JP2022152824A - transmission - Google Patents

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JP2022152824A
JP2022152824A JP2021055751A JP2021055751A JP2022152824A JP 2022152824 A JP2022152824 A JP 2022152824A JP 2021055751 A JP2021055751 A JP 2021055751A JP 2021055751 A JP2021055751 A JP 2021055751A JP 2022152824 A JP2022152824 A JP 2022152824A
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axial direction
friction material
gear
bearing
shaft member
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裕紀 市川
Yuki Ichikawa
孝之 土井
Takayuki Doi
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Aisin Corp
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Abstract

To improve controllability of a friction engagement device while suppressing enlargement of the whole device, in a transmission comprising the friction engagement device.SOLUTION: A first pressing member (45) rotates integrally with a first support member (41) and is supported so as to be movable in an axial direction (L), and presses a pair of friction materials (43, 44) from a first side (L1) in the axial direction. A second pressing member (46) is supported so as to be movable in the axial direction (L) with respect to a case (6), and presses the first pressing member (45) from the first side (L1) in the axial direction while being rotatable relative to the first pressing member (45). An arrangement area (D3) in the axial direction (L) of the second pressing member (46) overlaps with both of an arrangement area (D1) in the axial direction (L) of a first bearing (92) that rotatably supports a first shaft member (10), and an arrangement area (D2) in the axial direction (L) of a second bearing (93) that rotatably supports a second shaft member (20).SELECTED DRAWING: Figure 4

Description

本発明は、変速機に関する。 The present invention relates to transmissions.

少なくとも1つのギヤを支持する第1軸部材と、少なくとも1つのギヤを支持する第2軸部材と、噛み合い式係合装置と、摩擦係合装置とを備える変速機が利用されている。このような変速機の一例が、特表2016-516161号公報(特許文献1)に開示されている。 Transmissions are utilized that include a first shaft member that supports at least one gear, a second shaft member that supports at least one gear, a mesh engagement device, and a friction engagement device. An example of such a transmission is disclosed in Japanese Patent Publication No. 2016-516161 (Patent Document 1).

特許文献1の変速機では、噛み合い式係合装置(形状接合型シフト要素5)が第3ギヤ(遊び歯車7)及び第4ギヤ(遊び歯車8)のいずれか一方を第2軸部材(入力軸2)に対して選択的に連結することで、2段変速が可能となっている。変速段の切り替えに際しては、その切り替えを円滑に行うため、摩擦係合装置(摩擦接合型シフト要素6)を係合させることによって回転の同期制御を行っている。 In the transmission of Patent Document 1, the meshing engagement device (form-fitting shift element 5) shifts either one of the third gear (idle gear 7) and the fourth gear (idle gear 8) to the second shaft member (input A two-speed transmission is possible by selectively connecting to the shaft 2). In order to switch gears smoothly, synchronous control of rotation is performed by engaging a friction engagement device (friction-bonded shift element 6).

ところで、摩擦係合装置を構成する押圧部材(ピストン)は、回転体である第1支持部材(クラッチハブ)に支持される場合が多い。このような場合、回転に伴い、押圧部材を駆動するための作動油に遠心油圧が加わる結果、油圧のばらつきが大きくなってしまい、摩擦係合装置の制御性が悪くなるという問題があった。一方、摩擦係合装置の制御性を向上させるために装置全体が大型化してしまうことは極力避けたいという一般的な課題も存在する。 By the way, the pressing member (piston) that constitutes the frictional engagement device is often supported by the first supporting member (clutch hub) that is a rotating body. In such a case, as a result of centrifugal hydraulic pressure being added to the hydraulic fluid for driving the pressing member as it rotates, there is a problem that the hydraulic pressure varies greatly and the controllability of the friction engagement device deteriorates. On the other hand, there is also a general problem that it is desirable to avoid increasing the size of the entire device as much as possible in order to improve the controllability of the frictional engagement device.

特表2016-516161号公報Japanese Patent Publication No. 2016-516161

そこで、摩擦係合装置を備えた変速機において、装置全体の大型化を抑えつつ摩擦係合装置の制御性を向上させることが望まれている。 Therefore, in a transmission equipped with a frictional engagement device, it is desired to improve the controllability of the frictional engagement device while suppressing an increase in the size of the entire device.

本開示に係る変速機は、
少なくとも1つのギヤを支持する第1軸部材と、
前記第1軸部材と平行に配置され、少なくとも1つのギヤを支持する第2軸部材と、
前記第2軸部材と同軸上に配置された摩擦係合装置と、
前記第1軸部材、前記第2軸部材、及び前記摩擦係合装置を収容するケースと、
前記ケースに対して前記第1軸部材を回転可能に支持する第1軸受と、
前記ケースに対して前記第2軸部材を回転可能に支持する第2軸受と、を備え、
前記摩擦係合装置は、第1支持部材、第2支持部材、第1摩擦材、第2摩擦材、第1押圧部材、第2押圧部材、及び押圧駆動部を備え、
前記第1支持部材は、回転可能に支持され、前記第1摩擦材を支持する第1摩擦材支持部を備え、
前記第2支持部材は、前記第1支持部材とは独立して回転可能に支持され、前記第2摩擦材を支持する第2摩擦材支持部を備え、
前記第2摩擦材支持部は、前記第1摩擦材支持部よりも径方向の外側に、前記第1摩擦材支持部と同軸に配置され、
前記第1摩擦材は、前記第1摩擦材支持部と一体的に回転するように連結され、
前記第2摩擦材は、前記第2摩擦材支持部と一体的に回転するように連結され、
前記第1軸部材及び前記第2軸部材と平行な方向を軸方向とするとともに、前記軸方向の一方側を軸方向第1側として、
前記第1摩擦材及び前記第2摩擦材は、前記第1摩擦材支持部と前記第2摩擦材支持部との前記径方向の間において、互いに前記軸方向に対向するように配置され、
前記第1押圧部材は、前記第1支持部材と一体的に回転するとともに当該第1支持部材に対して前記軸方向に移動自在に支持され、前記第1摩擦材と前記第2摩擦材とを互いに押し付けるように前記第1摩擦材及び前記第2摩擦材を前記軸方向第1側から押圧し、
前記第2押圧部材は、前記ケースに対して前記軸方向に移動自在に支持され、前記第1押圧部材と相対回転自在な状態で当該第1押圧部材を前記軸方向第1側から押圧し、
前記押圧駆動部は、前記第2押圧部材を前記軸方向に駆動し、
前記第2押圧部材は、前記第2軸受に対して前記径方向の外側であって、周方向における一部が前記第1軸受と前記第2軸受との間に配置され、
前記第2押圧部材の前記軸方向における配置領域が、前記第1軸受の前記軸方向における配置領域及び前記第2軸受の前記軸方向における配置領域の双方に重複している。
A transmission according to the present disclosure includes:
a first shaft member supporting at least one gear;
a second shaft member arranged parallel to the first shaft member and supporting at least one gear;
a friction engagement device arranged coaxially with the second shaft member;
a case that houses the first shaft member, the second shaft member, and the friction engagement device;
a first bearing that rotatably supports the first shaft member with respect to the case;
a second bearing that rotatably supports the second shaft member with respect to the case;
The friction engagement device includes a first support member, a second support member, a first friction member, a second friction member, a first pressure member, a second pressure member, and a pressure driving section,
the first support member includes a first friction material support portion that is rotatably supported and supports the first friction material;
The second support member is rotatably supported independently of the first support member, and includes a second friction material support portion that supports the second friction material,
The second friction material support portion is arranged radially outside the first friction material support portion and coaxially with the first friction material support portion,
The first friction material is connected to rotate integrally with the first friction material support,
The second friction material is connected to rotate integrally with the second friction material support,
A direction parallel to the first shaft member and the second shaft member is defined as an axial direction, and one side of the axial direction is defined as an axial direction first side,
The first friction material and the second friction material are arranged to face each other in the axial direction between the first friction material support portion and the second friction material support portion in the radial direction,
The first pressing member rotates integrally with the first supporting member and is supported by the first supporting member so as to be movable in the axial direction, and presses the first friction material and the second friction material. pressing the first friction material and the second friction material from the axial direction first side so as to press them against each other;
The second pressing member is supported movably in the axial direction with respect to the case, and presses the first pressing member from the first side in the axial direction while being rotatable relative to the first pressing member;
The pressing drive unit drives the second pressing member in the axial direction,
the second pressing member is disposed outside the second bearing in the radial direction and partially between the first bearing and the second bearing in the circumferential direction;
The axial arrangement area of the second pressing member overlaps both the axial arrangement area of the first bearing and the axial arrangement area of the second bearing.

この構成によれば、摩擦係合装置が、単一の押圧部材を備えるのではなく、互いに相対回転する第1押圧部材と第2押圧部材とを備え、押圧駆動部によって軸方向に駆動される方の第2押圧部材が非回転部材であるケースに対して軸方向に移動自在に支持される。これにより、第2押圧部材を駆動するための作動油は回転せず遠心油圧も加わらないため、摩擦係合装置の制御性を向上させることができる。このとき、第1軸部材や第2軸部材を回転可能に支持するための第1軸受及び第2軸受との関係で、第2押圧部材の軸方向の配置領域を第1軸受の軸方向の配置領域及び第2軸受の軸方向の配置領域の双方と重複させることで、変速機の軸方向寸法を小さく抑えやすい。制御性向上のために摩擦係合装置が第1押圧部材と第2押圧部材とを備えるように構成しながら、第1軸受と第2軸受との間のスペースを利用して第2押圧部材を配置して、装置全体の大型化を抑制することができる。 According to this configuration, the friction engagement device does not include a single pressing member, but includes the first pressing member and the second pressing member that rotate relative to each other, and are driven in the axial direction by the pressing drive section. One of the second pressing members is axially movably supported by the case, which is a non-rotating member. As a result, since the hydraulic oil for driving the second pressing member does not rotate and the centrifugal hydraulic pressure is not applied, the controllability of the friction engagement device can be improved. At this time, in relation to the first bearing and the second bearing for rotatably supporting the first shaft member and the second shaft member, the axial arrangement area of the second pressing member is the axial direction of the first bearing. By overlapping both the arrangement area and the axial arrangement area of the second bearing, it is easy to keep the axial dimension of the transmission small. In order to improve controllability, the frictional engagement device is configured to include a first pressing member and a second pressing member, and the space between the first bearing and the second bearing is utilized to provide the second pressing member. By arranging them, it is possible to suppress an increase in the size of the entire device.

本開示に係る技術のさらなる特徴と利点は、図面を参照して記述する以下の例示的かつ非限定的な実施形態の説明によってより明確になるであろう。 Further features and advantages of the technology according to the present disclosure will become clearer from the following description of exemplary and non-limiting embodiments described with reference to the drawings.

実施形態の車両用駆動装置のスケルトン図1 is a skeleton diagram of a vehicle drive system according to an embodiment; 車両用駆動装置の断面図Cross-sectional view of a vehicle drive system 車両用駆動装置の拡大断面図Enlarged cross-sectional view of vehicle drive system 車両用駆動装置の拡大断面図Enlarged cross-sectional view of vehicle drive system 車両用駆動装置を軸方向から見た模式図Schematic diagram of the vehicle drive unit viewed from the axial direction

摩擦係合装置を含む変速機を備えた車両用駆動装置の実施形態について、図面を参照して説明する。図1及び図2に示すように、本実施形態の車両用駆動装置100は、概略的には、変速機1と、回転電機2と、差動歯車機構3と、それぞれが車輪Wに駆動連結される一対の出力部材4とを備えている。また、変速機1は、第1ギヤ12及び第2ギヤ14を備えた第1軸部材10と、第3ギヤ22及び第4ギヤ24を支持するとともに出力ギヤ25を備えた第2軸部材20と、噛み合い式係合装置30と、摩擦係合装置40とを備えている。これらは、ケース(駆動装置ケース)6内に収容されている。なお、出力部材4の一部は、ケース6の外部に露出している。 An embodiment of a vehicle drive system including a transmission including a friction engagement device will be described with reference to the drawings. As shown in FIGS. 1 and 2, the vehicle drive device 100 of this embodiment generally includes a transmission 1, a rotating electrical machine 2, and a differential gear mechanism 3, each of which is drivingly connected to a wheel W. A pair of output members 4 are provided. The transmission 1 also includes a first shaft member 10 having a first gear 12 and a second gear 14, and a second shaft member 20 supporting a third gear 22 and a fourth gear 24 and having an output gear 25. , a mesh type engagement device 30 and a friction engagement device 40 . These are housed in a case (driving device case) 6 . A part of the output member 4 is exposed outside the case 6 .

ここで、「回転電機」は、モータ(電動機)、ジェネレータ(発電機)、及び必要に応じてモータ及びジェネレータの双方の機能を果たすモータ・ジェネレータのいずれをも含む概念として用いている。 Here, the term "rotary electric machine" is used as a concept including motors (electric motors), generators (generators), and motor generators that function as both motors and generators as necessary.

また、「駆動連結」とは、2つの回転要素が駆動力を伝達可能に連結された状態を意味する。この概念には、2つの回転要素が一体回転するように連結された状態や、2つの回転要素が1つ以上の伝動部材を介して駆動力を伝達可能に連結された状態が含まれる。このような伝動部材には、回転を同速で又は変速して伝達する各種の部材(軸、歯車機構、ベルト、チェーン等)が含まれ、回転及び駆動力を選択的に伝達する係合装置(摩擦係合装置や噛み合い式係合装置等)が含まれても良い。 In addition, the term "driving connection" means a state in which two rotating elements are connected so as to be able to transmit driving force. This concept includes a state in which two rotating elements are coupled to rotate together, and a state in which two rotating elements are coupled to transmit driving force via one or more transmission members. Such transmission members include various members (shafts, gear mechanisms, belts, chains, etc.) that transmit rotation at the same speed or at different speeds, and engagement devices that selectively transmit rotation and driving force. (friction engagement device, mesh engagement device, etc.) may be included.

回転電機2及び第1軸部材10は、第1軸X1上に配置されている。第2軸部材20、噛み合い式係合装置30、及び摩擦係合装置40は、第2軸X2上に配置されている。差動歯車機構3及び出力部材4は、第3軸X3上に配置されている。第1軸X1、第2軸X2、及び第3軸X3は、互いに異なる平行な軸であり、以下ではこれらに平行な方向を「軸方向L」と言う。また、軸方向Lの一方側(本例では図1における左側)を軸方向第1側L1と言い、その反対側である軸方向Lの他方側(本例では図1における右側)を軸方向第2側L2と言う。また、以下では、軸方向Lに沿って見た状態を「軸方向視」と言う。 The rotating electric machine 2 and the first shaft member 10 are arranged on the first axis X1. The second shaft member 20, meshing engagement device 30, and friction engagement device 40 are arranged on the second axis X2. The differential gear mechanism 3 and the output member 4 are arranged on the third axis X3. The first axis X1, the second axis X2, and the third axis X3 are mutually different parallel axes, and the direction parallel to them is hereinafter referred to as "axial direction L". Further, one side in the axial direction L (in this example, the left side in FIG. 1) is referred to as an axial direction first side L1, and the opposite side in the axial direction L (in this example, the right side in FIG. 1) is referred to as the axial direction. It is called the second side L2. Moreover, below, the state seen along the axial direction L is referred to as “axial view”.

