JP2018009599A - Driving force transmission device and differential device - Google Patents

Driving force transmission device and differential device Download PDF

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JP2018009599A
JP2018009599A JP2016137046A JP2016137046A JP2018009599A JP 2018009599 A JP2018009599 A JP 2018009599A JP 2016137046 A JP2016137046 A JP 2016137046A JP 2016137046 A JP2016137046 A JP 2016137046A JP 2018009599 A JP2018009599 A JP 2018009599A
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differential
yoke
axial direction
moving
respect
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JP6759782B2 (en
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正 吉坂
Tadashi Yoshizaka
正 吉坂
鶴 金
Hak Kim
鶴 金
康憲 神谷
Yasunori Kamiya
康憲 神谷
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JTEKT Corp
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JTEKT Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a driving force transmission device and a differential device capable of connecting/disconnecting driving force transmission, and capable of suppressing increase in weight and size of a differential case.SOLUTION: A differential device 1 includes: a differential case 2 stored in a differential carrier 9; a differential mechanism 3 arranged relatively rotatably with respect to the differential case 2; a connection member 5 for connecting a pair of pinion shafts 30 of the differential mechanism 3 and the differential case 2 relatively rotatably by axial direction movement; and an actuator 6 for generating a movement force for moving the connection member 5 in the axial direction. The actuator 6 includes; an electromagnet 61; a yoke 62; a restriction member 65 comprising a soft magnetic body and for restricting the axial direction movement of the yoke 62; and an armature 63 comprising a soft magnetic body and for outputting the movement force by moving in the axial direction with respect to the differential case 2. The armature 63 includes an annular part 632 opposing to the restriction member 65, and moves in the axial direction with respect to the yoke 62 by a magnetic flux passing in a space between the restriction member 65 and the annular part 632.SELECTED DRAWING: Figure 1

Description

本発明は、駆動力伝達装置及び差動装置に関する。   The present invention relates to a driving force transmission device and a differential device.

従来、車両の左右の車輪に差動を許容して駆動力を配分するディファレンシャル装置には、相対回転可能な回転部材間の差動を制限する噛み合いクラッチを備えたものがある（例えば、特許文献１参照）。   2. Description of the Related Art Conventionally, a differential device that allows a differential to be distributed between left and right wheels of a vehicle and distributes driving force includes a meshing clutch that limits differential between rotating members that can rotate relative to each other (for example, Patent Documents). 1).

特許文献１に記載のディファレンシャル装置は、デフケースと、デフケースに固定されたピニオンシャフトに軸支された一対のピニオンギヤと、一対のピニオンギヤにギヤ軸を直交させて噛合する一対のサイドギヤと、デフケースに形成された孔部に回転方向に係合して軸方向移動可能に配置された断続部材と、断続部材を軸方向に移動させるアクチュエータとを有している。   The differential device described in Patent Document 1 is formed in a differential case, a pair of pinion gears pivotally supported on a pinion shaft fixed to the differential case, a pair of side gears that mesh with the pair of pinion gears with a gear shaft orthogonal thereto, and a differential case An intermittent member that is engaged with the formed hole portion in the rotational direction so as to be axially movable, and an actuator that moves the intermittent member in the axial direction.

断続部材は、一対のサイドギヤのうち一方のサイドギヤに噛み合う噛み合い歯を有し、デフケースと共に回転する。アクチュエータは、電磁石と、電磁石の磁力によって軸方向に移動する可動部材とを有している。電磁石は、電磁コイルと、電磁コイルを囲むように配置されたコアとによって構成されている。可動部材は、軟磁性材料からなるプランジャと、電磁石の磁束がデフケースへ漏れることを防止する非磁性材料からなるリングとによって構成されている。可動部材は電磁石の内側に配置され、電磁石と断続部材とは、軸方向に並んで配置されている。   The intermittent member has meshing teeth that mesh with one side gear of the pair of side gears, and rotates together with the differential case. The actuator has an electromagnet and a movable member that moves in the axial direction by the magnetic force of the electromagnet. The electromagnet includes an electromagnetic coil and a core arranged so as to surround the electromagnetic coil. The movable member includes a plunger made of a soft magnetic material and a ring made of a non-magnetic material that prevents the magnetic flux of the electromagnet from leaking to the differential case. The movable member is disposed inside the electromagnet, and the electromagnet and the intermittent member are disposed side by side in the axial direction.

電磁石に通電されると、プランジャが断続部材側に移動し、リングが断続部材に固定されたプレートを介して断続部材を押圧する。断続部材は、この押圧力を受けて軸方向に移動し、一方のサイドギヤに噛み合う。これにより、デフケースと一方のサイドギヤとの相対回転が規制され、これに伴って一対のサイドギヤ間の差動回転も規制される。   When the electromagnet is energized, the plunger moves to the intermittent member side, and the ring presses the intermittent member via a plate fixed to the intermittent member. The intermittent member moves in the axial direction in response to the pressing force, and meshes with one side gear. As a result, relative rotation between the differential case and the one side gear is restricted, and accordingly, differential rotation between the pair of side gears is also restricted.

特開２０１０−８４９３０号公報JP 2010-84930 A

特許文献１のディファレンシャル装置は、その図１において符号７９で示されるコアの断面形状が電磁コイルを囲むように形成された略四角形状であり、電磁コイルの内周面の一部に対向する部分が不連続に形成されている。プランジャは、この不連続部分に軸方向の端部が対向して配置され、電磁コイルへの通電により発生する磁束の一部を構成する。   The differential device of Patent Document 1 has a substantially square shape in which the cross-sectional shape of the core denoted by reference numeral 79 in FIG. 1 is formed so as to surround the electromagnetic coil, and is a portion facing a part of the inner peripheral surface of the electromagnetic coil. Is formed discontinuously. The plunger is arranged such that the end portion in the axial direction is opposed to the discontinuous portion, and constitutes a part of the magnetic flux generated by energizing the electromagnetic coil.

このような形状のコアは、単一の部材で形成することが困難であるので、例えば特許文献１の図１に示されているように、電磁コイルの軸方向の一方の側面及び内周面の一部を覆う部材と、電磁コイルの軸方向の他方の側面を覆う部材と、電磁コイルの外周面を覆う部材との３つの部材を溶接等により結合して構成する必要がある。このため、コアの構造及び製造工程が複雑となり、製造コストの上昇を招来してしまう。   Since it is difficult to form the core having such a shape with a single member, for example, as shown in FIG. 1 of Patent Document 1, one side surface and the inner peripheral surface in the axial direction of the electromagnetic coil It is necessary to combine and form three members, a member that covers a part of the coil, a member that covers the other side surface in the axial direction of the electromagnetic coil, and a member that covers the outer peripheral surface of the electromagnetic coil by welding or the like. For this reason, the structure of the core and the manufacturing process become complicated, leading to an increase in manufacturing cost.

そこで、本発明は、駆動力伝達を断続可能で、かつ、製造コストの増大を抑制することが可能な駆動力伝達装置及び差動装置を提供することを目的とする。   Therefore, an object of the present invention is to provide a driving force transmission device and a differential device that can intermittently transmit driving force and that can suppress an increase in manufacturing cost.

本発明は、上記の目的を達成するため、収容部材に収容された第１回転部材、及び前記第１回転部材と相対回転可能に配置された第２回転部材と、前記第１回転部材に対する軸方向移動によって前記第１回転部材と前記第２回転部材とを相対回転不能に連結する連結部材と、前記連結部材を軸方向移動させる移動力を発生する移動力発生機構とを備え、前記移動発生機構は、電磁石と、前記収容部材に対して回り止めされると共に前記第１回転部材の外周に配置されたヨークと、前記ヨークの前記第１回転部材に対する軸方向移動を規制する軟磁性体からなる規制部材と、前記ヨークに対して軸方向移動して前記移動力を出力する軟磁性体からなる移動部材とを有し、前記移動部材は、前記規制部材と対向する円環部を有し、前記規制部材と前記円環部との間の空間を通過する磁束によって前記ヨークに対して軸方向移動する、駆動力伝達装置を提供する。   In order to achieve the above object, the present invention provides a first rotating member housed in a housing member, a second rotating member disposed so as to be rotatable relative to the first rotating member, and a shaft for the first rotating member. A moving member for connecting the first rotating member and the second rotating member so as not to rotate relative to each other by moving in a direction; and a moving force generating mechanism for generating a moving force for moving the connecting member in the axial direction. The mechanism includes an electromagnet, a yoke that is prevented from rotating with respect to the housing member and disposed on the outer periphery of the first rotating member, and a soft magnetic body that restricts axial movement of the yoke with respect to the first rotating member. And a moving member made of a soft magnetic material that moves in the axial direction with respect to the yoke and outputs the moving force, and the moving member has an annular portion that faces the restricting member. , The regulating member and Axial movement relative to the yoke by the magnetic flux passing through the space between the Kien ring portion, to provide a driving force transmission apparatus.

また、本発明は、上記の目的を達成するため、入力部材に入力された駆動力を一対の出力部材に差動を許容して配分する差動機構と、前記差動機構を収容するデフケースと、前記デフケースと前記差動機構の前記入力部材との間で前記駆動力を伝達するクラッチ機構とを備え、前記クラッチ機構は、前記デフケース内で前記差動機構に対して前記デフケースの回転軸線に沿う中心軸方向に相対移動可能かつ相対回転不能に配置された連結部材、及び前記連結部材に前記中心軸方向への移動力を付与するアクチュエータを有し、前記アクチュエータは、電磁石と、前記デフケースに対して回り止めされると共に前記デフケースの外周に配置されたヨークと、前記ヨークの前記デフケースに対する軸方向移動を規制する軟磁性体からなる規制部材と、前記ヨークに対して軸方向移動して前記移動力を出力する軟磁性体からなる移動部材とを有し、前記移動部材は、前記規制部材と対向する円環部を有し、前記規制部材と前記円環部との間の空間を通過する磁束によって前記ヨークに対して軸方向移動する、差動装置を提供する。   In order to achieve the above object, the present invention provides a differential mechanism that allows a driving force input to an input member to be distributed to a pair of output members while allowing a differential, and a differential case that houses the differential mechanism. A clutch mechanism for transmitting the driving force between the differential case and the input member of the differential mechanism, and the clutch mechanism is disposed on the rotational axis of the differential case with respect to the differential mechanism in the differential case. A connecting member disposed so as to be relatively movable in the central axis direction along which it cannot rotate and an actuator for applying a moving force to the connecting member in the central axis direction. The actuator includes an electromagnet and a differential case. And a restricting member made of a soft magnetic material that restricts axial movement of the yoke with respect to the differential case and a yoke that is prevented from rotating against the differential case. A moving member made of a soft magnetic body that moves in the axial direction with respect to the yoke and outputs the moving force, and the moving member has an annular portion facing the restricting member, and the restricting member And a differential device that moves axially with respect to the yoke by a magnetic flux passing through a space between the ring portion and the annular portion.

