Ball pin structure convenient for fixing dust cover

Abstract

The utility model relates to a ball pin structure convenient to fix a dust cover, and relates to the technical field of automobile parts, the ball pin structure comprises a rod body and a ball head integrally fixed with the rod body, a baffle ring is integrally fixed on the outer side wall of the rod body, a locking nut is in threaded connection with the rod body, and an extension part is integrally fixed on the end face, facing the baffle ring, of the locking nut; a space for the dust cover to enter is formed between the extension part and the rod body, the inner wall of the extension part is a conical surface, the baffle ring directly faces the extension part, a conical surface is arranged at the position, close to the baffle ring, of the outer wall of the rod body, and the shape of the conical surface corresponds to that of the inner wall of the extension part. Through the specially designed structures such as the rod body and the locking nut, the end of the dust cover can be pressed and fixed by screwing the locking nut, parts such as a retaining ring and a clamping spring do not need to be used, the installation process is convenient and rapid, and meanwhile enough stability is kept.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a ball pin structure for facilitating the fixing of a dust cover. Background Technology

[0002] A ball joint is generally a component where a threaded rod and a ball head are integrally fixed. In automotive parts, ball joints are primarily used in steering and suspension systems. Through the cooperation of the ball head and the ball housing, they allow for spatial rotation to prevent component disengagement while simultaneously transmitting force. The ball head and ball housing are lubricated with lubricating oil. To prevent dust from entering the contact area, a dust cover is typically installed between the ball joint and the ball housing.

[0003] Patent application CN109866564A discloses a ball pin assembly, including a ball pin and a mounting base. The ball pin has a ball head and a rod body. The mounting base has a mounting groove for mounting the ball head. A sleeve is connected to the rod body and the mounting base by a fixing structure. The fixing structure includes a first retaining edge, a second retaining edge, and a first retaining ring located between the first and second retaining edges. An annular groove is formed between the first and second retaining edges. One end of the sleeve is fixed in the annular groove between the first and second retaining edges by the first retaining ring. The fixing structure also includes an annular groove on the outside of the mounting base and a second retaining ring located in the annular groove. The other end of the sleeve is fixed in the annular groove by the second retaining ring.

[0004] Regarding the aforementioned technologies, the inventors believe that installing the second buckle on the outside of the dust cover is quite difficult, as the second buckle needs to be expanded to a certain inner diameter to be inserted, and the installation process is time-consuming and laborious. Utility Model Content

[0005] This application provides a ball pin structure for easy fixing of dust covers, avoiding the use of expansion buckles for installation. Fixing to the dust cover can be completed by simply tightening the nut, making the installation process convenient and quick.

[0006] This application provides a ball pin structure for easily fixing a dust cover, employing the following technical solution:

[0007] A ball-pin structure for easy fixing of a dust cover includes a rod body and a ball head integrally fixed to the rod body. A retaining ring is integrally fixed to the outer wall of the rod body. A locking nut is threaded onto the rod body. An extension is integrally fixed to the end face of the locking nut facing the retaining ring. The extension and the rod body form a space for the dust cover to enter. The inner wall of the extension is a conical surface. The retaining ring is directly opposite the extension. A conical surface is provided on the outer wall of the rod body near the retaining ring. The shape of the conical surface corresponds to the shape of the inner wall of the extension.

[0008] By adopting the above technical solution, during the process of tightening the locking nut, the inner wall of the extension and the conical surface continuously approach each other, thereby pressing the dust cover. As the end of the dust cover is pressed, the end of the extension or the conical sleeve also cooperates with the retaining ring to press the corresponding position of the dust cover, thereby forming a stable fixing effect.

[0009] Optionally, at least two annular grooves are formed on the conical surface.

[0010] By adopting the above technical solution, the annular groove increases the difficulty of detaching the dust cover after it is compressed, thereby improving the fixing effect of the dust cover.

[0011] Optionally, an aluminum conical sleeve is provided between the locking nut and the retaining ring, and the outer wall shape of the conical sleeve corresponds to the inner wall shape of the extension.

