JP2009036323A - Driving power transmitting apparatus - Google Patents

Driving power transmitting apparatus Download PDF

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JP2009036323A
JP2009036323A JP2007201883A JP2007201883A JP2009036323A JP 2009036323 A JP2009036323 A JP 2009036323A JP 2007201883 A JP2007201883 A JP 2007201883A JP 2007201883 A JP2007201883 A JP 2007201883A JP 2009036323 A JP2009036323 A JP 2009036323A
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connecting member
rotating body
fitting portion
front housing
driving force
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Kunihiko Suzuki
邦彦 鈴木
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JTEKT Corp
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JTEKT Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving power transmitting apparatus which can reduce its weight and axial length without lowering its torque transmitting efficiency. <P>SOLUTION: A connecting member 2 comprises a shaft portion 2a into which a driving power is input, a connecting member side fitting portion 2c to be fitted into the fitting portion 3a of a front housing 3, and engaging projections 2i for engaging with the engaged projections 3c of the front housing 3 on the outer circumferential side of the connecting member side fitting portion 2c. Further, the front housing 3 and the connecting member 2 are connected irrotationally by restricting the axial movement by the nut 2f provided on the outer circumference of the connecting member side fitting portion 2c so as to axially engage with the fitting portion 3a. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、駆動力伝達装置に関する。   The present invention relates to a driving force transmission device.

従来、車両に備えられた駆動力伝達装置は、２つの軸の間でトルク伝達する。この駆動力伝達装置の第１回転体は有底筒状に形成されるとともに駆動源側の軸に連結され、駆動力の入力により回転する。第１回転体の筒内には軸状に形成された第２回転体が回転自在、且つ第１回転体と同軸配置されており、第１回転体と第２回転体との間には両者をトルク伝達可能に連結する連結機構としてのクラッチが配置されている。駆動力伝達装置には、駆動源側の軸と連結する構成として、第１回転体の底部の外面に入力軸部を立設したもの（特許文献１参照）、駆動源側の軸に形成されたフランジ部に第１回転体の底部をボルトで締結したものがある（特許文献２参照）。
特開２００４−３３２７５８号公報 特許第３２５６７３７号公報 Conventionally, a driving force transmission device provided in a vehicle transmits torque between two shafts. The first rotating body of the driving force transmission device is formed in a bottomed cylindrical shape and is connected to the shaft on the driving source side, and rotates by the input of the driving force. A second rotating body formed in an axial shape is rotatable in the cylinder of the first rotating body and is coaxially arranged with the first rotating body. Between the first rotating body and the second rotating body, both A clutch is arranged as a coupling mechanism that couples the motors so as to transmit torque. The driving force transmission device has a structure in which an input shaft portion is erected on the outer surface of the bottom of the first rotating body (see Patent Document 1), and is formed on the shaft on the driving source side, as a configuration that is coupled to the shaft on the driving source side. There is one in which the bottom portion of the first rotating body is fastened to the flange portion with a bolt (see Patent Document 2).
JP 2004-332758 A Japanese Patent No. 3256737

ところで、連結機構の係合力を電磁コイルへの印可電流によって制御する駆動力伝達装置においては、アルミニウム合金等の非磁性材料で形成された第１回転体を用いる場合がある。しかし、特許文献１のように第１回転体の底部の外面に入力軸部を立設したものでは、比較的径の小さい入力軸部を介して十分な駆動力を伝達することには強度上の無理があり、このような構成を取り得ない場合がある。また、特許文献２のようにフランジ部に第１回転体の底部をボルトで締結したものは、ボルトはフランジ側から第１回転体の底部に螺着されるため、同底部側にはボルト穴を形成するためのスペース（若しくは底部の厚み）が必要となる。また、フランジには複数の挿通孔が形成されることになるため、それに伴う強度の低下を回避すべく同フランジの厚みを厚くする必要がある。このため、その軽量化及び小型化、特に軸長の短縮化の観点から不利な構成となっており、この点において改善の余地を残すものとなっていた。   By the way, in the driving force transmission device that controls the engaging force of the coupling mechanism by the applied current to the electromagnetic coil, a first rotating body formed of a nonmagnetic material such as an aluminum alloy may be used. However, in the case where the input shaft portion is erected on the outer surface of the bottom portion of the first rotating body as in Patent Document 1, it is difficult to transmit a sufficient driving force via the input shaft portion having a relatively small diameter. There are cases where such a configuration cannot be obtained. In addition, as in Patent Document 2, in the case where the bottom portion of the first rotating body is fastened to the flange portion with the bolt, the bolt is screwed to the bottom portion of the first rotating body from the flange side. A space (or thickness of the bottom portion) for forming the film is required. In addition, since a plurality of insertion holes are formed in the flange, it is necessary to increase the thickness of the flange in order to avoid a decrease in strength associated therewith. For this reason, the configuration is disadvantageous from the viewpoint of weight reduction and size reduction, particularly shortening of the shaft length, and there remains room for improvement in this respect.

本発明は、上記問題を解決するためになされたものであって、その目的は、トルク伝達効率の低下を招くことなく軽量化、及び短軸化を図ることができる駆動力伝達装置を提供することにある。   The present invention has been made to solve the above problems, and an object of the present invention is to provide a driving force transmission device that can be reduced in weight and shortened without causing a decrease in torque transmission efficiency. There is.

上記問題点を解決するために、請求項１に記載の発明は、筒状に形成された第１回転体と、該第１回転体の筒内に回転自在に同軸配置された第２回転体と、前記第１回転体と前記第２回転体との間に配置されて前記第１回転体及び前記第２回転体をトルク伝達可能に連結する連結機構と、前記第１回転体に相対回転不能に連結される連結部材とを備えた駆動力伝達装置であって、前記第１回転体は、その軸方向の一端側に、前記連結部材と係合する係合部と、該係合部の内周側に形成された嵌合部とを備え、前記連結部材は、駆動力が入力される軸部と、前記嵌合部に嵌入される連結部材側嵌合部と、該連結部材側嵌合部の外周側にて前記第１回転体の係合部と周方向で係合する連結部材側係合部とを備え、前記第１回転体及び前記連結部材は、前記連結部材側嵌合部の外周に設けられて前記嵌合部と軸方向に係合する抜止部により軸方向への移動が規制されて相対回転不能に連結されること、を要旨とする。   In order to solve the above-mentioned problems, the invention according to claim 1 includes a first rotating body formed in a cylindrical shape and a second rotating body that is coaxially arranged rotatably in a cylinder of the first rotating body. A coupling mechanism that is disposed between the first rotating body and the second rotating body and connects the first rotating body and the second rotating body so as to be able to transmit torque, and a relative rotation to the first rotating body. A driving force transmission device including a connecting member that is connected in an incapable manner, wherein the first rotating body has an engaging portion that engages with the connecting member on one end side in the axial direction, and the engaging portion A coupling portion formed on the inner peripheral side of the coupling member, the coupling member including a shaft portion to which a driving force is input, a coupling member side fitting portion to be fitted into the fitting portion, and the coupling member side A coupling member-side engaging portion that engages with an engaging portion of the first rotating body in a circumferential direction on an outer peripheral side of the fitting portion; and the first rotating body and the connecting member The movement is restricted in the axial direction by a retaining portion that is provided on the outer periphery of the coupling member side fitting portion and engages with the fitting portion in the axial direction, and is connected in a relatively non-rotatable manner. .

