JPH0534323U - Oil groove structure of clutch plate - Google Patents

Abstract

(57) [Abstract] [Purpose] The lubricating oil retained in the groove of the clutch plate is prevented from being dissipated from the groove due to the action of centrifugal force under high rotation speed, and the oil out of the clutch plate is generated. To prevent burn-in and damage. A groove having a wide opening 12a located on the inner peripheral end 10b side of the clutch plate on the surface 10a of the clutch plate 10 and converging on a closed part 12b located on the outer peripheral end 10c side. 12 are formed. The groove 12 is formed such that the opening 12a is formed at the deepest depth and becomes gradually shallower toward the closed portion 12b. In the closed portion 12b, the same as the surface 10a where the groove 12 is not formed. It is considered to be a plane.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to an oil groove structure for a clutch plate, and more particularly to an oil groove structure for a clutch plate used in a wet multi-plate clutch structure that can be used under high rotation.

[0002]

[Prior Art]

 As an oil groove structure of a clutch plate constituting a conventional wet multi-plate clutch structure, there is, for example, a clutch plate clutch facing structure disclosed in Japanese Utility Model Laid-Open No. 1-80836. FIG. 7 shows a clutch facing structure of a clutch plate disclosed in Japanese Utility Model Laid-Open No. 1-80836, wherein a radial pattern is formed on the surface 100a of the clutch plate 100 so as to communicate from the inner peripheral end 100b to the outer peripheral end 100c. The groove 102 formed in the above is formed. In this clutch plate 100, the lubricating oil is retained in the groove 102 to improve the lubricating performance of the clutch plate 100.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional technique, since the groove 102 communicates from the inner peripheral end 100b to the outer peripheral end 100c of the clutch plate 100, it is retained in the groove 102 when used under high rotation. There is a problem in that the lubricating oil that has been moved moves toward the outer peripheral end portion 100c due to the action of centrifugal force and is easily dissipated from the outer peripheral end portion 100c to the outside of the clutch plate 100. For this reason, there is a problem that the clutch plate 100 is likely to run out of lubricating oil, and seizure or damage is likely to occur.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is that the lubricating oil held in the groove of the clutch plate under high rotation speed. It is an object of the present invention to provide an oil groove structure for a clutch plate that prevents the oil from running out of the groove due to the action of centrifugal force, eliminates the occurrence of running out of lubricating oil, and prevents seizure or damage of the clutch plate. To do.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the oil groove structure of the clutch plate in the present invention is such that the groove formed radially on the surface of the clutch plate is located on the extension of the groove without extending to the outer peripheral end of the clutch plate. The surface of the outer peripheral edge is located on the same plane as the surface of the clutch plate where no groove is formed, and the depth and width of the groove are set to the inner peripheral edge and the outer peripheral edge of the groove. The shape is different from that of the part.

[0006]

[Action]

 Even if the lubricating oil held in the groove under high rotation speed is subjected to centrifugal force and the lubricating oil moves toward the outer peripheral edge of the clutch plate, the movement of the outer peripheral edge does not form the groove. Therefore, the lubricating oil can be forcibly retained in the groove. Furthermore, by making the groove depth and groove width different between the inner peripheral edge and the outer peripheral edge, the amount of lubricating oil in the groove of the clutch plate increases and the clutch plate face is lubricated. It can be done effectively.

[0007]

【Example】

 Hereinafter, the oil groove structure of the clutch plate according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a first embodiment of an oil groove structure of a clutch plate according to the present invention, in which an opening 12a located on the inner peripheral end 10b side of the clutch plate 10 is formed on a surface 10a of the clutch plate 10. Is formed wide, and a groove 12 that converges at the closed portion 12b located on the outer peripheral end 10c side is formed. The groove 12 is formed such that the opening 12a is formed at the deepest depth and becomes gradually shallower toward the closed portion 12b. It is considered to be the same plane.

FIG. 2 shows a second embodiment of the oil groove structure of the clutch plate according to the present invention, in which the width of the groove 22 is the opening 22a located on the inner peripheral end 10b side of the clutch plate 10 and the outer periphery. It differs from the first embodiment only in that it is the same in the closing portion 22b located on the end portion 10c side.

In the above structure, as shown in FIG. 3, the clutch plates 50 and the clutch plates 10 having no groove are alternately arranged to form a wet multi-plate clutch structure, and the center line O It is assumed that it rotates at high speed in the arrow direction around -O. At this time, the lubricating oil held in the groove 12 (22) moves toward the outer peripheral end 10c of the clutch plate 10 by the action of centrifugal force. However, since the closed portion 12b (22b) of the groove 12 is formed on the same plane as the surface 10a of the clutch plate 10, the surface 50a of the facing clutch plate 50 and the closed portion 12b (22b) come into contact with each other. As a result, the lubricating oil is prevented from crossing the closed portion 12b (22b) and escaping from the inside of the groove 12 (22) to the outside of the clutch plates 10 and 50.