回転電機2は、ケース6に固定されたステータ2Aと、このステータ2Aの径方向内側に回転自在に支持されたロータ2Bとを備えている。回転電機2は、蓄電装置(図示せず)から電力の供給を受けて力行し、或いは、車両の慣性力等によって発電した電力を蓄電装置に供給して蓄電させる。ロータ2Bは、ロータ軸2Cと一体的に回転するように連結されている。ロータ軸2Cは、軸方向Lの2箇所で、ロータ軸受91(図2を参照)によってケース6に対して回転自在に支持されている。ロータ軸2Cは、軸方向第1側L1の端部で、変速機1の第1軸部材10と一体的に回転するように連結されている。 The rotating electrical machine 2 includes a stator 2A fixed to the case 6 and a rotor 2B rotatably supported radially inward of the stator 2A. The rotary electric machine 2 is powered by being supplied with electric power from a power storage device (not shown), or supplied to the power storage device to store electric power generated by the inertia force of the vehicle or the like. The rotor 2B is connected to rotate integrally with the rotor shaft 2C. The rotor shaft 2C is rotatably supported with respect to the case 6 at two points in the axial direction L by rotor bearings 91 (see FIG. 2). The rotor shaft 2C is connected to the first shaft member 10 of the transmission 1 so as to rotate integrally at the end portion on the first side L1 in the axial direction.

変速機1は、回転電機2側からの回転を変速して車輪W側に伝達する。本実施形態の変速機1は、第1ギヤ12及び第2ギヤ14を備えた第1軸部材10と、第3ギヤ22及び第4ギヤ24を支持するとともに出力ギヤ25を備えた第2軸部材20と、噛み合い式係合装置30と、摩擦係合装置40とを備えている。噛み合い式係合装置30が、第3ギヤ22及び第4ギヤ24のいずれか一方を第2軸部材20に対して選択的に連結することで、変速機1は、回転電機2側からの回転を2段階に変速して車輪W側に伝達することができる。摩擦係合装置40は、噛み合い式係合装置30が第4ギヤ24を第2軸部材20に対して連結する際に、係合状態となることで、第4ギヤ24と第2軸部材20との回転速度を同期させる。 The transmission 1 changes the speed of the rotation from the rotary electric machine 2 side and transmits it to the wheel W side. The transmission 1 of this embodiment includes a first shaft member 10 having a first gear 12 and a second gear 14, and a second shaft member 10 supporting a third gear 22 and a fourth gear 24 and having an output gear 25. It comprises a member 20 , a meshing engagement device 30 and a friction engagement device 40 . The gear engagement device 30 selectively connects either the third gear 22 or the fourth gear 24 to the second shaft member 20, so that the transmission 1 is rotated from the rotating electric machine 2 side. can be shifted in two stages and transmitted to the wheel W side. The friction engagement device 40 is engaged when the meshing engagement device 30 connects the fourth gear 24 to the second shaft member 20 , so that the fourth gear 24 and the second shaft member 20 are engaged. Synchronize the rotation speed with

本実施形態では、噛み合い式係合装置30は、軸方向Lにおいて、第3ギヤ22と第4ギヤ24との間に配置されている。また、摩擦係合装置40は、第3ギヤ22及び第4ギヤ24に対して軸方向第1側L1に配置されている。また、出力ギヤ25は、第3ギヤ22及び第4ギヤ24に対して軸方向第2側L2に配置されている。 In this embodiment, the meshing engagement device 30 is arranged between the third gear 22 and the fourth gear 24 in the axial direction L. As shown in FIG. Also, the friction engagement device 40 is arranged on the first side L1 in the axial direction with respect to the third gear 22 and the fourth gear 24 . Also, the output gear 25 is arranged on the second side L2 in the axial direction with respect to the third gear 22 and the fourth gear 24 .

差動歯車機構3は、差動入力ギヤ3Aを備えており、この差動入力ギヤ3Aに入力される変速機1側からの回転及びトルクを、一対の出力部材4に分配して伝達する。一対の出力部材4は、それぞれが車輪Wに駆動連結されている。このように、回転電機2の側から伝達される回転が、変速機1を介して差動歯車機構3に伝達され、さらに差動歯車機構3により一対の出力部材4に分配され、さらに一対の車輪Wに伝達される。これにより、車両用駆動装置100は、回転電機2のトルクを車輪Wに伝達させて車両を走行させることができる。 The differential gear mechanism 3 has a differential input gear 3A, and the rotation and torque from the transmission 1 side input to the differential input gear 3A are distributed to the pair of output members 4 and transmitted. The pair of output members 4 are drivingly connected to the wheels W, respectively. In this way, the rotation transmitted from the rotating electrical machine 2 side is transmitted to the differential gear mechanism 3 via the transmission 1, further distributed to the pair of output members 4 by the differential gear mechanism 3, and further to the pair of It is transmitted to the wheels W. Accordingly, the vehicle drive device 100 can transmit the torque of the rotary electric machine 2 to the wheels W to drive the vehicle.

図2に示すように、ケース6は、第1ケース部6Aと第2ケース部6Bと第3ケース部6Cとを備えている。第1ケース部6Aは、第2ケース部6Bに対して軸方向第1側L1から接合されている。第1ケース部6Aは、変速機1及び差動歯車機構3を収容している。第1ケース部6Aは、変速機1及び差動歯車機構3の径方向外側を覆う第1周壁部6Aaと、変速機1及び差動歯車機構3の軸方向第1側L1を覆う第1支持壁部6Abとを備えている。第2ケース部6Bは回転電機2を収容している。第2ケース部6Bは、回転電機2の径方向外側を覆う第2周壁部6Baと、回転電機2の軸方向第1側L1を覆う第2支持壁部6Bbとを備えている。図示の例では、変速機1及び差動歯車機構3の一部も、第2ケース部6Bに収容されている。第3ケース部6Cは、第1ケース部6A及び第2ケース部6Bの内部で、変速機1及び差動歯車機構3の収容空間と回転電機2の収容空間とを区画している。 As shown in FIG. 2, the case 6 includes a first case portion 6A, a second case portion 6B, and a third case portion 6C. The first case portion 6A is joined to the second case portion 6B from the axial first side L1. The first case portion 6A houses the transmission 1 and the differential gear mechanism 3 . The first case portion 6A includes a first peripheral wall portion 6Aa that covers the radially outer side of the transmission 1 and the differential gear mechanism 3, and a first support that covers the first axial side L1 of the transmission 1 and the differential gear mechanism 3. and a wall portion 6Ab. The second case portion 6B accommodates the rotating electrical machine 2 . The second case portion 6B includes a second peripheral wall portion 6Ba that covers the radially outer side of the rotating electric machine 2, and a second support wall portion 6Bb that covers the first side L1 of the rotating electric machine 2 in the axial direction. In the illustrated example, parts of the transmission 1 and the differential gear mechanism 3 are also accommodated in the second case portion 6B. The third case portion 6C divides the housing space for the transmission 1 and the differential gear mechanism 3 and the housing space for the rotary electric machine 2 inside the first case portion 6A and the second case portion 6B.

図2及び図3に示すように、変速機1は、第1ギヤ12及び第2ギヤ14を備えた第1軸部材10と、第3ギヤ22及び第4ギヤ24を支持するとともに出力ギヤ25を備えた第2軸部材20と、噛み合い式係合装置30と、摩擦係合装置40とを備えている。 As shown in FIGS. 2 and 3, the transmission 1 supports a first shaft member 10 having a first gear 12 and a second gear 14, a third gear 22 and a fourth gear 24, and an output gear 25. , a meshing engagement device 30, and a friction engagement device 40.

第1軸部材10は、変速機1の入力部材(変速入力部材)として機能する。第1軸部材10は、ロータ軸2Cに対して軸方向第1側L1に配置されている。第1軸部材10は、その軸方向第2側L2の端部がロータ軸2Cに挿入された状態で、当該ロータ軸2Cと一体的に回転するように連結されている。また、第1軸部材10は、軸方向Lの2箇所で、第1軸受92によってケース6に対して回転自在に支持されている。第1軸部材10は、軸方向第1側L1において、第1ケース部6Aに対して回転自在に支持され、軸方向第2側L2において、第3ケース部6Cに対して回転自在に支持されている。 The first shaft member 10 functions as an input member (transmission input member) of the transmission 1 . The first shaft member 10 is arranged on the axial first side L1 with respect to the rotor shaft 2C. The first shaft member 10 is connected to the rotor shaft 2C so as to rotate integrally with the rotor shaft 2C in a state in which the end portion on the axial second side L2 is inserted into the rotor shaft 2C. In addition, the first shaft member 10 is rotatably supported with respect to the case 6 at two locations in the axial direction L by first bearings 92 . The first shaft member 10 is rotatably supported with respect to the first case portion 6A on the first axial side L1, and rotatably supported with respect to the third case portion 6C at the second axial side L2. ing.

本実施形態では、第1ケース部6Aの第1支持壁部6Abには、軸方向第2側L2に突出する筒状の第1筒状支持部61が形成されている(図3を参照)。この第1筒状支持部61に、一対の第1軸受92のうちの1つが内嵌されている。 In the present embodiment, the first support wall portion 6Ab of the first case portion 6A is formed with a first cylindrical support portion 61 protruding to the second side L2 in the axial direction (see FIG. 3). . One of the pair of first bearings 92 is fitted inside the first cylindrical support portion 61 .

第1ギヤ12及び第2ギヤ14は、第1軸部材10と一体的に回転するように当該第1軸部材10に連結されている。本実施形態では、第1ギヤ12は、第1軸部材10の外周面に形成されている。第1ギヤ12は、第3ギヤ22に噛み合っている。また、第2ギヤ14は、第1軸部材10と一体的に回転するように当該第1軸部材10に連結された第2ギヤ形成部材13の外周面に形成されている。第2ギヤ14は、第4ギヤ24に噛み合っている。第2ギヤ14は、第1ギヤ12に対して、軸方向第1側L1に間隔を空けて配置されている。 The first gear 12 and the second gear 14 are connected to the first shaft member 10 so as to rotate integrally with the first shaft member 10 . In this embodiment, the first gear 12 is formed on the outer peripheral surface of the first shaft member 10 . The first gear 12 meshes with the third gear 22 . Further, the second gear 14 is formed on the outer peripheral surface of the second gear forming member 13 connected to the first shaft member 10 so as to rotate together with the first shaft member 10 . The second gear 14 meshes with the fourth gear 24 . The second gear 14 is spaced from the first gear 12 on the axial first side L1.

第2軸部材20は、第1軸部材10と平行に配置されている。第2軸部材20の軸方向Lの配置領域は、第1軸部材10の軸方向Lの配置領域に重複している。本実施形態では、第2軸部材20の軸方向Lの配置領域は、第1軸部材10の軸方向Lの配置領域に包含されている。また、第2軸部材20は、軸方向Lの2箇所で、第2軸受93によってケース6に対して回転自在に支持されている。第2軸部材20は、軸方向第1側L1において、第1ケース部6Aに対して回転自在に支持され、軸方向第2側L2において、第3ケース部6Cに対して回転自在に支持されている。 The second shaft member 20 is arranged parallel to the first shaft member 10 . The arrangement area in the axial direction L of the second shaft member 20 overlaps the arrangement area in the axial direction L of the first shaft member 10 . In this embodiment, the arrangement area in the axial direction L of the second shaft member 20 is included in the arrangement area in the axial direction L of the first shaft member 10 . Also, the second shaft member 20 is rotatably supported by the second bearings 93 at two points in the axial direction L with respect to the case 6 . The second shaft member 20 is rotatably supported with respect to the first case portion 6A on the first axial side L1, and rotatably supported with respect to the third case portion 6C at the second axial side L2. ing.

本実施形態では、第1ケース部6Aの第1支持壁部6Abには、軸方向第2側L2に突出する筒状の第2筒状支持部62が形成されている(図3を参照)。この第2筒状支持部62に、一対の第2軸受93のうちの1つが内嵌されている。 In the present embodiment, the first support wall portion 6Ab of the first case portion 6A is formed with a second cylindrical support portion 62 protruding to the second side L2 in the axial direction (see FIG. 3). . One of the pair of second bearings 93 is fitted inside the second cylindrical support portion 62 .

第3ギヤ22及び第4ギヤ24は、第2軸部材20と相対回転可能な状態で当該第2軸部材20に支持されている。本実施形態では、第3ギヤ22は、第2軸部材20に対して軸受を介して回転可能に支持された第3ギヤ形成部材21の外周面に形成されている。第3ギヤ22は、第1ギヤ12に噛み合っている。また、第4ギヤ24は、第2軸部材20に対して軸受を介して回転可能に支持された第4ギヤ形成部材23の外周面に形成されている。第4ギヤ24は、第2ギヤ14に噛み合っている。図示の例では、第3ギヤ形成部材21及び第4ギヤ形成部材23を支持する軸受には、針状ころ軸受が用いられている。 The third gear 22 and the fourth gear 24 are supported by the second shaft member 20 so as to be rotatable relative to the second shaft member 20 . In this embodiment, the third gear 22 is formed on the outer peripheral surface of the third gear forming member 21 rotatably supported by the second shaft member 20 via a bearing. The third gear 22 meshes with the first gear 12 . The fourth gear 24 is formed on the outer peripheral surface of a fourth gear forming member 23 rotatably supported on the second shaft member 20 via a bearing. The fourth gear 24 meshes with the second gear 14 . In the illustrated example, needle roller bearings are used for the bearings that support the third gear forming member 21 and the fourth gear forming member 23 .

なお、本実施形態では、第1ギヤ12は第2ギヤ14よりも小径であり、それに対応して、第3ギヤ22は第4ギヤ24よりも大径となっている。 In this embodiment, the first gear 12 has a smaller diameter than the second gear 14, and the third gear 22 has a larger diameter than the fourth gear 24 correspondingly.

出力ギヤ25は、第2軸部材20と一体的に回転するように当該第2軸部材20に連結されている。本実施形態では、出力ギヤ25は、第2軸部材20の外周面に形成されている。出力ギヤ25は、第3ギヤ22が形成された第3ギヤ形成部材21に対して軸方向第2側L2に隣接する位置に形成されている。出力ギヤ25は、変速機1の出力部材(変速出力部材)として機能する。出力ギヤ25は、差動歯車機構3の差動入力ギヤ3Aに噛み合っている。 The output gear 25 is connected to the second shaft member 20 so as to rotate together with the second shaft member 20 . In this embodiment, the output gear 25 is formed on the outer peripheral surface of the second shaft member 20 . The output gear 25 is formed at a position adjacent to the third gear forming member 21 on which the third gear 22 is formed, on the axial second side L2. The output gear 25 functions as an output member (transmission output member) of the transmission 1 . The output gear 25 meshes with the differential input gear 3A of the differential gear mechanism 3. As shown in FIG.

