JP2002213491A - Clutch release bearing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clutch release bearing device, having an outer ring formed by a press, is easily installed, and enabling grasping of the installation completed for aligning drag-energizing spring to a fixed position. SOLUTION: The outer ring 12 is composed of a plate material formed by the press. Since a spring member 30 sandwiches a guide sleeve 20 and the outer ring 12 by being inserted from the radial direction outside, installation is facilitated, and whether the spring member 30 has been installed in the fixed position can be easily seized after installation. The outer ring 12 is composed of the plate material formed by the press, weight and cost can be reduced by using a steel plate quenched after the press, and there is also the effect of being able to restrain abrasion by sliding and vibration at alignment time. Since there is no need to form a disc spring engaging groove on the outer periphery of the guide sleeve 20, the guide sleeve 20 can be molded by axial draw molding, so that the cost can be reduced. The inside seal of a bearing 10 can also be omitted, and as a result, the cost can be reduced further.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a clutch release bearing device.

[0002]

2. Description of the Related Art When operating a clutch mounted on a vehicle or the like, which is a power interrupting device using a friction plate, a diaphragm fork of a clutch cover is pressed in an axial direction by a release fork as an input member, so that the spring is pressed. Power is disconnected by releasing the biasing force from the friction plate.

[0003] The release fork is usually arranged on a fixed side of a vehicle body or the like, but a clutch cover is attached to a flywheel or the like of an engine so as to rotate integrally therewith. Therefore, when the release fork directly presses the diaphragm spring of the clutch cover, the contact portion is worn. Therefore, a clutch release bearing including a rotating wheel that integrally rotates by contacting a diaphragm spring that is a rotating member, and a non-rotating mechanism that holds the bearing in a predetermined state and receives an input from a release fork. A clutch release bearing device including a bearing holding member (sleeve) is provided between a diaphragm spring and a release fork as shown in, for example, Japanese Patent Application Laid-Open No. 2000-145815.

FIG. 3 is a sectional view showing a conventional clutch release bearing device A as disclosed in Japanese Patent Application Laid-Open No. 2000-145815. In FIG. 3, the inner ring 3 of the bearing 3 is shown.
The tip of a faces the diaphragm spring,
The rear end (the right end in the figure) of the outer ring 3 b of the bearing 3 is in contact with the side plate 2 attached to the end of the sleeve 1. In this state, the bearing 3 is attached to the sleeve 1 by urging the rear end of the outer ring 3b against the side plate 2 by the disc spring 4 arranged inside the outer ring 3b. When the side plate 2 is pushed from the rear (right side in the figure) by the tip of a release fork (not shown), the entire bearing device A can move in the axial direction so that the tip of the inner ring 3a comes into contact with the diaphragm spring. . Since the outer ring 3b is press-formed, the disc spring 4 is used by utilizing the flange of the outer ring 3b so that the centering drag can be easily applied.

Since the rear end of the outer ring 3b is urged by a disc spring 4 so as to be movable in the radial direction with respect to the side plate 2, the side plate 2 is pressed by a release fork from the rear and the bearing 3 is pressed. When the inner ring 3a contacts the diaphragm spring of the clutch (not shown), the bearing is automatically aligned by the aligning force even if there is eccentricity between them.

[0006]

By the way, in the above-mentioned prior art configuration, the disc spring 4 is incorporated inside the outer ring 3b. From the (left end in the figure) side, it must be slid to a predetermined position while being elastically deformed, which takes time for assembling, and the outer periphery of the sleeve 1 may be scratched. Absent. Further, a groove for engaging the disc spring 4 is required on the outer periphery of the sleeve. Since such grooves can be formed only by radial draw molding in which the mold is separated in the radial direction at the time of molding, the cost increases.

Further, since the disc spring 4 cannot be seen from the outside of the clutch release bearing device A after the assembly, the disc spring 4
It is difficult to reliably determine whether or not is incorporated in a predetermined position. Therefore, a large number of inspection steps are required, such as 100% inspection of the centering drag for the confirmation, and the cost is further increased. Further, since the disc spring 4 is provided behind the inner ring 3a, it is difficult to form a labyrinth seal with the rear end of the inner ring 3a, and it is necessary to provide a separate seal structure 5 on the rear side. Increase costs.

In view of the above-mentioned problems of the prior art, the present invention is characterized in that the outer ring is formed by a press, the assembly is easy, and the spring for biasing the centering force is assembled in a fixed position. An object of the present invention is to provide a clutch release bearing device that can be grasped.

[0009]

In order to achieve the above object, a clutch release bearing device of the present invention includes an inner ring and an outer ring which are concentrically arranged and rotate relative to each other, one of which is fixed and the other of which rotates. A clutch release bearing in which a wheel comes into contact with a rotating member of the clutch device, a cylindrical bearing slidably fitted on a guide shaft, and a resin bearing holding member including a flange portion; A clutch release bearing device comprising: a coupling member that holds the one ring of the clutch release bearing so as to be movable in a radial direction with respect to a bearing holding member;
The connecting member is made of a plate material formed by pressing, and the connecting member is made of a spring member that sandwiches the bearing holding member and the outer ring by being inserted from the outside in the radial direction.

