Bicycle drum brake hub

Abstract

The utility model relates to the technical field of bicycle hubs, in particular to a bicycle drum brake hub which comprises a shell, a connecting ring for connecting bicycle wheel spokes is fixedly installed on the outer surface of the shell, and a bearing rod for driving a bicycle wheel to rotate is rotatably installed in the shell. And mounting sleeves are mounted on the two sides of the shell, rotating assemblies for driving the bearing rods to rotate are mounted in the mounting sleeves, and gear assemblies for assisting the shell in rotating are rotationally mounted in the mounting sleeves. The bearing rod rotates in the shell by means of the rotating bearing, so that the shell rotates through the bicycle wheel connected with the connecting ring, the bearing rod rotates through the rotating bearing installed on the inner wall of the shell, and the three rotating teeth can rotate on the gear ring installed on the outer surface of the bearing rod together; and the three rotating teeth can brake the bicycle wheel more quickly through the gear ring.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle hubs, and more specifically to a bicycle drum brake hub. Background Art

[0002] As an important part of a bicycle, the functions and characteristics of the bicycle hub have a significant impact on the riding experience and the overall performance of the bicycle. The bicycle hub is the barrel that connects the spokes, usually located outside the axle of the bicycle. Its main function is to transmit the power of the bicycle to the wheel so that it can rotate, and to support and protect the spokes.

[0003] Bicycle hubs are usually composed of a shell and a bearing. The shell protects the bearing and fixes it to the wheel, while the bearing supports the wheel and provides smooth movement during riding. When the bicycle is braked with a drum brake, the friction rod connected to the handbrake rubs against the side of the shell of the hub to stop the bicycle wheel from rotating. However, the hub is connected to the shell through the bearing rod, and the braking effect cannot be transmitted in time when braking, which increases the braking distance of the bicycle. Therefore, a bicycle drum brake hub that can react quickly to brake is needed.

[0004] In view of this, the utility model provides a bicycle drum brake hub. Utility Model Content

[0005] The purpose of the utility model is to solve the above-mentioned disadvantages and provide a bicycle drum brake hub which can quickly respond to brakes.

[0006] The use of the rotating gear and the gear ring increases the stability of the bearing rod and the housing when they rotate, and the rotating gear can brake the bicycle wheel faster through the gear ring, while the bearing rod can rotate inside the housing by rotating the bearing.

[0007] Therefore, the utility model provides a bicycle drum brake hub, including a shell, a connecting ring for connecting the spokes of the bicycle wheel is fixedly installed on the outer surface of the shell, a bearing rod for driving the bicycle wheel to rotate is rotatably installed inside the shell, mounting sleeves are installed on both sides of the shell, a rotating assembly for driving the bearing rod to rotate is installed inside the mounting sleeve, the bearing rod rotates inside the shell with the help of the rotating assembly, so that the bicycle wheel connected to the shell through the connecting ring rotates, a gear assembly for assisting the rotation of the shell is rotatably installed inside the mounting sleeve, the gear assembly rotates together with the rotating assembly, and the gear assembly can make the bicycle wheel brake faster when braking.

[0008] As a further improvement of the present technical solution, the rotating assembly includes a rotating bearing rotatably mounted on the outer surface of the bearing rod. Two rotating bearings are provided, and the two rotating bearings are symmetrically mounted inside two mounting sleeves, so that the bearing rod can rotate through the rotating bearings mounted on the inner wall of the shell.

[0009] As a further improvement of the present technical solution, the gear assembly includes two connecting plates fixedly mounted on the inner wall of the mounting sleeve and an annular groove opened on the outer surface of the bearing rod, a connecting rod is mounted between the two connecting plates, a rotating tooth is rotatably mounted on the outer surface of the connecting rod, a gear ring is fixedly mounted inside the annular groove, the gear ring is meshed with the outer surface of the rotating tooth, the rotating tooth rotates together with the rotating bearing on the outer surface of the gear ring, the auxiliary housing drives the bicycle wheel to rotate, and when the bicycle wheel brakes, the rotating tooth can brake the bicycle wheel faster through the gear ring.

