JP2011153665A - Clutch release bearing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clutch release bearing device for general use, which can be used for even a vehicle different in dimension between an abutment surface of a release fork and an abutment surface of a diaphragm spring and a vehicle different in the release fork guide width. <P>SOLUTION: This clutch release bearing device is characterized by attaching a pair of attachments between a bearing holding member and a reinforcing panel so as to change the dimension between an abutment surface of a release fork and an abutment surface of a rotating member of a clutch device and so as to change the release fork guide width. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a clutch release bearing device used in a vehicle or the like.

  When operating a clutch, which is a power interrupting device mounted on a vehicle or the like, using a friction plate, the diaphragm spring of the clutch cover is pressed in the axial direction with a release fork as an input member, thereby reducing the biasing force of the spring to the friction plate. The power transmission is disconnected by releasing from the above.

  By the way, the release fork is usually arranged on the fixed side of the vehicle body or the like, but the clutch cover is attached to a flywheel or the like of the engine and rotates integrally therewith. Therefore, when the release fork directly presses the diaphragm spring of the clutch cover, wear of the contact portion is caused. Therefore, a clutch release bearing including a rotating wheel that contacts the diaphragm spring and rotates integrally, and a non-rotating bearing holding member configured to hold the bearing in a predetermined state and receive an input from the release fork, A clutch release bearing device is provided between the diaphragm spring and the release fork. (See Patent Document 1)

  In the clutch release bearing device disclosed in Patent Document 1, the front end portion of the inner ring of the bearing faces the diaphragm spring. On the other hand, the rear end of the outer ring of the bearing is in contact with the flange portion of the guide sleeve. Further, the bearing is attached to the guide sleeve so that the outer ring of the bearing and the flange portion are sandwiched in the axial direction by a leaf spring. When the flange portion of the guide sleeve is pushed from behind by the front end of the release fork via the reinforcing member, the entire bearing device can be moved in the axial direction so that the inner ring front end portion comes into contact with the diaphragm spring.

  Here, since the bearing outer ring is urged by a leaf spring so as to be movable in the radial direction with respect to the flange portion of the guide sleeve, the flange portion of the guide sleeve is pushed by the release fork from the rear, and the outer ring of the bearing is When the bearings abut against the diaphragm spring of the clutch, the bearings are automatically aligned even if there is an eccentricity between them.

JP 09-137837 A

  By the way, although the clutch release bearing device can be functionally mounted on various vehicles, the size of the mounting relationship differs depending on the individual vehicle, so the same clutch release bearing device is mounted on various vehicles as it is. It is difficult. Therefore, some adjustment is required between the clutch release bearing device and the vehicle on which it is mounted.

  In such a case, it is usually difficult to change the design of the vehicle in accordance with the dimensions of the clutch release bearing device. Therefore, it is a common practice to change the dimensions of each part of the clutch release bearing device in accordance with the vehicle on which the clutch release bearing device is mounted.

  As an example of the dimension adjustment described above, in the clutch release bearing device, there is a case where it is required to increase the dimension between the contact surface of the release fork and the contact surface of the diaphragm spring.

  According to the prior art, this requirement has been addressed by increasing the axial length of the bearing inner ring. However, such an inner ring is formed by deep drawing, and it may be difficult to form an inner ring having an axial length greater than a certain value by deep drawing. If the inner ring cannot be formed by deep drawing, for example, a cylindrical material can be formed by cutting or the like, which greatly increases the manufacturing cost.

  On the other hand, in order to increase the dimension between the contact surface of the release fork and the contact surface of the diaphragm spring, for example, it may be sufficient to increase the thickness of the flange portion of the guide sleeve. However, when the guide sleeve is formed by a resin mold, if the thickness of a part of the guide sleeve is increased, non-uniform shrinkage of the material is caused at the time of molding, and as a result, voids (voids) are formed inside the thick portion. Occurring and reducing the quality and strength.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a clutch release bearing device that is highly adaptable to a vehicle while keeping costs low. More specifically, a clutch release bearing device that can be used universally even for vehicles having different dimensions between the contact surface of the release fork and the contact surface of the diaphragm spring or vehicles having different release fork guide widths. The purpose is to provide.

  In order to achieve the above object, a clutch release bearing device of the present invention includes an inner ring and an outer ring that are concentrically arranged and relatively rotate, one ring is fixed, and the other wheel that rotates is a rotating member of the clutch device. A clutch release bearing that comes into contact with the bearing, a bearing holding member that includes a cylindrical portion and a flange portion slidably fitted on the guide shaft, and a reinforcing member that comes into contact with the release fork and receives a load. A clutch release bearing device comprising a connecting member for holding the one ring of the clutch release bearing so as to be movable in a radial direction with respect to a flange portion of the bearing holding member. A pair of attachments for changing the dimension between the contact surface of the rotating member of the clutch device and the release fork guide width is the bearing holding Characterized in that mounted between the the wood reinforcing plate.

  According to the present invention, by attaching an attachment to the clutch release bearing device, a vehicle having a different dimension between the contact surface of the release fork and the contact surface of the diaphragm spring or a vehicle having a different release fork guide width can be used. The same clutch release bearing device can be used. That is, by preparing an attachment suitable for each vehicle with respect to one type of clutch release bearing device, it can be applied to many types of vehicles. Therefore, cost reduction can be expected due to the quantity effect of the clutch release bearing excluding the attachment. Further, since there is no need to newly install an inner ring or a guide sleeve as in the prior art, a new assembly jig associated therewith is also unnecessary.

It is sectional drawing shown in the state which assembled | attached the clutch release bearing apparatus which is embodiment of this invention to the clutch apparatus. It is a figure of the clutch release bearing device which is this Embodiment which has not attached the attachment. It is the axial sectional view which cut | disconnected the structure of FIG. 2 along the XX line, and was seen in the arrow direction. It is a figure of the clutch release bearing device which is this Embodiment which attached the attachment. FIG. 5 is an axial cross-sectional view of the configuration of FIG. 4 taken along line YY and viewed in the direction of the arrow. It is a perspective view of a spring member. It is a figure of an attachment. It is a figure of other engagement types.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view showing a state in which a clutch release bearing device according to an embodiment of the present invention is assembled to a clutch device. In FIG. 1, the clutch device mainly includes a clutch cover assembly 1 and a clutch disk 2.

  In a clutch housing 60 attached to an engine (not shown), the clutch cover assembly 1 includes a clutch cover 5 fixed to a flywheel 4 connected to a rear end of a crankshaft 61 (left side in FIG. 1), a clutch A pressure plate 6 and a diaphragm spring 7 are arranged inside the cover 5. The diaphragm spring 7 is supported by the clutch cover 5 at the center in the radial direction, and the vicinity of the outer peripheral edge presses the pressure plate 6 to the flywheel 4 side. Further, the diaphragm spring 7 is provided with a radial slit from a radially intermediate portion to an inner peripheral portion, and the inner peripheral end portion 7 a is in contact with the clutch release bearing device 3.

  The clutch disk 2 is configured such that a friction facing 2a, which is an outer peripheral portion, is sandwiched between the flywheel 4 and the pressure plate 6. A main drive shaft 9 on the transmission side is spline-engaged with the center of the clutch disk 2.

  A transmission (not shown) is disposed behind the clutch housing 60 (on the right side in FIG. 1). A rear portion of the main drive shaft 9 that is spline-engaged with the clutch disk 2 extends into the transmission. The clutch release bearing device 3 is arranged around the guide shaft 9 </ b> A and is arranged so as to be movable in the axial direction by being pushed by the release fork 8.

  2 and 4 show the clutch release bearing device 3 of the present embodiment. FIG. 2 shows the clutch release bearing device 3 with no attachment 50 attached, and FIG. 4 shows the clutch release bearing device 3 with the attachment 50 attached. Yes. 3 is an axial sectional view of the configuration of FIG. 2 cut along the line XX and viewed in the direction of the arrow, and FIG. 5 is a diagram of the configuration of FIG. 4 cut along the line YY. FIG. 6 is a cross-sectional view in the axial direction as viewed in the direction of the arrow, and the same components as those in FIG.

  The clutch release bearing device 3 of the present embodiment includes a clutch release bearing 10, a guide sleeve 20 that is a bearing holding member, a spring member 30 that is a connecting member, a reinforcing member 40, and an attachment 50 that is used as necessary. Become.

  The clutch release bearing 10 is rolled between a substantially circular inner ring 11 having a contact portion 11 a that contacts a diaphragm spring, a circular outer ring 12 concentrically including the inner ring 11, and the inner ring 11 and the outer ring 12. A plurality of balls 15 that are movably disposed; a cage 16 that holds the balls 15 at predetermined intervals; and a seal 17 that seals a space defined by the inner ring 11 and the outer ring 12 on both sides in the axial direction of the balls 15; 18 and. The inner ring 11 is rotatably supported with respect to the outer ring 12. Further, the abutting portion 11 a of the inner ring 11 abuts on the diaphragm spring 7 of the clutch cover 5.

  The guide sleeve 20 is made of molded resin, and includes a cylindrical portion 21, a flange portion 22 that extends in the radial direction from the outer periphery near the center of the cylindrical portion 21, and an axial clutch from the radial outer periphery of the flange portion 22. A restricting portion 23 extending to the release 10 side is formed. A guide shaft 9A extends inside the cylindrical portion 21, and the cylindrical portion 21 is slidable on the guide shaft 9A. An enlarged diameter portion 24 is provided inside the cylindrical portion 21. The enlarged diameter portion 24 functions to prevent foreign matter from being caught when the cylindrical portion 21 slides on the guide shaft 9A. The restricting portion 23 functions as a stopper that restricts the clutch release bearing 10 from moving in the radial direction by a predetermined amount or more. The restricting portion 23 is configured to allow the clutch release bearing 10 to move in the radial direction by a predetermined amount. A gap 27 corresponding to a predetermined amount is formed between the outer ring 12 and the outer ring 12. Further, the flange portion 22 has a pair of protrusions 22c protruding toward the axial anti-clutch release bearing 10 in order to fix the spring member 30 to each of the attachment portions of the spring member 30 at two locations, and positioning of the spring member 30. In order to do this, a stopper 22g protruding toward the axial release fork 8 and an outward projection 22h extending in the radial direction are provided as an engaging portion for fixing the attachment 50 to each of two attachment portions 50 of the attachment 50. A protrusion 22d is provided to protrude toward a certain axial release fork 8 side.

  The two spring members 30 having the same shape have a function of attaching the clutch release bearing 10 to the guide sleeve 20. FIG. 6 is a perspective view of the spring member 30. The spring member 30 is formed by punching a sheet of spring steel such as SK5 with a press, bending it, and then quenching it. The spring member 30 is provided between the base portion 31 that contacts the flange portion 22 of the guide sleeve 20, the pressing portion 32 that contacts the outer ring 12 of the clutch release bearing 10, and the base portion 31 and the pressing portion 32. It consists of a beam portion 33 for applying an elastic force for urging the outer ring 12 to the portion 32. The pressing portion 32 has an inclined portion 32a inclined outward so as not to contact the seal 17 and to facilitate the assembly of the spring member 30.

  Further, the spring member 30 has a convex portion 34 formed so as to protrude in the radial direction substantially in the middle of the beam portion 33, and the convex portion 34 is formed on the outer protrusion 22 h of the flange portion 22 of the guide sleeve 20. Is engaged. Further, a notch 37 is formed in the vicinity of the lower end of both side portions 31a of the base portion 31, and a relatively large notch 38 is formed at the lower edge portion 31b. A chamfer 39 is formed at the intersection of the notch 38 and the lower edge 31b.

  When the spring member 30 is assembled, the two spring members 30 are inserted from the diagonally upper right side and the diagonally lower right side of FIG. Since the spring member 30 can be inserted from one direction of the outer periphery, the assembly is easy. The spring member 30 climbs over a pair of protrusions 22 c provided on the flange portion 22 of the guide sleeve 20 while being elastically deformed, the notch 37 engages with the protrusion 22 c, and the notch 38 is the flange portion 22 of the guide sleeve 20. Assembling is completed by abutting against the stopper 22g provided on the surface.

  The reinforcing member 40 has a function of receiving a load applied from the release fork 8, and includes a cylindrical portion 41 and a disc portion 42 connected to the cylindrical portion 41, as shown in FIGS. It is formed by pressing a relatively thick plate and then quenching.

  The anvil portion 43 that comes into contact with the release fork 8 is a flat surface that protrudes toward the axial release fork 8, and the dimension between the inner ring 11 and the contact portion 11 a is that of the release fork 8 required for the target vehicle. The dimension L1 is between the contact surface and the contact surface of the diaphragm spring 7.

  Both side surfaces of the cylindrical portion 41 facing the anvil portion 43 are guide surfaces 44 of the release fork 8, and are planes perpendicular to the anvil portion 43. The width between the guide surfaces 44 is the release fork guide width W1 required for the target vehicle. On the other hand, both side surfaces of the cylindrical portion 41 that is 90 degrees out of phase with respect to the axis from the anvil portion 43 have an inner diameter that fits just to the cylindrical portion 21 when attached to the guide sleeve 20, thereby reinforcing A radial positioning of the member 40 is achieved.

  The attachment 50 is shown in FIG. The attachment 50 is used to change the dimension between the contact surface of the release fork and the contact surface of the diaphragm spring and the guide width of the release fork. If necessary, the attachment 50 has several dimensions corresponding to each vehicle type. Prepare things. The dimension between the contact surface of the release fork and the contact surface of the diaphragm spring is determined by the dimension L * in FIG. 7A, and the guide width of the release fork is determined by the dimension W * in FIG.

  The attachment 50 includes a base portion 51a inserted and fixed between the guide sleeve 20 and the reinforcing member 40, a beam portion 52 that comes into contact with the reinforcing member 40 and is positioned in the radial direction, an anvil portion 53 with which the release fork contacts, and a release. It consists of a guide portion 54 that is a guide surface of the fork. The base portion is formed with a notch 55 that engages with the protrusion 22d of the guide sleeve 20, and the lower end of the base portion is provided with a surface push 56 in a tapered shape so that the protrusion 22d can be easily climbed over. .

  When assembling the attachment 50, two attachments 50 of the same size are inserted from the upper right and lower sides of FIG. The attachment 50 climbs over the protrusion 22d provided on the flange portion 22 of the guide sleeve 20 while being elastically deformed, and the notch 55 engages with the protrusion 22d, whereby the attachment is completed.

  In addition to the above-mentioned shape, the engaging portion between the attachment 50 and the guide sleeve 20 is elastically deformed so that the base portion 51b extends left and right with respect to the protrusion 22d as shown in FIG. As shown in FIG. 4B, a member that elastically deforms so that the base portion 51c narrows inward with respect to the two protrusions 22d may be employed. FIG. 7B and FIG. 7C show only the base portions 51b and 51c of the attachment.

  Further, as shown in FIG. 8, the flange portion of the guide sleeve is provided with a recess 22e instead of the protrusion 22d as an engaging portion for fixing the attachment 50, and a part of the base portion 51d is bent and raised to the guide sleeve side 20. Accordingly, the claw portion 57 that engages with the recess 22e may be formed.

  In addition, the engagement type is not particularly limited, and various known engagement types using elastic deformation can be employed.

  The attachment 50 is formed by pressing a relatively thick plate and then quenching, as with the reinforcing member 40. In order to allow elastic deformation during assembly, the attachment 50 is elastic in the employed engagement type. Heat treatment is performed only in an appropriate range so as not to prevent deformation.

  By attaching the attachment, the dimension L1 between the contact surface of the release fork and the contact surface of the diaphragm spring can be easily changed to L2, as shown in FIGS. The width W1 can be easily changed to W2.

  The present invention has been described above with reference to the embodiments. However, the present invention should not be construed as being limited to the above-described embodiments, and can be modified or improved as appropriate.

  It can be used as a clutch release bearing device.

1 Clutch cover assembly
2 Clutch disc
2a Friction facing
3 Clutch release bearing device
4 Flywheel
5 Clutch cover
6 Pressure plate
7 Diaphragm spring
7a Inner edge
8 Release fork
9 Main drive shaft
9A guide shaft
10 Clutch release bearing
11 Inner ring
11a Contact part
12 Outer ring
15 balls
16 Cage
17 Seal
18 Seal
20 Guide sleeve
21 Cylindrical part
22 Flange
22c protrusion
22d protrusion
22e recess
22g stopper
22h Outward protrusion
23 Restrictions
24 Expanded part
27 Clearance
30 Spring member
31 Base part
31a Both sides
31b Lower edge
32 Pressing part
32a Slope
33 Beam
34 Convex
37 Notch
38 Notch
39 Chamfer
40 Reinforcement member
41 Cylindrical part
42 disc
43 Anvil Club
44 Guide surface
50 attachments
51a Base part
51b Base part
51c Base part
51d base
52 Beam
53 Anvil Club
54 Guide section
55 Notch
56 Face pressing
57 Claw
60 Clutch housing
61 Crankshaft

Claims (1)

A clutch release bearing that includes an inner ring and an outer ring that are arranged concentrically and rotate relative to each other, one of the rings is fixed, and the other ring that rotates is in contact with a rotating member of the clutch device;
A bearing holding member having a cylindrical portion and a flange portion slidably fitted on the guide shaft, a reinforcing member that comes into contact with the release fork and receives a load, and a flange portion of the bearing holding member In a clutch release bearing device comprising a connecting member that holds the one ring of the clutch release bearing so as to be movable in the radial direction, the contact surface of the release fork and the contact surface of the rotating member of the clutch device A clutch release bearing device, characterized in that a pair of attachments for changing the dimensions between them and the release fork guide width are attached between the bearing holding member and the reinforcing plate.

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