JP2010156402A - Clutch release bearing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clutch release bearing device reduced in manufacturing cost and enabling downsizing of a clutch device, because of fewer parts mounted therein. <P>SOLUTION: The clutch release bearing device 10 is equipped with: a first retaining member 40 equipped with a small diameter clutch release bearing 20, and a large diameter clutch release bearing 30, and fitted on the outer circumference of a sleeve 11 forming a guide shaft to axially slide; a first connection member 50 movably retaining the small diameter clutch release bearing 10 in the radial direction with respect to the first retaining member 40; a second retaining member 60 axially slidably fitted on an outer circumference of the first retaining member 40; and a second connection member 70 movably retaining the large diameter clutch release bearing 30 in the radial direction with respect to the second retaining member 60. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a clutch release bearing device, and more particularly to a clutch release bearing device for a double clutch device used in a double clutch transmission.

  In a clutch device using a friction plate mounted on a vehicle or the like, power transmission / reception is performed by pressing a diaphragm spring of a clutch cover in an axial direction with a shift fork as an input member. A clutch release bearing that allows relative rotation between the shift fork disposed on the fixed side of the vehicle body and the like and a diaphragm spring that is attached to a flywheel of the engine and rotates is provided.

  As a conventional double clutch device, an odd-numbered gear and an even-numbered gear clutch have large and small diameter clutch release bearings having different sizes on the same shaft, and the large diameter and small diameter clutch release bearings are clutches. Those that slide in the axial direction at the time of switching are known (see, for example, Patent Document 1).

JP 2002-174262 A

  However, the double clutch device described in Patent Document 1 includes large and small diameter clutch release bearings having different sizes, and each clutch release bearing has a front cover. Therefore, the structure is complicated and the manufacturing cost increases. In addition, a large installation space for the clutch release bearing is required, and it is difficult to reduce the size of the clutch device.

  The present invention has been made in view of the above-described circumstances, and a purpose thereof is a clutch release bearing device that can reduce the number of parts, reduce the manufacturing cost, and reduce the size of the clutch device. Is to provide.

The above object of the present invention can be achieved by the following constitution.
(1) An inner ring and an outer ring that are arranged concentrically and rotate relative to each other, one wheel is fixed, and the other wheel that rotates is in contact with the rotating member of the clutch device. A clutch release bearing device including a clutch release bearing, wherein the first holding member is fitted on the guide shaft so as to be axially slidable, and the clutch release bearing having a small diameter can be moved in the radial direction with respect to the first holding member. A first connecting member held on the outer periphery, a second holding member fitted on the outer periphery of the first holding member so as to be axially slidable, and a clutch release bearing having a large diameter with respect to the second holding member can be moved in the radial direction. A clutch release bearing device comprising: a second connecting member held on the clutch release member.
(2) The clutch release bearing device according to (1), wherein the first holding member and the second holding member are made of synthetic resin.

  According to the clutch release bearing device of the present invention, the first holding member that is fitted on the guide shaft so as to be slidable in the axial direction, and the clutch release bearing having a small diameter with respect to the first holding member are held so as to be movable in the radial direction. A first connecting member, a second holding member externally fitted to the outer periphery of the first holding member, and a clutch release bearing having a large diameter with respect to the second holding member so as to be movable in the radial direction. Therefore, one of the cover members required for each of the large-diameter and small-diameter clutch release bearings in the conventional double clutch device can be omitted. Thereby, since the number of parts can be reduced, manufacturing cost can be reduced. Moreover, since the installation space for one cover member can be eliminated, the clutch device can be downsized.

  Further, according to the clutch release bearing device of the present invention, since the first holding member and the second holding member are made of synthetic resin, excellent sliding characteristics can be obtained, and it can be easily formed into an arbitrary shape. Can do.

  Hereinafter, each embodiment of a clutch release bearing device according to the present invention will be described in detail with reference to the drawings.

(First embodiment)
First, a first embodiment of a clutch release bearing device according to the present invention will be described with reference to FIG. 1 is cut at a position passing through the second connecting member, and the upper portion is cut at a position passing through other than the second connecting member.

  As shown in FIG. 1, the clutch release bearing device 10 of the present embodiment is slidable in the axial direction on the outer periphery of a small diameter clutch release bearing 20, a large diameter clutch release bearing 30, and a sleeve 11 forming a guide shaft. A first holding member 40 that is externally fitted, a first connecting member 50 that holds the clutch release bearing 20 having a small diameter relative to the first holding member 40 so as to be movable in the radial direction, and an axial direction on the outer periphery of the first holding member 40 A second holding member 60 that is slidably fitted outside, and a pair of second connecting members 70 that hold the clutch release bearing 30 having a large diameter relative to the second holding member 60 so as to be movable in the radial direction.

  The small-diameter clutch release bearing 20 includes a plurality of inner ring 21 having a contact portion 21a with a diaphragm spring (not shown) at the left end, an outer ring 22, and a plurality of rolls disposed between the inner ring 21 and the outer ring 22. A ball 23, a cage 24 that holds the ball 23 at a predetermined interval so that it can roll, and seals 25, 26 that seal a bearing space defined by the inner ring 21 and the outer ring 22 on both axial sides of the ball 23, Is provided.

