Novel check-ring-free large-swing-angle tripod assembly

Abstract

The utility model discloses a novel check-ring-free large-swing-angle tripod assembly. The tripod assembly mainly solves the problems that an existing tripod assembly is large in number of parts, troublesome to assemble and high in cost. The inner ball ring is arranged on the circumferential outer wall of the shaft neck, the outer wall of the inner ball ring is a first arc-shaped surface outer ball ring, the inner ball ring is arranged on the outer side of the inner ball ring, and the inner wall of the inner ball ring is a second arc-shaped surface; the retainer is arranged between the inner ball ring and the outer ball ring and is provided with a plurality of pockets; and the pin rollers are arranged in the pocket holes, and the circumferential outer walls of the pin rollers are third arc-shaped surfaces matched with the second arc-shaped surfaces and the first arc-shaped surfaces. According to the novel check-ring-free large-swing-angle type tripod assembly, a gasket, a clamping spring and the check ring are omitted, and common components in traditional design are removed, so that the overall structure is simplified, assembly steps in the production process are reduced, and the potential assembly error risk is reduced.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, and particularly relates to a new type of three-ball pin assembly without a retaining ring and with a large swing angle. Background Art

[0002] The existing three-ball pin assembly mainly includes a three-pin frame, an inner bearing ring, a ball ring, a limit retaining ring and needle rollers. The inner bearing ring is sleeved on the pin shaft of the three-pin frame, the ball ring is sleeved on the inner bearing ring, needle rollers are installed between the inner bearing ring and the ball ring, and the inner bearing ring and the needle rollers are limited by a limit retaining ring clamped on the inner wall of the ball ring.

[0003] It can be seen that the existing three-ball pin assembly has more parts, is more troublesome to assemble, and has a higher cost. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the background art, the utility model provides a new type of three-ball pin assembly without a retaining ring and with a large swing angle, mainly solving the problems that the existing three-ball pin assembly has more parts, is more troublesome to assemble, and has a higher cost.

[0005] The technical solution of the utility model is as follows.

[0006] A new type of three-ball pin assembly without a retaining ring and with a large swing angle includes a bracket, on which a journal is provided, and further includes

[0007] an inner ball ring, arranged on the circumferential outer wall of the journal, and its outer wall is a first arc surface,

[0008] an outer ball ring, arranged on the outside of the inner ball ring, and its inner wall is a second arc surface;

[0009] a cage, arranged between the inner ball ring and the outer ball ring, and provided with a plurality of pocket holes;

[0010] roller pins, arranged in the pocket holes, and the circumferential outer wall thereof is a third arc surface that matches the second arc surface and the first arc surface.

[0011] The third arc surface has a structure that is higher in the middle and lower at both ends.

[0012] There are three journals.

[0013] The angle formed between adjacent journals is 120°.

[0014] There are more than 6 roller pins.

[0015] The roller pins are evenly distributed on the cage.

[0016] The beneficial effects of the present utility model are as follows: The present utility model provides a new type of three-ball pin assembly with large swing angle and no retaining ring, eliminating washers, circlips and retaining rings. By removing these components commonly found in traditional designs, not only is the overall structure simplified, but also the assembly steps in the production process are reduced, and the potential risk of assembly errors is lowered. Design of elliptical rollers: Compared with traditional needle rollers, elliptical rollers increase the contact area with the ball ring, enabling the load to be more evenly distributed between the rollers and the ball ring. This not only improves the load-bearing capacity but also extends the service life of the parts. The elliptical shape design also allows the rollers to roll more smoothly inside the ball ring, reducing friction and wear. Brief Description of the Drawings

[0017] Figure 1 It is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0018] Figure 2 It is a schematic diagram after the outer ball ring of an embodiment of the present utility model swings.

