JP2021095949A - Clutch device - Google Patents

Abstract

To provide a clutch device for enabling uniform flow rate distribution in the rotary shaft direction of lubricating oil.SOLUTION: The clutch device includes an outer periphery drum rotatable integrally with a first shaft, an inner periphery drum having a cylindrical trunk arranged radial inside of the outer periphery drum and a bottom arranged on one end side in the axial direction of the trunk and rotatable integrally with a second shaft arranged coaxially with the first shaft, a clutch mechanism arranged in a space between the outer periphery drum and the trunk for intermittently obtaining torque between the outer periphery drum and the inner periphery drum, a first oil path for passing lubricating oil to be supplied to the second shaft side to the bottom side, a plurality of second oil paths arranged in the peripheral direction of the trunk for passing the lubricating oil passed to the bottom side from one end side in the axial direction to the other end side, and a plurality of communication parts arranged in the plurality of second oil paths at positions different from one another in the axial direction, respectively, for communicating between the second oil paths and the space.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a clutch device.

As a conventional clutch device, for example, Patent Document 1 includes a plurality of outer plates fixed to the outer drum so as to rotate integrally, and a plurality of inner disks fixed to the inner hub so as to rotate integrally. A wet multi-plate clutch device in which a plurality of outer plates and a plurality of inner discs are alternately arranged in the direction of the rotation axis, and a frictional force is generated by pressing in the direction of the rotation axis to integrally rotate the outer drum and the inner hub. Is disclosed.

In the wet multi-plate clutch device as described above, the lubricating oil (cooling oil) is scattered from the rotating shaft side to the surroundings by centrifugal force. The scattered lubricating oil adheres to the inner hub. The adhered lubricating oil passes through a large number of through holes formed in the inner hub and is supplied between the outer plate and the inner disc.

JP-A-2017-166655

By the way, the lubricating oil is scattered from a predetermined location (for example, the wall surface of the inner hub) to the surroundings by centrifugal force through a gap such as a bearing from the rotating shaft.

Therefore, the scattered lubricating oil does not evenly adhere to the inner hub in the direction of the rotation axis. As a result, there is a problem that the flow rate distribution of the lubricating oil supplied between the outer plate and the inner disc in the rotation axis direction is not uniform.

An object of the present disclosure is to provide a clutch device capable of equalizing the flow rate distribution of the lubricating oil in the rotation axis direction.

In order to achieve the above object, the clutch device in the present disclosure is
An outer drum that can rotate integrally with the first shaft,
It has a tubular body portion arranged radially inside the outer peripheral drum and a bottom portion arranged on one end side in the axial direction of the body portion, and is arranged coaxially with the first axis. An inner drum that can rotate integrally with the second axis,
A clutch mechanism that is arranged in the space between the outer peripheral drum and the body portion and interrupts torque between the outer peripheral drum and the inner peripheral drum.
A first oil passage through which the lubricating oil supplied to the second shaft side is passed to the bottom side, and
A plurality of second oil passages arranged in the circumferential direction of the body portion and passing the lubricating oil passed to the bottom side from one end side to the other end side in the axial direction.
A plurality of communication portions for communicating the second oil passage and the space, in which positions arranged in each of the plurality of second oil passages are different from each other in the axial direction.
To be equipped.

According to the present disclosure, the flow rate distribution of the lubricating oil in the rotation axis direction can be made uniform.

FIG. 1 is a partial cross-sectional view schematically showing a part of the clutch device according to the embodiment of the present disclosure. FIG. 2 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a developed view showing the body of the inner drum in a straight line.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. FIG. 1 is a partial cross-sectional view schematically showing a part of the clutch device according to the embodiment of the present disclosure. In FIG. 1, the X-axis and the Y-axis are drawn. In FIG. 1, the left-right direction is referred to as the X direction or the axial direction, the left direction is referred to as the front side or the "+ X direction", the right direction is referred to as the rear side or the "-X direction", and the vertical direction is referred to as the Y direction or the radial direction. The direction away from the X-axis in the radial direction is referred to as the radial outer side or "+ Y direction", and the direction approaching the X-axis from the radial direction is referred to as the radial inner side or "-Y direction".

The clutch device 100 according to the above embodiment is, for example, a device that transmits or blocks rotation between the clutch input shaft 1 and the transmission input shaft 2 arranged on the same shaft.

