High-rigidity bicycle hollow shaft

Abstract

The utility model relates to the technical field of bicycles, and discloses a high-rigidity bicycle hollow shaft which comprises a hollow shaft body. The hollow shaft body comprises a shaft body and bearing bodies, and the two ends of the shaft body are detachably connected with the bearing bodies; the two bearing bodies are both fixedly sleeved with protection pieces. Pneumatic assemblies are installed on the peripheries of the two protection pieces, the air inlet ends of the pneumatic assemblies face the riding direction of the vehicle, and the air outlet ends of the pneumatic assemblies are connected with air blowing pieces facing the inner sides of the protection pieces. According to the high-rigidity bicycle hollow shaft provided by the utility model, through the structural design of the protective part, the sealing protection of the joint of the bearing body and the frame is realized, and the accumulation and invasion of dust particles are effectively prevented, so that the fault risk caused by the abrasion of the bearing body part is reduced, and the service life of the bearing body part is prolonged. And the service life of the bearing body and the reliability of the whole vehicle are improved.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, and in particular to a high-rigidity hollow bicycle shaft. Background Technology

[0002] A hollow axle, also known as a hollow integrated bottom bracket, is a modern bicycle axle design used to improve performance. This type of bottom bracket features a hollow steel core, providing high rigidity and reducing weight while increasing strength. The hollow axle is typically separate from the bearing, with the bearing externally mounted to reduce bearing stress and increase bearing life. The hollow axle connects directly to the crank, which is part of the bicycle pedals, and transmits power to the wheel via the hollow axle. The hollow axle is also connected to the chain via sprockets, and the chain is responsible for transmitting the power generated by the crank to the rear wheel.

[0003] Because the bearings of the hollow shaft are externally mounted, dust particles can easily accumulate at the connection between the bearings and the frame. These dust particles may wear down the bearing components and cause bearing failure.

[0004] To address the aforementioned issues, this application proposes a high-rigidity hollow bicycle shaft. Utility Model Content

[0005] Based on the technical problems existing in the background art, this utility model proposes a high-rigidity hollow bicycle shaft.

[0006] This utility model proposes a high-rigidity hollow bicycle shaft, including a hollow shaft body;

[0007] The hollow shaft body includes a shaft body and a bearing body, and the bearing body is detachably connected to both ends of the shaft body;

[0008] Protective components are fixedly fitted onto both of the bearing bodies;

[0009] Both of the protective components are equipped with wind-driven components on their outer periphery, with the air inlet of the wind-driven components facing the direction of vehicle riding, and the air outlet of the wind-driven components connected to a blower facing the inside of the protective components.

[0010] Preferably, the protective component includes a protective disc and a rubber ring. The protective disc is fixedly mounted on both bearing bodies, and the inner side of the protective disc is connected to the rubber ring fitted on the bearing body.

[0011] Preferably, the pneumatic assembly includes an air inlet pipe, an air filter, an air inlet chamber, an air outlet, and a fan. The air inlet pipe is installed on the outer periphery of the protective plate. The air filter is installed inside the air inlet pipe, and the air filter divides the air inlet pipe into an air inlet chamber and an air outlet chamber. An air outlet communicating with the air inlet chamber is opened at the end of the air inlet pipe away from the protective plate. A fan is rotatably connected to the middle of the air filter. The fan is connected to the end of the air inlet pipe near the protective plate and is positioned towards the rubber ring. The fan is also communicating with the air outlet chamber.

[0012] Preferably, the air filter includes a partition and a filter screen. The partition is installed inside the air inlet pipe, and the air inlet chamber and the air outlet chamber are separated by the partition. The partition has a through air passage hole, and a filter screen is installed inside the air passage hole.

[0013] Preferably, the fan component includes a rotating rod and fan blades. The rotating rod is connected to the middle of the partition via a one-way bearing, and the two ends of the rotating rod extend into the air inlet chamber and the air outlet chamber, respectively. Fan blades are installed at both ends of the rotating rod.

[0014] Preferably, the blower includes a blower pipe and a blower hole. The side of the air inlet pipe near the protective plate is connected to a blower pipe that communicates with the exhaust chamber. The blower pipe has a blower hole facing the rubber ring.

