JP2000179578A - Hydraulic clutch disengaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydraulic clutch disengaging device easy in changing a release bearing. SOLUTION: A hydraulic clutch disengaging device is provided with an annular cylinder part 2 which comprises an inner cylinder member 4 and an outer cylinder member 5 and provided on an outer circumference of a clutch main shaft 1, an annular piston 6 one end part of which is fitted in the annular cylinder part and on the other end part of which a plate 7 comprising a radial flange 7a and a cylindrical cover 7b extending in the axial direction from an end part of the radial flange is erected, a release bearing 8 which is fitted movably in the axial direction on the outer circumferential side of the inner cylinder member and supported by the plate, a seal member 15 arranged on an end face inside the annular cylinder part of the annular piston, and a means which is arranged between the plate of the annular piston and the outer cylinder member and energizes the release bearing through the plate, and the radial flange of the plate of the annular piston and the cylindrical cover are provided in an attachable/detachable manner thereto/therefrom.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic clutch disconnection device used for a vehicle or the like.

[0002]

2. Description of the Related Art FIG. 3 shows a known hydraulic clutch disconnection device of this type. In FIG.
Reference numeral 31 denotes an annular cylinder portion provided on the outer periphery of the clutch main shaft 30. The cylinder portion 31 is formed of an inner cylinder member 33 and an outer cylinder member 34 having radial mounting surfaces 33a and 34a for the clutch housing 32, respectively. , 34, an annular piston 35 is fitted slidably in the axial direction.
A seal member 45 that seals the cylinder space 31a is attached to an end of the piston 35 in the cylinder space 31a. A stepped portion 33c is formed on a radial mounting surface 33a of the inner cylinder member 33 with respect to the clutch housing 32, and is fitted with the stepped portion 33a of the clutch housing 32.

Further, the piston 35 is formed of a synthetic resin, and is integrally formed with a radial flange 36a of a plate 36 standing upright at a tip 35a thereof. The end of the plate 36 is bent in the axial direction to form a cylindrical cover 36b, and the tip is bent inward in the radial direction.
6c. A release bearing 37 is disposed inside the plate plate 36, and the end face of the outer ring 37 a is formed between the outer ring 37 a and the bent portion 36 c at the tip end of the cylindrical cover 36 b by the wave spring 38 so that the end face of the radial flange 36 a of the plate plate 36 is formed. It is pressed against the side. In addition, the outer ring 37a
A radial gap 39 is provided between the outer peripheral surface and the inner surface of the cylindrical cover 36b of the plate 36 so that the release bearing 37 can be radially aligned. The inner ring 37b of the release bearing 37 is always in contact with a clutch lever (not shown) and is rotated.

The radial flange 3 of the plate plate 36
A guide flange 44 guided on the outer surface of the outer cylinder member 34 is provided on a side surface of the release cylinder 6a on the side opposite to the release bearing.
Are fixed by press-fitting of a partially uneven portion (not shown). Further, a compression spring 40 is arranged between the side surface of the guide flange 44 and the radial mounting portion 34b of the outer cylinder member 34. The release spring 37 is formed by the compression spring 40.
The inner ring 37b is always in contact with the clutch lever. 41 is an outer cylinder member 34 and a plate 36
It is a boot that is disposed between and seals the cylinder portion 31 and the piston 35.

A port 42 for introducing hydraulic oil pressure-fed from a clutch master cylinder (not shown) and an oil passage 43 opening to the cylinder portion 31 are formed in the radial mounting portion 34b of the outer cylinder member 34. I have. From the clutch master cylinder to the cylinder part 3
By controlling the pressure of the hydraulic oil to the clutch 1, the pressing force of the inner ring 37 b of the release bearing 37 against the clutch lever is increased or decreased to disconnect or connect the clutch.

[0006]

In the above-mentioned conventional hydraulic clutch disconnecting device, the release bearing is assembled in a complicated manner with the annular piston and other parts. Removal is necessary, and replacement work is troublesome.

Accordingly, an object of the present invention is to provide a hydraulic clutch disconnection device in which the release bearing can be easily replaced.

