JP2019052705A - Power transmission device - Google Patents

Abstract

To inhibit rising of an oil surface around a driven side rotary member which integrally rotates with a rotary shaft of an oil pump disposed with its axis offset from an input shaft of a transmission to reduce oil stirring resistance acting on the driven side rotary member.SOLUTION: A power transmission device includes: a transmission having an input shaft to which power from a prime mover is transmitted; a case which houses the transmission; an oil storage part defined below the input shaft in the case; an oil pump which is disposed with its axis offset from the input shaft; a driving side rotary member which is rotationally driven by the prime mover; a driven side rotary member which integrally rotates with a rotary shaft of the oil pump in conjunction with rotation of the driving side rotary member; a cover which at least partially encloses the driven side rotary member in a manner that the driven side rotary member is not immersed in oil in the oil storage part; and an oil inflow restriction part which is disposed above the driven side rotary member and restricts oil scattering from above from flowing into the cover.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to a power transmission device including an oil pump disposed on a shaft different from the input shaft below an input shaft of a transmission.

  Conventionally, as this type of power transmission device, one having a baffle plate that divides an oil sump in a transmission case is known (see, for example, Patent Document 1). The baffle plate of this power transmission device is arranged between the driven sprocket fixed to the pump shaft of the oil pump and the suction port of the oil strainer, and separates the space on the driven sprocket side and the space on the oil strainer side. A baffle plate body part having a portion and a baffle plate cover part which is joined to the chain cover part and surrounds the driven sprocket and the track embedded in the oil of the chain engaged with the driven sprocket.

JP 2012-102818 A

  By providing a baffle plate as described above for an oil pump that is arranged on a separate shaft from the input shaft of the transmission, the oil pool is surrounded by the driven sprocket, that is, between the chain cover part and the baffle plate cover part. The amount of oil flowing into the space can be reduced. However, if the driven sprocket is simply surrounded by the baffle plate as in the above-described conventional power transmission device, the oil level around the driven sprocket rises, and the stirring resistance of the oil acting on the driven sprocket cannot be reduced. There is a fear.

  Therefore, the present disclosure suppresses an increase in the oil level around the driven-side rotating member that rotates integrally with the rotating shaft of the oil pump that is disposed below the input shaft of the transmission and is separated from the input shaft. The main purpose is to satisfactorily reduce the oil stirring resistance acting on the driven side rotating member.

  A power transmission device according to an embodiment of the present disclosure includes a transmission having an input shaft to which power from a prime mover is transmitted, a case housing the transmission, and an oil storage section defined below the input shaft in the case. And a power transmission device including an oil pump disposed on a shaft different from the input shaft, and a drive-side rotation member that is rotationally driven by the prime mover, and a rotation of the drive-side rotation member, A driven-side rotating member that rotates integrally with the rotating shaft, a cover that at least partially surrounds the driven-side rotating member so that the driven-side rotating member is not immersed in the oil in the oil reservoir, and the driven-side rotating member And an oil inflow restricting portion that restricts the oil scattered from above from flowing into the cover.

  In this power transmission device, an oil reservoir is defined below the input shaft in the case that houses the transmission, and an oil pump is disposed on a separate shaft from the input shaft. The driven side rotating member is at least partially surrounded by a cover so as not to be immersed in the oil in the oil storage portion defined in the case, and the oil is rotated along with the rotation of the driving side rotating member that is rotationally driven by the prime mover. It rotates integrally with the rotary shaft of the pump. And the oil inflow control part which controls that the oil which scatters from upper direction flows in into a cover is arrange | positioned above the driven side rotation member. As a result, it is possible to satisfactorily suppress an increase in the oil level in the cover, that is, around the driven-side rotating member, and to satisfactorily reduce the oil stirring resistance acting on the driven-side rotating member.

It is a schematic structure figure showing the power transmission device of this indication. It is an expanded sectional view showing the important section of the power transmission device of this indication. It is an enlarged view which shows the principal part of the power transmission device of this indication.

  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 illustrating a power transmission device 20 of the present disclosure. The power transmission device 20 shown in the figure is mounted on a front wheel drive vehicle, and is disposed horizontally so that a crankshaft and left and right drive shafts 59 connected to drive wheels (not shown) are substantially parallel. It is configured as a transaxle that is connected to an engine (motor). As shown in the figure, the power transmission device 20 includes a transmission case 22 having a housing (first case) 22a and a case (second case) 22b that are integrally coupled, and a starting device that is housed inside the transmission case 22, respectively. 23, an oil pump 30, a forward / reverse switching mechanism 35, a belt type continuously variable transmission (hereinafter referred to as "CVT") 40, a gear mechanism 50, and a transmission having an input shaft 41 to which power from the engine is transmitted. A differential gear (differential mechanism) 57 and the like are included.

