Hub bearing with sealing structure

Abstract

The hub bearing with the sealing structure comprises an inner ring and an outer ring, a first convex edge is arranged on the peripheral wall of the inner ring in an extending mode, and a second convex edge is arranged at the position, corresponding to the upper end of the first convex edge, of the peripheral wall of the outer ring in an extending mode. A sealing space used for being sealed with external equipment is formed between the first convex edge and the second convex edge, a first blind hole is formed in the second convex edge, a penetrating hole and a double-thread screw are arranged at the position, corresponding to the lower end of the first blind hole, of the first convex edge, the penetrating hole is connected with the double-thread screw in a sealed mode, and a sealing piece is arranged between the penetrating hole and the double-thread screw. The hub bearing has the advantages of better sealing property, better sealing effect and simple structure.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a hub bearing with a sealing structure. Background Art

[0002] The hub bearing is an important part of an automobile, mainly responsible for supporting the weight of the vehicle, transmitting the driving force, and reducing friction. With the development of technology, the hub bearing unit has developed to the fourth generation. The technological development of the hub bearing includes the use of high-performance sealing rings, the application of rotary forging technology, lightweight and miniaturized design, and the optimization of low friction torque. The high-performance sealing ring can adapt to harsh driving environments, prevent grease leakage and pollutants from entering. On existing hub bearings, a relatively large number of bolts or perforations for fixing the bearing are used to enhance the connection strength between the bearing and the equipment. However, the positions of these bolt connections or perforations are prone to poor sealing, allowing dust to enter the bearing interior and affecting the operation of the bearing. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a hub bearing with a sealing structure. This hub bearing has good sealing performance, better sealing effect, and a simple structure.

[0004] To achieve the above object, the utility model provides a hub bearing with a sealing structure, including an inner ring and an outer ring. A first convex edge is extendedly provided on the outer peripheral wall of the inner ring, and a second convex edge is extendedly provided on the outer peripheral wall of the outer ring corresponding to the upper end position of the first convex edge. A sealing space for forming a seal with an external device is formed between the first convex edge and the second convex edge. A first blind hole is provided on the second convex edge, and a perforation and a double-headed screw are provided at the lower end of the first convex edge corresponding to the first blind hole. The perforation and the double-headed screw are hermetically connected, and a sealing member is provided between the perforation and the double-headed screw.

[0005] The effect that can be produced by adopting the above technical solution is that the design allows the double-headed screw to be adjusted and fixed through the perforation while maintaining the sealing performance of the entire structure, and the presence of the sealing member ensures that no leakage occurs during the adjustment and fixing process. This structure can not only form a stable sealing space in combination, but also, through the coordinated use of the double-headed screw and the perforation, enable higher adjustment precision of the equipment, while ensuring the sealing reliability during the adjustment process, improving the use flexibility and sealing performance of the equipment.

[0006] The utility model is further provided that: the sealing member includes a first sealing gasket provided on the upper end surface of the first convex edge and a sealing groove circumferentially provided around the first sealing gasket. A second sealing gasket is embedded in the sealing groove, and the double-headed screw can cooperate with the first sealing gasket and the second sealing gasket to form a seal.

[0007] The effects that can be achieved by adopting the above technical solutions are as follows: By providing a sealing groove and embedding the second sealing gasket in the sealing groove, it is not easy to come off, improving the connection stability. By providing a double-headed screw, a first sealing gasket and a second sealing gasket to form a seal, the sealing effect can be better. With multiple seals for waterproofing and dustproofing, it is not easy for external dust to enter the bearing interior, increasing the service life of the bearing.

[0008] The present utility model is further provided with: The bottom wall of the sealing groove is provided with corrugated protrusions, and the second sealing gasket is an elastic sealing gasket.

[0009] The effects that can be achieved by adopting the above technical solutions are as follows: The bottom wall of the sealing groove adopts a design with corrugated protrusions. This structure can increase the sealing contact area, improve the sealing effect, and the corrugated protrusions can better adapt to the slight unevenness between the sealing gasket and the sealing surface, thereby improving the reliability of the seal. Moreover, the corrugated protrusions are not easy to cause the second sealing gasket to move, improving the connection stability.

[0010] The present utility model is further provided with: The first sealing gasket is adhesively provided on the upper end surface of the first convex edge.

