A rear wheel modular replaceable vehicle

Abstract

The application relates to the field of vehicles, in particular to a rear wheel modular replaceable vehicle. The vehicle comprises a vehicle frame, a cushion arranged on the top of the vehicle frame, a front wheel connected to the front part of the vehicle frame, and a rear wheel assembly a or a rear wheel assembly b detachably connected to the rear part of the vehicle frame; the rear wheel assembly a comprises a rear wheel a, a wheel frame a and a shock absorber a, the rear wheel a is rotationally arranged on the wheel frame a, the front end of the wheel frame a is rotationally connected with the vehicle frame, the top end of the wheel frame a is rotationally connected with one end of the shock absorber a, and the other end of the shock absorber a is rotationally connected with the vehicle frame; the rear wheel assembly b comprises a rear wheel b, a wheel frame b and a shock absorber b, two rear wheels b are arranged in parallel along the axial direction, the rear wheel b is rotationally arranged on the wheel frame b, the front end of the wheel frame b is rotationally connected with the vehicle frame, the top end of the wheel frame b is rotationally connected with one end of the shock absorber b, and the other end of the shock absorber b is rotationally connected with the vehicle frame. The vehicle can be switched into a two-wheeled vehicle or a three-wheeled vehicle with better running stability according to the use demand of a user, and the use cost is low.

Description

A vehicle with modular, replaceable rear wheels Technical Field

[0001] This invention relates to the field of vehicles, and in particular to a vehicle with modularly replaceable rear wheels. Background Technology

[0002] Traditional two-wheeled and three-wheeled vehicles are generally designed separately. As the names suggest, two-wheeled vehicles have only two wheels, while three-wheeled vehicles have three wheels. Two-wheeled vehicles take up less space and are more convenient for travel; they are the common bicycles, and are further divided into purely human-powered bicycles and electric bicycles. Three-wheeled vehicles offer better stability and are more convenient for carrying goods.

[0003] If users have both transportation and cargo-carrying needs, they can purchase two-wheeled and three-wheeled vehicles, which would lead to higher purchase costs and increased daily operating costs. Currently, there is no research on combining two-wheeled and three-wheeled vehicles. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a modularly replaceable rear wheel vehicle that can be switched between a two-wheeled vehicle and a three-wheeled vehicle with better driving stability according to the user's needs, thereby reducing the cost of use.

[0005] The technical solution of the present invention is a vehicle with a modular and replaceable rear wheel, including a frame, a seat cushion provided on the top of the frame, a front wheel connected to the front of the frame, and a rear wheel assembly a or a rear wheel assembly b detachably connected to the rear of the frame.

[0006] The rear wheel assembly a includes a rear wheel a, a wheel frame a and a shock absorber a. The rear wheel a is rotatably mounted on the wheel frame a. The front end of the wheel frame a is rotatably connected to the vehicle frame. The top end of the wheel frame a is rotatably connected to one end of the shock absorber a, and the other end of the shock absorber a is rotatably connected to the vehicle frame.

[0007] The rear wheel assembly b includes a rear wheel b, a wheel frame b, and a shock absorber b. Two rear wheels b are arranged side by side along the axial direction. The rear wheels b are rotatably mounted on the wheel frame b. The front end of the wheel frame b is rotatably connected to the vehicle frame. The top end of the wheel frame b is rotatably connected to one end of the shock absorber b. The other end of the shock absorber b is rotatably connected to the vehicle frame.

[0008] Preferably, the wheel frame b is equipped with a shelf.

[0009] Preferably, the shelf is equipped with a cargo box, the top of the cargo box is open, and multiple elastic elements a are connected between the bottom surface of the cargo box and the inner bottom surface of the shelf, and multiple elastic elements b are connected between the side surface of the cargo box and the inner side surface of the shelf.

