Universal joint anti-scratching dust cover

Abstract

The utility model discloses a universal joint scratchproof dust cover belongs to the automobile manufacturing technical field. It mainly includes: the main body, the main body whole is by a plurality of wave peak surface and the wave valley surface alternation and is composed of the wave structure, and the main body side wall is by multiple layers material mutual superposition and is constituted, the main body inside is equipped with the cavity, and is equipped with the front opening and rear opening respectively, wherein the diameter of front opening is less than the diameter of rear opening. The utility model discloses through the side wall adopts multiple materials and is superimposed and forms the composite structure, has effectively improved the overall structural strength of universal joint dust cover. The utility model is mainly used for the protection of the vehicle universal joint.

Description

Technical Field

[0001] This utility model belongs to the field of automobile manufacturing technology, and more specifically, it relates to a universal joint anti-scratch and dust cover. Background Technology

[0002] As a core component of the automotive transmission system, the reliability of the universal joint directly affects the vehicle's driving performance and safety. The universal joint dust cover is a crucial component for protecting the universal joint, primarily used to seal the lubricating grease, prevent the intrusion of external dust, mud, gravel, and other impurities, avoid the failure of internal parts due to wear and corrosion, and ensure stable transmission of the drive shaft.

[0003] With the development of the off-road vehicle market, more and more users are driving off-road vehicles to challenge extreme road conditions, frequently traversing complex environments such as rocky sections, jungle crossing routes, and rugged ditches. Existing universal joint dust covers are mostly made of a single flexible rubber material, lacking a targeted anti-scratch design in their structure. When passing through complex road conditions, they are very prone to direct scratches or collisions with road protrusions, rock edges, shrub branches, etc.

[0004] Such scratches can damage, crack, or even tear the surface of the dust cover, leading to internal grease leakage. Simultaneously, a large amount of external impurities can enter the universal joint, causing severe wear, jamming, or abnormal noise in critical components such as the universal joint bearings and cross shafts. Over time, this not only reduces the lifespan of the universal joint but may also cause driveshaft failure, posing a significant safety hazard to off-road vehicles and increasing maintenance costs and frequency for users.

[0005] Currently, there are no existing technologies that specifically design anti-scratch universal joint dust covers for off-road vehicles in complex road conditions, which cannot meet the special protective performance requirements of off-road vehicles under extreme driving scenarios. Therefore, developing a universal joint dust cover with efficient anti-scratch function and adaptability to complex road conditions has become an urgent technical problem to be solved in this field. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a universal joint anti-scratch and dustproof cover, the side wall of which adopts a composite structure formed by the superposition of multiple materials, which effectively improves the overall structural strength of the universal joint dustproof cover.

[0007] The aforementioned universal joint anti-scratch and dustproof cover includes a main body, the main body being composed of a wave-like structure consisting of multiple alternating crests and troughs, and the sidewalls of the main body being composed of multiple layers of materials stacked together; the main body has an internal cavity, and front openings and rear openings are respectively provided at both ends, wherein the diameter of the front opening is smaller than the diameter of the rear opening.

[0008] Preferably, the main body sidewall includes a cotton cloth layer, a first rubber layer, a steel wire layer, and a second rubber layer. The cotton cloth layer is disposed on the outermost side of the sidewall, and the first rubber layer is fixed to the inner side of the cotton cloth layer. The steel wire layer is fixed to the side of the first rubber layer facing away from the cotton cloth layer, and the second rubber layer is fixed to the side of the steel wire layer facing away from the first rubber layer.

[0009] Preferably, a first hoop is fixed at the edge of the front opening, and a second hoop is fixed at the edge of the rear opening.

[0010] Preferably, the first hoop and the second hoop have the same structure; wherein the inner diameter of the first hoop is the same as the outer diameter of the front opening, and the inner diameter of the second hoop is the same as the outer diameter of the rear opening.

[0011] Preferably, both the first and second hoop rings are composed of annular rubber sleeves and multiple locking mechanisms, wherein the locking mechanisms engage with the edge of the front opening or the edge of the rear opening; and the annular rubber sleeves are fitted onto the outer wall of the locking mechanisms.

