JP6305229B2 - Vehicle drive device - Google Patents

Description

  The present invention relates to a case main body housing a rotating electrical machine, a cover member joined to the case main body, a pump body joined to the cover member, and a pump chamber formed between the pump body and the cover member. The present invention relates to a vehicle drive device including a pump main body portion to be accommodated.

  A device described in Japanese Patent Application Laid-Open No. 2013-117218 (Patent Document 1) is known as such a vehicle drive device. The device of Patent Document 1 further flows through a discharge oil passage [oil passage 64] formed to extend from a pump chamber [pump chamber 62] between a cover member [rear cover 44] and a pump body [pump body 58]. A pressure regulating valve [control valves 74 and 76] for adjusting the internal pressure of the oil is provided. This pressure regulating valve has a valve element (valve element 58f) that opens and closes, and by discharging a part of the oil flowing through the discharge oil path from the discharge port when the valve element is open, It is comprised so that the internal pressure of may be adjusted. Note that the discharge port is a portion near the tip of the arrow indicated by reference numeral “74” above the pressure regulating valve [control valve 74] shown in FIG.

  In the device of Patent Document 1, when the valve element of the pressure regulating valve is opened, a part of the oil flowing through the discharge oil passage is discharged through a discharge port in a direction along the mating surface of the cover member and the pump body. The At this time, since the oil flowing through the discharge oil passage has a predetermined internal pressure, the discharged oil is vigorously moved toward the joint portion between the case main body portion and the cover member positioned in the discharge direction from the discharge port. Be injected. Normally, a sealing material is provided at the joint between the case main body and the cover member in order to properly seal between the two. .

JP2013-117218A

  Therefore, a vehicle drive device that can appropriately maintain the sealing performance of the joint portion between the case main body portion and the cover member while being able to adjust the internal pressure of the oil flowing through the oil passage discharged from the oil pump with a simple configuration. Realization of is desired.

A case body that houses the rotary electric machine,
A cover member joined to the case body so as to cover the shaft end of the rotating electrical machine;
A pump body joined to the cover member from the housing space side of the rotating electrical machine;
A pump body housed in a pump chamber formed between the pump body and the cover member;
A discharge oil passage formed in at least one of the cover member and the pump body so as to extend from the pump chamber;
The valve body is provided with a valve element that opens and closes, and when the valve element is open, a part of the oil flowing through the discharge oil passage is discharged from the discharge port to reduce the internal pressure of the oil flowing through the discharge oil passage. A pressure regulating valve to be adjusted;
A shielding wall portion that is provided in the pump body adjacent to the discharge port and shields a joint portion between the case main body portion and the cover member that is positioned ahead of the discharge direction of the oil from the discharge port. A vehicle drive device is disclosed .

  In the present application, the “rotary electric machine” is used as a concept including any of a motor (electric motor), a generator (generator), and a motor / generator that functions as both a motor and a generator as necessary.

  According to this configuration, the oil can be discharged from the pump chamber formed between the pump body and the cover member by the rotation of the pump body, and can be sent out through the discharge oil passage. A pressure regulating valve having a valve element is provided in the middle of the discharge oil path. When the valve element is open, a part of the oil flowing through the discharge oil path is discharged from the discharge port, and the oil flowing through the discharge oil path The internal pressure can be easily adjusted. At this time, the oil from the discharge port is jetted vigorously toward the joint portion between the case main body portion and the cover member positioned ahead in the discharge direction, but the shielding wall is adjacent to the discharge port as in this configuration. By providing the portion on the pump body, it is possible to avoid the flow of the discharged oil from hitting the joint portion. Therefore, peeling of the sealing material provided at the joint portion between the case main body portion and the cover member can be effectively suppressed, and as a result, the sealing performance of the joint portion can be appropriately maintained.

A first vehicle drive device according to the present invention includes:
A case body for housing the rotating electrical machine;
A cover member joined to the case body so as to cover the shaft end of the rotating electrical machine;
A pump body joined to the cover member from the housing space side of the rotating electrical machine;
A pump body housed in a pump chamber formed between the pump body and the cover member;
A discharge oil passage formed in at least one of the cover member and the pump body so as to extend from the pump chamber;
The valve body is provided with a valve element that opens and closes, and when the valve element is open, a part of the oil flowing through the discharge oil passage is discharged from the discharge port to reduce the internal pressure of the oil flowing through the discharge oil passage. A pressure regulating valve to be adjusted;
A sealing material provided at a joint between the case body and the cover member;
A shielding wall portion that is provided in the pump body adjacent to the discharge port and shields the joint portion positioned ahead of the discharge direction of the oil from the discharge port;
An intersecting wall portion formed integrally with the shielding wall portion and extending toward the discharge port side intersecting the extending direction of the shielding wall portion;
An oil supply unit that is provided above the rotating electrical machine in the case body and supplies oil;
A supply oil path that is provided in the pump body and forms a flow path of oil to a support bearing that supports the rotor of the rotating electrical machine,
The intersecting wall portion also serves as an oil receiving portion that receives oil dropped from the oil supply portion and guides it to the supply oil passage.

According to this configuration, the oil can be discharged from the pump chamber formed between the pump body and the cover member by the rotation of the pump body, and can be sent out through the discharge oil passage. A pressure regulating valve having a valve element is provided in the middle of the discharge oil path. When the valve element is open, a part of the oil flowing through the discharge oil path is discharged from the discharge port, and the oil flowing through the discharge oil path The internal pressure can be easily adjusted. At this time, the oil from the discharge port is jetted vigorously toward the joint portion between the case main body portion and the cover member positioned ahead in the discharge direction, but the shielding wall is adjacent to the discharge port as in this configuration. By providing the portion on the pump body, it is possible to avoid the flow of the discharged oil from hitting the joint portion. Therefore, peeling of the sealing material provided at the joint portion between the case main body portion and the cover member can be effectively suppressed, and as a result, the sealing performance of the joint portion can be appropriately maintained.
Moreover, it is possible to effectively suppress the oil discharged from the discharge port from being scattered over a wide range after being blocked by the shielding wall.
Further, the oil receiving portion can also be configured using the intersecting wall portion for suppressing the scattering of the discharged oil, and the oil dripped from the oil supply portion can be smoothly guided to the supply oil passage. Therefore, the support bearing that supports the rotor of the rotating electrical machine can be properly lubricated.

Hereinafter, preferred embodiments of the present invention will be described. However, the scope of the present invention is not limited by the preferred embodiments described below.

  As one aspect, the shielding wall is disposed radially outside the rotor of the rotating electrical machine, and has an opening at an end of the shielding wall opposite to the cover member side. It is preferable that the pump body is provided with a communication partition wall portion that partitions the exhaust port side space and the housing space for the rotating electrical machine while partially communicating with each other.

  According to this configuration, after being discharged from the discharge port, a part of the oil whose flow direction has been changed due to the presence of the shielding wall portion passes through the opening provided in the communication partition wall portion, and the accommodation space of the rotating electrical machine Can lead to. Since the opening is provided radially outside the rotor of the rotating electrical machine corresponding to the position of the shielding wall, oil can be supplied to a stator that is generally arranged radially outside the rotor. . Therefore, the stator can be cooled by utilizing a part of the oil discharged from the discharge port. In addition, since oil is not led from the portion of the communication partition wall other than the opening to the housing space of the rotating electrical machine, the oil is prevented from entering the air gap between the rotor and the stator, and drag loss occurs. Can be suppressed.

  As one aspect of the present invention, the cover member, the pump body, and the case main body have a bonding surface between the cover member and the case main body that is more than a bonding surface between the cover member and the pump body. The vehicular drive device is arranged to be positioned on the housing space side of the rotating electrical machine, and the inner peripheral surface of the cover member is formed so as to increase in diameter as it approaches the case body side. It is preferable.

As in this configuration, the joint surface between the cover member and the case main body is located closer to the housing space side of the rotating electrical machine than the joint surface between the cover member and the pump body, and the inner peripheral surface of the cover member approaches the case main body side. In the absence of the shielding wall portion, the oil from the discharge port easily reaches the joint portion between the case main body portion and the cover member vigorously in the absence of the shielding wall portion. In view of this point, the difference of the effect by the presence or absence of a shielding wall part appears notably by making the application object of this invention into the drive device for vehicles provided with said structure.
A second vehicle drive device according to the present invention includes:
A case body for housing the rotating electrical machine;
A cover member joined to the case body so as to cover the shaft end of the rotating electrical machine;
A pump body joined to the cover member from the housing space side of the rotating electrical machine;
A pump body housed in a pump chamber formed between the pump body and the cover member;
A discharge oil passage formed in at least one of the cover member and the pump body so as to extend from the pump chamber;
The valve body is provided with a valve element that opens and closes, and when the valve element is open, a part of the oil flowing through the discharge oil passage is discharged from the discharge port to reduce the internal pressure of the oil flowing through the discharge oil passage. A pressure regulating valve to be adjusted;
A sealing material provided at a joint between the case body and the cover member;
A shielding wall portion that is provided in the pump body adjacent to the discharge port and shields the joint portion positioned ahead of the discharge direction of the oil from the discharge port;
The shielding wall portion is disposed radially outside the rotor of the rotating electrical machine,
A communicating partition wall having an opening at the end of the shielding wall opposite to the cover member side and partitioning the space on the discharge port side and the housing space for the rotating electrical machine partially. A portion is provided on the pump body.
According to this configuration, the oil can be discharged from the pump chamber formed between the pump body and the cover member by the rotation of the pump body, and can be sent out through the discharge oil passage. A pressure regulating valve having a valve element is provided in the middle of the discharge oil path. When the valve element is open, a part of the oil flowing through the discharge oil path is discharged from the discharge port, and the oil flowing through the discharge oil path The internal pressure can be easily adjusted. At this time, the oil from the discharge port is jetted vigorously toward the joint portion between the case main body portion and the cover member positioned ahead in the discharge direction, but the shielding wall is adjacent to the discharge port as in this configuration. By providing the portion on the pump body, it is possible to avoid the flow of the discharged oil from hitting the joint portion. Therefore, peeling of the sealing material provided at the joint portion between the case main body portion and the cover member can be effectively suppressed, and as a result, the sealing performance of the joint portion can be appropriately maintained.
Further, after being discharged from the discharge port, part of the oil whose flow direction has been changed due to the presence of the shielding wall portion is guided to the housing space of the rotating electrical machine through the opening provided in the communication partition wall portion. Can do. Since the opening is provided radially outside the rotor of the rotating electrical machine corresponding to the position of the shielding wall, oil can be supplied to a stator that is generally arranged radially outside the rotor. . Therefore, the stator can be cooled by utilizing a part of the oil discharged from the discharge port. In addition, since oil is not led from the portion of the communication partition wall other than the opening to the housing space of the rotating electrical machine, the oil is prevented from entering the air gap between the rotor and the stator, and drag loss occurs. Can be suppressed.
A third vehicle drive device according to the present invention includes:
A case body for housing the rotating electrical machine;
A cover member joined to the case body so as to cover the shaft end of the rotating electrical machine;
A pump body joined to the cover member from the housing space side of the rotating electrical machine;
A pump body housed in a pump chamber formed between the pump body and the cover member;
A discharge oil passage formed in at least one of the cover member and the pump body so as to extend from the pump chamber;
The valve body is provided with a valve element that opens and closes, and when the valve element is open, a part of the oil flowing through the discharge oil passage is discharged from the discharge port to reduce the internal pressure of the oil flowing through the discharge oil passage. A pressure regulating valve to be adjusted;
A sealing material provided at a joint between the case body and the cover member;
A shielding wall portion that is provided in the pump body adjacent to the discharge port and shields the joint portion positioned ahead of the discharge direction of the oil from the discharge port;
The cover member, the pump body, and the case main body portion are such that a joint surface between the cover member and the case main body portion is located closer to a housing space of the rotating electrical machine than a joint surface between the cover member and the pump body. Arranged to
The inner peripheral surface of the cover member is formed so as to increase in diameter as it approaches the case body portion side.
According to this configuration, the oil can be discharged from the pump chamber formed between the pump body and the cover member by the rotation of the pump body, and can be sent out through the discharge oil passage. A pressure regulating valve having a valve element is provided in the middle of the discharge oil path. When the valve element is open, a part of the oil flowing through the discharge oil path is discharged from the discharge port, and the oil flowing through the discharge oil path The internal pressure can be easily adjusted. At this time, the oil from the discharge port is jetted vigorously toward the joint portion between the case main body portion and the cover member positioned ahead in the discharge direction, but the shielding wall is adjacent to the discharge port as in this configuration. By providing the portion on the pump body, it is possible to avoid the flow of the discharged oil from hitting the joint. Therefore, peeling of the sealing material provided at the joint portion between the case main body portion and the cover member can be effectively suppressed, and as a result, the sealing performance of the joint portion can be appropriately maintained.
In particular, as in this configuration, the joint surface between the cover member and the case main body is located closer to the housing space side of the rotating electrical machine than the joint surface between the cover member and the pump body, and the inner peripheral surface of the cover member is the case main body side. In the case where the diameter is increased so as to approach, the oil from the discharge port easily reaches the joint portion between the case main body portion and the cover member vigorously in the absence of the shielding wall portion. In view of this point, the difference in the effect due to the presence or absence of the shielding wall portion appears significantly when the application target of the present technology is the vehicle drive device having the above-described configuration.