[0010] Preferably, a top cover is rotatably connected to one end of the top of the shelf, and an elastic rope is connected to the end of the top cover away from the rotatable connection point with the shelf. A deformable limiting sleeve is connected to the end of the elastic rope away from the top cover, and the limiting sleeve has an arc-shaped groove. A limiting rod is provided on the shelf for the limiting sleeve to pass through the groove and fit. The limiting rod is a round rod.

[0011] Preferably, the outer circumferential surface of the limiting rod is provided with strip-shaped limiting teeth along the axial direction, the ends of the limiting teeth smoothly transition with the outer circumferential surface of the limiting rod, and multiple limiting teeth are evenly arranged around the central axis of the limiting rod in a fan-shaped area; the inner wall of the slot is provided with tooth grooves that are adapted to the limiting teeth.

[0012] Preferably, the bottom surface of the top cover is connected to multiple elastic elements c, and the end of the elastic element c away from the top cover is connected to a limiting plate; the bottom surface of the top cover is provided with a shock-absorbing pad that can be pressed against the top of the shelf.

[0013] Preferably, elastic element a, elastic element b, and elastic element c are all springs.

[0014] Preferably, the frame is equipped with a storage rack.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] This invention allows for the replacement of the rear wheel components according to user needs, creating a two-wheeled vehicle or a three-wheeled vehicle with improved driving stability, thereby reducing operating costs. A rack and cargo box can be installed on the three-wheeled vehicle for carrying goods. The top cover of the rack is secured by elastic ropes, limiting sleeves, and limiting rods, preventing the top cover from fully opening and ensuring that items placed in the cargo box do not fall out due to bumps, thus providing excellent restraint and preventing them from falling. Attached Figure Description

[0017] Figure 1 is a structural schematic diagram of Embodiment 1 of the present invention;

[0018] Figure 2 is a schematic diagram of the wheel frame a in Embodiment 1 of the present invention;

[0019] Figure 3 is a structural schematic diagram of Embodiment 2 of the present invention;

[0020] Figure 4 is a schematic diagram of the wheel frame b and the shelf in Embodiment 2 of the present invention;

[0021] Figure 5 is a partial structural cross-sectional view of the shelf in Embodiment 3 of the present invention;

[0022] Figure 6 is a schematic diagram of the principle structure of the limiting sleeve on the limiting rod in Embodiment 3 of the present invention.

[0023] Reference numerals: 1. Frame; 2. Front wheel; 31. Rear wheel a; 32. Rear wheel b; 41. Wheel frame a; 42. Wheel frame b; 51. Shock absorber a; 52. Shock absorber b; 6. Storage rack; 7. Seat cushion; 8. Shelf; 9. Cargo box; 91. Elastic component a; 92. Elastic component b; 10. Top cover; 11. Elastic component c; 12. Limiting plate; 13. Shock-absorbing pad; 14. Limiting rod; 141. Limiting tooth; 15. Elastic rope; 16. Limiting sleeve; 161. Tooth groove. Detailed Implementation

[0024] Example 1

[0025] As shown in Figures 1 and 2, the present invention proposes a modular and replaceable rear wheel vehicle, comprising a frame 1, a storage rack 6 on the frame 1 for convenient placement of personal items such as water bottles and umbrellas, a seat cushion 7 on the top of the frame 1, a front wheel 2 connected to the front of the frame 1, and a rear wheel assembly a detachably connected to the rear of the frame 1. The rear wheel assembly a includes a rear wheel a31, a wheel frame a41, and a shock absorber a51. The rear wheel a31 is rotatably mounted on the wheel frame a41, the front end of the wheel frame a41 is rotatably connected to the frame 1, the top end of the wheel frame a41 is rotatably connected to one end of the shock absorber a51, and the other end of the shock absorber a51 is rotatably connected to the frame 1.

[0026] In this embodiment, the shock absorber b52 can dampen vibrations when the rear wheel a31 encounters bumps, thereby improving the user's riding comfort. The vehicle in this embodiment has one front wheel 2 and one rear wheel a31, forming a two-wheeled vehicle that allows for convenient riding.

