Dual-purpose four-wheeler structure
By designing adjustable armrests and backrest components, the four-wheeled vehicle achieves versatility, solving the problem of the single use of existing four-wheeled vehicles, reducing user operating costs and improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-31
AI Technical Summary
Existing four-wheeled vehicles have a single purpose, and users need to purchase both a walker and a push chair, which increases the cost of use and results in a poor user experience.
Design a dual-purpose four-wheeled vehicle structure that includes a foldable seat assembly and an adjustable armrest assembly, which can be converted into a walker or a push chair. By adjusting the angle and position of the armrest and backrest assemblies, different usage needs can be met.
It achieves the versatility of a four-wheeled vehicle, reduces user costs, enhances user experience, and meets the dual needs of a walker and a push chair.
Smart Images
Figure CN224056273U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of four-wheeled vehicle technology, and in particular to a dual-purpose four-wheeled vehicle structure. Background Technology
[0002] In related technologies, four-wheeled vehicles, such as walkers or push chairs, are widely used in homes, hospitals, and rehabilitation facilities. For people with mobility impairments, the elderly, the frail, or lower limb disabilities, four-wheeled vehicles can help them walk or assist them with rehabilitation training.
[0003] However, existing four-wheeled vehicles have limited uses; for example, they can only be used as walking aids or push chairs. This limited functionality leads to a poor user experience. If a user needs to use both a walking aid and a push chair simultaneously, they must purchase both products to meet their needs, thus increasing their operating costs. The main difference between existing walking aids and push chairs lies in the way the armrests are positioned, resulting in differences in their uses and applicable scope.
[0004] Therefore, it is necessary to improve existing technologies. Utility Model Content
[0005] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a dual-purpose four-wheeled vehicle structure that can be used as a walking aid or as a push chair, thus meeting the user's two usage needs.
[0006] The above objective is achieved through the following technical solution:
[0007] A dual-purpose four-wheeled vehicle structure includes armrest assemblies on both sides, a foldable seat assembly, and a backrest assembly. The two sides of the seat assembly are respectively connected to the armrest assembly, and the two sides of the backrest assembly are respectively rotatably connected to the top of the armrest assembly. The armrest assembly includes at least a rear armrest tube arranged in the vertical direction, and the tilt angle of the rear armrest tube is adjustable.
[0008] In some embodiments, the handrail assembly further includes a C-shaped tube and a front handrail tube, wherein the front side of the C-shaped tube is connected to the front handrail tube, and the rear side of the C-shaped tube is rotatably connected to the rear handrail tube.
[0009] In some embodiments, a front caster is provided at the bottom of the front armrest tube, a detachable connecting tube is provided at the lower end of the C-shaped tube, and a rear caster is provided at the bottom of the connecting tube.
[0010] In some embodiments, a connecting member is provided on the front armrest tube, and a connecting groove is provided on the top of the foot pedal assembly from bottom to top, wherein the connecting groove and the connecting member are detachably connected.
[0011] In some embodiments, a movable adjusting tube is provided at the upper end of the C-shaped tube, the end of the adjusting tube is rotatably connected to the rear handrail tube, and the bottom of the rear handrail tube is rotatably connected to the lower side of the C-shaped tube.
[0012] In some embodiments, the device further includes screws, a plurality of spaced first connecting holes on the C-shaped tube, and a second connecting hole on the adjusting tube, wherein the screws connect the first connecting holes and the second connecting holes at corresponding positions together.
[0013] In some embodiments, a first connecting block is provided on the rear armrest tube, and the end of the adjusting tube is inserted into the first connecting block, and the first connecting block and the adjusting tube are rotatably connected together by screws.
[0014] In some embodiments, a second connecting block is provided at the bottom of the rear armrest tube, and the lower side of the C-shaped tube is inserted into the second connecting block. The second connecting block and the lower side of the C-shaped tube are rotatably connected together by screws.