本発明によれば、駆動力伝達を断続可能で、かつ、製造コストの増大を抑制することが可能な駆動力伝達装置及び差動装置を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, a driving force transmission device and a differential device which can interrupt driving force transmission and can suppress the increase in manufacturing cost can be provided.

本発明の第１の実施の形態に係る差動装置の構成例を示す断面図である。It is sectional drawing which shows the structural example of the differential gear which concerns on the 1st Embodiment of this invention. 差動装置の分解斜視図である。It is a disassembled perspective view of a differential. 図１に示す差動装置の要部拡大図である。It is a principal part enlarged view of the differential device shown in FIG. 差動装置の動作を示す説明図であり、（ａ）はアクチュエータの非作動状態を示し、（ｂ）はアクチュエータの作動状態を示す。It is explanatory drawing which shows operation | movement of a differential device, (a) shows the non-operation state of an actuator, (b) shows the operation state of an actuator. 本発明の変形例に係る差動装置の要部拡大図である。It is a principal part enlarged view of the differential gear which concerns on the modification of this invention. 本発明の第２の実施の形態に係る変形例に係る差動装置の要部拡大図である。It is a principal part enlarged view of the differential gear which concerns on the modification concerning the 2nd Embodiment of this invention. （ａ）は、本発明の第３の実施の形態に係る差動装置の要部拡大図であり、（ｂ）は（ａ）に示す規制部材及びその周辺部の拡大図である。(A) is a principal part enlarged view of the differential gear which concerns on the 3rd Embodiment of this invention, (b) is an enlarged view of the control member shown to (a), and its peripheral part.

本発明の実施の形態について、図１乃至図４を参照して説明する。なお、以下に説明する実施の形態は、本発明を実施する上での好適な具体例として示すものであり、技術的に好ましい種々の技術的事項を具体的に例示している部分もあるが、本発明の技術的範囲は、この具体的態様に限定されるものではない。   Embodiments of the present invention will be described with reference to FIGS. In addition, although embodiment described below is shown as a suitable specific example in implementing this invention, although there are some parts which have illustrated various technical matters that are technically preferable. The technical scope of the present invention is not limited to this specific embodiment.

（差動装置の構成）
図１は、本発明の第１の実施の形態に係る差動装置の構成例を示す断面図である。図２は、差動装置の分解斜視図である。図３は、図１に示す差動装置の要部拡大図である。 (Configuration of differential device)
FIG. 1 is a cross-sectional view illustrating a configuration example of a differential device according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of the differential. FIG. 3 is an enlarged view of a main part of the differential shown in FIG.

この差動装置１は、車両のエンジン等の駆動源の駆動力を一対の出力軸に差動を許容して配分するために用いられる。より具体的には、本実施の形態に係る差動装置１は、駆動源の駆動力が常に伝達される左右一対の主駆動輪（例えば前輪）と、駆動源の駆動力が走行状態に応じて伝達される左右一対の補助駆動輪（例えば後輪）とを備えた四輪駆動車に搭載され、補助駆動輪の左右の車輪に駆動力を配分するディファレンシャル装置として用いられる。主駆動輪のみに駆動力が伝達される場合、車両が四輪駆動状態となり、主駆動輪及び補助駆動輪に駆動力が伝達される場合、車両が二輪駆動状態となる。差動装置１は、四輪駆動状態において、入力された駆動力を補助駆動輪側の左右のドライブシャフトに配分する。   The differential device 1 is used to allow a driving force of a driving source such as an engine of a vehicle to be distributed to a pair of output shafts while allowing a differential. More specifically, the differential device 1 according to the present embodiment includes a pair of left and right main drive wheels (for example, front wheels) to which the driving force of the driving source is constantly transmitted, and the driving force of the driving source is in accordance with the traveling state. It is mounted on a four-wheel drive vehicle having a pair of left and right auxiliary drive wheels (for example, rear wheels) transmitted in this manner, and is used as a differential device that distributes drive force to the left and right wheels of the auxiliary drive wheels. When the driving force is transmitted only to the main driving wheel, the vehicle is in a four-wheel driving state, and when the driving force is transmitted to the main driving wheel and the auxiliary driving wheel, the vehicle is in a two-wheel driving state. In the four-wheel drive state, the differential device 1 distributes the input driving force to the left and right drive shafts on the auxiliary drive wheel side.

差動装置１は、車体に固定された収容部材としてのデフキャリア９に一対の軸受９１，９２を介して回転可能に支持されたデフケース２と、デフケース２に収容された差動機構３と、デフケース２と差動機構３との間で駆動力を断続可能に伝達するクラッチ機構４とを備えている。デフケース２の内部には、差動機構３を潤滑する潤滑油（デフオイル）が導入される。   The differential device 1 includes a differential case 2 rotatably supported via a pair of bearings 91 and 92 on a differential carrier 9 as an accommodating member fixed to the vehicle body, a differential mechanism 3 accommodated in the differential case 2, A clutch mechanism 4 is provided between the differential case 2 and the differential mechanism 3 for transmitting the driving force in an intermittent manner. Lubricating oil (diff oil) for lubricating the differential mechanism 3 is introduced into the differential case 2.

差動機構３は、入力部材としてのピニオンシャフト３０と、デフケース２の回転軸線Ｏ周りに回転可能に支持された複数（４つ）のピニオンギヤ３１と、一対の出力部材としての一対のサイドギヤ３２とを有している。複数のピニオンギヤ３１及び一対のサイドギヤ３２は、傘歯車からなり、ギヤ軸を直交させて互いに噛み合っている。一対のサイドギヤ３２には、左右のドライブシャフトがそれぞれ相対回転不能に連結される。なお、ピニオンギヤ３１及びサイドギヤ３２には、複数のギヤ歯が形成されているが、図２では、これらのギヤ歯の図示を省略している。   The differential mechanism 3 includes a pinion shaft 30 as an input member, a plurality (four) of pinion gears 31 rotatably supported around the rotation axis O of the differential case 2, and a pair of side gears 32 as a pair of output members. have. The plurality of pinion gears 31 and the pair of side gears 32 are bevel gears and mesh with each other with their gear axes orthogonal to each other. The left and right drive shafts are coupled to the pair of side gears 32 so as not to rotate relative to each other. The pinion gear 31 and the side gear 32 have a plurality of gear teeth, but these gear teeth are not shown in FIG.

差動機構３は、ピニオンシャフト３０に入力された駆動力を一対のサイドギヤ３２に差動を許容して配分する。本実施の形態では、差動機構３が一対のピニオンシャフト３０を有し、４つのピニオンギヤ３１のうち２つのピニオンギヤ３１が一方のピニオンシャフト３０に軸支され、他の２つのピニオンギヤ３１が他方のピニオンシャフト３０に軸支されている。   The differential mechanism 3 distributes the driving force input to the pinion shaft 30 while allowing the differential to the pair of side gears 32. In the present embodiment, the differential mechanism 3 has a pair of pinion shafts 30, two of the four pinion gears 31 are pivotally supported by one pinion shaft 30, and the other two pinion gears 31 are the other. The pinion shaft 30 is pivotally supported.

それぞれのピニオンシャフト３０は、図２に示すように、後述するクラッチ機構４の連結部材５に係合する一対の被係合部３０１と、ピニオンギヤ３１に挿通される一対のピニオンギヤ支持部３０２と、一対のピニオンギヤ支持部３０２を連結する連結部３０３とを一体に有し、全体として軸状に形成されている。一対の被係合部３０１は、ピニオンシャフト３０の両端部に設けられ、連結部３０３はピニオンシャフト３０の軸方向の中央部に設けられている。一対のピニオンギヤ支持部３０２は、一対の被係合部３０１のそれぞれと連結部３０３との間に設けられ、ピニオンギヤ３１を軸支する。   As shown in FIG. 2, each pinion shaft 30 includes a pair of engaged portions 301 that are engaged with a connecting member 5 of the clutch mechanism 4 described later, a pair of pinion gear support portions 302 that are inserted through the pinion gear 31, and A connecting portion 303 that connects the pair of pinion gear support portions 302 is integrally formed, and is formed in a shaft shape as a whole. The pair of engaged portions 301 are provided at both ends of the pinion shaft 30, and the connecting portion 303 is provided at the center portion in the axial direction of the pinion shaft 30. The pair of pinion gear support portions 302 is provided between each of the pair of engaged portions 301 and the connecting portion 303 and pivotally supports the pinion gear 31.

一対のピニオンシャフト３０は、その軸方向の中央部において互いに噛み合わされている。具体的には、一方のピニオンシャフト３０における一対のピニオンギヤ支持部３０２の間に形成された凹部３００に他方のピニオンシャフト３０の連結部３０３が嵌合し、かつ他方のピニオンシャフト３０における一対のピニオンギヤ支持部３０２の間に形成された凹部３００に一方のピニオンシャフト３０の連結部３０３が嵌合している。一対のピニオンシャフト３０は、デフケース２の回転軸線Ｏに沿って見た場合に、互いに直交している。なお、デフケース２が本発明の「第１回転部材」に相当し、一対のピニオンシャフト３０が本発明の「第２回転部材」に、それぞれ相当する。   The pair of pinion shafts 30 are meshed with each other at the center in the axial direction. Specifically, the coupling portion 303 of the other pinion shaft 30 is fitted into the recess 300 formed between the pair of pinion gear support portions 302 in the one pinion shaft 30, and the pair of pinion gears in the other pinion shaft 30. The connecting portion 303 of one pinion shaft 30 is fitted in the recess 300 formed between the support portions 302. The pair of pinion shafts 30 are orthogonal to each other when viewed along the rotation axis O of the differential case 2. The differential case 2 corresponds to the “first rotating member” of the present invention, and the pair of pinion shafts 30 corresponds to the “second rotating member” of the present invention.

デフケース２は、円盤状の第１ケース部材２１と、有底円筒状の第２ケース部材２２とを有している。第１ケース部材２１は、第２ケース部材２２の開口を閉塞している。差動機構３における一対のサイドギヤ３２と第１ケース部材２１及び第２ケース部材２２との間には、それぞれ環板状のワッシャ３４が配置されている。   The differential case 2 includes a disk-shaped first case member 21 and a bottomed cylindrical second case member 22. The first case member 21 closes the opening of the second case member 22. Between the pair of side gears 32 and the first case member 21 and the second case member 22 in the differential mechanism 3, annular plate washers 34 are respectively disposed.

