JP2001355652A - Self-aligning type clutch release bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a self-aligning type clutch release bearing good in holding performance of a bearing, simple in structure, light, and easy to be assembled. SOLUTION: A spring hole 14 is formed axially on a disc part 13 of a hub iron core 2. A guide notch 15 in parallel to the spring hole is formed on a collar part of a resin sleeve 1 or on a circumference of the disc part, 2b. One end 3a is inserted from the disc part, side of the spring hole to the middle of the collar part for being bent outward of the disc part next to the end and for being bent to the bearing side to engage with the guide notch. A wire spring 3 having the other end 3d bent is arranged such that either an inner ring 4 or an outer ring 5 abutted on the other end 11b of the collar part is sandwiched and energized on the collar side. An abutting face 3f of the inner ring or the outer ring of the wire spring is non-skid-treated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction clutch for connecting and disconnecting power between an engine and a transmission, which is used as a thrust load receiver. The present invention relates to an improvement in a self-aligning clutch release bearing capable of absorbing the pressure.

[0002]

2. Description of the Related Art As shown in FIG. 10, a self-aligning clutch release bearing includes a release hub 53 slidable in an axial direction on an outer periphery 52a of a retainer 52 protruding from a transmission device 51, and a release hub 53 outside the release hub 53. It is composed of a release bearing 54 provided at the end. The release hub 53 is moved by a release fork 55 to a diaphragm spring 56 that is moved back and forth in the axial direction and is rotated by an inner ring or an outer ring (in FIG.
a) is brought into contact, and the clutch is connected / disconnected. Since the release hub 53 and the rotating diaphragm spring 56 are in contact with each other via the release bearing 54, the rotation of the diaphragm spring is not transmitted to the release hub. Reference numeral 57 denotes a pressure plate, 58 denotes a diaphragm clutch cover, 59 denotes a flywheel, 6
Reference numeral 0 denotes a clutch disk (disk-shaped friction plate), 61 denotes a crankshaft, and 62 denotes a main drive shaft. In such a clutch release device, it is difficult to accurately assemble and match the rotation center line of the release bearing with the rotation center line of the diaphragm spring.

[0003]

Therefore, for example, in Japanese Patent Laid-Open Publication No. Hei 8-184329, as shown in FIG. 11, a release hub 63 is provided with a resin sleeve 71 having a shaft hole 1a and a flange portion 11, and a flange of the resin sleeve. The hub iron core 72 having the hollow hole 2a connected to the shaft hole and being larger than the shaft hole, which is integrally assembled with the one end 11a of the portion, is attached to the outer circumference 1
The end portion 73a of the cover 73 provided on 1c is swaged with the hub iron core outer periphery 72a. On the other hand, by assembling the end portion of the outer ring 75 of the release bearing so as to abut the flange portion 11 and the other end thereof to sandwich the outer ring with the other end portion 73b of the cover via the wave spring 76, the resin sleeve 71, The hub iron core 72 and the release bearing 10 are assembled integrally. The minute gap 16 is provided between the outer ring 75 and the cover 73, and the outer ring is only urged in the axial direction by the wave spring 76, so that the outer ring can be moved by the minute gap in the radial direction. On the other hand, the inner ring 74 of the release bearing 10 projects in the axial direction via the ball 6 so as to be in contact with the diaphragm spring 56. Therefore, even if the diaphragm spring and the rotation center line of the release bearing are eccentric, the outer ring 75 of the release bearing 10 moves in the radial direction, and the rotation center of the diaphragm spring 56 and the release bearing are automatically matched. So-called self-centering.

However, in this case, since the cover 73 is formed so as to cover the release bearing 10, components are large. Further, the wave spring 76 is also large for the thrust, and it is difficult to reduce the weight and size as a whole. Also, assembly took time. The object of the present invention is to
An object of the present invention is to provide a self-aligning clutch release bearing which has a simpler structure, is lightweight and is easy to assemble. At the same time, in order to prevent misalignment of the alignment position due to external vibration from the engine or the like, it is necessary to obtain the alignment position holding performance of the bearing.