[0012] Preferably, the locking mechanism includes a fixed ring and a locking ring. The fixed ring has an "L"-shaped cross-section, with multiple insert rods protruding from its end, and the surface of the insert rods is provided with multiple protruding teeth. The locking ring also has an "L"-shaped cross-section, with multiple locking grooves at its end that are adapted to the insert rods, and the locking grooves are provided with holes that are adapted to the protruding teeth. When the insert rods are inserted into the locking grooves, their protruding teeth are embedded in the holes.

[0013] Preferably, the fixing ring and locking ring have teeth on the side that contacts the main body.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The sidewalls are made of multiple materials stacked together to form a composite structure, which effectively improves the overall structural strength of the universal joint dust cover. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a partially enlarged structural diagram of point A of this utility model; Figure 4 This is a schematic diagram of the hoop structure of this utility model.

[0016] In the diagram, 1. Main body; 11. Crest surface; 12. Trough surface; 13. Cavity; 131. Front opening; 132. Rear opening; 14. Cotton cloth layer; 15. First rubber layer; 16. Steel wire layer; 17. Second rubber layer; 2. First hoop ring; 3. Second hoop ring; 4. Annular rubber sleeve; 5. Locking mechanism; 51. Fixing ring; 511. Embedded rod; 512. Convex tooth; 513. Tooth; 52. Locking ring; 521. Locking groove; 522. Hole. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] like Figure 1 and Figure 2 As shown, a universal joint anti-scratch dust cover includes a main body 1. The main body 1 has a wave-like structure composed of multiple alternating crests 11 and troughs 12, and the sidewalls of the main body 1 are composed of multiple layers of materials stacked together to form a composite structure. The main body 1 has an internal cavity 13, with a front opening 131 and a rear opening 132 at each end, wherein the diameter of the front opening 131 is smaller than the diameter of the rear opening 132. This composite structure formed by the stacking of multiple layers of different materials not only improves the overall structural strength of the dust cover but also enhances its anti-scratch capability. This prevents damage to the dust cover when the off-road vehicle experiences scratches or collisions with obstacles, road bumps, rock edges, bush supports, etc., during high-intensity off-road driving. It also ensures that the internal lubricating grease does not leak out and prevents external impurities from entering the dust cover and damaging the mechanical structure.

[0019] like Figure 2As shown, the sidewall of the main body 1 includes a cotton cloth layer 14, a first rubber layer 15, a steel wire layer 16, and a second rubber layer 17. The cotton cloth layer 14 is located on the outermost side of the sidewall, and the first rubber layer 15 is fixed to the inner side of the cotton cloth layer 14. The steel wire layer 16 is fixed to the side of the first rubber layer 15 facing away from the cotton cloth layer 14, and the second rubber layer 17 is fixed to the side of the steel wire layer 16 facing away from the first rubber layer 15. Thus, a composite structure is formed by the superposition of multiple materials. The cotton cloth layer 14 enhances the cushioning and scratch resistance of the outer wall of the dust cover, achieving auxiliary protection. The steel wire layer 16, sandwiched between the first rubber layer 15 and the second rubber layer 17, improves the overall structural strength of the dust cover, making it less prone to deformation and damage when subjected to scratches or impacts. The first rubber layer 15 and the second rubber layer 17 provide the main cushioning capacity for the dust cover, effectively reducing the impact force when the dust cover is scratched or struck.

[0020] like Figure 1 and Figure 2 As shown, a first hoop ring 2 is fixed at the edge of the front opening 131, and a second hoop ring 3 is fixed at the edge of the rear opening 132. In this way, by adding hoop rings, the edges of the composite structure can be protected and fixed, making the composite structure less likely to fall apart when scratched or impacted, thus improving the integrity of the composite structure.

[0021] like Figure 2 and 3 As shown, the first hoop 2 and the second hoop 3 have the same structure; wherein, the inner diameter of the first hoop 2 is the same as the outer diameter of the front opening 131, and the inner diameter of the second hoop 3 is the same as the outer diameter of the rear opening 132.

[0022] like Figure 3 and Figure 4 As shown, the first hoop 2 and the second hoop 3 are both composed of annular rubber sleeves 4 and multiple locking mechanisms 5. The locking mechanisms 5 engage with the edge of the front opening 131 or the edge of the rear opening 132. The annular rubber sleeves 4 are sleeved on the outer wall of the locking mechanisms 5.

