JP7436229B2 - Device - Google Patents

Description

The present invention relates to an apparatus.

Patent Document 1 discloses a structure in which a bearing is arranged inside a rotating electrical machine.

Japanese Patent Application Publication No. 2011-126460

In such a structure, it is preferable to improve the lubrication efficiency of the bearing.

The present invention has been made in view of such technical problems, and an object of the present invention is to improve the lubrication efficiency of bearings.

According to an aspect of the present invention, the rotary electric machine includes a bearing provided in a housing of the rotary electric machine, and a supply member that supplies oil to an upper part of the rotary electric machine, and when viewed from the axial direction, the A catch part is provided above the bearing, and the catch part has an inlet for introducing oil flowing down from the rotating electric machine side, and an outlet for letting the oil introduced from the inlet flow down to the bearing side, The horizontal width of the outlet is narrower than the horizontal width of the inlet, and the housing includes a cylindrical part that projects in the axial direction, and an upper part of the cylindrical part that is disposed relative to the outer peripheral surface of the cylindrical part. and the catch part is a recessed part provided toward the inner peripheral side in the radial direction, and the recessed part reaches an end face in the axial direction along the cylindrical part. .

According to the above aspect, the oil flowing down from the rotating electrical machine side is collected by the catch part and allowed to flow down to the bearing side, so that the bearing can be efficiently lubricated.

1 is a schematic configuration diagram of a hybrid vehicle equipped with a power transmission device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the rotating electric machine. FIG. 3 is a view of the catch section viewed from the axial direction. It is a figure which looked at the modification of a catch part from the axial direction.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A hybrid vehicle (hereinafter simply referred to as "vehicle") including a power transmission device 10 as a device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic configuration diagram of a vehicle 100. As shown in FIG. 1, vehicle 100 includes engine 1 and power transmission device 10 provided in a power transmission path connecting engine 1 and drive wheels 5. As shown in FIG.

In this embodiment, the power transmission device 10 is a transmission, and includes a variator 20, a forward/reverse switching mechanism 30, and a rotating electric machine 40.

Rotating electric machine 40 is provided between variator 20 and engine 1 in a power transmission path.

The rotating electric machine 40 includes a stator case 41, a cover 42 provided at the opening of the stator case 41 on the engine 1 side, a stator 43 provided on the inner periphery of the stator case 41, a rotating shaft 44, and a rotating shaft 44. , a rotation sensor 47 provided on the cover 42 , and a clutch 48 that connects and disconnects the rotor 80 and the input shaft 11 . The rotor 80 includes a rotor frame 81 and a core 82 provided on the outer periphery of the rotor frame 81. In this embodiment, the stator case 41 and the cover 42 constitute a housing of the rotating electric machine 40.

The rotating electric machine 40 is assembled in advance as a unit in which each component is housed in a stator case 41 and a cover 42. The rotating electric machine 40 is fixed to the power transmission device 10 by fastening the cover 42 to the case 12 with bolts (not shown) while being housed in the case 12 of the power transmission device 10 . By attaching the rotary electric machine 40 to the case 12 as a unit, the ease of assembling the power transmission device 10 is improved.

The input shaft 11 is rotatably supported by the cover 42 via a bearing 50, and receives the output rotation of the engine 1. Further, the rotating shaft 44 is rotatably supported by the stator case 41 via a bearing 51.

The clutch 48 is a normally open hydraulic clutch that connects and disconnects the rotor 80 and the input shaft 11. The engagement and disengagement of the clutch 48 are controlled by hydraulic pressure regulated by a hydraulic control valve unit (not shown). In this embodiment, the clutch 48 is a wet multi-plate clutch, but other clutches may be used.

When the clutch 48 is engaged, the input shaft 11 and the rotor 80 are directly connected. That is, the input shaft 11 and the rotating shaft 44 are directly connected and rotate at the same speed.

