Wheelchair storage device with anti-falling mechanism

Abstract

The invention discloses a wheelchair storage device with an anti-falling mechanism, and relates to the technical field of anti-falling mechanisms, the wheelchair storage device comprises a wheelchair storage device main body; a base plate is installed outside a rotating shaft of the wheelchair storage device body, and a plurality of falling protectors are arranged on the front face of the base plate. The anti-falling device comprises a shell, two short-shaft sleeves and a long-shaft sleeve are rotationally connected to the interior of the shell, a winding wheel is fixedly connected to the exterior of the long-shaft sleeve, an anti-falling belt is wound around the exterior of the winding wheel, a buckle is fixedly connected to the free end of the anti-falling belt, and a locking device is installed on the exterior of the shell. A short connecting shaft and a long connecting shaft are sleeved with the short shaft sleeve and the long shaft sleeve respectively, and a linkage device is arranged between the short connecting shaft and the long connecting shaft. The anti-falling belt is connected with the wheelchair, anti-falling constraint is provided for the wheelchair, and therefore the wheelchair is prevented from falling from the storage device; and stable power is provided for winding of the anti-falling belt through the winding motor, the anti-falling belt can be automatically wound, and the anti-falling effect of the wheelchair is further improved.

Description

Technical Field

[0001] This invention belongs to the field of fall protection mechanism technology, and in particular relates to a wheelchair storage device with a fall protection mechanism. Background Technology

[0002] With the accelerating aging of the population and the increasing demand for rehabilitation medicine, wheelchairs, as an important means of transportation for people with mobility impairments, are being used more and more frequently in homes, hospitals, nursing homes, and public service venues. However, wheelchairs are large and have a special structure. If they are left unattended, they will not only occupy a lot of ground space and affect the passage efficiency of people and other equipment, but may also cause damage to wheelchair parts or create safety hazards due to collisions. Wheelchair storage devices have emerged to address this issue. Their core function is to provide dedicated storage space for wheelchairs. By hanging them on the wall or suspending them, the wheelchairs can be separated from the ground, which can effectively save ground space, keep the environment clean and orderly, and provide proper protection for the wheelchairs.

[0003] For example, Chinese patent application CN119503281A discloses a wheelchair storage device, including a wall-mounting frame, a swing connecting frame, and a storage rack for storing a wheelchair. The wall-mounting frame is equipped with a traction device for controlling the swinging movement of the swing connecting frame. The storage rack is connected to the swing connecting frame to move in accordance with the swinging movement of the swing connecting frame, resulting in changes in height. The storage rack includes a base frame for supporting the wheelchair and booms on both sides of the base frame. The swing connecting frame includes a cantilever for suspending the storage rack and a connecting arm hinged to the wall-mounting frame. One end of the cantilever is connected to the connecting arm, and the other end is hinged to the boom, so that when the connecting arm is driven by the traction device to swing, the base frame remains horizontal. Using this invention, wheelchair storage is convenient, easy to access, and does not occupy floor space.

[0004] However, if the aforementioned device is subjected to external interference such as accidental collisions or vibrations during the storage or retrieval of the wheelchair, it may disrupt the balance of the storage rack and cause it to fall. Since the wheelchair itself has a certain weight, a fall could not only damage the wheelchair equipment but also injure people around it.

[0005] To address these issues, we provide a wheelchair storage device with a fall protection mechanism. Summary of the Invention

[0006] The purpose of this invention is to provide a wheelchair storage device with a fall prevention mechanism. The fall prevention belt and buckle of the fall prevention device enable the wheelchair to be quickly connected and fixed. With the clutch control of the linkage and chuck, the power output of the winding motor and the tension monitoring of the torque sensor, a stable fall prevention constraint is formed, which solves the problem of existing wheelchair storage devices being prone to falling.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: The present invention is a wheelchair storage device with a fall prevention mechanism, comprising a wheelchair storage device body; a base plate is mounted on the outside of the rotating shaft of the wheelchair storage device body, and a plurality of fall prevention devices for preventing the wheelchair from falling are provided on the front side of the base plate. Multiple protrusions are fixed at equal intervals on the front side of the substrate, and a transversely penetrating drive shaft is rotatably connected inside the protrusions. The fall arrestor includes a housing fixedly connected to the front of a base plate, and the housing is fixedly connected between two adjacent protrusions. Inside the housing, two horizontally opposite short shaft sleeves and a long shaft sleeve are rotatably connected. A chuck is fixedly connected between the short shaft sleeves and the long shaft sleeves. A winding wheel is fixedly connected to the outside of the long shaft sleeve. A fall arrestor belt is wound around the outside of the winding wheel. A buckle for connecting a wheelchair is fixedly connected to the free end of the fall arrestor belt. A locking device for limiting the rotation of the winding wheel is installed on the outside of the housing. A short connecting shaft and a long connecting shaft are respectively sleeved inside the short shaft sleeves and the long shaft sleeves. The opposite ends of the short connecting shafts and the long connecting shafts are respectively connected to adjacent drive shafts. A linkage for controlling the connection or disconnection with the chuck is provided between the short connecting shafts and the long connecting shafts.

