Safety wheelchair

Abstract

The invention discloses a safety wheelchair, and belongs to the technical field of medical auxiliary instruments, the safety wheelchair comprises a wheelchair body, a foot anti-toppling structure for performing safety protection on the angle of a patient is arranged at the front position of the wheelchair body, and the foot anti-toppling structure is rotatably connected with the wheelchair body; a safety anti-toppling structure is arranged at the rear position of the wheelchair body and is in sliding fit with the wheelchair body, two symmetrically-arranged sponge armrests are arranged on the wheelchair body, and a body protection structure for conducting safety protection on the body of a patient is arranged between the two sponge armrests. The body protection structure is in sliding fit with the two sponge armrests on the wheelchair body; the safety anti-toppling structure is arranged, and in the using process, the posture of the wheelchair body can be adjusted according to the different angle positions of the wheelchair body on the uphill or downhill, so that the wheelchair body can be prevented from toppling.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and in particular to a safety wheelchair. Background Art

[0002] The wheelchair is an important tool for rehabilitation. It is not only a means of transportation for the physically disabled, but more importantly, it enables them to exercise and participate in social activities with the help of a wheelchair.

[0003] Most traditional wheelchairs adopt simple structural designs. When facing complex road conditions, such as going up and down slopes, crossing thresholds, and driving on uneven ground, they are prone to unstable center of gravity, which can lead to tipping. For example, when going up and down slopes, some ordinary wheelchairs are prone to tipping forward or backward due to the change in slope and the shift of center of gravity, especially when the patient moves or changes posture in the wheelchair, which is more likely to cause a tipping accident.

[0004] Lack of effective fall protection: Existing wheelchairs are relatively weak in fall protection design. When the wheelchair tips over, the patient often falls directly to the ground, which can easily cause physical injuries. Although some wheelchairs are equipped with simple protective devices such as seat belts, in actual use, these devices cannot completely and effectively prevent patients from falling. For example, when the wheelchair suddenly encounters an obstacle or collision, the patient may fall forward or sideways due to inertia, and ordinary seat belts may not be able to effectively limit the patient's body movement in time, resulting in falls and injuries.

[0005] Limitations of safety features: Although some wheelchairs have some safety features, such as brakes, these features are often not perfect or intelligent enough. For example, traditional handbrakes require manual operation by the patient, who may not be able to react in time in an emergency; the braking effect of some electric wheelchairs is not ideal on slippery roads or when driving at high speeds, posing a safety hazard. In addition, existing wheelchairs also have deficiencies in safety reminders, and are unable to promptly remind patients and people around them to pay attention to the safety status of the wheelchair, which can easily lead to accidents.

[0006] When the existing wheelchair is used to transport a patient, when facing an uphill or downhill road section, the patient's center of gravity will tilt forward or backward after sitting in the wheelchair, causing the wheelchair to tip over and the patient to fall off the wheelchair.

[0007] Therefore need to provide a kind of safety wheelchair for use. Summary of the invention

[0008] The embodiment of the present invention provides a safety wheelchair to solve the above-mentioned technical problems.

[0009] The embodiment of the present invention adopts the following technical scheme: a safe wheelchair, comprising a wheelchair body, wherein a foot anti-dumping structure for safely protecting the angle of a patient is provided at the front position of the wheelchair body, and the foot anti-dumping structure is rotatably connected to the wheelchair body; a safety anti-dumping structure is provided at the rear position of the wheelchair body, and the safety anti-dumping structure is slidably matched with the wheelchair body; two symmetrically arranged sponge armrests are provided on the wheelchair body, and a body protection structure for safely protecting the body of the patient is provided between the two sponge armrests, and the body protection structure is slidably matched with the two sponge armrests on the wheelchair body.

[0010] The present invention can limit and fix the patient's body position to prevent the patient from falling from the wheelchair body. The foot anti-dumping structure can adjust the position of the patient's feet and adjust the patient's center of gravity to be on the wheelchair body, so that the patient will not fall due to the center of gravity being biased forward or backward. The safety anti-dumping structure can adjust the posture of the wheelchair body according to the different angular positions of the wheelchair body on an uphill or downhill slope during use to prevent the wheelchair body from tipping over.