[0010] As a further improvement of the technical solution, three rotating teeth are provided, and the three rotating teeth are located on the outer surface of the gear ring and distributed in a circular array to assist the shell in rotating.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] In the bicycle drum brake hub, when using the bicycle, a person transmits force to the bearing rod through the pedals, so that the bearing rod rotates inside the shell by rotating the bearing, so that the bicycle wheel connected to the connecting ring on the outer surface of the shell rotates, and at the same time, the three rotating teeth can rotate together on the gear ring installed on the outer surface of the bearing rod, so that the bicycle wheel connected to the shell through the connecting ring rotates more smoothly, and when the bicycle wheel brakes, the three rotating teeth can brake the bicycle wheel more quickly through the gear ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is described in more detail below by way of example with reference to the accompanying drawings, in which:

[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the gear assembly structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the rotating assembly of the utility model.

[0017] The meaning of each number in the figure is:

[0018] 1. Shell; 11. Connecting ring;

[0019] 2. Bearing rod;

[0020] 3. Install the sleeve;

[0021] 4. Rotating assembly; 401. Rotating bearing;

[0022] 5. Gear assembly; 501. Connecting plate; 502. Connecting rod; 503. Rotating gear; 504. Gear ring. DETAILED DESCRIPTION

[0023] When the bicycle is braked by drum brake, the friction rod connected to the handbrake rubs against the side of the shell of the hub to stop the bicycle wheel from rotating. However, the hub is connected to the shell by a bearing rod. When braking, the braking effect cannot be transmitted in time, which increases the braking distance of the bicycle. Therefore, a bicycle drum brake hub that can quickly respond to braking is needed.

[0024] like Figure 1-3 As shown, the device comprises a housing 1, a connecting ring 11 for connecting the spokes of a bicycle wheel is fixedly installed on the outer surface of the housing 1, a bearing rod 2 for driving the bicycle wheel to rotate is rotatably installed inside the housing 1, mounting sleeves 3 are installed on both sides of the housing 1, a rotating assembly 4 for driving the bearing rod 2 to rotate is installed inside the mounting sleeve 3, the bearing rod 2 rotates inside the housing 1 with the help of the rotating assembly 4, so that the bicycle wheel connected to the housing 1 through the connecting ring 11 rotates, a gear assembly 5 for assisting the housing 1 to rotate is rotatably installed inside the mounting sleeve 3, the gear assembly 5 rotates together with the rotating assembly 4, and the gear assembly 5 can make the bicycle wheel brake faster when braking;

[0025] First, the specific structure of the gear assembly 5 is disclosed. The gear assembly 5 includes two connecting plates 501 fixedly mounted on the inner wall of the mounting sleeve 3 and an annular notch opened on the outer surface of the bearing rod 2. A connecting rod 502 is installed between the two connecting plates 501. A rotating tooth 503 is rotatably mounted on the outer surface of the connecting rod 502. A toothed ring 504 is fixedly mounted inside the annular notch. The toothed ring 504 meshes with the outer surface of the rotating tooth 503. The rotating tooth 503 rotates together with the rotating bearing 401 on the outer surface of the toothed ring 504. The auxiliary housing 1 drives the bicycle wheel to rotate. When the bicycle wheel brakes, the rotating tooth 503 can brake the bicycle wheel faster through the toothed ring 504. There are three rotating teeth 503, and the three rotating teeth 503 are located on the outer surface of the toothed ring 504 and are distributed in a circumferential array, and the auxiliary housing 1 rotates.

[0026] The improvement of this embodiment is that the three rotating teeth 503 are installed between the two connecting plates 501 on the inner wall of the mounting sleeve 3 through the connecting rod 502, so that the bearing rod 2 can rotate through the rotating bearing 401 installed on the inner wall of the shell 1, and the three rotating teeth 503 can rotate together on the gear ring 504 installed on the outer surface of the bearing rod 2, so that the bicycle wheel connected to the shell 1 through the connecting ring 11 can rotate more smoothly, and when the bicycle wheel brakes, the three rotating teeth 503 can brake the bicycle wheel more quickly through the gear ring 504.

