Bicycle hub structure

Abstract

The utility model provides a bicycle hub structure and relates to the technical field of bicycles. The ratchet wheel comprises first gears, a shaft center, an input assembly, a ratchet wheel claw, a gear ring, a hub shell and a transmission assembly, the two first gears are movably connected to the shaft center and are symmetrically arranged, the input assembly is connected with one of the first gears, and the transmission assembly is connected to the shaft center. The transmission assembly is in transmission connection with the two first gears and enables the two first gears to rotate reversely, each first gear is connected with a ratchet pawl, the ratchet pawl on each side is connected with a gear ring in a matched mode and combined to form a ratchet structure, and the two gear rings are connected with the hub shell. According to the bicycle hub structure, the hub shell and a transmission system can be combined together, the structural form is simplified, the size is effectively reduced, the bicycle hub structure is more hidden and more attractive, meanwhile, the transmission mode is more concise and effective, and the transmission efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of bicycle technology, and in particular to a bicycle hub structure. Background Technology

[0002] In recent years, cycling has become increasingly popular as a healthy sport. To make cycling more enjoyable, many people try to pedal backwards, which often results in the wheels spinning freely. To address this issue, manufacturers have begun developing hub structures that allow the wheels to work while pedaling backwards and maintain normal riding performance.

[0003] The applicant has discovered at least the following technical problems in the prior art: the existing hub structure is relatively complex, and the hub and transmission structure are set separately, which takes up space and results in a large hub structure that is not very aesthetically pleasing. Utility Model Content

[0004] The purpose of this utility model is to provide a bicycle hub structure to solve the technical problems existing in the prior art. The various technical effects of the preferred technical solutions among the many technical solutions provided by this utility model are detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A bicycle hub structure includes a first gear, a shaft, an input component, a ratchet pawl, a toothed ring, a hub housing, and a transmission component. Two first gears are movably connected to the shaft and symmetrically arranged. The input component is connected to one of the first gears. The transmission component is connected to the shaft and is driven by both first gears, causing the two first gears to rotate in opposite directions. Each first gear is connected to a ratchet pawl. Each side of the ratchet pawl is engaged with a toothed ring to form a ratchet structure. Both toothed rings are connected to the hub housing.

[0007] Preferably, each of the first gears is connected to a plurality of ratchet pawls, and the plurality of ratchet pawls are evenly distributed circumferentially.

[0008] Preferably, the input component includes a first pawl platform and a flywheel, one end of the first pawl platform is fixedly connected to the first gear, and the flywheel is sleeved on the other end of the first pawl platform.

[0009] Preferably, the input component includes a second claw stage and a pulley, one end of the second claw stage is fixedly connected to the first gear, and the pulley is sleeved on the other end of the second claw stage.

[0010] Preferably, the transmission assembly includes a fixed base and two second gears. The fixed base is connected to the shaft, and the two second gears are movably connected to the fixed base via bearings and are symmetrically arranged. Each second gear simultaneously meshes with both first gears.

[0011] Preferably, both the first gear and the second gear are bevel gears.

[0012] Preferably, the end of the hub housing near the input component is movably connected to the axle via a bearing.

[0013] Preferably, it also includes a braking assembly connected to the hub housing and located on the side away from the input assembly.

[0014] Preferably, the braking assembly includes a brake end cap and a brake structure. The brake end cap is connected to the hub housing and is movably connected to the axle via a bearing. The brake structure is connected to the brake end cap.

[0015] Preferably, the braking assembly includes a disc brake end cap and a disc brake structure. The disc brake end cap is connected to the hub housing and is movably connected to the axle via a bearing. The disc brake structure is connected to the disc brake end cap.

[0016] The beneficial effects of this utility model are as follows: the bicycle hub structure can combine the hub shell with the transmission system, simplifying the structural form, effectively reducing the size and volume, making it more concealed and more beautiful, while the transmission method is simpler and more efficient, effectively improving the transmission efficiency.

[0017] Meanwhile, the bicycle hub structure, through its overall structural design, allows the rider to rotate the hub shell clockwise whether pedaling forward or backward, providing power to the bicycle and making riding more convenient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective structural diagram of the first embodiment of the present utility model;

[0020] Figure 2 This is a detailed structural diagram of the first embodiment of the present invention after the hub shell is hidden;

[0021] Figure 3 This is a top view of the first embodiment of the present invention after the toothed ring and hub shell are hidden.

