JP7147343B2 - vehicle power transmission - Google Patents

Description

The present invention relates to a vehicle power transmission device.

In a transmission mounted on a vehicle such as an automobile, there is known a transmission that detects the rotation of the rotating shaft by providing a sensor ring integrally with the rotating shaft and detecting the rotation of the sensor ring with the sensor (Patent document 1).

In the transmission disclosed in Patent Document 1, a transmission output section is rotatably supported by a bearing support section of a transmission case via a bearing. A sensor ring is attached to the transmission output and is spaced apart from the bearing support in the axial direction of the transmission output.

Japanese Patent No. 6308060

In such a conventional transmission, since the sensor ring is installed apart from the bearing support portion in the axial direction of the transmission output portion, the thickness of the bearing support portion with respect to the transmission output portion and the sensor ring The transmission output part becomes longer in the axial direction by the thickness. Therefore, there is a possibility that the size of the transmission will increase, and there is room for improvement.

The present invention has been devised in view of the above-mentioned circumstances, and can prevent the shaft length from becoming longer, attach a sensor ring to the rotating shaft, and prevent an increase in the size of the rotating shaft. An object of the present invention is to provide a power transmission device for a vehicle.

The present invention provides a rotary shaft to which power of an internal combustion engine is transmitted, a power transmission case that houses the rotary shaft, and a bearing support provided in the power transmission case that rotatably supports the rotary shaft via a bearing. and a sensor ring attached to the rotating shaft so as to rotate integrally with the rotating shaft, and detecting the number of revolutions of the rotating shaft by detecting the sensor ring with a sensor. The sensor ring includes an annular portion extending radially outward from the rotating shaft, and a radially outer end portion of the annular portion communicating with the outer end portion of the annular portion to the rotating shaft. a cylindrical portion extending in the axial direction and having a plurality of tooth flanks formed at regular intervals in the circumferential direction; and the annular portion is in contact with the bearing in the axial direction of the rotating shaft .

As described above, according to the present invention, the sensor ring can be attached to the rotating shaft while preventing the length of the rotating shaft from becoming long, thereby preventing an increase in the size of the vehicle power transmission device.

FIG. 1 is a left side view of a vehicle power transmission system according to one embodiment of the present invention. FIG. 2 is a plan view of a vehicle power transmission device according to an embodiment of the present invention. 3 is a cross-sectional view taken along the line III--III in FIG. 2. FIG. FIG. 4 is a sectional view taken along the IV-IV direction in FIG. FIG. 5 is a front view of the sensor ring of the vehicle power transmission system according to one embodiment of the present invention. FIG. 6 is a left side view of the sensor ring of the vehicle power transmission system according to one embodiment of the present invention.

A vehicle power transmission device according to an embodiment of the present invention includes a rotating shaft to which power of an internal combustion engine is transmitted, a power transmission case that accommodates the rotating shaft, and a power transmission case provided in the power transmission case, which rotates via a bearing. Equipped with a bearing support for rotatably supporting the shaft, and a sensor ring attached to the rotating shaft so as to rotate integrally with the rotating shaft, and detecting the rotation speed of the rotating shaft by detecting the sensor ring with a sensor. In the vehicle power transmission device, the sensor ring is installed on the rotating shaft so that a part of the sensor ring overlaps the bearing in the axial direction of the rotating shaft.
As a result, the sensor ring can be attached to the rotating shaft while preventing the length of the rotating shaft from becoming long, and the vehicle power transmission device can be prevented from increasing in size.

DETAILED DESCRIPTION OF THE INVENTION A vehicle power transmission system according to an embodiment of the present invention will be described below with reference to the drawings.
1 to 6 are diagrams showing a vehicle power transmission system according to one embodiment of the present invention. In FIGS. 1 to 6, the vertical, front, rear, left, and right directions are based on the vehicle power transmission device installed in the vehicle, the left and right direction is the direction perpendicular to the front-rear direction, and the height direction of the vehicle power transmission device. is the vertical direction.

