止突起当接部24aは、操舵軸8の回転軸線M1の径方向において第1係止部挿入孔45の外側であって、第1係止突起28bとオーバーラップするように設けられている、第1係止突起当接部24aと、を有する。 In the first embodiment, the steering angle sensor 18 including the steering shaft 8 that rotates with the rotation of the steering wheel 4 is the casing member 20, the casing member steering shaft insertion hole 26, the gear accommodating portion 27, and the first. 1 Cover member locking portion 28 is provided, the casing member steering shaft insertion hole 26 is capable of inserting the steering shaft 8, and the first cover member locking portion 28 is the first cover member locking portion main body 28a. The first cover member locking portion main body 28a has a rod shape extending along the direction of the rotation axis M1 of the steering shaft 8 and has a rod shape extending along the direction of the rotation axis M1 of the steering shaft 8. The shape is elastically deformable in the radial direction, and the first locking projection 28b is provided on the main body portion 28a of the locking portion of the first cover member and projects outward in the radial direction of the rotation axis M1 of the steering shaft 8. A casing member 20 and a first gear member 21, the first gear member main body portion 21a, and a plurality of first tooth portions 21b, which are provided in the gear accommodating portion 27 and have a steering shaft. The first gear member main body 21a is rotatable integrally with the eighth gear, the first gear member main body portion 21a has a tubular shape, the steering shaft 8 can be inserted therein, and the plurality of first tooth portions 21b are of the steering shaft 8. The first gear member 21 which is an external tooth provided outside the first gear member main body 21a in the radial direction of the rotation axis M1 and the second gear member 22 which are a plurality of second tooth portions 22b are provided. The second gear member 22 and the third gear member 23, which are rotatably provided in the gear accommodating portion 27 and the plurality of second tooth portions 22b are external teeth that mesh with the plurality of first tooth portions 21b. Therefore, a plurality of third tooth portions 23b are provided and rotatably provided in the gear accommodating portion 27, and the plurality of third tooth portions 23b have a number of teeth that are not divisible by each other with the plurality of second tooth portions 22b. A third gear member 23 that rotates with the rotation of the first gear member 21, and a magnetic member 31 for the second gear member, which are provided on the second gear member 22 and have a rotation axis M2 of the second gear member 22. The magnetic member 31 for the second gear member and the magnetic member 32 for the third gear member in which the N pole and the S pole are arranged around the third gear member 23, which are provided on the third gear member 23 and rotate the third gear member 23. The magnetic member 32 for the third gear member in which the north and south poles are arranged around the axis M3 and the rotation detection sensor 33 for the second gear member, and the change in the magnetic field of the magnetic member 31 for the second gear member. Based on the change in the magnetic field of the second gear member rotation detection sensor 33 that detects the rotation angle of the second gear member 22 and the third gear member rotation detection sensor 34, and the third gear member magnetic member 32. Rotation angle of the third gear member 23 The rotation detection sensor 34 for the third gear member, the cover member 24, the cover member steering shaft insertion hole 37, the first locking portion insertion hole 45, and the first locking projection contact portion 24a. The gear accommodating portion 27 is provided on the first side of the steering shaft 8 in the direction of the rotation axis M1, and the cover member steering shaft insertion hole 37 is capable of inserting the steering shaft 8 and is first locked. In the portion insertion hole 45, the first locking projection 28b directs the first locking portion insertion hole 45 from the second side opposite to the first side to the first side in the direction of the rotation axis M1 of the steering shaft 8. The first locking projection contact portion 24a is outside the first locking portion insertion hole 45 in the radial direction of the rotation axis M1 of the steering shaft 8, and is formed with the first locking projection 28b. It has a first locking projection contact portion 24a, which is provided so as to overlap.

この舵角センサ18では、操舵軸8の組付時に、図8に示すように、第1歯車部材本体部21aの内周面と伝達部材52との間に作用する摩擦力により、第1歯車部材21が持ち上げられ、これにより、カバー部材24が、第1側に円弧状に変形する。しかし、上記構成によれば、カバー部材24が変形した状態であっても、図8に示すように径方向外側に突出した第1係止突起28bと第1係止突起当接部24aとが径方向にオーバーラップしているため、第1係止突起28bが第1係止突起当接部24aに効果的に引っ掛かり、カバー部材24の第1側への移動が規制される。従って、第1カバー部材係止部28によるスナップフィットという比較的簡便な構成でありながら、ケーシング部材20からのカバー部材24の脱落を抑制することができる。 In this steering angle sensor 18, as shown in FIG. 8, when the steering shaft 8 is assembled, the first gear is caused by the frictional force acting between the inner peripheral surface of the first gear member main body 21a and the transmission member 52. The member 21 is lifted, whereby the cover member 24 is deformed in an arc shape toward the first side. However, according to the above configuration, even when the cover member 24 is in a deformed state, as shown in FIG. 8, the first locking projection 28b and the first locking projection contact portion 24a projecting outward in the radial direction are formed. Since they overlap in the radial direction, the first locking projection 28b is effectively caught by the first locking projection contact portion 24a, and the movement of the cover member 24 to the first side is restricted. Therefore, it is possible to suppress the cover member 24 from falling off from the casing member 20, although the first cover member locking portion 28 has a relatively simple structure of snap-fitting.

また、第1の実施例では、ケーシング部材20は、付勢部41を備え、カバー部材24は、付勢部挿入孔51と、付勢部当接部51aを備え、付勢部41は、付勢部挿入孔51に挿入され、弾性変形した状態で、付勢部当接部51aに当接している。 Further, in the first embodiment, the casing member 20 includes an urging portion 41, the cover member 24 includes an urging portion insertion hole 51 and an urging portion abutting portion 51a, and the urging portion 41 is provided with the urging portion 41. It is inserted into the urging portion insertion hole 51 and is in contact with the urging portion abutting portion 51a in a state of being elastically deformed.

このように付勢部41が付勢部当接部51aに付勢力を与えることで、ケーシング部材20に対するカバー部材24の径方向のガタツキを抑制しながら、ケーシング部材20にカバー部材24を安定して組み付けることができる。 By applying the urging force to the urging portion abutting portion 51a by the urging portion 41 in this way, the cover member 24 is stabilized on the casing member 20 while suppressing the radial rattling of the cover member 24 with respect to the casing member 20. Can be assembled.

さらに、第1の実施例では、ケーシング部材20は、ダウエルピン36を備え、カバー部材24は、ダウエルピン36が挿入されるダウエルピン用挿入孔40を備える。 Further, in the first embodiment, the casing member 20 includes a dowel pin 36, and the cover member 24 includes a dowel pin insertion hole 40 into which the dowel pin 36 is inserted.

これにより、ケーシング部材20に対するカバー部材24の位置決め精度が向上する。 As a result, the positioning accuracy of the cover member 24 with respect to the casing member 20 is improved.