第２ケース部材２２は、差動機構３及び連結部材５を内側に収容する円筒部２２１と、円筒部２２１の軸方向一端部から内方に延在する底部２２２と、後述する連結部材５の第１噛み合い部５１に噛み合う第２噛み合い部２２３と、円筒部２２１の軸方向他端部から外方に延在するフランジ部２２４とを一体に有している。円筒部２２１には、潤滑油を流動させる複数の油孔２２１ａが形成されている。ウェーブワッシャ８２は、連結部材５を第２ケース部材２２の底部２２２から離間させる方向に付勢している。   The second case member 22 includes a cylindrical portion 221 that houses the differential mechanism 3 and the connecting member 5 inside, a bottom portion 222 that extends inwardly from one axial end of the cylindrical portion 221, and a connecting member 5 that will be described later. A second meshing portion 223 that meshes with the first meshing portion 51 and a flange portion 224 that extends outward from the other axial end of the cylindrical portion 221 are integrally provided. The cylindrical portion 221 has a plurality of oil holes 221a through which lubricating oil flows. The wave washer 82 urges the connecting member 5 in a direction in which the connecting member 5 is separated from the bottom 222 of the second case member 22.

第１ケース部材２１は、第２ケース部材２２の底部２２２と軸方向に対向する円盤部２１１と、第２ケース部材２２側のフランジ部２２４に突き当てられるフランジ部２１２と、円盤部２１１の軸方向における押圧部材７側の端部から延在して円盤部よりも小径に形成されたボス部２１３とを一体に有している。第１ケース部材２１には、一対のサイドギヤ３２のうち一方のサイドギヤ３２に相対回転不能に連結されるドライブシャフトが挿入されるシャフト挿入孔２１ａが形成されている。   The first case member 21 includes a disc portion 211 that is axially opposed to the bottom portion 222 of the second case member 22, a flange portion 212 that is abutted against the flange portion 224 on the second case member 22 side, and a shaft of the disc portion 211. It integrally has a boss portion 213 extending from the end portion on the pressing member 7 side in the direction and having a smaller diameter than the disk portion. The first case member 21 is formed with a shaft insertion hole 21 a into which a drive shaft connected to one side gear 32 of the pair of side gears 32 so as not to be relatively rotatable is inserted.

第１ケース部材２１のフランジ部２１２と第２ケース部材２２のフランジ部２２４とは、複数のねじ２０によって結合されている。また、円盤部２１１には、第２ケース部材２２の底部２２２との対向面とは反対側の外面から軸方向に窪んで形成された環状溝２１１ｂ、及び環状溝２１１ｂと連通して円盤部２１１を軸方向に貫通する貫通孔２１１ｃが形成されている。   The flange portion 212 of the first case member 21 and the flange portion 224 of the second case member 22 are coupled by a plurality of screws 20. Further, the disk portion 211 communicates with the circular groove 211b formed in the axial direction from the outer surface opposite to the surface facing the bottom portion 222 of the second case member 22, and the circular groove 211b. A through hole 211c penetrating in the axial direction is formed.

ボス部２１３の外周面２１３ａとデフキャリア９の内面９ａとの間には、軸受９１が配置されている。軸受９１は、ボス部２１３の外周面２１３ａに嵌合された内輪９１１と、デフキャリア９の内面９ａに嵌合された外輪９１２と、内輪９１１と外輪９１２との間に転動可能に配置された複数の転動体９１３とを備えている。本実施の形態では、転動体９１３が球状の玉であり、軸受９１が玉軸受として構成されている。複数の転動体９１３は、図略の保持器によって等間隔に保持されている。   A bearing 91 is disposed between the outer peripheral surface 213 a of the boss portion 213 and the inner surface 9 a of the differential carrier 9. The bearing 91 is disposed between the inner ring 911 fitted to the outer peripheral surface 213a of the boss portion 213, the outer ring 912 fitted to the inner surface 9a of the differential carrier 9, and the inner ring 911 and the outer ring 912 so as to be able to roll. And a plurality of rolling elements 913. In the present embodiment, the rolling element 913 is a spherical ball, and the bearing 91 is configured as a ball bearing. The plurality of rolling elements 913 are held at regular intervals by a holder (not shown).

デフケース２には、第１及び第２ケース部材２１，２２のフランジ部２１２，２２４に固定される環状のリングギヤ２３（図１参照）から駆動力が入力される。リングギヤ２３は、第２ケース部材２１の円筒部２２１におけるフランジ部２２４側の外周に固定されている。本実施の形態では、第１ケース部材２１のフランジ部２１２に形成された複数のボルト挿通孔２１２ａ、及び第２ケース部材２２のフランジ部２２４に形成された複数のボルト挿通孔２２４ａにそれぞれ挿通された複数の締結ボルト２４によって、リングギヤ２３がデフケース２と一体に回転するように固定されている。締結ボルト２４は、頭部２４１が第１ケース部材２１のフランジ部２１２に当接し、雄ねじが形成された軸部２４２がボルト挿通孔２１２ａ，２２４ａを挿通してリングギヤ２３のねじ孔２３ａに螺合する。   A driving force is input to the differential case 2 from an annular ring gear 23 (see FIG. 1) fixed to the flange portions 212 and 224 of the first and second case members 21 and 22. The ring gear 23 is fixed to the outer periphery of the cylindrical portion 221 of the second case member 21 on the flange portion 224 side. In the present embodiment, the plurality of bolt insertion holes 212 a formed in the flange portion 212 of the first case member 21 and the plurality of bolt insertion holes 224 a formed in the flange portion 224 of the second case member 22 are respectively inserted. The ring gear 23 is fixed so as to rotate integrally with the differential case 2 by a plurality of fastening bolts 24. The fastening bolt 24 has a head portion 241 that abuts on the flange portion 212 of the first case member 21, and a shaft portion 242 with a male screw formed through the bolt insertion holes 212 a and 224 a and screwed into the screw hole 23 a of the ring gear 23. To do.

クラッチ機構４は、デフケース２の回転軸線Ｏに沿った軸方向移動によってデフケース２と一対のピニオンシャフト３０とを相対回転不能に連結する連結部材５と、連結部材５を軸方向移動させる移動力を発生する移動力発生機構としてのアクチュエータ６と、連結部材５とアクチュエータ６との間に配置された押圧部材７と、押圧部材７と連結部材５との間に介在するワッシャ８１と、連結部材５をアクチュエータ６側に付勢する付勢部材としてのウェーブワッシャ８２とを有して構成されている。   The clutch mechanism 4 has a connecting member 5 that connects the differential case 2 and the pair of pinion shafts 30 so as not to be relatively rotatable by axial movement along the rotation axis O of the differential case 2, and a moving force that moves the connecting member 5 in the axial direction. Actuator 6 as a moving force generation mechanism to be generated, pressing member 7 disposed between connecting member 5 and actuator 6, washer 81 interposed between pressing member 7 and connecting member 5, and connecting member 5 And a wave washer 82 as an urging member that urges the actuator 6 toward the actuator 6 side.

連結部材５は、デフケース２内で差動機構３に対してデフケース２の回転軸線Ｏに沿う中心軸方向に相対移動可能かつ相対回転不能に配置されている。アクチュエータ６は、デフケース２の外側に配置されている。押圧部材７は、アクチュエータ６の移動力を連結部材５に伝達する。連結部材５は、押圧部材７によって中心軸方向に押圧されて移動する。また、デフケース２、一対のピニオンシャフト３０、及びクラッチ機構４が、本発明の「駆動力伝達装置」を構成する。   The connecting member 5 is disposed in the differential case 2 so as to be relatively movable in the central axis direction along the rotational axis O of the differential case 2 with respect to the differential mechanism 3 and not to be relatively rotatable. The actuator 6 is disposed outside the differential case 2. The pressing member 7 transmits the moving force of the actuator 6 to the connecting member 5. The connecting member 5 moves while being pressed in the central axis direction by the pressing member 7. The differential case 2, the pair of pinion shafts 30, and the clutch mechanism 4 constitute the “driving force transmission device” of the present invention.

連結部材５は、その中心軸線がデフケース２の回転軸線Ｏと一致する円筒状であり、差動機構３の一対のピニオンシャフト３０に対して、デフケース２の回転軸線Ｏに沿う中心軸方向に相対移動可能かつ相対回転不能に配置されている。また、連結部材５は、鋼材を鍛造して形成され、中心軸方向の一端部に設けられた複数の噛み合い歯５１ａを有する第１噛み合い部５１、第１噛み合い部５１の内方に突出して設けられた環状の内鍔部５２、及びピニオンシャフト３０が周方向に係合する係合部５３０が形成された円筒部５３を一体に有している。第１噛み合い部５１は、デフケース２に設けられた第２噛み合い部２２３（後述）と周方向に噛み合う。内鍔部５２は、軸方向端面がウェーブワッシャ８２に当接して、ウェーブワッシャ８２の付勢力を受ける。係合部５３０は、円筒部５３の内外周面間を貫通し、連結部材５の中心軸方向に延びる溝として形成されている。   The connecting member 5 has a cylindrical shape whose central axis coincides with the rotational axis O of the differential case 2, and is relative to the pair of pinion shafts 30 of the differential mechanism 3 in the central axial direction along the rotational axis O of the differential case 2. It is arranged so that it can move but cannot rotate relative to it. Further, the connecting member 5 is formed by forging a steel material, and has a first meshing portion 51 having a plurality of meshing teeth 51a provided at one end portion in the central axis direction, and protruding inward of the first meshing portion 51. The annular inner flange portion 52 and the cylindrical portion 53 formed with an engaging portion 530 with which the pinion shaft 30 engages in the circumferential direction are integrally provided. The first meshing portion 51 meshes with a second meshing portion 223 (described later) provided in the differential case 2 in the circumferential direction. The inner flange 52 receives an urging force of the wave washer 82 with the end face in the axial direction coming into contact with the wave washer 82. The engaging portion 530 is formed as a groove that penetrates between the inner and outer peripheral surfaces of the cylindrical portion 53 and extends in the central axis direction of the connecting member 5.

