JP7377148B2 - Vehicle drive system - Google Patents

Description

The present disclosure relates to a vehicle drive device.

Conventionally, this type of vehicle drive device includes a case that forms a first accommodation space that accommodates a transmission and a second accommodation space that accommodates a rotating electric machine, and a case that is provided below the first accommodation section to store oil. An oil storage system has been proposed that includes an oil storage section and an oil path that returns the oil supplied from the oil storage section to the rotating electric machine from the second storage space to the oil storage section (for example, see Patent Document 1). This oil passage has an opening that opens on an inclined surface toward the oil storage portion, and is provided with an opening/closing mechanism. The opening/closing mechanism includes an opening/closing member that is swingable about a swing axis extending along a horizontal direction orthogonal to the target direction (direction toward the front of the vehicle) and has a center of gravity below the swing axis. The opening/closing member is configured to close the opening by swinging so that the center of gravity moves in the target direction. With this configuration, the flow of oil in this oil passage is appropriately ensured during normal driving, while reducing the amount of oil that flows back through the oil passage when the vehicle is suddenly braked.

International Publication 2015/163357

If the oil passage that returns oil from the second storage space to the oil storage section opens toward the oil storage section on a wall that extends in the vertical direction of the case, the pivot axis (the support section that supports the opening/closing member) If the opening/closing member is provided on the wall surface, the opening/closing member closes the oil passage during normal driving due to its own weight, and there is a possibility that proper flow of oil in the oil passage cannot be ensured.

The present disclosure relates to a vehicle drive device in which a guide oil passage that guides oil to an oil reservoir is opened toward the oil reservoir on a wall surface that extends in the vertical direction of a case, and in which the flow of oil in the guide oil passage is prevented during normal driving. The main purpose is to prevent backflow of oil from the oil reservoir to the guide oil passage when the vehicle suddenly brakes.

The vehicle drive device of the present disclosure employs the following means to achieve the above-mentioned main objective.

The vehicle drive device of the present disclosure includes:
A vehicle drive device that is mounted on a vehicle and includes a rotating electrical machine and a case that accommodates the rotating electrical machine,
an oil storage section that is provided at the rear of the vehicle with respect to the case and stores oil;
a guide oil passage that guides oil supplied from the oil reservoir to cool the rotating electric machine to the oil reservoir and opens toward the oil reservoir on a wall surface extending in the vertical direction of the case;
It is rotatably suspended by a support part placed at a position spaced from the wall surface toward the rear of the vehicle, and in the installed state opens the guide oil passage, and by the action of a force forward of the vehicle, the support part is moved around the support part to the front of the vehicle. a closing member that can rotate to close the guide oil passage;
The main point is to have the following.

In the vehicle drive device of the present disclosure, the guide oil passage is rotatably suspended by a support part placed at a position spaced apart from the wall surface at the rear of the vehicle from the wall surface where the guide oil passage opens, and when installed, the guide oil passage is opened and the vehicle is forward facing. A closing member is provided that can be rotated forward of the vehicle around the support portion to close the guide oil passage under the action of the force. This ensures oil circulation in the guide oil passage during normal driving, while preventing oil from flowing back from the oil reservoir to the guide oil passage when the vehicle is suddenly braked (when a relatively large forward force is acting on the vehicle). can be suppressed.

1 is a schematic configuration diagram showing a hybrid drive device 10 of the present disclosure. 1 is an enlarged view showing main parts of a hybrid drive device 10. FIG.

Next, embodiments for carrying out the invention of the present disclosure will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing a hybrid drive device 10 of the present disclosure, and FIG. 2 is an enlarged view showing main parts of the hybrid drive device 10. The hybrid drive device 10 is mounted on the vehicle 1 to generate noise power for driving, and as shown in FIG. and a power transmission device 15. The hybrid drive device 10 may be mounted on a rear wheel drive vehicle as illustrated, or may be mounted on a front wheel drive vehicle, or may be mounted on a four wheel drive vehicle having a transfer connected to the power transmission device 15. Good too.

The engine 11 is configured as an internal combustion engine that converts the reciprocating motion of a piston (not shown) that accompanies the combustion of a mixture of air and a hydrocarbon fuel such as gasoline or light oil into the rotational motion of a crankshaft (output shaft) 12. A crankshaft 12 of the engine 11 is connected to a first transmission shaft 14a via a damper mechanism 13. For example, the damper mechanism 13 transmits torque between an input element connected to the crankshaft 12, an output element connected to the first transmission shaft 14a, and the input element and the output element, and attenuates torsional vibration. It has multiple coil springs (elastic bodies).

