Rear hub unit of split type outer flange structure

Abstract

The utility model relates to the field of hubs, in particular to a rear hub unit of a split type outer flange structure, which comprises a hub shaft head and a fixing sleeve, a connecting flange is arranged between the hub shaft head and the fixing sleeve, a first mounting cavity is arranged on the connecting flange, one end of the connecting flange is inserted into the hub shaft head through the first mounting cavity, and the other end of the connecting flange is inserted into the fixing sleeve. The connecting flange is provided with a first fixing assembly used for fixing the hub shaft head and the connecting flange, and the other end of the connecting flange is fixedly connected with mounting screws arranged in a circumferential array. The hub unit of the split type outer flange structure is formed by the hub shaft head, the connecting flange and the fixing sleeve, the disc-shaped brake part and the hub unit are detachably connected, compared with a traditional integrated design, the whole hub unit does not need to be detached when the brake disc is maintained or replaced, only the fixing sleeve needs to be detached, and the maintenance cost is reduced. The dismounting process is obviously simplified, and the maintenance time and cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub technology, specifically to a rear wheel hub unit with a split outer flange structure. Background Technology

[0002] The wheel hub unit is one of the most critical components among the many parts of a car. Its main function is to bear the weight and provide precise guidance for the rotation of the wheel hub. This requires it to be able to withstand not only axial loads but also radial loads. The wheel hub unit bears the weight of the car through the outer ring and flange, and provides precise guidance for the rotation of the wheel hub through the rolling elements between the outer and inner rings.

[0003] Chinese patent CN222046460U discloses a hub brake disc in which the hub and brake disc are integrated through a connecting wall. This solves the technical problem in the prior art where the hub and brake disc are fastened together by bolts and the assembly position requires high precision in terms of form and position tolerances. This can effectively reduce manufacturing and assembly costs.

[0004] The above solution integrates the wheel hub and brake disc into a single design via a connecting arm. However, since the brake disc is a wear part, it needs to be repaired and replaced after a long period of use. When repairing the brake disc, the wheel hub unit needs to be removed from the axle, and then the brake disc needs to be removed. The disassembly process is complicated and time-consuming.

[0005] Therefore, this utility model provides a rear wheel hub unit with a split external flange structure to solve the above problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the prior art, this utility model provides a rear wheel hub unit with a split external flange structure to solve the problem that the brake disc is a wear part that needs to be repaired and replaced after a long period of use. However, when repairing the brake disc, the wheel hub unit needs to be removed from the axle and then the brake disc needs to be removed, which is a complicated and time-consuming process.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A rear wheel hub unit with a split external flange structure includes a wheel hub axle head and a fixing sleeve. A connecting flange is provided between the wheel hub axle head and the fixing sleeve. A first mounting cavity is provided on the connecting flange, and one end of the connecting flange is inserted into the wheel hub axle head through the first mounting cavity. A first fixing component is provided on the connecting flange for fixing the wheel hub axle head and the connecting flange.

[0009] The other end of the connecting flange is fixedly connected to a mounting screw arranged in a circumferential array. The fixing sleeve has a positioning hole that matches the mounting screw. The fixing sleeve also has a second mounting cavity, and the fixing sleeve is inserted into the connecting flange through the second mounting cavity. The fixing sleeve is provided with a second fixing component for connecting the connecting flange and the fixing sleeve. The fixing sleeve is also provided with a disc brake.

[0010] Preferably, the first fixing component includes a first screw fixedly connected to the hub axle head, the connecting flange having an annular groove, the end of the first screw away from the hub axle head passing through the connecting flange and threadedly connected to a first nut, and the first nut being located within the annular groove.

[0011] Preferably, the second fixing component includes a limiting block fixedly connected to the connecting flange, and the inner wall of the second mounting cavity is provided with a limiting groove that matches the limiting block.

[0012] Preferably, the limiting block is polygonal.

[0013] Preferably, a second screw is fixedly connected to the limiting block, and a through hole and an adjustment groove are provided on the connecting flange. The adjustment groove is connected to the second mounting cavity through the through hole. One end of the second screw passes through the through hole and is threadedly connected to a second nut, and the second nut is located in the adjustment groove.

[0014] Preferably, the disc brake includes two annular components fixedly connected to the fixed sleeve, a connecting block is provided between the two annular components, and the two ends of the connecting block are respectively fixedly connected to the two annular components.