[0005]

According to the present invention, a resin sleeve having a shaft hole and a flange, and one end of the flange of the resin sleeve and a disk portion are integrally connected to the shaft hole and larger than the shaft hole. A self-aligning clutch release, comprising: a hub iron core having a hollow hole; and a bearing provided with one of an inner ring and an outer ring abutting on the other end of the flange portion of the resin sleeve so as to be able to move slightly in the radial direction. In the bearing, a spring hole provided in the disk portion of the hub iron core in the axial direction and a guide notch provided in the outer periphery of the flange portion or the disk portion in parallel with the spring hole are provided. Furthermore, one end is inserted into the spring hole from the hub iron core side,
Following one end, it bends outward from the disk part, further bends toward the bearing side so as to fit into the guide notch, and further holds the inner ring or outer ring abutted on the other end of the flange portion so as to urge it toward the flange side. The above object is achieved by providing a self-aligning clutch release bearing in which a wire spring having a bent end is provided, and at least a contact surface of the other end of the wire spring with an inner ring or an outer ring is non-slip processed. did.

(Operation) An axial spring hole is provided in the disk portion of the hub iron core, one end of the wire spring is inserted into the spring hole, and the wire spring is bent outward from the hub iron core following the one end. Since the wire spring is bent and arranged so as to fit into a guide notch provided in the outer periphery of the flange portion or the disk portion in parallel with the spring hole, the radial spring and the circumferential direction of the wire spring can be securely fixed. The diameter of the spring hole and the diameter of the wire spring, or the diameter of the guide notch (for example, the radius when formed in a semicircular portion) and the diameter of the wire spring should be selected so that there is no gap as much as possible and they are tight. good. Further, since a wire spring whose other end is bent so as to urge one of the inner ring or the outer ring contacted to the other end of the flange portion toward the flange side is disposed, for example, when the inner ring is to be clamped, , While the outer ring abuts on the diaphragm spring while holding the inner ring in a pre-loaded state, the inner ring can be moved in the radial direction, and even if the diaphragm spring and the rotation center line of the release bearing are eccentric, the release bearing is in the radial direction. The center of rotation of the diaphragm spring and the release bearing is automatically aligned. Further, since at least the contact surface of the other end of the wire spring with the inner ring or the outer ring is non-slip processing, deviation from the centering position of the bearing with respect to external vibration such as engine vibration is small.

The non-slip processing of the contact surface of the other end of the wire spring with the inner ring or the outer ring is preferably made flat (claim 2). Wire springs with a circular cross section are easy to obtain and work on flat surfaces. Moreover, the thing of a square section may be sufficient.

[0008] For the non-slip processing of the contact surface of the other end of the wire spring with the inner ring or the outer ring, it is preferable to further form a mesh-like surface on a flat surface. In the case of a square cross-section, only a mesh-shaped surface processing may be performed, but in the case of a circular cross-section, it is preferable to perform a plane processing and then perform a mesh-shaped surface processing.

The wire spring can be manufactured by bending a single linear spring. However, there are cases where it is desired to more firmly fix the rotation direction and increase the holding force of the inner or outer ring in the axial direction. Therefore, in claim 4, a spring hole and a guide notch are provided at two places close to each other, one end of each is inserted into the spring hole, and one end is bent outwardly of the disk portion following the one end. The wire spring was bent to the bearing side so as to fit, and the other end of the flange portion was further connected by the connecting portion, and the other end was bent so as to pinch and urge the abutted inner ring or outer ring toward the flange side. .

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described. FIG. 1 shows a first embodiment of the present invention,
1A is a front view of the self-aligning clutch release bearing viewed from the hub iron core side, FIG. 1B is a cross-sectional view taken along line YOX of FIG. 1A, and FIG. FIG. 3 is a partially enlarged perspective view of one end of the wire spring viewed from the direction of arrow A in FIG. 2, and FIG. 4 is a perspective view of FIG.
FIG. 4 is a partially enlarged perspective view of the other end of the bearing holding side as viewed from a direction of an arrow. In FIG. 1, the resin sleeve 1 has a substantially cylindrical shape having a shaft hole 1a and a flange portion 11. The shaft hole 1a is shaped and dimensioned so as to be slidable in the axial direction on the retainer as described in FIG. The recess 1c at the center of the shaft hole 1a is a relief provided to facilitate sliding. The disk portion 13 of the hub iron core 2 is in contact with the flange portion 11 on the right side in the drawing.