The rotation sensor 47 is a sensor that is provided on the cover 42 and detects at least one of the rotation speed and angle (phase) of the rotor 80 of the rotating electric machine 40. In this embodiment, the rotation sensor 47 is a Hall sensor, and a magnet 52, which is a detected portion of the rotation sensor 47, is attached to a holding member 49 fixed to the rotor 80.

Note that, as the rotation sensor 47, another sensor that detects the rotation speed or another sensor that detects the angle may be used. Further, the magnet 52 is a permanent magnet, an electromagnet, or the like. When using an electromagnet, a slip ring or the like may be used to supply current to the electromagnet.

The rotating electrical machine 40 can operate as an electric motor that receives power from a battery (not shown) and is driven to rotate. Further, the rotating electrical machine 40 functions as a generator when the rotor 80 receives rotational energy from the drive wheels 5, and can charge the battery.

The variator 20 includes a primary pulley 2 and a secondary pulley 3 that are arranged so that their V-grooves are aligned, and a belt 4 that is stretched across the V-grooves of the pulleys 2 and 3.

An engine 1 is arranged coaxially with the primary pulley 2, and a rotating electric machine 40 and a forward/reverse switching mechanism 30 are provided between the engine 1 and the primary pulley 2 in this order from the engine 1 side.

The forward/reverse switching mechanism 30 has a double pinion planetary gear set 30a as a main component, a sun gear of which is coupled to a rotating shaft 44 of a rotating electrical machine 40, and a carrier coupled to a primary pulley 2 of a variator 20. The forward/reverse switching mechanism 30 further includes a forward clutch 30b that directly connects the sun gear and carrier of the double pinion planetary gear set 30a, and a reverse brake 30c that fixes the ring gear. When the forward clutch 30b is engaged, the input rotation from the rotating shaft 44 is transmitted to the primary pulley 2 in the same rotational direction, and when the reverse brake 30c is engaged, the input rotation from the rotating shaft 44 is reversed and the rotation is transmitted to the primary pulley 2. transmitted to.

The forward clutch 30b is engaged by being supplied with clutch pressure from the hydraulic control valve unit when the forward traveling mode is selected as the traveling mode of the vehicle 100. The reverse brake 30c is engaged when brake pressure is supplied from the hydraulic control valve unit when the reverse travel mode is selected as the travel mode of the vehicle 100.

The rotation of the primary pulley 2 is transmitted to the secondary pulley 3 via the belt 4, and the rotation of the secondary pulley 3 is transmitted to the drive wheels 5 via the output shaft 8, gear set 9, and differential gear device 15.

In order to make it possible to change the gear ratio between the primary pulley 2 and the secondary pulley 3 during the above power transmission, one of the conical plates forming the V groove of the primary pulley 2 and the secondary pulley 3 is fixed to the conical plates 2a and 3a. The other is movable conical plates 2b and 3b which are movable in the axial direction.

These movable conical plates 2b, 3b are urged toward the fixed conical plates 2a, 3a by supplying primary pulley pressure and secondary pulley pressure from the hydraulic control valve unit, thereby frictionally engaging the belt 4 with the conical plates. In this way, power is transmitted between the primary pulley 2 and the secondary pulley 3.

During gear shifting, the width of the V-groove of both pulleys 2 and 3 is changed by the differential pressure between the primary pulley pressure and the secondary pulley pressure generated in accordance with the target gear ratio, and the belt 4 is wound around the pulleys 2 and 3. The target gear ratio is achieved by continuously changing the arc diameter.

Between the rotating electrical machine 40 and the forward/reverse switching mechanism 30, there is a pipe 53 serving as a supply member extending in an arc shape along the circumferential direction of the rotating electrical machine 40, and a pipe 53 that covers the rotating electrical machine 40 side of the forward/reverse switching mechanism 30. An intermediate cover 31 is provided that faces the rotating electric machine 40 in the axial direction via 53.