Skeleton diagram of vehicle drive system Partial cross-sectional view of a vehicle drive device The exploded perspective view which looked at the case body and pump body from the case outside The perspective view which looked at the cover member from the case inside side Axial view of the cover member and pump body viewed from the inside of the case Axial view of pump body viewed from mating surface Side view of pump body Bottom view of pump body Sectional view of the vicinity of the joint surface between the case body and cover member

  An embodiment of a vehicle drive device according to the present invention will be described with reference to the drawings. The vehicle drive device 1 according to this embodiment includes a vehicle (hybrid vehicle) including both an internal combustion engine EG and a rotating electrical machine (first rotating electrical machine MG1 and second rotating electrical machine MG2) as a driving force source for wheels W of the vehicle. 1 is a vehicle drive device (a hybrid vehicle drive device) for driving the vehicle. Specifically, the vehicle drive device 1 is configured as a drive device for a two-motor split type hybrid vehicle.

  In the following description, unless otherwise specified, the “axial direction L”, “radial direction”, and “circumferential direction” are rotational axes of the input shaft I and the pump drive shaft 81 that are arranged coaxially with each other. It is defined as a standard. In addition, the direction about each member represents the direction in the state in which they were assembled | attached to the vehicle drive device 1. FIG. Moreover, the term regarding the direction, position, etc. about each member is a concept including the state which has the difference by the error which can be accept | permitted on manufacture.

  As shown in FIG. 1, the vehicle drive device 1 includes an input shaft I drivingly connected to the internal combustion engine EG, a planetary gear device PG, a first rotating electrical machine MG1, a second rotating electrical machine MG2, and wheels W. And an output shaft O that is drivingly connected. In addition, the vehicle drive device 1 includes a counter gear mechanism C, a differential gear device DF, and a power transmission path that connects an output gear G that rotates integrally with a ring gear R as an output element of the planetary gear device PG and an output shaft O. It has. These are accommodated in a case (drive device case) 2. Note that the case 2 is provided on the case main body 20 so as to cover the case main body 20 that houses main components of the vehicle drive device 1 such as the first rotary electric machine MG1 and the shaft end of the first rotary electric machine MG1. And a cover member (rear cover in this example) 30 to be joined (see FIG. 2 and the like).

  The input shaft I is drivingly connected to the internal combustion engine EG. The internal combustion engine EG is a prime mover (such as a gasoline engine or a diesel engine) that is driven by combustion of fuel inside the engine to extract power. In the present embodiment, the input shaft I is drivingly connected to the output shaft of the internal combustion engine EG (an internal combustion engine output shaft such as a crankshaft). Another device such as a damper or a clutch may be interposed between the input shaft I and the output shaft of the internal combustion engine EG. The input shaft I is connected so as to rotate integrally with the input shaft I and a pump drive shaft 81 arranged side by side in the axial direction L. Further, the input shaft I is drivingly connected to the planetary gear device PG.

  The planetary gear device PG has three rotating elements: a sun gear S, a carrier CA, and a ring gear R. That is, the planetary gear device PG includes a carrier CA that supports a plurality of pinion gears, and a sun gear S and a ring gear R that mesh with the pinion gears. In the present embodiment, the planetary gear device PG is configured as a single pinion type planetary gear mechanism. In the present embodiment, the first rotating electrical machine MG1 is connected to the sun gear S, the input shaft I is connected to the carrier CA, and the output gear G is connected to the ring gear R. As is well known, the planetary gear device PG distributes the torque of the internal combustion engine EG transmitted to the input shaft I to the first rotating electrical machine MG1 and the output gear G. The planetary gear device PG functions as a power distribution device.

  The first rotating electrical machine MG1 includes a first stator St1 fixed to the case 2 and a first rotor Ro1 that is rotatably supported on the radially inner side of the first stator St1. The first rotating electrical machine MG1 mainly functions as a generator that generates power by the torque of the input shaft I (internal combustion engine EG) input via the planetary gear device PG. The first rotor Ro1 is connected so as to rotate integrally with the rotor shaft 83. In the present embodiment, the first rotating electrical machine MG1 corresponds to the “rotating electrical machine” in the present invention, and the first rotor Ro1 corresponds to the “rotor” in the present invention.

  The rotor shaft 83 is disposed coaxially with the pump drive shaft 81 and radially outside the pump drive shaft 81. The rotor shaft 83 is supported in the radial direction by the support bearing 85 so as to be rotatable with respect to the pump body 40 (see FIG. 2). A sun gear S is formed at the end of the rotor shaft 83 on the internal combustion engine EG side. The planetary gear device PG is also arranged coaxially with the pump drive shaft 81 and radially outside the pump drive shaft 81.

  The pump drive shaft 81 is drivingly connected to the pump main body 10 constituting the mechanical pump MP. The pump drive shaft 81 is drivingly connected to the pump main body portion 10 at the end opposite to the planetary gear device PG side in the axial direction L with respect to the first rotating electrical machine MG1. As shown in FIG. 2, the pump body 10 includes an inner rotor 11 that has external teeth and rotates integrally with the pump drive shaft 81, and an annular outer rotor 12 that has internal teeth that mesh with the external teeth of the inner rotor 11. It has an internal gear type. In the present embodiment, the pump body 10 is accommodated in a pump chamber 41 formed between the cover member 30 constituting the case 2 and the pump body 40 joined to the cover member 30. In the present embodiment, the cover member 30 combines the function as the “rear cover” of the case 2 and the function as the “pump cover” constituting the mechanical pump MP.

  As shown in FIG. 1, the second rotating electrical machine MG2 includes a second stator St2 fixed to the case 2 and a second rotor Ro2 that is rotatably supported on the radially inner side of the second stator St2. The second rotating electrical machine MG2 mainly functions as a motor (assist motor) that assists the driving force for running the vehicle.

  An output gear G that rotates integrally with a ring gear R as an output element of the planetary gear device PG is drivingly connected to a counter gear mechanism C. The counter gear mechanism C is also drivingly connected to the second rotating electrical machine MG2. That is, the power transmission system from the planetary gear device PG side and the power transmission system from the second rotating electrical machine MG2 side merge at the counter gear mechanism C. The counter gear mechanism C is drivingly connected to a pair of left and right wheels W via a differential gear device DF and a pair of left and right output shafts O (only one output shaft O and wheels W are shown in FIG. 1). .

  In the present embodiment, the vehicle drive device 1 is configured to be able to travel a vehicle while switching between two travel modes, an HEV mode (hybrid travel mode) and an EV mode (electric travel mode). In the HEV mode, the first rotating electrical machine MG1 generates power while controlling the internal combustion engine EG so as to conform to the optimum fuel consumption characteristics (high efficiency and low exhaust gas), and a part of the torque of the internal combustion engine EG (required) In this case, the vehicle is driven by the torque of the second rotating electrical machine MG2. In the EV mode, the vehicle is driven by the torque of the second rotating electrical machine MG2 while the internal combustion engine EG is stopped. In addition, you may be comprised so that driving | running | working can be further switched to driving modes other than these.