[0022] Figure 4 This is a perspective structural diagram of the second embodiment of the present utility model;

[0023] Figure 5 This is a perspective structural diagram of the third embodiment of the present utility model;

[0024] Figure 6 This is a perspective structural diagram of the fourth embodiment of the present invention;

[0025] 1. The first gear in the diagram;

[0026] 2. Axis;

[0027] 3. Input components; 31. First claw stage; 32. Flywheel; 33. Second claw stage; 34. Pulley;

[0028] 4. Ratchet claw;

[0029] 5. Toothed ring;

[0030] 6. Hub shell;

[0031] 7. Transmission assembly; 71. Fixed base; 72. Second gear;

[0032] 8. Braking assembly; 81. Brake end cap; 82. Brake structure; 83. Disc brake end cap. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center," "side," "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and "side," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Reference Figures 1 to 6 This utility model provides a bicycle hub structure, including a first gear 1, a shaft 2, an input component 3, a ratchet pawl 4, a gear ring 5, a hub shell 6, and a transmission component 7;

[0037] Axle 2 is a fixed structure and will not rotate. Axle 2 has good structural strength and can support the overall structure of the bicycle hub.

[0038] Two first gears 1 are movably connected to the shaft 2 and are symmetrically arranged. The first gears 1 can rotate relative to the shaft 2. The two first gears 1 are symmetrically arranged so that the meshing surfaces of the two first gears 1 are arranged opposite each other.

[0039] The input component 3 is connected to one of the first gears 1, so the input component 3 can be located on one side of the bicycle hub structure. The input component 3 can move synchronously with the connected first gear 1. The input component 3 can be connected to the external input structure for transmission, thereby providing power to the bicycle hub structure. In this embodiment, the input component 3 preferably has two different structural forms, namely the flywheel structure and the pulley structure.

[0040] The transmission assembly 7 is connected to the shaft 2 and is respectively connected to the two first gears 1. When one of the first gears 1 rotates, it can drive the other first gear 1 to rotate in the opposite direction at the same time through the transmission assembly 7.

[0041] Each first gear 1 is connected to a ratchet pawl 4. Preferably, each first gear 1 is connected to several ratchet pawls 4, which are evenly distributed circumferentially. This arrangement can distribute the force evenly and improve the driving effect. The ratchet pawls 4 on the two first gears 1 form a layout that is opposite to each other on both sides. The rotation of each first gear 1 can drive the ratchet pawl 4 connected to it to rotate in the same direction. Each ratchet pawl 4 on each side is connected to a toothed ring 5 and they are combined to form a ratchet structure. The teeth of the ratchet pawl 4 and the toothed ring 5 on both sides are facing the same direction. Based on the characteristics of the ratchet structure, the toothed ring 5 and the corresponding ratchet pawl 4 can form a unidirectional driving effect. At the same time, since the two first gears 1 rotate in opposite directions, only one side of the ratchet structure on both sides can form a unidirectional drive. The toothed ring 5 can rotate with the corresponding first gear 1 and ratchet pawl 4, while the other side does not form a drive. The first gear 1 and ratchet pawl 4 rotate freely relative to the toothed ring 5.

[0042] Both toothed rings 5 ​​are connected to the hub shell 6. Preferably, the connection is fixed, so that the two toothed rings 5 ​​can move synchronously with the hub shell 6. At the same time, the hub shell 6 covers the outside of the first gear 1, ratchet pawl 4, toothed rings 5 ​​and transmission components 7. The hub shell 6 can protect the above structure and can also work with the sealing ring to achieve dust and water protection. Compared with the prior art, the bicycle hub structure in this embodiment can combine the hub shell 6 with the transmission system, simplifying the structure, effectively reducing the size and volume, making it more concealed and more beautiful. At the same time, the transmission method is simpler and more efficient, effectively improving the transmission efficiency.

[0043] The hub shell 6 is connected to the rear wheel of the bicycle, and the two can rotate synchronously.

[0044] In actual use, the external input structure of the bicycle hub can drive the flywheel or pulley of the input component 3 to rotate forward or in reverse, thus producing two different transmission forms.

[0045] When the flywheel or pulley rotates clockwise, it drives the first gear 1 connected to it to rotate clockwise synchronously. The ratchet pawl 4 and the toothed ring 5 on the first gear 1 connected to the flywheel or pulley form a one-way drive, and the toothed ring 5 on this side can rotate clockwise, thereby driving the hub shell 6 and the rear wheel to rotate clockwise. At the same time, under the transmission cooperation of the transmission component 7, the other first gear 1 rotates counterclockwise. The ratchet pawl 4 and the toothed ring 5 on this side do not form a drive, and the first gear 1 and the ratchet pawl 4 on this side rotate freely relative to the toothed ring 5. At this time, the toothed ring 5 on this side can rotate clockwise with the hub shell 6.