Motor generator MG is configured as a synchronous generator motor (three-phase AC motor), and exchanges power with a high-voltage power storage device (battery), not shown, via an inverter, not shown. Motor generator MG operates as an electric motor that is driven by electric power from the high voltage power storage device to generate drive torque, and also outputs regenerative braking torque when braking vehicle 1 . Furthermore, motor generator MG also operates as a generator that generates electric power using at least a portion of the power from engine 11 that is operated under load. As shown in FIGS. 1 and 2, motor generator MG is housed in motor case 8 together with clutch K0, and has a stator 20 and a rotor 30. Motor case 8 includes a housing 80 with one end (left end in FIGS. 1 and 2) open in the axial direction of motor generator MG, and a cover 89 fixed to housing 80 so as to cover the one end.

The stator 20 has an annular stator core 21 and a stator coil 22 wound around the stator core 21. The stator core 21 is integrally formed by, for example, laminating a plurality of electromagnetic steel sheets formed into an annular shape by press working and connecting them in the lamination direction. This stator core 21 is non-rotatably fixed to a cover 89 of the motor case 8 via a plurality of bolts 28 inserted into a plurality of bolt holes formed in the stator core 21. The stator coil 22 has three phase coils: U phase, V phase, and W phase.

As shown in FIG. 2, the rotor 30 includes a rotor core 31 and a holding member 40 that holds the rotor core 31. The rotor core 31 is formed, for example, by laminating a plurality of electromagnetic steel plates formed into an annular shape by press working. Further, a plurality of through holes (not shown) extending in the axial direction are formed in the rotor core 31 at intervals in the circumferential direction, and a permanent magnet (not shown) is embedded in each through hole.

The holding member 40 has an annular outer half 41 , an annular inner half 45 fixed to the outer half 41 , and an annular plate member 50 . Both the outer half portion 41 and the inner half portion 45 are formed by cutting a forged body made of steel material (iron alloy), for example. Further, the plate member 50 is also formed of steel.

As shown in FIG. 2, the outer half portion 41 includes a cylindrical outer tube portion 42, an annular flange portion 43 extending radially outward from one end (the left end in FIG. 2) of the outer tube portion 42, and an outer tube portion 42. It has an annular protrusion 44 that protrudes inward in the radial direction from the other end side (the right end side in FIG. 2) of the axially central portion of the cylindrical portion 42 over the entire circumference. The rotor core 31 is fixed to the outer cylindrical portion 42 of the holding member 40 by shrink fitting or the like.

The inner half portion 45 includes an annular wall portion 46 that extends in the radial direction, and a cylindrical inner cylinder portion 47 that extends from the inner peripheral portion of the annular wall portion 46 to one side in the axial direction (the left side in FIG. 2). a cylindrical portion 48 extending from the annular wall portion 46 to the other side in the axial direction (the right side in FIG. 2) at a radially outer side than the inner cylindrical portion 47; It has a short cylindrical protrusion 49 extending from the wall 46 to one side in the axial direction.

As shown in FIG. 2, the outer periphery of the annular wall 46 is fixed to the inner periphery of the protrusion 44 of the outer half 41 by welding. Further, the outer peripheral portion of the plate member 50 is fixed to the flange portion 43 of the holding member 40 (outer half portion 41) via a plurality of bolts so as to face the annular wall portion 46 with a space therebetween. Further, the outer peripheral surface of the cylindrical portion 48 of the holding member 40 (inner half 45) is rotatably supported by the housing 80 of the motor case 8 via a bearing, and the inner peripheral surface of the plate member 50 is supported via a bearing. The motor case 8 is rotatably supported by a cover 89 of the motor case 8. Thereby, the rotor 30 is rotatably supported by the motor case 8. Further, the inner peripheral portion of the cover 89 rotatably supports the first transmission shaft 14a via a bearing. The inner cylinder portion 47 of the holding member 40 is connected to the second transmission shaft 14b via a spline. Thereby, rotor 30 of motor generator MG is always connected to second transmission shaft 14b.