また、第1の実施例では、第1係止部挿入孔45は、操舵軸8の回転軸線M1の径方向において、操舵軸8の回転軸線M1からの距離D1が、第2歯車部材22の回転軸線M2および第3歯車部材23の回転軸線M3よりも近い場所に設けられている。 Further, in the first embodiment, in the first locking portion insertion hole 45, the distance D1 from the rotation axis M1 of the steering shaft 8 is the distance D1 of the second gear member 22 in the radial direction of the rotation axis M1 of the steering shaft 8. The rotary axis M2 and the third gear member 23 are provided closer to the rotary axis M3.

操舵軸8に近いカバー部材24の部位は、操舵軸8の挿入時に荷重を受けやすく、撓み易くなっている。そのため、回転軸線M2,M3よりも操舵軸8の回転軸線M1に近い箇所で第1係止突起28bを第1係止突起当接部24aに当接させることで、より効果的にカバー部材24の脱落を抑制することができる。 The portion of the cover member 24 close to the steering shaft 8 is likely to receive a load when the steering shaft 8 is inserted, and is easily bent. Therefore, the cover member 24 is more effectively brought into contact with the first locking projection contact portion 24a at a position closer to the rotating axis M1 of the steering shaft 8 than the rotating axes M2 and M3. Can be suppressed from falling off.

さらに、第1の実施例では、ケーシング部材20は、第2カバー部材係止部29と、第3カバー部材係止部30を備え、第2カバー部材係止部29は、第2カバー部材係止部本体部29aと、第2係止突起29bを有し、第2カバー部材係止部本体部29aは、操舵軸8の回転軸線M1の方向に沿って延びる棒形状を有し、操舵軸8の回転軸線M1の径方向に弾性変形可能であって、第2係止突起29bは、第2カバー部材係止部本体部29aに設けられ、操舵軸8の回転軸線M1の径方向の外側に向かって突出する形状を有しており、第3カバー部材係止部30は、第2カバー部材係止部本体部30aと、第3係止突起30bを有し、第2カバー部材係止部本体部30aは、操舵軸8の回転軸線M1の方向に沿って延びる棒形状を有し、操舵軸8の回転軸線M1の径方向に弾性変形可能であって、第3係止突起30bは、第2カバー部材係止部本体部30aに設けられ、操舵軸8の回転軸線M1の径方向の外側に向かって突出する形状を有しており、カバー部材24は、第2係止部挿入孔46と、第2係止突起当接部と、第3係止部挿入孔47と、第3係止突起当接部24bを備え、第2係止部挿入孔46は、第2係止突起29bが第2係止部挿入孔46を操舵軸8の回転軸線M1の方向において第2側から第1側に向かって挿入可能であって、操舵軸8の回転軸線M1の径方向において、操舵軸8の回転軸線M1からの距離D1が、第2歯車部材22の回転軸線M2および第3歯車部材23の回転軸線M3よりも近い場所に設けられており、第2係止突起当接部は、操舵軸8の回転軸線M1の径方向において第2係止部挿入孔46の外側であって、第2係止突起29bとオーバーラップするように設けられており、第3係止部挿入孔47は、第3係止突起30bが第3係止部挿入孔47を操舵軸8の回転軸線M1の方向において第2側から第1側に向かって挿入可能であって、操舵軸8の回転軸線M1の径方向において、操舵軸8の回転軸線M1からの距離D1が、第2歯車部材22の回転軸線M2および第3歯車部材23の回転軸線M3よりも近い場所に設けられており、第3係止突起当接部24bは、操舵軸8の回転軸線M1の径方向において第3係止部挿入孔47の外側であって、第3係止突起30bとオーバーラップするように設けられている。 Further, in the first embodiment, the casing member 20 includes a second cover member locking portion 29 and a third cover member locking portion 30, and the second cover member locking portion 29 is a second cover member engaging portion. The stop body portion 29a and the second locking projection 29b are provided, and the second cover member locking portion main body 29a has a rod shape extending along the rotation axis M1 of the steering shaft 8 and has a steering shaft. The second locking projection 29b is elastically deformable in the radial direction of the rotation axis M1 of the second cover member, and is provided on the main body portion 29a of the locking portion of the second cover member. The third cover member locking portion 30 has a second cover member locking portion main body portion 30a and a third locking projection 30b, and has a shape protruding toward the second cover member. The main body portion 30a has a rod shape extending along the direction of the rotation axis M1 of the steering shaft 8, is elastically deformable in the radial direction of the rotation axis M1 of the steering shaft 8, and the third locking projection 30b is , The second cover member is provided on the main body portion 30a of the locking portion, and has a shape protruding outward in the radial direction of the rotation axis M1 of the steering shaft 8, and the cover member 24 is inserted into the second locking portion. The hole 46, the second locking protrusion contact portion, the third locking portion insertion hole 47, and the third locking protrusion contact portion 24b are provided, and the second locking portion insertion hole 46 is the second locking. The protrusion 29b can insert the second locking portion insertion hole 46 from the second side toward the first side in the direction of the rotation axis M1 of the steering shaft 8, and in the radial direction of the rotation axis M1 of the steering shaft 8. The distance D1 of the steering shaft 8 from the rotation axis M1 is provided closer to the rotation axis M2 of the second gear member 22 and the rotation axis M3 of the third gear member 23, and the second locking projection contact portion is provided. Is outside the second locking portion insertion hole 46 in the radial direction of the rotation axis M1 of the steering shaft 8 and is provided so as to overlap the second locking projection 29b, and the third locking portion is inserted. The hole 47 is such that the third locking projection 30b can insert the third locking portion insertion hole 47 from the second side toward the first side in the direction of the rotation axis M1 of the steering shaft 8. In the radial direction of the rotating axis M1, the distance D1 of the steering shaft 8 from the rotating axis M1 is provided closer to the rotating axis M2 of the second gear member 22 and the rotating axis M3 of the third gear member 23. The third locking projection contact portion 24b is provided outside the third locking portion insertion hole 47 in the radial direction of the rotation axis M1 of the steering shaft 8 so as to overlap the third locking projection 30b. ing.

このように、第1〜第3係止突起28b,29b,30bによって、操舵軸8から比較的近い3箇所でカバー部材24の第1側への移動を規制するので、1箇所でカバー部材24を係止する場合に比べて、カバー部材24の脱落をより効果的に抑制することができる。 In this way, the first to third locking projections 28b, 29b, and 30b restrict the movement of the cover member 24 to the first side at three locations relatively close to the steering shaft 8, so that the cover member 24 is restricted at one location. The cover member 24 can be prevented from falling off more effectively than in the case of locking the cover member 24.

また、第1の実施例では、第1係止突起28bは、操舵軸8の回転軸線M1の径方向に沿った方向に突出する形状を有する。 Further, in the first embodiment, the first locking projection 28b has a shape protruding in the radial direction of the rotation axis M1 of the steering shaft 8.