係合部５３０には、ピニオンシャフト３０の両端部に設けられた被係合部３０１が係合する。ピニオンシャフト３０の被係合部３０１が連結部材５の係合部５３０に係合することにより、連結部材５は、ピニオンシャフト３０に対して回転軸線Ｏに沿う中心軸方向に相対移動可能かつ相対回転不能である。複数のピニオンギヤ３１は、デフケース２の回転軸線Ｏ周りに連結部材５と共に回転（公転）可能である。本実施の形態では、一対のピニオンシャフト３０のそれぞれの両端部に設けられた被係合部３０１が連結部材５に係合するため、円筒部５３には４つの係合部５３０が形成されている。   The engaged portions 301 provided at both ends of the pinion shaft 30 are engaged with the engaging portions 530. When the engaged portion 301 of the pinion shaft 30 is engaged with the engaging portion 530 of the connecting member 5, the connecting member 5 is relatively movable and relative to the pinion shaft 30 in the central axis direction along the rotation axis O. Cannot rotate. The plurality of pinion gears 31 can rotate (revolve) together with the connecting member 5 around the rotation axis O of the differential case 2. In the present embodiment, the engaged portions 301 provided at both ends of the pair of pinion shafts 30 are engaged with the connecting member 5, so that four engaging portions 530 are formed in the cylindrical portion 53. Yes.

複数のピニオンギヤ３１の背面３１ａと連結部材５の円筒部５３の内周面５３ａとの間には、ワッシャ３３が配置されている。ワッシャ３３は、ピニオンギヤ３１の背面３１ａに対向する内面３３ａが部分球面状であり、連結部材５の円筒部５３の内周面５３ａに対向する外面３３ｂが平面状である。ピニオンギヤ３１がピニオンシャフト３０を中心として回転（自転）すると、ピニオンギヤ３１の背面３１ａがワッシャ３３の内面３３ａを摺動する。また、連結部材５がピニオンシャフト３０に対して中心軸方向に移動すると、連結部材５の円筒部５３の内周面５３ａがワッシャ３３の外面３３ｂを摺動する。円筒部５３の内周面５３ａは、ワッシャ３３の外面３３ｂを摺動する部分が平面状に形成されている。   A washer 33 is disposed between the back surface 31 a of the plurality of pinion gears 31 and the inner peripheral surface 53 a of the cylindrical portion 53 of the connecting member 5. In the washer 33, the inner surface 33a facing the back surface 31a of the pinion gear 31 has a partial spherical shape, and the outer surface 33b facing the inner peripheral surface 53a of the cylindrical portion 53 of the connecting member 5 has a planar shape. When the pinion gear 31 rotates (rotates) around the pinion shaft 30, the back surface 31 a of the pinion gear 31 slides on the inner surface 33 a of the washer 33. Further, when the connecting member 5 moves in the central axis direction with respect to the pinion shaft 30, the inner peripheral surface 53 a of the cylindrical portion 53 of the connecting member 5 slides on the outer surface 33 b of the washer 33. The inner peripheral surface 53 a of the cylindrical portion 53 has a flat portion that slides on the outer surface 33 b of the washer 33.

押圧部材７は、デフケース２の外部に配置される円環状の基部７１と、基部７１からデフケース２の回転軸線Ｏと平行に延設された複数の突片７２とを有している。本実施の形態では、押圧部材７に４つの突片７２が設けられている。。基部７１は、第１ケース部材２１の環状溝２１１ｂ内に配置される。複数の突片７２は、第１ケース部材２１の貫通孔２１１ｃに挿通されている。押圧部材７は、鋼板をプレス加工して形成され、突片７２の先端部（基部７１側の基端部とは反対側の端部）が内側に屈曲されている。また、突片７２の先端部と連結部材５の円筒部５３との間には、断面Ｌ字状のワッシャ８１が配置されている。ワッシャ８１は、円筒状の筒部８１１と、筒部８１１の軸方向一端部から内方に延在する円盤部８１２とを有し、筒部８１１が連結部材５の円筒部５３に外嵌されている。突片７２の先端部は、ワッシャ８１の円盤部８１２に当接する。   The pressing member 7 includes an annular base 71 disposed outside the differential case 2 and a plurality of projecting pieces 72 extending from the base 71 in parallel with the rotation axis O of the differential case 2. In the present embodiment, four pressing pieces 72 are provided on the pressing member 7. . The base 71 is disposed in the annular groove 211 b of the first case member 21. The plurality of protruding pieces 72 are inserted into the through holes 211 c of the first case member 21. The pressing member 7 is formed by pressing a steel plate, and the distal end portion of the projecting piece 72 (the end portion opposite to the proximal end portion on the base 71 side) is bent inward. Further, a washer 81 having an L-shaped cross section is disposed between the tip end of the projecting piece 72 and the cylindrical portion 53 of the connecting member 5. The washer 81 has a cylindrical tubular portion 811 and a disk portion 812 extending inward from one axial end of the tubular portion 811, and the tubular portion 811 is fitted on the cylindrical portion 53 of the connecting member 5. ing. The tip of the projecting piece 72 comes into contact with the disk portion 812 of the washer 81.

アクチュエータ６は、コイル巻線６１１、及びコイル巻線６１１をモールドするモールド樹脂部６１２を有する環状の電磁石６１と、コイル巻線６１１への通電によって発生する電磁石６１の磁束の磁路となるヨーク６２と、ヨーク６２に対して軸方向移動し、移動力を出力する移動部材としてのアーマチャ６３と、電磁石６１及びヨーク６２をデフキャリア９に対して回り止めする回り止め部材６４と、デフケース２の第１ケース部材２１に対するヨーク６２の軸方向移動を規制する規制部材６５とを有している。アクチュエータ６の電磁石６１、ヨーク６２、及びアーマチャ６３のそれぞれの一部は、第１ケース部材２１の環状溝２１１ｂに収容されている。ヨーク６２及び規制部材６５は、例えば鉄等の軟磁性体からなる。回り止め部材６４は、例えばオーステナイト系ステンレス等の非磁性体からなる。   The actuator 6 includes a coil winding 611 and an annular electromagnet 61 having a mold resin portion 612 for molding the coil winding 611, and a yoke 62 serving as a magnetic path of the magnetic flux of the electromagnet 61 generated by energization of the coil winding 611. An armature 63 as a moving member that moves in the axial direction with respect to the yoke 62 and outputs a moving force, a detent member 64 that prevents the electromagnet 61 and the yoke 62 from rotating with respect to the differential carrier 9, and the first of the differential case 2. A restricting member 65 that restricts the axial movement of the yoke 62 relative to the one case member 21 is provided. A part of each of the electromagnet 61, the yoke 62, and the armature 63 of the actuator 6 is accommodated in the annular groove 211 b of the first case member 21. The yoke 62 and the regulating member 65 are made of a soft magnetic material such as iron. The anti-rotation member 64 is made of a nonmagnetic material such as austenitic stainless steel.

電磁石６１及びヨーク６２は、後述するデフケース２の第１ケース部材２１の外周側に配置されている。モールド樹脂部６１２は、回転軸線Ｏに沿う断面の形状が矩形状である。アーマチャ６３は、コイル巻線６１１への通電により発生する磁力によって、デフケース２の第２噛み合い部２２３に第１噛み合い部５１が噛み合う方向に連結部材５を移動させる。連結部材５は、押圧部材７を介して伝達されるアクチュエータ６の移動力によって、第１噛み合い部５１が第２噛み合い部２２３に噛み合わされる。   The electromagnet 61 and the yoke 62 are disposed on the outer peripheral side of the first case member 21 of the differential case 2 described later. The mold resin portion 612 has a rectangular cross-sectional shape along the rotation axis O. The armature 63 moves the connecting member 5 in the direction in which the first engagement portion 51 is engaged with the second engagement portion 223 of the differential case 2 by a magnetic force generated by energization of the coil winding 611. In the connecting member 5, the first engaging portion 51 is engaged with the second engaging portion 223 by the moving force of the actuator 6 transmitted through the pressing member 7.

電磁石６１のコイル巻線６１１には、モールド樹脂部６１２に設けられたボス部６１２ｂから導出された電線６１３を介して図略の制御装置から励磁電流が供給される。規制部材６５及び回り止め部材６４には、ボス部６１２ｂが嵌合する切り欠き６５ａ，６４１ｂが形成されている。   Excitation current is supplied to the coil winding 611 of the electromagnet 61 from a control device (not shown) via an electric wire 613 led out from a boss portion 612b provided in the mold resin portion 612. The restriction member 65 and the rotation prevention member 64 are formed with notches 65a and 641b into which the boss portion 612b is fitted.

アクチュエータ６は、コイル巻線６１１に励磁電流が供給されることにより作動する。ヨーク６２は、低炭素鋼等の軟磁性金属からなり、モールド樹脂部６１２の内周面を内側から覆う円筒部６２１と、円筒部６２１の軸方向の一端部から外方に突出してモールド樹脂部６１２の一方の軸方向端面を覆う鍔部６２２とを一体に有している。ヨーク６２の円筒部６２１の内径は、この円筒部６２１の内周面に対向するデフケース２における第１ケース部材２１の円盤部２１１の外径よりも僅かに大きく形成されている。   The actuator 6 operates when an exciting current is supplied to the coil winding 611. The yoke 62 is made of a soft magnetic metal such as low carbon steel and has a cylindrical portion 621 that covers the inner peripheral surface of the mold resin portion 612 from the inside, and a mold resin portion that protrudes outward from one axial end portion of the cylindrical portion 621. It has integrally the collar part 622 which covers one axial direction end surface of 612. As shown in FIG. The inner diameter of the cylindrical portion 621 of the yoke 62 is slightly larger than the outer diameter of the disk portion 211 of the first case member 21 in the differential case 2 facing the inner peripheral surface of the cylindrical portion 621.

アーマチャ６３は、低炭素鋼等の軟磁性金属からなり、電磁石６１の外周に配置される環状の外環部６３１と、外環部６３１の軸方向の一端部から内方に突出して環状に形成された円環部６３２と、外環部６３１の軸方向の他端部から外方に突出して形成されたフランジ部６３３とを一体に有している。外環部６３１は、電磁石６１を外周側から覆う円筒状である。円環部６３２は、規制部材６５と軸方向に対向している。フランジ部６３３には、押圧部材７の基部７１が当接している。   The armature 63 is made of a soft magnetic metal such as low carbon steel, and has an annular outer ring portion 631 disposed on the outer periphery of the electromagnet 61 and an annular shape that protrudes inward from one axial end portion of the outer ring portion 631. The annular portion 632 thus formed and the flange portion 633 formed so as to protrude outward from the other axial end of the outer ring portion 631 are integrally provided. The outer ring portion 631 has a cylindrical shape that covers the electromagnet 61 from the outer peripheral side. The annular portion 632 faces the regulating member 65 in the axial direction. The base portion 71 of the pressing member 7 is in contact with the flange portion 633.

