JP6705293B2 - Driving force interrupting device and differential limiting device - Google Patents

Driving force interrupting device and differential limiting device Download PDF

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JP6705293B2
JP6705293B2 JP2016111139A JP2016111139A JP6705293B2 JP 6705293 B2 JP6705293 B2 JP 6705293B2 JP 2016111139 A JP2016111139 A JP 2016111139A JP 2016111139 A JP2016111139 A JP 2016111139A JP 6705293 B2 JP6705293 B2 JP 6705293B2
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magnetic flux
yoke
interrupting
moving
rotation
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JP2017161064A (en
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稔 鬼武
稔 鬼武
康憲 神谷
康憲 神谷
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JTEKT Corp
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Description

本発明は、駆動力断続装置及び差動制限装置に関する。 The present invention relates to a drive force connecting/disconnecting device and a differential limiting 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, there is a differential device that allows a differential between left and right wheels of a vehicle to distribute a driving force, and includes a meshing clutch that limits the differential between relatively rotatable rotating members (for example, Patent Document 1). 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 by a pinion shaft fixed to the differential case, a pair of side gears that mesh with the pair of pinion gears with their gear axes orthogonal to each other, and a differential case. The connecting member includes an interrupting member that is axially movable so as to be engaged with the formed hole in the rotation direction, and an actuator that moves the interrupting 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 of the pair of side gears, and rotates 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 is composed of an electromagnetic coil and a core arranged so as to surround the electromagnetic coil. The movable member is composed of 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 arranged inside the electromagnet, and the electromagnet and the interrupting member are arranged 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 toward the interrupting member, and the ring presses the interrupting member through the plate fixed to the interrupting member. The interrupting member receives this pressing force, moves in the axial direction, 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。 In the differential device of Patent Document 1, the cross-sectional shape of the core shown by reference numeral 79 in FIG. 1 is a substantially quadrangular shape formed so as to surround the electromagnetic coil, and is a portion facing a part of the inner peripheral surface of the electromagnetic coil. Are formed discontinuously. The plunger has an axial end facing 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 an inner peripheral surface of the electromagnetic coil in the axial direction are formed. Of the electromagnetic coil, a member covering the other side surface of the electromagnetic coil in the axial direction, and a member covering the outer peripheral surface of the electromagnetic coil must be joined by welding or the like. For this reason, the structure of the core and the manufacturing process are complicated, and the manufacturing cost is increased.

また、アクチュエータとして電磁石を有するディファレンシャル装置では、電磁石の電磁コイルへの給電のために、電磁コイル及びコアを回り止めする必要がある。特許文献1では、コアの回り止め部材が不図示とされているが、上記のように構成されたコアにさらに回り止め部材を固定するとすれば、その構造がより複雑化してしまう。 Further, in a differential device having an electromagnet as an actuator, it is necessary to prevent the electromagnetic coil and the core from rotating in order to feed power to the electromagnetic coil of the electromagnet. In Patent Document 1, the detent member for the core is not shown, but if the detent member is further fixed to the core configured as described above, its structure becomes more complicated.

そこで、本発明は、通電により磁束を発生させる磁束発生部を保持すると共に回り止めする保持部を簡素に構成することができ、製造コストを抑制することが可能な駆動力断続装置及び差動制限装置を提供することを目的とする。 Therefore, according to the present invention, a holding portion that holds a magnetic flux generating portion that generates a magnetic flux when energized and that prevents rotation can be simply configured, and a driving force interrupting device and a differential limiting device that can suppress manufacturing costs. The purpose is to provide a device.

本発明は、上記の目的を達成するため、ケース部材に収容され、共通の回転軸線を中心として相対回転可能に配置された第1回転部材と第2回転部材との間の駆動力伝達を断続する駆動力断続装置であって、前記第1回転部材との相対回転が規制されると共に、前記第2回転部材に噛み合う噛み合い歯を有し、前記噛み合い歯が前記第2回転部材に噛み合う連結位置と前記噛み合い歯が前記第2回転部材に噛み合わない非連結位置との間を軸方向に移動可能な断続部材と、前記断続部材を軸方向に移動させる移動機構とを備え、前記移動機構は、通電により磁束を発生させるコイルを有する環状の磁束発生部と、前記磁束発生部を保持する保持部と、前記断続部材と共に軸方向に移動する移動部材とを有し、前記移動部材は、前記磁束の磁路を構成して前記磁束発生部と軸方向に対向する側板部を有し、前記側板部に軸方向の貫通孔が形成され、前記保持部は、前記移動部材と共に前記磁束発生部の磁束の磁路を構成する軟磁性材料からなるヨークと、前記ヨークを前記ケース部材に対して回り止めする回り止め部材とを有し、前記回り止め部材は、前記ヨークに固定された固定部と、前記固定部から軸方向に延在して前記移動部材の前記貫通孔に挿通され、前記ケース部材に設けられた係止部に係止されて前記ヨークの前記ケース部材に対する回転を規制する延在部と、前記移動部材の前記側板部よりも前記延在部の先端側に設けられた爪部とを有し、前記移動部材が前記延在部の前記先端側に移動したとき、前記側板部が前記爪部に当接することで、前記移動部材の前記ヨークからの離脱が抑止される、駆動力断続装置を提供する。 In order to achieve the above object, the present invention intermittently transmits driving force between a first rotating member and a second rotating member that are housed in a case member and are arranged to be relatively rotatable about a common rotation axis. And a connecting position at which the meshing tooth meshes with the second rotating member while the relative rotation with the first rotating member is regulated, and the meshing tooth meshes with the second rotating member. And a disengagement member that is movable in the axial direction between the non-coupling position where the meshing teeth do not mesh with the second rotating member, and a moving mechanism that moves the discontinuous member in the axial direction. An annular magnetic flux generating portion having a coil that generates magnetic flux by energization, a holding portion that holds the magnetic flux generating portion, and a moving member that moves in the axial direction together with the interrupting member, the moving member is the magnetic flux. Of the magnetic flux generating portion and the side plate portion axially opposed to the magnetic flux generating portion constituting the magnetic path of, the through hole in the axial direction is formed, the holding portion, together with the moving member of the magnetic flux generating portion. A yoke made of a soft magnetic material that forms a magnetic path of a magnetic flux, and a detent member that detents the yoke with respect to the case member. The detent member includes a fixing portion fixed to the yoke. An extension extending in the axial direction from the fixed portion, inserted into the through hole of the moving member, and locked by a locking portion provided on the case member to restrict rotation of the yoke with respect to the case member. The side plate when the moving member moves to the tip side of the extending part, and the claw part is provided on the tip side of the extending part with respect to the side plate part of the moving member. Provided is a drive force connecting/disconnecting device, in which the moving member is prevented from being separated from the yoke when the portion contacts the claw portion.

また、本発明は、上記の目的を達成するため、ケース部材と、前記ケース部材に収容され、共通の回転軸線を中心として相対回転可能に配置された第1乃至第3回転部材と、前記第1回転部材との相対回転が規制されると共に、前記第2回転部材に噛み合う噛み合い歯を有し、前記噛み合い歯が前記第2回転部材に噛み合う連結位置と前記噛み合い歯が前記第2回転部材に噛み合わない非連結位置との間を軸方向に移動可能な断続部材と、前記断続部材を軸方向に移動させる移動機構とを備え、前記断続部材の前記噛み合い歯が前記第2回転部材に噛み合わない状態で、前記第1回転部材に入力された駆動力が前記第2回転部材及び前記第3回転部材に差動を許容して配分され、前記断続部材の前記噛み合い歯が前記第2回転部材に噛み合うことにより、前記第1回転部材と前記第2回転部材及び前記第3回転部材との差動が制限される差動制限装置であって、前記移動機構は、通電により磁束を発生させるコイルを有する環状の磁束発生部と、前記磁束発生部を保持する保持部と、前記断続部材と共に軸方向に移動する移動部材とを有し、前記移動部材は、前記磁束の磁路を構成して前記磁束発生部と軸方向に対向する側板部を有し、前記側板部に軸方向の貫通孔が形成され、前記保持部は、前記移動部材と共に前記磁束発生部の磁束の磁路を構成する軟磁性材料からなるヨークと、前記ヨークを前記ケース部材に対して回り止めする回り止め部材とを有し、前記回り止め部材は、前記ヨークに固定された固定部と、前記固定部から軸方向に延在して前記移動部材の前記貫通孔に挿通され、前記ケース部材に設けられた係止部に係止されて前記ヨークの前記ケース部材に対する回転を規制する延在部と、前記移動部材の前記側板部よりも前記延在部の先端側に設けられた爪部とを有し、前記移動部材が前記延在部の前記先端側に移動したとき、前記側板部が前記爪部に当接することで、前記移動部材の前記ヨークからの離脱が抑止される、差動制限装置を提供する。 In order to achieve the above object, the present invention provides a case member, first to third rotating members housed in the case member and arranged to be relatively rotatable about a common rotation axis. The rotation relative to the first rotating member is regulated, and the second rotating member has meshing teeth. The meshing teeth mesh with the second rotating member. The connecting position and the meshing teeth form the second rotating member. An interrupting member that is movable in the axial direction between a disengaged non-coupling position and a moving mechanism that moves the interrupting member in the axial direction are provided, and the meshing teeth of the interrupting member do not mesh with the second rotating member. In this state, the driving force input to the first rotating member is distributed to the second rotating member and the third rotating member while allowing the differential, and the meshing teeth of the intermittent member are distributed to the second rotating member. A differential limiting device in which the differential between the first rotating member, the second rotating member, and the third rotating member is limited by meshing with each other, wherein the moving mechanism includes a coil that generates a magnetic flux when energized. An annular magnetic flux generating portion having, a holding portion that holds the magnetic flux generating portion, and a moving member that moves in the axial direction together with the interrupting member, the moving member constitutes a magnetic path of the magnetic flux, and It has a side plate portion that axially opposes the magnetic flux generation portion, an axial through hole is formed in the side plate portion, and the holding portion, together with the moving member, forms a soft magnetic path of the magnetic flux of the magnetic flux generation portion. It has a yoke made of a magnetic material and a rotation stopping member for preventing the yoke from rotating with respect to the case member, and the rotation stopping member includes a fixing portion fixed to the yoke and an axial direction from the fixing portion. An extending portion that extends and is inserted into the through hole of the moving member, is locked by a locking portion provided on the case member, and restricts rotation of the yoke with respect to the case member; A claw portion provided on the tip side of the extending portion with respect to the side plate portion, and the side plate portion abuts the claw portion when the moving member moves to the tip side of the extending portion. Thus, the differential limiting device is provided in which the separation of the moving member from the yoke is suppressed.

本発明に係る駆動力断続装置及び差動制限装置によれば、通電により磁束を発生させる磁束発生部を保持すると共に回り止めする保持部を簡素に構成することができ、製造コストを抑制することが可能となる。 According to the driving force interrupting device and the differential limiting device according to the present invention, it is possible to simply configure the holding unit that holds the magnetic flux generating unit that generates the magnetic flux by energization and that prevents the magnetic flux generating unit from being rotated, thereby suppressing the manufacturing cost. Is possible.

