An adaptive crutch / wheelchair conversion device

Abstract

This invention relates to an adaptive cane / wheelchair conversion device, comprising a pair of canes capable of transforming between cane and wheelchair modes. Each cane includes a cane body, which comprises a central base and a support frame. Each cane body has a foldable seat and a foldable wheelchair support rod, with rollers at the top of each support rod. In cane mode, the seat, backrest, and wheelchair support rod are folded down, with the cane in direct contact with the ground. In wheelchair mode, the seat is adjusted to a usable position via a spring-loaded pin, and the two seat panels are connected and fixed together by locking components and locking mating parts. The backrest is engaged with a corresponding backrest mating part, and the wheelchair support rod is folded down via a spring-loaded pin until the rollers are in direct contact with the ground. Compared to existing technologies, this invention allows for easy switching between cane and wheelchair modes to meet the daily mobility and rehabilitation training needs of patients with only one lower limb.

Description

Technical Field

[0001] This invention relates to the field of medical assistive device technology, and in particular to an adaptive cane / wheelchair conversion device. Background Technology

[0002] For patients with lower limb fractures, such as femoral neck fractures, femoral shaft fractures, tibia and fibula shaft fractures, and ankle fractures, crutches are an important assistive tool during rehabilitation. They help patients stand and walk without placing their weight on the injured leg, knee, or ankle, reducing the burden on the affected limb, providing extra support and stability, preventing falls, and promoting recovery.

[0003] While traditional crutches are easy to carry, they cannot provide sustained support, and patients with single-limb fractures often need to use wheelchairs when going out or walking long distances. For patients who are unable to bear their weight or walk safely due to pain, weakness, or other reasons, wheelchairs are a more suitable assistive tool. They provide convenience and independence in movement, while reducing pressure on the injured area and preventing secondary injuries caused by improper walking.

[0004] However, the cost of purchasing both wheelchairs and crutches is typically relatively high, leading some patients to choose only one. Furthermore, carrying crutches is extremely inconvenient for patients in wheelchairs. Therefore, there is an urgent need to develop a novel assistive device for fracture patients that can adaptively and quickly transform crutches into a wheelchair to meet their diverse needs when going out. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing wheelchairs and crutches in that they are difficult to combine, and to provide an adaptive crutches / wheelchair conversion device to meet the diverse needs of fracture patients when going out.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] This invention provides an adaptive cane / wheelchair conversion device, comprising a pair of canes that can transform between cane mode and wheelchair mode; each cane includes a cane body, the cane body includes a central base column that can directly contact the ground and support frames respectively disposed on both sides of the central base column; each cane body is provided with a foldable seat plate and a foldable wheelchair support rod, and the top of each wheelchair support rod is provided with a roller that can move on the bottom surface;

[0008] One of the canes has a locking element at the bottom of its seat plate, and the other cane has a locking engagement element at the bottom of its seat plate that can cooperate with the locking element to fix it in place; one of the canes has a stretchable backrest on its cane body, and the other cane has a backrest engagement element on its cane body for fixing the backrest.

[0009] Each support frame is provided with a first rotating mounting seat, and each central bottom column is provided with a second rotating mounting seat; both the seat plate and the support rod are connected with spring pins, wherein the seat plate can be fixed with the first rotating mounting seat by the spring pins, and the support rod can be fixed with the second rotating mounting seat by the spring pins.

[0010] In the cane mode, the seat, backrest, and upward-folding wheelchair support rod are all stowed, and the bottom of the cane is in direct contact with the ground.

[0011] In wheelchair mode, the seat plate is adjusted to the use state by a spring pin, and the two seat plates are connected and fixed by a locking member and a locking engagement member. The backrest is connected to the corresponding backrest engagement member, and the wheelchair support rod is folded down by a spring pin so that the rollers are in direct contact with the ground.

[0012] Furthermore, a crossbeam is connected to the top of the support frame, and a handle is connected to the middle of the support frame.

[0013] Furthermore, the bottom of the central column is provided with an anti-slip support pad.