First, the configuration will be explained.
1 and 2, a vehicle 1 is equipped with a vehicle power transmission device (hereinafter simply referred to as a power transmission device) 2. The power transmission device 2 is mounted on the floor of the vehicle 1 while being connected to an engine 3. It is installed vertically under the panel 1A.

The power transmission device 2 includes a power transmission case 4, which includes a torque converter housing (hereinafter simply referred to as a torque converter housing) 5, a front case 6, a transfer front case 7, and a transfer rear case 8. and a transfer shift case 9.

In the power transmission case 4, the torque converter housing 5, the front case 6 and the transfer front case 7 constitute a transmission case, and the transfer rear case 8 and the transfer shift case 9 constitute a transfer case.

An engine 3 as an internal combustion engine is connected to the front end portion of the torque converter housing 5 by bolts (not shown). The engine 3 burns fuel and converts thermal energy into mechanical energy.

The torque converter housing 5 is connected to the front case 6 . A torque converter (not shown) is housed inside the torque converter housing 5 . The torque converter constitutes a fluid coupling that transmits power via oil between the engine 3 and the input shaft 11 (see FIG. 3).

A clutch (not shown) is accommodated in the front case 6, and the clutch transmits power from the engine 3 to the input shaft 11 and cuts off the transmission of power.

A transfer front case 7 is connected to the front case 6, and an input shaft 11 is housed in the front case 6 and the transfer front case 7 (see FIG. 3). The transfer front case 7 is connected to the transfer rear case 8 . A counter shaft 12 is installed in the transfer front case 7 and the transfer rear case 8 below the input shaft 11 (see FIG. 3).

The input shaft 11 is provided with a plurality of input gears (not shown). A plurality of counter gears (not shown) are provided on the counter shaft 12, and the input gears forming the same gear are in mesh with the counter gears having the same gear.

A transfer shift case 9 is connected to the upper portion of the transfer rear case 8 . In FIG. 3, the output shaft 13 is accommodated in the transfer rear case 8. As shown in FIG. The output shaft 13 of this embodiment constitutes the rotating shaft and the first rotating shaft of the present invention, and the counter shaft 12 constitutes the second rotating shaft of the present invention.

The rear end of the input shaft 11 is connected to the front end of the output shaft 13 via a needle bearing 10A so as to be relatively rotatable.

A partition wall 16 is provided in the transfer front case 7. The partition wall 16 divides the space inside the power transmission case 4 into a gear chamber 20A, which is a space on the transfer front case 7 side, and a transfer chamber 20A, which is a space on the transfer rear case 8 side. It is separated from the room 20B.

A bearing support portion 16A is provided in the partition wall 16, and the bearing support portion 16A supports the front end portion of the output shaft 13 via a bearing 17 so as to be rotatable. The partition wall 16 extends outward in the radial direction of the output shaft 13 from the bearing support portion 16</b>A, and the outer end in the extending direction is connected to the inner peripheral portion of the transfer front case 7 .

A rear wall 18 is provided in the transfer rear case 8 , and the rear wall 18 closes the transfer chamber 20 B on the transfer front case 7 side together with the partition wall 16 . The rear wall 18 is provided with a hollow portion 45 protruding from the rear wall 18 toward the transfer shift case 9 . The rear wall 18 of this embodiment constitutes the vertical wall of the invention.

The transfer shift case 9 is connected to the hollow portion 45, and inside the hollow portion 45 and the transfer shift case 9, a transfer gear shift chamber 20C is formed.
An opening 18a is formed in the upper portion of the rear wall 18, and the transfer chamber 20B communicates with the transfer gear shift chamber 20C through the opening 18a.