[0008] The present invention is further configured such that a winding motor and a torque sensor are respectively fixedly connected to the opposite sides of the protrusions located at both ends of the substrate among the plurality of protrusions, and the corresponding drive shafts are respectively installed at the output end of the winding motor and the input end of the torque sensor.

[0009] The present invention is further configured such that the outer and inner circumferences of the chuck are respectively provided with a plurality of inner insertion holes and a plurality of outer insertion holes at equal intervals.

[0010] The present invention is further configured such that the linkage includes a central seat fixedly connected between the short connecting shaft and the long connecting shaft, and a chuck rotatably connected to the outside of the central seat. The two ends of the central seat are respectively provided with an installation port and a first slide rail. A top pressure slide rail is connected between the installation port and the first slide rail. The interior of the central seat is provided with a second slide rail that communicates with the top pressure slide rail at equal intervals along the circumference, and the second slide rail corresponds to the inner insertion hole.

[0011] The present invention is further configured such that a first electromagnet is installed inside the mounting port, a top column is slidably connected inside the top pressure slide, one end of the top column facing the first electromagnet is tapered, the other end of the top column is fixedly connected to a baffle that is slidably sleeved inside the first slide, and a first return spring is movably sleeved on the outside of the top column.

[0012] The present invention is further configured such that a connecting pin is movably sleeved inside the second slide, a retaining ring that fits against the inner wall of the second slide is fixedly connected to the outside of the connecting pin, and a second return spring located on the side of the retaining ring away from the top column is movably sleeved outside the connecting pin.

[0013] The invention is further configured such that the locking device includes a spring pin fixedly connected to the outside of the housing, the pin of the spring pin being movably inserted into the corresponding external insertion hole under the push of the spring, and a second electromagnet for attracting the pin of the spring pin being fixedly connected to the end of the spring pin away from the housing.

[0014] The present invention is further configured such that a fixing seat is fixedly connected to the back of the substrate and installed outside the rotating shaft of the main body of the wheelchair storage device.

[0015] The present invention is further configured such that a button switch is installed on the front of each of the plurality of protrusions, and when the button switch is pressed, the first electromagnet and the second electromagnet are de-energized and energized respectively.

[0016] The invention is further configured such that a control box is fixedly connected to the outside of one of the booms of the wheelchair storage device body, and the control box is equipped with a control device for controlling the operation of the winding motor, the first electromagnet and the second electromagnet, and for receiving and processing torque sensor and push-button switch signals.

[0017] The present invention has the following beneficial effects: 1. The present invention provides a fall arrestor with a fall arrestor belt and buckle on the substrate, which can quickly connect the fall arrestor belt to the wheelchair, providing fall arrest restraint for the wheelchair and thus preventing the wheelchair from falling off the storage device.

[0018] 2. This invention provides stable power for the anti-fall belt to be wound up by a winding motor. With the rigid connection structure between the linkage and the chuck, the anti-fall belt can be wound up automatically. The torque sensor monitors the torque of the transmission shaft in real time and converts it into anti-fall belt tension data. With the preset safety threshold in the control box, the tension of the anti-fall belt can be controlled. This avoids both insufficient tension causing the wheelchair to loosen and excessive tension causing the anti-fall belt to break. The anti-fall belt is kept in the optimal anti-fall tension state at all times, which further improves the anti-fall effect of the wheelchair.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the main body of the present invention.

[0023] Figure 3 This is a schematic diagram of the substrate structure of the present invention.

[0024] Figure 4 This is a schematic diagram of the internal structure of the outer casing of the present invention.