[0014] Furthermore, an armpit pad is installed on the crossbeam, and the armpit pad has an arc surface that conforms to the armpit.

[0015] Furthermore, each of the two support frames of the cane body is provided with a first rotating mounting seat, and each first rotating mounting seat is provided with a first main hole and at least two first adjustment holes.

[0016] Furthermore, the seat plate includes a seat plate support plate and a seat cushion, wherein the end of the seat plate support plate is provided with a rotating connecting plate.

[0017] Furthermore, the rotating connecting plate rotates via a first rotating shaft that engages with the first main hole shaft on both sides, and the rotating connecting plate is connected to the first adjusting hole via a spring pin to adjust the seat plate between the storage state and the use state.

[0018] Furthermore, the locking element includes a central knob and a semi-circular ring, with the central knob and the semi-circular ring connected by a connecting rod.

[0019] Furthermore, the locking mechanism includes an annular positioning element located at the bottom of the base plate and an arc-shaped slot with the same center as the annular positioning element. The semicircular ring of the locking mechanism can engage with the arc-shaped slot to achieve locking when the central knob is rotated.

[0020] Furthermore, the second rotating mounting base is centrally symmetrically arranged at the same horizontal height as the central base column, and each of the second rotating mounting bases has a second main hole and several second adjustment holes.

[0021] Furthermore, the wheelchair support rod is rotatable via a second pivot that passes through the end of the wheelchair support rod and engages with the second main holes on both sides. The wheelchair support rod can switch between a stowed state and a use state by connecting a spring pin with the second adjustment hole.

[0022] Furthermore, the backrest includes a stretchable support fabric and a storage slot on the support frame for rolling up and storing the stretchable support fabric.

[0023] Furthermore, the stretchable support fabric has a snap-fit ​​post at its stretching end, and the backrest fitting has a snap-fit ​​groove that can snap-fit ​​with the snap-fit ​​post.

[0024] Furthermore, the wheelchair support rod has a foldable foot pedal at one end near the roller.

[0025] Furthermore, the spring pin includes a pull rod, a hollow bolt, and a spring.

[0026] Furthermore, the pull rod includes a pin, a pull portion located at one end of the pin, and a limiting portion located at the other end of the pin, with the hollow bolt sleeved between the pull portion and the limiting portion.

[0027] Furthermore, the spring is sleeved between the hollow bolt and the limiting part, and both ends of the spring abut against the hollow bolt and the limiting part respectively.

[0028] Furthermore, the limiting portion of the spring pin can be inserted into the first or second rotating mounting base and fixed in place.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] (1) The adaptive cane / wheelchair conversion device of the present invention cleverly combines canes and wheelchairs, and can be easily switched between cane form and wheelchair form to meet the daily mobility and rehabilitation training needs of patients with single lower limbs.

[0031] (2) The present invention adopts simple manual assembly. Through the cooperation of locking parts and locking mating parts, and the cooperation of spring pin and rotating mounting base, two canes can be quickly assembled. The operation is simple and can be completed quickly by one person.

[0032] (3) The adaptive cane / wheelchair conversion device of the present invention has a compact structure in cane form, which is convenient for patients to carry when going out, and a stable structure in wheelchair form. The cane itself can be used as a natural handrail and pusher, which greatly simplifies the complex structure of other wheelchairs.

[0033] (4) The adaptive cane / wheelchair conversion device of the present invention can meet the special activities of fracture patients who stand or walk for a long time, such as tourism, exhibitions, conferences, etc., and provide walking and rest support for patients in these occasions. It is suitable for the mobility needs of various scenarios such as daily life, home care and public places. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the adaptive cane / wheelchair conversion device of the present invention in wheelchair mode.

[0035] Figure 2 This is a schematic diagram of the adaptive cane / wheelchair conversion device of the present invention in cane form.

[0036] Figure 3 This is a schematic diagram of the main body of the cane in Embodiment 2 of the present invention.

[0037] Figure 4 This is a schematic diagram of the structure of the first rotating mounting base in Embodiment 3 of the present invention.

[0038] Figure 5 This is a schematic diagram of the structure of the second rotating mounting base in Embodiment 3 of the present invention.

[0039] Figure 6 This is a schematic diagram of the spring pin structure in Embodiment 4 of the present invention.

[0040] Figure 7 This is an exploded view of the spring pin in Embodiment 4 of the present invention.

[0041] Figure 8 This is a schematic diagram of the locking member and locking mating member in Embodiment 5 of the present invention.

[0042] Figure 9 This is a diagram showing the fit between the locking component and the locking mating component in Embodiment 5 of the present invention.

[0043] Figure 10 This is a schematic diagram of the backrest and backrest mating parts in Embodiment 6 of the present invention.

[0044] Figure 11 This is a diagram showing the fit between the snap-fit ​​post and the snap-fit ​​groove in Embodiment 6 of the present invention.

[0045] Explanation of markings in the diagram:

[0046] 1-Cane body, 11-Central base column, 12-Support frame, 13-Crossbeam, 14-Grip bar, 15-Anti-slip support pad, 16-Arm pad, 17-First rotating mounting seat, 171-First main hole, 172-First adjustment hole, 173-First pivot, 18-Second rotating mounting seat, 181-Second main hole, 182-Second adjustment hole, 183-Second pivot;

[0047] 2-Seat plate, 21-Seat plate support plate, 22-Seat cushion, 23-Rotating connecting plate;

[0048] 3-Wheelchair support bar; 31-Foot pedal;

[0049] 4-Roller;

[0050] 5-Locking component, 51-Center knob, 52-Semi-circular ring, 53-Connecting rod;

[0051] 6-Locking mating part, 61-Annular positioning part, 62-Arc-shaped groove;

[0052] 7-Backrest, 71-Stretchable support fabric, 72-Storage slot, 73-Snap-fit ​​post;

[0053] 8-Backrest mating parts, 81-Snap-fit ​​groove;

[0054] 9-Spring pin, 91-Pull rod, 911-Pin, 912-Pull part, 913-Limiting part, 92-Hollow bolt, 93-Spring. Detailed Implementation

[0055] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0056] In this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0058] Example 1:

[0059] This embodiment provides an adaptive cane / wheelchair conversion device, including a pair of canes that can transform between cane mode and wheelchair mode. Each cane includes a cane body 1, which includes a central base 11 that can directly contact the ground and support frames 12 respectively located on both sides of the central base 11. Each cane body 1 is equipped with a foldable seat plate 2 and a foldable wheelchair support rod 3, and the top of each wheelchair support rod 3 is equipped with a roller 4 that can move on the bottom surface.

[0060] One of the canes has a locking element 5 at the bottom of its base plate 2, and the other cane has a locking engagement element 6 at the bottom of its base plate 2 that can cooperate with the locking element 5 for fixation. One of the canes has a stretchable backrest 7 on its cane body 1, and the other cane has a backrest engagement element 8 on its cane body 1 for fixing the backrest 7.

[0061] Each support frame 12 is equipped with a first rotating mounting seat 17, and the central bottom column 11 is equipped with a second rotating mounting seat 18. Both the seat plate 2 and the support rod 3 are connected by spring pins 9, wherein the seat plate 2 can be fixed with the first rotating mounting seat 17 through the spring pins 9, and the support rod 3 can be fixed with the second rotating mounting seat 18 through the spring pins 9.

[0062] like Figure 1-2 As shown, in cane mode, the seat 2, backrest 7, and upward-folding wheelchair support rod 3 are all stowed, with the bottom of the cane in direct contact with the ground. In wheelchair mode, the seat 2 is adjusted to the usable state via spring pin 9, and the two seat 2s are connected and fixed together by locking piece 5 and locking fitting 6. The backrest 7 is connected to the corresponding backrest fitting 8, and the wheelchair support rod 3 is folded down via spring pin 9 until the roller 4 is in direct contact with the ground.

[0063] Example 2:

[0064] This embodiment provides an adaptive cane / wheelchair conversion device, including a pair of canes that can transform between cane mode and wheelchair mode.

[0065] The difference from Example 1 is that, as Figure 3As shown, in this embodiment, the top of the support frame 12 is connected to a crossbeam 13, and an armpit pad 16 is installed on the crossbeam 13. The armpit pad 16 has an arc surface that conforms to the armpit, so that the patient can effectively support the weight of the upper body on the armpit pad 16 of the crossbeam 13 when moving forward with the cane. A grip bar 14 is connected to the middle of the support frame 12, so that the patient can grip the grip bar 14 to form effective support. The bottom of the central base column 11 is provided with an anti-slip support pad 15. The size of the anti-slip support pad 15 is larger than the bottom of the central base column 11, so that the cane can form effective support when in direct contact with the ground, and increases the friction between the cane and the ground, making it easier for the patient to move forward. The main structure of the cane in this embodiment is made of lightweight, high-strength aluminum alloy.

[0066] In this embodiment, the wheelchair support rod 3 has a foldable foot pedal 31 at one end near the roller 4, which makes it easy for the patient's feet to be placed for support in the wheelchair mode.

[0067] Example 3:

[0068] This embodiment provides an adaptive cane / wheelchair conversion device, including a pair of canes that can transform between cane mode and wheelchair mode.

[0069] The difference from Example 1 is that, as Figure 4 As shown, in this embodiment, each of the two support frames 12 of the cane body 1 is provided with a first rotating mounting seat 17. Each first rotating mounting seat 17 has a first main hole 171 and at least two first adjustment holes 172. The seat plate 2 includes a seat plate support plate 21 and a seat cushion 22, wherein the end of the seat plate support plate 21 is provided with a rotating connecting plate 23. The rotating connecting plate 23 is rotated by a first rotating shaft 173 that cooperates with the first main holes 171 on both sides, and the rotating connecting plate 23 is connected to the first adjustment holes 172 by a spring pin 9 to adjust the seat plate 2 to switch between the storage state and the use state.

[0070] like Figure 5 As shown, in this embodiment, the second rotating mounting base 18 is symmetrically arranged at the same horizontal height as the central base column 11. Each of the second rotating mounting bases 18 has a second main hole 181 and several second adjustment holes 182. The wheelchair support rod 3 is rotated by a second rotating shaft 183 that passes through the end of the wheelchair support rod 3 and engages with the second main holes 181 on both sides. The wheelchair support rod 3 can switch between a storage state and a use state by means of a spring pin 9 engaging with the second adjustment holes 182.

[0071] Example 4:

[0072] This embodiment provides an adaptive cane / wheelchair conversion device, including a pair of canes that can transform between cane mode and wheelchair mode.

[0073] The difference from Example 3 is that, as Figure 6-7 As shown, the spring pin 9 in this embodiment includes a pull rod 91, a hollow bolt 92, and a spring 93. The pull rod 91 includes a pin 911, a pull portion 912 at one end of the pin 911, and a limiting portion 913 at the other end of the pin 911. The hollow bolt 92 is sleeved between the pull portion 912 and the limiting portion 913. The spring 93 is sleeved between the hollow bolt 92 and the limiting portion 913, and both ends of the spring 93 abut against the hollow bolt 92 and the limiting portion 913, respectively. The limiting portion 913 of the spring pin 9 can be inserted into the first rotating mounting base 17 or the second rotating mounting base 18 and fixed in place. A transition plate is connected to the side of the first rotating shaft 173 and the second rotating shaft 183 near the spring pin 9. The transition plate has an internal thread that can engage with the hollow bolt 92.

[0074] Taking the second rotating mounting base 18 as an example, the wheelchair support rod 3 in the folded state is locked in the second adjustment hole 182 near the upper end by the spring pin 9, and the entire wheelchair support rod 3 is in an upward folded state. When it is necessary to transform this embodiment from a cane form to a wheelchair form, the wheelchair support rod 3 needs to be transformed from the upward folded folded state to the ground-supported state. At this time, the pull part 912 of the pull rod 91 is grasped and pulled outward. The limiting part 913 is pressed outward by the spring 93 until it is pulled out of the second adjustment hole 182 and locked. The wheelchair support rod 3 can then be rotated and folded downward. When the wheelchair support rod 3 is in sufficient contact with the ground and the central base column 11 is not in contact with the ground, the limiting part 913 of the pull rod 91 is inserted into the corresponding position of the second adjustment hole 182 again to form a lock. The other three wheelchair support rods 3 are operated in the same way to realize the successful transformation of the adaptive cane / wheelchair conversion device of this embodiment from cane form to wheelchair form.

[0075] The operation of the first rotating mounting base 17 and the spring pin 9 is the same, which can adjust the seat plate 2 in the storage state to a horizontal state, which will not be described in detail here.

[0076] Example 5:

[0077] An adaptive cane / wheelchair conversion device includes a pair of canes that can switch between cane mode and wheelchair mode.

[0078] The difference from Embodiment 1 is that, in order to achieve smooth assembly of the two seat plates 2 in wheelchair form, the structure of the locking component 5 and the locking mating component 6 is specifically designed. For example... Figure 8-9 As shown, the locking component 5 in this embodiment includes a central knob 51 and a semicircular ring 52. The central knob 51 and the semicircular ring 52 are connected by a connecting rod 53, which is located near the end of the semicircular ring 52. The central knob 51 is perpendicular to the base plate 2.

[0079] The locking component 6 includes an annular positioning component 61 located at the bottom of the base plate 2 and an arc-shaped slot 62 with the same center as the annular positioning component 61. The semi-circular ring 52 of the locking component 5 can engage with the arc-shaped slot 62 to achieve locking when the central knob 51 is rotated.

[0080] After both cane base plates 2 are adjusted to be horizontal by spring pins 9, the center knob 51 of one base plate 2 is positioned and spliced ​​with the annular positioning piece 61 of the other base plate 2. By rotating the center knob 51, the connecting rod 53 drives the semi-circular ring 52 to be inserted into the arc-shaped groove 62 of the locking fitting piece 6, so as to achieve smooth splicing and fixation of the two base plates 2.

[0081] Example 6:

[0082] An adaptive cane / wheelchair conversion device includes a pair of canes that can switch between cane mode and wheelchair mode.

[0083] The difference from Example 1 is that, as Figure 10-11 As shown, the backrest 7 in this embodiment includes a stretchable support fabric 71 and a storage groove 72 on the support frame 12 for rolling up and storing the stretchable support fabric 71. The stretchable end of the stretchable support fabric 71 is provided with a snap-fit ​​post 73. The backrest fitting 8 has a snap-fit ​​groove 81 that engages with the snap-fit ​​post 73. The snap-fit ​​groove 81 has a through opening along its length. A spiral spring connected to the stretchable support fabric 71 is provided in the storage groove 72, allowing the stretchable support fabric 71 to be stretched and reset in a manner similar to a measuring tape. In use, the snap-fit ​​post 73 is pulled close to the backrest fitting 8, and then snapped into the snap-fit ​​groove 81 from its upper end, forming a temporary backrest 7 for the patient to lean against.