Clutch K0 connects first transmission shaft 14a (crankshaft 12 of engine 11) and second transmission shaft 14b (rotor 30 of motor generator MG), and also disconnects them. In this embodiment, the clutch K0 is a multi-disc friction hydraulic clutch that uses the holding member 40 of the rotor 30, which is always connected to the second transmission shaft 14b, as a clutch drum. placed on the inside. As shown in FIG. 2, in addition to the holding member 40 as a clutch drum, the clutch K0 includes a clutch hub 61 that is always connected to the first transmission shaft 14a, and a plurality of friction plates (first friction engagement plates) 63. , a plurality of separator plates (second frictional engagement plates) 64 and a backing plate 65 arranged alternately with the friction plate 63, a piston 67, a plurality of return springs (not shown), and a cancel plate (cancel oil chamber defining member) 68.

Clutch hub 61 has a cylindrical portion and an annular wall portion extending radially inward from one end (left end in FIG. 2) of the cylindrical portion. A spline is formed on the outer peripheral surface of the cylindrical portion. The inner periphery of the annular wall portion is fixed by welding to a flange portion extending from the first transmission shaft 14a. Further, as shown in FIG. 2, a spline is formed on the inner circumferential surface of the outer cylindrical portion 42 of the holding member 40 serving as the clutch drum so as to be located closer to the flange portion 43 than the protruding portion 44.

The friction plates 63 are annular members having friction materials adhered to both surfaces, and the outer circumferential portion of each friction plate 63 is fitted into a spline of the outer cylindrical portion 42 of the holding member 40. The separator plates 64 are annular members having smooth surfaces on both sides, and the inner peripheral portion of each separator plate 64 is fitted into a spline of the cylindrical portion of the clutch hub 61 . The backing plate 65 is fitted into the spline of the outer cylindrical portion 42 of the holding member 40 so that it can come into contact with the friction plate 63 furthest from the piston 67 among the plurality of friction plates 63 .

The piston 67 is supported by the outer circumferential surface of the inner cylindrical portion 47 of the holding member 40 and the inner circumferential surface of the protruding portion 49, respectively, via a seal member so as to be freely movable in the axial direction. An engagement oil chamber 69a of the clutch K0 is defined between the annular wall portion 46 of the holding member 40 and the piston 67.

The cancel plate 68 is an annular member arranged on the opposite side of the annular wall portion 46 of the holding member 40 with respect to the piston 67 . The inner peripheral part of the cancel plate 68 is fixed to the inner cylinder part 47 of the holding member 40 using a snap ring. Further, the outer circumferential surface of the cancel plate 68 supports the piston 67 so as to be movable in the axial direction via a seal member. Thereby, a centrifugal hydraulic pressure cancellation chamber 69b is defined between the piston 67 and the cancel plate 68 for canceling the centrifugal hydraulic pressure generated within the engagement oil chamber 69a.

The plurality of return springs are arranged at intervals in the circumferential direction between the piston 67 and the cancel plate 68 in the axial direction. Each return spring urges the piston 67 away from the friction plate 63 and the separator plate 64.

Motor case 8 accommodates motor generator MG, clutch K0, and the like. The housing 80 of the motor case 8 is formed by casting aluminum alloy, and has one axial end (the left end in FIG. 2), that is, the end on the engine 11 side, open, and the other axial end, that is, the end on the power transmission device 15 side. It is a substantially cylindrical body with a closed end. The cover 89 of the motor case 8 is a disc-shaped member formed by casting aluminum alloy. Cover 89 is fixed to housing 80 via a plurality of bolts.

The housing 80 has a cylindrical outer shell 81 and an end wall 82 that closes the other end of the outer shell 81. A front flange portion 81f having a plurality of bolt holes is formed on the outer periphery of one end (front end), that is, the open end side of the outer shell portion 81 of the housing 80, and the front flange portion 81f is inserted into the plurality of bolt holes. It is fastened (fixed) to the end (rear end) of the engine block 110 of the engine 11 via a plurality of bolts (see FIG. 1).

The other end of the outer shell 81 of the housing 80 protrudes beyond the end wall 82 to the side opposite to the front flange 81f. A rear flange portion 81r having bolt holes is formed. The rear flange portion 81r is fastened (fixed) to the front wall portion 151 of the transmission case 150 of the power transmission device 15 via a plurality of bolts inserted through a plurality of bolt holes (see FIG. 2).