  In the present embodiment, since the pump body 10 is driven by the pump drive shaft 81 that rotates integrally with the input shaft I, the mechanical pump MP does not operate during traveling in the EV mode in which the internal combustion engine EG is stopped. Therefore, the vehicle drive device 1 according to the present embodiment includes a configuration for circulating oil even when the mechanical pump MP is not in operation. The vehicle drive device 1 includes an oil supply mechanism OS that supplies oil to a portion that requires lubrication or the like by using the rotation of the output shaft O that always rotates while the vehicle is traveling. In the present embodiment, the oil supply mechanism OS scoops up the oil accumulated in the lower portion of the case 2 by the rotation of the differential input gear Di of the differential gear device DF that rotates integrally with the output shaft O, and scoops up the oil. The oil is configured to be supplied to the support bearing 85 and the like by the action of gravity.

  More specifically, the oil supply mechanism OS includes, in addition to the differential input gear Di, an oil storage unit 24 provided above the first rotating electrical machine MG1 in the case main body unit 20 as shown in FIG. An oil supply unit 25 serving as a supply port for oil stored in the oil storage unit 24; The oil storage part 24 is formed in a tank shape in which at least a part of the oil storage part 24 opens upward, and stores the oil scooped up by the rotation of the differential input gear Di. The oil supply unit 25 is formed in an elongated cylindrical shape and is disposed along the axial direction L, and supplies the oil stored in the oil storage unit 24 toward the cover member 30 side. The oil from the oil supply unit 25 is guided to a supply oil passage 43 formed in the pump body 40 installed below the oil supply unit 25 (see FIG. 3). The oil flows down through the supply oil passage 43 and is supplied to the support bearings 85 through the supply holes 44 that are formed through the radially inner end.

  On the other hand, during traveling in the HEV mode in which the internal combustion engine EG is driven, the input shaft I and the pump drive shaft 81 rotate, and the mechanical pump MP operates. The mechanical pump MP sucks the oil stored in the lower part of the case 2 through a strainer (not shown) and discharges the oil increased to a predetermined oil pressure, and supplies a hydraulic control device (not shown) and the like. To each part of the vehicle drive device 1. In the present embodiment, the mechanical pump MP is configured to have a pressure adjusting function that limits the hydraulic pressure of the discharged oil to a predetermined hydraulic pressure or less. Hereinafter, the details of such a mechanical pump MP with a pressure regulating function will be described.

  The mechanical pump MP is configured using a cover member 30 and a pump body 40 that are joined to each other. As shown in FIGS. 2 and 3, in this embodiment, a plate 60 is interposed between the cover member 30 and the pump body 40. A pump chamber 41 and oil passages 35, 36, 42, and 43 are formed between the cover member 30 and the plate 60 or between the pump body 40 and the plate 60. In this specification, “the cover member 30 and the pump body 40 are joined” includes an aspect in which both are directly joined and an aspect in which both are indirectly joined through the plate 60. It is a concept that includes both. The case body 20 and the cover member 30 are made of a light metal such as an aluminum alloy, for example. The plate 60 is made of a material (for example, a steel plate) having higher strength than the case main body 20 and the cover member 30.

  Cover member 30 is joined to case body 20 so as to cover the shaft end of first rotating electrical machine MG1. As shown in FIGS. 2 and 4, the cover member 30 has a mating surface between the end wall 31 covering the opening in the axial direction L of the peripheral wall portion 21 of the case main body portion 20 and the flange portion 22 of the case main body portion 20. And a flange portion 32 having the same. The joint surface between the flange portion 22 of the case body 20 and the flange portion 32 of the cover member 30 is the first joint surface F1. In addition, the cover member 30 is joined to the pump body 40 via the plate 60, and an oil passage forming portion for forming an oil passage (the suction oil passage 35 and the discharge oil passage 36) between the cover member 30 and the plate 60. 34 is further included. The oil passage forming portion 34 has the same outer shape (outline) as the pump body 40 and the plate 60 as a whole.

  The suction oil passage 35 is formed so as to extend downward along the vertical direction from a position corresponding to the pump chamber 41. The suction oil passage 35 communicates with an upper region of the suction oil passage 42 formed in the pump body 40 via a first series hole 61 formed in the plate 60 (see also FIG. 3). In this example, the discharge oil passage 36 is formed so as to extend laterally from a position corresponding to the pump chamber 41 in the substantially horizontal direction. The discharge oil passage 36 communicates with the pump chamber 41 through a second communication hole 62 formed in the plate 60, and the plate 60 is entirely exposed in portions other than the third communication hole 63 and the fourth communication hole 64. (See also FIG. 3). The discharge oil passage 36 is formed only on the cover member 30 side with respect to the plate 60. Normally, the third communication hole 63 and the fourth communication hole 64 are closed by the valve element 15 of the pressure regulating valve 14, and the pump body. It is configured not to communicate with the 40 side.

  The plate 60 has the same outer shape (outline) as the oil passage forming portion 34 of the cover member 30 and the pump body 40. As shown in FIG. 3, the plate 60 communicates the cover member 30 side and the pump body 40 side in addition to the insertion holes of fastening members (bolts and the like) for fixing to the cover member 30 and the pump body 40. The plurality of communication holes (in this example, the first series of communication holes 61 to the fifth communication hole 65). The first communication hole 61 communicates the suction oil passage 35 and the suction oil passage 42, and the second communication hole 62 communicates the pump chamber 41 and the discharge oil passage 36. The third communication hole 63 and the fourth communication hole 64 allow the discharge oil passage 36 and the two valve chambers 46 formed in the pump body 40 to communicate with each other. The fifth communication hole 65 communicates an oil discharge space 55 described later and a space facing the end wall 31 (a space outside the oil passage forming portion 34 in the cover member 30).

  The pump body 40 is joined to the cover member 30 from the housing space H side of the first rotating electrical machine MG1. The pump body 40 has the same outer shape (contour) as the oil passage forming portion 34 and the plate 60 of the cover member 30. As shown in FIGS. 3 and 6, the pump body 40 is formed with a recess for partitioning the pump chamber 41 and a plurality of oil passages (the suction oil passage 42 and the supply oil passage 43). In the present embodiment, the pump body 40 is also formed with a valve chamber 46 for arranging the pressure regulating valve 14 and a bearing support portion 49 (see FIG. 2) for supporting the support bearing 85. The bearing support portion 49 is a boss-like portion having a cylindrical inner peripheral surface that is formed to protrude in the axial direction L toward the housing space H side of the first rotating electrical machine MG1.