  The first holding member 40 is made of synthetic resin, and is fitted around the outer periphery of the sleeve 11 so as to be slidable in the axial direction, and in the vicinity of the axial end portion (left end portion in FIG. 1) of the cylindrical portion 41. A flange portion 42 extending radially outward from the outer periphery of the cylindrical portion, a small diameter portion 43 formed in an axially outer portion from the flange portion 42 of the cylindrical portion 41, and a circumferential groove formed in a root portion of the small diameter portion 43 44.

  The first connecting member 50 includes a base portion 51 that contacts the flange portion 42 of the first holding member 40, a pressing portion 52 that contacts the outer ring 22 of the small diameter clutch release bearing 20, and the base portion 51 and the pressing portion 52. And a beam portion 53 connecting the gaps in the axial direction. The first connecting member 50 is formed, for example, by punching a spring steel plate with a press, and then bending and quenching.

  And the disc spring 54 is arrange | positioned between the base part 51 of the 1st connection member 50, and the circumferential groove 44 of the 1st holding member 40, The 1st connection member 50 is urged | biased by the urging | biasing force of this disc spring 54 It is held by the first holding member 40. Further, in order to enable the small-diameter clutch release bearing 20 to move in the radial direction, a gap C <b> 1 is provided between the inner periphery of the base portion 51 of the first connecting member 50 and the outer periphery of the small-diameter portion 43 of the first holding member 40. It is done. As a result, the small-diameter clutch release bearing 20 can move in the radial direction by the gap C1.

  Accordingly, when the clutch is operated and the abutting portion 21a of the inner ring 21 abuts against a diaphragm spring (not shown), if both are eccentric, a centering force is generated in the small diameter clutch release bearing 20, and the small diameter clutch The release bearing 20 moves in the radial direction and is automatically aligned.

  The large-diameter clutch release bearing 30 includes a plurality of inner ring 31 having a contact portion 31a with a diaphragm spring (not shown) at the left end, an outer ring 32, and a plurality of rolls disposed between the inner ring 31 and the outer ring 32. A ball 33, a retainer 34 that holds the ball 33 at a predetermined interval so as to roll, and seals 35 and 36 that seal a bearing space defined by the inner ring 31 and the outer ring 32 on both sides in the axial direction of the ball 33, . A small-diameter clutch release bearing 20 is disposed on the radially inner side of the inner ring 31 of the large-diameter clutch release bearing 30.

  The second holding member 60 is made of synthetic resin, and has a cylindrical portion 61 that is fitted on the outer periphery of the cylindrical portion 41 of the first holding member 40 so as to be axially slidable, and a diameter from a substantially central portion of the cylindrical portion 61. A flange portion 62 extending outward in the direction, an outer wall portion 63 extending in the axial direction from the outer end portion of the flange portion 62, and a protruding portion 64 projecting radially outward from the flange portion 62 Have. Note that a metal anvil (not shown) may be embedded in the second holding member 60 in a contact portion with a fork member (not shown) to prevent wear.

  The outer wall 63 is provided outside the large-diameter clutch release bearing 30 and restricts the radial movement of the large-diameter clutch release bearing 30 held by the pair of second connecting members 70. In addition, a gap C <b> 2 is provided between the outer periphery of the outer ring 32 and the inner periphery of the outer wall portion 63 so that the large-diameter clutch release bearing 30 can be moved in the radial direction.

  The pair of second connecting members 70 are arranged at phases different from each other by 180 °, and as shown in FIG. 2, a base portion 71 that contacts the flange portion 62 of the second holding member 60, and a large-diameter clutch release bearing. The position corresponding to the projection part 64 of the 2nd holding member 60 of the spring part 72 which contact | abuts the outer ring | wheel 32 of 30, the beam part 73 which connects between the base part 71 and the spring part 72 to an axial direction, and the beam part 73 And a recess 74 into which the protrusion 64 is fitted. The second connecting member 70 is formed, for example, by punching a spring steel plate with a press, and then bending and quenching.

  The pair of second connecting members 70 sandwich the flange portion 62 of the second holding member 60 and the outer ring 32 of the large diameter clutch release bearing 30 between the base portion 71 and the spring portion 72. The clutch release bearing 30 is held by the second holding member 60 by the urging force of the pair of second connecting members 70. That is, the pair of second connecting members 70 holds the large-diameter clutch release bearing 30 with respect to the second holding member 60 only by the frictional force between the spring portion 72 and the outer ring 32. The clutch release bearing 30 can move in the radial direction by the gap C2.

  Therefore, when the clutch is operated and the contact portion 31a of the inner ring 31 is in contact with a diaphragm spring (not shown), if both are eccentric, a centering force is generated in the large-diameter clutch release bearing 30 and the large diameter is increased. The clutch release bearing 30 moves in the radial direction and is automatically aligned.