The pipe 53 is connected to an oil passage provided inside the intermediate cover 31, and allows the oil supplied through the intermediate cover 31 to be delivered to the stator of the rotating electrical machine 40 through a plurality of holes 53a formed on the rotating electrical machine 40 side. It is designed to eject toward the top of 43. By supplying oil in this manner, the rotating electric machine 40 can be efficiently cooled.

A sprocket 55 is rotatably supported by the intermediate cover 31 via a bush 54. The sprocket 55 is connected to the rotating shaft 44 of the rotating electric machine 40 via a connecting member 56, and the sprocket 55 is further connected to a sprocket 6b provided on the input shaft 6a of the oil pump 6 by a chain 57. . As a result, when the rotating electric machine 40 rotates, the oil pump 6 is driven and oil is supplied to the hydraulic control valve unit.

The bush 54 and sprocket 55 are provided at positions overlapping the pipe 53 in the radial direction. "Overlapping in the radial direction" means that they are arranged so that at least a portion thereof overlaps when viewed from the radial direction. Further, the chain 57 is arranged between one end and the other end of the arc-shaped pipe 53, that is, so as to pass through the notch of the pipe 53. Thereby, the size of the power transmission device 10 in the axial direction can be suppressed.

The vehicle 100 is configured as described above, and has two driving modes: an EV mode in which the rotating electrical machine 40 is driven by electric power supplied from the battery and running using only the driving force of the rotating electrical machine 40; The vehicle has an engine running mode in which the vehicle is driven, and an HEV mode in which the vehicle is driven by the driving force of the engine 1 and the rotating electric machine 40.

In the EV mode, the vehicle 100 travels with the clutch 48 released and either the forward clutch 30b or the reverse brake 30c engaged, driving only the rotating electric machine 40 with electric power from the battery.

In the engine running mode, the vehicle 100 drives only the engine 1 and runs with the clutch 48 and either the forward clutch 30b or the reverse brake 30c engaged.

In the HEV mode, the vehicle 100 drives the engine 1 and the rotating electric machine 40 and runs with the clutch 48 and either the forward clutch 30b or the reverse brake 30c engaged.

Next, the configuration of the rotating electrical machine 40 will be described in detail with reference to FIG. 2. FIG. 2 is a sectional view of the rotating electric machine 40.

As shown in FIG. 2, the stator case 41 includes a cylindrical portion 41a provided on the outer circumferential side, a cylindrical portion 41b provided on the inner circumferential side and protruding in the axial direction, and a cylindrical portion 41a in the radial direction. It has a cylindrical part 41d provided between the cylindrical parts 41b and protruding in the axial direction. A stator 43 is fixed to the inner periphery of the cylindrical portion 41a. The cylindrical portion 41b rotatably supports the rotating shaft 44 via the bearing 51. The cylindrical portion 41d is provided with a recess 41e as a catch portion. Details of the recess 41e will be described later.

On the surface of the stator case 41 facing the pipe 53, an elongated opening 41c is formed along the circumferential direction. As a result, oil ejected from the hole 53a of the pipe 53 passes through the opening 41c and is directly blown onto the stator coil 43a, as shown by the arrow. Note that the shape and number of the openings 41c can be set as appropriate.

The outer peripheral side of the cover 42 is fixed to the case 12 of the power transmission device 10. Further, the cover 42 has a cylindrical portion 42 a provided on the inner peripheral side and extending toward the inside of the stator case 41 .

A holder 58 in which the rotation sensor 47 is housed is fixed to the outer periphery of the cylindrical portion 42a. Further, the inner periphery of the cylindrical portion 42a supports the bearing 50 and rotatably supports the input shaft 11 via the bearing 50.

The holder 58 has an annular portion 58a that holds the rotation sensor 47 therein, a support portion 58b extending radially from the annular portion 58a, and a conversion portion 58c provided at the tip of the support portion 58b.

The electric wire 70 connected to the rotation sensor 47 has a film-like portion 70a and a cable 70b. The film-like portion 70a and the cable 70b are connected within the conversion section 58c.

The film-like portion 70a is provided on a flexible printed circuit board 70c fixed to the support portion 58b.

As shown in FIG. 2, the holder 58 is attached to the cover 42 by inserting the cylindrical portion 42a of the cover 42 into the annular portion 58a.

A ring 71 fixed to the groove is provided on the outer periphery of the cylindrical portion 42a on the distal side of the holder 58 so as to overlap the annular portion 58a in the axial direction. "Overlapping in the axial direction" means that they are arranged so that at least a portion thereof overlaps when viewed from the axial direction. Therefore, in the holder 58, movement of the cylindrical portion 42a toward the distal end side is restricted by the ring 71. This can prevent the holder 58 from falling off from the cylindrical portion 42a.

A seal member 59 is provided between the cylindrical portion 42a and the input shaft 11 to prevent oil from leaking to the outside.

A needle bearing 60 that receives a load in the axial direction and a needle bearing 61 that receives a load in the radial direction are provided between the input shaft 11 and the rotating shaft 44.

A clutch hub 62 is fixed by welding to the end of the input shaft 11 on the forward/reverse switching mechanism 30 side. The clutch hub 62 has a cylindrical portion 62a provided on the outer circumferential side and extending toward the engine 1 side. A plurality of drive plates 48a of the clutch 48 are attached to the outer periphery of the cylindrical portion 62a so as to be slidable in the axial direction by spline connection.

A rotor frame 81 is fixed to the outer periphery of the rotating shaft 44 by welding. The rotor frame 81 has a cylindrical portion 81a provided on the outer circumferential side. A core 82 is fixed to the outer periphery of the cylindrical portion 81a.

A plurality of driven plates 48b of the clutch 48 are attached to the inner periphery of the cylindrical portion 81a so as to be slidable in the axial direction by spline connection. In other words, the cylindrical portion 81a constitutes a clutch drum of the clutch 48. In other words, the clutch 48 is located on the inner peripheral side of the rotor 80. The retainer plate 63 is interposed between a driven plate 48b disposed at the end opposite to the piston arm 64 and a ring 65 fixed to a groove on the inner circumference of the cylindrical portion 81a. The retainer plate 63 is thicker in the axial direction than the driven plate 48b, and prevents the drive plate 48a and the driven plate 48b from falling down.

When fastening pressure is supplied from the hydraulic control valve unit to the piston oil chamber 66, the piston 67 moves toward the engine 1 while compressing the return spring 68. The clutch 48 is brought into the engaged state by the pressing force transmitted from the piston 67 via the needle bearing 69 and the piston arm 64.

The needle bearing 69 is supported by the piston arm 64 and is provided within the stator case 41 . The needle bearing 69 prevents the piston 67 from rotating as the piston arm 64 rotates.

Further, a holding member 49 that holds the magnet 52 is attached to the rotor frame 81. When the rotor 80 (rotor frame 81) rotates, the holding member 49 rotates together with it.

The holding member 49 includes a press-fit portion 49a provided on the outer circumference side, a cylindrical portion 49b provided on the inner circumference side and extending in the axial direction toward the forward/reverse switching mechanism 30 side, and the press-fit portion 49a and the cylindrical portion 49b. and a facing portion 49c for connecting. The holding member 49 is press-fitted and fixed to the outer peripheral side of the cylindrical part 81a by a press-fitting part 49a. Note that the holding member 49 may be configured to be fixed to the retainer plate 63 by press fitting or welding, for example.

The cylindrical portion 49b is located between the clutch hub 62 and the rotation sensor 47 held by the holder 58 in the radial direction, and the magnet 52 is attached to the inner periphery. That is, in this embodiment, the rotation sensor 47, the magnet 52, and the cylindrical portion 49b of the holding member 49 are arranged in the space inside the clutch hub 62. As shown in FIG. 2, the rotation sensor 47, the magnet 52, the cylindrical portion 49b of the holding member 49, the clutch 48, and the rotor 80 overlap in the radial direction.