[0011] The effects that can be achieved by adopting the above technical solutions are as follows: The first sealing gasket is tightly combined with the upper end surface of the first convex edge by adhesive bonding. This design not only improves the sealing performance but also enhances the structural stability. By fixing with adhesive, the displacement and wear of the sealing gasket during operation can be reduced, thereby extending the service life of the equipment. At the same time, it is also convenient for installation and maintenance.

[0012] The present utility model is further provided with: The second convex edge is further provided with a second blind hole, and the inner diameter of the first blind hole is larger than the inner diameter of the second blind hole.

[0013] The effects that can be achieved by adopting the above technical solutions are as follows: Adopting the blind hole structure enables no perforation to appear on the bearing, enabling a seal to be formed between one side of the blind hole and the bearing. And blind holes of different sizes can be suitable for different fixing components, improving the installation accuracy and also enhancing the sealing performance of the bearing.

[0014] The present utility model is further provided with: A third sealing gasket is circumferentially provided at the position between the double-headed screw corresponding to the first sealing gasket and the second sealing gasket, and the first sealing gasket, the second sealing gasket and the third sealing gasket are arranged in a staggered seal.

[0015] The effects that can be achieved by adopting the above technical solutions are as follows: By using a double-headed screw structure with misaligned seals and circumferentially arranging a third seal between the first seal and the second seal, a misaligned configuration of triple seals is realized. This design improves the sealing performance, effectively prevents the intrusion of most moisture and impurities, thereby extending the service life of the hub bearing and enhancing its reliability. At the same time, the misaligned arrangement enhances the interaction between the seals, making the overall structure more stable and reducing the risk of bearing damage caused by poor sealing. Description of the Drawings

[0016] Figure 1 It is a cross-sectional view of an embodiment of the present invention;

[0017] Figure 2 It is an exploded view of the partial structure of an embodiment of the present invention. Detailed Implementation Manner

[0018] The implementation example of a hub bearing with a sealing structure according to the present utility model is shown in the figure, including an inner ring 1 and an outer ring 2. A first convex edge 11 is extendedly provided on the outer peripheral wall of the inner ring 1. A second convex edge 21 is extendedly provided on the outer peripheral wall of the outer ring 2 corresponding to the upper end position of the first convex edge 11. A sealing space 3 for forming a seal with an external device is formed between the first convex edge 11 and the second convex edge 21. A first blind hole 22 is provided on the second convex edge 21. A perforation and a double-headed screw are provided at the lower end of the first convex edge 11 corresponding to the first blind hole 22. The perforation and the double-headed screw are hermetically connected. A sealing member is provided between the perforation and the double-headed screw. This design allows the double-headed screw to pass through the perforation for adjustment and fixation while maintaining the sealing performance of the entire structure. The presence of the sealing member ensures that no leakage occurs during the adjustment and fixation process. This structure can not only form a stable sealing space 3 in combination, but also, through the cooperation of the double-headed screw and the perforation, make the adjustment accuracy of the device higher, and at the same time ensure the sealing reliability during the adjustment process, improving the use flexibility and sealing performance of the device; The sealing member includes a first sealing gasket 13 provided on the upper end surface of the first convex edge 11 and a sealing groove 14 circumferentially provided around the first sealing gasket 13. A second sealing gasket 15 is embedded in the sealing groove 14. The double-headed screw can cooperate with the first sealing gasket 13 and the second sealing gasket 15 to form a seal. By providing the sealing groove 14, it is not easy for the second sealing gasket 15 to come out of the sealing groove 14, improving the connection stability. By providing the double-headed screw and the first sealing gasket 13 and the second sealing gasket 15 to form a seal, the sealing effect can be better, with multiple seals for waterproof and dustproof, and it is not easy for external dust to enter the bearing interior, improving the service life of the bearing; The bottom wall of the sealing groove 14 is provided with corrugated protrusions 16. The second sealing gasket 15 is an elastic sealing gasket. The design of the bottom wall of the sealing groove 14 with corrugated protrusions 16 can increase the sealing contact area, improve the sealing effect, and the corrugated protrusions 16 can better adapt to the slight unevenness between the sealing gasket and the sealing surface, thereby improving the sealing reliability, and the corrugated protrusions 16 are not easy to cause the second sealing gasket 15 to move, improving the connection stability; The first sealing gasket 13 is adhesively provided on the upper end surface of the first convex edge 11. The first sealing gasket 13 is tightly combined with the upper end surface of the first convex edge 11 by adhesive bonding. This design not only improves the sealing performance but also enhances the structural stability. By adhesive fixation, the displacement and wear of the sealing gasket during operation can be reduced, thereby extending the service life of the device, and it is also convenient for installation and maintenance; The second convex edge 21 is further provided with a second blind hole 23. The inner diameter of the first blind hole 22 is larger than the inner diameter of the second blind hole 23. The blind hole structure makes it impossible for the bearing to have a perforation, so that a seal can be formed between one side of the blind hole and the bearing, and different-sized blind holes can be suitable for different fixing components, improving the installation accuracy and also improving the sealing performance of the bearing;A third gasket 121 is circumferentially arranged at the position between the first gasket 13 and the second gasket 15 corresponding to the double-headed screw. The first gasket 13, the second gasket 15 and the third gasket 121 are arranged in a misaligned sealing manner. For the double-headed screw structure with misaligned sealing, by circumferentially arranging the third gasket 121 between the first gasket 13 and the second gasket 15, a misaligned configuration of triple gaskets is achieved. This design improves the sealing performance, effectively prevents the intrusion of most moisture and impurities, thereby prolonging the service life of the hub bearing and improving its reliability. At the same time, the misaligned setting enhances the interaction between the gaskets, making the overall structure more stable and reducing the risk of bearing damage caused by poor sealing. When implementing this solution, blind holes and double-headed bolts 12 are used to fix the bearing. Existing blind holes are generally non-penetrating holes, and the bottom of the blind hole is in a closed state. The position of the blind hole of the hub bearing in this solution corresponds to the position of the fixing hole of the double-headed bolt 12, and after being fixed by the double-headed bolt 12, a sealed chamber can be formed between the two in cooperation with external equipment. The installation method of the double-headed bolt 12 is the same as that of a general double-headed bolt 12, but a third gasket 121 is provided on the double-headed bolt 12 in this solution. After the double-headed bolt 12 is fixed, the third gasket 121 can contact and seal with the first gasket 13 and continuously tighten and press the first gasket 13 as the double-headed bolt 12 is tightened with the inner ring 1 of the bearing. Finally, until the third gasket 121 of the double-headed bolt 12 is located between the first gasket 13 and the second gasket 15 and forms an intersection. At this time, the second gasket 15 can contact and seal with the double-headed bolt 12, and the first gasket 13, the second gasket 15 and the third gasket 121 are in the same plane. When the second gasket 15 is installed in the sealing groove 14, those skilled in the art can press the second gasket 15 to make it deformed under pressure and form a mating snap connection with the corrugated protrusion 16 at the bottom of the sealing groove 14. The first gasket 13 is not easy to move. When external water enters the bearing, it needs to pass through the first gasket 13, the second gasket 15 and the third gasket 121 before it can enter the bearing interior. The multiple sealing structures make the sealing effect better. The gaskets used in this solution are all sealing thin gaskets and have elasticity, and can be deformed under pressure.;

