Detachable four-wheeler

Abstract

The utility model relates to the technical field of auxiliary walking vehicles, and particularly discloses a detachable four-wheeler which comprises a frame, the frame comprises at least two groups of first supporting rods and second supporting rods, and handrails are arranged at the upper ends of the first supporting rods; one end of the second supporting rod is hinged to the first supporting rod and is of a forked structure. A folding assembly is arranged between the first supporting rod and the second supporting rod; the folding assembly comprises a first folding strip and a second folding strip, one end of the first folding strip and one end of the second folding strip are hinged to each other, one end of the first folding strip is rotationally connected with the first supporting rod, one end of the second folding strip is rotationally connected with the second supporting rod, and a lifting rod is arranged at the hinged position of the first folding strip and the second folding strip; when the first folding strip and the second folding strip are folded, the lifting rod is lifted upwards to drive the first supporting rod and the second supporting rod to be folded and drawn close. The folding table has the advantages of being convenient to disassemble and assemble, small in occupied space for storage and beneficial to packaging and transportation.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary walking vehicle technology, and more specifically, to a detachable four-wheeled vehicle. Background Technology

[0002] Four-wheeled vehicles are assistive tools used to aid in the rehabilitation of users with leg disabilities. When a person's legs are injured, their support is insufficient and unstable, making them prone to falls during movement. Four-wheeled vehicles are typically used to provide assistance. They are devices that can effectively prevent, compensate for, reduce, or replace the weakening or loss of bodily functions caused by disability or disease. These devices primarily help patients or the elderly with limited walking ability to move, improving their independence and quality of life; they are classified as mobility aids.

[0003] Existing four-wheeled vehicles are bulky, requiring significant space for packaging and assembly, making them inconvenient for transport and resulting in high transportation costs. Therefore, a detachable four-wheeled vehicle is designed to address this issue. Utility Model Content

[0004] The purpose of this invention is to provide a detachable four-wheeled vehicle that is easy to disassemble and assemble, and is beneficial for packaging and transportation.

[0005] This utility model is achieved through the following technical solution: a detachable four-wheeled vehicle, including a frame, the frame including at least two sets of first support rods and second support rods, the upper end of the first support rod is provided with a handle; one end of the second support rod is hinged to the first support rod and has a forked structure; a folding assembly is provided between the first support rod and the second support rod; the folding assembly includes a first folding strip and a second folding strip hinged to each other at one end, one end of the first folding strip is rotatably connected to the first support rod, one end of the second folding strip is rotatably connected to the second support rod, and a lifting rod is provided at the hinge point of the first folding strip and the second folding strip; when the first folding strip and the second folding strip are folded up, the lifting rod is lifted to drive the first support rod and the second support rod to fold and close together.

[0006] Furthermore, at least one connecting pipe is connected between adjacent first support rods, and at least one reinforcing rod is provided between adjacent second support rods; one end of the first folding strip is connected to the connecting pipe, and the second folding strip is connected to the reinforcing rod.

[0007] Furthermore, the first folding strip is provided with a limiting fold edge, so that when the first folding strip and the second folding strip are unfolded, the second folding strip is in contact with the limiting fold edge.

[0008] Furthermore, it also includes a seat cushion, which is mounted on the connecting tube and the reinforcing rod.

[0009] Furthermore, it also includes a backrest plate disposed above the seat cushion, the backrest plate being installed between the two first support rods.

[0010] Furthermore, the two ends of the back plate are sleeved on the first support rod, and the first support rod is evenly spaced with a plurality of adjustment and mounting holes for connecting the back plates.

[0011] Furthermore, the bottom of the first support rod and the second support rod are provided with rollers, and the lower end of the second support rod is rotatably connected to a brake pressure plate, one end of which is connected to a brake cable; a brake grip connected to the brake cable is installed on the armrest.

[0012] Furthermore, the lifting rod has a U-shaped structure.

[0013] Furthermore, the first support rod and the second support rod adopt a spliced ​​structure.

[0014] The technical solution of this utility model has at least the following advantages and beneficial effects: By changing the frame to a multi-link hinge, this utility model makes it easier to fold and assemble, easier to disassemble, reduces the volume it occupies, reduces the size of its packaging box, makes transportation more convenient, and lowers transportation costs. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the detachable four-wheeled vehicle of this utility model;

[0016] Figure 2 This is a side view of the detachable four-wheeled vehicle of this utility model;

[0017] Figure 3 This is a schematic diagram of the stacking component in this utility model.