The opposing part 49c is the base of the press-fitting part 49a and the cylindrical part 49b, and is a part that connects the press-fitting part 49a and the cylindrical part 49b. The opposing portion 49c faces the clutch 48 in the axial direction.

The magnet 52 is a member that covers the entire inner circumference of the cylindrical portion 49b, and as shown in FIG. 2, the longitudinal direction of the cross section extends in the axial direction. Therefore, the magnet 52 and the rotation sensor 47 face each other in the radial direction. The magnet 52 may be a single member formed in an annular shape along the inner periphery of the cylindrical portion 49b, or may be a plurality of magnets arranged in an annular shape along the inner periphery of the cylindrical portion 49b.

When the rotor 80 and the holding member 49 rotate, the magnet 52 rotates together with them. The rotation sensor 47 detects the rotation of the rotor 80, which rotates integrally with the magnet 52 and is a rotation detection target, by detecting the rotation of the magnet 52. Note that since the driven plate 48b, the retainer plate 63, the ring 65, etc. also rotate together with the magnet 52 and the rotor 80, it can be said that the rotation sensor 47 detects the rotation of these as well. In other words, the rotation sensor 47 is a sensor that detects the rotation of these rotating bodies. It can be said that the rotor 80, the holding member 49, the clutch 48, and the rotating electric machine 40 are also rotating bodies.

Incidentally, when the oil ejected from the hole 53a of the pipe 53 is directly blown onto the stator coil 43a of the rotating electric machine 40 to cool the stator coil 43a, it flows down toward the cylindrical portion 41d. Here, if the cylindrical part 41d does not have the recess 41e, most of the oil that has flowed down to the cylindrical part 41d flows down along the outer peripheral surface of the cylindrical part 41d in the direction of the rotating shaft 44, so that the needle bearing There is little oil flowing down in the direction of 69. Therefore, it is difficult to efficiently lubricate the needle bearing 69 using the oil flowing down from the rotating electric machine 40 side. In order to efficiently lubricate the needle bearing 69, a separate lubrication path such as an oil dam or a machined hole must be provided, but if these are provided, the structure becomes complicated.

Therefore, in this embodiment, in order to efficiently lubricate the needle bearing 69 with the oil flowing down from the rotating electric machine 40 side without providing a separate lubrication path as described above, a recess 41e is provided in the cylindrical portion 41d of the stator case 41. has been established.

Hereinafter, the recess 41e will be described in detail with reference to FIGS. 2 and 3. FIG. 3 is a diagram of the recess 41e viewed from the axial direction.

A recess 41e is provided on the outer peripheral side of the cylindrical portion 41d of the stator case 41. The recessed portion 41e can be said to be provided above the needle bearing 69 when the rotating electric machine 40 is viewed from the axial direction, and it can also be said that the recessed portion 41e is provided at the upper part (outer circumferential side) of the cylindrical portion 41d when viewed from the axial direction.

As shown in FIG. 3, the recessed portion 41e is a portion where the outer peripheral surface of the cylindrical portion 41d is recessed in an arc shape toward the radially inner peripheral side when viewed from the axial direction. Among the recesses 41e, an opening 41f that opens upward constitutes an inlet into which oil flowing down from the rotating electric machine 40 side is introduced.

As shown in FIG. 2, in this embodiment, the recess 41e reaches the end surface of the cylindrical portion 41d on the piston arm 64 side, thereby forming an opening 41g. The opening 41g constitutes an outlet through which the oil introduced from the opening 41f flows down toward the needle bearing 69 side. In this embodiment, it can be said that the opening 41g (exit) is formed near the top of the recess 41e.