[0012] By adopting the above technical solution, when the locking nut is rotated, relative rotation occurs between the extension and the conical sleeve. The conical sleeve does not rotate relative to the dust cover, thus avoiding wear on the dust cover and reducing the resistance to tightening the locking nut.

[0013] Optionally, the thickness of the tapered sleeve is 0.4-0.6 mm.

[0014] By adopting the above technical solution, the conical sleeve has a smaller thickness, and the aluminum material is easy to deform, so that the conical sleeve fits the outer wall shape of the dust cover as closely as possible after being pressed, thereby improving the pressing effect on the dust cover.

[0015] Optionally, the end face of the locking nut facing away from the extension is the abutment surface, and the abutment surface is circular.

[0016] By adopting the above technical solution, the contact surface is used to make contact and press firmly with the vehicle body structure, thereby increasing the contact area.

[0017] Optionally, an anti-loosening washer is fixed to the inner wall of the locking nut, and the anti-loosening washer is pressed into the external thread of the rod.

[0018] By adopting the above technical solution, the anti-loosening washer can prevent the locking nut from loosening.

[0019] Optionally, the end of the ball head away from the shaft has a flat surface.

[0020] By adopting the above technical solution, when the ball head and the ball shell are mated, there is more space to accommodate the lubricating oil, thus increasing the duration of lubrication.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. With its specially designed rod body and locking nut structure, the dust cover can be pressed and fixed by simply tightening the locking nut. No buckles or snap rings are needed, making the installation process convenient and quick while maintaining sufficient stability.

[0023] 2. The ring groove improves the clamping effect on the dust cover, and the conical sleeve facilitates the screwing in of the locking nut. Attached Figure Description

[0024] Figure 1 This is a perspective view of a ball pin structure for facilitating the fixing of a dust cover, according to an embodiment.

[0025] Figure 2 This is a cross-sectional view of an embodiment;

[0026] Figure 3 This is a schematic diagram of the embodiment in conjunction with the dust cover.

[0027] Explanation of reference numerals in the attached drawings: 1. Rod body; 2. Ball head; 11. Retaining ring; 3. Locking nut; 31. Extension; 12. Tapered surface; 13. Ring groove; 4. Tapered sleeve; 32. Abutment surface; 33. Anti-loosening washer; 21. Flat surface. Detailed Implementation

[0028] The present application will be further described in detail below with reference to the accompanying drawings.

[0029] Reference Figure 1 This embodiment discloses a ball pin structure for easy fixing of dust cover, including rod body 1, ball head 2 integrally fixed with rod body 1, retaining ring 11 integrally fixed on the outer side wall of rod body 1, external thread on the outer end of rod body 1, and locking nut 3 threadedly connected to rod body 1.

[0030] Reference Figure 1 and Figure 2 An extension 31 is integrally fixed to the end face of the locking nut 3 facing the retaining ring 11. The extension 31 and the rod body 1 form a space for the dust cover to enter. The inner wall of the extension 31 is a conical surface. The retaining ring 11 is directly opposite the extension 31. The outer wall of the rod body 1 is provided with a conical surface 12 near the retaining ring 11. The shape of the conical surface 12 corresponds to the shape of the inner wall of the extension 31.

[0031] At least two annular grooves 13 are provided on the conical surface 12. The annular grooves 13 increase the difficulty of detaching the dust cover after it is compressed, thereby improving the fixing effect of the dust cover.

[0032] An aluminum conical sleeve 4 is provided between the locking nut 3 and the retaining ring 11. The conical sleeve 4 is fitted over the rod body 1, and the outer wall shape of the conical sleeve 4 corresponds to the inner wall shape of the extension 31. The thickness of the conical sleeve 4 is 0.4-0.6mm. The conical sleeve 4 is used to directly contact the outer wall of the dust cover. Because the friction between the rubber dust cover and the aluminum conical sleeve 4 is relatively large, while the friction between the extension 31 and the conical sleeve 4, which are both metal, is relatively small, when the locking nut 3 is rotated, relative rotation occurs between the extension 31 and the conical sleeve 4, while the conical sleeve 4 does not rotate relative to the dust cover, thus avoiding wear on the dust cover and reducing the resistance to tightening the locking nut 3. The conical sleeve 4 has a small thickness, and the aluminum material is easily deformable, so that the conical sleeve 4, after being pressed, fits as closely as possible to the outer wall shape of the dust cover, improving the pressing effect on the dust cover.

