Reverse brake type inner support structure
By using deep groove ball bearings and limit rings in the inverted brake hub, the problem of loose bead bearings being easily moved is solved, and more stable and smooth rotation support is achieved, improving the safety and comfort of riding.
Patent Information
- Application Number
- CN202422695579.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-05
AI Technical Summary
In the existing inverted braking drum, long-term use of loose bead bearings can easily cause abnormal movement of the ball position, resulting in abnormal noise and falling off, affecting riding safety and comfort.
Deep groove ball bearings are used instead of loose bead bearings, and limit rings and anti-disassembly parts are added to stabilize the bearing position and ensure the stability and reliability of the bearings.
It improves the stability of the rotation support of the flywheel seat, reduces abnormal noise, and enhances the safety and comfort of riding.
Smart Images
Figure CN223252671U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of coaster brakes, and in particular to a coaster brake type inner support structure. Background Art
[0002] The hub, commonly known as the "hub barrel," is the barrel outside the axle that connects to the spokes and is also commonly called the axle skin. Hubs are divided into standard hubs and coaster hubs. Coaster hubs combine the hub and brake in one. When riding, pedaling forward propels the bike forward, while remaining motionless allows the bike to coast like a regular bike. When pedaling backward, the screw on the flywheel seat drives the brake pads out, applying the brake force.
[0003] The existing coaster brake hub includes a spindle, a brake cone fixedly mounted coaxially on one end of the spindle, a flywheel seat coaxially mounted on the other end of the spindle, a drum coaxially mounted on the brake cone and flywheel seat, and a stop block built into the drum. The stop block is threaded onto a screw on the flywheel seat and can slide axially. The existing technology uses loose ball bearings to provide rotational support for the flywheel seat. The continuous force applied to loose ball bearings over long periods of use can cause the balls to shift, resulting in abnormal noise or even ball dislodgement, affecting riding safety and comfort. Therefore, further improvements are needed. Utility Model Content
[0004] In order to improve the rotation support stability of the flywheel seat, the present application provides a coaster brake type internal support structure.
[0005] The present application provides a coaster brake internal support structure that adopts the following technical solutions:
[0006] A coaster brake type internal support structure includes a core shaft and a flywheel seat coaxially rotatably sleeved on one end of the core shaft. The outer end surface of the flywheel seat is coaxially opened with a first bearing hole, and the flywheel seat is provided with a first deep groove ball bearing built into the first bearing hole and sleeved on the core shaft.
[0007] By adopting the above technical solution, a first deep groove ball bearing is used between the flywheel seat and the core shaft. The deep groove ball bearing has the characteristics of strong load-bearing capacity, better sealing, and smoother rotation, thereby improving the rotation support stability of the flywheel seat.
[0008] Preferably, the end of the core shaft is detachably connected to a first anti-slip component, and the first anti-slip component abuts against the outer end surface of the first deep groove ball bearing.
[0009] By adopting the above technical solution, the first anti-slip component is detachably connected to the end of the core shaft, and the first anti-slip component can abut against the outer end face of the first deep groove ball bearing, ensuring that the first deep groove ball bearing will not undergo axial displacement during use, thereby improving the stability and reliability of the structure.
[0010] Preferably, the end of the core shaft has a first threaded section, the first anti-slip component is a first anti-slip nut threadedly sleeved on the first threaded section, and the end face of the first anti-slip nut abuts against the outer end face of the first deep groove ball bearing.
[0011] By adopting the above technical solution, the first anti-slip nut is screwed on so that the end face of the first anti-slip nut abuts against the outer end face of the first deep groove ball bearing, ensuring that the first deep groove ball bearing will not undergo axial displacement during use, thereby improving the stability and reliability of the structure.
[0012] Preferably, it also includes a brake cone coaxially fixedly sleeved on the other end of the core shaft and a drum rotatably sleeved on the brake cone and the flywheel seat, one end of the drum is coaxially opened with a second bearing hole, and the drum is provided with a second deep groove ball bearing built into the second bearing hole and sleeved on the flywheel seat.
[0013] By adopting the above technical solution, a second deep groove ball bearing is provided between the drum and the flywheel seat, thereby improving the overall structural stability and rotation smoothness of the hub.
[0014] Preferably, the flywheel seat is coaxially fixedly connected with a first limiting ring that abuts against the outer end surface of the second deep groove ball bearing.
[0015] By adopting the above technical solution and adding a first limiting ring, the second deep groove ball bearing can be effectively prevented from moving in the axial direction, thereby ensuring that the bearing is firmly positioned and improving the stability of the overall structure.