[0046] When the flywheel or pulley reverses, it is defined as a counterclockwise rotation, which can drive the first gear 1 connected to it to rotate counterclockwise synchronously. The ratchet pawl 4 and the toothed ring 5 on the first gear 1 connected to the flywheel or pulley do not form a drive. The first gear 1 and the ratchet pawl 4 on this side rotate freely relative to the toothed ring 5. At the same time, under the transmission cooperation of the transmission component 7, the other first gear 1 rotates clockwise. The ratchet pawl 4 and the toothed ring 5 on this side form a one-way drive. The toothed ring 5 on this side can follow and rotate clockwise, thereby driving the hub shell 6 and the rear wheel to rotate clockwise. During this process, the toothed ring 5 located on the flywheel or pulley side can follow the hub shell 6 to rotate clockwise.

[0047] With this design, whether the rider pedals forward or backward, the hub housing 6 can rotate clockwise, providing power to the bicycle and making riding more convenient.

[0048] Input component 3 has two different structural forms: a flywheel structure and a pulley structure, both of which are common structural forms in bicycles;

[0049] In the first form, the input component 3 includes a first pawl platform 31 and a flywheel 32. One end of the first pawl platform 31 is fixedly connected to the first gear 1, and the two can maintain synchronous movement. The flywheel 32 is sleeved on the other end of the first pawl platform 31, and the two can maintain synchronous movement. The flywheel 32 can be connected to an external chain drive. The driving force applied by the external chain can drive the flywheel 32 to rotate, thereby driving the first pawl platform 31 and the corresponding first gear 1 to rotate synchronously.

[0050] In the second form, the input component 3 includes a second pawl platform 33 and a pulley 34. One end of the second pawl platform 33 is fixedly connected to the first gear 1, and the two can maintain synchronous movement. The pulley 34 is sleeved on the other end of the second pawl platform 33, and the two can maintain synchronous movement. The pulley 34 can be connected to an external belt drive, and the driving force applied by the external belt can drive the pulley 34 to rotate, thereby driving the second pawl platform 33 and the corresponding first gear 1 to rotate synchronously.

[0051] The transmission assembly 7 includes a fixed base 71 and two second gears 72. The fixed base 71 is connected to the shaft 2, so the fixed base 71 can remain relatively stationary. The two second gears 72 are movably connected to the fixed base 71 through bearings and are symmetrically arranged, so the second gears 72 can rotate relative to the fixed base 71. Each second gear 72 simultaneously meshes with two first gears 1.

[0052] In the actual transmission process, after the first gear 1 connected to the input component 3 rotates, it can drive the two second gears 72 to rotate, and the two second gears 72 rotate in opposite directions, thereby driving the other first gear 1 to rotate in the opposite direction. The two first gears 1 rotate in opposite directions, so that only one side of the ratchet structure on both sides forms a unidirectional drive at any time. The toothed ring 5 on this side can follow the corresponding first gear 1 and ratchet pawl 4 to rotate, while the other side does not form a drive. The first gear 1 and ratchet pawl 4 on this side rotate freely relative to the toothed ring 5.

[0053] In this embodiment, both the first gear 1 and the second gear 72 are preferably bevel gears, which makes the structural layout more reasonable and effectively saves space.

[0054] The bicycle hub structure also includes a braking assembly 8, which is connected to the hub housing 6 and located on the side away from the input assembly 3. When the braking assembly 8 is activated, it can brake the hub housing 6, which is equivalent to braking the rear wheel.

[0055] Meanwhile, the input component 3 and the braking component 8 are located on opposite sides, which optimizes the overall structural form and makes the structural layout more reasonable.

[0056] In this embodiment, the braking assembly 8 preferably has two different structural forms, namely, a brake pad brake and a disc brake.

[0057] When using a brake clamp, the braking assembly 8 preferably includes a brake clamp end cover 81 and a brake clamp structure 82. The brake clamp end cover 81 is connected to the hub housing 6 and is movably connected to the axle 2 via a bearing. The brake clamp structure 82 is connected to the brake clamp end cover 81. The brake clamp end cover 81 facilitates the installation of the brake clamp structure 82, so that the brake clamp structure 82 can brake the hub housing 6 after it is activated. At the same time, since the end of the hub housing 6 near the input assembly 3 is movably connected to the axle 2 via a bearing, both ends of the hub housing 6 can be rotatably connected to the axle 2 via bearings, and the two will not rotate synchronously.

