Clutch disc

Details Clutch disc Clutch disc

1988-02-19

1989-08-01

Diehl, Dwight G.

192 clutches and power-stop control

Elements

Engaging surfaces

F16D 1346, F16D 1364

Patent

active

048527114

DESCRIPTION:

BRIEF SUMMARY
D E S C R I P T I 0 N

1. Technical Field
This invention relates to a clutch disc wherein a cushioning plate is so installed as to be inclined relatively to a side plate.
2. Background Art
In a conventional clutch disc, cushioning plates 102 are secured to an outer peripheral part of a side plate 100 with spaces left therebetween in a circumferential direction and stop pins 104 are disposed between fastening portions of the cushioning plates 102, as illustrated in FIG. 6.
Therefore, in case when the outer peripheral part of the side plate 100 is bent into a conical surface, i.e. subjected to a so-called conical press work, to have the cushioning plate 102 incline relatively to the side plate 100; the stop pin 104 becomes a hinderance to the conical press work so that the stop pin 104 must be moved to a radially inside position as illustrated by a circle of two-dot chain line of FIG. 6.
An object of this invention is to provide a clutch disc, in which the stop pin can be disposed at the outer peripheral part of the side plate even when the outer peripheral part of the side plate is subjected to the conical press work.


DISCLOSURE OF INVENTION

This invention relates to a clutch disc wherein a disc-like hub flange extending in a radially outer peripheral direction of a spline hub is installed, a circumferentially divided cushioning plate is fastened to a radial outside of one side plate among side plates sandwiching the hub flange, friction facings are secured to the cushioning plate, and a stop pin circumferentially connecting the both side plates is installed between cushioning plate fastening portions of said one side plate; characterized by that a stepped coined section is formed at a stop pin fitting part of the side plate, an outer peripheral part of the side plate to which the cushioning plate is fastened is formed into a conical shape, and the cushioning plate is inclined in relation to the side plate. The stepped coined section is formed at the stop pin fitting part of the side plate so that the stop pin does not become hindrance to the conical press work of the outer peripheral part of the side plate. Namely, the stepped conical section is formed at the stop pin fitting part of the side plate, the outer peripheral part of the side plate to which the cushioning plate is fastened is formed into the conical shape, and the cushioning plate is inclined in relation to the side plate; so that a clearance is provided between an outer peripheral surface of the stop pin and an end face of the coined section and an interference between the end face and the stop pin can be avoided even when the outer peripheral part of the side plate is subjected to the so-called conical press work within a specified range.
Consequently, it becomes unnecessary to move the stop pin to the radially inside position as in the conventional case of FIG. 6 and an allowance for design of the entire clutch disc can be widened.


BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a vertical sectional view of a
clutch disc according to the invention.
FIG. 2 is a view viewed in a direction of arrow II of FIG. 1.
FIG. 3 is an enlarged view of a part III of FIG. 2.
FIG. 4 is a schematic structural view showing another embodiment.
FIG. 5 is a view taken on a line V--V of FIG. 3.
FIG. 6 is a schematic structural view showing a conventional embodiment.


MODE FOR CARRYING OUT THE INVENTION

The invention will be better understood from the following description taken in connection with the accompanying drawings.
In FIG. 1 (taken on a line I--I of FIG. 2) showing the vertical sectional view of the two-stage hysteresis type clutch disc according to the present invention, 10 is a spline hub. Spline internal tooth 12 spline fitting onto an input shaft 0 of a transmission (not shown) is formed on an inner peripheral surface of the spline hub 10. A radially outwardly extending hub flange 14 is formed integrally on the spline hub 10, and a clutch plate 16 and a retaining plate 18 (both being a side plate) are disposed on both sides of the hub flange 14.
Betwee

REFERENCES:
patent: 2038016 (1936-04-01), Wemp
patent: 2182999 (1939-12-01), Wolfram
patent: 2392246 (1946-01-01), Katcher
patent: 2534991 (1950-12-01), Reed
patent: 2541296 (1951-02-01), Saks
patent: 3624770 (1971-11-01), Fujita et al.
patent: 4546866 (1985-10-01), Kamio

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