[0019] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A hub bearing with a sealing structure, comprising an inner ring and an outer ring, characterized in that: A first convex edge is extendedly provided on the outer peripheral wall of the inner ring. A second convex edge is extendedly provided at the position corresponding to the upper end of the first convex edge on the outer peripheral wall of the outer ring. A sealing space for forming a seal with an external device is formed between the first convex edge and the second convex edge. A first blind hole is provided on the second convex edge. A perforation and a double-headed screw are provided at the position corresponding to the lower end of the first blind hole on the first convex edge. The perforation and the double-headed screw are hermetically connected, and a seal is provided between the perforation and the double-headed screw.

2. The hub bearing with a sealing structure according to claim 1, characterized in that: The seal includes a first gasket provided on the upper end face of the first convex edge and a sealing groove circumferentially provided on the periphery of the first gasket. A second gasket is embedded in the sealing groove. The double-headed screw can cooperate with the first gasket and the second gasket to form a seal.

3. The hub bearing with a sealing structure according to claim 2, characterized in that: The bottom wall of the sealing groove is provided with corrugated protrusions, and the second gasket is an elastic gasket.

4. The hub bearing with a sealing structure according to claim 2, characterized in that: The first gasket is adhesively provided on the upper end face of the first convex edge.

5. A hub bearing with a sealing structure according to claim 1, characterized in that: The second convex edge is further provided with a second blind hole, and the inner diameter of the first blind hole is larger than the inner diameter of the second blind hole.

6. A hub bearing with a sealing structure according to claim 2, characterized in that: A third gasket is circumferentially provided at the position between the double-headed screw corresponding to the first gasket and the second gasket. The first gasket, the second gasket, and the third gasket are arranged in a staggered seal.

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