CN216343521U

CN216343521U - Fixed ball cage constant velocity universal joint

Info

Publication number: CN216343521U
Application number: CN202122597450.1U
Authority: CN
Inventors: 陆建春; 陈小敏
Original assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Current assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-04-19
Anticipated expiration: 2031-10-27

Abstract

The utility model relates to the technical field of universal joints, in particular to a fixed ball cage constant velocity universal joint which can realize light weight, reduce process difficulty, improve strength and prolong service life. The technical purpose of the utility model is realized as follows: the utility model provides a novel fixed ball cage constant velocity cardan joint, comprises bell housing, star, eccentric holder, steel ball, the interior sphere center and the coincidence of interior lane center of bell housing, the outer sphere center and the coincidence of outer lane center of star, the fenestrate center and the outer sphere center of eccentric holder have the eccentricity, and fenestrate center and interior sphere center have the eccentricity, and two eccentricities are the same, opposite direction.

Description

Fixed ball cage constant velocity universal joint

Technical Field

The utility model relates to the technical field of universal joints, in particular to a fixed ball cage constant velocity universal joint.

Background

The existing fixed type constant velocity universal joint with a ball cage consists of an outer bell housing 1, an inner race 2, a retainer 3 and a steel ball 4, and is shown in an attached figure 1. The equal angular speed transmission torque and the rotation motion are realized, and are determined by the eccentricity of the inner ball track center A1 and the inner spherical surface center A2 of the outer shell 1 (see the attached figure 2) and the eccentricity of the outer ball track center B1 and the outer spherical surface center B2 of the inner sleeve 2 (see the attached figure 3), which are equal in size and opposite in direction, while the outer spherical surface center C1, the inner spherical surface center C2, the window hole center C3 (see the attached figure 4), the inner spherical surface center A2 of the outer shell 1 and the outer spherical surface center B2 of the inner sleeve 2 of the retainer 3 coincide.

The existing fixed ball cage constant velocity universal joint realizes equal angular velocity transmission torque and rotary motion, depends on the eccentricity between the center of an inner ball path of a bell-shaped shell and the center of an inner spherical surface, is consistent with the eccentricity between the center of an outer ball path of a star-shaped sleeve and the center of an outer spherical surface, has large inner cavity space of the bell-shaped shell and large outline of the star-shaped sleeve, and is not beneficial to light weight of parts.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the background technology and provide a fixed constant velocity universal joint of a ball cage, which can realize light weight, reduce the process difficulty, improve the strength and prolong the service life.

The technical purpose of the utility model is realized as follows: a fixed ball cage constant velocity universal joint comprises a bell housing, an inner ball path center, an outer ball path center and an eccentric retainer and a steel ball, wherein the inner ball surface center of the bell housing is superposed with the inner ball path center, the outer ball surface center of the inner ball path center is superposed with the outer ball path center, the center of a window hole of the eccentric retainer and the center of the outer ball surface center have eccentric distances, the center of the window hole and the center of the inner ball surface center have eccentric distances, and the two eccentric distances have equal sizes and opposite directions.

Preferably, the outer spherical surfaces of two opposite window holes of the eccentric holder are made into a plane.

The utility model has the beneficial effects that:

1. compared with the same specification, the inner cavity structure of the bell-shaped shell is reduced, the outline of the star-shaped sleeve is reduced, and the light weight of parts is achieved;

2. the utility model realizes constant-speed torque transmission and rotary motion, the prior technical scheme needs to meet the requirement that the ball paths of the bell-shaped shell part and the star-shaped sleeve part are equal to the spherical surface eccentricity, and the process has excellent guarantee capability as long as the two eccentricities of the eccentric retainer part are equal;

3. the outer spherical surface of the eccentric retainer is aligned with the window hole and designed into a plane, so that the retainer is ensured to be smoothly arranged in the inner cavity of the bell-shaped shell, meanwhile, the six window holes of the retainer can be completely consistent, the strength of the retainer is improved, and the service life of the retainer is prolonged.

