Simplified hub

Abstract

The utility model relates to the field of hubs, and discloses a simplified hub which comprises a hub shell, a middle pipe body is installed in the hub shell through a first bearing and a second bearing, a middle pipe fastener is installed at the end of the middle pipe body, a middle pipe sealing ring is arranged at one end of the middle pipe body, and the middle pipe sealing ring is arranged at the other end of the middle pipe body. The inner diameter and the outer diameter of the middle pipe body are smaller than those of a middle pipe in a traditional hub so as to reduce friction and improve rotation efficiency, and inner bearings are arranged on one side of the first bearing and one side of the second bearing. Abnormal sound may be caused by friction between an O-shaped ring in an existing hub and a shell, the size of a middle pipe is large, and rotation resistance is large, after improvement, the O-shaped ring is omitted, the size of the middle pipe is reduced, friction resistance is eliminated, meanwhile, the possibility of deflection of the middle pipe is reduced, the hub rotates more smoothly, and noise is lowered.

Description

Technical Field

[0001] The utility model relates to the field of flower drums, in particular to a simplified flower drum. Background Art

[0002] The flower drum is an important component of a bicycle, located at both ends of the axle. Its main function is to transmit power to make the wheel rotate. It usually consists of a housing and bearings. The housing protects the bearings and fixes them to the wheel. There are different types of flower drums, such as ball flower drums and bearing flower drums, each with its own structural and performance characteristics.

[0003] According to the Chinese patent authorization announcement: CN216507715U, a disclosed shock-absorbing flower drum belongs to the field of flower drums and includes an installation cylinder. One side of the installation cylinder is fixedly connected with a first inner disc, and the other side of the installation cylinder is fixedly connected with a second inner disc. The first inner disc and the second inner disc are respectively installed with a first outer disc and a second outer disc through shock-absorbing components. The shock-absorbing components include an L-shaped plate, a sliding hole, a nut, a support rod, a first spring, a sliding ring, and a second spring. The top side walls of the L-shaped plate are respectively welded and fixedly connected to the side walls of the first outer disc and the second outer disc. A sliding hole is opened at the bottom of the L-shaped plate, the sliding hole sleeves the top of the support rod, the bottom side wall of the support rod is threadedly connected with a nut, the bottom surface of the nut abuts against the bottom top surface of the L-shaped plate, and the side wall of the support rod is respectively sleeved with a first spring, a sliding ring, and a second spring. By respectively adding shock-absorbing components on both sides of the flower drum, the flower drum can have a shock-absorbing function. However, there are still deficiencies in the actual use of this flower drum. The existing flower drums usually include a series of structures such as a flower drum shell, a middle tube, bearings, O-rings, side covers, and sleeves. Due to the large number of spare parts and complex structure, the assembly process is cumbersome, which directly leads to an increase in the overall production cost. Especially in the middle tube part, due to the large outer diameter size of its material and low tolerance for manufacturing tolerances, problems such as unstable swinging are likely to occur during the production process. In addition, friction may occur when the O-ring interacts with the housing, and this friction has the risk of causing abnormal noises, affecting the use experience and reliability of the product. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a simplified flower drum, which solves the problem that the existing flower drum has a cumbersome assembly process due to the large number of spare parts and complex structure, which directly leads to an increase in the overall production cost.

[0005] To achieve the above object, the utility model is realized by the following technical solutions: A simplified hub includes a hub shell. Inside the hub shell, a middle tube body is installed through a first bearing and a second bearing. A middle tube fastener is installed at the end of the middle tube body. A middle tube sealing ring is arranged at one end of the middle tube body. The inner and outer diameters of the middle tube body are smaller than those of the middle tube inside the traditional hub, so as to reduce friction and improve the rotation efficiency. Inner bearings are arranged on one side of both the first bearing and the second bearing. An inner limiting ring is arranged outside the inner bearing to limit the moving range of the inner bearing and maintain the stability of the hub. Outer limiting rings are arranged outside both the first bearing and the second bearing to further limit the movement of the bearings and enhance the overall rigidity of the hub.

[0006] Preferably, bearing sealing rings are arranged on the outer surfaces of both the first bearing and the second bearing.

[0007] Preferably, a spring washer is arranged between the hub shell and the sleeve.

[0008] Preferably, an end cover washer is arranged between the hub shell and the end cover body, and the hub shell and the end cover body are connected to each other through end cover fasteners.

[0009] Preferably, a sleeve is installed at one end of the side surface of the hub shell, and a plurality of mounting holes are penetrated through the surface of the sleeve.