As shown in FIG. 1, the clutch device 100 is a wet multi-plate clutch, and includes a case 10, an outer peripheral drum 20, an inner peripheral drum 30, and a plurality of outer clutch plates 40 (also referred to as separate plates). The inner clutch plate 50 (also referred to as a friction plate), the clutch piston 60, and the compression spring 70 are provided.

The case 10 covers components such as the outer peripheral drum 20 from the outside. The case 10 has a front plate portion 11, a rear plate portion 13, and a peripheral plate portion (not shown). The cylindrical portion 15 extends in the −X direction from the front plate portion 11. A hydraulic circuit (not shown) for operating the clutch piston 60 is provided inside the front plate portion 11 and inside the cylindrical portion 15.

The outer peripheral drum 20 is connected to the clutch input shaft 1 so as to rotate integrally with the clutch input shaft 1. The outer peripheral drum 20 is arranged on the rear side (−X direction) of the front plate portion 11 and on the front side (+ X direction) of the inner peripheral drum 30.

The outer drum 20 includes a small-diameter annular front wall portion 21, a small-diameter tubular outer wall portion 22, a medium-diameter annular front wall portion 23, a medium-diameter tubular outer wall portion 24, a large-diameter annular front wall portion 25, and a large-diameter annular front wall portion 25. It has a tubular outer wall portion 26.

The small-diameter annular front wall portion 21 has a ring shape. The inner peripheral edge 21a of the small-diameter annular front wall portion 21 is connected to the rear end portion 1a of the clutch input shaft 1. The small-diameter tubular outer wall portion 22 has a tubular shape and extends from the outer peripheral edge 21b of the small-diameter annular front wall portion 21 to the front side (+ X direction). The cylindrical portion 15 is fitted in the recess formed by the small-diameter annular front wall portion 21 and the small-diameter tubular outer wall portion 22.

The medium-diameter annular front wall portion 23 has a ring shape and extends radially outward (+ Y direction) from the front end portion 22a of the small-diameter tubular outer wall portion 22. The medium-diameter tubular outer wall portion 24 has a tubular shape and extends from the outer peripheral edge 23a of the medium-diameter annular front wall portion 23 toward the rear side (−X direction). An annular wall portion 27 is arranged in the gap between the small-diameter tubular outer wall portion 22 and the medium-diameter tubular outer wall portion 24 on the rear side (-X direction) of the medium-diameter annular front wall portion 23. ing. The hydraulic chamber 28 is formed by the small-diameter tubular outer wall portion 22, the medium-diameter annular front wall portion 23, the medium-diameter tubular outer wall portion 24, and the annular wall portion 27.

The large-diameter annular front wall portion 25 extends radially outward (+ Y direction) from the rear end portion 24a of the medium-diameter tubular outer wall portion 24. The large-diameter tubular outer wall portion 26 extends from the outer peripheral edge 25a of the large-diameter annular front wall portion 25 toward the rear side (−X direction).

The large-diameter tubular outer wall portion 26 has concave portions 26a and convex portions 26b alternately arranged at predetermined intervals (15 degree intervals) in the circumferential direction. The concave portion 26a is a concave portion of a linear line that is recessed outward in the radial direction (+ Y direction) and extends in the X direction. The ridge portion 26b is a ridge portion of a line that protrudes inward in the radial direction (−Y direction) and extends in the X direction.

As shown in FIG. 1, the inner peripheral drum 30 is connected to the transmission input shaft 2 so as to rotate integrally with the transmission input shaft 2. Oil passages 2a and 2b are arranged inside the transmission input shaft 2. The oil passage 2a extends from the front end of the transmission input shaft 2 to the rear side (−X direction). The oil passage 2b extends radially outward (+ Y direction) from the rear end portion of the oil passage 2a. The oil passages 2b are arranged at six locations on the transmission input shaft 2 at equal intervals in the circumferential direction. The oil passages 2a and 2b pass the lubricating oil supplied to the transmission input shaft 2 side to the bottom 32 (described later) side. The oil passages 2a and 2b constitute the "first oil passage" of the present disclosure.

The inner peripheral drum 30 is arranged on the rear side (−X direction) of the outer peripheral drum 20 in the axial direction (X direction) and on the inner side (−Y direction) of the outer peripheral drum 20 in the radial direction (Y direction). ing.