A substantially cylindrical portion 2c having a hollow hole 2a larger than the shaft hole 1a and a parallel portion 2d is formed in the hub iron core 2 so as to be connected to the disk portion 13. The outer peripheral surface 2e of the parallel portion 2d of the hub iron core serves as a guide for the release fork 55 shown in FIG. 9 when incorporated in the clutch. Further, the tip of the release fork 55 can be brought into contact with the surface 13a of the disk portion at the same position as the outer peripheral surface 2e, and when the release fork comes into contact, the release hub is moved to the left as viewed in FIG. A substantially cylindrical short cylindrical portion 1e extends on the side of the resin sleeve 1 on which the hub iron core is mounted, and the outer periphery of the short cylindrical portion has a parallel surface that fits with the inner surface of the parallel portion 2d of the hub iron core. A stopper 1d is provided, and the resin sleeve 1
It has the function of positioning with the hub iron core and preventing rotation.

The guide groove 1 is formed at the outermost periphery of the end face of the flange 11 on the bearing side.
1c is provided in the groove, one end of which is fitted into the groove, reaches the end of the parallel portion of the hub iron core over the flange 11 symmetrically up and down, and the surface 13a
A clip wire 20 shaped by spring steel is provided so as to be parallel to the parallel portion 2d. When incorporated into the clutch, the tip of the release fork 55 is positioned between the clip wire 20 and the surface 13a. When the release fork moves rightward as viewed in FIG. Is moved rightward. The fork return guide on which the release fork works is formed by the disk portion 13 and the clip wire 20 described above. In FIG. 10, a fork return guide is formed with respect to the clip wire by extending the outer peripheral end of the disk portion in the direction of the bending axis and further providing a tongue portion 77 which is bent inward.
Although the release hub 5 is moved rightward in the drawing by contacting the release hub 5 with the tongue, a similar structure may be used in the present invention.

A protruding portion 12 is formed inwardly adjacent to the guide groove 11c of the flange portion 11, and a small gap 16 is formed between the inner diameter surface 12a of the protruding portion and the outer diameter surface 5a of the outer ring 5 so that the outer ring 5 of the release bearing 10 is formed. Is brought into contact with the other end 11b of the flange 11 so that the outer ring can be slightly moved in the radial direction.
The bearing 10 has an inner ring 4 protruding in the axial direction via a rolling element 6. Further, even if the outer ring 5 moves in the radial direction, the inner ring 4 can freely rotate with respect to the outer ring 5 without interfering with the resin sleeve 1. Symbols 8, 9
Is a seal member for preventing dust and the like from entering the bearing, and 7 is a retainer.

A circular spring hole 14 is provided on a line orthogonal to the connecting line of the parallel portion 2d and extends through the flange portion 11 and the disc portion 13 of the hub iron core in the axial direction. A guide notch 15 provided in parallel with the hole 14 is provided. On the other hand, the wire spring 3 is substantially concave in the free state as shown in FIG.
The upper end 3a is bent slightly downward (inward) to form a bent portion 3b and a straight portion 3c, and the other end 3d is obliquely upward rightward (inward) following the straight portion in which the lower side of the U-shape extends.
And the straight portion 3c and the other end form an acute angle V-shape. The wire spring has a circular shape with a uniform cross section except for the other end, and one end 3a has substantially the same diameter as the spring hole as shown in FIG. The other end 3d has a contact surface 3f and an opposite surface 3g which contact the outer end 5b of the outer race 5 as shown in FIG.
Is made flat and anti-slip. Further, the surface thereof is subjected to a mesh-like non-slip processing by knurling.

As shown in FIG. 1, one end 3 of this wire spring 3
a is fitted into the spring hole 14 from the hub iron core side to the middle of the flange. On the other hand, the linear notch 3c of the wire spring is
Are fitted. Since the guide notch 15 and the spring hole 14 are provided in parallel, the one end 3a of the wire spring is bent inward as shown by the dotted line in FIG. As a result, the spring force acts and the wire spring is securely fixed to the spring hole and the guide notch. Further, the flat surface 3f of the other end 3d of the wire spring is fitted so as to be hooked on the outer end 5b of the outer ring 5 abutting on the other end 11b of the flange portion. As shown by the dotted line in FIG. 1, the other end 3d of the wire spring is bent inward, but is spread and attached as shown by the solid line. 5 is pinched and biased. In addition, the contact surface 3f of the other end 3d of the wire spring is flat and mesh-shaped, and the holding force of the contact surface with the bearing is enhanced.