アーマチャ６３は、外環部６３１の内周面６３１ａがモールド樹脂部６１２の外周面６１２ａに接触して電磁石６１に支持されている。アーマチャ６３が軸方向に移動する際には、外環部６３１の内周面６３１ａがモールド樹脂部６１２の外周面６１２ａを摺動する。   The armature 63 is supported by the electromagnet 61 with the inner peripheral surface 631 a of the outer ring portion 631 in contact with the outer peripheral surface 612 a of the mold resin portion 612. When the armature 63 moves in the axial direction, the inner peripheral surface 631a of the outer ring portion 631 slides on the outer peripheral surface 612a of the mold resin portion 612.

アーマチャ６３の円環部６３２には、回り止め部材６４の一対の突起部６４２をそれぞれ挿通させる２つの挿通孔６３２ａ、電磁石６１のボス部６１２ｂが貫通する貫通孔６３２ｂ、及び潤滑油を流動させる複数（図２に示す例では１０個）の油孔６３２ｃが形成されている。   In the annular portion 632 of the armature 63, two insertion holes 632a through which the pair of protrusions 642 of the anti-rotation member 64 are inserted, a through hole 632b through which the boss portion 612b of the electromagnet 61 passes, and a plurality of lubricants flow. Oil holes 632c (10 in the example shown in FIG. 2) are formed.

回り止め部材６４は、ヨーク６２の円筒部６２１における鍔部６２２とは反対側の端部に配置されている。回り止め部材６４は、オーステナイト系ステンレス等の非磁性金属からなり、ヨーク６２の円筒部６２１の外周に配置される環状部６４１と、周方向の２箇所において環状部６４１から軸方向に突出する一対の突起部６４２とを一体に有している。環状部６４１は、突起部６４２の突出方向側を指向する軸方向の端面６４１ａ（図３参照）が規制部材６５と接触している。   The anti-rotation member 64 is disposed at the end of the cylindrical portion 621 of the yoke 62 opposite to the flange portion 622. The anti-rotation member 64 is made of a non-magnetic metal such as austenitic stainless steel, and an annular portion 641 disposed on the outer periphery of the cylindrical portion 621 of the yoke 62 and a pair protruding in the axial direction from the annular portion 641 at two locations in the circumferential direction. The protrusion 642 is integrally formed. The annular portion 641 is in contact with the regulating member 65 at an axial end surface 641 a (see FIG. 3) that faces the protruding direction side of the protruding portion 642.

回り止め部材６４は、一対の突起部６４２がデフキャリア９に形成された凹部９０に係合してヨーク６２を回り止めしている。また、一対の突起部６４２は、アーマチャ６３に形成された軸方向の挿通孔６３２ａを挿通することで、ヨーク６２及びデフキャリア９に対してアーマチャ６３を回り止めしている。それぞれの突起部６４２は、アーマチャ６３の挿通孔６３２ａに挿通された平板状の板部６４２ａと、挿通孔６３２ａよりもデフキャリア９の凹部９０側に配置されてヨーク６２に対するアーマチャ６３の軸方向移動を規制する係止突起６４２ｂとを有している。本実施の形態では、係止突起６４２ｂが、板部６４２ａの一部を切り起こすことにより形成されている。   The anti-rotation member 64 prevents the yoke 62 from rotating by a pair of protrusions 642 engaging with a recess 90 formed in the differential carrier 9. The pair of protrusions 642 prevent the armature 63 from rotating with respect to the yoke 62 and the differential carrier 9 by passing through the axial insertion holes 632 a formed in the armature 63. Each of the protrusions 642 is arranged on the flat plate portion 642a inserted through the insertion hole 632a of the armature 63, and on the recess 90 side of the differential carrier 9 with respect to the insertion hole 632a, so that the armature 63 moves in the axial direction relative to the yoke 62. And a locking projection 642b for restricting. In the present embodiment, the locking protrusion 642b is formed by raising a part of the plate portion 642a.

規制部材６５は、低炭素鋼等の軟磁性金属からなり、回り止め部材６４とアーマチャ６３の円環部６３２との間に配置されている。また、規制部材６５は、円環板状の平板部６５１と、平板部６５１の径方向内側の端部から軸方向のアーマチャ６３側に延在して形成された円筒部６５２とを一体に有している。   The restricting member 65 is made of a soft magnetic metal such as low carbon steel, and is disposed between the rotation preventing member 64 and the annular portion 632 of the armature 63. The restricting member 65 has an annular plate-shaped flat plate portion 651 and a cylindrical portion 652 formed so as to extend from the radially inner end of the flat plate portion 651 toward the armature 63 in the axial direction. doing.

平板部６５１は、アーマチャ６３の円環部６３２と軸方向に対向する対向面６５１ｂを有している。平板部６５１の対向面６５１ｂとは反対側の端面６５１ａは、回り止め部材６４の端面６４１ａ及びヨーク６２における円筒部６２１の軸方向端面６２１ａと接触する。この端面６５１ａは、内径側の一部がヨーク６２と接触する接触面として形成され、規制部材６５は、端面６５１ａとアーマチャ６３の円環部６３２との対向面６５１ｂとの間で磁路Ｇを形成して磁束を通過させる（後述する図４（ｂ）参照）。   The flat plate portion 651 has a facing surface 651b that faces the annular portion 632 of the armature 63 in the axial direction. An end surface 651 a opposite to the facing surface 651 b of the flat plate portion 651 contacts the end surface 641 a of the rotation preventing member 64 and the axial end surface 621 a of the cylindrical portion 621 of the yoke 62. The end surface 651a is formed as a contact surface in which a part on the inner diameter side comes into contact with the yoke 62, and the restricting member 65 forms a magnetic path G between the end surface 651a and the facing surface 651b of the annular portion 632 of the armature 63. The magnetic flux is formed to pass (see FIG. 4B described later).

また、平板部６５１は、デフケース２の径方向の幅がデフケース２の回転軸線Ｏに沿った軸方向の厚みよりも広く形成されている。この形状により、規制部材６５における軸方向の寸法を抑えつつ、アーマチャ６３と軸方向に対向する対向面積を十分に確保することができるため、アーマチャ６３の吸引力の向上に寄与する。また、平板部６５１の外径は、ヨーク６２の円筒部６２１外径よりは大きく、回り止め部材６４の環状部６４１の外径よりは小さい。   The flat plate portion 651 is formed so that the radial width of the differential case 2 is wider than the axial thickness along the rotation axis O of the differential case 2. With this shape, it is possible to secure a sufficient facing area facing the armature 63 in the axial direction while suppressing the dimension in the axial direction of the regulating member 65, which contributes to an improvement in the suction force of the armature 63. Further, the outer diameter of the flat plate portion 651 is larger than the outer diameter of the cylindrical portion 621 of the yoke 62 and smaller than the outer diameter of the annular portion 641 of the rotation preventing member 64.

規制部材６５の円筒部６５２は、その内周面６５２ａが第１ケース部材２１における円盤部２１１の外周面２１１ｄと向かい合い、デフケース２の第１ケース部材２１に対して軸方向移動可能に嵌め合わされる。円筒部６５２の外周面６５２ｂは、アーマチャ６３の円環部６３２の内周面６３２ｄと隙間を介して対向している。デフケース２に対する規制部材６５の軸方向一側への移動は、円筒部６５２における平板部６５１とは反対側の端部における軸方向端面６５２ｃが軸受９１の外輪９１１に当接することにより規制される。   The cylindrical portion 652 of the restricting member 65 is fitted so that its inner peripheral surface 652a faces the outer peripheral surface 211d of the disk portion 211 in the first case member 21 so as to be axially movable with respect to the first case member 21 of the differential case 2. . The outer peripheral surface 652b of the cylindrical portion 652 faces the inner peripheral surface 632d of the annular portion 632 of the armature 63 via a gap. The movement of the regulating member 65 relative to the differential case 2 in the axial direction is restricted by the axial end surface 652c at the end of the cylindrical portion 652 opposite to the flat plate portion 651 coming into contact with the outer ring 911 of the bearing 91.

本実施の形態では、例えばコイル巻線６１１への通電により発生する磁力によって、電磁石６１及び回り止め部材６４がヨーク６２と共にアーマチャ６３の円環部６３２側に移動したとき、規制部材６５の平板部６５１の端面６５１ａが回り止め部材６４の端面６４１ａ及びヨーク６２の軸方向端面６２１ａに接触すると共に、円筒部６５２における平板部６５１とは反対側の端部における軸方向端面６５２ｃが軸受９１の外輪９１１の側面に当接する。これにより、電磁石６１、ヨーク６２、及び回り止め部材６４の第１ケース部材２１に対する軸方向移動が規制される。   In the present embodiment, for example, when the electromagnet 61 and the rotation preventing member 64 move together with the yoke 62 to the annular portion 632 side of the armature 63 by the magnetic force generated by energizing the coil winding 611, the flat plate portion of the regulating member 65 The end surface 651a of the shaft 651 contacts the end surface 641a of the anti-rotation member 64 and the axial end surface 621a of the yoke 62, and the axial end surface 652c at the end of the cylindrical portion 652 opposite to the flat plate portion 651 is the outer ring 911 of the bearing 91. Abuts the side of Thereby, the axial movement of the electromagnet 61, the yoke 62, and the rotation preventing member 64 with respect to the first case member 21 is restricted.

なお、規制部材６５の円筒部６５２は、例えば圧入又は溶接によってヨーク６２における円筒部６２１の軸方向端面６２１ａに固定されていてもよい。この場合、規制部材５は、円筒部６５２の軸方向端面６５２ｃが軸受９１の外輪９１１に当接しなくともよい。   The cylindrical portion 652 of the restricting member 65 may be fixed to the axial end surface 621a of the cylindrical portion 621 of the yoke 62 by, for example, press fitting or welding. In this case, the regulating member 5 does not have to contact the outer ring 911 of the bearing 91 with the axial end surface 652c of the cylindrical portion 652.

（差動装置の動作）
次に、差動装置１の動作について図４を参照して説明する。差動装置１は、アクチュエータ６の作動及び非作動によって、第１噛み合い部５１と第２噛み合い部２２３とが周方向に噛み合って連結部材５とデフケース２とが相対回転不能に連結される連結状態と、連結部材５とデフケース２とが相対回転可能な非連結状態とが切り替わる。 (Differential operation)
Next, the operation of the differential device 1 will be described with reference to FIG. The differential device 1 is in a connected state in which the first engagement portion 51 and the second engagement portion 223 are engaged in the circumferential direction by the operation and non-operation of the actuator 6 so that the connection member 5 and the differential case 2 are connected so as not to be relatively rotatable. Then, the connecting member 5 and the differential case 2 are switched to a non-connected state in which the relative rotation is possible.

