Hub end cover assembly

Abstract

The utility model discloses a hub end cover assembly which comprises an end cover shell and a plug body, the end cover shell is provided with a plug body mounting hole for mounting the plug body, the plug body is in interference fit with the plug body mounting hole, the plug body is provided with a groove, the top of the groove is provided with an elastic rubber top cover which can be deformed under pressure, and the elastic rubber top cover is provided with a sealing cover. The end cover shell comprises an inserting part and an inserting blocking table which are installed in cooperation with the hub, and a sealing ring is fixed to the inserting part. According to the hub end cover assembly, the difference between the internal pressure and the external pressure of the hub unit can be balanced, a sealing piece is prevented from losing efficacy, internal lubricating media are prevented from seeping out, the oil leakage failure rate of a product is further reduced, and therefore the service life of a hub is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a wheel hub end cover assembly. Background Art

[0002] Automobiles have become an indispensable tool for modern human activities. Especially in today's rapidly developing logistics landscape, the market demand for automobiles is increasing, leading to fierce competition. Therefore, the reliability of automotive components is particularly important in their application. As a key component of the vehicle chassis system, the reliability of the wheel is paramount. Furthermore, the wheel is a crucial component of the vehicle, crucial for driving safety and the safety of both drivers and passengers. The wheel hub end cap assembly, a key component of the wheel assembly, rotates with the wheel. As traditional hub units rotate with the wheel, the internal temperature of the hub unit rises, which in turn increases the internal pressure within the hub unit. This increased internal pressure makes the hub unit susceptible to seal failure and lubricant leakage, resulting in a high oil leakage rate and impacting the normal operation and service life of the hub unit.

[0003] Therefore, it is necessary to design an end cover assembly with superior quality and high reliability, which can reduce the oil leakage failure rate of the product and greatly improve the service life of the product. Utility Model Content

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a wheel hub end cover assembly, which can not only balance the pressure difference between the inside and outside of the wheel hub unit, avoid failure of the seal, and prevent leakage of the internal lubricating medium, but also reduce the oil leakage failure rate of the product.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A hub end cover assembly comprises an end cover shell and a plug body, wherein the end cover shell is provided with a plug body mounting hole for mounting the plug body, and the plug body is interference fit with the plug body mounting hole.

[0007] The plug body is provided with a groove, and the top of the groove is provided with an elastic rubber top cover which is deformable under pressure.

[0008] The end cover shell includes a plug-in portion and a plug-in stopper which are mounted in cooperation with the wheel hub, and a sealing ring is fixed to the plug-in portion.

[0009] Preferably, the plug body is configured as a rubber plug.

[0010] Preferably, the deformable elastic rubber top cover comprises a conical recess and a hemispherical shell convex portion located at the center of the plug body, and the conical recess and the hemispherical shell convex portion are transitioned through an arc.

[0011] Preferably, the plug body comprises a guide portion, a clamping groove and a limiting platform, the guide portion is provided with an oblique chamfer, the clamping groove is provided as an annular groove, and the limiting platform is a circular annular boss.

[0012] Preferably, the hole wall of the plug body mounting hole is interference fit with the clamping groove.

[0013] Preferably, a sealing ring installation groove is provided on the plug-in portion, and the sealing ring is fixedly installed in the sealing ring installation groove.

[0014] Preferably, a disassembly groove is provided on the plug-in stopper of the end cover housing.

[0015] After adopting the above technical solution, the beneficial effects of the utility model are:

[0016] The wheel hub end cover assembly of the present invention includes an end cover shell and a plug body. The end cover shell is provided with a plug body mounting hole for mounting the plug body. The plug body and the plug body mounting hole have an interference fit. The plug body is provided with a groove. The top of the groove is provided with an elastic rubber top cover that is deformable under pressure. The end cover shell includes a plug-in portion and a plug-in stopper that are mounted in cooperation with the wheel hub. The plug-in portion is fixed with a sealing ring. When the wheel hub unit is running, the internal temperature of the wheel hub unit rises, causing the pressure in the wheel hub unit's inner cavity to increase. At this time, the elastic rubber top cover of the plug body will deform and bulge outward due to its own elasticity to balance the pressure difference between the wheel hub unit's inner cavity and the outside pressure. When the internal pressure of the wheel hub unit is restored, the elastic rubber top cover of the plug body will return to its original shape due to its own structural stability. This function can effectively balance the internal and external pressures, avoid failure of the seal due to excessive pressure in the wheel hub unit's inner cavity, and prevent leakage of the internal lubricating medium, thereby reducing the oil leakage failure rate of the product. The service life of the wheel hub unit is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the wheel hub end cover assembly of the utility model;

[0018] Figure 2 It is a three-dimensional structural diagram of the wheel hub end cover assembly of the utility model from another perspective;

[0019] Figure 3 yes Figure 2 Schematic diagram of the front view in ;

[0020] Figure 4 yes Figure 3 Schematic cross-sectional view at AA in the middle;

[0021] Figure 5 It is a structural diagram of the plug body;

[0022] Figure 6 is a schematic cross-sectional view of the plug body;

[0023] In the figure: 1. End cover shell; 101. Plug body mounting hole; 102. Plug-in portion; 1021. Mounting groove; 103. Plug-in stop; 104. Disassembly groove; 2. Plug body; 201. Groove; 202. Elastic rubber top cover; 2021. Conical recess; 2022. Hemispherical shell-shaped protrusion; 203. Guide portion; 204. Snap-in groove; 205. Limiting platform; 3. Sealing ring. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the claims attached to the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0026] In addition, although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0027] The utility model discloses Figures 1 to 4 The hub end cover assembly shown includes an end cover shell 1 and a plug body 2. A plug body mounting hole 101 for mounting the plug body 2 is provided on the end cover shell 1. The plug body 2 is interference fit with the plug body mounting hole 101. The plug body 2 is provided with a groove 201. The top of the groove 201 is provided with an elastic rubber top cover 202 that is deformable under pressure. The end cover shell 1 includes a plug-in portion 102 and a plug-in stop 103 that are installed in cooperation with the wheel hub. The plug-in portion 102 is fixed with a sealing ring 3.

[0028] When the hub unit is running, the internal temperature of the hub unit rises, causing the pressure in the hub unit cavity to increase. At this time, the elastic rubber cover 202 of the plug body 2 will deform and bulge outward due to its own elasticity to balance the pressure difference between the hub unit cavity and the external pressure. When the internal pressure of the hub unit is restored, the elastic rubber cover 202 of the plug body 2 will return to its original shape due to its own structural stability. This function can effectively balance the internal and external pressures, avoid seal failure caused by excessive internal pressure of the hub unit, and prevent the internal lubricating medium from leaking, thereby reducing the product's oil leakage failure rate. This greatly improves the service life of the hub unit.

[0029] In some embodiments, the stopper body 2 is preferably configured as a rubber stopper.

[0030] In some embodiments, as Figures 4 to 6 As shown, the deformable elastic rubber cover 202 includes a conical recess 2021 and a hemispherical protrusion 2022 located at the center of the plug body 2. The conical recess 2021 and the hemispherical protrusion 2022 are transitioned by a circular arc. This structure allows the elastic rubber cover 202 to easily deform and bulge outward when the pressure in the hub unit increases, thereby balancing the pressure difference between the inside and outside of the hub unit.

[0031] like Figure 4 As shown, the plug body 2 includes a guide portion 203, a snap-fit ​​groove 204, and a limit platform 205. The guide portion 203 is provided with an oblique chamfer, the snap-fit ​​groove 204 is provided as an annular groove, and the limit platform 205 is a circular annular boss. When the plug body 2 is installed with the end cover housing 1, the guide portion 203 facilitates the insertion of the front end of the plug body 2 into the plug body mounting hole 101 for easy installation. The limit platform 205 prevents the plug body 2 from completely entering the plug body mounting hole 101. The provision of the annular groove plays a positioning role and can prevent the plug body 2 from falling out of the plug body mounting hole 101 when the air pressure in the inner cavity of the hub unit is too high.

[0032] In some embodiments, as Figure 4 As shown, the hole wall of the plug body mounting hole 101 and the clamping groove 204 are interference-fitted to prevent air leakage between the plug body mounting hole 101 and the plug body 2.

[0033] The plug-in portion 102 is provided with a sealing ring 3 mounting groove 1021, and the sealing ring 3 is fixedly installed in the sealing ring 3 mounting groove 1021. The sealing ring 3 is installed on the hub unit together with the end cover housing 1 to achieve sealing performance and effectively reduce the risk of oil leakage from the end cover.

[0034] like Figure 1 and Figure 2 As shown, a disassembly groove 104 is provided on the plug-in stop 103 of the end cover housing 1. After the hub unit is installed on the wheel, the lubricating oil needs to be replaced for maintenance. The setting of the disassembly groove 104 facilitates the secondary disassembly and assembly of the hub end cover assembly.

[0035] The hub end cover assembly of the utility model can not only balance the pressure difference between the inside and outside of the hub unit, avoid failure of the seal, and prevent leakage of the internal lubricating medium, but also reduce the oil leakage failure rate of the product, thereby extending the service life of the hub.

[0036] The technical solution of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Those skilled in the art should understand that various changes made thereto in form and details fall within the scope of protection defined by the claims of the present invention.

Claims

1. A hub end cover assembly, characterized in that: It includes an end cover shell and a plug body, wherein the end cover shell is provided with a plug body mounting hole for mounting the plug body, and the plug body is interference-fitted with the plug body mounting hole. The plug body is provided with a groove, and the top of the groove is provided with an elastic rubber top cover which is deformable under pressure. The end cover shell includes a plug-in portion and a plug-in stopper which are mounted in cooperation with the wheel hub, and a sealing ring is fixed to the plug-in portion.

2. The hub end cover assembly according to claim 1, characterized in that: The stopper body is configured as a rubber stopper.

3. The hub end cover assembly according to claim 2, characterized in that: The deformable elastic rubber top cover includes a conical recess and a hemispherical shell convex portion located at the center of the plug body, and the conical recess and the hemispherical shell convex portion are transitioned through an arc.

4. The hub end cover assembly according to claim 3, characterized in that: The plug body includes a guide portion, a clamping groove and a limiting platform. The guide portion is provided with an oblique chamfer, the clamping groove is configured as an annular groove, and the limiting platform is a circular annular boss.

5. The hub end cover assembly according to claim 4, characterized in that: The hole wall of the plug body mounting hole is interference fit with the clamping groove.

6. The hub end cover assembly according to claim 1, characterized in that: A sealing ring installation groove is provided on the plug-in portion, and the sealing ring is fixedly installed in the sealing ring installation groove.

7. The hub end cover assembly according to claim 1, characterized in that: A disassembly groove is provided on the plug-in stopper of the end cover housing.

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