Low-vibration anti-locking automobile hub unit

Abstract

The utility model discloses a low-vibration anti-locking automobile hub unit which comprises a shaft sleeve, a retainer is arranged in the shaft sleeve, a guide shaft is arranged in the retainer, the two ends of the guide shaft extend out of the shaft sleeve, a rolling ball matched with the guide shaft is arranged on the inner wall of the retainer, sealing rings are arranged at the two ends of the shaft sleeve, and the sealing rings are arranged on the inner wall of the retainer. The sealing ring is connected with the shaft sleeve through a limiting assembly, an annular sealing gasket matched with the guide shaft is arranged on the inner wall of the sealing ring, a buffering gasket is arranged on the side, close to the retainer, of the sealing ring, an oil storage groove is formed in the inner wall of the shaft sleeve, and sponge is arranged in the oil storage groove. And an oil filling port matched with the sponge is formed in the outer wall of the shaft sleeve. The sealing device has the beneficial effects that when the sealing ring is abraded and needs to be replaced, the sealing ring can be rapidly disassembled, assembled and replaced by arranging the limiting assembly, external dust is prevented from entering the shaft sleeve to cause abrasion and clamping of the interior, and the safety of the sealing device is further improved.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub unit technology, specifically to a low-vibration, anti-jamming automotive wheel hub unit. Background Technology

[0002] The main function of a wheel hub bearing is to bear weight and provide precise guidance for the rotation of the wheel hub. It bears both axial and radial loads, making it a very important component. Wheel hub bearing units are developed based on standard angular contact ball bearings and tapered roller bearings. They integrate two sets of bearings into one unit, offering advantages such as good assembly performance, elimination of clearance adjustment, light weight, compact structure, large load capacity, pre-lubrication as a sealed bearing, elimination of external hub seals, and maintenance-free operation.

[0003] According to Chinese patent CN201921346125.4, an anti-jamming linear rotary bearing based on an automotive wheel hub unit is disclosed. This application features lubrication grooves on the top and bottom of the inner wall of the bushing, located on the outer surface of the cage, facilitating lubrication of the cage and steel balls, reducing wear, preventing jamming, and extending the bearing's service life. Sealing baffles are fixedly connected to both sides of the inner wall of the bushing, located on both sides of the cage, preventing the cage from directly impacting the sealing baffles during linear movement, thus preventing damage to both the sealing baffles and the cage, and improving movement stability. Existing automotive wheel hub units use sealing baffles to prevent external dust from entering the bearing. However, over time, the sealing baffles deteriorate due to friction from the guide shaft, requiring replacement. The disassembly and assembly of the sealing baffles is cumbersome, affecting replacement efficiency.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in related technologies, this utility model proposes a low-vibration anti-jamming automobile wheel hub unit to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A low-vibration, anti-jamming automotive wheel hub unit includes a bushing, a retainer within the bushing, a guide shaft extending from both ends outside the bushing, a ball bearing matching the guide shaft on the inner wall of the retainer, sealing rings at both ends of the bushing connected to the bushing via limiting components, an annular sealing gasket matching the guide shaft on the inner wall of the sealing ring, a buffer pad on the side of the sealing ring near the retainer, an oil reservoir within the inner wall of the bushing containing a sponge, an oil filling port matching the sponge on the outer wall of the bushing, and several evenly distributed oil passages on the outer wall of the retainer.

[0008] Preferably, the filler port is provided with a matching sealing plug, and a filter screen is provided in the filler port and at the bottom end of the sealing plug.

[0009] Preferably, the sealing plug is threadedly connected to the filler port.

[0010] Preferably, the limiting component includes symmetrically arranged positioning blocks on the outer wall of the sealing ring, positioning grooves matching the positioning blocks at both ends of the bushing, a sliding groove on one side of the positioning block with a matching slider in the sliding groove, a limiting rod at the top of the slider, a spring sleeved on the outer wall of the limiting rod, the slider being connected to the positioning block through the spring, the end of the limiting rod away from the slider extending outside the positioning block, and a limiting groove matching the limiting rod on the bushing.

[0011] Preferably, the slider has symmetrically arranged guide blocks on both sides, the positioning block has a guide groove that matches the guide block, and one side of the guide block has a push block that extends out of the groove.