[0015] In some embodiments, the backrest assembly may be arranged facing forward or backward, and a detachable foot pedal assembly is provided at the front end of the armrest assembly.
[0016] In some embodiments, a first rotating connector is provided on the top of the armrest assembly, and the backrest assembly includes a backrest and second rotating connectors provided on both sides of the backrest. The first rotating connector and the second rotating connector are rotatably connected together by a rotating shaft.
[0017] Compared with the prior art, the present invention has at least the following beneficial effects:
[0018] 1. This utility model provides a dual-purpose four-wheeled vehicle structure, which can be used as a walking aid or as a push chair, thus meeting the user's two usage needs. Attached Figure Description
[0019] Figure 1 This is a three-dimensional schematic diagram of the four-wheeled vehicle in the push-chair state in the embodiment;
[0020] Figure 2 yes Figure 1 A magnified view of part A in the middle;
[0021] Figure 3 yes Figure 1 A magnified view of part B in the middle section;
[0022] Figure 4 This is a partial exploded view of the four-wheeled vehicle in the push-chair state in the embodiment;
[0023] Figure 5 yes Figure 4 A magnified view of part C in the middle;
[0024] Figure 6 yes Figure 4 A magnified view of part D in the middle;
[0025] Figure 7 This is an exploded view of the armrest assembly in the embodiment;
[0026] Figure 8 This is a three-dimensional schematic diagram of the four-wheeled vehicle in the walking aid state in the embodiment. Detailed Implementation
[0027] The following embodiments illustrate the present invention, but the present invention is not limited to these embodiments. Modifications to the specific implementation of the present invention or equivalent substitutions for some technical features, without departing from the spirit of the present invention, should all be covered within the scope of the technical solution claimed by the present invention.
[0028] Example 1: As Figures 1 to 8 As shown, this embodiment provides a dual-purpose four-wheeled vehicle structure, including two side armrest assemblies 1, a foldable seat assembly 2, and a backrest assembly 3. The two sides of the seat assembly 2 are respectively connected to the armrest assembly 1, and the two sides of the backrest assembly 3 are respectively rotatably connected to the top of the armrest assembly 1, so that the backrest assembly 3 can be set facing forward or backward. A detachable foot pedal assembly 4 is provided at the front end of the armrest assembly 1, and the armrest assembly 1 includes a C-shaped tube 11, a front armrest tube 12, and a rear armrest tube 13. The front side of the C-shaped tube 11 is connected to the front armrest tube 12, and the rear side of the C-shaped tube 11 is rotatably connected to the rear armrest tube 13. The tilt angle of the rear armrest tube 13 is adjustable.
[0029] This embodiment provides a dual-purpose four-wheeled vehicle structure that can be used as a walking aid or as a push chair, satisfying both user needs.
[0030] The use of C-shaped tubing 11 enhances the overall structural strength of the four-wheeled vehicle, thereby increasing its load-bearing capacity. The tilt angle of the rear armrest tubing 13 is adjustable. Specifically, when the four-wheeled vehicle is used as a regular walking aid, the rear armrest tubing 13 is relatively vertical, accommodating walking aid use. When the four-wheeled vehicle is used as a regular push chair, the rear armrest tubing 13 is tilted relatively backward, accommodating push chair use.
[0031] In addition, such as Figure 8As shown, when the backrest assembly 3 is facing forward and the foot pedal assembly 4 is not installed, the four-wheeled vehicle can be used as a regular walking aid.
[0032] like Figure 1-7 As shown, when the backrest assembly 3 is positioned facing backward and the foot pedal assembly 4 is installed, the four-wheeled vehicle can be used as a regular push chair.
[0033] As can be seen, the four-wheeled vehicle provided in this embodiment can adjust the orientation of the backrest assembly 3 by rotating it, and at the same time cooperate with the detachable foot pedal assembly 4, so that the four-wheeled vehicle has two different forms: a walking aid and a push chair. This can meet the user's needs for both walking aid and push chair, reduce the user's usage cost, and improve the user's experience.