A bearing support portion 18A is provided on the rear wall 18, and the bearing support portion 18A supports the axial center portion of the output shaft 13 via a bearing 19 so as to be rotatable. The rear wall 18 extends outward in the radial direction of the output shaft 13 from the bearing support portion 18A, and the outer end in the extending direction is connected to the inner peripheral portion of the transfer rear case 8. As shown in FIG.

The bearing support portion 18A protrudes from the rear wall 18 toward the partition wall 16 toward the input shaft 11 side. The bearing 19 includes an inner race 19A fitted to the outer peripheral portion of the output shaft 13, an outer race 19B fitted to the inner peripheral portion of the bearing support portion 18A, and the inner race 19A and the outer race 19B connected relatively rotatably. and a ball portion 19C.

A sliding yoke 31 is spline-fitted to the output shaft 13 , and the sliding yoke 31 is integrally rotatable with the output shaft 13 and movable in the axial direction of the output shaft 13 .

A rear propeller shaft 41 is connected to the sliding yoke 31 . The rear propeller shaft 41 is connected to a rear differential device (not shown), and the rear differential device is connected to left and right rear wheels (not shown) via left and right drive shafts (not shown).

When the rear propeller shaft 41 moves back and forth, the sliding yoke 31 moves back and forth along the axial direction of the output shaft 13, thereby allowing the rear propeller shaft 41 to move back and forth.

The rear wall 18 is provided with a cylindrical sliding yoke support portion 18H. The sliding yoke support portion 18H extends from the rear wall 18 toward the sliding yoke 31 and covers a portion of the output shaft 13 and a portion of the sliding yoke 31. As shown in FIG.

A metal bush 39 is provided between the sliding yoke 31 and the sliding yoke support portion 18H. The metal bush 39 supports the sliding yoke 31 when the sliding yoke 31 rotates together with the output shaft 13 and moves in the axial direction of the output shaft 13 .

A dust case 36 is installed in the transfer rear case 8 . The dust case 36 is attached to the sliding yoke 31 so as to cover the sliding yoke 31 and the sliding yoke support portion 18H.
As a result, dust and the like can be prevented from entering the inside of the power transmission case 4 through the space between the sliding yoke support portion 18H and the sliding yoke 31 from the outside.

An oil seal 43 is provided between the sliding yoke 31 and the inner peripheral portion of the rear end of the sliding yoke support portion 18H. The oil seal 43 prevents oil flowing between the sliding yoke support portion 18H and the sliding yoke 31 and oil flowing between the sliding yoke support portion 18H and the metal bush 39 from leaking to the outside.

A final drive gear 21 is provided on the counter shaft 12 , and the final drive gear 21 rotates integrally with the counter shaft 12 . A final driven gear 22 is provided on the front side of the output shaft 13 , and the final driven gear 22 rotates integrally with the output shaft 13 .

When power is transmitted from the input shaft 11 to the counter shaft 12 via the input gear and the counter gear that establish a predetermined gear, the power is transmitted from the final drive gear 21 to the final driven gear 22 .

Behind the final driven gear 22, a sprocket 24 is rotatably connected to the output shaft 13 via a needle bearing 10B. A chain 25 is wound around the sprocket 24 . The chain 25 is wound around a sprocket (not shown) of the front propeller shaft 40 (see FIG. 2).

The front propeller shaft 40 is connected to a front differential device (not shown), and the front differential device is connected to left and right front wheels (not shown) via left and right drive shafts (not shown).

A hub 26 is spline-fitted to the output shaft 13 behind the sprocket 24 , and the hub 26 rotates integrally with the output shaft 13 . The hub 26 of this embodiment constitutes the rotating body of the present invention.

