JP2010084930A - Differential device - Google Patents

Differential device Download PDF

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JP2010084930A
JP2010084930A JP2008257543A JP2008257543A JP2010084930A JP 2010084930 A JP2010084930 A JP 2010084930A JP 2008257543 A JP2008257543 A JP 2008257543A JP 2008257543 A JP2008257543 A JP 2008257543A JP 2010084930 A JP2010084930 A JP 2010084930A
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intermittent
differential
differential case
urging
pinion
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Masaaki Fushiki
正明 伏木
Noriyuki Sudo
則幸 須藤
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GKN Driveline Japan Ltd
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GKN Driveline Japan Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a differential device whose differential case can be easily manufactured and besides an engaging and disengaging property of whose engaging and disengaging section can be improved. <P>SOLUTION: In the differential case 3, there are provided a receiving surface 21 for receiving a meshing reactive force applied in the axial direction of a pair of side gears 7, 9 and a restrictive surface 23 for restricting an axial movement of the engaging and disengaging member 13. The receiving surface 21 and the restrictive surface 23 are formed into the same level plane radially extending. Besides, the side gear 9 includes a small-diameter boss 25 extending from the side of a portion meshing with a pinion 5 axially to the side of the receiving surface 21. An energizing member 19 includes an energizing section 27 arranged radially between the outer circumferential surface of the boss 25 and the inner circumferential surface of the engaging and disengaging section 15 to impart energizing force to the engaging and disengaging section 13. Further, a space 29 is provided between the outer circumferential surface of the boss 25 and the inner circumferential surface of the energizing section 27. <P>COPYRIGHT: (C)2010,JPO&INPIT

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、デフロック機構を有するデファレンシャル装置としては、デフケースと、ベベルギヤ式の差動機構と、差動機構の差動を断続する断続部としてのドッグクラッチと、ドッグクラッチを作動させる電磁式アクチュエータとを備えたデファレンシャル装置が知られている（例えば、特許文献１参照）。このデファレンシャル装置では、ドッグクラッチが差動機構のサイドギヤに形成された噛み合い歯と、デフケースと軸方向に相対移動可能で、回転方向に一体回転可能に設けられたクラッチリングに形成された噛み合い歯とで構成されている。これらの噛み合い歯を噛み合わせることにより、差動機構の差動がロック状態となる。   Conventionally, a differential device having a differential lock mechanism includes a differential case, a bevel gear type differential mechanism, a dog clutch as an intermittence portion for interrupting the differential of the differential mechanism, and an electromagnetic actuator for operating the dog clutch. A differential apparatus is known (for example, see Patent Document 1). In this differential device, the dog clutch has a meshing tooth formed on the side gear of the differential mechanism, and a meshing tooth formed on a clutch ring that is axially movable relative to the differential case and is integrally rotatable in the rotational direction. It consists of By engaging these meshing teeth, the differential of the differential mechanism is locked.

このドッグクラッチのクラッチリングは、リターンスプリングによって噛み合い解除方向に常時付勢されている。このリターンスプリングによってクラッチリングに掛かる付勢力は、クラッチリングに設けたストッパ部とデフケースに設けたストッパ部とで受けられる。このクラッチリングのストッパ部の形状を突起などで形成することにより、ストッパ部の接触面積を低減させ、ドッグクラッチの断続特性を安定させている。
特開２００４−１１６７３０号公報 The clutch ring of this dog clutch is always urged in the meshing release direction by a return spring. The urging force applied to the clutch ring by the return spring is received by the stopper portion provided on the clutch ring and the stopper portion provided on the differential case. By forming the shape of the stopper portion of the clutch ring with a protrusion or the like, the contact area of the stopper portion is reduced, and the intermittent characteristics of the dog clutch are stabilized.
JP 2004-116730 A

ところで、上記のデファレンシャル装置では、デフケースのボス部をサイドギヤ側に延設させてサイドギヤの背面側と当接させることにより、サイドギヤの噛み合い反力をデフケースで受けていた。また、クラッチリングはデフケースのボス部の延設された部分の外周に配置されており、リターンスプリングはクラッチリングの内周とボス部の外周との間に配置されている。   By the way, in the differential device described above, the boss portion of the differential case is extended to the side gear side and brought into contact with the back side of the side gear, whereby the meshing reaction force of the side gear is received by the differential case. The clutch ring is disposed on the outer periphery of the extended portion of the boss portion of the differential case, and the return spring is disposed between the inner periphery of the clutch ring and the outer periphery of the boss portion.