[0027] Due to the problem of how the bearing rod 2 in the prior art drives the bicycle wheel to rotate, Figure 3 A second embodiment of the present utility model is shown.

[0028] The specific structure of the rotating component 4 is disclosed again. The rotating component 4 includes a rotating bearing 401 rotatably mounted on the outer surface of the bearing rod 2. Two rotating bearings 401 are provided. The two rotating bearings 401 are mounted inside the two mounting sleeves 3 and are symmetrically distributed, so that the bearing rod 2 can rotate through the rotating bearings 401 mounted on the inner wall of the shell 1.

[0029] The improvement of this embodiment lies in that the outer surfaces of two rotating bearings 401 are installed on the inner walls of the mounting sleeves 3 on both sides of the shell 1, and the bearing rod 2 is sleeved and rotatably installed inside the rotating bearing 401, so that the bearing rod 2 rotates inside the shell 1 through the rotating bearing 401, so that the bicycle wheel connected to the shell 1 rotates, thereby moving the bicycle.

[0030] In summary, the working principle of this solution is as follows:

[0031] When using the bicycle, the person transmits force to the bearing rod 2 through the pedals, so that the bearing rod 2 rotates inside the shell 1 by rotating the bearing 401, so that the bicycle wheel connected to the connecting ring 11 on the outer surface of the shell 1 rotates, and at the same time, the three rotating teeth 503 can rotate together on the gear ring 504 installed on the outer surface of the bearing rod 2, so that the bicycle wheel connected to the shell 1 through the connecting ring 11 rotates more smoothly, and when the bicycle wheel brakes, the three rotating teeth 503 can brake the bicycle wheel more quickly through the gear ring 504.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A bicycle drum brake hub, comprising a housing (1), characterized in that: A connecting ring (11) for connecting the spokes of a bicycle wheel is fixedly mounted on the outer surface of the housing (1); a bearing rod (2) for driving the bicycle wheel to rotate is rotatably mounted inside the housing (1); mounting sleeves (3) are mounted on both sides of the housing (1); a rotating assembly (4) for driving the bearing rod (2) to rotate is mounted inside the mounting sleeve (3); the bearing rod (2) rotates inside the housing (1) with the aid of the rotating assembly (4), so that the bicycle wheel connected to the housing (1) via the connecting ring (11) rotates; a gear assembly (5) for assisting the housing (1) to rotate is rotatably mounted inside the mounting sleeve (3); the gear assembly (5) rotates together with the rotating assembly (4); when braking, the gear assembly (5) can enable the bicycle wheel to brake faster.

2. The bicycle drum brake hub according to claim 1, characterized in that: The rotating assembly (4) comprises a rotating bearing (401) rotatably mounted on the outer surface of the bearing rod (2), two rotating bearings (401) are provided, and the two rotating bearings (401) are mounted inside two mounting sleeves (3) and are symmetrically distributed, so that the bearing rod (2) can be rotated by the rotating bearings (401) mounted on the inner wall of the housing (1).

3. The bicycle drum brake hub according to claim 2, characterized in that: The gear assembly (5) comprises two connecting plates (501) fixedly mounted on the inner wall of the mounting sleeve (3) and an annular notch formed on the outer surface of the bearing rod (2); a connecting rod (502) is mounted between the two connecting plates (501); a rotating tooth (503) is rotatably mounted on the outer surface of the connecting rod (502); a toothed ring (504) is fixedly mounted inside the annular notch; the toothed ring (504) is meshed with the outer surface of the rotating tooth (503); the rotating tooth (503) rotates together with the rotating bearing (401) on the outer surface of the toothed ring (504); the auxiliary housing (1) drives the bicycle wheel to rotate; when the bicycle wheel is braked, the rotating tooth (503) can brake the bicycle wheel more quickly through the toothed ring (504).

4. The bicycle drum brake hub according to claim 3, characterized in that: Three rotating teeth (503) are provided, and the three rotating teeth (503) are located on the outer surface of the gear ring (504) and distributed in a circular array to assist the housing (1) in rotating.

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