本発明の第1の実施の形態に係る差動制限装置の構成を示す断面図である。It is sectional drawing which shows the structure of the limited slip differential device which concerns on the 1st Embodiment of this invention. 差動制限装置の分解斜視図である。It is an exploded perspective view of a differential limiting device. 差動制限装置のデフケース内部の構造を示す分解斜視図である。It is an exploded perspective view showing the structure inside the differential case of a differential limiting device. (a)及び(b)は、差動制限装置の一部を拡大して示す断面図である。(A) And (b) is sectional drawing which expands and shows a part of limited slip differential device. (a)は、回り止め部材及びその周辺を示す図1の部分拡大図である。(b)は、デフキャリアの係止部をデフケースの径方向から見た状態を示す構成図である。FIG. 1A is a partially enlarged view of FIG. 1 showing a detent member and its periphery. (B) is a block diagram showing a state in which the engaging portion of the differential carrier is viewed from the radial direction of the differential case. 回り止め部材の周方向の一部、回り止め部材の固定部が嵌合されるヨークの円筒部の一部、及びプランジャの一部を拡大して示す斜視図である。It is a perspective view which expands and shows a part of circumferential direction of a rotation stop member, a part of cylinder part of a yoke with which a fixed part of a rotation stop member is fitted, and a part of plunger. (a)及び(b)は、断続部材を示す斜視図である。(A) And (b) is a perspective view which shows an intermittent member. (a)〜(c)は、カム機構の動作を、断続部材、第1ケース部材の底部、及び第1サイドギヤの環状壁部の周方向断面で模式的に示す説明図である。(A)-(c) is explanatory drawing which shows operation|movement of a cam mechanism typically by the circumferential direction cross section of an intermittent member, the bottom part of a 1st case member, and the annular wall part of a 1st side gear. ポジションセンサの構成例を模式的に示す模式図である。It is a schematic diagram which shows the structural example of a position sensor typically. 本発明の第2の実施の形態に係る差動制限装置の一部を拡大して示す断面図である。It is sectional drawing which expands and shows a part of differential limitation apparatus which concerns on the 2nd Embodiment of this invention. 本発明の第3の実施の形態に係る差動制限装置の分解斜視図である。It is a disassembled perspective view of the differential limiting device which concerns on the 3rd Embodiment of this invention.

[第1の実施の形態]
本発明の第1実施の形態について、図1乃至図9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。
[First Embodiment]
A first embodiment of the present invention will be described with reference to FIGS. 1 to 9. Note that the embodiments described below are shown as preferred specific examples for carrying out the present invention, and some parts specifically exemplify various technically preferable technical matters. The technical scope of the present invention is not limited to this specific embodiment.

図1は、本発明の実施の形態に係る差動制限装置の構成例を示す断面図である。図2は、差動制限装置の分解斜視図である。図3は、差動制限装置のデフケース内部の構造を示す分解斜視図である。図4(a)及び(b)は、差動制限装置の一部を拡大して示す断面図である。 FIG. 1 is a sectional view showing a configuration example of a differential limiting device according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the differential limiting device. FIG. 3 is an exploded perspective view showing the internal structure of the differential case of the differential limiting device. 4A and 4B are sectional views showing a part of the differential limiting device in an enlarged manner.

この差動制限装置1は、エンジンや電動モータからなる車両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制限装置1は、例えば駆動源の駆動力を左右の車輪に配分するディファレンシャル装置として用いられ、入力された駆動力を一対の出力軸としての左右のドライブシャフトに配分する。 The differential limiting device 1 is used to allow a differential of a driving force of a driving source of a vehicle including an engine and an electric motor to be distributed to a pair of output shafts. More specifically, the limited slip differential device 1 according to the present embodiment is used, for example, as a differential device that distributes the driving force of a driving source to the left and right wheels, and the input driving force is used as a pair of output shafts. Distribute to the left and right drive shafts.

差動制限装置1は、ケース部材としてのデフキャリア100と、デフキャリア100に支持されて回転するデフケース2と、デフケース2に収容された第1サイドギヤ31及び第2サイドギヤ32と、第1ピニオンギヤ41及び第2ピニオンギヤ42を互いに噛み合せてなる複数(本実施の形態では5組)のピニオンギヤ組40と、デフケース2と第1サイドギヤ31との間の駆動力伝達を断続することが可能な断続部材5と、断続部材5を移動させる移動機構10と、移動機構10の動作状態を示す電気信号を出力するポジションセンサ90とを備える。断続部材5、移動機構10、及びポジションセンサ90は、デフケース2と第1サイドギヤ31との間の駆動力伝達を断続する駆動力断続装置11を構成する。駆動力断続装置11は、コントローラ9によって制御される。 The differential limiting device 1 includes a differential carrier 100 as a case member, a differential case 2 supported by the differential carrier 100 to rotate, a first side gear 31 and a second side gear 32 housed in the differential case 2, and a first pinion gear 41. And a plurality of (five in the present embodiment) pinion gear groups 40 in which the second pinion gears 42 are meshed with each other, and an interrupting member 5 capable of interrupting the transmission of the driving force between the differential case 2 and the first side gear 31. And a moving mechanism 10 that moves the interrupting member 5, and a position sensor 90 that outputs an electric signal indicating the operating state of the moving mechanism 10. The interrupting member 5, the moving mechanism 10, and the position sensor 90 configure a driving force interrupting device 11 that interrupts the transmission of the driving force between the differential case 2 and the first side gear 31. The driving force connecting/disconnecting device 11 is controlled by the controller 9.

第1サイドギヤ31及び第2サイドギヤ32は筒状であり、第1サイドギヤ31の内周面には一方の出力軸が相対回転不能に連結されるスプライン嵌合部310が形成され、第2サイドギヤ32の内周面には他方の出力軸が相対回転不能に連結されるスプライン嵌合部320が形成されている。 The first side gear 31 and the second side gear 32 have a tubular shape, and a spline fitting portion 310 to which one output shaft is relatively non-rotatably coupled is formed on the inner peripheral surface of the first side gear 31. A spline fitting portion 320, to which the other output shaft is connected such that the other output shaft cannot relatively rotate, is formed on the inner peripheral surface of the.

デフケース2は、車体に固定されたデフキャリア100に収容され、一対の軸受101,102を介して回転可能に支持されている。デフキャリア100には、図1に示すように、ポジションセンサ90を取り付けるための取付孔100aが設けられている。また、デフキャリア100には、ギヤの潤滑に適した粘度のギヤオイルが封入され、差動制限装置1はこのギヤオイルによる潤滑環境下で使用される。 The differential case 2 is housed in a differential carrier 100 fixed to the vehicle body, and is rotatably supported via a pair of bearings 101 and 102. As shown in FIG. 1, the differential carrier 100 is provided with a mounting hole 100a for mounting the position sensor 90. Further, the differential carrier 100 is filled with gear oil having a viscosity suitable for lubricating the gear, and the differential limiting device 1 is used in a lubricating environment with this gear oil.

デフケース2、第1サイドギヤ31、及び第2サイドギヤ32は、共通の回転軸線Oを中心として、互いに相対回転可能に配置されている。以下、回転軸線Oに平行な方向を軸方向という。 The differential case 2, the first side gear 31, and the second side gear 32 are arranged so as to be rotatable relative to each other about a common rotation axis O. Hereinafter, a direction parallel to the rotation axis O will be referred to as an axial direction.

デフケース2には、各ピニオンギヤ組40の第1ピニオンギヤ41及び第2ピニオンギヤ42を回転可能に保持する複数の保持孔20が形成されている。第1ピニオンギヤ41及び第2ピニオンギヤ42は、回転軸線Oを中心として公転すると共に、それぞれの中心軸を回転軸として保持孔20内で自転可能である。 The differential case 2 is formed with a plurality of holding holes 20 for rotatably holding the first pinion gear 41 and the second pinion gear 42 of each pinion gear set 40. The first pinion gear 41 and the second pinion gear 42 revolve around the rotation axis O and can rotate in the holding hole 20 with their respective central axes as rotation axes.

第1サイドギヤ31及び第2サイドギヤ32は、共通の外径を有し、外周面に複数の斜歯からなる歯車部311,321がそれぞれ形成されている。第1サイドギヤ31と第2サイドギヤ32との間には、センタワッシャ121が配置されている。また、第1サイドギヤ31の側方には第1サイドワッシャ122が配置され、第2サイドギヤ32の側方には第2サイドワッシャ123が配置されている。 The first side gear 31 and the second side gear 32 have a common outer diameter, and gear portions 311 and 321 each having a plurality of beveled teeth are formed on the outer peripheral surface thereof. A center washer 121 is arranged between the first side gear 31 and the second side gear 32. A first side washer 122 is arranged beside the first side gear 31, and a second side washer 123 is arranged beside the second side gear 32.

第1ピニオンギヤ41は、長歯車部411と、短歯車部412と、長歯車部411と短歯車部412とを軸方向に連結する連結部413とを一体に有している。同様に、第2ピニオンギヤ42は、長歯車部421と、短歯車部422と、長歯車部421と短歯車部422とを軸方向に連結する連結部423とを一体に有している。 The first pinion gear 41 integrally includes a long gear portion 411, a short gear portion 412, and a connecting portion 413 that axially connects the long gear portion 411 and the short gear portion 412. Similarly, the second pinion gear 42 integrally has a long gear portion 421, a short gear portion 422, and a connecting portion 423 that axially connects the long gear portion 421 and the short gear portion 422.

第1ピニオンギヤ41は、長歯車部411が第1サイドギヤ31の歯車部311及び第2ピニオンギヤ42の短歯車部422と噛み合い、短歯車部412が第2ピニオンギヤ42の長歯車部421と噛み合っている。第2ピニオンギヤ42は、長歯車部421が第2サイドギヤ32の歯車部321及び第1ピニオンギヤ41の短歯車部412と噛み合い、短歯車部422が第1ピニオンギヤ41の長歯車部411と噛み合っている。なお、図3では、これら各歯車部の斜歯の図示を省略している。 In the first pinion gear 41, the long gear portion 411 meshes with the gear portion 311 of the first side gear 31 and the short gear portion 422 of the second pinion gear 42, and the short gear portion 412 meshes with the long gear portion 421 of the second pinion gear 42. .. In the second pinion gear 42, the long gear portion 421 meshes with the gear portion 321 of the second side gear 32 and the short gear portion 412 of the first pinion gear 41, and the short gear portion 422 meshes with the long gear portion 411 of the first pinion gear 41. .. In addition, in FIG. 3, the illustration of the helical teeth of each of these gears is omitted.

第1サイドギヤ31及び第2サイドギヤ32が同じ速度で回転する場合、第1ピニオンギヤ41及び第2ピニオンギヤ42は、保持孔20内で自転することなくデフケース2と共に公転する。また、例えば車両の旋回時等において第1サイドギヤ31及び第2サイドギヤ32の回転速度が異なると、第1ピニオンギヤ41及び第2ピニオンギヤ42が保持孔20内で自転しながら公転する。これにより、デフケース2に入力された駆動力が第1サイドギヤ31及び第2サイドギヤ32に差動を許容して配分される。なお、デフケース2が本発明の「第1回転部材」に、第1サイドギヤ31が本発明の「第2回転部材」に、第2サイドギヤ32が本発明の「第3回転部材」に、それぞれ相当する。 When the first side gear 31 and the second side gear 32 rotate at the same speed, the first pinion gear 41 and the second pinion gear 42 revolve with the differential case 2 in the holding hole 20 without rotating. Further, for example, when the rotation speeds of the first side gear 31 and the second side gear 32 are different when the vehicle turns, the first pinion gear 41 and the second pinion gear 42 revolve in the holding hole 20 while rotating. As a result, the driving force input to the differential case 2 is distributed to the first side gear 31 and the second side gear 32 while allowing the differential. The differential case 2 corresponds to the “first rotating member” of the present invention, the first side gear 31 corresponds to the “second rotating member” of the present invention, and the second side gear 32 corresponds to the “third rotating member” of the present invention. To do.

断続部材5は、デフケース2と第1サイドギヤ31とを相対回転不能に連結する連結位置、及びデフケース2と第1サイドギヤ31との相対回転を許容する非連結位置との間を軸方向に移動可能である。図4(a)では断続部材5が非連結位置にある状態を示し、図4(b)では断続部材5が連結位置にある状態を示している。 The connecting/disconnecting member 5 is axially movable between a connecting position that connects the differential case 2 and the first side gear 31 in a non-rotatable manner, and a non-connecting position that allows relative rotation of the differential case 2 and the first side gear 31. Is. FIG. 4A shows a state where the interrupting member 5 is in the non-connecting position, and FIG. 4B shows a state where the interrupting member 5 is in the connecting position.