しかしながら、このようなデファレンシャル装置のように、デフケースのクラッチリングが配置された部分を凹凸部などによって袋状に形成させることは、素材を形成する型の構造が複雑となり、素材成形が困難であった。加えて、素材の凹凸部に多量の駄肉が付いてしまい、駄肉部の鋳巣防止対策、或いは駄肉部の削り出しなどデフケースの製造コストが増加していた。   However, as in the case of such a differential device, forming the portion where the clutch ring of the differential case is disposed in a bag shape by the uneven portion or the like complicates the structure of the mold for forming the material, making it difficult to form the material. It was. In addition, a large amount of meat is attached to the concave and convex portions of the material, and the manufacturing cost of the differential case has increased, such as measures for preventing cast-holes in the meat portion or cutting out the meat portion.

また、デフケースに凹凸部を設けてしまうと、リターンスプリングの配置部において、リターンスプリングの径方向の空間に余裕がなく、リターンスプリングの形状が限られていた。このため、リターンスプリングの形状を変更させることができず、ドッグクラッチの断続特性も限られたものとなってしまい、ドッグクラッチの断続特性を容易に設計変更させることができなかった。   In addition, if the diffusive case is provided with an uneven portion, there is no room in the radial space of the return spring in the return spring arrangement portion, and the shape of the return spring is limited. For this reason, the shape of the return spring cannot be changed, the intermittent characteristics of the dog clutch are limited, and the intermittent characteristics of the dog clutch cannot be easily changed in design.

そこで、この発明は、デフケースを容易に製造させることができ、且つ断続部の断続特性を向上させ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。   Accordingly, an object of the present invention is to provide a differential device that can easily manufacture a differential case and can improve the intermittent characteristics of the intermittent portion.

請求項１の発明は、駆動トルクが入力されるデフケースと、このデフケースに支承されて自転可能であると共に前記デフ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出力部材と、前記デフケースと前記ピニオンと前記一対の出力部材とを備えた差動機構と、前記デフケースと一体回転可能に支持された断続部材と、この断続部材と前記出力部材のいずれか一方の出力部材との間に設けられ前記差動機構の差動を断続する断続部と、この断続部を作動させるアクチュエータと、前記断続部材を前記断続部の接続解除方向に付勢する付勢部材とを備えたデファレンシャル装置であって、前記デフケースには、前記一対の出力部材の軸方向に掛かる噛み合い反力を受ける受け面と、前記断続部材の軸方向の移動を規制する規制面とが設けられ、前記受け面と前記規制面とは、径方向に延設された同一平面で形成され、前記一方の出力部材は、前記ピニオンとの噛み合い部側から軸方向に前記受け面側に向けて延設された小径の筒状部を有し、前記付勢部材は、前記筒状部の外周と前記断続部の内周との径方向の間に配置され前記断続部材に付勢力を付与する付勢部を有し、前記筒状部の外周と前記付勢部の内周との径方向の間には、空間部が設けられていることを特徴とする。   The invention of claim 1 includes a differential case to which driving torque is input, a pinion supported by the differential case and capable of rotating, and revolved by rotation of the differential case, and a pair of output members that mesh with the pinion and can rotate relative to each other. A differential mechanism including the differential case, the pinion, and the pair of output members, an intermittent member supported so as to be integrally rotatable with the differential case, and an output member of any one of the intermittent member and the output member An intermittent portion that interrupts the differential of the differential mechanism, an actuator that operates the intermittent portion, and a biasing member that biases the intermittent member in the disconnecting direction of the intermittent portion. The differential case includes a receiving surface that receives a meshing reaction force applied in an axial direction of the pair of output members, and a shaft of the intermittent member. And the receiving surface and the regulating surface are formed in the same plane extending in the radial direction, and the one output member is on the side of the meshing portion with the pinion A small-diameter cylindrical portion extending in the axial direction toward the receiving surface, and the urging member is disposed between the outer periphery of the cylindrical portion and the inner periphery of the intermittent portion. It has a biasing portion that is arranged and applies a biasing force to the intermittent member, and a space portion is provided between the outer circumference of the cylindrical portion and the inner circumference of the biasing portion. Features.

請求項２の発明は、請求項１記載のデファレンシャル装置であって、前記付勢部材は、径方向長さが前記付勢部以上に設定された支持部を有し、この支持部は、前記筒状部の外周に支持されていることを特徴とする。   Invention of Claim 2 is a differential apparatus of Claim 1, Comprising: The said urging | biasing member has a support part by which radial direction length was set more than the said urging | biasing part. It is supported by the outer periphery of a cylindrical part.

