Protection mechanism of bicycle hub

Abstract

The utility model relates to the technical field of hub protection, and provides a protective mechanism of a bicycle hub, which comprises a hub main body, a protective cover and limiters, two ends of the hub main body are symmetrically provided with hub discs, the side walls of the hub discs are both provided with bearings, the outer walls of the bearings are both provided with the limiters, and the protective cover is arranged on the hub main body. Sliding blocks are symmetrically arranged on the outer wall of the bearing, a protective cover is movably mounted on the outer wall of the bearing through the sliding blocks, sliding grooves are symmetrically formed in the inner wall of the protective cover, mounting holes are formed in the side walls of the sliding grooves, the front end of the limiting stopper extends to the outer wall of the protective cover through the mounting holes, and a threaded sleeve is movably mounted on the outer wall of the limiting stopper; a sealing ring is arranged at one end of the threaded sleeve, movable cavities are symmetrically formed in the inner wall of the drum disc, and the problems that in the prior art, a protection structure is poor in air tightness and inconvenient to disassemble and assemble are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hub protection, and specifically, to a protection mechanism for a bicycle hub. Background Art

[0002] The protection mechanism of a bicycle hub is mainly used to protect the components inside the hub, prevent damage to the hub by the external environment (such as dust, moisture, etc.), and ensure the normal operation of the hub. The protection mechanism of the bicycle hub is a key part to ensure the normal operation of the hub in various environments. Through technical means such as sealed bearings, protective covers, dust-proof rings, waterproof coatings, and airtight designs, the internal components of the hub can be effectively protected, its service life can be extended, and the safety and comfort of cycling can be improved. With the continuous progress of technology, future protection mechanisms will be more intelligent and efficient.

[0003] The patent specification with the publication number of CN 221292792 U discloses a protection mechanism for a bicycle hub. By setting a main body mechanism, a rotating shaft, a sealing mechanism, and an oil injection mechanism, the rotating shaft is arranged inside the main body mechanism, the sealing mechanism is arranged at both ends of the main body mechanism, the oil injection mechanism is arranged on the upper and lower sides of the main body mechanism, the first sealing ring is fixedly connected to one side of the partition disk close to the bearing, a clamping groove is formed on one side of the hub disk away from the hub main body, the mounting ring is inserted into the inside of the clamping groove, mounting boxes are symmetrically and fixedly connected to both sides of the mounting ring, and the upper end of the spring is fixedly connected to the upper end inside the mounting box. The sealing structure of this bicycle hub can seal and block both ends of the hub through the arranged slide bar, stop block, spring, and partition disk, and when it is necessary to inspect and maintain the parts inside the hub, it is convenient to disassemble the mounting ring from the rotating shaft to inspect and maintain the inside of the hub.

[0004] However, in the implementation of the related technology, it is found that the above protection mechanism for a bicycle hub has the following problems: the airtightness at both ends of the protection structure is poor, dust and water vapor are easy to enter the inside of the hub, affecting its use, and it is inconvenient to disassemble and assemble. Therefore, we propose a protection mechanism for a bicycle hub. Summary of the Utility Model

[0005] The utility model proposes a protection mechanism for a bicycle hub, which solves the problems of poor airtightness and inconvenient disassembly and assembly in the related technology.

[0006] The technical solution of the utility model is as follows:

[0007] A protective mechanism for a bicycle hub, comprising a hub body, a protective cover and a stopper. Drums are symmetrically arranged at both ends of the hub body. Bearings are installed on the side walls of the drums. Stoppers are arranged on the outer walls of the bearings. Sliders are symmetrically arranged on the outer walls of the bearings. The protective cover is movably installed on the outer wall of the bearing through the sliders. Chutes are symmetrically arranged on the inner wall of the protective cover. Mounting holes are arranged on the side walls of the chutes. The front end of the stopper extends to the outer wall of the protective cover through the mounting hole. A threaded sleeve is movably installed on the outer wall of the stopper. A sealing ring is arranged at one end of the threaded sleeve. Movable cavities are symmetrically arranged on the inner walls of the drums. Telescopic rods are installed on the inner walls of the movable cavities. A clamping block is arranged at one end of the telescopic rod. Springs are installed on the outer walls of the telescopic rods. Docking grooves are symmetrically arranged on the side walls of the drums. The docking grooves are located directly below the movable cavities. Catching pins are symmetrically arranged on the side walls of the protective cover. Grooves are arranged on the outer walls of the catching pins.

[0008] Preferably, the cross-section of the catching pin is trapezoidal, and the catching pin matches the docking groove.