[0011] Furthermore, the foot anti-dumping structure includes a front footframe, a foot pedal, a placement frame rod and two damping telescopic rods. The front footframe is rotatably connected to the front part of the wheelchair body. Both ends of the front footframe are respectively provided with fixed plate screws. The front footframe is fixed to the front part of the wheelchair body by the two fixed plate screws. The placement frame rod is U-shaped, and the foot pedal is horizontally arranged on the placement frame rod. The tail ends of the two damping telescopic rods are respectively hinged to the two ends of the wheelchair body, and the telescopic ends of the two damping telescopic rods are respectively hinged to the two ends of the front footframe.

[0012] Furthermore, two plug-in holes are provided at the bottom of the front tripod, and a number of equally spaced mounting holes are provided at both ends of the placement rack rod. A plug-in pin is provided in the plug-in hole, and the front tripod is plugged into the placement rack rod through the plug-in pin rod, and the placement rack rod and the front tripod are slidably matched.

[0013] Furthermore, the safety anti-dump structure includes an anti-dump drive assembly and two anti-dump moving parts, the two anti-dump moving parts are symmetrically arranged at the rear of the wheelchair body, the anti-dump drive assembly is arranged on the wheelchair body and the anti-dump drive assembly can drive the positions of the two anti-dump moving parts to move on the wheelchair body.

[0014] Furthermore, the anti-dumping movable member includes a movable rod, which is slidably connected to the rear end of the wheelchair body, the movable rod is L-shaped, an auxiliary wheel is provided at the bottom of the movable rod, and a limiting groove is provided at the horizontal position of the movable rod.

[0015] Furthermore, the anti-dumping drive assembly includes an installation frame box, a rotating rod, a rotating handle, a first bevel gear and a second bevel gear. The installation frame box is arranged at a middle position of the rear part of the wheelchair body, the middle position of the rotating rod is rotatably connected to the installation frame box, the two ends of the rotating rod are rotatably connected to the two end positions of the wheelchair body, the rotating handle is rotatably connected to the installation frame box, the first bevel gear is connected to the rotating handle, the second bevel gear is connected to the rotating rod, the first bevel gear and the second bevel gear are transmission-connected, the two ends of the rotating rod are respectively provided with rotating gears, and the bottom of the moving rod is provided with a rotating gear plate, and the rotating gear and the rotating gear plate are meshed with each other.

[0016] Furthermore, the wheelchair body is provided with a limiting bolt passing through the upper limit rod on the moving rod.

[0017] Furthermore, the body protection structure includes a protective plate, and a first slider and a second slider are respectively provided at both ends of the protective plate, and the sponge armrests are respectively provided with sliding grooves for sliding cooperation of the first slider and the second slider, the protective plate is rotatably connected to the first slider, and two plug-in rods are provided at the bottom of the protective plate, and the second slider is provided with a socket for plugging and cooperation of the plug-in rods, and a vertically arranged airbag pad is provided on the protective plate.

[0018] Furthermore, an extended airbag plate is provided on the airbag cushion plate, and the extended airbag plate is rotatably connected to the airbag cushion plate. Two triangular stoppers are provided at both ends of the top of the protective plate, and the triangular stoppers are slidably connected to the top of the protective plate. The triangular stoppers are located on the side of the airbag cushion plate.

[0019] Furthermore, a through groove is provided on the side wall of the sponge armrest, a sliding block slidably matched is provided in the through groove, and threaded locking screws are provided on the first sliding block and the second sliding block respectively, and the locking screw is threadedly connected to the sliding block.

[0020] At least one of the above technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0021] Firstly, when adjusting the center of gravity of the patient's legs and feet, the present invention loosens the fixing plate screws at both ends of the two front foot frames, so that the front foot frames can be rotated on the wheelchair body, so that there is a certain angle between the front foot frames and the wheelchair body, and during the rotation of the front foot frames, the two damping telescopic rods can lock the angle between the front foot frames and the wheelchair body, and the damping telescopic rods can provide steady resistance during the angle rotation process, ensuring that the rotation action is not too hasty or violent.

[0022] Secondly, when the positions of the two auxiliary wheels are separated and adjusted, the present invention can rotate the handle to drive the first bevel gear to rotate, and the rotation of the first bevel gear will drive the second bevel gear to rotate so that the rotating rod rotates on the mounting frame and the wheelchair body, and the rotation of the rotating rod will drive the two rotating gears to rotate, and the rotation of the two rotating gears will respectively drive the two rotating gear plates to move, so that the two moving rods move horizontally on the wheelchair body, so that the two auxiliary wheels are separated from the wheelchair body, and the distance between the two auxiliary wheels and the wheelchair body is changed, so that the center of gravity of the wheelchair body is more stable when the patient goes uphill or downhill during use. When the wheelchair body turns or encounters external force impact, the larger spacing can increase the lateral stability of the wheelchair body, reduce the risk of rollover, and increase the safety of the wheelchair body.

