JP2520010Y2 - Clutch release device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a clutch release device for an automobile that connects and disconnects power between an engine and a transmission.

<Prior Art> A clutch release device is a device that moves a release fork mounted on a clutch release bearing by stepping on a foot pedal and presses the clutch release bearing against a diaphragm side to connect and disconnect power between an engine and a transmission.

In such a clutch release device, the release fork is attached to the clutch release bearing by using a clip. That is, a clip is attached to a flange forming an exterior part of the clutch release bearing, and the release fork is fixed to the clutch release bearing by the elastic force of the clip. And
As a structure for attaching the clip to the flange, there have been proposed actual open Sho 63-133643 and actual open Sho 53-131157.

In the case of Shokai 63-133643, the clip is formed by forming an ear-shaped locking projection around the flange so that the clip runs along the peripheral edge of the flange and goes around the locking projection, that is, the bearing side. Is attached to the flange.

Also, in the case of the actual open sho 53-131157, a total of three ear-like locking projections are formed at the 180 ° opposite positions of the flange periphery and in the center position between them, and the center locking projection is The clip is attached to the flange by inserting the clip on the front surface side, that is, the side on which the release fork comes into contact, and on the rear surface side, that is, the bearing side, on the other two locking projections.

<Problems to be Solved by the Invention> By the way, the above-mentioned conventional example has the following problems. In other words, in the case of Shokai 63-133643, the clip is attached along the peripheral edge of the flange so that it does not move easily in the axial direction, but it can move easily in the circumferential direction. ing. Therefore, when attaching the release fork, the clip may be displaced in the circumferential direction from the position on the flange where it should be, which makes the work of correcting the position of the clip troublesome and the work of attaching the release fork to be troublesome. Was becoming.

In the case of the actual open sho 53-131157, the clip is inserted and locked on both sides of the flange so that it does not move easily in the circumferential direction. However, the structure is such that it can move in the radial direction along the flange surface. Therefore, the clip may be displaced in the radial direction along the flange plane from the position on the flange where it should be. In addition, if there is a radial displacement, the clip may come off the outer diameter side from the central locking projection, and if that happens, the two locking projections formed at the remaining 180 ° facing position will be removed. Even the rotation around the center of rotation is caused, and it is possible to move in the axial direction, and the work of returning the misaligned clip to the original position becomes quite troublesome, and it was extremely difficult to attach the release fork.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a clutch release device that restricts a slide amount of a clip and can easily attach a release fork.

<Means for Solving the Problems> In order to achieve the above object, the present invention provides a clutch release bearing, a sleeve provided on the inner peripheral side of the clutch release bearing, and a sleeve extending radially outward from the sleeve. A clutch release device comprising: a flange that is provided to form an exterior part of a clutch release bearing; and a U-shaped clip that is mounted on a flat surface of the flange on the side where the release fork comes into contact and locks the release fork. The flange has a pair of fork receiving ears extending in the radial direction from the outer periphery of the flange to receive the tip of the release fork, and the U-shaped clip has fork receiving ears at both ends thereof. Flange mounting means for engaging a U-shaped clip on the flange to attach the U-shaped clip to the flange. A pair of engaging step portions formed by wrapping both ends of the lip around the flat surface of the clutch release bearing side of each of the fork receiving ears, and a flange formed on the clip tip side and the root side of each engaging step portion. The two sets of abutting portions elastically abutted on the plane on the abutting side of the release fork of No. 2 above constitute the clutch release device.

