CN210218464U - Assembly structure between inner star wheel and shaft head - Google Patents

Abstract

The utility model provides an assembly structure between interior star gear and spindle nose, including the interior star gear that has the installation cavity, inlay the spindle nose in the installation cavity and install the jump ring on the spindle nose, be equipped with interior jump ring groove on the inner wall of interior star gear, be equipped with outer jump ring groove on the lateral wall of spindle nose, the jump ring is arranged in outer jump ring groove, and the jump ring is arranged in interior jump ring groove, and the both ends of jump ring all are equipped with the kink of inwards buckling. The utility model discloses the both ends of well jump ring all are equipped with the kink to utilize the contact action of kink and spindle nose, reduce the volume of rocking of jump ring for the spindle nose, thereby make the centering nature of jump ring and spindle nose, and spindle nose and interior star gear better. And the spline guide groove of the inner star wheel is in a step shape and used for guiding the clamp spring to enter the groove and avoiding clamping stagnation. The shaft head is designed into a large groove structure under the condition of ensuring the holding force, and meanwhile, the shaft head is provided with a reasonable clamp spring groove so as to improve the centering property and the leading-in property of the inner star wheel during assembly.

Description

Assembly structure between inner star wheel and shaft head

Technical Field

The utility model relates to an assembly structure especially relates to an assembly structure between interior star gear and spindle nose.

Background

The current automobile market has a certain share of demands for four-wheel drive vehicle types, and the four-wheel drive vehicle types generally use a longitudinal transmission shaft. With increasing customer NVH requirements, mainframe plants typically employ longitudinal drive shafts with high speed joints. Whether the high-speed joint is fixed or moved, the high-speed joint and the shaft head are assembled in a press fitting mode and are fixed together by a clamp spring and the shaft head. The high-speed joint shaft head press-fitting structure relates to parts such as a high-speed joint, a shaft head, a clamp spring and the like, wherein the high-speed joint comprises an inner star wheel; in the prior art, due to the fact that the clamp spring is not reasonable in structural design, the shaft head and the inner star wheel are poor in centering performance, and the like, reworking and repairing are caused, and production takt is influenced.

Therefore, an assembly structure which enables the shaft head and the inner star wheel to be aligned better is needed.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing, the technical problem to be solved by the utility model is to provide an assembly structure between interior star gear and spindle nose, its spindle nose is better with interior star gear's centering nature.

In order to achieve the purpose, the utility model provides an assembly structure between interior star gear and spindle nose, including the interior star gear that has the installation cavity, inlay the spindle nose in the installation cavity and install the jump ring on the spindle nose, be equipped with interior jump ring groove on the inner wall of interior star gear, be equipped with outer jump ring groove on the lateral wall of spindle nose, the jump ring is arranged in outer jump ring groove, just the jump ring is arranged in interior jump ring groove, the both ends of jump ring all are equipped with the kink of inside buckling.

Furthermore, the clamp spring further comprises an arc-shaped arc section, and two ends of the arc section are fixedly connected with the two bending parts respectively.

Further, the clamp spring is made of round steel.

Further, the clamp spring is of an integrated structure.

Furthermore, one end of the side wall of the mounting cavity is provided with an inner guide inclined plane.

Furthermore, the inner guide inclined planes are multiple, all the inner guide inclined planes are distributed at intervals along the axial direction of the inner star wheel, a transition surface is arranged between every two adjacent inner guide inclined planes, and the transition surfaces are parallel to the axis of the inner star wheel.

Furthermore, one end of the shaft head is provided with an outer guide inclined plane.

Further, be equipped with the internal spline on the lateral wall of installation cavity, be equipped with the external spline on the spindle nose, the internal spline cooperatees with the external spline.

As above, the utility model relates to an assembly structure between interior star gear and spindle nose has following beneficial effect:

the utility model discloses the both ends of well jump ring all are equipped with the kink of inside buckling to utilize the contact effect of kink and spindle nose, reduce the jump ring for the axle head shake the momentum, reduce the offset of jump ring for the axle head promptly, thereby make the centering nature of jump ring and axle head better, and make the centering nature of axle head and interior star gear better.

Drawings

Fig. 1 is the schematic structural diagram of the middle clamp spring of the present invention.

Fig. 2 is a schematic structural view of the inner star wheel of the present invention.