[0008]

As means for solving the above-mentioned problems, there is provided an annular cylinder formed of an inner cylinder member and an outer cylinder member each having a radial mounting surface for a clutch housing and provided on an outer periphery of a clutch main shaft. And a plate plate comprising a radial flange and a cylindrical cover extending in the axial direction from the end of the radial flange is erected at the other end of the cylinder portion. An annular piston, a release bearing fitted on the outer peripheral side of the inner cylinder member so as to be movable in the axial direction, and supported by the plate plate; a seal member disposed on an end surface inside the annular cylinder portion of the annular piston; An urging member disposed between the plate plate and the outer cylinder member for urging the release bearing through the plate plate In the hydraulic clutch disconnecting device having a step, the radial flange of the plate plate of the annular piston and the cylindrical cover are detachable, and the release bearing is provided in a space defined by the radial flange and the cylindrical cover. It is characterized by being held in.

In the hydraulic clutch disconnecting device, radial projections are formed at a plurality of locations on the circumference of the end of the cylindrical cover, and the radial projections are respectively provided at a plurality of locations facing the projections on the radial flange. A first through-hole that allows the protrusion to be freely attached and detached in the axial direction; and a second through-hole that extends in the circumferential direction from the first through-hole and does not separate the protrusion in the axial direction. A fixing hole is formed, and the cylindrical cover is detachably attached to the radial flange by fitting the protrusion into the fixing hole.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. In FIG. 1, 2
Is an annular cylinder portion provided on the outer periphery of the clutch main shaft 1 and has a radial mounting surface 4 with respect to the clutch housing 3.
The annular piston 6 is formed of an inner cylinder member 4 and an outer cylinder member 5 having a and 5a, respectively, and an annular piston 6 is inserted into the cylinder space 2a between the cylinder members 4 and 5 so as to be slidable in the axial direction. At the end of the piston 6 in the cylinder space 2a, a plate plate 7 for sealing the cylinder space 2a is mounted. A radial mounting portion 4b of the inner cylinder member 4 with respect to the clutch housing 3 is fixed to a stepped portion 5c formed on a radial mounting portion 5b of the outer cylinder member 5 with respect to the clutch housing 3 by a bolt (not shown). A stepped portion 4c is formed on a radial mounting surface 4a of the inner cylinder member 4 with respect to the clutch housing 3, and is fitted with the stepped portion 3a of the clutch housing 3.

Further, the piston 6 is formed of a synthetic resin, and a plate plate 7 is formed upright at an end portion 6a to be integrally formed. Specifically, the plate plate 7 has a radial flange 7a integrally formed with one end embedded in the piston 6 and an axial direction detachably attached to the other end of the radial flange 7a in a configuration described later. And a cylindrical cover 7b extending therefrom. The distal end of the cylindrical cover 7b is bent inward in the radial direction. A release bearing 8 is held in a space defined by the radial flange 7a of the plate plate 7 and the cylindrical cover 7b.

Further, the detachable relationship between the radial flange 7a constituting the plate plate 7 and the cylindrical cover 7b will be described. FIG. 2A shows a cylindrical cover 7b, in which radial projections 16 are formed at a plurality of circumferential locations at the end on the radial flange 7a side. FIG.
(B) is a radial flange 7a erected on the piston 6, and the protrusion 1
6 is a substantially rectangular first through-hole 17 through which the shaft 6 can freely pass in the axial direction.
and a substantially rectangular second through-hole 17b extending in the circumferential direction from the first through-hole 17a and having a dimension such that the protrusion does not come off in the axial direction. Note that the shape of each through hole is not limited to a substantially rectangular shape, and at least the first through hole 17a is
Any shape may be used as long as it has a dimension that allows it to freely pass in the axial direction. Further, the second through-hole 17b may have a size that allows the protrusion 16 that has passed through the first through-hole 17a to not come off in the axial direction. Good.

