JP2002340022A - Self-aligning clutch release bearing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the impairing of aligning performance by a disc spring in a self-aligning clutch release bearing device. SOLUTION: In this self-aligning clutch release bearing device, a radial cover 6 with a radially aligned bearing 5, is pressed by a circular arc part 11 of an outer peripheral part of the disc spring 7 or a side face 12 of a lower part of the circular arc part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a self-aligning clutch release bearing device.

[0002]

2. Description of the Related Art As a self-aligning clutch release bearing device, a self-aligning clutch release bearing device used in, for example, a hydraulic clutch disconnecting device shown in FIGS. 4 and 5 is conventionally known. This bearing device comprises a clutch 41 having a hub 41 movable axially on a cylindrical member 40, a radial flange 42 erected on one end 41 a of the hub 41, and a radial flange 42 having an inner peripheral portion thereof. The outer peripheral portion 45a is in contact with the side surface 42a on the side of the spring member 43.
And a radial cover 45 provided with a release bearing 44 abutting on the clutch spring member 43 and an inner peripheral portion 45b of the radial cover 45 mounted on the hub 41 and pressed against the side surface 42a of the radial flange 42. The radial cover 45 is supported with frictional resistance in the radial direction. The disc spring 46 is
In many cases, spring steel is press-formed into a shape as shown in FIG. 6 and bent as shown in FIG. In addition,
Although not shown, the other end of the hub 41 serves as a piston inserted into a hydraulic cylinder. Also,
The cylinder member 40 is also an inner cylinder of a hydraulic cylinder.
47 is a compression spring, and 4
8 is a bellows.

[0003]

In the conventional self-aligning clutch release bearing device, the corner portion 49 of the outer diameter portion 46a of the disc spring 46 abutting on the radial cover 45 has an acute edge. Outer diameter portion 46a of the disc spring 46
When the radial cover 45 is performing the centering action on the radial flange 42 in a state where the corners 49 are strongly pressed against the contact portions of the radial cover 45, as shown in FIG. The edge-like corner portion 49 of the outer diameter portion 46a may cut into the radial cover 45 to form a groove-like scratch 50. In this case, the corner portion 49 of the outer diameter portion 46a of the disc spring 46 is restricted by the groove-shaped scratch 50, and the radial cover 45 does not move on the radial flange 42 in a centering manner. There is a problem that the bearing 44 attached to the direction cover 45 does not align in the radial direction.

Further, due to vibrations or the like during running of the vehicle, the outer diameter corner 49 of the disc spring 46 and the outer diameter corner 49 of the disc spring 46 are increased.
Abrasion is likely to occur on the radial cover 45 with which the bearing abuts, and the abrasion powder may cause abnormalities in the adjacent bearing performance.

The present invention provides a self-aligning clutch release bearing device using a disc spring that does not damage a groove-like scratch on a bearing mounting radial cover movable on a radial flange of a hub. It is intended to be.

[0006]

As means for solving the above-mentioned problems, according to the first aspect of the present invention, there is provided a hub capable of moving axially on a cylindrical member, and a radial flange provided upright on the hub. A radial cover in which an inner peripheral portion is in contact with a side surface of the radial flange on the clutch spring side and an outer peripheral portion is provided with a release bearing which is in contact with a clutch spring member; A self-aligning clutch release bearing device, comprising: a disc spring member for pressing and holding an inner peripheral portion of the disc spring to a side surface of a radial flange, wherein the radial cover is supported with frictional resistance in a radial direction. Part is bent toward the clutch spring member side so that the section becomes an arc section, and the inner circumference of the radial cover is radiused at the arc section of this disc spring or the lower side of the arc section. Characterized in that it is pressed against the side surface of the direction the flange.

According to the second aspect of the present invention, an annular body is provided at the outer peripheral end of the circular arc portion of the disc spring to be formed in a cross-sectional shape, and the inner peripheral surface of the annular body is parallel to the axis of the bearing. It is characterized in that it is formed on a surface that extends.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described. FIGS. 1 to 4 show a self-aligning clutch release bearing device according to the present invention. The hub 2 is axially movable on a cylindrical member 1 and a radial flange 3 is provided upright at one end of the hub 2. The inner peripheral portion 6b is formed on the side surface 3 of the radial flange 3 on the clutch spring member 4 side.
a, a radial cover 6 having a release bearing 5 mounted on an outer peripheral portion 6a thereof and abutting against the clutch spring member 4, and a circumferential groove 2b formed on the outer periphery of one end 2a of the hub 2 having an inner diameter portion. And a disc spring 7 which presses and clamps the inner peripheral portion 6b of the radial cover 6 to the side surface 3a of the radial flange 3 at an outer diameter portion 7b, and the radial cover 6 has friction in the radial direction. Supported with resistance. Although not shown, the other end of the hub 2 is provided as a piston inserted into a hydraulic cylinder. The tubular member 1 is an inner cylinder of a hydraulic cylinder. Further, 8 is a compression spring and 9 is a bellows.