That is, the bent portion 3b follows the one end 3a.
, And the straight portion 3c is bent toward the bearing so that the straight portion 3c fits into the guide notch 15, and the outer ring 5 abutted on the other end 11b of the flange is urged toward the flange. The other end 3d is bent and the other end is provided with a non-slip wire spring. Therefore, it works to prevent the resin sleeve 1 and the hub iron core 2 from shifting in the rotational direction, and secures the wire spring 3 in the radial and circumferential directions. Further, since the bearing is securely held by the flat surface of the other end 3d of the wire spring and the mesh-shaped non-slip, displacement of the alignment position due to vibration is small. On the other hand, the inner ring 4 is in contact with the diaphragm spring, while the outer ring 5 is held in a pre-pressed state and the outer ring can be moved in the radial direction, so that the rotational centers of the diaphragm spring and the release bearing are automatically aligned. Further, the outer ring 5 is connected to the inner surface 12 of the protrusion 12 of the resin sleeve.
Since the minute gap 16 is formed between the outer ring 5a and the outer diameter surface 5a of the outer ring, the manufacturing error is small as described above, the outer diameter of the outer ring can be easily confirmed, and the dimension management after assembly is easy.

Next, a second embodiment of the present invention will be described. FIG. 6 shows a second embodiment of the present invention. FIG. 6 (a) is a front view of a self-aligning clutch release bearing viewed from the hub iron core side, and FIG. 6 (b) is a YO of (a). It is sectional drawing which followed the -X line. In the second embodiment, the inner ring is sandwiched between the resin sleeves, and the outer ring rotates and the outer ring abuts against the diaphragm spring. Further, this is an example in which the arrangement of the wire springs and the arrangement of the parallel portions are changed.
Further, the resin sleeve and the hub iron core are press-fitted and fixed at the short cylindrical portion of the resin sleeve. The same parts as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 6, the resin sleeve 41 has a shaft hole 1a and a flange 11, and has a substantially cylindrical shape in which a long cylindrical portion 41f and a short cylindrical portion 41e are formed on both sides of the flange. A detent part 41 d having a two-plane width is formed on the outer periphery of the flange part 11. The flange portion 11 is located on the right side in FIG.
Is in contact.

The outer periphery of the disk portion 13 is provided with an outer peripheral parallel portion 42d which is fitted with the detent portion 41d.
And the hub iron core 42 are positioned. Outer parallel part 42d
And a fork return guide formed of a parallel guide portion 42e and a tongue portion 47 whose tip is bent outwardly is formed at the 90-degree rotational position so as to be connected to the disk portion 13 to form a parallel surface in the axial direction. The bottom of the parallel guide portion 42e is the short cylindrical portion 4
1e is formed near the outer peripheral portion 41a. 42f is a support for maintaining the strength of the parallel guide portion 42e. The surface excluding the fork return guide of the hub iron core is a short cylindrical portion 41
e, a hollow hole 42a smaller than the outer periphery 41a of the end portion is provided, and the outer periphery 41a of the short cylindrical portion 41e is provided with a step portion 41b in which the hub iron core interference portion 42b of the hollow hole 42a is substantially immersed. The iron core interference part 42b is made to interfere, and the hub iron core interference part is press-fitted into the step part, so that the resin sleeve 41 and the hub iron core 42 are fixed. Wire spring 4
In addition to 3, the press-fit portion and the parallel portion further couple in the axial direction and the rotational direction. In addition, the interference slit 4 is formed at four equally spaced positions on the outer periphery 41a so that the material is small and the press-fitting becomes easy.
2c is provided.

