An electric wheelchair that can automatically alternate leg lifting and lowering for rehabilitation training to assist standing and walking.

Abstract

This utility model relates to the field of electric wheelchair technology, specifically an electric wheelchair for assistive standing and walking rehabilitation training with automatic alternating leg lifting and lowering. It includes: a wheelchair frame, with a front telescopic rod and a rear telescopic rod on the surface of the frame; a drive wheel assembly connected to the front telescopic rod; and a guide wheel assembly connected to the rear telescopic rod; and a seat assembly for alternating left and right hip movements. This utility model allows for adjustment of the amplitude and frequency of movement according to the patient's tolerance. Through rehabilitation training at an acceptable intensity, the patient's muscle strength can gradually increase, achieving a progressive rehabilitation effect. It eliminates the need for specialized nursing staff for assisted training, and the rehabilitation training space is no longer limited to indoor locations. Furthermore, this electric wheelchair has multiple configuration options, improving its usability and application range.

Description

Technical Field

[0001] This utility model relates to the field of electric wheelchair technology, specifically to an electric wheelchair that can automatically alternately lift and lower the legs for rehabilitation training, assisting in standing and walking. Background Technology

[0002] Some elderly people experience weakness in their lower limbs and difficulty walking, while others suffer from leg weakness due to external injuries. These individuals need rehabilitation training to gradually restore their walking function.

[0003] Currently, there are some simple tools for artificial assistance training, but these require specialized caregivers. On the one hand, they are too difficult to operate, and on the other hand, the care costs are very expensive, which most families cannot afford. In addition, most of these rehabilitation trainings are conducted indoors, which can become tiresome after a while. Utility Model Content

[0004] The purpose of this invention is to provide an electric wheelchair that can automatically alternately raise and lower the legs for rehabilitation training, in order to solve the problems mentioned in the background art, which require specialized nursing staff for assisted training, making the operation too difficult and the nursing costs very expensive.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electric wheelchair for assisting standing and walking rehabilitation training with automatic alternating leg lifting and lowering, comprising:

[0006] A wheelchair frame, the surface of which is provided with a front telescopic rod and a rear telescopic rod, the wheelchair frame is connected to a drive wheel assembly via the front telescopic rod, and the wheelchair frame is connected to a guide wheel assembly via the rear telescopic rod;

[0007] A left-right hip alternating motion seat assembly includes a right seat cushion and a left seat cushion. A right seat cushion bracket and a left seat cushion bracket are fixedly connected to the surfaces of the right and left seat cushions. A hinge seat is fixedly connected to the surfaces of the left and right seat cushion brackets. Both the left and right seat cushion brackets are movably connected to a wheelchair frame via the hinge seat. A splined hole pin is sleeved on the end of the left seat cushion bracket away from the hinge seat.

[0008] A backrest assembly includes a backrest bracket, a backrest attached to the surface of the backrest bracket, a right armrest and a left armrest fixedly attached to both sides of the backrest, a button panel and a hand crank box provided on the surface of the right armrest, a connecting pin hole provided on the surface of the backrest bracket, a manual adjustment positioning pin fixedly attached to one end of the backrest bracket near the connecting pin hole, and the backrest bracket connected to the wheelchair bracket via the manual adjustment positioning pin.

[0009] A headrest assembly, the headrest assembly including a left support and a right support, both of which are connected to a back support;

[0010] A left-right hip alternating motion control component includes a housing and a sensor switch. Fixed hinge seats are movably connected to both sides of the housing. A housing fixing bracket is sleeved on the surface of each fixed hinge seat. The housing is connected to a backrest bracket via the fixed hinge seats. A connecting hinge seat is fixedly connected to the surface of the housing fixing bracket. The housing fixing bracket is connected to a wheelchair bracket via the connecting hinge seat. A connecting pin hole is provided at the end of the housing fixing bracket away from the fixed hinge seats. The connecting pin hole and a splined pin are inserted into each other. A drive motor is installed inside the housing. A splined rotating shaft fixing rod is fixedly connected inside the housing. Bearings are connected to both sides of the splined rotating shaft fixing rod. A splined rotating shaft is sleeved on the surface of each bearing and rotatably connected to the drive motor. A sensor switch fixing plate is fixedly connected inside the housing and is fixedly connected to the sensor switch.