[0015] Preferably, both of the annular components are provided with heat dissipation holes.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. The hub unit, which is formed by the hub axle head, connecting flange and fixing sleeve, is a split external flange structure. This allows the disc brake to be detachably connected to the hub unit. Compared with the traditional integrated design, when repairing or replacing the brake disc, it is not necessary to disassemble the entire hub unit. Only the fixing sleeve needs to be disassembled, which significantly simplifies the disassembly process and reduces maintenance time and cost.

[0018] 2. The combination of the first and second fixing components ensures the firmness of the connection between the hub shaft, the connecting flange and the fixing sleeve. The cooperation between the limiting block and the limiting groove not only achieves synchronous rotation, but also shares the force of the mounting screw, avoids stress concentration and extends the service life of the components. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention.

[0020] Figure 2 This is a cross-sectional view of the present invention.

[0021] Figure 3 This is a schematic diagram of the fixed sleeve and connecting flange in the uninstalled state of this utility model. Figure 1 .

[0022] Figure 4 This is a schematic diagram of the fixed sleeve and connecting flange in the uninstalled state of this utility model. Figure 2 .

[0023] In the diagram: 1. Hub shaft head; 2. Connecting flange; 3. First mounting cavity; 4. Annular groove; 5. First screw; 6. First nut; 7. Limiting block; 8. Second screw; 9. Fixing sleeve; 10. Second mounting cavity; 12. Limiting groove; 13. Through hole; 14. Adjustment groove; 15. Second nut; 16. Mounting screw; 17. Positioning hole; 18. Annular part; 19. Heat dissipation hole; 20. Connecting block. Detailed Implementation

[0024] The following will refer to the attached reference. Figures 1 to 4 The various embodiments of this utility model will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this utility model and are not intended to limit the scope of protection of this utility model.

[0025] A rear wheel hub unit with a split external flange structure includes a wheel hub axle head 1 and a fixing sleeve 9. A connecting flange 2 is provided between the wheel hub axle head 1 and the fixing sleeve 9. A first mounting cavity 3 is provided on the connecting flange 2, and one end of the connecting flange 2 is inserted into the wheel hub axle head 1 through the first mounting cavity 3. The connecting flange 2 is fitted onto the wheel hub axle head 1 through the first mounting cavity 3 in a wrap-around installation method, so that the connection between the wheel hub axle head 1 and the connecting flange 2 is more secure. A first fixing component is provided on the connecting flange 2 for fixing the wheel hub axle head 1 and the connecting flange 2.

[0026] The first fixing component includes a first screw 5 fixedly connected to the hub axle head 1, an annular groove 4 is provided on the connecting flange 2, the end of the first screw 5 away from the hub axle head 1 passes through the connecting flange 2 and is threadedly connected to a first nut 6, and the first nut 6 is located in the annular groove 4.

[0027] When the connecting flange 2 is fitted onto the wheel hub head 1 through the first mounting cavity 3, the first screw 5 needs to be aligned with the through hole on the connecting flange 2. After the connecting flange 2 is installed on the wheel hub head 1, the first screw 5 passes through the through hole and is in the annular groove 4. Then, the first nut 6 is used to install on the first screw 5 to complete the connection between the wheel hub head 1 and the connecting flange 2.

[0028] In this embodiment, the other end of the connecting flange 2 is fixedly connected to a mounting screw 16 arranged in a circumferential array. The fixing sleeve 9 is provided with a positioning hole 17 that matches the mounting screw 16. The fixing sleeve 9 is also provided with a second mounting cavity 10. The fixing sleeve 9 is inserted into the connecting flange 2 through the second mounting cavity 10. The fixing sleeve 9 is provided with a second fixing component for connecting the connecting flange 2 and the fixing sleeve 9.

[0029] When installing the fixed sleeve 9, the positioning hole 17 and the mounting screw 16 need to be aligned. That is, when the fixed sleeve 9 is sleeved on the connecting flange 2 through the second mounting cavity 10, the mounting screw 16 will pass through the positioning hole 17 and extend outside the fixed sleeve 9, and the mounting screw 16 will be used to connect with the tire hub.