  The pump chamber 41 is formed at a position that is coaxial with the rotational axis of the pump drive shaft 81. The suction oil passage 42 is formed to extend downward from the pump chamber 41 along the vertical direction. A connection hole 48 is further formed in the lower end portion of the suction oil passage 42, and oil from the strainer is supplied to the suction oil passage 42 through an oil passage pipe (not shown) connected to the connection hole 48. Is done. The supply oil passage 43 is formed on the side of the pump chamber 41 so as to be inclined upward with respect to the horizontal direction so as to be positioned gradually upward from the radially inner side to the radially outer side. Yes. The supply oil passage 43 is formed only on the pump body 40 side with respect to the plate 60.

  As shown in FIG. 3, oil from an oil supply mechanism OS (oil supply unit 25) provided in the case body 20 is near the upper end (radially outer end) of the inclined supply oil passage 43. Supplied. A supply that penetrates the pump body 40 in the axial direction L and communicates between the supply oil passage 43 and the accommodation space H of the first rotating electrical machine MG1 at the lower end (radially inner end) of the inclined supply oil passage 43. A hole 44 is formed. The supply hole 44 is formed so as to be adjacent to a cylindrical inner peripheral surface constituting the bearing support portion 49 (see FIG. 5). The oil from the oil supply mechanism OS (oil supply unit 25) receives the action of gravity and flows down the supply oil passage 43, and then is guided to the accommodation space H of the first rotating electrical machine MG1 through the supply hole 44. . And it is supplied to the support bearing 85 fixed to the bearing support part 49, and the said support bearing 85 is lubricated. In this way, the supply oil passage 43 forms a flow path of oil to the support bearing 85 that supports the first rotor Ro1 of the first rotating electrical machine MG1.

  As shown in FIGS. 3 and 6, a valve chamber 46 for accommodating the pressure regulating valve 14 is formed adjacent to the upper side (radially outer side) region of the supply oil passage 43. In the present embodiment, two valve chambers 46 each having a cylindrical inner circumferential surface along the axial direction L are formed adjacent to each other with different positions in the radial direction and the circumferential direction. In addition, the site | part of the pump body 40 in which these two valve chambers 46 were formed is called "valve chamber formation part 45" in this embodiment. The valve chamber forming portion 45 is disposed on the upper side with respect to the supply oil passage 43. Each valve chamber 46 is configured to communicate with the supply oil passage 43 through a discharge port 47. In the present embodiment, the discharge ports 47 of the respective valve chambers 46 are formed so as to face radially outward and downward, generally opposite to the direction of inclination of the supply oil passage 43. In other words, the opening direction of the discharge port 47 is generally formed so as to face the vicinity of the upper end portion (radially outer end portion) of the supply oil passage 43.

  As shown in FIG. 2, the pressure regulating valve 14 accommodated in the valve chamber 46 includes a valve element 15 that opens and closes and a biasing spring 16 that biases the valve element 15. The valve element 15 is accommodated in the valve chamber 46 so as to be movable in the axial direction L. The urging spring 16 is accommodated in the valve chamber 46 and urges the valve element 15 in the valve closing direction (side toward the plate 60). The pressure regulating valve 14 keeps the oil flowing in the discharge oil passage 36 at the same oil pressure by making the discharge oil passage 36 oil-tight with the valve element 15 closed. On the other hand, when the oil pressure of the oil flowing through the discharge oil passage 36 rises to a predetermined oil pressure or higher, the pressure regulating valve 14 opens the valve element 15 and part of the oil flowing through the discharge oil passage 36 is discharged from the discharge port 47. The internal pressure of the oil discharged and flowing through the discharge oil passage 36 is adjusted. Thus, the pressure regulating valve 14 functions as a relief valve. The urging force of the urging spring 16 is preferably set based on a desired set pressure that defines the open / close state of the valve element 15. In this case, the valve opening set pressures of the urging springs 16 corresponding to the two pressure regulating valves 14 may be set to be different from each other. For example, when one of the two pressure regulating valves 14 is a spare pressure regulating valve 14, the valve opening set pressure of the urging spring 16 of the spare pressure regulating valve 14 is the pressure regulating valve 14 used mainly. The biasing spring 16 may be set slightly larger than the valve opening set pressure.

  In the present embodiment, the valve elements 15 of the two pressure regulating valves 14 are urged by the urging spring 16, and the third communication hole 63 and the fourth communication hole 64 of the plate 60 are connected to the pump body 40 side. Blocked. As a result, while the oil pressure of the oil flowing through the discharge oil passage 36 is less than the set pressure, the valve is closed and the discharge oil passage 36 is maintained in an oil-tight state. When the oil pressure of the oil flowing through the discharge oil passage 36 rises above the set pressure, the valve element 15 moves against the urging force of the urging spring 16 by the action of the pressing force by the oil pressure, and each urging spring 16 is set. According to the pressure, the closed state of the third communication hole 63 and / or the fourth communication hole 64 is released (valve open state). The valve element 15 of the pressure regulating valve 14 that has been opened opens the discharge oil passage 36 and the valve chamber 46 of the pump body 40 in communication. Thereby, a part of the oil flowing through the discharge oil passage 36 passes through the third communication hole 63 and / or the fourth communication hole, the valve chamber 46, and the discharge port 47, and the oil discharge space formed in the pump body 40. 55 is discharged.

  The oil discharge space 55 is a space adjacent to the valve chamber forming portion 45 at the tip of the opening direction of the discharge port 47 (the direction of discharging oil from the discharge port 47). In this embodiment, the oil discharge space 55 is formed in the vicinity of the upper end portion (radially outer end portion) of the supply oil passage 43, and is also a space (supplied space) to which oil from the oil supply portion 25 is supplied. For this reason, when the oil pressure of the oil flowing through the discharge oil passage 36 is equal to or higher than the valve opening set pressure, the support bearing 85 may be lubricated using a part of the oil discharged through the discharge port 47. it can.

  By the way, since the pressure regulating valve 14 is opened only when the hydraulic pressure of the oil flowing through the discharge oil passage 36 becomes equal to or higher than the set pressure, the oil from the discharge port 47 is jetted vigorously toward the oil discharge space 55. A joint 70 between the case body 20 and the cover member 30 is located at the tip of the oil discharge space 55 (the tip in the direction of oil discharge from the discharge port 47), as shown in FIG. 70 is provided with a sealing material 71. As the sealing material 71, for example, a liquid gasket such as FIPG (Formed in Place Gasket) or CIPG (Cured in Place Gasket) can be used. By using these liquid gaskets, there is an advantage that a gasket that follows the workpiece shape can be formed simply by changing the coating pattern. That is, even if the shape of the joint 70 between the case main body 20 and the cover member 30 is variously different for each solid of the vehicle drive device 1, each joint 70 can be easily formed from the inside of the case 2. There is an advantage that it can be sealed.

