Three-wheeled walking aid

Abstract

This utility model belongs to the field of medical assistive device technology, and provides a three-wheeled walking aid, including a folding frame and a wheel assembly installed at the bottom of the folding frame. The folding frame includes a left frame and a right frame, with one end of the left frame hinged to one end of the right frame. The wheel assembly includes a front wheel, a left rear wheel, and a right rear wheel. The front wheel is located at the hinge point between the left and right frames, and the left and right rear wheels are located at the other end of the left and right frames. It also includes a saddle mounted between the left and right frames. The saddle includes a seat cushion and a first support rod. One end of the first support rod is hinged to the left frame, and the other end is detachably connected to the right frame. The seat cushion is mounted on the first support rod. This three-wheeled walking aid, by setting up a triangular structure with the hinged left and right frames and the first support rod of the saddle, makes the overall structure of the folding frame more stable and reliable, and also facilitates unfolding and folding operations.

Description

Technical Field

[0001] This utility model relates to the field of medical assistive device technology, and in particular to a three-wheeled walking aid. Background Technology

[0002] For patients or elderly people with limited mobility, the risk of slipping and falling when traveling alone without assistance is high. To avoid this, they typically use walkers or similar assistive devices. While most existing walkers can be folded up when not in use and unfolded when needed, their bulky design still requires considerable storage space even when folded. Furthermore, the complex structure of existing foldable walkers makes folding and unfolding them cumbersome, which is inconvenient for patients or elderly people with limited mobility.

[0003] The technical problem to be solved by this utility model is: how to solve the problem that the existing walking aids are bulky after folding and that folding and unfolding are inconvenient. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a three-wheeled walking vehicle with the characteristics of simple structure, easy use and easy storage.

[0005] The technical solution adopted by this utility model is as follows: a three-wheeled walking vehicle, including a folding frame and a wheel assembly installed at the bottom of the folding frame. The folding frame includes a left frame and a right frame, with one end of the left frame and one end of the right frame hinged together. The wheel assembly includes a front wheel, a left rear wheel and a right rear wheel. The front wheel is located at the hinge between the left frame and the right frame, the left rear wheel is located at the other end of the left frame, and the right rear wheel is located at the other end of the right frame.

[0006] It also includes a saddle mounted between the left and right frames. The saddle includes a seat and a first support rod. One end of the first support rod is hinged to the left frame and the other end is detachably connected to the right frame. The seat is mounted on the first support rod.

[0007] The three-wheeled walking aid of this application features a triangular structure formed by the hinged left and right frames and the first support rod of the saddle, making the overall structure of the folding frame more stable and reliable. When unfolding, the left and right frames are opened, and the saddle is flipped to connect the first support rod with the right frame, thus enabling the unfolding operation of the three-wheeled walking aid. When folding, the first support rod is separated from the right frame, then the left and right frames are folded in half, and the saddle is flipped to rest against one side of the left frame. The operation is convenient and quick, and the folded three-wheeled walking aid has a compact overall size, making it easy to store or transport.

[0008] In some embodiments, the first support rod is rotatably connected to a hinged seat at one end near the left frame and to a first snap-fit ​​seat at the other end.

[0009] By adopting the above technical solution, the hinge seat is rotatably connected to the first support rod, which facilitates the adjustment of the seat posture when the frame is folded, so that the saddle fits snugly against the left frame, which helps to reduce the volume of the folded bicycle. The first snap-fit ​​seat is set at the other end of the first support rod, which facilitates quick disassembly and assembly of the first support rod and the right frame, and facilitates the unfolding or storage of the frame. Rotating the first snap-fit ​​seat to the first support rod allows the posture of the first snap-fit ​​seat to be adjusted so that the first snap-fit ​​seat can fit with the right frame.

[0010] In some embodiments, the saddle also includes a second support rod disposed at the bottom of the seat cushion, the second support rod being spaced apart from the first support rod, one end of the second support rod being detachably connected to the left frame and the other end being detachably connected to the right frame.

[0011] By adopting the above technical solution, the load-bearing capacity of the saddle can be improved by setting a second support rod, making the overall structure of the frame more stable after it is opened. The second support rod is detachably connected to the left and right frames, which facilitates the opening and folding of the frame.

[0012] In some embodiments, a second locking seat is rotatably provided at one end of the second support rod near the left frame, and a third locking seat is rotatably provided at the other end.

[0013] By adopting the above technical solution, the second support rod is set to snap-fit ​​with the left and right frames, which can realize quick installation and quick removal of the second support rod with the left and right frames, making the unfolding and folding operation of the frame more convenient.

