Elastic clamping ring assembly for shaft of isolator

Abstract

The utility model discloses an elastic clamping ring assembly for a shaft of an isolator, which is correspondingly and coaxially assembled on a fixed sleeve of the isolator and is used for axially limiting a shifting fork mounted on the fixed sleeve. The elastic clamping ring assembly for the shaft comprises a clamping ring body clamped and embedded in the clamping groove in the fixed sleeve, an elastic body is arranged on the face, facing the shifting fork, of the clamping ring body, and the elastic body elastically abuts against the shifting fork. The elastic body provides elasticity in the process of axially limiting the shifting fork through the elastic clamping ring assembly for the shaft, so that abrasion is reduced, and the reliability of direction switching of the isolator is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of starter overrunning clutches, and particularly relates to an elastic snap ring assembly for the shaft of an overrunning clutch. Background Art

[0002] In the overrunning clutch of a starter, a fork assembled on a fixed sleeve is axially limited by an arc snap ring. Due to the frequent direction switching of the overrunning clutch, an axial impact is formed on the arc snap ring. After the arc snap ring is subjected to this axial impact force for a long time and undergoes metal fatigue, it is prone to deformation and break out of the card slot of the fixed sleeve, resulting in the failure of the axial positioning of the fork, and further affecting the operation reliability of the overrunning clutch for normal direction switching. Summary of the Invention

[0003] Object of the Invention: In order to overcome the deficiencies in the prior art, the utility model provides an elastic snap ring assembly for the shaft of an overrunning clutch, which provides elasticity through an elastic body during the axial limitation of the fork by the elastic snap ring assembly for the shaft, thereby reducing wear and improving the reliability of the overrunning clutch for direction switching.

[0004] Technical Solution: To achieve the above object, an elastic snap ring assembly for the shaft of an overrunning clutch of the utility model is coaxially assembled on a fixed sleeve of the overrunning clutch and is used for axially limiting a fork installed on the fixed sleeve;

[0005] The elastic snap ring assembly for the shaft includes a snap ring body clamped in a card slot on the fixed sleeve, and an elastic body is arranged on a surface of the snap ring body facing the fork, and the elastic body elastically abuts against the fork.

[0006] Further, a plurality of the elastic bodies are arranged on a surface of the snap ring body facing the fork, and the elastic bodies are distributed in a circumferential array along the circumferential contour of the snap ring body.

[0007] Further, the elastic telescopic direction of the elastic body is parallel to the axis direction of the snap ring body.

[0008] Further, the elastic body is a dome structure composed of a flexible elastic body.

[0009] Further, an elastic body connecting part is correspondingly arranged on the elastic body, and the elastic body is detachably installed on the snap ring body through the elastic body connecting part.

[0010] Further, the snap ring body is a steel ring structure with a thickness adapted to the width of the card slot.

[0011] Further, the snap ring body is composed of two semi-ring bodies connected by a locking member, and the two semi-ring bodies are clamped in the card slot and fastened by the locking member.

[0012] Beneficial effects: In the present utility model, an elastomer provides elasticity during the axial limiting of the fork by the shaft snap ring assembly. The snap ring body serves as the framework for supporting the elastomer, enhancing the ability to withstand axial impact forces during frequent direction switching of the one-way clutch, reducing the probability of metal fatigue, minimizing wear, and improving the reliability and safety of direction switching of the one-way clutch. Brief Description of the Drawings

[0013] Figure 1 It is a schematic exploded view of the structure of the shaft retaining ring assembly.

[0014] Figure 2 It is a schematic structural view of the shaft retaining ring assembly installed on the fixed sleeve of the one-way clutch.

[0015] Figure 3 It is a schematic structural view of the one-way clutch applied with the shaft retaining ring assembly of the present utility model. Detailed Embodiment

[0016] The present utility model will be further described below with reference to the accompanying drawings.

[0017] As Figure 2 and Figure 3 shown, a shaft snap ring assembly for a one-way clutch, the shaft snap ring assembly 3 is coaxially assembled on the fixed sleeve 1 of the one-way clutch, and is used for axially limiting the fork 2 installed on the fixed sleeve 1. As Figure 1 and Figure 3 shown, the shaft snap ring assembly 3 includes a snap ring body 4 clamped in the card slot 10 of the fixed sleeve 1. A surface of the snap ring body 4 facing the fork 2 is provided with an elastomer 5, and the elastomer 5 elastically abuts against the fork 2. In the present utility model, the elastomer 5 provides elasticity during the axial limiting of the fork 2 by the shaft snap ring assembly 3. The snap ring body 4 serves as the framework for supporting the elastomer 5, enhancing the ability to withstand axial impact forces during frequent direction switching of the one-way clutch, reducing the probability of metal fatigue, minimizing wear, and improving the reliability of direction switching of the one-way clutch.