  The starting device 23 is accommodated in the housing 22 a of the transmission case 22. As shown in FIG. 1, the starting device 23 includes a pump impeller 23p connected to an engine crankshaft via a front cover 21 as an input member, and an input shaft 41 of a CVT 40 extending coaxially with the pump impeller 23p. The turbine runner 23t, the pump impeller 23p, and the stator 23s that are disposed inside the turbine runner 23t and rectify the flow of hydraulic fluid (ATF) from the turbine runner 23t to the pump impeller 23p are aligned with each other. A one-way clutch 23o, a damper mechanism 24, a lock-up clutch 25, and the like that limit the direction are included.

  When the rotational speed difference between the pump impeller 23p and the turbine runner 23t is large, the pump impeller 23p, the turbine runner 23t, and the stator 23s function as a torque converter having a torque amplification function by the action of the stator 23s, and the rotational speed difference therebetween is small. It will function as a fluid coupling. However, in the starting device 23, the stator 23s and the one-way clutch 23o may be omitted, and the pump impeller 23p and the turbine runner 23t may function as only a fluid coupling.

  The damper mechanism 24 includes, for example, an input element connected to the lockup clutch 25, an output element connected to the turbine runner 23t, and a plurality of elastic bodies arranged between the input element and the output element. The lockup clutch 25 selectively performs lockup and release of the lockup that mechanically connects the front cover 21 and the input shaft 41 of the CVT 40 (via the damper mechanism 24). The lock-up clutch 25 may be a single-plate hydraulic friction clutch as shown, or a multi-plate hydraulic friction clutch.

  The oil pump 30 is disposed on a separate shaft from the input shaft 41 in the hydraulic oil reservoir 220 (see FIG. 2) defined below the input shaft 41 of the CVT 40 by the housing 22a and the case 22b. In the present embodiment, the oil pump 30 is connected to the pump impeller 23p of the starting device 23 via the winding transmission mechanism 300, and is driven by the power from the engine. The oil pump 30 is driven by the engine, sucks the hydraulic oil stored in the hydraulic oil storage unit 220 through a strainer (not shown), and pumps it to a hydraulic control device (not shown).

  The forward / reverse switching mechanism 35 is housed in the case 22b and includes a double pinion planetary gear 36, a brake B1 and a clutch C1 as hydraulic friction engagement elements. The planetary gear 36 includes a sun gear fixed to the input shaft 41 of the CVT 40, a ring gear, a pinion gear meshing with the sun gear, and a carrier supporting the pinion gear meshing with the ring gear and coupled to the primary shaft 42 of the CVT 40. The brake B1 fixes the ring gear of the planetary gear 36 so as not to rotate with respect to the case 22b when the engagement hydraulic pressure is supplied from the hydraulic control device, and the ring gear is attached to the case 22b in response to the stop of the supply of the engagement hydraulic pressure. On the other hand, it releases freely. The clutch C1 connects the carrier of the planetary gear 36 to the input shaft 41 (sun gear) when the engagement hydraulic pressure is supplied from the hydraulic control device, and the carrier and the input shaft 41 according to the stop of the supply of the engagement hydraulic pressure. Disconnect from.

  Thus, when the brake B1 is released and the clutch C1 is engaged, the power transmitted to the input shaft 41 can be transmitted to the primary shaft 42 of the CVT 40 as it is to advance the vehicle. Further, when the brake B1 is engaged and the clutch C1 is released, the rotation of the input shaft 41 is converted in the reverse direction and transmitted to the primary shaft 42 of the CVT 40, and the vehicle can be moved backward. Furthermore, if the brake B1 and the clutch C1 are released, the connection between the input shaft 41 and the primary shaft 42 can be released.

  The CVT 40 includes a primary pulley 43 provided on a primary shaft (first axis) 42 as a driving side rotation axis, and a secondary shaft (second axis) 44 as a driven side rotation axis arranged in parallel with the primary shaft 42. A secondary pulley 45 provided, a transmission belt 46 wound around the pulley groove of the primary pulley 43 and the pulley groove of the secondary pulley 45, and a primary cylinder 47 which is a hydraulic actuator for changing the groove width of the primary pulley 43 And a secondary cylinder 48 which is a hydraulic actuator for changing the groove width of the secondary pulley 45. The primary pulley 43 includes a fixed sheave 43a formed integrally with the primary shaft 42, and a movable sheave 43b that is supported by the primary shaft 42 so as to be slidable in the axial direction via a spline. The secondary pulley 45 is axially supported by a fixed sheave 45a formed integrally with the secondary shaft 44, and supported by the secondary shaft 44 so as to be slidable in the axial direction via a spline and a return spring 49 which is a compression spring. And a movable sheave 45b that is biased.

  The primary cylinder 47 is formed behind the movable sheave 43 b of the primary pulley 43, and the secondary cylinder 48 is formed behind the movable sheave 45 b of the secondary pulley 45. The primary cylinder 47 and the secondary cylinder 48 are supplied with hydraulic pressure from a hydraulic control device so as to change the groove width between the primary pulley 43 and the secondary pulley 45. As a result, the power transmitted from the engine to the primary shaft 42 via the starting device 23 and the forward / reverse switching mechanism 35 can be steplessly shifted and transmitted to the secondary shaft 44. The power transmitted to the secondary shaft 44 is transmitted to the left and right drive wheels via the gear mechanism 50, the differential gear 57, and the drive shaft.

  The gear mechanism 50 includes a counter drive gear 51 that rotates integrally with the secondary shaft 44, and a counter shaft that extends in parallel with the secondary shaft 44 and the drive shaft 59 and is rotatably supported by the transmission case 22 via a bearing. (Third axis) 52, a counter driven gear 53 fixed to the counter shaft 52 and meshing with the counter drive gear 51, and a drive pinion gear formed integrally with the counter shaft 52 or fixed to the counter shaft 52 (Final drive gear) 54 and a differential ring gear (final driven gear) 55 that meshes with the drive pinion gear 54 and is connected to the differential gear 57.

  FIG. 2 is an enlarged cross-sectional view showing a main part of the power transmission device 20, and FIG. 3 is an enlarged view showing a main part of the power transmission device 20. As shown in FIG. 2, the oil pump 30 is attached to a pump housing 31 including a pump cover 31a and a pump body 31b, a rotary shaft 32 that is rotatably supported by the pump housing 31 via a bearing, and a rotary shaft 32. The vane pump has a rotor, a plurality of vanes 33, a cam ring (not shown), and the like. Further, as shown in FIG. 2, a winding transmission mechanism 300 for transmitting power from the pump impeller 23p to the oil pump 30 is fixed to a sleeve 23ps of the pump impeller 23p and coaxial with the pump impeller 23p and the input shaft 41 of the CVT 40. Drive sprocket (driving side rotating member) 301 that rotates in the direction of rotation, driven sprocket (driven side rotating member) 302 that is fixed to the rotating shaft 32 of the oil pump 30 and rotates integrally with the rotating shaft 32, drive sprocket 301, and driven sprocket 302 includes a chain (winding medium node) 303 wound around 302.

  As shown in FIG. 2, the oil pump 30 is disposed in the transmission case 22 such that the pump housing 31 is partially immersed in the oil in the hydraulic oil reservoir 220 defined by the housing 22 a and the case 22 b. . The pump housing 31 has a suction port (not shown) connected to a strainer (not shown) disposed in the hydraulic oil reservoir 220 and a discharge port (not shown) connected to the hydraulic control device. When the drive sprocket 301 of the winding transmission mechanism 300 is driven to rotate by the power from the engine, the driven sprocket 302 and the rotary shaft 32 connected to the drive sprocket 301 via the chain 303 rotate. As a result, the hydraulic oil stored in the hydraulic oil storage section 220 is sucked into the pump chamber of the oil pump 30 via a strainer and a suction port (not shown), and the hydraulic oil whose pressure is increased in the pump chamber is hydraulically controlled from the discharge port. It is supplied to a device (not shown).

  Furthermore, the power transmission device 20 includes a cover 100 that is fixed to the pump housing 31 of the oil pump 30. As shown in FIGS. 2 and 3, the cover 100 includes a first member 101 that is fixed to the pump cover 31 a via a plurality of bolts, and a second member 102 that is attached to the first member 101. The first member 101 is made of resin, and a back plate portion 103 that extends along one surface of the driven sprocket 302 between the pump cover 31 a and the driven sprocket 302, and a rotation shaft of the oil pump 30. 32 and a plurality of locking claws 105 extending from the back plate portion 103 so as to extend substantially parallel to the back plate portion 103, and the second member 102 side from the upper end portion of the back plate portion 103 of the first member 101 ( And an oil inflow restricting portion 107 extending in a bowl shape on the housing 22a side and the right side in FIG. In this embodiment, as shown in FIG. 3, the oil inflow restricting portion 107 has a width slightly smaller than the outer diameter of the driven sprocket 302, and extends from the pump cover 31a (pump housing 31) to the axial direction of the oil pump 30. It extends from the upper end part of the backplate part 103 so that it may incline to the upper side (drive sprocket 301 side) as it leaves | separates.