A through hole 82h is formed in the center of the end wall 82 of the housing 80, and the second transmission shaft 14b projects toward the power transmission device 15 from the through hole 82h. A seal member is arranged in the gap between the second transmission shaft 14b and the through hole 82h. The inner peripheral portion of the flex plate 140 is fastened (fixed) to the tip of the second transmission shaft 14b protruding from the through hole 82h of the end wall 82 via a plurality of bolts. The outer circumferential portion of the flex plate 140 is fastened (fixed) via a plurality of bolts to a plurality of connecting pieces fixed (welded) to a front cover 160 of the torque converter 16 disposed within the transmission case 150.

The power transmission device 15 includes a torque converter (fluid transmission device) 16 having a torque amplification function, a lock-up clutch CL, a transmission mechanism (automatic transmission) 17, a mechanical oil pump 18, and a hydraulic control device that regulates the pressure of hydraulic oil. 19, it has a transmission case 150 and the like that accommodate the transmission mechanism 17 and the like. The torque converter 16 includes a front cover 160 (see FIG. 2) as an input member that is constantly connected to the second transmission shaft 14b via a flex plate 140 (see FIG. 2), and a pump impeller fixed to the front cover 160. , a turbine runner connected to the input shaft 17i of the transmission mechanism 17, and a stator that rectifies the flow of hydraulic oil from the turbine runner toward the pump impeller to amplify torque. However, the power transmission device 15 may have a fluid coupling without a stator instead of the torque converter 16. The lock-up clutch CL connects the front cover 160 and the input shaft 17i of the transmission mechanism 17, and also releases the connection between the two.

The transmission mechanism 17 is, for example, a 4- to 10-speed multi-stage transmission mechanism that includes an output shaft 17o, a plurality of planetary gears, and a plurality of clutches and brakes (shift engagement elements) in addition to an input shaft 17i. . The transmission mechanism 17 shifts the power transmitted from the second transmission shaft 14b to the input shaft 17i via either the torque converter 16 or the lock-up clutch CL in multiple stages, and transfers the power from the output shaft 17o to the differential gear DF. It outputs to the left and right drive wheels DW via. However, the transmission mechanism 17 may be a dual clutch transmission or a mechanical continuously variable transmission mechanism.

The oil pump 18 is a gear pump or a vane pump connected to the pump impeller of the torque converter 16 via a winding transmission mechanism, and is arranged on a different axis from the input shaft 17i of the transmission mechanism 17. The oil pump 18 is driven by power from the second transmission shaft 14b via a wrap transmission mechanism, and sucks hydraulic oil (ATF) stored in an oil pan 156 fixed to the lower part of the transmission case 150. It is force-fed to the hydraulic control device 19 and a hydraulic control device 70, which will be described later.

The hydraulic control device 19 is attached to the lower part of the transmission case 150 and above the oil pan 18 in the vehicle, and includes a valve body in which a plurality of oil passages are formed, a plurality of regulator valves, a plurality of linear solenoid valves, and the like. The hydraulic control device 19 regulates the hydraulic pressure (hydraulic oil) from the oil pump 18 and supplies it to the torque converter 16, the lock-up clutch CL, the clutches and brakes of the transmission mechanism 17, and the like. Transmission case 150 is a cast product made of aluminum alloy.

The hybrid drive device 10 also includes an oil pan 86 that is fixed to the lower part of the housing 80 of the motor case 8 and whose bottom surface is higher (shallower in depth) than the oil pan 156, and an oil pan 86 that supplies oil pressure to the clutch K0. It has a control device 70. The hydraulic control device 70 is attached to the lower part of the motor case 8 and above the oil pan 86 in the vehicle, and includes a valve body in which a plurality of oil passages are formed, a regulator valve, a linear solenoid valve, and the like. The hydraulic control device 70 regulates the hydraulic pressure from the oil pump 18 and supplies the engagement hydraulic pressure to the engagement oil chamber 69a of the clutch K0. Hydraulic oil drained from the hydraulic control device 70 is supplied to the centrifugal hydraulic cancel chamber 69b of the clutch K0. When the engagement oil pressure is supplied from the hydraulic control device 70 to the engagement oil chamber 69a, the piston 67 moves toward the cancel plate 68 due to the action of the engagement oil pressure, and the separator plate 64 and friction plate 63 are pressed. Clutch K0 is engaged by frictional engagement. Further, a portion of the hydraulic oil drained from the hydraulic control device 70 is supplied to the stator 20 and rotor 30 of the motor generator MG in the motor case 8 as a lubricating/cooling medium.