[0023] Thirdly, in the present invention, the protective plate is rotated downward so that the two connecting rods at the bottom of the protective plate are inserted into the sockets on the second slider, so that the position of the protective plate is located between the two sponge armrests, and the position of the airbag pad on the protective plate will be in contact with the patient's chest position, limiting the patient's position on the wheelchair body and preventing the position from moving or changing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0025] Figure 1 The three-dimensional structure of the safety wheelchair of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 2 The three-dimensional structure of the safety wheelchair of the present invention is shown in FIG. Figure 2 ;

[0027] Figure 3 The three-dimensional structure of the safety wheelchair of the present invention is shown in FIG. Figure 3 ;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the foot anti-dumping structure of the present invention;

[0030] Figure 6 It is a schematic diagram of the partial structure of the foot anti-dumping structure in the present invention;

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of the safety anti-dumping structure in the present invention;

[0032] Figure 8 for Figure 7 Enlarged view of point B in the middle;

[0033] Fig. 9 It is a partial three-dimensional structural schematic diagram of the safety anti-dumping structure in the present invention;

[0034] Fig.10 It is a schematic diagram of the three-dimensional structure of the body protection structure of the present invention;

[0035] Fig.11 It is a schematic diagram of a partial three-dimensional structure of the body protection structure of the present invention;

[0036] Reference numerals

[0037] Wheelchair body 1, sponge armrest 11, slide groove 12, through groove 13, foot anti-dumping structure 2, front foot frame 21, foot pedal 22, placement frame rod 23, damping telescopic rod 24, mounting hole 25, plug pin 26, fixed plate screw 27, safety anti-dumping structure 3, anti-dumping drive assembly 31, mounting frame box 311, rotating rod 312, rotating handle 313, first bevel gear 314, second bevel gear 315, rotating gear 316, rotating gear plate 317, anti-dumping moving part 32, moving rod 321, auxiliary wheel 322, limiting groove 323, limiting bolt 33, body protection structure 4, protection plate 41, first slider 42, second slider 43, plug rod 44, airbag pad 45, lengthened airbag plate 46, triangular block 47, sliding block 48, locking screw 49. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] An embodiment of the present invention provides a safe wheelchair, comprising a wheelchair body 1, wherein a foot anti-dumping structure 2 for safely protecting the angle of a patient is provided at the front position of the wheelchair body 1, and the foot anti-dumping structure 2 is rotatably connected to the wheelchair body 1; a safety anti-dumping structure 3 is provided at the rear position of the wheelchair body 1, and the safety anti-dumping structure 3 is slidably matched with the wheelchair body 1; two symmetrically arranged sponge armrests 11 are provided on the wheelchair body 1, and a body protection structure 4 for safely protecting the body of the patient is provided between the two sponge armrests 11, and the body protection structure 4 is slidably matched with the two sponge armrests 11 on the wheelchair body 1.

[0041] During use, the body protection structure 4 is rotated to one side from the two sponge armrests 11 so that the patient sits on the wheelchair body 1, and then the body protection structure 4 is rotated and placed between the switch sponge armrests 11, which can limit and fix the patient's body position to prevent the patient from falling from the wheelchair body 1. The foot anti-dumping structure 2 can adjust the position of the patient's feet and adjust the patient's center of gravity to be on the wheelchair body 1, which will not cause the patient to fall due to the center of gravity being biased forward or backward. The safety anti-dumping structure 3 can adjust the posture of the wheelchair body 1 according to the different angles of the wheelchair body 1 when it is uphill or downhill during use to prevent the wheelchair body 1 from tipping over.

[0042] In this embodiment, the foot anti-dumping structure 2 includes a front foot frame 21, a foot pedal 22, a placement frame rod 23 and two damping telescopic rods 24. The front foot frame 21 is rotatably connected to the front part of the wheelchair body 1. The two ends of the front foot frame 21 are respectively provided with fixed plate screws 27. The front foot frame 21 is fixed to the front part of the wheelchair body 1 by the two fixed plate screws 27. The placement frame rod 23 is U-shaped, and the foot pedal 22 is horizontally arranged on the placement frame rod 23. The tail ends of the two damping telescopic rods 24 are respectively hinged to the two ends of the wheelchair body 1, and the telescopic ends of the two damping telescopic rods 24 are respectively hinged to the two ends of the front foot frame 21.