The inner peripheral drum 30 has a tubular body portion 31 and an annular bottom portion 32. The body portion 31 extends from the radial outer peripheral edge 32b of the bottom portion 32 to the front side (+ X direction). The bottom portion 32 extends radially outward from the transmission input shaft 2 side (diameter inside). Further, a bulging portion 33 that bulges toward the front side (+ X direction) is provided inside the bottom portion 32 in the radial direction.

FIG. 2 is a diagram showing a transmission input shaft 2 and an inner peripheral drum 30 in the cross section taken along the line AA of FIG.

As shown in FIGS. 1 and 2, a plurality of concave portions 31a (corresponding to the “second oil passage” of the present disclosure) and convex portions 31b are arranged on the body portion 31. The concave portions 31a and the convex portions 31b are alternately arranged at equal intervals (for example, 15 degree intervals) in the circumferential direction. The number of concave portions 31a and convex portions 31b is the same (for example, 12). The concave portion 31a is a concave portion of a linear line that is recessed outward in the radial direction (+ Y direction) and extends in the X direction. As a result, the concave portion 31a passes the lubricating oil from one end side (for example, the rear end side) in the axial direction (X direction) to the other end side (for example, the front side). The ridge portion 31b is a ridge portion of a line that protrudes inward in the radial direction (−Y direction) and extends in the X direction.

The second oil passage may be any one that allows lubricating oil to pass from one end side to the other end side in the axial direction, and is not limited to the recessed portion 31a. For example, it may be an internal passage arranged inside the body portion 31 and extending in the axial direction (X direction), or a pipe-shaped passage arranged outside the body portion 31 and extending in the axial direction. Further, the number, shape, size, etc. of the second oil passage are set according to the required cooling capacity.

FIG. 3 is a developed view showing the body portion 31 developed in a straight line. The horizontal direction of FIG. 3 indicates the axial direction (X direction), and the vertical direction indicates the circumferential direction. Further, FIG. 3 shows the recessed portion 31a as a hatched region. A communication portion 31c is arranged in two or more predetermined recessed portions 31a in the plurality of recessed portions 31a. As shown in FIG. 3, for example, the communication portions 31c are arranged in the six recessed portions 31a. The communication portion 31c communicates the concave portion 31a (oil passage) and the space (the space between the outer peripheral drum 20 and the body portion 31).

As shown in FIG. 3, for example, the positions of the communication portions 31c are different from each other in the axial direction (X direction). The number, shape, size, etc. of the communication portions 31c are set according to the required cooling capacity.

For example, the communication portion 31c is a through hole that penetrates the body portion 31 in the radial direction (Y direction). The communication portion 31c may be any one that communicates between the second oil passage and the space, and is not limited to the through hole. For example, when the second oil passage is the above-mentioned internal passage, the communication portion 31c may be a communication hole that communicates the internal passage and the space. Further, for example, when the second oil passage is the above-mentioned pipe-shaped passage, the communication portion 31c may be a pipe-shaped branch passage that branches from the pipe-shaped passage.

One communication portion 31c is provided in one recessed portion 31a (second oil passage). FIG. 1 shows one communication portion 31c provided in the recessed portion 31a. A plurality of communication portions 31c may be provided in one recessed portion 31a. In this case, for example, the plurality of communication portions 31c provided in one concave portion 31a are positioned in the axial direction (X direction) with respect to the plurality of communication portions 31c provided in the other concave portion 31a. They may be arranged differently from each other. Here, "arranged so that the positions in the axial direction are different from each other" means that there are at least communication portions 31c arranged so that the positions in the axial direction are different from each other. Therefore, when there are communication portions 31c that are arranged so that their axial positions are different from each other, it is a case where there are communication portions 31c that have the same axial positions. However, it corresponds to "arranged so that the positions in the axial direction are different from each other".

The bottom portion 32 has a plurality of oil passages 32a extending in the radial direction (Y direction). For example, six oil passages 32a are arranged at the bottom 32 at equal intervals in the circumferential direction. The oil passage 32a is formed as a groove on the front wall surface of the bottom portion 32. The radial outer end of the oil passage 32a is connected to the rear end of the recessed portion 31a.

The bulging portion 33 is meshed with the transmission input shaft 2 by serration. The bulging portion 33 has a plurality of oil passages 33a extending in the radial direction (Y direction). For example, six oil passages 33a are arranged inside the bulging portion 33 at equal intervals in the circumferential direction. The radial outer ends of each oil passage 33a are connected to the radial inner ends of the corresponding oil passages 32a. The radial inner ends of the oil passages 33a are connected to the radial outer ends of the oil passages 2b to which they face. That is, the oil passage 32a connects the concave portion 31a and the oil passage 33a. The oil passage 33a connects the oil passage 32a and the oil passage 2b. The oil passages 32a and 33a constitute the "third oil passage" of the present disclosure.

The first oil passage is composed of oil passages 2c and 2d. The oil passage 2c is formed between the rear end portion 1a of the clutch input shaft 1 and the transmission input shaft 2 in the radial direction. The oil passage 2c passes the lubricating oil supplied to the transmission input shaft 2 side to the oil passage 2d.

The oil passage 2d is arranged on the front side (+ X direction) of the bulging portion 33. The upstream end of the oil passage 2d is connected to the oil passage 2c. The downstream end of the oil passage 2d is connected to the connection portion between the oil passage 32a and the oil passage 33a. The oil passage 2d is formed between the bulging portion 33 and the cover 2e arranged so as to cover the bulging portion 33 from the front side. The oil passage 2d passes the lubricating oil passed through the oil passage 2c to the connection portion between the oil passage 32a and the oil passage 33a.

The cover 2e has a small-diameter tubular portion 2f, an annular plate portion 2g, and a large-diameter tubular portion 2h. The tubular portion 2f is fitted with a gap between it and the transmission input shaft 2. The plate portion 2g extends radially outward from the rear end of the tubular portion 2f with a gap between it and the front surface of the bulging portion 33. The tubular portion 2h extends from the radial outer peripheral edge of the plate portion 2g to the rear side with a gap between the tubular portion 2h and the bulging portion 33.

As shown in FIG. 1, the outer clutch plate 40 is arranged radially inside (−Y direction) with respect to the outer peripheral drum 20. The plurality of outer clutch plates 40 are arranged along the axial direction (X direction). The outer clutch plate 40 arranged at the rear end of the plurality of outer clutch plates 40 is restricted from moving to the rear side (−X direction) by the snap ring 45.

A plurality of convex portions 41 (the same number as the concave portions 26a) are arranged along the circumferential direction on the outer peripheral edge portion of the outer clutch plate 40. The convex portion 41 is fitted into the concave portion 26a. As a result, the outer clutch plate 40 is arranged so as to rotate integrally with the outer peripheral drum 20.

As shown in FIG. 1, the inner clutch plates 50 are arranged radially outside (+ Y direction) with respect to the inner peripheral drum 30, and are arranged along the axial direction (X direction). A plurality of convex portions 51 (the same number as the concave portions 31a) are arranged along the circumferential direction on the inner peripheral edge portion of the inner clutch plate 50. As shown in FIG. 2, the convex portion 51 is fitted into the groove of the inner peripheral drum 30 (the groove on the outer peripheral surface side corresponding to the convex portion 31b). As a result, the inner clutch plate 50 is arranged so as to rotate integrally with the inner peripheral drum 30.

As shown in FIG. 1, the clutch piston 60 has a small-diameter tubular wall portion 61, an annular wall portion 62, and a large-diameter tubular wall portion 63. The small-diameter tubular wall portion 61 is extended in the axial direction (X direction) along the small-diameter tubular outer wall portion 22. The annular wall portion 62 extends radially outward (+ Y direction) from the front end portion 61a of the small diameter tubular wall portion 61. The large-diameter tubular wall portion 63 extends from the outer edge portion 62a of the annular wall portion 62 toward the rear side (−X direction).

The annular wall portion 62 partitions the hydraulic chamber 28 into a front side chamber 28a and a rear side chamber 28b. The large-diameter tubular wall portion 63 is extended to a position near the outer clutch plate 40 through a gap between the medium-diameter tubular outer wall portion 24 and the annular wall portion 27.

The compression spring 70 is arranged in a compressed state between the annular wall portions 27 and 62 so as to urge the annular wall portion 62 toward the front side (+ X direction).

By adjusting the hydraulic pressure of the front chamber 28a and the rear chamber 28b, the clutch piston 60 moves to the rear side (−X direction) against the urging force of the compression spring 70. As a result, the tip of the large-diameter tubular wall portion 63 pushes the outer clutch plate 40 in the −X direction, so that the outer clutch plate 40 and the inner clutch plate 50 come into contact with each other. As a result, the rotation of the clutch input shaft 1 is transmitted to the transmission input shaft 2.

