Bearing hub easy to disassemble

Abstract

The utility model provides a bearing hub easy to disassemble, which comprises a hub body, and the hub body is provided with a through cavity along the axis. The through cavity comprises a first installation cavity, a middle cavity and a second installation cavity. The diameter of the first installation cavity is larger than that of the middle cavity, and a bearing is installed in the first installation cavity. The second mounting cavity is connected with a roller blade, the roller blade is a hollow cylinder, and the roller blade is in spline connection with the drum body. A hollow bolt is arranged in the middle cavity, the hollow bolt is in threaded connection with the roller blade, and the roller blade and the drum body are locked through the hollow bolt. The outer wall of one end, far away from the drum body, of each roller blade is provided with an external spline; the roller blades and the drum body are connected through the splines, the hollow bolts are screwed to lock the roller blades and the drum body, looseness in the riding process is avoided, and the roller is simple in overall structure, low in machining cost and convenient to disassemble and maintain.

Description

Technical Field

[0001] The utility model belongs to the technical field of cartridge hubs, and particularly relates to a detachable cartridge hub. Background Art

[0002] A cartridge hub is a type of bicycle hub that uses industrial standard bearings instead of ball bearings as the core component. The standard bearings ensure that the cartridge hub rotates more smoothly, can provide smooth performance during high-speed operation. At the same time, the cartridge hub usually uses sealed bearings, which have the characteristics of high durability and stable performance, and are favored by bicycle enthusiasts. A roller brake is a modular brake with quiet and smooth braking and a very stable structure. The existing connection structure between the cartridge hub and the roller brake is complex, with poor maintenance convenience and high maintenance costs.

[0003] Therefore, the above problems need to be solved urgently. Summary of the Utility Model

[0004] Purpose of the utility model: In order to overcome the above deficiencies, the utility model provides a detachable cartridge hub, in which the connection stability between the roller blade and the hub body is high, it is not easy to loosen, and the maintenance is convenient.

[0005] Technical solution: In order to achieve the above purpose, the utility model provides a detachable cartridge hub, which includes a hub body. The hub body is a hollow cylinder, and a through cavity is arranged along the axis of the hub body. The through cavity includes a first installation chamber, an intermediate chamber, and a second installation chamber arranged in sequence. The diameter of the first installation chamber is larger than that of the intermediate chamber, and a bearing is installed in the first installation chamber. The second installation chamber is connected with a roller blade. The roller blade is a hollow cylinder, and the roller blade is spline-connected with the hub body. A hollow bolt is arranged in the intermediate chamber, and the hollow bolt is thread-connected with the roller blade. The hollow bolt locks the roller blade and the hub body. An external spline is arranged on the outer wall of the end of the roller blade away from the hub body, and a bearing is installed in the inner cavity of the end of the roller blade away from the hub body. When installing the utility model, first connect the roller blade and the hub body through splines, and then tighten the hollow bolt to lock the roller blade and the hub body, so as to avoid loosening during riding. The overall structure is simple, the connection is stable, the processing cost is low, the disassembly is convenient, and the maintenance is easy.

[0006] Further, in the above-mentioned detachable cartridge hub, the roller blade includes a hub body connection end and a roller brake connection end, and external splines are respectively arranged on the outer walls of the hub body connection end and the roller brake connection end.

[0007] Further, in the above-mentioned detachable cartridge hub, the roller brake connection end includes an avoidance part and a spline part. The avoidance part is arranged close to the hub body, and the spline part is arranged away from the hub body. The avoidance part forms an avoidance for the end face of the hub body, and the spline part is spline-connected with the roller brake.

[0008] Further, in the above-mentioned detachable cartridge hub, an internal thread is provided on the inner wall of one end of the roller blade close to the drum body. The second installation chamber includes an avoidance chamber and a spline chamber. The diameter of the avoidance chamber is smaller than that of the spline chamber, and the diameter of the avoidance chamber is smaller than that of the middle chamber.

[0009] Further, in the above-mentioned detachable cartridge hub, a first bearing avoidance chamber is provided between the first installation chamber and the middle chamber. The diameter of the first bearing avoidance chamber is smaller than that of the first installation chamber, and the diameter of the first bearing avoidance chamber is larger than that of the middle chamber. The bearing is installed in the first installation chamber, and the first bearing avoidance chamber forms an avoidance for the inner ring of the bearing to ensure smooth rotation of the bearing and reduce the rotational resistance of the bearing.

