Multifunctional leg rehabilitation wheelchair

Abstract

The invention discloses a multifunctional leg rehabilitation wheelchair and belongs to the field of rehabilitation equipment. A first connecting rod is fixed to a pedal body and rotationally connected with a second connecting rod, the second connecting rod is rotationally connected with a rehabilitation driving piece, the rehabilitation driving piece is rotationally installed on a frame, a sliding block is slidably installed on the frame, and an elastic piece abuts against the sliding block; when the other end of the third connecting rod is rotationally installed on the sliding block, the wheelchair is in an active exercise mode, the pedal body is pedaled by the foot, the pedal body drives the sliding block to slide through the first connecting rod and the third connecting rod, and the elastic piece exerts elastic force on the sliding block so that the pedal body can generate resistance acting on the foot. When the other end of the third connecting rod is rotationally installed on the second connecting rod, the wheelchair is in a passive exercise mode, the rehabilitation driving piece drives the pedal body to move through the second connecting rod, the third connecting rod and the first connecting rod, the feet move to drive the legs to do passive exercise, and the wheelchair has the functions of passive rehabilitation training and active rehabilitation training of the legs.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rehabilitation equipment, in particular to a multifunctional leg rehabilitation wheelchair. BACKGROUND

[0002] The lower limb disabled or semi-disabled person can only maintain the activity ability of the upper body in a sitting position, and usually needs to sit on a wheelchair to go to the desired place when moving the body. Long-term sitting position can cause poor blood flow, edema and muscle atrophy of the lower limbs, thereby further causing the loss of lower limb function. Therefore, the lower limb disabled or semi-disabled person needs to frequently and timely perform passive movement of each part of the body, especially the lower limbs, to lift the lower limbs frequently so as to accelerate the blood flow of the lower limbs, eliminate edema and restore the lower limb function as much as possible.

[0003] In the prior art, a rehabilitation equipment capable of enabling a patient to sit on a wheelchair and place feet on foot pedals, driving the foot pedals by a driving member to drive the legs to move has appeared. However, this rehabilitation equipment can only realize passive rehabilitation and cannot realize active rehabilitation training of the legs of the patient. SUMMARY

[0004] In order to overcome the deficiencies of the prior art, one of the purposes of the present application is to provide a multifunctional leg rehabilitation wheelchair capable of realizing both passive rehabilitation training and active rehabilitation training of the legs.

[0005] One of the purposes of the present application is achieved by adopting the following technical scheme:

[0006] The multifunctional leg rehabilitation wheelchair comprises a frame, a hip structure and a footrest assembly, the hip structure is installed on the frame, the multifunctional leg rehabilitation wheelchair further comprises a rehabilitation driving element and a main rehabilitation structure, the footrest assembly comprises a footrest body, a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is fixed with the footrest body, the other end of the first connecting rod is rotatably connected with the second connecting rod and the frame, one end of the second connecting rod away from the first connecting rod is rotatably connected with the rehabilitation driving element, the rehabilitation driving element is rotatably installed on the frame, the main rehabilitation structure comprises a sliding block and an elastic element, the sliding block is slidably installed on the frame, the elastic element is in contact with the sliding block, one end of the third connecting rod is rotatably installed on the first connecting rod, when the other end of the third connecting rod is rotatably installed on the sliding block, the multifunctional leg rehabilitation wheelchair is in an active exercise mode, at this time, the footrest body is stepped by feet, the footrest body drives the sliding block to slide through the first connecting rod and the third connecting rod, the elastic element exerts an elastic force on the sliding block to generate a resistance on the footrest body; when the other end of the third connecting rod is rotatably installed on the second connecting rod, the multifunctional leg rehabilitation wheelchair is in a passive exercise mode, at this time, the rehabilitation driving element drives the footrest body to move through the second connecting rod, the third connecting rod and the first connecting rod, so that the feet on the footrest body move to drive the passive exercise of the legs.