[0034] In this embodiment, a first rotating connector 5 is provided on the top of the armrest assembly 1, and the backrest assembly 3 includes a backrest 31 and second rotating connectors 32 disposed on both sides of the backrest 31. The first rotating connector 5 and the second rotating connector 32 are rotatably connected together by a rotating shaft 33. The structure is simple and the design is reasonable. The rotation setting of the backrest assembly 3 can be realized through the first rotating connector 5 and the second rotating connector 32. The rotation setting of the backrest assembly 3 is conducive to the user's adjustment of the backrest assembly 3, and the user experience is better.
[0035] Further, specifically, such as Figure 8 As shown, when the backrest assembly 3 is facing forward and the foot pedal assembly 4 is not installed, and the rear armrest tube 13 is relatively vertical, the four-wheeled vehicle can be used as an ordinary walking aid.
[0036] like Figure 1-7 As shown, when the backrest assembly 3 is positioned rearward and the footrest assembly 4 is installed, the rear armrest tube 13 is also relatively tilted backward. In this case, the four-wheeled vehicle can be used as a regular push chair.
[0037] In this embodiment, a front caster 61 is provided at the bottom of the front armrest tube 12, a detachable connecting tube 7 is provided at the lower end of the C-shaped tube 11, and a rear caster 62 is provided at the bottom of the connecting tube 7. The structure is simple and the design is reasonable. By reasonably configuring the front caster 61 and the rear caster 62, the stability and reliability of the overall structure of the four-wheeled vehicle can be improved.
[0038] Preferably, a connecting member 8 is provided on the front armrest tube 12, and a connecting groove 41 is provided on the top of the foot pedal assembly 4 from bottom to top. The connecting groove 41 and the connecting member 8 are detachably connected. The structure is simple and the design is reasonable. The detachable connection between the connecting groove 41 and the connecting member 8 can realize the detachable connection between the foot pedal assembly 4 and the front armrest tube 12, which is conducive to improving the user experience.
[0039] More preferably, a movable adjusting tube 9 is provided at the upper end of the C-shaped tube 11. The end of the adjusting tube 9 is rotatably connected to the rear handrail tube 13, and the bottom of the rear handrail tube 13 is rotatably connected to the lower side of the C-shaped tube 11. This structure is simple and allows for a rotatable connection between the rear handrail tube 13 and the C-shaped tube 11. This enables the adjustment of the rear handrail tube 13 to meet the usage requirements of the four-wheeled vehicle in different configurations. Furthermore, the connection between the C-shaped tube 11 and the rear handrail tube 13 is relatively more stable and reliable.
[0040] In this embodiment, a screw 10 is also included. A plurality of first connecting holes 110 are provided on the C-shaped tube 11 at intervals, and a second connecting hole 91 is provided on the adjusting tube 9. The screw 10 connects the first connecting holes 110 and the second connecting holes 91 at corresponding positions together. The structure is simple and the design is reasonable. This allows for the adjustment of the connection length between the adjusting tube 9 and the C-shaped tube 11, and thus the adjustment of the tilt angle of the rear armrest tube 13 connected to the adjusting tube 9, so as to meet the usage requirements of the four-wheeled vehicle in different configurations.
[0041] Furthermore, a first connecting block 14 is provided on the rear armrest tube 13, and the end of the adjusting tube 9 is inserted into the first connecting block 14. The first connecting block 14 and the adjusting tube 9 are rotatably connected together by screws 10. The structure is simple and the design is reasonable, so as to realize the rotatable connection between the rear armrest tube 13 and the adjusting tube 9, thereby realizing the adjustment of the tilt angle of the rear armrest tube 13.