図3に示すように、噛み合い式係合装置30は、第1係合部31と、第2係合部32と、第3係合部33と、切替部材35とを備えている。 As shown in FIG. 3 , the meshing type engagement device 30 includes a first engagement portion 31 , a second engagement portion 32 , a third engagement portion 33 and a switching member 35 .

第1係合部31は、第2軸部材20と一体的に回転するように当該第2軸部材20に連結されている。本実施形態では、第1係合部31は、第2軸部材20と一体的に回転するように当該第2軸部材20に連結された連結部材31Aの外周面に形成されている。第1係合部31は、外歯の係合部となっている。 The first engaging portion 31 is connected to the second shaft member 20 so as to rotate together with the second shaft member 20 . In this embodiment, the first engaging portion 31 is formed on the outer peripheral surface of a connecting member 31A connected to the second shaft member 20 so as to rotate integrally with the second shaft member 20 . The first engaging portion 31 is an engaging portion for external teeth.

第2係合部32は、第3ギヤ22と一体的に回転するように当該第3ギヤ22に連結されている。本実施形態では、第2係合部32は、外周面に第3ギヤ22が形成された第3ギヤ形成部材21に形成されている。第2係合部32は、第1係合部31に対して軸方向第2側L2に隣接して配置されている。第2係合部32は、第1係合部31と同径同ピッチの外歯の係合部となっている。 The second engaging portion 32 is connected to the third gear 22 so as to rotate integrally with the third gear 22 . In this embodiment, the second engaging portion 32 is formed on the third gear forming member 21 having the third gear 22 formed on the outer peripheral surface. The second engaging portion 32 is arranged adjacent to the first engaging portion 31 on the axial second side L2. The second engaging portion 32 is an engaging portion of external teeth having the same diameter and the same pitch as the first engaging portion 31 .

第3係合部33は、第4ギヤ24と一体的に回転するように当該第4ギヤ24に連結されている。本実施形態では、第3係合部33は、外周面に第4ギヤ24が形成された第4ギヤ形成部材23に形成されている。第3係合部33は、第1係合部31に対して軸方向第1側L1に隣接して配置されている。第3係合部33は、第1係合部31及び第2係合部32と同径同ピッチの外歯の係合部となっている。 The third engaging portion 33 is connected to the fourth gear 24 so as to rotate integrally with the fourth gear 24 . In this embodiment, the third engaging portion 33 is formed on a fourth gear forming member 23 having a fourth gear 24 formed on its outer peripheral surface. The third engaging portion 33 is arranged adjacent to the first engaging portion 31 on the axial first side L1. The third engaging portion 33 is an engaging portion of external teeth having the same diameter and pitch as those of the first engaging portion 31 and the second engaging portion 32 .

切替部材35は、連結部材31Aの径方向Rの外側を覆う筒状に形成されている。そして、切替部材35の内周面には、それぞれが外歯の第1係合部31、第2係合部32、及び第3係合部33に噛み合う内歯の係合部が形成されている。切替部材35の内歯と第1係合部31、第2係合部32、及び第3係合部33の外歯とは、軸方向Lに相対移動可能、かつ、周方向に相対回転不能に係合する。 The switching member 35 is formed in a tubular shape covering the outside in the radial direction R of the connecting member 31A. The inner peripheral surface of the switching member 35 is formed with inner-toothed engaging portions that mesh with the first, second, and third outer-toothed engaging portions 31, 32, and 33, respectively. there is The internal teeth of the switching member 35 and the external teeth of the first engaging portion 31, the second engaging portion 32, and the third engaging portion 33 are movable relative to each other in the axial direction L, and relatively non-rotatable in the circumferential direction. to engage.

噛み合い式係合装置30は、切替部材35が第1係合部31及び第2係合部32の両方に係合した状態で、第3ギヤ22と第2軸部材20とを一体的に回転するように連結する。また、噛み合い式係合装置30は、切替部材35が第1係合部31及び第3係合部33の両方に係合した状態で、第4ギヤ24と第2軸部材20とを一体的に回転するように連結する。このようにして、噛み合い式係合装置30は、第3ギヤ22及び第4ギヤ24のいずれか一方を第2軸部材20に対して選択的に連結する。第3ギヤ22と第2軸部材20とが一体的に回転するように連結された状態で、回転電機2の駆動力は、互いに噛み合う第1ギヤ12と第3ギヤ22とを介して車輪W側に伝達される。一方、第4ギヤ24と第2軸部材20とが一体的に回転するように連結された状態で、回転電機2の駆動力は、互いに噛み合う第2ギヤ14と第4ギヤ24とを介して車輪W側に伝達される。 The meshing type engagement device 30 integrally rotates the third gear 22 and the second shaft member 20 while the switching member 35 is engaged with both the first engagement portion 31 and the second engagement portion 32. concatenate so that Further, the meshing type engaging device 30 integrally engages the fourth gear 24 and the second shaft member 20 in a state where the switching member 35 is engaged with both the first engaging portion 31 and the third engaging portion 33 . rotatably connected to In this manner, the meshing engagement device 30 selectively connects either one of the third gear 22 and the fourth gear 24 to the second shaft member 20 . In a state in which the third gear 22 and the second shaft member 20 are connected so as to rotate integrally, the driving force of the rotating electric machine 2 is applied to the wheels W via the first gear 12 and the third gear 22 that mesh with each other. transmitted to the side. On the other hand, in a state in which the fourth gear 24 and the second shaft member 20 are connected so as to rotate integrally, the driving force of the rotary electric machine 2 is transmitted through the second gear 14 and the fourth gear 24 that mesh with each other. It is transmitted to the wheel W side.

なお、切替部材35が第1係合部31に係合しているが、第2係合部32及び第3係合部33の両方に係合していない状態では、噛み合い式係合装置30は非係合状態(解放状態)となる。そして、噛み合い式係合装置30が非係合状態で、かつ、摩擦係合装置40も非係合状態では、変速機1は駆動力を伝達しないニュートラル状態となる。 In a state where the switching member 35 is engaged with the first engaging portion 31 but is not engaged with both the second engaging portion 32 and the third engaging portion 33, the meshing type engaging device 30 is in a disengaged state (released state). When the meshing engagement device 30 is in the non-engagement state and the friction engagement device 40 is also in the non-engagement state, the transmission 1 is in a neutral state in which no driving force is transmitted.

図3及び図4に示すように、摩擦係合装置40は、第1支持部材41と、第2支持部材42と、第1摩擦材43と、第2摩擦材44と、第1押圧部材45と、第2押圧部材46と、押圧駆動部49とを備えている。 As shown in FIGS. 3 and 4, the friction engagement device 40 includes a first support member 41, a second support member 42, a first friction member 43, a second friction member 44, and a first pressing member 45. , a second pressing member 46 , and a pressing driving portion 49 .

第1支持部材41は、第1摩擦材43を支持するための部材であり、回転可能に支持されている。第1支持部材41は、第1摩擦材支持部41Aと第1径方向延在部41Bと軸連結部41Cとを備えている。これらは、一体的に形成されている。第1摩擦材支持部41Aは、軸方向Lに沿う筒状に形成されており、第1摩擦材43を径方向Rの内側から支持している。第1摩擦材支持部41Aの外周面には、外歯が形成されている。第1径方向延在部41Bは、第1摩擦材支持部41Aから径方向Rの内側へ向けて延在している。本実施形態では、第1径方向延在部41Bは、第1摩擦材支持部41Aの軸方向第2側L2の端部から径方向Rの内側へ向けて延在している。 The first support member 41 is a member for supporting the first friction material 43 and is rotatably supported. The first support member 41 includes a first friction material support portion 41A, a first radially extending portion 41B, and a shaft connection portion 41C. These are integrally formed. The first friction material support portion 41A is formed in a tubular shape along the axial direction L, and supports the first friction material 43 from the inside in the radial direction R. External teeth are formed on the outer peripheral surface of the first friction material support portion 41A. The first radially extending portion 41B extends inward in the radial direction R from the first friction material supporting portion 41A. In this embodiment, the first radially extending portion 41B extends inward in the radial direction R from the end of the first friction material supporting portion 41A on the second axial side L2.

軸連結部41Cは、第1径方向延在部41Bの下端部から軸方向Lに延在している。軸連結部41Cは、軸方向Lに沿う筒状に形成されており、第2軸部材20に外挿されている。軸連結部41Cは、第2軸部材20と一体的に回転するように連結されている。これにより、第1支持部材41の全体が、第2軸部材20と一体的に回転するように連結されている。第1支持部材41を構成する各部のうち、第1径方向延在部41Bは、第1押圧部材45に対して軸方向第2側L2に配置されている。 The shaft connecting portion 41C extends in the axial direction L from the lower end portion of the first radially extending portion 41B. The shaft connecting portion 41</b>C is formed in a tubular shape along the axial direction L and is externally fitted on the second shaft member 20 . 41 C of shaft connection parts are connected so that the 2nd shaft member 20 and the 2nd shaft member 20 may rotate integrally. As a result, the entire first support member 41 is coupled to rotate integrally with the second shaft member 20 . Among the parts constituting the first support member 41, the first radially extending part 41B is arranged on the second side L2 in the axial direction with respect to the first pressing member 45. As shown in FIG.

第2支持部材42は、第2摩擦材44を支持するための部材であり、第1支持部材41とは独立して回転可能に支持されている。第2支持部材42は、第2摩擦材支持部42Aと第2径方向延在部42Bとを備えている。これらは、一体的に形成されている。第2摩擦材支持部42Aは、軸方向Lに沿う筒状に形成されており、第2摩擦材44を径方向Rの外側から支持している。第2摩擦材支持部42Aの内周面には、内歯が形成されている。第2摩擦材支持部42Aは、第1摩擦材支持部41Aよりも径方向Rの外側に、第1摩擦材支持部41Aと同軸に配置されている。 The second support member 42 is a member for supporting the second friction material 44 and is rotatably supported independently of the first support member 41 . The second support member 42 includes a second friction material support portion 42A and a second radially extending portion 42B. These are integrally formed. The second friction material support portion 42A is formed in a tubular shape along the axial direction L, and supports the second friction material 44 from the outside in the radial direction R. Internal teeth are formed on the inner peripheral surface of the second friction material support portion 42A. The second friction material support portion 42A is arranged coaxially with the first friction material support portion 41A outside the first friction material support portion 41A in the radial direction R.

第2径方向延在部42Bは、第2摩擦材支持部42Aから径方向Rの内側へ向けて延在している。本実施形態では、第2径方向延在部42Bは、第2摩擦材支持部42Aの軸方向第2側L2の端部から径方向Rの内側へ向けて延在している。第2径方向延在部42Bは、第1径方向延在部41Bに対して軸方向第2側L2に隣接して配置されている。また、第2径方向延在部42Bは、第4ギヤ形成部材23に対して軸方向第1側L1に隣接して配置されている。第2径方向延在部42Bは、第4ギヤ24が形成された第4ギヤ形成部材23と一体的に回転するように連結されている。これにより、第2支持部材42の全体が、第4ギヤ24と一体的に回転するように連結されている。 The second radially extending portion 42B extends inward in the radial direction R from the second friction material supporting portion 42A. In this embodiment, the second radially extending portion 42B extends inward in the radial direction R from the end of the second friction material supporting portion 42A on the second axial side L2. The second radially extending portion 42B is arranged adjacent to the first radially extending portion 41B on the axial second side L2. Further, the second radially extending portion 42B is arranged adjacent to the fourth gear forming member 23 on the axial first side L1. The second radially extending portion 42B is connected to rotate integrally with the fourth gear forming member 23 on which the fourth gear 24 is formed. As a result, the entire second support member 42 is coupled to rotate integrally with the fourth gear 24 .

第1摩擦材43は、軸方向Lに複数枚並んで配置されている。それぞれの第1摩擦材43の内周面には、第1摩擦材支持部41Aの外歯に噛み合う内歯が形成されている。第1摩擦材43は、第1摩擦材支持部41Aの外周面に、当該第1摩擦材支持部41Aに対して軸方向Lに相対移動可能、かつ、周方向に相対回転不能に支持されている。 A plurality of first friction members 43 are arranged side by side in the axial direction L. As shown in FIG. Internal teeth that mesh with the external teeth of the first friction material support portion 41A are formed on the inner peripheral surface of each first friction material 43 . The first friction material 43 is supported on the outer peripheral surface of the first friction material support portion 41A so as to be movable relative to the first friction material support portion 41A in the axial direction L and non-rotatable in the circumferential direction. there is

第2摩擦材44は、軸方向Lに複数枚並んで配置されている。第1摩擦材43と第2摩擦材44とは、軸方向Lに交互に配置されており、互いに軸方向Lに対向するように配置されている。それぞれの第2摩擦材44の外周面には、第2摩擦材支持部42Aの内歯に噛み合う外歯が形成されている。第2摩擦材44は、第2摩擦材支持部42Aの内周面に、当該第2摩擦材支持部42Aに対して軸方向Lに相対移動可能、かつ、周方向に相対回転不能に支持されている。 A plurality of second friction members 44 are arranged side by side in the axial direction L. As shown in FIG. The first friction members 43 and the second friction members 44 are alternately arranged in the axial direction L and are arranged so as to face each other in the axial direction L. As shown in FIG. External teeth that mesh with the internal teeth of the second friction material support portion 42A are formed on the outer peripheral surface of each second friction material 44 . The second friction material 44 is supported on the inner peripheral surface of the second friction material support portion 42A so as to be movable relative to the second friction material support portion 42A in the axial direction L and non-rotatable in the circumferential direction. ing.

第1押圧部材45は、第2押圧部材46と協働して、第1摩擦材43と第2摩擦材44とを互いに押し付けるように押圧する。第1押圧部材45は、第1摩擦材43及び第2摩擦材44に対して軸方向第1側L1に配置されている。第1押圧部材45は、第1摩擦材支持部41Aの外歯に噛み合う内歯を備えており、第1摩擦材支持部41Aに対して軸方向Lに相対移動可能、かつ、周方向に相対回転不能に支持されている。こうして、第1押圧部材45は、第1支持部材41と一体的に回転するとともに当該第1支持部材41に対して軸方向Lに移動自在に支持されている。第1押圧部材45は、第2押圧部材46を介して押圧駆動部49により軸方向Lに駆動された場合に、第1摩擦材43及び第2摩擦材44を軸方向第1側L1から押圧して第1摩擦材43と第2摩擦材44とを互いに圧接する。 The first pressing member 45 cooperates with the second pressing member 46 to press the first friction member 43 and the second friction member 44 against each other. The first pressing member 45 is arranged on the first side L1 in the axial direction with respect to the first friction material 43 and the second friction material 44 . The first pressing member 45 has internal teeth that mesh with the external teeth of the first friction material support portion 41A, is movable relative to the first friction material support portion 41A in the axial direction L, and is circumferentially relative to the first friction material support portion 41A. Non-rotatably supported. Thus, the first pressing member 45 rotates integrally with the first support member 41 and is supported so as to be movable in the axial direction L with respect to the first support member 41 . The first pressing member 45 presses the first friction member 43 and the second friction member 44 from the first axial side L1 when driven in the axial direction L by the pressing driving portion 49 via the second pressing member 46. Then, the first friction material 43 and the second friction material 44 are brought into pressure contact with each other.

