Automobile steering tie rod ball head anti-wear protective sleeve

Abstract

The utility model discloses automobile steering drag link ball head anti -wear protection sleeve, including the rubber bushing main part, the rubber bushing main part inner wall is seted up with first installation groove and second installation groove, the rubber bushing main part lateral wall is equipped with the first protection mechanism for the protection rubber bushing main part, the first protection mechanism includes the first thickening cover fixedly connected in the rubber bushing main part lateral wall, the rubber bushing main part lateral wall is fixedly connected with second thickening cover, the utility model sets up the first protection mechanism, through the first thickening cover of rubber bushing main part lateral wall, second thickening cover increases the rubber thickness of high frequency swing area, avoids the local thickness thinning caused by the clamp extrusion, and the first thickening cover, second thickening cover forms the elastic buffer layer, reduces the tensile fatigue when the ball head swings, and the abrasion rate is reduced greatly.

Description

Technical Field

[0001] This utility model relates to the technical field of protective sleeves for automotive steering tie rod ball joints, and more particularly to anti-wear protective sleeves for automotive steering tie rod ball joints. Background Technology

[0002] As a key protective component for automotive steering tie rod ball joints, the main function of the ball joint protective sleeve is to prevent external impurities such as mud, water, and dust from entering the ball joint, while preventing the loss of internal lubricant. This ensures that the ball joint can swing at multiple angles under low friction and low wear conditions, thereby guaranteeing the long-term stable operation of the steering system.

[0003] However, existing traditional automotive steering tie rod ball joint protective sleeves are mostly flared sleeve structures made of a single rubber material with a uniform wall thickness. In actual installation and use, the protective sleeve needs to be fixed to the steering rod and ball joint using clamps. Due to the uniform wall thickness, when the clamps are tightened, concentrated compression occurs in the local area where the protective sleeve contacts the rod, causing plastic deformation of the rubber in that area and a significant reduction in thickness. Over long-term use, the thinned rubber area will wear down faster due to the high-frequency oscillation of the ball joint and friction from dirt and sand, eventually leading to cracks or damage. To solve the above problems, this utility model proposes an anti-wear protective sleeve for automotive steering tie rod ball joints. Utility Model Content

[0004] The main purpose of this utility model is to provide a wear-resistant protective sleeve for the ball joint of automotive steering tie rods, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A wear-resistant protective sleeve for automotive steering tie rod ball joints includes a sleeve body. The inner wall of the sleeve body has a first mounting groove and a second mounting groove. The side wall of the sleeve body has a first protective mechanism for protecting the sleeve body. The first protective mechanism includes a first thickening sleeve fixedly connected to the side wall of the sleeve body, and a second thickening sleeve fixedly connected to the side wall of the sleeve body. The sleeve body also has a second protective mechanism for protecting the sleeve body.

[0006] Preferably, the second protective mechanism includes a dust cover placed on the rubber sleeve body, the dust cover having a trumpet-shaped cross-section.

[0007] Preferably, the first mounting groove is provided with a first sealing ring, which is made of fluororubber and nano-ceramic particles.

[0008] Preferably, a second sealing ring is provided in the second mounting groove, and the second sealing ring is also made of fluororubber and nano-ceramic particles.

[0009] Preferably, the second thickened sleeve sidewall is fixedly connected to two first limiting rings, and the first thickened sleeve sidewall is fixedly connected to two second limiting rings.

[0010] Preferably, a third limiting ring is fixedly connected to the side wall of the dust cover, and the side wall of the dust cover is provided with an inclined surface.