[0014] In some embodiments, the left frame includes a left support bracket and a left connecting bracket, which are detachably connected; the right frame includes a right support bracket and a right connecting bracket, which are detachably connected; the left connecting bracket and the right connecting bracket are hinged; one end of a first support rod is hinged to the left support bracket and the other end is detachably connected to the right support bracket; and a seat cushion is mounted on top of the first support rod.

[0015] By adopting the above technical solution, the volume of the walking aid after folding can be further reduced. In cases where transportation or storage space is limited, the left support frame can be separated from the left connecting frame, and the right support frame can be separated from the right connecting frame.

[0016] In some embodiments, a first tenon is provided on the left connecting frame, a first tenon is provided on the left support frame to interlock with the first tenon, a first anti-detachment pin is provided between the first tenon and the first tenon, and a first pin hole is provided on both the first tenon and the first tenon for the first anti-detachment pin to pass through.

[0017] The right connecting frame is provided with a second tenon, and the right support frame is provided with a second tenon that interlocks with the second tenon. A second anti-detachment pin is provided between the second tenon and the second tenon. Both the second tenon and the second tenon are provided with a second pin hole for the second anti-detachment pin to pass through.

[0018] By adopting the above technical solution, the left connecting frame and the left support frame can be quickly assembled and disassembled through the cooperation of the first tenon, the first tenon tube and the first anti-detachment pin. Similarly, the right connecting frame and the right support frame can be quickly assembled and disassembled through the cooperation of the second tenon, the second tenon tube and the second anti-detachment pin, simplifying the opening and closing operation of the folding frame.

[0019] In some embodiments, the first anti-detachment pin is connected with a first retaining ring, which engages with the outer surface of the first tenon.

[0020] The second anti-detachment pin connection has a second retaining ring, which engages with the outer surface of the second tenon.

[0021] By adopting the above technical solution, the retaining ring can prevent the anti-detachment pin from easily coming out of the pin hole, thereby improving the reliability of the frame structure. When disassembly is required, the anti-detachment pin can be quickly pulled out of the pin hole.

[0022] In some embodiments, the left frame also includes a left handrail frame, which is telescopically connected to the left connecting frame;

[0023] The right frame also includes a right handrail frame, which is telescopically connected to the right connecting frame.

[0024] By adopting the above technical solution, the height of the armrest can be adjusted according to needs, so that the height of the armrest matches the user's body size, which is conducive to improving the user's user experience. At the same time, the height of the armrest can be reduced when storing the bicycle frame, further reducing the volume of the folded frame.

[0025] In some embodiments, the folding frame further includes a linkage assembly, which includes a first link and a second link. One end of the first link is hinged to the left frame, and the other end is hinged to one end of the second link. The other end of the second link is hinged to the right frame. A stop corresponding to the second link is provided on the first link.

[0026] By adopting the above technical solution, the first link and the second link can cooperate to limit the opening angle of the left frame and the right frame, so as to facilitate the positioning of the frame after it is opened.

[0027] In some implementations, a storage unit detachably connected to the folding frame is also included, the storage unit being located at the bottom of the saddle.

[0028] Using the above technical solution, the storage device can store items, allowing users to put their belongings inside when they go out. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a three-wheeled walking aid according to a preferred embodiment of the present invention;

[0030] Figure 2 for Figure 1 The diagram shown is a structural schematic of the three-wheeled walking aid from another perspective, in which the storage components are not shown;

[0031] Figure 3 for Figure 2 The diagram shows a structural schematic of the three-wheeled walking aid from another perspective;

[0032] Figure 4 Figure 3 shows a schematic diagram of the saddle in the three-wheeled walking vehicle.

[0033] Figure 5 This is an exploded view of the left frame structure;

[0034] Figure 6 for Figure 2 The diagram shown is a structural schematic of a three-wheeled walking aid in a folded state.

