Waterproof bicycle hub

Abstract

The utility model provides a waterproof bicycle hub which comprises a hub inner shaft, two positioning rings symmetrically and fixedly connected to the hub inner shaft in a sleeving mode, two fixing screw rods fixed to the two ends of the hub inner shaft respectively, a hub outer shaft movably arranged outside the hub inner shaft in a sleeving mode and two spoke discs symmetrically arranged on the hub outer shaft. The two bearings are symmetrically fixed to the hub inner shaft, the two assembling grooves are formed in the two ends of the hub outer shaft correspondingly and used for installing the two bearing outer rings correspondingly, and the fixing bases are in threaded connection with the two fixing screw rods correspondingly and abut against the two bearing inner rings correspondingly; according to the waterproof bicycle hub, through the arrangement of the two protection assemblies, the two ends of the hub outer shaft can be effectively protected, rainwater cannot enter the hub, then rainwater and dust are prevented from making direct contact with the bearing, the service life of the hub is effectively prolonged, and certain influences on riding are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle hubs, in particular to a waterproof bicycle hub. Background Art

[0002] Bicycle hubs, commonly known as "hub barrels," come in two varieties: iron hubs and aluminum hubs. Iron hubs are commonly used on home bikes, while aluminum hubs are typically higher-end hubs, used on mountain bikes, performance bikes, road bikes, and other types of bikes. Bicycle hubs connect the spokes to the axle and are a crucial component on bicycles. The quality of the hubs directly impacts a bicycle's average speed.

[0003] However, existing bicycle hubs have some defects or deficiencies:

[0004] The bearings at the connection between the inner and outer shafts of the existing hub are generally exposed to the outside world. Due to the complex road conditions, a large amount of dust and rainwater often enter between the inner and outer shafts of the hub when the bicycle is in use, affecting the bearings, thereby hindering the relative rotation between the inner and outer shafts of the hub, greatly affecting the smoothness of bicycle riding performance, and under the erosion of rainwater, affecting the overall service life of the hub. Utility Model Content

[0005] The purpose of this utility model is to provide a waterproof bicycle hub to solve the above problems.

[0006] In order to achieve the above-mentioned objectives, an embodiment of the present invention provides a waterproof bicycle hub, comprising: a hub inner shaft, two positioning rings symmetrically fixedly sleeved on the hub inner shaft, two fixing screws respectively fixed to the two ends of the hub inner shaft, a hub outer shaft movably sleeved outside the hub inner shaft, two spoke disks symmetrically arranged on the hub outer shaft, two bearings symmetrically fixed on the hub inner shaft, two assembly grooves respectively opened at the two ends of the hub outer shaft and used to install the two bearing outer rings respectively, fixing seats respectively threadedly connected to the two fixing screws and respectively abutting against the two bearing inner rings, two protective components respectively arranged at the two ends of the hub outer shaft and on the two fixing screws, assembly components respectively arranged on the two fixing screws, the two fixing seats and the two protective components, and two positioning components respectively arranged on the assembly component, wherein

[0007] The two protective components are suitable for protecting the joints between the two ends of the inner shaft of the hub and the two ends of the outer shaft of the hub respectively;

[0008] The two assembly components are suitable for completing the installation of the two protection components on both ends of the inner shaft of the hub;

[0009] The two positioning components are suitable for limiting the position of the assembly component.

[0010] Furthermore, the protective assembly includes a first protective cover and a second protective cover sleeved on the fixing screw and the outside of the hub outer shaft, two docking blocks symmetrically fixed on the first protective cover, two docking grooves symmetrically provided on the second protective cover, a conical retaining ring fixedly sleeved on the hub outer shaft, protective grooves provided on the inner walls of the first protective cover and the second protective cover and adapted to the conical retaining ring, and a drainage groove provided at the lower ends of the first protective cover and the second protective cover;

[0011] The two docking blocks are respectively fitted and slidably inserted into the two docking grooves;

[0012] There is a movable gap between the first protective cover, the second protective cover and the conical retaining ring.