[0025] Figure 5 This is a cross-sectional structural schematic diagram of the fall arrestor of the present invention.

[0026] Figure 6 This is a schematic diagram of the chuck structure of the present invention.

[0027] Figure 7 This is a cross-sectional view of the central seat of the present invention.

[0028] Figure 8 This is a cross-sectional view of the linkage structure of the present invention.

[0029] Figure 9 for Figure 3 A magnified structural diagram of point A in the middle.

[0030] Figure 10 for Figure 5 A magnified structural diagram at point B in the middle.

[0031] Figure 11 for Figure 8 A magnified structural diagram at point C.

[0032] The attached diagram lists the components represented by each number as follows: 100, Base plate; 101, Protrusion; 102, Drive shaft; 200, Fall arrestor; 201, Housing; 202, Linkage device; 202a, Center seat; 202a-1, Top pressure slide; 202a-2, Mounting port; 202a-3, First slide; 202a-4, Second slide; 202b, Top post; 202c, Baffle; 202d, First return spring; 202e, First electromagnet; 202f, Connecting pin; 202g, Retaining ring; 202h, Second return spring; 203. Short connecting shaft; 204. Long connecting shaft; 205. Chuck; 205a. Inner insertion hole; 205b. Outer insertion hole; 206. Short shaft sleeve; 207. Long shaft sleeve; 208. Rewinding wheel; 209. Anti-fall belt; 210. Buckle; 211. Locking device; 211a. Spring pin; 211b. Second electromagnet; 300. Fixing base; 400. Rewinding motor; 500. Torque sensor; 600. Control box; 700. Push-button switch; 800. Wheelchair storage device main body. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Specific Implementation Example 1 Please see Figures 1 to 6 and Figure 10 The present invention is a wheelchair storage device with a fall prevention mechanism, including a wheelchair storage device body 800; a base plate 100 is mounted on the outside of the rotating shaft of the wheelchair storage device body 800, and a plurality of fall prevention devices 200 for preventing the wheelchair from falling are provided on the front side of the base plate 100. Multiple protrusions 101 are fixedly arranged at equal intervals on the front side of the substrate 100, and a transversely penetrating drive shaft 102 is rotatably connected inside the protrusions 101. The fall arrestor 200 includes a housing 201 fixedly connected to the front side of the base plate 100, and the housing 201 is fixedly connected between two adjacent protrusions 101. Inside the housing 201, two horizontally opposing short shaft sleeves 206 and long shaft sleeves 207 are rotatably connected. A chuck 205 is fixedly connected between the short shaft sleeves 206 and long shaft sleeves 207. A winding wheel 208 is fixedly connected to the outside of the long shaft sleeve 207. A fall arrestor belt 209 is wound around the outside of the winding wheel 208. A buckle 210 for connecting a wheelchair is fixedly connected to the free end of the fall arrestor belt 209. A locking device 211 for restricting the rotation of the winding wheel 208 is installed on the outside of the housing 201. Short connecting shafts 203 and long connecting shafts 204 are respectively sleeved inside the short shaft sleeves 206 and long shaft sleeves 207, and the short connecting shafts 203 and long connecting shafts 204 are opposite to each other. One end is connected to the adjacent drive shaft 102. A linkage 202 for controlling the connection or disconnection with the chuck 205 is provided between the short connecting shaft 203 and the long connecting shaft 204. The outer shell 201 is fixed between adjacent protrusions 101 to achieve a stable connection between the fall arrestor 200 and the base plate 100, while protecting the internal components and preventing dust and impurities from affecting operation. The fall arrestor belt 209 can fix the wheelchair to prevent it from falling and injuring people or causing damage. The buckle 210 can quickly connect with the wheelchair. The lock 211 can restrict the rotation of the winding wheel 208 when needed to prevent the fall arrestor belt 209 from accidentally loosening. The connection between the short connecting shaft 203, the long connecting shaft 204 and the drive shaft 102 allows power to be transmitted to the fall arrestor 200. The linkage 202 realizes the connection or disconnection with the chuck 205, thereby facilitating the switching of working states as needed.

[0035] Specifically, the outer and inner circumferences of the chuck 205 are provided with multiple inner insertion holes 205a and multiple outer insertion holes 205b at equal intervals. The inner insertion holes 205a provide connection points for the linkage 202, and the outer insertion holes 205b cooperate with the locker 211 to lock the chuck 205.