[0011] The left and right lower leg traction assembly includes a traction bracket with a circular hole on its surface. An elastic rope is attached to the traction bracket through the circular hole. A rehabilitation training shoe is connected to the end of the elastic rope away from the traction bracket. Fixed feet are movably connected to both sides of the traction bracket. A locking nut is connected through the surface of the fixed feet. An angle adjustment handle is provided on the surface of the fixed feet.

[0012] Preferably, the surfaces of the right and left seat cushions are fixedly connected to slide rails, and a commode is slidably connected to the inner side of the slide rails, with the commode acting below the right and left seat cushions via the slide rails.

[0013] Preferably, the left seat cushion bracket and the right seat cushion bracket are both movably connected to the backrest bracket and the wheelchair bracket via splined pins.

[0014] Preferably, the surfaces of the left and right supports are provided with through holes, and the left and right supports are connected to a neck pillow support through the through holes and bolts, and a neck pillow is fixedly connected to the surface of the neck pillow support.

[0015] Preferably, the guide wheel assembly has a right leg support assembly and a left leg support assembly movably connected to its surface, and the right leg support assembly and the left leg support assembly are distributed symmetrically.

[0016] Preferably, the backrest support is distributed in two groups on both sides of the backrest, and the neck pillow support is fixedly connected in two groups on both sides of the neck pillow.

[0017] Preferably, the fixed support foot is inserted into the guide wheel assembly, and the locking nut passes through the guide wheel assembly and the fixed support foot in a threaded connection.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] For people with limited mobility, especially the elderly or patients with weak lower limbs, after sitting in the electric wheelchair and putting on training shoes, and once the wheelchair is in a standing position, the operation button is pressed, and the electric wheelchair begins to work, driving the patient's left and right thighs and calves to perform alternating leg lifting and lowering movements. At the same time, the range and frequency of the movements can be adjusted according to the patient's tolerance. Through rehabilitation training of an intensity that the patient can tolerate, the patient's muscle strength can be gradually increased, achieving a gradual recovery effect. There is no need for specialized nursing staff to assist with the training, and the rehabilitation training space is no longer limited to indoors. In addition, the electric wheelchair has multiple configurations, improving its usability and application range. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the sitting posture of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the first standing posture of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the second standing posture of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the present invention in a lying position;

[0024] Figure 5 This is a three-dimensional schematic diagram of the composition structure of the alternating left and right hip movement seat assembly of this utility model;

[0025] Figure 6 This is a three-dimensional schematic diagram of the composition structure of the back-mounted component of this utility model;

[0026] Figure 7 This is a three-dimensional schematic diagram of the composition structure of the headrest assembly of this utility model;

[0027] Figure 8 This is a three-dimensional schematic diagram of the composition structure of the alternating left and right hip movement control component of this utility model;

[0028] Figure 9 This is a three-dimensional schematic diagram of the composition structure of the left and right lower leg traction components of this utility model.

[0029] In the diagram: 1. Wheelchair frame; 11. Front telescopic bar; 12. Rear telescopic bar; 2. Alternating hip movement seat assembly; 21. Left seat cushion support; 211. Hinge seat; 212. Splined pin; 22. Right seat cushion; 23. Bedpan; 24. Right seat cushion support; 25. Left seat cushion; 3. Backrest assembly; 31. Backrest support; 311. Connecting pin hole; 32. Backrest; 33. Right armrest; 34. Left armrest; 35. Button panel; 36. Hand crank; 37. Manual adjustment positioning pin; 4. Headrest assembly; 41. Left support; 42. Neck pillow; 43. Right support; 4 4. Neck pillow support; 5. Alternating hip movement control assembly; 51. Housing; 52. Housing fixing bracket; 521. Connecting hinge seat; 522. Connecting pin hole; 523. Fixing hinge seat; 53. Drive motor; 54. Spline shaft; 55. Induction switch fixing plate; 56. Induction switch; 57. Bearing; 58. Spline shaft fixing rod; 6. Right leg support assembly; 7. Left leg support assembly; 8. Left and right lower leg traction assembly; 81. Traction bracket; 82. Elastic rope; 83. Rehabilitation training shoe; 84. Locking nut; 85. Fixing foot; 86. Angle adjustment handle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-9 One embodiment provided by this utility model:

[0032] An electric wheelchair for assisting standing and walking with automatic alternating leg lifting and lowering rehabilitation training includes:

[0033] The wheelchair frame 1 has a front telescopic rod 11 and a rear telescopic rod 12 on its surface. The wheelchair frame 1 is connected to a drive wheel assembly via the front telescopic rod 11 and a guide wheel assembly via the rear telescopic rod 12. The guide wheel assembly is movably connected to a right leg support assembly 6 and a left leg support assembly 7, which are symmetrically distributed. The wheelchair can be reshaped by the action of the front telescopic rod 11 and the rear telescopic rod 12. Specifically, the wheelchair is adjusted by controlling the length of the front telescopic rod 11 and the rear telescopic rod 12 to change the connection angle between each component and the wheelchair frame 1. The right leg support assembly 6 and the left leg support assembly 7 facilitate the placement and support of the feet.

[0034] The left and right hip alternating motion seat assembly 2 includes a right seat cushion 22 and a left seat cushion 25. A right seat cushion bracket 24 and a left seat cushion bracket 21 are fixedly connected to the surfaces of the right seat cushion 22 and the left seat cushion 25. A hinge seat 211 is fixedly connected to the surfaces of the left seat cushion bracket 21 and the right seat cushion bracket 24. Both the left seat cushion bracket 21 and the right seat cushion bracket 24 are movably connected to the wheelchair frame 1 through the hinge seat 211. A splined hole pin 212 is sleeved on the end of the left seat cushion bracket 21 away from the hinge seat 211. A slide rail is fixedly connected to the surfaces of the right seat cushion 22 and the left seat cushion 25, and a bedpan 23 is slidably connected to the inner side of the slide rail. The bedpan 23 acts under the right seat cushion 22 and the left seat cushion 25 through the slide rail. Through the action of the left seat cushion bracket 21, the angle of the left seat cushion 25 and the bedpan 23 can be adjusted and supported. Under the action of the bedpan 23, urine and feces can be collected.

[0035] The backrest assembly 3 includes a backrest bracket 31, a backrest 32 connected to the surface of the backrest bracket 31, a right armrest 33 and a left armrest 34 fixedly connected to both sides of the backrest 32, a button panel 35 and a hand crank box 36 provided on the surface of the right armrest 33, a connecting pin hole 311 opened on the surface of the backrest bracket 31, a manual adjustment positioning pin 37 fixedly connected to one end of the backrest bracket 31 near the connecting pin hole 311, the backrest bracket 31 is connected to the wheelchair bracket 1 through the manual adjustment positioning pin 37, the left seat cushion bracket 21 and the right seat cushion bracket 24 are movably connected to the backrest bracket 31 and the wheelchair bracket 1 through spline hole pins 212, the backrest 32 facilitates the patient's support, and the left armrest 34 and the right armrest 33 facilitate the patient's hand support or rest.

[0036] The headrest assembly 4 includes a left support 41 and a right support 43, both of which are connected to the backrest support 31. Through holes are provided on the surfaces of the left and right supports 41 and 43. A neck pillow support 44 is connected to the left and right supports 41 and 43 via these through holes and bolts. A neck pillow 42 is fixedly connected to the surface of the neck pillow support 44. The backrest support 31 is distributed in two groups on both sides of the backrest 32, and the neck pillow supports 44 are fixedly connected in two groups on both sides of the neck pillow 42. The left and right supports 41 and 43 facilitate the pushing and maneuvering of the wheelchair, while the neck pillow 42 provides support for the patient's head. Through the through holes on the left and right supports 41 and 43, and with the neck pillow support 44 and bolts, the connection position of the neck pillow 42 on the left and right supports 41 and 43 can be changed, improving the usability and performance of the neck pillow 42.