第1押圧部材45は、摺動部45Aと押圧部45Bとを備えている。摺動部45Aは、第1摩擦材支持部41Aよりも径方向Rの内側に配置されており、当該第1摩擦材支持部41Aの内周面に沿って摺動する。本実施形態では、摺動部45Aにおける第1摩擦材支持部41Aの内周面に対向する面(摺動対向面)と第1摩擦材支持部41Aの内周面との間に、シール部材51が配置されている。摺動部45Aは、径方向Rに沿って延在するように形成されている。本例では、摺動部45Aは、第1摩擦材支持部41Aと第1支持部材41の軸連結部41Cとに亘るように径方向Rに沿って形成されている。また、摺動部45Aは、保持部材47によって保持された付勢部材48によって、軸方向第1側L1に向けて付勢されている。付勢部材48は、軸方向Lにおける、第1摩擦材43と第2摩擦材44とを互いに押し付ける側とは反対側へ向けて第1押圧部材45を付勢する。このような付勢部材48として、本実施形態ではリターンスプリングが用いられている。 The first pressing member 45 includes a sliding portion 45A and a pressing portion 45B. The sliding portion 45A is arranged inside the first friction material support portion 41A in the radial direction R, and slides along the inner peripheral surface of the first friction material support portion 41A. In this embodiment, a seal member is provided between the surface of the sliding portion 45A facing the inner peripheral surface of the first friction material support portion 41A (sliding facing surface) and the inner peripheral surface of the first friction material support portion 41A. 51 are arranged. 45 A of sliding parts are formed so that it may extend along the radial direction R. As shown in FIG. In this example, the sliding portion 45A is formed along the radial direction R so as to extend over the first friction material support portion 41A and the shaft connection portion 41C of the first support member 41 . Further, the sliding portion 45A is biased toward the first side L1 in the axial direction by a biasing member 48 held by a holding member 47 . The biasing member 48 biases the first pressing member 45 toward the side opposite to the side in the axial direction L that presses the first friction member 43 and the second friction member 44 against each other. A return spring is used as such an urging member 48 in this embodiment.

押圧部45Bは、摺動部45Aから径方向Rの外側に延びている。押圧部45Bは、第1摩擦材支持部41Aよりも径方向Rの外側に配置されている。押圧部45Bは、第1摩擦材支持部41Aと第2摩擦材支持部42Aとの径方向Rの間に配置される部分を有するように形成されている。押圧部45Bは、摺動部45Aと一体的に軸方向Lに沿って移動して、第1摩擦材43及び第2摩擦材44を押圧する。 The pressing portion 45B extends outward in the radial direction R from the sliding portion 45A. The pressing portion 45B is arranged outside in the radial direction R of the first friction material supporting portion 41A. The pressing portion 45B is formed to have a portion arranged between the first friction material supporting portion 41A and the second friction material supporting portion 42A in the radial direction R. The pressing portion 45B moves together with the sliding portion 45A along the axial direction L to press the first friction member 43 and the second friction member 44 .

第2押圧部材46は、第1押圧部材45と協働して、第1摩擦材43と第2摩擦材44とを互いに押し付けるように押圧する。第2押圧部材46は、第1押圧部材45に対してさらに軸方向第1側L1に配置されている。本実施形態では、第2押圧部材46は、間にスラスト軸受95を介して、第1押圧部材45に隣接して配置されている。第2押圧部材46は、ケース6に対して軸方向Lに移動自在に支持されている。第1ケース部6Aの第1支持壁部6Abには、軸方向第2側L2に突出する筒状の第3筒状支持部63が形成されている。第3筒状支持部63は、第2筒状支持部62と同心に、当該第2筒状支持部62よりも大径に形成されている。第2押圧部材46は、径方向Rにおける第2筒状支持部62と第3筒状支持部63との間の環状空間に配置されている。 The second pressing member 46 cooperates with the first pressing member 45 to press the first friction member 43 and the second friction member 44 against each other. The second pressing member 46 is arranged further on the first side L1 in the axial direction with respect to the first pressing member 45 . In this embodiment, the second pressing member 46 is arranged adjacent to the first pressing member 45 with the thrust bearing 95 interposed therebetween. The second pressing member 46 is movably supported in the axial direction L with respect to the case 6 . A third cylindrical support portion 63 projecting to the second side L2 in the axial direction is formed in the first support wall portion 6Ab of the first case portion 6A. The third tubular support portion 63 is formed concentrically with the second tubular support portion 62 and has a larger diameter than the second tubular support portion 62 . The second pressing member 46 is arranged in an annular space between the second tubular support portion 62 and the third tubular support portion 63 in the radial direction R. As shown in FIG.

第2押圧部材46は、第3筒状支持部63の内周面及び第2筒状支持部62の外周面に沿って摺動する。本実施形態では、第2押圧部材46における第3筒状支持部63の内周面に対向する面と第3筒状支持部63の内周面との間に、シール部材52が配置されている。また、第2押圧部材46における第2筒状支持部62の外周面に対向する面と第2筒状支持部62の外周面との間に、シール部材53が配置されている。第2押圧部材46は、非回転状態で軸方向Lに移動自在に支持されている。 The second pressing member 46 slides along the inner peripheral surface of the third tubular support portion 63 and the outer peripheral surface of the second tubular support portion 62 . In this embodiment, a seal member 52 is arranged between the surface of the second pressing member 46 facing the inner peripheral surface of the third tubular support portion 63 and the inner peripheral surface of the third tubular support portion 63. there is A seal member 53 is arranged between the surface of the second pressing member 46 facing the outer peripheral surface of the second tubular support portion 62 and the outer peripheral surface of the second tubular support portion 62 . The second pressing member 46 is supported so as to be movable in the axial direction L in a non-rotating state.

押圧駆動部49は、第2押圧部材46を軸方向Lに駆動する。本実施形態の押圧駆動部49は、油圧室49Aと作動油供給部49Bとを備えている。油圧室49Aは、第2押圧部材46に油圧を作用させるための空間である。本実施形態では、第2筒状支持部62と第3筒状支持部63と第1支持壁部6Abと第2押圧部材46とで囲まれた空間に、油圧室49Aが形成されている。作動油供給部49Bは、油圧室49Aに連通するように設けられており、当該油圧室49Aに油(作動油)を供給する。本実施形態では、作動油供給部49Bにより、「油圧室に油を供給する油供給部」が構成されている。油圧室49A及び作動油供給部49Bは、ケース6(本例では第1ケース部6A)に形成されている。 The pressing driving portion 49 drives the second pressing member 46 in the axial direction L. As shown in FIG. The pressing drive portion 49 of this embodiment includes a hydraulic chamber 49A and a hydraulic fluid supply portion 49B. The hydraulic chamber 49A is a space for applying hydraulic pressure to the second pressing member 46 . In this embodiment, a hydraulic chamber 49A is formed in a space surrounded by the second tubular support portion 62, the third tubular support portion 63, the first support wall portion 6Ab, and the second pressing member 46. As shown in FIG. The hydraulic fluid supply part 49B is provided so as to communicate with the hydraulic chamber 49A, and supplies oil (hydraulic fluid) to the hydraulic chamber 49A. In this embodiment, the hydraulic oil supply portion 49B constitutes an "oil supply portion that supplies oil to the hydraulic chamber". The hydraulic chamber 49A and the hydraulic fluid supply portion 49B are formed in the case 6 (in this example, the first case portion 6A).

作動油供給部49Bから所定油圧の油が油圧室49Aに供給されると、その油圧によって、第2押圧部材46が軸方向第2側L2に移動する。すると、第2押圧部材46は、スラスト軸受95を介して第1押圧部材45と相対回転自在な状態で、当該第1押圧部材45を軸方向第1側L1から押圧する。これにより、第2押圧部材46及び第1押圧部材45は、連動して第1摩擦材43及び第2摩擦材44を軸方向第2側L2に押圧し、第1摩擦材43と第2摩擦材44とを互いに圧接する。 When oil having a predetermined hydraulic pressure is supplied from the hydraulic oil supply portion 49B to the hydraulic chamber 49A, the hydraulic pressure moves the second pressing member 46 to the second side L2 in the axial direction. Then, the second pressing member 46 presses the first pressing member 45 from the first side L1 in the axial direction while being relatively rotatable with the first pressing member 45 via the thrust bearing 95 . As a result, the second pressing member 46 and the first pressing member 45 are interlocked to press the first friction member 43 and the second friction member 44 toward the second side L2 in the axial direction. The material 44 is pressed against each other.

このように、摩擦係合装置40は、第1摩擦材43を支持する第1摩擦材支持部41Aを備え、回転可能に支持された第1支持部材41と、第2摩擦材44を支持する第2摩擦材支持部42Aを備え、第1支持部材41とは独立して回転可能に支持された第2支持部材42と、第1支持部材41と一体的に回転するとともに当該第1支持部材41に対して軸方向Lに移動自在に支持され、第1摩擦材43と第2摩擦材44とを互いに押し付けるように第1摩擦材43及び第2摩擦材44を軸方向Lに押圧する第1押圧部材45と、ケース6に対して軸方向Lに移動自在に支持され、第1押圧部材45と相対回転自在な状態で当該第1押圧部材45を軸方向Lに押圧する第2押圧部材46と、第2押圧部材46を軸方向Lに駆動する押圧駆動部49とを備える。 As described above, the friction engagement device 40 includes the first friction material support portion 41A that supports the first friction material 43, and supports the rotatably supported first support member 41 and the second friction material 44. A second support member 42 that includes a second friction material support portion 42A and is rotatably supported independently of the first support member 41; 41, and presses the first friction material 43 and the second friction material 44 in the axial direction L so as to press the first friction material 43 and the second friction material 44 against each other. 1 pressing member 45, and a second pressing member which is supported so as to be movable in the axial direction L with respect to the case 6 and presses the first pressing member 45 in the axial direction L while being rotatable relative to the first pressing member 45. 46 and a pressing drive portion 49 that drives the second pressing member 46 in the axial direction L. As shown in FIG.

この構成によれば、摩擦係合装置40が、単一の押圧部材を備えるのではなく、互いに相対回転する第1押圧部材45と第2押圧部材46とを備え、押圧駆動部49によって軸方向Lに駆動される方の第2押圧部材46が非回転部材であるケース6に対して軸方向Lに移動自在に支持される。これにより、第2押圧部材46を駆動するための作動油は回転せず遠心油圧も加わらないため、摩擦係合装置40の制御性を向上させることができる。 According to this configuration, the frictional engagement device 40 does not have a single pressing member, but includes the first pressing member 45 and the second pressing member 46 that rotate relative to each other, and is axially moved by the pressing driving portion 49 . The second pressing member 46 driven in L is movably supported in the axial direction L with respect to the case 6 which is a non-rotating member. As a result, since the hydraulic oil for driving the second pressing member 46 does not rotate and the centrifugal hydraulic pressure is not applied, the controllability of the friction engagement device 40 can be improved.

摩擦係合装置40が互いに相対回転する第1押圧部材45と第2押圧部材46とを備えることとの関係で、第1支持部材41の第1径方向延在部41Bは、第2押圧部材46よりも軸方向第2側L2で第2軸部材20と一体的に回転するように連結されている。また、第2支持部材42の第2径方向延在部42Bは、第1径方向延在部41Bよりもさらに軸方向第2側L2で第4ギヤ24と一体的に回転するように連結されている。 Since the frictional engagement device 40 includes the first pressing member 45 and the second pressing member 46 that rotate relative to each other, the first radially extending portion 41B of the first support member 41 is provided with the second pressing member. It is connected to rotate integrally with the second shaft member 20 on the second side L2 in the axial direction from 46 . In addition, the second radially extending portion 42B of the second support member 42 is coupled to rotate integrally with the fourth gear 24 on the axial second side L2 further than the first radially extending portion 41B. ing.

このように、第1支持部材41は、第1摩擦材支持部41Aから径方向Rの内側へ向けて延在する第1径方向延在部41Bをさらに備え、第1摩擦材支持部41Aは、軸方向Lに沿う筒状に形成され、第1径方向延在部41Bは、第1押圧部材45に対して軸方向第2側L2に配置され、第2支持部材42は、第2摩擦材支持部42Aから径方向Rの内側へ向けて延在する第2径方向延在部42Bをさらに備え、第2摩擦材支持部42Aは、軸方向Lに沿う筒状に形成され、第2径方向延在部42Bは、第1径方向延在部41Bに対して軸方向第2側L2に配置されている。 Thus, the first support member 41 further includes a first radially extending portion 41B extending inward in the radial direction R from the first friction material support portion 41A. , the first radially extending portion 41B is arranged on the second side L2 in the axial direction with respect to the first pressing member 45, and the second supporting member 42 is formed in the second frictional A second radially extending portion 42B extending inward in the radial direction R from the material supporting portion 42A is further provided. The radially extending portion 42B is arranged on the second axial side L2 with respect to the first radially extending portion 41B.

この構成によれば、第1支持部材41と第2軸部材20との連結及び第2支持部材42と第4ギヤ24との連結の双方を、第1押圧部材45に対して軸方向第2側L2において行うことができる。よって、第1支持部材41及び第2支持部材42の双方を、第1押圧部材45及び第2押圧部材46の軸方向Lの押圧力の伝達経路と交差しないように配置することができ、装置構成の簡素化を図ることができる。 According to this configuration, both the connection between the first support member 41 and the second shaft member 20 and the connection between the second support member 42 and the fourth gear 24 are arranged at the second axial position relative to the first pressing member 45 . It can be done on side L2. Therefore, both the first support member 41 and the second support member 42 can be arranged so as not to intersect with the transmission path of the pressing force in the axial direction L of the first pressing member 45 and the second pressing member 46, and the device The configuration can be simplified.