[0043] When adjusting the center of gravity of the patient's legs and feet, loosen the fixed plate screws 27 at both ends of the two front foot frames 21, so that the front foot frames 21 can rotate on the wheelchair body 1, so that there is a certain angle between the front foot frames 21 and the wheelchair body 1. During the rotation of the front foot frames 21, the two damping telescopic rods 24 can lock the angle between the front foot frames 21 and the wheelchair body 1. The damping telescopic rods 24 can provide stable resistance during the angle rotation process to ensure that the rotation action is not too hasty or violent. This makes the rotation process smoother and avoids the impact and damage to the connecting parts caused by sudden starts and stops. Due to the damping effect, the telescopic rod can maintain a relatively stable position when it is rotated to a specific angle, and the angle will not be easily changed due to external forces.

[0044] During use, the front leg frame 21 and the wheelchair body 1 can be placed at an optimal and comfortable angle based on the comfort of the patient's leg position and the different positions of the patient's center of gravity when sitting on the wheelchair body 1. After the position angle of the front leg frame 21 is determined, the two fixing plate screws 27 can be rotated to fix the position of the front leg frame 21.

[0045] In this embodiment, two plug-in holes are provided at the bottom of the front tripod 21, and a number of equally spaced mounting holes 25 are provided at both ends of the placement rack rod 23. A plug pin 26 is provided in the plug-in hole. The front tripod 21 is plugged into the placement rack rod 23 through the plug pin rod, and the placement rack rod 23 and the front tripod 21 are slidably matched.

[0046] When placing the patient's feet, the distance between the placement frame rod 23 and the front foot frame 21 can be adjusted according to the different leg lengths of the patient. During the adjustment, the two plug pins 26 are moved out of the plug holes and the mounting holes 25, so that the foot pedal 22 is located under the patient's feet when the patient is in a relaxed state.

[0047] Then, the two connecting pins 26 are respectively inserted into the front leg frame 21 and then into the corresponding mounting holes 25 on the placement frame rod 23, so that the position of the placement frame rod 23 is fixed on the front leg frame 21, so that the patient's legs can be stretched when sitting on the wheelchair body 1, and the patient's center of gravity can be completely placed on the wheelchair body 1 without placing the center of gravity on the foot pedal 22, thereby causing the wheelchair body 1 to tip over and affecting the safety of the patient riding the wheelchair body 1.

[0048] In this embodiment, the safety anti-dumping structure 3 includes an anti-dumping drive component 31 and two anti-dumping movable parts 32. The two anti-dumping movable parts 32 are symmetrically arranged at the rear of the wheelchair body 1. The anti-dumping drive component 31 is arranged on the wheelchair body 1 and the anti-dumping drive component 31 can drive the positions of the two anti-dumping movable parts 32 to move on the wheelchair body 1.

[0049] During the process of going uphill or downhill, the anti-dumping driving assembly 31 can be rotated to drive the distance between the two anti-dumping moving parts 32 and the wheelchair body 1 to improve stability.

[0050] When going uphill:

[0051] The auxiliary wheels 322 can provide additional support points to share the weight of the wheelchair body 1 and the patient, and prevent the front wheels of the wheelchair body 1 from tilting up and tipping over due to bearing too much weight.

[0052] The adjustable distance can be optimized according to factors such as the slope and the patient's weight to ensure a more reasonable distribution of support force and maintain the balance of the wheelchair body 1.

[0053] When going downhill:

[0054] The auxiliary wheels 322 help stabilize the rear portion of the wheelchair body 1 and prevent the wheelchair body 1 from tipping backwards due to the center of gravity being too far back.

[0055] By adjusting the distance between the auxiliary wheels 322, the support angle and area of ​​the rear part of the wheelchair can be changed to adapt to the downhill requirements of different slopes and enhance stability.

[0056] Enhanced adaptability

[0057] Different uphill or downhill scenes may have different slopes and road conditions, and the auxiliary wheels 322 with adjustable distances can allow the wheelchair body 1 to adapt to a variety of environments.