The projection 16 and the fixing hole 17 have the above-described relationship, and the cylindrical cover 7b is connected to the radial flange 7a.
In the case of attaching to the projection, first, the projection 16 of the cylindrical cover 7b is inserted into the first through hole 17a of the fixing hole 17, and then the cylindrical cover 7b is rotated toward the second through hole 17b to thereby make the projection 1
The cylindrical cover 7b and the radial flange 7a are integrated with each other by locating the cylindrical cover 7 in the second through hole 17b so as not to come out in the axial direction. To separate the cylindrical cover 7b and the radial flange 7a, the above operation may be performed in reverse. The second through hole 17b is formed in the direction of the rotational torque of the engine so that the protrusion 16 is not automatically returned to the position of the first through hole 17a during use of the hydraulic clutch disconnection device.

The release bearing 8 basically comprises an inner race 8b, a rolling element 8c disposed between the outer race 8a and the inner and outer races 8b, 8a, and a bent portion at the tip of the outer race 8a and the cylindrical cover 7b. 7c and the outer ring 8a by the wave spring 9.
The end face is pressed against the outer surface (surface opposite to the cylinder side) of the radial flange 7 a of the plate plate 7. further,
A radial gap 10 is provided between the outer peripheral surface of the outer ring 8a and the inner peripheral surface of the cylindrical cover 7b so that the release bearing 8 can automatically align in the radial direction. The inner ring 8b of the release bearing 8 is rotated while always in contact with a clutch release (not shown).

Further, a radial flange 7a of the plate plate 7 and a radial mounting portion 5b of the outer cylinder member 5 are provided.
A compression spring 11 is arranged between the two. By the compression spring 11, the inner ring 8b of the release bearing 8 is in contact with a clutch lever (not shown). A boot 21 for sealing the cylinder portion 2 and the piston 6 is mounted between the outer cylinder member 5 and the plate plate 7.

[0016]

As described above, according to the present invention, since the radial flange and the cylindrical cover of the plate plate which is erected on the annular piston and supports the release bearing are detachable, the above-described method is required when the release bearing is replaced. It can be easily performed simply by separating the radial flange and the cylindrical cover.

[Brief description of the drawings]

FIG. 1 is a sectional view of a hydraulic clutch disconnection device according to an embodiment of the present invention.

2A is a perspective view of a tubular cover of the plate plate of the present invention, and FIG. 2B is a perspective view of a radial flange of the plate plate of the present invention.

FIG. 3 is a sectional view of a conventional hydraulic clutch disconnection device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clutch main shaft 2 Cylinder part 3 Clutch housing 4 Inner cylinder member 5 Outer cylinder member 6 Piston 7 Plate plate 7a Radial flange 7b Cylindrical cover 8 Release bearing

Claims (2)

[Claims] 1. An annular cylinder portion formed of an inner cylinder member and an outer cylinder member each having a radial mounting surface with respect to a clutch housing and provided on an outer periphery of a clutch main shaft, and one end portion fitted into the annular cylinder portion. At the same time, an annular piston having a plate formed of a radial flange and a cylindrical cover extending in the axial direction from the end of the radial flange at the other end, and an axially movable outer peripheral side of the inner cylinder member. And a release bearing supported by the plate plate, a seal member disposed on an end face inside the annular cylinder portion of the annular piston, and a plate plate disposed between the plate plate of the annular piston and the outer cylinder member. And a biasing means for biasing the release bearing through the hydraulic clutch disconnecting device. A hydraulic clutch, wherein a radial flange of a plate plate of a cylindrical piston and a cylindrical cover are detachable, and the release bearing is held in a space formed by the radial flange and the cylindrical cover. Blocking device. 2. A radial projection is formed at a plurality of locations on the circumference of an end of the cylindrical cover, and the projections are respectively axially placed at a plurality of locations on the radial flange opposed to the projections. A fixing hole formed by a first through hole that can be freely attached and detached, and a second through hole that extends in a circumferential direction from the first through hole and that does not separate the protrusion in the axial direction; By fitting the part into the fixing hole,
The hydraulic clutch disconnection device according to claim 1, wherein a cylindrical cover is detachably attached to the radial flange.