上記構成によれば、連結部材及び第１回転体は、連結部材の連結部材側嵌合部の外周に設けられて第１回転体の嵌合部と軸方向に係合する抜止部により軸方向への移動が規制されることにより連結されるため、第１回転体の底部にはボルト穴を形成するためのスペース（若しくは底部の厚み）が不要となり、これにより軸方向長さの短縮化を図ることができる。加えて、フランジ部にボルト用の挿通孔を形成する必要がなく、同挿通孔の形成によるフランジ部の強度低下を抑えるためにフランジ部を軸方向に厚く形成する必要がない。その結果、フランジ部の厚みを薄くしてさらなる軸方向長さの短縮化及び軽量化を図ることができる。そして、連結部材の連結部材側係合部と第１回転体の係合部とを周方向で係合させることで、連結部材と第１回転体との間の相対回転を規制し、これにより高いトルク伝達効率を確保することができる。その結果、トルク伝達効率の低下を招くことなく軽量化、及び短軸化を図ることができる。   According to the above configuration, the connecting member and the first rotating body are provided in the outer periphery of the connecting member side fitting portion of the connecting member, and are axially provided by the retaining portion that engages with the fitting portion of the first rotating body in the axial direction. Therefore, a space for forming a bolt hole (or a thickness of the bottom portion) is not required at the bottom of the first rotating body, thereby shortening the axial length. Can be planned. In addition, it is not necessary to form a bolt insertion hole in the flange portion, and it is not necessary to form the flange portion thick in the axial direction in order to suppress a decrease in strength of the flange portion due to the formation of the insertion hole. As a result, it is possible to reduce the thickness of the flange portion and further reduce the axial length and weight. And the relative rotation between a connection member and a 1st rotary body is controlled by engaging the connection member side engagement part of a connection member, and the engagement part of a 1st rotary body in the circumferential direction, thereby High torque transmission efficiency can be ensured. As a result, the weight can be reduced and the shaft can be shortened without reducing the torque transmission efficiency.

請求項２に記載の発明は、前記連結部材が前記第１回転体に連結された状態で、前記連結部材と前記第１回転体との間に軸方向の隙間を設けたこと、を要旨とする。
上記構成によれば、連結部材と第１回転体とを連結した状態で連結部材と第１回転体との間に設けた軸方向の隙間により、連結部材を構成する材料と第１回転体を構成する材料との熱膨張率の違いに起因する熱応力を緩和することができる。その結果、連結部材と第１回転体との熱膨張率の違いに起因する熱応力による熱疲労破壊を好適に防止することができる。 The gist of the invention described in claim 2 is that an axial gap is provided between the connecting member and the first rotating body in a state where the connecting member is connected to the first rotating body. To do.
According to the said structure, the material which comprises a connection member, and a 1st rotary body with the axial clearance gap provided between the connection member and the 1st rotary body in the state which connected the connection member and the 1st rotary body. Thermal stress due to the difference in coefficient of thermal expansion with the constituent material can be relaxed. As a result, thermal fatigue failure due to thermal stress due to the difference in thermal expansion coefficient between the connecting member and the first rotating body can be suitably prevented.

請求項３に記載の発明は、前記第２回転体は、前記連結部材側嵌合部との間に設けられた軸受によって回転自在に支持されること、を要旨とする。
本発明によれば、第１回転体の筒内に配置された第２回転体が、連結部材によって支持される。このため、連結部材の回転中心と第２回転体の回転中心とを一致させ易くなり、連結部材の回転中心と第２回転体の回転中心とがずれることに起因する振動を好適に防止することができる。 The gist of the invention described in claim 3 is that the second rotating body is rotatably supported by a bearing provided between the connecting member side fitting portion.
According to this invention, the 2nd rotary body arrange | positioned in the cylinder of a 1st rotary body is supported by the connection member. For this reason, it becomes easy to make the rotation center of a connection member and the rotation center of a 2nd rotary body correspond, and it prevents suitably the vibration resulting from the rotation center of a connection member and the rotation center of a 2nd rotation body shifting. Can do.

請求項４に記載の発明は、前記連結部材側嵌合部は、前記嵌合部に内嵌されるとともに、前記抜止部として、外周面にナットが螺着されること、を要旨とする。
上記構成によれば、連結部材の連結部材側嵌合部の外周面にナットを螺着することで、容易な構成で連結部材と第１回転体とを連結することができる。 The gist of the invention described in claim 4 is that the coupling member side fitting portion is fitted into the fitting portion, and a nut is screwed onto the outer peripheral surface as the retaining portion.
According to the said structure, a connection member and a 1st rotary body can be connected with an easy structure by screwing a nut to the outer peripheral surface of the connection member side fitting part of a connection member.

本発明によれば、トルク伝達効率の低下を招くことなく軽量化、及び短軸化を図ることができる駆動力伝達装置を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the driving force transmission device which can aim at weight reduction and shortening without causing the fall of torque transmission efficiency can be provided.

以下、本発明を具体化した一実施形態を図面に従って説明する。
図１（ａ）に示すように、本実施形態の駆動力伝達装置１の連結部材２は、プロペラシャフト（図示略）に連結され、駆動源であるエンジン（図示略）の発生する駆動力が入力される。連結部材２は鉄系金属からなり、プロペラシャフトに連結される軸部２ａを備えている。軸部２ａの反入力側（図１（ａ）中、右側）端部には、径方向外側に向かってフランジ部２ｂが延出形成されている。本実施形態において、フランジ部２ｂは、所定径の略円盤状に形成されている。このフランジ部２ｂの反入力側（図１（ａ）中、右側）には第１回転体としてのフロントハウジング３が設けられている。フロントハウジング３は非磁性材料（例えばアルミニウム合金など）からなり、フランジ部２ｂの外径と略等しい外径を有する円筒状に形成されている。フロントハウジング３の入力側（図において左側）の端部には径方向内側に沿って円環板状の嵌合部３ａが形成されており、その軸方向外面Ｓがフランジ部２ｂと相対向している。フロントハウジング３は、連結部材２の軸部２ａと同軸配置されるとともに、連結部材２のフランジ部２ｂがフロントハウジング３の嵌合部３ａの軸方向外面Ｓに対向配置された状態で、フロントハウジング３と連結される。 DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIG. 1A, the connecting member 2 of the driving force transmission device 1 of the present embodiment is connected to a propeller shaft (not shown), and a driving force generated by an engine (not shown) as a driving source is generated. Entered. The connecting member 2 is made of iron-based metal and includes a shaft portion 2a that is connected to the propeller shaft. A flange portion 2b is formed to extend outward in the radial direction at the end of the shaft portion 2a opposite to the input side (right side in FIG. 1A). In this embodiment, the flange part 2b is formed in the substantially disc shape of a predetermined diameter. A front housing 3 as a first rotating body is provided on the non-input side (right side in FIG. 1A) of the flange portion 2b. The front housing 3 is made of a nonmagnetic material (for example, aluminum alloy) and is formed in a cylindrical shape having an outer diameter substantially equal to the outer diameter of the flange portion 2b. An annular plate-like fitting portion 3a is formed along the radial inner side at the input side (left side in the figure) end portion of the front housing 3, and the axial outer surface S thereof faces the flange portion 2b. ing. The front housing 3 is arranged coaxially with the shaft portion 2 a of the connecting member 2, and the front housing 3 is in a state where the flange portion 2 b of the connecting member 2 is arranged to face the axial outer surface S of the fitting portion 3 a of the front housing 3. 3 is connected.