[0058] When disc brakes are used, the braking assembly 8 preferably includes a disc brake end cap 83 and a disc brake structure. The disc brake end cap 83 is connected to the hub housing 6 and is movably connected to the axle 2 via a bearing. The disc brake structure is connected to the disc brake end cap 83. The disc brake end cap 83 facilitates the installation of the disc brake structure, enabling the disc brake structure to brake the hub housing 6 after activation. At the same time, since the end of the hub housing 6 closest to the input assembly 3 is movably connected to the axle 2 via a bearing, both ends of the hub housing 6 can be rotatably connected to the axle 2 via bearings, and the two will not rotate synchronously.

[0059] In this embodiment, since the input component 3 preferably has two different structural forms and the braking component 8 preferably has two different structural forms, they can be combined to form four different combination effects, which are shown in the accompanying drawings.

[0060] In the appendix Figure 1-3 The diagram shows that the input component 3 is a combination of the first pawl platform 31 and the flywheel 32, and the braking component 8 is a combination of the disc brake end cap 83 and the disc brake structure.

[0061] In the appendix Figure 4 The diagram shows that the input component 3 is a combination of the first pawl platform 31 and the flywheel 32, and the braking component 8 is a combination of the brake end cover 81 and the brake structure 82; (See attached diagram) Figure 5 The diagram shows that the input component 3 is a combination of the second claw platform 33 and the pulley 34, and the braking component 8 is a combination of the disc brake end cap 83 and the disc brake structure.

[0062] In the appendix Figure 6 The diagram shows that the input component 3 is a combination of the second claw platform 33 and the pulley 34, and the braking component 8 is a combination of the brake end cover 81 and the brake structure 82.

[0063] The ability to flexibly select and apply the above structural forms according to actual usage needs enriches the choice of structural forms.

[0064] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A bicycle hub structure, characterized in that, The assembly includes a first gear (1), a shaft (2), an input component (3), a ratchet pawl (4), a gear ring (5), a hub shell (6), and a transmission component (7). Two first gears (1) are movably connected to the shaft (2) and are symmetrically arranged. The input component (3) is connected to one of the first gears (1). The transmission component (7) is connected to the shaft (2) and is connected to the two first gears (1) respectively, causing the two first gears (1) to rotate in opposite directions. Each first gear (1) is connected to a ratchet pawl (4). Each side of the ratchet pawl (4) is connected to a gear ring (5) and they are combined to form a ratchet structure. Both gear rings (5) are connected to the hub shell (6).

2. The bicycle hub structure according to claim 1, characterized in that, The number of ratchet pawls (4) connected to each of the first gears (1) is several, and the several ratchet pawls (4) are evenly distributed in the circumferential direction.

3. The bicycle hub structure according to claim 1, characterized in that, The input component (3) includes a first pawl platform (31) and a flywheel (32). One end of the first pawl platform (31) is fixedly connected to the first gear (1), and the flywheel (32) is sleeved on the other end of the first pawl platform (31).

4. The bicycle hub structure according to claim 1, characterized in that, The input component (3) includes a second pawl platform (33) and a pulley (34). One end of the second pawl platform (33) is fixedly connected to the first gear (1), and the pulley (34) is sleeved on the other end of the second pawl platform (33).

5. The bicycle hub structure according to claim 1, characterized in that, The transmission assembly (7) includes a fixed seat (71) and two second gears (72). The fixed seat (71) is connected to the shaft (2). The two second gears (72) are movably connected to the fixed seat (71) through bearings and are symmetrically arranged. Each second gear (72) meshes with the two first gears (1) at the same time.

6. The bicycle hub structure according to claim 5, characterized in that, Both the first gear (1) and the second gear (72) are bevel gears.

7. The bicycle hub structure according to claim 1, characterized in that, The hub shell (6) is movably connected to the axle (2) at one end near the input component (3) via a bearing.

8. The bicycle hub structure according to claim 1, characterized in that, It also includes a braking assembly (8), which is connected to the hub housing (6) and located on the side away from the input assembly (3).

9. The bicycle hub structure according to claim 8, characterized in that, The braking assembly (8) includes a brake end cap (81) and a brake structure (82). The brake end cap (81) is connected to the hub housing (6) and is movably connected to the axle (2) via a bearing. The brake structure (82) is connected to the brake end cap (81).

10. The bicycle hub structure according to claim 8, characterized in that, The braking assembly (8) includes a disc brake end cap (83) and a disc brake structure. The disc brake end cap (83) is connected to the hub housing (6) and is movably connected to the axle (2) via a bearing. The disc brake structure is connected to the disc brake end cap (83).

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