Ball cage type constant velocity universal joint

Abstract

The utility model provides a ball cage type constant velocity universal joint, and belongs to the technical field of machinery. The ball cage type constant velocity universal joint solves the problem that the rotatable angle of the ball cage type constant velocity universal joint is not large enough. The ball cage type constant velocity universal joint comprises a barrel-shaped shell, a steel ball, an annular star-shaped sleeve and an annular retainer, the steel ball, the annular star-shaped sleeve and the annular retainer are all arranged in the barrel-shaped shell, the retainer is arranged between the star-shaped sleeve and the barrel-shaped shell, an inner ball groove is formed in the outer side of the star-shaped sleeve, an outer ball groove is correspondingly formed in the inner side of the barrel-shaped shell, and the inner ball groove is communicated with the outer ball groove. A window is formed in the retainer in a radial penetrating mode, the steel ball is arranged in the window, the two sides of the steel ball are located in the inner ball groove and the outer ball groove respectively, the end, close to the open end of the cylindrical shell, of the retainer is an outer end, a first spherical face is arranged on the inner side of the outer end of the retainer, and the starlike sleeve is arranged close to the outer end of the retainer. And a spherical surface II attached to the spherical surface I is arranged on the outer side of the starlike sleeve. The ball cage type constant velocity universal joint has the advantage of being wide in application range.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a ball cage type constant velocity universal joint. Background Art

[0002] In automobile transmission systems and other systems, in order to achieve power transmission between two rotating shafts whose axes do not overlap, a universal joint transmission device must be used. A universal joint transmission device is generally composed of a universal joint and a transmission shaft, and sometimes also includes an intermediate support. The universal joint is the "joint" part of the universal joint transmission device in the automobile transmission system, which allows the angle between the connected parts to change within a certain range and allows a certain range of relative telescopic movement between the connected parts.

[0003] The ball cage type constant velocity joint is a type of universal joint, which generally includes a housing, a star-shaped sleeve disposed in the housing, a retaining frame disposed between the housing and the star-shaped sleeve, and a steel ball disposed in the retaining frame and in conflict with both the housing and the star-shaped sleeve.

[0004] However, in the existing ball cage type constant velocity universal joint, the rotation angle of the star sleeve relative to the retaining frame is not large enough to meet the use requirements of some transmission structures. Utility Model Content

[0005] The utility model aims at the above problems existing in the prior art, and proposes a ball cage type constant velocity universal joint, which solves the problem that the rotation angle of the ball cage type constant velocity universal joint is not large enough.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A ball cage type constant velocity universal joint comprises a barrel-shaped cylindrical shell, steel balls all arranged in the cylindrical shell, an annular star-shaped sleeve and an annular retaining frame, wherein the retaining frame is arranged between the star-shaped sleeve and the cylindrical shell, the outer side of the star-shaped sleeve has an inner ball track, the inner side of the cylindrical shell has an outer ball track correspondingly, a window is radially penetrated on the retaining frame, the steel ball is arranged in the window and the two sides of the steel ball are respectively located in the inner ball track and the outer ball track, and is characterized in that the end of the retaining frame close to the opening end of the cylindrical shell is the outer end, the inner side of the outer end of the retaining frame has a spherical surface one, the star-shaped sleeve is arranged close to the outer end of the retaining frame, and the outer side of the star-shaped sleeve has a spherical surface two abutting against the spherical surface one.

[0008] In the ball cage type constant velocity universal joint, the spherical surface one and the spherical surface two are both partial spherical surfaces, and the star sleeve relies on the spherical surface two to abut against the spherical surface one of the retaining frame, so that the star sleeve can rotate freely in the circumferential direction relative to the retaining frame without being blocked by the retaining frame, so that the star sleeve can rotate at a larger angle relative to the retaining frame, which can meet the use requirements of most transmission structures and has a wide range of applications.