As shown in FIG. 3, the horizontal width We of the opening 41g is narrower than the horizontal width Wi of the opening 41f. In other words, the oil is collected from the time it is introduced through the opening 41f until it flows down through the opening 41g. "Horizontal direction" means a direction perpendicular to the vertical direction, which is parallel to the direction of gravity. The longitudinal direction of the recess 41e as a catch part (direction of the widths We, Wi) is not limited as long as it is horizontal, but by making the longitudinal direction of the recess 41e perpendicular to the axial direction as in this embodiment, , the power transmission device 10 can be shortened in the axial direction.

As shown by the broken line arrow in FIG. 2, the oil flowing down from the stator coil 43a side of the rotating electrical machine 40 is introduced into the opening 41f of the recess 41e by providing the recess 41e in the cylindrical part 41d, and is introduced into the opening 41f of the recess 41e. It is concentrated while going from 41f to opening 41g, and flows down from opening 41g toward needle bearing 69. The oil that has flowed down contacts the needle bearing 69 and lubricates the needle bearing 69. In this manner, in this embodiment, the oil flowing down from the stator coil 43a side of the rotating electric machine 40 is collected by the recess 41e and is caused to flow down to the needle bearing 69 side, thereby efficiently lubricating the needle bearing 69. That is, the lubrication efficiency of the needle bearing 69 can be improved.

Further, in this embodiment, the recess 41e is not provided as a separate member, but is provided in the cylindrical portion 41d of the stator case 41, thereby making it a part of the stator case 41. As a result, the power transmission device 10 can be prevented from increasing in size, and the lubrication efficiency of the needle bearing 69 can be improved without increasing the number of components of the power transmission device 10.

Note that the shape of the recess 41e is not limited to the above, as long as it is a shape that widely captures oil on the inlet side and collects the oil and allows it to flow down on the outlet side. For example, the shape of the recess 41e may be a downwardly convex shape, in which case the vicinity of the top of the convex shape becomes the exit. Further, the shape of the recess 41e may be V-shaped, in which case the exit is near the bottom surface which is the top of the V-shape. Alternatively, a hole may be provided in the cylindrical portion 41d from the bottom surface of the recess 41e toward the needle bearing 69, and in that case, the opening of the hole becomes the outlet.

The configuration and effects of the present embodiment described above will be collectively described.

The power transmission device 10 as a device of this embodiment supplies oil to a rotating electrical machine 40, a needle bearing 69 provided in the housing (stator case 41 and cover 42) of the rotating electrical machine 40, and an upper part of the rotating electrical machine 40. A recess 41e is provided above the needle bearing 69 when viewed from the axial direction, and the recess 41e has an opening 41f that introduces oil flowing down from the rotating electric machine 40 side, and The opening 41g allows the introduced oil to flow down to the needle bearing 69 side, and the horizontal width We of the opening 41g is narrower than the horizontal width Wi of the opening 41f.

According to this configuration, the needle bearing 69 can be efficiently lubricated by collecting the oil flowing down from the rotating electrical machine 40 side by the recess 41e and letting it flow down to the needle bearing 69 side. That is, the lubrication efficiency of the needle bearing 69 can be improved (an effect corresponding to claim 1).

Furthermore, the stator case 41 further includes a cylindrical portion 41d that protrudes in the axial direction, and a recess 41e serving as a catch portion is provided at the top of the cylindrical portion 41d.

According to this configuration, it is possible to suppress the increase in size of the power transmission device 10, and it is also possible to improve the lubrication efficiency of the needle bearing 69 without increasing the number of components of the power transmission device 10 (effect corresponding to claim 2). ).

The power transmission device 10 further includes a case 12 that accommodates the housing (stator case 41 and cover 42) of the rotating electric machine 40, and the housing (stator case 41 and cover 42) is fixed to the case 12.

According to this configuration, since the rotating electric machine 40 can be attached to the case 12 of the power transmission device 10 in units, the assemblability of the power transmission device 10 is improved (an effect corresponding to claim 3).

