Ball seat structure of ball pin

Abstract

The utility model provides a ball seat structure of a ball pin, which relates to the technical field of suspension ball pins and particularly comprises a ball seat body with a spherical inner cavity, the spherical inner cavity is provided with an opening penetrating to the upper end face of the ball seat body, and the wall thickness of the side peripheral wall of the ball seat body is gradually thinned from bottom to top. A plurality of first open grooves distributed in the circumferential direction are formed in the upper portion of the inner circumferential wall of the spherical inner cavity, the first open grooves are formed in the generatrix direction of the spherical inner cavity, the first open grooves penetrate through the outer circumferential wall of the ball seat body, and the upper portions of the first open grooves extend to the upper end face of the ball seat body. According to the scheme, the side peripheral wall of the ball seat body is designed to be thin at the upper part and thick at the lower part, and the shrinkage degree of the upper part of the ball seat body is smaller than that of the lower part in a low-temperature environment, so that the ball head end cannot be easily separated from the spherical inner cavity, and the connection stability of the ball head end and the ball seat body in the low-temperature environment is ensured.

Description

Technical Field

[0001] The utility model relates to the field of automobile suspension ball studs, in particular to a ball seat structure of a ball stud. Background Art

[0002] Ball pins are widely used in independent suspension systems. Control arms or thrust rods are often connected to other components through ball pins at the ends. The main function of the ball pin is to achieve up and down bouncing and steering movement of the wheel.

[0003] There are two main types of ball pin structures: one is a combination of a ball pin and an integral ball seat, and the other is a combination of a hemispherical ball pin and a spherical component. In the past, spiral springs were mostly used for preloading and compensating wear, but now synthetic resin ball seats with elasticity and lubrication are widely used. Assembly can be achieved by pressing the ball end of the ball pin into the spherical inner cavity of the ball seat.

[0004] In order to facilitate the press-fitting of the ball stud, the spherical inner cavity of the traditional ball seat is designed with a certain amount of margin in terms of size; however, in a low temperature environment, the ball seat itself will shrink, which will cause the fitting clearance between the spherical inner cavity of the ball seat and the ball stud to increase, thereby reducing the handling stability. Utility Model Content

[0005] The utility model aims to solve the problem in the prior art that an excessively large matching gap is easily generated between the spherical inner cavity of the ball seat and the ball stud, resulting in reduced control stability.

[0006] In order to solve the above problems, the utility model provides a ball seat structure of a ball stud, including a ball seat body provided with a spherical inner cavity, the spherical inner cavity has an opening that penetrates to the upper end surface of the ball seat body, the wall thickness of the side circumferential wall of the ball seat body gradually becomes thinner from bottom to top, and the upper part of the inner circumferential wall of the spherical inner cavity is provided with a plurality of first grooves distributed along the circumferential direction, the first grooves are arranged along the generatrix direction of the spherical inner cavity, the first grooves penetrate to the outer circumferential wall of the ball seat body, and the upper part of the first grooves extends to the upper end surface of the ball seat body.

[0007] In the above scheme, the spherical inner cavity is used for the insertion of the ball head end of the ball stud; compared with the prior art, the above scheme designs the side circumferential wall of the ball socket body to be thin at the top and thick at the bottom, and arranges a first groove at the upper part of the inner circumferential wall of the spherical inner cavity. Since the first groove extends to the upper end surface of the ball socket body, the position of the ball socket body close to the opening of the spherical inner cavity has appropriate deformation ability, which is conducive to the insertion of the ball head end, making the assembly more labor-saving and convenient. At the same time, the size of the spherical inner cavity can be more closely matched to the size of the ball head end, thereby reducing the fitting clearance; at the same time, since the side circumferential wall of the ball socket body is designed to be thin at the top and thick at the bottom, the shrinkage degree of the upper part of the ball socket body is less than that of the lower part in a low temperature environment, thereby ensuring that the ball head end will not easily fall out of the spherical inner cavity, thereby ensuring the connection stability between the ball head end and the ball socket body in a low temperature environment.

[0008] In an improved embodiment, the lower portion of the inner circumferential wall of the spherical inner cavity is provided with a plurality of second grooves distributed along the circumferential direction, so that the lower portion of the spherical inner cavity also has appropriate deformation ability, which is beneficial to the plug-in fit between the spherical inner cavity and the ball head end.