[0030] The second fixing component includes a limiting block 7 fixedly connected to the connecting flange 2. The inner wall of the second mounting cavity 10 is provided with a limiting groove 12 that matches the limiting block 7. The limiting block 7 is polygonal. When the fixing sleeve 9 is installed, the limiting block 7 is inserted into the limiting groove 12 so that the connecting flange 2 can drive the fixing sleeve 9 to rotate synchronously. The force borne by the mounting screw 16 when the fixing sleeve 9 rotates is shared by the contact between the side of the limiting block 7 and the side of the limiting groove 12.

[0031] In this embodiment, a second screw 8 is fixedly connected to the limiting block 7, and a through hole 13 and an adjustment groove 14 are provided on the connecting flange 2. The adjustment groove 14 is connected to the second mounting cavity 10 through the through hole 13. One end of the second screw 8 passes through the through hole 13 and is threadedly connected to a second nut 15, and the second nut 15 is located in the adjustment groove 14.

[0032] After the second screw 8 is passed through the through hole 13, the second nut 15 is installed to reinforce the connection between the fixing sleeve 9 and the connecting flange 2, so as to prevent the fixing sleeve 9 from becoming loose on the connecting flange 2.

[0033] The fixed sleeve 9 is provided with a disc brake component, which includes two annular parts 18 fixedly connected to the fixed sleeve 9. A connecting block 20 is provided between the two annular parts 18, and the two ends of the connecting block 20 are fixedly connected to the two annular parts 18 respectively. The connecting blocks 20 are arranged in a circle in the space between the two annular parts 18, that is, there is space between adjacent connecting blocks 20, which can play a role in heat dissipation of the disc brake component.

[0034] Preferably, both annular components 18 are provided with heat dissipation holes 19, through which external air is introduced between the two annular components 18 to improve the heat dissipation effect on the disc brake component.

[0035] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A split outer flange structure's rear wheel hub unit comprising a hub spindle head (1) and a fixing sleeve (9), characterized in that, A connecting flange (2) is provided between the hub axle head (1) and the fixed sleeve (9). A first mounting cavity (3) is provided on the connecting flange (2), and one end of the connecting flange (2) is inserted into the hub axle head (1) through the first mounting cavity (3). A first fixing component is provided on the connecting flange (2) for fixing the hub axle head (1) and the connecting flange (2). The other end of the connecting flange (2) is fixedly connected to a mounting screw (16) arranged in a circumferential array. The fixing sleeve (9) is provided with a positioning hole (17) that matches the mounting screw (16). The fixing sleeve (9) is also provided with a second mounting cavity (10). The fixing sleeve (9) is inserted into the connecting flange (2) through the second mounting cavity (10). The fixing sleeve (9) is provided with a second fixing component for connecting the connecting flange (2) and the fixing sleeve (9). The fixing sleeve (9) is provided with a disc brake.

2. The split outer flange structure's rear wheel hub unit according to claim 1, characterized by, The first fixing component includes a first screw (5) fixedly connected to the hub axle head (1), and an annular groove (4) is provided on the connecting flange (2). The end of the first screw (5) away from the hub axle head (1) passes through the connecting flange (2) and is threaded with a first nut (6), and the first nut (6) is located in the annular groove (4).

3. The split outer flange structure's rear wheel hub unit according to claim 1, characterized by, The second fixing component includes a limiting block (7) fixedly connected to the connecting flange (2), and the inner wall of the second mounting cavity (10) is provided with a limiting groove (12) that matches the limiting block (7).

4. The split outer flange structure's rear wheel hub unit according to claim 3, characterized by, The limiting block (7) is a polygon.

5. The split outer flange structure's rear wheel hub unit according to claim 3, characterized by, The limiting block (7) is fixedly connected to a second screw (8). The connecting flange (2) is provided with a through hole (13) and an adjustment groove (14). The adjustment groove (14) is connected to the second mounting cavity (10) through the through hole (13). One end of the second screw (8) passes through the through hole (13) and is threadedly connected to a second nut (15). The second nut (15) is located in the adjustment groove (14).

6. The split outer flange structure's rear wheel hub unit according to claim 1, characterized by, The disc brake includes two annular parts (18) fixedly connected to the fixed sleeve (9), and a connecting block (20) is provided between the two annular parts (18), with the two ends of the connecting block (20) fixedly connected to the two annular parts (18) respectively.

7. The split outer flange structure's rear wheel hub unit according to claim 6, characterized by, Both of the annular components (18) are provided with heat dissipation holes (19).

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