In this embodiment, as shown in FIGS. 1 and 2, the inside of the transmission case 150 is located closer to the housing 80 (front) than the transmission mechanism 17 to which hydraulic oil as a lubricant and cooling medium is supplied. A partition wall 158 is fixed or formed. Further, a sealing member is disposed in the gap between the partition wall 158 and the rotating element passing through it. As a result, when the motor case 8 is fixed to the transmission case 150, an accommodation space A for the torque converter 16 of the power transmission device 15 is defined between the end wall 82 of the housing 80 and the partition wall 158 of the transmission case 150 in the axial direction. will be accomplished.

This housing space A is separated from the inside of the motor case 8 and the space on the transmission mechanism 17 side with respect to the partition wall 158, which are spaces in which hydraulic oil is scattered, and communicates with the atmosphere through a vent hole (not shown). That is, the accommodation space A becomes an air chamber in which the inflow of hydraulic oil as a lubricating/cooling medium supplied to the motor generator MG and the transmission mechanism 17 is regulated. As a result, the presence of hydraulic oil around the torque converter 16, that is, the front cover 160 and the pump impeller is restricted, and agitation resistance can be reduced, so that the torque converter 16 can be operated efficiently.

A through hole 81h penetrating in the longitudinal direction of the vehicle is formed in a lower portion of the rear flange portion 81r of the outer shell portion 81 of the housing 80 of the motor case 8, slightly above the mounting position of the oil pan 86. Further, a through hole 151h is formed in a lower portion of the front wall portion 151 of the transmission case 150 above the mounting position of the oil pan 156, which penetrates in the vehicle longitudinal direction and communicates with the through hole 81h. When the oil level of the hydraulic oil stored in the oil pan 86 (the hydraulic oil drained from the hydraulic control device 70 and used for lubricating and cooling the motor generator MG) reaches the through hole 81h, the oil level on the oil pan 86 side Hydraulic oil flows to the oil pan 156 side through the through hole 81h and the through hole 151h. Hereinafter, the oil passage formed by the through hole 81h and the through hole 151h will be referred to as a "guide oil passage." The guide oil passage opens toward the oil pan 86 at a wall surface 81a extending in the vehicle longitudinal direction at the rear flange portion 81r of the outer shell portion 81 of the housing 80, and opens toward the oil pan 86 side at the front wall portion 151 of the transmission case 150 in the vehicle longitudinal direction. The extending wall surface 151a opens toward the oil pan 156.

A boss portion 153 extending toward the bottom of the vehicle is formed in the transmission case 150 at the rear of the vehicle with respect to the wall surface 151a and slightly above the guide oil passage. A plate member 170 is fixed to this boss portion 153 from below the vehicle via bolts 157, and a plate member 174 is connected to this plate member 170 via a connecting portion 172. The connecting portion 172 is configured as a connecting portion using a hinge, for example. In the plate member 170, the connecting portion 172 is located between the wall surface 151a of the transmission case 150 and the boss portion 153 in the vehicle longitudinal direction and slightly above the guide oil passage, and extends in the vehicle left-right direction. It is fixed to the boss portion 153 via a bolt 157 so as to extend along the boss portion 153 .

The plate member 174 is suspended by the connecting portion 172, has a center of gravity below the connecting portion 172 in the vehicle, and is rotatable around the connecting portion 172. The plate member 174 has a base 175 connected to the connecting portion 172 and an extending portion 176 extending from the base 175 via a bent portion. When the plate member 174 rotates counterclockwise from the solid line state (installed state) in FIG. 2 to the broken line state in FIG. The guide oil passage is formed so as to come into contact with the peripheral edge of the opening of the oil passage to close the guide oil passage. A recessed portion 177 is formed in the closed portion of the extending portion 176 and is recessed from the side opposite to the guide oil path toward the guide oil path. Here, the closed portion refers to a portion of the extending portion 176 that overlaps with the guide oil passage in the vehicle longitudinal direction when the guide oil passage is closed by the plate member 174. The recess 177 is formed to be accommodated in the guide oil passage when the guide oil passage is closed by the plate member 174.

In the hybrid drive device 10 configured in this manner, when no force is acting on the plate member 174 in the longitudinal direction of the vehicle, such as when the vehicle 1 is stopped or traveling at a substantially constant speed, the attached state is ( As shown by the solid line in FIG. 2), the guide oil passage (the through hole 81h and the through hole 151h) is opened. This allows the hydraulic oil on the oil pan 86 side to flow to the oil pan 156 side via the guide oil passage.