このように第1係止突起28bが、カバー部材24の撓みの方向である軸方向と直交する径方向に突出することにより、第1係止突起当接部24aが第1係止突起28bへ引っ掛かり易くなる。 In this way, the first locking projection 28b projects in the radial direction orthogonal to the axial direction, which is the bending direction of the cover member 24, so that the first locking projection contact portion 24a moves to the first locking projection 28b. It becomes easy to get caught.

さらに、第1の実施例では、ケーシング部材20は、ストッパ部48を有し、ストッパ部48は、操舵軸8の回転軸線M1の方向に沿って延びる棒形状を有し、操舵軸8の回転軸線M1の径方向において第1カバー部材係止部28の内側に設けられ、操舵軸8の回転軸線M1の方向の第1側の端部48aが、カバー部材24と対向するように設けられている。 Further, in the first embodiment, the casing member 20 has a stopper portion 48, and the stopper portion 48 has a rod shape extending along the direction of the rotation axis M1 of the steering shaft 8 to rotate the steering shaft 8. It is provided inside the first cover member locking portion 28 in the radial direction of the axis M1, and the end portion 48a on the first side in the direction of the rotation axis M1 of the steering shaft 8 is provided so as to face the cover member 24. There is.

これにより、ケーシング部材20にカバー部材24を組み付ける際、ストッパ部48がカバー部材24と当接する。従って、カバー部材24がケーシング部材20に対し軸方向に過剰に押し込まれることを抑制することができる。また、カバー部材24をストッパ部48に当接させるだけで挿入位置が規定されるから、カバー部材24の組付性が向上する。 As a result, when the cover member 24 is assembled to the casing member 20, the stopper portion 48 comes into contact with the cover member 24. Therefore, it is possible to prevent the cover member 24 from being excessively pushed into the casing member 20 in the axial direction. Further, since the insertion position is defined only by bringing the cover member 24 into contact with the stopper portion 48, the assembling property of the cover member 24 is improved.

また、ストッパ部48が第1カバー部材係止部28の径方向内側に設けられているため、カバー部材操舵軸挿入孔37の付近を力点としてカバー部材24を押し込む際、カバー部材操舵軸挿入孔37からより遠い箇所を力点としてカバー部材24を押し込む場合に比べ、組付時の力をより力点に近い位置で効果的に受けることができる。 Further, since the stopper portion 48 is provided inside the first cover member locking portion 28 in the radial direction, the cover member steering shaft insertion hole is formed when the cover member 24 is pushed in with the vicinity of the cover member steering shaft insertion hole 37 as a force point. Compared with the case where the cover member 24 is pushed in with a point farther from the point of effort, the force at the time of assembly can be effectively received at a position closer to the point of effort.

さらに、第1の実施例では、第1カバー部材係止部28は、ケーシング部材20と一体に形成されている。 Further, in the first embodiment, the first cover member locking portion 28 is integrally formed with the casing member 20.

このため、第1カバー部材係止部28が、ケーシング部材20の最も下側の位置にある基部35から軸方向に延びるので、第1カバー部材係止部本体部28aの軸方向長さが大きく確保される。従って、第1カバー部材係止部本体部28aが撓んだときの内部発生応力を緩和することができる。従って、第1カバー部材係止部28の破損が抑制される。 Therefore, since the first cover member locking portion 28 extends in the axial direction from the base portion 35 located at the lowermost position of the casing member 20, the axial length of the first cover member locking portion main body portion 28a is large. Secured. Therefore, the internally generated stress when the first cover member locking portion main body 28a is bent can be relaxed. Therefore, damage to the first cover member locking portion 28 is suppressed.

また、第1の実施例では、第1カバー部材係止部本体部28aは、操舵軸8の回転軸線M1の径方向において、第1係止部挿入孔45の中心よりも外側寄りに設けられている。 Further, in the first embodiment, the first cover member locking portion main body 28a is provided outside the center of the first locking portion insertion hole 45 in the radial direction of the rotation axis M1 of the steering shaft 8. ing.

このため、第1カバー部材係止部本体部28aと第1係止部挿入孔45の外側孔縁との間の径方向のクリアランスがより小さくなり、第1係止突起当接部24aと第1係止突起28bとが軸方向にオーバーラップする領域が広く確保される。従って、図8に示すようにカバー部材24が軸方向に撓んだときに、第1係止突起当接部24aを第1係止突起28bに引掛かり易くすることができる。 Therefore, the radial clearance between the first cover member locking portion main body portion 28a and the outer hole edge of the first locking portion insertion hole 45 becomes smaller, and the first locking projection contact portion 24a and the first 1 A wide area where the locking projection 28b overlaps in the axial direction is secured. Therefore, as shown in FIG. 8, when the cover member 24 is bent in the axial direction, the first locking projection contact portion 24a can be easily hooked on the first locking projection 28b.

[第2の実施例]
図10(a)は、第1カバー部材係止部28および第2の実施例のカバー部材24の断面図であり、図10(b)は、第1側から見たときの第1カバー部材係止部28および第2の実施例のカバー部材24の平面図である。
[Second Example]
FIG. 10A is a cross-sectional view of the first cover member locking portion 28 and the cover member 24 of the second embodiment, and FIG. 10B is a first cover member when viewed from the first side. It is a top view of the locking portion 28 and the cover member 24 of the second embodiment.

図10(a)および図10(b)に示すように、カバー部材24は、第1カバー部材係止部本体部28aよりも径方向内側に形成され、かつ第1係止部挿入孔45の図10(a)に破線で示す内側孔縁から径方向外側に向かって円弧状に突出する突出部53を有している。本実施例では、突出部53は、第1カバー部材係止部28と当接するように、第1係止部挿入孔45の内側孔縁から径方向外側に延びている。 As shown in FIGS. 10A and 10B, the cover member 24 is formed radially inside the first cover member locking portion main body 28a, and is formed in the first locking portion insertion hole 45. FIG. 10A has a protruding portion 53 that protrudes in an arc shape from the inner hole edge shown by the broken line toward the outside in the radial direction. In this embodiment, the protruding portion 53 extends radially outward from the inner hole edge of the first locking portion insertion hole 45 so as to abut the first cover member locking portion 28.

なお、第1係止部挿入孔45に第1カバー部材係止部28を挿入することができる程度に突出部53が第1係止部挿入孔45を狭めているのであれば、突出部53は、第1カバー部材係止部28と突出部53との間に多少の隙間が形成されるように形成されていても良い。 If the protruding portion 53 narrows the first locking portion insertion hole 45 to such an extent that the first cover member locking portion 28 can be inserted into the first locking portion insertion hole 45, the protruding portion 53 May be formed so that a slight gap is formed between the first cover member locking portion 28 and the protruding portion 53.