[0018] Reference numerals: 1-Frame, 11-First support rod, 111-Adjustment mounting hole, 12-Second support rod, 2-Armrest, 3-Folding assembly, 31-First folding strip, 311-Limiting fold, 32-Second folding strip, 33-Lifting rod, 4-Connecting tube, 5-Reinforcing rod, 6-Seat cushion, 7-Backrest, 8-Roller, 9-Grip, 91-Brake cable, 92-Brake pressure plate. Detailed Implementation

[0019] The following description, in conjunction with specific embodiments, provides further details. Figures 1-3As shown, this embodiment is a detachable four-wheeled vehicle, including a frame 1. The frame 1 includes at least two sets of first support rods 11 and second support rods 12. The upper end of the first support rod 11 is provided with a handle 2. The upper end of the second support rod 12 is hinged to the middle section of the first support rod 11 and has a forked structure. A folding assembly 3 is provided between the first support rod 11 and the second support rod 12. The folding assembly 3 includes a first folding strip 31 and a second folding strip 32 that are hinged to each other at one end. One end of the first folding strip 31 is rotatably connected to the first support rod 11, and one end of the second folding strip 32 is rotatably connected to the second support rod 12. A lifting rod 33 is provided at the junction of the first folding strip 31 and the second folding strip 32. When the first folding strip 31 and the second folding strip 32 are folded up, the lifting rod 33 is lifted, and this lifting rod serves as the first folding rod. The hinge shafts of the first folding bar 31 and the second folding bar 32 are horizontally folded together. Specifically, when unfolded, the first support rod 11, the second support rod 12, the first folding bar 31, and the second folding bar 32 form a triangular support structure. When the user is standing, the handrail 2 can be used as a mobility aid, similar to a cane. The lifting rod 33 rotates to be in contact with the first support rod 11 or the second support rod 12. When the four-wheeled vehicle needs to be packed, the lifting rod 33 is lifted vertically, and the hinge joints of the first folding bar 31 and the second folding bar 32 rotate to bring them together. The second support rod 12 and the first support rod 11 also fold together, reducing the space occupied and thus requiring less packaging volume, which is more conducive to transportation and handling.

[0020] like Figure 3 As shown, in this embodiment, at least one connecting pipe 4 connects adjacent first support rods 11, and at least one reinforcing rod 5 is provided between adjacent second support rods 12; one end of the first folding strip 31 is connected to the connecting pipe 4, and the second folding strip 32 is connected to the reinforcing rod 5; specifically, the connecting pipe 4 and the reinforcing rod 5 are used to connect to the first support rod 11 and the second support rod 12 respectively, and one end of the lifting rod 33 can serve as the hinge shaft between the first folding strip 31 and the second folding strip 32. When the lifting rod 33 rotates, one end of it abuts against the surface of the reinforcing rod 5 to prevent the second support rod 12 and the first support rod 11 from coming together, so that the frame 1 maintains a triangular support state.

[0021] like Figure 3 As shown, in order to avoid excessive rotation between the second folding strip 32 and the first folding strip 31, the first folding strip 31 is provided with a limiting fold edge 311, so that when the first folding strip 31 and the second folding strip 32 are unfolded, the second folding strip 32 is in contact with the limiting fold edge 311, that is, the first folding strip 31 and the second folding strip 32 are on approximately a straight line.

[0022] like Figure 1As shown, this embodiment also includes a seat cushion 6, which is installed on the connecting tube 4 and the reinforcing rod 5. Specifically, by adding the seat cushion 6, the user can sit on the seat cushion 6 to rest when walking is tiring. The first folding bar 31, the second folding bar 32 and the lifting rod 33 are hidden under the seat cushion 6. The lifting rod 33 is rotated to a position close to the first folding bar 31 and the second folding bar 32, making the structure of the frame 1 more concise.

[0023] like Figure 1 As shown, in order to improve the user's comfort, this embodiment also includes a backrest 7 located above the seat cushion 6, which is installed between the two first support rods 11.

[0024] like Figure 1 As shown, the two ends of the backrest 7 are sleeved on the first support rod 11, and the first support rod 11 has a number of evenly spaced adjustment mounting holes 111 for the backrest 7 to connect; specifically, the two ends of the backrest 7 have collars that slide on the first support rod 11, and the position of the backrest 7 can be adjusted according to the user's height so that the collars are aligned with the corresponding adjustment mounting holes 111 for locking.

