JPH0118300B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a clutch disk, and more particularly to a clutch disk that improves the amount of hysteresis during idling and running of a vehicle.

In order to reduce various vibrations and resonances generated from the drive system, and the noise caused by these,
It is preferable to lower the rigidity and increase the torsion angle of the first stage of the clutch disc, and to increase the amount of hysteresis in the second and subsequent stages (see FIG. 3). For example, even if the amount of hysteresis is increased, if the torsion angle cannot be increased, it will not be effective in reducing vibration and noise when the vehicle is idling.
Furthermore, even if the torsion angle of the first stage is increased to effectively absorb vibrations during idling, if there is no increase in the amount of hysteresis from the second stage onwards, vibration absorption during running cannot be expected.

This invention increases the torsion angle in the first stage and increases the amount of hysteresis in the second and subsequent stages, thereby reducing vibration and noise when the vehicle is idling and running. It is an object of the present invention to provide a clutch disk which is connected to a flange via a spring and further includes a thrust plate that acts on the first stage and a thrust plate that acts on the second stage.

Embodiments of the invention will be described with reference to the accompanying drawings.

Spaced protrusions 3 are provided on the outer periphery of a hub 2 constituting the clutch disk 1, an inner periphery protrusion 5 of an annular flange 4 is inserted between the protrusions 3 of the hub 2, and a spring 6 is arranged between the two. , the flange 4 is connected to the hub 2 via the spring 6. Main side plates 7 on both sides of flange 4
and a secondary side plate 8 are arranged. The side plates 7 and 8 are integrally connected by rivets 9, and the clutch face 10 on the outer periphery of the main side plate 7 can be pressed against the flywheel by a pressure plate (not shown). A torsion spring 11 is arranged in a window provided in the flange 4 and both side plates 7 and 8. A first thrust plate 12 is disposed between the main side plate 7 and the side surface of the protrusion of the hub 2 so as to be in constant frictional sliding contact.

The first plate 13 has a flange 4 on its outer periphery.
The inner circumferential portion thereof is shaped to follow the outer surface of the hub 2, and the inner circumferential portion of the second plate 15 is engaged with the inner circumferential portion of the first plate 13. make it stop The inner circumferential portion of the secondary side plate 8 is positioned between the first and second plates 13 and 15. A second thrust plate 16 is placed between the first plate 13 and the secondary side plate 8,
Further, a third thrust plate 17 is arranged between the sub-side plate 8 and the second plate 15. The fourth thrust plate 18 disposed outside the second plate 15 receives the biasing force of the disc spring 19 and comes into contact with a pressing plate 20 provided so as to be slidable in the axial direction of the hub 2 .

The friction coefficients of the first and fourth thrust plates 12 and 18 are made smaller than the friction coefficients of the second and third thrust plates 16 and 17.

In the above-mentioned configuration, in the first stage where the transmitted torque is small, the spring 6 disposed between the hub 2 and the flange 4 and the fourth thrust plate 18 act to increase the torsion angle (see Fig. 3). . From the second stage onwards,
The second and third thrust plates 16, 17 act,
Since the friction coefficients of both thrust plates 16 and 17 are high, a large amount of hysteresis can be achieved (see FIG. 3).

As is clear from the above, the first stage includes a spring disposed between the hub and the flange, and a fourth thrust between the second plate and the pressing plate, which are connected to the hub via the first plate. In the second and subsequent stages, the second and third thrust plates, which have a higher friction coefficient than the fourth thrust material, are used to increase the amount of hysteresis. The characteristics shown in the figure are obtained. Therefore, vibration and noise can be effectively reduced when the vehicle is idling and running.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of a clutch disk according to an example of the present invention, FIG. 2 is a partial side view showing a spring disposed between a hub and a flange, and FIG. 3 is a torsional angle and transmission according to an example of the present invention. It is a performance diagram showing the relationship with torque. In the diagram: 1...Clutch disc, 2...Hub,
4...Flange, 6...Spring, 7, 8...Side plate,
13...first plate, 15...second plate,
12, 16, 17, 18... Thrust plate, 19...
...disc spring, 20...pressing plate.

Claims (1)

[Claims] 1. A clutch disk that has an annular flange located radially outward of the hub and main and secondary side plates facing the flange, and in which torsion springs are arranged in windows provided in the flange and the main and secondary side plates. The outer peripheral protrusion of the hub is inserted between the inner peripheral protrusions of the flange and connected to the hub with a spring interposed between both protrusions, and the outer peripheral part is locked to the flange and the inner peripheral protrusion is connected to the hub. a first plate having a peripheral portion along the hub; a second plate having an inner peripheral portion facing the pressing plate which is engaged with the inner peripheral portion of the first plate and receives the biasing force of a disc spring; and the main side plate. a first thrust plate disposed between the protrusion of the hub; second and third thrust plates disposed on both sides of the secondary side plate located between the first plate and the second plate; a fourth thrust plate interposed between the second plate and the pressing plate;
In the second stage, a spring between the flange and the hub, a first thrust plate, and a fourth thrust plate act, and in the second and subsequent stages, the second and third thrust plates act. The clutch disc is characterized by: