Backward brake type dual-purpose hub of bicycle

Abstract

The utility model discloses a bicycle reverse brake type dual-purpose hub which comprises a hub inner shaft, a hub cylinder body is fixedly assembled on the outer side of the hub inner shaft, a flywheel seat is fixedly assembled on one side between the hub inner shaft and the hub cylinder body, and a brake seat is arranged on the other side between the hub inner shaft and the hub cylinder body. And the other side in the hub barrel body is fixedly connected with a positioning rod. According to the reverse brake type dual-purpose hub of the bicycle, the positioning rods and the positioning grooves are arranged and matched with a threaded connection structure of the fixing bolts and the bolt grooves, the hub design greatly simplifies the mounting and dismounting process of the brake seat, an operator can fasten or loosen the fixing bolts only through simple rotating actions without using complex tools, and the operation is convenient. Therefore, the brake seat can be quickly disassembled and assembled, the efficiency of maintenance work is improved, the operation difficulty is reduced, and the damage risk caused by misoperation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hubs, in particular to a coaster brake dual-purpose hub for a bicycle. Background Art

[0002] In the field of bicycles, hubs are important components and their performance directly affects the riding experience and safety of bicycles.

[0003] Existing bicycle hub designs often adopt an integrated or welded structure to fix the brake seat inside the hub body. Although this design can ensure a certain structural strength, when the brake seat needs to be maintained or replaced, operators usually need to use professional tools and go through cumbersome steps to complete the task, which not only increases maintenance costs and time, but may also damage the hub structure due to improper operation, thereby reducing its service life. Utility Model Content

[0004] The purpose of the utility model is to provide a dual-purpose bicycle coaster brake hub to solve the problem proposed in the above background technology that the existing bicycle hub design often adopts an integrated or welded structure to fix the brake seat in the hub body. Although this design can ensure a certain structural strength, when the brake seat needs to be maintained or replaced, the operator usually needs to use professional tools and go through cumbersome steps to complete the maintenance, which not only increases the maintenance cost and time, but also may cause damage to the hub structure due to improper operation, thereby reducing its service life.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a bicycle coaster brake dual-purpose hub, comprising a hub inner shaft, the outer side of the hub inner shaft is fixedly equipped with a hub body, one side between the hub inner shaft and the hub body is fixedly equipped with a flywheel seat, the other side between the hub inner shaft and the hub body is provided with a brake seat, the other side inside the hub body is fixedly connected with a positioning rod, one side of the brake seat penetrates into the interior between the hub inner shaft and the hub body, one end of the brake seat is provided with a positioning groove, the other side of the hub body is fixedly connected with an extension tube, the top and bottom of the extension tube are both threadedly connected with fixing bolts, the top and bottom of the outer surface of the brake seat are both provided with bolt grooves, the surface of the hub body is fixedly connected with a protective layer, the outer side of the hub body is provided with a plurality of drainage grooves, and the protective layer comprises a biocompatible coating and an antistatic coating.

[0006] Compared with the prior art, the beneficial effects of the utility model are:

[0007] The bicycle coaster brake dual-purpose hub has a positioning rod and a positioning groove, and a threaded connection structure with a fixing bolt and a bolt groove. The hub design greatly simplifies the installation and disassembly process of the brake seat. The operator does not need to use complicated tools, and can complete the tightening or loosening of the fixing bolt through a simple rotating action, thereby realizing the rapid disassembly and assembly of the brake seat. This not only improves the efficiency of maintenance work, but also reduces the difficulty of operation and reduces the risk of damage caused by improper operation. The clamping structure of the positioning rod and the positioning groove ensures the stable assembly of the brake seat in the hub body, and effectively prevents the displacement or shaking of the brake seat during operation. This stable assembly method not only improves the overall structural strength of the hub, but also enhances its vibration and impact resistance, so that the hub can still maintain stable performance under complex road conditions and high-speed riding. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the structure of the utility model;

[0009] Figure 2 For this utility model Figure 1 A is a partial enlarged schematic diagram;

[0010] Figure 3 It is a structural stereogram of the hub body of the utility model;

[0011] Figure 4 This is a structural stereogram of the brake seat of the utility model;

[0012] Figure 5 This is a structural cross-sectional view of the protective layer of the utility model.

[0013] In the figure: 1. hub inner shaft; 2. hub body; 3. flywheel seat; 4. brake seat; 5. protective layer; 6. positioning groove; 7. positioning rod; 8. bolt groove; 9. extension tube; 10. fixing bolt; 11. annular sealing gasket 1; 12. drainage groove; 13. annular sealing gasket 2; 14. annular sealing gasket 3; 15. biocompatible coating; 16. antistatic coating; 17. assembly thread. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] See also Figure 1-5The utility model provides a technical solution: a bicycle coaster brake dual-purpose hub, comprising a hub inner shaft 1, a hub barrel 2 is fixedly mounted on the outer side of the hub inner shaft 1, a flywheel seat 3 is fixedly mounted on one side between the hub inner shaft 1 and the hub barrel 2, a brake seat 4 is arranged on the other side between the hub inner shaft 1 and the hub barrel 2, a positioning rod 7 is fixedly connected to the other side of the hub barrel 2, one side of the brake seat 4 penetrates into the interior between the hub inner shaft 1 and the hub barrel 2, a positioning groove 6 is opened at one end of the brake seat 4, an extension tube 9 is fixedly connected to the other side of the hub barrel 2, and the extension tube 9 The top and bottom are both threadedly connected with fixing bolts 10, the top and bottom of the outer surface of the brake seat 4 are provided with bolt grooves 8, the surface of the hub body 2 is fixedly connected with a protective layer 5, and the outer side of the hub body 2 is provided with a plurality of drainage grooves 12, which can effectively discharge the moisture accumulated on the surface of the hub and prevent corrosion problems caused by moisture retention. The protective layer 5 includes a biocompatible coating 15 and an antistatic coating 16. The biocompatible coating 15 improves the compatibility of the hub with human skin and reduces irritation to the skin; the antistatic coating 16 effectively reduces static electricity accumulation and improves the comfort of use.

[0016] The total number of the positioning rods 7 and the positioning grooves 6 is four, which ensures that the brake seat 4 is stably assembled in the hub body 2.

[0017] One side of the positioning rod 7 penetrates into the interior of the positioning groove 6 and is engaged with the positioning groove 6, which effectively prevents the brake seat 4 from being displaced or shaken during operation, thereby enhancing the stability and reliability of the entire hub structure.

[0018] The opposite sides of the two fixing bolts 10 respectively penetrate into the interior of the bolt groove 8 and are threadedly connected with the bolt groove 8, so that the installation and removal of the brake seat 4 become convenient and quick.

[0019] The inner wall of the extension tube 9 is fixedly connected with an annular sealing gasket 11, and the inner wall of the annular sealing gasket 11 contacts the outer wall of the brake seat 4, which effectively reduces the gap between the brake seat 4 and the extension tube 9, prevents moisture, dust and other impurities from entering the interior of the hub, and ensures the cleanliness and normal operation of the hub.

[0020] An annular sealing gasket 2 13 is fixedly connected to the outer surface of the flywheel seat 3 , and the outer wall of the annular sealing gasket 2 13 is in close contact with the inner wall of the hub barrel 2 , thereby enhancing the sealing between the flywheel seat 3 and the hub barrel 2 .

[0021] The inner wall of the flywheel seat 3 is fixedly connected with an annular sealing gasket 3 14 , and the inner wall of the annular sealing gasket 3 14 is in close contact with the outer wall of the hub inner shaft 1 , thereby enhancing the sealing performance between the flywheel seat 3 and the hub inner shaft 1 .

[0022] Both sides of the hub inner shaft 1 are provided with mounting threads 17 .

[0023] Working principle: To ensure the stable assembly of the brake seat 4, four positioning rods 7 are fixedly connected to the other side of the hub body 2, and a corresponding positioning groove 6 is opened at one end of the brake seat 4. The positioning rod 7 passes through the interior of the positioning groove 6 and is engaged with the positioning groove 6, thereby effectively preventing the brake seat 4 from being displaced or shaken during work. The installation and disassembly of the brake seat 4 are achieved by fixing bolts 10. The top and bottom of the extension tube 9 are both threadedly connected to the fixing bolts 10, and the top and bottom of the outer surface of the brake seat 4 are both provided with bolt grooves 8. When installing, screw the fixing bolts 10 into the bolt grooves 8 to tighten the brake seat 4; when disassembling, just unscrew the fixing bolts 10, and the operation is convenient and quick.

[0024] To sum up: the bicycle coaster brake dual-purpose hub, by setting a positioning rod 7 and a positioning groove 6, and cooperating with the threaded connection structure of the fixing bolt 10 and the bolt groove 8, the hub design greatly simplifies the installation and disassembly process of the brake seat 4. The operator does not need to use complicated tools, and can complete the tightening or loosening of the fixing bolt 10 through a simple rotation action, thereby realizing the rapid disassembly and assembly of the brake seat 4, which not only improves the efficiency of maintenance work, but also reduces the difficulty of operation, and reduces the risk of damage caused by improper operation. The clamping structure of the positioning rod 7 and the positioning groove 6 ensures the stable assembly of the brake seat 4 in the hub body 2, and effectively prevents the displacement or shaking of the brake seat 4 during operation. This stable assembly method not only improves the overall structural strength of the hub, but also enhances its vibration and impact resistance, so that the hub can still maintain stable performance under complex road conditions and high-speed riding.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bicycle coaster brake dual-purpose hub, comprising a hub inner shaft (1), characterized in that: The outer side of the hub inner shaft (1) is fixedly mounted with a hub barrel (2), one side between the hub inner shaft (1) and the hub barrel (2) is fixedly mounted with a flywheel seat (3), the other side between the hub inner shaft (1) and the hub barrel (2) is provided with a brake seat (4), the other side inside the hub barrel (2) is fixedly connected with a positioning rod (7), one side of the brake seat (4) penetrates into the interior between the hub inner shaft (1) and the hub barrel (2), and one end of the brake seat (4) is provided with a positioning Groove (6), an extension tube (9) is fixedly connected to the other side of the hub body (2), the top and bottom of the extension tube (9) are both threadedly connected with fixing bolts (10), the top and bottom of the outer surface of the brake seat (4) are both provided with bolt grooves (8), the surface of the hub body (2) is fixedly connected with a protective layer (5), the outer side of the hub body (2) is provided with a plurality of drainage grooves (12), and the protective layer (5) includes a biocompatible coating (15) and an antistatic coating (16).

2. The bicycle coaster brake dual-purpose hub according to claim 1, characterized in that: The total number of the positioning rods (7) and positioning grooves (6) is four.

3. The bicycle coaster brake dual-purpose hub according to claim 1, characterized in that: One side of the positioning rod (7) penetrates into the interior of the positioning groove (6) and is engaged with the positioning groove (6).

4. The bicycle coaster brake dual-purpose hub according to claim 1, characterized in that: The opposite sides of the two fixing bolts (10) respectively penetrate into the interior of the bolt groove (8) and are threadedly connected to the bolt groove (8).

5. The bicycle coaster brake dual-purpose hub according to claim 1, characterized in that: The inner wall of the extension tube (9) is fixedly connected to an annular sealing gasket 1 (11), and the inner wall of the annular sealing gasket 1 (11) is in contact with the outer wall of the brake seat (4).

6. The bicycle coaster brake dual-purpose hub according to claim 1, characterized in that: The outer surface of the flywheel seat (3) is fixedly connected with an annular sealing gasket 2 (13), and the outer wall of the annular sealing gasket 2 (13) is in close contact with the inner wall of the hub body (2).

7. The bicycle coaster brake dual-purpose hub according to claim 1, characterized in that: The inner wall of the flywheel seat (3) is fixedly connected with an annular sealing gasket three (14), and the inner wall of the annular sealing gasket three (14) is in close contact with the outer wall of the hub inner shaft (1).

8. The bicycle coaster brake dual-purpose hub according to claim 1, characterized in that: Both sides of the hub inner shaft (1) are provided with assembly threads (17).

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