Drawings

Fig. 1 is a schematic structural view of a conventional fixed type ball cage constant velocity universal joint.

Fig. 2 is a schematic structural view of a conventional bell housing.

Fig. 3 is a schematic view of a conventional inner race.

Fig. 4 is a schematic structural view of a conventional cage.

Fig. 5 is a schematic structural view of a conventional cage.

FIG. 6 is a second schematic structural diagram of the present invention.

Fig. 7 is a schematic structural diagram of an outer bell housing provided by the present invention.

Fig. 8 is a schematic structural view of the inner race provided by the present invention.

Fig. 9 is one of the structural schematic diagrams of the cage provided by the present invention.

Fig. 10 is a second schematic structural view of the retainer provided by the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, but the present invention is not limited to the following examples, so that the objects, solutions and advantages of the present invention can be more clearly understood by those skilled in the art.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified and limited, specific meanings of the general terms in the present invention may be specifically understood by those skilled in the art.

The utility model provides a fixed ball cage constant velocity universal joint, which consists of an outer bell housing 1, an inner race 2, an eccentric retainer 3 and a steel ball 4, and is shown in the attached figure 6. Wherein, the outer shell 1 is an outer shell 1 element which is provided with a ball channel arranged along the axial section direction on the supporting spherical surface and is provided with a transmission connection structure, and the center A2 of the inner spherical surface of the outer shell 1 is coincided with the center A1 of the inner ball channel, see the attached figure 7. The inner race 2 is a spherical outer bearing surface with a raceway in the axial cross-sectional direction and an internally splined annular member, and the center B2 of the outer spherical surface of the inner race 2 coincides with the center B1 of the outer raceway, see fig. 8. The eccentric retainer 3 is a spherical element which is provided with an inner spherical bearing surface and an outer spherical bearing surface and is provided with a group of steel ball 4 positioning window holes along the circumference, the center C3 of the window hole of the eccentric retainer 3 and the center C1 of an outer spherical surface have eccentricity, and the center C3 of the window hole and the center C2 of an inner spherical surface have eccentricity. The two eccentricities are equal and opposite with respect to the center C3 of the window, see fig. 9. The steel balls 4 are rolling bodies and play a role in transmitting torque. In addition, in order to smoothly realize the installation of the eccentric retainer 3 into the inner cavity of the outer shell 1, two planes are milled on the outer spherical surfaces of two opposite window holes 5 in the eccentric retainer 3, as shown in the attached drawing 10.

The fixed ball cage constant velocity universal joint provided by the utility model realizes equal angular velocity transmission torque and rotary motion, depends on the eccentric distance between the center of the window hole of the retainer and the center of the inner spherical surface, and the eccentric distance between the center of the window hole of the retainer and the center of the outer spherical surface, and requires that the two are equal in size and opposite in direction, while the center of the inner spherical channel of the bell-shaped shell is coincided with the center of the inner spherical surface, and the center of the outer spherical channel of the inner star sleeve is coincided with the center of the outer spherical surface.

The above description is only a preferred embodiment of the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a fixed ball cage constant velocity universal joint, comprises bell housing (1), star cover (2), eccentric holder (3), steel ball (4), its characterized in that: the center (A2) of the inner spherical surface of the outer shell (1) is coincided with the center (A1) of the inner spherical surface, the center (B2) of the outer spherical surface of the inner star sleeve (2) is coincided with the center (B1) of the outer spherical surface, the center (C3) of the window hole of the eccentric retainer (3) and the center (C1) of the outer spherical surface have eccentricity, the center (C3) of the window hole and the center (C2) of the inner spherical surface have eccentricity, and the eccentricity is equal in size and opposite in direction.

2. A fixed ball cage constant velocity joint as set forth in claim 1, wherein: the outer spherical surfaces of two opposite window holes (5) in the eccentric retainer (3) are made into a plane (D).