[0007] Further, the multifunctional leg rehabilitation wheelchair further comprises a connecting rod assembly, a base and a lifting driving element, one end of the connecting rod assembly is slidably connected with the base, the other end of the connecting rod assembly is rotatably connected with the frame, the lifting driving element is fixed on the base, and an output end of the lifting driving element is connected with the frame to drive the frame to lift and adjust the height of the hip structure.

[0008] Further, the multifunctional leg rehabilitation wheelchair further comprises an inclination driving element, one end of the inclination driving element is rotatably installed on the connecting rod assembly, and the other end of the inclination driving element is rotatably installed on the hip structure, the hip structure is rotatably connected with the frame, and the inclination driving element drives the hip structure to rotate relative to the frame to adjust the inclination angle of the hip structure.

[0009] Further, the base is provided with a fixed footrest, and the fixed footrest is located at the front end of the base, when the inclination driving element drives the hip structure to rotate to a standing state, the fixed footrest is used for the user to stand.

[0010] Further, when the multifunctional leg rehabilitation wheelchair is in a standing state, the other end of the third connecting rod is rotatably installed on the second connecting rod, and the rehabilitation driving element drives the footrest body to be lifted so that the footrest body is used as a knee pad.

[0011] Further, the active rehabilitation structure further comprises a mounting base fixed to the frame and a mounting rod fixed to the mounting base, the sliding block is slidingly installed on the mounting rod, and the elastic member is sleeved on the mounting rod and abuts against both the sliding block and the mounting base.

[0012] Further, the mounting base is provided with a limiting groove parallel to the mounting rod, and the sliding block comprises a limiting portion located in the limiting groove and capable of sliding along the limiting groove, so that the limiting groove prevents the sliding block from rotating relative to the mounting rod.

[0013] Further, the multifunctional leg rehabilitation wheelchair further comprises a back structure rotationally connected to the hip structure and a back lifting driving member rotationally connected at one end to the back structure and at the other end to the hip structure, the back lifting driving member driving the back structure to rotate relative to the hip structure to switch the multifunctional leg rehabilitation wheelchair between the seat state and the bed state.

[0014] Further, the back structure comprises a second frame and an armrest rotationally installed on the second frame.

[0015] Further, the number of the footrest assemblies is two, and the two footrest assemblies are symmetrically arranged about the frame.

[0016] Compared with the prior art, the multifunctional leg rehabilitation wheelchair comprises a rehabilitation driving member and an active rehabilitation structure, the footrest assembly comprises a footrest body, a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is fixed to the footrest body, the other end of the first connecting rod is rotationally connected to the second connecting rod and the frame, one end of the second connecting rod away from the first connecting rod is rotationally connected to the rehabilitation driving member, the rehabilitation driving member is rotationally installed on the frame, the active rehabilitation structure comprises a sliding block and an elastic member, the sliding block is slidingly installed on the frame, the elastic member abuts against the sliding block, one end of the third connecting rod is rotationally installed on the first connecting rod, and when the other end of the third connecting rod is rotationally installed on the sliding block, the multifunctional leg rehabilitation wheelchair is in an active exercise mode, at this time, the footrest body is stepped by the foot, the footrest body drives the sliding block to slide through the first connecting rod and the third connecting rod, and the elastic member exerts an elastic force on the sliding block to generate a resistance force on the footrest body acting on the foot; when the other end of the third connecting rod is rotationally installed on the second connecting rod, the multifunctional leg rehabilitation wheelchair is in a passive exercise mode, at this time, the rehabilitation driving member drives the footrest body to move through the second connecting rod, the third connecting rod and the first connecting rod, so as to drive the leg to be passively exercised, through the above design, the multifunctional leg rehabilitation wheelchair can realize both passive rehabilitation training and active rehabilitation training of the leg. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 This is a perspective view of the bed frame of the multifunctional leg rehabilitation wheelchair of the present invention;

[0018] Figure 2 for Figure 1 3D exploded view of a multifunctional leg rehabilitation wheelchair;