断続部材5が連結位置にあるとき、デフケース2と第1サイドギヤ31との差動が規制されることにより、第1ピニオンギヤ41及び第2ピニオンギヤ42が自転不能となり、デフケース2と第2サイドギヤ32との差動も規制される。断続部材5は、第1サイドギヤ31との間に配置された復帰バネ13によって、非連結位置に向かって付勢されている。 When the connecting/disconnecting member 5 is at the connecting position, the differential between the differential case 2 and the first side gear 31 is restricted, so that the first pinion gear 41 and the second pinion gear 42 are unable to rotate, and the differential case 2 and the second side gear 32 The differential of is also regulated. The intermittent member 5 is biased toward the non-coupling position by the return spring 13 arranged between the intermittent member 5 and the first side gear 31.

移動機構10は、通電により磁束を発生させる環状の磁束発生部60と、磁束発生部60を保持する保持部6と、磁束発生部60の通電により発生する磁束の磁路G(図4(b)参照)を構成し、断続部材5と共に軸方向に移動する移動部材としてのプランジャ7と、断続部材5とプランジャ7とを連結する連結部材8とを有している。保持部6は、磁束発生部60をデフケース2及びデフキャリア100に対して保持している。 The moving mechanism 10 includes an annular magnetic flux generator 60 that generates a magnetic flux when energized, a holder 6 that holds the magnetic flux generator 60, and a magnetic path G of a magnetic flux that is generated when the magnetic flux generator 60 is energized (see FIG. )), and has a plunger 7 as a moving member that moves in the axial direction together with the interrupting member 5, and a connecting member 8 that connects the interrupting member 5 and the plunger 7. The holder 6 holds the magnetic flux generator 60 with respect to the differential case 2 and the differential carrier 100.

磁束発生部60は、エナメル線等の導線を環状に巻き回してなるコイル601と、コイル601をモールドするモールド樹脂部602とを有する電磁石からなる。磁束発生部60は、断面矩形状であり、その中心部にコイル601が配置され、外周面60a(モールド樹脂部602の外周面602a)を含む表面はモールド樹脂部602によって形成されている。また、磁束発生部60には、図2に示すように、軸方向の一端面から突出するボス部603が設けられ、このボス部603からコイル601に励磁電流を供給する電線604が導出されている。コントローラ9は、電線604を介して磁束発生部60に励磁電流を供給し、磁路Gに磁束を発生させる。 The magnetic flux generating unit 60 is an electromagnet having a coil 601 formed by winding a conducting wire such as an enamel wire in an annular shape, and a mold resin portion 602 that molds the coil 601. The magnetic flux generating section 60 has a rectangular cross section, a coil 601 is arranged in the center thereof, and the surface including the outer peripheral surface 60a (the outer peripheral surface 602a of the mold resin section 602) is formed by the mold resin section 602. Further, as shown in FIG. 2, the magnetic flux generating section 60 is provided with a boss portion 603 protruding from one end face in the axial direction, and an electric wire 604 for supplying an exciting current to the coil 601 is led out from the boss portion 603. There is. The controller 9 supplies an exciting current to the magnetic flux generator 60 via the electric wire 604 to generate a magnetic flux in the magnetic path G.

保持部6は、鉄系金属等の軟磁性材料からなるヨーク61と、ヨーク61をデフキャリア100に対して回り止めする回り止め部材62とを備えている。ヨーク61は、磁束発生部60の磁束の磁路Gを構成する。 The holding portion 6 includes a yoke 61 made of a soft magnetic material such as iron-based metal, and a detent member 62 for detenting the yoke 61 with respect to the differential carrier 100. The yoke 61 constitutes the magnetic path G of the magnetic flux of the magnetic flux generator 60.

ヨーク61は、図4に拡大して示すように、磁束発生部60の内周面60bを内側から覆う円筒部611と、円筒部611の軸方向の一端部から外方に突出して磁束発生部60の軸方向端面60cを覆う鍔部612とを一体に有している。円筒部611は、磁束発生部60と径方向に向かい合う。円筒部611の内径は、円筒部611の内周面611aに対向する部分のデフケース2の外径よりも僅かに大きく形成されている。 As shown in the enlarged view of FIG. 4, the yoke 61 has a cylindrical portion 611 that covers the inner peripheral surface 60b of the magnetic flux generating portion 60 from the inside, and a magnetic flux generating portion that projects outward from one axial end of the cylindrical portion 611. It has integrally with the collar part 612 which covers the axial end surface 60c of 60. The cylindrical portion 611 faces the magnetic flux generation portion 60 in the radial direction. The inner diameter of the cylindrical portion 611 is formed to be slightly larger than the outer diameter of the differential case 2 in the portion facing the inner peripheral surface 611a of the cylindrical portion 611.

円筒部611の内周面611aには、圧入ピン141によってデフケース2に固定された非磁性材料からなる複数(本実施の形態では3つ)のプレート142が嵌合する環状凹部611bが形成されている。ヨーク61は、環状凹部611bにプレート142が嵌合することで、デフケース2に対する軸方向移動が規制されている。環状凹部611bの軸方向幅は、デフケース2が回転する際にヨーク61との間で回転抵抗が発生しないよう、プレート142の厚みよりも大きく形成されている。 The inner peripheral surface 611a of the cylindrical portion 611 is formed with an annular recess 611b into which a plurality (three in the present embodiment) of plates 142 made of a non-magnetic material and fixed to the differential case 2 by press-fitting pins 141 are fitted. There is. The movement of the yoke 61 in the axial direction with respect to the differential case 2 is restricted by fitting the plate 142 into the annular recess 611b. The axial width of the annular recess 611b is formed to be larger than the thickness of the plate 142 so that rotation resistance does not occur between the annular recess 611b and the yoke 61 when the differential case 2 rotates.

ヨーク61の円筒部611における鍔部612とは反対側の端部には、回り止め部材62が例えば溶接によって固定されている。回り止め部材62は、オーステナイト系ステンレス等の非磁性材料からなり、ヨーク61に固定された固定部621と、固定部621から軸方向に延在してデフキャリア100に設けられた係止部103(図1参照)に係止される延在部622と、延在部622の先端から鋭角に折り返された爪部623とを一体に有している。固定部621は、ヨーク61の円筒部611に嵌合されてヨーク61に固定されている。延在部622は、係止部103に係止されてヨーク61のデフキャリア100に対する回転を規制する。 At the end portion of the cylindrical portion 611 of the yoke 61 on the opposite side of the flange portion 612, a rotation stopping member 62 is fixed by, for example, welding. The anti-rotation member 62 is made of a non-magnetic material such as austenitic stainless steel, and has a fixed portion 621 fixed to the yoke 61, and a locking portion 103 provided on the differential carrier 100 extending in the axial direction from the fixed portion 621. (See FIG. 1) An extension portion 622 that is locked to the extension portion 622 and a claw portion 623 that is folded back at an acute angle from the tip of the extension portion 622 are integrally provided. The fixed portion 621 is fitted to the cylindrical portion 611 of the yoke 61 and fixed to the yoke 61. The extending portion 622 is locked by the locking portion 103 and restricts the rotation of the yoke 61 with respect to the differential carrier 100.

回り止め部材62の固定部621は、ヨーク61の円筒部611の周方向に沿って延びる円環状であり、ヨーク61の円筒部611に対する磁束発生部60の軸方向移動(鍔部612とは反対側への移動)を規制する。磁束発生部60は、その軸方向端面60d(ヨーク61の鍔部612に対向する軸方向端面60cとは反対側の端面)が固定部621に当接することにより、ヨーク61に対する軸方向移動が規制される。 The fixed portion 621 of the rotation stopping member 62 has an annular shape extending along the circumferential direction of the cylindrical portion 611 of the yoke 61, and moves the magnetic flux generation portion 60 in the axial direction with respect to the cylindrical portion 611 of the yoke 61 (opposite to the flange portion 612). Movement to the side) is regulated. The magnetic flux generator 60 has its axial end face 60d (the end face on the opposite side of the axial end face 60c of the yoke 61 facing the flange portion 612) abutting against the fixed portion 621, whereby the axial movement of the magnetic flux generator 60 with respect to the yoke 61 is restricted. To be done.

回り止め部材62は、図2に示すように、複数(本実施の形態では2つ)の延在部622及び爪部623を有している。2つの延在部622は、回転軸線Oを挟む対称な位置に設けられ、そのそれぞれに対応して爪部623が設けられている。ただし、回り止め部材62が有する延在部622の数は、2つに限らず3つ以上であってもよい。本実施の形態では、爪部623が延在部622の先端から固定部621の径方向における外側に折り返されている。デフキャリア100には、2つの延在部622をそれぞれ係止する2つの係止部103が設けられ、図1ではこのうち一方の係止部103を図示している。 As shown in FIG. 2, the rotation preventing member 62 has a plurality of (two in the present embodiment) extending portions 622 and claw portions 623. The two extending portions 622 are provided at symmetrical positions sandwiching the rotation axis O, and the claw portions 623 are provided corresponding to each of them. However, the number of the extending portions 622 included in the rotation stopping member 62 is not limited to two and may be three or more. In the present embodiment, the claw portion 623 is folded back from the tip of the extending portion 622 to the outside of the fixed portion 621 in the radial direction. The differential carrier 100 is provided with two locking portions 103 that lock the two extending portions 622, respectively, and one locking portion 103 is shown in FIG.

プランジャ7は、低炭素鋼等の軟磁性材料からなり、磁束発生部60の外周に配置される円筒部71と、磁束発生部60と軸方向に対向する環状の側板部72とを一体に有している。ヨーク61は、プランジャ7の円筒部71及び側板部72と共に磁束発生部60の磁束の磁路Gを構成する。円筒部71は、磁束発生部60の全体を外周側から覆う円筒状である。側板部72は、円筒部71の軸方向の一端部から内方に突出している。側板部72は、磁束発生部60の軸方向端面60d(ヨーク61の鍔部612に対向する軸方向端面60cとは反対側の端面)、回り止め部材62の固定部621、及びヨーク61における円筒部611の軸方向端面611cと軸方向に対向する。 The plunger 7 is made of a soft magnetic material such as low carbon steel, and integrally includes a cylindrical portion 71 arranged on the outer circumference of the magnetic flux generating portion 60 and an annular side plate portion 72 axially opposed to the magnetic flux generating portion 60. is doing. The yoke 61 constitutes the magnetic path G of the magnetic flux of the magnetic flux generation unit 60 together with the cylindrical portion 71 of the plunger 7 and the side plate portion 72. The cylindrical portion 71 has a cylindrical shape that covers the entire magnetic flux generation unit 60 from the outer peripheral side. The side plate portion 72 projects inward from one axial end portion of the cylindrical portion 71. The side plate portion 72 includes an axial end surface 60d of the magnetic flux generation portion 60 (an end surface opposite to the axial end surface 60c facing the flange portion 612 of the yoke 61), a fixed portion 621 of the rotation stopping member 62, and a cylinder of the yoke 61. It axially faces the axial end surface 611c of the portion 611.

プランジャ7は、円筒部71の内周面71aがモールド樹脂部602の外周面602aに接触して磁束発生部60に支持されている。プランジャ7が軸方向に移動する際には、円筒部71の内周面71aがモールド樹脂部602の外周面602aを摺動する。また、円筒部71の内周面71aは、ヨーク61の鍔部612の外周側の端面612aと径方向に対向する。 In the plunger 7, the inner peripheral surface 71 a of the cylindrical portion 71 contacts the outer peripheral surface 602 a of the mold resin portion 602 and is supported by the magnetic flux generating portion 60. When the plunger 7 moves in the axial direction, the inner peripheral surface 71a of the cylindrical portion 71 slides on the outer peripheral surface 602a of the mold resin portion 602. The inner peripheral surface 71a of the cylindrical portion 71 radially faces the outer peripheral end surface 612a of the collar portion 612 of the yoke 61.

