JP2019218987A - Differential device - Google Patents

Differential device Download PDF

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JP2019218987A
JP2019218987A JP2018115784A JP2018115784A JP2019218987A JP 2019218987 A JP2019218987 A JP 2019218987A JP 2018115784 A JP2018115784 A JP 2018115784A JP 2018115784 A JP2018115784 A JP 2018115784A JP 2019218987 A JP2019218987 A JP 2019218987A
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transmission member
differential case
differential
pair
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JP6731447B2 (en
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和隆 川田
Kazutaka Kawada
和隆 川田
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GKN Driveline Japan Ltd
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Abstract

To provide a differential device which enables downsizing.SOLUTION: A differential device 1 includes: a differential case 3; an annular transmission member 5 which is housed in the differential case 3 in a relatively rotatable manner; a pinion 7 which is housed in the transmission member 5 so as to be able to autorotate and is revolved by rotation of the transmission member 5; a pair of side gears 9, 11 which engages with the pinion 7 and enables relative rotation; and a connection member 15 which is provided so as to be able to rotate integrally with the differential case 3 and has an intermittent part 13, which enables intermittent power transmission between the differential case 3 and the transmission member 5, between itself and the transmission member 5. A face gear pair is formed by the pinion 7 and the pair of side gears 9, 11.SELECTED DRAWING: Figure 1

Description

本発明は、車両に適用されるデファレンシャル装置に関する。   The present invention relates to a differential device applied to a vehicle.

従来、デファレンシャル装置としては、デフケースと、このデフケース内に相対回転可能に収容された環状の伝達部材としてのインナケースと、このインナケースに自転可能に収容されると共にインナケースの回転によって公転するピニオンと、このピニオンと噛み合って相対回転可能な一対のサイドギヤと、デフケースと一体回転可能に設けられインナケースとの間にデフケースとインナケースとの動力伝達を断続する断続部を有する連結部材としてのクラッチ部材とを備えたものが知られている(例えば、特許文献1参照)。   Conventionally, as a differential device, a differential case, an inner case as an annular transmission member housed in the differential case so as to be relatively rotatable, and a pinion rotatably housed in the inner case and revolving by rotation of the inner case A pair of side gears that mesh with the pinion and are relatively rotatable; and a clutch as a connecting member having a connecting / disconnecting portion between the differential case and the inner case that is rotatably provided integrally with the differential case and that disconnects power transmission between the differential case and the inner case. A member including a member is known (for example, see Patent Document 1).

このデファレンシャル装置では、ピニオンと一対のサイドギヤとが、ベベルギヤ組からなり、クラッチ部材の作動により断続部が接続されると、デフケースとインナケースとの間の動力伝達が可能となり、インナケースからピニオンを介して一対のサイドギヤに動力が伝達される。   In this differential device, the pinion and the pair of side gears are formed of a bevel gear set, and when the intermittent portion is connected by the operation of the clutch member, power transmission between the differential case and the inner case becomes possible, and the pinion is moved from the inner case to the inner case. Power is transmitted to the pair of side gears via the pair of side gears.

特開2011−241887号公報JP 2011-241887 A

ところで、上記特許文献1のようなデファレンシャル装置では、ピニオンと一対のサイドギヤとが、ベベルギヤ組からなるので、ピニオンと一対のサイドギヤとの噛み合い反力によって、ピニオンが径方向外側に移動しようとする。   By the way, in the differential device as disclosed in Patent Document 1, since the pinion and the pair of side gears are formed by a bevel gear set, the pinion tends to move radially outward due to the reaction force of the engagement between the pinion and the pair of side gears.

この噛み合い反力によるピニオンの径方向外側への移動を受けるために、伝達部材の径方向の肉厚を確保しなければならず、伝達部材の径方向の肉厚を低減するには制限があり、デファレンシャル装置を径方向に小型化するには限界があった。   In order to receive the radial displacement of the pinion due to the meshing reaction force, the radial thickness of the transmission member must be ensured, and there is a limit in reducing the radial thickness of the transmission member. However, there is a limit in reducing the size of the differential device in the radial direction.

加えて、ピニオンと一対のサイドギヤとは、ベベルギヤ組からなるので、噛み合い部が軸方向に張り出してしまい、デファレンシャル装置のが軸方向に大型化していた。   In addition, since the pinion and the pair of side gears are formed of a bevel gear set, the meshing portions protrude in the axial direction, and the size of the differential device is increased in the axial direction.

そこで、この発明は、小型化することができるデファレンシャル装置の提供を目的としている。   Therefore, an object of the present invention is to provide a differential device that can be reduced in size.

本発明は、デフケースと、このデフケース内に相対回転可能に収容された環状の伝達部材と、この伝達部材に自転可能に収容されると共に前記伝達部材の回転によって公転するピニオンと、このピニオンと噛み合って相対回転可能な一対のサイドギヤと、前記デフケース又は前記伝達部材のいずれか一方と一体回転可能に設けられ軸方向移動して前記デフケース又は前記伝達部材のいずれか他方と連結することにより前記デフケースと前記伝達部材との動力伝達を断続する断続部を有する連結部材とを備えたデファレンシャル装置であって、前記ピニオンと一対の前記サイドギヤとは、フェースギヤ組からなることを特徴とする。   The present invention provides a differential case, an annular transmission member housed in the differential case so as to be relatively rotatable, a pinion housed rotatably in the transmission member and revolving by the rotation of the transmission member, and meshing with the pinion A pair of side gears that are relatively rotatable, and the differential case is provided by being integrally rotatable with one of the differential case or the transmission member and moving in the axial direction to connect with the other of the differential case or the transmission member. A differential device comprising a connecting member having an intermittent portion for intermittently transmitting power to and from the transmission member, wherein the pinion and the pair of side gears are a face gear set.