[0042] Furthermore, a second connecting block 15 is provided at the bottom of the rear armrest tube 13. The lower side of the C-shaped tube 11 is inserted into the second connecting block 15. The second connecting block 15 and the lower side of the C-shaped tube 11 are rotatably connected together by screws 10. The structure is simple and the design is reasonable. This allows for a rotatable connection between the lower side of the rear armrest tube 13 and the C-shaped tube 11, thereby enabling the adjustment of the tilt angle of the rear armrest tube 13.
[0043] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.
Claims
1. A dual-purpose quadricycle structure, characterized in that: The application relates to a folding armrest assembly (1), which comprises a seat assembly (2) and a backrest assembly (3), wherein the seat assembly (2) is connected to the armrest assembly (1) on both sides, the backrest assembly (3) is rotatably connected to the top of the armrest assembly (1) on both sides, and the armrest assembly (1) comprises a rear armrest pipe (13) arranged in the up-down direction, and the inclination angle of the rear armrest pipe (13) can be adjusted.
2. A dual-purpose quadricycle structure according to claim 1, characterized in that: The armrest assembly (1) further comprises a C-shaped pipe (11) and a front armrest pipe (12), wherein the front side of the C-shaped pipe (11) is connected to the front armrest pipe (12), and the rear side of the C-shaped pipe (11) is rotatably connected to the rear armrest pipe (13).
3. A dual-purpose quadricycle structure according to claim 2, characterized in that: A front caster (61) is arranged at the bottom of the front armrest pipe (12), a detachable connecting pipe (7) is arranged at the lower end of the C-shaped pipe (11), and a rear caster (62) is arranged at the bottom of the connecting pipe (7).
4. A dual-purpose quadricycle structure according to claim 2, characterized in that: A detachable footrest assembly (4) is arranged at the front end of the armrest assembly (1), a connecting member (8) is arranged on the front armrest pipe (12), a connecting groove (41) is arranged on the top of the footrest assembly (4) from bottom to top, and the connecting groove (41) and the connecting member (8) are detachably connected.
5. A dual purpose four-wheeled vehicle structure as claimed in claim 2, 3 or 4, characterised in that: A movable adjusting pipe (9) is arranged at the upper end of the C-shaped pipe (11), the end of the adjusting pipe (9) is rotatably connected to the rear armrest pipe (13), and the bottom of the rear armrest pipe (13) is rotatably connected to the lower side of the C-shaped pipe (11).
6. A dual-purpose quadricycle structure according to claim 5, characterized in that: A screw (10) is further arranged, a plurality of first connecting holes (110) are arranged on the C-shaped pipe (11) at intervals, a second connecting hole (91) is arranged on the adjusting pipe (9), and the first connecting hole (110) and the second connecting hole (91) corresponding in position are connected together through the screw (10).
7. A dual-purpose quadricycle structure according to claim 6, characterized in that: A first connecting block (14) is arranged on the rear armrest pipe (13), the end of the adjusting pipe (9) is inserted into the first connecting block (14), and the first connecting block (14) and the adjusting pipe (9) are rotatably connected together through the screw (10).
8. A dual-purpose quadricycle structure according to claim 7, characterized in that: A second connecting block (15) is arranged at the bottom of the rear armrest pipe (13), the lower side of the C-shaped pipe (11) is inserted into the second connecting block (15), and the second connecting block (15) and the lower side of the C-shaped pipe (11) are rotatably connected together through the screw (10).
9. A dual-purpose four-wheeled vehicle structure according to any one of claims 1-8, characterized in that: The backrest assembly (3) can be arranged forwardly or rearwardly.
10. A dual-purpose quadricycle structure according to claim 9, characterized in that: A first rotary connecting piece (5) is arranged at the top of the armrest assembly (1), the backrest assembly (3) comprises a backrest (31) and a second rotary connecting piece (32) arranged on both sides of the backrest (31), and the first rotary connecting piece (5) and the second rotary connecting piece (32) are rotatably connected together through a rotary shaft (33).