[0058] According to the weight of different patients and the load conditions of the wheelchair body 1 , the best anti-dumping effect can be achieved by adjusting the distance of the auxiliary wheels 322 , thereby improving the versatility of the wheelchair body 1 .

[0059] Improved handling

[0060] The presence of the auxiliary wheels 322 makes it easier for the patient to control the direction and speed of the wheelchair body 1 when pushing the wheelchair body 1 uphill or downhill.

[0061] The adjustable feature allows the patient to fine-tune the position of the auxiliary wheels 322 according to actual conditions to obtain a more comfortable and safer control experience and reduce the risk of tipping due to improper control.

[0062] In this embodiment, the anti-dumping movable member 32 includes a movable rod 321, which is slidably connected to the rear end of the wheelchair body 1, and the movable rod 321 is L-shaped. An auxiliary wheel 322 is provided at the bottom of the movable rod 321, and a limiting groove 323 is provided at the horizontal position of the movable rod 321; the wheelchair body 1 is provided with a limiting bolt 33 that passes through the upper limiting rod of the movable rod 321.

[0063] During use, the auxiliary wheel 322 can rotate at the bottom of the moving rod 321 to assist the movement of the wheelchair body 1. When the position of the auxiliary wheel 322 and the distance between the wheelchair body 1 are adjusted, the limiting groove 323 on the moving rod 321 can move on the limiting bolt 33. After the position is determined, the limiting bolt 33 can be rotated to fix the position between the moving rod 321 and the wheelchair body 1, and the positions of the two auxiliary wheels 322 are locked.

[0064] In this embodiment, the anti-dumping drive assembly 31 includes a mounting frame box 311, a rotating rod 312, a rotating handle 313, a first bevel gear 314 and a second bevel gear 315. The mounting frame box 311 is arranged at the middle position of the rear part of the wheelchair body 1. The middle position of the rotating rod 312 is rotatably connected to the mounting frame box 311. Both ends of the rotating rod 312 are rotatably connected to the two end positions of the wheelchair body 1. The rotating handle 313 is rotatably connected to the mounting frame box 311. The first bevel gear 314 is connected to the rotating handle 313. The second bevel gear 315 is connected to the rotating rod 312. The first bevel gear 314 and the second bevel gear 315 are transmission-connected. Rotating gears 316 are respectively provided at both ends of the rotating rod 312. A rotating gear plate 317 is provided at the bottom of the moving rod 321. The rotating gear 316 and the rotating gear plate 317 are meshed with each other.

[0065] When the positions of the two auxiliary wheels 322 are separated and adjusted, the rotating handle 313 can be rotated to drive the first bevel gear 314 to rotate. The rotation of the first bevel gear 314 will drive the second bevel gear 315 to rotate, so that the rotating rod 312 is rotated on the mounting frame box 311 and the wheelchair body 1. The rotation of the rotating rod 312 will drive the two rotating gears 316 to rotate. The rotation of the two rotating gears 316 will respectively drive the two rotating tooth plates 317 to move, so that the two moving rods 321 are moved horizontally on the wheelchair body 1, thereby separating the two auxiliary wheels 322 from the wheelchair body 1, and changing the distance between the two auxiliary wheels 322 and the wheelchair body 1. When the patient is going uphill or downhill when using the wheelchair, the center of gravity of the wheelchair body 1 is more stable.

[0066] When the wheelchair body 1 turns or encounters an external force impact, the larger spacing can increase the lateral stability of the wheelchair body 1, reduce the risk of rollover, and increase the safety of the wheelchair body 1.

[0067] In this embodiment, the body protection structure 4 includes a protection plate 41, and the two ends of the protection plate 41 are respectively provided with a first slider 42 and a second slider 43, and the sponge armrest 11 is respectively provided with a slide groove 12 for sliding cooperation of the first slider 42 and the second slider 43, and the protection plate 41 is rotatably connected to the first slider 42, and two plug-in rods 44 are provided at the bottom of the protection plate 41, and the second slider 43 is provided with a socket for plugging and cooperation of the plug-in rods 44, and the protection plate 41 is provided with a vertically arranged airbag cushion plate 45.