  As shown in FIGS. 3 and 6, the pump body 40 is provided with a shielding wall portion 51 adjacent to the discharge port 47 at the end opposite to the discharge port 47 side in the oil discharge space 55. ing. The shielding wall portion 51 is formed upward along the substantially vertical direction so as to cross the supply oil passage 43 and go upward at the upper end portion (radially outer end portion) of the supply oil passage 43. The shielding wall portion 51 shields the joint portion 70 between the case main body portion 20 and the cover member 30 located in the tip of the oil discharge direction from the discharge port 47 (see FIG. 9). The shielding wall portion 51 shields a portion of the joint portion 70 between the case main body portion 20 and the cover member 30 at a specific circumferential position (a circumferential position adjacent to the oil discharge space 55). Due to the presence of such a shielding wall portion 51, it is avoided that the flow of oil jetted from the discharge port 47 strikes the joint portion 70 between the case main body portion 20 and the cover member 30 positioned in the discharge direction. be able to. Therefore, peeling of the sealing material 71 provided in the joint portion 70 can be effectively suppressed, and as a result, the sealing performance of the joint portion 70 can be properly maintained.

  In particular, in the present embodiment, as shown in FIG. 9, the cover member 30, the pump body 40, and the case main body 20 have a first joint surface F <b> 1 between the cover member 30 and the case main body 20. It arrange | positions so that it may be located in the accommodation space H side of 1st rotary electric machine MG1 rather than the 2nd joint surface F2 with the body 40. FIG. The cover member 30 is formed in an inclined shape so that its inner peripheral surface gradually increases in diameter as it approaches the case body 20 side. For this reason, if the shielding wall 51 is not provided, the oil discharged from the discharge port 47 easily reaches the joint 70 between the case main body 20 and the cover member 30 vigorously. On the other hand, in this embodiment, since the junction part 70 is shielded by the shielding wall part 51, it can suppress effectively that the sealing material 71 provided in the junction part 70 peels with the flow of discharged oil. The sealing performance of the joint 70 can be properly maintained.

  The shielding wall 51 is disposed on the radially outer side than the first rotor Ro1 of the first rotating electrical machine MG1. The shielding wall 51 is disposed at a radial position corresponding to the first stator St1 of the first rotating electrical machine MG1. Further, as shown in FIGS. 5 and 6, the pump body 40 is along the plane orthogonal to the axial direction L at the end of the shielding wall 51 opposite to the cover member 30 side in the axial direction L. A communication partition wall 52 is provided. The communication partition wall portion 52 is formed with a first opening 56 that penetrates the communication partition wall portion 52 in the axial direction L. Due to the presence of the first opening 56, the communication partition wall 52 partitions the oil discharge space 55 and the housing space H of the first rotating electrical machine MG1 while partially communicating with each other. In the present embodiment, the first opening 56 corresponds to the “opening” in the present invention.

  In the present embodiment, in the vicinity of the shielding wall 51 in the pump body 40 (in the vicinity of the oil discharge space 55), in addition to the first opening 56, at least one other opening (in this example, the second opening). 57 and a third opening 58) are formed. As shown in FIG. 7, the shielding wall portion is formed in the housing space H side (the opposite side to the cover member 30 side) of the first rotating electrical machine MG1 in the axial direction L with respect to the first joint surface F1 in the shielding wall portion 51. A second opening 57 that penetrates 51 and opens to the side is formed. Further, as shown in FIG. 8, among the portions defining the lower surface of the supply oil passage 43 in the pump body 40, a first opening that opens downward in a portion near the radially outer end adjacent to the shielding wall portion 51. Three openings 58 are formed. The third opening 58 is formed in the housing space H side (the side opposite to the cover member 30 side) of the first rotating electrical machine MG1 in the axial direction L with respect to the first joint surface F1.

  In this embodiment, the 1st opening part 56, the 2nd opening part 57, and the 3rd opening part 58 are mutually connected without a boundary, and comprise the integral large opening part. The large opening is formed at the meeting portion of the oil discharge space 55 that is partitioned and formed in a substantially rectangular parallelepiped shape with the shielding wall 51, the communication partition wall 52, and the portion that partitions the lower surface of the supply oil passage 43 in the pump body 40. This corresponds to the cut off corners defined. A large opening composed of the first opening 56, the second opening 57, and the third opening 58 opens toward the accommodation space H side, the side side, and the lower side of the first rotating electrical machine MG1. . In the present embodiment, the opening areas of the openings 56 to 58 viewed from the opening direction are the first opening 56, the second opening 57, and the third opening 58 in descending order of the opening area. That is, the opening area of the second opening 57 is set larger than the opening area of the third opening 58, and the opening area of the first opening 56 is set larger than them.

  Further, in the present embodiment, as shown in FIGS. 3 and 5, a portion that overlaps the first opening 56 as viewed in the axial direction L in the plate 60 has a fifth that penetrates the plate 60 in the axial direction L. A communication hole 65 is formed. As regards the arrangement of the two members, “overlapping in a certain direction” means that when the virtual straight line parallel to the viewing direction is moved in each direction orthogonal to the virtual straight line, It means that a region intersecting with both members exists at least in part. The fifth communication hole 65 is also a “fourth opening” formed near the shielding wall 51 (near the oil discharge space 55). The fifth communication hole 65 is formed at the position of the second joint surface F2 that is closer to the cover member 30 in the axial direction L than the first joint surface F1. Thus, in this embodiment, the plurality of openings (the first opening 56 to the third opening 58 and the fifth communication hole 65) formed in the vicinity of the shielding wall 51 (in the vicinity of the oil discharge space 55) are as follows. Both are formed so as to avoid the position of the first joint surface F1 (sealing material 71).

  As shown in FIGS. 3 and 6, in the present embodiment, the pump body 40 is integrally formed with the shielding wall 51 and intersects the extending direction (substantially vertical direction) of the shielding wall 51. Further, an intersecting wall portion 53 extending toward the discharge port 47 is further provided. In the present embodiment, the intersecting wall portion 53 is inclined downward with respect to the horizontal direction so as to be gradually positioned downwardly from the radially outer side toward the radially inner side, substantially parallel to the supply oil passage 43. Is formed. The shielding wall portion 51 and the intersecting wall portion 53 that are provided integrally with the pump body 40 are bent to form a folded shape at the tip of the oil discharge direction from the discharge port 47 as a whole.

  In this embodiment, since the intersection wall portion 53 is further provided in addition to the shielding wall portion 51, the oil discharged from the discharge port 47 is scattered over a wide range after being blocked by the shielding wall portion 51. It can be effectively suppressed. In particular, it is possible to effectively suppress oil scattering upward from the pump body 40. Further, since the plurality of openings (the first opening 56 to the third opening 58 and the fifth communication hole 65) are provided in the vicinity of the shielding wall 51 (in the vicinity of the oil discharge space 55), the first joint surface F1 ( The oil can be dispersed in an appropriate direction while avoiding the position of the sealing material 71). Since the opening area of the first opening 56 is set to be relatively large among the plurality of openings, it passes through the first opening 56 and is located on the housing space H side of the first rotating electrical machine MG1 (here, the first opening 56). The amount of oil supplied to the stator St1) can be ensured appropriately. Therefore, the first stator St1 can be appropriately cooled. Since the oil is discharged also from other openings, it is possible to suppress an excessive amount of oil supplied to the first stator St1.