[0019] Figure 3 for Figure 2 A three-dimensional diagram of the back structure of a multifunctional leg rehabilitation wheelchair;

[0020] Figure 4 for Figure 2 A three-dimensional diagram of the active rehabilitation structure of a multifunctional leg rehabilitation wheelchair;

[0021] Figure 5 for Figure 4 Another three-dimensional view of the active rehabilitation structure;

[0022] Figure 6 for Figure 1 A three-dimensional diagram of the passive exercise mode of the seat position of the multifunctional leg rehabilitation wheelchair;

[0023] Figure 7 for Figure 6 A magnified view of point A showing the seat position of the multifunctional leg rehabilitation wheelchair;

[0024] Figure 8 for Figure 1 A 3D diagram of the active exercise mode of the seat position of the multifunctional leg rehabilitation wheelchair;

[0025] Figure 9 for Figure 8 A magnified view of point B showing the seat position of the multifunctional leg rehabilitation wheelchair;

[0026] Figure 10 for Figure 1 A 3D diagram showing the tilting modes of the seat in a multifunctional leg rehabilitation wheelchair;

[0027] Figure 11 for Figure 1 A 3D view of the multifunctional leg rehabilitation wheelchair in a standing position.

[0028] In the figure: 10, base; 11, main body; 110, fixed rod; 1101, mounting piece; 1102, sliding groove; 111, bottom plate; 1110, fixed footrest; 12, roller; 20, link assembly; 21, lifting link; 22, connecting rod; 30, hip structure; 31, first skeleton; 32, hip pad; 40, back structure; 41, second skeleton; 410, mounting piece; 411, pivoting portion; 42, armrest; 43, back pad; 50, lifting drive; 60, frame; 70, back lifting drive; 80, tilting drive; 90, rehabilitation drive; 100, footrest assembly; 101, footrest main body; 102, first link; 103, second link; 104, third link; 200, active rehabilitation structure; 201, mounting seat; 2010, limiting groove; 202, mounting rod; 203, elastic member; 204, sliding block; 2040, limiting portion. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0030] It should be noted that when an assembly is referred to as being "fixed" to another assembly, it can be directly on the other assembly or can be fixed thereto by an intermediate assembly. When an assembly is referred to as being "connected" to another assembly, it can be directly connected to the other assembly or can be connected thereto by an intermediate assembly. When an assembly is referred to as being "disposed" on another assembly, it can be directly disposed on the other assembly or can be disposed thereon by an intermediate assembly. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] Please refer to Figure 1 and Figure 2The multifunctional leg rehabilitation wheelchair can switch between a bed body state and a wheelchair state, can realize lying and standing functions in the bed body state, has active exercise mode and passive exercise mode in the wheelchair state, and the inclination angle of the hip structure 30 of the seat can be adjusted.

[0033] The multifunctional leg rehabilitation wheelchair comprises a base 10, a connecting rod assembly 20, a hip structure 30, a back structure 40, a lifting drive 50, a frame 60, a back lifting drive 70, an inclination drive 80, a rehabilitation drive 90, a footrest assembly 100, and an active rehabilitation structure 200.

[0034] The base 10 comprises a main body 11 and a roller 12 rotatably installed at the bottom of the main body 11. The roller 12 is an electric wheel or a common roller. When the roller 12 is an electric wheel, the user controls the wheelchair movement through a button or a controller. When the roller 12 is a common roller, the wheelchair needs to be pushed to move.

[0035] The main body 11 comprises a fixed rod 110 and a bottom plate 111 fixedly connected with the fixed rod 110. The fixed rod 110 is provided with mounting pieces 1101, and the mounting pieces 1101 are provided with sliding grooves 1102 in a straight line. The number of the mounting pieces 1101 is two, and the two mounting pieces 1101 are respectively located on the two sides of the rear end of the base 10. The sliding grooves 1102 are used for installing the connecting rod assembly 20, and the end of the connecting rod assembly 20 slides in the sliding grooves 1102. The front end of the bottom plate 111 is provided with a fixed footrest 1110, which is used for the user to stand when the wheelchair is in a standing state.