図４（ａ）は、アクチュエータ６の非作動時における差動装置１を示す部分断面図である。図４（ｂ）は、アクチュエータ６の作動時における差動装置１を示す部分断面図である。   FIG. 4A is a partial cross-sectional view showing the differential device 1 when the actuator 6 is not operated. FIG. 4B is a partial cross-sectional view showing the differential device 1 when the actuator 6 is operated.

電磁石６１のコイル巻線６１１に励磁電流が供給されないアクチュエータ６の非作動時には、ウェーブワッシャ８２の復元力によって連結部材５が第１ケース部材２１の円盤部２１１側に移動して、第１噛み合い部５１と第２噛み合い部２２３との噛み合いが解除される。また、アーマチャ６３は、電磁石６１の非通電時において、連結部材５、ワッシャ８１、及び押圧部材７を介して伝達されるウェーブワッシャ８２の復元力により、底部２２２から離間した初期位置に戻される。   When the exciting current is not supplied to the coil winding 611 of the electromagnet 61, the connecting member 5 is moved to the disk portion 211 side of the first case member 21 by the restoring force of the wave washer 82 when the actuator 6 is not operated. The meshing between 51 and the second meshing part 223 is released. Further, the armature 63 is returned to the initial position separated from the bottom portion 222 by the restoring force of the wave washer 82 transmitted through the connecting member 5, the washer 81, and the pressing member 7 when the electromagnet 61 is not energized.

このアクチュエータ６の非作動時には、デフケース２と連結部材５が相対回転可能であるので、デフケース２から差動機構３への駆動力の伝達が遮断される。これにより、リングギヤ２３からデフケース２に入力された駆動力がドライブシャフトに伝達されず、車両が二輪駆動状態となる。   When the actuator 6 is not in operation, the differential case 2 and the connecting member 5 can be rotated relative to each other, so that transmission of driving force from the differential case 2 to the differential mechanism 3 is interrupted. As a result, the driving force input from the ring gear 23 to the differential case 2 is not transmitted to the drive shaft, and the vehicle enters a two-wheel drive state.

一方、電磁石６１のコイル巻線６１１に励磁電流が供給されると、図４（ｂ）に示すように、ヨーク６２、アーマチャ６３、回り止め部材６４、及び規制部材６５を磁束が通過する磁路Ｇが形成される。この磁路Ｇにおける磁束の経路は、主として、ヨーク６２の鍔部６２２→ヨーク６２の円筒部６２１→規制部材６５→アーマチャ６３の円環部６３２→アーマチャ６３の外環部６３１→ヨーク６２となる。このように、本実施の形態では、磁路Ｇを通過する磁束の一部を規制部材６５の平板部６５１とアーマチャ６３の円環部６３２との間の空間を通過させることにより、アーマチャ６３に対する吸引力の向上が図られている。   On the other hand, when an exciting current is supplied to the coil winding 611 of the electromagnet 61, as shown in FIG. 4B, the magnetic path through which the magnetic flux passes through the yoke 62, the armature 63, the anti-rotation member 64, and the regulating member 65. G is formed. The path of the magnetic flux in the magnetic path G is mainly the flange portion 622 of the yoke 62 → the cylindrical portion 621 of the yoke 62 → the restriction member 65 → the annular portion 632 of the armature 63 → the outer annular portion 631 of the armature 63 → the yoke 62. . Thus, in the present embodiment, by passing a part of the magnetic flux passing through the magnetic path G through the space between the flat plate portion 651 of the restricting member 65 and the annular portion 632 of the armature 63, the armature 63 is protected. The improvement of the suction force is achieved.

そして上記した磁路Ｇが形成されると、電磁石６１の磁力によって、アーマチャ６３の円環部６３２がヨーク６２における円筒部６２１の軸方向端面６２１ａに接近するように、アーマチャ６３が軸方向に移動する。これにより、押圧部材７が連結部材５を第２ケース部材２２の底部２２２側に押圧し、第１噛み合い部５１と第２噛み合い部２２３とが噛み合わされる。具体的には、押圧部材７が基部７１からアーマチャ６３の移動力を受け、この移動力によって連結部材５を第２ケース部材２２の底部２２２側に押圧する。アーマチャ６３の位置は、デフキャリア９に固定されたポジションセンサ９３（図２参照）によって検出される。   When the magnetic path G is formed, the armature 63 moves in the axial direction so that the annular portion 632 of the armature 63 approaches the axial end surface 621a of the cylindrical portion 621 of the yoke 62 by the magnetic force of the electromagnet 61. To do. As a result, the pressing member 7 presses the connecting member 5 toward the bottom 222 of the second case member 22, and the first meshing portion 51 and the second meshing portion 223 are meshed with each other. Specifically, the pressing member 7 receives the moving force of the armature 63 from the base 71, and presses the connecting member 5 toward the bottom 222 of the second case member 22 by this moving force. The position of the armature 63 is detected by a position sensor 93 (see FIG. 2) fixed to the differential carrier 9.

第１噛み合い部５１と第２噛み合い部２２３とが噛み合うと、リングギヤ２３からデフケース２の第２ケース部材２２に入力された駆動力が、連結部材５、差動機構３の一対のピニオンシャフト３０、４つのピニオンギヤ３１、及び一対のサイドギヤ３２を介してドライブシャフトに伝達され、車両が四輪駆動状態となる。   When the first meshing portion 51 and the second meshing portion 223 mesh with each other, the driving force input from the ring gear 23 to the second case member 22 of the differential case 2 is coupled to the coupling member 5 and the pair of pinion shafts 30 of the differential mechanism 3. The vehicle is transmitted to the drive shaft via the four pinion gears 31 and the pair of side gears 32, and the vehicle is in a four-wheel drive state.

制御装置は、アクチュエータ６を非作動状態から作動状態にする際、連結部材５を速やかに移動させることが可能な大きな電流値の励磁電流を電磁石６１に供給し、その後、第１噛み合い部５１と第２噛み合い部２２３とが噛み合ったと判定されると、励磁電流の電流値を、第１噛み合い部５１と第２噛み合い部２２３との噛み合い状態を維持することができる程度の比較的小さな電流値に低減する。これにより、消費電力の低減を図ることができる。   When the control device changes the actuator 6 from the non-operating state to the operating state, the control device supplies an exciting current having a large current value that can quickly move the connecting member 5 to the electromagnet 61. When it is determined that the second meshing portion 223 is meshed, the current value of the excitation current is set to a relatively small current value that can maintain the meshing state between the first meshing portion 51 and the second meshing portion 223. To reduce. Thereby, power consumption can be reduced.

（第１の実施の形態の作用及び効果）
以上説明した第１の実施の形態によれば、アクチュエータ６が電磁石６１及びヨーク６２のデフケース２に対する軸方向移動を規制する軟磁性体からなる規制部材６５を有し、アーマチャ６３が規制部材６５との間の空間を通過する磁束によってヨークに６２に対して軸方向移動する。これにより、例えば、規制部材６５が非磁性体である場合に比較して、磁路Ｇにおける磁路面積を拡大できるのでアーマチャ６３に対する吸引力を増大することができる。つまり、本実施の形態では、電磁石６１及びヨーク６２の軸方向移動を規制する規制部材６５を磁路Ｇにおける磁気回路に含めることにより、効率的に吸引力の向上を図ることができている。 (Operation and effect of the first embodiment)
According to the first embodiment described above, the actuator 6 includes the restricting member 65 made of a soft magnetic material that restricts the axial movement of the electromagnet 61 and the yoke 62 with respect to the differential case 2, and the armature 63 includes the restricting member 65 and the armature 63. The yoke moves axially with respect to 62 by the magnetic flux passing through the space between. Accordingly, for example, the magnetic path area in the magnetic path G can be increased compared with the case where the regulating member 65 is a non-magnetic material, and therefore the attractive force with respect to the armature 63 can be increased. That is, in the present embodiment, by including the restricting member 65 that restricts the axial movement of the electromagnet 61 and the yoke 62 in the magnetic circuit in the magnetic path G, the attractive force can be improved efficiently.

またさらに、本実施の形態によれば、規制部材６５がヨーク６２と接触する接触面としての端面６５１ａとアーマチャ６３における円環部６３２の対向面６５１ｂとの間で磁束を通過させるので、例えば規制部材６５がヨーク６２との間に隙間や他の非磁性部材を介して配置されている場合に比較して、磁気抵抗を低減することができる。   Furthermore, according to the present embodiment, since the regulating member 65 allows the magnetic flux to pass between the end surface 651a as a contact surface that contacts the yoke 62 and the facing surface 651b of the annular portion 632 in the armature 63, for example, regulation Compared to the case where the member 65 is disposed between the yoke 62 and a gap or another nonmagnetic member, the magnetic resistance can be reduced.

また、本実施の形態では、規制部材６５の平板部６５１がデフケース２の径方向の幅がデフケース２の回転軸線Ｏに沿った軸方向の厚みよりも広く形成されている。これにより、アーマチャ６３を吸引する吸引面としての対向面６５１ｂの面積を十分に確保することができて、アーマチャ６３の吸引力を向上させることができる。   In the present embodiment, the flat plate portion 651 of the restricting member 65 is formed so that the radial width of the differential case 2 is wider than the axial thickness along the rotational axis O of the differential case 2. Thereby, the area of the opposing surface 651b as a suction surface for sucking the armature 63 can be sufficiently secured, and the suction force of the armature 63 can be improved.

［変形例］
次に、本発明の変形例に係る差動装置について、図５を参照して説明する。変形例に係る差動装置は、ヨーク６２の構成が第１の実施の形態と異なる他は、第１の実施の形態に係る差動装置１と同様に構成されているので、この違いの部分について説明する。また、図５において、第１の実施の形態と機能が共通する構成部材については、同一の符号を付して重複した説明を省略する。 [Modification]
Next, a differential device according to a modification of the present invention will be described with reference to FIG. The differential device according to the modification is configured in the same manner as the differential device 1 according to the first embodiment except that the configuration of the yoke 62 is different from that of the first embodiment. Will be described. In FIG. 5, components having the same functions as those of the first embodiment are denoted by the same reference numerals and redundant description is omitted.

図５は、変形例に係る差動装置のアクチュエータ６における電磁石６１及びヨーク６２とその周辺部を拡大した部分断面図である。   FIG. 5 is an enlarged partial cross-sectional view of the electromagnet 61 and the yoke 62 and the periphery thereof in the actuator 6 of the differential gear according to the modification.