The disc spring 7 is press-formed from spring steel, and its outer diameter portion 7b is bent toward the clutch spring member 4 so as to have an arcuate section 11 in cross section. The inner peripheral portion 6b of the radial cover 6 is pressed against the side surface 3a of the radial flange 3 at the side surface 12 below the circular arc portion. In addition, slits 14 are formed at equal intervals on the circumference of the inner diameter portion 7a of the disc spring 7 to provide elasticity. This structure is better understood in FIG. 3, before the disc spring 7 is mounted in the circumferential groove 2b of the hub 2.
With this configuration, the arcuate portion 11 of the outer diameter portion 7b of the disc spring 7 or the side surface 12 below the arcuate portion does not attack the radial cover 6 to cause a groove-like flaw as in the prior art. The movement performance of the radial direction cover 6 on the top 3, that is, the alignment performance of the release bearing 5 is reliably maintained.

Further, a radial cover 6 by a disc spring 7 is provided.
Since no damage to the bearing is prevented, wear particles due to wear caused by vibration or the like are not generated during running of the vehicle, and there is no fear of abnormalities in bearing performance.

Further, an annular body 10 is provided at the outer peripheral end of the circular arc portion 11 of the disc spring 7 so as to be formed in a cross-sectional shape, and the inner peripheral surface 10 a of the annular body 10 is aligned with the axis of the release bearing 5. It is formed on a plane extending in parallel. This ring 10
The inner peripheral surface 10a is a pressing jig 1 when the disc spring 7 is assembled.
The guide portion 3 facilitates centering when the disc spring 7 is assembled.

[0012]

According to the first aspect of the present invention, in the self-aligning clutch release bearing device, the radial cover is pressed by the circular portion or the lower side of the circular portion of the disc spring. Alignment performance can be maintained without groove-like scratches.

According to the second aspect of the present invention, since an annular body as a guide of a pushing jig is formed at the outer peripheral end of the disc spring, the centering of the disc spring into the hub becomes easy.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a self-aligning clutch release bearing device of the present invention.

FIG. 2 is a plan view of the disc spring of the present invention.

FIG. 3 is a view showing a state before the disc spring of the present invention is assembled.

FIG. 4 is a longitudinal sectional view of a conventional self-aligning clutch release bearing device.

FIG. 5 is a view showing a state in which a disc spring bites into a radial cover in the bearing device of FIG. 4;

FIG. 6 is a plan view of a conventional disc spring.

[Explanation of symbols]

 Reference Signs List 1 cylindrical member 2 hub 2a one end 2b peripheral groove 3 radial flange 3a side surface 4 clutch spring member 5 release bearing 6 radial cover 6a outer peripheral portion 6b inner peripheral portion 7 disc spring 7a inner diameter portion 7b outer diameter portion 8 compression spring 9 bellows DESCRIPTION OF SYMBOLS 10 Ring body 11 Circular cross section 12 Side surface 13 Pushing jig 14 Slit

Claims (2)

[Claims] 1. A hub movably in the axial direction on a cylindrical member, a radial flange erected on the hub, and an inner peripheral portion abutting against a side surface of the radial flange on the clutch spring side. A radial cover having a release bearing attached to a clutch spring member on an outer peripheral portion thereof; and a disc spring member mounted on a hub and pressing and clamping an inner peripheral portion of the radial cover to a side surface of the radial flange. In the self-aligning clutch release bearing device, wherein the radial cover is supported with frictional resistance in the radial direction, the outer periphery of the disc spring is bent toward the clutch spring member such that the outer peripheral portion has an arcuate cross section. A self-aligning clutch relay, wherein an inner peripheral portion of a radial cover is pressed against a side surface of a radial flange at a side of an arc portion or a lower portion of the arc portion of the spring. Ball bearing device. 2. An annular body is provided at an outer peripheral end of an arc portion of the disc spring and is formed in a cross-sectional shape, and an inner peripheral surface of the annular body is formed on a surface extending parallel to an axis of the bearing. The self-aligning clutch release bearing device according to claim 1, wherein: