JP2005188528A - Clutch release bearing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clutch release bearing device capable of properly receiving input from an input member and holding a bearing with proper force. <P>SOLUTION: A spring member 30 has a plate thickness smaller than that of a reinforcing plate 40, and its resilient force is used for holding an inner ring flange portion 11a and a flange portion 22 in the axial direction. The reinforcing plate 40 with its plate thickness increased to secure the rigidity can properly receive input from a release fork. On the other hand, the plate thickness of the spring member can be adjusted independently of the rigidity of the reinforcing plate 40, and so the resilient force of the spring member 30 can be optimized for properly holding the inner ring flange portion 11a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

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

  When operating a clutch that is a power interrupting device mounted on a vehicle or the like using a friction plate, the spring force of the spring is pressed by pressing the diaphragm spring of the clutch cover in the axial direction with a release fork that is a release force input member. Is released from the friction plate to disconnect the power transmission.

By the way, the release fork is usually arranged on the fixed side of the transmission or the like, but the clutch cover is attached to the 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 abuts on 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 a diaphragm spring and a release fork (see Patent Document 1).
Japanese Utility Model Publication No. 56-7124

  Here, in the clutch release bearing device described in Patent Document 1, the inner ring, that is, the inner ring is fixed so as to be movable in the direction perpendicular to the axis by the elastic force of the tightening branch extending from the outer edge of the friction plate. On the other hand, the friction plate can receive input from the release fork. However, in order to appropriately receive an excessive input from the release fork, it is necessary to increase the thickness of the friction plate to improve its rigidity. However, when the thickness of the friction plate is increased, the elastic force of the tightening branch is also increased, and the movement of the inner ring in the direction perpendicular to the axis may be fixed. On the other hand, if the thickness of the friction plate is reduced, the elastic force of the tightening branch becomes appropriate, but there arises a problem that the deformation of the friction plate becomes too large with respect to the input of the release fork.

  The present invention has been made in view of the problems of the prior art, and provides a clutch release bearing device that can appropriately receive an input from an input member and can hold the bearing with an appropriate force. With the goal.

In order to achieve the above object, the clutch release bearing device of the present invention comprises:
A clutch release bearing that includes an inner ring and an outer ring that are concentrically arranged and relatively rotate, the inner ring is fixed, and the rotating outer ring is in contact with a rotating member of the clutch device; and a slide on the guide shaft A bearing holding member having a movable body and a fixed flange portion, and a coupling member for holding the inner ring of the clutch release bearing so as to be movable in the radial direction with respect to the bearing holding member; In a clutch release bearing device comprising a reinforcing plate that receives an input load from an input member and transmits the load to the bearing holding member,
The inner ring has an inner ring flange portion extending in a radial direction, the connecting member has a plate thickness different from that of the reinforcing plate, and the inner ring flange portion and the fixed flange portion are axially connected to each other by their elastic force. It is characterized by being clamped in the direction.

  According to the clutch release bearing device of the present invention, the inner ring has an inner ring flange portion extending in a radial direction, the connecting member has a plate thickness different from that of the reinforcing plate, and the inner ring flange portion and the Since the fixing flange portion is clamped in the axial direction by its elastic force, the rigidity of the reinforcing plate is ensured by increasing the thickness of the reinforcing plate, and input from the input member is appropriately performed. On the other hand, since the plate thickness of the connecting member can be adjusted independently of the rigidity of the reinforcing plate, the elastic force of the connecting member is optimized and the inner ring flange portion is appropriately pressed. be able to.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a view of the clutch release bearing device of the present embodiment as viewed from the release fork side. FIG. 2 is an axial sectional view of the configuration of FIG. 1 taken along the line II-II and viewed in the direction of the arrow. FIG. 3 is a perspective view of a spring member that is a connecting member.

  In FIG. 2, the clutch release bearing device 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, and a reinforcing plate 40. The clutch release bearing 10 includes an outer ring 12 having an outer ring flange portion 12a extending radially inward at the left end in FIG. 2, and an inner ring flange portion 11a extending radially outward at the right end in FIG. An inner ring 11 provided concentrically with the outer ring 12, a plurality of balls 15 that are arranged to roll between the inner ring 11 and the outer ring 12, and a cage 16 that holds the balls 15 at predetermined intervals. Consists of. A seal member may be provided between the inner ring 11 and the outer ring 12.

  On the other hand, the guide sleeve 20 is made of molded resin and has a tubular main body 21 and a flange portion (fixed flange portion) 22 extending in the radial direction from the outer periphery near the center of the main body 21. A guide shaft (not shown) extends inside the main body 21, and the main body 21 is slidable around it. An enlarged diameter portion 24 is provided inside the main body 21. The enlarged diameter portion 24 functions so as not to bite foreign matter when the main body 21 slides.

  As is clear from FIGS. 1 and 2, the three spring members 30 having the same shape have a function of attaching the clutch release bearing 10 to the guide sleeve 20. In FIG. 3, the spring member 30 is formed by punching out a single spring steel plate 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 of the guide sleeve 20, the pressing portion 32 that contacts the outer ring 12 of the bearing, 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 flange portion 11a. The pressing portion 32 has an inclined portion 32a that is inclined outward to facilitate the assembly of the spring member 30. A notch 37 is formed in the vicinity of the lower end on both sides of the base portion 31, and a rectangular opening 36 is formed in the center of the base portion 31.

  In FIG. 1, a reinforcing plate 40 includes a cylindrical portion 41 and a disc-shaped anvil portion 42 connected to the cylindrical portion 41, and is formed by pressing a relatively thick plate and then quenching. Is done. Thereby, remarkable wear does not occur at the contact portion with the release fork as the input member. Moreover, remarkable wear can be prevented by coating the anvil part 42 with titanium or the like. The cylindrical portion 41 has an inner diameter that just fits into the main body 21 when attached to the guide sleeve 20, whereby radial positioning of the reinforcing plate 40 is achieved.

  When assembling the clutch release bearing device, the clutch release bearing 10 and the reinforcing plate 40 are arranged around the main body 21 of the guide sleeve 20, and then from the diagonally upper right, diagonally lower right, and left center of FIG. Three spring members 30 are inserted. 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 the axial protrusion 22c provided on the flange portion 22 of the guide sleeve 20 while elastically deforming, the notch 37 engages with the protrusion 22c, and the opening 36 extends to the flange portion 22 of the guide sleeve 20. Assembly is completed by abutting against the provided stopper 22g.

  Next, operations of the clutch device and the clutch release bearing device according to the embodiment of the present invention will be described below. When the driver steps on the clutch pedal, a release fork (not shown) pivots, and the tip of the release fork abuts on the anvil portion 42 of the reinforcing plate 40 of the clutch release bearing device to apply a constant load. Since the reinforcing plate 40 is relatively thick and sufficiently rigid, it can support a large load received from the release fork. The release fork and the anvil portion 42 are in sliding contact with each other. However, since the anvil portion 42 is coated with titanium or the like or hardened as described above, wear is suppressed to a small level.

  In FIG. 2, the clutch release bearing device slides in the axial direction on the guide shaft in response to an input from the release fork, and the outer ring flange portion of the outer ring 12 is supported by a diaphragm spring (rotating member of the clutch device) supported by the clutch cover. 12a is brought into contact. Even if the diaphragm spring is rotating, the outer ring 12 is freely rotatable, and thus rotates integrally with the diaphragm spring after contact. Further, when the bearing device moves in the axial direction, the diaphragm spring is pressed, and power transmission from the engine to the transmission is interrupted, that is, a clutch operation is performed.

  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 a frictional force acting between the pressing portion 32, the inner ring flange portion 11a, and the flange portion 22. Therefore, the clutch release bearing 10 is movable in the radial direction with respect to the guide sleeve 20. Therefore, when the outer ring flange portion 12a of the outer ring 12 is in contact with the diaphragm spring, if there is an eccentricity between the two, a known force is generated to cause the clutch release bearing 10 to be located concentrically, thereby causing the clutch release bearing. 10 moves in the radial direction, and self-alignment is achieved.

  According to the present embodiment, the spring member 30 has a thickness smaller than that of the reinforcing plate 40, and the inner ring flange portion 11a and the flange portion 22 are sandwiched in the axial direction by the elastic force. By increasing the thickness of the reinforcing plate 40, the rigidity can be ensured and input from the release fork can be appropriately received. On the other hand, since the plate thickness of the spring member can be adjusted independently of the rigidity of the reinforcing plate 40, the elastic force of the spring member 30 can be optimized and the inner ring flange portion 11a can be appropriately pressed.

  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. Four or more spring members 30 may be provided.

It is the figure which looked at the clutch release bearing device which is this Embodiment from the release fork side. It is the axial sectional view which cut | disconnected the structure of FIG. 1 along the II-II line, and was seen in the arrow direction. It is a perspective view of a spring member.

Explanation of symbols

10 Clutch release bearing 20 Guide sleeve 30 Spring member 40 Reinforcing plate

Claims (2)

A clutch release bearing that includes an inner ring and an outer ring that are concentrically arranged and relatively rotate, the inner ring is fixed, and the rotating outer ring is in contact with a rotating member of the clutch device; and a slide on the guide shaft A bearing holding member having a movable body and a fixed flange portion, and a coupling member for holding the inner ring of the clutch release bearing so as to be movable in the radial direction with respect to the bearing holding member; In a clutch release bearing device comprising a reinforcing plate that receives an input load from an input member and transmits the load to the bearing holding member,
The inner ring has an inner ring flange portion extending in a radial direction, the connecting member has a plate thickness different from that of the reinforcing plate, and the inner ring flange portion and the fixed flange portion are axially connected to each other by their elastic force. A clutch release bearing device characterized in that the clutch release bearing device is sandwiched in a direction. The clutch release bearing device according to claim 1, wherein a plurality of the connecting members are provided in a circumferential direction of the clutch release bearing device.

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