An annular hub sleeve 27 is spline-fitted to the outer periphery of the hub 26 . The hub sleeve 27 rotates integrally with the hub 26 and is movable relative to the hub 26 in the axial direction of the output shaft 13 . It's becoming

A shift fork 28 is fitted to the hub sleeve 27 . A shift fork 28 is attached to a shifter shaft 29 . One end of the shifter shaft 29 fits into a fitting groove 16B provided in the upper portion of the partition wall 16, extends from one end into the transfer gear shift chamber 20C through an opening 18a, and extends into a fitting groove 9A provided in the transfer shift case 9. is mated to

The shifter shaft 29 is urged toward the rear transfer shift case 9 by a coil spring 30 and is moved in the axial direction of the output shaft 13 by a drive motor (not shown). The driving motor is stopped when the operating lever for switching between two-wheel drive and four-wheel drive is operated to switch the operating lever to the two-wheel drive side. When the motor is stopped, the biasing force of the coil spring 30 causes the shifter shaft 29 to move rearward, and the shift fork 28 causes the hub sleeve 27 to move rearward.

At this time, since the hub sleeve 27 does not connect the hub 26 and the sprocket 24, power is transmitted from the output shaft 13 only to the rear propeller shaft, and the vehicle 1 is driven by the rear wheels.
A synchronizer ring 32 is interposed between the hub 26 and the sprocket 24 in the axial direction of the output shaft 13 .

The synchronizer ring 32 synchronizes the rotation of the sprocket 24 with the rotation of the hub sleeve 27 when the hub sleeve 27 moves from the rear to the sprocket 24 side.

The drive motor moves the shifter shaft 29 forward when the operation lever for switching between two wheels and four wheels is operated and the operation lever is switched to the four-wheel drive side. When the shifter shaft 29 moves forward, the shift fork 28 moves the hub sleeve 27 forward.

At this time, since the hub sleeve 27 is connected to the sprocket 24 , power is transmitted from the output shaft 13 to the rear propeller shaft 41 , and from the output shaft 13 via the hub 26 , hub sleeve 27 , sprocket 24 and chain 25 . Power is transmitted to the front propeller shaft 40, and the vehicle 1 is driven by the front and rear wheels.

A sensor ring 33 is attached to the output shaft 13 , and the sensor ring 33 rotates together with the output shaft 13 .

5 and 6, the sensor ring 33 has an annular portion 33A and a tubular portion 33B. In FIG. 3, the annular portion 33A extends radially outward from the output shaft 13. As shown in FIG. The tubular portion 33B is connected to the radial outer end portion of the annular portion 33A and extends in the axial direction of the output shaft 13 from the outer end portion of the annular portion 33A toward the rear wall 18 .

5 and 6, a plurality of tooth flanks 33b are formed on the tubular portion 33B, and the tooth flanks 33b are formed at regular intervals in the circumferential direction of the tubular portion 33B. In FIG. 2, a rotational speed sensor 34 is provided on the side surface of the transfer rear case 8. As shown in FIG.

The rotation speed sensor 34 has a detection element (not shown). The detection element detects the interval of the tooth flanks 33b and outputs a pulse signal corresponding to the tooth flanks 33b to a controller (not shown), thereby detecting the number of revolutions of the output shaft 13. FIG.

Specifically, the control unit detects the rotation speed of the output shaft 13 by referring to the pulse signal input from the rotation speed sensor 34 and calculating the number of pulses per unit time. The rotational speed sensor 34 of this embodiment constitutes the sensor of the present invention.

3, the cylindrical portion 33B of the sensor ring 33 is installed on the output shaft 13 so as to overlap the bearing 19 and the bearing support portion 18A in the axial direction of the output shaft 13. As shown in FIG.

In the axial direction of the output shaft 13 , the radially inner end of the annular portion 33</b>A contacts the inner race 19</b>A of the bearing 19 and the hub 26 . The annular portion 33A is sandwiched between the inner race 19A and the hub 26 in the axial direction of the output shaft 13, and is held by the inner race 19A and the hub 26 while being positioned between the inner race 19A and the hub 26 in the axial direction of the output shaft 13. It is

In FIG. 5, a through hole 33a is formed in the annular portion 33A, and a projection (not shown) provided on the hub 26 is fitted into the through hole 33a. As a result, the sensor ring 33 rotates integrally with the hub 26 without being displaced from the hub 26 in the rotational direction.