[0023] like Figure 3 and Figure 4As shown, the locking mechanism 5 includes a fixing ring 51 and a locking ring 52. The fixing ring 51 has an "L"-shaped cross-section, with multiple insert rods 511 protruding from its end, and multiple protruding teeth 512 on the surface of the insert rods 511. The locking ring 52 also has an "L"-shaped cross-section, with multiple locking grooves 521 at its end that fit the insert rods 511, and holes 522 in the locking grooves 521 that fit the protruding teeth 512. When the insert rods 511 are inserted into the locking grooves 521, their protruding teeth 512 are inserted into the holes 522. Thus, when the fixing ring 51 and the locking ring 52 are connected, the insert rods 511 on the fixing ring 51 are inserted into the locking grooves 521, and the locking of the insert rods 511 is completed by the cooperation of the protruding teeth 512 and the holes 522, so that the fixing ring 51 and the locking ring 52 are firmly engaged at the end of the composite structure, thereby protecting and reinforcing the end of the composite structure.

[0024] like Figure 4 As shown, the fixing ring 51 and the locking ring 52 are provided with teeth 513 on the side that contacts the main body 1. In this way, the teeth 513 can improve the connection between the fixing ring 51 and the locking ring 52, making it less likely for them to detach from the composite structure.

[0025] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A universal joint anti-scratch and dustproof cover, comprising a main body (1), characterized in that: The main body (1) is composed of a wave-like structure consisting of multiple alternating crest surfaces (11) and trough surfaces (12), and the sidewalls of the main body (1) are composed of multiple layers of materials superimposed on each other; the main body (1) has a cavity (13) inside, and front opening (131) and rear opening (132) are respectively provided at both ends, wherein the diameter of the front opening (131) is smaller than the diameter of the rear opening (132).

2. The universal joint anti-scratch and dustproof cover according to claim 1, characterized in that: The sidewall of the main body (1) includes a cotton cloth layer (14), a first rubber layer (15), a steel wire layer (16), and a second rubber layer (17). The cotton cloth layer (14) is located on the outermost side of the sidewall, and the first rubber layer (15) is fixed to the inner side of the cotton cloth layer (14). The steel wire layer (16) is fixed to the side of the first rubber layer (15) facing away from the cotton cloth layer (14). The second rubber layer (17) is fixed to the side of the steel wire layer (16) facing away from the first rubber layer (15).

3. The universal joint anti-scratch and dustproof cover according to claim 1, characterized in that: A first hoop (2) is fixed at the edge of the front opening (131), and a second hoop (3) is fixed at the edge of the rear opening (132).

4. A universal joint anti-scratch and dustproof cover according to claim 3, characterized in that: The first hoop (2) and the second hoop (3) have the same structure; wherein the inner diameter of the first hoop (2) is the same as the outer diameter of the front opening (131), and the inner diameter of the second hoop (3) is the same as the outer diameter of the rear opening (132).

5. A universal joint anti-scratch and dustproof cover according to claim 3, characterized in that: The first hoop (2) and the second hoop (3) are both composed of annular rubber sleeve (4) and multiple locking mechanisms (5). The locking mechanism (5) engages with the edge of the front opening (131) or the edge of the rear opening (132). The annular rubber sleeve (4) is fitted on the outer wall of the locking mechanism (5).

6. A universal joint anti-scratch and dustproof cover according to claim 5, characterized in that: The locking mechanism (5) includes a fixing ring (51) and a locking ring (52). The fixing ring (51) has an "L" shaped cross section and multiple insert rods (511) protruding from its end. The surface of the insert rods (511) is provided with multiple protruding teeth (512). The locking ring (52) also has an "L" shaped cross section and multiple locking grooves (521) adapted to the insert rods (511) are provided at its end. The locking grooves (521) are provided with holes (522) adapted to the protruding teeth (512). When the insert rods (511) are inserted into the locking grooves (521), their protruding teeth (512) are embedded in the holes (522).

7. A universal joint anti-scratch and dustproof cover according to claim 6, characterized in that: The fixing ring (51) and locking ring (52) are provided with teeth (513) on the side that contacts the main body (1).

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