[0009] Preferably, bevel surfaces are arranged on the side walls of the clamping block and the catching pin, and the bevel surfaces fit each other.

[0010] Preferably, movable grooves are symmetrically arranged on the outer wall of the drum. Slide rods are symmetrically arranged on the side wall of the clamping block. One end of the slide rod extends to the outer wall of the drum through the movable groove.

[0011] Preferably, internal threads are arranged on the inner wall of the threaded sleeve, and external threads matching the internal threads are arranged on the outer wall of the stopper.

[0012] Preferably, the slider is in a rectangular block structure, and the mounting hole fits the chute.

[0013] Preferably, the sealing ring is in a ring structure, and the sealing ring fits the inner wall of the mounting hole.

[0014] Preferably, the drum is in a disc shape, and drum holes are evenly arranged on the outer wall of the drum.

[0015] The working principle and beneficial effects of the present utility model are as follows:

[0016] 1. In the present utility model, through the provided chute, slider and docking groove, the chute provided on the inner wall of the protective cover is aligned with the slider provided on the outer wall of the bearing and inserted. At the same time, the pins symmetrically provided on the outer wall of the chute are inserted into the docking groove provided on the inner wall of the drum disc, so that the pins abut against the bottom end of the clamping block. Since the clamping block and the pins are trapezoidal structures that fit each other, when the pins are pushed horizontally and their side walls abut against the side walls of the clamping block, an upward force will be provided to the clamping block to squeeze the telescopic rod and the spring. When the pins completely enter the docking groove, the elastic force generated by the deformation of the spring will cause the front end of the clamping block to be clamped into the card slot provided at the top of the pins, fixing the protective cover at both ends of the hub body. By means of the internal thread provided on the inner wall of the threaded sleeve and the external thread provided on the outer wall of the limiter, the threaded sleeve is rotatably installed on the outer wall of the limiter while the sealing ring abuts against the outer wall of the mounting hole. The sealing ring is used to increase the sealing performance of the structure, providing all-round protection for both ends of the hub body. This structure is dust-proof and moisture-proof, preventing too much dust or moisture from entering the hub body and rusting, which may affect the rotation of the bearing, and can protect the hub body, avoiding dust and water vapor from entering the hub body and affecting the service life of the hub body.

[0017] 2. In the present utility model, through the provided protective cover, threaded sleeve and movable groove, when it is necessary to disassemble, replace or repair the protective cover, the threaded sleeve is removed from the outer wall of the limiter by rotating the threaded sleeve counterclockwise with a hex wrench. At the same time, the slide bar is manually pulled to move along the movable groove so that the slide bar leaves the card slot, and the card slot is taken out of the docking groove, and the protective cover is disassembled. This protective mechanism is convenient for disassembly, replacement and inspection and maintenance of the inside of the hub body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0019] Figure 1 Schematic structural diagram of the hub body proposed by the present utility model;

[0020] Figure 2 Schematic cross-sectional structure diagram of the protective cover proposed by the present utility model;

[0021] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at A proposed;

[0022] Figure 4 Schematic structural diagram of the limiter proposed by the present utility model;

[0023] Figure 5 Schematic structural diagram of the filter layer proposed by the present utility model.

[0024] In the figure: 1. Hub main body; 2. Drum disc; 3. Protective cover; 4. Threaded sleeve; 5. Limiter; 6. Slide groove; 7. Slide block; 8. Activity cavity; 9. Telescopic rod; 10. Spring; 11. Clamping block; 12. Activity groove; 13. Slide rod; 14. Docking groove; 15. Pin; 16. Card slot; 17. Mounting hole; 18. Sealing ring; 19. Bearing. Specific embodiments

[0025] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0026] Embodiment 1: As Figures 1 to 5 shown, this embodiment proposes a protection mechanism for a bicycle hub, including a hub main body 1, a protective cover 3 and a limiter 5. Drum discs 2 are symmetrically arranged at both ends of the hub main body 1. Bearings 19 are installed on the side walls of the drum discs 2. Limiters 5 are arranged on the outer walls of the bearings 19. Slide blocks 7 are symmetrically arranged on the outer walls of the bearings 19. The protective cover 3 is movably installed on the outer wall of the bearing 19 through the slide block 7. Slide grooves 6 are symmetrically arranged on the inner wall of the protective cover 3. Mounting holes 17 are arranged on the side walls of the slide grooves 6. The front end of the limiter 5 extends to the outer wall of the protective cover 3 through the mounting hole 17. A threaded sleeve 4 is movably installed on the outer wall of the limiter 5. A sealing ring 18 is arranged at one end of the threaded sleeve 4. Activity cavities 8 are symmetrically arranged on the inner walls of the drum discs 2. Telescopic rods 9 are installed on the inner walls of the activity cavities 8. A clamping block 11 is arranged at one end of the telescopic rod 9. Springs 10 are installed on the outer walls of the telescopic rods 9. Docking grooves 14 are symmetrically arranged on the side walls of the drum discs 2. The docking grooves 14 are located directly below the activity cavities 8. Pins 15 are symmetrically arranged on the side walls of the protective cover 3. Card slots 16 are arranged on the outer walls of the pins 15