請求項１記載のデファレンシャル装置は、デフケースに設けられた受け面と規制面とが径方向に延設された同一平面で形成されているので、デフケースの内部に凹凸部を設ける必要がなく、デフケースの素材成形を簡易化することができる。   In the differential device according to claim 1, since the receiving surface and the regulating surface provided in the differential case are formed in the same plane extending in the radial direction, it is not necessary to provide an uneven portion inside the differential case, and the differential case The material molding can be simplified.

また、筒状部の外周と断続部の内周との径方向の間に配置された付勢部材の付勢部の内周と筒状部の外周との径方向の間に空間部が設けられているので、空間部に対して付勢部の設計変更を容易に行うことができ、断続部に合わせた付勢部材の設計の自由度を向上することができる。   Further, a space portion is provided between the inner periphery of the urging portion of the urging member disposed between the outer periphery of the cylindrical portion and the inner periphery of the intermittent portion and the outer periphery of the cylindrical portion. Therefore, the design of the urging portion can be easily changed with respect to the space portion, and the degree of freedom in designing the urging member in accordance with the intermittent portion can be improved.

従って、デフケースを容易に製造させることができ、且つ断続部の断続特性を向上させることができる。   Therefore, the differential case can be easily manufactured, and the intermittent characteristics of the intermittent part can be improved.

請求項２記載のデファレンシャル装置は、付勢部材が径方向長さが付勢部以上に設定された支持部を有するので、付勢部の設計の自由度を確保しつつ、付勢部材を安定して支持することができ、断続部の断続特性を安定させることができる。   In the differential device according to claim 2, since the urging member has a support portion whose radial length is set to be greater than or equal to the urging portion, the urging member is stabilized while ensuring the degree of freedom in designing the urging portion. And the intermittent characteristics of the intermittent part can be stabilized.

図１〜図４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 apparatus according to an embodiment of the present invention 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、駆動トルクが入力されるデフケース３と、このデフケース３に支承されて自転可能であると共にデフケース３の回転によって公転するピニオン５と、このピニオン５と噛み合って相対回転可能な一対の出力部材としてのサイドギヤ７，９と、デフケース３とピニオン５と一対のサイドギヤ７，９とを備えた差動機構１１と、デフケース３と一体回転可能に支持された断続部材１３と、この断続部材１３とサイドギヤ９との間に設けられ差動機構１１の差動を断続する断続部１５と、この断続部１５を作動させるアクチュエータ１７と、断続部材１３を断続部１５の接続解除方向に付勢する付勢部材１９とを備えている。そして、デフケース３には、一対のサイドギヤ７，９の軸方向に掛かる噛み合い反力を受ける受け面２１と、断続部材１３の軸方向の移動を規制する規制面２３とが設けられ、受け面２１と規制面２３とは、径方向に延設された同一平面で形成され、サイドギヤ９は、ピニオン５との噛み合い部としての断続部１３側から軸方向に受け面２１側に向けて延設された小径の筒状部としてのボス部２５を有し、付勢部材１９は、ボス部２５の外周と断続部１５の内周との径方向の間に配置され断続部材１３に付勢力を付与する付勢部２７を有し、ボス部２５の外周と付勢部２７の内周との径方向の間には、空間部２９が設けられている。   A differential device 1 according to the present embodiment includes a differential case 3 to which driving torque is input, a pinion 5 supported by the differential case 3 and capable of rotating, and revolving by the rotation of the differential case 3, and meshing with the pinion 5. A differential mechanism 11 having side gears 7 and 9 as a pair of output members capable of relative rotation, a differential case 3, a pinion 5, and a pair of side gears 7 and 9, and an intermittent member supported so as to be integrally rotatable with the differential case 3 13, an intermittent portion 15 provided between the intermittent member 13 and the side gear 9 for interrupting the differential of the differential mechanism 11, an actuator 17 for operating the intermittent portion 15, and the intermittent member 13 for the intermittent portion 15. And an urging member 19 urging in the disconnection direction. The differential case 3 is provided with a receiving surface 21 that receives the meshing reaction force applied in the axial direction of the pair of side gears 7 and 9 and a regulating surface 23 that regulates the axial movement of the intermittent member 13. And the regulating surface 23 are formed in the same plane extending in the radial direction, and the side gear 9 is extended from the intermittent portion 13 side as the meshing portion with the pinion 5 toward the receiving surface 21 side in the axial direction. The biasing member 19 is disposed between the outer periphery of the boss portion 25 and the inner periphery of the intermittent portion 15 and imparts a biasing force to the intermittent member 13. A space portion 29 is provided between the outer periphery of the boss portion 25 and the inner periphery of the bias portion 27.