[0037] The left and right hip alternating movement control component 5 includes a housing 51 and a sensor switch 56. Fixed hinge seats 523 are movably connected to both sides of the housing 51. A housing fixing bracket 52 is sleeved on the surface of the fixed hinge seat 523. The housing 51 is connected to the backrest bracket 31 via the fixed hinge seats 523. A connecting hinge seat 521 is fixedly connected to the surface of the housing fixing bracket 52. The housing fixing bracket 52 is connected to the wheelchair bracket 1 via the connecting hinge seat 521. A connecting pin hole 522 is opened at the end of the housing fixing bracket 52 away from the fixed hinge seat 523. The connecting pin hole 522 is inserted into a splined pin 212. The body 51 is equipped with a drive motor 53. A spline shaft fixing rod 58 is fixedly connected inside the housing 51. Bearings 57 are connected to both sides of the spline shaft fixing rod 58. A spline shaft 54 ​​is sleeved on the surface of the bearings 57. The spline shaft 54 ​​is rotatably connected to the drive motor 53. An induction switch fixing piece 55 is fixedly connected inside the housing 51. The induction switch fixing piece 55 is fixedly connected to the induction switch 56. Through the action of the drive motor 53, the drive motor 53 is electrically connected to the hand crank box 36 and the button panel 35. Its specific working principle is used in existing intelligent wheelchairs and is existing technology, so it will not be described in detail here.

[0038] The left and right calf traction assembly 8 includes a traction bracket 81. The surface of the traction bracket 81 has a circular hole through which an elastic rope 82 is secured. The end of the elastic rope 82 furthest from the traction bracket 81 is connected to a rehabilitation training shoe 83. Fixed support legs 85 are movably connected to both sides of the traction bracket 81. A locking nut 84 is threaded through the surface of each fixed support leg 85. An angle adjustment handle 86 is provided on the surface of each fixed support leg 85. The fixed support legs 85 are inserted into a guide wheel assembly. The locking nut 84 is threaded through the guide wheel assembly and the fixed support legs 85. Through the connection of the traction bracket 81 and the elastic rope 82, the rehabilitation training shoe 83 can be elastically supported by the elastic rope 82. The angle adjustment handle 86 and locking nut 84 can be used to adjust the angle between the traction bracket 81 and the fixed support leg 85, thereby changing the angle at which the traction bracket 81 is used. The angle adjustment handle 86 is rotated to create a gap between the traction bracket 81 and the fixed support leg 85, allowing for rotation. The angle adjustment handle 86 and locking nut 84 are threaded together, and the angle adjustment handle 86 passes through the surface of the traction bracket 81. Rotating the angle adjustment handle 86 in the opposite direction causes the fixed support leg 85 to press against the traction bracket 81. Under the action of this contact, the connection angle between the traction bracket 81 and the fixed support leg 85 is fixed and supported.