第2押圧部材46は、第2軸部材20の軸方向第1側L1の端部を支持する第2軸受93と同心に、当該第2軸受93の径方向Rの外側に配置されている。また、第2押圧部材46は、第1軸部材10の軸方向第1側L1の端部を支持する第1軸受92と、外周部どうしを互いに対向させた状態で配置されている。こうして、第2押圧部材46は、第2軸受93に対して径方向Rの外側であって、周方向における一部が第1軸受92と第2軸受93との間に配置されている。そして、本実施形態では、第2押圧部材46の軸方向Lにおける配置領域D3が、第1軸受92の軸方向Lにおける配置領域D1及び第2軸受93の軸方向Lにおける配置領域D2の双方に重複している。なお、「重複」は、全体が重複する場合だけでなく、一部どうしが重複する場合も含む概念である。 The second pressing member 46 is arranged outside in the radial direction R of the second bearing 93 concentrically with the second bearing 93 that supports the end portion of the second shaft member 20 on the first side L1 in the axial direction. In addition, the second pressing member 46 is arranged in a state in which the outer peripheral portions thereof face each other with the first bearing 92 that supports the end portion of the first shaft member 10 on the first side L1 in the axial direction. Thus, the second pressing member 46 is arranged radially outward of the second bearing 93 and partially between the first bearing 92 and the second bearing 93 in the circumferential direction. In this embodiment, the arrangement area D3 in the axial direction L of the second pressing member 46 is located in both the arrangement area D1 in the axial direction L of the first bearing 92 and the arrangement area D2 in the axial direction L of the second bearing 93. Duplicate. Note that "overlapping" is a concept that includes not only cases in which the entirety overlaps, but also cases in which parts overlap.

ここで、第1軸受92の軸方向Lにおける配置領域D1は、軸方向Lにおける当該第1軸受92の外輪及び内輪の最大占有範囲を表す。外輪と内輪とで配置範囲が一致する場合は、当該領域が配置領域D1となる。また、外輪と内輪とで配置範囲が異なる場合において、一方の配置領域が他方の配置領域を包含する場合には、他方を包含する方の配置領域が配置領域D1となる。また、外輪と内輪とで配置範囲が異なる場合において、一方の配置領域と他方の配置領域とが包含関係とはならない場合には、軸方向第1側L1に位置する方の軸方向第1側L1の端部から軸方向第2側L2に位置する方の軸方向第2側L2の端部までの領域が配置領域D1となる。第2軸受93の軸方向Lにおける配置領域D2に関しても同様である。 Here, the arrangement area D1 in the axial direction L of the first bearing 92 represents the maximum occupied range of the outer ring and the inner ring of the first bearing 92 in the axial direction L. As shown in FIG. When the arrangement ranges of the outer ring and the inner ring match, the area becomes the arrangement area D1. Further, in the case where the outer ring and the inner ring have different arrangement ranges, if one arrangement area includes the other arrangement area, the arrangement area that includes the other becomes the arrangement area D1. Further, in the case where the outer ring and the inner ring have different arrangement ranges, if the one arrangement area and the other arrangement area do not have an inclusion relationship, the one located on the axial direction first side L1 is the first axial side. A region from the end of L1 to the end of the second axial side L2 located on the second axial side L2 is the arrangement region D1. The same applies to the arrangement area D2 in the axial direction L of the second bearing 93 .

このように、第2押圧部材46は、第2軸受93に対して径方向Rの外側であって、周方向における一部が第1軸受92と第2軸受93との間に配置され、第2押圧部材46の軸方向Lにおける配置領域D3が、第1軸受92の軸方向Lにおける配置領域D1及び第2軸受93の軸方向Lにおける配置領域D2の双方に重複している。 In this manner, the second pressing member 46 is arranged outside the second bearing 93 in the radial direction R and partially between the first bearing 92 and the second bearing 93 in the circumferential direction. The arrangement area D3 in the axial direction L of the second pressing member 46 overlaps both the arrangement area D1 in the axial direction L of the first bearing 92 and the arrangement area D2 in the axial direction L of the second bearing 93 .

この構成によれば、第2押圧部材46の軸方向Lの配置領域D3を第1軸受92の軸方向Lの配置領域D1及び第2軸受93の軸方向Lの配置領域D2の双方と重複させることで、変速機1の軸方向寸法を小さく抑えやすい。制御性向上のために摩擦係合装置40が第1押圧部材45と第2押圧部材46とを備えるように構成しながら、第1軸受92と第2軸受93との間のスペースを利用して第2押圧部材46を配置して、装置全体の大型化を抑制することができる。 According to this configuration, the arrangement area D3 of the second pressing member 46 in the axial direction L overlaps both the arrangement area D1 of the first bearing 92 in the axial direction L and the arrangement area D2 of the second bearing 93 in the axial direction L. This makes it easy to keep the axial dimension of the transmission 1 small. While the friction engagement device 40 is configured to include the first pressing member 45 and the second pressing member 46 in order to improve controllability, the space between the first bearing 92 and the second bearing 93 is used to By arranging the second pressing member 46, it is possible to suppress an increase in the size of the entire device.

なお、第1軸受92及び第2軸受93はケース6に固定されているのに対して、第2押圧部材46は軸方向Lに移動可能である。このため、第2押圧部材46の軸方向Lにおける配置領域D3は、軸方向Lにおける第2押圧部材46の最大可動範囲を表すものとする。本実施形態では、第2押圧部材46の軸方向Lにおける配置領域D3は、その全体が第1軸受92の軸方向Lにおける配置領域D1と重複している。また、第2押圧部材46の軸方向Lにおける配置領域D3は、軸方向第1側L1の一部を除く部分が第2軸受93の軸方向Lにおける配置領域D2と重複している。 The first bearing 92 and the second bearing 93 are fixed to the case 6, while the second pressing member 46 is movable in the axial direction L. As shown in FIG. Therefore, the arrangement area D3 in the axial direction L of the second pressing member 46 represents the maximum movable range of the second pressing member 46 in the axial direction L. As shown in FIG. In this embodiment, the arrangement area D3 in the axial direction L of the second pressing member 46 entirely overlaps the arrangement area D1 in the axial direction L of the first bearing 92 . In addition, the arrangement area D3 in the axial direction L of the second pressing member 46 overlaps the arrangement area D2 in the axial direction L of the second bearing 93 except for a part of the first side L1 in the axial direction.

第1軸受92は、その周方向の一部が第2摩擦材支持部42Aよりも径方向Rの内側に位置するように配置されている。そして、図5に示すように、軸方向視で、第1軸受92と第1摩擦材43及び第2摩擦材44とが重複するように配置されている。本実施形態ででは、第1軸受92と第1摩擦材43及び第2摩擦材44とは、それぞれの外周部どうしが部分的に重複するように配置されている。 The first bearing 92 is arranged such that a portion of the circumferential direction thereof is located inside in the radial direction R of the second friction material support portion 42A. As shown in FIG. 5, the first bearing 92, the first friction member 43, and the second friction member 44 are arranged so as to overlap each other when viewed in the axial direction. In this embodiment, the first bearing 92, the first friction material 43, and the second friction material 44 are arranged so that their outer peripheral portions partially overlap each other.

車両用駆動装置100は、第1摩擦材43及び第2摩擦材44を潤滑及び冷却するための構造(以下、単に「潤滑構造」と言う。)を備えている。この潤滑構造は、摩擦係合装置40を支持している第2軸部材20の内部に形成された油路を利用して構成されている。本実施形態では、第2軸部材20の内部に、軸方向油路20aと径方向油路20bとが形成されている。軸方向油路20aは、第2軸部材20の中心部に軸方向Lに沿って直線状に形成されている。径方向油路20bは、軸方向油路20aから径方向Rに沿って延びて第2軸部材20の外周面に開口するように形成されている。径方向油路20bは、軸方向Lの複数箇所に設けられている。本例では、それら複数の径方向油路20bのうち、摩擦係合装置40の軸方向Lにおける配置領域と重複する位置に設けられている径方向油路20bを通った油が、摩擦係合装置40に供給される。 The vehicle drive system 100 includes a structure for lubricating and cooling the first friction material 43 and the second friction material 44 (hereinafter simply referred to as "lubrication structure"). This lubricating structure is configured using an oil passage formed inside the second shaft member 20 that supports the friction engagement device 40 . In this embodiment, an axial oil passage 20 a and a radial oil passage 20 b are formed inside the second shaft member 20 . The axial oil passage 20 a is formed linearly along the axial direction L at the center of the second shaft member 20 . The radial oil passage 20 b is formed to extend along the radial direction R from the axial oil passage 20 a and open to the outer peripheral surface of the second shaft member 20 . The radial oil passages 20b are provided at a plurality of locations in the axial direction L. As shown in FIG. In this example, among the plurality of radial oil passages 20b, the oil that has passed through the radial oil passages 20b that are provided at positions that overlap with the arrangement region in the axial direction L of the friction engagement device 40 is engaged with the friction engagement device. It is supplied to device 40 .

軸方向油路20aの軸方向第1側L1の開口部に連通するように、ケース6(本例では第1ケース部6A)に潤滑油供給部55が形成されている。潤滑油供給部55から供給される油(以下、「潤滑油」と言う。)は、第2軸部材20内の軸方向油路20aを通って摩擦係合装置40の径方向Rの内側に供給される。そして、潤滑油は、さらに特定の径方向油路20bを通って摩擦係合装置40に供給される。 A lubricating oil supply portion 55 is formed in the case 6 (in this example, the first case portion 6A) so as to communicate with the opening portion of the axial direction first side L1 of the axial direction oil passage 20a. Oil supplied from the lubricating oil supply portion 55 (hereinafter referred to as “lubricating oil”) passes through the axial oil passage 20 a in the second shaft member 20 and flows inside the friction engagement device 40 in the radial direction R. supplied. The lubricating oil is then supplied to the friction engagement device 40 through a specific radial oil passage 20b.

本実施形態では、第1支持部材41の軸連結部41Cに、その内周面と外周面とを連通する連通油路41dが形成されている。この連通油路41dは、径方向油路20bと連通するように設けられている。このため、径方向油路20bから供給された潤滑油は、さらに連通油路41dを通って、径方向Rの外側にある第1摩擦材支持部41A側の空間(油溜め部56)に供給される。ここで、油溜め部56は、第1摩擦材支持部41Aの内周面と第1径方向延在部41Bと摺動部45Aとに囲まれた領域に形成される、潤滑油が溜まる部位である。第1支持部材41は第2軸部材20と共に回転するため、遠心油圧によって、油溜め部56において、潤滑油は第1摩擦材支持部41Aの内周面側に溜まる。本実施形態では、潤滑油供給部55、軸方向油路20a、径方向油路20b、及び連通油路41dにより、「油溜め部に油を供給する油供給部」が構成されている。 In this embodiment, the shaft connection portion 41C of the first support member 41 is formed with a communication oil passage 41d that communicates between the inner peripheral surface and the outer peripheral surface thereof. 41 d of this communication oil path is provided so that it may connect with the radial direction oil path 20b. Therefore, the lubricating oil supplied from the radial direction oil passage 20b further passes through the communication oil passage 41d and is supplied to the space (oil reservoir portion 56) on the side of the first friction material support portion 41A outside in the radial direction R. be done. Here, the oil reservoir portion 56 is a portion formed in a region surrounded by the inner peripheral surface of the first friction material support portion 41A, the first radially extending portion 41B, and the sliding portion 45A and in which lubricating oil is accumulated. is. Since the first support member 41 rotates together with the second shaft member 20, the lubricating oil accumulates on the inner peripheral surface side of the first friction material support portion 41A in the oil reservoir portion 56 due to the centrifugal hydraulic pressure. In this embodiment, the lubricating oil supply portion 55, the axial oil passage 20a, the radial oil passage 20b, and the communication oil passage 41d constitute an "oil supply portion that supplies oil to the oil reservoir".

第1支持部材41の第1摩擦材支持部41Aに、第1油路81が設けられている。第1油路81は、第1摩擦材支持部41Aの内周面と外周面とを連通するように設けられており、油溜め部56と第1摩擦部材及び第2摩擦部材が配置された領域(摩擦材配置領域P)とを連通する。本実施形態では、第1油路81は、第1摩擦材支持部41Aを径方向Rに貫通するように形成されている。また、第1油路81は、軸方向L及び周方向に分散して複数設けられている。油溜め部56に溜まった潤滑油は、遠心油圧により、第1油路81を通って摩擦材配置領域Pに供給され、第1摩擦材43及び第2摩擦材44を潤滑及び冷却する。 A first oil passage 81 is provided in the first friction material support portion 41A of the first support member 41 . The first oil passage 81 is provided so as to communicate the inner peripheral surface and the outer peripheral surface of the first friction material support portion 41A. area (friction material placement area P). In this embodiment, the first oil passage 81 is formed so as to penetrate the first friction material support portion 41A in the radial direction R. As shown in FIG. A plurality of first oil passages 81 are provided dispersedly in the axial direction L and the circumferential direction. The lubricating oil accumulated in the oil reservoir 56 is supplied to the friction material arrangement region P through the first oil passage 81 by centrifugal hydraulic pressure to lubricate and cool the first friction material 43 and the second friction material 44 .

第1油路81を通って摩擦材配置領域Pに供給される油量に比べて軸方向油路20a側から油溜め部56に流入する油量が多ければ多いほど、油溜め部56にはより多くの潤滑油が溜まるようになる。特に本実施形態では、第1押圧部材45の摺動部45Aと第1摩擦材支持部41Aとの間にシール部材51が配置されており、これらの間の油密性が高くなっているので、油溜め部56には潤滑油が溜まりやすい。油溜め部56に溜まる潤滑油の量が多くなり過ぎると、溜まった潤滑油に遠心油圧が生じて、付勢部材48とは別に第1押圧部材45を押し戻すように作用する場合がある。このような遠心油圧はばらつきが大きいため、摩擦係合装置40の制御性が悪くなる可能性がある。 The larger the amount of oil flowing into the oil reservoir 56 from the axial oil passage 20a side compared to the amount of oil supplied to the friction material arrangement region P through the first oil passage 81, the more More lubricant will accumulate. Especially in this embodiment, the sealing member 51 is arranged between the sliding portion 45A of the first pressing member 45 and the first friction material supporting portion 41A, and the oil tightness between them is high. , lubricating oil tends to accumulate in the oil reservoir 56 . If the amount of lubricating oil accumulated in the oil reservoir 56 becomes too large, centrifugal hydraulic pressure is generated in the accumulated lubricating oil, which may act to push back the first pressing member 45 independently of the biasing member 48 . Since such centrifugal hydraulic pressure varies widely, the controllability of the frictional engagement device 40 may deteriorate.