  The second member 102 is made of resin, and includes a side plate portion 104 having a substantially semicircular planar shape, and a peripheral wall portion 106 extending along the outer periphery of the side plate portion 104. The peripheral wall 106 of the second member 102 has a plurality of locking claws of the first member 101 after the first member 101 is fixed to the pump cover 31a of the oil pump 30 and the driven sprocket 302 is fixed to the rotary shaft 32. 105 and is elastically held by the plurality of locking claws 105. Thereby, the second member 102 is fixed to the first member 101 so that the side plate portion 104 faces the back plate portion 103 of the first member 101 with a gap between the driven sprockets 302. The substantially lower half of the driven sprocket 302 and the portion of the chain 303 that is wound around the driven sprocket 302 are surrounded by the first and second members 101 and 102 of the cover 100. In the present embodiment, a minute gap is formed between the first member 101 (back plate portion 103) and the second member 102 (circumferential wall portion 106), and the hydraulic oil reservoir 220 and the cover 100 are formed via the gap. A small amount of hydraulic oil can be circulated between the inside (the space defined by the first and second members 101 and 102). Thereby, the amount of oil necessary for lubricating the driven sprocket 302 and the like is ensured.

  When the cover 100, that is, the first and second members 101, 102 are fixed to the pump housing 31, the oil inflow restricting portion 107 of the first member 101 moves between the drive sprocket 301 and the driven sprocket 302 in the vertical direction. Located above the driven sprocket 302. In the present embodiment, the second oil inflow restricting portion is positioned above the oil inflow restricting portion 107 of the cover 100 between the drive sprocket 301 and the driven sprocket 302 in the vertical direction from the housing 22a of the transmission case 22. The protruding portion 22p is extended to the case 22b side (left side in FIG. 2). The protrusion 22p on the transmission case 22 side has substantially the same width as the oil inflow restricting portion 107 of the cover 100 (see FIG. 3). As shown in FIG. 2, a part of the oil inflow restricting portion 107 of the cover 100 is provided. And top and bottom.

  In the power transmission device 20 configured as described above, the hydraulic oil in which the portions of the driven sprocket 302 and the chain 303 that are wound around the driven sprocket 302 are defined in the transmission case 22 (housing 22a and case 22b). It is partially surrounded by the cover 100 so as not to be immersed in the hydraulic oil in the reservoir 220. In addition, during the operation of the power transmission device 20, the operation for lubrication supplied to the clutch C 1, the brake B 1, the planetary gear 36, the bearing that supports the input shaft 41, etc. of the forward / reverse switching mechanism 35 is provided around the oil pump 30. Oil will scatter from above. Based on this, in the power transmission device 20, the oil inflow restricting portion 107 of the cover 100 as described above is disposed above the driven sprocket 302, and the oil inflow restricting portion 107 scatters the oil into the cover 100 from above. Inflow is regulated. Thereby, since the rise of the oil level in the cover 100, that is, around the driven sprocket 302, can be satisfactorily suppressed, it is possible to satisfactorily reduce the agitation resistance of the oil acting on the driven sprocket 302.

  Further, in the power transmission device 20, a protruding portion (second oil inflow restricting portion) 22 p extends from the housing 22 a of the transmission case 22 so as to overlap with a part of the oil inflow restricting portion 107 of the cover 100 in the vertical direction. . As a result, the oil inflow restricting portion 107 of the cover 100 and the protruding portion 22p of the transmission case 22 form a labyrinth above the driven sprocket 302, so that the inflow of oil scattered from above into the cover 100 protrudes. The portion 22p and the oil inflow restricting portion 107 can be very well suppressed.

  Further, the oil inflow restricting portion 107 of the cover 100 is extended from the back plate portion 103 of the first member 101 so as to be inclined upward as it is separated from the pump housing 31 (pump cover 31a) of the oil pump 30. As a result, the hydraulic oil received by the oil inflow restricting portion 107 can flow down to the pump housing 31 side, so that the hydraulic oil scattered from above is returned to the hydraulic oil storage portion 220 while preventing the hydraulic oil from flowing into the cover 100. It becomes possible.