[0035] In the diagram: 100. Tricycle; 10. Left frame; 11. Left support frame; 12. Left connecting frame; 13. First tenon; 14. First tenon; 15. First anti-detachment pin; 16. First retaining ring; 17. Left handrail frame; 20. Right frame; 21. Right support frame; 22. Right connecting frame; 23. Second tenon; 24. Second tenon; 25. Second anti-detachment pin; 26. Second retaining ring; 27. Right handrail frame 30. Wheel assembly; 31. Front wheel; 32. Left rear wheel; 33. Right rear wheel; 40. Saddle; 41. Seat cushion; 42. First support rod; 421. Hinge seat; 422. First locking seat; 43. Second support rod; 431. Second locking seat; 432. Third locking seat; 50. Linkage assembly; 51. First link; 52. Second link; 53. Stop; 54. Handle; 60. Storage item. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] Please see Figures 1 to 6 A preferred embodiment of the present invention provides a three-wheeled walking vehicle 100, comprising a folding frame and a wheel assembly 30 mounted on the bottom of the folding frame. The folding frame includes a left frame 10 and a right frame 20, with one end of the left frame 10 hinged to one end of the right frame 20. The wheel assembly 30 includes a front wheel 31, a left rear wheel 32, and a right rear wheel 33. The front wheel 31 is located at the hinge between the left frame 10 and the right frame 20, the left rear wheel 32 is located at the other end of the left frame 10, and the right rear wheel 33 is located at the other end of the right frame 20. The vehicle also includes a saddle 40 mounted between the left frame 10 and the right frame 20. The saddle 40 includes a seat cushion 41 and a first support rod 42, with one end of the first support rod 42 hinged to the left frame 10 and the other end detachably connected to the right frame 20. The seat cushion 41 is mounted on the first support rod 42.

[0040] The three-wheeled walking aid 100 of this application has a triangular structure formed by the first support rod 42 of the left frame 10, right frame 20 and saddle 40 that are hinged to each other, making the overall structure of the folding frame more stable and reliable. When unfolding, the left frame 10 and right frame 20 are opened, and then the saddle 40 is flipped to connect the first support rod 42 with the right frame 20, thus realizing the unfolding operation of the three-wheeled walking aid 100. When folding, the first support rod 42 is separated from the right frame 20, then the left frame 10 and right frame 20 are folded in half, and then the saddle 40 is flipped and placed against one side of the left frame 10. The operation is convenient and quick, and the folded three-wheeled walking aid 100 has a compact overall size, making it convenient for storage or transportation.

[0041] Specifically, the first support rod 42 is rotatably connected to a hinge seat 421 at one end near the left frame 10, and to a first latching seat 422 at the other end. The hinge seat 421 is rotatably connected to the first support rod 42, which allows the seat 41 to be adjusted in the folded state so that the saddle 40 fits snugly against the left frame 10, thus reducing the size of the folded bicycle. The first latching seat 422 is provided at the other end of the first support rod 42, which allows the first support rod 42 to be quickly disassembled and assembled with the right frame 20, facilitating the unfolding or storage of the frame. Rotating the first latching seat 422 to the first support rod 42 allows the attitude of the first latching seat 422 to be adjusted so that the first latching seat 422 can cooperate with the right frame 20.

[0042] Alternatively, in other embodiments, the first support rod 42 can also be detachably connected to the right frame 20 by means of a pin engaging with a slot, magnetic engagement, or strapping.

[0043] Preferably, in one embodiment, the saddle 40 further includes a second support rod 43 disposed at the bottom of the seat cushion 41. The second support rod 43 is spaced apart from the first support rod 42. One end of the second support rod 43 is detachably connected to the left frame 10, and the other end is detachably connected to the right frame 20. By providing the second support rod 43, the load-bearing capacity of the saddle 40 can be improved, making the overall structure of the frame more stable when opened. The detachable connection of the second support rod 43 to the left frame 10 and the right frame 20 facilitates the opening and folding operations of the frame.

[0044] Furthermore, a second locking seat 431 is rotatably mounted on one end of the second support rod 43 near the left frame 10, and a third locking seat 432 is rotatably mounted on the other end. By locking the second support rod 43 to the left frame 10 and the right frame 20, quick-release and easy installation and removal of the second support rod 43 to the left frame 10 and the right frame 20 are achieved, making the unfolding and folding operations of the frame more convenient. In addition, when the walking aid is in the folded state, the second locking seat 431 or the third locking seat 432 can be locked onto the left frame 10 to prevent the saddle 40 from easily unfolding, improving the structural reliability of the walking aid after folding and storage.

[0045] like Figure 2 and Figure 5As shown, the left frame 10 includes a left support frame 11 and a left connecting frame 12, which are detachably connected. Similarly, the right frame 20 includes a right support frame 21 and a right connecting frame 22, which are detachably connected. The left connecting frame 12 and the right connecting frame 22 are hinged together. One end of the first support rod 42 is hinged to the left support frame 11, and the other end is detachably connected to the right support frame 21. The seat cushion 41 is mounted on top of the first support rod 42. This configuration can further reduce the size of the folded walking aid. In situations where transportation or storage space is limited, the left support frame 11 and the left connecting frame 12, as well as the right support frame 21 and the right connecting frame 22, can be separated for separate storage, thus reducing the overall size of the folded walking aid.