詳述すると、連結部材２は、軸方向においてフランジ部２ｂから反入力側（図１（ａ）中、右側）へ延設されフロントハウジング３と勘合する環状の連結部材側嵌合部２ｃを備えている。連結部材２の連結部材側嵌合部２ｃは、同連結部材２のフランジ部２ｂにおいて軸部２ａとは反対側の中央部に、フロントハウジング３の嵌合部３ａの内径と略等しい外径を有する略円筒状に形成されている。連結部材側嵌合部２ｃの外周面２ｇの先端部分には、ネジ部２ｅが形成されている。そして、本実施形態では、フロントハウジング３の嵌合部３ａに連結部材２の連結部材側嵌合部２ｃが内嵌され連結部材側嵌合部２ｃのネジ部２ｅがフロントハウジング３の筒内に配置された状態で、フロントハウジング３の筒内側から連結部材側嵌合部２ｃのネジ部２ｅに、抜止部としてのナット２ｆが螺着されている。   More specifically, the connecting member 2 includes an annular connecting member side fitting portion 2c that extends from the flange portion 2b in the axial direction to the non-input side (right side in FIG. 1A) and engages with the front housing 3. ing. The connecting member-side fitting portion 2c of the connecting member 2 has an outer diameter substantially equal to the inner diameter of the fitting portion 3a of the front housing 3 at the center portion of the flange portion 2b of the connecting member 2 opposite to the shaft portion 2a. It has a substantially cylindrical shape. A threaded portion 2e is formed at the distal end portion of the outer peripheral surface 2g of the connecting member side fitting portion 2c. In this embodiment, the coupling member side fitting portion 2 c of the coupling member 2 is fitted into the fitting portion 3 a of the front housing 3, and the screw portion 2 e of the coupling member side fitting portion 2 c is placed in the cylinder of the front housing 3. In the arranged state, a nut 2f as a retaining portion is screwed from the inner side of the front housing 3 to the screw portion 2e of the coupling member side fitting portion 2c.

また、図１（ｂ）に示すように、連結部材２がフロントハウジング３に連結された状態で、連結部材側嵌合部２ｃに設けられたナット２ｆとフロントハウジング３の嵌合部３ａとの間に軸方向の隙間Ｃが設けられている。また、連結部材２の連結部材側嵌合部２ｃの外周面２ｇとフロントハウジング３の嵌合部３ａの内周面３ｂとの間にはシール部材４が介在されており、これによりフロントハウジング３と連結部材側嵌合部２ｃとの間のシール性を確保し、フロントハウジング３内の潤滑油の漏出を防止するようになっている。   Further, as shown in FIG. 1B, in a state where the connecting member 2 is connected to the front housing 3, the nut 2f provided on the connecting member side fitting portion 2c and the fitting portion 3a of the front housing 3 are connected. An axial gap C is provided between them. Further, a seal member 4 is interposed between the outer peripheral surface 2g of the connecting member side fitting portion 2c of the connecting member 2 and the inner peripheral surface 3b of the fitting portion 3a of the front housing 3, whereby the front housing 3 And the connecting member side fitting portion 2c are secured, and leakage of the lubricating oil in the front housing 3 is prevented.

また、連結部材２の連結部材側嵌合部２ｃの内周には、ボール軸受５が固定されている。また、連結部材２のフランジ部２ｂにおいて連結部材側嵌合部２ｃよりも径方向内側の部分には、フロントハウジング３内に充填される潤滑油を貯留するスペースとしての油溜まり２ｈが凹設されている。   A ball bearing 5 is fixed to the inner periphery of the connecting member-side fitting portion 2 c of the connecting member 2. Further, an oil reservoir 2h as a space for storing lubricating oil filled in the front housing 3 is recessed in the flange portion 2b of the connecting member 2 at a portion radially inward of the connecting member side fitting portion 2c. ing.

図２に示すように、フランジ部２ｂの前記軸部２ａとは反対側の面２ｄにおいて連結部材側嵌合部２ｃよりも径方向外側には、係合部としての複数の係合凸部２ｉが放射状に形成されており、フロントハウジング３の嵌合部３ａの軸方向外面Ｓには、連結部材側係合部としての複数の被係合凸部３ｃが放射状に形成されている（図１（ａ）参照）。連結部材２とフロントハウジング３とが連結された状態で、各係合凸部２ｉは、周方向で隣り合う被係合凸部３ｃの間に配置される。   As shown in FIG. 2, on the surface 2d of the flange portion 2b opposite to the shaft portion 2a, on the radially outer side of the connecting member side fitting portion 2c, there are a plurality of engaging convex portions 2i as engaging portions. Are formed radially, and on the axially outer surface S of the fitting portion 3a of the front housing 3, a plurality of engaged protrusions 3c as connecting member side engaging portions are formed radially (FIG. 1). (See (a)). In a state where the connecting member 2 and the front housing 3 are connected, each engaging convex portion 2i is disposed between the engaging convex portions 3c adjacent in the circumferential direction.

また、フロントハウジング３の開口端３ｄには、環状のリヤハウジング６が嵌着されており、第２回転体としてのインナシャフト７は、その一端がリヤハウジング６の中央孔６ａに挿通された状態で、同中央孔６ａに設けられたすべり軸受８及びフロントハウジング３の筒内に設けられた前記ボール軸受５によりフロントハウジング３の筒内に回転自在に支承されている。インナシャフト７は中空軸状に形成されており、そのリヤハウジング６側（同図中、右側）の軸端内周には、図示しないリヤディファレンシャルとの連結部（スプライン嵌合部）７ａが形成されている。   In addition, an annular rear housing 6 is fitted to the opening end 3d of the front housing 3, and one end of the inner shaft 7 as the second rotating body is inserted into the central hole 6a of the rear housing 6. Thus, it is rotatably supported in the cylinder of the front housing 3 by the slide bearing 8 provided in the central hole 6a and the ball bearing 5 provided in the cylinder of the front housing 3. The inner shaft 7 is formed in a hollow shaft shape, and a connecting portion (spline fitting portion) 7a (not shown) with a rear differential (not shown) is formed on the inner periphery of the shaft end on the rear housing 6 side (right side in the figure). Has been.

また、フロントハウジング３の筒内には、フロントハウジング３とインナシャフト７とをトルク伝達可能に連結可能なメインクラッチ１４と、このメインクラッチ１４の軸方向、リヤハウジング６側（図１（ａ）中、右側）に並置されたパイロットクラッチ１５と、これらメインクラッチ１４とパイロットクラッチ１５との間に介在されたカム機構１６とが設けられている。メインクラッチ１４は本発明における連結機構に相当する。   Further, in the cylinder of the front housing 3, a main clutch 14 capable of connecting the front housing 3 and the inner shaft 7 so that torque can be transmitted, and the axial direction of the main clutch 14, the rear housing 6 side (FIG. 1 (a)). A pilot clutch 15 juxtaposed in the middle and right side) and a cam mechanism 16 interposed between the main clutch 14 and the pilot clutch 15 are provided. The main clutch 14 corresponds to the coupling mechanism in the present invention.

本実施形態では、メインクラッチ１４には、軸方向に移動可能に設けられた複数のアウタクラッチプレート１７及びインナクラッチプレート１８を交互に配置してなる多板式の摩擦クラッチが採用されている。具体的には、各アウタクラッチプレート１７はフロントハウジング３の内周に、各インナクラッチプレート１８はインナシャフト７の外周にスプライン嵌合されることにより、それぞれ軸方向に移動可能、且つ対応するフロントハウジング３又はインナシャフト７と一体回転可能に設けられている。   In the present embodiment, the main clutch 14 employs a multi-plate friction clutch in which a plurality of outer clutch plates 17 and inner clutch plates 18 provided so as to be movable in the axial direction are alternately arranged. Specifically, each outer clutch plate 17 is splined to the inner periphery of the front housing 3 and each inner clutch plate 18 is splined to the outer periphery of the inner shaft 7, so that each outer clutch plate 17 can move in the axial direction and has a corresponding front. The housing 3 or the inner shaft 7 is provided so as to be rotatable together.