<Operation> According to the above configuration, the U-shaped clip is provided with the flange attaching means for engaging with the fork receiving ear portion, and the flange attaching means is formed so as to surround the flat surface portion of the fork receiving ear portion on the clutch release bearing attaching side. Since it is formed by the engaging step portion and the pair of abutting portions which are respectively formed on the clip tip side and the root side of the engaging step portion and elastically abutted on the plane of the release fork abutting portion of the flange, The U-shaped clip can be held by the flange while the flange is sandwiched between the flange mounting means and the contact portion, and the movement of the U-shaped clip in the axial direction can be completely regulated. Furthermore, since the flange mounting means of the U-shaped clip and the fork receiving ear portion of the flange are mounted in a state of restricting movement in the circumferential direction and the radial direction, the circumferential direction and the radial direction of the U-shaped clip are regulated. You can In particular, two contact portions at both ends of the U-shaped clip are provided at four positions in total, so that the clip can be firmly fixed to the flange even if the elastic pressure contact force at each contact portion is reduced. As a result, the force required to engage the clip with the flange is small, so that the clip can be easily attached. Moreover, since it is not necessary to fit the clip over the engagement groove or the projection, a large force is not required for attaching the clip, which contributes to improvement of workability. Further, since the contact portions that wrap around the plane of the release fork contact side of the flange and make elastic contact are provided on both sides of the pair of engagement step portions, even if the clip is moved in the radial direction, It is difficult for the clip to attach to the flange due to interference with the receiving ear portion, and the attachment state can be stably maintained.

<Example> Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

FIG. 1 (a) is a plan view of the first embodiment of the present invention.
Part (b) of FIG. Further, FIG. 2 is a partially cutaway front view of FIG. 1, and FIG. 3 is a front view with a release fork attached.

The clutch release device 1 includes a clutch release bearing 2 and a U-shaped clip 3 for fixing a release fork F to the clutch release bearing 2. The clutch release bearing 2 comprises a bearing body 4, a flange 5 and a sleeve 6. The bearing body 4 is a self-aligning type, and has an outer ring 7, an inner ring 8, balls 9, a cage 10, and a shield 1.
It is composed of 1, a spring 12, and an exterior cover 13.

The flange 5 is attached to the outer side in the radial direction of the sleeve 6 arranged on the inner peripheral side of the bearing main body 4 by integral molding, covers one end of the bearing main body 4, and covers the exterior of the clutch release device 1. It forms part of the department. Fork receiving ears 16, 16 extending in the outer peripheral direction are provided at 180 ° opposite positions on the outer peripheral edge of the flange 5, respectively. The base end portion of the fork receiving ear portion 16 which is continuous with the flange 5 on the inner diameter side bulges to a flat surface portion (hereinafter, referred to as a surface portion) of the flange 5 on the side where the release fork F abuts to form a fork receiving bulging surface 17. are doing. A clip locking claw 18 is provided in the outer peripheral edge of the flange 5 at a substantially central portion between the fork receiving ears 16, 16. The clip locking claw 18 is formed by cutting out a part of the peripheral edge of the flange 5 and then bending it toward the front surface side.

The U-shaped clip 3 is located on the surface of the flange 5 as a whole, and an engaging portion 19 that engages with the clip engaging claw 18 is formed at a substantially central portion of the clip 3. Then, at both ends, engaging step portions for engaging the fork receiving ear portion 16 are provided.
20 is formed, and flange contact portions 21A and 21B are formed at both ends of the engagement step portion 20.

The flange contact portion 21A on the base side of the clip 3 is formed by bending both ends of the clip 3 located on the surface of the flange 5 in the outer diameter direction. The engagement step portion 20 is bent from this abutting portion 21A toward the inner diameter direction by 90 °, and further,
The engaging portion 19 is formed by passing through the back surface of the fork receiving ear portion 16 and is further bent in the bearing side direction so as to project along the fork receiving ear portion 16. The flange abutment portion 21B on the tip side of the clip 3 is formed by bending the tip end side clip 3 of the engaging portion 19 that has passed through the back surface of the fork receiving ear portion 16 by 90 ° on the flange 5 surface in the clip inner diameter direction. There is.

Reference numeral 22 denotes a fork engaging portion, which is folded back in the opposite direction from the flange abutting portion 21B so that the tip end side of the clip 3 is parallel to the abutting portion 21B, and then the tip of the clip 3 is further placed on the fork receiving ear portion 16. Is bent by 90 ° in the inner diameter direction, and then the convex portion of the bent portion is bent in a dogleg shape so as to face the fork receiving bulging surface 17.