3, the cylindrical portion 33B and the hub sleeve 27 are installed at the same height position in the height direction of the power transmission device 2. As shown in FIG. In other words, the cylindrical portion 33B and the hub sleeve 27 are installed at the same position in the radial direction of the output shaft 13 .

As a result, when the hub sleeve 27 moves excessively rearward, it is possible to prevent the hub sleeve 27 from falling off from the hub 26 by colliding with the cylindrical portion 33B.

The bearing support portion 18A of the rear wall 18 extends from the rear wall 18 toward the partition wall 16 so as to be positioned between the tubular portion 33B of the sensor ring 33 and the bearing 19 in the axial direction of the output shaft 13. It protrudes in the axial direction.

Oil O is stored in the bottom of the power transmission case 4, that is, the bottoms of the front case 6, the transfer front case 7 and the transfer rear case 8 (only the bottoms of the transfer front case 7 and the transfer rear case 8 are shown in FIG. 3). ing.

The oil level of the oil O in FIGS. 3 and 4 indicates the height of the oil level when the output shaft 13 is not rotating, and the oil is sucked by an oil pump (not shown) when the output shaft 13 is rotating. so the oil level drops.

An oil introduction groove 18C is provided in the lower portion of the rear wall 18, and the lower end of the oil passage 18D opens into the oil introduction groove 18C. A mesh-like oil strainer 35 is provided in the opening 18c of the oil introduction groove 18C.

In FIG. 4, the oil strainer 35 is installed directly below the bearing support portion 18A. In other words, the oil introduction groove 18C is provided directly below the bearing support portion 18A.

An oil pump (not shown) is installed on the rear wall 18 and driven by the counter shaft 12 . When the oil pump is driven, the oil O stored in the bottom of the transfer case 8 is filtered by the oil strainer 35 and then introduced into the oil introduction groove 18C. Oil flows are indicated by oils O1 and O2 in FIG.

Next, the oil O1 introduced into the oil introduction groove 18C is supplied to the bearing 19 after being introduced between the sliding yoke 31 and the sliding yoke support portion 18H through the oil passage 18D (see O2). Thereby, the bearing 19 is lubricated and cooled by the oil O2.

The sensor ring 33 is installed such that the cylindrical portion 33B overlaps the bearing 19 and the bearing support portion 18A in the axial direction of the output shaft 13. As shown in FIG. The tubular portion 33B protrudes from the annular portion 33A toward the rear wall 18 so as to cover the bearing support portion 18A.

Thereby, a space 37 for guiding the oil O2 is formed between the annular portion 33A and the tubular portion 33B, and the bearing 19 and the bearing support portion 18A. Therefore, the oil O2 flowing from the bearing 19 can be guided to the oil strainer 35 through the rear wall 18 .

In FIG. 4, the rear wall 18 is provided with a bearing support portion 18E, and the bearing support portion 18E is installed below the bearing support portion 18A. A rear end portion of the counter shaft 12 is rotatably supported by a bearing support portion 18E via a bearing 38. As shown in FIG.

An oil introduction groove 18 e is formed on the upper side of the bearing support portion 18 E, and oil introduced into the bearing support portion 18 E from the oil introduction groove 18 e is supplied to the bearing 38 .

As described above, the power transmission device 2 of the present embodiment includes the output shaft 13 to which the power of the engine 3 is transmitted, the power transmission case 4 that accommodates the output shaft 13, and the power transmission case 4 provided with the power transmission case 4. A bearing support portion 18A that rotatably supports the output shaft 13 and a sensor ring 33 attached to the output shaft 13 so as to rotate together with the output shaft 13 are provided.