[0036] Furthermore, the locking device 211 includes a spring pin 211a fixedly connected to the outside of the housing 201. The pin of the spring pin 211a is movably inserted into the corresponding external insertion hole 205b under the push of the spring. The end of the spring pin 211a facing away from the housing 201 is fixedly connected to a second electromagnet 211b for attracting the pin of the spring pin 211a. Under the action of the spring, the spring pin 211a can automatically insert into the external insertion hole 205b, realizing the passive locking of the chuck 205 and improving the safety in non-working state or emergency situation. When the second electromagnet 211b is energized, it can attract the pin of the spring pin 211a, causing it to disengage from the external insertion hole 205b, thereby releasing the lock. Each of the multiple protrusions 101 has a push-button switch 700 installed on its front side. When the push-button switch 700 is pressed, the first electromagnet 202e and the second electromagnet 211b are de-energized and energized respectively. Pressing the push-button switch 700 synchronously controls the corresponding first electromagnet 202e to de-energize and the second electromagnet 211b to energize, thereby realizing the disconnection of the linkage 202 from the chuck 205 and the unlocking of the lock 211.

[0037] The operation process of this embodiment is as follows: When it is necessary to fix the wheelchair, first press the button switch 700 on the protrusion 101 next to the fall arrester 200. At this time, the first electromagnet 202e connected to the linkage 202 of the fall arrester 200 is de-energized, and the second electromagnet 211b in the locking device 211 is energized. After the second electromagnet 211b is energized, it generates an attraction force, which pulls the pin of the spring pin 211a out of the outer insertion hole 205b of the chuck 205, releasing the lock 211 from the rotation restriction of the winding wheel 208. After the first electromagnet 202e is de-energized, it loses its electromagnetic attraction force. The first return spring 202d inside the linkage 202 pushes the top column 202b to reset. The top pressure of the top column 202b on the connecting pin 202f disappears. The second return spring 202h drives the connecting pin 202f to disengage from the inner insertion hole 205a of the chuck 205, so that the linkage 202 is disconnected from the chuck 205. After the connection is established, the staff can pull the buckle 210 at the free end of the fall arrestor belt 209 to quickly connect it to the fixing point of the wheelchair. After the connection is completed, the button switch 700 is released, the first electromagnet 202e is re-energized and attracts the top column 202b. The top column 202b pushes the connecting pin 202f into the inner insertion hole 205a, realizing the connection between the linkage 202 and the chuck 205. The second electromagnet 211b is de-energized, and the pin of the spring pin 211a is automatically inserted into the corresponding outer insertion hole 205b under the action of the spring, completing the locking of the fall arrestor belt 209 and realizing the stable fixation of the wheelchair.

[0038] Example 2 Please see Figures 1 to 11 Based on the first specific embodiment, among the multiple protrusions 101, the opposite sides of the protrusions 101 located at both ends of the substrate 100 are respectively fixedly connected to a winding motor 400 and a torque sensor 500, and the corresponding drive shafts 102 are respectively installed at the output end of the winding motor 400 and the input end of the torque sensor 500. The winding motor 400 provides a power source for the drive shaft 102, thereby driving the specific anti-fall belt 209 to wind up; the torque sensor 500 can detect the torque change of the drive shaft 102 and convert it into monitoring of the tension of the anti-fall belt 209, which can ensure that the anti-fall belt 209 effectively tightens and fixes the wheelchair, and avoid excessive tension that could cause the anti-fall belt 209 to break. The linkage 202 includes a center seat 202a fixedly connected between the short connecting shaft 203 and the long connecting shaft 204, and a chuck 205 rotatably connected to the outside of the center seat 202a. The two ends of the center seat 202a are respectively provided with a mounting port 202a-2 and a first slide rail 202a-3. A top pressure slide rail 202a-1 is connected between the mounting port 202a-2 and the first slide rail 202a-3. The interior of the center seat 202a is provided with a second slide rail 202a-4 equidistantly along the circumference, which communicates with the top pressure slide rail 202a-1. The second slide rail 202a-4 corresponds to the inner insertion hole 205a. The fixing of the center seat 202a to the short connecting shaft 203 and the long connecting shaft 204 and the rotatable connection with the chuck 205 provide an installation reference for each component.

[0039] Specifically, a first electromagnet 202e is installed inside the mounting port 202a-2, and a top column 202b is slidably connected inside the top pressure slide 202a-1. One end of the top column 202b facing the first electromagnet 202e is tapered, and the other end of the top column 202b is fixedly connected to a baffle 202c that is slidably sleeved inside the first slide 202a-3. A first return spring 202d is movably sleeved on the outside of the top column 202b. The first electromagnet 202e can control the movement of the top column 202b through electromagnetic attraction. The tapered end design of the top column 202b facilitates the conversion of axial force into radial force, which pushes the connecting pin 202f to move. The first return spring 202d can push the top column 202b to reset when the first electromagnet 202e is de-energized.

[0040] Furthermore, a connecting pin 202f is movably sleeved inside the second slide rail 202a-4. A retaining ring 202g that fits against the inner wall of the second slide rail 202a-4 is fixedly connected to the outside of the connecting pin 202f. A second return spring 202h located on the side of the retaining ring 202g away from the top column 202b is movably sleeved outside the connecting pin 202f. The connecting pin 202f can be inserted into the inner insertion hole 205a of the chuck 205 under the push of the top column 202b, realizing the connection between the linkage 202 and the chuck 205. The second return spring 202h can push the connecting pin 202f out of the inner insertion hole 205a when the top column 202b is reset. The main body 800 of the wheelchair storage device has a control box 600 fixedly connected to one of its booms. The control box 600 contains control equipment for controlling the operation of the winding motor 400, the first electromagnet 202e and the second electromagnet 211b, as well as receiving and processing signals from the torque sensor 500 and the push-button switch 700.

[0041] The operation process of this embodiment is as follows: When it is necessary to rewind the fall arrestor 209, a control signal is first sent through the control box 600 to energize the first electromagnet 202e and the second electromagnet 211b of the target fall arrestor 200. The energized second electromagnet 211b attracts the spring pin 211a, causing it to disengage from the outer insertion hole 205b of the chuck 205, thus releasing the rotation lock of the winding wheel 208. The energized first electromagnet 202e generates a suction force, attracting the top column 202b to move towards the mounting opening 202a-2. The tapered end of column 202b pushes the connecting pin 202f inside the second slide rail 202a-4 outward, inserting it into the corresponding inner insertion hole 205a of chuck 205, thus achieving a rigid connection between the linkage 202 and chuck 205. Subsequently, control box 600 controls the start of winding motor 400, which drives drive shaft 102 to rotate. Drive shaft 102 transmits power to center seat 202a through short connecting shaft 203 and long connecting shaft 204. Center seat 202a drives chuck 202 through connecting pin 202f. 05. The chuck 205 rotates synchronously, driving the long shaft sleeve 207 and the winding wheel 208 to rotate, beginning the winding of the fall arrestor belt 209. During this process, the torque sensor 500 detects the torque change of the end drive shaft 102 in real time and transmits the signal to the control box 600. The control box 600 converts the torque signal into tension data for the fall arrestor belt 209. When the tension reaches the preset safety threshold, the control box 600 issues a stop signal, the winding motor 400 stops running, and simultaneously de-energizes the first electromagnet 202e. When the second electromagnet 211b is de-energized and the first electromagnet 202e is de-energized, the first return spring 202d pushes the top column 202b to reset, and the connecting pin 202f disengages from the inner insertion hole 205a under the action of the second return spring 202h, and the linkage 202 is disconnected from the chuck 205; after the second electromagnet 211b is de-energized, the spring pin 211a inserts into the outer insertion hole 205b, re-locks the chuck 205 and the winding wheel 208, and completes the automatic winding and locking of the anti-fall belt 209, thereby preventing the corresponding wheelchair from falling.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A wheelchair storage device with a fall protection mechanism, comprising a wheelchair storage device body (800); characterized in that: A base plate (100) is mounted on the outside of the rotating shaft of the main body (800) of the wheelchair storage device, and a plurality of anti-fall devices (200) for preventing the wheelchair from falling are provided on the front side of the base plate (100). The front side of the substrate (100) is provided with a plurality of protrusions (101) at equal intervals, and the interior of the protrusions (101) is rotatably connected to a transversely penetrating drive shaft (102). The fall arrester (200) includes a housing (201) fixedly connected to the front of the base plate (100), and the housing (201) is fixedly connected between two adjacent protrusions (101). Inside the housing (201) are two horizontally opposing short shaft sleeves (206) and long shaft sleeves (207). A chuck (205) is fixedly connected between the short shaft sleeves (206) and the long shaft sleeves (207). A winding wheel (208) is fixedly connected to the outside of the long shaft sleeves (207). A fall arrester belt (209) is wound around the outside of the winding wheel (208). The free end of the housing (201) is fixedly connected with a buckle (210) for connecting the wheelchair. The outer side of the housing (201) is equipped with a locker (211) for limiting the rotation of the winding wheel (208). The short shaft sleeve (206) and the long shaft sleeve (207) are respectively fitted with a short connecting shaft (203) and a long connecting shaft (204). The opposite ends of the short connecting shaft (203) and the long connecting shaft (204) are respectively connected to the adjacent drive shaft (102). A linkage (202) for controlling the connection or disconnection with the chuck (205) is provided between the short connecting shaft (203) and the long connecting shaft (204).