[0010] Preferably, mounting blocks are fixedly connected to both ends of the side surface of the hub shell, and a plurality of spoke holes are penetrated through the surface of the mounting blocks.

[0011] Preferably, cage is installed inside both the first bearing and the second bearing. The cage is used to guide and fix the rolling elements in the inner bearing and prevent them from colliding with each other or falling off.

[0012] Preferably, a configuration groove is arranged between the inner side surface of the hub shell and the middle tube body.

[0013] Beneficial effects

[0014] The utility model provides a simplified hub. Compared with the prior art, the following beneficial effects are achieved:

[0015] 1. In the utility model, by canceling the O-ring and reducing the size of the middle tube, the frictional resistance is eliminated, and smoother rotation is achieved. In the existing hub, the friction between the O-ring inside and the outer shell may cause abnormal noise, and the middle tube has a large size, resulting in a large rotational resistance. After improvement, the O-ring is canceled, the size of the middle tube is reduced, the frictional resistance is eliminated, and at the same time, the possibility of middle tube yaw is reduced, making the hub rotate more smoothly and reducing the noise.

[0016] 2. In the present utility model, by simplifying the assembly process and shortening the assembly time, a more efficient assembly process is achieved. The existing hub assembly process is cumbersome and requires the installation of multiple spare parts, such as the middle tube, bearings, side covers, O-rings, etc. The steps are cumbersome and time-consuming. After improvement, the side cover and O-ring are cancelled, simplifying the assembly process. It only needs to press in the bearings and the middle tube first, and then install the end cover, which greatly shortens the assembly time, improves the production efficiency, and reduces the labor cost. Brief Description of the Drawings

[0017] Figure 1 FIG. is a schematic perspective view of a simplified hub proposed by the present utility model;

[0018] Figure 2 FIG. is an internal sectional view of a simplified hub proposed by the present utility model;

[0019] Figure 3 FIG. is a simplified hub proposed by the present utility model Figure 2 Enlarged view of part A;

[0020] Figure 4 FIG. is a sectional view of the internal structure of a simplified hub proposed by the present utility model.

[0021] Legend Explanation:

[0022] 1. Hub shell; 2. Middle tube body; 3. First bearing; 4. End cover body; 5. Sleeve; 6. Mounting hole; 7. Second bearing; 8. Outer limiting ring; 9. Inner bearing; 10. Inner limiting ring; 11. Configuration groove; 12. Mounting block; 13. Bearing seal ring; 14. Middle tube seal ring; 15. Cage; 16. Middle tube fastener; 17. End cover fastener; 18. Spring washer; 19. Spoke hole; 20. End cover washer. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-4 , the present utility model provides two technical solutions, specifically including the following embodiments:

[0025] Embodiment 1:

[0026] A simplified hub includes a hub shell 1. Inside the hub shell 1, a middle tube body 2 is installed through a first bearing 3 and a second bearing 7. A middle tube fastener 16 is installed at the end of the middle tube body 2. A middle tube sealing ring 14 is provided at one end of the middle tube body 2. The inner and outer diameters of the middle tube body 2 are smaller than those of the middle tube inside the traditional hub, so as to reduce friction and improve the rotation efficiency. Inner bearings 9 are provided on one side of both the first bearing 3 and the second bearing 7. An inner limiting ring 10 is provided outside the inner bearing 9 to limit the movement range of the inner bearing 9 and maintain the stability of the hub. Outer limiting rings 8 are provided outside both the first bearing 3 and the second bearing 7 to further limit the movement of the bearings and enhance the overall rigidity of the hub. The middle tube body 2 is connected to the hub shell 1 through the first bearing 3 and the second bearing 7, realizing a tight fit between the middle tube body 2 and the hub shell 1, ensuring the stability and reliability of the hub. In addition, a middle tube sealing ring 14 is provided at one end of the middle tube body 2, further improving the sealing performance of the hub, reducing the leakage of grease, and thus extending the service life of the hub.

[0027] When in use, in order to install and use the simplified hub, first fixedly connect one end of the middle tube body 2 to the hub shell 1 to ensure a tight fit between the middle tube body 2 and the hub shell 1. Then, install the first bearing 3 and the second bearing 7 so that they are tightly fitted with the middle tube body 2 inside the hub shell 1. Next, install the inner bearing 9 and install the inner limiting ring 10 outside it to limit the movement range of the inner bearing 9 and maintain the stability of the hub. Then, install the outer limiting ring 8 to further limit the movement of the bearings and enhance the overall rigidity of the hub. Finally, install the middle tube sealing ring 14 to improve the sealing performance of the hub, reduce the leakage of grease, and extend the service life of the hub. Thus, the installation and use process of the simplified hub is completed.

