Wet-type multi-plate clutch

Abstract

In a wet-type multi-plate clutch comprising an externally-toothed plate and an internally-toothed plate each of which is formed by adhering a friction material on a core plate and in which torque is transmitted by engaging the externally-toothed plate and the internally-toothed plate, the friction materials are adhered on opposed surfaces of the externally-toothed plate and the internally-toothed plate which are opposed to each other.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a sectional view showing externally-toothed plates and internally-toothed plates according to a first embodiment of the present invention in detail.

FIG. 2 is a sectional view showing externally-toothed plates and internally-toothed plates according to a second embodiment of the present invention in detail.

FIG. 3 is a sectional view showing externally-toothed plates and internally-toothed plates according to a third embodiment of the present invention in detail.

FIG. 4 is a sectional view showing externally-toothed plates and internally-toothed plates according to a fourth embodiment of the present invention in detail.

FIG. 5 is a sectional view showing externally-toothed plates and internally-toothed plates according to a fifth embodiment of the present invention in detail.

FIG. 6 is an axial partial sectional view for explaining a fundamental arrangement of a wet-type multi-plate clutch to which various embodiments of the present invention can be applied.

Claims

1. A wet-type multi-plate clutch comprising an externally-toothed plate and an internally-toothed plate each of which is formed by adhering a friction material on a core plate and in which torque is transmitted by engaging said externally-toothed plate with said internally-toothed plate, wherein: said friction materials are adhered on opposed surfaces of said externally-toothed plate and said internally-toothed plate which are opposed to each other.

2. A wet-type multi-plate clutch according to claim 1, wherein said friction materials are adhered on said internally-toothed plate or said externally-toothed plate at a plurality of positions in a radial direction.

3. A wet-type multi-plate clutch according to claim 1, wherein said friction materials are adhered asymmetrically on front and rear surfaces of said internally-toothed plate and said externally-toothed plate.

4. A wet-type multi-plate clutch according to claim 1, wherein axial thicknesses of said core plates of the respective externally-toothed and internally-toothed plates are defined so that heat absorbing capacities at friction surfaces of said externally-toothed and internally-toothed plates are substantially the same as each other.

5. A wet-type multi-plate clutch according to claim 1, wherein the friction material for engaging at an outermost diameter side is adhered on said internally-toothed plate.

6. A wet-type multi-plate clutch according to claim 1, wherein a thickness of said core plate of said internally-toothed plate is greater than a thickness of said core plate of said externally-toothed plate.

7. A wet-type multi-plate clutch according to claim 1, wherein a friction surface area of said friction material of said internally-toothed plate is greater than a friction surface area of said friction material of said externally-toothed plate.

8. A wet-type multi-plate clutch according to claim 1, wherein a thickness of said core plate of said externally-toothed plate is greater than a thickness of said core plate of said internally-toothed plate.

9. A wet-type multi-plate clutch according to claim 1, wherein, upon engagement of said clutch, a heat amount generated on a friction surface of said externally-toothed plate is equal to a heat amount generated on a friction surface of said internally-toothed plate.