[0013] Furthermore, the assembly component includes a plurality of fixing protrusions fixed to the fixing seat in an annular array, a plurality of fixing grooves provided on the inner walls of the first protective cover and the second protective cover, an assembly ring threadedly mounted on the fixing screw, two conical stop grooves provided on the outer walls of the first protective cover and the second protective cover, and a conical stop ring fixed to the assembly ring and adapted to the conical stop grooves;

[0014] The plurality of fixing protrusions are respectively fitted and slidably inserted into the plurality of fixing grooves.

[0015] Furthermore, the positioning assembly includes a threaded groove provided on the assembly ring, a positioning screw threadedly connected to the assembly ring through the threaded groove, and a positioning groove provided on the fixing screw and corresponding to the positioning screw;

[0016] The thread groove is arranged below the fixing screw rod.

[0017] Furthermore, outer walls of the two fixing seats are fixedly connected with protective rings, and both ends of the hub outer shaft are provided with conical guide grooves.

[0018] Furthermore, a plurality of anti-slip grooves are distributed in an annular arrangement on the outer portion of the assembly ring.

[0019] Furthermore, both fixing screws are threadedly connected with fixing nuts, and both fixing nuts are provided with washers.

[0020] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0021] 1. This waterproof bicycle hub protects the connection between the inner hub shaft and the outer hub shaft through the cooperation of the first protective cover and the second protective cover in the protective assembly when it rains or when the bicycle is ridden on complex roads, thereby preventing the bearings from being exposed. In addition, under the shielding of the conical retaining ring in the protective assembly, the movable gap between the first protective cover and the second protective cover and the outer hub shaft is tilted, so that rainwater is not likely to penetrate into the first protective cover and the second protective cover through the movable gap. If some rainwater enters the movable gap, it can also be discharged from the drain groove by gravity, thereby making the hub use smooth when riding the bicycle, ensuring the normal use of the bicycle, and preventing the bearings from rusting due to erosion by rainwater, thereby extending the overall service life of the hub.

[0022] 2. The waterproof bicycle hub is provided with an assembly component, which facilitates the assembly of the protective component at the connection between the outer shaft and the inner shaft of the hub, and ensures the stability of the protective component after assembly. The first protective cover and the second protective cover in the protective component are stably connected and will not affect the normal use of the hub. Under the control of the positioning component, when the bicycle is riding and the hub vibrates, the loosening of the assembly component on the fixing screw is avoided, thereby improving the stability of the protective component during use and avoiding affecting the normal protective effect of the protective component. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 Shows a perspective view of the present utility model;

[0025] Figure 2 Shows a partially cutaway perspective view of the present invention Figure 1 ;

[0026] Figure 3 Shows a partially cutaway perspective view of the present invention Figure 2 ;

[0027] Figure 4 Shows a partial cutaway view of the present invention Figure 1 ;

[0028] Figure 5 Shows a partial cutaway view of the present invention Figure 2 .

[0029] In the picture

[0030] 1. Hub inner shaft; 2. Positioning ring; 3. Fixing screw; 4. Hub outer shaft; 5. Spoke plate; 6. Bearing; 7. Assembly groove; 8. Fixed seat; 10. Protective assembly; 11. Assembly assembly; 12. Positioning assembly; 13. First protective cover; 14. Second protective cover; 15. Docking block; 16. Docking groove; 17. Conical retaining ring; 18. Protective groove; 19. Movable gap; 20. Fixing block; 21. Fixing groove; 22. Assembly ring; 23. Conical stop groove; 24. Conical stop ring; 25. Threaded groove; 26. Positioning screw; 27. Positioning groove; 28. Protective ring; 29. Conical guide groove; 30. Fixing nut; 31. Gasket; 32. Drain groove. DETAILED DESCRIPTION

[0031] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0032] like Figure 1-5 As shown, a waterproof bicycle hub comprises: a hub inner shaft 1, two positioning rings 2 symmetrically fixedly sleeved on the hub inner shaft 1, two fixing screws 3 respectively fixed at both ends of the hub inner shaft 1, a hub outer shaft 4 movably sleeved outside the hub inner shaft 1, two spoke discs 5 symmetrically arranged on the hub outer shaft 4, two bearings 6 symmetrically fixed on the hub inner shaft 1, two assembly grooves 7 respectively opened at both ends of the hub outer shaft 4 and used to install the outer rings of the two bearings 6, a fixing seat 8 respectively threadedly connected to the two fixing screws 3 and respectively abutting against the inner rings of the two bearings 6, two protective assemblies 10 respectively arranged at both ends of the hub outer shaft 4 and on the two fixing screws 3, an assembly assembly 11 respectively arranged on the two fixing screws 3, the two fixing seats 8 and the two protective assemblies 10, and two positioning assemblies 12 respectively arranged on the assembly assembly 11, wherein

[0033] The two protection components 10 are suitable for protecting the joints between the two ends of the hub inner shaft 1 and the two ends of the hub outer shaft 4 respectively;

[0034] The two assembly components 11 are suitable for completing the installation of the two protection components 10 at both ends of the hub inner shaft 1;

[0035] The two positioning components 12 are suitable for limiting the position of the assembly component 11. When in use, the two assembly components 11 can be used to quickly install the two protection components 10 at both ends of the hub outer shaft 4, and the stability of the protection components 10 after being installed and sleeved at both ends of the hub outer shaft 4 can be ensured, so that the first protection cover 13 and the second protection cover 14 in the two protection components 10 can be docked stably, effectively improving the protection effect of the two first protection covers 13 and the two second protection covers 14; with the cooperation of the two protection components 10, the two ends of the hub outer shaft 4 can be protected, avoiding the two bearings 6 used to connect the hub outer shaft 4 and the hub inner shaft 1 from being directly exposed. The outside world prevents rain from entering between the hub outer shaft 4 and the hub inner shaft 1 when the bicycle hub is in use, thereby ensuring smooth use of the hub when riding a bicycle, and preventing rain from eroding the two bearings 6, thereby ensuring the service life of the bicycle hub; and after the two protective components 10 are installed through the two assembly components 11, the two positioning components 12 can be used to reinforce the two assembly components 11, thereby preventing the hub from vibrating when riding a bicycle and affecting the stability of the installation of the two assembly components 11 on the two protective components 10, thereby ensuring the protective effect of the two protective components 10, and making the overall connection of the bicycle hub more stable and safer to use.

[0036] Optionally, the protective assembly 10 includes a first protective cover 13 and a second protective cover 14 sleeved on the outside of the fixing screw 3 and the hub outer shaft 4, two docking blocks 15 symmetrically fixed on the first protective cover 13, two docking grooves 16 symmetrically opened on the second protective cover 14, a conical retaining ring 17 fixedly sleeved on the hub outer shaft 4, a protective groove 18 opened on the inner walls of the first protective cover 13 and the second protective cover 14 and adapted to the conical retaining ring 17, and a drainage groove 32 opened at the lower ends of the first protective cover 13 and the second protective cover 14;

[0037] The two docking blocks 15 are respectively fitted and slidably inserted into the two docking grooves 16;

[0038] There is a movable gap 19 between the first protective cover 13 and the second protective cover 14 and the conical retaining ring 17. When in use, the first protective cover 13 and the second protective cover 14 are connected to each other through the two docking blocks 15 and the docking grooves 16, thereby protecting both ends of the hub outer shaft 4 to prevent the bearing 6 from being exposed to the outside. Since the hub outer shaft 4 is provided with a conical retaining ring 17, and the first protective cover 13 and the second protective cover 14 are provided with a protective groove 18 corresponding to the conical retaining ring 17, the first protective cover 13 and the second protective cover 14 are connected to the conical retaining ring 17. The movable gap 19 between the rings 17 is set obliquely, and the movable gap 19 is close to the first protective cover 13 and the second protective cover 14 for upward cleaning, so that when rainwater falls on the hub outer shaft 4, it will be blocked by the conical retaining ring 17, and rainwater is not likely to enter the first protective cover 13 and the second protective cover 14 through the movable gap 19; and when some rainwater enters the movable gap 19 or the first protective cover 13 and the second protective cover 14, it will also be discharged through gravity along the drain groove 32, avoiding water accumulation in the first protective cover 13 and the second protective cover 14, thereby ensuring the waterproof effect of the bicycle hub.