[0027] Example 2

[0028] As shown in Figures 3 and 4, this invention proposes a modular, replaceable rear wheel vehicle. Compared to Embodiment 1, in this embodiment, the rear wheel assembly b is detachably connected to the rear of the frame 1. The rear wheel assembly b includes a rear wheel b32, a wheel frame b42, and a shock absorber b52. Two rear wheels b32 are arranged side-by-side along the axial direction. The rear wheels b32 are rotatably mounted on the wheel frame b42. The front end of the wheel frame b42 is rotatably connected to the frame 1, and the top end of the wheel frame b42 is rotatably connected to one end of the shock absorber b52. The other end of the shock absorber b52 is rotatably connected to the frame 1. The shock absorber b52 can absorb shocks when the rear wheel b32 encounters bumps and vibrations, thereby improving the user's riding comfort. The vehicle in this embodiment has one front wheel 2 and two rear wheels b32, forming a tricycle, which has better stability when driving.

[0029] Example 3

[0030] As shown in Figures 5 and 6, this invention proposes a modular, replaceable rear wheel vehicle. Compared to Embodiment 2, in this embodiment, a rack 8 is provided on the wheel frame b42. A cargo box 9 is provided inside the rack 8. The cargo box 9 has an opening at the top. Multiple elastic elements a91 are connected between the bottom surface of the cargo box 9 and the inner bottom surface of the rack 8. Multiple elastic elements b92 are connected between the side surface of the cargo box 9 and the inner side surface of the rack 8. The elastic elements a91 and b92 can effectively cushion the vibration of the cargo box 9, preventing the items placed inside from being damaged by the impact of vehicle bumps.

[0031] A top cover 10 is rotatably connected to one end of the top of the shelf 8. An elastic rope 15 is connected to the end of the top cover 10 away from the rotatable connection point with the shelf 8. A deformable limiting sleeve 16 is connected to the end of the elastic rope 15 away from the top cover 10. The limiting sleeve 16 has an arc-shaped groove. A limiting rod 14, which is a round rod, is provided on the shelf 8 to allow the limiting sleeve 16 to pass through the groove and fit. After the top cover 10 is closed, the elastic rope 15 is pulled, and the limiting sleeve 16 is fitted onto the limiting rod 14 by its own deformation ability, thereby preventing the limiting sleeve 16 from falling off the limiting rod 14. When the vehicle encounters bumps and vibrations, the top cover 10 will vibrate. The elastic rope 15 can buffer the vibration of the top cover 10, making it difficult for the top cover 10 to pull the limiting sleeve 16 off the limiting rod 14, and the top cover 10 can still be effectively limited. When it is necessary to open the lid, pull the limiting sleeve 16 off the limiting rod 14, flip the top cover 10, and you can take out the items placed inside the cargo box 9.

[0032] A strip-shaped limiting tooth 141 is axially arranged on the outer circumferential surface of the limiting rod 14. The end of the limiting tooth 141 smoothly transitions with the outer circumferential surface of the limiting rod 14. Multiple limiting teeth 141 are evenly arranged in a fan-shaped area around the central axis of the limiting rod 14. The inner wall of the slot is provided with a tooth groove 161 that matches the limiting tooth 141. In use, first pull the elastic rope 15 to lock the limiting sleeve 16 onto the smooth area of ​​the limiting rod 14. Then slide it towards the limiting tooth 141 and lock it onto the limiting tooth 141 through the tooth groove 161. The limiting rod 14 and the limiting tooth 141 together limit the limiting sleeve 16. When the vehicle encounters bumps and vibrations, the top cover 10 vibrates. The elastic rope 15 buffers the vibration, and the limiting sleeve 16 will not slide out of the area where the limiting tooth 141 is located. The limiting sleeve 16 can be more stably limited, so that the top cover 10 will not be completely opened.