[0015] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0016] 1. By using protective components, the axle is inserted into the through hole in the lower part of the bicycle frame. Then, two bearing bodies are connected to the two ends of the axle and abut against the sides of the frame. Because the bearing bodies are fitted with protective components, when the bearing bodies are connected to the axle, the protective components abut against the frame, which can seal and protect the connection between the bearing bodies and the frame, preventing dust particles from accumulating at the connection between the bearing bodies and the frame. This structure, through the structural design of the protective components, achieves a sealed protection at the connection between the bearing bodies and the frame, effectively preventing the accumulation and intrusion of dust particles, thereby reducing the risk of failure of the bearing body components due to wear, improving the service life of the bearing bodies and the reliability of the whole vehicle.

[0017] 2. Through the installation of a pneumatic assembly and a blower, when the bicycle is being ridden, the air generated during riding can enter the pneumatic assembly on the protective component, and then be guided to the blower. The blower can then blow the air towards the inside of the protective component, preventing dust from accumulating there and providing further protection. This structure, by setting a pneumatic assembly and a blower with an air-guiding structure on the protective component, uses the air generated during riding as power to blow the air towards the inside of the protective component, effectively preventing dust from accumulating there, enhancing the protection of the bearing body, reducing bearing wear and failure caused by dust, improving riding safety and the ease of bicycle maintenance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-rigidity hollow bicycle shaft proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of the wind-driven component of this utility model.

[0020] Figure 3 This is a schematic diagram of the internal structure of the wind-driven component of this utility model.

[0021] Figure 4 This utility model Figure 3 A schematic diagram of a local structure.

[0022] Reference numerals: 1. Hollow shaft body; 11. Shaft body; 12. Bearing body; 2. Protective component; 21. Protective disc; 22. Rubber ring; 3. Pneumatic assembly; 31. Air inlet pipe; 32. Air filter; 321. Partition plate; 322. Filter screen; 33. Air inlet chamber; 34. Air outlet chamber; 35. Air inlet; 36. Fan component; 361. Rotating rod; 362. Fan blade; 4. Blowing component; 41. Blowing pipe; 42. Blowing hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0024] like Figure 1-4 As shown, the present invention proposes a high-rigidity hollow bicycle shaft, which includes a hollow shaft body 1;

[0025] In this embodiment, the hollow shaft body 1 includes a shaft body 11 and a bearing body 12, and the bearing body 12 is detachably connected to both ends of the shaft body 11.

[0026] In this embodiment, protective components 2 are fixedly mounted on both bearing bodies 12. The protective components 2 include a protective disc 21 and a rubber ring 22. The protective disc 21 is fixedly mounted on both bearing bodies 12, and the rubber ring 22 sleeved on the bearing body 12 is connected to the inner side of the protective disc 21.

[0027] It should be noted that: the axle 11 is inserted into the through hole in the lower part of the bicycle frame, and then the two bearing bodies 12 are respectively connected to the two ends of the axle 11 and abut against the sides of the frame. Since the bearing body 12 is fitted with a protective disc 21, when the bearing body 12 is connected to the axle 11, the rubber ring 22 on the inner side of the protective disc 21 can abut against the frame. The rubber ring 22 can seal and protect the connection between the bearing body 12 and the frame, preventing dust particles from accumulating at the connection between the bearing body 12 and the frame. This structure, through the structural design of the protective component 2, achieves a sealed protection at the connection between the bearing body 12 and the frame, effectively preventing the accumulation and intrusion of dust particles, thereby reducing the risk of failure of the bearing body 12 due to wear, improving the service life of the bearing body 12 and the reliability of the whole vehicle.

[0028] In this embodiment, a wind-driven component 3 is installed on the outer periphery of both protective components 2, and the air inlet end of the wind-driven component 3 faces the direction of vehicle riding, and the air outlet end of the wind-driven component 3 is connected to a blower 4 facing the inside of the protective component 2.

[0029] In this embodiment, the pneumatic assembly 3 includes an air inlet pipe 31, an air filter 32, an air inlet chamber 33, an air outlet chamber 34, an air inlet 35, and a fan 36. An air inlet pipe 31 is installed on the outer periphery of the protective disc 21. An air filter 32 is installed inside the air inlet pipe 31, dividing the air inlet pipe 31 into an air inlet chamber 33 and an air outlet chamber 34. An air inlet 35 communicating with the air inlet chamber 33 is opened at the end of the air inlet pipe 31 away from the protective disc 21. A fan 36 is rotatably connected to the middle of the air filter 32. A blower 4 is connected to the end of the air inlet pipe 31 near the protective disc 21 and faces the rubber ring 2. 2. The blowing component 4 is connected to the exhaust chamber 34. The air filter 32 includes a partition 321 and a filter screen 322. The partition 321 is installed in the air inlet pipe 31. The air inlet chamber 33 and the exhaust chamber 34 are separated by the partition 321. A through air passage is opened in the partition 321, and a filter screen 322 is installed in the air passage. The fan component 36 includes a rotating rod 361 and a fan blade 362. The rotating rod 361 is connected to the middle of the partition 321 through a one-way bearing. The two ends of the rotating rod 361 extend into the air inlet chamber 33 and the exhaust chamber 34, respectively. Fan blades 362 are installed at both ends of the rotating rod 361.