本実施形態のメインクラッチ１４は、これら各アウタクラッチプレート１７及びインナクラッチプレート１８が軸方向に押圧され、互いに摩擦係合することにより、フロントハウジング３とインナシャフト７とを結合、即ちトルク伝達可能に連結するように構成されている。   In the main clutch 14 of the present embodiment, the outer clutch plate 17 and the inner clutch plate 18 are pressed in the axial direction and frictionally engaged with each other, thereby coupling the front housing 3 and the inner shaft 7, that is, transmitting torque. It is comprised so that it may connect.

一方、カム機構１６は、インナシャフト７に支承されることにより回転自在に設けられた第１カム１９と、インナシャフト７の外周にスプライン嵌合されることにより同インナシャフト７と一体回転可能且つ軸方向に移動可能に設けられた第２カム２０と、これら第１カム１９と第２カム２０との間に介在されたボール部材２１とを備えてなる。   On the other hand, the cam mechanism 16 can rotate integrally with the inner shaft 7 by being spline-fitted to the outer periphery of the inner cam 7 and the first cam 19 provided rotatably by being supported by the inner shaft 7. A second cam 20 provided so as to be movable in the axial direction and a ball member 21 interposed between the first cam 19 and the second cam 20 are provided.

本実施形態では、第１カム１９及び第２カム２０は、ともに円盤状に形成され、第１カム１９はリヤハウジング６側に、第２カム２０はメインクラッチ１４側に配置されている。第１カム１９の外周面はパイロットクラッチ１５（インナクラッチプレート２４の内周端）とスプライン嵌合し、第２カム２０はインナシャフト７の外周にスプライン嵌合している。これら第１カム１９及び第２カム２０の対向面には、複数のＵ字溝（符号略）が互いに対向するように形成されており、ボール部材２１は、これら対向する各Ｕ字溝内に配置された状態で第１カム１９及び第２カム２０により挟持されている。そして、本実施形態のカム機構１６は、第１カム１９と第２カム２０とが相対回転することにより、これら第１カム１９と第２カム２０との間が離間、即ちカム部材としての第２カム２０がメインクラッチ１４側に軸方向移動するように構成されている。   In the present embodiment, the first cam 19 and the second cam 20 are both formed in a disc shape, and the first cam 19 is disposed on the rear housing 6 side, and the second cam 20 is disposed on the main clutch 14 side. The outer peripheral surface of the first cam 19 is spline-fitted with the pilot clutch 15 (the inner peripheral end of the inner clutch plate 24), and the second cam 20 is spline-fitted with the outer periphery of the inner shaft 7. A plurality of U-shaped grooves (not shown) are formed on the opposing surfaces of the first cam 19 and the second cam 20 so as to oppose each other, and the ball member 21 is disposed in each of the opposing U-shaped grooves. It is clamped by the first cam 19 and the second cam 20 in the disposed state. In the cam mechanism 16 of the present embodiment, the first cam 19 and the second cam 20 rotate relative to each other, so that the first cam 19 and the second cam 20 are separated from each other, that is, the first cam as a cam member. The two cams 20 are configured to move in the axial direction toward the main clutch 14 side.

また、第２クラッチとしてのパイロットクラッチ１５には、上記メインクラッチ１４と同様に、軸方向に移動可能に設けられた複数のアウタクラッチプレート２３及びインナクラッチプレート２４を交互に配置してなる多板式の摩擦クラッチが採用されている。具体的には、各アウタクラッチプレート２３は、フロントハウジング３の内周に、インナクラッチプレート２４は第１カム１９の外周にスプライン嵌合されることにより、それぞれ軸方向に移動可能、且つ対応するフロントハウジング３又は第１カム１９と一体回転可能に設けられている。そして、本実施形態のパイロットクラッチ１５は、これら各アウタクラッチプレート２３及びインナクラッチプレート２４が軸方向に押圧され、互いに摩擦係合することにより、フロントハウジング３と第１カム１９とをトルク伝達可能に連結するように構成されている。   Further, the pilot clutch 15 as the second clutch is a multi-plate type in which a plurality of outer clutch plates 23 and inner clutch plates 24 which are provided so as to be movable in the axial direction are alternately arranged in the same manner as the main clutch 14. The friction clutch is adopted. Specifically, each outer clutch plate 23 is spline-fitted to the inner periphery of the front housing 3 and the inner clutch plate 24 is spline-fitted to the outer periphery of the first cam 19, so that each of the outer clutch plates 23 can move in the axial direction. The front housing 3 or the first cam 19 is provided so as to be rotatable together. The pilot clutch 15 according to the present embodiment can transmit torque between the front housing 3 and the first cam 19 by pressing the outer clutch plate 23 and the inner clutch plate 24 in the axial direction and frictionally engaging each other. It is comprised so that it may connect.

即ち、第２カム２０との間にボール部材２１を挟持した第１カム１９は、パイロットクラッチ１５の非作動時、同第２カム２０、即ちインナシャフト７とともに一体回転する状態となっており、フロントハウジング３と第１カム１９との間には、同フロントハウジング３とインナシャフト７との回転差に相当する回転差が生ずることとなる。そして、パイロットクラッチ１５は、その作動により、フロントハウジング３と第１カム１９とをトルク伝達可能に連結することで、フロントハウジング３とインナシャフト７（第１カム１９）との回転差に基づくトルクをカム機構１６に伝達するようになっている。   That is, the first cam 19 having the ball member 21 sandwiched between it and the second cam 20 is in a state of rotating integrally with the second cam 20, that is, the inner shaft 7 when the pilot clutch 15 is not operated. A rotational difference corresponding to the rotational difference between the front housing 3 and the inner shaft 7 is generated between the front housing 3 and the first cam 19. The pilot clutch 15 is connected to the front housing 3 and the first cam 19 so as to be able to transmit torque by the operation thereof, so that the torque based on the rotational difference between the front housing 3 and the inner shaft 7 (first cam 19). Is transmitted to the cam mechanism 16.

つまり、本実施形態の駆動力伝達装置１では、パイロットクラッチ１５の作動により、フロントハウジング３とインナシャフト７との回転差に基づくトルクがカム機構１６に伝達され、カム機構１６は、そのトルクにより生ずる第１カム１９と第２カム２０との間の回転差に基づいて同第２カム２０を軸方向メインクラッチ側に移動させる。即ち、カム機構１６は、パイロットクラッチ１５を介して伝達されたフロントハウジング３とインナシャフト７との回転差に基づくトルクを軸方向の押圧力に変換する。そして、その第２カム２０がメインクラッチ１４を押圧することにより、同メインクラッチ１４が作動、即ちフロントハウジング３とインナシャフト７とがトルク伝達可能に連結されるように構成されている。   That is, in the driving force transmission device 1 of the present embodiment, the torque based on the rotational difference between the front housing 3 and the inner shaft 7 is transmitted to the cam mechanism 16 by the operation of the pilot clutch 15, and the cam mechanism 16 Based on the rotational difference between the first cam 19 and the second cam 20 that occurs, the second cam 20 is moved to the axial main clutch side. That is, the cam mechanism 16 converts the torque based on the rotational difference between the front housing 3 and the inner shaft 7 transmitted via the pilot clutch 15 into a pressing force in the axial direction. When the second cam 20 presses the main clutch 14, the main clutch 14 is operated, that is, the front housing 3 and the inner shaft 7 are connected so as to transmit torque.