側板部72には、前述のギヤオイルを流動される複数(図2に示す例では10個)の油孔720、磁束発生部60のボス部603を挿通させる第1貫通孔721、及び回り止め部材62の2つ延在部622をそれぞれ挿通させる2つの第2貫通孔722が形成されている。油孔720、第1貫通孔721、及び第2貫通孔722は、側板部72を軸方向に貫通している。また、側板部72の内周側の端部は、連結部材8が当接する当接部として形成されている。 In the side plate portion 72, a plurality of (10 in the example shown in FIG. 2) oil holes 720 through which the gear oil flows, a first through hole 721 through which the boss portion 603 of the magnetic flux generation portion 60 is inserted, and a rotation preventing member. Two second through holes 722, through which the two extending portions 622 of 62 are respectively inserted, are formed. The oil hole 720, the first through hole 721, and the second through hole 722 penetrate the side plate portion 72 in the axial direction. The inner peripheral end of the side plate portion 72 is formed as an abutting portion with which the connecting member 8 abuts.

回り止め部材62の延在部622は、第2貫通孔722に挿通されることにより、ヨーク61に対するプランジャ7の回転を規制している。爪部623は、延在部622と共にプランジャ7の第2貫通孔722を通過可能な弾性を有している。より具体的には、延在部622及び爪部623が側板部72の第2貫通孔722に挿通されるとき、爪部623は延在部622と重なるように弾性変形して第2貫通孔722を通り抜ける。 The extending portion 622 of the rotation stopping member 62 is inserted into the second through hole 722 to restrict the rotation of the plunger 7 with respect to the yoke 61. The claw portion 623 has elasticity so that it can pass through the second through hole 722 of the plunger 7 together with the extending portion 622. More specifically, when the extending part 622 and the claw part 623 are inserted into the second through hole 722 of the side plate part 72, the claw part 623 is elastically deformed so as to overlap with the extending part 622, and the second through hole is formed. Pass through 722.

また、爪部623は、第2貫通孔722を通り抜けた後に弾性復帰して折り返された先端部が延在部622から離間し、その少なくとも一部がプランジャ7の第2貫通孔722よりも径方向外側に位置する。これにより、プランジャ7が延在部622の先端側に移動したとき、側板部72が回り止め部材62の爪部623に当接することで、プランジャ7のヨーク61からの離脱が抑止される。 In addition, the claw portion 623 has a distal end portion that is elastically restored and folded back after passing through the second through hole 722 and is separated from the extending portion 622, and at least a part thereof has a diameter larger than that of the second through hole 722 of the plunger 7. Located outside the direction. As a result, when the plunger 7 moves to the tip side of the extending portion 622, the side plate portion 72 comes into contact with the claw portion 623 of the rotation stopping member 62, and thus the plunger 7 is prevented from coming off the yoke 61.

連結部材8は、例えばオーステナイト系ステンレス等の非磁性材料からなる板材をプレス成形してなり、プランジャ7の側板部72に当接するリング状の環状部81と、環状部81から軸方向に延びる3つの延在部82と、延在部82の先端部から内方に突出して断続部材5に固定される固定部83とを一体に有している。連結部材8は、車両走行時に環状部81がプランジャ7の側板部72を摺動してデフケース2と共に回転する。固定部83には、断続部材5との固定のための圧入ピン15を挿通させる挿通孔830が形成されている。 The connecting member 8 is formed by press-molding a plate material made of a non-magnetic material such as austenitic stainless steel, and has a ring-shaped annular portion 81 that comes into contact with the side plate portion 72 of the plunger 7, and an axially extending portion 3 from the annular portion 81. The two extending portions 82 and the fixing portion 83 that protrudes inward from the tip of the extending portion 82 and is fixed to the interrupting member 5 are integrally provided. In the connecting member 8, the annular portion 81 slides on the side plate portion 72 of the plunger 7 and rotates together with the differential case 2 when the vehicle travels. The fixing portion 83 is formed with an insertion hole 830 into which the press-fitting pin 15 for fixing the intermittent member 5 is inserted.

デフケース2は、複数のネジ200によって互いに固定された第1ケース部材21及び第2ケース部材22を有している。第1ケース部材21は、軸受101によってデフキャリア100に回転可能に支持され、第2ケース部材22は、軸受102によってデフキャリア100に回転可能に支持されている。 The differential case 2 has a first case member 21 and a second case member 22 fixed to each other by a plurality of screws 200. The first case member 21 is rotatably supported by the differential carrier 100 by a bearing 101, and the second case member 22 is rotatably supported by the differential carrier 100 by a bearing 102.

第1ケース部材21は、複数のピニオンギヤ組40を回転可能に保持する円筒状の円筒部211と、円筒部211の一端部から内方に延在する底部212と、第2ケース部材22に突き当てられるフランジ部213とを一体に有している。円筒部211と底部212との間の角部には、磁束発生部60が配置される環状凹部210が形成されている。 The first case member 21 projects into the second case member 22 and a cylindrical cylindrical portion 211 that rotatably holds the plurality of pinion gear sets 40, a bottom portion 212 that extends inward from one end of the cylindrical portion 211, and a second case member 22. It integrally has a flange portion 213 to be applied. An annular recess 210, in which the magnetic flux generator 60 is disposed, is formed at a corner between the cylindrical portion 211 and the bottom portion 212.

第1サイドギヤ31及び第2サイドギヤ32は、円筒部211の内側に配置されている。また、第1ケース部材21は、ヨーク61よりも透磁率が低い金属からなり、フランジ部213には図略のリングギヤが固定される。デフケース2は、リングギヤから伝達される駆動力により回転軸線Oを中心として回転する。 The first side gear 31 and the second side gear 32 are arranged inside the cylindrical portion 211. The first case member 21 is made of a metal whose magnetic permeability is lower than that of the yoke 61, and a ring gear (not shown) is fixed to the flange portion 213. The differential case 2 rotates about the rotation axis O by the driving force transmitted from the ring gear.

第1ケース部材21の底部212には、図2及び図3に示すように、連結部材8の延在部82及び固定部83が挿入される複数の挿通孔212aが形成されている。挿通孔212aは、底部212を軸方向に貫通している。また、挿通孔212aには、後述する断続部材5の突部53が挿入される。断続部材5は、突部53が挿通孔212aに挿入されることで、デフケース2との相対回転が規制される。本実施の形態では、3つの挿通孔212aが、底部212の周方向に沿って等間隔に形成されている。 As shown in FIGS. 2 and 3, the bottom portion 212 of the first case member 21 is formed with a plurality of insertion holes 212a into which the extending portions 82 and the fixing portions 83 of the connecting member 8 are inserted. The insertion hole 212a penetrates the bottom portion 212 in the axial direction. Further, the projection 53 of the disconnecting member 5 described later is inserted into the insertion hole 212a. The relative rotation of the intermittent member 5 with respect to the differential case 2 is restricted by inserting the protrusion 53 into the insertion hole 212a. In the present embodiment, the three insertion holes 212a are formed at equal intervals along the circumferential direction of the bottom portion 212.

図5(a)は、図1の部分拡大図であり、回り止め部材62の固定部621、延在部622、及び爪部623の断面を拡大して図示している。図5(b)は、デフキャリア100の係止部103をデフケース2の径方向から見た状態を示す構成図である。図6は、回り止め部材62の周方向の一部、回り止め部材62の固定部621が嵌合されるヨーク61の円筒部611の一部、及びプランジャ7の一部を拡大して示す斜視図である。 FIG. 5A is a partially enlarged view of FIG. 1, and shows enlarged cross sections of the fixing portion 621, the extending portion 622, and the claw portion 623 of the rotation stopping member 62. FIG. 5B is a configuration diagram showing a state in which the locking portion 103 of the differential carrier 100 is viewed from the radial direction of the differential case 2. FIG. 6 is an enlarged perspective view showing a part of the rotation preventing member 62 in the circumferential direction, a part of the cylindrical portion 611 of the yoke 61 into which the fixing portion 621 of the rotation preventing member 62 is fitted, and a part of the plunger 7. It is a figure.

図6に示すように、ヨーク61の円筒部611における鍔部612とは反対側の端部には、回り止め部材62の固定部621が嵌合される小径部611dと、小径部611dよりも外径が大きい大径部611eとが形成され、小径部611dの外周面と大径部611eの外周面との間には段差面611fが形成されている。回り止め部材62の固定部621は、その内周面621aと外周面621bのうち、内周面621aが小径部611dに外嵌される。また、固定部621は、軸方向の一側面が段差面611fに当接する。 As shown in FIG. 6, at the end portion of the cylindrical portion 611 of the yoke 61 on the opposite side of the flange portion 612, the small diameter portion 611d to which the fixing portion 621 of the rotation stopping member 62 is fitted, and the small diameter portion 611d. A large diameter portion 611e having a large outer diameter is formed, and a step surface 611f is formed between the outer peripheral surface of the small diameter portion 611d and the outer peripheral surface of the large diameter portion 611e. Of the inner peripheral surface 621a and the outer peripheral surface 621b, the inner peripheral surface 621a of the fixed portion 621 of the rotation stopping member 62 is externally fitted to the small diameter portion 611d. Further, one side surface of the fixing portion 621 in the axial direction abuts the step surface 611f.

大径部611eの外径は、回り止め部材62の固定部621の外径よりも小さく、固定部621は、その一部が大径部611eの外周面よりも外径方向に突出する。そして、固定部621は、この突出した部分の一側面が磁束発生部60の軸方向端面60dと軸方向に向かい合う。 The outer diameter of the large diameter portion 611e is smaller than the outer diameter of the fixed portion 621 of the rotation preventing member 62, and the fixed portion 621 has a part thereof protruding in the outer radial direction from the outer peripheral surface of the large diameter portion 611e. Then, in the fixing portion 621, one side surface of this protruding portion faces the axial end surface 60d of the magnetic flux generating portion 60 in the axial direction.

ヨーク61の小径部611dには、径方向内方に窪む窪部611gが形成されている。一方、回り止め部材62における固定部621の内径部には、ヨーク61の窪部611gに係合する突部621cが設けられている。回り止め部材62は、突部621cが窪部611gに係合することにより、ヨーク61の周方向に位置決めされる。 The small diameter portion 611d of the yoke 61 is formed with a recess 611g that is recessed radially inward. On the other hand, a protrusion 621c that engages with the recess 611g of the yoke 61 is provided on the inner diameter portion of the fixed portion 621 of the rotation stopping member 62. The rotation preventing member 62 is positioned in the circumferential direction of the yoke 61 by the protrusion 621c engaging with the recess 611g.

図5(b)に示すように、係止部103は、回転軸線Oを中心としてヨーク61が一方側に回転したときに回り止め部材62の延在部622に当接する第1係止部材104と、ヨーク61が他方側に回転したときに回り止め部材62の延在部622に当接する第2係止部材105とを有している。延在部622は、その先端部が第1係止部材104と第2係止部材105との間に位置している。第1係止部材104及び第2係止部材105は、ボルト106,107によってデフキャリア100の本体に固定されている。 As shown in FIG. 5B, the locking portion 103 contacts the extending portion 622 of the detent member 62 when the yoke 61 rotates to one side around the rotation axis O as the first locking member 104. And a second locking member 105 that comes into contact with the extending portion 622 of the rotation preventing member 62 when the yoke 61 rotates to the other side. The extending portion 622 has a tip portion located between the first locking member 104 and the second locking member 105. The first locking member 104 and the second locking member 105 are fixed to the main body of the differential carrier 100 by bolts 106 and 107.

