JP2596189Y2 - Clutch cover assembly - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch cover assembly for a friction clutch of an automobile or the like, and more particularly to a clutch cover assembly in which the undulation of a load-deflection characteristic is reduced.

[0002]

2. Description of the Related Art A conventional clutch cover assembly for a friction clutch will be described with reference to FIGS.

In the drawing, reference numeral 1 denotes a diaphragm spring, in which a large number of window holes 2 are formed at equal angular intervals inside an annular portion 1a having a width b formed on the outer periphery. Slits 3 are formed to reach, and fingers 5 are integrally formed between the adjacent slits 3 toward the center hole 4 from the annular portion 1a.

In the diaphragm spring 1, a mounting piece 7 projecting inwardly at an equal angular interval on an inner circumference of a ring-shaped clutch cover 6 is bent twice in a window hole 2 to form an inner circumferential edge of an annular portion 1a. A pair of fulcrum rings 8 and 8 arranged on both sides of the stake are caulked, and when the central part is pushed in the direction of the arrow in FIG. It is curved.

The clutch cover 6 is fixed to the flywheel 9 by bolts 12, and the clutch plate 10 which comes in contact with and separates from the flywheel 9 is in contact with the outer peripheral portion of the diaphragm spring 1 via the presser plate 11, and is always in contact. The clutch plate 10 is pressed against the flywheel 9 by the resilience of the diaphragm spring 1 and rotates integrally. When the center of the diaphragm spring 1 is pushed in the direction of the arrow in FIG. The pressing force of the plate 10 is released, and the clutch plate 10 separates from the flywheel 9.

Here, the width b of the annular portion 1a of the diaphragm spring 1 must be adjusted so that the window hole 2 does not contact the full-circle rings 8, 8 by the mounting pieces 7 of the clutch cover 6. Since the ring 8 and the annular portion 1 cannot be sandwiched between the diaphragm springs 1 and 8, the size of the diaphragm ring 8 cannot be changed freely. .

[0007] For this reason, the width b of the annular portion 1a is generally large, and the undulation of the load-deflection characteristic is large, so that there is a disadvantage that the load varies greatly with the amount of depression of the clutch.

[0008]

The problem to be solved by the present invention is to provide a clutch cover assembly which eliminates the above-mentioned disadvantages and reduces the undulation of the load-deflection characteristic.

[0009]

According to the present invention, as means for solving the above problems, wide window holes are formed at equal angular intervals inside a continuous annular portion, and from each of the window holes to a center hole. By forming a slit to reach, each window hole of the diaphragm spring formed with a plurality of fingers extending in the center direction integrally with the annular portion and integrally projecting from the annular portion on both sides with an interval . Forming a tongue piece,
A full crumb ring was crimped to the tongue by bending a mounting piece protruding from the inner periphery of the clutch cover by applying a full crumb ring to both surfaces of the tongue.

[0010]

According to the present invention, as described above, a tongue piece integrally formed in the window hole from the annular portion is formed, and a fork clam ring is applied to both surfaces of the tongue piece to project on the clutch cover. Since the Fulcrum ring is crimped to the tongue by bending the mounting piece, the width of the annular part is reduced by cutting the window hole on the outer side on both sides of the tongue, and the load-deflection characteristics And the load variation with respect to the amount of depression of the clutch can be reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. The same parts as those in the conventional example are denoted by the same reference numerals, and description thereof will be omitted.

The window hole 2 of the diaphragm spring 1 is more deeply cut toward the outer periphery than the conventional example, and the width a of the annular portion 1a is smaller than the width b by that much.

A tongue 13 protrudes from the annular portion 1a toward the center of the window hole 2.
Is the same as the width b.

The clutch cover 6 and the full crumb rings 8 and 8 are the same as those in the above-mentioned conventional example. The full clam rings 8 and 8 are arranged with the tongue piece 13 interposed therebetween, and the mounting piece 7 is bent twice. Fulcrum rings 8, 8 and tongue pieces 1
3 is crimped.

In this embodiment, the window hole 2 is cut into the annular portion 1a by an amount corresponding to the protrusion of the tongue piece 13 so that the width thereof can be reduced, so that the undulation of the load-deflection characteristic is reduced. Thus, the load variation with respect to the amount of depression of the clutch is reduced.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a partially cutaway front view of a conventional example.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

[Explanation of symbols]

1: Diaphragm spring 1a: Annular portion 2: Window hole 3: Slit 4: Center hole 5: Finger 6: Clutch cover 7: Mounting piece 8: Full crumb ring
9: Flywheel 10: Clutch plate 11:
Press Plate 13: Tongue Piece

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16D 11/00-23/14

Claims (1)

(57) [Scope of request for utility model registration] 1. A wide window hole is formed at equal angular intervals inside a continuous annular portion, and a slit extending from each window hole to a center hole is formed so as to be integrated with the annular portion in a central direction. Forming a tongue piece integrally projecting at intervals from both sides from the annular portion in each of the window holes of the diaphragm spring formed with a plurality of fingers extending to;
A clutch cover assembly wherein the fork clam ring is crimped to the tongue by bending a mounting piece protruding from the inner periphery of the clutch cover by applying a fork ring to both surfaces of the tongue. .