FIG. 4 shows a third embodiment of the oil groove structure of the clutch plate according to the present invention, in which the opening 32a located on the inner peripheral end 10b side is formed wide on the surface 10a of the clutch plate 10. A groove 32 that is formed and converges at a closed portion 32b located on the outer peripheral end 10c side is formed, and the depth of this groove 32 is the same from the opening 32a to the closed portion 32b.

In the above structure, a wet multi-plate clutch structure is constructed as shown in FIG. 5 in the same manner as the wet multi-plate clutch structure shown in FIG. 3, and the center line OO is taken as the center in the arrow direction. It shall rotate at high speed. At this time, the lubricating oil retained in the groove 32 moves to the outer peripheral end 10c of the clutch plate 10 by the action of centrifugal force. However, since the closed portion 32b of the groove 32 is formed to be flush with the surface 10a of the clutch plate 10, the surface 50a of the facing clutch plate 50 and the closed portion 32b come into contact with each other to prevent the lubricating oil. Is prevented from escaping from the groove 32 beyond the closing portion 32b to the outside of the clutch plates 10 and 50.

Further, according to the third embodiment, the opening 32a of the groove 32 is set to be wide, and the depth of the opening 32a constitutes the entire groove 32, so that an extremely large amount of lubricating oil is provided. Since it can be held in the groove 32, the lubricating ability can be further improved.

FIG. 6 shows a fourth embodiment of the oil groove structure of the clutch plate according to the present invention, in which the open end located on the inner peripheral end 10b side is located on the surface 10a of the clutch plate 10 and the outer peripheral end 10c. In addition to being a narrower groove, this groove is formed such that the opening 42a is formed at the shallowest depth and becomes gradually deeper toward the closed portion 42b. In the closed portion 42b, the groove 12 is formed. The surface is not formed and is the same plane as the surface 10a. According to the fourth embodiment, the groove 42 becomes deeper and the groove width becomes wider from the inner peripheral end 10b toward the outer peripheral end 10c, so that the sliding speed of the clutch plate on the surface 10a is high. The outer part can be sufficiently lubricated.

[0015]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects.

A groove formed radially on the surface of the clutch plate is not extended to the outer peripheral end portion of the clutch plate, but the surface of the outer peripheral end portion located on the extension of the groove is formed on the surface of the clutch plate where the groove is not formed. It should be located on the same plane as the surface area, and since the groove depth and groove width are different on the inner and outer peripheral sides of the clutch plate, the lubricating oil retained in the groove under high rotation can be Even if the lubricating oil moves toward the outer peripheral edge of the clutch plate due to centrifugal force, the movement is blocked by the outer peripheral edge that is not formed with a groove, so the lubricating oil is forced into the groove. Can be held.

Since a large amount of lubricating oil can be retained in the groove, the clutch plate does not run out of lubricating oil, and seizure or damage can be prevented.

[Brief description of drawings]

FIG. 1 shows a first embodiment of an oil groove structure of a clutch plate according to the present invention, (a) is a partial front view, and (b) is a sectional view of a main part taken along line BB of (a). And (c) is a perspective view of a main part.

2A and 2B show a second embodiment of the oil groove structure of the clutch plate according to the present invention, FIG. 2A is a partial front view, and FIG. 2B is a sectional view taken along the line BB of FIG. And (c) is a perspective view of a main part.

FIG. 3 is an explanatory cross-sectional view of a main part showing a usage state of the wet multi-plate clutch structure according to the first embodiment and the second embodiment.

FIG. 4 is a perspective view of an essential part showing a third embodiment of the oil groove structure of the clutch plate according to the present invention.

FIG. 5 is an explanatory cross-sectional view of main parts showing a usage state of the wet multi-plate clutch structure according to the third embodiment.

6A and 6B show a fourth embodiment of the oil groove structure of the clutch plate according to the present invention, FIG. 6A is a partial front view, and FIG. 6B is a sectional view of a main part taken along line BB of FIG. And (c) is a perspective view of a main part.

7A and 7B show a conventional oil groove structure of a clutch plate, FIG. 7A is a partial front view, and FIG. 7B is a sectional view of a principal part taken along line BB of FIG. 7A.

[Explanation of symbols]

 10 Clutch Plate 10a Surface 10b Inner Circumference 10c Outer Radius 12 Groove 12a Opening 12b Closing 22 Groove 22a Opening 22b Closing 32 Groove 32a Opening 32b Closing 42 Groove 42a Opening 42b Closing 50 Surface 50a

Claims (1)

[Scope of utility model registration request] 1. A clutch plate having grooves formed radially to form a wet multi-plate clutch structure, wherein the grooves are not extended to an outer peripheral end portion of the clutch plate,
In the clutch plate, the surface of the outer peripheral end portion of the clutch plate located on the extension of the groove is located on the same plane as the surface portion of the clutch plate in which the groove is not formed, One or both of the depth and the width of the inner peripheral edge portion and the outer peripheral edge portion are different, the oil groove structure of the clutch plate.