Further, by adjusting the hydraulic pressure of the front side chamber 28a and the rear side chamber 28b, the clutch piston 60 moves to the front side (+ X direction) by the urging force of the compression spring 70. As a result, the tip of the large-diameter tubular wall portion 63 is separated from the outer clutch plate 40, and the outer clutch plate 40 is not pushed in the −X direction, so that the outer clutch plate 40 and the inner clutch plate 50 are separated from each other. .. As a result, the rotation of the clutch input shaft 1 is not transmitted to the transmission input shaft 2.

Next, an example of lubrication in the clutch device 100 will be described.
The lubricating oil supplied to the transmission input shaft 2 side flows from the oil passage 2a to the oil passage 33a via the oil passage 2b. The lubricating oil that has flowed into the oil passage 33a flows into the oil passage 32a by centrifugal force, passes through the oil passage 32a, and is supplied to the radial outer end of the oil passage 32a (the radial outer peripheral edge 32b of the bottom portion 32). In this case, since the oil passages 2b, 32a, 33a are arranged at equal intervals in the circumferential direction of the shaft, the lubricating oil is applied to the radial outer end of each oil passage 32a (the radial outer peripheral edge 32b of the bottom portion 32). It is evenly supplied without bias.

Further, the lubricating oil supplied to the transmission input shaft 2 side flows into the oil passage 2d via the oil passage 2c. The lubricating oil that has flowed into the oil passage 2d flows into the connection portion between the oil passage 32a and the oil passage 33a by centrifugal force, and is supplied to the radial outer end of the oil passage 32a through the oil passage 32a. Also in this case, since the oil passages 2c, 2d, and 33a are arranged at equal intervals in the circumferential direction of the shaft, the lubricating oil is supplied to the radial outer end of each oil passage 32a (the radial outer peripheral edge 32b of the bottom portion 32). ) Is evenly supplied.

That is, the lubricating oil supplied to the transmission input shaft 2 side does not scatter from the outer peripheral edge of the rear end portion 1a of the clutch input shaft 1, and is the radial outer end of each oil passage 32a (the radial outer side of the bottom portion 32). It is evenly supplied to the peripheral edge 32b). That is, the flow rates of the lubricating oil supplied to the radial outer edges of the oil passages 32a are equal.

Lubricating oil evenly supplied to the radial outer ends of the oil passages 32a flows into the concave portions 31a connected to each of the oil passages 32a, and the concave portions 31a are on the rear side (one end side in the axial direction). Flows from to the front side (the other end side in the axial direction). That is, the flow rates of the lubricating oil flowing through the plurality of recessed portions 31a are equal.

The lubricating oil flowing through the concave portion 31a is supplied to the space between the outer peripheral drum 20 and the body portion 31 through the communication portion 31c arranged in the concave portion 31a. This makes it possible to cool the heat generated by the friction between the clutch plates 40 and 50.

Further, since the communication portions 31c are arranged so as to be different from each other in the axial direction (X direction), the flow rates of the lubricating oil supplied to the space become uniform in the axial direction. That is, the lubricating oil is evenly supplied to the clutch plates 40 and 50 that are alternately arranged in the axial direction (X direction).

The clutch device 100 according to the above embodiment has an outer peripheral drum 20 that can rotate integrally with the clutch input shaft 1, a body portion 31 that is arranged radially inside the outer peripheral drum 20, and an axial direction in the body portion 31. Between the inner peripheral drum 30 which has a bottom portion 32 arranged on one end side of the clutch input shaft 1 and can rotate integrally with the transmission input shaft 2 arranged coaxially with the clutch input shaft 1, and between the outer peripheral drum 20 and the body portion 31. A clutch mechanism that interrupts torque between the outer peripheral drum 20 and the inner peripheral drum 30, and oil passages 2a, 2b, 2c that pass the lubricating oil supplied to the transmission input shaft 2 side to the bottom 32 side. , 2d, and are arranged in the circumferential direction of the body portion 31, and are arranged in each of the plurality of concave portions 31a and the plurality of concave portions 31a, which pass the lubricating oil passed to the bottom 32 side from the rear side to the front side. A plurality of communication portions 31c for communicating the concave portion 31a and the above space, whose positions are different from each other in the axial direction (X direction), are provided.

