Automobile hub bearing

Abstract

The utility model provides an automobile hub bearing, and belongs to the technical field of automobile accessories. The problem that an existing automobile hub bearing is poor in sealing performance is solved. The automobile hub bearing comprises an inner ring and an outer ring, the outer ring movably sleeves the surface of the inner ring, the right side of the surface of the outer ring is sleeved with a sealing cover, the top and the bottom of the sealing cover are fixedly connected with positioning mechanisms in a penetrating mode, positioning grooves are formed in the right side of the top and the right side of the bottom of the surface of the outer ring, and a sealing groove is formed in the right side of the surface of the outer ring. The right side of the surface of the outer ring is sleeved with a sealing ring, a groove is formed in the inner wall of the sealing cover, an air bag is placed in an inner cavity of the groove, and the top of the air bag communicates with an air nozzle. The utility model has the advantages that the sealing performance is good, the sensor is not easy to erode by water vapor, and the sealing cover can be stably fixed due to the limit structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories, and particularly relates to an automobile wheel hub bearing. Background Art

[0002] The main function of the wheel hub bearing is to bear the load and provide precise guidance for the rotation of the wheel hub. It bears both axial loads and radial loads and is a very important component.

[0003] For example, Chinese patent literature discloses an automobile wheel hub bearing [application number: 202020424663.7; authorization announcement number: CN211693225U], which includes a bearing outer ring and a bearing inner ring, and two groups of corresponding inner retainers and outer retainers are arranged between the outer side surface of the bearing inner ring and the inner side surface of the bearing outer ring, the inner retainer is provided with an inner annular mounting groove, and the outer retainer is provided with an outer annular mounting groove, and a plurality of steel balls are arranged in the inner annular mounting groove and the outer annular mounting groove, and a limiting assembly device is arranged between the outer retainer and the bearing inner ring to prevent the steel balls in the outer annular mounting groove of the outer retainer from falling out of the outer annular mounting groove of the outer retainer.

[0004] In the above-mentioned automobile wheel hub bearing, the outer ring and the inner ring of the bearing rotate smoothly relative to each other, resulting in a stable overall structure of the wheel hub bearing. However, the sealing cover is directly mounted on the surface of the outer ring. Since there is no limiting structure between the sealing cover and the outer ring, the sealing cover is prone to fall off or loosen during long-term use, thereby causing the sensor to move, affecting the speed detection effect. At the same time, there is no sealing structure between the sealing cover and the outer ring. When driving on rainy days, rainwater can easily penetrate into the interior of the sealing cover, causing the sensor to be damaged by moisture, thereby affecting its service life. Summary of the invention

[0005] The purpose of the utility model is to address the above-mentioned problems existing in the prior art and to provide an automobile wheel hub bearing with good sealing performance, which improves the service life of the sensor and has a limiting structure, which can limit the sealing cover and prevent the sealing cover from falling off or loosening.

[0006] The purpose of the utility model can be achieved through the following technical solutions: an automobile wheel hub bearing, comprising an inner ring and an outer ring, the outer ring is movably sleeved on the surface of the inner ring, a sealing cover is sleeved on the right side of the outer ring surface, the top and bottom of the sealing cover are penetrated and fixedly connected with a positioning mechanism, the right side of the top of the outer ring surface and the right side of the bottom are both provided with a positioning groove, the right side of the outer ring surface is provided with a sealing groove, the right side of the outer ring surface is sleeved with a sealing ring, the inner wall of the sealing cover is provided with a groove, an airbag is placed in the inner cavity of the groove, and the top of the airbag is connected to an air nozzle.

[0007] The automobile wheel hub bearing is mainly provided with positioning mechanisms, positioning grooves, sealing grooves, sealing rings, grooves, airbags and air nozzles on the surfaces of the inner ring and the outer ring. The positioning mechanisms, positioning grooves, sealing grooves, sealing rings, grooves, airbags and air nozzles can enhance the sealing performance between the sealing cover and the outer ring, so that water seepage will not occur during use. At the same time, the bearing has a limiting function, which can limit and fix the sealing cover, so that the sealing cover will not fall off or loosen when the vehicle is bumped during driving, thereby ensuring that the sensor can work continuously and stably.