[0039] Optionally, the assembly component 11 includes a plurality of fixing protrusions 20 annularly arranged and fixed to the fixing seat 8, a plurality of fixing grooves 21 provided on the inner walls of the first protective cover 13 and the second protective cover 14, an assembly ring 22 threadedly mounted on the fixing screw 3, two conical stop grooves 23 respectively provided on the outer walls of the first protective cover 13 and the second protective cover 14, and a conical stop ring 24 fixed to the assembly ring 22 and adapted to the conical stop grooves 23;

[0040] The plurality of fixing protrusions 20 are respectively fitted and slidably inserted into the plurality of fixing grooves 21. When the bicycle hub is installed, the plurality of fixing grooves 21 on the first protective cover 13 and the second protective cover 14 are aligned with the plurality of fixing protrusions 20 on the fixing seat 8. Then, the first protective cover 13 and the second protective cover 14 are moved so that the plurality of fixing protrusions 20 are respectively inserted into the plurality of fixing grooves 21 to complete the preliminary positioning of the first protective cover 13 and the second protective cover 14. Then, the assembly ring 22 is rotated and threadedly installed on the fixing screw 3. When the assembly ring 22 moves on the fixing screw 3 and approaches the first protective cover 13 and the second protective cover 14, the assembly ring 22 is rotated and threadedly installed on the fixing screw 3. When the second protective cover 14 is assembled, the conical stop ring 24 will approach and enter the two conical stop grooves 23, and as the assembly ring 22 moves, it will resist and control the movement of the first protective cover 13 and the second protective cover 14. While clamping the first protective cover 13 and the second protective cover 14 between the assembly ring 22 and the fixing seat 8, the first protective cover 13 and the second protective cover 14 can be controlled to be in close contact, completing the rapid assembly of the first protective cover 13 and the second protective cover 14, and effectively preventing water from penetrating into the first protective cover 13 and the second protective cover 14 through the position where the first protective cover 13 and the second protective cover 14 contact each other.

[0041] Optionally, the positioning assembly 12 includes a threaded groove 25 provided on the assembly ring 22, a positioning screw 26 threadedly connected to the assembly ring 22 through the threaded groove 25, and a positioning groove 27 provided on the fixing screw 3 and corresponding to the positioning screw 26;

[0042] The thread groove 25 is provided below the fixing screw 3. After the assembly ring 22 is rotatably mounted on the fixing screw 3 and the assembly of the first protective cover 13 and the second protective cover 14 is completed, the positioning screw 26 can be rotated so that its head end enters the positioning groove 27, thereby reinforcing the installation of the assembly ring 22 on the fixing screw 3, effectively preventing the assembly ring 22 from loosening due to vibration when the bicycle is used for a long time, thereby affecting the assembly effect of the first protective cover 13 and the second protective cover 14, thereby ensuring the protective effect of the first protective cover 13 and the second protective cover 14.

[0043] Optionally, the outer walls of the two fixing seats 8 are fixedly connected with protective rings 28, and both ends of the hub outer shaft 4 are provided with conical guide grooves 29. The protective rings 28 can further protect the bearings 6, and when some water seeps into the first protective cover 13 and the second protective cover 14, the conical guide grooves 29 can guide the water, thereby improving the effect of draining the accumulated water through the drain groove 32, thereby preventing water from entering the bearings 6, further protecting the bearings 6 and effectively improving the waterproof effect of the device.

[0044] Optionally, a plurality of anti-slip grooves are distributed in an outer ring shape in an array. The anti-slip grooves are provided to facilitate the staff to twist the assembly ring 22 by hand. When the assembly ring 22 is thin and inconvenient to operate with tools, the movement of the assembly ring 22 on the fixing screw 3 can also be completed quickly, thereby facilitating the assembly of the entire bicycle hub.