Although the embodiments of the present invention have been described above, the above embodiments are merely examples of application of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiments. isn't it.

For example, in the above embodiment, the case where the device is the power transmission device 10 has been described. However, the device may also be a device equipped with a rotating electrical machine.

Furthermore, in the above embodiment, the case where the power transmission device 10 is a transmission has been described. However, the power transmission device 10 may be a reduction gear, a transmission with a motor, a reduction gear with a motor, or the like.

Moreover, as shown in FIG. 4 as a modification, a catch member 241e, which is an independent member as a catch part, may be provided in the cylindrical part 41d.

The catch member 241e is provided, for example, in a space surrounded by the cylindrical portion 41d, the piston arm 64, and the rotor frame 81 (not shown). As shown in FIG. 4, the catch member 241e has an opening 241f as an inlet that opens toward the stator coil 43a side of the rotating electrical machine 40, and an outlet that allows the oil introduced from the opening 241f to flow down toward the needle bearing 69 side. It has an opening 241g. The shape of the catch member 241e is such that it widely captures oil on the opening 241f side and collects the oil on the opening 241g side to flow down, and the horizontal width We2 of the opening 241g is equal to the horizontal width of the opening 241f. It is sufficient if it is narrower than the width Wi2 in the direction.

When the catch member 241e is provided, the range of the opening 241f into which oil is introduced can be expanded more than when the recess 41e is provided in the cylindrical portion 41d. That is, more oil flowing down from the rotary electric machine 40 side can be collected at the opening 241f and flowed down from the opening 241g to the needle bearing 69 side than when the recess 41e is provided in the cylindrical portion 41d. In other words, the lubrication efficiency of the needle bearing 69 can be further improved (an effect corresponding to claim 1).

Furthermore, in addition to the configuration in which the cylindrical part 41d is provided with the recess 41e, a catch part (recess or catch member) may be provided in the cylindrical part 41b so that oil flows down to the bearing 51 side. According to this configuration, the bearing 51 as well as the needle bearing 69 can be lubricated using the oil that has cooled the rotating electrical machine 40 .

Furthermore, in the above embodiment, the pipe 53 is provided between the rotating electrical machine 40 and the forward/reverse switching mechanism 30, and oil is spouted from the forward/reverse switching mechanism 30 side toward the upper part of the stator 43 of the rotating electrical machine 40. explained. However, the present invention can also be applied when the supply member is provided on the cover side of the housing. In this case, by providing the catch portion on the cover, it is possible to efficiently lubricate the bearing provided on the cover side within the housing.

10 Power transmission device (device)
12 Case 40 Rotating electric machine 41 Stator case (housing)
42 Cover (housing)
41d Cylindrical part 41e Recessed part (catch part)
41f opening (entrance)
41g opening (exit)
53 Pipe (supply member)
69 Needle bearing (bearing)
241e Catch member (catch part)
241f opening (entrance)
241g opening (exit)

Claims (2)

rotating electric machine,
a bearing provided in the housing of the rotating electrical machine;
a supply member that supplies oil to the upper part of the rotating electric machine,
A catch portion is provided above the bearing when viewed from the axial direction,
The catch portion has an inlet that introduces oil flowing down from the rotating electric machine side, and an outlet that allows the oil introduced from the inlet to flow down to the bearing side,
the horizontal width of the outlet is narrower than the horizontal width of the inlet;
The housing includes a cylindrical part that protrudes in the axial direction, and the catch part, which is a recessed part provided in an upper part of the cylindrical part toward the inner peripheral side in the radial direction with respect to the outer peripheral surface of the cylindrical part. ,
The recess extends axially along the cylindrical portion to the end surface.
A device characterized by: 2. The device according to claim 1 ,
comprising a case accommodating the housing,
the housing is fixed to the case;
A device characterized by:

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