[0068] Before the patient sits on the wheelchair body 1, he lifts one end of the protective plate 41 so that the protective plate 41 rotates on the first slider 42, and the protective plate 41 is opened. After the patient sits on the wheelchair body 1;

[0069] The protective plate 41 is turned downward so that the two plug-in rods 44 at the bottom of the protective plate 41 are plugged into the sockets on the second slider 43, so that the protective plate 41 is located between the two sponge armrests 11, and the airbag pad 45 on the protective plate 41 is located against the patient's chest, limiting the patient's position on the wheelchair body 1 without any movement or change in position; especially when the user is on an inclined road, turning or encountering bumps, the protective plate 41 can provide additional resistance to ensure that the user is always in a safe position. Avoiding injuries caused by extending limbs

[0070] During the movement of the wheelchair, if the user's arms or hands are accidentally extended out of the armrests, they may collide with surrounding objects or be caught in the wheels, etc., causing serious injuries. The protective plate 41 can prevent the extension of limbs and reduce this risk.

[0071] During use, since each patient has a different body shape, in the process of protecting the patient, the first slider 42 and the second slider 43 can slide on the two sponge armrests 11 respectively, and the airbag pad 45 on the protective plate 41 can be moved to the patient's chest position for contact, so as to provide safe protection for patients of different body shapes and weights.

[0072] In this embodiment, an extended airbag plate 46 is provided on the airbag cushion plate 45, and the extended airbag plate 46 is rotatably connected to the airbag cushion plate 45. Two triangular stoppers 47 are provided at both ends of the top of the protective plate 41. The triangular stoppers 47 are slidably connected to the top of the protective plate 41, and the triangular stoppers 47 are located on the side of the airbag cushion plate 45.

[0073] During use, the extended airbag plate 46 can be rotated from a horizontal position to a vertical position according to the needs of the patient, and the positions of the two triangular stoppers 47 on the protective plate 41 are moved, and then the positions of the triangular stoppers 47 are moved to the position between the airbag cushion plate 45 and the extended airbag plate, so that the position of the extended airbag plate 46 will not be offset;

[0074] By increasing the area of ​​the airbag cushion plate 45 or enlarging the protection area, the enlarged airbag cushion can provide wider and more uniform support for the user's body. Compared with an airbag cushion with a smaller area, it can better fit the curve of the human body and reduce local pressure points.

[0075] The large airbag cushion plate 45 can better absorb vibration and impact force, providing a more comfortable riding experience for the user. During the movement of the wheelchair, the airbag cushion can buffer the bumps of the road, reduce the vibration of the body, and thus relieve fatigue.

[0076] It can better fix the user's body and prevent the body from sliding or tilting during the movement of the wheelchair. This is very important for users with limited mobility or poor balance, and can improve their safety in the wheelchair.

[0077] It can adapt to users of different body shapes. No matter they are tall or short, fat or thin, they can all get comfortable support to a certain extent.

[0078] In this embodiment, a through groove 13 is provided on the side wall of the sponge handrail 11, and a sliding block 48 is provided in the through groove 13 for sliding fit. The first sliding block 42 and the second sliding block 43 are respectively provided with a threaded locking screw 49, and the locking screw 49 is threadedly connected to the sliding block 48;

[0079] When the airbag cushion 45 on the protective plate 41 collides with the patient, the locking screw 49 can be rotated on the sliding block 48, so that the locking screw 49 can be rotated to the corresponding first slider 42 and second slider 43, thereby fixing the positions of the first slider 42 and second slider 43 in the through groove 13 in the two sponge armrests 11, and safety protection can be provided according to the different body shapes and weights of patients.

[0080] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A safety wheelchair, characterized in that: The wheelchair comprises a wheelchair body (1), wherein a foot anti-dumping structure (2) for safely protecting the angle of a patient is provided at the front of the wheelchair body (1), and the foot anti-dumping structure (2) is rotatably connected to the wheelchair body (1); A safety anti-dumping structure (3) is provided at the rear of the wheelchair body (1), and the safety anti-dumping structure (3) is slidably matched with the wheelchair body (1); The wheelchair body (1) is provided with two symmetrically arranged sponge armrests (11); A body protection structure (4) for safely protecting the patient's body is provided between the two sponge armrests (11), and the body protection structure (4) is slidably matched with the two sponge armrests (11) on the wheelchair body (1).