[0016] Preferably, a third bearing hole is coaxially opened at the other end of the drum, and the drum is provided with a third deep groove ball bearing built into the third bearing hole and sleeved on the brake cone.
[0017] By adopting the above technical solution, a third deep groove ball bearing is provided between the drum and the brake cone, thereby improving the overall structural stability and rotation smoothness of the hub.
[0018] Preferably, the brake cone is coaxially fixedly connected to a second limiting ring that abuts against the outer end surface of the third deep groove ball bearing.
[0019] By adopting the above technical solution and adding a second limiting ring, the third deep groove ball bearing can be effectively prevented from moving in the axial direction, ensuring that the bearing is firmly positioned and improving the stability of the overall structure.
[0020] Preferably, the end of the core shaft is detachably connected to a second anti-slip component, and the second anti-slip component abuts against the outer end surface of the brake cone.
[0021] By adopting the above technical solution, the end of the core shaft abuts against the outer end surface of the brake cone through the detachably connected second anti-slip member, so that the brake cone is fixed more firmly and prevented from loosening or falling off during use.
[0022] Preferably, the other end of the core shaft has a second threaded section, the second anti-slip component is a second anti-slip nut threadedly sleeved on the second threaded section, and the end face of the second anti-slip nut abuts against the outer end face of the brake cone.
[0023] By adopting the above technical solution, the end face of the second anti-slip nut abuts against the outer end face of the brake cone, thereby achieving reliable fixation of the brake cone, preventing loosening, and improving structural stability.
[0024] In summary, the present invention has the following beneficial effects:
[0025] 1. The first deep groove ball bearing is used between the flywheel seat and the core shaft. The deep groove ball bearing has the characteristics of strong load-bearing capacity, better sealing, and smoother rotation, which improves the rotation support stability of the flywheel seat;
[0026] 2. A second deep groove ball bearing is installed between the drum and the flywheel seat, which improves the overall structural stability and rotation smoothness of the hub;
[0027] 3. A third deep groove ball bearing is installed between the drum and the brake cone, which improves the overall structural stability and rotation smoothness of the hub. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a three-dimensional structural diagram of a coaster brake type inner support structure;
[0029] Figure 2 It is a cross-sectional structural diagram of a coaster brake type inner support structure;
[0030] Figure 3 It is a schematic diagram of the connection structure between the fixed arm and the brake cone.
[0031] In the figure, 1. core shaft; 11. first anti-slip nut; 12. second anti-slip nut; 13. gasket; 2. flywheel seat; 21. first bearing hole; 22. first deep groove ball bearing; 23. first limiting ring; 24. flywheel body; 3. brake cone; 31. second limiting ring; 32. stop ring; 33. fixed arm; 4. drum; 41. second bearing hole; 42. second deep groove ball bearing; 43. third bearing hole; 44. third deep groove ball bearing. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-3 This application is described in further detail.
[0033] The embodiment of the present application discloses a coaster brake type inner support structure, referring to Figure 1 、 Figure 2It includes a core shaft 1, a flywheel seat 2 coaxially rotatably sleeved on one end of the core shaft 1, a brake cone 3 coaxially fixedly sleeved on the other end of the core shaft 1, and a drum 4 rotatably sleeved on the brake cone 3 and the flywheel seat 2.
[0034] A first bearing hole 21 is coaxially defined on the end face of the flywheel seat 2, distal from the brake cone 3. This first bearing hole 21 communicates with the inner bore of the flywheel seat 2. The flywheel seat 2 is equipped with a first deep groove ball bearing 22, the inner ring of which is sleeved onto the spindle 1, while the outer ring of which is embedded in the first bearing hole 21. A first anti-slip feature is detachably connected to the end of the spindle 1. Specifically, the end of the spindle 1 has a first threaded section. The first anti-slip feature is a first anti-slip nut 11 threadedly sleeved onto the first threaded section. The end face of the first anti-slip nut 11 abuts against the outer end face of the first deep groove ball bearing 22.
[0035] A second bearing hole 41 is coaxially defined at one end of the drum 4 and communicates with the inner bore of the drum 4. A second deep groove ball bearing 42 is mounted on the drum 4. The inner ring of the second deep groove ball bearing 42 is sleeved onto the flywheel seat 2, while the outer ring of the second deep groove ball bearing 42 is inserted into the second bearing hole 41. A first retaining ring 23 is coaxially fixedly connected to the flywheel seat 2 and abuts the outer end surface of the second deep groove ball bearing 42. The first retaining ring 23 is integrally formed with the flywheel seat 2 and inserted into the second bearing hole 41. The flywheel body 24 is coaxially and fixedly mounted on the outer circumferential wall of the first retaining ring 23.
