Spherical pin assembly with limiting dust cover

Abstract

The utility model discloses a spherical pin assembly with a limiting dust cover, and belongs to the technical field of automobiles. The problems that in the prior art, dust covers on the two sides of a spherical pin assembly are clamped through clamping springs, the distance between a spherical pin shell and the mounting face of the spherical pin assembly can be increased, and when the manufacturing technology of the clamping springs is poor, the dust covers are prone to being abraded, so that grease in the spherical pin assembly leaks are solved. The spherical pin mainly comprises a spherical pin shell, a ball pin is installed in the spherical pin shell and comprises a ball pin body, the upper side and the lower side of the ball pin body are connected with ball necks respectively, the ball necks on the two sides of the ball pin body extend out of an inner cavity of the spherical pin shell respectively, and a dust cover is installed between the ball necks and the spherical pin shell and comprises a dust cover body. The outer side edge of the dust cover body is connected with an outer connector, the inner side edge of the dust cover body is connected with an inner connector, outer limiting grooves are formed in the inner walls of the upper side and the lower side of the spherical pin shell respectively, and inner limiting grooves are formed in ball necks on the two sides respectively.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and in particular relates to a spherical pin assembly with a position-limiting dust cover. Background Art

[0002] The dust cover is a common component on automobiles. It is a protective structure for complex parts with grease or dustproof requirements. The ball pin assembly is a common connection structure used for the vehicle steering joint on the automobile suspension. It is usually located at the joint of the control arm. Therefore, the ball pin assembly is generally equipped with a dust cover to protect its interior. The dust cover can effectively protect the ball pin assembly and extend the life of the ball pin assembly. There are generally two structures of the ball pin assembly. One is that one end of the ball pin extends out of the shell. In this case, only the side of the ball pin extending out of the shell is equipped with a dust cover; the other is that both ends of the ball pin extend out of the shell, also known as the spherical pin assembly. In this case, dust covers are installed on both sides of the ball pin extending out of the shell. For the spherical pin assembly, the dust covers at the upper and lower ends of the existing spherical pin assembly are respectively connected to the ball neck of the ball pin and the end of the shell at the inner and outer interfaces of the dust cover of the axial direction of the ball pin. Some structures need to use a retaining spring to press the dust cover on the ball neck or ball shell of the ball pin. This installation structure of the dust cover of the spherical pin assembly will increase the length of the ball neck of the ball pin, thereby increasing the distance between the shell of the spherical pin assembly and the installation surface of the spherical pin assembly. If the distance between the shell of the spherical pin assembly and the installation surface of the spherical pin assembly is large, it is not guaranteed that a ball pin with a suitable ball neck can be selected in some compact spaces. Moreover, if the manufacturing process of the retaining spring is poor, it will easily cause the dust cover to wear and cause the grease in the spherical pin assembly to leak. Summary of the invention

[0003] The utility model aims to provide a spherical pin assembly with a limited dust cover, so as to overcome the defects in the prior art that the dust covers on both sides of the spherical pin assembly are clamped by a retaining spring, which increases the distance between the spherical pin housing and the mounting surface of the spherical pin assembly, and the dust cover is easily worn and grease in the spherical pin assembly is leaked when the retaining spring manufacturing process is poor.

[0004] The utility model is implemented by adopting the following technical scheme: a spherical pin assembly with a limit dust cover, comprising a spherical pin shell, a ball pin installed in the spherical pin shell, the ball pin comprising a ball pin body, the upper and lower sides of the ball pin body are respectively connected to ball necks, and the ball necks on both sides of the ball pin body respectively extend out of the inner cavity of the spherical pin shell, an annular dust cover is installed between the ball neck and the spherical pin shell, the dust cover comprises an annular dust cover body, the outer edge of the dust cover body is connected to an annular outer connector, the inner edge of the dust cover body is connected to an annular inner connector, the inner walls of the upper and lower sides of the spherical pin shell are respectively provided with outer limit grooves for inserting the outer connector on the same side of the dust cover, and the ball necks on both sides are respectively provided with inner limit grooves for inserting the inner connector on the same side of the dust cover, and the outer limit grooves and the inner limit grooves are both annular.

[0005] Furthermore, the vertical cross-section of the dust cover body is U-shaped, and the dust covers on the upper and lower sides are symmetrically arranged.

[0006] Furthermore, a ball pin seat is installed in the spherical pin housing, the ball pin body is installed in the ball pin seat, and the spherical pin housing is installed with an annular retaining ring on the upper side of the ball pin seat.

[0007] Furthermore, a buffer pad is installed between the retaining ring and the ball pin seat.

[0008] Furthermore, the buffer pad is made of polyurethane material.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model changes the commonly used connection structure of the dust cover on the spherical pin assembly in the prior art. The dust cover body in the utility model is connected to the spherical pin shell and the ball neck through an inner connector and an outer connector respectively, thereby reducing the distance between the spherical pin shell and the mounting surface of the spherical pin assembly (the mounting surface of the spherical pin assembly is the top surface of the ball neck), that is, the length of the ball neck of the ball pin can be made shorter, making it easier to select a ball pin with a suitable ball neck in some compact spaces; and the utility model does not need to use a retaining spring to fasten the dust cover, thereby avoiding the problem of wear of the dust cover and leakage of grease in the spherical pin assembly caused by poor retaining spring manufacturing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the utility model;

[0012] Figure 2 It is a cross-sectional view of the utility model;

[0013] Figure 3 It is a three-dimensional diagram of the dust cover of the utility model.