  Further, in the above-described embodiment, the cover 100 partially includes the first member 101 fixed to the housing of the oil pump 30 so as to extend along the driven sprocket 302 and the driven sprocket 302 together with the first member 101. The oil inflow restricting portion 107 is extended from the first member 101 to the second member 102 side. Accordingly, it is possible to satisfactorily suppress the rise of the oil level around the driven sprocket 302 by the cover 100 while ensuring the ease of assembly of the cover 100 and the driven sprocket 302 to the oil pump 30. Then, by forming the oil inflow restricting portion 107 in the cover 100 (first member 101), the degree of freedom of arrangement of the oil inflow restricting portion 107 can be improved, so that the oil splashed from above into the cover 100 can be obtained. It is possible to easily arrange the oil inflow restricting portion 107 at a proper position for restricting the inflow of the oil.

  In the power transmission device 20, the protrusion 22p may be omitted from the housing 22a of the transmission case 22. Further, if the protruding portion 22p is formed from the housing 22a, the oil inflow restricting portion 107 may be omitted from the cover 100. That is, the oil inflow restricting portion may be formed on at least one of the cover 100 and the transmission case 22 (housing 22a). The winding transmission mechanism 300 may include a belt as a winding intermediate node. Further, the transmission of the power transmission device 20 is not limited to the CVT 40, and may be a stepped transmission (AT) having at least one planetary gear, a dual clutch transmission (DCT), or a hybrid transmission.

  As described above, the power transmission device of the present disclosure includes the transmission (40) having the input shaft (41) to which the power from the prime mover is transmitted, and the case (22, 22a) that houses the transmission (40). 22b), the oil storage part (220) defined below the input shaft (41) in the case (22, 22a, 22b), and the input shaft (41) are arranged on separate axes. In the power transmission device (20) including the oil pump (30), the drive-side rotating member (301) rotated by the prime mover, and the oil pump ( 30) the driven side rotating member (302) rotating integrally with the rotating shaft (32) and the driven side rotating member (302) so that the driven side rotating member (302) is not immersed in the oil in the oil reservoir (220). At least part of the member (302) An enclosing cover (100), an oil inflow restricting portion (107) disposed above the driven side rotating member (302) and restricting the oil scattered from above into the cover (100). Is included.

  In this power transmission device, an oil reservoir is defined below the input shaft in the case that houses the transmission, and an oil pump is disposed on a separate shaft from the input shaft. The driven side rotating member is at least partially surrounded by a cover so as not to be immersed in the oil in the oil storage portion defined in the case, and the oil is rotated along with the rotation of the driving side rotating member that is rotationally driven by the prime mover. It rotates integrally with the rotary shaft of the pump. And the oil inflow control part which controls that the oil which scatters from upper direction flows in into a cover is arrange | positioned above the driven side rotation member. As a result, it is possible to satisfactorily suppress an increase in the oil level in the cover, that is, around the driven-side rotating member, and to satisfactorily reduce the oil stirring resistance acting on the driven-side rotating member.

  The oil inflow restricting portion (107) may be formed on the cover (100). Thereby, since the freedom degree of arrangement | positioning of an oil inflow control part can be improved, an oil inflow control part can be easily arrange | positioned in the appropriate position to control the inflow into the cover of the oil which scatters from upper direction. Is possible.

  Further, the cover (100) may be fixed to a pump housing (31, 31a) of the oil pump (30), and the oil inflow restricting portion (107) is separated from the pump housing (31, 31a). You may incline upward as you go. As a result, the oil received by the oil inflow restricting portion can be caused to flow down to the pump housing side, so that the oil scattered from above can be returned to the oil storing portion while preventing the oil from flowing into the cover.

  The cover (100) includes a first member (101) fixed to the pump housing (31, 31a) so as to extend along the driven side rotation member (302), and the first member ( 101) and a second member (102) attached to the first member (101) so as to at least partially surround the driven-side rotating member (302), and the oil inflow restricting portion (107) The second member (102) may be extended from the upper end of the first member (101, 103) so as to be positioned above the driven side rotating member (302). As a result, it is possible to satisfactorily suppress the rise of the oil level around the driven side rotating member by the cover while ensuring the ease of assembly of the cover and the driven sprocket to the oil pump.