ここで、本実施形態のパイロットクラッチ１５は、電磁石２５を駆動源とする電磁クラッチとして構成されている。具体的には、リヤハウジング６には、フロントハウジング３の筒外（反フロントハウジング側、図１（ａ）中、右側）に開口する環状溝２６が形成されており、電磁石２５は、この環状溝２６内に収容されている。尚、本実施形態では、リヤハウジング６には、その中央孔６ａから軸方向、反フロントハウジング側に延びる円筒部６ｂが設けられており、電磁石２５は、この円筒部６ｂに設けられたボール軸受２７によりリヤハウジング６（及びフロントハウジング３）と相対回転可能に支承されている。   Here, the pilot clutch 15 of the present embodiment is configured as an electromagnetic clutch using the electromagnet 25 as a drive source. Specifically, the rear housing 6 is formed with an annular groove 26 that opens to the outside of the front housing 3 (on the side opposite to the front housing, the right side in FIG. 1A). It is accommodated in the groove 26. In the present embodiment, the rear housing 6 is provided with a cylindrical portion 6b extending from the central hole 6a in the axial direction to the front housing side, and the electromagnet 25 is a ball bearing provided in the cylindrical portion 6b. 27 is supported by the rear housing 6 (and the front housing 3) so as to be relatively rotatable.

また、本実施形態では、リヤハウジング６の外周とフロントハウジング３の内周との間、及びリヤハウジング６の内周とインナシャフト７の外周との間には、シール部材２８ａ，２８ｂが介在されている。即ち、メインクラッチ１４及びパイロットクラッチ１５を収容するフロントハウジング３の筒内、詳しくはフロントハウジング３の内周、連結部材２のフランジ部２ｂ、インナシャフト７の外周、及びリヤハウジング６に囲まれた空間は、液密に構成されており、同空間には潤滑油が充填されている。そして、メインクラッチ１４及びパイロットクラッチ１５は、その各インナクラッチプレート１８，２４と各アウタクラッチプレート１７，２３とが潤滑油が介在された状態で摩擦係合する湿式の摩擦クラッチ機構として構成されている。   In this embodiment, seal members 28 a and 28 b are interposed between the outer periphery of the rear housing 6 and the inner periphery of the front housing 3, and between the inner periphery of the rear housing 6 and the outer periphery of the inner shaft 7. ing. That is, it is surrounded by the cylinder of the front housing 3 that accommodates the main clutch 14 and the pilot clutch 15, specifically, the inner periphery of the front housing 3, the flange portion 2 b of the connecting member 2, the outer periphery of the inner shaft 7, and the rear housing 6. The space is liquid-tight, and the space is filled with lubricating oil. The main clutch 14 and the pilot clutch 15 are configured as a wet friction clutch mechanism in which the inner clutch plates 18 and 24 and the outer clutch plates 17 and 23 are frictionally engaged with each other with lubricating oil interposed therebetween. Yes.

また、フロントハウジング３の筒内には、円環状に形成されたアーマチャ２９が、同アーマチャ２９とリヤハウジング６との間に上記アウタクラッチプレート２３及びインナクラッチプレート２４を挟む位置において、軸方向に摺動可能にスプライン嵌合されている。そして、本実施形態のパイロットクラッチ１５は、このアーマチャ２９が、電磁石２５の電磁力に吸引され、リヤハウジング６との間に各アウタクラッチプレート２３及びインナクラッチプレート２４を挟み込むように移動することにより、該各アウタクラッチプレート２３及びインナクラッチプレート２４が摩擦係合するように構成されている。なお、本実施形態では、フロントハウジング３が非磁性材料からなるため、これにより磁束漏れが防止され、図１に鎖線で示すような磁気回路が形成される。   An annular armature 29 is formed in the cylinder of the front housing 3 in the axial direction at a position where the outer clutch plate 23 and the inner clutch plate 24 are sandwiched between the armature 29 and the rear housing 6. The spline is slidably fitted. The pilot clutch 15 according to the present embodiment is such that the armature 29 is attracted by the electromagnetic force of the electromagnet 25 and moves so as to sandwich the outer clutch plate 23 and the inner clutch plate 24 between the armature 29 and the rear housing 6. The outer clutch plate 23 and the inner clutch plate 24 are configured to be frictionally engaged. In the present embodiment, since the front housing 3 is made of a nonmagnetic material, magnetic flux leakage is prevented thereby, and a magnetic circuit as shown by a chain line in FIG. 1 is formed.

このように、本実施形態の駆動力伝達装置１では、電磁石２５に対する電力供給を通じてパイロットクラッチ１５の作動（摩擦係合力）を制御することが可能である。そして、このパイロットクラッチ１５の作動を通じてメインクラッチ１４の作動、即ち、フロントハウジング３とインナシャフト７との間で伝達可能な駆動力を自在に制御可能な構成となっている。   As described above, in the driving force transmission device 1 according to the present embodiment, the operation (friction engagement force) of the pilot clutch 15 can be controlled through power supply to the electromagnet 25. The operation of the main clutch 14, that is, the driving force that can be transmitted between the front housing 3 and the inner shaft 7 can be freely controlled through the operation of the pilot clutch 15.

次に、前記のように構成された連結部材及びフロントハウジングの連結構造の作用について説明する。
本実施形態では、連結部材２の連結部材側嵌合部２ｃがフロントハウジング３の嵌合部３ａに内嵌されている。これにより、連結部材２とフロントハウジング３とが径方向で係合し、連結部材２のフロントハウジング３に対する径方向の移動が規制される。また、連結部材２の連結部材側嵌合部２ｃがフロントハウジング３の嵌合部３ａに内嵌された状態で、フロントハウジング３の筒内側から連結部材側嵌合部２ｃのネジ部２ｅに、抜止部としてのナット２ｆが螺着される。これにより、フロントハウジング３の嵌合部３ａの内端部３ｅが連結部材２のフランジ部２ｂとナット２ｆとの間に配置され、フロントハウジング３の嵌合部３ａが連結部材２のフランジ部２ｂ若しくはナット２ｆと軸方向で係合し、連結部材２のフロントハウジング３に対する軸方向の移動が規制される。また、連結部材２とフロントハウジング３とが連結された状態で、連結部材２の各係合凸部２ｉは、周方向で隣り合う被係合凸部３ｃの間に配置される。これにより、連結部材２は、フロントハウジング３と周方向で係合し、効率的なトルク伝達が可能となる。即ち、ボルトを用いることなく連結部材２及びフロントハウジング３をトルク伝達可能に連結することができる。 Next, the operation of the connecting structure of the connecting member and the front housing configured as described above will be described.
In the present embodiment, the connecting member side fitting portion 2 c of the connecting member 2 is fitted into the fitting portion 3 a of the front housing 3. Thereby, the connecting member 2 and the front housing 3 are engaged in the radial direction, and the movement of the connecting member 2 in the radial direction with respect to the front housing 3 is restricted. Further, in a state where the connecting member side fitting portion 2c of the connecting member 2 is fitted into the fitting portion 3a of the front housing 3, the screw portion 2e of the connecting member side fitting portion 2c is connected to the screw portion 2e of the connecting member side fitting portion 2c. A nut 2f as a retaining portion is screwed. Thus, the inner end 3e of the fitting portion 3a of the front housing 3 is disposed between the flange portion 2b of the connecting member 2 and the nut 2f, and the fitting portion 3a of the front housing 3 is the flange portion 2b of the connecting member 2. Alternatively, the nut 2f is engaged in the axial direction, and the axial movement of the connecting member 2 relative to the front housing 3 is restricted. Further, in a state where the connecting member 2 and the front housing 3 are connected, each engaging convex portion 2i of the connecting member 2 is disposed between the engaged convex portions 3c adjacent in the circumferential direction. Thereby, the connecting member 2 is engaged with the front housing 3 in the circumferential direction, and efficient torque transmission is possible. That is, the connecting member 2 and the front housing 3 can be connected so as to transmit torque without using bolts.