[0018] The elastic expansion and contraction direction of the elastomer 5 is parallel to the axis direction of the snap ring body 4. As Figure 1 shown, in order to ensure the uniform distribution of elastic positioning for the axial limiting of the fork 2, a plurality of the elastomers 5 are provided on a surface of the snap ring body 4 facing the fork 2, and the elastomers 5 are circumferentially arrayed along the circumferential contour of the snap ring body 4, so that the elasticity provided by the elastomers 5 to the fork 2 is more uniform.

[0019] In the present utility model, as a preference, the elastomer 5 is a dome structure composed of a flexible elastomer. When the elastomer 5 elastically contacts the fork 2, the wear between them is less. Even in the case of wear of the elastomer 5, in the present utility model, an elastomer connecting part 6 is correspondingly arranged on the elastomer 5. The elastomer 5 is detachably installed with the snap ring body 4 through the elastomer connecting part 6, and it is relatively convenient to replace the worn elastomer 5.

[0020] As Figure 1 shown, the elastomer connecting part 6 includes a support rod 61 inserted into the installation hole 4a of the snap ring body 4. One end of the support rod 61 is provided with a base 62 corresponding to the elastomer 5, and the elastomer is fixed on the base 62. The other end of the support rod 61 is movably connected with a nut 63, and the support rod 61 is fixed on the snap ring body 4 through the nut 63.

[0021] More specifically, the snap ring body 4 of the present utility model serves as the skeleton for supporting the elastomer 5, and its structural strength is crucial. Therefore, the snap ring body 4 in the present utility model is a steel ring structure with a thickness adapted to the width of the card slot 10.

[0022] Since the snap ring body 4 is a steel ring structure, in order to assemble the snap ring body 4 into the card slot 10 of the fixed sleeve 1, it is necessary to design the structure of the snap ring body 4 in a decentralized manner. Based on this, the snap ring body 4 is composed of two semi-ring bodies 40 connected by a locking member 7. The two semi-ring bodies 40 are clamped in the card slot 10 and fastened by the locking member 7. Among them, the locking member 7 can be a bolt-nut assembly installed on the installation ear 8 of the semi-ring body 40. After the snap ring body 4 is installed in the card slot 10 of the fixed sleeve 1, it is not easy to get out of the slot and cause the axial limit of the fork 2 to fail. Instead, it can ensure that the axial limit of the fork 2 is more stable and safe.

[0023] The above are only the preferred embodiments of the present utility model. It should be noted that: for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. An elastic snap ring assembly for the shaft of an overrunning clutch. The elastic snap ring assembly for the shaft (3) is coaxially assembled on the fixed sleeve (1) of the overrunning clutch and is used for axially limiting the shift fork (2) mounted on the fixed sleeve (1). It is characterized in that: The elastic snap ring assembly for the shaft (3) includes a snap ring body (4) clamped in a card slot (10) on the fixed sleeve (1). An elastic body (5) is arranged on the surface of the snap ring body (4) facing the shift fork (2), and the elastic body (5) elastically abuts against the shift fork (2).

2. The snap ring assembly for the shaft of an overrunning clutch according to claim 1, characterized in that: A plurality of the elastic bodies (5) are arranged on the surface of the snap ring body (4) facing the shift fork (2), and the elastic bodies (5) are distributed in a circumferential array along the circumferential contour of the snap ring body (4).

3. The snap ring assembly for the shaft of an overrunning clutch according to claim 2, characterized in that: The elastic telescopic direction of the elastic body (5) is parallel to the axis direction of the snap ring body (4).

4. The snap ring assembly for the shaft of an overrunning clutch according to claim 2, wherein: The elastic body (5) is a dome structure composed of a flexible elastic body.

5. The snap ring assembly for the shaft of an overrunning clutch according to claim 4, characterized in that: An elastic body connecting portion (6) is correspondingly arranged on the elastic body (5), and the elastic body (5) is detachably installed on the snap ring body (4) through the elastic body connecting portion (6).

6. The shaft snap ring assembly of an overrunning clutch according to claim 4, characterized in that: The snap ring body (4) is a steel ring structure with a thickness adapted to the width of the card slot (10).

7. The snap ring assembly for the shaft of an overrunning clutch according to claim 6, characterized in that: The snap ring body (4) is composed of two semi-ring bodies (40) connected by a locking member (7), and the two semi-ring bodies (40) are clamped in the card slot (10) and fastened by the locking member (7).

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