そこで本実施形態では、第1支持部材41に、第1油路81とは別に、第2油路82がさらに設けられている。第2油路82は、油溜め部56と摩擦材配置領域P以外の空間とを連通するように設けられている。より具体的には、第2油路82は、第1支持部材41の第1径方向延在部41Bを軸方向Lに貫通するように形成されている。これにより、第2油路82は、油溜め部56と、第1支持部材41の第1径方向延在部41Bと第2支持部材42の第2径方向延在部42Bとの軸方向Lの間の空間とを連通している。第2油路82を通って油溜め部56から流出した潤滑油は、その後、第2摩擦材支持部42Aに形成された貫通穴42cから、第2支持部材42の外側に排出される。 Therefore, in the present embodiment, a second oil passage 82 is further provided in the first support member 41 in addition to the first oil passage 81 . The second oil passage 82 is provided so as to communicate between the oil reservoir portion 56 and a space other than the friction material arrangement region P. As shown in FIG. More specifically, the second oil passage 82 is formed so as to penetrate in the axial direction L through the first radially extending portion 41B of the first support member 41 . As a result, the second oil passage 82 extends in the axial direction L between the oil reservoir portion 56 and the first radially extending portion 41B of the first supporting member 41 and the second radially extending portion 42B of the second supporting member 42 . communicates with the space between The lubricating oil that has flowed out of the oil reservoir 56 through the second oil passage 82 is then discharged to the outside of the second support member 42 through the through holes 42c formed in the second friction material support portion 42A.

第2油路82における油溜め部56側に開口する開口部(第2開口部82a)は、第1油路81における油溜め部56側に開口する開口部(第1開口部81a)に対して径方向Rの内側に離間して配置されている。これにより、油溜め部56には第2開口部82aの位置に応じた一定量の潤滑油が溜まるようにして第1摩擦材43及び第2摩擦材44の潤滑及び冷却を適切に行えるようにしつつ、油溜め部56に溜まる油の量が多くなり過ぎないように規制することができる。よって、油溜め部56に溜まる油による遠心油圧によって第1押圧部材45が受ける影響を少なく抑えることができる。 The opening (second opening 82a) of the second oil passage 82 that opens toward the oil sump 56 is different from the opening (first opening 81a) of the first oil passage 81 that opens toward the oil sump 56. are spaced apart on the inner side in the radial direction R. As a result, a certain amount of lubricating oil corresponding to the position of the second opening 82a is accumulated in the oil reservoir 56 so that the first friction material 43 and the second friction material 44 can be properly lubricated and cooled. At the same time, it is possible to regulate the amount of oil accumulated in the oil reservoir 56 so that it does not become too large. Therefore, the influence of the centrifugal hydraulic pressure due to the oil accumulated in the oil reservoir 56 on the first pressing member 45 can be reduced.

このように、第1摩擦材支持部41Aに、油溜め部56と第1摩擦部材及び第2摩擦部材が配置された摩擦材配置領域Pとを連通する第1油路81が設けられ、第1支持部材41及び第1押圧部材45の少なくとも一方に、油溜め部56と摩擦材配置領域P以外の空間とを連通する第2油路82が設けられ、第1油路81における油溜め部56側に開口する開口部を第1開口部81aとし、第2油路82における油溜め部56側に開口する開口部を第2開口部82aとして、第2開口部82aが第1開口部81aに対して径方向Rの内側に離間して配置されている。 Thus, the first friction material support portion 41A is provided with the first oil passage 81 that communicates the oil reservoir portion 56 with the friction material arrangement region P in which the first friction member and the second friction member are arranged. At least one of the first support member 41 and the first pressing member 45 is provided with a second oil passage 82 that communicates the oil reservoir portion 56 with a space other than the friction material arrangement region P. An opening opening on the 56 side is defined as a first opening 81a, an opening opening on the oil reservoir 56 side in the second oil passage 82 is defined as a second opening 82a, and the second opening 82a is the first opening 81a. are spaced apart on the inner side in the radial direction R.

この構成によれば、潤滑油供給部55から供給されて油溜め部56に溜まった油を、第1油路81を介して摩擦材配置領域Pに供給することができる。よって、第1摩擦材43及び第2摩擦材44の潤滑を適切に行うことができる。また、油溜め部56に溜まった油のうち、第2開口部82aよりも径方向Rの内側にある油を、第2油路82を介して、油溜め部56の外に排出することができる。これにより、油溜め部56に溜まる油の量が多くなり過ぎないように規制することができる。よって、油溜め部56に溜まる油による遠心油圧によって第1押圧部材45が受ける影響を少なく抑えることができ、その結果、摩擦係合装置40の制御性を向上させることができる。 According to this configuration, the oil supplied from the lubricating oil supply portion 55 and accumulated in the oil reservoir portion 56 can be supplied to the friction material arrangement region P via the first oil passage 81 . Therefore, it is possible to properly lubricate the first friction material 43 and the second friction material 44 . Further, of the oil accumulated in the oil reservoir 56, the oil located inside the second opening 82a in the radial direction R can be discharged to the outside of the oil reservoir 56 through the second oil passage 82. can. As a result, the amount of oil accumulated in the oil reservoir portion 56 can be regulated so that it does not become too large. Therefore, the influence of the centrifugal hydraulic pressure generated by the oil accumulated in the oil reservoir 56 on the first pressing member 45 can be reduced, and as a result, the controllability of the friction engagement device 40 can be improved.

本実施形態では、第2開口部82aは、シール部材51よりも径方向Rの内側に配置されている。これにより、油溜め部56に溜まる潤滑油の量を一定量以上確保することができる。また、第2開口部82aは、第1径方向延在部41Bの径方向Rの中央よりも径方向Rの外側に配置されている。さらに第2開口部82aは、付勢部材48よりも径方向Rの外側に配置されている。これにより、油溜め部56に溜まる潤滑油の量を適量に抑え、遠心油圧によって第1押圧部材45が受ける影響を極めて小さくすることができる。 In the present embodiment, the second opening 82a is arranged inside the sealing member 51 in the radial direction R. As shown in FIG. As a result, the amount of lubricating oil accumulated in the oil reservoir portion 56 can be ensured to be equal to or greater than a certain amount. In addition, the second opening 82a is arranged outside in the radial direction R of the center in the radial direction R of the first radially extending portion 41B. Further, the second opening 82a is arranged outside the biasing member 48 in the radial direction R. As shown in FIG. As a result, the amount of lubricating oil accumulated in the oil reservoir portion 56 can be suppressed to an appropriate amount, and the influence of the centrifugal hydraulic pressure on the first pressing member 45 can be extremely reduced.

以上、本実施形態の車両用駆動装置100について説明してきたが、これまで述べた主な特徴及び効果以外に、以下の特徴及び効果を有する。 Although the vehicle drive system 100 of the present embodiment has been described above, it has the following features and effects in addition to the main features and effects described above.

押圧駆動部49は、第2押圧部材46に油圧を作用させるための油圧室49Aと、当該油圧室49Aに油を供給する作動油供給部49Bと、を備え、油圧室49A及び作動油供給部49Bが、ケース6に形成されている。 The pressing drive unit 49 includes a hydraulic chamber 49A for applying hydraulic pressure to the second pressing member 46, and a hydraulic oil supply unit 49B for supplying oil to the hydraulic chamber 49A. 49B is formed on case 6 .

この構成によれば、押圧駆動部49を構成する油圧室49A及び作動油供給部49Bがケース6に形成されるので、押圧駆動部49を回転体に配置する場合とは異なり、当該押圧駆動部49に遠心油圧が作用することがない。このため、遠心油圧を打ち消すための構造を設ける必要がなく、装置構成の簡素化を図ることができる。 According to this configuration, since the hydraulic chamber 49A and the hydraulic oil supply portion 49B that constitute the pressing drive portion 49 are formed in the case 6, unlike the case where the pressing drive portion 49 is disposed on the rotating body, the pressing drive portion 49 is not acted upon by centrifugal hydraulic pressure. Therefore, there is no need to provide a structure for canceling the centrifugal hydraulic pressure, and the device configuration can be simplified.

第1支持部材41は、第1摩擦材支持部41Aから径方向Rの内側へ向けて延在する第1径方向延在部41Bをさらに備え、第1摩擦材支持部41Aは、軸方向Lに沿う筒状に形成され、第1径方向延在部41Bは、第1押圧部材45に対して軸方向第2側L2に配置され、第2支持部材42は、第2摩擦材支持部42Aから径方向Rの内側へ向けて延在する第2径方向延在部42Bをさらに備え、第2摩擦材支持部42Aは、軸方向Lに沿う筒状に形成され、第2径方向延在部42Bは、第1径方向延在部41Bに対して軸方向第2側L2に配置されている。 The first support member 41 further includes a first radially extending portion 41B extending inward in the radial direction R from the first friction material supporting portion 41A. The first radially extending portion 41B is arranged on the second side L2 in the axial direction with respect to the first pressing member 45, and the second supporting member 42 includes the second friction material supporting portion 42A. A second radially extending portion 42B extending inward in the radial direction R from the second radially extending portion 42B is further provided. The portion 42B is arranged on the second axial side L2 with respect to the first radially extending portion 41B.

この構成によれば、第1支持部材41と第2軸部材20との連結及び第2支持部材42と第4ギヤ24との連結の双方を、第1押圧部材45に対して軸方向第2側L2において行うことができる。よって、第1支持部材41及び第2支持部材42の双方を、第1押圧部材45及び第2押圧部材46の軸方向Lの押圧力の伝達経路と交差しないように配置することができ、装置構成の簡素化を図ることができる。 According to this configuration, both the connection between the first support member 41 and the second shaft member 20 and the connection between the second support member 42 and the fourth gear 24 are arranged at the second axial position relative to the first pressing member 45 . It can be done on side L2. Therefore, both the first support member 41 and the second support member 42 can be arranged so as not to intersect with the transmission path of the pressing force in the axial direction L of the first pressing member 45 and the second pressing member 46, and the device The configuration can be simplified.

車両用駆動装置100は、変速機1と、第1軸部材10と同軸上に配置されて第1軸部材10と駆動連結されたロータ2Bを備えた回転電機2と、それぞれが車輪Wに駆動連結される一対の出力部材4と、差動歯車機構3と、を備え、回転電機2の側から伝達される回転が、変速機1を介して差動歯車機構3に伝達され、さらに差動歯車機構3により一対の出力部材4に分配され、変速機1は、第2軸部材20と一体的に回転するように当該第2軸部材20に連結された出力ギヤ25をさらに備え、第1軸部材10及びロータ2Bが配置された軸を第1軸X1、第2軸部材20が配置された軸を第2軸X2として、差動歯車機構3は、第1軸X1及び第2軸X2に平行な第3軸X3上に配置されて、出力ギヤ25に噛み合う差動入力ギヤ3Aを備える。 The vehicle drive device 100 includes a transmission 1, a rotating electrical machine 2 having a rotor 2B arranged coaxially with a first shaft member 10 and drivingly connected to the first shaft member 10, and driving wheels W, respectively. A pair of connected output members 4 and a differential gear mechanism 3 are provided. Rotation transmitted from the rotating electric machine 2 is transmitted to the differential gear mechanism 3 via the transmission 1, The transmission 1 further includes an output gear 25 which is distributed to the pair of output members 4 by the gear mechanism 3 and which is connected to the second shaft member 20 so as to rotate integrally therewith. With the axis on which the shaft member 10 and the rotor 2B are arranged as the first axis X1, and the axis on which the second shaft member 20 is arranged as the second axis X2, the differential gear mechanism 3 has the first axis X1 and the second axis X2. and a differential input gear 3A that meshes with the output gear 25.

この構成によれば、回転電機2の駆動力を、変速機1及び差動歯車機構3を介して一対の車輪Wに伝達させて、車両を駆動することができる。噛み合い式係合装置30と摩擦係合装置40とを併用した変速機1の採用により、エネルギー効率の向上と変速動作の円滑性の向上との双方を図ることができる。変速機1の装置構成の複雑化が抑えられているので、車両用駆動装置100全体としても、その大型化を抑制することができる。また、変速機1に備えられる摩擦係合装置40の制御性が向上されていることによっても、変速動作の円滑性のさらなる向上を図ることができる。 According to this configuration, the driving force of the rotary electric machine 2 can be transmitted to the pair of wheels W via the transmission 1 and the differential gear mechanism 3 to drive the vehicle. By adopting the transmission 1 that uses both the mesh engagement device 30 and the friction engagement device 40, it is possible to improve both the energy efficiency and the smoothness of the shifting operation. Since the complication of the device configuration of the transmission 1 is suppressed, it is possible to suppress an increase in size of the vehicle drive device 100 as a whole. In addition, since the controllability of the friction engagement device 40 provided in the transmission 1 is improved, it is possible to further improve the smoothness of the shifting operation.

第1摩擦材43は、第1摩擦材支持部41Aの外周面に支持されており、第1油路81は、第1摩擦材支持部41Aを径方向Rに貫通するように形成され、第2油路82は、第1支持部材41の第1径方向延在部41Bを軸方向Lに貫通するように形成されている。 The first friction material 43 is supported on the outer peripheral surface of the first friction material support portion 41A, and the first oil passage 81 is formed so as to penetrate the first friction material support portion 41A in the radial direction R. The second oil passage 82 is formed so as to penetrate in the axial direction L through the first radially extending portion 41B of the first support member 41 .

この構成によれば、第1摩擦材支持部41Aを径方向Rに貫通する第1油路81により、遠心油圧を利用して第1摩擦材43及び第2摩擦材44に油を供給し、これらの潤滑を適切に行うことができる。また、構造が複雑になりやすい第1押圧部材45ではなく、第1支持部材41に第2油路82を設けることで、第2油路82の配置自由度が高くなる。よって、油溜め部56に溜まる油を、第2油路82を介して適切に排出する構成を容易に実現できる。 According to this configuration, the centrifugal hydraulic pressure is used to supply oil to the first friction material 43 and the second friction material 44 through the first oil passage 81 that penetrates the first friction material support portion 41A in the radial direction R, These lubrications can be performed appropriately. Moreover, by providing the second oil passage 82 in the first support member 41 instead of the first pressing member 45, which tends to have a complicated structure, the degree of freedom in arranging the second oil passage 82 is increased. Therefore, it is possible to easily realize a configuration in which the oil accumulated in the oil reservoir portion 56 is appropriately discharged through the second oil passage 82 .

摺動部45Aに、第1押圧部材45を摩擦材配置領域Pから離間させるように軸方向Lに付勢する付勢部材48が取り付けられており、第2開口部82aは、付勢部材48よりも径方向Rの外側に配置されている。 A biasing member 48 that biases the first pressing member 45 in the axial direction L so as to separate the first pressing member 45 from the friction material arrangement region P is attached to the sliding portion 45A. is arranged outside in the radial direction R.

この構成によれば、第2開口部82aの位置を第1摩擦材支持部41A側に比較的寄せて配置することができ、油溜め部56に溜まる油を比較的少量に抑えることができる。よって、遠心油圧によって第1押圧部材45が受ける影響をさらに少なく抑えることができ、摩擦係合装置40の制御性をさらに向上させることができる。 According to this configuration, the position of the second opening 82a can be arranged relatively close to the first friction material support portion 41A side, and the amount of oil accumulated in the oil reservoir portion 56 can be suppressed to a relatively small amount. Therefore, the influence of the centrifugal hydraulic pressure on the first pressing member 45 can be further reduced, and the controllability of the friction engagement device 40 can be further improved.