このデファレンシャル装置では、ピニオンと一対のサイドギヤとが、フェースギヤ組からなるので、ピニオンと一対のサイドギヤとの噛み合い反力において、ピニオンを径方向外側に移動させようとする方向の力が抑制される。   In this differential device, since the pinion and the pair of side gears are a face gear set, the force in the direction of moving the pinion radially outward in the meshing reaction force between the pinion and the pair of side gears is suppressed. .

このため、伝達部材に入力される噛み合い反力によるピニオンの径方向外側への移動力が大幅に低減され、伝達部材の径方向の肉厚を低減でき、デファレンシャル装置を径方向に小型化することができる。   For this reason, the radially outward moving force of the pinion due to the meshing reaction force input to the transmission member is significantly reduced, the radial thickness of the transmission member can be reduced, and the differential device can be downsized in the radial direction. Can be.

加えて、ピニオンと一対のサイドギヤとは、フェースギヤ組からなるので、噛み合い部が軸方向に張り出すことがなく、デファレンシャル装置を軸方向に小型化することができる。   In addition, since the pinion and the pair of side gears are composed of a face gear set, the engaging portion does not protrude in the axial direction, and the differential device can be downsized in the axial direction.

従って、このようなデファレンシャル装置では、伝達部材を径方向に小型化でき、ピニオンと一対のサイドギヤとを軸方向に小型化できるので、全体的に小型化することができる。   Therefore, in such a differential device, the transmission member can be downsized in the radial direction, and the pinion and the pair of side gears can be downsized in the axial direction, so that the overall size can be reduced.

本発明によれば、小型化することができるデファレンシャル装置を提供することができるという効果を奏する。   ADVANTAGE OF THE INVENTION According to this invention, it is effective in the ability to provide the differential device which can be reduced in size.

本発明の第1実施形態に係るデファレンシャル装置の断面図である。It is a sectional view of a differential device concerning a 1st embodiment of the present invention. 本発明の第1実施形態に係るデファレンシャル装置の伝達部材の斜視図である。FIG. 2 is a perspective view of a transmission member of the differential device according to the first embodiment of the present invention. 本発明の第2実施形態に係るデファレンシャル装置の断面図である。It is a sectional view of a differential device concerning a 2nd embodiment of the present invention.

図1〜図3を用いて本発明の実施の形態に係るデファレンシャル装置について説明する。   A differential device according to an embodiment of the present invention will be described with reference to FIGS.

(第1実施形態)
図1,図2を用いて第1実施形態について説明する。
(1st Embodiment)
The first embodiment will be described with reference to FIGS.

本実施の形態に係るデファレンシャル装置1は、デフケース3と、このデフケース3内に相対回転可能に収容された環状の伝達部材5と、この伝達部材5に自転可能に収容されると共に伝達部材5の回転によって公転するピニオン7と、このピニオン7と噛み合って相対回転可能な一対のサイドギヤ9,11と、デフケース3と一体回転可能に設けられ伝達部材5との間にデフケース3と伝達部材5との動力伝達を断続する断続部13を有する連結部材15とを備えている。   The differential device 1 according to the present embodiment includes a differential case 3, an annular transmission member 5 housed in the differential case 3 so as to be relatively rotatable, and a rotation member housed in the transmission member 5. The pinion 7 revolves by rotation, a pair of side gears 9 and 11 that mesh with the pinion 7 and are relatively rotatable, and the differential case 3 and the transmission member 5 are provided between the differential case 3 and the transmission member 5 that are provided to be integrally rotatable with the differential case 3. A connection member 15 having an intermittent portion 13 for intermittently transmitting power.

そして、ピニオン7と一対のサイドギヤ9,11とは、フェースギヤ組からなる。   The pinion 7 and the pair of side gears 9 and 11 are a face gear set.

また、伝達部材5には、径方向に貫通された開口部17が設けられ、ピニオン7の外端面は、開口部17を介してデフケース3に当接されている。   The transmission member 5 is provided with an opening 17 penetrated in the radial direction, and an outer end surface of the pinion 7 is in contact with the differential case 3 via the opening 17.

さらに、伝達部材5には、ピニオン7を伝達部材5の回転方向に係合させる係合部19が設けられている。   Further, the transmission member 5 is provided with an engagement portion 19 for engaging the pinion 7 in the rotation direction of the transmission member 5.

また、ピニオン7の内端面側には、ピニオン7と回転軸方向に当接する保持部材21が配置されている。   Further, a holding member 21 that is in contact with the pinion 7 in the rotation axis direction is disposed on the inner end surface side of the pinion 7.

図1,図2に示すように、デフケース3は、軸方向の両側に設けられたボス部23,25の外周でそれぞれベアリング(不図示)を介してキャリアなどの静止系部材(不図示)に回転可能に支持されている。   As shown in FIGS. 1 and 2, the differential case 3 is attached to a stationary system member (not shown) such as a carrier via bearings (not shown) at the outer periphery of boss portions 23 and 25 provided on both sides in the axial direction. It is rotatably supported.