[0009] In an improved embodiment, the first grooves and the second grooves are the same in number and correspond to each other, the corresponding first grooves and the second grooves are located on the same generatrix of the inner wall of the spherical inner cavity, the first grooves are evenly spaced, and the second grooves are evenly spaced, thereby ensuring that the deformation of the ball seat body is more uniform.

[0010] In an improved embodiment, an annular oil storage groove is provided on the inner surface of the spherical inner cavity, and the oil storage groove is used to be filled with lubricating oil to reduce the friction between the ball head end and the spherical inner cavity.

[0011] In an improved embodiment, the upper side wall and the lower side wall of the oil storage tank are both provided with rounded corners relative to the inner peripheral wall of the spherical inner cavity, so as to ensure that the ball head end moves more smoothly in the spherical inner cavity.

[0012] In an improved embodiment, the oil storage tank is opened in the transverse direction and is located between the first groove and the second groove of the spherical inner cavity, thereby ensuring that the oil storage tank is located in the middle of the spherical inner cavity, so that the lubricating oil in the oil storage tank can better lubricate the inner circumferential wall of the spherical inner cavity.

[0013] In an improved embodiment, the upper portion of the second groove extends to the oil storage groove, thereby facilitating the lubricating oil in the oil storage cavity to enter other positions of the spherical inner cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A is a top view schematic diagram of a ball seat structure of a ball stud;

[0015] Figure 2 For along Figure 1 Schematic cross-sectional view of the AA section line;

[0016] Figure 3 b is a top view schematic diagram of a ball seat structure of a ball stud;

[0017] Description of reference numerals:

[0018] 1. Ball seat body; 2. Spherical inner cavity; 3. First slot; 4. Oil storage tank; 5. Second slot. DETAILED DESCRIPTION

[0019] It should be understood by those skilled in the art that the following embodiments are only used to explain the technical principles of the embodiments of the present application and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art may make adjustments to them as needed to adapt to specific application scenarios.

[0020] In the description of the following embodiments, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0021] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] See also Figure 1 and Figure 2 The embodiment of the utility model provides a ball seat structure of a ball stud, comprising a ball seat body 1 having a spherical inner cavity 2, Figure 2As a reference, the ball socket body 1 takes the vertical direction as the central axis, the spherical inner cavity 2 has an opening that penetrates to the upper end surface of the ball socket body 1, and the wall thickness of the side circumferential wall of the ball socket body 1 gradually becomes thinner from bottom to top. The upper part of the inner circumferential wall of the spherical inner cavity 2 is provided with a plurality of first grooves 3 distributed along the circumferential direction, and the first grooves 3 are arranged along the generatrix direction of the spherical inner cavity 2. The first grooves 3 penetrate to the outer circumferential wall of the ball socket body 1, and the upper part of the first grooves 3 extends to the upper end surface of the ball socket body 1.

[0024] During assembly, the spherical inner cavity 2 is used for the insertion of the ball head end of the ball head pin; compared with the prior art, the above scheme designs the side wall of the ball socket body 1 to be thin at the top and thick at the bottom, and sets a first groove 3 on the upper part of the inner wall of the spherical inner cavity 2. Since the first groove 3 extends to the upper end surface of the ball socket body 1, the position of the opening of the ball socket body 1 close to the spherical inner cavity 2 has appropriate deformation ability, which is conducive to the insertion of the ball head end, making the assembly more labor-saving and convenient. At the same time, the size of the spherical inner cavity 2 can be more closely matched to the size of the ball head end, thereby reducing the fitting clearance; at the same time, since the side wall of the ball socket body 1 is designed to be thin at the top and thick at the bottom, the shrinkage degree of the upper part of the ball socket body 1 is less than that of the lower part in a low temperature environment, thereby ensuring that the ball head end will not easily fall out of the spherical inner cavity 2, thereby ensuring the connection stability between the ball head end and the ball socket body 1 in a low temperature environment.