[0012] Preferably, the positioning block has a sliding hole that matches the limiting rod.

[0013] The beneficial effects of this utility model are as follows: when the sealing ring is worn and needs to be replaced, the sealing ring can be quickly disassembled and replaced by setting a limiting component, preventing external dust from entering the bushing and causing internal wear and jamming, thus further improving its safety. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of a low-vibration anti-jamming automobile wheel hub unit according to an embodiment of the present utility model;

[0016] Figure 2 This is a cross-sectional view of a low-vibration anti-jamming automobile wheel hub unit according to an embodiment of the present utility model;

[0017] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle;

[0018] Figure 4 This is a schematic diagram of the sealing ring in a low-vibration anti-jamming automobile wheel hub unit according to an embodiment of the present utility model;

[0019] Figure 5 This is a cross-sectional view of a sealing ring in a low-vibration anti-jamming automotive wheel hub unit according to an embodiment of the present invention;

[0020] Figure 6 yes Figure 5 A magnified view of a portion of point B in the middle.

[0021] In the picture:

[0022] 1. Bushing; 2. Cage; 3. Guide shaft; 4. Ball bearing; 5. Sealing ring; 6. Annular sealing gasket; 7. Buffer pad; 8. Oil reservoir; 9. Sponge; 10. Filler port; 11. Oil passage groove; 12. Sealing plug; 13. Filter screen; 14. Positioning block; 15. Positioning groove; 16. Slide groove; 17. Slider; 18. Limiting rod; 19. Spring; 20. Guide block; 21. Guide groove; 22. Push block. Detailed Implementation

[0023] To further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention. These drawings are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0024] According to an embodiment of the present invention, a low-vibration, anti-jamming automotive wheel hub unit is provided.

[0025] Example 1;

[0026] like Figure 1-6As shown, the low-vibration anti-jamming automotive wheel hub unit according to an embodiment of the present invention includes a bushing 1, a retainer 2 in the bushing 1, a guide shaft 3 extending from both ends of the bushing 1 in the retainer 2, a ball bearing 4 matching the guide shaft 3 on the inner wall of the retainer 2, sealing rings 5 ​​at both ends of the bushing 1, the sealing rings 5 ​​being connected to the bushing 1 by a limiting component, an annular sealing gasket 6 matching the guide shaft 3 on the inner wall of the sealing rings 5, a buffer pad 7 on the side of the sealing rings 5 ​​near the retainer 2, an oil reservoir 8 on the inner wall of the bushing 1, a sponge 9 in the oil reservoir 8, an oil filling port 10 matching the sponge 9 on the outer wall of the bushing 1, and several evenly distributed oil passages 11 on the outer wall of the retainer 2.

[0027] Example 2;

[0028] like Figure 1-6 As shown, the device includes a bushing 1, a retainer 2 within the bushing 1, and a guide shaft 3 extending from both ends of the bushing 1 within the retainer 2. The inner wall of the retainer 2 has ball bearings 4 that match the guide shafts 3. The bushing 1 has sealing rings 5 ​​at both ends, which are connected to the bushing 1 via limiting components. The inner wall of the sealing rings 5 ​​has an annular sealing gasket 6 that matches the guide shafts 3. A buffer pad 7 is provided on the side of the sealing rings 5 ​​near the retainer 2. An oil reservoir 8 is formed on the inner wall of the bushing 1, containing a sponge 9. An oil filling port 10, matching the sponge 9, is formed on the outer wall of the bushing 1. The outer wall of the retainer 2 has several evenly distributed oil passages 11. A matching sealing plug 12 is provided in the oil filling port 10, and a filter screen 13 is provided at the bottom end of the sealing plug 12. The sealing plug 12 is threadedly connected to the oil filling port 10. The limiting assembly includes symmetrically arranged positioning blocks 14 on the outer wall of the sealing ring 5. Positioning grooves 15 matching the positioning blocks 14 are formed at both ends of the bushing 1. A sliding groove 16 is formed on one side of the positioning block 14, and a matching slider 17 is provided in the sliding groove 16. A limiting rod 18 is provided at the top of the slider 17, and a spring 19 is sleeved on the outer wall of the limiting rod 18. The slider 17 is connected to the positioning block 14 through the spring 19. The end of the limiting rod 18 away from the slider 17 extends outside the positioning block 14. A limiting groove matching the limiting rod 18 is formed on the bushing 1. Symmetrically arranged guide blocks 20 are formed on both sides of the slider 17. A guide groove 21 matching the guide block 20 is formed on the positioning block 14. A push block 22 extending outside the sliding groove 16 is formed on one side of the guide block 20. A sliding hole matching the limiting rod 18 is formed on the positioning block 14.