磁束発生部60のコイル601に励磁電流が供給されると、図4(b)に示す磁路Gに磁束が発生し、プランジャ7の側板部72がヨーク61に吸引される。これにより、プランジャ7の円筒部71の内周面71aがモールド樹脂部602の外周面612aを摺動し、プランジャ7が軸方向に移動する。このプランジャ7の軸方向移動により、プランジャ7と連結部材8によって連結された断続部材5が非連結位置から連結位置に軸方向に移動する。 When an exciting current is supplied to the coil 601 of the magnetic flux generator 60, magnetic flux is generated in the magnetic path G shown in FIG. 4B, and the side plate 72 of the plunger 7 is attracted to the yoke 61. As a result, the inner peripheral surface 71a of the cylindrical portion 71 of the plunger 7 slides on the outer peripheral surface 612a of the mold resin portion 602, and the plunger 7 moves in the axial direction. By this axial movement of the plunger 7, the interrupting member 5 connected to the plunger 7 by the connecting member 8 moves from the non-connecting position to the connecting position in the axial direction.

図7(a)及び(b)は、断続部材5を示す斜視図である。断続部材5は、その最外径(最も外側の部分の直径)が、ヨーク61の内径よりも小さく、磁束発生部60の内側に配置されている。また、断続部材5は、一方の軸方向端面51aに複数の椀状凹部510が形成された円環板状の円板部51と、第1サイドギヤ31と軸方向に対向する円板部51の他方の軸方向端面51bに形成された噛み合い部52と、円板部51の一方の軸方向端面51aから軸方向に突出して形成された台形柱状の突部53とを一体に有している。 7A and 7B are perspective views showing the interrupting member 5. The outermost diameter (diameter of the outermost portion) of the interrupting member 5 is smaller than the inner diameter of the yoke 61, and is arranged inside the magnetic flux generating portion 60. Further, the interrupting member 5 includes an annular disc-shaped disc portion 51 in which a plurality of bowl-shaped recesses 510 are formed on one axial end surface 51 a, and a disc portion 51 axially opposed to the first side gear 31. It integrally includes a meshing portion 52 formed on the other axial end surface 51b and a trapezoidal columnar projection 53 formed by axially projecting from one axial end surface 51a of the disc portion 51.

円板部51の一方の軸方向端面51aは、第1ケース部材21の底部212と軸方向に対向する。突部53は、第1ケース部材21の底部212に形成された挿通孔212aに一部が挿入されている。噛み合い部52には、軸方向に突出する複数の噛み合い歯521が形成されている。複数の噛み合い歯521は、円板部51の他方の軸方向端面51bの外周側の一部に形成され、噛み合い部52よりも内側の軸方向端面51bは、復帰バネ13が当接して非連結位置への付勢力を受ける平坦な受け面として形成されている。 One axial end surface 51 a of the disc portion 51 axially faces the bottom portion 212 of the first case member 21. The protrusion 53 is partially inserted into an insertion hole 212 a formed in the bottom portion 212 of the first case member 21. The meshing portion 52 is formed with a plurality of meshing teeth 521 that project in the axial direction. The plurality of meshing teeth 521 are formed on a part of the outer peripheral side of the other axial end surface 51b of the disc portion 51, and the axial end surface 51b on the inner side of the meshing portion 52 is not connected by the return spring 13 contacting. It is formed as a flat receiving surface that receives the biasing force to the position.

第1サイドギヤ31には、図1に示すように、歯車部311よりも外周側に突出して設けられた環状壁部312に、断続部材5の複数の噛み合い歯521に噛み合う複数の噛み合い歯313が形成されている。 As shown in FIG. 1, in the first side gear 31, a plurality of meshing teeth 313 that mesh with the plurality of meshing teeth 521 of the interrupting member 5 are provided on an annular wall portion 312 that is provided so as to project more outward than the gear portion 311. Has been formed.

断続部材5は、連結部材8を介してプランジャ7に押圧されて連結位置に移動することで、噛み合い部52の複数の噛み合い歯521が第1サイドギヤ31の複数の噛み合い歯313に噛み合う。つまり、断続部材5と第1サイドギヤ31とは、断続部材5が第1サイドギヤ31側に移動したとき、複数の噛み合い歯521,313同士の噛み合いによって相対回転不能に連結される。一方、断続部材5が復帰バネ13の付勢力によって非連結位置に移動すると、噛み合い歯521,313同士の噛み合いが噛み合わなくなり、断続部材5と第1サイドギヤ31とが相対回転可能となる。 The intermittent member 5 is pressed by the plunger 7 via the connecting member 8 and moves to the connecting position, so that the plurality of meshing teeth 521 of the meshing portion 52 mesh with the plurality of meshing teeth 313 of the first side gear 31. That is, the interrupting member 5 and the first side gear 31 are relatively non-rotatably connected by the meshing of the plurality of meshing teeth 521 and 313 when the interrupting member 5 moves to the first side gear 31 side. On the other hand, when the interrupting member 5 is moved to the non-coupling position by the urging force of the return spring 13, the meshing teeth 521 and 313 are disengaged from each other, and the interrupting member 5 and the first side gear 31 are relatively rotatable.

第1ケース部材21は、断続部材5の突部53が周方向に係合する被係合部が、挿通孔212aによって形成されている。断続部材5の突部53は、挿通孔212aの内面212b(図2,3参照)に当接して第1ケース部材21からの駆動力を受ける当接面53aを有している。当接面53aは、突部53における周方向の端面である。突部53の当接面53a、及びこの当接面53aが当接する挿通孔212aの内面212bは、回転軸線Oと平行な平坦面である。断続部材5が第1ケース部材21からの駆動力を受けるとき、突部53の当接面53aは、挿通孔212aの内面212bに面接触する。 In the first case member 21, an engaged portion with which the projection 53 of the connecting/disconnecting member 5 engages in the circumferential direction is formed by the insertion hole 212a. The protrusion 53 of the interrupting member 5 has an abutment surface 53a that abuts the inner surface 212b (see FIGS. 2 and 3) of the insertion hole 212a and receives the driving force from the first case member 21. The contact surface 53a is an end surface of the protrusion 53 in the circumferential direction. The contact surface 53a of the protrusion 53 and the inner surface 212b of the insertion hole 212a with which the contact surface 53a abuts are flat surfaces parallel to the rotation axis O. When the interrupting member 5 receives the driving force from the first case member 21, the contact surface 53a of the protrusion 53 makes surface contact with the inner surface 212b of the insertion hole 212a.

また、突部53の先端面53bには、圧入ピン15が圧入される圧入孔531が形成されている。断続部材5は、連結部材8の固定部83に形成された挿通孔830を挿通した圧入ピン15が圧入孔531に圧入されることで、連結部材8と一体に軸方向移動するように固定される。なお、圧入ピン15に替えて、連結部材8の固定部83と断続部材5の突部5とをボルトによって締結してもよい。この場合、連結部材8の固定部83には、圧入孔531に替えてねじ穴が形成される。 Further, a press-fitting hole 531 into which the press-fitting pin 15 is press-fitted is formed on the tip surface 53b of the protrusion 53. The interrupting member 5 is fixed so that the press-fitting pin 15 inserted through the insertion hole 830 formed in the fixing portion 83 of the connecting member 8 is press-fitted into the press-fitting hole 531 to move axially integrally with the connecting member 8. It Instead of the press-fitting pin 15, the fixing portion 83 of the connecting member 8 and the protruding portion 5 of the interrupting member 5 may be fastened with bolts. In this case, a screw hole is formed in the fixing portion 83 of the connecting member 8 instead of the press-fitting hole 531.

椀状凹部510の内面510aは、第1ケース部材21との相対回転によって軸方向のカム推力を発生させるカム面として形成されている。換言すれば、断続部材5は、円板部51における第1ケース部材21の底部212との対向面(一方の軸方向端面51a)の一部がカム面として形成されている。 The inner surface 510a of the bowl-shaped recess 510 is formed as a cam surface that generates a cam thrust force in the axial direction by relative rotation with the first case member 21. In other words, in the interrupting member 5, a part of a surface (one axial end surface 51a) of the disc portion 51 facing the bottom portion 212 of the first case member 21 is formed as a cam surface.

図1に示すように、第1ケース部材21の底部212には、椀状凹部510の内面510aに当接する突起212cが軸方向に突出して設けられている。本実施の形態では、この突起212cが、底部212に固定された球体23によって形成されている。球体23は、その一部が底部212に設けられた軸方向の窪み212dに収容されて、第1ケース部材21に保持されている。ただし、突起212cを、底部212の一部として一体に形成してもよい。 As shown in FIG. 1, the bottom portion 212 of the first case member 21 is provided with a projection 212c that comes into contact with the inner surface 510a of the bowl-shaped recess 510 so as to project in the axial direction. In the present embodiment, this protrusion 212c is formed by the spherical body 23 fixed to the bottom portion 212. A part of the sphere 23 is housed in the axial recess 212 d provided in the bottom portion 212 and is held by the first case member 21. However, the protrusion 212c may be integrally formed as a part of the bottom portion 212.

底部212の挿通孔212aは、周方向の幅が断続部材5の突部53の周方向の幅よりも広く、デフケース2と断続部材5とは、挿通孔212aの周方向幅と突部53の周方向幅との差に応じた所定の角度範囲で相対回転可能である。断続部材5には、この所定の角度範囲よりも大きい角度範囲に亘って、椀状凹部510の内面510aが形成されている。これにより、断続部材5がデフケース2に対して相対回転しても、突起212c(球体23)の先端部が常に椀状凹部510に収容されて内面510aと軸方向に向かい合う。 The through hole 212a of the bottom portion 212 has a width in the circumferential direction wider than the circumferential width of the protrusion 53 of the interrupting member 5, and the differential case 2 and the interrupting member 5 have the circumferential width of the through hole 212a and the protrusion 53. Relative rotation is possible within a predetermined angle range according to the difference from the circumferential width. An inner surface 510a of the bowl-shaped recess 510 is formed on the interrupting member 5 over an angle range larger than the predetermined angle range. As a result, even if the interrupting member 5 rotates relative to the differential case 2, the tip of the protrusion 212c (sphere 23) is always housed in the bowl-shaped recess 510 and faces the inner surface 510a in the axial direction.

第1ケース部材21の底部212の突起212cと断続部材5の円板部51の椀状凹部510とは、断続部材5を底部212から離間させる軸方向の推力を発生させるカム機構16を構成する。次に、図6を参照して、このカム機構16の動作について説明する。 The protrusion 212 c of the bottom portion 212 of the first case member 21 and the bowl-shaped recess 510 of the disc portion 51 of the interrupting member 5 constitute a cam mechanism 16 that generates an axial thrust force that separates the interrupting member 5 from the bottom portion 212. .. Next, the operation of the cam mechanism 16 will be described with reference to FIG.

図8(a)〜(c)は、カム機構16の動作を、断続部材5、第1ケース部材21の底部212、及び第1サイドギヤ31の環状壁部312の周方向断面で模式的に示す説明図である。図8(a)及び(b)では、デフケース2(第1ケース部材21)に対する第1サイドギヤ31の回転方向を矢印Aで示している。 8A to 8C schematically show the operation of the cam mechanism 16 in the circumferential cross section of the interrupting member 5, the bottom portion 212 of the first case member 21, and the annular wall portion 312 of the first side gear 31. FIG. In FIGS. 8A and 8B, the rotation direction of the first side gear 31 with respect to the differential case 2 (first case member 21) is indicated by an arrow A.