また、付勢部材１９は、径方向長さが付勢部２７以上に設定された支持部３１を有し、この支持部３１は、ボス部２５の外周に支持されている。   Further, the urging member 19 has a support portion 31 having a radial length set to be greater than or equal to the urging portion 27, and the support portion 31 is supported on the outer periphery of the boss portion 25.

図１〜図４に示すように、デフケース３は、カバー体３３とケース本体３５とからなり、軸方向両側に形成されたボス部３７，３９でそれぞれベアリング（不図示）を介してキャリア（不図示）に支持されている。また、デフケース３にはフランジ部４１が形成され、リングギヤ（不図示）が固定される。このリングギヤは、動力伝達ギヤ（不図示）と噛み合っており、駆動力が伝達されてデフケース３を回転駆動させる。ケース本体３５は、連続する一部材で形成され、内部に凹凸部が形成されず、内部の平面に受け面２１と規制面２３とが設けられている。受け面２１は、一対のサイドギヤ７，９の軸方向に掛かる噛み合い反力を受け、サイドギヤ９の軸方向外側への移動を規制する。規制面２３は、断続部材１３と当接することで、断続部材１３の軸方向外側への移動を規制する。この受け面２１と規制面２３とは、軸方向の突出長さが同一、ずなわち面一に設けられている。このデフケース３には、差動機構１１が収容され、デフケース３に伝達された駆動力が差動機構１１に伝達される。   As shown in FIGS. 1 to 4, the differential case 3 includes a cover body 33 and a case body 35, and bosses 37 and 39 formed on both sides in the axial direction are respectively provided with carriers (not shown) via bearings (not shown). (Shown). Further, the differential case 3 is formed with a flange portion 41, and a ring gear (not shown) is fixed thereto. The ring gear meshes with a power transmission gear (not shown), and the driving force is transmitted to drive the differential case 3 to rotate. The case main body 35 is formed of a single continuous member, is not formed with an uneven portion inside, and is provided with a receiving surface 21 and a regulating surface 23 on an inner plane. The receiving surface 21 receives a meshing reaction force applied in the axial direction of the pair of side gears 7 and 9, and restricts the movement of the side gear 9 in the axially outer side. The regulating surface 23 abuts the intermittent member 13 to restrict the movement of the intermittent member 13 outward in the axial direction. The receiving surface 21 and the regulating surface 23 have the same axial projecting length, that is, are flush with each other. The differential case 3 accommodates the differential mechanism 11, and the driving force transmitted to the differential case 3 is transmitted to the differential mechanism 11.

差動機構１１は、ピニオンシャフト４３と、ピニオン５と、一対のサイドギヤ７，９から構成されている。ピニオンシャフト４３は、端部をデフケース３に係合してピン４５で抜け止めされ、デフケース３と一体に回転駆動される。   The differential mechanism 11 includes a pinion shaft 43, a pinion 5, and a pair of side gears 7 and 9. The pinion shaft 43 is engaged with the differential case 3 at its end and is prevented from being removed by the pin 45, and is driven to rotate integrally with the differential case 3.

ピニオン５は、ピニオンシャフト４３に支承されてデフケース３の回転によって公転する。また、ピニオン５は、一対のサイドギヤ７，９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７，９に差回転が生じると回転駆動されるようにピニオンシャフト４３に自転可能に支持されている。また、ピニオン５とデフケース３との間には、ピニオン５の公転時に発生する径方向への移動を受ける球面ワッシャ４７が配置されている。   The pinion 5 is supported by the pinion shaft 43 and revolves as the differential case 3 rotates. The pinion 5 transmits a driving force to the pair of side gears 7 and 9 and is rotatably supported by the pinion shaft 43 so as to be driven to rotate when a differential rotation occurs between the pair of side gears 7 and 9 engaged with each other. ing. In addition, a spherical washer 47 is disposed between the pinion 5 and the differential case 3 to receive radial movement that occurs when the pinion 5 revolves.

一対のサイドギヤ７，９は、ボス部４９，２５でデフケース３に相対回転可能に支持され、ピニオン５と噛み合っている。また、サイドギヤ７，９とデフケース３との間には、ピニオン５との噛み合い反力によるサイドギヤ７，９の軸方向への移動を受けるスラストワッシャ５１，５３が配置されている。また、サイドギヤ９のボス部２５の軸方向端部には、段部５５が設けられている。この段部５５は、スラストワッシャ５３を介してデフケース３の受け面２１に噛み合い反力を入力する。また、サイドギヤ９の背面側には、噛み合い歯５７が形成されている。   The pair of side gears 7 and 9 are supported by boss portions 49 and 25 so as to be relatively rotatable with respect to the differential case 3 and mesh with the pinion 5. Further, between the side gears 7 and 9 and the differential case 3, thrust washers 51 and 53 that receive the movement of the side gears 7 and 9 in the axial direction by the meshing reaction force with the pinion 5 are arranged. A step 55 is provided at the axial end of the boss 25 of the side gear 9. The step portion 55 meshes with the receiving surface 21 of the differential case 3 via the thrust washer 53 and inputs a reaction force. Further, meshing teeth 57 are formed on the back side of the side gear 9.