[0008] In the above-mentioned automobile wheel hub bearing, the positioning mechanism includes a shell, the opposite side of the shell is fixedly connected with the sealing cover, the inner cavity of the shell is movably connected with a positioning plate, the opposite side of the positioning plate is riveted with a positioning rod, the opposite end of the positioning rod passes through the shell and the sealing cover in turn and extends to the inner cavity of the positioning groove, the two sides of the inner cavity of the shell are riveted with support plates, the opposite side of the support plate is riveted with a spring, the opposite end of the spring is fixedly connected with the positioning plate, the opposite side of the positioning plate is fixedly connected with a movable rod, the opposite end of the movable rod is riveted with an iron plate, and the opposite side of the shell is provided with a magnetic suction groove. In actual application, by setting the magnetic suction groove, it is convenient to place the magnet, and the iron plate begins to move under the magnetic force of the magnet, thereby releasing the limit on the sealing cover.

[0009] In the above-mentioned automobile wheel hub bearing, the sealing ring is located in the inner cavity of the sealing groove, and the outer surface of the sealing ring contacts the inner wall of the sealing cover. In practical applications, the sealing performance of the sealing cover can be increased by arranging the sealing ring.

[0010] In the above-mentioned automobile wheel hub bearing, the top of the air nozzle penetrates to the top of the sealing cover, and a pipe cap is sleeved on the top of the surface of the air nozzle. In practical applications, the air nozzle can be sealed by setting the pipe cap to avoid air leakage.

[0011] In the above-mentioned automobile wheel hub bearing, a first mounting plate is welded on the left side of the inner ring surface, and a second mounting plate is welded on the surface of the outer ring. In practical applications, by providing the first mounting plate and the second mounting plate, it is convenient for users to install and fix the automobile wheel hub bearing.

[0012] In the above-mentioned automobile wheel hub bearing, a sensor bracket is riveted to the right side of the inner cavity of the sealing cover, and a data interface is fixedly connected to the top of the right side of the sealing cover. In practical applications, by providing the sensor bracket, it is convenient for users to install and fix the sensor.

[0013] Compared with the prior art, the advantages of the automobile wheel hub bearing are as follows: good sealing performance; under the action of the airbag and the sealing ring, the sealing cover and the outer ring can be sealed to prevent water seepage; at the same time, under the action of the positioning mechanism and the positioning groove, the sealing cover can be limited and fixed to prevent loosening or falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front sectional view of the automobile wheel hub bearing.

[0015] Figure 2 This is the wheel hub bearing of this car Figure 1 A is an enlarged view of the middle image.

[0016] Figure 3 It is a front sectional view of the local structure of the automobile hub bearing.

[0017] Figure 4 It is a right side schematic diagram of the air bag structure of the automobile wheel hub bearing.

[0018] Figure 5 It is a front view schematic diagram of the automobile wheel hub bearing.

[0019] Figure 6 It is a right side schematic diagram of the automobile wheel hub bearing.

[0020] In the figure, 1. inner ring; 2. outer ring; 3. sealing cover; 4. positioning mechanism; 5. positioning groove; 6. sealing groove; 7. sealing ring; 8. groove; 9. airbag; 10. air nozzle; 11. shell; 12. positioning plate; 13. positioning rod; 14. support plate; 15. spring; 16. movable rod; 17. iron plate; 18. magnetic suction groove; 19. sensor bracket; 20. data interface. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the automobile wheel hub bearing comprises an inner ring 1 and an outer ring 2, the outer ring 2 is movably sleeved on the surface of the inner ring 1, a sealing cover 3 is sleeved on the right side of the surface of the outer ring 2, a positioning mechanism 4 is penetrated and fixedly connected to the top and bottom of the sealing cover 3, a positioning groove 5 is provided on the right side of the top and the right side of the bottom of the surface of the outer ring 2, a sealing groove 6 is provided on the right side of the surface of the outer ring 2, a sealing ring 7 is sleeved on the right side of the surface of the outer ring 2, a groove 8 is provided on the inner wall of the sealing cover 3, an airbag 9 is placed in the inner cavity of the groove 8, and an air nozzle 10 is connected to the top of the airbag 9.

[0023] To further explain, the positioning mechanism 4 includes a shell 11, and the opposite sides of the shell 11 are fixedly connected to the sealing cover 3, the inner cavity of the shell 11 is movably connected with a positioning plate 12, and the opposite side of the positioning plate 12 is riveted with a positioning rod 13, and the opposite end of the positioning rod 13 passes through the shell 11 and the sealing cover 3 in sequence and extends to the inner cavity of the positioning groove 5, and the two sides of the inner cavity of the shell 11 are riveted with support plates 14, and the opposite side of the support plate 14 is riveted with a spring 15, and the opposite end of the spring 15 is fixedly connected to the positioning plate 12, and the opposite side of the positioning plate 12 is fixedly connected with a movable rod 16, and the opposite end of the movable rod 16 is riveted with an iron plate 17, and the opposite side of the shell 11 is provided with a magnetic suction groove 18.