図8(a)に示すように、椀状凹部510の内面510aは、断続部材5の周方向に対して一方に傾斜した第1傾斜面510bと他方に傾斜した第2傾斜面510cとからなる。断続部材5の周方向に対する第1傾斜面510bの傾斜角と第2傾斜面510cの傾斜角とは同じである。 As shown in FIG. 8A, the inner surface 510a of the bowl-shaped recess 510 is composed of a first inclined surface 510b inclined to one side and a second inclined surface 510c inclined to the other with respect to the circumferential direction of the interrupting member 5. .. The inclination angle of the first inclined surface 510b and the inclination angle of the second inclined surface 510c with respect to the circumferential direction of the interrupting member 5 are the same.

コイル601に通電されていないとき、断続部材5は、復帰バネ13の付勢力によって第1ケース部材21の底部212側に押し付けられている。この状態を図8(a)に示す。図8(a)に示すように、底部212の突起212cは、椀状凹部510の最奥部に当接し、断続部材5の噛み合い歯521と第1サイドギヤ31の噛み合い歯313とは噛み合わない。コイル601に通電されると、断続部材5が連結部材8を介してプランジャ7に押圧され、断続部材5が第1サイドギヤ31に噛み合う。図8(b)は、この噛み合いの開始時の状態を示し、図8(c)は、噛み合いが完了した状態を示している。 When the coil 601 is not energized, the interrupting member 5 is pressed against the bottom portion 212 side of the first case member 21 by the urging force of the return spring 13. This state is shown in FIG. As shown in FIG. 8A, the protrusion 212c of the bottom portion 212 abuts on the innermost portion of the bowl-shaped recess 510, and the meshing teeth 521 of the intermittent member 5 and the meshing teeth 313 of the first side gear 31 do not mesh with each other. When the coil 601 is energized, the interrupting member 5 is pressed by the plunger 7 via the connecting member 8, and the interrupting member 5 meshes with the first side gear 31. FIG. 8B shows a state at the start of this meshing, and FIG. 8C shows a state in which the meshing is completed.

図8(b)に示すように、コイル601に通電されて断続部材5が押圧されると、まず断続部材5の噛み合い歯521及び第1サイドギヤ31の噛み合い歯313の先端部同士が噛み合う。この噛み合いにより、断続部材5が第1サイドギヤ31に連れ回りしてデフケース2と相対回転し、底部212の突起212cが椀状凹部510の第1傾斜面510b又は第2傾斜面510cを摺動する。図8(b)では、底部212の突起212cが椀状凹部510の第1傾斜面510bを摺動する場合を示している。この摺動により、底部212の突起212cが当接する部分が徐々に椀状凹部510の浅い部分に移動し、断続部材5がカム推力によって第1サイドギヤ31側に移動する。 As shown in FIG. 8B, when the coil 601 is energized and the interrupting member 5 is pressed, first, the engaging teeth 521 of the interrupting member 5 and the tip ends of the engaging teeth 313 of the first side gear 31 are engaged with each other. Due to this meshing, the interrupting member 5 rotates along with the first side gear 31 and relatively rotates with the differential case 2, and the protrusion 212c of the bottom portion 212 slides on the first inclined surface 510b or the second inclined surface 510c of the bowl-shaped recess 510. .. FIG. 8B shows a case where the protrusion 212c of the bottom portion 212 slides on the first inclined surface 510b of the bowl-shaped recess 510. By this sliding, the portion of the bottom portion 212 with which the protrusion 212c abuts is gradually moved to the shallow portion of the bowl-shaped recess 510, and the interrupting member 5 is moved to the first side gear 31 side by the cam thrust.

デフケース2に対する断続部材5の相対回転は、断続部材5の突部53の当接面53aが、第1ケース部材21における挿通孔212aの内面212bに接触することで規制される。つまり、図8(c)に示すように断続部材5の突部53の当接面53aが挿通孔212aの内面212bに当接すると、デフケース2に対する断続部材5の相対回転が停止し、断続部材5のデフケース2に対する軸方向移動も停止する。 The relative rotation of the interrupting member 5 with respect to the differential case 2 is restricted by the contact surface 53a of the projection 53 of the interrupting member 5 contacting the inner surface 212b of the insertion hole 212a in the first case member 21. That is, as shown in FIG. 8C, when the contact surface 53a of the projection 53 of the interrupting member 5 contacts the inner surface 212b of the insertion hole 212a, the relative rotation of the interrupting member 5 with respect to the differential case 2 is stopped, and the interrupting member 5 is stopped. The axial movement of No. 5 with respect to the differential case 2 also stops.

断続部材5の噛み合い歯521と第1サイドギヤ31の噛み合い歯313との噛み合いが完了した状態では、断続部材5の突部53が第1ケース部材21の挿通孔212aに係合してデフケース2と断続部材5との相対回転が規制され、かつ断続部材5の噛み合い歯521と第1サイドギヤ31の噛み合い歯313との噛み合いにより断続部材5と第1サイドギヤ31との相対回転が規制される。これにより、デフケース2と第1サイドギヤ31との相対回転が規制され、デフケース2から断続部材5を介して第1サイドギヤ31に駆動力が伝達される。 When the meshing teeth 521 of the interrupting member 5 and the meshing teeth 313 of the first side gear 31 are completely meshed with each other, the projection 53 of the interrupting member 5 engages with the insertion hole 212a of the first case member 21 and the differential case 2. The relative rotation between the interrupting member 5 is restricted, and the relative rotation between the interrupting member 5 and the first side gear 31 is restricted by the meshing between the meshing teeth 521 of the interrupting member 5 and the meshing teeth 313 of the first side gear 31. As a result, the relative rotation between the differential case 2 and the first side gear 31 is restricted, and the driving force is transmitted from the differential case 2 to the first side gear 31 via the interrupting member 5.

また、デフケース2と第1サイドギヤ31との差動が規制されることによって第1ピニオンギヤ41及び第2ピニオンギヤ42が自転不能となり、デフケース2と第2サイドギヤ32との差動も規制され、デフケース2から第1ピニオンギヤ41及び第2ピニオンギヤ42を介して第2サイドギヤ32に駆動力が伝達される。 Further, since the differential between the differential case 2 and the first side gear 31 is restricted, the first pinion gear 41 and the second pinion gear 42 become non-rotatable, the differential between the differential case 2 and the second side gear 32 is restricted, and the differential case 2 The driving force is transmitted to the second side gear 32 from the first pinion gear 41 and the second pinion gear 42.

移動機構10の動作は、ポジションセンサ90によって検出される。ポジションセンサ90は、プランジャ7の軸方向位置に応じて電気信号をコントローラ9に出力する。 The operation of the moving mechanism 10 is detected by the position sensor 90. The position sensor 90 outputs an electric signal to the controller 9 according to the axial position of the plunger 7.

図9(a)及び(b)は、ポジションセンサ90の構成例を模式的に示す模式図である。本実施の形態では、ポジションセンサ90がプランジャ7の側板部72の軸方向位置を検出する。ポジションセンサ90は、プランジャ7の側板部72に弾性的に接触する接触子91と、接触子91を支持する支持体92と、支持体92に対して接触子91を飛び出させる方向に付勢するバネ93と、支持体92に対する接触子91の変位によってオン・オフ状態が切り替わるスイッチ94とを有している。 9A and 9B are schematic views schematically showing a configuration example of the position sensor 90. In the present embodiment, the position sensor 90 detects the axial position of the side plate portion 72 of the plunger 7. The position sensor 90 urges the contactor 91 that elastically contacts the side plate portion 72 of the plunger 7, the support body 92 that supports the contactor 91, and the direction in which the contactor 91 pops out with respect to the support body 92. It has a spring 93 and a switch 94 whose on/off state is switched by displacement of the contactor 91 with respect to the support body 92.

接触子91は、回転軸線Oと平行に支持体92に対して進退移動する棒状の部材である。接触子91は、バネ93の付勢力によって、その先端部911がプランジャ7の側板部72の外面(磁束発生部60に対向する面とは反対側の側面)に当接する。接触子91の他端部には、接触子91の移動方向に対して直交する方向に膨出した膨出部912が設けられている。接触子91の移動によって膨出部912がスイッチ94の可動片941を押し込むと、一対の端子942,943が電気的に短絡する。 The contactor 91 is a rod-shaped member that moves forward and backward with respect to the support body 92 in parallel with the rotation axis O. The tip of the contactor 91 is brought into contact with the outer surface of the side plate portion 72 of the plunger 7 (side surface opposite to the surface facing the magnetic flux generating portion 60) by the biasing force of the spring 93. A bulging portion 912 bulging in a direction orthogonal to the moving direction of the contactor 91 is provided at the other end of the contactor 91. When the bulging portion 912 pushes the movable piece 941 of the switch 94 by the movement of the contactor 91, the pair of terminals 942 and 943 are electrically short-circuited.

ポジションセンサ90は、プランジャ7の軸方向移動に伴って断続部材5が連結位置に移動したとき、スイッチ94の一対の端子942,943が電気的に短絡して電気信号がオン状態となり、断続部材5が非連結位置にあるときには、スイッチ94の一対の端子942,943が絶縁されて電気信号がオフ状態となるように、デフキャリア100への取付位置が調節されている。図9(a)は、断続部材5が連結位置にあるときの状態を示し、図9(b)は、断続部材5が非連結位置にあるときの状態を示している。 When the disconnecting member 5 moves to the coupling position as the plunger 7 moves in the axial direction, the position sensor 90 electrically short-circuits the pair of terminals 942 and 943 of the switch 94 to turn on the electric signal, and the disconnecting member 90. When the switch 5 is in the non-coupling position, the mounting position on the differential carrier 100 is adjusted so that the pair of terminals 942 and 943 of the switch 94 are insulated and the electric signal is turned off. FIG. 9A shows a state when the interrupting member 5 is at the connecting position, and FIG. 9B shows a state when the interrupting member 5 is at the non-connecting position.

コントローラ9は、コイル601に励磁電流を供給しても、ポジションセンサ90の電気信号によって断続部材5が連結位置に移動したことを検知できない場合には、異常信号を出力する。この異常信号は、ランプ表示や警告音によって車両の運転者に認識される。 When the controller 9 cannot detect that the interrupting member 5 has moved to the connecting position by the electric signal of the position sensor 90 even if the exciting current is supplied to the coil 601, the controller 9 outputs an abnormal signal. This abnormal signal is recognized by the driver of the vehicle through a lamp display and a warning sound.

(実施の形態の作用及び効果)
以上説明した本実施の形態によって得られる主な作用及び効果は次のとおりである。
(Operation and Effect of Embodiment)
The main actions and effects obtained by the present embodiment described above are as follows.

(1)回り止め部材62は、固定部621によってヨーク61に対する磁束発生部60の軸方向移動を規制すると共に、ヨーク61をデフキャリア100に対して回り止めする。このため、磁束発生部60の軸方向移動を規制する部材とヨーク61を回り止めする部材とを別個に設ける必要がなく、コストを抑制することが可能となる。 (1) The rotation preventing member 62 restricts the axial movement of the magnetic flux generating portion 60 with respect to the yoke 61 by the fixing portion 621, and also prevents the yoke 61 from rotating with respect to the differential carrier 100. For this reason, it is not necessary to separately provide a member that restricts the axial movement of the magnetic flux generation unit 60 and a member that stops the yoke 61, and it is possible to reduce the cost.

(2)回り止め部材62は、非磁性材料からなるので、回り止め部材62を介して磁束発生部60の磁束がデフキャリア100に漏れることが抑制される。このため、断続部材5を連結位置に移動させる移動力が磁束漏れによって低下してしまうことを抑制できる。 (2) Since the detent member 62 is made of a non-magnetic material, the magnetic flux of the magnetic flux generator 60 is suppressed from leaking to the differential carrier 100 via the detent member 62. Therefore, it is possible to prevent the moving force for moving the connecting/disconnecting member 5 to the connecting position from decreasing due to magnetic flux leakage.