[0009] In the above-mentioned ball cage type constant velocity universal joint, the inner side of the open end of the cylindrical shell has a concave annular mounting groove, and an annular retaining ring and an annular clamping ring are arranged in the mounting groove. The retaining ring partially extends out of the mounting groove, and the clamping ring is made of rubber material and is distributed along the axial direction of the cylindrical shell with the retaining ring. One end of the clamping ring abuts against the retaining ring and presses the retaining ring against the groove wall of the mounting groove. The retaining ring is used to prevent the structure inside the cylindrical shell from falling out, and the clamping ring is used to clamp the retaining ring to ensure the stability of the retaining ring position.

[0010] In the above-mentioned ball cage type constant velocity universal joint, the clamping ring has a concave annular positioning opening at one end facing the retaining ring, and the retaining ring is partially embedded in the positioning opening.

[0011] In the above-mentioned ball cage type constant velocity universal joint, the number of the steel balls, inner ball tracks and outer ball tracks is the same and is multiple, and the multiple steel balls, inner ball tracks and outer ball tracks are arranged one by one.

[0012] In the above-mentioned ball cage type constant velocity universal joint, the outer ball track is in the shape of an elongated strip and its length direction is consistent with the axial direction of the cylindrical shell.

[0013] In the above-mentioned ball cage type constant velocity universal joint, the distance between the window and the outer end of the retainer is smaller than the distance between the window and the inner end of the retainer.

[0014] In the above-mentioned ball cage type constant velocity universal joint, the inner side wall of the inner end of the retaining frame is recessed to form an annular groove in a circular shape, and the diameter of the bottom of the annular groove is not less than the diameter of the spherical surface one.

[0015] Compared with the prior art, in the present ball cage type constant velocity universal joint, the star sleeve relies on the spherical surface 2 to abut against the spherical surface 1 of the retaining frame, so that the star sleeve can rotate freely in the circumferential direction relative to the retaining frame without being blocked by the retaining frame, so that the star sleeve can rotate at a larger angle relative to the retaining frame, which can meet the use requirements of most transmission structures and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of the ball cage type constant velocity universal joint.

[0017] In the figure, 1, cylindrical shell; 2, steel ball; 3, star-shaped sleeve; 4, retaining frame; 5, inner ball track; 6, outer ball track; 7, window; 8, spherical surface one; 9, spherical surface two; 10, mounting groove; 11, retaining ring; 12, clamping ring; 13, annular groove. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1 As shown, the ball cage type constant velocity universal joint comprises a cylindrical shell 1 in a cylindrical shape, steel balls 2 arranged in the cylindrical shell 1, a ring-shaped star sleeve 3 and a ring-shaped retainer 4, and the retainer 4 is arranged between the star sleeve 3 and the cylindrical shell 1.

[0020] The outer side of the star-shaped sleeve 3 has an inner ball channel 5 which is concave and in the shape of a long strip. The length direction of the inner ball channel 5 is consistent with the axial direction of the star-shaped sleeve 3 and the two ends of the inner ball channel 5 are connected to the end faces of the two ends of the star-shaped sleeve 3. An outer ball channel 6 is provided on the inner side of the cylindrical shell 1 at a position corresponding to the position of the inner ball channel 5. The outer ball channel 6 is in the shape of a long strip and its length direction is consistent with the axial direction of the cylindrical shell 1. The end of the outer ball channel 6 is connected to the end face of the open end of the cylindrical shell 1.

[0021] A window 7 is radially formed on the retainer 4, the steel ball 2 is arranged in the window 7, and the two sides of the steel ball 2 are respectively located in the inner ball track and the outer ball track 6, and the inner and outer sides of the steel ball 2 can respectively abut against the bottom surface of the inner ball track and the outer ball track 6. In this embodiment, the number of the steel balls 2, the inner ball track and the outer ball track 6 is the same, which are all six, and six windows 7 are formed on the side of the retainer 4, and the six windows 7 are evenly distributed around the axis of the retainer 4, and the six steel balls 2 are arranged in the six windows 7 one by one; the distance between the window 7 and the outer end of the retainer 4 is smaller than the distance between the window 7 and the inner end of the retainer 4.

