Self-centering anti-loose suspension ball head

Abstract

The utility model provides a kind of from centering anti-loose suspension ball head, belong to automobile parts technical field.It solves the problem of insufficient anti-loose effect in prior art prone to wear.The utility model includes spherical shell main body, ball pin and dust cover, cavity structure bottom is equipped with lower ball seat, installation groove is formed in spherical shell main body, upper ball seat is installed in the lower end of spherical shell main body opening and the lower end of upper ball seat and installation groove are inlaid, ball head is installed between lower ball seat and upper ball seat, the opening end of spherical shell main body is fixedly installed with sealing plate, sealing plate is pressed between upper ball seat and lower ball seat, conical body portion is the conical surface structure of symmetry up and down, dust cover is installed on the upper end of spherical shell main body and dust cover is connected with conical body portion, conical body portion upper end outside is equipped with centering anti-loose sleeve and centering anti-loose sleeve is fixedly connected with dust cover upper end.The utility model has the advantages of good centering anti-loose effect, strong sealing effect.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology and relates to a self-centering anti-loosening suspension ball joint. Background Technology

[0002] The suspension ball joint is the core connecting component of a car's suspension system. It is responsible for transmitting steering force and damping road vibrations, and is a key component for ensuring driving stability and steering precision.

[0003] Chinese patent publication number CN209705078U discloses a suspension ball joint assembly, including an outer ball seat, a shell, an inner ball seat, a ball pin, small steel balls, a buffer plate, a dust cover, an upper retaining ring, a lower retaining ring, and limiting rods. The outer ball seat is arranged inside the cavity of the shell, and the inner ball seat is arranged inside the cavity of the outer ball seat. The cavity of the inner ball seat has a spherical groove that matches the outer diameter of the ball head of the ball pin. An arc-shaped groove is also formed at the bottom of the spherical groove. The ball head of the ball pin is placed in the spherical groove. Multiple small steel balls are arranged between the ball head of the ball pin and the bottom of the arc-shaped groove. The dust cover is made of soft rubber. The bottom end of the dust cover is fixedly installed on the outer surface of the outer ball seat by the lower retaining ring, and the top end of the dust cover is fixedly installed on the outer surface of the middle part of the ball pin by the upper retaining ring. A pair of limiting rods are symmetrically arranged on the outer wall of the ball pin.

[0004] In the suspension ball joint assembly provided by this patent, the only reliance is on the fit between the spherical groove of the inner ball seat and the ball head of the ball pin. Multiple small steel balls are added between the ball head and the arc groove. The long-term rolling of the small steel balls will cause slight wear on the surface of the arc groove and the ball head, resulting in the gap between the ball head and the spherical groove gradually increasing. When the ball head, small steel balls and other components wear and gaps are generated, looseness will directly occur. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a self-centering, anti-loosening suspension ball joint.

[0006] The objective of this utility model can be achieved through the following technical solution: A self-centering, anti-loosening suspension ball joint includes a ball shell body, a ball pin, and a dust cover. The ball shell body is a shell structure with an open upper end and a cavity structure formed inside. A lower ball seat is installed at the bottom of the cavity structure. The lower ball seat is a spherical structure with an inwardly concave upper side. An installation groove is formed inside the ball shell body. An upper ball seat is installed at the lower end of the opening of the ball shell body, and the lower end of the upper ball seat fits into the installation groove. The upper ball seat is inwardly concave on the lower side. The spherical structure includes a ball head, a conical part, and a pin shaft. The ball head is installed between the lower ball seat and the upper ball seat. A sealing plate is fixedly installed at the open end of the spherical shell body. The sealing plate presses the ball head between the upper ball seat and the lower ball seat. The conical part has a symmetrical conical structure and extends out of the spherical shell body. A dust cover is installed on the upper end of the spherical shell body and is connected to the conical part. A centering and anti-loosening sleeve is installed on the outer side of the upper end of the conical part and is fixedly connected to the upper end of the dust cover.