このデフケース3には、リングギヤ(不図示)が固定されるフランジ部27が形成され、リングギヤが駆動力を伝達する動力伝達ギヤ(不図示)と噛み合い、駆動力が伝達されてデフケース3を回転駆動させる。   A flange 27 to which a ring gear (not shown) is fixed is formed in the differential case 3, and the ring gear meshes with a power transmission gear (not shown) for transmitting a driving force, and the driving force is transmitted to rotate the differential case 3. Let it.

このようなデフケース3には、相対回転可能に伝達部材5が収容され、断続部13が接続状態であると、リングギヤに入力された駆動力が伝達部材5を介して差動機構29に伝達される。   The transmission member 5 is accommodated in such a differential case 3 so as to be relatively rotatable. When the intermittent portion 13 is in a connected state, the driving force input to the ring gear is transmitted to the differential mechanism 29 via the transmission member 5. You.

なお、連結部材15は、常時、伝達部材5に対して回転方向に一体的に連動回転して、軸方向に移動可能に配置され、デフケース3に対して断続部13を介して動力伝達を断続させてもよい。   The connecting member 15 is always arranged integrally with the transmission member 5 in a rotational direction integrally with the transmission member 5 so as to be movable in the axial direction, and intermittently transmits and receives power to the differential case 3 via the intermittent portion 13. You may let it.

差動機構29は、伝達部材5と、ピニオン7と、一対のサイドギヤ9,11とを備えている。   The differential mechanism 29 includes the transmission member 5, the pinion 7, and a pair of side gears 9 and 11.

伝達部材5は、環状に形成されて回転軸心がデフケース3と平行に配置され、デフケース3内にデフケース3と相対回転可能に収容されている。   The transmission member 5 is formed in an annular shape, the rotation axis thereof is arranged in parallel with the differential case 3, and is housed in the differential case 3 so as to be rotatable relative to the differential case 3.

この伝達部材5には、径方向に貫通された円形状の開口部17が、周方向等間隔に複数(ここでは2つ)設けられ、ピニオン7の外端面側が挿入される。   A plurality (two in this case) of circular openings 17 penetrated in the radial direction are provided in the transmission member 5 at equal intervals in the circumferential direction, and the outer end face side of the pinion 7 is inserted.

なお、隣り合う開口部17,17の間には、伝達部材5を径方向に貫通して長穴形状の孔部31が設けられ、この孔部31を介して潤滑油が流入されて潤滑性が向上されると共に、伝達部材5が軽量化されている。   An elongated hole 31 is provided between the adjacent openings 17 and 17 through the transmission member 5 in the radial direction, and lubricating oil flows through the hole 31 to improve lubricity. And the transmission member 5 is reduced in weight.

このような伝達部材5の開口部17の周縁には、一対の係合部19,19が回転軸心側に向けて突設され、開口部17に挿入されたピニオン7と伝達部材5の回転方向に係合し、伝達部材5に入力された駆動力をピニオン7に伝達する。   A pair of engaging portions 19, 19 are provided on the periphery of the opening 17 of the transmission member 5 so as to protrude toward the rotation axis, and the pinion 7 inserted into the opening 17 and the rotation of the transmission member 5 are rotated. And transmits the driving force input to the transmission member 5 to the pinion 7.

ピニオン7は、伝達部材5の複数(ここでは2つ)の開口部17に外端面側を挿入してそれぞれ配置され、一対の係合部19,19と係合することにより伝達部材5の回転によって公転する。   The pinion 7 is disposed by inserting the outer end surface side into a plurality of (here, two) openings 17 of the transmission member 5, and is engaged with a pair of engagement portions 19, 19 to rotate the transmission member 5. Revolves around.

このピニオン7は、伝達部材5の開口部17に挿入された状態で、外端面がデフケース3に形成された球面状の受面33に当接され、この受面33がピニオン7の公転時に発生する径方向への移動を受ける。   When the pinion 7 is inserted into the opening 17 of the transmission member 5, the outer end face abuts against a spherical receiving surface 33 formed on the differential case 3, and the receiving surface 33 is generated when the pinion 7 revolves. To move in the radial direction.

なお、デフケース3の受面33には、デフケース3を径方向に貫通して穴部35が設けられ、この穴部35を介してデフケース3内に流入された潤滑油が排出される。   The receiving surface 33 of the differential case 3 is provided with a hole 35 penetrating the differential case 3 in the radial direction, and the lubricating oil flowing into the differential case 3 through the hole 35 is discharged.

加えて、穴部35は、ピニオン7の回転軸心からデフケース3の軸方向にオフセットして配置されており、ピニオン7の自転時や公転時の安定性が保持されている。   In addition, the hole 35 is arranged offset from the rotation axis of the pinion 7 in the axial direction of the differential case 3, and the stability of the pinion 7 at the time of rotation and revolution is maintained.

このピニオン7の内端面側には、ピニオン7の回転軸方向にピニオン7と当接する環状に形成された保持部材21が配置されている。   On the inner end face side of the pinion 7, an annular holding member 21 that is in contact with the pinion 7 in the rotation axis direction of the pinion 7 is arranged.