  As described above, according to the clutch release bearing device 10 of the present embodiment, the first holding member 40 that is fitted on the outer periphery of the sleeve 11 so as to be slidable in the axial direction, and the first holding member 40 has a small diameter. A first connection member 50 that holds the clutch release bearing 20 in a radially movable manner, a second holding member 60 that is fitted on the outer periphery of the first holding member 40 so as to be axially slidable, and a second holding member 60. And a pair of second connecting members 70 that hold the clutch release bearing 30 having a large diameter so as to be movable in the radial direction. Therefore, it is necessary for each of the large and small diameter clutch release bearings in the conventional double clutch device. One of the existing cover members can be omitted. Thereby, since the number of parts can be reduced, manufacturing cost can be reduced. Moreover, since the installation space for one cover member can be eliminated, the clutch device can be downsized.

  Further, according to the clutch release bearing device 10 of the present embodiment, since the first holding member 40 and the second holding member 60 are formed of synthetic resin, excellent sliding characteristics can be obtained and easy to an arbitrary shape. Can be molded.

(Second Embodiment)
Next, a second embodiment of the clutch release bearing device according to the present invention will be described with reference to FIG. Note that portions that are the same as or equivalent to those of the first embodiment are denoted by the same reference numerals in the drawings, and description thereof is omitted or simplified.

  The second holding member 80 of the present embodiment is made of synthetic resin, and as shown in FIG. 3, a cylindrical portion 81 that is fitted on the outer periphery of the cylindrical portion 41 of the first holding member 40 so as to be axially slidable. And a flange portion 82 extending radially outward from a substantially central portion of the cylindrical portion 81.

  As shown in FIG. 3, the second connecting member 90 of the present embodiment has a base 91 that contacts the flange 82 of the second holding member 80 and a pressing device 95 on the outer ring 32 of the large-diameter clutch release bearing 30. A pressing portion 92 that is in contact with each other, a beam portion 93 that connects the base portion 91 and the pressing portion 92 in the axial direction, and a base portion 91 side of the beam portion 93, and is formed on the outer end portion of the flange portion 82. And a recessed portion 94 to be externally fitted. The second connecting member 90 is formed, for example, by punching a spring steel plate with a press, and then bending and quenching.

  The pressing device 95 is a self-aligning spring and is disposed between the pressing portion 92 of the second connecting member 90 and the outer ring 32 of the large-diameter clutch release bearing 30 and presses the outer ring 32 toward the flange portion 82 side. To do. Thereby, the large-diameter clutch release bearing 30 is held by the second holding member 80 by the pressing force of the pressing device 95. In addition, a gap C <b> 2 is provided between the outer periphery of the outer ring 32 and the inner periphery of the beam portion 93 so that the large-diameter clutch release bearing 30 can be moved in the radial direction.

As described above, according to the clutch release bearing device 10 of the present embodiment, the first holding member 40 that is fitted on the outer periphery of the sleeve 11 so as to be slidable in the axial direction, and the first holding member 40 has a small diameter. A first connecting member 50 that holds the clutch release bearing 20 in a radially movable manner, a second holding member 80 that is fitted on the outer periphery of the first holding member 40 so as to be axially slidable, and a second holding member 80. The second connecting member 90 that holds the large-diameter clutch release bearing 30 so as to be movable in the radial direction is required for each of the large-diameter and small-diameter clutch release bearings in the conventional double clutch device. One of the cover members can be omitted. Thereby, since the number of parts can be reduced, manufacturing cost can be reduced. Moreover, since the installation space for one cover member can be eliminated, the clutch device can be downsized.
About another structure and an effect, it is the same as that of the said 1st Embodiment.

It is sectional drawing for demonstrating 1st Embodiment of the clutch release bearing apparatus which concerns on this invention. It is a perspective view for demonstrating the 2nd connection member shown in FIG. It is sectional drawing for demonstrating 2nd Embodiment of the clutch release bearing apparatus which concerns on this invention.

Explanation of symbols

10 Clutch release bearing device 11 Sleeve (guide shaft)
20 small diameter clutch release bearing 30 large diameter clutch release bearing 40 first holding member 50 first connecting member 60 second holding member 70 second connecting member 80 second holding member 90 second connecting member

Claims (2)

Large-diameter and small-diameter clutch release bearings that are arranged concentrically and have inner and outer rings that rotate relative to each other, one of which is fixed and the other wheel that rotates is in contact with the rotating member of the clutch device. A clutch release bearing device comprising:
A first holding member fitted on the guide shaft so as to be axially slidable;
A first connecting member for holding the small-diameter clutch release bearing so as to be movable in a radial direction with respect to the first holding member;
A second holding member fitted on the outer periphery of the first holding member so as to be axially slidable;
A clutch release bearing device, comprising: a second connecting member that holds the large-diameter clutch release bearing so as to be movable in a radial direction with respect to the second holding member.   The clutch release bearing device according to claim 1, wherein the first holding member and the second holding member are made of synthetic resin.

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