[0027] In this embodiment, bevel surfaces are arranged on the side walls of the clamping block 11 and the pin 15, and the bevel surfaces fit with each other.

[0028] In this embodiment, the slide block 7 has a rectangular block structure, and the mounting hole 17 fits with the slide groove 6.

[0029] In this embodiment, the sealing ring 18 has an annular structure, and the sealing ring 18 fits with the inner wall of the mounting hole 17.

[0030] In this embodiment, the drum disc 2 has a disc shape, and drum holes are evenly arranged on the outer wall of the drum disc 2.

[0031] Specifically, as Figures 1 to 3As shown in the figure, when using this structure, the chute 6 provided on the inner wall of the protective cover 3 is aligned with the slider 7 provided on the outer wall of the bearing 19 and inserted. At the same time, the pins 15 symmetrically provided on the outer wall of the chute 6 are inserted into the docking groove 14 provided on the inner wall of the drum disc 2, so that the pins 15 abut against the bottom end of the clamping block 11. Since the clamping block 11 and the pins 15 are trapezoidal structures that fit each other, when the pins 15 are pushed horizontally and their side walls abut against the side walls of the clamping block 11, an upward force will be provided to the clamping block 11 to squeeze the telescopic rod 9 and the spring 10. When the pins 15 completely enter the docking groove 14, the elastic force generated by the deformation of the spring 10 will cause the front end of the clamping block 11 to be clamped into the card slot 16 provided at the top of the pins 15, fixing the protective cover 3 at both ends of the hub body 1. The threaded sleeve 4 is rotatably installed on the outer wall of the limiter 5 through the internal thread provided on the inner wall of the threaded sleeve 4 and the external thread provided on the outer wall of the limiter 5, and at the same time, the sealing ring 18 abuts against the outer wall of the mounting hole 17. The sealing ring 18 is used to increase the sealing performance of the structure, providing all-round protection for both ends of the hub body 1. This structure is dust-proof and moisture-proof, preventing too much dust or moisture from rusting inside the hub body 1 and affecting its use, and can provide protection for the hub body 1, preventing dust and water vapor from entering the inside of the hub body 1 and affecting the service life of the hub body 1.

[0032] Embodiment 2: The cross-section of the pin 15 is trapezoidal, and the pin 15 matches the docking groove 14.

[0033] In this embodiment, movable grooves 12 are symmetrically provided on the outer wall of the drum disc 2, sliding rods 13 are symmetrically provided on the side walls of the clamping block 11, and one end of the sliding rod 13 extends to the outer wall of the drum disc 2 through the movable groove 12.

[0034] In this embodiment, the inner wall of the threaded sleeve 4 is provided with an internal thread, and the outer wall of the limiter 5 is provided with an external thread that matches the internal thread.

[0035] Specifically, as shown in Figure 1 、 Figure 4 and Figure 5 When using this structure, when it is necessary to disassemble, replace, and repair the protective cover 3, the threaded sleeve 4 is rotated counterclockwise by a hex wrench to remove the threaded sleeve 4 from the outer wall of the limiter 5. At the same time, the sliding rod 13 is manually pulled to move along the movable groove 12 so that the sliding rod 13 leaves the card slot 16, and the card slot 16 is removed from the docking groove 14, and the protective cover 3 is disassembled. This protection mechanism is convenient for disassembly, replacement, and inspection and maintenance of the inside of the hub body 1.