[0033] The bottom surface of the top cover 10 is connected to multiple elastic elements c11. One end of each elastic element c11, away from the top cover 10, is connected to a limiting plate 12. The limiting plate 12 can limit the items placed inside the cargo box 9 from above, preventing them from falling out. When no items are placed in the cargo box 9, the limiting plate 12 is located inside the cargo box 9. When items are placed in the cargo box 9, the limiting plate 12 presses against the items, and can be located inside or above the cargo box 9, ensuring that the items remain inside the cargo box 9 and are not easily dropped. The bottom surface of the top cover 10 is provided with shock-absorbing pads 13 that can press firmly against the top of the shelf 8. When encountering bumpy roads, the top cover 10 may vibrate, and the shock-absorbing pads 13 can buffer the impact of the top cover 10 on the shelf 8. Elastic elements a91, b92, and c11 are all springs. Springs are easy to connect and can effectively buffer vibrations.

[0034] This invention allows for the replacement of the rear wheel components according to user needs, thus creating a two-wheeled vehicle or a tricycle with improved driving stability, thereby reducing operating costs. A rack 8 and a cargo box 9 can be installed on the tricycle for carrying goods. The top cover 10 of the rack 8 is limited by an elastic rope 15, a limiting sleeve 16, and a limiting rod 14, preventing the top cover 10 from fully opening and ensuring that items placed in the cargo box 9 are not thrown out due to bumps, effectively preventing them from falling.

[0035] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A modularly replaceable rear wheel vehicle, comprising a frame (1), a seat (7) disposed on the top of the frame (1), and a front wheel (2) connected to the front of the frame (1), characterized in that, The rear of the frame (1) is detachably connected to a rear wheel assembly b; the rear wheel assembly b includes a rear wheel b (32), a wheel frame b (42) and a shock absorber b (52). There are two rear wheels b (32) arranged side by side along the axial direction. The rear wheels b (32) are rotatably mounted on the wheel frame b (42). The front end of the wheel frame b (42) is rotatably connected to the frame (1). The top end of the wheel frame b (42) is rotatably connected to one end of the shock absorber b (52). The other end of the shock absorber b (52) is rotatably connected to the frame (1). A shelf (8) is provided on the wheel frame b (42). A cargo box (9) is provided inside the shelf (8). The top of the cargo box (9) is open. Multiple elastic elements a (91) are connected between the bottom surface of the cargo box (9) and the inner bottom surface of the shelf (8). Multiple elastic elements b (92) are connected between the side surface of the cargo box (9) and the inner side surface of the shelf (8). The top of the shelf (8) is rotatably connected to a top cover (10). The end of the top cover (10) away from the rotatable connection with the shelf (8) is connected to an elastic rope (15). The end of the elastic rope (15) away from the top cover (10) is connected to a deformable limiting sleeve (16). The limiting sleeve (16) has an arc-shaped groove. The shelf (8) is provided with a limiting rod (14) for the limiting sleeve (16) to pass through the groove and be fitted. The limiting rod (14) is a round rod. The outer circumferential surface of the limiting rod (14) is provided with strip-shaped limiting teeth (141) along the axial direction. The end of the limiting teeth (141) smoothly transitions with the outer circumferential surface of the limiting rod (14). Multiple limiting teeth (141) are evenly arranged around the central axis of the limiting rod (14) in a fan-shaped area. The inner wall of the groove is provided with a tooth groove (161) that matches the limiting teeth (141).

2. The vehicle with modularly replaceable rear wheels according to claim 1, characterized in that, The bottom surface of the top cover (10) is connected to multiple elastic elements c (11), and the end of the elastic element c (11) away from the top cover (10) is connected to a limiting plate (12); the bottom surface of the top cover (10) is provided with a shock-absorbing pad (13) that can be pressed against the top of the shelf (8).

3. A vehicle with modularly replaceable rear wheels according to claim 2, characterized in that, Elastic element a (91), elastic element b (92) and elastic element c (11) are all springs.

4. A vehicle with modularly replaceable rear wheels according to claim 1, characterized in that, A storage rack (6) is provided on the frame (1).

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