[0010]

The clutch release bearing device of the present invention includes an inner ring and an outer ring which are concentrically arranged and rotate relative to each other, one of which is fixed, and the other of which rotates contacts the rotating member of the clutch device. A clutch release bearing, a cylindrical portion fitted slidably on the guide shaft, and a resin bearing holding member having a flange portion,
A clutch release bearing device comprising a coupling member for holding the one ring of the clutch release bearing so as to be movable in a radial direction with respect to the bearing holding member, wherein the outer ring is formed by pressing; The connecting member is made of a plate material, and the connecting member is made of a spring member that sandwiches the bearing holding member and the outer ring by being inserted from the outside in the radial direction. It can be easily grasped whether or not it is attached to the position. Further, the outer ring is made of a plate material formed by pressing, and by using a steel plate or the like that has been quenched after pressing, the weight and cost can be reduced, and wear due to sliding and vibration during alignment is reduced. There is also an effect that can be suppressed. Further, since there is no need to form a disc spring engagement groove on the outer periphery of the bearing holding member, the bearing holding member can be formed by axial draw molding, thereby reducing costs. Further, the seal on the inner side of the bearing can be omitted, thereby further reducing the cost.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a sectional view of a clutch release bearing device according to an embodiment of the present invention. In FIG. 1, a clutch release device includes a clutch release bearing 10 and a guide sleeve 20 as a bearing holding member.
And a spring member 30 as a connecting member. The clutch release bearing 10 includes a substantially tubular inner ring 11 having a contact portion 11a at the left end, a short tubular outer ring 12 concentrically enclosing the inner ring 11, and a roller between the inner ring 11 and the outer ring 12. A space defined by a plurality of balls 15 movably arranged, a retainer 16 for holding the balls 15 at predetermined intervals, and an inner ring 11 and an outer ring 12 on both axial sides of the ball 15 is dust-proof and oil-tight. And a seal 17 for sealing. Seal 17
Is a so-called fine contact seal in which the lip 17a comes into contact with the outer periphery of the inner ring 11 with a slight pressing force.

The inner race 11 is rotatably supported by the outer race 12. The contact portion 11a of the inner ring 11 formed by press-forming the quenched steel plate has a shape that is turned outward in the radial direction, and is configured to contact the diaphragm spring of the clutch cover (not shown). Has become. Further, the end of the inner ring 11 on the opposite side to the contact portion 11a may be left as a blank by pressing, and the manufacturing cost may be reduced without performing the cutting. The outer ring 12 is also formed by press-forming a quenched steel plate, and the inner diameter thereof can be arbitrarily reduced by drawing.
By narrowing a (the right end in the figure), the distance between the inner ring 11 and the rear end 11b can be reduced, thereby providing a labyrinth sealing effect.

The guide sleeve 20 is made of resin and is formed by axial draw molding at a relatively low cost. The guide sleeve 20 has a tubular main body 21 and a flange portion extending radially from the outer periphery near the center of the main body 21. 22 and flange 2
2 and an outer wall portion 23 protruding leftward in the axial direction (FIG. 1) at the radially outer end. A guide shaft (not shown) extends inside the main body 21, and the main body 21 is slidable on the guide shaft. Note that an enlarged diameter portion 24 is provided inside the main body 21. This enlarged diameter portion 24 is
1 functions so as not to catch foreign matter when sliding on the guide shaft. The outer wall portion 23 is provided outside the clutch release bearing 10 and serves as a radial movement restricting portion. Further, in order to make the clutch release bearing 10 movable in the radial direction, the outer periphery of the outer race 12 and the outer wall 2 are formed.
A gap 27 is formed between the inner periphery of No. 3 and the inner periphery of No. 3.

As shown in FIG. 1, a spring member 30 provided with two members having the same shape is provided with a clutch release bearing 10.
To the guide sleeve 20. FIG. 2 is a perspective view of the spring member 30. Spring member 3
0 is formed by punching a single spring steel plate such as SK5 with a press, bending the plate, and then performing a quenching process. The spring member 30 is provided between the base portion 31 and the pressing portion 32, the base portion 31 abutting on the flange portion 22 of the guide sleeve 20, the pressing portion 32 abutting on the outer ring 12 of the bearing, and the pressing portion 32. And a beam portion 33 for applying an elastic force for urging the outer ring 12. The pressing portion 32 has an inclined portion 32a that is inclined outward in the axial direction so as not to contact the seal 17 and to facilitate the assembly of the spring member 30.

Further, the spring member 30 is formed at the intersection of the base portion 31 and the beam portion 33 so as to protrude in the radial direction, and is fitted to the outer peripheral end of the flange portion 22 of the guide sleeve 20 in the radial direction. It has a part 34. Also, the base part 31
In the vicinity of the lower end of both side portions 31a, a notch 37 forming a recess is formed.
A relatively large notch 38 is formed in b. A chamfer 39 is formed at the intersection of the notch 38 and the lower edge 31b. The notch 38 is brought into contact with the step portion 22 a formed in the flange portion 22 so that the spring member 3
0 is attached to the flange 22. At that time, notch 3
7 is engaged with a projection (not shown) formed on the rear surface (the right surface in FIG. 1) of the flange portion 22, whereby the retaining is achieved.