断続部材１３は、デフケース３に形成された孔部５９に回転方向に係合して軸方向移動可能に配置されている。また、断続部材１３のデフケース３側は、デフケース３の規制面２３と当接することにより、断続部材１３の軸方向外側への移動が規制されている。また、断続部材１３のサイドギヤ９側には、噛み合い歯６１が形成され、断続部１５を構成している。   The intermittent member 13 is disposed so as to be axially movable by engaging with a hole 59 formed in the differential case 3 in the rotational direction. Further, the differential member 3 side of the intermittent member 13 is in contact with the regulating surface 23 of the differential case 3, thereby restricting movement of the intermittent member 13 outward in the axial direction. Further, meshing teeth 61 are formed on the side gear 9 side of the intermittent member 13 to constitute the intermittent portion 15.

断続部１５は、サイドギヤ９の噛み合い歯５７と断続部材１３の噛み合い歯６１とで構成されている。噛み合い歯５７，６１が噛み合うと、デフケース３とサイドギヤ９とが連結されて差動機構１１がデフロック状態となる。この断続部１５は、アクチュエータ１７によって作動される。   The intermeshing part 15 is constituted by meshing teeth 57 of the side gear 9 and meshing teeth 61 of the intermittent member 13. When the meshing teeth 57 and 61 mesh with each other, the differential case 3 and the side gear 9 are connected to bring the differential mechanism 11 into the differential lock state. This intermittent portion 15 is actuated by an actuator 17.

アクチュエータ１７は、可動部材６３と、電磁石６５と、ポジションスイッチ６７と、コントローラ（不図示）などを備えている。可動部材６３は、プランジャ６９とリング７１とから構成されている。プランジャ６９は、磁性材料から形成されている。このプランジャ６９の内周には、電磁石６５の磁力線がデフケース３側へ漏れることを防止する非磁性材料のリング７１が一体に固定されている。リング７１は、固定部材７３によって固定された非磁性材料からなる支持部材７５を介してデフケース３のボス部３９の外周に軸方向移動可能に支持されている。この可動部材６３は、電磁石６５の励磁によりコア７９とプランジャ６９とを透過する磁力線によって形成される磁束ループによって、プランジャ６９が断続部材１３側に移動操作され、リング７１が断続部材１３に固定されたプレート８３を介して断続部材１３を押圧して断続部１５が接続される。   The actuator 17 includes a movable member 63, an electromagnet 65, a position switch 67, a controller (not shown), and the like. The movable member 63 includes a plunger 69 and a ring 71. The plunger 69 is made of a magnetic material. A ring 71 made of a nonmagnetic material that prevents the magnetic lines of force of the electromagnet 65 from leaking toward the differential case 3 is integrally fixed to the inner periphery of the plunger 69. The ring 71 is supported on the outer periphery of the boss portion 39 of the differential case 3 so as to be axially movable via a support member 75 made of a nonmagnetic material fixed by a fixing member 73. In the movable member 63, the plunger 69 is moved to the intermittent member 13 side by a magnetic flux loop formed by magnetic lines that pass through the core 79 and the plunger 69 by excitation of the electromagnet 65, and the ring 71 is fixed to the intermittent member 13. The intermittent member 13 is pressed through the plate 83 to connect the intermittent portion 15.

電磁石６５は、電磁コイル７７とコア７９を有している。電磁コイル７７は、樹脂でモールド成形され、コア７９に収容されている。コア７９は、磁性材料から形成され、コントローラに接続されており、コントローラによって電磁コイル７７への通電が制御されている。また、コア７９は、回り止め部材（不図示）が設けられ、キャリアなどの静止側部材８１に対して電磁石６５が回転方向に回り止めされている。この電磁石６５への通電による断続部１５での断続状況は、ポジションスイッチ６７によって検知される。   The electromagnet 65 has an electromagnetic coil 77 and a core 79. The electromagnetic coil 77 is molded with resin and accommodated in the core 79. The core 79 is made of a magnetic material and is connected to a controller, and energization of the electromagnetic coil 77 is controlled by the controller. The core 79 is provided with a rotation preventing member (not shown), and the electromagnet 65 is prevented from rotating in the rotation direction with respect to the stationary side member 81 such as a carrier. The intermittent state at the intermittent portion 15 due to energization of the electromagnet 65 is detected by the position switch 67.

