Dustproof cover for steering ball pin of automobile

Abstract

The utility model discloses an automobile steering ball pin dust cover which comprises a dust cover body, the dust cover body is made of rubber materials, the lower end of the dust cover body is provided with a lower opening end, the upper end of the dust cover body is provided with an upper opening end, and the lower end of the lower opening end is provided with a first installation groove. A first mounting groove is formed in the inner wall of the lower opening end, a first sealing ring adheres to the inner wall of the first mounting groove, a second mounting groove is formed in the inner wall of the lower opening end, a second sealing ring adheres to the inner wall of the second mounting groove, a positioning boss is arranged on the outer periphery of the lower opening end, and an internal thread mounting hole is formed in the middle of the positioning boss in a penetrating mode. Strip-shaped reinforcing ribs are adhered to the outer surface of the dust cover main body; a U-shaped supporting frame is fixedly installed on the outer side of the upper end of the upper opening end, and the middle of the U-shaped supporting frame is rotationally connected with a fastening shaft in a penetrating mode through a rotating shaft. The sealing effect between the upper opening end and the ball head is further enhanced, and water and other impurities are prevented from permeating from the through hole.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a dust cover for automotive steering ball pins. Background Technology

[0002] As a core component of the automotive steering system, the steering ball pin plays a crucial role in connecting the steering tie rod and the steering knuckle, ensuring that the wheels steer precisely according to the driver's intentions. However, the environment in which the steering ball pin operates during vehicle movement is extremely complex. Under various road conditions, such as dusty construction site roads, muddy rural paths, or heavily flooded city streets, the steering ball pin is highly susceptible to the intrusion of impurities such as dust, mud, and moisture.

[0003] These impurities, once inside the steering ball joint, can cause serious damage. Dust and sand will constantly rub against the ball joint and seat, accelerating wear and causing the steering play to gradually increase. As wear intensifies, the steering system will become less responsive, the driver will feel the steering wheel is heavy and sluggish, and may even hear abnormal noises, severely impacting the driving experience. More seriously, moisture intrusion can cause the ball joint and seat to rust, further reducing their performance and shortening their lifespan. In severe cases, it may even lead to steering failure and other major safety hazards, directly threatening driving safety.

[0004] While existing dust covers for automotive steering ball pins can provide some degree of dust and water protection, they still have many shortcomings. The sealing performance of some dust covers is not ideal, and the sealing materials are prone to aging and cracking due to environmental factors after long-term use, leading to seal failure. Impurities then enter from the outside, thus affecting the performance of the automotive steering ball pins. Utility Model Content

[0005] The purpose of this utility model is to provide a dust cover for automotive steering ball pins, in order to solve the problem mentioned in the background art that although existing automotive steering ball pin dust covers can play a certain role in dust and water protection, they still have many shortcomings. The sealing performance of some dust covers is not ideal, and their sealing materials are easily affected by environmental factors after long-term use, resulting in aging, cracking, and other phenomena, leading to sealing failure. Impurities take the opportunity to enter from the outside, thereby affecting the performance of automotive steering ball pins.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a dust cover body made of rubber material. The dust cover body has a lower opening at its lower end and an upper opening at its upper end. A first mounting groove is formed at the lower end of the lower opening, and a first sealing ring is adhered to the inner wall of the first mounting groove. A second mounting groove is formed on the inner wall of the lower opening, and a second sealing ring is adhered to the inner wall of the second mounting groove. A positioning boss is formed on the outer periphery of the lower opening, and an internally threaded mounting hole is formed through the center of the positioning boss. Strip-shaped reinforcing ribs are adhered to the outer surface of the dust cover body.

[0007] A U-shaped support frame is fixedly installed on the outer side of the upper end. A fastening shaft is rotatably connected through the middle of the U-shaped support frame via a rotating shaft. A fastening nut for fastening the fastening shaft is threadedly connected to the outer curved surface of the upper end of the fastening shaft. An elastic fastening band is fixedly installed on the outer curved surface of the fastening shaft. A limit ring is fixedly installed on the outer end of the upper end. The elastic fastening band is movably connected to the inner wall of the limit ring.

[0008] Preferably, the dust cover body is generally horn-shaped, and the diameter of the through hole at the upper end is smaller than the diameter of the ball head of the steering ball pin.

[0009] Preferably, the first sealing ring and the second sealing ring are made of rubber, and there are several positioning bosses, which are symmetrically distributed around the outer periphery of the lower end.

[0010] Preferably, there are several strip-shaped reinforcing ribs, which are symmetrically distributed sequentially on the outer surface of the dust cover body.

[0011] Preferably, a thickened layer is provided at the edges of the lower end and the upper end.

[0012] Preferably, a knob is fixedly installed at the top end of the fastening shaft, and an external thread is formed on the outer curved surface of the upper end of the fastening shaft.