[0019] Figure 3 It is a partial three-dimensional schematic diagram of an embodiment of the present utility model. Detailed Description of the Preferred Embodiment

[0020] The present utility model will be further described below with reference to the drawings: As shown in the figure, a new type of three-ball pin assembly with large swing angle and no retaining ring includes a bracket 1, on which a journal 2 is provided. It also includes an inner ball ring 3, which is arranged on the circumferential outer wall of the journal, and its outer wall is a first arc surface 31, and an outer ball ring 4, which is arranged on the outside of the inner ball ring, and its inner wall is a second arc surface 41; a cage 5, which is arranged between the inner ball ring and the outer ball ring and is provided with a number of pocket holes; rollers 6, which are arranged in the pocket holes, and the circumferential outer wall thereof is a third arc surface 61 that cooperates with the second arc surface and the first arc surface. Eliminate washers, circlips and retaining rings: By removing these components commonly found in traditional designs, not only is the overall structure simplified, but also the assembly steps in the production process are reduced, and the potential risk of assembly errors is lowered. Design of elliptical rollers: Compared with traditional needle rollers, elliptical rollers increase the contact area with the ball ring, enabling the load to be more evenly distributed between the rollers and the ball ring. This not only improves the load-bearing capacity but also extends the service life of the parts. The elliptical shape design also allows the rollers to roll more smoothly inside the ball ring, reducing friction and wear.

[0021] Direct cooperation between the three-pin bracket and the ball ring assembly: This direct cooperation design improves the compactness and strength of the overall structure. It reduces the relative movement between parts, thereby improving the stability and reliability of the three-ball pin assembly.

[0022] The design of the elliptical roller enables the outer ball ring and the inner ball ring to achieve a larger swing angle movement. This design increases the flexibility and adaptability of the system, enabling it to maintain stable performance in applications with complex road conditions or high-frequency vibrations.

[0023] Referring to Figure 2 , when the assembly swings, the outer ball ring and the roller can be movably engaged through the third arc surface and the second arc surface that are in sliding fit. The outer ball ring and the journal can adjust the angle freely to ensure smooth operation and reduce friction. This design can effectively decompose the external torque during vibration and swing. This not only reduces the impact and damage to the three-ball pin assembly but also improves the service life of the three-ball pin assembly and reduces noise.

[0024] In this embodiment, as shown in the figure, the third arc surface has a structure that is higher in the middle and lower at both ends. Specifically, it can be a structure similar to an ellipse, that is, higher in the middle, lower at both ends, and the two ends are symmetrical.

[0025] In this embodiment, as shown in the figure, there are three journals.

[0026] In this embodiment, as shown in the figure, the angle formed between adjacent journals is 120°.

[0027] In this embodiment, as shown in the figure, there are more than 6 rollers.

[0028] In this embodiment, as shown in the figure, the rollers are evenly distributed on the cage. It can better disperse the pressure.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0031] The embodiments described with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation of the present utility model. The embodiments should not be regarded as a limitation of the present utility model, but any improvement made based on the spirit of the present utility model should be within the protection scope of the present utility model.

Claims

1. A new type of three-ball pin assembly with large swing angle without retaining ring, comprising a bracket (1), and a journal (2) is provided on the bracket, characterized in that: Further included is an inner spherical ring (3) provided on the circumferential outer wall of the journal, and its outer wall is a first arc surface (31), an outer spherical ring (4) provided on the outside of the inner spherical ring, and its inner wall is a second arc surface (41); a cage (5) provided between the inner spherical ring and the outer spherical ring and provided with a plurality of pocket holes; rollers (6) provided in the pocket holes, and the circumferential outer wall thereof is a third arc surface (61) that cooperates with the second arc surface and the first arc surface.

2. The novel three-ball pin assembly with large swing angle without retaining ring according to claim 1, characterized in that: The third arc surface has a structure with a higher middle and lower ends.

3. A novel three-ball pin assembly with large swing angle and no retaining ring according to claim 2, characterized in that: There are three journals.

4. A novel three-ball pin assembly with large swing angle and no retaining ring according to claim 3, characterized in that: The angle formed between adjacent journals is 120°.

5. A novel three-ball pin assembly with large swing angle and no retaining ring according to claim 4, characterized in that: There are more than 6 rollers.

6. A novel three-ball pin assembly with large swing angle without retaining ring according to claim 5, characterized in that: The rollers are evenly distributed on the cage.

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