2. A safety wheelchair according to claim 1, characterized in that: The foot anti-dumping structure (2) comprises a front footrest (21), a foot pedal (22), a placement rack rod (23) and two damping telescopic rods (24); The front leg frame (21) is rotatably connected to the front part of the wheelchair body (1), and two ends of the front leg frame (21) are respectively provided with fixed disc screw rods (27), and the front leg frame (21) is fixed to the front part of the wheelchair body (1) through the two fixed disc screw rods (27); The placement rack (23) is arranged in a U shape, and the foot pedal (22) is arranged horizontally on the placement rack (23); The tail ends of the two damping telescopic rods (24) are respectively hinged to the two ends of the wheelchair body (1), and the telescopic ends of the two damping telescopic rods (24) are respectively hinged to the two ends of the front footrest (21).

3. A safety wheelchair according to claim 2, characterized in that: Two plug-in holes are provided below the front leg frame (21), and a plurality of mounting holes (25) are provided at equal intervals at both ends of the placement frame rod (23); A plug pin (26) is provided in the plug hole, and the front leg frame (21) is plugged onto the placement frame rod (23) via a plug pin rod; The placement frame rod (23) is slidably matched with the front leg frame (21).

4. A safety wheelchair according to claim 1, characterized in that: The safety anti-dumping structure (3) comprises an anti-dumping driving assembly (31) and two anti-dumping moving parts (32); The two anti-dumping moving parts (32) are symmetrically arranged at the rear of the wheelchair body (1), and the anti-dumping driving assembly (31) is arranged on the wheelchair body (1); The anti-dumping driving assembly (31) can drive the positions of the two anti-dumping moving parts (32) to move on the wheelchair body (1).

5. A safety wheelchair according to claim 4, characterized in that: The anti-dumping moving member (32) comprises a moving rod (321), and the moving rod (321) is slidably connected to the rear end of the wheelchair body (1); The moving rod (321) is arranged in an L shape, an auxiliary wheel (322) is arranged at the bottom of the moving rod (321), and a limiting groove (323) is arranged at a horizontal position of the moving rod (321).

6. A safety wheelchair according to claim 5, characterized in that: The anti-dumping driving assembly (31) comprises a mounting frame box (311), a rotating rod (312), a rotating handle (313), a first bevel gear (314) and a second bevel gear (315); The installation frame box (311) is arranged at a middle position of the rear part of the wheelchair body (1), and the middle position of the rotating rod (312) is rotatably connected to the installation frame box (311); The two ends of the rotating rod (312) are rotatably connected to the two ends of the wheelchair body (1), and the rotating handle (313) is rotatably connected to the installation frame box (311); The first bevel gear (314) is connected to the rotating handle (313), the second bevel gear (315) is connected to the rotating rod (312), and the first bevel gear (314) and the second bevel gear (315) are transmission-connected; The two ends of the rotating rod (312) are respectively provided with rotating gears (316), and the bottom of the moving rod (321) is provided with a rotating toothed plate (317), and the rotating gear (316) and the rotating toothed plate (317) are meshed with each other.

7. A safety wheelchair according to claim 6, characterized in that: The wheelchair body (1) is provided with a limiting bolt (33) passing through the upper limiting rod of the moving rod (321).

8. The safety wheelchair according to claim 1, characterized in that: The body protection structure (4) comprises a protection plate (41), and two ends of the protection plate (41) are respectively provided with a first sliding block (42) and a second sliding block (43); The sponge armrest (11) is provided with a slide groove (12) for sliding cooperation between the first slide block (42) and the second slide block (43); The protective plate (41) is rotatably connected to the first slider (42); two plug-in rods (44) are provided at the bottom of the protective plate (41); and the second slider (43) is provided with a plug-in hole for the plug-in rods (44) to be plugged in and matched with. The protective plate (41) is provided with an airbag cushion plate (45) arranged vertically.

9. A safety wheelchair according to claim 8, characterized in that: An extended airbag plate (46) is provided on the airbag cushion plate (45), and the extended airbag plate (46) is rotatably connected to the airbag cushion plate (45); Two triangular stoppers (47) are provided at both ends of the top of the protective plate (41). The triangular stoppers (47) are slidably connected to the top of the protective plate (41). The triangular stoppers (47) are located beside the airbag cushion plate (45).

10. A safety wheelchair according to claim 9, characterized in that: A through groove (13) is provided on the side wall of the sponge handrail (11), and a sliding block (48) is provided in the through groove (13) for sliding fit; The first sliding block (42) and the second sliding block (43) are respectively provided with a threaded locking screw (49), and the locking screw (49) is threadedly connected to the sliding block (48).

Images