CN110859711B

CN110859711B - Elderly Assisted Standing Wheelchair

Info

Publication number: CN110859711B
Application number: CN201911162739.1A
Authority: CN
Inventors: 李安生; 郭志强; 杜文辽; 李彦彦; 费贺勇; 李宏伟; 庞家玲; 汤雅坤; 何昆; 张天胤; 侯绪坤
Original assignee: Zhengzhou University of Light Industry
Current assignee: Zhengzhou University of Light Industry
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2021-06-22
Anticipated expiration: 2039-11-25
Also published as: CN110859711A

Abstract

The invention relates to an auxiliary standing wheelchair for the elderly. The wheelchair includes a seat frame, an auxiliary support mechanism installed on the left and right sides of the seat frame, and a pedal auxiliary mechanism. The auxiliary support mechanism is installed at the position of the armrests on both sides of the seat frame and Located on the inner side of the corresponding guide rail, the mechanism includes a bottom plate, an upper support arm, a lower support arm, a top plate, a driving block and a double-head screw motor. The mechanism includes a swing bar, a foot pedal, a leg guard and an electric push rod. The old man sits on the support seat. When the old man wants to stand up and leave the wheelchair, he will start the motor by holding the top plate. The top plate is raised, and the rear end of the support seat plate is raised upwards through the linkage pull rod while the top plate is raised, so as to assist the elderly to gradually change from a sitting position to a standing position, and then help the elderly to stand up and leave the wheelchair, which is convenient, practical, safe and reliable.

Description

Wheelchair for helping old people to stand

Technical Field

The invention relates to the technical field of wheelchairs, in particular to an auxiliary standing wheelchair for the old.

Background

According to statistics, due to various traffic accidents, natural disasters, accidents and various diseases, thousands of people lose walking ability every year, more than three hundred and ten thousand hemiplegic patients exist in China, the aging degree of the society is continuously improved, and many elderly people who are old need to use wheelchairs, so that the number of the elderly and disabled people who use wheelchairs is very large, and under the normal condition, the elderly and disabled people need to accompany with a family and a caregiver to complete daily living, or people with better conditions need to move by means of the wheelchairs. However, for the elderly who take wheelchairs, the elderly are in a sitting posture for a long time, and the elderly are easy to suffer from leg muscle atrophy due to lack of standing and walking exercises for a long time, and are not good for the health of the elderly, so that the wheelchair is used as a tool for riding instead of walk for the old with inconvenient actions, and the old needs to get up to get rid of the wheelchair to perform proper physical activities in due time, meanwhile, when the old needs to have a rest, go to the toilet and other necessary physiological activities, the old needs to get up and leave the wheelchair, because the old people have inconvenient hands and feet and weak legs, the old people are difficult to get up and leave the wheelchair independently and have certain safety risk, the old people usually need to get up and stand to leave the wheelchair with the assistance of other people, however, the old people cannot always have people at all times, and the old people need to be assisted by others and are inconvenient finally, so that the old people need to start with the wheelchair, and a wheelchair which can assist the old people to get up and stand by the structure of the wheelchair is urgently needed.

Disclosure of Invention

In order to solve the problems, the invention provides an auxiliary standing wheelchair for the old.

The specific contents are as follows: help the supplementary wheelchair of standing of old age, this wheelchair include the chair frame, install supplementary supporting mechanism and pedal complementary unit in the chair frame left and right sides, characterized by:

the chair frame is a frame in the form of a chair formed by connecting a plurality of metal rods end to end, the front end of the bottom of the chair frame is provided with bilateral universal front wheels, the rear end of the bottom of the chair frame is provided with bilateral driving rear wheels, the positions of handrails at two sides of the chair frame are provided with bilateral guide rails, the guide rails are two arc-shaped strips arranged in parallel, the opposite surfaces of the two arc-shaped strips are provided with clamping grooves, and the upper ends of the guide rails are gradually bent downwards from bottom to top after the front ends and the lower ends are arranged;