[0013] Preferably, the bottom of the fastening nut is provided with anti-slip stripes, and there are several limiting rings, which are symmetrically distributed sequentially from the outer ends of the upper opening.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention forms a double sealing barrier through the elastic bonding of the first and second sealing rings at the lower end and the rubber material at the upper end. This sealing structure can effectively prevent dust, mud, moisture and other impurities from entering the steering ball pin of the car. Even under harsh environmental conditions, it can provide reliable protection for the steering ball pin and has excellent sealing performance. At the same time, the dust cover body is made of high-quality rubber material and is equipped with strip reinforcing ribs and thickened layers. The flexibility and elasticity of the rubber material itself allows the dust cover body to adapt to various vibrations and deformations during car driving, while the strip reinforcing ribs and thickened layers enhance the strength and wear resistance of the dust cover, enabling it to withstand long-term friction and compression and extending the service life of the dust cover.

[0016] This invention also features a mechanism where, when the fastening shaft rotates, it drives the elastic fastening band to rotate and rewind. As the elastic fastening band rotates and rewinds, it gradually tightens, compressing the upper end. Once the elastic fastening band is tightened, the fastening nut can be rotated to lock and secure the fastening shaft. When the fastening shaft is locked and secured, it keeps the elastic fastening band constantly tightened and compressing the upper end, thereby further enhancing the sealing effect between the upper end and the ball head and preventing moisture and other impurities from seeping in through the through hole. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a dust cover for a car steering ball pin according to the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of a dust cover for a car steering ball pin according to the present invention. Figure 2 ;

[0019] Figure 3 This is a partial structural diagram of a dust cover for a car steering ball pin according to the present invention.

[0020] In the diagram: 1. Dust cover body; 2. Lower end; 3. Upper end; 4. First mounting groove; 5. First sealing ring; 6. Second mounting groove; 7. Second sealing ring; 8. Positioning boss; 9. Internal thread mounting hole; 10. Strip reinforcing rib; 11. U-shaped support frame; 12. Fastening shaft; 13. Fastening nut; 14. Elastic fastening band; 15. Limiting ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3 This utility model provides a technical solution for a dust cover for a car steering ball pin: it includes a dust cover body 1, which is generally horn-shaped. The horn-shaped design not only meets the installation requirements of the steering ball pin, but also better wraps and protects the ball pin. The dust cover body 1 is made of rubber material, which has good flexibility and elasticity. It can freely stretch and deform with the movement of the steering ball pin during the car's operation without interfering with the normal operation of the steering ball pin. The dust cover body 1 has a lower opening 2 at the lower end and an upper opening 3 at the upper end. The lower opening 2 fits on the mounting seat of the steering ball pin, and the upper opening 3 fits on the diameter of the ball head of the ball pin, so that the dust cover body 1 can wrap around the steering ball pin to form a relatively closed protective space.

[0023] The lower end 2 has a first mounting groove 4 at its lower end, and a first sealing ring 5 is bonded to the inner wall of the first mounting groove 4. The lower end 2 has a second mounting groove 6 at its inner wall, and a second sealing ring 7 is bonded to the inner wall of the second mounting groove 6. The first sealing ring 5 and the second sealing ring 7 are made of rubber, so that the first sealing ring 5 and the second sealing ring 7 form a sealing barrier, effectively preventing dust, mud and other impurities from entering the dust cover from the lower end 2. The lower end 2 has a positioning boss 8 on its outer periphery, and there are several positioning bosses 8, which are symmetrically distributed on the outer periphery of the lower end 2. The positioning boss 8 has an internal threaded mounting hole 9 through its center, so that the lower end 2 can be fixedly installed on the upper end of the mounting seat of the steering ball pin through the internal threaded mounting hole 9 and the mounting bolt. The diameter of the through hole of the upper end 3 is smaller than the diameter of the ball head of the steering ball pin. By utilizing the elastic properties of the rubber material, when the ball head passes through the through hole, the rubber material will undergo elastic deformation, so that the inner wall of the upper end 3 is tightly attached to the surface of the ball head, forming a sealing barrier.

[0024] The outer surface of the dust cover body 1 is bonded with strip-shaped reinforcing ribs 10, and there are several strip-shaped reinforcing ribs 10, which are symmetrically distributed on the outer surface of the dust cover body 1. The strip-shaped reinforcing ribs 10 enhance the dust cover body 1's resistance to compression and tension. When the vehicle is subjected to external force during driving, the dust cover body 1 is prevented from deforming or breaking, thus ensuring its normal operation. At the same time, thickened layers are provided at the edges of the lower end 2 and the upper end 3. The thickened layers are achieved by increasing the thickness of the rubber material, which can improve the wear resistance and sealing of the edge parts. The thickened layer at the lower end 2 can prevent the edge from being worn during installation and disassembly, while the thickened layer at the upper end 3 can enhance the sealing effect at the contact part with the ball head, further preventing impurities from entering.