[0039] Working principle: The system helps the rehabilitation trainee sit comfortably on the alternating hip movement seat assembly 2 of the electric wheelchair, puts on rehabilitation training shoes 83, adjusts the length of the elastic rope 82 according to the trainee's tolerance for external force, and positions the trainee's back and head against the backrest assembly 3 and headrest assembly 4. After adjusting the sitting posture, the control panel 35 activates the front telescopic rod 11 and rear telescopic rod 12, gradually raising the alternating hip movement seat assembly 2 to an upright position. The backrest assembly 3 and headrest assembly 4 then rise, allowing the trainee to change from a sitting to a standing position. If the trainee is unable to stand, a rehabilitation tension sling can be suspended from the upper part of the left support 41 and right support 43. The system provides auxiliary support to the rehabilitation trainee via a tension strap, eliminating the need for assistance. After the trainee stands upright, the control panel 35 activates the drive motor 53, which rotates the spline shaft 54. This, in turn, causes the right seat cushion 22 to rotate and rise via the spline pin 212 on the alternating hip movement seat assembly 2, thus lifting the trainee's thigh forward. As the thigh rises, the lower leg naturally moves forward under the tension of the elastic ropes 82 on the left and right lower leg traction assemblies 8, achieving the left leg lifting exercise. When the spline shaft 54 ​​reaches its limit position and touches the right sensor switch 56, the right seat drive motor 53 rotates in the opposite direction, causing the spline shaft 54 ​​to rotate in the opposite direction. The left seat rotates in the opposite direction, causing the right seat cushion 22 to rotate and descend via the splined pin 212 on the alternating hip movement seat assembly 2. This causes the thigh of the rehabilitation trainee to descend. As the thigh descends, the lower leg, under its own weight, overcomes the tension of the elastic ropes 82 of the left and right lower leg traction assemblies 8 and descends, realizing the left leg lowering training for the rehabilitation trainee. When the splined shaft 54 ​​rotates to its extreme position in the opposite direction and touches the rightward induction switch 56, the left seat drive motor 53 rotates in the forward direction, causing the splined shaft 54 ​​to rotate in the forward direction. This, through the splined pin 212 on the alternating hip movement seat assembly 2, causes the left seat cushion 25 to rotate in the forward direction and rise, thus driving the rehabilitation trainee to descend. The trainee raises and lowers their leg repeatedly, alternating between the left and right sides. This automatic leg-raising and lowering exercise can achieve the rehabilitation training effect. The trainee can fine-tune the training amplitude and speed by controlling the "+" and "-" buttons on the hand crank 36 according to their own feelings. The trainee can stop the training at any time by controlling the control panel 35. After stopping the training, pressing the control panel 35 will activate the front telescopic rod 11 and the rear telescopic rod 12, which will drive the alternating left and right hip movement seat component 2 from the upright position to the horizontal position. At the same time, the backrest component 3 and the headrest component 4 will lower, allowing the trainee to sit down and rest.