  Further, the power transmission device (20) extends from the case (22, 22a) so as to vertically overlap at least a part of the oil inflow restricting portion (107) of the cover (100). An oil inflow restricting portion (22p) may be further included. As a result, the oil inflow restricting portion of the cover and the second oil inflow restricting portion of the case form a labyrinth above the driven side rotating member, so that the oil scattered from above flows into the cover. It becomes possible to suppress extremely well.

  The oil inflow restricting portion (22p) may be formed in the case (22, 22a). That is, the oil inflow restricting portion may be formed on at least one of the cover and the case.

  Further, the driven side rotating member (302) may be connected to the driving side rotating member (301) via a winding intermediate node (303). However, the drive side rotation member and the driven side rotation member may be included in the gear train.

  The oil pump (30) may be arranged so that at least a part of the oil pump (30) is immersed in the oil in the oil reservoir (220).

  And the invention of this indication is not limited to the above-mentioned embodiment at all, and it cannot be overemphasized that various changes can be made within the range of the extension of this indication. Furthermore, the above-described embodiment is merely a specific form of the invention described in the Summary of Invention column, and does not limit the elements of the invention described in the Summary of Invention column.

  The invention of the present disclosure can be used in the power transmission device manufacturing industry and the like.

  20 power transmission device, 21 front cover, 22 transmission case, 22a housing, 22b case, 22p protrusion, 23 starter, 23o one-way clutch, 23p pump impeller, 23ps sleeve, 23s stator, 23t turbine runner, 24 damper mechanism, 25 Lockup clutch, 30 Oil pump, 31 Pump housing, 31a Pump cover, 31b Pump body, 32 Rotating shaft, 33 Vane, 35 Forward / backward switching mechanism, 36 Planetary gear, 40 CVT, 41 Input shaft, 42 Primary shaft, 43 Primary Pulley, 43a Fixed sheave, 43b Movable sheave, 44 Secondary shaft, 45 Secondary pulley, 45a Fixed sheave, 45b Movable sheave, 46 Transmission base G, 47 Primary cylinder, 48 Secondary cylinder, 49 Return spring, 50 Gear mechanism, 51 Counter drive gear, 52 Counter shaft, 53 Counter driven gear, 54 Drive pinion gear, 55 Def ring gear, 57 Differential gear, 59 Drive shaft, 100 Cover, 101 1st member, 102 2nd member, 103 back plate part, 104 side plate part, 105 locking claw, 106 peripheral wall part, 107 oil inflow restricting part, 220 hydraulic oil storage part, 300 winding transmission mechanism, 301 drive sprocket, 302 Driven sprocket, 303 chain, B1 brake, C1 clutch.

Claims (8)

A transmission having an input shaft to which power from a prime mover is transmitted, a case for housing the transmission, an oil storage portion defined below the input shaft in the case, and the input shaft In a power transmission device including an oil pump disposed on a shaft,
A drive-side rotating member that is rotationally driven by the prime mover;
A driven side rotating member that rotates integrally with a rotation shaft of the oil pump as the driving side rotating member rotates,
A cover that at least partially surrounds the driven-side rotating member so that the driven-side rotating member is not immersed in the oil in the oil reservoir;
An oil inflow restricting portion that is disposed above the driven side rotation member and restricts oil scattered from above from flowing into the cover;
A power transmission device comprising:   The power transmission device according to claim 1, wherein the oil inflow restricting portion is formed on the cover. The power transmission device according to claim 2,
The cover is fixed to a pump housing of the oil pump;
The oil inflow restricting portion is a power transmission device that is inclined upward as it is separated from the pump housing. In the power transmission device according to claim 3,
The cover includes a first member fixed to the pump housing so as to extend along the driven side rotating member, and the first member so as to at least partially surround the driven side rotating member together with the first member. A second member attached to the member,
The oil inflow restricting portion extends from the upper end portion of the first member to the second member side so as to be positioned above the driven side rotating member. In the power transmission device according to any one of claims 2 to 4,
A power transmission device further comprising a second oil inflow restricting portion extending from the case so as to overlap vertically with at least a part of the oil inflow restricting portion of the cover.   The power transmission device according to claim 1, wherein the oil inflow restricting portion is formed in the case. In the power transmission device according to any one of claims 1 to 6,
The driven side rotating member is a power transmission device coupled to the driving side rotating member via a winding intermediate node. In the power transmission device according to any one of claims 1 to 7,
The said oil pump is a power transmission device arrange | positioned so that at least one part may be immersed in the oil in the said oil storage part.

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