The outer peripheral surface 41g of the long cylindrical portion 41f and the inner ring 44
The inner ring of the release bearing 30 abuts the other end 11b of the flange 11 with a small gap 16 between the inner ring 44 and the inner ring surface 44a so that the inner ring can be slightly moved in the radial direction. The outer ring 45 of the bearing 30 is disposed so as to protrude in the axial direction via the rolling element 6. Further, even if the inner ring moves in the radial direction, the outer ring 45 can freely rotate with respect to the inner ring 44 without interfering with the resin sleeve 41. Inner ring 4
Reference numeral 4 denotes a protruding portion 4 protruding from the outer ring 45 toward the flange 11b.
4c is provided, and a wire spring circumferential groove 44b is provided on the outer periphery of the protruding portion.

A spring hole 1 penetrating the flange 11 and the disk portion 13 in the axial direction at a position where the center line orthogonal to the outer peripheral parallel portion 41d and the wire spring groove 44b substantially cross each other when viewed from the axial direction.
4 are provided. Further, a line that passes through the spring hole 14 and is parallel to the outer peripheral parallel portion 41d and the disk outer periphery 42g of the hub iron core.
Guide notch 1 near the inside of the intersection with
5 are provided. Further, the guide notches 15 are symmetrical with respect to the axial center. On the other hand, the wire spring 43 is
Except for 3d, it has a uniform circular cross-section, is substantially vertically elongated concave shape when viewed from the left side, has a vertically elongated U-shape on the right side, and has an upper end 43a bent slightly downward (inward), A long bent portion 43b, a short straight portion 43c is formed on the lower side of a vertically long U-shape, and the other end 43d follows the straight portion.
Is bent obliquely upward (inward) to the right, and the straight portion and the other end are in the shape of an acute angle, and the upper side (the other end) is vertically elongated. The other end 43d has a flat surface processed in the same manner as in FIG. The flat surface 43f is opposite to the bearing side wall surface 44f of the inner ring wire spring circumferential groove 44b.
Is to be in contact with.

As shown in FIG. 6, one end 43a of the wire spring 43 is inserted into the circular spring holes 14, from the hub iron core side to the middle of the flange. On the other hand, the linear portion 43c of the wire spring is fitted into the guide notch 15. Guide notch 1
5 and the spring hole are provided in parallel, so that one end 43a of the wire spring is bent inward. However, since the wire spring is attached as shown in FIG. It is securely fixed in the notch. Further, the other end 43d of the wire spring is connected to the inner race 4 abutting on the other end 11b of the flange.
4 so as to be hooked on the wire spring circumferential groove 44b. Since the other end 43d of the wire spring is bent inward, it is attached as shown in FIG. 6, so that the spring force acts and the inner ring 44 is held between the wire spring and the flange 11 with a preload. Further, the bearing is securely held by the flat surface of the other end 43d of the wire spring and the mesh-shaped non-slip. Therefore, as described above, even in the case of the outer ring rotating type, the deviation of the centering position due to vibration is small, while the center of rotation of the diaphragm spring and the release bearing is automatically aligned, the manufacturing error is small, and the inner ring is easy. It is easy to control the dimensions after assembly.

In order to fit the wire spring 43 into the wire spring circumferential groove 44b, it goes without saying that an appropriate gap is provided between the bearing 30 and the flange portion 11 and the disk portion 13. FIG.
Although the other end 43d of the wire spring is straight,
4b may be curved. In this case, the positions of the spring holes and the guide notches are appropriately determined according to the curvature. In addition, in the present embodiment, in addition to the above, the parallel portion 41d of the resin sleeve 41 and the parallel portion 4 of the hub iron core to be fitted.
2d is the outer peripheral parallel portion, and the fork guide parallel portion 42
e and is provided on the outer peripheral side, so that relative rotation can be more reliably prevented.

In the second embodiment, the spring hole is formed by penetrating the hub iron core and the resin sleeve. In this embodiment, the spring hole is formed by connecting the resin sleeve and the hub iron core to the parallel portions 41d and 42d. In addition, the outer periphery 41a and the hub iron core interference portion 42
b and interfere with each other to enhance the rotation and axial fixing of the hub and the sleeve. In such a case, it is not necessary to penetrate the spring hole to the resin sleeve and insert the wire spring. Therefore, in the third and fourth embodiments, examples are shown in which only the spring holes of the hub iron core are used. Except for the vicinity of the spring hole, the operation is the same as described above, and the description is omitted. FIGS. 7A and 7B are partially enlarged cross-sectional views showing the third and fourth embodiments, respectively, in the vicinity of a spring hole according to the fourth embodiment. The third embodiment shown in FIG. 7A is different from the second embodiment in that a spring hole is formed only in the hub iron core. The spring hole 14 is bored only in the hub iron core 13 and the tip 43 of the wire spring 43 '.
a 'is inserted into the spring hole 14 and does not reach the resin sleeve.