In addition to this, the sensor ring 33 is installed on the output shaft 13 so that the cylindrical portion 33B overlaps the bearing 19 in the axial direction of the output shaft 13 .
As a result, the output shaft 13 does not need to have an axial length corresponding to the thickness of the sensor ring 33 . Therefore, the sensor ring 33 can be attached to the output shaft 13 while preventing the shaft length of the output shaft 13 from becoming long, and as a result, the power transmission device 2 can be prevented from becoming large.

Further, according to the power transmission device 2 of the present embodiment, the sensor ring 33 includes the annular portion 33A extending radially outward from the output shaft 13 and the annular portion 33A connected to the radially outer end portion of the annular portion 33A. A cylindrical portion 33B extends from the outer end portion of 33A in the axial direction of the output shaft 13 and has a plurality of tooth surfaces 33b formed at regular intervals in the circumferential direction.

In addition, the cylindrical portion 33B overlaps the bearing support portion 18A in the axial direction of the output shaft 13. As shown in FIG.

As a result, the cylindrical portion 33B having a long axial length and having the tooth surface 33b can be overlapped with the bearing 19 in the axial direction of the output shaft 13. can be set to

Therefore, the sensor ring 33 can be attached to the output shaft 13 while effectively preventing the shaft length of the output shaft 13 from becoming longer, and the power transmission device 2 can be more effectively prevented from increasing in size. .

Further, according to the power transmission device 2 of the present embodiment, since the annular portion 33A is in contact with the inner race 19A of the bearing 19 in the axial direction of the output shaft 13, the sensor ring 33 can be installed close to the bearing 19. In addition, the cylindrical portion 33B can be easily overlapped with the bearing 19 in the axial direction of the output shaft 13 .

Therefore, the sensor ring 33 can be attached to the output shaft 13 while effectively preventing the shaft length of the output shaft 13 from becoming longer, and the power transmission device 2 can be more effectively prevented from increasing in size. .

Further, according to the power transmission device 2 of the present embodiment, the hub 26 that rotates integrally with the output shaft 13 is provided on the output shaft 13, and the annular portion 33A extends from the hub 26 in the axial direction of the output shaft 13. and the bearing 19.

This eliminates the gap between the hub 26 and the sensor ring 33 and the gap between the sensor ring 33 and the bearing 19 in the axial direction of the output shaft 13 . Therefore, the sensor ring 33 can be attached to the output shaft 13 while effectively preventing the shaft length of the output shaft 13 from becoming longer, and the power transmission device 2 can be more effectively prevented from increasing in size. .

Further, according to the power transmission device 2 of this embodiment, the transfer rear case 8 of the power transmission case 4 has the rear wall 18 extending outward in the radial direction of the output shaft 13 from the bearing support portion 18A.

The bearing support portion 18A protrudes in the axial direction of the output shaft 13 from the rear wall 18 toward the partition wall 16 so as to be positioned between the tubular portion 33B and the bearing 19 . Further, an oil strainer 35 is installed on the rear wall 18 so as to be positioned directly below the bearing support portion 18A.

In addition to this, the sensor ring 33 is installed so that the cylindrical portion 33B, the bearing 19 and the bearing support portion 18A overlap in the axial direction of the output shaft 13, and the cylindrical portion 33B covers the bearing support portion 18A. By protruding from the annular portion 33</b>A toward the rear wall 18 , the oil O 2 flowing from the bearing 19 can be guided to the oil strainer 35 through the rear wall 18 .

As a result, the sensor ring 33 can be used to guide the oil to the oil strainer 35, and a new member to guide the oil to the oil strainer 35 can be eliminated. Therefore, more oil can be returned to the vicinity of the oil strainer 35, and more oil can be introduced into the oil introduction groove 18C through the oil strainer 35. Therefore, the lubricating performance and cooling performance of the bearing 19 can be improved.

In addition, since the oil O2 flowing from the bearing 19 is guided to the oil strainer 35 along the rear wall 18, the oil O2 collides with the counter shaft 12 and is stirred with the air, so that the air is mixed with the oil. can be prevented.