Then, when a vehicle forward force acts on the plate member 174, such as when the vehicle 1 is decelerating, the plate member 174 rotates clockwise in FIG. 2 around the connecting portion 172. In particular, when the vehicle forward force acting on the plate member 174 is larger than a threshold value, such as when the vehicle 1 is rapidly decelerating, the extending portion 176 of the plate member 174 is (periphery of the opening) to close the guide oil passage. When the vehicle 1 is rapidly decelerating, a relatively large forward force is applied to the hydraulic oil stored in the oil pan 156, but as the guide oil passage is closed by the plate member 174, the oil The hydraulic oil stored in the pan 156 can be prevented from entering the guide oil path (flowing back to the oil pan 86 side). In addition, since the plate member 174 has the recess 177, the recess 177 can catch hydraulic oil that is about to enter the guide oil passage from the oil pan 156 side, and this hydraulic oil allows the plate member 174 to prevent the guide oil passage from entering. A more complete closure can be achieved.

In the above-described embodiment, the plate member 174 has the recess 177, but the plate member 174 may not have the recess 177.

In the embodiment described above, the partition wall 158 is fixed or formed in the transmission case 150 so as to be located closer to the housing 80 (front side) than the transmission mechanism 17, and the end wall 82 of the housing 80 and the partition wall 158 of the transmission case 150 are connected to each other. A housing space A for the torque converter 16 of the power transmission device 15 is defined between the two in the axial direction. However, the partition wall 158 may not be fixed or formed within the transmission case 150.

As described above, the vehicle drive device of the present disclosure is mounted on a vehicle (1) and includes a rotating electrical machine (MG) and a case (8, 150) that accommodates the rotating electrical machine (MG). The drive device includes an oil storage part (156) that is provided at the rear of the vehicle with respect to the case (8, 150) and stores oil, and cools the rotating electric machine (MG) from the oil storage part (156). A guide that guides the oil supplied to the oil storage section (156) to the oil storage section (156) and opens toward the oil storage section (156) on a wall surface (151a) extending in the vertical direction of the case (8, 150). It is rotatably suspended by the oil passage (82, 151h) and a support part arranged at a position spaced from the wall surface (151a) toward the rear of the vehicle, and opens the guide oil passage (82, 151h) in the installed state. In addition, the present invention further includes a closing member (174) that can rotate toward the front of the vehicle around the support portion under the action of a force from the front of the vehicle to close the guide oil passage (82, 151h).

In the vehicle drive device of the present disclosure, the guide oil passage is rotatably suspended by a support part placed at a position spaced apart from the wall surface at the rear of the vehicle from the wall surface where the guide oil passage opens, and when installed, the guide oil passage is opened and the vehicle is forward facing. A closing member is provided that can be rotated forward of the vehicle around the support portion to close the guide oil passage under the action of the force. This ensures oil circulation in the guide oil passage during normal driving, while preventing oil from flowing back from the oil reservoir to the guide oil passage when the vehicle is suddenly braked (when a relatively large forward force is acting on the vehicle). can be suppressed.

In the vehicle drive device of the present disclosure, the closing member (174) includes a base (175) supported by the support portion, and extends from the base (175) via a bent portion and extends from the wall surface (151a). The guide oil passage (82, 151h) may be closed by an extension portion (176) that comes into contact with the guide oil passage (82, 151h). In this case, the extending portion (176) is provided with a guide such that the extending portion (176) is accommodated in the guiding oil passage (82, 151h) when the extending portion (176) comes into contact with the wall surface (151a). A recess (177) may be formed that is recessed from the opposite side to the oil passage (82, 151h) toward the guide oil passage (82, 151h). By doing this, when the vehicle suddenly brakes (when a relatively large forward force is acting on the vehicle), the recess can catch the oil that is about to enter the guide oil passage from the oil reservoir side, and this oil can be absorbed by the recess. This allows the guide oil passage to be more fully closed by the closing member.