Fig. 3 is a schematic structural diagram of the middle shaft head of the present invention.

Description of the element reference numerals

1 internal star wheel

11 mounting cavity

111 inner snap spring groove

112 inner guide slope

113 transition surface

114 internal spline

2 spindle nose

21 outer jump ring groove

22 outer guide slope

23 external spline

3 circlip

31 a bent part

32 arc segment

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

It should be understood that the structures, ratios, sizes, etc. shown in the drawings of the present application are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, change of the ratio relationship or adjustment of the sizes should still fall within the scope covered by the technical contents disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are only for convenience of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the modifications can be changed or adjusted without substantial technical changes and modifications.

As shown in fig. 1 to 3, the utility model provides an assembly structure between interior star gear and spindle nose, including interior star gear 1 that has installation cavity 11, inlay spindle nose 2 in installation cavity 11, and install jump ring 3 on spindle nose 2, be equipped with interior jump ring groove 111 on the inner wall of interior star gear 1, be equipped with outer jump ring groove 21 on the lateral wall of spindle nose 2, jump ring 3 is arranged in outer jump ring groove 21, and jump ring 3 is arranged in interior jump ring groove 111, and jump ring 3's both ends all are equipped with the kink 31 of inside kink. The utility model discloses well jump ring 3's both ends all are equipped with the kink 31 of inwards buckling to utilize the contact action of kink 31 and spindle nose 2, reduce jump ring 3 for spindle nose 2 shake the momentum, reduce jump ring 3 for spindle nose 2's offset promptly, thereby make jump ring 3 better with spindle nose 2's centering nature, and make spindle nose 2 better with the centering nature of interior star gear 1.

The utility model discloses well spindle nose 2 and interior star gear 1 to the degree of proximity of the axis of neutral finger spindle nose 2 and the axis of interior star gear 1, spindle nose 2 and interior star gear 1 to the neutral axis indicate the axis of spindle nose 2 more closely with the axis of interior star gear 1 better, or axis overlap ratio between them is higher.

As shown in fig. 1, the clamp spring 3 further includes an arc-shaped arc section 32, and two ends of the arc section 32 are respectively fixedly connected to the two bending portions 31. In this embodiment, the arc section 32 is arc-shaped, and the clamp spring 3 is C-shaped as a whole. The distance between the bending part 31 and the center of the arc section 32 is smaller than the radius of the arc section 32.

The clamp spring 3 in this embodiment is made of round steel. And jump ring 3 is the integral type structure in this embodiment, and jump ring 3 is made by a round steel promptly to guarantee that jump ring 3 has good elasticity and intensity.

As shown in fig. 2, the left end of the side wall of the installation cavity 11 in this embodiment is provided with an inner guide slope 112. In the assembling process, the shaft head 2 provided with the clamp spring 3 is embedded into the mounting cavity 11 from left to right, and the clamp spring 3 and the shaft head 2 are guided to be smoothly embedded into the mounting cavity 11 by utilizing the contact action of the inner guide inclined plane 112 and the clamp spring 3, so that the clamp spring 3 can be smoothly embedded into the inner clamp spring groove 111. Meanwhile, in the embodiment, the number of the inner guide inclined planes 112 is multiple, all the inner guide inclined planes 112 are distributed at intervals along the axial direction of the inner star wheel 1, a transition surface 113 is arranged between every two adjacent inner guide inclined planes 112, and the transition surface 113 is parallel to the axis of the inner star wheel 1, so that the clamp spring 3 and the spindle head 2 are guided to be smoothly embedded into the installation cavity 11 step by utilizing the inner guide inclined planes 112. In this embodiment, all the inner guide inclined planes 112 and the transition planes 113 form a guide groove of the inner star wheel 1, and the guide groove is stepped to guide the snap spring 3 to smoothly enter the inner snap spring groove 111, so as to avoid clamping stagnation; the stepped guide groove is an important point in centering design, and can ensure that the centering performance of the clamp spring 3 and the inner star wheel 1 and the centering performance of the shaft head 2 and the inner star wheel 1 are better. The guide groove is also referred to as a spline guide groove.

As shown in fig. 3, the right end of the stub shaft 2 in this embodiment is provided with an outer guide slope 22. In the assembling process, the shaft head 2 provided with the clamp spring 3 is embedded into the mounting cavity 11 from left to right, and the shaft head 2 is guided to be smoothly embedded into the mounting cavity 11 by utilizing the contact effect of the outer guide inclined plane 22 and the inner wall of the inner star wheel 1.