変形例に係るヨーク６２は、軸方向のアーマチャ６３側に開口した断面Ｕ字状であり、モールド樹脂部６１２の内周面を内側から覆う円筒部６２１と、モールド樹脂部６１２の外周面を外側から覆う外側筒部６２３と、円筒部６２１と外側筒部６３３との間の鍔部６２２とを一体に有している。鍔部６２２は、円筒部６２１及び外側筒部６２３の軸方向のそれぞれの一端部を連結して、モールド樹脂部６１２の一方の軸方向端面を覆っている。   The yoke 62 according to the modified example has a U-shaped cross section that opens toward the armature 63 in the axial direction, and the cylindrical portion 621 that covers the inner peripheral surface of the mold resin portion 612 from the inside, and the outer peripheral surface of the mold resin portion 612 outside. And an outer cylindrical portion 623 that covers the outer cylindrical portion and a flange portion 622 between the cylindrical portion 621 and the outer cylindrical portion 633. The flange portion 622 connects one end portions of the cylindrical portion 621 and the outer cylindrical portion 623 in the axial direction and covers one axial end surface of the mold resin portion 612.

ヨーク６２の外側筒部６２３の外径は、この外側筒部６２３の外周面６２３ａが対向するアーマチャ６３の外環部６３１の内径よりも僅かに小さく形成されている。アーマチャ６３は、外環部６３１の内周面６３１ａが外側筒部６２３の外周面６２３ａに接触してヨーク６２に支持されている。   The outer diameter of the outer cylinder part 623 of the yoke 62 is formed to be slightly smaller than the inner diameter of the outer ring part 631 of the armature 63 opposed to the outer peripheral surface 623a of the outer cylinder part 623. The armature 63 is supported by the yoke 62 with the inner peripheral surface 631 a of the outer ring portion 631 contacting the outer peripheral surface 623 a of the outer cylindrical portion 623.

本変形例によっても、第１の実施の形態と同様の作用及び効果を得ることができる。   Also according to this modified example, the same operation and effect as the first embodiment can be obtained.

［第２の実施の形態］
次に、本発明の第２の実施の形態に係る差動装置について、図６を参照して説明する。本実施の形態に係る差動装置は、規制部材６５の構成が第１の実施の形態と異なる他は、第１の実施の形態に係る差動装置１と同様に構成されているので、この違いの部分について説明する。また、図６において、第１の実施の形態と機能が共通する構成部材については、同一の符号を付して重複した説明を省略する。 [Second Embodiment]
Next, a differential device according to a second embodiment of the present invention will be described with reference to FIG. The differential device according to the present embodiment is configured in the same manner as the differential device 1 according to the first embodiment, except that the configuration of the regulating member 65 is different from that of the first embodiment. The difference will be described. In FIG. 6, components having the same functions as those of the first embodiment are denoted by the same reference numerals and redundant description is omitted.

図６は、本実施の形態に係る差動機構のアクチュエータ６における電磁石６１及びヨーク６２並びにその周辺部を拡大した断面図である。   FIG. 6 is an enlarged cross-sectional view of the electromagnet 61, the yoke 62, and the periphery thereof in the actuator 6 of the differential mechanism according to the present embodiment.

本実施の形態に係る規制部材６５Ａは、円環状の部材である。つまり、第１の実施の形態に係る規制部材６５は、周方向に沿って見た断面がＬ字型であったのに対して、本実施の形態では、規制部材６５Ａの周方向に沿って見た断面がＩ型である点で第１の実施の形態に係る規制部材６５と異なる。   The restricting member 65A according to the present embodiment is an annular member. That is, the restriction member 65 according to the first embodiment has an L-shaped cross section viewed along the circumferential direction, whereas in the present embodiment, along the circumferential direction of the restriction member 65A. It differs from the regulating member 65 according to the first embodiment in that the cross section seen is I-shaped.

規制部材６５Ａは、アーマチャ６３の円環部６３２と対向する対向面６５０ｂを有し、この対向面６５０ｂと反対側における軸方向の端面６５０ｃの内径側の一部が回り止め部材６４と接触する。また、規制部材６５Ａの内周面６５０ａは、第１ケース部材２１の円盤部２１１の外周面２１１ｄに溶接等によって固定されている。これにより、電磁石６１及びヨーク６２の第１ケース部材２１に対する軸方向移動が規制されている。   The restricting member 65 </ b> A has a facing surface 650 b that faces the annular portion 632 of the armature 63, and a part on the inner diameter side of the axial end surface 650 c on the side opposite to the facing surface 650 b comes into contact with the rotation preventing member 64. Further, the inner peripheral surface 650a of the restricting member 65A is fixed to the outer peripheral surface 211d of the disk portion 211 of the first case member 21 by welding or the like. Thereby, the axial movement of the electromagnet 61 and the yoke 62 with respect to the first case member 21 is restricted.

規制部材６５Ａの端面６５０ｃは、ヨーク６２と接触する接触面として形成され、端面６５０ｃとアーマチャ６３の円環部６３２との対向面６５０ｂとの間で磁路Ｇを形成して磁束を通過させる。このように、本実施の形態では、磁路Ｇを通過する磁束を規制部材６５Ａとアーマチャ６３の円環部６３２との間の空間を通過させることにより、アーマチャ６３に対する吸引力の向上が図られている。本実施の形態によっても、第１の実施の形態と同様の作用及び効果を得ることができる。   The end surface 650c of the regulating member 65A is formed as a contact surface that comes into contact with the yoke 62, and forms a magnetic path G between the end surface 650c and the facing surface 650b of the annular portion 632 of the armature 63 to allow magnetic flux to pass therethrough. As described above, in the present embodiment, the magnetic flux passing through the magnetic path G is allowed to pass through the space between the restricting member 65A and the annular portion 632 of the armature 63, thereby improving the attractive force with respect to the armature 63. ing. Also according to the present embodiment, the same operation and effect as the first embodiment can be obtained.

［第３の実施の形態］
次に、本発明の第３の実施の形態に係る差動装置について、図７を参照して説明する。本実施の形態に係る差動装置は、規制部材及びアーマチャの構成が第１の実施の形態と異なる他は、第１の実施の形態に係る差動装置１と同様に構成されているので、この違いの部分について説明する。また、図７において、第１の実施の形態と機能が共通する構成部材については、同一の符号を付して重複した説明を省略する。 [Third Embodiment]
Next, a differential device according to a third embodiment of the present invention will be described with reference to FIG. The differential device according to the present embodiment is configured in the same manner as the differential device 1 according to the first embodiment, except that the configuration of the regulating member and the armature is different from that of the first embodiment. This difference will be described. In FIG. 7, components having the same functions as those of the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

図７（ａ）は、本実施の形態に係る差動機構のアクチュエータ６における電磁石６１及びヨーク６２並びにその周辺部を拡大した断面図であり、図７（ｂ）は、（ａ）に示す規制部材６６及びその周辺部の拡大図である。   FIG. 7A is an enlarged cross-sectional view of the electromagnet 61, the yoke 62, and the peripheral portion thereof in the actuator 6 of the differential mechanism according to the present embodiment, and FIG. 7B is a regulation shown in FIG. It is an enlarged view of member 66 and its peripheral part.

本実施の形態に係るアーマチャ６３Ａは、電磁石６１の外周に配置される円筒状の外環部６３１と、外環部６３１の軸方向の一端部から内方に突出する円環部６３２と、外環部６３１の軸方向の他端部から外方に突出して形成されたフランジ部６３３とを一体に有しているが、円環部６３２は、外環部６３１に対して垂直な円板部６３４と、円板部６３４の内側で軸方向に対して傾斜したテーパ状のテーパ部６３５とからなる。テーパ部６３５は、径方向の内側に向かうほど回り止め部材６４の環状部６４１との距離が近づくように傾斜している。   The armature 63A according to the present embodiment includes a cylindrical outer ring portion 631 disposed on the outer periphery of the electromagnet 61, an annular portion 632 protruding inward from one axial end portion of the outer ring portion 631, and an outer portion The ring portion 632 is integrally formed with a flange portion 633 formed to protrude outward from the other end portion in the axial direction of the ring portion 631, but the ring portion 632 is a disc portion perpendicular to the outer ring portion 631. 634 and a tapered portion 635 having a tapered shape inclined with respect to the axial direction inside the disc portion 634. The taper portion 635 is inclined so that the distance from the annular portion 641 of the detent member 64 becomes closer toward the inner side in the radial direction.

本実施の形態に係る規制部材６６は、軸方向に対して垂直な円環板状の平板部６６１と、平板部６６１の径方向内側の端部から軸方向のアーマチャ６３側に延在して形成された円筒部６６２と、平板部６６１の円筒部６６２とは反対側の端部から軸方向に傾斜して延在するテーパ部６６３とを一体に有している。   The regulating member 66 according to the present embodiment extends from the annular plate-shaped flat plate portion 661 perpendicular to the axial direction and the radially inner end of the flat plate portion 661 toward the axial armature 63 side. The formed cylindrical portion 662 and a tapered portion 663 extending in an axially inclined manner from an end of the flat plate portion 661 opposite to the cylindrical portion 662 are integrally provided.

規制部材６６のテーパ部６６１において、アーマチャ６３Ａのテーパ部６３４とは反対側を指向する端面６６１ａは、回り止め部材６４の環状部６４１の端面６４１ａに対向し、ヨーク６２における円筒部６２１の軸方向端面６２１ａと接触する。この端面６６１ａは、ヨーク６２と接触する接触面として形成されている。   In the tapered portion 661 of the restricting member 66, an end surface 661 a that faces the opposite side of the tapered portion 634 of the armature 63 A faces the end surface 641 a of the annular portion 641 of the rotation preventing member 64, and the axial direction of the cylindrical portion 621 in the yoke 62 It contacts the end surface 621a. The end surface 661 a is formed as a contact surface that contacts the yoke 62.