[0030] In this embodiment, the blower 4 includes a blower pipe 41 and a blower hole 42. The side of the air inlet pipe 31 near the protective plate 21 is connected to the blower pipe 41, which communicates with the exhaust chamber 34. The blower pipe 41 has a blower hole 42 facing the rubber ring 22.

[0031] It should be noted that when the bicycle is being ridden, the wind generated during riding enters the air intake chamber 33 through the air intake 35 on the air intake pipe 31, and then enters the exhaust chamber 34 through the filter screen 322. During this process, the wind passes over the surface of the fan blade 362, which can drive the fan blade 362 and the rotating rod 361 to rotate simultaneously. The wind force generated when the fan blade 362 rotates is stronger. Then, the wind is blown towards the inside of the protective plate 21 through the air blowing hole 42 on the air blowing pipe 41, preventing dust from accumulating on the rubber ring 22 and further protecting it. This structure uses the wind-driven component 3 and the air blowing component 4 with the air guiding structure on the protective component 2 to blow the wind towards the inside of the protective component 2, effectively preventing dust from accumulating on the inside of the protective component 2, enhancing the protection effect on the bearing body 12, reducing the wear and failure of the bearing body 12 caused by dust, improving the safety of riding and the convenience of bicycle maintenance.

[0032] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A high-rigidity hollow bicycle axle, comprising a hollow axle body (1), characterized in that: The hollow shaft body (1) includes a shaft body (11) and a bearing body (12), and the bearing body (12) is detachably connected to both ends of the shaft body (11). Protective components (2) are fixedly fitted on both of the bearing bodies (12); Both of the protective components (2) are equipped with a wind-driven assembly (3) on their outer periphery, and the air inlet of the wind-driven assembly (3) faces the direction of vehicle riding. The air outlet of the wind-driven assembly (3) is connected to a blower (4) facing the inside of the protective component (2).

2. The high-rigidity hollow bicycle shaft according to claim 1, characterized in that, The protective component (2) includes a protective disc (21) and a rubber ring (22). The protective disc (21) is fixedly mounted on both bearing bodies (12), and the inner side of the protective disc (21) is connected to the rubber ring (22) mounted on the bearing body (12).

3. The high-rigidity hollow bicycle shaft according to claim 2, characterized in that, The pneumatic assembly (3) includes an air inlet pipe (31), an air filter (32), an air inlet chamber (33), an air outlet chamber (34), an air inlet (35), and a fan (36). An air inlet pipe (31) is installed on the outer periphery of the protective plate (21). An air filter (32) is installed inside the air inlet pipe (31), and the air filter (32) divides the air inlet pipe (31) into an air inlet chamber (33) and an air outlet chamber (34). An air inlet (35) communicating with the air inlet chamber (33) is opened at the end of the air inlet pipe (31) away from the protective plate (21). A fan (36) is rotatably connected to the middle of the air filter (32). A blower (4) is connected to the end of the air inlet pipe (31) near the protective plate (21) and is set towards the rubber ring (22). The blower (4) is communicating with the air outlet chamber (34).

4. A high-rigidity hollow bicycle shaft according to claim 3, characterized in that, The air filter (32) includes a partition (321) and a filter screen (322). The partition (321) is installed in the air inlet pipe (31). The air inlet chamber (33) and the air outlet chamber (34) are separated by the partition (321). A through air passage is provided in the partition (321), and a filter screen (322) is provided in the air passage.

5. A high-rigidity hollow bicycle shaft according to claim 4, characterized in that, The fan component (36) includes a rotating rod (361) and fan blades (362). The rotating rod (361) is connected to the middle of the partition (321) by a one-way bearing. The two ends of the rotating rod (361) extend into the air inlet chamber (33) and the air outlet chamber (34) respectively. Fan blades (362) are installed at both ends of the rotating rod (361).

6. A high-rigidity hollow bicycle shaft according to claim 3, characterized in that, The blower (4) includes a blower pipe (41) and a blower hole (42). The side of the air inlet pipe (31) near the protective plate (21) is connected to a blower pipe (41) that communicates with the exhaust chamber (34). The blower pipe (41) has a blower hole (42) facing the rubber ring (22).

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