The wire spring of the fourth embodiment shown in FIG. 7 (b) shows the case where the wire spring shown in FIG. 2 is used, and the tip 3a of the wire spring 3 'is inserted into a spring hole 14 formed only in the hub iron core. 'Is inserted into the spring hole. In the fourth embodiment,
To fix the hub iron core and the resin sleeve, the two-chamfered hub iron core interference part 33 is similarly immersed in the groove part 21b provided on the two-chamfered resin sleeve, and the interference part provided outside the resin sleeve is provided. 21b shows an example in which the interference is caused by pressing the hub iron core interference part into the interference part with the interference of the hub iron core 21b. In the third and fourth examples, there is no need to machine the spring holes on the resin sleeve side, and the assembly of the wire spring is easy. In addition, the spring hole of the hub iron core does not have to penetrate.

A description will be given of a fifth embodiment of the present invention. FIG. 8 is a side view of a free state before assembling the wire spring 23 used in the fifth embodiment, and FIG.
A partially enlarged perspective view as viewed from the direction of the arrow, FIG.
FIG. 4 is a sectional view taken along line D. As shown in FIG. 8, two wire springs described with reference to FIG. 2 are used, and the other end 3d of the wire spring is connected by a connecting portion 3e. In the above-described embodiment, the wire spring 3
Hole 14 into which one end 3a of the wire spring is inserted and the linear portion 3 of the wire spring
One guide notch 15 into which c is fitted is provided at two locations, and two locations are provided symmetrically with respect to the axial center. However, when the main spring 23 is used, two spring holes and two guide notches may be provided close to each other. . Further, as shown in FIG. 9, the other end 3d and the connecting portion 3e are connected to the outer end 5b of the outer race 5 as shown in FIG.
The contact surface 3f that comes into contact with is made flat and is subjected to anti-slip processing. Further, the surface thereof is subjected to a mesh-like non-slip processing by knurling.

According to the present embodiment, the number of wire springs acting on the resin sleeve, hub iron core, bearing inner ring or outer ring is two.
Since it is doubled, the resistance in the rotational direction between the resin sleeve and the hub iron core, the holding force for holding and holding the inner ring or the outer ring, and the fixing force for the wire spring are increased. In addition, the wire spring is easily gripped, so that the assembling is facilitated. The other end 3d of the wire spring may be rectangular as shown in FIG. In this case, various cross sections can be applied, such as a square wire spring may be used for the entire cross section of the wire spring.

Although various embodiments have been described above, the respective configurations may be combined, the shape of the wire spring,
Needless to say, the positions of the spring holes and the guide cutouts can be appropriately selected and modified without departing from the spirit of the present invention.

[0028]

According to the present invention, a spring hole and a guide notch are provided, one end of the wire spring is inserted into the spring hole, and the wire spring is bent so as to fit into the guide notch. Radial direction, ensure the fixing in the circumferential direction, and further arrange a wire spring whose other end is bent so as to pinch and urge one of the inner ring and the outer ring, and contact the inner or outer ring at the other end of the wire spring. While making it non-slip and ensuring position retention,
Since the center of rotation of the diaphragm spring and the release bearing can be automatically aligned, there is little misalignment due to external vibration from the engine, etc., the structure is simple and lightweight, and the self-alignment is easy to assemble. Type clutch release bearing. In addition, the other end of the wire spring can be made flat or knurled to simplify the non-slip work, and the position can be reliably maintained even with a simple structure.

A spring hole and a guide notch are provided at two adjacent positions, a wire spring is inserted and fitted into each, and the other end of the wire spring is connected so as to pinch and urge the inner ring or the outer ring. As a result, the fixing force and the transmitting force are more reliable. Also, assembly is easier.