摺動部45Aは、第1摩擦材支持部41Aよりも径方向Rの内側に配置され、径方向Rに沿って延在するように形成され、摺動部45Aにおける第1摩擦材支持部41Aの内周面に対向する面である摺動対向面と、第1摩擦材支持部41Aの内周面との間にシール部材51が配置されている。 The sliding portion 45A is arranged radially inward of the first friction material supporting portion 41A and is formed to extend along the radial direction R. A sealing member 51 is disposed between the sliding facing surface, which is a surface facing the inner peripheral surface of the first friction material support portion 41A, and the inner peripheral surface of the first friction material supporting portion 41A.

この構成によれば、シール部材51を設けることにより、第1摩擦材支持部41Aの内周面に沿う領域に形成された油溜め部56に適切に油を溜めることができ、それによって第1摩擦材43及び第2摩擦材44の潤滑を適切に行うことができる。一方、そのようなシール部材51の存在によって、油溜め部56からの油の排出がほとんど行われない構造となるが、第2油路82を設けることで油の一部を油溜め部56の外に排出することができるので、油溜め部56に溜まる油を一定量以下に規制できる。 According to this configuration, by providing the seal member 51, it is possible to appropriately store oil in the oil reservoir portion 56 formed in the region along the inner peripheral surface of the first friction material support portion 41A. The friction material 43 and the second friction material 44 can be properly lubricated. On the other hand, due to the presence of such a seal member 51 , the structure is such that almost no oil is discharged from the oil reservoir 56 . Since the oil can be discharged to the outside, the amount of oil accumulated in the oil reservoir 56 can be regulated to a certain amount or less.

車両用駆動装置100は、摩擦係合装置40と、第1軸X1上に配置されたロータ2Bを備え、車輪Wの駆動力源として機能する回転電機2と、それぞれが車輪Wに駆動連結される一対の出力部材4と、回転電機2の側から伝達される回転を変速する変速機1と、変速機1から伝達される回転を、一対の出力部材4に分配する差動歯車機構3と、回転電機2、変速機1、及び差動歯車機構3を収容する、ケース6としてのケース6と、を備え、変速機1は、第1軸X1上に配置された第1軸部材10と、第1軸部材10と一体的に回転するように連結された第1ギヤ12及び第2ギヤ14と、第1軸X1に平行な第2軸X2上に配置された第2軸部材20と、第2軸部材20に対して相対回転可能に支持された第3ギヤ22及び第4ギヤ24と、第2軸部材20と一体的に回転するように連結された出力ギヤ25と、を備え、第1ギヤ12と第3ギヤ22とが互いに噛み合うとともに、第2ギヤ14と第4ギヤ24とが互いに噛み合い、第3ギヤ22及び第4ギヤ24のいずれか一方を第2軸部材20に対して選択的に連結する噛み合い式係合装置30が、第2軸X2上であって、第3ギヤ22と第4ギヤ24との軸方向Lの間に配置され、差動歯車機構3は、第1軸X1及び第2軸X2に平行な第3軸X3上に配置されて、出力ギヤ25に噛み合う差動入力ギヤ3Aを備え、摩擦係合装置40が、第2軸X2上であって、第3ギヤ22及び第4ギヤ24に対して軸方向Lの一方側に配置されている。 The vehicle drive system 100 includes a friction engagement device 40, a rotor 2B arranged on a first axis X1, and a rotary electric machine 2 functioning as a driving force source for the wheels W, and drivingly connected to the wheels W, respectively. a pair of output members 4, a transmission 1 for shifting the rotation transmitted from the rotary electric machine 2 side, and a differential gear mechanism 3 for distributing the rotation transmitted from the transmission 1 to the pair of output members 4; , the rotating electric machine 2, the transmission 1, and the differential gear mechanism 3. The transmission 1 is provided with a first shaft member 10 arranged on the first axis X1 and , a first gear 12 and a second gear 14 connected to rotate integrally with the first shaft member 10, and a second shaft member 20 arranged on a second axis X2 parallel to the first axis X1. , a third gear 22 and a fourth gear 24 supported so as to be relatively rotatable with respect to the second shaft member 20, and an output gear 25 connected to rotate integrally with the second shaft member 20. , the first gear 12 and the third gear 22 mesh with each other, the second gear 14 and the fourth gear 24 mesh with each other, and one of the third gear 22 and the fourth gear 24 is engaged with the second shaft member 20. A meshing engagement device 30 selectively connected to the differential gear mechanism 3 is arranged on the second axis X2 and between the third gear 22 and the fourth gear 24 in the axial direction L, , a differential input gear 3A arranged on a third axis X3 parallel to the first axis X1 and the second axis X2 and meshing with the output gear 25, and a friction engagement device 40 on the second axis X2. , and arranged on one side in the axial direction L with respect to the third gear 22 and the fourth gear 24 .

この構成によれば、回転電機2の駆動力を、変速機1及び差動歯車機構3を介して一対の車輪Wに伝達させて、車両を駆動することができる。噛み合い式係合装置30と摩擦係合装置40とを併用した変速機1の採用により、エネルギー効率の向上と変速動作の円滑性の向上との双方を図ることができる。特に、変速機1に備えられる摩擦係合装置40の制御性が向上されていることにより、変速動作の円滑性のさらなる向上を図ることができる。 According to this configuration, the driving force of the rotary electric machine 2 can be transmitted to the pair of wheels W via the transmission 1 and the differential gear mechanism 3 to drive the vehicle. By adopting the transmission 1 that uses both the mesh engagement device 30 and the friction engagement device 40, it is possible to improve both the energy efficiency and the smoothness of the shifting operation. In particular, by improving the controllability of the friction engagement device 40 provided in the transmission 1, it is possible to further improve the smoothness of the shifting operation.

ケース6は、第2軸受93を径方向R外側から支持する第3筒状支持部63を備え、押圧駆動部49は、第2押圧部材46に油圧を作用させるための油圧室49Aと、当該油圧室49Aに油を供給する作動油供給部49Bと、を備え、作動油供給部49Bが、ケース6に形成され、油圧室49Aの内周面は、第3筒状支持部63の外周面を用いて形成されている。 The case 6 includes a third cylindrical support portion 63 that supports the second bearing 93 from the outside in the radial direction R. The pressing driving portion 49 includes a hydraulic chamber 49A for applying hydraulic pressure to the second pressing member 46, and a hydraulic oil supply portion 49B that supplies oil to the hydraulic chamber 49A. The hydraulic oil supply portion 49B is formed in the case 6. is formed using

この構成によれば、第2軸受93を支持するためのケース6の構造(第3筒状支持部63)を利用して油圧室49Aを形成することで、押圧駆動部49を小型化することが容易となる。 According to this configuration, the hydraulic pressure chamber 49A is formed using the structure of the case 6 (the third cylindrical support portion 63) for supporting the second bearing 93, thereby reducing the size of the pressing drive portion 49. becomes easier.

第1軸受92は、第1軸部材10の軸方向第1側L1の端部を支持し、第2軸受93は、第2軸部材20の軸方向第1側L1の端部を支持している。 The first bearing 92 supports the end of the first shaft member 10 on the first axial side L1, and the second bearing 93 supports the end of the second shaft member 20 on the first axial side L1. there is

この構成によれば、軸方向Lにおける配置領域が互いに重複する第1軸受92と第2軸受93とによって、第1軸部材10及び第2軸部材20の双方が軸方向第1側L1の端部を支持されるので、これら第1軸部材10及び第2軸部材20の軸方向第1側L1への突出量を小さく抑えることができる。よって、変速機1の軸方向L寸法を小さく抑えやすい。 According to this configuration, both the first shaft member 10 and the second shaft member 20 are positioned at the ends on the first side L1 in the axial direction by the first bearing 92 and the second bearing 93 having overlapping arrangement regions in the axial direction L. Therefore, the amount of protrusion of the first shaft member 10 and the second shaft member 20 toward the first side L1 in the axial direction can be kept small. Therefore, it is easy to keep the axial direction L dimension of the transmission 1 small.

第1軸部材10に、第1ギヤ12と第2ギヤ14とが支持されており、第2軸部材20に、第1ギヤ12に噛み合う第3ギヤ22と第2ギヤ14に噛み合う第4ギヤ24とが支持されており、第2ギヤ14及び第4ギヤ24は、第1ギヤ12及び第3ギヤ22に対して軸方向第1側L1に配置され、摩擦係合装置40は、第4ギヤ24よりも軸方向第1側L1に配置され、第1支持部材41は、第2軸部材20と一体的に回転するように連結され、第2支持部材42は、第4ギヤ24と一体的に回転するように連結されている。 A first gear 12 and a second gear 14 are supported by the first shaft member 10, and a third gear 22 meshing with the first gear 12 and a fourth gear meshing with the second gear 14 are mounted on the second shaft member 20. 24 are supported, the second gear 14 and the fourth gear 24 are arranged on the first side L1 in the axial direction with respect to the first gear 12 and the third gear 22, and the friction engagement device 40 is the fourth The first support member 41 is arranged on the first side L1 in the axial direction relative to the gear 24, the first support member 41 is connected to rotate integrally with the second shaft member 20, and the second support member 42 is integral with the fourth gear 24. connected so as to rotate

この構成によれば、第1支持部材41と第2軸部材20との連結及び第2支持部材42と第4ギヤ24との連結の双方を、第1押圧部材45に対して軸方向第2側L2において行いやすい。その結果、第1支持部材41及び第2支持部材42の双方を、第1押圧部材45及び第2押圧部材46の軸方向Lの押圧力の伝達経路と交差しないように配置することができる。よって、装置構成の簡素化を図ることができる。 According to this configuration, both the connection between the first support member 41 and the second shaft member 20 and the connection between the second support member 42 and the fourth gear 24 are arranged at the second axial position relative to the first pressing member 45 . Easy to do on side L2. As a result, both the first support member 41 and the second support member 42 can be arranged so as not to cross the transmission path of the pressing force in the axial direction L of the first pressing member 45 and the second pressing member 46 . Therefore, the simplification of the device configuration can be achieved.

軸方向Lに沿う軸方向視で、第1軸受92と第1摩擦材43及び第2摩擦材44とが重複するように配置されている。 As viewed in the axial direction along the axial direction L, the first bearing 92 and the first friction material 43 and the second friction material 44 are arranged so as to overlap each other.

この構成によれば、第1軸受92と第1摩擦材43及び第2摩擦材44とを径方向Rにずらして配置した構成に比べて、変速機1の径方向R寸法を小さく抑えることができる。よって、装置全体の大型化を効果的に抑制することができる。 According to this configuration, compared to a configuration in which the first bearing 92, the first friction member 43, and the second friction member 44 are shifted in the radial direction R, the radial dimension R of the transmission 1 can be kept small. can. Therefore, it is possible to effectively suppress an increase in the size of the entire device.

〔その他の実施形態〕
(1)上記の実施形態では、回転電機2が第1軸部材10と駆動連結されている構成を例として説明した。しかし、そのような構成に限定されることなく、回転電機2が第2軸部材20と駆動連結され、回転電機2と噛み合い式係合装置30と摩擦係合装置40とが第2軸X2上において同軸に配置されても良い。この場合、第1軸部材10に出力ギヤ25が形成されると良い。
[Other embodiments]
(1) In the above embodiment, the configuration in which the rotating electric machine 2 is drivingly connected to the first shaft member 10 has been described as an example. However, without being limited to such a configuration, the rotary electric machine 2 is drivingly connected to the second shaft member 20, and the rotary electric machine 2, the meshing engagement device 30, and the friction engagement device 40 are arranged on the second axis X2. may be arranged coaxially in In this case, it is preferable that the output gear 25 is formed on the first shaft member 10 .

(2)上記の実施形態では、第1支持部材41に、油溜め部56と摩擦材配置領域P以外の空間とを連通する第2油路82が設けられている構成を例として説明した。しかし、そのような構成に限定されることなく、例えば第1押圧部材45に第2油路82が設けられても良い。或いは、第1支持部材41及び第1押圧部材45の両方に第2油路82が設けられても良い。 (2) In the above embodiment, the configuration in which the first support member 41 is provided with the second oil passage 82 communicating between the oil reservoir 56 and the space other than the friction material arrangement region P has been described as an example. However, without being limited to such a configuration, for example, the second oil passage 82 may be provided in the first pressing member 45 . Alternatively, the second oil passages 82 may be provided in both the first support member 41 and the first pressing member 45 .

(3)上記の実施形態では、第1油路81が第1摩擦材支持部41Aを径方向Rに貫通するように形成されている構成を例として説明した。しかし、そのような構成に限定されることなく、例えば第1油路81が径方向Rに対して傾斜した方向に沿うように形成されても良い。 (3) In the above embodiment, the configuration in which the first oil passage 81 is formed so as to penetrate the first friction material support portion 41A in the radial direction R has been described as an example. However, without being limited to such a configuration, the first oil passage 81 may be formed along a direction inclined with respect to the radial direction R, for example.

(4)上記の実施形態では、第2油路82が第1径方向延在部41Bを軸方向Lに貫通するように形成されている構成を例として説明した。しかし、そのような構成に限定されることなく、例えば第2油路82が軸方向Lに対して傾斜した方向に沿うように形成されても良い。 (4) In the above embodiment, the configuration in which the second oil passage 82 is formed to penetrate the first radially extending portion 41B in the axial direction L has been described as an example. However, without being limited to such a configuration, the second oil passage 82 may be formed along a direction inclined with respect to the axial direction L, for example.

(5)上記の実施形態では、第2油路82の油溜め部56側に開口する第2開口部82aがシール部材51よりも径方向Rの内側であって付勢部材48よりも径方向Rの外側となる位置に配置されている構成を例として説明した。しかし、そのような構成に限定されることなく、第2開口部82aの位置は、第1開口部81aに対して径方向Rの内側に離間していれば任意の位置であって良い。例えば第2開口部82aは、軸方向視でシール部材51と重複する位置に配置されていても良いし、第1径方向延在部41Bにおける軸連結部41Cの近傍に配置されていても良い。 (5) In the above-described embodiment, the second opening 82a of the second oil passage 82 that opens toward the oil reservoir 56 is located radially inside the seal member 51 and radially relative to the biasing member 48. An example of a configuration that is arranged at a position outside R has been described. However, without being limited to such a configuration, the position of the second opening 82a may be any position as long as it is spaced inward in the radial direction R with respect to the first opening 81a. For example, the second opening 82a may be arranged at a position overlapping the seal member 51 when viewed in the axial direction, or may be arranged near the shaft connecting portion 41C in the first radially extending portion 41B. .

(6)上記の実施形態では、押圧駆動部49が油圧室49Aと作動油供給部49Bとを備える構成を例として説明した。しかし、そのような構成に限定されることなく、例えば押圧駆動部49が電動アクチュエータ等を備えて構成されても良い。 (6) In the above-described embodiment, the configuration in which the pressing drive section 49 includes the hydraulic chamber 49A and the hydraulic oil supply section 49B has been described as an example. However, without being limited to such a configuration, for example, the pressing drive section 49 may be configured to include an electric actuator or the like.