[0045] Optionally, both fixing screws 3 are threadedly connected with fixing nuts 30, and both fixing nuts 30 are provided with washers 31. By rotating the set fixing nuts 30 to cooperate with the washers 31, the connection and installation of the front or rear rack of the bicycle and the hub can be quickly completed.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A waterproof bicycle hub, characterized in that: include: A hub inner shaft (1), two positioning rings (2) symmetrically fixedly sleeved on the hub inner shaft (1), two fixing screws (3) respectively fixed to the two ends of the hub inner shaft (1), a hub outer shaft (4) movably sleeved outside the hub inner shaft (1), two spoke discs (5) symmetrically arranged on the hub outer shaft (4), two bearings (6) symmetrically fixed on the hub inner shaft (1), and two mounting holes respectively provided at the two ends of the hub outer shaft (4) and used to mount the outer rings of the two bearings (6). A matching groove (7), a fixing seat (8) respectively threadedly connected to the two fixing screws (3) and respectively abutting against the inner rings of the two bearings (6), two protective components (10) respectively arranged at both ends of the hub outer shaft (4) and on the two fixing screws (3), an assembly component (11) respectively arranged on the two fixing screws (3), the two fixing seats (8) and the two protective components (10), and two positioning components (12) respectively arranged on the assembly component (11), wherein The two protection components (10) are suitable for protecting the joints between the two ends of the hub inner shaft (1) and the two ends of the hub outer shaft (4); The two assembly components (11) are suitable for completing the installation of the two protection components (10) at both ends of the hub inner shaft (1); The two positioning components (12) are suitable for limiting the position of the assembly component (11).

2. A waterproof bicycle hub as claimed in claim 1, characterized in that: The protective assembly (10) includes a first protective cover (13) and a second protective cover (14) sleeved on the outside of the fixing screw (3) and the hub outer shaft (4), two docking blocks (15) symmetrically fixed on the first protective cover (13), two docking grooves (16) symmetrically opened on the second protective cover (14), a conical retaining ring (17) fixedly sleeved on the hub outer shaft (4), a protective groove (18) opened on the inner walls of the first protective cover (13) and the second protective cover (14) and adapted to the conical retaining ring (17), and a drainage trough (32) opened at the lower ends of the first protective cover (13) and the second protective cover (14); The two docking blocks (15) are respectively fitted and slidably inserted into the two docking grooves (16); A movable gap (19) is left between the first protective cover (13), the second protective cover (14) and the conical retaining ring (17).

3. A waterproof bicycle hub as claimed in claim 2, characterized in that: The assembly component (11) includes a plurality of fixing protrusions (20) fixed in an annular array on the fixing seat (8), a plurality of fixing grooves (21) provided on the inner walls of the first protective cover (13) and the second protective cover (14), an assembly ring (22) threadedly mounted on the fixing screw (3), two conical stop grooves (23) respectively provided on the outer walls of the first protective cover (13) and the second protective cover (14), and a conical stop ring (24) fixed on the assembly ring (22) and adapted to the conical stop grooves (23); The plurality of fixing protrusions (20) are respectively fitted and slidably inserted into the plurality of fixing grooves (21).

4. A waterproof bicycle hub as claimed in claim 3, characterized in that: The positioning assembly (12) includes a thread groove (25) provided on the assembly ring (22), a positioning screw (26) threadedly connected to the assembly ring (22) through the thread groove (25), and a positioning groove (27) provided on the fixing screw (3) and corresponding to the positioning screw (26); The thread groove (25) is provided on the fixing screw rod (3).

5. The waterproof bicycle hub according to claim 4, characterized in that: The outer walls of the two fixing seats (8) are both fixedly connected with protective rings (28), and both ends of the hub outer shaft (4) are provided with conical guide grooves (29).

6. The waterproof bicycle hub according to claim 5, characterized in that: The outer annular portion of the assembly ring (22) is provided with a plurality of anti-slip grooves distributed in an array.

7. The waterproof bicycle hub according to claim 6, wherein: The two fixing screws (3) are both threadedly connected with fixing nuts (30), and the two fixing nuts (30) are both provided with washers (31).

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