[0007] In the aforementioned self-centering anti-loosening suspension ball joint, a limiting groove is provided in the middle of the cone portion, and a single-ring retainer is fixedly connected to the outer periphery of the dust cover near the upper end. The upper end of the dust cover is tightly and sealed to the limiting groove through the single-ring retainer.

[0008] In the aforementioned self-centering anti-loosening suspension ball joint, a disc spring is installed between the sealing plate and the ball shell body, and the sealing plate presses the disc spring tightly.

[0009] In the aforementioned self-centering anti-loosening suspension ball joint, a double-ring retainer is fixedly installed on the outer periphery of the bottom of the dust cover.

[0010] Compared with the prior art, the self-centering anti-loosening suspension ball joint provided by this utility model has the following beneficial effects: 1. The conical part of the ball pin adopts a symmetrical conical surface design, which, together with the outer circumferential centering anti-loosening sleeve, can automatically calibrate the center position of the ball pin through the guiding nature of the conical surface during installation, ensuring that the ball head is accurately aligned with the spherical surface of the upper and lower ball seats. At the same time, the centering anti-loosening sleeve is fixedly connected to the upper end of the dust cover, forming a double fixing constraint, which can resist high-frequency vibration under bumpy road conditions and prevent the ball pin from loosening or shifting; 2. In the sealing plate and ball shell A disc spring is installed between the main body and the sealing plate presses it tight. When the ball head and the upper and lower ball seats experience slight wear due to long-term use, the elastic rebound force of the disc spring can automatically compensate for the gap and maintain the preload of the ball head to avoid looseness and abnormal noise. 3. The dust cover is fastened and fitted with the limiting groove of the cone part by a single-ring retaining ring, which can tightly seal the gap between the ball pin and the dust cover, preventing external dust and moisture from entering from the top. An additional double-ring retaining ring is added to the outer circumference of the bottom of the dust cover, which fits tightly with the opening end of the ball shell body to form a double sealing structure. Attached Figure Description

[0011] Figure 1This is a schematic diagram of the overall structure of this utility model.

[0012] In the diagram: 1. Main body of the spherical shell; 11. Cavity structure; 12. Mounting groove; 2. Ball pin; 21. Ball head; 22. Conical part; 221. Limiting groove; 23. Pin shaft part; 3. Dust cover; 4. Lower ball seat; 5. Upper ball seat; 6. Sealing plate; 7. Centering and anti-loosening sleeve; 8. Single-turn retaining ring; 9. Double-turn retaining ring; 10. Disc spring. Detailed Implementation

[0013] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0014] like Figure 1 As shown, this embodiment includes a spherical shell body 1, a ball pin 2, and a dust cover 3. Each component achieves the synergistic functions of centering, preventing loosening, and sealing through precise assembly.

[0015] like Figure 1 As shown, the spherical shell body 1 is an integrated shell structure with an open top. Its interior is integrally formed into a cavity structure 11, which provides a stable mounting base for the internal core components. A lower ball seat 4 is embedded and fixed at the bottom of the cavity structure 11. The lower ball seat 4 adopts an upper concave spherical structure design, and the spherical curvature is precisely adapted to support the ball head 21 of the ball pin 2. A corresponding mounting groove 12 is opened on the inner side wall of the spherical shell body 1. An upper ball seat 5 is assembled at the lower end of the opening of the spherical shell body 1. The lower end of the upper ball seat 5 is tightly fitted and positioned with the mounting groove 12 to ensure coaxiality after installation. At the same time, the upper ball seat 5 adopts a lower concave spherical structure, and its spherical curvature matches that of the lower ball seat 4, together forming a wrapping and supporting structure for the ball head 21.