[0014] In the figure: 1. spherical pin housing; 2. ball pin body; 3. ball neck; 4. dust cover body; 5. outer connector; 6. inner connector; 7. outer limit groove; 8. inner limit groove; 9. ball pin seat; 10. retaining ring; 11. buffer pad; 12. spherical pin assembly mounting surface. DETAILED DESCRIPTION

[0015] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0016] A spherical pin assembly with a limited dust cover includes a spherical pin housing 1, a ball pin is installed in the spherical pin housing 1, a ball pin seat 9 is installed in the spherical pin housing 1, the ball pin body 2 is installed in the ball pin seat 9, the spherical pin housing 1 is installed with an annular retaining ring 10 on the upper side of the ball pin seat 9, a buffer pad 11 is installed between the retaining ring 10 and the ball pin seat 9, and the buffer pad 11 is made of polyurethane material.

[0017] The ball pin includes a ball pin body 2, the upper and lower sides of the ball pin body 2 are respectively connected to a ball neck 3, and the ball necks 3 on both sides of the ball pin body 2 extend out of the inner cavity of the spherical pin housing 1, and the top surface of the ball neck 3 is a spherical pin assembly mounting surface 12. An annular dust cover is installed between the ball neck 3 and the spherical pin housing 1, and the dust cover includes an annular dust cover body 4, the outer edge of the dust cover body 4 is connected to an annular outer connector 5, and the inner edge of the dust cover body 4 is connected to an annular inner connector 6. The inner walls of the upper and lower sides of the spherical pin housing 1 are respectively provided with outer limiting grooves 7 for inserting the outer connector 5 on the same side of the dust cover, and the ball necks 3 on both sides are respectively provided with inner limiting grooves 8 for inserting the inner connector 6 on the same side of the dust cover, and the outer limiting grooves 7 and the inner limiting grooves 8 are both annular. When the utility model installs the dust cover between the spherical pin housing 1 and the ball pin, since the dust cover is made of rubber material and has elasticity, people make the dust cover elastically deform, so that the outer connector 5 of the dust cover is inserted into the outer limit groove 7 on the corresponding side of the spherical pin housing 1, and the inner connector 6 of the dust cover is inserted into the inner limit groove 8 on the corresponding side of the spherical pin housing 1. Under the action of elasticity, the dust cover body 4 can make the outer connector 5 and the inner connector 6 on both sides always stably inserted into the outer limit groove 7 and the inner limit groove 8 respectively.

[0018] The vertical cross section of the dust cover body 4 is U-shaped, and the dust covers on the upper and lower sides are symmetrically arranged. By making the vertical cross section of the dust cover body 4 U-shaped, the utility model can make the dust cover body 4 more easily elastically deformed, thereby making the outer connector 5 and the inner connector 6 on both sides of the dust cover body 4 better always stably inserted into the outer limit groove 7 and the inner limit groove 8 respectively; at the same time, when the ball pin rotates, the dust cover body 4 can also be better elastically deformed.

Claims

1. A spherical pin assembly with a limited dust cover, characterized in that: The invention comprises a spherical pin housing (1), a spherical pin is installed in the spherical pin housing (1), the spherical pin comprises a spherical pin body (2), the upper and lower sides of the spherical pin body (2) are respectively connected to ball necks (3), and the ball necks (3) on both sides of the spherical pin body (2) respectively extend out of the inner cavity of the spherical pin housing (1), an annular dust cover is installed between the ball neck (3) and the spherical pin housing (1), the dust cover comprises an annular dust cover body (4), the outer surface of the dust cover body (4) The side edge is connected to an annular outer connector (5), the inner edge of the dust cover body (4) is connected to an annular inner connector (6), the inner walls of the upper and lower sides of the spherical pin housing (1) are respectively provided with outer limit grooves (7) for the outer connector (5) on the same side of the dust cover to be inserted, and the ball necks (3) on both sides are respectively provided with inner limit grooves (8) for the inner connector (6) on the same side of the dust cover to be inserted, and the outer limit grooves (7) and the inner limit grooves (8) are both annular.

2. The spherical pin assembly with a limited dust cover according to claim 1, characterized in that: The vertical cross-section of the dust cover body (4) is U-shaped, and the dust covers are symmetrically arranged on the upper and lower sides.

3. The spherical pin assembly with a limited dust cover according to claim 1, characterized in that: A ball pin seat (9) is installed in the spherical pin housing (1), the ball pin body (2) is installed in the ball pin seat (9), and the spherical pin housing (1) is installed with an annular retaining ring (10) on the upper side of the ball pin seat (9).

4. The spherical pin assembly with a limited dust cover according to claim 3, characterized in that: A buffer pad (11) is installed between the retaining ring (10) and the ball pin seat (9).

5. The spherical pin assembly with a limited dust cover according to claim 4, characterized in that: The buffer pad (11) is made of polyurethane material.

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