このようにピニオン7の内端面側にピニオン7と当接する保持部材21を配置することにより、ピニオン7の径方向位置を保持して位置決めすることができ、ピニオン7の自転時や公転時の安定性を保持することができる。   By arranging the holding member 21 in contact with the pinion 7 on the inner end face side of the pinion 7 in this manner, the position of the pinion 7 in the radial direction can be held and the pinion 7 can be stabilized during rotation and revolution. Sex can be maintained.

このようなピニオン7は、一対のサイドギヤ9,11に駆動力を伝達すると共に、噛み合っている一対のサイドギヤ9,11に差回転が生じると回転駆動されるように、伝達部材5の開口部17と一対の係合部19,19とに自転可能に支持されている。   The pinion 7 transmits the driving force to the pair of side gears 9, 11, and is rotated by a differential rotation of the pair of meshed side gears 9, 11 so that the pinion 7 is rotated. And a pair of engaging portions 19, 19 so as to be rotatable.

一対のサイドギヤ9,11は、それぞれに形成されたボス部37,39でデフケース3に相対回転可能に支持され、ピニオン7と噛み合っている。   The pair of side gears 9 and 11 are rotatably supported by the differential case 3 by boss portions 37 and 39 formed respectively, and mesh with the pinion 7.

この一対のサイドギヤ9,11は、フェースギヤで構成され、それぞれがピニオン7と噛み合うことにより、フェースギヤ組を構成している。   The pair of side gears 9 and 11 are formed of face gears, and each mesh with the pinion 7 to form a face gear set.

このようにピニオン7と一対のサイドギヤ9,11とをフェースギヤ組とすることにより、ギヤ組の噛み合い反力が、一対のサイドギヤ9,11をそれぞれ軸方向外側に移動させる方向に作用するようになり、ピニオン7を径方向外側に移動させる方向への力が大幅に抑制される。   By forming the pinion 7 and the pair of side gears 9 and 11 as a face gear set in this manner, the meshing reaction force of the gear set acts in the direction of moving the pair of side gears 9 and 11 outward in the axial direction, respectively. Thus, the force in the direction of moving the pinion 7 outward in the radial direction is greatly suppressed.

このため、一対のサイドギヤ9,11とデフケース3との軸方向間には、ピニオン7との噛み合い反力によるサイドギヤ9,11の軸方向への移動を受けるスラストワッシャ41,43がそれぞれ配置されている。   Therefore, between the pair of side gears 9 and 11 and the differential case 3 in the axial direction, thrust washers 41 and 43 which receive the movement of the side gears 9 and 11 in the axial direction due to the reaction force meshing with the pinion 7 are arranged respectively. I have.

一方、伝達部材5には、フェースギヤ組の噛み合い反力によるピニオン7の径方向への移動を受ける部分を設ける必要がなく、伝達部材5の径方向の肉厚を低減して、伝達部材5を径方向に小型化でき、デファレンシャル装置1を径方向に小型化することができる。   On the other hand, the transmission member 5 does not need to be provided with a portion that receives the radial movement of the pinion 7 due to the meshing reaction force of the face gear set, and the radial thickness of the transmission member 5 is reduced, so that the transmission member 5 Can be reduced in the radial direction, and the differential device 1 can be reduced in the radial direction.

加えて、本実施の形態においては、ピニオン7の外端面側は、伝達部材5の開口部17に挿入されているので、伝達部材5にピニオン7の公転時に発生するピニオン7の移動力を受ける部分も設ける必要がなく、伝達部材5の径方向の肉厚を、デフケース3と伝達部材5との間で動力伝達を行える分だけ確保すればよく、伝達部材5を径方向にさらに小型化することができる。   In addition, in the present embodiment, since the outer end face side of the pinion 7 is inserted into the opening 17 of the transmission member 5, the transmission member 5 receives the moving force of the pinion 7 generated when the pinion 7 revolves. There is no need to provide any portion, and the thickness of the transmission member 5 in the radial direction may be ensured by the amount capable of transmitting power between the differential case 3 and the transmission member 5, and the transmission member 5 is further reduced in the radial direction. be able to.

さらには、伝達部材5の開口部17を介してピニオン7の外端面と当接するデフケース3の受面33には、主にピニオン7の公転時に発生するピニオン7の移動力が入力されるだけであるので、デフケース3の径方向の肉厚を、ピニオン7の公転時の移動力を受ける分だけ確保すればよく、デフケース3が径方向に大型化することがない。   Furthermore, the moving force of the pinion 7, which is mainly generated when the pinion 7 revolves, is merely input to the receiving surface 33 of the differential case 3 that comes into contact with the outer end surface of the pinion 7 through the opening 17 of the transmission member 5. Therefore, the thickness of the differential case 3 in the radial direction is sufficient to receive the moving force of the pinion 7 at the time of revolution, and the differential case 3 is not enlarged in the radial direction.

加えて、ピニオン7と一対のサイドギヤ9,11とは、フェースギヤ組からなるので、ベベルギヤ組で構成したときに比較して、噛み合い部が軸方向に張り出すことがなく、噛み合い部を軸方向にコンパクトに配置することができ、デファレンシャル装置1を軸方向に小型化することができる。   In addition, since the pinion 7 and the pair of side gears 9 and 11 are formed of a face gear set, the meshing portion does not protrude in the axial direction as compared with the case where the pinion 7 is formed of a bevel gear set. The differential device 1 can be downsized in the axial direction.