また、図１（ｂ）に示すように、連結部材２とフロントハウジング３とが連結された状態で、連結部材側嵌合部２ｃに設けられたナット２ｆとフロントハウジング３の嵌合部３ａとの間に軸方向の隙間Ｃが設けられている。これにより、該隙間Ｃの分だけ連結部材２及びフロントハウジング３の熱膨張が許容され、隙間Ｃによりフロントハウジング３を構成する材料と連結部材２を構成する材料との熱膨張率の違いに起因する熱応力が緩和される。   Further, as shown in FIG. 1B, in a state where the connecting member 2 and the front housing 3 are connected, a nut 2f provided on the connecting member side fitting portion 2c and the fitting portion 3a of the front housing 3 A gap C in the axial direction is provided between the two. As a result, thermal expansion of the connecting member 2 and the front housing 3 is allowed by the gap C, and due to the difference in thermal expansion coefficient between the material constituting the front housing 3 and the material constituting the connecting member 2 due to the gap C. Thermal stress to be relieved.

また、連結部材２の係合凸部２ｉは、連結部材側嵌合部２ｃよりも径方向外側に設けられている。これにより、連結部材側嵌合部２ｃよりも径方向外側に設けられた係合凸部２ｉと、フロントハウジング３の軸方向外面Ｓに形成された被係合凸部３ｃとが係合することによって、軸心が径方向に離れた位置でトルク伝達が行われる。   Moreover, the engaging convex part 2i of the connection member 2 is provided in the radial direction outer side rather than the connection member side fitting part 2c. Thereby, the engagement convex part 2i provided in the radial direction outer side than the connection member side fitting part 2c and the to-be-engaged convex part 3c formed in the axial direction outer surface S of the front housing 3 engage. Thus, torque transmission is performed at a position where the shaft center is separated in the radial direction.

また、図１（ａ）に示すように、連結部材２の連結部材側嵌合部２ｃの内周には、ボール軸受５が固定されており、該ボール軸受５を介して、インナシャフト７が、連結部材２に対して回転自在に支持されている。これにより、連結部材２の回転中心とインナシャフト７の回転中心とを一致させ易くなる。   Further, as shown in FIG. 1A, a ball bearing 5 is fixed to the inner periphery of the connecting member side fitting portion 2 c of the connecting member 2, and the inner shaft 7 is connected via the ball bearing 5. The connecting member 2 is supported rotatably. Thereby, it becomes easy to make the rotation center of the connecting member 2 coincide with the rotation center of the inner shaft 7.

以上、本実施形態によれば、以下のような作用・効果を得ることができる。
（１）連結部材２は、駆動力が入力される軸部２ａと、フロントハウジング３の嵌合部３ａに嵌入される連結部材側嵌合部２ｃと、該連結部材側嵌合部２ｃの外周側にてフロントハウジング３の被係合凸部３ｃと周方向で係合する係合凸部２ｉとを備えている。そして、フロントハウジング３及び連結部材２は、連結部材側嵌合部２ｃの外周に設けられて嵌合部３ａと軸方向に係合するナット２ｆにより軸方向への移動が規制されて相対回転不能に連結される。 As described above, according to the present embodiment, the following operations and effects can be obtained.
(1) The connecting member 2 includes a shaft portion 2a to which a driving force is input, a connecting member side fitting portion 2c that is fitted into the fitting portion 3a of the front housing 3, and an outer periphery of the connecting member side fitting portion 2c. On the side, an engaged convex portion 3c of the front housing 3 and an engaging convex portion 2i engaged in the circumferential direction are provided. The front housing 3 and the connecting member 2 are provided on the outer periphery of the connecting member-side fitting portion 2c and are restricted from moving in the axial direction by a nut 2f that engages with the fitting portion 3a in the axial direction, so that relative rotation is impossible. Connected to

上記構成によれば、連結部材２及びフロントハウジング３は、連結部材側嵌合部２ｃの外周に設けられて嵌合部３ａと軸方向に係合するナット２ｆにより軸方向への移動が規制されることにより連結される。このため、フロントハウジング３の底部にはボルト穴を形成するためのスペース（若しくは底部の厚み）が不要となり、これにより軸方向長さの短縮化を図ることができる。加えて、フランジ部２ｂにボルト用の挿通孔を形成する必要がなく、同挿通孔の形成によるフランジ部２ｂの強度低下を抑えるためにフランジ部２ｂを軸方向に厚く形成する必要がない。その結果、フランジ部２ｂの厚みを薄くしてさらなる軸方向長さの短縮化及び軽量化を図ることができる。そして、連結部材２の係合凸部２ｉとフロントハウジング３の被係合凸部３ｃとを周方向で係合させることで、連結部材２とフロントハウジング３との間の相対回転を規制し、これにより高いトルク伝達効率を確保することができる。その結果、トルク伝達効率の低下を招くことなく軽量化、及び短軸化を図ることができる。   According to the above configuration, the connecting member 2 and the front housing 3 are restricted from moving in the axial direction by the nut 2f that is provided on the outer periphery of the connecting member side fitting portion 2c and engages the fitting portion 3a in the axial direction. Are connected. For this reason, a space for forming a bolt hole (or thickness of the bottom) is not required at the bottom of the front housing 3, thereby shortening the axial length. In addition, it is not necessary to form a bolt insertion hole in the flange portion 2b, and it is not necessary to form the flange portion 2b thick in the axial direction in order to suppress a decrease in strength of the flange portion 2b due to the formation of the insertion hole. As a result, the flange portion 2b can be made thinner to further reduce the axial length and weight. And by engaging the engaging convex part 2i of the connecting member 2 and the engaged convex part 3c of the front housing 3 in the circumferential direction, the relative rotation between the connecting member 2 and the front housing 3 is restricted, Thereby, high torque transmission efficiency can be ensured. As a result, the weight can be reduced and the shaft can be shortened without reducing the torque transmission efficiency.

（２）連結部材２がフロントハウジング３に連結された状態で、連結部材２（ナット２ｆ）とフロントハウジング３の嵌合部３ａ（内端部３ｅ）との間に軸方向の隙間Ｃを設けた。   (2) In a state where the connecting member 2 is connected to the front housing 3, an axial gap C is provided between the connecting member 2 (nut 2f) and the fitting portion 3a (inner end portion 3e) of the front housing 3. It was.

上記構成によれば、連結部材２とフロントハウジング３とを連結した状態で、連結部材２とフロントハウジング３との間に設けた軸方向の隙間Ｃにより、連結部材２を構成する材料とフロントハウジング３を構成する材料との熱膨張率の違いに起因する熱応力を緩和することができる。その結果、連結部材２とフロントハウジング３との熱膨張率の違いに起因する熱応力による熱疲労破壊を好適に防止することができる。   According to the above configuration, the material constituting the connecting member 2 and the front housing are formed by the axial gap C provided between the connecting member 2 and the front housing 3 in a state where the connecting member 2 and the front housing 3 are connected. The thermal stress resulting from the difference in thermal expansion coefficient with the material constituting 3 can be relaxed. As a result, thermal fatigue failure due to thermal stress due to the difference in thermal expansion coefficient between the connecting member 2 and the front housing 3 can be suitably prevented.