From the above configuration, the lubricating oil supplied to the transmission input shaft 2 side is supplied to the bottom 32 side of the inner peripheral drum 30 through the oil passages 2a, 2b, 2c, and 2d. The supplied lubricating oil flows to the outer peripheral edge in the radial direction along the bottom 32 by centrifugal force. The lubricating oil that has flowed to the radial outer peripheral edge of the bottom portion 32 passes through each concave portion 31a, passes through the communication portion 31c provided in each concave portion 31a, and is between the outer peripheral drum 20 and the body portion 31. It is supplied to the space. In this case, since the positions of the communication portions 31c arranged in each of the plurality of concave portions 31a are different from each other in the axial direction, the lubricating oil can be evenly supplied in the axial direction in the space where the clutch mechanism is accommodated. It becomes.

Further, in the clutch device 100 according to the above embodiment, the plurality of recessed portions 31a are arranged at equal intervals in the circumferential direction of the body portion 31. As a result, the lubricating oil that has flowed to the radial outer peripheral edge of the bottom portion 32 can be evenly supplied to each concave portion 31a.

Further, in the clutch device 100 according to the above embodiment, oil passages 32a and 33a are provided in the bottom portion 32, and the oil passages 2a, 2b, 2c and 2d are connected to each other by the oil passages 32a and 33a. To do. This makes it possible to reliably supply the lubricating oil to the radial outer peripheral edge of the bottom portion 32.

Further, in the clutch device 100 according to the above embodiment, a plurality of oil passages 32a and 33a are arranged at equal intervals in the circumferential direction on the bottom portion 32. This makes it possible to evenly and reliably supply the lubricating oil to the radial outer peripheral edge of the bottom portion 32.

Further, in the above embodiment, the oil passage has a recessed portion 31a in which the body portion 31 is recessed outward in the radial direction. Further, the communication portion 31c is a through hole penetrating the body portion 31. As a result, the configuration of the oil passage and the communication portion 31c can be simplified as compared with the case where the oil passage and the communication portion 31c are provided as separate parts, so that the weight can be reduced and the cost can be reduced. Is.

In addition, the above embodiments are merely examples of embodiment of the present disclosure, and the technical scope of the present disclosure should not be construed in a limited manner by these. .. That is, the present disclosure can be implemented in various forms without departing from its gist or its main features.

In the above embodiment, the oil passage 2d is formed between the bulging portion 33 and the cover 2e which is a separate component, but the present disclosure is not limited to this. For example, the bulging portion 33 and the cover 2e may be integrally formed, and an oil passage 2d may be formed inside the bulging portion 33. This makes it possible to reduce the number of parts.

The present disclosure is suitably used for a power transmission system including a clutch device that is required to equalize the flow rate distribution of the lubricating oil in the rotation axis direction.

1 Clutch input shaft 1a Rear end 2 Transmission input shaft 2a, 2b, 2c, 2d Oil passage 2e Cover 2f, 2h Cylindrical part 2g Plate part 10 Case 20 Outer circumference drum 30 Inner circumference drum 31 Body part 31a Concave part 31b Convex Stripe 31c Communication part 32 Bottom part 32a Oil passage 32b Radial outer peripheral edge 33 Protrusion part 33a Oil passage 40 Outer clutch plate 41 Convex part 45 Snap ring 50 Inner clutch plate 51 Convex part 60 Clutch piston 70 Compression spring 100 Clutch device

Claims (5)

An outer drum that can rotate integrally with the first shaft,
It has a tubular body portion arranged radially inside the outer peripheral drum and a bottom portion arranged on one end side in the axial direction of the body portion, and is arranged coaxially with the first axis. An inner drum that can rotate integrally with the second axis,
A clutch mechanism that is arranged in the space between the outer peripheral drum and the body portion and interrupts torque between the outer peripheral drum and the inner peripheral drum.
A first oil passage through which the lubricating oil supplied to the second shaft side is passed to the bottom side, and
A plurality of second oil passages arranged in the circumferential direction of the body portion and passing the lubricating oil passed to the bottom side from one end side to the other end side in the axial direction.
A plurality of communication portions for communicating the second oil passage and the space, in which positions arranged in each of the plurality of second oil passages are different from each other in the axial direction.
To prepare
Clutch device. The plurality of second oil passages are arranged at equal intervals in the circumferential direction of the body portion.
The clutch device according to claim 1. The second oil passage has a recessed portion in which the body portion is recessed outward in the radial direction.
The clutch device according to claim 1 or 2. The communication portion is a through hole penetrating the body portion.
The clutch device according to any one of claims 1 to 3. The bottom portion has a third oil passage connecting the first oil passage and the second oil passage.
The clutch device according to any one of claims 1 to 4.

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