ポジションスイッチ６７は、静止側部材８１に固定され、プレート８３と当接する検出部８５を有している。検出部８５は、断続部材１３と一体的に移動するプレート８３に当接され、プレート８３の移動を検知することにより、断続部材１３の位置を検出する。この検出部８５で断続部材１３の位置を検出することにより、断続部１５の断続状況を把握することができる。   The position switch 67 is fixed to the stationary member 81 and has a detection unit 85 that abuts against the plate 83. The detection unit 85 is in contact with the plate 83 that moves integrally with the intermittent member 13 and detects the position of the intermittent member 13 by detecting the movement of the plate 83. By detecting the position of the intermittent member 13 by the detection unit 85, the intermittent state of the intermittent portion 15 can be grasped.

このような断続部１５の断続は、断続部１５を接続させる場合にはアクチュエータ１７を作動させて断続部材１３を断続部１５の接続方向に移動させ、断続部１５の接続を解除させる場合にはアクチュエータ１７の作動を停止させて付勢部材１９の付勢力によって断続部材１３を断続部１５の接続解除方向に移動させる。   When the intermittent portion 15 is connected, the actuator 17 is operated to move the intermittent member 13 in the connecting direction of the intermittent portion 15 and the connection of the intermittent portion 15 is released. The operation of the actuator 17 is stopped, and the intermittent member 13 is moved in the connection release direction of the intermittent portion 15 by the urging force of the urging member 19.

付勢部材１９は、環状に形成されてサイドギヤ９のボス部２５の外周と断続部１５の内周との径方向の間に配置され、付勢部２７と支持部３１とを備えている。付勢部２７は、円板状の板材の外周部を切り起こして形成され、断続部１５の内周側でサイドギヤ９と断続部材１３とに当接して配置されている。この付勢部２７は、断続部材１３を断続部１５の接続解除方向に付勢する付勢力を有し、支持部３１によってサイドギヤ９と断続部材１３との間に位置するように支持されている。   The urging member 19 is formed in an annular shape and disposed between the outer periphery of the boss portion 25 of the side gear 9 and the inner periphery of the intermittent portion 15, and includes an urging portion 27 and a support portion 31. The urging portion 27 is formed by cutting and raising the outer peripheral portion of a disk-shaped plate material, and is disposed in contact with the side gear 9 and the intermittent member 13 on the inner peripheral side of the intermittent portion 15. The urging portion 27 has an urging force that urges the intermittent member 13 in the direction in which the intermittent portion 15 is disconnected, and is supported by the support portion 31 so as to be positioned between the side gear 9 and the intermittent member 13. .

なお、サイドギヤ９は、受け面２１の内径側において、互いの支持部１０を介してデフケース３に支持されており、断続部材１３は、その外周面をデフケース３の内周面との間に形成された互いの支持部１４で支持されている。このように空間部２９の位置に対して、支持部１０を内径側に、支持部１４を外径側に配置形成することにより、空間部２９の形成自由度を向上させることができ、付勢部材１９の形状設定を容易にし、断続部１５の断続特性を向上させることができる。   The side gear 9 is supported by the differential case 3 via the support portions 10 on the inner diameter side of the receiving surface 21, and the intermittent member 13 has an outer peripheral surface formed between the inner peripheral surface of the differential case 3. It is supported by the mutual support part 14 made. Thus, by forming the support portion 10 on the inner diameter side and the support portion 14 on the outer diameter side with respect to the position of the space portion 29, the degree of freedom in forming the space portion 29 can be improved, and the biasing force can be increased. The shape setting of the member 19 can be facilitated, and the intermittent characteristics of the intermittent portion 15 can be improved.

支持部３１は、径方向長さが付勢部２７以上に設定され、円板状の板材の内周部及び付勢部２７の基部に付勢部２７と連続する一部材で設けられている。この支持部３１の内周部はサイドギヤ９のボス部２５の外周に支持され、サイドギヤ９側の面はサイドギヤ９と摺動される。   The support portion 31 has a radial length that is set to be greater than or equal to the urging portion 27, and is provided as one member that is continuous with the urging portion 27 at the inner peripheral portion of the disk-shaped plate material and the base portion of the urging portion 27. . The inner peripheral portion of the support portion 31 is supported on the outer periphery of the boss portion 25 of the side gear 9, and the surface on the side gear 9 side slides with the side gear 9.