[0016] like Figure 1 As shown, the ball pin 2 is an integrated molding structure, including a ball head 21, a cone part 22, and a pin shaft part 23 connected in sequence. The ball head 21 is adapted to be installed between the lower ball seat 4 and the upper ball seat 5. The concave spherical surfaces of the upper and lower ball seats achieve all-round fit, ensuring rotational flexibility. A sealing plate 6 is fixedly installed at the open end of the ball shell body 1 by bolts. After installation, the sealing plate 6 presses the ball head 21 between the upper ball seat 5 and the lower ball seat 4 to form a pre-tightening and fixing effect. A disc spring 10 is also clamped between the sealing plate 6 and the ball shell body 1. During the tightening process, the sealing plate 6 simultaneously presses the disc spring 10, and the elastic characteristics of the disc spring 10 realize the wear compensation function. The cone part 22 is designed as a symmetrical cone structure. Its lower end is connected to the ball head 21, and its upper end passes through the sealing plate 6 and extends out of the ball shell body 1. An annular limiting groove 221 is circumferentially opened at the middle position of the cone part 22 to achieve sealing and fixing.

[0017] To elaborate further, such as Figure 1 As shown, the dust cover 3 is made of elastic and wear-resistant material. Its bottom is fitted onto the outer side of the upper end of the spherical shell body 1. A double-ring retaining ring 9 is fixedly installed on the outer periphery of the bottom of the dust cover 3. Through the elastic clamping action of the double-ring retaining ring 9, the bottom of the dust cover 3 is tightly fitted to the outer wall of the spherical shell body 1, forming the first sealing line. The upper end of the dust cover 3 extends to the outer side of the cone part 22, and a single-ring retaining ring 8 is fixedly connected to the outer periphery of the dust cover 3 near the upper end. The single-ring retaining ring 8 is engaged with the limiting groove 221 on the cone part 22, realizing the tight sealing connection between the upper end of the dust cover 3 and the cone part 22, forming the second sealing structure.

[0018] To elaborate further, such as Figure 1 As shown, a centering and anti-loosening sleeve 7 is fitted on the outer side of the upper end of the cone part 22. The inner wall of the centering and anti-loosening sleeve 7 is tightly fitted with the cone surface of the cone part 22. Its upper end is fixedly connected to the inner side of the upper end of the dust cover 3. The centering effect is achieved by guiding the cone surface. At the same time, the anti-loosening constraint is formed by the fixing effect of the dust cover 3 to prevent the ball pin 2 from shifting or loosening during use.

[0019] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0020] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A self-centering, anti-loosening suspension ball joint, comprising a ball shell body (1), a ball pin (2), and a dust cover (3), characterized in that: The spherical shell body (1) is a shell structure with an open upper end and a cavity structure (11) is formed inside the spherical shell body (1). A lower ball seat (4) is installed at the bottom of the cavity structure (11). The lower ball seat (4) is a spherical structure with an inwardly concave upper side. An installation groove (12) is formed inside the spherical shell body (1). An upper ball seat (5) is installed at the lower end of the opening of the spherical shell body (1), and the lower end of the upper ball seat (5) is in contact with the installation groove (12). The upper ball seat (5) is a spherical structure with an inwardly concave lower side. The ball pin (2) includes a ball head (21), a cone part (22), and a pin shaft part (23). Part (21) is installed between the lower ball seat (4) and the upper ball seat (5). A sealing plate (6) is fixedly installed at the open end of the ball shell body (1). The sealing plate (6) presses the ball head (21) between the upper ball seat (5) and the lower ball seat (4). The cone part (22) has a symmetrical cone structure and extends out of the ball shell body (1). The dust cover (3) is installed on the upper end of the ball shell body (1) and is connected to the cone part (22). A centering anti-loosening sleeve (7) is installed on the outer side of the upper end of the cone part (22) and is fixedly connected to the upper end of the dust cover (3).

2. The self-centering anti-loosening suspension ball joint according to claim 1, characterized in that: A limiting groove (221) is provided in the middle of the cone part (22), and a single ring (8) is fixedly connected to the outer periphery of the dust cover (3) near the upper end. The upper end of the dust cover (3) is tightly and sealed to the limiting groove (221) through the single ring (8).

3. The self-centering anti-loosening suspension ball joint according to claim 1, characterized in that: A disc spring (10) is installed between the sealing plate (6) and the spherical shell body (1), and the sealing plate (6) presses the disc spring (10) tightly.

4. The self-centering anti-loosening suspension ball joint according to claim 1, characterized in that: The dust cover (3) has a double-ring retaining ring (9) fixedly installed on the outer periphery of its bottom.

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