このようなフェースギヤで構成された一対のサイドギヤ9,11は、内周側にスプライン形状の連結部45,47がそれぞれ設けられ、例えば、左右車輪などの出力側の機構に一体回転可能に連結された駆動軸(不図示)がそれぞれサイドギヤ9,11と一体回転可能に連結され、伝達部材5に入力された駆動力を駆動軸を介して出力側の機構に出力する。   The pair of side gears 9 and 11 constituted by such face gears are provided with spline-shaped connecting portions 45 and 47 on the inner peripheral side, respectively, and are connected to output-side mechanisms such as left and right wheels so as to be integrally rotatable. The driven shaft (not shown) is connected to the side gears 9 and 11 so as to be integrally rotatable, respectively, and outputs the driving force input to the transmission member 5 to the output side mechanism via the drive shaft.

このようなデフケース3から差動機構29に伝達される駆動力は、デフケース3と伝達部材5との間に設けられた連結部材15を操作することによって断続される。   The driving force transmitted from the differential case 3 to the differential mechanism 29 is interrupted by operating the coupling member 15 provided between the differential case 3 and the transmission member 5.

なお、デファレンシャル装置1のように、デフケース3と差動機構29との間の動力伝達を断続するデファレンシャル装置は、いわゆるフリーランニングデフとなっている。   Note that a differential device that interrupts power transmission between the differential case 3 and the differential mechanism 29 like the differential device 1 is a so-called free running differential.

連結部材15は、環状に形成され、周方向に連続する一部材で形成された基部がデフケース3の壁部と伝達部材5との軸方向間に軸方向移動可能に配置されている。   The connecting member 15 is formed in an annular shape, and a base formed of one member that is continuous in the circumferential direction is disposed so as to be axially movable between the wall of the differential case 3 and the transmitting member 5 in the axial direction.

この連結部材15のデフケース3の壁部側には、デフケース3と一体回転可能に係合する係合部49が設けられ、連結部材15の伝達部材5側には、断続部13が設けられている。   On the wall side of the differential case 3 of the connecting member 15, there is provided an engaging portion 49 which is integrally rotatably engaged with the differential case 3, and on the transmitting member 5 side of the connecting member 15, an intermittent portion 13 is provided. I have.

係合部49は、連結部材15の基部に周方向等間隔に設けられた複数の凸部と、デフケース3の壁部に周方向等間隔に貫通して設けられた孔部とからなる。   The engagement portion 49 includes a plurality of protrusions provided at regular intervals in the circumferential direction on a base portion of the connecting member 15 and a hole provided through the wall of the differential case 3 at regular intervals in the circumferential direction.

この凸部と孔部とが回転方向に係合することにより、連結部材15がデフケース3に回り止めされ、連結部材15とデフケース3とが一体回転可能となる。   The engagement between the projection and the hole in the rotation direction prevents the connection member 15 from rotating around the differential case 3, and the connection member 15 and the differential case 3 can be integrally rotated.

この係合部49には、連結部材15を断続部13の接続方向に移動させるカムが設けられている。詳細には、凸部と孔部との周方向両側の対向面には、同一傾斜のカム面がそれぞれ形成されている。   The engaging portion 49 is provided with a cam for moving the connecting member 15 in the connecting direction of the intermittent portion 13. Specifically, cam surfaces having the same inclination are formed on opposing surfaces on both circumferential sides of the convex portion and the hole portion, respectively.

このため、連結部材15が断続部13の接続方向に移動され、デフケース3と伝達部材5との間の断続部13に回転方向の噛み合い作用が生じたときに、デフケース3の回転によってそれぞれのカム面が係合することにより、連結部材15をさらに断続部13の噛み合い方向に移動させ、断続部13の接続を強化させる。   For this reason, when the connecting member 15 is moved in the connecting direction of the intermittent portion 13 and the intermittent portion 13 between the differential case 3 and the transmission member 5 is engaged in the rotational direction, the rotation of the differential case 3 causes each cam to rotate. By the engagement of the surfaces, the connecting member 15 is further moved in the direction in which the intermittent portion 13 engages, and the connection of the intermittent portion 13 is enhanced.

断続部13は、連結部材15の基部の係合部49と軸方向反対側の側面で連結部材15と伝達部材5との軸方向間に設けられ、伝達部材5と連結部材15とにそれぞれ周方向に複数形成されて互いに噛み合う噛み合い歯51,53となっている。   The intermittent portion 13 is provided between the coupling member 15 and the transmission member 5 in the axial direction on the side opposite to the engagement portion 49 of the base of the coupling member 15 in the axial direction. A plurality of meshing teeth 51 and 53 are formed in the direction and mesh with each other.

この断続部13は、互いの噛み合い歯51,53が噛み合うことにより、連結部材15と伝達部材5とが一体回転可能に接続、すなわちデフケース3と伝達部材5とが一体回転可能に接続され、デフケース3と伝達部材5との間の動力伝達が可能となる。   The intermittent portion 13 is connected to the coupling member 15 and the transmission member 5 so as to be integrally rotatable when the meshing teeth 51 and 53 are meshed with each other, that is, the differential case 3 and the transmission member 5 are connected so as to be integrally rotatable. Power transmission between the transmission member 3 and the transmission member 5 becomes possible.