[0029] In practical applications, when lubricating oil needs to be added inside the bushing 1, the sealing plug 12 is rotated to disengage it from the filling port 10, and then the lubricating oil is poured into the oil reservoir 8 through the filling port 10. The lubricating oil in the oil reservoir 8 is absorbed by the sponge 9. When the sponge 9 lubricates the outer wall of the cage 2, the lubricating oil will enter the cage 2 through the oil passage 11 to lubricate the rolling ball 4. When the sealing ring 5 is damaged and needs to be replaced, the personnel pull the push block 22 to move the slider 17. The slider 17 moves the limit rod 18 into the slide groove 16 and disengages it from the limit groove on the bushing 1. At this time, the positioning block 14 is released, and the personnel can remove the sealing ring 5 from the bushing 1 without external tools. When the sealing ring is worn and needs to be replaced, the sealing ring can be quickly disassembled and replaced by setting the limit component, preventing external dust from entering the bushing and causing internal wear and jamming, thus further improving its safety.

[0030] In summary, with the help of the above-mentioned technical solution of this utility model, when the sealing ring is worn and needs to be replaced, the sealing ring can be quickly disassembled and replaced by setting a limiting component, preventing external dust from entering the bushing and causing internal wear and jamming, thus further improving its safety.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low vibration anti-locking automobile wheel hub unit, characterized by, The device includes a bushing (1), a retainer (2) in the bushing (1), a guide shaft (3) extending to both ends of the bushing (1) in the retainer (2), a ball bearing (4) matching the guide shaft (3) on the inner wall of the retainer (2), a sealing ring (5) at both ends of the bushing (1), the sealing ring (5) being connected to the bushing (1) by a limiting component, an annular sealing gasket (6) matching the guide shaft (3) on the inner wall of the sealing ring (5), a buffer pad (7) on the side of the sealing ring (5) near the retainer (2), an oil reservoir (8) on the inner wall of the bushing (1), a sponge (9) in the oil reservoir (8), an oil filling port (10) matching the sponge (9) on the outer wall of the bushing (1), and several evenly distributed oil passages (11) on the outer wall of the retainer (2).

2. A low vibration anti-stuck automobile hub unit according to claim 1, characterized in that, The oil filling port (10) is provided with a matching sealing plug (12), and a filter screen (13) is provided in the oil filling port (10) and at the bottom of the sealing plug (12).

3. A low vibration anti-stuck automobile hub unit according to claim 2, characterized in that, The sealing plug (12) is threadedly connected to the oil filling port (10).

4. The low vibration anti-stuck automobile hub unit according to claim 1, characterized by, The limiting assembly includes a symmetrically arranged positioning block (14) on the outer wall of the sealing ring (5), and positioning grooves (15) matching the positioning block (14) on both ends of the bushing (1). A sliding groove (16) is provided on one side of the positioning block (14), and a matching slider (17) is provided in the sliding groove (16). A limiting rod (18) is provided at the top of the slider (17), and a spring (19) is sleeved on the outer wall of the limiting rod (18). The slider (17) is connected to the positioning block (14) through the spring (19). The end of the limiting rod (18) away from the slider (17) extends to the outside of the positioning block (14), and a limiting groove matching the limiting rod (18) is provided on the bushing (1).

5. A low vibration anti-stuck automobile wheel hub unit according to claim 4, characterized in that, The slider (17) has symmetrically arranged guide blocks (20) on both sides. The positioning block (14) has a guide groove (21) that matches the guide block (20). The guide block (20) has a push block (22) extending to the outside of the slide groove (16) on one side.

6. A low vibration anti-stuck automobile wheel hub unit according to claim 4, wherein The positioning block (14) has a sliding hole that matches the limiting rod (18).

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