[0011] Preferably, the sidewall of the rubber sleeve body is coated with a first wear-resistant coating, and the sidewall of the dust cover is coated with a second wear-resistant coating.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This device is equipped with a first protective mechanism, which increases the rubber thickness in the high-frequency swing zone by the first thickening sleeve and the second thickening sleeve on the side wall of the rubber sleeve body, avoiding local thickness reduction caused by clamp compression. At the same time, the first thickening sleeve and the second thickening sleeve form an elastic buffer layer, reducing tensile fatigue during ball head swing and significantly reducing the wear rate. 2. This device is equipped with a second protective mechanism. The dust cover forms a secondary protection above the main body of the rubber cover, which further reduces the probability of impurities contacting the main body of the rubber cover, thereby improving the wear resistance of the protective cover. 3. This device is equipped with a first sealing ring and a second sealing ring. The first sealing ring and the second sealing ring are made of fluororubber + nano ceramic particles and are integrally vulcanized in vacuum to form a double-end zero-gap seal, which can effectively prevent the intrusion of mud and water and avoid the sealing failure caused by the loosening and wear of traditional sealing rings. 4. This device is equipped with a first wear-resistant coating and a second wear-resistant coating, which can significantly improve the surface hardness of the rubber sleeve body and the dust cover, and can directly resist scratches from mud and sand. Compared with traditional uncoated protective sleeves, its scratch resistance is greatly improved and its ability to adapt to harsh road conditions is stronger. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the anti-wear protective sleeve for the ball joint of the automotive steering tie rod proposed in this utility model; Figure 2 This is a side view of the anti-wear protective sleeve for the ball joint of the automotive steering tie rod proposed in this utility model; Figure 3 This is another side view of the anti-wear protective sleeve for the ball joint of the automotive steering tie rod proposed in this utility model.

[0014] In the figure: 1. Rubber sleeve body, 2. First thickened sleeve, 3. Second thickened sleeve, 4. First limiting ring, 5. Second limiting ring, 6. First mounting groove, 7. First sealing ring, 8. Second mounting groove, 9. Second sealing ring, 10. First wear-resistant coating, 11. Dustproof sleeve, 12. Second wear-resistant coating, 13. Third limiting ring. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] like Figure 1-3 As shown, the wear-resistant protective sleeve for the ball joint of the automotive steering tie rod includes a sleeve body 1. The inner wall of the sleeve body 1 has a first mounting groove 6 and a second mounting groove 8. The side wall of the sleeve body 1 is provided with a first protective mechanism for protecting the sleeve body 1. The first protective mechanism includes a first thickening sleeve 2 fixedly connected to the side wall of the sleeve body 1 and a second thickening sleeve 3 fixedly connected to the side wall of the sleeve body 1. The first thickening sleeve 2, the second thickening sleeve 3 and the sleeve body 1 are integrally formed by compression molding and vulcanization. The sleeve body 1 is made of hydrogenated nitrile rubber material.

[0017] The rubber sleeve body 1 is provided with a second protective mechanism for protecting the rubber sleeve body 1. The second protective mechanism includes a dust cover 11 placed on the rubber sleeve body 1. The dust cover 11 has a trumpet-shaped cross section.

[0018] In this utility model, a first sealing ring 7 is provided in the first mounting groove 6. The first sealing ring 7 and the rubber sleeve body 1 are integrally formed by vacuum molding and vulcanization process, eliminating the risk of gaps in the split structure, ensuring the bonding strength between it and the rubber sleeve body 1, and preventing the sealing ring from falling off during movement. The first sealing ring 7 is made of fluororubber and nano-ceramic particles. Fluororubber has excellent wear resistance, elasticity and aging resistance. By adding 5%-10% nano-ceramic particles (such as alumina) or carbon fiber to the rubber, the surface hardness and scratch resistance are improved by "particle reinforcement".

[0019] In this utility model, a second sealing ring 9 is provided in the second mounting groove 8. The second sealing ring 9 and the rubber sleeve body 1 are integrally formed by vacuum molding and vulcanization process, eliminating the risk of gaps in the split structure, ensuring the bonding strength between it and the rubber sleeve body 1, and preventing the sealing ring from falling off during movement. The second sealing ring 9 is also made of fluororubber and nano-ceramic particles. Fluororubber has excellent wear resistance, elasticity and aging resistance. By adding 5%-10% nano-ceramic particles (such as alumina) or carbon fiber to the rubber, the surface hardness and scratch resistance are improved by "particle reinforcement".

[0020] In this invention, two first limiting rings 4 are fixedly connected to the side wall of the second thickened sleeve 3, and two second limiting rings 5 ​​are fixedly connected to the side wall of the first thickened sleeve 2. The two first limiting rings 4 and the two second limiting rings 5 ​​can precisely limit the installation position of the clamp, preventing the clamp from sliding on the second thickened sleeve 3 and the first thickened sleeve 2 due to vehicle vibration, thereby ensuring the stable fit between the protective sleeve and the rod body, indirectly reducing wear caused by sliding friction, and improving the overall wear resistance of the protective sleeve. The second sealing ring 9 and the first sealing ring 7 form a "double-end sealing" structure, respectively corresponding to the connection parts of the rubber sleeve body 1 and the steering rod and ball joint rod. The double sealing can greatly improve the reliability of protection. Even if a single sealing ring is slightly worn, the other sealing ring can still maintain the basic sealing effect and prevent impurities from directly intruding. Its material and molding process are the same as the first sealing ring 7, which can ensure the consistency of wear resistance and life of the double-end sealing, avoiding the problem of easy failure of the single-end sealing of traditional protective sleeves.