  In addition, oil is not supplied to the accommodation space H of the first rotating electrical machine MG1 from the portion other than the first opening 56 in the communication partition wall 52. For this reason, it is suppressed that oil penetrate | invades into the air gap between 1st stator St1 and 1st rotor Ro1, and generation | occurrence | production of drag loss can be suppressed.

  In the present embodiment, the intersecting wall portion 53 is disposed so that the whole overlaps with the third opening portion 58 when viewed in the vertical direction. The intersecting wall portion 53 is disposed so as to shield the third opening portion 58 as viewed from above vertically. The intersecting wall 53 is formed in a bowl shape extending from the shielding wall 51 with respect to the third opening 58. As shown in FIG. 3, the upper surface of the intersecting wall portion 53 is formed so as to form an oil receiving surface 53 a that receives oil dropped and supplied from the oil supply portion 25. That is, the oil dropped and supplied from the oil supply unit 25 is received by the oil receiving surface 53a configured by the upper surface of the intersecting wall portion 53, flows down along the oil receiving surface 53a, and the tip of the intersecting wall portion 53 Smoothly flows into the supply oil passage 43 from the section. Thus, in the present embodiment, the intersecting wall portion 53 receives the “scattering suppression portion” for suppressing the scattering of the discharged oil and the oil dropped from the oil supply portion 25 and guides it to the supply oil passage 43. Also serves as an “oil receiver”. As described above, the oil that has flowed into the supply oil passage 43 flows down the supply oil passage 43 and is supplied from the supply hole 44 to the support bearing 85 to lubricate the support bearing 85.

  If the intersecting wall portion 53 is not provided, the oil discharged from the discharge port 47 scatters over a wide range after being blocked by the shielding wall portion 51 and is supplied dropwise from the oil supply portion 25. Most of the oil passing through the third opening 58 is returned to the lower part of the case 2. Considering this point, it can be easily understood that the difference in the effect due to the presence or absence of the cross wall portion 53 is significant.

  As described above, according to the vehicle drive device 1 of the present embodiment, the case main body 20 and the cover can be adjusted while the hydraulic pressure flowing through the discharge oil passage 36 from the mechanical pump MP can be adjusted with a simple configuration. The sealing performance of the joint portion 70 with the member 30 can be properly maintained. Further, when traveling in the HEV mode, the pressure regulating valve 14 is opened according to the oil pressure in the discharge oil passage 36, and a part of the oil discharged from the discharge port 47 is used for the first rotary electric machine MG 1. The first stator St1 can be cooled. Further, regardless of the travel mode (even when traveling in the EV mode), the oil supplied dropwise from the oil supply unit 25 is smoothly guided to the support bearing 85, and the support bearing 85 is appropriately lubricated. can do.

[Other Embodiments]
Finally, other embodiments of the vehicle drive device according to the present invention will be described. Note that the configurations disclosed in the following embodiments can be applied in combination with the configurations disclosed in other embodiments as long as no contradiction arises.

(1) In the above embodiment, the configuration in which the discharge oil passage 36 extending from the pump chamber 41 is formed only on the cover member 30 side with respect to the plate 60 has been described as an example. However, the embodiment of the present invention is not limited to this. For example, the discharge oil passage 36 may be formed only on the pump body 40 side with respect to the plate 60. Alternatively, the discharge oil passage 36 may be formed across the cover member 30 and the pump body 40 through a communication hole formed in the plate 60.

(2) In the above embodiment, the plate 60 is inserted between the cover member 30 and the pump body 40, and between the cover member 30 and the plate 60 or between the pump body 40 and the plate 60, The configuration in which the pump chamber 41 and each oil passage are formed has been described as an example. However, the embodiment of the present invention is not limited to this. For example, even if the cover member 30 and the pump body 40 are directly joined without interposing the plate 60 therebetween, and the pump chamber 41 and each oil passage are formed in at least one of the cover member 30 and the pump body 40. good.

(3) In the above embodiment, the configuration including the intersecting wall portion 53 that is integrally formed with the shielding wall portion 51 and extends toward the discharge port 47 is described as an example. However, the embodiment of the present invention is not limited to this. Only the shielding wall part 51 may be provided without providing such an intersection wall part 53. In this case, it is preferable that a dedicated oil receiving portion that receives oil dropped from the oil supply portion 25 and guides it to the supply oil passage 43 is preferably provided separately.

(4) In the above embodiment, the cross wall portion 53 receives the oil splashed from the oil supply unit 25 and the oil receiver that guides the oil dropped from the oil supply unit 25 to the supply oil passage 43. A configuration that also serves as a unit has been described as an example. However, the embodiment of the present invention is not limited to this. In addition to the intersecting wall portion 53 for suppressing scattering of the discharged oil, a dedicated oil receiving portion that receives oil dropped from the oil supply portion 25 and guides it to the supply oil passage 43 may be provided.

(5) In the above embodiment, the oil stored in the lower portion of the case 2 is scraped up by the rotation of the differential input gear Di and stored in the oil storage unit 24, and the oil is supplied from the oil supply unit 25. Was described as an example. However, the embodiment of the present invention is not limited to this. For example, the oil discharged from the mechanical pump MP may be supplied from the oil supply unit 25 through a dedicated oil passage formed in the case 2. Or such an oil supply part 25 (oil supply mechanism OS) may not be provided.

(6) In the above embodiment, the example in which the first opening 56, the second opening 57, and the third opening 58 are connected to each other without a boundary to form an integral large opening has been described. However, the embodiment of the present invention is not limited to this. For example, any two of the first opening 56, the second opening 57, and the third opening 58 may be connected to each other without a boundary to form an integral opening, and the remaining one may be formed separately. . Alternatively, the first opening 56, the second opening 57, and the third opening 58 may be formed separately from each other.

(7) In the above-described embodiment, the opening areas viewed from the opening directions of the openings 56 to 58 are the first opening 56, the second opening 57, and the third opening 58 in descending order of the opening area. I explained the example. However, the embodiment of the present invention is not limited to this. The size relationship of the opening areas of the openings 56 to 58 may be arbitrarily set. In this case, the opening areas of the openings 56 to 58 may be set to be the same.