Further, according to the power transmission device 2 of this embodiment, the counter shaft 12 is installed below the output shaft 13 . The rear wall 18 has a bearing support portion 18E that rotatably supports the counter shaft 12 via a bearing 38 below the bearing support portion 18A, and an oil introduction groove 18e is formed above the bearing support portion 18E. there is

As a result, the oil O3 (see FIG. 4) flowing from the bearing 19 can be transmitted through the rear wall 18 and actively introduced into the oil introduction groove 18e. Therefore, a large amount of oil can be supplied to the bearing 38, and the lubricating performance and cooling performance of the bearing 38 can be improved.

In the power transmission device 2 of this embodiment, the sensor ring 33 is sandwiched between the sprocket 24 and the bearing 19 for switching between two-wheel drive and four-wheel drive. It is not limited to the sprocket 24 for drive switching.

Although embodiments of the present invention have been disclosed, it will be apparent that modifications may be made by those skilled in the art without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims.

2... power transmission device (vehicle power transmission device), 3... engine (internal combustion engine), 4... power transmission case, 12... counter shaft (second rotary shaft), 13.. Output shaft (rotating shaft, first rotating shaft), 18... rear wall (vertical wall), 18A... bearing support, 18e... oil introduction groove, 19... bearing, 26.. Hub (rotating body), 33...Sensor ring, 33A...Annular part, 33B...Cylindrical part, 33b...Tooth surface, 34...Revolution sensor (sensor), 35.. .Oil strainer

Claims (4)

a rotating shaft to which the power of the internal combustion engine is transmitted;
a power transmission case that houses the rotating shaft;
a bearing support provided in the power transmission case for rotatably supporting the rotating shaft via a bearing;
a sensor ring attached to the rotating shaft so as to rotate integrally with the rotating shaft;
A vehicular power transmission device that detects the rotation speed of the rotating shaft by detecting the sensor ring with a sensor,
The sensor ring has an annular portion extending radially outward from the rotating shaft, and is connected to a radially outer end portion of the annular portion and extends from the outer end portion of the annular portion in an axial direction of the rotating shaft, a cylindrical portion having a plurality of tooth flanks formed at regular intervals in the circumferential direction,
The sensor ring is installed on the rotating shaft so that the cylindrical portion overlaps with the bearing in the axial direction of the rotating shaft, and the annular portion is in contact with the bearing in the axial direction of the rotating shaft. A power transmission device for a vehicle, characterized in that A rotating body that rotates integrally with the rotating shaft is provided on the rotating shaft,
2. The vehicle power transmission device according to claim 1 , wherein the annular portion is sandwiched between the rotating body and the bearing in the axial direction of the rotating shaft . The power transmission case has a vertical wall extending outward in a radial direction of the rotating shaft from the bearing support,
The bearing support portion protrudes from the vertical wall in the axial direction of the rotating shaft so as to be positioned between the tubular portion and the bearing,
An oil strainer is installed on the vertical wall so as to be positioned directly below the bearing support,
The sensor ring is installed so that the tubular portion, the bearing, and the bearing support portion overlap in the axial direction of the rotating shaft,
The cylindrical portion protrudes from the annular portion toward the vertical wall so as to cover the bearing support portion, thereby guiding oil flowing from the bearing to the oil strainer along the vertical wall. 3. The vehicle power transmission device according to claim 1 or 2, characterized in that it is capable of . When the rotating shaft is the first rotating shaft, a second rotating shaft is installed below the first rotating shaft,
When the bearing support portion is used as the first bearing support portion, the vertical wall is positioned below the first bearing support portion to support the second rotating shaft rotatably via a bearing. having a bearing support of
4. The vehicle power transmission device according to claim 3, wherein an oil introduction groove is formed on the upper side of the second bearing support portion .

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