[第2の実施例の効果]
第2の実施例では、カバー部材24は、操舵軸8の回転軸線M1の径方向において、第1カバー部材係止部本体部28aより内側に設けられ、操舵軸8の回転軸線M1の径方向の外側に向かって突出する突出部53を有する。
[Effect of the second embodiment]
In the second embodiment, the cover member 24 is provided inside the first cover member locking portion main body 28a in the radial direction of the rotation axis M1 of the steering shaft 8, and is provided in the radial direction of the rotation axis M1 of the steering shaft 8. It has a protruding portion 53 that protrudes toward the outside of the.

これにより、第1係止部挿入孔45の径方向寸法が小さくなり、径方向内側への第1カバー部材係止部28の撓みが抑制される。従って、第1係止突起28bが第1係止突起当接部24aに確実に係止し、ケーシング部材20からのカバー部材24の脱落を効果的に抑制することができる。 As a result, the radial dimension of the first locking portion insertion hole 45 is reduced, and the bending of the first cover member locking portion 28 inward in the radial direction is suppressed. Therefore, the first locking projection 28b can be reliably locked to the first locking projection contact portion 24a, and the cover member 24 can be effectively suppressed from falling off from the casing member 20.

また、第2の実施例では、突出部53は、第1カバー部材係止部28と当接するように設けられている。 Further, in the second embodiment, the protruding portion 53 is provided so as to come into contact with the first cover member locking portion 28.

これにより、径方向内側への第1カバー部材係止部28の撓みがさらに抑制される。従って、ケーシング部材20からのカバー部材24の脱落をさらに効果的に抑制することができる。 As a result, the bending of the first cover member locking portion 28 inward in the radial direction is further suppressed. Therefore, it is possible to more effectively suppress the cover member 24 from falling off from the casing member 20.

以上説明した実施例に基づくステアリング装置用舵角検出装置としては、例えば以下に述べる態様のものが考えられる。 As the steering angle detecting device for the steering device based on the above-described embodiment, for example, the one described below can be considered.

ステアリングホイールの回転に伴い回転する操舵軸を備えるステアリング装置用舵角検出装置は、その一つの態様において、ケーシング部材であって、ケーシング部材操舵軸挿入孔と、歯車収容部と、第1カバー部材係止部を備え、前記ケーシング部材操舵軸挿入孔は、前記操舵軸を挿入可能であって、前記第1カバー部材係止部は、第1カバー部材係止部本体部と、第1係止突起を有し、前記第1カバー部材係止部本体部は、前記操舵軸の回転軸線の方向に沿って延びる棒形状を有し、前記操舵軸の回転軸線の径方向に弾性変形可能であって、前記第1係止突起は、前記第1カバー部材係止部本体部に設けられ、前記操舵軸の回転軸線の径方向の外側に向かって突出する形状を有している、前記ケーシング部材と、第1歯車部材であって、第1歯車部材本体部と、複数の第1歯部を備え、前記歯車収容部内に設けられ、前記操舵軸と一体に回転可能であって、前記第1歯車部材本体部は、筒形状を有し、内部に前記操舵軸を挿入可能であって、前記複数の第1歯部は、前記操舵軸の回転軸線の径方向において前記第1歯車部材本体部の外側に設けられた外歯である、前記第1歯車部材と、第2歯車部材であって、複数の第2歯部を備え、前記歯車収容部内に回転可能に設けられ、前記複数の第2歯部は、前記複数の第1歯部と噛合う外歯である、前記第2歯車部材と、第3歯車部材であって、複数の第3歯部を備え、前記歯車収容部内に回転可能に設けられ、前記複数の第3歯部は、前記複数の第2歯部と互いに割り切れない数の歯を有し、前記第1歯車部材の回転に伴い回転する前記第3歯車部材と、第2歯車部材用磁性部材であって、前記第2歯車部材に設けられ、前記第2歯車部材の回転軸線の周りにN極とS極が並んでいる前記第2歯車部材用磁性部材と、第3歯車部材用磁性部材であって、前記第3歯車部材に設けられ、前記第3歯車部材の回転軸線の周りにN極とS極が並んでいる前記第3歯車部材用磁性部材と、第2歯車部材用回転検出センサであって、前記第2歯車部材用磁性部材の磁界の変化に基づき前記第2歯車部材の回転角を検出する前記第2歯車部材用回転検出センサと、第3歯車部材用回転検出センサであって、前記第3歯車部材用磁性部材の磁界の変化に基づき前記第3歯車部材の回転角を検出する前記第3歯車部材用回転検出センサと、カバー部材であって、カバー部材操舵軸挿入孔と、第1係止部挿入孔と、第1係止突起当接部を備え、前記歯車収容部より前記操舵軸の回転軸線の方向の一方である第1側に設けられ、前記カバー部材操舵軸挿入孔は、前記操舵軸を挿入可能であって、前記第1係止部挿入孔は、前記第1係止突起が前記第1係止部挿入孔を前記操舵軸の回転軸線の方向において、前記第1側の反対側である第2側から前記第1側に向かって挿入可能であって、前記第1係止突起当接部は、前記操舵軸の回転軸線の径方向において前記第1係止部挿入孔の外側であって、前記第1係止突起とオーバーラップするように設けられている、前記第1係止突起当接部と、を有するカバー部材と、を有する。 In one embodiment, the steering angle detection device for a steering device including a steering shaft that rotates with the rotation of the steering wheel is a casing member, that is, a casing member steering shaft insertion hole, a gear accommodating portion, and a first cover member. A locking portion is provided, the steering shaft can be inserted into the casing member steering shaft insertion hole, and the first cover member locking portion is the first cover member locking portion main body and the first locking portion. The first cover member locking portion main body has a protrusion and has a rod shape extending along the direction of the rotation axis of the steering shaft, and is elastically deformable in the radial direction of the rotation axis of the steering shaft. The first locking projection is provided on the main body of the first cover member locking portion, and has a shape that protrudes outward in the radial direction of the rotation axis of the steering shaft. The first gear member is provided with a first gear member main body portion and a plurality of first tooth portions, is provided in the gear accommodating portion, and can rotate integrally with the steering shaft. The gear member main body has a tubular shape, and the steering shaft can be inserted therein, and the plurality of first tooth portions are the first gear member main body in the radial direction of the rotation axis of the steering shaft. The first gear member and the second gear member, which are external teeth provided on the outside of the gear, are provided with a plurality of second tooth portions, and are rotatably provided in the gear accommodating portion. The two-tooth portion includes the second gear member, which is an external tooth that meshes with the plurality of first tooth portions, and a third gear member, which includes a plurality of third tooth portions, and rotates in the gear accommodating portion. The plurality of third gear members, which are possibly provided, have a number of teeth that are not divisible by each other with the plurality of second tooth portions, and the third gear member that rotates with the rotation of the first gear member. The magnetic member for the second gear member, which is provided on the second gear member and has N poles and S poles arranged around the rotation axis of the second gear member, and the magnetic member for the second gear member. The magnetic member for the third gear member, which is provided on the third gear member and has N poles and S poles arranged around the rotation axis of the third gear member, and the magnetic member for the third gear member. A rotation detection sensor for the second gear member, which is a rotation detection sensor for the second gear member that detects the rotation angle of the second gear member based on a change in the magnetic field of the magnetic member for the second gear member, and a third. A rotation detection sensor for a gear member, the rotation detection sensor for the third gear member that detects the rotation angle of the third gear member based on a change in the magnetic field of the magnetic member for the third gear member, and a cover member. And the cover member steering shaft insertion hole, It is provided with a first locking portion insertion hole and a first locking projection contact portion, and is provided on the first side of the gear accommodating portion in the direction of the rotation axis of the steering shaft, and the cover member steering shaft is inserted. The steering shaft can be inserted into the hole, and in the first locking portion insertion hole, the first locking projection inserts the first locking portion insertion hole in the direction of the rotation axis of the steering shaft. It can be inserted from the second side, which is the opposite side of the first side, toward the first side, and the first locking projection contact portion is the first engagement portion in the radial direction of the rotation axis of the steering shaft. It has a cover member having a first locking protrusion contact portion, which is outside the stop insertion hole and is provided so as to overlap the first locking protrusion.