[0033] The end face of the locking nut 3 facing away from the extension 31 is the abutment surface 32. The abutment surface 32 is circular, and the end where the abutment surface 32 is located is the large end of the locking nut 3. The abutment surface 32 is used to contact and press against the structure of the vehicle body to increase the contact area.

[0034] An anti-loosening washer 33 is fixed to the inner wall of the locking nut 3. The anti-loosening washer 33 is made of nylon material. The anti-loosening washer 33 is pressed into the external thread of the rod body 1. The anti-loosening washer 33 can prevent the locking nut 3 from loosening.

[0035] The end of the ball head 2 facing away from the shaft 1 has a flat surface 21. This design allows for more space to accommodate lubricating oil when the ball head 2 mates with the ball shell, thus increasing the duration of lubrication.

[0036] The implementation principle of the ball pin structure for facilitating the fixing of dust covers in this application embodiment is as follows:

[0037] Reference Figure 2 and Figure 3 After sequentially placing the dust cover and conical sleeve 4 on the outside of the rod body 1, the locking nut 3 is threaded onto the rod body 1. During the tightening of the locking nut 3, the inner wall of the extension 31 and the conical surface 12 continuously approach each other, thereby pressing the dust cover tightly. The annular groove 13 enhances the pressing effect on the dust cover, and the conical sleeve 4 facilitates the screwing in of the locking nut 3. As the end of the dust cover is pressed tightly, the end of the extension 31 or the conical sleeve 4 cooperates with the retaining ring 11 to press the corresponding position of the dust cover tightly, thereby forming a stable fixing effect.

[0038] In summary, this application utilizes a specially designed rod body 1 and locking nut 3, which allow the dust cover to be tightened and fixed by simply screwing on the locking nut 3. This eliminates the need for parts such as buckles and snap rings, making the installation process convenient and quick while maintaining sufficient stability.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A ball-pin structure for easy fixing of a dust cover, comprising a rod body (1) and a ball head (2) integrally fixed to the rod body (1), characterized in that: A retaining ring (11) is integrally fixed to the outer wall of the rod (1). A locking nut (3) is threaded onto the rod (1). An extension (31) is integrally fixed to the end face of the locking nut (3) facing the retaining ring (11). A space for the dust cover to enter is formed between the extension (31) and the rod (1). The inner wall of the extension (31) is a conical surface. The retaining ring (11) is directly opposite the extension (31). A conical surface (12) is provided on the outer wall of the rod (1) near the retaining ring (11). The shape of the conical surface (12) corresponds to the shape of the inner wall of the extension (31).

2. The ball pin structure for easily fixing a dust cover according to claim 1, characterized in that: At least two annular grooves (13) are provided on the conical surface (12).

3. The ball pin structure for easily fixing a dust cover according to claim 1, characterized in that: An aluminum conical sleeve (4) is provided between the locking nut (3) and the retaining ring (11), and the outer wall shape of the conical sleeve (4) corresponds to the inner wall shape of the extension (31).

4. The ball pin structure for easily fixing a dust cover according to claim 3, characterized in that: The thickness of the tapered sleeve (4) is 0.4-0.6 mm.

5. The ball pin structure for easily fixing a dust cover according to claim 1, characterized in that: The end face of the locking nut (3) facing away from the extension (31) is the abutting surface (32), and the abutting surface (32) is circular.

6. The ball pin structure for easily fixing a dust cover according to claim 1, characterized in that: The inner wall of the locking nut (3) is fixed with an anti-loosening washer (33), and the anti-loosening washer (33) is pressed into the external thread of the rod (1).

7. The ball pin structure for easily fixing a dust cover according to claim 1, characterized in that: The end of the ball head (2) away from the rod body (1) has a flat surface (21).

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