規制部材６６は、円筒部６６２の外周面６６２ａが規制部材６６の円環部６３２におけるテーパ部６３５と向かい合い、円筒部６６２の内周面６６２ｂが第１ケース部材２１における円盤部２１１の外周面２１１ｄと向かい合う。また、規制部材６６は、平板部６６１の端面６６１ａがヨーク６２の軸方向端面６２１ａに接触すると共に、円筒部６６２の平板部６６１とは反対側の端部における軸方向端面６６２ｃが軸受９１の外輪９１１に当接する。これにより、電磁石６１、ヨーク６２、及び回り止め部材６４の第１ケース部材２１に対する軸方向移動が規制される。   In the restricting member 66, the outer peripheral surface 662a of the cylindrical portion 662 faces the tapered portion 635 in the annular portion 632 of the restricting member 66, and the inner peripheral surface 662b of the cylindrical portion 662 is the outer peripheral surface 211d of the disc portion 211 in the first case member 21. Facing each other. Further, the regulating member 66 has an end surface 661 a of the flat plate portion 661 that contacts the axial end surface 621 a of the yoke 62, and an axial end surface 662 c of the end portion of the cylindrical portion 662 opposite to the flat plate portion 661 is an outer ring of the bearing 91. 911 abuts. Thereby, the axial movement of the electromagnet 61, the yoke 62, and the rotation preventing member 64 with respect to the first case member 21 is restricted.

テーパ部６６３は、径方向の外側に向かうほど、回り止め部材６４の環状部６４１との距離が遠ざかるように傾斜して形成されている。また、テーパ部６６３はアーマチャ６３Ａにおけるテーパ部６３５の対向面６３５ａと対向する対向面６６３ａを有し、これらの両対向面６３５ａ，６６３ａは略平行である。   The taper portion 663 is formed so as to be inclined so that the distance from the annular portion 641 of the rotation preventing member 64 increases as it goes outward in the radial direction. The tapered portion 663 has an opposing surface 663a that opposes the opposing surface 635a of the tapered portion 635 in the armature 63A, and these opposing surfaces 635a and 663a are substantially parallel.

電磁石６１のコイル巻線６１１に励磁電流が供給されると、ヨーク６２、アーマチャ６３、及び規制部材６６を磁束が通過する磁路Ｇが形成される。テーパ部６６３を通過した磁束は、規制部材６６のテーパ部６６３とアーマチャ６３Ａのテーパ部６３５との間の空間を磁路に含む。つまり、本実施の形態では、アーマチャ６３Ａが、規制部材６６のテーパ部６６３と、アーマチャ６３のテーパ部６３５との間の空間を通過する磁束によってヨーク６２に対して軸方向移動する。   When an exciting current is supplied to the coil winding 611 of the electromagnet 61, a magnetic path G through which the magnetic flux passes through the yoke 62, the armature 63, and the regulating member 66 is formed. The magnetic flux that has passed through the tapered portion 663 includes a space between the tapered portion 663 of the regulating member 66 and the tapered portion 635 of the armature 63A in the magnetic path. That is, in the present embodiment, the armature 63A moves in the axial direction with respect to the yoke 62 by the magnetic flux passing through the space between the tapered portion 663 of the restricting member 66 and the tapered portion 635 of the armature 63.

本実施の形態によっても、第１の実施の形態と同様の作用及び効果が得られる。また、規制部材６６のテーパ部６６３とアーマチャ６３Ａのテーパ部６３５との間の空間を磁束が通過するので、これらの両対向面間６３５ａ，６６３ａの距離を短くしながら、アーマチャ６３Ａの軸方向の移動距離を長くすることができる。   Also according to this embodiment, the same operations and effects as those of the first embodiment can be obtained. Further, since the magnetic flux passes through the space between the taper portion 663 of the restricting member 66 and the taper portion 635 of the armature 63A, the axial distance of the armature 63A can be reduced while shortening the distance between these opposing surfaces 635a and 663a. The moving distance can be increased.

（付記）
以上、本発明を上記第１乃至第３の実施の形態に基づいて説明したが、本発明はこれらの実施の形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で適宜変形して実施することが可能である。 (Appendix)
The present invention has been described based on the first to third embodiments. However, the present invention is not limited to these embodiments, and can be appropriately modified without departing from the spirit of the present invention. Can be implemented.

１…差動装置 ２…デフケース（第１回転部材）
３…差動機構 ４…クラッチ機構
５…連結部材 ６…アクチュエータ（移動力発生機構）
９…デフキャリア（収容部材） ３０…ピニオンシャフト（入力部材）
３２…サイドギヤ（第２回転部材，出力部材） ６１…電磁石
６２…ヨーク ６３，６３Ａ…アーマチャ（移動部材）
６３２…円環部 ６３４…傾斜部（円環部）
６５，６５Ａ，６６…規制部材 ６５０ｃ…端面（接触面）
６５１…平板部 ６５０ｂ，６５１ｂ，６６３ａ…対向面
６５２…円筒部 ９１…軸受 DESCRIPTION OF SYMBOLS 1 ... Differential gear 2 ... Differential case (1st rotation member)
3 ... Differential mechanism 4 ... Clutch mechanism 5 ... Connecting member 6 ... Actuator (moving force generating mechanism)
9 ... Differential carrier (accommodating member) 30 ... Pinion shaft (input member)
32 ... Side gear (second rotating member, output member) 61 ... Electromagnet 62 ... Yoke 63, 63A ... Armature (moving member)
632 ... Annular part 634 ... Inclined part (annular part)
65, 65A, 66 ... restriction member 650c ... end face (contact surface)
651 ... Flat plate portion 650b, 651b, 663a ... Opposing surface 652 ... Cylindrical portion 91 ... Bearing

Claims (5)

収容部材に収容された第１回転部材、及び前記第１回転部材と相対回転可能に配置された第２回転部材と、
前記第１回転部材に対する軸方向移動によって前記第１回転部材と前記第２回転部材とを相対回転不能に連結する連結部材と、
前記連結部材を軸方向移動させる移動力を発生する移動力発生機構とを備え、
前記移動発生機構は、
電磁石と、
前記収容部材に対して回り止めされると共に前記第１回転部材の外周に配置されたヨークと、
前記ヨークの前記第１回転部材に対する軸方向移動を規制する軟磁性体からなる規制部材と、
前記ヨークに対して軸方向移動して前記移動力を出力する軟磁性体からなる移動部材とを有し、
前記移動部材は、前記規制部材と対向する円環部を有し、前記規制部材と前記円環部との間の空間を通過する磁束によって前記ヨークに対して軸方向移動する、
駆動力伝達装置。 A first rotating member housed in a housing member, and a second rotating member arranged to be rotatable relative to the first rotating member;
A connecting member for connecting the first rotating member and the second rotating member so as not to be relatively rotatable by axial movement with respect to the first rotating member;
A moving force generating mechanism for generating a moving force for moving the connecting member in the axial direction;
The movement generation mechanism is
An electromagnet,
A yoke that is prevented from rotating with respect to the housing member and is disposed on an outer periphery of the first rotating member;
A restricting member made of a soft magnetic material that restricts axial movement of the yoke relative to the first rotating member;
A moving member made of a soft magnetic material that moves in the axial direction with respect to the yoke and outputs the moving force;
The moving member has an annular part facing the restricting member, and moves in the axial direction with respect to the yoke by a magnetic flux passing through a space between the restricting member and the annular part.
Driving force transmission device. 前記規制部材は、その一部が前記ヨークに接触し、前記ヨークとの接触面と前記移動部材との対向面との間で磁束を通過させる、
請求項１に記載の駆動力伝達装置。 A part of the regulating member is in contact with the yoke and allows magnetic flux to pass between a contact surface with the yoke and a facing surface of the moving member;
The driving force transmission device according to claim 1. 前記規制部材は、前記第１回転部材の径方向の幅が前記第１回転部材の軸方向の厚みよりも広い円環板状の平板部を有し、前記平板部が前記移動部材の前記円環部と軸方向に対向する、
請求項１又は２に記載の駆動力伝達装置。 The restricting member has an annular plate-like flat plate portion in which a radial width of the first rotating member is wider than an axial thickness of the first rotating member, and the flat plate portion is the circle of the moving member. Opposite the ring part in the axial direction,
The driving force transmission device according to claim 1 or 2. 前記規制部材は、前記平板部の径方向の端部から軸方向に延在して形成された円筒部を有し、
前記円筒部は、前記第１回転部材に嵌め合わされ、前記平板部とは反対側の端部が前記第１回転部材を前記収容部材に対して回転可能に支持する軸受に当接する、
請求項３に記載の駆動力伝達装置。 The restricting member has a cylindrical portion formed extending in the axial direction from the radial end of the flat plate portion,
The cylindrical portion is fitted to the first rotating member, and an end opposite to the flat plate portion contacts a bearing that rotatably supports the first rotating member with respect to the housing member.
The driving force transmission device according to claim 3. 入力部材に入力された駆動力を一対の出力部材に差動を許容して配分する差動機構と、
前記差動機構を収容するデフケースと、
前記デフケースと前記差動機構の前記入力部材との間で前記駆動力を伝達するクラッチ機構とを備え、
前記クラッチ機構は、前記デフケース内で前記差動機構に対して前記デフケースの回転軸線に沿う中心軸方向に相対移動可能かつ相対回転不能に配置された連結部材、及び前記連結部材に前記中心軸方向への移動力を付与するアクチュエータを有し、
前記アクチュエータは、
電磁石と、
前記デフケースに対して回り止めされると共に前記デフケースの外周に配置されたヨークと、
前記ヨークの前記デフケースに対する軸方向移動を規制する軟磁性体からなる規制部材と、
前記ヨークに対して軸方向移動して前記移動力を出力する軟磁性体からなる移動部材とを有し、
前記移動部材は、前記規制部材と対向する円環部を有し、前記規制部材と前記円環部との間の空間を通過する磁束によって前記ヨークに対して軸方向移動する、
差動装置。 A differential mechanism that distributes the driving force input to the input member while allowing the differential to be distributed to the pair of output members;
A differential case that houses the differential mechanism;
A clutch mechanism for transmitting the driving force between the differential case and the input member of the differential mechanism;
The clutch mechanism includes a connecting member disposed in the differential case so as to be relatively movable and non-rotatable relative to the differential mechanism in the central axis direction along the rotational axis of the differential case, and to the connecting member in the central axis direction. Having an actuator that applies a moving force to
The actuator is
An electromagnet,
A yoke that is prevented from rotating with respect to the differential case and that is disposed on an outer periphery of the differential case;
A regulating member made of a soft magnetic material that regulates axial movement of the yoke relative to the differential case;
A moving member made of a soft magnetic material that moves in the axial direction with respect to the yoke and outputs the moving force;
The moving member has an annular part facing the restricting member, and moves in the axial direction with respect to the yoke by a magnetic flux passing through a space between the restricting member and the annular part.
Differential device.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022224441A1 (en) * 2021-04-23 2022-10-27 ジーケーエヌ オートモーティブ リミテッド Axial drive actuator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022224441A1 (en) * 2021-04-23 2022-10-27 ジーケーエヌ オートモーティブ リミテッド Axial drive actuator

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