このようなデフケース3と伝達部材5との間の動力伝達を断続する断続部13を構成する連結部材15は、アクチュエータ55によって軸方向に移動操作される。   The connecting member 15 forming the intermittent portion 13 for intermittently transmitting the power between the differential case 3 and the transmission member 5 is operated to move in the axial direction by the actuator 55.

アクチュエータ55は、デフケース3のボス部25の外周で連結部材15と軸方向に隣接して配置されている。   The actuator 55 is arranged on the outer periphery of the boss 25 of the differential case 3 so as to be adjacent to the connecting member 15 in the axial direction.

このアクチュエータ55は、例えば、静止系部材に回り止めされた電磁石と、軸方向移動可能で連結部材15と当接可能に配置され電磁石の励磁により断続部13の接続方向に移動されるプランジャとを有する電磁式アクチュエータからなる。   The actuator 55 includes, for example, an electromagnet that is prevented from rotating by a stationary member, and a plunger that is axially movable and is disposed so as to be in contact with the connecting member 15 and is moved in the connection direction of the intermittent portion 13 by excitation of the electromagnet. Comprising an electromagnetic actuator.

なお、連結部材15は、不図示ではあるが、リターンスプリングによって、常時、軸方向の断続部13の接続解除方向へ付勢されている。   Although not shown, the connecting member 15 is always urged by a return spring in a direction of disconnecting the intermittent portion 13 in the axial direction.

但し、リターンスプリングの付勢の方向は、常時、連結部材15を軸方向の断続部13の接続方向へ付勢していて、アクチュエータ55により連結部材15を接続解除方向へ操作してもよい。   However, the return spring may always be biased in the connecting direction of the connecting portion 13 in the axial direction, and the connecting member 15 may be operated by the actuator 55 in the disconnecting direction.

このようなアクチュエータ55は、電磁石の励磁によりプランジャが断続部13の接続方向に移動され、連結部材15をリターンスプリングの付勢力に抗して断続部13の接続方向へ移動させる。   In such an actuator 55, the plunger is moved in the connection direction of the intermittent portion 13 by the excitation of the electromagnet, and the connecting member 15 is moved in the connection direction of the intermittent portion 13 against the urging force of the return spring.

この連結部材15の断続部13の接続方向への移動により、断続部13が接続され、デフケース3と伝達部材5との間の動力伝達が可能となる。   By the movement of the connecting member 15 in the connecting direction of the intermittent portion 13, the intermittent portion 13 is connected, and power transmission between the differential case 3 and the transmission member 5 becomes possible.

一方、アクチュエータ55の電磁石の励磁を停止することにより、リターンスプリングの付勢力によって、連結部材15が断続部13の接続解除方向へ移動される。   On the other hand, when the excitation of the electromagnet of the actuator 55 is stopped, the connecting member 15 is moved in the disconnecting direction of the intermittent portion 13 by the urging force of the return spring.

この連結部材15の断続部13の接続解除方向への移動により、断続部13の接続が解除され、デフケース3と伝達部材5との間の動力伝達が遮断される。   By the movement of the connecting member 15 in the disconnecting direction of the intermittent portion 13, the connection of the intermittent portion 13 is released, and the power transmission between the differential case 3 and the transmission member 5 is cut off.

このようなアクチュエータ55は、連結部材15と軸方向に隣接して配置されており、ピニオン7と一対のサイドギヤ9,11とがフェースギヤ組からなるので、差動機構29が軸方向に小型化されることによって、アクチュエータ55の配置位置を軸方向内側に移動することができる。   Such an actuator 55 is disposed adjacent to the connecting member 15 in the axial direction, and the pinion 7 and the pair of side gears 9 and 11 are formed of a face gear set. Therefore, the differential mechanism 29 is downsized in the axial direction. Accordingly, the position of the actuator 55 can be moved inward in the axial direction.

このため、アクチュエータ55を含めたデファレンシャル装置1を軸方向へ小型化することができる。   Therefore, the size of the differential device 1 including the actuator 55 can be reduced in the axial direction.

このようなデファレンシャル装置1では、ピニオン7と一対のサイドギヤ9,11とが、フェースギヤ組からなるので、ピニオン7と一対のサイドギヤ9,11との噛み合い反力において、ピニオン7を径方向外側に移動させようとする方向の力が抑制される。   In such a differential device 1, since the pinion 7 and the pair of side gears 9 and 11 are formed of a face gear set, the pinion 7 is moved radially outward in the reaction force of the engagement between the pinion 7 and the pair of side gears 9 and 11. The force in the direction to be moved is suppressed.

このため、伝達部材5に入力される噛み合い反力によるピニオン7の径方向外側への移動力が大幅に低減され、伝達部材5の径方向の肉厚を低減でき、デファレンシャル装置1を径方向に小型化することができる。   For this reason, the radially outward moving force of the pinion 7 due to the meshing reaction force input to the transmission member 5 is greatly reduced, the radial thickness of the transmission member 5 can be reduced, and the differential device 1 can be moved in the radial direction. The size can be reduced.

加えて、ピニオン7と一対のサイドギヤ9,11とは、フェースギヤ組からなるので、噛み合い部が軸方向に張り出すことがなく、デファレンシャル装置1を軸方向に小型化することができる。   In addition, since the pinion 7 and the pair of side gears 9 and 11 are formed as a face gear set, the engagement portion does not protrude in the axial direction, and the differential device 1 can be downsized in the axial direction.