[0024] The sealing ring 7 is located in the inner cavity of the sealing groove 6, and the outer surface of the sealing ring 7 contacts the inner wall of the sealing cover 3; the top end of the air nozzle 10 passes through the top of the sealing cover 3, and a pipe cap is sleeved on the top of the surface of the air nozzle 10; a first mounting plate is welded on the left side of the surface of the inner ring 1, and a second mounting plate is welded on the surface of the outer ring 2; a sensor bracket 19 is riveted on the right side of the inner cavity of the sealing cover 3, and a data interface 20 is fixedly connected to the top of the right side of the sealing cover 3.

[0025] In actual manufacturing, balls and ball cages are installed on the outer raceway on the surface of the inner ring 1 and the inner raceway inner cavity of the outer ring 2. The inner ring 1 and the outer ring 2 are respectively installed and fixed by the first mounting plate and the second mounting plate. Then, the sensor is installed on the surface of the sensor bracket 19, and the sensor circuit is connected to the data interface 20. The magnet is placed in the inner cavity of the magnetic suction groove 18. Under the action of the magnet, the iron plate 17 starts to move, and the iron plate 17 drives the movable rod 16 and the positioning plate 12 to move. Then, the sealing cover 3 is put on the surface of the outer ring 2. The airbag 9 is then inflated through the air nozzle 10. The airbag 9 expands after being inflated. The inner wall of the airbag 9 is in close contact with the outer ring 2, and the outer surface of the airbag 9 is in close contact with the inside of the groove 8, thereby increasing the sealing performance of the sealing cover 3 and preventing water vapor from penetrating into the inside of the sealing cover 3. After the sealing cover 3 is installed, the magnet is removed, and the positioning plate 12 and the positioning rod 13 begin to reset under the action of the spring 15. The positioning rod 13 extends to the inner cavity of the positioning groove 5, thereby limiting and fixing the sealing cover 3 to prevent it from falling off.

[0026] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. An automobile wheel hub bearing, comprising an inner ring (1) and an outer ring (2), characterized in that: The outer ring (2) is movably sleeved on the surface of the inner ring (1); a sealing cover (3) is sleeved on the right side of the surface of the outer ring (2); a positioning mechanism (4) is penetrated and fixedly connected to the top and bottom of the sealing cover (3); a positioning groove (5) is provided on the right side of the top and the right side of the bottom of the surface of the outer ring (2); a sealing groove (6) is provided on the right side of the surface of the outer ring (2); a sealing ring (7) is sleeved on the right side of the surface of the outer ring (2); a groove (8) is provided on the inner wall of the sealing cover (3); an air bag (9) is placed in the inner cavity of the groove (8); and a gas nozzle (10) is connected to the top of the air bag (9).

2. The automobile wheel hub bearing according to claim 1, characterized in that: The positioning mechanism (4) comprises a shell (11), the opposite sides of the shell (11) are both penetrated and fixedly connected with the sealing cover (3), the inner cavity of the shell (11) is movably connected with a positioning plate (12), the opposite sides of the positioning plate (12) are riveted with a positioning rod (13), the opposite ends of the positioning rod (13) penetrate the shell (11) and the sealing cover (3) in sequence and extend to the inner cavity of the positioning groove (5), the two sides of the inner cavity of the shell (11) are riveted with support plates (14), the opposite sides of the support plates (14) are riveted with springs (15), the opposite ends of the springs (15) are both fixedly connected with the positioning plate (12), the opposite sides of the positioning plate (12) are both fixedly connected with a movable rod (16), the opposite ends of the movable rod (16) are riveted with an iron plate (17), and the opposite sides of the shell (11) are provided with a magnetic suction groove (18).

3. The automobile wheel hub bearing according to claim 1, characterized in that: The sealing ring (7) is located in the inner cavity of the sealing groove (6), and the outer surface of the sealing ring (7) is in contact with the inner wall of the sealing cover (3).

4. The automobile wheel hub bearing according to claim 1, characterized in that: The top end of the gas nozzle (10) penetrates through the top of the sealing cover (3), and a pipe cap is sleeved on the top of the surface of the gas nozzle (10).

5. The automobile wheel hub bearing according to claim 1, characterized in that: A first mounting plate is welded to the left side of the surface of the inner ring (1), and a second mounting plate is welded to the surface of the outer ring (2).

6. The automobile wheel hub bearing according to claim 1, characterized in that: A sensor bracket (19) is riveted to the right side of the inner cavity of the sealing cover (3), and a data interface (20) is fixedly connected to and penetrates the top of the right side of the sealing cover (3).

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