このような付勢部材１９の付勢部２７の内周とサイドギヤ９のボス部２５の外周との径方向の間には、空間部２９が設けられている。この空間部２９は、例えば、断続部１５の接続解除において、付勢部２７の付勢力を十分に得られないとき、付勢部２７を空間部２９へ径方向に延設させることにより、付勢部２７に対して大きな付勢力を与えさせることができる。このように空間部２９を設けることにより、付勢部材１９の付勢力を容易に変更させることができ、断続部１５の断続特性を容易に設計することができる。   A space portion 29 is provided between the inner periphery of the urging portion 27 of the urging member 19 and the outer periphery of the boss portion 25 of the side gear 9. For example, when the urging force of the urging portion 27 cannot be sufficiently obtained in the disconnection of the intermittent portion 15, the space portion 29 is attached by extending the urging portion 27 to the space portion 29 in the radial direction. A large urging force can be applied to the urging portion 27. By providing the space portion 29 in this manner, the urging force of the urging member 19 can be easily changed, and the intermittent characteristics of the intermittent portion 15 can be easily designed.

このようなデファレンシャル装置１では、デフケース３に設けられた受け面２１と規制面２３とが軸方向の突出長さが同一で連続する一部材で設けられているので、デフケース３の内部に凹凸部を設ける必要がなく、デフケース３の素材成形を簡易化することができる。   In such a differential device 1, since the receiving surface 21 and the regulating surface 23 provided on the differential case 3 are provided as one continuous member having the same axial protruding length, an uneven portion is provided inside the differential case 3. Therefore, it is possible to simplify the material molding of the differential case 3.

また、ボス部２５の外周と断続部１５の内周との径方向の間に配置された付勢部材１９の付勢部２７の内周とボス部２５の外周との径方向の間に空間部２９が設けられているので、空間部２９に対して付勢部２７の設計変更を容易に行うことができ、断続部１５に合わせた付勢部材１９の設計の自由度を向上することができる。   Further, a space is provided between the inner circumference of the urging portion 27 of the urging member 19 and the outer circumference of the boss portion 25 arranged between the outer circumference of the boss portion 25 and the inner circumference of the intermittent portion 15. Since the portion 29 is provided, the design of the biasing portion 27 can be easily changed with respect to the space portion 29, and the degree of freedom in designing the biasing member 19 in accordance with the intermittent portion 15 can be improved. it can.

従って、デフケース３を容易に製造させることができ、且つ断続部１５の断続特性を向上させることができる。   Therefore, the differential case 3 can be easily manufactured, and the intermittent characteristics of the intermittent part 15 can be improved.

また、付勢部材１９が径方向長さが付勢部２７以上に設定された支持部３１を有するので、付勢部２７の設計の自由度を確保しつつ、付勢部材１９を安定して支持することができ、断続部１５の断続特性を安定させることができる。   Further, since the urging member 19 includes the support portion 31 whose radial length is set to be greater than or equal to the urging portion 27, the urging member 19 can be stably maintained while ensuring the degree of freedom in designing the urging portion 27. Therefore, the intermittent characteristics of the intermittent portion 15 can be stabilized.

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、アクチュエータに電磁式アクチュエータを適用しているが、磁性流体、電動モータ、油圧シリンダ−ピストンなど断続部を断続できる構成であれば、アクチュエータはどのような形態であってもよい。   In the differential device according to the embodiment of the present invention, an electromagnetic actuator is applied to the actuator. However, any actuator can be used as long as it can be intermittently connected such as a magnetic fluid, an electric motor, and a hydraulic cylinder-piston. Such a form may be sufficient.

また、断続部に噛み合いクラッチを適用しているが、摩擦クラッチ、粘性流体クラッチ、流体ポンプ抵抗を用いたクラッチなど断続部は種々の形態を採用することができる。   Further, although the meshing clutch is applied to the intermittent portion, various forms can be adopted for the intermittent portion such as a friction clutch, a viscous fluid clutch, and a clutch using a fluid pump resistor.

なお、本発明の特徴の一部となる「受け面と規制面とを径方向に延設された同一平面で形成され」とは、加工時又は組付け後に多少の段差が生じていた構成だとしても、従来のように凹凸部としての課題を有する構造と著しくかけ離れた構造、すなわち、本発明の利点を共有する構成であれば、本発明の技術思想を具備するものとして構成されることは当業者であれば理解できよう。   In addition, “the receiving surface and the regulating surface are formed in the same plane extending in the radial direction”, which is a part of the feature of the present invention, is a configuration in which some steps are generated during processing or after assembly. However, if it is a structure that is significantly different from the conventional structure having a problem as an uneven part, that is, a structure that shares the advantages of the present invention, it can be configured to have the technical idea of the present invention. Those skilled in the art will understand.