[Brief description of the drawings]

FIG. 1A is a front view of a self-aligning clutch release bearing according to a first embodiment of the present invention as viewed from the hub iron core side, and FIG. 1B is a YOX line of FIG. FIG.

FIG. 2 is a side view of a free state before assembling a wire spring used in the first embodiment of the present invention.

FIG. 3 is a partially enlarged perspective view of one end of the wire spring of the present invention as viewed from the direction of arrow A in FIG. 2;

FIG. 4 is a partially enlarged perspective view of the other end of the wire spring according to the present invention as viewed from the arrow B in FIG. 2;

FIG. 5 is a partially enlarged perspective view of another example of one end of the wire spring of the present invention viewed from a slightly oblique direction as seen from the arrow B in FIG. 2;

6A is a front view of a self-aligning clutch release bearing according to a second embodiment of the present invention, as viewed from the hub iron core side, and FIG. 6B is a YOX line of FIG. FIG.

FIG. 7A is a partially enlarged cross-sectional view near a spring hole according to a third embodiment, and FIG. 7B is a partially enlarged cross-sectional view near a spring hole according to a fourth embodiment; .

FIG. 8 is a side view of a free state before assembling a wire spring used in a fifth embodiment of the present invention.

9A is a partially enlarged perspective view of the other end of the wire spring used in the fifth embodiment of the present invention, as viewed from the arrow C in FIG. 8;
(B) is a sectional view taken along line DD of (a).

FIG. 10 is a sectional structural view of a vicinity of a clutch of an automobile, showing a use state of a self-aligning clutch release bearing.

FIG. 11 is a longitudinal sectional view of a conventional self-centering clutch release bearing.

[Explanation of symbols]

 1, 41 Resin sleeve 1a Shaft hole 2, 42 Hub iron core 2a, 42a Hollow hole 2b, 42g Disc outer periphery 3, 3 ', 43, 43' Wire spring 3a, 3a ', 43a, 43a One end of wire spring 3b, 43b Bending portion 3c, 43c Linear portion 3d, 43d The other end of wire spring 3e Connecting portion 3f, 43f Contact surface of wire spring 4, 44 Inner ring 5, 45 Outer ring 10, 30 Release bearing 11 Flange 11a One end of flange 11b The other end of the flange 13 Disc 14 Spring hole 15 Guide notch

 ──────────────────────────────────────────────────続 き Continued from the front page F term (reference)

Claims (4)

[Claims] 1. A resin sleeve having a shaft hole and a flange portion, and a hub having a hollow hole larger than the shaft hole which is integrally assembled with one end of the flange portion of the resin sleeve and a disk portion and is connected to the shaft hole. The self-aligning clutch release bearing, comprising: an iron core; and a bearing provided with one of an inner ring and an outer ring abutting on the other end of the flange portion of the resin sleeve such that the inner ring or the outer ring can move slightly in the radial direction. A spring hole provided in the disk portion of the iron core in the axial direction, a guide notch provided in parallel with the spring hole on the outer periphery of the flange portion or the disk portion, and one end is fitted into the spring hole from the hub side. Then, following one end, bends outwardly of the disk portion, further bends toward the bearing so as to fit into the guide notch, and further moves the inner ring or outer ring abutted on the other end of the flange portion toward the flange side. The other end is folded to urge A self-aligning clutch release bearing, wherein a bent wire spring is disposed, and at least a contact surface of the other end of the wire spring with the inner ring or the outer ring is subjected to non-slip processing. 2. The self-centering clutch release bearing according to claim 1, wherein the non-slip processing of the contact surface of the other end of the wire spring with the inner ring or the outer ring is flat. 3. The automatic adjustment according to claim 2, wherein the non-slip processing of the contact surface of the other end of the wire spring with the inner ring or the outer ring is further performed on the flat surface in a mesh-like manner. Heart type clutch release bearing. 4. The spring hole according to claim 1, and the guide notch are provided in two adjacent places,
One end is inserted into the spring hole, the end is bent outward of the hub iron core following the one end, and further bent toward the bearing so as to be fitted into the guide notch, and the other end of the flange portion is a connecting portion. 2. A wire spring, which is connected and has the other end bent so as to pinch and urge the abutted inner ring or outer ring toward the flange side, is provided.
Or a self-aligning clutch release bearing according to 2 or 3.