[0046] Furthermore, the left connecting frame 12 is provided with a first tenon 13, and the left support frame 11 is provided with a first tenon 14 that interlocks with the first tenon 13. A first anti-detachment pin 15 is provided between the first tenon 13 and the first tenon 14. Both the first tenon 13 and the first tenon 14 are provided with a first pin hole (not shown in the figure) for the first anti-detachment pin 15 to pass through. Similarly, the right connecting frame 22 is provided with a second tenon 23, and the right support frame 21 is provided with a second tenon 24 that interlocks with the second tenon 23. A second anti-detachment pin 25 is provided between the second tenon 23 and the second tenon 24. Both the second tenon 23 and the second tenon 24 are provided with a second pin hole (not shown in the figure) for the second anti-detachment pin 25 to pass through. The left connecting frame 12 and the left support frame 11 can be quickly assembled and disassembled by the cooperation of the first tenon 13, the first tenon 14 and the first anti-detachment pin 15. Similarly, the right connecting frame 22 and the right support frame 21 can be quickly assembled and disassembled by the cooperation of the second tenon 23, the second tenon 24 and the second anti-detachment pin 25, which simplifies the operation of opening and closing the folding frame.

[0047] Furthermore, the first anti-detachment pin 15 is connected to a first retaining ring 16, which engages with the outer surface of the first tenon 14; the second anti-detachment pin 25 is connected to a second retaining ring 26, which engages with the outer surface of the second tenon 24. The retaining rings prevent the anti-detachment pins from easily coming out of the pin holes, improving the reliability of the frame structure. When disassembly is required, the anti-detachment pins can be quickly pulled out of the pin holes.

[0048] For ease of use, the left frame 10 also includes a left handrail frame 17, which is retractably connected to the left connecting frame 12; the right frame 20 also includes a right handrail frame 27, which is retractably connected to the right connecting frame 22. The retractable handrail frame allows for height adjustment to match the user's height, improving the user experience. It also allows for lowering the handrail frame height when storing the frame, further reducing its folded size.

[0049] Specifically, a sleeve (not shown in the figure) is provided on the left connecting frame 12, and a slide rod (not shown in the figure) that slides with the sleeve is provided on the left handrail frame 17. Several positioning holes (not shown in the figure) are provided at intervals along the length extension direction on the slide rod. A screw (not shown in the figure) that passes through the positioning holes is provided on the sleeve. The height of the left handrail frame 17 can be adjusted by adjusting the position of the positioning hole through which the screw passes. The structure is simple and reliable. The height adjustment structure and principle of the right handrail frame 27 are the same as those of the left handrail frame 17, and will not be described again here.

[0050] like Figure 2 and Figure 6 As shown, in one embodiment, the folding frame further includes a linkage assembly 50, which includes a first linkage 51 and a second linkage 52. One end of the first linkage 51 is hinged to the left frame 10, and the other end is hinged to one end of the second linkage 52. The other end of the second linkage 52 is hinged to the right frame 20. A stop 53 corresponding to the second linkage 52 is provided on the first linkage 51. The cooperation of the first linkage 51 and the second linkage 52 can limit the opening angle of the left frame 10 and the right frame 20, so as to facilitate positioning of the frame after it is opened.

[0051] Preferably, in order to facilitate pulling the first link 51 and the second link 52 to realize the unfolding or folding of the left frame 10 and the right frame 20, the link assembly 50 also includes a handle 54. The handle 54 is located at the hinge of the first link 51 and the second link 52. By pulling the handle 54, the relative angle between the first link 51 and the second link 52 can be adjusted, thereby realizing the switching between unfolding or folding of the left frame 10 and the right frame 20.

[0052] like Figure 1 As shown, in one embodiment, a storage compartment 60 detachably connected to the folding frame is also included, and the storage compartment 60 is disposed at the bottom of the saddle 40. The storage compartment 60 can store items, allowing the user to place their belongings inside when going out. Optionally, the storage compartment 60 can be a mesh bag, cloth bag, leather bag, or soft plastic bag, which facilitates storage and folding. Furthermore, the storage compartment 60 can be detachably connected to the folding frame by means of straps, magnets, fasteners, snaps, etc.