[0025] In this embodiment, the bottom of the first support rod 11 and the second support rod 12 are provided with rollers 8, and the lower end of the second support rod 12 is rotatably connected to a brake pressure plate 92. One end of the brake pressure plate 92 is connected to a brake cable 91. A brake handle 9 connected to the brake cable 91 is installed on the handrail 2. Specifically, when a person holds the handrail 2, they can also contact the brake handle 9, similar to a bicycle. When the four-wheeled vehicle is moved, gripping the brake handle 9 can pull the brake cable 91, causing the brake pressure plate 92 to flip and press against the surface of the roller 8, preventing the roller 8 from moving. For example, when the user is using it on a downhill road, the wheel will roll and may cause the user to fall. However, when the user holds the handrail 2 and grips the handle 9, the roller 8 can be prevented from rotating, thus improving the safety of the four-wheeled vehicle.

[0026] like Figure 3 As shown, the lifting rod 33 has a U-shaped structure. One end of the lifting rod 33 with this U-shaped structure is used as a hinge axis for the first folding bar 31 and the second folding bar 32. When the lifting rod 33 is folded up and hidden under the seat cushion, the other end of the lifting rod is close to the reinforcing rod 5.

[0027] like Figure 2 As shown, in order to further reduce the packaging volume and pack the parts of the four-wheeled vehicle into a smaller packaging box, the first support rod 11 and the second support rod 12 adopt a splicing structure. The first support rod 11 is a splicing of multiple pipe sections, and the roller 8 is connected and fixed to one of the pipe sections.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A collapsible four-wheeled vehicle comprising a frame (1), characterised in that: The frame (1) comprises at least two groups of first support rods (11) and second support rods (12), the upper end of the first support rod (11) is provided with an armrest (2); One end of the second support rod (12) is hinged to the first support rod (11) and has a forked structure; A folding assembly (3) is arranged between the first support rod (11) and the second support rod (12); The folding assembly (3) comprises a first folding strip (31) and a second folding strip (32) hinged to each other at one end, one end of the first folding strip (31) is rotatably connected to the first support rod (11), one end of the second folding strip (32) is rotatably connected to the second support rod (12), and a lifting rod (33) is arranged at the hinge between the first folding strip (31) and the second folding strip (32); When the first folding strip (31) and the second folding strip (32) are folded, the lifting rod (33) is lifted to drive the first support rod (11) and the second support rod (12) to fold close.

2. Collapsible quadricycle according to claim 1, characterized in that: At least one connecting pipe (4) is connected between adjacent first support rods (11), and at least one reinforcing rod (5) is arranged between adjacent second support rods (12); One end of the first folding strip (31) is connected to the connecting pipe (4), and the second folding strip (32) is connected to the reinforcing rod (5).

3. The collapsible four-wheeler of claim 2, wherein: The first folding strip (31) is provided with a limiting folding edge (311), so that when the first folding strip (31) and the second folding strip (32) are unfolded, the second folding strip (32) is attached to the limiting folding edge (311).

4. Collapsible quadricycle according to any of claims 2-3, characterized in that: A seat cushion (6) is further included, which is mounted on the connecting pipe (4) and the reinforcing rod (5).

5. The collapsible four-wheeler of claim 4, wherein: A backrest (7) is further included above the seat cushion (6), which is mounted between the two first support rods (11).

6. The collapsible four-wheeler of claim 5, wherein: Both ends of the backrest (7) are sleeved on the first support rod (11), and a plurality of adjusting mounting holes (111) for the backrest (7) are uniformly arranged on the first support rod (11).

7. The collapsible four-wheeler of claim 1, wherein: The bottom of the first support rod (11) and the second support rod (12) is provided with a roller (8), and the lower end of the second support rod (12) is rotatably connected with a brake pressing plate (92), one end of the brake pressing plate (92) is connected with a brake wire (91); The armrest (2) is provided with a brake handle (9) connected with the brake wire (91).

8. The collapsible four-wheeler of claim 1, wherein: The lifting rod (33) has a U-shaped structure.

9. The collapsible four-wheeler of claim 1, wherein: The first support rod (11) and the second support rod (12) adopt a splicing structure.

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