[0036] The connecting rod assembly 20 comprises two lifting connecting rods 21 and a connecting rod 22. The two ends of the connecting rod 22 are respectively fixed with the two lifting connecting rods 21. The bottom end of the lifting connecting rod 21 is slidingly installed in the sliding groove 1102, and the top end of the lifting connecting rod 21 is rotatably installed at the top of the frame 60. The connecting rod 22 is used for installing the inclination drive 80.

[0037] The hip structure 30 comprises a first skeleton 31 and a hip pad 32 installed on the first skeleton 31. The front end of the first skeleton 31 is rotatably connected with the frame 60, and the rear end of the first skeleton 31 is rotatably connected with the back structure 40.

[0038] Please continue to refer to Figure 3The back structure 40 comprises a second skeleton 41, an armrest 42 and a back cushion 43. The second skeleton 41 is provided with a mounting piece 410 at the middle back surface. The mounting piece 410 is used for rotationally connecting with the back lifting driving member 70. The front end of the second skeleton 41 is provided with a pivot part 411, which is rotationally connected with the hip structure 30. The armrest 42 is rotationally installed on the second skeleton 41. When the multifunctional leg rehabilitation wheelchair is used as a wheelchair, the armrest 42 is rotated to open for placing arms. When the multifunctional leg rehabilitation wheelchair is in the standing state, the armrest 42 is rotated to open for protecting the user.

[0039] Please continue to refer to Figure 2 The lifting driving member 50 is used for changing the height of the frame 60. Specifically, the bottom end of the lifting driving member 50 is fixed to the bottom plate 111 of the base 10, and the top of the lifting driving member 50 is connected with the frame 60. In the embodiment, the lifting driving member 50 is an electric cylinder.

[0040] The top of the frame 60 is rotationally connected with the lifting connecting rod 21 and the hip structure 30. The bottom of the frame 60 is rotationally connected with the first connecting rod 102 and the second connecting rod 103, and the side of the frame 60 is fixedly installed with the active rehabilitation structure 200.

[0041] Please continue to refer to Figure 11 One end of the back lifting driving member 70 is rotationally installed on the mounting piece 410 of the back structure 40, and the other end is rotationally installed on the first skeleton 31.

[0042] One end of the tilting driving member 80 is rotationally installed on the connecting rod 22, and the other end is rotationally installed on the first skeleton 31.

[0043] Please continue to refer to Figure 2 The rehabilitation driving member 90 is used for driving the foot pedal body 101 to move, driving the user's feet to move, and thus passively exercising the user's legs. Specifically, the rehabilitation driving member 90 is rotationally installed on the frame 60 and rotationally connected with the second connecting rod 103. The rehabilitation driving member 90 is an electric cylinder.

[0044] The foot pedal assembly 100 comprises a foot pedal body 101, a first connecting rod 102, a second connecting rod 103 and a third connecting rod 104. The foot pedal body 101 is fixedly connected with the first connecting rod 102. The second connecting rod 103 is rotationally connected with the end of the first connecting rod 102. The third connecting rod 104 is rotationally connected with the second connecting rod 103 or the sliding block 204 of the active rehabilitation structure 200. The connection point is between the second connecting rod 103 and the foot pedal body 101. The end of the second connecting rod 103 is rotationally connected with the rehabilitation driving member 90. When the third connecting rod 104 is rotationally connected with the second connecting rod 103, the multifunctional leg rehabilitation wheelchair is in the passive exercise mode. When the third connecting rod 104 is rotationally connected with the sliding block 204, the multifunctional leg rehabilitation wheelchair is in the active exercise mode.