[0028] Embodiment Two:

[0029] On the basis of Embodiment 1, bearing seals 13 are provided on the outer surfaces of the first bearing 3 and the second bearing 7. A spring washer 18 is provided between the hub shell 1 and the sleeve 5. A end cap washer 20 is provided between the hub shell 1 and the end cap body 4. The hub shell 1 and the end cap body 4 are connected to each other by end cap fasteners 17. One end of the side surface of the hub shell 1 is provided with a sleeve 5. A plurality of mounting holes 6 are penetrated through the surface of the sleeve 5. This effectively reduces the leakage of grease, improves the sealing performance of the hub, and extends the service life of the hub. At the same time, the spring washer 18 provided between the hub shell 1 and the sleeve 5 increases the anti-loosening effect of the hub and improves the safety during use. Both ends of the side surface of the hub shell 1 are fixedly connected with mounting blocks 12. A plurality of spoke holes 19 are penetrated through the surface of the mounting blocks 12. Cage 15 are installed inside both the first bearing 3 and the second bearing 7. The cage 15 is used to guide and fix the rolling elements in the inner bearing 9 and prevent them from colliding with each other or falling off. A configuration groove 11 is provided between the inner side surface of the hub shell 1 and the middle tube body 2. The configuration groove 11 is used to accommodate and position the middle tube body 2 and ensure the relative position between the middle tube body 2 and the hub shell 1 to guide the movement of the rolling elements, facilitate the fixing of the spokes, and ensure the balance and stability of the wheel. At the same time, the configuration groove 11 between the inner side surface of the hub shell 1 and the middle tube body 2 ensures the relative position between the middle tube body 2 and the hub shell 1, guides the movement of the rolling elements, and improves the overall performance and durability of the hub.

[0030] Install the middle tube seal 14 to improve the sealing performance of the hub, reduce the leakage of grease, and extend the service life of the hub. At the same time, install the spring washer 18 to increase the anti-loosening effect of the hub and improve the safety during use. Then, install the end cap body 4 and connect it to the hub shell 1 by the end cap fasteners 17. Next, install the end cap washer 20 to ensure the sealing performance between the end cap body 4 and the hub shell 1. Finally, install the spokes and fix the spokes through the spoke holes 19 of the mounting blocks 12 to ensure the balance and stability of the wheel.

[0031] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the application shall be included in the protection scope of the present application.

Claims

1. A simplified hub, comprising a hub shell (1), characterized in that: Inside the hub shell (1), a middle tube body (2) is installed through a first bearing (3) and a second bearing (7). A middle tube fastener (16) is installed at the end of the middle tube body (2). A middle tube sealing ring (14) is arranged at one end of the middle tube body (2). The inner and outer diameters of the middle tube body (2) are smaller than those of the middle tube inside the traditional hub, so as to reduce friction and improve the rotation efficiency. Inner bearings (9) are arranged on one side of both the first bearing (3) and the second bearing (7). An inner limiting ring (10) is arranged outside the inner bearing (9) to limit the movement range of the inner bearing (9) and maintain the stability of the hub. Outer limiting rings (8) are arranged outside both the first bearing (3) and the second bearing (7) to further limit the movement of the bearings and enhance the overall rigidity of the hub.

2. The simplified flower drum according to claim 1, wherein: Bearing sealing rings (13) are arranged on the outer surfaces of both the first bearing (3) and the second bearing (7).

3. A simplified flower drum according to claim 1, characterized in that: A spring washer (18) is arranged between the hub shell (1) and the sleeve (5).

4. A simplified flower drum according to claim 1, characterized in that: A end cover washer (20) is arranged between the hub shell (1) and the end cover body (4), and the hub shell (1) and the end cover body (4) are connected to each other through an end cover fastener (17).

5. A simplified flower drum according to claim 1, characterized in that: A sleeve (5) is installed at one end of the side surface of the hub shell (1), and a plurality of mounting holes (6) are formed through the surface of the sleeve (5).

6. A simplified flower drum according to claim 1, characterized in that: Mounting blocks (12) are fixedly connected to both ends of the side surface of the hub shell (1), and a plurality of spoke holes (19) are formed through the surface of the mounting blocks (12).

7. A simplified flower drum according to claim 1, wherein: Cage (15) is installed inside both the first bearing (3) and the second bearing (7). The cage (15) is used to guide and fix the rolling elements in the inner bearing (9) and prevent them from colliding with each other or falling off.

8. A simplified flower drum according to claim 1, characterized in that: A configuration groove (11) is arranged between the inner side surface of the hub shell (1) and the middle tube body (2).

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