[0025] As an improvement to the above embodiment, a plurality of second grooves 5 distributed along the circumferential direction are provided at the lower portion of the inner wall of the spherical inner cavity 2, so that the lower portion of the spherical inner cavity 2 also has appropriate deformation ability, which is beneficial to the plug-in fit between the spherical inner cavity 2 and the ball head end.

[0026] Furthermore, the number of the first grooves 3 and the second grooves 5 are the same and correspond to each other. The corresponding first grooves 3 and second grooves 5 are located on the same generatrix of the inner wall of the spherical inner cavity 2. The first grooves 3 are evenly spaced and the second grooves 5 are evenly spaced, thereby ensuring that the deformation of the ball seat body 1 is more uniform.

[0027] The number of the first slots 3 and the second slots 5 can be set as required, such as Figure 1 In the embodiment, the number of the first slot 5 and the second slot 5 are both 5; Figure 3 In the embodiment, the number of the first slots 5 and the number of the second slots 5 are both ten.

[0028] As an improvement to the above embodiment, an annular oil storage groove 4 is provided on the inner surface of the spherical inner cavity 2 , and the oil storage groove 4 is used to be filled with lubricating oil to reduce the friction between the ball head end and the spherical inner cavity 2 .

[0029] The oil storage tank 4 is preferably opened in the transverse direction and is located between the first groove 3 and the second groove 5 of the spherical inner cavity 2, thereby ensuring that the oil storage tank 4 is located in the middle of the spherical inner cavity 2, so that the lubricating oil in the oil storage tank 4 can better lubricate the inner wall of the spherical inner cavity 2.

[0030] Furthermore, the upper side wall and the lower side wall of the oil storage tank 4 are both provided with rounded corners relative to the inner peripheral wall of the spherical inner cavity 2 to ensure that the ball head end moves more smoothly in the spherical inner cavity 2.

[0031] As an improvement to the above embodiment, the upper portion of the second slot 5 extends to the oil storage tank 4 , thereby facilitating the lubricating oil in the oil storage cavity to enter other positions of the spherical inner cavity 2 .

[0032] It should be noted that, in the description of the present application, the terms "inside", "outside", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is merely for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application. All directional indications (such as up, down, left, right, front, back, inside, and outside) are only used to explain the relative positional relationship, movement, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0033] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0034] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A ball seat structure for a ball stud, comprising a ball seat body (1) provided with a spherical inner cavity (2), wherein the spherical inner cavity (2) has an opening extending through the upper end surface of the ball seat body (1), characterized in that: The wall thickness of the side circumferential wall of the ball seat body (1) gradually becomes thinner from bottom to top, and the upper part of the inner circumferential wall of the spherical inner cavity (2) is provided with a plurality of first grooves (3) distributed along the circumferential direction, and the first grooves (3) are arranged along the generatrix direction of the spherical inner cavity (2), and the first grooves (3) penetrate to the outer circumferential wall of the ball seat body (1), and the upper part of the first grooves (3) extends to the upper end surface of the ball seat body (1).

2. A ball seat structure of a ball stud according to claim 1, characterized in that: The lower part of the inner peripheral wall of the spherical inner cavity (2) is provided with a plurality of second slots (5) distributed along the circumferential direction.

3. A ball seat structure of a ball stud according to claim 2, characterized in that: The first slots (3) and the second slots (5) are the same in number and correspond to each other. The corresponding first slots (3) and the second slots (5) are located on the same generatrix of the inner circumferential wall of the spherical inner cavity (2). The first slots (3) are evenly spaced and distributed, and the second slots (5) are evenly spaced and distributed.

4. A ball seat structure for a ball stud according to claim 2 or 3, characterized in that: An annular oil storage groove (4) is provided on the inner surface of the spherical inner cavity (2).

5. A ball seat structure for a ball stud according to claim 4, characterized in that: Rounded corners are provided between the upper side wall and the lower side wall of the oil storage tank (4) relative to the inner peripheral wall of the spherical inner cavity (2).

6. A ball seat structure for a ball stud according to claim 4, characterized in that: The oil storage groove (4) is opened in the transverse direction and is located between the first groove (3) and the second groove (5) of the spherical inner cavity (2).

7. A ball seat structure for a ball stud according to claim 6, characterized in that: The upper portion of the second slot (5) extends to the oil storage tank (4).

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