前記ステアリング装置用舵角検出装置の好ましい態様において、前記ケーシング部材は、付勢部を備え、前記カバー部材は、付勢部挿入孔と、付勢部当接部を備え、前記付勢部は、前記付勢部挿入孔に挿入され、弾性変形した状態で、前記付勢部当接部に当接している。 In a preferred embodiment of the steering angle detecting device for a steering device, the casing member includes an urging portion, the cover member includes an urging portion insertion hole, and the urging portion abutting portion. , It is inserted into the urging portion insertion hole and is in contact with the urging portion abutting portion in a state of being elastically deformed.

別の好ましい態様では、前記ステアリング装置用舵角検出装置の態様のいずれかにおいて、前記ケーシング部材は、ダウエルピンを備え、前記カバー部材は、前記ダウエルピンが挿入されるダウエルピン用挿入孔を備える。 In another preferred embodiment, in any of the aspects of the steering angle detector, the casing member comprises a dowel pin and the cover member comprises a dowel pin insertion hole into which the dowel pin is inserted.

別の好ましい態様では、前記ステアリング装置用舵角検出装置の態様のいずれかにおいて、前記第1係止部挿入孔は、前記操舵軸の回転軸線の径方向において、前記操舵軸の回転軸線からの距離が、前記第2歯車部材の回転軸線および前記第3歯車部材の回転軸線よりも近い場所に設けられている。 In another preferred embodiment, in any of the aspects of the steering angle detection device for a steering device, the first locking portion insertion hole is located in the radial direction of the rotation axis of the steering shaft from the rotation axis of the steering shaft. The distance is provided at a position closer to the rotation axis of the second gear member and the rotation axis of the third gear member.

別の好ましい態様では、前記ステアリング装置用舵角検出装置の態様のいずれかにおいて、前記ケーシング部材は、第2カバー部材係止部と、第3カバー部材係止部を備え、前記第2カバー部材係止部は、第2カバー部材係止部本体部と、第2係止突起を有し、前記第2カバー部材係止部本体部は、前記操舵軸の回転軸線の方向に沿って延びる棒形状を有し、前記操舵軸の回転軸線の径方向に弾性変形可能であって、前記第2係止突起は、前記第2カバー部材係止部本体部に設けられ、前記操舵軸の回転軸線の径方向の外側に向かって突出する形状を有しており、前記第3カバー部材係止部は、第3カバー部材係止部本体部と、第3係止突起を有し、前記第3カバー部材係止部本体部は、前記操舵軸の回転軸線の方向に沿って延びる棒形状を有し、前記操舵軸の回転軸線の径方向に弾性変形可能であって、前記第3係止突起は、前記第3カバー部材係止部本体部に設けられ、前記操舵軸の回転軸線の径方向の外側に向かって突出する形状を有しており、前記カバー部材は、第2係止部挿入孔と、第2係止突起当接部と、第3係止部挿入孔と、第3係止突起当接部を備え、前記第2係止部挿入孔は、前記第2係止突起が前記第2係止部挿入孔を前記操舵軸の回転軸線の方向において前記第2側から前記第1側に向かって挿入可能であって、前記操舵軸の回転軸線の径方向において、前記操舵軸の回転軸線からの距離が、前記第2歯車部材の回転軸線および前記第3歯車部材の回転軸線よりも近い場所に設けられており、前記第2係止突起当接部は、前記操舵軸の回転軸線の径方向において前記第2係止部挿入孔の外側であって、前記第2係止突起とオーバーラップするように設けられており、前記第3係止部挿入孔は、前記第3係止突起が前記第3係止部挿入孔を前記操舵軸の回転軸線の方向において前記第2側から前記第1側に向かって挿入可能であって、前記操舵軸の回転軸線の径方向において、前記操舵軸の回転軸線からの距離が、前記第2歯車部材の回転軸線および前記第3歯車部材の回転軸線よりも近い場所に設けられており、前記第3係止突起当接部は、前記操舵軸の回転軸線の径方向において前記第3係止部挿入孔の外側であって、前記第3係止突起とオーバーラップするように設けられている。 In another preferred embodiment, in any of the aspects of the steering angle detection device for a steering device, the casing member includes a second cover member locking portion and a third cover member locking portion, and the second cover member. The locking portion has a second cover member locking portion main body portion and a second locking projection, and the second cover member locking portion main body portion is a rod extending along the direction of the rotation axis of the steering shaft. It has a shape and can be elastically deformed in the radial direction of the rotation axis of the steering shaft. The second locking projection is provided on the main body of the second cover member locking portion, and the rotation axis of the steering shaft. The third cover member locking portion has a third cover member locking portion main body portion and a third locking projection, and has a shape protruding outward in the radial direction of the rudder. The cover member locking portion main body has a rod shape extending along the direction of the rotation axis of the steering shaft, is elastically deformable in the radial direction of the rotation axis of the steering shaft, and has the third locking projection. Is provided on the main body of the third cover member locking portion, and has a shape protruding outward in the radial direction of the rotation axis of the steering shaft, and the cover member is inserted into the second locking portion. The hole, the second locking protrusion contact portion, the third locking portion insertion hole, and the third locking protrusion contact portion are provided, and the second locking protrusion insertion hole is formed by the second locking protrusion. The second locking portion insertion hole can be inserted from the second side toward the first side in the direction of the rotation axis of the steering shaft, and the steering shaft can be inserted in the radial direction of the rotation axis of the steering shaft. The distance from the rotation axis of the second gear member is closer than the rotation axis of the second gear member and the rotation axis of the third gear member, and the second locking projection contact portion is the steering shaft of the steering shaft. The third locking portion insertion hole is provided so as to be outside the second locking portion insertion hole in the radial direction of the rotation axis and overlap with the second locking projection, and the third locking portion insertion hole is the third. The locking projection can insert the third locking portion insertion hole from the second side toward the first side in the direction of the rotation axis of the steering shaft, and in the radial direction of the rotation axis of the steering shaft. The distance of the steering shaft from the rotation axis is closer than the rotation axis of the second gear member and the rotation axis of the third gear member, and the third locking projection contact portion is provided. It is provided outside the third locking portion insertion hole in the radial direction of the rotation axis of the steering shaft so as to overlap the third locking projection.