(7)上記の実施形態では、付勢部材48としてコイルバネを用いて構成されたリターンスプリングを用いる構成を例として説明した。しかし、そのような構成に限定されることなく、例えば付勢部材48として板バネ等を用いても良い。 (7) In the above-described embodiment, a configuration using a return spring configured using a coil spring as the biasing member 48 has been described as an example. However, without being limited to such a configuration, for example, a plate spring or the like may be used as the biasing member 48 .

(8)上記の実施形態では、摺動部45Aと第1摩擦材支持部41Aとの間にシール部材51が配置されている構成を例として説明した。しかし、そのような構成に限定されることなく、そのようなシール部材51が設けられていなくても良い。 (8) In the above embodiment, the configuration in which the seal member 51 is arranged between the sliding portion 45A and the first friction material support portion 41A has been described as an example. However, without being limited to such a configuration, such a sealing member 51 may not be provided.

(9)上記の実施形態では、第2押圧部材46の軸方向Lの配置領域D3の全体が、第1軸受92の軸方向Lの配置領域D1に含まれているとともに、第2軸受93の軸方向Lの配置領域D2と部分的に重複する構成を例として説明した。しかし、そのような構成に限定されることなく、例えば第2押圧部材46の軸方向Lの配置領域D3の全体が、第1軸受92の軸方向Lの配置領域D1及び第2軸受93の軸方向Lの配置領域D2の両方に含まれていても良い。或いは、第2押圧部材46の軸方向Lの配置領域D3が、第1軸受92の軸方向Lの配置領域D1及び第2軸受93の軸方向Lの配置領域D2のそれぞれと部分的に重複していても良い。 (9) In the above embodiment, the entire arrangement area D3 of the second pressing member 46 in the axial direction L is included in the arrangement area D1 of the first bearing 92 in the axial direction L, and A configuration that partially overlaps with the arrangement region D2 in the axial direction L has been described as an example. However, without being limited to such a configuration, for example, the entire arrangement region D3 of the second pressing member 46 in the axial direction L may be the arrangement region D1 of the first bearing 92 in the axial direction L and the axis of the second bearing 93. It may be included in both of the arrangement areas D2 in the L direction. Alternatively, the arrangement area D3 of the second pressing member 46 in the axial direction L partially overlaps the arrangement area D1 of the first bearing 92 in the axial direction L and the arrangement area D2 of the second bearing 93 in the axial direction L. It's okay to be there.

(10)上記の実施形態では、車両用駆動装置100を電動車両用の駆動装置に適用した構成を例として説明した。しかし、そのような構成に限定されることなく、本開示の技術は、例えば所謂エンジン車両や、エンジンと回転電機2とを併用するハイブリッド車両等、他のタイプの車両用駆動装置にも適用することが可能である。 (10) In the above embodiment, the configuration in which the vehicle drive system 100 is applied to an electric vehicle drive system has been described as an example. However, without being limited to such a configuration, the technology of the present disclosure can also be applied to other types of vehicle drive devices such as so-called engine vehicles and hybrid vehicles using both an engine and a rotating electric machine 2. It is possible.

(11)上述した各実施形態(上記の実施形態及びその他の実施形態を含む;以下同様)で開示される構成は、矛盾が生じない限り、他の実施形態で開示される構成と組み合わせて適用することも可能である。その他の構成に関しても、本明細書において開示された実施形態は全ての点で例示であって、本開示の趣旨を逸脱しない範囲内で適宜改変することが可能である。 (11) The configurations disclosed in each of the above-described embodiments (including the above-described embodiments and other embodiments; the same applies hereinafter) are applied in combination with the configurations disclosed in other embodiments unless there is a contradiction. It is also possible to Regarding other configurations, the embodiments disclosed in this specification are examples in all respects, and can be modified as appropriate without departing from the scope of the present disclosure.

1:変速機、2:回転電機、2A:ステータ、2B:ロータ、2C:ロータ軸、3:差動歯車機構、3A:差動入力ギヤ、4:出力部材、6:ケース、6A:第1ケース部、6Aa:第1周壁部、6Ab:第1支持壁部、6B:第2ケース部、6Ba:第2周壁部、6Bb:第2支持壁部、6C:第3ケース部、10:第1軸部材、12:第1ギヤ、13:第2ギヤ形成部材、14:第2ギヤ、20:第2軸部材、20a:軸方向油路、20b:径方向油路、21:第3ギヤ形成部材、22:第3ギヤ、23:第4ギヤ形成部材、24:第4ギヤ、25:出力ギヤ、30:噛み合い式係合装置、31:第1係合部、31A:連結部材、32:第2係合部、33:第3係合部、35:切替部材、40:摩擦係合装置、41:第1支持部材、41A:第1摩擦材支持部、41B:第1径方向延在部、41C:軸連結部、41d:連通油路、42:第2支持部材、42A:第2摩擦材支持部、42B:第2径方向延在部、43:第1摩擦材、44:第2摩擦材、45:第1押圧部材、45A:摺動部、45B:押圧部、46:第2押圧部材、47:保持部材、48:付勢部材、49:押圧駆動部、49A:油圧室、49B:作動油供給部、51:シール部材、52:シール部材、53:シール部材、55:潤滑油供給部、56:油溜め部、61:第1筒状支持部、62:第2筒状支持部、63:第3筒状支持部、81:第1油路、81a:第1開口部、82:第2油路、82a:第2開口部、91:ロータ軸受、92:第1軸受、93:第2軸受、95:スラスト軸受、100:車両用駆動装置、D1:配置領域、D2:配置領域、D3:配置領域、L:軸方向、L1:軸方向第1側、L2:軸方向第2側、P:摩擦材配置領域、R:径方向、W:車輪、X1:第1軸、X2:第2軸、X3:第3軸
1: transmission, 2: rotary electric machine, 2A: stator, 2B: rotor, 2C: rotor shaft, 3: differential gear mechanism, 3A: differential input gear, 4: output member, 6: case, 6A: first Case portion 6Aa: First peripheral wall portion 6Ab: First supporting wall portion 6B: Second case portion 6Ba: Second peripheral wall portion 6Bb: Second supporting wall portion 6C: Third case portion 10: Third 1 shaft member 12: first gear 13: second gear forming member 14: second gear 20: second shaft member 20a: axial oil passage 20b: radial oil passage 21: third gear Forming member 22: Third gear 23: Fourth gear forming member 24: Fourth gear 25: Output gear 30: Mesh engagement device 31: First engagement portion 31A: Connection member 32 : second engaging portion, 33: third engaging portion, 35: switching member, 40: friction engaging device, 41: first supporting member, 41A: first friction material supporting portion, 41B: first radial extension 41C: Shaft connection portion 41d: Communication oil passage 42: Second support member 42A: Second friction material support portion 42B: Second radially extending portion 43: First friction material 44: Second friction member, 45: first pressing member, 45A: sliding portion, 45B: pressing portion, 46: second pressing member, 47: holding member, 48: biasing member, 49: pressing driving portion, 49A: hydraulic pressure Chamber 49B: Hydraulic oil supply portion 51: Seal member 52: Seal member 53: Seal member 55: Lubricating oil supply portion 56: Oil reservoir 61: First cylindrical support portion 62: Second Cylindrical support portion 63: Third cylindrical support portion 81: First oil passage 81a: First opening 82: Second oil passage 82a: Second opening 91: Rotor bearing 92: Third 1 bearing, 93: second bearing, 95: thrust bearing, 100: vehicle drive device, D1: arrangement area, D2: arrangement area, D3: arrangement area, L: axial direction, L1: axial direction first side, L2 : second axial side, P: friction material arrangement area, R: radial direction, W: wheel, X1: first axis, X2: second axis, X3: third axis

Claims (5)

少なくとも1つのギヤを支持する第1軸部材と、
前記第1軸部材と平行に配置され、少なくとも1つのギヤを支持する第2軸部材と、
前記第2軸部材と同軸上に配置された摩擦係合装置と、
前記第1軸部材、前記第2軸部材、及び前記摩擦係合装置を収容するケースと、
前記ケースに対して前記第1軸部材を回転可能に支持する第1軸受と、
前記ケースに対して前記第2軸部材を回転可能に支持する第2軸受と、を備え、
前記摩擦係合装置は、第1支持部材、第2支持部材、第1摩擦材、第2摩擦材、第1押圧部材、第2押圧部材、及び押圧駆動部を備え、
前記第1支持部材は、回転可能に支持され、前記第1摩擦材を支持する第1摩擦材支持部を備え、
前記第2支持部材は、前記第1支持部材とは独立して回転可能に支持され、前記第2摩擦材を支持する第2摩擦材支持部を備え、
前記第2摩擦材支持部は、前記第1摩擦材支持部よりも径方向の外側に、前記第1摩擦材支持部と同軸に配置され、
前記第1摩擦材は、前記第1摩擦材支持部と一体的に回転するように連結され、
前記第2摩擦材は、前記第2摩擦材支持部と一体的に回転するように連結され、
前記第1軸部材及び前記第2軸部材と平行な方向を軸方向とするとともに、前記軸方向の一方側を軸方向第1側として、
前記第1摩擦材及び前記第2摩擦材は、前記第1摩擦材支持部と前記第2摩擦材支持部との前記径方向の間において、互いに前記軸方向に対向するように配置され、
前記第1押圧部材は、前記第1支持部材と一体的に回転するとともに当該第1支持部材に対して前記軸方向に移動自在に支持され、前記第1摩擦材と前記第2摩擦材とを互いに押し付けるように前記第1摩擦材及び前記第2摩擦材を前記軸方向第1側から押圧し、
前記第2押圧部材は、前記ケースに対して前記軸方向に移動自在に支持され、前記第1押圧部材と相対回転自在な状態で当該第1押圧部材を前記軸方向第1側から押圧し、
前記押圧駆動部は、前記第2押圧部材を前記軸方向に駆動し、
前記第2押圧部材は、前記第2軸受に対して前記径方向の外側であって、周方向における一部が前記第1軸受と前記第2軸受との間に配置され、
前記第2押圧部材の前記軸方向における配置領域が、前記第1軸受の前記軸方向における配置領域及び前記第2軸受の前記軸方向における配置領域の双方に重複している、変速機。
a first shaft member supporting at least one gear;
a second shaft member arranged parallel to the first shaft member and supporting at least one gear;
a friction engagement device arranged coaxially with the second shaft member;
a case that houses the first shaft member, the second shaft member, and the friction engagement device;
a first bearing that rotatably supports the first shaft member with respect to the case;
a second bearing that rotatably supports the second shaft member with respect to the case;
The friction engagement device includes a first support member, a second support member, a first friction member, a second friction member, a first pressure member, a second pressure member, and a pressure driving section,
the first support member includes a first friction material support portion that is rotatably supported and supports the first friction material;
The second support member is rotatably supported independently of the first support member, and includes a second friction material support portion that supports the second friction material,
The second friction material support portion is arranged radially outside the first friction material support portion and coaxially with the first friction material support portion,
The first friction material is connected to rotate integrally with the first friction material support,
The second friction material is connected to rotate integrally with the second friction material support,
A direction parallel to the first shaft member and the second shaft member is defined as an axial direction, and one side of the axial direction is defined as an axial direction first side,
The first friction material and the second friction material are arranged to face each other in the axial direction between the first friction material support portion and the second friction material support portion in the radial direction,
The first pressing member rotates integrally with the first supporting member and is supported by the first supporting member so as to be movable in the axial direction, and presses the first friction material and the second friction material. pressing the first friction material and the second friction material from the axial direction first side so as to press them against each other;
The second pressing member is supported movably in the axial direction with respect to the case, and presses the first pressing member from the first side in the axial direction while being rotatable relative to the first pressing member;
The pressing drive unit drives the second pressing member in the axial direction,
the second pressing member is disposed outside the second bearing in the radial direction and partially between the first bearing and the second bearing in the circumferential direction;
The transmission, wherein an arrangement area of the second pressing member in the axial direction overlaps both an arrangement area of the first bearing in the axial direction and an arrangement area of the second bearing in the axial direction.
前記ケースは、前記第2軸受を径方向外側から支持する筒状支持部を備え、
前記押圧駆動部は、前記第2押圧部材に油圧を作用させるための油圧室と、当該油圧室に油を供給する油供給部と、を備え、
前記油供給部が、前記ケースに形成され、
前記油圧室の内周面は、前記筒状支持部の外周面を用いて形成されている、請求項1に記載の変速機。
the case includes a cylindrical support portion that supports the second bearing from the radially outer side;
The pressing drive unit includes a hydraulic chamber for applying hydraulic pressure to the second pressing member, and an oil supply unit for supplying oil to the hydraulic chamber,
the oil supply portion is formed in the case,
2. The transmission according to claim 1, wherein an inner peripheral surface of said hydraulic chamber is formed using an outer peripheral surface of said cylindrical support portion.
前記第1軸受は、前記第1軸部材の前記軸方向第1側の端部を支持し、
前記第2軸受は、前記第2軸部材の前記軸方向第1側の端部を支持している、請求項1又は2に記載の変速機。
The first bearing supports an end portion of the first shaft member on the first side in the axial direction,
3. The transmission according to claim 1, wherein said second bearing supports an end portion of said second shaft member on said first side in the axial direction.
前記第1軸部材に、第1ギヤと第2ギヤとが支持されており、
前記第2軸部材に、前記第1ギヤに噛み合う第3ギヤと前記第2ギヤに噛み合う第4ギヤとが支持されており、
前記第2ギヤ及び前記第4ギヤは、前記第1ギヤ及び前記第3ギヤに対して前記軸方向第1側に配置され、
前記摩擦係合装置は、前記第4ギヤよりも前記軸方向第1側に配置され、
前記第1支持部材は、前記第2軸部材と一体的に回転するように連結され、
前記第2支持部材は、前記第4ギヤと一体的に回転するように連結されている、請求項1から3のいずれか一項に記載の変速機。
A first gear and a second gear are supported by the first shaft member,
a third gear meshing with the first gear and a fourth gear meshing with the second gear are supported by the second shaft member;
the second gear and the fourth gear are arranged on the first side in the axial direction with respect to the first gear and the third gear;
The friction engagement device is arranged on the first side in the axial direction with respect to the fourth gear,
The first support member is coupled to rotate integrally with the second shaft member,
4. The transmission according to any one of claims 1 to 3, wherein said second support member is connected to rotate integrally with said fourth gear.
前記軸方向に沿う軸方向視で、前記第1軸受と前記第1摩擦材及び前記第2摩擦材とが重複するように配置されている、請求項1から4のいずれか一項に記載の変速機。
5. The bearing according to any one of claims 1 to 4, wherein the first bearing, the first friction material, and the second friction material are arranged so as to overlap each other when viewed in the axial direction along the axial direction. transmission.
JP2021055751A 2021-03-29 2021-03-29 transmission Pending JP2022152824A (en)

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