Inner ring structure of wheel hub bearing

Abstract

This utility model discloses an inner ring structure for a wheel hub bearing, relating to the field of bearing technology. The key technical points are: it includes an inner ring body with an inner flange. Several fasteners are evenly arranged along the circumference of the inner flange, each fastener including a nut and a threaded rod. Several through holes for the threaded rod to pass through are evenly opened along the circumference of the inner flange. The threaded rod includes a fixed screw fixedly connected to the nut, and a movable screw on the fixed screw, which can move along the cross-sectional diameter of the fixed screw. The inner ring structure of this wheel hub bearing, by pushing the movable screw to misalign with the fixed screw, causes the entire threaded rod to deform, preventing it from passing through the through holes. This ensures that the fasteners remain connected to the inner flange and cannot fall off. Therefore, when the bearing is connected to the drive shaft, all fasteners do not need to be re-drilled, and the use of plastic material provides good durability.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to the inner ring structure of a wheel hub bearing. Background Technology

[0002] Automotive wheel hub bearings are one of the key components of a car. Their main function is to bear weight and provide precise guidance for the rotation of the wheel hub, which requires them to withstand not only axial loads but also radial loads.

[0003] Currently, wheel hub bearings mainly consist of an outer ring and an inner ring. The inner ring has an inner flange, which is used to connect to the drive shaft. To ensure a secure connection, multiple through holes are usually made on the inner flange, and threaded holes are made on the drive shaft. Bolts are passed through the through holes and threaded into the threaded holes to complete the fastening connection. However, since the bolts and the inner flange are separate, the bolts need to be accurately passed through the through holes during connection, which is quite troublesome, time-consuming, and labor-intensive due to the large number of bolts used. Utility Model Content

[0004] The purpose of this utility model is to provide an inner ring structure for a wheel hub bearing in order to solve the above-mentioned problems.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: An inner ring structure for a wheel hub bearing includes an inner ring body. An inner flange is provided on the inner ring body. Several fasteners are evenly arranged along the circumferential direction on the inner flange. Each fastener includes a nut and a threaded rod. Several through holes for the threaded rod to pass through are evenly opened along the circumferential direction on the inner flange. The threaded rod includes a fixed screw fixedly connected to the nut. A movable screw is provided on the fixed screw. The movable screw can move along the cross-sectional diameter direction of the fixed screw. A sliding groove is opened along the cross-sectional diameter direction on the side of the fixed screw facing away from the nut. A limiting groove is opened at the bottom of the sliding groove. The width of the limiting groove is greater than the sliding groove. A sliding pin is provided on the movable screw and slidably connected inside the sliding groove. A limiting piece is provided on the sliding pin and slidably connected inside the limiting groove. The cross-sectional diameter of the limiting piece is greater than that of the sliding pin.

[0006] As a further feature of this invention, a first magnetic block and a second magnetic block are respectively provided on the inner sidewalls at both ends of the slide groove, and a magnetic sleeve for attracting the first magnetic block or the second magnetic block is provided on the sliding pin.

[0007] As a further feature of this invention, the cross-section of the magnetic sleeve is annular, and the cross-sections of the first magnetic block and the second magnetic block are arc-shaped.

[0008] As a further feature of this invention, an elastic washer is provided on the side of the nut facing the inner flange, and the elastic washer is made of rubber material.

[0009] As a further feature of this invention, a groove is provided on the side of the nut facing away from the elastic washer.

[0010] As a further feature of this invention, both the nut and the threaded rod are made of plastic material.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention moves the movable screw along the cross-sectional diameter of the fixed screw, causing the sliding pin to slide along the groove and the limiting piece to slide along the limiting groove until the movable screw and the fixed screw are misaligned. This causes the entire threaded rod to deform and become unable to pass through the hole, thus ensuring that the fasteners remain connected to the inner flange and cannot fall off. Therefore, when connecting the bearing and the drive shaft, all fasteners do not need to be re-aligned. Simply push the movable screw back to its original position so that the movable screw and the fixed screw are on the same axis, and then screw the entire threaded rod into the threaded hole by tightening the nut. This operation is convenient, time-saving, and labor-saving. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a half-sectional view of the fastener in this utility model; Figure 3 This is a schematic diagram of the fastener in this utility model after the movable screw is removed.