別の好ましい態様では、前記ステアリング装置用舵角検出装置の態様のいずれかにおいて、前記第1係止突起は、前記操舵軸の回転軸線の径方向に沿った方向に突出する形状を有する。 In another preferred embodiment, in any of the aspects of the steering angle detection device for a steering device, the first locking projection has a shape protruding in a direction along the radial direction of the rotation axis of the steering shaft.

別の好ましい態様では、前記ステアリング装置用舵角検出装置の態様のいずれかにおいて、前記ケーシング部材は、ストッパ部を有し、前記ストッパ部は、前記操舵軸の回転軸線の方向に沿って延びる棒形状を有し、前記操舵軸の回転軸線の径方向において前記第1カバー部材係止部の内側に設けられ、前記操舵軸の回転軸線の方向の前記第1側の端部が、前記カバー部材と対向するように設けられている。 In another preferred embodiment, in any of the aspects of the steering angle detector, the casing member has a stopper, which is a rod extending along the direction of the rotation axis of the steering shaft. The cover member has a shape and is provided inside the first cover member locking portion in the radial direction of the rotation axis of the steering shaft, and the first end portion in the direction of the rotation axis of the steering shaft is the cover member. It is provided so as to face the.

別の好ましい態様では、前記ステアリング装置用舵角検出装置の態様のいずれかにおいて、前記第1カバー部材係止部は、前記ケーシング部材と一体に形成されている。 In another preferred embodiment, in any of the aspects of the steering angle detection device for a steering device, the first cover member locking portion is formed integrally with the casing member.

別の好ましい態様では、前記ステアリング装置用舵角検出装置の態様のいずれかにおいて、前記第1カバー部材係止部本体部は、前記操舵軸の回転軸線の径方向において、前記第1係止部挿入孔の中心よりも外側寄りに設けられている。 In another preferred embodiment, in any of the aspects of the steering angle detection device for a steering device, the first cover member locking portion main body is the first locking portion in the radial direction of the rotation axis of the steering shaft. It is provided closer to the outside than the center of the insertion hole.

別の好ましい態様では、前記ステアリング装置用舵角検出装置の態様のいずれかにおいて、前記カバー部材は、前記操舵軸の回転軸線の径方向において、前記第1カバー部材係止部本体部より内側に設けられ、前記操舵軸の回転軸線の径方向の外側に向かって突出する突出部を有する。 In another preferred embodiment, in any of the aspects of the steering angle detection device for the steering device, the cover member is inside the main body of the first cover member locking portion in the radial direction of the rotation axis of the steering shaft. It is provided and has a protruding portion that protrudes outward in the radial direction of the rotation axis of the steering shaft.

別の好ましい態様では、前記ステアリング装置用舵角検出装置の態様のいずれかにおいて、前記突出部は、前記第1カバー部材係止部と当接するように設けられている。 In another preferred embodiment, in any one of the aspects of the steering angle detecting device for a steering device, the protruding portion is provided so as to come into contact with the first cover member locking portion.

1・・・ステアリング装置、8・・・操舵軸、18・・・舵角センサ、20・・・ケーシング部材、21・・・第1歯車部材、22・・・第2歯車部材、23・・・第3歯車部材、24・・・カバー部材、24a・・・第1係止突起当接部、26・・・ケーシング部材操舵軸挿入孔、28・・・第1カバー部材係止部、28a・・・第1カバー部材係止部本体部、29・・・第2カバー部材係止部、30・・・第3カバー部材係止部、37・・・カバー部材操舵軸挿入孔、45・・・第1係止部挿入孔、46・・・第2係止部挿入孔、47・・・第3係止部挿入孔、28b・・・第1係止突起 1 ... Steering device, 8 ... Steering shaft, 18 ... Steering angle sensor, 20 ... Casing member, 21 ... 1st gear member, 22 ... 2nd gear member, 23 ... 3rd gear member, 24 ... cover member, 24a ... first locking projection contact portion, 26 ... casing member steering shaft insertion hole, 28 ... first cover member locking portion, 28a ... 1st cover member locking portion main body, 29 ... 2nd cover member locking portion, 30 ... 3rd cover member locking portion, 37 ... cover member steering shaft insertion hole, 45. .. 1st locking part insertion hole, 46 ... 2nd locking part insertion hole, 47 ... 3rd locking part insertion hole, 28b ... 1st locking protrusion

Claims (10)