[0036] Working principle: When in use, insert the sliding groove 6 provided on the inner wall of the protective cover 3 into the slider 7 provided on the outer wall of the bearing 19. At the same time, insert the pins 15 symmetrically provided on the outer wall of the sliding groove 6 into the docking groove 14 provided on the inner wall of the drum disc 2, so that the pins 15 abut against the bottom end of the clamping block 11. Since the clamping block 11 and the pins 15 are trapezoidal structures that fit each other, when the pins 15 are pushed horizontally and their side walls abut against the side walls of the clamping block 11, an upward force will be provided to the clamping block 11 to squeeze the telescopic rod 9 and the spring 10. When the pins 15 completely enter the docking groove 14, the elastic force generated by the deformation of the spring 10 will cause the front end of the clamping block 11 to be clamped into the card slot 16 provided at the top of the pins 15, so that the protective cover 3 is fixed at both ends of the hub body 1. Rotate the threaded sleeve 4 onto the outer wall of the stopper 5 by means of the internal thread provided on the inner wall of the threaded sleeve 4 and the external thread provided on the outer wall of the stopper 5, and at the same time make the sealing ring 18 abut against the outer wall of the mounting hole 17. Use the sealing ring 18 to increase the sealing performance of the structure, provide all-round protection for both ends of the hub body 1, prevent dust and moisture, avoid too much dust or moisture inside the hub body 1 affecting its use, and at the same time avoid damage to the side wall of the hub body 1 when the bicycle falls. When it is necessary to disassemble, replace and repair the protective cover 3, use a hex wrench to rotate the threaded sleeve 4 counterclockwise, remove the threaded sleeve 4 from the outer wall of the stopper 5, and at the same time manually pull the sliding rod 13 to move along the movable groove 12 so that the sliding rod 13 leaves the card slot 16, take out the card slot 16 from the docking groove 14, and disassemble the protective cover 3. This protection mechanism is convenient for disassembly to inspect and maintain the inside of the hub body 1, and at the same time can provide protection for the hub body 1 to prevent dust and water vapor from entering the inside of the hub body 1 and affecting the service life of the hub body 1.

[0037] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A protective mechanism for a bicycle hub, comprising a hub body (1), a protective cover (3) and a stopper (5), characterized in that: The hub body (1) is symmetrically provided with drum discs (2) at both ends, the side walls of the drum discs (2) are both installed with bearings (19), the outer walls of the bearings (19) are both provided with limiters (5), the outer walls of the bearings (19) are symmetrically provided with sliders (7), the outer walls of the bearings (19) are movably provided with protective covers (3) through the sliders (7), the inner walls of the protective covers (3) are symmetrically provided with slide grooves (6), the side walls of the slide grooves (6) are provided with mounting holes (17), the front end of the limiter (5) extends to the outer wall of the protective cover (3) through the mounting holes (17), and the outer wall of the limiter (5) is movably provided with the outer wall of the protective cover (3). A threaded sleeve (4) is provided, one end of the threaded sleeve (4) is provided with a sealing ring (18), the inner wall of the drum disc (2) is symmetrically provided with an active cavity (8), the inner wall of the active cavity (8) is provided with a telescopic rod (9), one end of the telescopic rod (9) is provided with a clamping block (11), the outer wall of the telescopic rod (9) is provided with a spring (10), the side wall of the drum disc (2) is symmetrically provided with a docking groove (14), the docking groove (14) is located directly below the active cavity (8), the side wall of the protective cover (3) is symmetrically provided with a bayonet (15), and the outer wall of the bayonet (15) is provided with a clamping groove (16).

2. A bicycle hub protection mechanism according to claim 1, characterized in that: The cross section of the bayonet (15) is trapezoidal, and the bayonet (15) and the docking groove (14) match each other.

3. A bicycle hub protection mechanism according to claim 2, characterized in that: The side walls of the clamping block (11) and the clamping pin (15) are both provided with chamfered surfaces, and the chamfered surfaces fit each other.

4. A bicycle hub protection mechanism according to claim 2, characterized in that: The outer wall of the drum disc (2) is symmetrically provided with movable grooves (12), and the side wall of the clamping block (11) is symmetrically provided with sliding rods (13), and one end of the sliding rod (13) extends to the outer wall of the drum disc (2) through the movable groove (12).

5. The protection mechanism for a bicycle hub according to claim 3, characterized in that: The inner wall of the threaded sleeve (4) is provided with an internal thread, and the outer wall of the stopper (5) is provided with an external thread matching the internal thread.

6. A bicycle hub protection mechanism according to claim 5, characterized in that: The sliding block (7) is in a rectangular block structure, and the mounting hole (17) and the sliding groove (6) fit each other.

7. A bicycle hub protection mechanism according to claim 6, characterized in that: The sealing ring (18) is an annular structure, and the sealing ring (18) is in close contact with the inner wall of the mounting hole (17).

8. The protection mechanism for a bicycle hub according to claim 5, characterized in that: The drum disc (2) is in the shape of a circular disc, and the outer wall of the drum disc (2) is evenly provided with drum holes.

Images