[0013] Reference numerals in the attached drawings: 1. Inner ring body; 2. Inner flange; 3. Nut; 4. Perforation; 5. Fixed screw; 6. Movable screw; 7. Slide groove; 8. Limiting groove; 9. Sliding pin; 10. Limiting piece; 11. First magnetic block; 12. Second magnetic block; 13. Magnetic sleeve; 14. Elastic washer; 15. Groove. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-3As shown, the inner ring structure of the wheel hub bearing includes an inner ring body 1, an inner flange 2 on the inner ring body 1, and several fasteners evenly arranged along the circumferential direction on the inner flange 2. Each fastener includes a nut 3 and a threaded rod. Both the nut 3 and the threaded rod are made of plastic material, which is high-strength, corrosion-resistant, and durable. Several through holes 4 are evenly opened along the circumferential direction on the inner flange 2 for the threaded rod to pass through. The threaded rod includes a fixed screw 5 fixedly connected to the nut 3, and a movable screw 6 is provided on the fixed screw 5. The movable screw 6 can move along the cross-sectional diameter direction of the fixed screw 5. When the fixed screw 5 and the movable screw 6 are on the same axis, their thread combination is a continuous thread. A groove 7 is opened along the cross-sectional diameter direction on the side of the fixed screw 5 away from the nut 3, and a limiting groove 8 is opened at the bottom of the groove 7. The width of the limiting groove 8 is greater than that of the groove 7. The movable screw 6 is provided with a sliding pin 9 that is slidably connected inside the slide groove 7, and a limiting piece 10 that is slidably connected inside the limiting groove 8 is provided on the sliding pin 9. The cross-sectional diameter of the limiting piece 10 is larger than that of the sliding pin 9. By pushing the movable screw 6 to move along the cross-sectional diameter of the fixed screw 5, the sliding pin 9 slides along the slide groove 7, and the limiting piece 10 slides along the limiting groove 8 until the movable screw 6 and the fixed screw 5 are misaligned, thereby deforming the entire threaded rod and preventing it from passing through the through hole 4. This ensures that the fasteners are always connected to the inner flange 2 and cannot fall off. Therefore, when connecting the bearing and the drive shaft, all fasteners do not need to be re-aligned. Simply push the movable screw 6 to reset so that the movable screw 6 and the fixed screw 5 are on the same axis, and then screw the entire threaded rod into the threaded hole by tightening the nut 3 to achieve the connection. The operation is convenient, time-saving and labor-saving.

[0016] Please see Figure 2 , Figure 3 As shown, a first magnetic block 11 and a second magnetic block 12 are respectively provided on the inner sidewalls of both ends of the slide groove 7, and a magnetic sleeve 13 is provided on the sliding pin 9 for mutual attraction with the first magnetic block 11 or the second magnetic block 12. When the movable screw 6 is pushed to misalign with the fixed screw 5, the sliding pin 9 slides to the position of the first magnetic block 11, and the magnetic sleeve 13 can attract with the first magnetic block 11 to fix the position of the movable screw 6, so that the movable screw 6 will not be reset due to slight contact, and the fastener is maintained in the connection state on the inner flange 2. When the movable screw 6 is pushed to reset, the sliding pin 9 slides to the position of the second magnetic block 12, and the magnetic sleeve 13 can attract with the second magnetic block 12 to fix the position of the movable screw 6, thereby facilitating the screw-threaded operation. The cross-section of the magnetic sleeve 13 is annular, and the cross-sections of the first magnetic block 11 and the second magnetic block 12 are arc-shaped, so that the magnetic sleeve 13 fits well with the first magnetic block 11 and the second magnetic block 12 after mutual attraction, and is not easy to loosen.

[0017] Please see Figure 2As shown, an elastic washer 14 is provided on the side of the nut 3 facing the inner flange 2, and the elastic washer 14 is made of rubber material. After the threaded rod is threaded into the threaded hole, the elastic washer will undergo elastic deformation due to the compression of the nut 3, thereby pushing the nut 3 in the opposite direction, making the threaded connection between the threaded rod and the threaded hole more secure and less prone to shaking. A groove 15 is provided on the side of the nut 3 away from the elastic washer. By inserting a screwdriver into the groove 15 and turning it, the threaded rod can be screwed into the threaded hole, making the operation relatively easy and effortless.

[0018] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0019] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and 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. An inner ring structure of a hub bearing, comprising an inner ring body (1) provided with an inner flange (2), characterized in that: The inner flange (2) is uniformly provided with several fasteners along the circumferential direction. Each fastener includes a nut (3) and a threaded rod. The inner flange (2) is uniformly provided with several through holes (4) for the threaded rod to pass through along the circumferential direction. The threaded rod includes a fixed screw (5) fixedly connected to the nut (3). A movable screw (6) is provided on the fixed screw (5). The movable screw (6) can move along the cross-sectional diameter of the fixed screw (5). A sliding groove (7) is provided on the side of the fixed screw (5) facing away from the nut (3) along the cross-sectional diameter. A limiting groove (8) is provided at the bottom of the sliding groove (7). The groove width of the limiting groove (8) is greater than that of the sliding groove (7). A sliding pin (9) is provided on the movable screw (6) and slidably connected inside the sliding groove (7). A limiting piece (10) is provided on the sliding pin (9) and slidably connected inside the limiting groove (8). The cross-sectional diameter of the limiting piece (10) is greater than that of the sliding pin (9).

2. The inner ring structure of a hub bearing according to claim 1, characterized in that: The inner walls at both ends of the slide (7) are respectively provided with a first magnetic block (11) and a second magnetic block (12), and the sliding pin (9) is provided with a magnetic sleeve (13) for adsorbing the first magnetic block (11) or the second magnetic block (12).

3. The inner ring structure of a hub bearing according to claim 2, characterized in that: The cross-section of the magnetic sleeve (13) is annular, and the cross-sections of the first magnetic block (11) and the second magnetic block (12) are arc-shaped.

4. The inner ring structure of a hub bearing according to claim 1, characterized by: An elastic washer (14) is provided on the side of the nut (3) facing the inner flange (2), and the elastic washer (14) is made of rubber material.

5. The inner ring structure of a hub bearing according to claim 4, characterized in that: The nut (3) has a groove (15) on the side facing away from the elastic washer.

6. The inner ring structure of a hub bearing according to claim 1, characterized by: Both the nut (3) and the threaded rod are made of plastic material.

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