従って、このようなデファレンシャル装置1では、伝達部材5を径方向に小型化でき、ピニオン7と一対のサイドギヤ9,11とを軸方向に小型化できるので、全体的に小型化することができる。   Therefore, in such a differential device 1, the transmission member 5 can be downsized in the radial direction, and the pinion 7 and the pair of side gears 9 and 11 can be downsized in the axial direction, so that the overall size can be reduced.

また、伝達部材5には、径方向に貫通された開口部17が設けられ、ピニオン7の外端面は、開口部17を介してデフケース3に当接されているので、伝達部材5がピニオン7の径方向外側への移動を受ける必要がなく、さらに伝達部材5を径方向に小型化することができる。   The transmission member 5 is provided with an opening 17 penetrated in the radial direction, and the outer end surface of the pinion 7 is in contact with the differential case 3 via the opening 17. Does not need to be moved outward in the radial direction, and the transmission member 5 can be further downsized in the radial direction.

さらに、伝達部材5には、ピニオン7を伝達部材5の回転方向に係合させる係合部19が設けられているので、伝達部材5とピニオン7との間の動力伝達を安定して行うことができる。   Furthermore, since the transmission member 5 is provided with the engagement portion 19 that engages the pinion 7 in the rotation direction of the transmission member 5, it is possible to stably transmit power between the transmission member 5 and the pinion 7. Can be.

また、ピニオン7の内端面側には、ピニオン7と回転軸方向に当接する保持部材21が配置されているので、ピニオン7の径方向位置を安定して位置決めすることができる。   In addition, since the holding member 21 that is in contact with the pinion 7 in the rotation axis direction is disposed on the inner end surface side of the pinion 7, the radial position of the pinion 7 can be stably positioned.

(第2実施形態)
図3を用いて第2実施形態について説明する。
(2nd Embodiment)
The second embodiment will be described with reference to FIG.

本実施の形態に係るデファレンシャル装置101は、ピニオン7が、ピニオンシャフト103に支持され、伝達部材5には、ピニオン7の外端面と当接する受面105が設けられている。   In the differential device 101 according to the present embodiment, the pinion 7 is supported by the pinion shaft 103, and the transmission member 5 is provided with a receiving surface 105 that contacts the outer end surface of the pinion 7.

なお、第1実施形態と同一の構成には、同一の記号を記して構成及び機能説明は第1実施形態を参照するものとし省略するが、第1実施形態と同一の構成であるので、得られる効果は同一である。   The same components as those in the first embodiment are denoted by the same reference numerals, and the description of the configurations and functions is omitted by referring to the first embodiment. The effect obtained is the same.

図3に示すように、ピニオン7は、両端側がそれぞれ伝達部材5と保持部材21とに支持されたピニオンシャフト103に支持されている。   As shown in FIG. 3, the pinion 7 is supported by a pinion shaft 103 whose both ends are supported by the transmission member 5 and the holding member 21, respectively.

ピニオンシャフト103は、伝達部材5に設けられた孔部107と、保持部材21に設けられた穴部109とに両端部がそれぞれ支持され、伝達部材5と一体回転可能に配置されている。   Both ends of the pinion shaft 103 are supported by a hole 107 provided in the transmission member 5 and a hole 109 provided in the holding member 21, and are arranged to be integrally rotatable with the transmission member 5.

このピニオンシャフト103の伝達部材5側の端部には、ピニオン7が自転可能に支持されており、伝達部材5の回転によるピニオンシャフト103の回転によりピニオン7が公転される。   A pinion 7 is rotatably supported at an end of the pinion shaft 103 on the transmission member 5 side, and the pinion 7 revolves by rotation of the pinion shaft 103 due to rotation of the transmission member 5.

このピニオン7を支持する伝達部材5には、ピニオン7の外端面と当接する球面状に形成された受面105が設けられている。   The transmission member 5 that supports the pinion 7 is provided with a spherical receiving surface 105 that comes into contact with the outer end surface of the pinion 7.

このようなピニオン7を挿通するピニオンシャフト103の軸方向の両先端側の外端面は、デフケース3の内周面を摺動可能であり、ピニオンシャフト103の軸方向の位置決め、すなわち抜け止めがなされている。   The outer end surfaces of both ends of the pinion shaft 103 in the axial direction through which the pinion 7 is inserted are slidable on the inner peripheral surface of the differential case 3, and the pinion shaft 103 is axially positioned, that is, prevented from falling off. ing.

ここで、ピニオン7と一対のサイドギヤ9,11とは、フェースギヤ組からなるので、ピニオン7と一対のサイドギヤ9,11との噛み合い反力において、ピニオン7を径方向外側に移動させようとする方向の力が抑制されている。   Here, since the pinion 7 and the pair of side gears 9 and 11 are a face gear set, the pinion 7 is moved radially outward due to the meshing reaction force between the pinion 7 and the pair of side gears 9 and 11. Directional forces are suppressed.

このため、伝達部材5の受面105には、主にピニオン7の公転時に発生するピニオン7の径方向外側への移動力が入力されるだけであるので、伝達部材5の径方向の肉厚を低減することができ、伝達部材5を径方向に小型化することができる。   For this reason, only the radial movement force of the pinion 7 generated during the revolution of the pinion 7 is input to the receiving surface 105 of the transmission member 5. Can be reduced, and the transmission member 5 can be downsized in the radial direction.