（３）インナシャフト７は、連結部材２の連結部材側嵌合部２ｃとの間に設けられたボール軸受５によって回転自在に支持される。
本発明によれば、フロントハウジング３の筒内に配置されたインナシャフト７が、連結部材２によって支持される。このため、連結部材２の回転中心とインナシャフト７の回転中心とを一致させ易くなり、連結部材２の回転中心とインナシャフト７の回転中心とがずれることに起因する振動を好適に防止することができる。 (3) The inner shaft 7 is rotatably supported by a ball bearing 5 provided between the connecting member 2 and the connecting member side fitting portion 2c.
According to the present invention, the inner shaft 7 disposed in the cylinder of the front housing 3 is supported by the connecting member 2. For this reason, it becomes easy to make the rotation center of the connecting member 2 and the rotation center of the inner shaft 7 coincide with each other, and it is possible to suitably prevent vibration caused by the shift of the rotation center of the connecting member 2 and the rotation center of the inner shaft 7. Can do.

（４）連結部材２の連結部材側嵌合部２ｃは、フロントハウジング３の嵌合部３ａに内嵌されるとともに、抜止部として、外周面２ｇにナット２ｆが螺着される。
上記構成によれば、連結部材２の連結部材側嵌合部２ｃの外周面２ｇにナット２ｆを螺着することで、容易な構成で連結部材２とフロントハウジング３とを連結することができる。 (4) The connecting member side fitting portion 2c of the connecting member 2 is fitted into the fitting portion 3a of the front housing 3, and a nut 2f is screwed to the outer peripheral surface 2g as a retaining portion.
According to the said structure, the connection member 2 and the front housing 3 can be connected with an easy structure by screwing the nut 2f to the outer peripheral surface 2g of the connection member side fitting part 2c of the connection member 2. FIG.

（５）連結部材２の係合凸部２ｉは、連結部材側嵌合部２ｃよりも径方向外側に設けられた。
上記構成によれば、連結部材側嵌合部２ｃよりも径方向外側に設けられた連結部材２の係合凸部２ｉとフロントハウジング３の被係合凸部３ｃにより連結部材２とフロントハウジング３が周方向に係合することによって、軸心から径方向に離れた位置でトルク伝達が行われる。このため、トルク伝達に必要な係合凸部２ｉ及び被係合凸部３ｃの面積をより小さくすることができ、より小型化することが可能となる。 (5) The engaging convex part 2i of the connection member 2 was provided in the radial direction outer side rather than the connection member side fitting part 2c.
According to the above configuration, the connecting member 2 and the front housing 3 are formed by the engaging convex portion 2i of the connecting member 2 and the engaged convex portion 3c of the front housing 3 provided on the radially outer side than the connecting member side fitting portion 2c. By engaging in the circumferential direction, torque transmission is performed at a position away from the axial center in the radial direction. For this reason, the area of the engagement convex part 2i and the to-be-engaged convex part 3c required for torque transmission can be made smaller, and it becomes possible to reduce in size further.

尚、本実施形態は、以下のように変更してもよい。
・本実施形態では、連結部材２のフランジ部２ｂに設けた係合凸部２ｉとフロントハウジング３の軸方向外面Ｓに設けた被係合凸部３ｃとを周方向で係合させて、連結部材２とフロントハウジング３とを相対回転不能としたが、このような態様に限定されない。例えば、図３に示すように、連結部材２のフランジ部２ｂにフロントハウジング３と径方向で対向する略円筒状の対向部３０を設け、該対向部３０に設けた係合凸部３１とフロントハウジング３の外周面に設けた被係合凸部３２とを周方向で係合させて、連結部材２とフロントハウジング３とを相対回転不能としてもよい。 In addition, you may change this embodiment as follows.
-In this embodiment, the engagement convex part 2i provided in the flange part 2b of the connection member 2 and the to-be-engaged convex part 3c provided in the axial direction outer surface S of the front housing 3 are engaged in the circumferential direction, and it connects. Although the member 2 and the front housing 3 are not relatively rotatable, the present invention is not limited to such a mode. For example, as shown in FIG. 3, the flange portion 2 b of the connecting member 2 is provided with a substantially cylindrical facing portion 30 that faces the front housing 3 in the radial direction, and the engagement convex portion 31 provided on the facing portion 30 and the front The engaging projection 32 provided on the outer peripheral surface of the housing 3 may be engaged in the circumferential direction so that the connecting member 2 and the front housing 3 cannot be rotated relative to each other.

・本実施形態では、連結部材２とフロントハウジング３とが連結された状態で、連結部材側嵌合部２ｃのナット２ｆとフロントハウジング３の嵌合部３ａとの間に軸方向の隙間Ｃを設けたが、該ナット２ｆにより連結部材２とフロントハウジング３とを相対変位不能に締結してもよい。   In this embodiment, in the state where the connecting member 2 and the front housing 3 are connected, an axial gap C is provided between the nut 2f of the connecting member side fitting portion 2c and the fitting portion 3a of the front housing 3. Although provided, the connecting member 2 and the front housing 3 may be fastened together with the nut 2f so as not to be relatively displaced.

・本実施形態では、連結部材２のフランジ部２ｂに係合凸部２ｉを設け、フロントハウジング３に被係合凸部３ｃを設けたが、フランジ部２ｂに形成された係合凸部２ｉに係合する被係合凹部を、フロントハウジング３に設けてもよい。また、フロントハウジング３に形成された被係合凸部３ｃに係合する係合凹部をフランジ部２ｂに設けてもよい。   In the present embodiment, the engaging convex portion 2i is provided on the flange portion 2b of the connecting member 2 and the engaged convex portion 3c is provided on the front housing 3, but the engaging convex portion 2i formed on the flange portion 2b An engaged recess to be engaged may be provided in the front housing 3. Moreover, you may provide the engaging recessed part engaged with the to-be-engaged convex part 3c formed in the front housing 3 in the flange part 2b.

・本実施形態では、連結部材２のフランジ部２ｂには、複数の係合凸部２ｉを放射状に設け、フロントハウジング３の嵌合部３ａの軸方向外面Ｓには、複数の被係合凸部３ｃを放射状に設けたが、係合凸部２ｉ及び被係合凸部３ｃの形状は、連結部材２とフロントハウジング３とが周方向に係合可能な形状であれば適宜変更可能である。例えば、係合凸部２ｉ及び被係合凸部３ｃを、互いに平行な直線状に形成してもよく、また、断面多角形状の凹部及び凸部としてもよい。また、本実施形態では、係合凸部２ｉ及び被係合凸部３ｃを複数設けたが、１つであってもよい。   In the present embodiment, the flange portion 2b of the connecting member 2 is provided with a plurality of engaging projections 2i radially, and the engagement surface 3a of the fitting portion 3a of the front housing 3 has a plurality of engaged projections. Although the portions 3c are provided radially, the shapes of the engaging protrusions 2i and the engaged protrusions 3c can be appropriately changed as long as the connecting member 2 and the front housing 3 can be engaged in the circumferential direction. . For example, the engaging convex part 2i and the engaged convex part 3c may be formed in a straight line parallel to each other, or may be a concave part and a convex part having a polygonal cross section. Further, in the present embodiment, a plurality of engaging convex portions 2i and engaged convex portions 3c are provided, but one may be provided.