[0084] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. An adaptive cane / wheelchair conversion device, characterized in that, It includes a pair of crutches that can transform between cane form and wheelchair form; each crutches includes a crutches body (1), the crutches body (1) includes a central base column (11) that can directly contact the ground and support frames (12) respectively provided on both sides of the central base column (11); each crutches body (1) is provided with a foldable seat plate (2) and a foldable wheelchair support rod (3), the top of each wheelchair support rod (3) is provided with a roller (4) that can move on the bottom surface, and the wheelchair support rod (3) is provided with a foldable foot pedal (31) at the end near the roller (4); One of the canes has a locking element (5) at the bottom of the seat plate (2), and the other cane has a locking engagement element (6) at the bottom of the seat plate (2) that can cooperate with the locking element (5) to fix it; one of the canes has a stretchable backrest (7) on the cane body (1), and the other cane has a backrest engagement element (8) for fixing the backrest (7) on the cane body (1). Each of the support frames (12) is provided with a first rotating mounting seat (17), and each of the central bottom columns (11) is provided with a second rotating mounting seat (18); both the seat plate (2) and the support rod (3) are connected with spring pins (9), wherein the seat plate (2) can be fixed to the first rotating mounting seat (17) by means of the spring pins (9), and the support rod (3) can be fixed to the second rotating mounting seat (18) by means of the spring pins (9); The second rotating mounting base (18) is centrally symmetrically arranged at the same horizontal height as the central base column (11). Each of the second rotating mounting bases (18) has a second main hole (181) and several second adjustment holes (182). The wheelchair support rod (3) is rotated by a second rotating shaft (183) that passes through the end of the wheelchair support rod (3) and cooperates with the second main holes (181) on both sides. The wheelchair support rod (3) can switch between the storage state and the use state by the cooperation of the spring pin (9) and the second adjustment hole (182). The spring pin (9) includes a pull rod (91), a hollow bolt (92), and a spring (93); the pull rod (91) includes a pin (911), a pull portion (912) at one end of the pin (911), and a limiting portion (913) at the other end of the pin (911); the hollow bolt (92) is sleeved between the pull portion (912) and the limiting portion (913); the spring (93) is sleeved between the hollow bolt (92) and the limiting portion (913), and both ends of the spring (93) abut against the hollow bolt (92) and the limiting portion (913) respectively; the limiting portion (913) of the spring pin (9) can be inserted into the first rotating mounting base (17) or the second rotating mounting base (18) and limited and fixed; In the cane form, the seat (2), backrest (7) and upward-folding wheelchair support rod (3) are all in a stowed state, and the bottom of the cane is in direct contact with the ground; In wheelchair mode, the seat plate (2) is adjusted to the use state by spring pin (9) and the two seat plates (2) are connected and fixed by locking member (5) and locking fitting member (6). The backrest (7) is connected with the corresponding backrest fitting member (8). The wheelchair support rod (3) is folded down by spring pin (9) so that the roller (4) is in direct contact with the ground.

2. The adaptive cane / wheelchair conversion device according to claim 1, characterized in that, The top of the support frame (12) is connected to a crossbeam (13), and the middle of the support frame (12) is connected to a handle (14).

3. The adaptive cane / wheelchair conversion device according to claim 2, characterized in that, The bottom of the central base column (11) is provided with an anti-slip support pad (15). The crossbeam (13) is equipped with an armpit pad (16), and the armpit pad (16) has an arc surface that fits the armpit.

4. The adaptive cane / wheelchair conversion device according to claim 1, characterized in that, The cane body (1) is provided with a first rotating mounting seat (17) on each of the two support frames (12). The first rotating mounting seat (17) is provided with a first main hole (171) and at least two first adjustment holes (172). The seat plate (2) includes a seat plate support plate (21) and a seat cushion (22), wherein the end of the seat plate support plate (21) is provided with a rotating connecting plate (23). The rotating connecting plate (23) rotates through the first rotating shaft (173) that cooperates with the first main hole (171) on both sides. The rotating connecting plate (23) is connected to the first adjusting hole (172) through the spring pull pin (9) to adjust the seat plate (2) to switch between the storage state and the use state.

5. The adaptive cane / wheelchair conversion device according to claim 1, characterized in that, The locking component (5) includes a central knob (51) and a semi-circular ring (52), and the central knob (51) and the semi-circular ring (52) are connected by a connecting rod (53); The locking component (6) includes an annular positioning component (61) located at the bottom of the base plate (2) and an arc-shaped slot (62) with the same center as the annular positioning component (61). The semi-circular ring (52) of the locking component (5) can engage with the arc-shaped slot (62) to achieve locking under the rotation of the central knob (51).

6. The adaptive cane / wheelchair conversion device according to claim 1, characterized in that, The backrest (7) includes a stretchable support fabric (71) and a storage slot (72) provided on the support frame (12) for rolling up and storing the stretchable support fabric (71). The stretchable support fabric (71) has a snap-fit ​​post (73) at its stretch end, and the backrest fitting (8) has a snap-fit ​​groove (81) that can snap-fit ​​with the snap-fit ​​post (73).

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