As shown in fig. 2 and 3, in this embodiment, the side wall of the mounting cavity 11 is provided with an internal spline 114, the spindle head 2 is provided with an external spline 23, and the internal spline 114 is matched with the external spline 23, so that the spindle head 2 is effectively limited to rotate along the circumferential direction relative to the internal star wheel 1, and the spindle head 2 is limited to move along the radial direction relative to the internal star wheel 1. In addition, the shaft head 2 is effectively limited to move axially relative to the inner star wheel 1 by combining the matching action of the snap spring 3, the outer snap spring groove 21 and the inner snap spring groove 111. The assembling structure between the inner star wheel and the shaft head is also called as a connecting structure between the inner star wheel and the shaft head in the embodiment. The shaft head 2 in this embodiment is a shaft head of a longitudinal transmission shaft.

The inner star wheel 1 in the embodiment is a component part in a high-speed joint, and the assembling structure between the inner star wheel and the shaft head is also called a high-speed joint assembling self-centering structure. This embodiment is through optimizing the structural design of jump ring 3, has reduced the offset of jump ring 3 for spindle nose 2 during the assembly for jump ring 3 and spindle nose 2 are changeed and are impressed in interior star gear 1, and have solved the problem of spindle nose 2 and the difficult centering of interior star gear 1, have promoted the assembly qualification rate once, have shortened production cycle. In this embodiment, the guide groove of the inner star wheel 1 adopts the stepped design, so that the snap spring 3 can be guided to smoothly enter the installation cavity 11 and the inner snap spring groove 111, and clamping stagnation is avoided. The included angle between the outer guide inclined plane 22 on the shaft head 2 and the radial section is larger, the shaft head 2 is designed to be of a large groove structure under the condition that the holding force is ensured, and meanwhile, the shaft head 2 is provided with a reasonable outer clamp spring groove 21 so as to improve the centering performance and the leading-in performance of the inner star wheel 1 during assembly. In the embodiment, the snap spring 3 can be smoothly pressed into the inner star wheel 1 in all limit states.

To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (8)

1. The utility model provides an assembly structure between interior star gear and spindle nose, its characterized in that, including interior star gear (1) that has installation cavity (11), inlay spindle nose (2) in installation cavity (11) and install jump ring (3) on spindle nose (2), be equipped with interior jump ring groove (111) on the inner wall of interior star gear (1), be equipped with outer jump ring groove (21) on the lateral wall of spindle nose (2), jump ring (3) are arranged in outer jump ring groove (21), just jump ring (3) are arranged in interior jump ring groove (111), the both ends of jump ring (3) all are equipped with kink (31) of inside kink.

2. The assembly structure between the inner star wheel and the shaft head as claimed in claim 1, wherein the snap spring (3) further comprises an arc-shaped arc section (32), and two ends of the arc section (32) are fixedly connected with the two bending parts (31) respectively.

3. The assembly structure between the inner star wheel and the shaft head as claimed in claim 1, wherein the snap spring (3) is made of round steel.

4. The assembly structure between the inner star wheel and the shaft head as claimed in claim 1, wherein the snap spring (3) is of an integrated structure.

5. The assembly structure between an besides-star wheel and a spindle head as claimed in claim 1, characterized in that one end of the side wall of the mounting cavity (11) is provided with an inner guiding bevel (112).

6. The assembly structure between the inner star wheel and the spindle head according to claim 5, characterized in that the inner guide inclined planes (112) are multiple, all the inner guide inclined planes (112) are distributed at intervals along the axial direction of the inner star wheel (1), a transition surface (113) is arranged between every two adjacent inner guide inclined planes (112), and the transition surfaces (113) are parallel to the axis of the inner star wheel (1).

7. The assembly structure between an besides-star wheel and a shaft head as claimed in claim 1, characterized in that one end of the shaft head (2) is provided with an outer guide bevel (22).

8. The assembling structure between the inner star wheel and the shaft head as claimed in claim 1, wherein the side wall of the mounting cavity (11) is provided with an inner spline (114), the shaft head (2) is provided with an outer spline (23), and the inner spline (114) is matched with the outer spline (23).

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