・本実施形態では、連結部材側嵌合部２ｃにナット２ｆを螺着して、連結部材２とフロントハウジング３との間の軸方向への移動を規制したが、このような態様に限定されず、ナット２ｆを連結部材側嵌合部２ｃに相対移動不能に溶着してもよい。また、本実施形態においては、ダブルナット構造としてもよい。また、例えば、スナップリングにより、連結部材２とフロントハウジング３との間の軸方向への移動を規制してもよい。   In the present embodiment, the nut 2f is screwed into the connecting member side fitting portion 2c to restrict the movement in the axial direction between the connecting member 2 and the front housing 3. However, the present invention is limited to such a mode. Alternatively, the nut 2f may be welded to the connecting member side fitting portion 2c so as not to be relatively movable. Moreover, in this embodiment, it is good also as a double nut structure. Further, for example, the movement in the axial direction between the connecting member 2 and the front housing 3 may be restricted by a snap ring.

・本実施形態では、連結部材２の連結部材側嵌合部２ｃの内周に、インナシャフト７を支持するボール軸受５を固定したが、フロントハウジング３の内周にインナシャフト７を支持する軸受を固定してもよい。   In this embodiment, the ball bearing 5 that supports the inner shaft 7 is fixed to the inner periphery of the connecting member side fitting portion 2 c of the connecting member 2, but the bearing that supports the inner shaft 7 to the inner periphery of the front housing 3. May be fixed.

・本実施形態では、本発明をフロントハウジング３及び連結部材２が異なる材料からなるものに適用したが、フロントハウジング３及び連結部材２が同一の材料からなるものに適用してもよい。   In the present embodiment, the present invention is applied to the front housing 3 and the connecting member 2 made of different materials. However, the front housing 3 and the connecting member 2 may be applied to the same material.

（ａ）駆動力伝達装置の概略断面図、（ｂ）同図（ａ）の一部拡大図。(A) The schematic sectional drawing of a driving force transmission device, (b) The elements on larger scale of the same figure (a). 図１（ａ）のＡ−Ａ線断面図。The AA sectional view taken on the line of Fig.1 (a). 別例の駆動力伝達装置の一部概略断面図。The partial schematic sectional drawing of the driving force transmission apparatus of another example.

符号の説明Explanation of symbols

１…駆動力伝達装置、２…連結部材、２ａ…軸部、２ｃ…連結部材側嵌合部、２ｆ…抜止部としてのナット、２ｇ…外周面、２ｉ，３１…連結部材側係合部としての係合凸部、３…第１回転体としてのフロントハウジン、３ａ…嵌合部、３ｃ，３２…係合部としての被係合凸部、５…軸受としてのボール軸受、７…第２回転体としてのインナシャフト、１４…連結機構としてのメインクラッチ、Ｃ…隙間、Ｓ…軸方向外面。 DESCRIPTION OF SYMBOLS 1 ... Driving force transmission apparatus, 2 ... Connection member, 2a ... Shaft part, 2c ... Connection member side fitting part, 2f ... Nut as a retaining part, 2g ... Outer peripheral surface, 2i, 31 ... As a connection member side engagement part 3... Front housing as the first rotating body, 3 a... Fitting portion, 3 c and 32 .. engaged protrusion as the engaging portion, 5... Ball bearing as the bearing, 7. Inner shaft as rotating body, 14 ... main clutch as connecting mechanism, C ... gap, S ... axial outer surface.

Claims (4)

筒状に形成された第１回転体と、該第１回転体の筒内に回転自在に同軸配置された第２回転体と、前記第１回転体と前記第２回転体との間に配置されて前記第１回転体及び前記第２回転体をトルク伝達可能に連結する連結機構と、前記第１回転体に相対回転不能に連結される連結部材とを備えた駆動力伝達装置であって、
前記第１回転体は、その軸方向の一端側に、前記連結部材と係合する係合部と、該係合部の内周側に形成された嵌合部とを備え、
前記連結部材は、駆動力が入力される軸部と、前記嵌合部に嵌入される連結部材側嵌合部と、該連結部材側嵌合部の外周側にて前記第１回転体の係合部と周方向で係合する連結部材側係合部とを備え、
前記第１回転体及び前記連結部材は、前記連結部材側嵌合部の外周に設けられて前記嵌合部と軸方向に係合する抜止部により軸方向への移動が規制されて相対回転不能に連結されること、を特徴とする駆動力伝達装置。 A first rotating body formed in a cylindrical shape, a second rotating body that is coaxially arranged rotatably in a cylinder of the first rotating body, and disposed between the first rotating body and the second rotating body A driving force transmission device comprising: a coupling mechanism that couples the first rotating body and the second rotating body so as to transmit torque; and a coupling member that is coupled to the first rotating body so as not to be relatively rotatable. ,
The first rotating body includes, on one end side in the axial direction, an engaging portion that engages with the connecting member, and a fitting portion that is formed on the inner peripheral side of the engaging portion,
The connecting member includes a shaft portion to which driving force is input, a connecting member-side fitting portion that is fitted into the fitting portion, and an engagement of the first rotating body on the outer peripheral side of the connecting member-side fitting portion. A coupling member side engaging portion that engages with the joint portion in the circumferential direction,
The first rotating body and the connecting member are provided on the outer periphery of the connecting member-side fitting portion, and the movement in the axial direction is restricted by a retaining portion that engages with the fitting portion in the axial direction, so that relative rotation is impossible. And a driving force transmission device characterized by being coupled to. 請求項１に記載の駆動力伝達装置において、
前記連結部材と前記第１回転体とを連結した状態で、前記連結部材と前記第１回転体との間に軸方向の隙間を設けたこと、を特徴とする駆動力伝達装置。 The driving force transmission device according to claim 1,
A driving force transmission device characterized in that an axial gap is provided between the connecting member and the first rotating body in a state where the connecting member and the first rotating body are connected. 請求項１〜２の何れか１項に記載の駆動力伝達装置において、
前記第２回転体は、前記連結部材側嵌合部との間に設けられた軸受によって回転自在に支持されること、を特徴とする駆動力伝達装置。 In the driving force transmission device according to any one of claims 1 and 2,
The second rotating body is rotatably supported by a bearing provided between the connecting member side fitting portion and the driving force transmitting device. 請求項３に記載の駆動力伝達装置において、
前記連結部材側嵌合部は、前記嵌合部に内嵌されるとともに、前記抜止部として、外周面にナットが螺着されること、を特徴とする駆動力伝達装置。 In the driving force transmission device according to claim 3,
The connecting member side fitting portion is fitted into the fitting portion, and a nut is screwed onto the outer peripheral surface as the retaining portion.
JP2007201883A 2007-08-02 2007-08-02 Driving power transmitting apparatus Pending JP2009036323A (en)

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JPH10213164A (en) * 1997-01-30 1998-08-11 Toyoda Mach Works Ltd Driving force transmission device
JP2000179584A (en) * 1998-10-07 2000-06-27 Tochigi Fuji Ind Co Ltd Clutch device
JP2000356229A (en) * 1999-04-12 2000-12-26 Tochigi Fuji Ind Co Ltd Coupling and differential gear
JP2002235774A (en) * 2000-12-05 2002-08-23 Tochigi Fuji Ind Co Ltd Electromagnetic coupling
JP2002266897A (en) * 2001-03-08 2002-09-18 Tochigi Fuji Ind Co Ltd Electromagnetic coupling
JP2002340044A (en) * 2001-05-17 2002-11-27 Tochigi Fuji Ind Co Ltd Electromagnetic coupling
JP2002340042A (en) * 2001-05-17 2002-11-27 Tochigi Fuji Ind Co Ltd Coupling
JP2002340038A (en) * 2001-05-17 2002-11-27 Tochigi Fuji Ind Co Ltd Electromagnetic clutch mechanism and coupling using the same
JP2002364675A (en) * 2001-06-06 2002-12-18 Tochigi Fuji Ind Co Ltd Electromagnetic clutch mechanism and coupling using the mechanism

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