(8) In the above-described embodiment, the first joint surface F1 between the cover member 30 and the case main body 20 is larger than the second joint surface F2 between the cover member 30 and the pump body 40. The configuration is described as an example in which the inner peripheral surface of the cover member 30 is formed so as to increase in diameter as it approaches the case body 20 side while being located on the H side. However, the embodiment of the present invention is not limited to this. For example, if the inner peripheral surface of the case body 20 is formed so as to increase in diameter as it approaches the cover member 30 side, the first joint surface F1 is closer to the rear side (first rotation than the second joint surface F2). The present invention can also be suitably applied to a configuration that is located on the side opposite to the accommodation space H side of the electric machine MG1. Further, the present invention can be applied to a configuration in which the first joint surface F1 and the second joint surface F2 are positioned in the same axial direction L regardless of the shape of the inner peripheral surface of the cover member 30 or the case body 20. It can be suitably applied.

(9) In the above embodiment, the configuration in which the first rotating electrical machine MG1 and the second rotating electrical machine MG2 are arranged on different axes has been described as an example. However, the embodiment of the present invention is not limited to this. For example, the present invention can be suitably applied to a configuration in which the first rotating electrical machine MG1 and the second rotating electrical machine MG2 are arranged coaxially in the axial direction L. In this case, the cover member 30 may be joined to the case main body 20 so as to cover the shaft end portion of the second rotating electrical machine MG2, and the support bearing is connected to the second rotor Ro2 of the second rotating electrical machine MG2. The rotor shaft that rotates integrally may be rotatably supported. In such a configuration, the second rotating electrical machine MG2 corresponds to the “rotating electrical machine” in the present invention, and the second rotor Ro2 corresponds to the “rotor” in the present invention.

(10) Regarding other configurations, it should be understood that the embodiments disclosed herein are illustrative in all respects and that the scope of the present invention is not limited thereby. Those skilled in the art will readily understand that modifications can be made as appropriate without departing from the spirit of the present invention. Accordingly, other embodiments modified without departing from the spirit of the present invention are naturally included in the scope of the present invention.

  The present invention can be used in, for example, a drive device for a hybrid vehicle of a two-motor split type.

DESCRIPTION OF SYMBOLS 1 Vehicle drive device 10 Pump main-body part 14 Pressure regulating valve 15 Valve element 20 Case main-body part 25 Oil supply part 30 Cover member 36 Discharge oil path 40 Pump body 41 Pump chamber 43 Supply oil path 47 Discharge port 51 Shielding wall part 52 Communication division Wall 53 Crossing wall 53a Oil receiving surface 56 First opening (opening)
70 Joining portion 71 Sealing material 85 Support bearing MG1 First rotating electrical machine (rotating electrical machine)
Ro1 first rotor (rotor)
H accommodation space F1 1st joint surface (joint surface of a cover member and a case main-body part)
F2 Second joint surface (joint surface between cover member and pump body)

Claims (5)

A case body for housing the rotating electrical machine;
A cover member joined to the case body so as to cover the shaft end of the rotating electrical machine;
A pump body joined to the cover member from the housing space side of the rotating electrical machine;
A pump body housed in a pump chamber formed between the pump body and the cover member;
A discharge oil passage formed in at least one of the cover member and the pump body so as to extend from the pump chamber;
The valve body is provided with a valve element that opens and closes, and when the valve element is open, a part of the oil flowing through the discharge oil passage is discharged from the discharge port to reduce the internal pressure of the oil flowing through the discharge oil passage. A pressure regulating valve to be adjusted;
A sealing material provided at a joint between the case body and the cover member;
Provided in the pump body adjacent to the outlet, and a shielding wall for shielding the Kise' engaging portion before positioned in the discharge direction of the previous oil from the discharge port,
An intersecting wall portion formed integrally with the shielding wall portion and extending toward the discharge port side intersecting the extending direction of the shielding wall portion;
An oil supply unit that is provided above the rotating electrical machine in the case body and supplies oil;
A supply oil path that is provided in the pump body and forms a flow path of oil to a support bearing that supports the rotor of the rotating electrical machine ,
The vehicular drive apparatus in which the intersecting wall portion also serves as an oil receiving portion that receives oil dropped from the oil supply portion and guides it to the supply oil passage . The shielding wall portion is disposed radially outside the rotor of the rotating electrical machine,
A communicating partition wall having an opening at the end of the shielding wall opposite to the cover member side and partitioning the space on the discharge port side and the housing space for the rotating electrical machine partially. The vehicle drive device according to claim 1 , wherein a portion is provided in the pump body. The cover member, the pump body, and the case main body portion are such that a joint surface between the cover member and the case main body portion is located closer to a housing space of the rotating electrical machine than a joint surface between the cover member and the pump body. Arranged to
It said cover inner peripheral surface of the member, a vehicle drive device according to claim 1 or 2 is formed to diameter as it approaches to the case body side. A case body for housing the rotating electrical machine;
A cover member joined to the case body so as to cover the shaft end of the rotating electrical machine;
A pump body joined to the cover member from the housing space side of the rotating electrical machine;
A pump body housed in a pump chamber formed between the pump body and the cover member;
A discharge oil passage formed in at least one of the cover member and the pump body so as to extend from the pump chamber;
The valve body is provided with a valve element that opens and closes, and when the valve element is open, a part of the oil flowing through the discharge oil passage is discharged from the discharge port to reduce the internal pressure of the oil flowing through the discharge oil passage. A pressure regulating valve to be adjusted;
A sealing material provided at a joint between the case body and the cover member;
Wherein adjacent the discharge opening and provided in the pump body, and a shielding wall for shielding the Kise' engaging portion before positioned in the discharge direction of the previous oil from the discharge port,
The shielding wall portion is disposed radially outside the rotor of the rotating electrical machine,
A communicating partition wall having an opening at the end of the shielding wall opposite to the cover member side and partitioning the space on the discharge port side and the housing space for the rotating electrical machine partially. The vehicle drive device in which a part is provided in the pump body . A case body for housing the rotating electrical machine;
A cover member joined to the case body so as to cover the shaft end of the rotating electrical machine;
A pump body joined to the cover member from the housing space side of the rotating electrical machine;
A pump body housed in a pump chamber formed between the pump body and the cover member;
A discharge oil passage formed in at least one of the cover member and the pump body so as to extend from the pump chamber;
The valve body is provided with a valve element that opens and closes, and when the valve element is open, a part of the oil flowing through the discharge oil passage is discharged from the discharge port to reduce the internal pressure of the oil flowing through the discharge oil passage. A pressure regulating valve to be adjusted;
A sealing material provided at a joint between the case body and the cover member;
Wherein adjacent the discharge opening and provided in the pump body, and a shielding wall for shielding the Kise' engaging portion before positioned in the discharge direction of the previous oil from the discharge port,
The cover member, the pump body, and the case main body portion are such that a joint surface between the cover member and the case main body portion is located closer to a housing space of the rotating electrical machine than a joint surface between the cover member and the pump body. Arranged to
The vehicle drive device formed so that the inner peripheral surface of the cover member may increase in diameter as it approaches the case main body side .

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