[0025] A U-shaped support frame 11 is fixedly installed on the outer side of the upper end 3. A fastening shaft 12 is rotatably connected through the middle of the U-shaped support frame 11 via a rotating shaft. A knob is fixedly installed on the top of the fastening shaft 12. An external thread is opened on the outer curved surface of the upper end of the fastening shaft 12. A fastening nut 13 for fastening the fastening shaft 12 is threaded on the outer curved surface of the upper end of the fastening shaft 12. Anti-slip stripes are opened on the bottom of the fastening nut 13. An elastic fastening band 14 is fixedly installed on the outer curved surface of the fastening shaft 12. A limit ring 15 is fixedly installed on the outer end of the upper end 3. There are several limit rings 15, which are symmetrically distributed on the outer end of the upper end 3. The elastic fastening band 14 is movably connected to the inner wall of the limit ring 15, so that the limit ring 15 limits the elastic fastening band 14.

[0026] During use, the first sealing ring 5 and the second sealing ring 7 at the lower end 2, along with the elastic fit of the rubber material at the upper end 3, form a double sealing barrier. This sealing structure can effectively prevent dust, mud, moisture, and other impurities from entering the steering ball pin of the car. Even under harsh environmental conditions, it can provide reliable protection for the steering ball pin and has excellent sealing performance. At the same time, the dust cover body 1 is made of high-quality rubber material and is equipped with strip reinforcing ribs 10 and a thickened layer. The flexibility and elasticity of the rubber material itself allow the dust cover body 1 to adapt to various vibrations and deformations during car driving. The strip reinforcing ribs 10 and the thickened layer enhance the strength and wear resistance of the dust cover, enabling it to withstand long-term friction and compression, and extending the service life of the dust cover.

[0027] Simultaneously, by rotating the fastening shaft 12 via the knob, the elastic fastening band 14 will also rotate and rewind as the fastening shaft 12 rotates and rewinds. As the elastic fastening band 14 rotates and rewinds, it will gradually tighten, squeezing the upper end 3. After the elastic fastening band 14 is tightened, the fastening nut 13 can be rotated to lock and tighten the fastening shaft 12. When the fastening shaft 12 is locked and tightened, it will cause the elastic fastening band 14 to always keep tightening and squeezing the upper end 3, thereby further enhancing the sealing effect between the upper end 3 and the ball head and preventing moisture and other impurities from seeping in through the through hole.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust cover for automotive steering ball pins, characterized in that: The dust cover body (1) is made of rubber material. The dust cover body (1) has a lower end (2) at the lower end and an upper end (3) at the upper end. The lower end (2) has a first mounting groove (4) at the lower end. A first sealing ring (5) is bonded to the inner wall of the first mounting groove (4). The lower end (2) has a second mounting groove (6) at the inner wall. A second sealing ring (7) is bonded to the inner wall of the second mounting groove (6). A positioning boss (8) is provided on the outer periphery of the lower end (2). An internal thread mounting hole (9) is provided through the center of the positioning boss (8). A strip reinforcing rib (10) is bonded to the outer surface of the dust cover body (1). A U-shaped support frame (11) is fixedly installed on the outer side of the upper end (3). A fastening shaft (12) is rotatably connected through the middle of the U-shaped support frame (11) via a rotating shaft. A fastening nut (13) for fastening the fastening shaft (12) is threadedly connected to the outer curved surface of the upper end of the fastening shaft (12). An elastic fastening band (14) is fixedly installed on the outer curved surface of the fastening shaft (12). A limit ring (15) is fixedly installed on the outer end of the upper end (3). The elastic fastening band (14) is movably connected to the inner wall of the limit ring (15).

2. The dust cover for automotive steering ball pins according to claim 1, characterized in that: The dust cover body (1) is generally horn-shaped, and the diameter of the through hole at the upper end (3) is smaller than the diameter of the ball head of the steering ball pin.

3. A dust cover for automotive steering ball joints according to claim 2, characterized in that: The first sealing ring (5) and the second sealing ring (7) are made of rubber. There are several positioning bosses (8), which are symmetrically distributed around the outer periphery of the lower end (2).

4. A dust cover for automotive steering ball pins according to claim 3, characterized in that: There are several strip-shaped reinforcing ribs (10), which are symmetrically distributed on the outer surface of the dust cover body (1).

5. A dust cover for automotive steering ball pins according to claim 4, characterized in that: Thickened layers are respectively provided at the edges of the lower end (2) and the upper end (3).

6. A dust cover for automotive steering ball pins according to claim 5, characterized in that: A knob is fixedly installed at the top of the fastening shaft (12), and an external thread is provided on the outer curved surface of the upper end of the fastening shaft (12).

7. A dust cover for automotive steering ball joints according to claim 6, characterized in that: The fastening nut (13) has anti-slip stripes at the bottom, and there are several limiting rings (15), which are symmetrically distributed around the outer end of the upper end (3).

Images