Spacing-adjustable bicycle

Abstract

The utility model discloses a distance-adjustable bicycle, which relates to the technical field of rehabilitation equipment and comprises a bicycle body and pedals mounted on two sides of the bicycle body through a connecting shaft, and a moving component for driving the pedals to be close to or far away from the symmetric center of the bicycle body is arranged in the bicycle body. A rotating assembly used for rotating the angle of the connecting shaft is arranged on the pedal, a cavity is formed in the bicycle body, a linkage wheel is rotationally connected into the cavity, a hollow shaft is fixedly connected to the linkage wheel, and a transmission shaft is installed in the hollow shaft; on the basis that the distance between the pedals and the angle of the pedals relative to the bicycle body are adjusted, a user can adjust the pedal to the position most suitable for himself or herself so as to adapt to the physical states of different users, and the pedals can be folded so that lifting and carrying can be convenient.

Description

Technical Field

[0001] This utility model relates to the field of rehabilitation equipment technology, and in particular to a bicycle with adjustable spacing. Background Technology

[0002] Rehabilitation generally refers to the use of exercise, therapy, and various physical methods or equipment to help postoperative patients regain their physical fitness, and to train and restore limb strength while protecting the injured area. The bicycle, as a common rehabilitation device, is mainly used to help patients train and restore lower limb strength, helping them regain the ability to walk.

[0003] Users can overcome resistance and exercise their lower limb muscles by stepping on the pedals, allowing the body to gradually recover its functions. However, due to differences in body size among users, there are different requirements for the spacing of the pedals.

[0004] The patent CN221385068U, entitled "A Fatigue-Resistant Rehabilitation Bike", proposes a rehabilitation bike that can adjust the pedal spacing. However, this bike can only adjust the middle spacing and cannot adjust the pedal angle. When the user pedals, the angle of the foot on the pedal cannot be adjusted. For some patients with foot twisting, the inability to twist the pedal will cause discomfort in foot placement. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this utility model is to provide a bicycle with adjustable spacing, which can adjust the spacing between the pedals and also adjust the angle of the pedals.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adjustable-pitch bicycle includes a bicycle body and pedals mounted on both sides of the bicycle body via connecting shafts. The bicycle body has a moving component that moves the pedals closer to or away from the center of symmetry of the bicycle body, and the pedals have a rotating component for rotating the angle of the connecting shaft.

[0008] Furthermore, the bicycle body has a cavity, a linkage wheel is rotatably connected inside the cavity, a hollow shaft is fixedly connected to the linkage wheel, and a drive shaft is installed inside the hollow shaft.

[0009] Furthermore, the hollow shaft inner wall is provided with at least one locking block, and the transmission shaft is provided with a slot for sliding connection of the locking block.

[0010] Furthermore, the movable component includes a lead screw disposed within the cavity, a movable bushing threadedly connected to the lead screw, and the movable bushing being rotatably connected to the transmission shaft.

[0011] Furthermore, the rotating assembly includes a connector fixedly connected to the free end of the drive shaft, and the connecting shaft is connected to the connector via a rotating block.

[0012] Furthermore, the bicycle body is equipped with a transmission motor for driving the lead screw to rotate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention allows users to adjust the position to their liking by adjusting the spacing between the pedals and the angle of the pedals relative to the bicycle body, thus adapting to different users' physical conditions. The pedals can also be folded for easy lifting and carrying. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the pedal of this utility model after it is opened;

[0017] Figure 3 This is a top view of the structure of this utility model;

[0018] Figure 4 This is a schematic cross-sectional view of the internal structure of this utility model;

[0019] Figure 5 This is a partial structural schematic diagram of the present invention;

[0020] Figure 6 This is a schematic diagram of the connecting block structure of this utility model;

[0021] In the diagram: 11. Bicycle body; 12. Pedal; 13. Rotating assembly; 14. Connecting block; 15. Fixing block; 16. Connecting shaft; 161. Connector; 17. Cavity; 18. Moving bushing; 19. Drive shaft; 20. Moving assembly; 21. Locking block; 22. Locking slot; 23. Linkage wheel; 24. Spring clip; 25. Hollow shaft; 26. Lead screw. Detailed Implementation

[0022] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Please see Figures 1 to 6 This embodiment provides a bicycle with adjustable spacing, including a bicycle body 11 and pedals 12 mounted on both sides of the bicycle body 11 via a connecting shaft 16. The bicycle body 11 is provided with a moving component 20 that drives the pedals 12 to move closer to or away from the center of symmetry of the bicycle body 11. The pedals 12 are provided with a rotating component 13 for rotating the angle of the connecting shaft 16.