[0021] In this utility model, a third limiting ring 13 is fixedly connected to the side wall of the dust cover 11 to prevent the clamp from sliding on the dust cover 11 and improve the wear resistance of the dust cover 11. The side wall of the dust cover 11 is provided with a slope to reduce dust residue on the dust cover 11.

[0022] In this utility model, the side wall of the rubber sleeve body 1 is sprayed with a first wear-resistant coating 10, and the side wall of the dust cover 11 is sprayed with a second wear-resistant coating 12. The first wear-resistant coating 10 and the second wear-resistant coating 12 are plasma-sprayed ceramic coatings or chemically plated nickel-phosphorus alloys, forming a protective layer with high hardness and wear resistance. For example, the ceramic coating can increase the surface hardness of the rubber from Shore A70 to HV500 or more, effectively resisting scratches from mud and sand.

[0023] When using, remove the dust cover 11, first apply grease to the connection between the ball joint and the steering tie rod, then put the rubber sleeve body 1 on the bottom of the ball joint and place it on the steering tie rod. Use two clamps to fix the rubber sleeve body 1 to the steering tie rod and the ball joint respectively (the clamps are common components of ball joint rubber sleeves in existing technology). Compared with the traditional flared rubber sleeve, the first thickened sleeve 2 and the second thickened sleeve 3 can form an "elastic buffer layer" by increasing the rubber thickness in the "high frequency swing zone" where the rubber sleeve contacts the ball joint, thereby reducing tensile fatigue during movement and improving its wear resistance. Next, put the dust cover 11 onto the ball head and use clamps to restrain the dust cover 11 above the rubber sleeve body 1, so that mud and sand are not easily in direct contact with the connection gap between the rubber sleeve body 1 and the ball head, thereby reducing the entry of mud and sand into the gap.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant protective sleeve for the ball joint of an automotive steering tie rod, comprising a sleeve body (1), characterized in that, The inner wall of the rubber sleeve body (1) is provided with a first mounting groove (6) and a second mounting groove (8). The side wall of the rubber sleeve body (1) is provided with a first protective mechanism for protecting the rubber sleeve body (1). The first protective mechanism includes a first thickening sleeve (2) fixedly connected to the side wall of the rubber sleeve body (1). The side wall of the rubber sleeve body (1) is fixedly connected with a second thickening sleeve (3). The rubber sleeve body (1) is provided with a second protective mechanism for protecting the rubber sleeve body (1).

2. The anti-wear protective sleeve for the ball joint of the automotive steering tie rod according to claim 1, characterized in that, The second protective mechanism includes a dust cover (11) placed on the rubber sleeve body (1), and the dust cover (11) has a trumpet-shaped cross section.

3. The anti-wear protective sleeve for the ball joint of the automotive steering tie rod according to claim 2, characterized in that, The first mounting groove (6) is provided with a first sealing ring (7), which is made of fluororubber and nano-ceramic particles.

4. The anti-wear protective sleeve for the ball joint of the automotive steering tie rod according to claim 3, characterized in that, The second mounting groove (8) is provided with a second sealing ring (9), which is also made of fluororubber and nano-ceramic particles.

5. The anti-wear protective sleeve for the ball joint of the automotive steering tie rod according to claim 4, characterized in that, The second thickened sleeve (3) has two first limiting rings (4) fixedly connected to its side wall, and the first thickened sleeve (2) has two second limiting rings (5) fixedly connected to its side wall.

6. The anti-wear protective sleeve for the ball joint of the automotive steering tie rod according to claim 5, characterized in that, The dust cover (11) has a third limiting ring (13) fixedly connected to its side wall, and the side wall of the dust cover (11) has an inclined surface.

7. The anti-wear protective sleeve for the ball joint of the automotive steering tie rod according to claim 2, characterized in that, The side wall of the rubber sleeve body (1) is coated with a first wear-resistant coating (10), and the side wall of the dust cover (11) is coated with a second wear-resistant coating (12).

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