2. A wheelchair storage device with a fall prevention mechanism according to claim 1, characterized in that, Among the plurality of protrusions (101), the opposite sides of the protrusions (101) located at both ends of the substrate (100) are respectively fixedly connected to a winding motor (400) and a torque sensor (500), and the corresponding drive shafts (102) are respectively installed at the output end of the winding motor (400) and the input end of the torque sensor (500).

3. A wheelchair storage device with a fall prevention mechanism according to claim 1, characterized in that, The chuck (205) has multiple inner insertion holes (205a) and multiple outer insertion holes (205b) equidistantly spaced on its outer and inner circumferences, respectively.

4. A wheelchair storage device with a fall prevention mechanism according to claim 3, characterized in that, The linkage (202) includes a center seat (202a) fixedly connected between a short connecting shaft (203) and a long connecting shaft (204), and a chuck (205) rotatably connected to the outside of the center seat (202a). The two ends of the center seat (202a) are respectively provided with an installation port (202a-2) and a first slide rail (202a-3). A top pressure slide rail (202a-1) is connected between the installation port (202a-2) and the first slide rail (202a-3). The interior of the center seat (202a) is provided with a second slide rail (202a-4) equidistantly along the circumference, which is connected to the top pressure slide rail (202a-1). The second slide rail (202a-4) corresponds to the inner insertion hole (205a).

5. A wheelchair storage device with a fall prevention mechanism according to claim 4, characterized in that, The first electromagnet (202e) is installed inside the mounting port (202a-2). The top column (202b) is slidably connected inside the top pressure slide (202a-1). One end of the top column (202b) facing the first electromagnet (202e) is tapered. The other end of the top column (202b) is fixedly connected to a baffle (202c) that is slidably sleeved inside the first slide (202a-3). A first return spring (202d) is movably sleeved on the outside of the top column (202b).

6. A wheelchair storage device with a fall prevention mechanism according to claim 4, characterized in that, The second slide (202a-4) is internally fitted with a connecting pin (202f), and the connecting pin (202f) is externally fixedly connected with a retaining ring (202g) that fits against the inner wall of the second slide (202a-4). The connecting pin (202f) is externally fitted with a second return spring (202h) located on the side of the retaining ring (202g) away from the top column (202b).

7. A wheelchair storage device with a fall protection mechanism according to claim 3, characterized in that, The locking device (211) includes a spring pin (211a) fixedly connected to the outside of the housing (201). The pin of the spring pin (211a) is movably inserted into the corresponding external insertion hole (205b) under the push of the spring. The end of the spring pin (211a) away from the housing (201) is fixedly connected to a second electromagnet (211b) for attracting the pin of the spring pin (211a).

8. A wheelchair storage device with a fall protection mechanism according to claim 1, characterized in that, The back of the substrate (100) is fixedly connected to a mounting base (300) installed outside the pivot of the wheelchair storage device body (800).

9. A wheelchair storage device with a fall protection mechanism according to claim 4 or 7, characterized in that, Each of the protrusions (101) has a push-button switch (700) mounted on its front side. When the push-button switch (700) is pressed, the first electromagnet (202e) and the second electromagnet (211b) are de-energized and energized, respectively.

10. A wheelchair storage device with a fall protection mechanism according to claim 2, characterized in that, The main body (800) of the wheelchair storage device has a control box (600) fixedly connected to one of the booms. The control box (600) is equipped with a control device for controlling the operation of the winding motor (400), the first electromagnet (202e) and the second electromagnet (211b), as well as receiving and processing signals from the torque sensor (500) and the push-button switch (700).

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