[0010] Further, in the above-mentioned detachable cartridge hub, a second bearing avoidance chamber is provided between the inner cavity of the drum body connection end and the inner cavity of the roller brake connection end. The diameter of the second bearing avoidance chamber is smaller than that of the inner cavity of the roller brake connection end, and the diameter of the second bearing avoidance chamber is larger than that of the inner cavity of the drum body connection end. A bearing is installed in the inner cavity of the roller brake connection end, and the second bearing avoidance chamber forms an avoidance for the inner ring of the bearing to ensure smooth rotation of the bearing and reduce the rotational resistance of the bearing.

[0011] Further, in the above-mentioned detachable cartridge hub, ear rims are respectively provided at both ends of the drum body. The ear rims are installed with spokes.

[0012] From the above technical solutions, it can be seen that the present utility model has the following beneficial effects: For the detachable cartridge hub of the present utility model, the roller blade and the drum body are connected by splines, and the hollow bolt is tightened to lock the roller blade and the drum body, avoiding loosening during riding, with stable connection, simple overall structure, low processing cost, convenient disassembly, and easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a cross-sectional view of the detachable cartridge hub of the present utility model;

[0014] Figure 2 is Figure 1 an exploded view of

[0015] Figure 3 a left side view of the roller blade.

[0016] In the figure: 1. Drum body, 11. Through cavity, 111. First installation chamber, 1111. First bearing avoidance chamber, 1112. Second bearing avoidance chamber, 112. Middle chamber, 1121. Hollow bolt, 113. Second installation chamber, 1131. Avoidance chamber, 1132. Spline chamber, 2. Roller blade, 12. Ear rim, 21. Drum body connection end, 22. Roller brake connection end, 221. Avoidance part, 222. Spline part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Embodiment 1

[0018] As shown Figures 1-3 in the figure, a detachable cartridge hub includes a drum body 1. The drum body 1 is a hollow cylinder, and the drum body 1 is provided with a through cavity 11 along the axis. The through cavity 11 includes a first installation chamber 111, an intermediate chamber 112, and a second installation chamber 113 arranged in sequence. The diameter of the first installation chamber 111 is larger than that of the intermediate chamber 112, and a bearing is installed in the first installation chamber 111. A roller blade 2 is connected to the second installation chamber 113. The roller blade 2 is a hollow cylinder, and the roller blade 2 is splined to the drum body 1. A hollow bolt 1121 is provided in the intermediate chamber 112. The hollow bolt 1121 is threadedly connected to the roller blade 2, and the hollow bolt 1121 locks the roller blade 2 and the drum body 1. An external spline is provided on the outer wall of the end of the roller blade 2 away from the drum body 1, and a bearing is installed in the inner cavity of the end of the roller blade 2 away from the drum body 1. The roller blade 2 includes a drum body connection end 21 and a roller brake connection end 22. External splines are respectively provided on the outer walls of the drum body connection end 21 and the roller brake connection end 22. The roller brake connection end 22 includes an avoidance portion 221 and a spline portion 222. The avoidance portion 221 is arranged close to the drum body 1, and the spline portion 222 is arranged away from the drum body 1. The avoidance portion 221 forms an avoidance of the end face of the drum body 1, and the spline portion 222 is splined to the roller brake. An internal thread is provided on the inner wall of the end of the roller blade 2 close to the drum body 1. The second installation chamber 113 includes an avoidance cavity 1131 and a spline cavity 1132. The diameter of the avoidance cavity 1131 is smaller than that of the spline cavity 1132, and the diameter of the avoidance cavity 1131 is smaller than that of the intermediate chamber 112. A first bearing avoidance cavity 1111 is provided between the first installation chamber 111 and the intermediate chamber 112. The diameter of the first bearing avoidance cavity 1111 is smaller than that of the first installation chamber 111, and the diameter of the first bearing avoidance cavity 1111 is larger than that of the intermediate chamber 112. The bearing is installed in the first installation chamber 111, and the first bearing avoidance cavity 1111 forms an avoidance of the inner ring of the bearing. A second bearing avoidance cavity 1112 is provided between the inner cavity of the drum body connection end 21 and the inner cavity of the roller brake connection end 22. The diameter of the second bearing avoidance cavity 1112 is smaller than the diameter of the inner cavity of the roller brake connection end 22, and the diameter of the second bearing avoidance cavity 1112 is larger than the diameter of the inner cavity of the drum body connection end 21. A bearing is installed in the inner cavity of the roller brake connection end 22, and the second bearing avoidance cavity 1112 forms an avoidance of the inner ring of the bearing. Ear edges 12 are respectively provided at both ends of the drum body 1. Spokes are installed on the ear edges 12.