In the vehicle drive device of the present disclosure, an engine (11), a transmission mechanism (17), a fluid transmission device (16) that transmits power of the rotating electrical machine (MG) to the transmission mechanism (17), and the engine The fluid transmission device (16) and the transmission mechanism (17) further include a clutch (K0) that connects the rotary electric machine (MG) and the front rotating electric machine (MG) and releases the connection between them. The case (8, 150) is arranged at the rear of the vehicle with respect to the rotating electrical machine (MG), and the case (8, 150) includes a first case part (8) that accommodates the rotating electrical machine (MG), the transmission mechanism (17), and the fluid transmission device ( 16), and the end of the first case part (8) on the vehicle rear side is connected to the end of the second case part (150) on the vehicle front side. fixed,
A space (A) in which the fluid transmission device (16) is disposed is provided between the first case part (8) and the partition wall (158) provided in the second case part (150) in the longitudinal direction of the vehicle. ), and the oil storage part (156) may be provided below the transmission mechanism (17) in the lower part of the second case part (150).

Although the embodiments for carrying out the present disclosure have been described above, the present disclosure is not limited to these embodiments in any way, and may be implemented in various forms without departing from the gist of the present disclosure. Of course.

The present disclosure can be used in the vehicle drive device manufacturing industry and the like.

1 vehicle, 8 motor case, 10 hybrid drive device, 11 engine, 12 crankshaft, 13 damper mechanism, 14a first transmission shaft, 14b second transmission shaft, 15 power transmission device, 16 torque converter, 17 transmission mechanism, 17i input Shaft, 17o Output shaft, 18 Oil pump, 19 Hydraulic control device, 20 Stator, 21 Stator core, 22 Stator coil, 28 Bolt, 30 Rotor, 31 Rotor core, 40 Holding member, 41 Outer half, 42 Outer cylinder part, 43 Flange part, 44 protruding part, 45 inner half part, 46 annular wall part, 47 inner cylinder part, 48 cylindrical part, 49 protruding part, 50 plate member, 61 clutch hub, 63 each friction plate, 63 friction plate, 64 separator plate ,, 65 backing plate, 66 snap ring, 67 piston, 68 cancel plate, 69a engaging oil chamber, 69b centrifugal hydraulic cancel chamber, 70 hydraulic control device, 80 housing, 81 outer shell, 81a wall, 81f front flange, 81h through hole, 81r rear flange, 82 end wall, 82h through hole, 86 oil pan, 89 cover, 110 engine block, 140 flex plate, 150 transmission case, 151 front wall, 151a wall, 151h through hole, 153 Boss part, 156 Oil pan, 157 Bolt, 158 Partition wall, 160 Front cover, 170, 174 Plate member, 172 Connecting part, 175 Base part, 176 Extending part, 177 Recessed part.

Claims (4)

A vehicle drive device that is mounted on a vehicle and includes a rotating electrical machine and a case that accommodates the rotating electrical machine,
an oil storage section that is provided at the rear of the vehicle with respect to the case and stores oil;
a guide oil passage that guides oil supplied from the oil reservoir to cool the rotating electric machine to the oil reservoir and opens toward the oil reservoir on a wall surface extending in the vertical direction of the case;
It is rotatably suspended by a support part placed at a position spaced from the wall surface toward the rear of the vehicle, and in the installed state opens the guide oil passage, and by the action of a force forward of the vehicle, the support part is moved around the support part to the front of the vehicle. a closing member that can rotate to close the guide oil passage;
A vehicle drive device comprising: The vehicle drive device according to claim 1,
The closing member has a base portion supported by the support portion, and an extension portion that extends from the base portion via a bent portion and can close the guide oil passage by contacting the wall surface.
Vehicle drive system. The vehicle drive device according to claim 2,
A recessed portion is formed in the extending portion, and the concave portion is recessed from a side opposite to the guide oil passage toward the guide oil passage so that the extending portion is accommodated in the guide oil passage when the extending portion contacts the wall surface. ing,
Vehicle drive system. A vehicle drive device according to any one of claims 1 to 3, comprising:
further comprising an engine, a transmission mechanism, a fluid transmission device that transmits power of the rotating electric machine to the transmission mechanism, and a clutch that connects the engine and the front rotating electric machine and disconnects the two;
The fluid transmission device and the transmission mechanism are arranged at the rear of the vehicle with respect to the rotating electric machine,
The case has a first case part that houses the rotating electric machine, and a second case part that houses the transmission mechanism and the fluid transmission device,
An end portion of the first case portion on the vehicle rear side is fixed to an end portion of the second case portion on the vehicle front side,
A space in which the fluid transmission device is disposed is defined between the first case part and the partition wall provided in the second case part in the vehicle longitudinal direction,
The oil storage part is provided below the transmission mechanism in the lower part of the second case part.
Vehicle drive system.

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