 Next, a mounting state of the U-shaped clip 3 will be described.

As shown in FIG. 1 (a), in the U-shaped clip 3, the engaging portion 19 is engaged with the clip engaging claw 18 of the flange 5. Then, the tip end side of the clip wraps around the back side of the fork receiving ear section 16, and the engaging step section 20 and the fork receiving ear section are provided.
16 backs are engaged. In addition, the fork receiving ear
The flange abutting portions 21A and 21B elastically abut on the surface of the flange 5 at both ends in the circumferential direction of 16, whereby U
The V-shaped clip 3 is elastically attached to the flange 5. The fork engaging portion 22 at the tip of the clip 3 is opposed to the fork receiving bulging surface 17 at a predetermined interval, or slightly abuts.

Release fork F to this clutch release device 1
As shown in FIG. 3, the attachment of the fork is against the elastic force of the U-shaped clip 3 and the fork receiving bulging surface 17 and the fork engaging portion are attached.
It is performed by inserting the tip of the release fork F between 22 and.

U-shaped clip 3 attached as above
Is firmly attached to the surface of the flange 5 while the flange 5 is sandwiched between the engagement step portion 20 and the flange contact portions 21A and 21B. Therefore, it does not move in the axial direction.

Furthermore, the movement of the U-shaped clip 3 is also restricted in the radial direction and the circumferential direction. That is, in this clutch release device 1, the engagement position between the clip 3 and the release fork F may be displaced due to a processing error. As a correction for this, the sliding movement of the U-shaped clip 3 may be corrected as shown in FIG. 1 (a). It is configured to allow a predetermined amount in the directions of a and b. That is, the U-shaped clip 3 is slidable in the direction of a, and the U-shaped clip 3 is slid further by the flange contact portion 21B on the tip side contacting the bulging surface 17 of the flange 5. I'm trying not to. Further, it is also slidable in the direction of (a), and the engaging portion 19 engages with the clip engaging claw 18 of the flange 5 so that it cannot be further slid.

Depending on the clutch release device, the flange 5
Some do not have the clip locking claw 18, but in that case,
The inner flange abutting portion 21A and the bulging surface 17 come into contact with each other to prevent the sliding movement in the direction of (a).

In this way, since the sliding movement of the U-shaped clip 3 is restricted after being given a predetermined amount of allowable value, the flange abutting portions 21A, 21B should not fall off the surface of the flange 5 by the sliding movement. Nor.

Next, a modified example of the present invention will be described. Fig. 5 (a),
The second embodiment shown in (b) is different from the first embodiment in the shape of the U-shaped clip 3 (the shape of the contact portion 21B on the tip side). That is, the U-shaped clip 30 has the engagement step portion.
The clip 30 on the tip side of 20 is turned 180 ° in the direction along the surface of the flange 5 toward the inner diameter side of the flange 5 and further vertically rises from the surface of the flange 5 toward the release fork F side. The portion is the flange contact portion 21B. The other shapes are the same as those in the first embodiment.

The third embodiment shown in FIGS. 6A and 6B also differs from the other embodiments in the shape of the U-shaped clip (the shape of the flange contact portion 21B on the tip side). That is, the flange abutting portion 21B on the clip tip side of the U-shaped clip 40 has the clip 40 on the tip side of the engagement step portion 20 in the direction along the flange 5 toward the inner diameter side of the flange 5 by 90 ° or more. 110 °) and then release fork F from the surface of flange 5
It is formed so as to stand up in the lateral direction and 180 ° U-turned so as to be positioned on the clip 3 portion bent by 90 ° or more as it is, and the rising portion thereof is the flange contact portion 21B. In this embodiment, the slide allowable range is narrower than that in the first embodiment. The other shapes are the same as those in the first embodiment.