このようにピニオン7をピニオンシャフト103に支持させていても、伝達部材5に入力される噛み合い反力によるピニオン7の径方向外側への移動力が大幅に低減されているので、伝達部材5を径方向に小型化することができる。   Even if the pinion 7 is supported by the pinion shaft 103 as described above, the radially outward movement of the pinion 7 due to the meshing reaction force input to the transmission member 5 is greatly reduced. The size can be reduced in the radial direction.

加えて、ピニオン7は、ピニオンシャフト103に支持されることによって公転するので、伝達部材5にピニオン7と回転方向に係合する係合部19(図2参照)を設ける必要がなく、伝達部材5を簡素化することができる。   In addition, since the pinion 7 revolves by being supported by the pinion shaft 103, there is no need to provide the transmission member 5 with the engaging portion 19 (see FIG. 2) that engages with the pinion 7 in the rotation direction. 5 can be simplified.

このようなデファレンシャル装置101では、ピニオン7が、ピニオンシャフト103に支持され、伝達部材5には、ピニオン7の外端面と当接する受面105が設けられているので、ピニオン7をピニオンシャフト103に支持する場合であっても、伝達部材5の径方向の肉厚を低減することができ、小型化することができる。   In such a differential device 101, the pinion 7 is supported by the pinion shaft 103, and the transmission member 5 is provided with the receiving surface 105 that is in contact with the outer end surface of the pinion 7, so that the pinion 7 is attached to the pinion shaft 103. Even in the case of supporting, the thickness of the transmission member 5 in the radial direction can be reduced, and the size can be reduced.

なお、本発明の実施の形態に係るデファレンシャル装置では、アクチュエータが、電磁式アクチュエータとなっているが、これに限らず、油圧シリンダ・ピストン機構、モータ・ギヤ・カム機構、モータ・ギヤ・ネジ機構、モータ・シフトロッド機構、エアダイアフラムなど、連結部材を移動操作できるものであれば種々のアクチュエータを利用可能である。   In the differential device according to the embodiment of the present invention, the actuator is an electromagnetic actuator. However, the actuator is not limited to this, and may be a hydraulic cylinder / piston mechanism, a motor / gear / cam mechanism, a motor / gear / screw mechanism. Various actuators can be used as long as they can move the connecting member, such as a motor / shift rod mechanism and an air diaphragm.

1,101…デファレンシャル装置
3…デフケース
5…伝達部材
7…ピニオン
9,11…サイドギヤ
13…断続部
15…連結部材
17…開口部
19…係合部
21…保持部材
DESCRIPTION OF SYMBOLS 1,101 ... Differential device 3 ... Diff case 5 ... Transmission member 7 ... Pinion 9,11 ... Side gear 13 ... Intermittent part 15 ... Connecting member 17 ... Opening part 19 ... Engagement part 21 ... Holding member

Claims (4)

デフケースと、このデフケース内に相対回転可能に収容された環状の伝達部材と、この伝達部材に自転可能に収容されると共に前記伝達部材の回転によって公転するピニオンと、このピニオンと噛み合って相対回転可能な一対のサイドギヤと、前記デフケース又は前記伝達部材のいずれか一方と一体回転可能に設けられ軸方向移動して前記デフケース又は前記伝達部材のいずれか他方と連結することにより前記デフケースと前記伝達部材との動力伝達を断続する断続部を有する連結部材とを備えたデファレンシャル装置であって、
前記ピニオンと一対の前記サイドギヤとは、フェースギヤ組からなることを特徴とするデファレンシャル装置。
A differential case, an annular transmission member housed in the differential case so as to be relatively rotatable, a pinion housed rotatably in the transmission member and revolving by the rotation of the transmission member, and meshing with the pinion to be relatively rotatable. A pair of side gears, the differential case and the transmission member are provided so as to be integrally rotatable with one of the differential case or the transmission member, and are axially moved and connected to the other one of the differential case or the transmission member. A coupling member having an intermittent portion for intermittently transmitting the power transmission,
The differential device according to claim 1, wherein the pinion and the pair of side gears include a face gear set.
請求項1記載のデファレンシャル装置であって、
前記伝達部材には、径方向に貫通された開口部が設けられ、
前記ピニオンの外端面は、前記開口部を介して前記デフケースに当接されていることを特徴とするデファレンシャル装置。
The differential device according to claim 1,
The transmission member is provided with an opening penetrated in the radial direction,
An outer end surface of the pinion is in contact with the differential case through the opening.
請求項1又は2記載のデファレンシャル装置であって、
前記伝達部材には、前記ピニオンを前記伝達部材の回転方向に係合させる係合部が設けられていることを特徴とするデファレンシャル装置。
It is a differential device of Claim 1 or 2, Comprising:
A differential device, wherein the transmission member is provided with an engagement portion for engaging the pinion in a rotation direction of the transmission member.
請求項1乃至3のいずれか1項に記載のデファレンシャル装置であって、
前記ピニオンの内端面側には、前記ピニオンと回転軸方向に当接する保持部材が配置されていることを特徴とするデファレンシャル装置。
The differential device according to claim 1, wherein:
A differential device, wherein a holding member that is in contact with the pinion in a rotation axis direction is disposed on an inner end surface side of the pinion.
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