Next, the operation of the clutch release bearing device according to the embodiment of the present invention will be described below. In FIG. 1, a release fork (not shown) pivots and abuts on an anvil portion (not shown) of a distal flange portion 22 thereof.
A constant load is applied to the left in the figure. Thereby, the clutch release bearing device slides in the axial direction on a guide shaft (not shown) to bring the contact portion 11a of the inner race 11 into contact with the diaphragm spring of the clutch cover (not shown). Even if the diaphragm spring is rotating, the inner ring 11 is rotatable, so that the inner ring 11 rotates together with the diaphragm spring after abutment, and further the bearing device moves in the axial direction, whereby the diaphragm spring is pressed and the clutch is pressed. It is to be operated.

Here, the spring member 30 has an appropriate plate thickness, and supports the clutch release bearing 10 with respect to the guide sleeve 20 only by the frictional force acting between the pressing portion 32 and the outer ring 12. Therefore, the bearing 10 is movable in the radial direction with respect to the guide sleeve 20. Therefore, when the contact portion 11a of the inner ring 11 contacts the diaphragm spring, if there is eccentricity between the two, an aligning force is generated to try to position the bearing 10 concentrically, whereby the bearing 10 is radially moved. Move and self-centering will be achieved. The spring member 30 holds the position of the bearing 10 after centering. The outer wall 23 of the guide sleeve 20 is
It has a function of restricting the bearing 10 from moving outward in the radial direction by a predetermined amount or more.

Next, a method of assembling the clutch release bearing device will be described. Body 21 of guide sleeve 20
After the clutch release bearing 10 is arranged around the outer periphery, the spring member 30 is moved radially outward from the guide sleeve 20.
Along the flange portion 22 of FIG. The spring member 30
Since the outer circumference can be inserted from one direction, assembly is easy. When the notch 38 comes into contact with the step 22a of the flange portion 22, the spring member 30 is set at a predetermined position. At this time, the notch 37 engages with a projection (not shown), and the assembly is completed.

According to the present embodiment, the notch 38 is
Since the state of contact with 2a can be visually recognized from the outside, it can be easily grasped whether or not the spring member 30 is attached at a fixed position. Further, since the outer ring 12 is made of a plate material formed by pressing, the weight and cost can be reduced by using, for example, a steel plate quenched after press forming, and sliding and vibration during alignment can be achieved. Also has the effect of suppressing wear due to

The present invention has been described with reference to the embodiments. However, the present invention should not be construed as being limited to the above embodiments, and it is needless to say that modifications and improvements can be made as appropriate. is there. For example, the number of the spring members 30 is three instead of two.
One.

[0021]

As described above, according to the present invention, one of the wheels is fixed and the other of the rotating wheels includes the inner and outer wheels which are concentrically arranged and rotate relative to each other. A clutch release bearing adapted to abut against a member, a cylindrical bearing portion slidably fitted on a guide shaft, and a resin bearing holding member comprising a flange portion; A coupling member for holding the one ring of the clutch release bearing so as to be movable in a radial direction, wherein the outer ring is made of a plate material formed by pressing, and the coupling member is Is composed of a spring member that sandwiches the bearing holding member and the outer ring by being inserted from the outside in the radial direction. Wood can easily grasp whether or attached in place. In addition, the outer ring is made of a plate material formed by pressing, and by using a steel plate or the like that is quenched after press forming, the weight and cost can be reduced, and wear due to sliding or vibration during alignment can be achieved. Is also effective. Further, since there is no need to form a disc spring engaging groove on the outer periphery of the bearing holding member, the bearing holding member can be formed by axial draw molding, thereby reducing costs. Further, the seal on the inner side of the bearing can be omitted, thereby further reducing the cost.

[Brief description of the drawings]

FIG. 1 is a sectional view of a clutch release bearing device according to an embodiment.

FIG. 2 is a perspective view of a spring member 30.

FIG. 3 is a cross-sectional view of a conventional clutch release bearing device.

[Explanation of symbols]

 Reference Signs List 10 clutch release bearing device 11 inner ring 12 outer ring 20 guide sleeve 30 spring member

Claims (1)

[Claims] 1. A clutch release bearing comprising an inner ring and an outer ring which are concentrically arranged and rotate relative to each other, one of which is fixed and the other of which rotates is in contact with a rotating member of a clutch device. And a cylindrical bearing part slidably fitted on a guide shaft, a resin-made bearing holding member having a flange part, and the one ring of the clutch release bearing having a radius relative to the bearing holding member. In a clutch release bearing device comprising a connecting member that is held so as to be movable in the direction, the outer ring is made of a plate material formed by pressing, and the connecting member is inserted from a radial outside. And a clutch release bearing device comprising a spring member for sandwiching the bearing holding member and the outer ring.