(3)爪部623は、弾性変形してプランジャ7の第2貫通孔722を通り抜け、第2貫通孔722を通り抜けた後に弾性復帰して折り返された先端部が延在部622から離間する。このため、延在部622及び爪部623を第2貫通孔722に挿通させる作業のみでプランジャ7がヨーク61から離脱してしまうことを防ぐことができる。 (3) The claw portion 623 elastically deforms to pass through the second through hole 722 of the plunger 7, and after passing through the second through hole 722, the tip end portion that is elastically restored and folded back is separated from the extending portion 622. Therefore, it is possible to prevent the plunger 7 from coming off the yoke 61 only by the work of inserting the extending portion 622 and the claw portion 623 into the second through hole 722.

(4)プランジャ7の側板部72には複数の第2貫通孔722が形成され、回り止め部材62は複数の第2貫通孔722にそれぞれ挿通される複数の延在部622及び爪部623を有するので、プランジャ7が磁束発生部60及びヨーク61に対して軸方向に移動するとき、回転軸線Oに対するプランジャ7の傾きや偏りが抑制される。 (4) A plurality of second through holes 722 are formed in the side plate portion 72 of the plunger 7, and the rotation stopping member 62 has a plurality of extending portions 622 and claw portions 623 which are respectively inserted into the plurality of second through holes 722. Because of this, when the plunger 7 moves in the axial direction with respect to the magnetic flux generating section 60 and the yoke 61, the inclination and deviation of the plunger 7 with respect to the rotation axis O are suppressed.

[第2の実施の形態]
次に、本発明の第2の実施の形態について図10を参照して説明する。本実施の形態は、保持部6やプランジャ7等の構成が第1の実施の形態と異なり、その他については第1の実施の形態と同様であるので、この違いの部分について説明する。図10において、第1の実施の形態について説明したものに対応する構成要素については、図4等と同一の符号を付している。
[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG. This embodiment is different from the first embodiment in the configuration of the holding portion 6, the plunger 7, and the like, and is similar to the first embodiment in other respects. Therefore, only the difference will be described. 10, constituent elements corresponding to those described in the first embodiment are designated by the same reference numerals as those in FIG. 4 and the like.

図10は、第2の実施の形態に係る差動制限装置の一部を拡大して示す断面図であり、(a)は断続部材5が非連結位置にある状態を示し、(b)は断続部材5が連結位置にある状態を示している。 FIG. 10 is an enlarged cross-sectional view showing a part of the differential limiting device according to the second embodiment, where (a) shows a state in which the interrupting member 5 is in the non-coupling position, and (b) shows The connecting member 5 is shown in the connecting position.

第1の実施の形態では、ヨーク61が円筒部611と鍔部612とを一体に有し、円筒部611が磁束発生部60を内側から覆う場合について説明した。本実施の形態では、ヨーク61が第1の実施の形態と同様に円筒状の円筒部611と磁束発生部60の軸方向端面60cを覆う鍔部612とを一体に有しているが、円筒部611は磁束発生部60の内周面60bではなく、外周面60aを外側から覆っている。鍔部612は、円筒部611の軸方向の端部から内方に突出している。 In the first embodiment, the case where the yoke 61 integrally includes the cylindrical portion 611 and the flange portion 612, and the cylindrical portion 611 covers the magnetic flux generation portion 60 from the inside has been described. In the present embodiment, the yoke 61 integrally includes the cylindrical portion 611 having a cylindrical shape and the flange portion 612 that covers the axial end surface 60c of the magnetic flux generation portion 60, as in the first embodiment. The portion 611 covers the outer peripheral surface 60a, not the inner peripheral surface 60b of the magnetic flux generator 60, from the outside. The collar portion 612 projects inward from the axial end portion of the cylindrical portion 611.

また、本実施の形態では、デフケース2の第1ケース部材21が、ヨーク61の円筒部611の一部を外周側から覆う覆い部214を円筒部211と一体に有している。円筒部611の外周面には、環状凹部611hが形成されている。この環状凹部611hには、覆い部214にピン171により固定されたプレート172が係合し、このプレート172の係合によってヨーク61の軸方向移動が規制されている。 Further, in the present embodiment, the first case member 21 of the differential case 2 integrally has the cover portion 214 that covers a part of the cylindrical portion 611 of the yoke 61 from the outer peripheral side with the cylindrical portion 211. An annular recess 611h is formed on the outer peripheral surface of the cylindrical portion 611. A plate 172 fixed to the cover portion 214 by a pin 171 is engaged with the annular recess 611h, and the axial movement of the yoke 61 is restricted by the engagement of the plate 172.

また、本実施の形態では、第1の実施の形態と同様に、プランジャ7が円筒部71と側板部72とを一体に有しているが、円筒部71は磁束発生部60の内周に配置され、側板部72は、円筒部71の軸方向の一端部から外方に突出している。 Further, in the present embodiment, as in the first embodiment, the plunger 7 integrally has the cylindrical portion 71 and the side plate portion 72, but the cylindrical portion 71 is located inside the magnetic flux generating portion 60. The side plate portion 72 is arranged so as to project outward from one axial end of the cylindrical portion 71.

連結部材8は、第1の実施の形態と同様に、リング状の環状部81と、環状部81から軸方向に延びる3つの延在部82(図10には、このうち1つの延在部82を示す)と、延在部82の先端部から内方に突出して断続部材5に固定される固定部83とを一体に有しているが、環状部81はプランジャ7の側板部72ではなく、プランジャ7の円筒部71のデフケース2の軸方向端面に当接している。 Similar to the first embodiment, the connecting member 8 includes a ring-shaped annular portion 81 and three extending portions 82 extending in the axial direction from the annular portion 81 (in FIG. 10, one extending portion is included). 82) and a fixing portion 83 that protrudes inward from the distal end portion of the extending portion 82 and is fixed to the interrupting member 5, but the annular portion 81 is different from the side plate portion 72 of the plunger 7. Instead, the cylindrical portion 71 of the plunger 7 is in contact with the axial end surface of the differential case 2.

回り止め部材62は、第1の実施の形態と同様に、ヨーク61の円筒部611に対する磁束発生部60の軸方向移動を規制する固定部621と、デフキャリア100の係止部103に係止される延在部622と、延在部622の先端から鋭角に折り返された爪部6223とを有している。延在部622の基端部は、固定部621に連続している。 The rotation preventing member 62 is locked to the fixing portion 621 that restricts the axial movement of the magnetic flux generating portion 60 with respect to the cylindrical portion 611 of the yoke 61 and the locking portion 103 of the differential carrier 100, as in the first embodiment. The extended portion 622 and the claw portion 6223 folded back from the tip of the extended portion 622 at an acute angle. The base end of the extending portion 622 is continuous with the fixed portion 621.

本実施の形態では、延在部622が固定部621の内周端部から軸方向に延出され、爪部623は延在部622の先端から固定部621の径方向における内側に折り返されている。回り止め部材62の固定部621は、その外周面621bがヨーク61の円筒部611に嵌合され、ヨーク61に固定されている。 In the present embodiment, the extending portion 622 is axially extended from the inner peripheral end portion of the fixing portion 621, and the claw portion 623 is folded back from the tip of the extending portion 622 to the inner side in the radial direction of the fixing portion 621. There is. An outer peripheral surface 621b of the fixing portion 621 of the rotation stopping member 62 is fitted to the cylindrical portion 611 of the yoke 61 and is fixed to the yoke 61.

延在部622及び爪部623が側板部72の第2貫通孔722に挿通されるとき、爪部623は、延在部622と重なるように弾性変形して第2貫通孔722を通り抜け、第2貫通孔722を通り抜けた後に弾性復帰して折り返された先端部が延在部622から離間する。そして、爪部623の少なくとも一部がプランジャ7の第2貫通孔722よりも径方向内側に位置する。これにより、第1の実施の形態と同様に、プランジャ7が延在部622の先端側に移動したとき、側板部72が回り止め部材62の爪部623に当接することで、プランジャ7のヨーク61からの離脱が抑止される。 When the extension part 622 and the claw part 623 are inserted into the second through hole 722 of the side plate part 72, the claw part 623 elastically deforms so as to overlap with the extension part 622, passes through the second through hole 722, and After passing through the second through hole 722, the tip end portion that elastically returns and is folded back is separated from the extending portion 622. Then, at least a part of the claw portion 623 is positioned radially inward of the second through hole 722 of the plunger 7. As a result, as in the first embodiment, when the plunger 7 moves toward the distal end side of the extending portion 622, the side plate portion 72 abuts on the claw portion 623 of the rotation stopping member 62, and thus the yoke of the plunger 7 is formed. Withdrawal from 61 is suppressed.

本実施の形態によっても、第1の実施の形態と同様の効果が得られる。 Also according to the present embodiment, the same effect as that of the first embodiment can be obtained.

[第3の実施の形態]
次に、本発明の第3の実施の形態について図11を参照して説明する。本実施の形態は、回り止め部材62の構成が第1の実施の形態と異なり、その他については第1の実施の形態と同様であるので、この違いの部分について説明する。図11において、第1の実施の形態について説明したものに対応する構成要素については、図2や図6と同一の符号を付している。
[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG. In this embodiment, the configuration of the rotation stopping member 62 is different from that of the first embodiment, and the other points are the same as those of the first embodiment. Therefore, the difference will be described. 11, constituent elements corresponding to those described in the first embodiment are designated by the same reference numerals as those in FIGS. 2 and 6.

図11は、第3の実施の形態に係る差動制限装置の分解斜視図である。第1の実施の形態では、回り止め部材62の回転規制部622の延在部622が軸方向に長辺方向を有する長方形状であり、爪部623が延在部622の先端から鋭角に折り返されて形成されていたが、本実施の形態では、長方形状の延在部622の一部がU字状に打ち抜かれ、打ち抜かれた部分に三方が囲まれた舌片を外径側に屈曲させて爪部623が形成されている。この爪部623は、第1の実施の形態と同様に、プランジャ7が延在部622の先端側に移動したとき、側板部72に当接してプランジャ7のヨーク61からの離脱を抑止する。延在部622は、爪部623の周方向の両側部、及び爪部623の軸方向一側(軸方向移動規制部621側)にあたる部分が打ち抜き加工により開口している。 FIG. 11 is an exploded perspective view of the differential limiting device according to the third embodiment. In the first embodiment, the extending portion 622 of the rotation restricting portion 622 of the rotation preventing member 62 has a rectangular shape having the long side direction in the axial direction, and the claw portion 623 is folded back from the tip of the extending portion 622 at an acute angle. However, in the present embodiment, a part of the rectangular extending portion 622 is punched out in a U shape, and the tongue piece surrounded on three sides by the punched portion is bent to the outer diameter side. Thus, the claw portion 623 is formed. Similar to the first embodiment, the claw portion 623 abuts the side plate portion 72 to prevent the plunger 7 from coming off the yoke 61 when the plunger 7 moves to the tip side of the extending portion 622. The extending portion 622 is open at both sides in the circumferential direction of the claw portion 623 and a portion corresponding to one side of the claw portion 623 in the axial direction (the side of the axial movement restricting portion 621) by punching.

また、第1の実施の形態では、回り止め部材62の軸方向移動規制部621が円環状である場合について説明したが、本実施の形態では、軸方向移動規制部621がヨーク61の円筒部611の周方向に沿って延びる円弧状である。本実施の形態でも、一対の回転規制部622が回転軸線Oを挟む対称な位置に設けられ、軸方向移動規制部621は、その円弧角(図11に示すθ)が180°を超える範囲に延在している。軸方向移動規制部621は、溶接又は加締めによってヨーク61の円筒部611における鍔部612とは反対側の端部に相対回転不能に固定されている。 Further, in the first embodiment, the case where the axial movement restricting portion 621 of the whirl-stop member 62 is described as an annular shape, but in the present embodiment, the axial movement restricting portion 621 is the cylindrical portion of the yoke 61. It has an arc shape extending along the circumferential direction of 611. Also in the present embodiment, the pair of rotation restricting portions 622 are provided at symmetrical positions sandwiching the rotation axis O, and the axial movement restricting portion 621 has an arc angle (θ shown in FIG. 11) in a range exceeding 180°. It has been extended. The axial movement restricting portion 621 is fixed to the end portion of the cylindrical portion 611 of the yoke 61 on the opposite side of the flange portion 612 by welding or caulking so as not to rotate relative to each other.

本実施の形態によっても、第1の実施の形態と同様の効果が得られる。 Also according to the present embodiment, the same effect as that of the first embodiment can be obtained.

(付記)
以上、本発明を上記実施の形態に基づいて説明したが、本発明はこ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。例えば、上記実施の形態では、一対のサイドギヤ(第1サイドギヤ31及び第2サイドギヤ32)と一対のピニオンギヤ(第1ピニオンギヤ41及び第2ピニオンギヤ42)のそれぞれの回転軸が平行な平行軸タイプの差動装置に本発明を適用した場合について説明したが、これに限らず、一対のサイドギヤと一対のピニオンギヤとがギヤ軸を直交させて噛み合う構成の差動制限装置に本発明を適用することも可能である。
(Appendix)
Although the present invention has been described based on the above-described embodiment, the present invention is not limited to this embodiment, and can be appropriately modified and carried out without departing from the spirit of the present invention. is there. For example, in the above-described embodiment, the pair of side gears (the first side gear 31 and the second side gear 32) and the pair of pinion gears (the first pinion gear 41 and the second pinion gear 42) are parallel shaft type differential axes in which the respective rotation axes are parallel. The case where the present invention is applied to the moving device has been described, but the present invention is not limited to this, and the present invention can also be applied to a differential limiting device having a configuration in which a pair of side gears and a pair of pinion gears mesh with each other with their gear axes orthogonal to each other. Is.

1…差動制限装置 10…移動機構
100…デフキャリア(ケース部材) 103…係止部
11…駆動力断続装置 2…デフケース(第1回転部材)
20…保持孔 31…第1サイドギヤ(第2回転部材)
32…第2サイドギヤ(第2回転部材) 5…断続部材
521…噛み合い歯 6…保持部
60…磁束発生部 601…コイル
61…ヨーク 611…円筒部
62…回り止め部 621…固定部
621a…内周面 621b…外周面
622…延在部 623…爪部
7…プランジャ(移動部材) 72…側板部
722…第2貫通孔(貫通孔)
DESCRIPTION OF SYMBOLS 1... Differential limiting device 10... Moving mechanism 100... Differential carrier (case member) 103... Locking portion 11... Driving force interrupting device 2... Differential case (first rotating member)
20... Retaining hole 31... First side gear (second rotating member)
32... 2nd side gear (2nd rotation member) 5... Intermittent member 521... Interlocking tooth 6... Holding part 60... Magnetic flux generation part 601... Coil 61... Yoke 611... Cylindrical part 62... Rotation stop part 621... Fixed part 621a... Inside Peripheral surface 621b... Outer peripheral surface 622... Extension portion 623... Claw portion 7... Plunger (moving member) 72... Side plate portion 722... Second through hole (through hole)

Claims (5)

ケース部材に収容され、共通の回転軸線を中心として相対回転可能に配置された第1回転部材と第2回転部材との間の駆動力伝達を断続する駆動力断続装置であって、
前記第1回転部材との相対回転が規制されると共に、前記第2回転部材に噛み合う噛み合い歯を有し、前記噛み合い歯が前記第2回転部材に噛み合う連結位置と前記噛み合い歯が前記第2回転部材に噛み合わない非連結位置との間を軸方向に移動可能な断続部材と、
前記断続部材を軸方向に移動させる移動機構とを備え、
前記移動機構は、通電により磁束を発生させるコイルを有する環状の磁束発生部と、前記磁束発生部を保持する保持部と、前記断続部材と共に軸方向に移動する移動部材とを有し、
前記移動部材は、前記磁束の磁路を構成して前記磁束発生部と軸方向に対向する側板部を有し、前記側板部に軸方向の貫通孔が形成され、
前記保持部は、前記移動部材と共に前記磁束発生部の磁束の磁路を構成する軟磁性材料からなるヨークと、前記ヨークを前記ケース部材に対して回り止めする回り止め部材とを有し、
前記回り止め部材は、前記ヨークに固定された固定部と、前記固定部から軸方向に延在して前記移動部材の前記貫通孔に挿通され、前記ケース部材に設けられた係止部に係止されて前記ヨークの前記ケース部材に対する回転を規制する延在部と、前記移動部材の前記側板部よりも前記延在部の先端側に設けられた爪部とを有し、
前記移動部材が前記延在部の前記先端側に移動したとき、前記側板部が前記爪部に当接することで、前記移動部材の前記ヨークからの離脱が抑止される、
駆動力断続装置。
A driving force interrupting device for interrupting driving force transmission between a first rotating member and a second rotating member housed in a case member and arranged to be relatively rotatable about a common rotation axis,
Relative rotation with the first rotating member is regulated, and a meshing tooth that meshes with the second rotating member is provided, and a connecting position where the meshing tooth meshes with the second rotating member and the meshing tooth are the second rotation. An interrupting member that is axially movable between a non-connecting position that does not mesh with the member,
A moving mechanism for moving the interrupting member in the axial direction,
The moving mechanism has an annular magnetic flux generating section having a coil that generates a magnetic flux by energization, a holding section that holds the magnetic flux generating section, and a moving member that moves in the axial direction together with the interrupting member,
The moving member has a side plate portion that constitutes the magnetic path of the magnetic flux and axially faces the magnetic flux generation portion, and an axial through hole is formed in the side plate portion.
The holding portion includes a yoke made of a soft magnetic material that forms a magnetic path of a magnetic flux of the magnetic flux generating portion together with the moving member, and a detent member that detents the yoke with respect to the case member.
The anti-rotation member engages with a fixed portion fixed to the yoke, and an engaging portion provided in the case member, extending in the axial direction from the fixed portion and inserted into the through hole of the moving member. An extension part that is stopped to restrict rotation of the yoke with respect to the case member; and a claw part that is provided on the distal end side of the extension part with respect to the side plate part of the moving member,
When the moving member moves to the tip end side of the extending portion, the side plate portion abuts on the claw portion to prevent the moving member from being separated from the yoke.
Driving force intermittent device.
前記回り止め部材は、非磁性材料からなる、
請求項1に記載の駆動力断続装置。
The rotation stopping member is made of a non-magnetic material,
The drive force connecting/disconnecting device according to claim 1.
前記爪部は、その少なくとも一部が前記移動部材の前記貫通孔よりも径方向内側又は径方向外側に位置し、かつ前記延在部と共に前記移動部材の前記貫通孔を通過可能な弾性を有する、
請求項1又は2に記載の駆動力断続装置。
At least a part of the claw portion is located radially inward or radially outward of the through hole of the moving member, and has elasticity so that it can pass through the through hole of the moving member together with the extending portion. ,
The driving force connecting/disconnecting device according to claim 1.
前記移動部材の前記側板部には、複数の前記貫通孔が形成され、
前記回り止め部材は、前記複数の前記貫通孔にそれぞれ挿通される複数の前記延在部と、前記複数の前記延在部のそれぞれに対応して設けられた複数の前記爪部とを有する、
請求項3に記載の駆動力断続装置。
In the side plate portion of the moving member, a plurality of the through holes are formed,
The anti-rotation member has a plurality of the extension portions that are respectively inserted into the plurality of the through holes, and a plurality of the claw portions provided corresponding to each of the plurality of extension portions,
The driving force interrupting device according to claim 3.
ケース部材と、
前記ケース部材に収容され、共通の回転軸線を中心として相対回転可能に配置された第1乃至第3回転部材と、
前記第1回転部材との相対回転が規制されると共に、前記第2回転部材に噛み合う噛み合い歯を有し、前記噛み合い歯が前記第2回転部材に噛み合う連結位置と前記噛み合い歯が前記第2回転部材に噛み合わない非連結位置との間を軸方向に移動可能な断続部材と、
前記断続部材を軸方向に移動させる移動機構とを備え、
前記断続部材の前記噛み合い歯が前記第2回転部材に噛み合わない状態で、前記第1回転部材に入力された駆動力が前記第2回転部材及び前記第3回転部材に差動を許容して配分され、前記断続部材の前記噛み合い歯が前記第2回転部材に噛み合うことにより、前記第1回転部材と前記第2回転部材及び前記第3回転部材との差動が制限される差動制限装置であって、
前記移動機構は、通電により磁束を発生させるコイルを有する環状の磁束発生部と、前記磁束発生部を保持する保持部と、前記断続部材と共に軸方向に移動する移動部材とを有し、
前記移動部材は、前記磁束の磁路を構成して前記磁束発生部と軸方向に対向する側板部を有し、前記側板部に軸方向の貫通孔が形成され、
前記保持部は、前記移動部材と共に前記磁束発生部の磁束の磁路を構成する軟磁性材料からなるヨークと、前記ヨークを前記ケース部材に対して回り止めする回り止め部材とを有し、
前記回り止め部材は、前記ヨークに固定された固定部と、前記固定部から軸方向に延在して前記移動部材の前記貫通孔に挿通され、前記ケース部材に設けられた係止部に係止されて前記ヨークの前記ケース部材に対する回転を規制する延在部と、前記移動部材の前記側板部よりも前記延在部の先端側に設けられた爪部とを有し、
前記移動部材が前記延在部の前記先端側に移動したとき、前記側板部が前記爪部に当接することで、前記移動部材の前記ヨークからの離脱が抑止される、
差動制限装置。
A case member,
First to third rotating members housed in the case member and arranged to be relatively rotatable about a common rotation axis;
Relative rotation with respect to the first rotating member is regulated, and there are meshing teeth that mesh with the second rotating member, and the meshing teeth mesh with the second rotating member. An interrupting member that is axially movable between a non-connecting position that does not mesh with the member,
A moving mechanism for moving the interrupting member in the axial direction,
The driving force input to the first rotating member is distributed by allowing the differential to the second rotating member and the third rotating member in a state where the meshing teeth of the intermittent member do not mesh with the second rotating member. The differential limiting device limits the differential between the first rotating member, the second rotating member, and the third rotating member by the meshing teeth of the interrupting member meshing with the second rotating member. There
The moving mechanism has an annular magnetic flux generating section having a coil that generates a magnetic flux by energization, a holding section that holds the magnetic flux generating section, and a moving member that moves in the axial direction together with the interrupting member,
The moving member has a side plate portion that constitutes the magnetic path of the magnetic flux and axially faces the magnetic flux generation portion, and an axial through hole is formed in the side plate portion.
The holding portion includes a yoke made of a soft magnetic material that forms a magnetic path of a magnetic flux of the magnetic flux generating portion together with the moving member, and a detent member that detents the yoke with respect to the case member.
The anti-rotation member engages with a fixed portion fixed to the yoke and an engaging portion provided on the case member, extending from the fixed portion in the axial direction and inserted into the through hole of the moving member. An extension part that is stopped to restrict rotation of the yoke with respect to the case member; and a claw part that is provided on the distal end side of the extension part with respect to the side plate part of the moving member,
When the moving member moves to the tip end side of the extending portion, the side plate portion abuts on the claw portion to prevent the moving member from being separated from the yoke.
Differential limiting device.
JP2016111139A 2016-03-02 2016-06-02 Driving force interrupting device and differential limiting device Expired - Fee Related JP6705293B2 (en)

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