[0045] Please continue to refer to Figure 4 and Figure 5 , the active rehabilitation structure 200 includes a mounting seat 201, a mounting rod 202, an elastic member 203, and a sliding block 204. The mounting seat 201 is fixed to the side wall of the frame 60. The mounting seat 201 is provided with a limiting groove 2010 extending in the vertical direction. The mounting rod 202 is fixed to the mounting seat 201 and parallel to the limiting groove 2010. The sliding block 204 is slidingly installed on the mounting rod 202, and the sliding block 204 is provided with a limiting portion 2040 in the form of a protrusion. The limiting portion 2040 is located in the limiting groove 2010 and can slide along the limiting groove 2010 to prevent the sliding block 204 from rotating relative to the mounting rod 202. The elastic member 203 is sleeved on the mounting rod 202, and the two ends of the elastic member 203 abut against the mounting seat 201 and the sliding block 204, respectively.

[0046] Please continue to refer to Figure 1 , the multifunctional leg rehabilitation wheelchair is in a bed state, at this time, the back structure 40 and the hip structure 30 are located on the same plane, and the user's body lies on the back structure 40 and the hip structure 30. The back structure 40 is driven to rotate relative to the hip structure 30 by the back lifting driving member 70, so as to convert from the bed state to the wheelchair state, as shown in Figure 10 . By means of the inclination driving member 80, the angle of the hip structure 30 relative to the frame 60 can be adjusted, and the seat inclination function effectively relieves the fatigue and discomfort of the user caused by long-term sitting, and enhances the comfort.

[0047] Please continue to refer to Figure 6 and Figure 7 , the third connecting rod 104 is rotationally connected with the second connecting rod 103, and the multifunctional leg rehabilitation wheelchair is in a passive exercise mode. At this time, the rehabilitation driving member 90 drives the foot pedal body 101 to move through the second connecting rod 103, the third connecting rod 104, and the first connecting rod 102, so as to drive the leg to be passively exercised.

[0048] Please continue to refer to Figure 8 and Figure 9 , the third connecting rod 104 is rotationally connected with the sliding block 204, and the multifunctional leg rehabilitation wheelchair is in an active exercise mode. At this time, the foot pedal body 101 is stepped by the foot, and the foot pedal body 101 drives the sliding block 204 to slide through the first connecting rod 102 and the third connecting rod 104. The elastic member 203 exerts an elastic force on the sliding block 204 to make the foot pedal body 101 generate a resistance force acting on the foot, so as to perform resistance training, effectively stimulate the muscle nerves, delay muscle atrophy, improve joint mobility and blood circulation, and thus actively promote the reconstruction and recovery of motor function.

[0049] Please continue to refer to Figure 11For the standing mode, when the tilt driving member 80 is extended to the limit position, the user stands on the fixed foot pedal 1110, leans the body against the hip structure 30 and the back structure 40, and the rehabilitation driving member 90 drives the foot pedal body 101 to move through the second connecting rod 103, the third connecting rod 104 and the first connecting rod 102, uses the foot pedal body 101 as a knee pad, and the standing assisting function can not only assist the user to realize a stable standing posture and expand the activity range, but also can cooperate with the walking assisting mode to encourage and support the user to conduct gait training, which is very important for maintaining muscle strength and bone health.

[0050] The multifunctional leg rehabilitation wheelchair can be used as a bed body and a wheelchair, can assist standing when used as a bed body, can adjust the seat inclination angle when used as a wheelchair, and has the functions of passive leg rehabilitation training and active leg rehabilitation training.

[0051] The above embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are equivalent modifications and evolutions of the above embodiments according to the essential technology of the present application, and these all belong to the protection scope of the present application.