[0019] The above embodiments are exemplary. The purpose is to illustrate the technical concept and characteristics of the present invention so that those skilled in this field can understand the content of the present invention and implement it accordingly. It cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. An easily detachable bearing hub, characterized in that: The drum body (1) comprises a drum body (1), the drum body (1) being a hollow cylinder, the drum body (1) being provided with a through cavity (11) along an axis thereof; the through cavity (11) comprising a first installation cavity (111), an intermediate cavity (112), and a second installation cavity (113) which are arranged in sequence; the diameter of the first installation cavity (111) is larger than the diameter of the intermediate cavity (112), and the first installation cavity (111) is provided with a bearing; the second installation cavity (113) is connected to a roller blade (2), and the roller blade (2) is provided with a roller blade (2) ...113) and the roller blade (2) is provided with a roller blade (113) and the roller blade (2) is provided with a roller blade (113) and the roller blade (2) is provided with the roller blade (113) and the roller blade (2) is provided with the roller blade (11 The roller blade (2) is a hollow cylinder, and the roller blade (2) and the drum body (1) are spline-connected; the intermediate chamber (112) is provided with a hollow bolt (1121), and the hollow bolt (1121) and the roller blade (2) are threadedly connected, and the hollow bolt (1121) locks the roller blade (2) and the drum body (1); an outer spline is provided on the outer wall of one end of the roller blade (2) away from the drum body (1), and a bearing is installed in the inner cavity of one end of the roller blade (2) away from the drum body (1).

2. The easily detachable bearing hub according to claim 1, characterized in that: The roller blade (2) comprises a drum body connecting end (21) and a roller brake connecting end (22), and the outer walls of the drum body connecting end (21) and the roller brake connecting end (22) are respectively provided with external splines.

3. The easily detachable bearing hub according to claim 2, characterized in that: The roller brake connection end (22) comprises an avoidance portion (221) and a spline portion (222); the avoidance portion (221) is arranged close to the drum body (1), and the spline portion (222) is arranged away from the drum body (1); the avoidance portion (221) avoids the end surface of the drum body (1), and the spline portion (222) is spline-connected to the roller brake.

4. The easily detachable bearing hub according to claim 1, characterized in that: An inner wall of one end of the roller blade (2) close to the drum body (1) is provided with an internal thread; the second installation chamber (113) comprises an avoidance chamber (1131) and a spline chamber (1132); the diameter of the avoidance chamber (1131) is smaller than the diameter of the spline chamber (1132); and the diameter of the avoidance chamber (1131) is smaller than the diameter of the intermediate chamber (112).

5. The easily detachable bearing hub according to claim 1, characterized in that: A first bearing avoidance cavity (1111) is provided between the first installation cavity (111) and the intermediate cavity (112); the diameter of the first bearing avoidance cavity (1111) is smaller than that of the first installation cavity (111); and the diameter of the first bearing avoidance cavity (1111) is larger than that of the intermediate cavity (112).

6. The easily detachable bearing hub according to claim 2, characterized in that: A second bearing avoidance cavity (1112) is provided between the inner cavity of the drum body connecting end (21) and the inner cavity of the roller brake connecting end (22); the diameter of the second bearing avoidance cavity (1112) is smaller than the diameter of the inner cavity of the roller brake connecting end (22); and the diameter of the second bearing avoidance cavity (1112) is larger than the diameter of the inner cavity of the drum body connecting end (21).

7. The easily detachable bearing hub according to claim 1, characterized in that: The drum body (1) is provided with ear edges (12) at both ends.

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