ステアリングホイールの回転に伴い回転する操舵軸を備えるステアリング装置用舵角検出装置において、
ケーシング部材であって、ケーシング部材操舵軸挿入孔と、歯車収容部と、第1カバー部材係止部を備え、
前記ケーシング部材操舵軸挿入孔は、前記操舵軸を挿入可能であって、
前記第1カバー部材係止部は、第1カバー部材係止部本体部と、第1係止突起を有し、
前記第1カバー部材係止部本体部は、前記操舵軸の回転軸線の方向に沿って延びる棒形状を有し、前記操舵軸の回転軸線の径方向に弾性変形可能であって、
前記第1係止突起は、前記第1カバー部材係止部本体部に設けられ、前記操舵軸の回転軸線の径方向の外側に向かって突出する形状を有している、
前記ケーシング部材と、
第1歯車部材であって、第1歯車部材本体部と、複数の第1歯部を備え、前記歯車収容部内に設けられ、前記操舵軸と一体に回転可能であって、
前記第1歯車部材本体部は、筒形状を有し、内部に前記操舵軸を挿入可能であって、
前記複数の第1歯部は、前記操舵軸の回転軸線の径方向において前記第1歯車部材本体部の外側に設けられた外歯である、
前記第1歯車部材と、
第2歯車部材であって、複数の第2歯部を備え、前記歯車収容部内に回転可能に設けられ、
前記複数の第2歯部は、前記複数の第1歯部と噛合う外歯である、
前記第2歯車部材と、
第3歯車部材であって、複数の第3歯部を備え、前記歯車収容部内に回転可能に設けられ、
前記複数の第3歯部は、前記複数の第2歯部と互いに割り切れない数の歯を有し、前記第1歯車部材の回転に伴い回転する
前記第3歯車部材と、
第2歯車部材用磁性部材であって、前記第2歯車部材に設けられ、前記第2歯車部材の回転軸線の周りにN極とS極が並んでいる前記第2歯車部材用磁性部材と、
第3歯車部材用磁性部材であって、前記第3歯車部材に設けられ、前記第3歯車部材の回転軸線の周りにN極とS極が並んでいる前記第3歯車部材用磁性部材と、
第2歯車部材用回転検出センサであって、前記第2歯車部材用磁性部材の磁界の変化に基づき前記第2歯車部材の回転角を検出する前記第2歯車部材用回転検出センサと、
第3歯車部材用回転検出センサであって、前記第3歯車部材用磁性部材の磁界の変化に基づき前記第3歯車部材の回転角を検出する前記第3歯車部材用回転検出センサと、
カバー部材であって、カバー部材操舵軸挿入孔と、第1係止部挿入孔と、第1係止突起当接部を備え、前記歯車収容部より前記操舵軸の回転軸線の方向の一方である第1側に設けられ、
前記カバー部材操舵軸挿入孔は、前記操舵軸を挿入可能であって、
前記第1係止部挿入孔は、前記第1係止突起が前記第1係止部挿入孔を前記操舵軸の回転軸線の方向において、前記第1側の反対側である第2側から前記第1側に向かって挿入可能であって、
前記第1係止突起当接部は、前記操舵軸の回転軸線の径方向において前記第1係止部挿入孔の外側であって、前記第1係止突起とオーバーラップするように設けられている、前記第1係止突起当接部と、
を有するカバー部材と、
を有し、前記カバー部材は、前記操舵軸の回転軸線の径方向において、前記第1カバー部材係止部本体部より内側に設けられ、前記操舵軸の回転軸線の径方向の外側に向かって突出する突出部を有することを特徴とするステアリング装置用舵角検出装置。
In a steering angle detection device for a steering device having a steering shaft that rotates with the rotation of the steering wheel.
A casing member including a casing member steering shaft insertion hole, a gear accommodating portion, and a first cover member locking portion.
The casing member steering shaft insertion hole is capable of inserting the steering shaft.
The first cover member locking portion has a first cover member locking portion main body portion and a first locking projection.
The first cover member locking portion main body has a rod shape extending along the direction of the rotation axis of the steering shaft, and is elastically deformable in the radial direction of the rotation axis of the steering shaft.
The first locking projection is provided on the main body of the first cover member locking portion, and has a shape that projects outward in the radial direction of the rotation axis of the steering shaft.
With the casing member
It is a first gear member, includes a first gear member main body portion and a plurality of first tooth portions, is provided in the gear accommodating portion, and can rotate integrally with the steering shaft.
The first gear member main body has a tubular shape, and the steering shaft can be inserted inside.
The plurality of first tooth portions are external teeth provided outside the first gear member main body portion in the radial direction of the rotation axis of the steering shaft.
With the first gear member
It is a second gear member, includes a plurality of second tooth portions, and is rotatably provided in the gear accommodating portion.
The plurality of second teeth are external teeth that mesh with the plurality of first teeth.
With the second gear member
It is a third gear member, includes a plurality of third tooth portions, and is rotatably provided in the gear accommodating portion.
The plurality of third tooth portions have a number of teeth that are not divisible by each other with the plurality of second tooth portions, and the third gear member that rotates with the rotation of the first gear member and the third gear member.
The magnetic member for the second gear member, which is provided on the second gear member and has N poles and S poles arranged around the rotation axis of the second gear member, and the magnetic member for the second gear member.
A magnetic member for a third gear member, which is provided on the third gear member and has north and south poles arranged around the rotation axis of the third gear member, and a magnetic member for the third gear member.
A rotation detection sensor for the second gear member, which is a rotation detection sensor for the second gear member that detects the rotation angle of the second gear member based on a change in the magnetic field of the magnetic member for the second gear member.
The rotation detection sensor for the third gear member, which detects the rotation angle of the third gear member based on the change in the magnetic field of the magnetic member for the third gear member, and the rotation detection sensor for the third gear member.
The cover member includes a cover member steering shaft insertion hole, a first locking portion insertion hole, and a first locking projection contact portion, and is provided from the gear accommodating portion in the direction of the rotation axis of the steering shaft. Provided on a certain first side
The steering shaft can be inserted into the cover member steering shaft insertion hole.
The first locking portion insertion hole is such that the first locking projection inserts the first locking portion insertion hole from the second side opposite to the first side in the direction of the rotation axis of the steering shaft. It can be inserted toward the first side,
The first locking projection contact portion is provided outside the first locking portion insertion hole in the radial direction of the rotation axis of the steering shaft so as to overlap the first locking projection. With the first locking projection contact portion
Cover member with
Have a said cover member, said in a radial direction of the axis of rotation of the steering shaft, the first provided from the cover member engaging portion main body portion inwardly, toward the outside in the radial direction of the rotation axis of the steering shaft A steering angle detecting device for a steering device, which has a protruding portion.
請求項1に記載のステアリング装置用舵角検出装置において、
前記ケーシング部材は、付勢部を備え、
前記カバー部材は、付勢部挿入孔と、付勢部当接部を備え、
前記付勢部は、前記付勢部挿入孔に挿入され、弾性変形した状態で、前記付勢部当接部に当接していることを特徴とするステアリング装置用舵角検出装置。
In the steering angle detection device for a steering device according to claim 1,
The casing member includes an urging portion and has an urging portion.
The cover member includes an urging portion insertion hole and an urging portion abutting portion.
A steering angle detecting device for a steering device, wherein the urging portion is inserted into the urging portion insertion hole and is in contact with the urging portion abutting portion in a state of being elastically deformed.
請求項1に記載のステアリング装置用舵角検出装置において、
前記ケーシング部材は、ダウエルピンを備え、
前記カバー部材は、前記ダウエルピンが挿入されるダウエルピン用挿入孔を備えることを特徴とするステアリング装置用舵角検出装置。
In the steering angle detection device for a steering device according to claim 1,
The casing member includes a dowel pin and
The cover member is a steering angle detecting device for a steering device, which comprises an insertion hole for a dowel pin into which the dowel pin is inserted.
請求項1に記載のステアリング装置用舵角検出装置において、