[0040] At this time, the rehabilitation trainee can also start the seat drive motors 53 symmetrically arranged on the left and right sides by operating the button panel 35. This will drive the spline shaft 54 ​​to rotate, and drive the housing fixing bracket 52 to rotate through the left and right spline hole pins 212 on the left and right hip alternating movement seat assembly 2. At the same time, it will drive the backrest assembly 3 and the headrest assembly 4 to rotate, so that the trainee can lie flat at any angle from 90 to 180 degrees.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An assisted standing and walking electric wheelchair with automatic alternately lifting and lowering legs for rehabilitation training, characterized in that, include: A wheelchair support (1) is provided with a front telescopic rod (11) and a rear telescopic rod (12) on its surface. The wheelchair support (1) is connected to a drive wheel assembly via the front telescopic rod (11) and to a guide wheel assembly via the rear telescopic rod (12). A left and right hip alternating motion seat assembly (2) includes a right seat cushion (22) and a left seat cushion (25). The right seat cushion (22) and the left seat cushion (25) are fixedly connected to a right seat cushion bracket (24) and a left seat cushion bracket (21). The left seat cushion bracket (21) and the right seat cushion bracket (24) are fixedly connected to a hinge seat (211). The left seat cushion bracket (21) and the right seat cushion bracket (24) are movably connected to a wheelchair frame (1) through the hinge seat (211). A splined hole pin (212) is sleeved on the end of the left seat cushion bracket (211) away from the hinge seat (211). Backrest assembly (3), the backrest assembly (3) includes a backrest bracket (31), the backrest bracket (31) is connected to a backrest (32), the backrest (32) is fixedly connected to a right armrest (33) and a left armrest (34) on both sides, the right armrest (33) is provided with a button panel (35) and a hand crank box (36) on its surface, the backrest bracket (31) is provided with a connecting pin hole (311), the backrest bracket (31) is fixedly connected to a manual adjustment positioning pin (37) at one end of the backrest bracket (31) near the connecting pin hole (311), and the backrest bracket (31) is connected to the wheelchair bracket (1) through the manual adjustment positioning pin (37); The headrest assembly (4) includes a left support (41) and a right support (43), both of which are connected to the back support (31). A left-right hip alternating motion control component (5) includes a housing (51) and a sensor switch (56). Fixed hinge seats (523) are movably connected to both sides of the housing (51). A housing fixing bracket (52) is sleeved on the surface of the fixed hinge seat (523). The housing (51) is connected to a backrest bracket (31) via the fixed hinge seat (523). A connecting hinge seat (521) is fixedly connected to the surface of the housing fixing bracket (52). The housing fixing bracket (52) is connected to a wheelchair bracket (1) via the connecting hinge seat (521). The housing fixing bracket (52) is located away from the fixed hinge seat. One end of the housing (523) is provided with a connecting pin hole (522), the connecting pin hole (522) and the spline hole pin (212) are inserted into each other, the housing (51) is provided with a drive motor (53), the housing (51) is fixedly connected with a spline shaft fixing rod (58), the two sides of the spline shaft fixing rod (58) are connected with bearings (57), the surface of the bearings (57) is sleeved with a spline shaft (54), the spline shaft (54) and the drive motor (53) are rotatably connected, the housing (51) is fixedly connected with a sensor switch fixing piece (55), the sensor switch fixing piece (55) and the sensor switch (56) are fixedly connected; The left and right lower leg traction assembly (8) includes a traction bracket (81). The surface of the traction bracket (81) is provided with a round hole. An elastic rope (82) is tied to the traction bracket (81) through the round hole. A rehabilitation training shoe (83) is connected to one end of the elastic rope (82) away from the traction bracket (81). Fixed support legs (85) are movably connected to both sides of the traction bracket (81). A locking nut (84) is connected through the surface of the fixed support leg (85). An angle adjustment handle (86) is provided on the surface of the fixed support leg (85).

2. The electric wheelchair according to claim 1, wherein: The surfaces of the right seat cushion (22) and the left seat cushion (25) are fixedly connected to slide rails, and the inner side of the slide rails is slidably connected to a bedpan (23). The bedpan (23) is located below the right seat cushion (22) and the left seat cushion (25) via the slide rails.

3. The automatic alternating leg lifting and lowering rehabilitation training assisted standing and walking electric wheelchair according to claim 1, characterized in that: The left seat cushion bracket (21) and the right seat cushion bracket (24) are movably connected to the backrest bracket (31) and the wheelchair bracket (1) via spline hole pins (212).

4. The automatic alternating leg lifting and lowering rehabilitation training assisted standing and walking electric wheelchair according to claim 1, characterized in that: The left support (41) and the right support (43) have through holes on their surfaces. The left support (41) and the right support (43) are connected to a neck pillow support (44) through the through holes and bolts. A neck pillow (42) is fixedly connected to the surface of the neck pillow support (44).

5. The automatic alternating leg lifting and lowering rehabilitation training assisted standing and walking electric wheelchair according to claim 1, characterized in that: The guide wheel assembly is movably connected to the right leg support assembly (6) and the left leg support assembly (7), which are symmetrically distributed.

6. The automatic alternating leg lifting and lowering rehabilitation training assisted standing and walking electric wheelchair according to claim 4, characterized in that: The backrest support (31) is distributed in two groups on both sides of the backrest (32), and the neck pillow support (44) is fixedly connected in two groups on both sides of the neck pillow (42).

7. The electric wheelchair for assisting standing and walking rehabilitation training with automatic alternating leg lifting and lowering as described in claim 1, characterized in that: The fixed support (85) is inserted into the guide wheel assembly, and the locking nut (84) is threaded through the guide wheel assembly and the fixed support (85).

Images