[0024] The bicycle body 11 has a cavity 17 inside, a linkage wheel 23 is rotatably connected inside the cavity 17, a hollow shaft 25 is fixedly connected to the linkage wheel 23, and a drive shaft 19 is installed inside the hollow shaft 25.

[0025] The hollow shaft 25 has at least one locking block 21 on its inner wall, and the transmission shaft 19 has a slot 22 for sliding connection of the locking block 21.

[0026] The connection between the internal linkage wheel 23 and the hollow shaft 25 and the transmission shaft 19 allows the locking block 21 to move within the locking slot 22, maintaining the transmission effect even after the transmission shaft 19 is pulled out a certain distance.

[0027] The bicycle body 11 is also provided with a fixing block 15 for supporting the drive shaft 19, and the middle part of the drive shaft 19 is rotatably connected to the fixing block 15.

[0028] The moving component 20 includes a lead screw 26 disposed in the cavity 17, a movable bushing 18 threadedly connected to the lead screw 26, the movable bushing 18 being rotatably connected to the drive shaft 19, and a drive motor for driving the lead screw 26 to rotate is provided in the bicycle body 11.

[0029] By starting the drive motor, the lead screw 26 can be rotated, which in turn drives the movable bushing 18 to move the drive shaft 19 closer to or further away from the center of symmetry of the linkage wheel 23. The movable bushing 18 is threaded at the connection with the lead screw 26 and rotatably connected at the connection with the drive shaft 19, so that the inner side of the drive shaft 19 can still be driven to move after being engaged with the movable bushing 18.

[0030] The rotating assembly 13 includes a connector 161 fixedly connected to the free end of the drive shaft 19, and the connecting shaft 16 is connected to the connector 161 via a rotating block 14.

[0031] The rotating block 14 is fixedly connected to the free end of the connecting shaft 16. The rotating block 14 is provided with a spring clip for clamping the connector 161, and the rotating block 14 is provided with a groove for locking the connector 161.

[0032] When angle adjustment is required, the spring clip 24 inside the rotating block 14 can be pulled open to loosen the clamping of the connector 161. Then, the connecting shaft 16 can be rotated to adjust its position, and then fixed in place by the rotating block 14.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A bicycle with adjustable spacing, comprising a bicycle body (11) and pedals (12) mounted on both sides of the bicycle body (11) via connecting shafts (16), characterized in that: The bicycle body (11) is provided with a lead screw (26) and a moving bushing (18) that drive the pedal (12) to move closer to or away from the center of symmetry of the bicycle body (11). The lead screw (26) and the moving bushing (18) together constitute a moving component (20). The pedal (12) is provided with a connector (161) and a rotating block (14) for rotating the angle of the connecting shaft (16). The connector (161) and the rotating block (14) together constitute a rotating component (13). The bicycle body (11) has a cavity (17) inside, and a linkage wheel (23) is rotatably connected inside the cavity (17). A hollow shaft (25) is fixedly connected to the linkage wheel (23), and a drive shaft (19) is installed inside the hollow shaft (25).

2. The adjustable-spacing bicycle according to claim 1, characterized in that, The hollow shaft (25) has at least one locking block (21) on its inner wall, and the drive shaft (19) has a slot (22) for the locking block (21) to slide.

3. The adjustable-spacing bicycle according to claim 1, characterized in that, The lead screw (26) is disposed in the cavity (17), the lead screw (26) is threadedly connected to the movable bushing (18), and the movable bushing (18) is rotatably connected to the transmission shaft (19).

4. The adjustable-spacing bicycle according to claim 1, characterized in that, The connector (161) is fixedly connected to the free end of the drive shaft (19), and the connecting shaft (16) is connected to the connector (161) through the rotating block (14).

5. The adjustable-spacing bicycle according to claim 1, characterized in that, The bicycle body (11) is equipped with a transmission motor for driving the lead screw (26) to rotate.

Images