前記第1係止部挿入孔は、前記操舵軸の回転軸線の径方向において、前記操舵軸の回転軸線からの距離が、前記第2歯車部材の回転軸線および前記第3歯車部材の回転軸線よりも近い場所に設けられていることを特徴とするステアリング装置用舵角検出装置。
In the steering angle detection device for a steering device according to claim 1,
In the first locking portion insertion hole, the distance from the rotation axis of the steering shaft in the radial direction of the rotation axis of the steering shaft is greater than the rotation axis of the second gear member and the rotation axis of the third gear member. A steering angle detection device for a steering device, which is characterized by being installed in a close location.
請求項4に記載のステアリング装置用舵角検出装置において、
前記ケーシング部材は、第2カバー部材係止部と、第3カバー部材係止部を備え、
前記第2カバー部材係止部は、第2カバー部材係止部本体部と、第2係止突起を有し、
前記第2カバー部材係止部本体部は、前記操舵軸の回転軸線の方向に沿って延びる棒形状を有し、前記操舵軸の回転軸線の径方向に弾性変形可能であって、
前記第2係止突起は、前記第2カバー部材係止部本体部に設けられ、前記操舵軸の回転軸線の径方向の外側に向かって突出する形状を有しており、
前記第3カバー部材係止部は、第3カバー部材係止部本体部と、第3係止突起を有し、
前記第3カバー部材係止部本体部は、前記操舵軸の回転軸線の方向に沿って延びる棒形状を有し、前記操舵軸の回転軸線の径方向に弾性変形可能であって、
前記第3係止突起は、前記第3カバー部材係止部本体部に設けられ、前記操舵軸の回転軸線の径方向の外側に向かって突出する形状を有しており、
前記カバー部材は、第2係止部挿入孔と、第2係止突起当接部と、第3係止部挿入孔と、第3係止突起当接部を備え、
前記第2係止部挿入孔は、前記第2係止突起が前記第2係止部挿入孔を前記操舵軸の回転軸線の方向において前記第2側から前記第1側に向かって挿入可能であって、前記操舵軸の回転軸線の径方向において、前記操舵軸の回転軸線からの距離が、前記第2歯車部材の回転軸線および前記第3歯車部材の回転軸線よりも近い場所に設けられており、
前記第2係止突起当接部は、前記操舵軸の回転軸線の径方向において前記第2係止部挿入孔の外側であって、前記第2係止突起とオーバーラップするように設けられており、
前記第3係止部挿入孔は、前記第3係止突起が前記第3係止部挿入孔を前記操舵軸の回転軸線の方向において前記第2側から前記第1側に向かって挿入可能であって、前記操舵軸の回転軸線の径方向において、前記操舵軸の回転軸線からの距離が、前記第2歯車部材の回転軸線および前記第3歯車部材の回転軸線よりも近い場所に設けられており、
前記第3係止突起当接部は、前記操舵軸の回転軸線の径方向において前記第3係止部挿入孔の外側であって、前記第3係止突起とオーバーラップするように設けられていることを特徴とするステアリング装置用舵角検出装置。
In the steering angle detection device for a steering device according to claim 4.
The casing member includes a second cover member locking portion and a third cover member locking portion.
The second cover member locking portion has a second cover member locking portion main body portion and a second locking projection.
The second cover member locking portion main body has a rod shape extending along the direction of the rotation axis of the steering shaft, and is elastically deformable in the radial direction of the rotation axis of the steering shaft.
The second locking projection is provided on the main body of the second cover member locking portion, and has a shape that projects outward in the radial direction of the rotation axis of the steering shaft.
The third cover member locking portion has a third cover member locking portion main body portion and a third locking projection.
The third cover member locking portion main body has a rod shape extending along the direction of the rotation axis of the steering shaft, and is elastically deformable in the radial direction of the rotation axis of the steering shaft.
The third locking projection is provided on the main body of the third cover member locking portion, and has a shape that projects outward in the radial direction of the rotation axis of the steering shaft.
The cover member includes a second locking portion insertion hole, a second locking protrusion contact portion, a third locking portion insertion hole, and a third locking protrusion contact portion.
In the second locking portion insertion hole, the second locking projection can insert the second locking portion insertion hole from the second side toward the first side in the direction of the rotation axis of the steering shaft. Therefore, in the radial direction of the rotation axis of the steering shaft, the distance from the rotation axis of the steering shaft is provided at a position closer to the rotation axis of the second gear member and the rotation axis of the third gear member. Ori
The second locking projection contact portion is provided outside the second locking projection insertion hole in the radial direction of the rotation axis of the steering shaft so as to overlap the second locking projection. Ori,
In the third locking portion insertion hole, the third locking projection can insert the third locking portion insertion hole from the second side toward the first side in the direction of the rotation axis of the steering shaft. Therefore, in the radial direction of the rotation axis of the steering shaft, the distance from the rotation axis of the steering shaft is provided at a position closer to the rotation axis of the second gear member and the rotation axis of the third gear member. Ori
The third locking projection contact portion is provided outside the third locking projection insertion hole in the radial direction of the rotation axis of the steering shaft so as to overlap the third locking projection. A steering angle detection device for a steering device, which is characterized by being present.
請求項1に記載のステアリング装置用舵角検出装置において、
前記第1係止突起は、前記操舵軸の回転軸線の径方向に沿った方向に突出する形状を有することを特徴とするステアリング装置用舵角検出装置。
In the steering angle detection device for a steering device according to claim 1,
The steering angle detecting device for a steering device, wherein the first locking projection has a shape protruding in a direction along the radial direction of the rotation axis of the steering shaft.
請求項1に記載のステアリング装置用舵角検出装置において、
前記ケーシング部材は、ストッパ部を有し、
前記ストッパ部は、前記操舵軸の回転軸線の方向に沿って延びる棒形状を有し、前記操舵軸の回転軸線の径方向において前記第1カバー部材係止部の内側に設けられ、前記操舵軸の回転軸線の方向の前記第1側の端部が、前記カバー部材と対向するように設けられていることを特徴とするステアリング装置用舵角検出装置。
In the steering angle detection device for a steering device according to claim 1,
The casing member has a stopper portion and has a stopper portion.
The stopper portion has a rod shape extending along the direction of the rotation axis of the steering shaft, and is provided inside the first cover member locking portion in the radial direction of the rotation axis of the steering shaft. A steering angle detecting device for a steering device, wherein the end portion on the first side in the direction of the rotation axis of the steering device is provided so as to face the cover member.
請求項1に記載のステアリング装置用舵角検出装置において、
前記第1カバー部材係止部は、前記ケーシング部材と一体に形成されていることを特徴とするステアリング装置用舵角検出装置。
In the steering angle detection device for a steering device according to claim 1,
The steering angle detecting device for a steering device, wherein the first cover member locking portion is integrally formed with the casing member.
請求項1に記載のステアリング装置用舵角検出装置において、
前記第1カバー部材係止部本体部は、前記操舵軸の回転軸線の径方向において、前記第1係止部挿入孔の中心よりも外側寄りに設けられていることを特徴とするステアリング装置用舵角検出装置。
In the steering angle detection device for a steering device according to claim 1,
The first cover member locking portion main body is provided on the outer side of the center of the first locking portion insertion hole in the radial direction of the rotation axis of the steering shaft for a steering device. Steering angle detector.
請求項に記載のステアリング装置用舵角検出装置において、
前記突出部は、前記第1カバー部材係止部と当接するように設けられていることを特徴とするステアリング装置用舵角検出装置。
In the steering angle detection device for a steering device according to claim 1,
A steering angle detecting device for a steering device, wherein the protruding portion is provided so as to come into contact with the first cover member locking portion.
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