本発明の実施の形態に係るデファレンシャル装置の断面図である。It is sectional drawing of the differential apparatus which concerns on embodiment of this invention. 本発明の実施の形態に係るケース本体にサイドギヤを組付けたときの断面図である。It is sectional drawing when a side gear is assembled | attached to the case main body which concerns on embodiment of this invention. 本発明の実施の形態に係るケース本体の断面図である。It is sectional drawing of the case main body which concerns on embodiment of this invention. （ａ）本発明の実施の形態に係る付勢部材の正面図である。（ｂ）図４（ａ）の側面図である。(A) It is a front view of the urging member concerning an embodiment of the invention. (B) It is a side view of Fig.4 (a).

符号の説明Explanation of symbols

１…デファレンシャル装置
３…デフケース
５…ピニオン
７，９…サイドギヤ（出力部材）
１１…差動機構
１３…断続部材
１５…断続部
１７…アクチュエータ
１９…付勢部材
２１…受け面
２３…規制面
２５…ボス部（筒状部）
２７…付勢部
２９…空間部
３１…支持部 DESCRIPTION OF SYMBOLS 1 ... Differential apparatus 3 ... Differential case 5 ... Pinion 7, 9 ... Side gear (output member)
DESCRIPTION OF SYMBOLS 11 ... Differential mechanism 13 ... Intermittent member 15 ... Intermittent part 17 ... Actuator 19 ... Energizing member 21 ... Receiving surface 23 ... Restricting surface 25 ... Boss part (cylindrical part)
27 ... Biasing part 29 ... Space part 31 ... Supporting part

Claims (2)

駆動トルクが入力されるデフケースと、このデフケースに支承されて自転可能であると共に前記デフ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出力部材と、前記デフケースと前記ピニオンと前記一対の出力部材とを備えた差動機構と、前記デフケースと一体回転可能に支持された断続部材と、この断続部材と前記出力部材のいずれか一方の出力部材との間に設けられ前記差動機構の差動を断続する断続部と、この断続部を作動させるアクチュエータと、前記断続部材を前記断続部の接続解除方向に付勢する付勢部材とを備えたデファレンシャル装置であって、
前記デフケースには、前記一対の出力部材の軸方向に掛かる噛み合い反力を受ける受け面と、前記断続部材の軸方向の移動を規制する規制面とが設けられ、前記受け面と前記規制面とは、径方向に延設された同一平面で形成され、前記一方の出力部材は、前記ピニオンとの噛み合い部側から軸方向に前記受け面側に向けて延設された小径の筒状部を有し、前記付勢部材は、前記筒状部の外周と前記断続部の内周との径方向の間に配置され前記断続部材に付勢力を付与する付勢部を有し、前記筒状部の外周と前記付勢部の内周との径方向の間には、空間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。 A differential case to which driving torque is input, a pinion supported by the differential case and capable of rotating, and revolved by the rotation of the differential case, a pair of output members meshing with the pinion and relatively rotatable, the differential case and the pinion And a pair of output members, an intermittent member supported to be rotatable integrally with the differential case, and the intermittent member and the output member provided between the output member and the output member. A differential device comprising: an intermittent portion for interrupting the differential of the differential mechanism; an actuator for operating the intermittent portion; and an urging member for urging the intermittent member in a connection release direction of the intermittent portion,
The differential case is provided with a receiving surface that receives a meshing reaction force applied in the axial direction of the pair of output members, and a restricting surface that restricts the axial movement of the intermittent member, and the receiving surface and the restricting surface Is formed in the same plane extending in the radial direction, and the one output member includes a small-diameter cylindrical portion extending from the meshing portion side with the pinion toward the receiving surface side in the axial direction. The biasing member is disposed between the outer periphery of the cylindrical portion and the inner periphery of the intermittent portion, and has a biasing portion that applies a biasing force to the intermittent member; A differential device is characterized in that a space portion is provided between the outer circumference of the portion and the inner circumference of the urging portion. 請求項１記載のデファレンシャル装置であって、
前記付勢部材は、径方向長さが前記付勢部以上に設定された支持部を有し、この支持部は、前記筒状部の外周に支持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 urging member has a support portion whose radial length is set to be greater than or equal to the urging portion, and the support portion is supported on the outer periphery of the cylindrical portion.
JP2008257543A 2008-10-02 2008-10-02 Differential device Pending JP2010084930A (en)

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US9989140B2 (en) 2016-03-02 2018-06-05 Jtekt Corporation Power transmission interrupting device and limited-slip differential
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