[0036] Reference Figure 2 、 Figure 3 A third bearing hole 43 is coaxially defined at the other end of the drum 4, and the third bearing hole 43 is connected to the inner hole of the drum 4. The drum 4 is provided with a third deep groove ball bearing 44, the inner ring of which is sleeved on the brake cone 3, and the outer ring of which is embedded in the third bearing hole 43. A second retaining ring 31 is coaxially fixedly connected to the brake cone 3, which abuts the outer end face of the third deep groove ball bearing 44. The second retaining ring 31 and the brake cone 3 are integrally formed. In this embodiment, a retaining ring 32 is fixedly connected to the outer end face of the brake cone 3. The outer cross-sectional profile of the retaining ring 32 is waist-shaped. The retaining ring 32 is sleeved on the core shaft 1 and is provided with a fixed arm 33. The fixed arm 33 is used to be mounted and fixed to the bicycle frame.
[0037] A second anti-slip feature is detachably connected to the end of the mandrel 1. Specifically, the other end of the mandrel 1 has a second threaded section. The second anti-slip feature is a second anti-slip nut 12 threadedly sleeved on the second threaded section. The end face of the second anti-slip nut 12 abuts the outer end face of the fixed arm 33. Furthermore, a gasket 13 is sleeved on the mandrel 1 and positioned between the second anti-slip nut 12 and the fixed arm 33.
[0038] The implementation principle of a coaster brake type internal support structure in an embodiment of the present application is as follows: a first deep groove ball bearing 22 is used between the flywheel seat 2 and the core shaft 1, a second deep groove ball bearing 42 is arranged between the drum 4 and the flywheel seat 2, and a third deep groove ball bearing 44 is arranged between the drum 4 and the brake cone 3, which effectively improves the overall structural stability and rotation smoothness of the hub.
[0039] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A coaster brake internal support structure, characterized in that: The invention comprises a core shaft (1) and a flywheel seat (2) coaxially rotatably sleeved on one end of the core shaft (1), wherein the outer end surface of the flywheel seat (2) is coaxially provided with a first bearing hole (21), and the flywheel seat (2) is provided with a first deep groove ball bearing (22) built into the first bearing hole (21) and sleeved on the core shaft (1).
2. The coaster brake inner support structure according to claim 1, characterized in that: The end of the core shaft (1) is detachably connected to a first anti-slip piece, and the first anti-slip piece abuts against the outer end surface of the first deep groove ball bearing (22).
3. The coaster brake inner support structure according to claim 2, characterized in that: The end of the core shaft (1) has a first threaded section, the first anti-slipping member is a first anti-slipping nut (11) threadedly sleeved on the first threaded section, and the end face of the first anti-slipping nut (11) abuts against the outer end face of the first deep groove ball bearing (22).
4. The coaster brake inner support structure according to claim 1, characterized in that: The invention also includes a brake cone (3) fixedly mounted coaxially on the other end of the core shaft (1) and a drum (4) rotatably mounted on the brake cone (3) and the flywheel seat (2), wherein one end of the drum (4) is coaxially provided with a second bearing hole (41), and the drum (4) is provided with a second deep groove ball bearing (42) built into the second bearing hole (41) and mounted on the flywheel seat (2).
5. The coaster brake inner support structure according to claim 4, characterized in that: The flywheel seat (2) is coaxially fixedly connected to a first limiting ring (23) that abuts against the outer end surface of the second deep groove ball bearing (42).
6. The coaster brake inner support structure according to claim 4, characterized in that: A third bearing hole (43) is coaxially opened at the other end of the drum (4), and the drum (4) is provided with a third deep groove ball bearing (44) built into the third bearing hole (43) and sleeved on the brake cone (3).
7. The coaster brake inner support structure according to claim 6, characterized in that: The brake cone (3) is coaxially fixedly connected to a second limiting ring (31) that abuts against the outer end surface of the third deep groove ball bearing (44).
8. The coaster brake inner support structure according to claim 7, characterized in that: The end of the core shaft (1) is detachably connected to a second anti-slip piece, and the second anti-slip piece abuts against the outer end surface of the brake cone (3).
9. The coaster brake inner support structure according to claim 8, characterized in that: The other end of the core shaft (1) has a second threaded section, and the second anti-slipping member is a second anti-slipping nut (12) threadedly sleeved on the second threaded section, and the end face of the second anti-slipping nut (12) abuts against the outer end face of the brake cone (3).