[0053] When folding and storing, first lift the seat 41 upwards to separate the locking seat from the frame, then pull the handle to rotate the first link 51 and the second link 52, changing the included angle from 180 degrees to an acute angle. Driven by the first link 51 and the second link 52, the left frame 10 and the right frame 20 fold closer to each other. Then, flip the saddle 40 to the side of the left frame 10 away from the right frame 20, and then lock the second locking seat 431 onto the left connecting frame 12, thus realizing the folding and storage of the three-wheeled walking vehicle 100 of this application. When unfolding, the operation is reversed. It has the characteristics of compact size after folding and convenient unfolding and storage operation.

[0054] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A three-wheeled walker comprising a folding frame and a wheel assembly (30) mounted at the bottom of the folding frame, characterized in that, The folding frame includes a left frame (10) and a right frame (20), one end of the left frame (10) is hinged to one end of the right frame (20), and the wheel assembly (30) includes a front wheel (31), a left rear wheel (32) and a right rear wheel (33), the front wheel (31) is located at the hinge between the left frame (10) and the right frame (20), the left rear wheel (32) is located at the other end of the left frame (10), and the right rear wheel (33) is located at the other end of the right frame (20); It also includes a saddle (40) mounted between the left frame (10) and the right frame (20). The saddle (40) includes a seat cushion (41) and a first support rod (42). One end of the first support rod (42) is hinged to the left frame (10), and the other end is detachably connected to the right frame (20). The seat cushion (41) is mounted on the first support rod (42).

2. The three-wheeled walking aid according to claim 1, characterized in that, The first support rod (42) is rotatably connected to a hinge seat (421) at one end near the left frame (10), and to a first snap-fit ​​seat (422) at the other end.

3. The three-wheeled walking aid according to claim 1, characterized in that, The saddle (40) also includes a second support rod (43) disposed at the bottom of the seat cushion (41). The second support rod (43) is spaced apart from the first support rod (42). One end of the second support rod (43) is detachably connected to the left frame (10), and the other end is detachably connected to the right frame (20).

4. The three-wheeled walking aid according to claim 3, characterized in that, The second support rod (43) has a second locking seat (431) rotatably mounted at one end near the left frame (10), and a third locking seat (432) rotatably mounted at the other end.

5. The three-wheeled walking aid according to claim 1, characterized in that, The left frame (10) includes a left support frame (11) and a left connecting frame (12), which are detachably connected. The right frame (20) includes a right support frame (21) and a right connecting frame (22), which are detachably connected. The left connecting frame (12) and the right connecting frame (22) are hinged. One end of the first support rod (42) is hinged to the left support frame (11), and the other end is detachably connected to the right support frame (21). The seat cushion (41) is installed on the top of the first support rod (42).

6. The three-wheeled walking aid according to claim 5, characterized in that, The left connecting frame (12) is provided with a first tenon (13), and the left support frame (11) is provided with a first tenon (14) that interlocks with the first tenon (13). A first anti-detachment pin (15) is provided between the first tenon (13) and the first tenon (14). Both the first tenon (13) and the first tenon (14) are provided with a first pin hole for the first anti-detachment pin (15) to pass through. The right connecting frame (22) is provided with a second tenon (23), and the right support frame (21) is provided with a second tenon (24) that interlocks with the second tenon (23). A second anti-detachment pin (25) is provided between the second tenon (23) and the second tenon (24). Both the second tenon (23) and the second tenon (24) are provided with a second pin hole for the second anti-detachment pin (25) to pass through.

7. The three-wheeled walking aid according to claim 6, characterized in that, The first anti-detachment pin (15) is connected to a first retaining ring (16), and the first retaining ring (16) is engaged with the outer surface of the first tenon (14); The second anti-detachment pin (25) is connected to a second retaining ring (26), which engages with the outer surface of the second tenon (24).

8. The three-wheeled walking aid according to claim 5, characterized in that, The left frame (10) also includes a left handrail frame (17), which is telescopically connected to the left connecting frame (12); The right frame (20) also includes a right handrail frame (27), which is telescopically connected to the right connecting frame (22).

9. The three-wheeled walking aid according to claim 1, characterized in that, The folding frame also includes a linkage assembly (50), which includes a first link (51) and a second link (52). One end of the first link (51) is hinged to the left frame (10), and the other end is hinged to one end of the second link (52). The other end of the second link (52) is hinged to the right frame (20). A stop (53) corresponding to the second link (52) is provided on the first link (51).

10. The three-wheeled walking aid according to claim 1, characterized in that, It also includes a storage unit (60) detachably connected to the folding frame, the storage unit (60) being disposed at the bottom of the saddle (40).

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