The fourth embodiment shown in FIGS. 7A and 7B also differs from the other embodiments in the shape of the U-shaped clip (the shape of the abutting portion 21B on the tip side). The U-shaped clip 50 of this embodiment is
Similar to the first embodiment, the clip 50 on the tip side of the engagement step portion 20.
Is bent 90 ° inward and positioned on the surface of the flange 5, and the tip is raised vertically, and the rising portion thereof is the flange contact portion 21B on the tip side. This embodiment is different from the first embodiment in that the flange contact portion on the front end side is
The inward extension of 21B is set to be slightly shorter. The other shapes are the same as those in the first embodiment.

By the way, in all of the above-mentioned embodiments, the fork receiving bulging surface 17 is formed on the flange 5. The fork receiving bulging surface 17 is provided to adjust the mounting position between the fork receiving bulging surface 17 and the release fork F, which is a member to be mounted. Therefore, there is also a clutch release device in which the fork receiving bulging surface 17 is not provided. FIG. 8 shows an embodiment having no fork receiving bulging surface 17. In this fifth embodiment, since the fork receiving bulging surface 17 is not provided, the protrusion amount of the U-shaped clip 60 on the rear surface side of the engagement step portion 20 is set to be larger than that in the other embodiments, and thus the fork receiving portion is set. The ear portion 16 can be engaged. The other shapes are the same as those in the first embodiment.

<Effects of the Invention> As described above, according to the present invention, the U-shaped clip is firmly attached to the flange, and the U-shaped clip is reliably moved in the radial, axial, and circumferential directions with respect to the flange. You can now stop. Therefore, the problem that the U-shaped clip is displaced when mounting the release fork and the mounting becomes difficult, and the release fork can be easily mounted.

[Brief description of drawings]

1 to 4 relate to a first embodiment of the present invention, FIG. 1 (a) is a plan view thereof, and FIG. 1 (b) is a partially cutaway side view of the same taken along arrow A, FIG. Is a partially cutaway front view, and FIG. 3 is a partially cutaway front view with a release fork attached.
FIG. 4 is a perspective view of a U-shaped clip. 5 (a) and 5 (b) relate to the second embodiment, FIG. 5 (a) is a plan view thereof, and FIG. 5 (b) is a partially cutaway front view thereof. 6 (a) and 6 (b) relate to the third embodiment, and
FIG. 6A is a plan view thereof, and FIG. 6B is a partially cutaway front view thereof. 7 (a) and 7 (b) relate to the fourth embodiment, FIG. 7 (a) is a plan view thereof, and FIG. 7 (b) is a partially cutaway front view thereof. FIG. 8 is a partially cutaway front view of the fifth embodiment. 2 ... Clutch release bearing 3 ... U-shaped clip 5 ... Flange 16 ... Fork receiving ear 17 ... Fork receiving bulging surface 18 ... Clip locking claw 19 ... Engaging portion 21A ... Flange abutting portion 21B ... Flange abutting portion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masafumi Sato Inventor Masafumi Sato 3-5-8 Minamisenba, Chuo-ku, Osaka City, Osaka Koyo Seiko Co., Ltd. (56) Reference JP 62-56624 (JP, A) 64-29539 (JP, U) Actually opened 63-133643 (JP, U)

Claims (1)

(57) [Scope of utility model registration request] 1. A clutch release bearing, a sleeve disposed on the inner peripheral side of the clutch release bearing, a flange extending outwardly in the radial direction from the sleeve and constituting an exterior portion of the clutch release bearing, and the flange. And a U-shaped clip that is mounted on a flat surface on the side where the release fork comes into contact and locks the release fork, wherein the flange is formed so as to extend in the radial direction from the outer peripheral portion of the flange. The U-shaped clip has a pair of fork receiving ears for receiving the tip of the release fork, and the U-shaped clip has flange attaching means for engaging the fork receiving ears with the U-shaped clip on the flange. The flange mounting means includes both ends of the U-shaped clip on the clutch release of the fork receiving ears. A pair of engaging step portions formed so as to wrap around the bearing-side flat surface portion, and elastically abutting on the flat surface of the flange on the release fork contact side formed on the clip tip side and the root side of each engaging step portion. A clutch release device comprising two sets of contact portions.