[0022] The end of the retainer 4 close to the open end of the cylindrical shell 1 is the outer end, and the inner side of the outer end has a spherical surface 8, and the inner side wall of the inner end of the retainer 4 is concave to form a circular annular groove 13, and the diameter of the bottom of the annular groove 13 is not less than the diameter of the spherical surface 8. The star sleeve 3 is arranged close to the outer end of the retainer 4, and there is a gap between the star sleeve 3 and the end of the rear end of the retainer 4, and the outer side of the star sleeve 3 has a spherical surface 9 abutting against the spherical surface 8.

[0023] The inner side of the open end of the cylindrical shell 1 has a recessed circular mounting groove 10, and a circular ring 11 and a circular clamping ring 12 are arranged in the mounting groove 10. The retaining ring 11 partially extends out of the mounting groove 10. The clamping ring 12 is made of rubber material and is distributed along the axial direction of the cylindrical shell 1 with the retaining ring 11. The clamping ring 12 is closer to the end of the open end of the cylindrical shell 1 than the retaining ring 11. One end of the clamping ring 12 abuts against the retaining ring 11 and presses the retaining ring 11 tightly against the groove wall of the mounting groove 10. In this embodiment, the end of the clamping ring 12 facing the retaining ring 11 has a recessed circular positioning opening, and the retaining ring 11 is partially embedded in the positioning opening.

[0024] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A ball cage type constant velocity universal joint, comprising a barrel-shaped cylindrical shell (1), steel balls (2) arranged in the cylindrical shell (1), an annular star sleeve (3) and an annular retainer (4), wherein the retainer (4) is arranged between the star sleeve (3) and the cylindrical shell (1), the outer side of the star sleeve (3) has an inner ball track (5), and the inner side of the cylindrical shell (1) has an outer ball track (6) correspondingly, a window (7) is radially penetrated on the retainer (4), the steel ball (2) is arranged in the window (7) and the two sides of the steel ball (2) are respectively located in the inner ball track and the outer ball track (6), characterized in that: The end of the retainer (4) close to the open end of the cylindrical shell (1) is the outer end, and the inner side of the outer end of the retainer (4) has a spherical surface one (8). The star sleeve (3) is arranged close to the outer end of the retainer (4), and the outer side of the star sleeve (3) has a spherical surface two (9) abutting against the spherical surface one (8). The inner side of the open end of the cylindrical shell (1) has a recessed circular mounting groove (10), and a ring-shaped retaining ring (11) and a circular clamping ring (12) are arranged in the mounting groove (10). The retaining ring (11) partially protrudes from the mounting groove (10), and the clamping ring (12) is made of rubber material and is distributed along the axial direction of the cylindrical shell (1) with the retaining ring (11). One end of the clamping ring (12) abuts against the retaining ring (11) and presses the retaining ring (11) against the groove wall of the mounting groove (10).

2. The ball cage type constant velocity universal joint according to claim 1, characterized in that: One end of the clamping ring (12) facing the retaining ring (11) has a recessed annular positioning opening, and the retaining ring (11) is partially embedded in the positioning opening.

3. The ball cage type constant velocity universal joint according to claim 1 or 2, characterized in that: The number of the steel balls (2), the inner ball track (5) and the outer ball track (6) is the same and all are several, and the several steel balls (2), the inner ball track (5) and the outer ball track (6) are arranged in one-to-one correspondence.

4. The ball cage type constant velocity universal joint according to claim 1 or 2, characterized in that: The outer ball track (6) is in the shape of an elongated strip, and its length direction is consistent with the axial direction of the cylindrical shell (1).

5. The ball cage type constant velocity universal joint according to claim 1 or 2, characterized in that: The distance between the window (7) and the outer end of the retaining frame (4) is smaller than the distance between the window (7) and the inner end of the retaining frame (4).

6. The ball cage type constant velocity universal joint according to claim 1 or 2, characterized in that: The inner side wall of the inner end of the retaining frame (4) is recessed to form a circular annular groove (13), and the diameter of the bottom of the annular groove (13) is not less than the diameter of the spherical surface (8).

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