Claims

1. A multi-functional leg rehabilitation wheelchair comprising a frame, a hip structure and a footrest assembly, the hip structure being mounted to the frame, characterized in that: The multifunctional leg rehabilitation wheelchair further comprises a rehabilitation driving member and an active rehabilitation structure, the footrest assembly comprises a footrest body, a first connecting rod, a second connecting rod and a third connecting rod, one end of the first connecting rod is fixed with the footrest body, the other end of the first connecting rod is rotatably connected with the second connecting rod and the frame, one end of the second connecting rod away from the first connecting rod is rotatably connected with the rehabilitation driving member, the rehabilitation driving member is rotatably installed on the frame, the active rehabilitation structure comprises a sliding block and an elastic member, the sliding block is slidably installed on the frame, the elastic member is in abutment with the sliding block, one end of the third connecting rod is rotatably installed on the first connecting rod, when the other end of the third connecting rod is rotatably installed on the sliding block, the multifunctional leg rehabilitation wheelchair is in an active exercise mode, at this time, the footrest body is stepped by feet, the footrest body drives the sliding block to slide through the first connecting rod and the third connecting rod, the elastic member exerts elastic force on the sliding block to make the footrest body generate resistance acting on the feet; when the other end of the third connecting rod is rotatably installed on the second connecting rod, the multifunctional leg rehabilitation wheelchair is in a passive exercise mode, at this time, the rehabilitation driving member drives the footrest body to move through the second connecting rod, the third connecting rod and the first connecting rod, so that the feet on the footrest body move to drive the passive exercise of the legs.

2. The multi-functional leg rehabilitation wheelchair according to claim 1, characterized in that: The multifunctional leg rehabilitation wheelchair further comprises a connecting rod assembly, a base and a lifting driving member, one end of the connecting rod assembly is slidably connected with the base, the other end of the connecting rod assembly is rotatably connected with the frame, the lifting driving member is fixed on the base, and an output end of the lifting driving member is connected with the frame to drive the frame to lift and adjust the height of the hip structure.

3. The multi-functional leg rehabilitation wheelchair according to claim 2, characterized in that: The multifunctional leg rehabilitation wheelchair further comprises an inclination driving member, one end of the inclination driving member is rotatably installed on the connecting rod assembly, and the other end of the inclination driving member is rotatably installed on the hip structure, the hip structure is rotatably connected with the frame, and the inclination driving member drives the hip structure to rotate relative to the frame to adjust the inclination angle of the hip structure.

4. The multi-functional leg rehabilitation wheelchair according to claim 3, characterized in that: The base is provided with a fixed footrest, and the fixed footrest is located at the front end of the base, when the inclination driving member drives the hip structure to rotate to a standing state, the fixed footrest is used for the user to stand.

5. The multi-functional leg rehabilitation wheelchair according to claim 4, characterized in that: When the multifunctional leg rehabilitation wheelchair is in the standing state, the other end of the third connecting rod is rotatably installed on the second connecting rod, and the rehabilitation driving member drives the footrest body to be lifted to make the footrest body serve as a knee pad.

6. The multi-functional leg rehabilitation wheelchair according to claim 1, characterized in that: The active rehabilitation structure further comprises a mounting seat and a mounting rod, the mounting seat is fixed on the frame, the mounting rod is fixed on the mounting seat, the sliding block is slidably installed on the mounting rod, and the elastic member is sleeved on the mounting rod and abuts against the sliding block and the mounting seat at two ends.

7. The multi-functional leg rehabilitation wheelchair according to claim 6, characterized in that: The mounting seat is provided with a limiting groove, the limiting groove is parallel to the mounting rod, the sliding block comprises a limiting portion, the limiting portion is located in the limiting groove and can slide along the limiting groove, and the limiting groove prevents the sliding block from rotating relative to the mounting rod.

8. The multi-functional leg rehabilitation wheelchair according to claim 1, characterized in that: The multifunctional leg rehabilitation wheelchair further comprises a back structure and a back lifting driving member, one end of the back lifting driving member is rotatably connected with the back structure, the other end of the back lifting driving member is rotatably connected with the hip structure, and the back lifting driving member drives the back structure to rotate relative to the hip structure so as to switch the multifunctional leg rehabilitation wheelchair between the seat state and the bed state.

9. The multi-functional leg rehabilitation wheelchair according to claim 8, characterized in that: The back structure comprises a second frame and an armrest, and the armrest is rotatably installed on the second frame.

10. The multi-functional leg rehabilitation wheelchair according to claim 1, characterized in that: The number of the footrest assemblies is two, and the two footrest assemblies are symmetrically arranged relative to the frame.

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