the auxiliary supporting mechanism is arranged at the positions of armrests at the two sides of the chair frame and is positioned at the inner side of the corresponding guide rail, the mechanism comprises a bottom plate, an upper supporting arm, a lower supporting arm, a top plate, driving blocks and a double-head screw motor, the bottom plate is hinged on a support on the chair frame, symmetrical lower supporting arms are hinged on the bottom plate and positioned at the front side and the rear side of the support, the upper ends of the two lower supporting arms are respectively hinged with the lower ends of the two driving blocks, the upper ends of the two driving blocks are respectively hinged with the upper supporting arm, the upper ends of the two upper supporting arms are respectively hinged on the top plate, wherein the bottom plate, the two lower supporting arms, the driving blocks, the two upper supporting arms and the top plate form an octagon which is symmetrical up and down and front and rear, two screw shafts of the double-head screw motor are respectively connected with the two driving blocks to form screw, a driving roller is fixed on the outer side surface of the double-head screw motor through a revolute pair, the driving roller is clamped in a clamping groove between two arc-shaped strips of the guide rail, a supporting seat plate is further mounted on the chair frame, two sides of the front end of the supporting seat plate are coaxially hinged on the chair frame, linkage pull rods are symmetrically hinged on two sides of the rear end of the supporting seat plate, and the upper end of each linkage pull rod is hinged with a top plate on the corresponding side;

the pedal auxiliary mechanism is arranged at the positions where legs at two sides of the front end of the chair frame are placed and comprises a swinging rod, a pedal plate, a leg guard plate and an electric push rod, the upper end of the swinging rod is hinged on a fixed cantilever horizontally extending out of the front end of the chair frame, the pedal plate extending towards the inner side is fixed at the lowest end of the swinging rod, the cross section of the leg guard plate is L-shaped, one long edge of the leg guard plate is sleeved on the swinging rod through a revolute pair and freely rotates around the swinging rod, a gear sleeved on the swinging rod is fixed at the upper end of the leg guard plate, a rack with teeth on the side surface and correspondingly matched with the gear is fixed on the chair frame, the outer end of the rack is an upward-raised arc shape, the arc shape is consistent with the swinging radian of the gear along with the swinging rod, the rack and the gear are meshed to form gear-rack transmission, one end of the electric push rod is hinged on the chair frame, the swing rod and the electric push rod swing in the same vertical plane.

Preferably, all articulated arm backup pad on the roof of supplementary supporting mechanism, the middle part and the roof of arm backup pad are articulated, the lower surface at arm backup pad both ends all is fixed with balance spring, balance spring's lower extreme all is fixed at the upper surface of roof.

Preferably, the hinge shaft of the arm supporting plate and the top plate and the hinge shaft of the linkage pull rod and the top plate are coaxial.

Preferably, the lowest swinging point of the swinging rod and the lowest point of the rim of the universal wheel are on the same horizontal plane.

Preferably, the two ends of the top plate and the two ends of the bottom plate of the auxiliary supporting mechanism are provided with fixing belt installing ports.

Preferably, a pushing handle extending horizontally backwards is arranged at the upper part of the rear end of the chair frame.

The invention has the beneficial technical effects that: the invention relates to an assistant standing wheelchair for old people, which is characterized in that firstly, an old person sits on a support seat plate, when the old person wants to stand up and leave the wheelchair, a motor is started by a hand-held top plate, the motor rotates to enable two driving blocks to contract towards the middle to enable the top plate to rise, the rear end of the support seat plate is driven to lift upwards through a linkage pull rod while the top plate rises, meanwhile, the whole assistant support mechanism is gradually inclined forwards under the guide of a guide rail, so that the assistant support mechanism is assisted and conforms to the natural change of the old person from a sitting posture to a standing posture, the old person is further helped to stand up and leave the wheelchair easily, the assistant standing wheelchair is convenient, practical, safe and reliable, moreover, an oscillating rod on a pedal assistant mechanism is driven by an electric push rod to adjust the angle to adapt to the placement of the feet of the old person, when the old person needs to stand up and leave the wheelchair, the electric push, the wheelchair can help the old to stand up and stand on the wheelchair in a comfortable and natural auxiliary mode, and is safe and convenient.

Drawings

FIG. 1 is a perspective view of a wheelchair for assisting the aged to stand;

FIG. 2 is a cross-sectional view of an assisted-standing wheelchair for aiding old people;

FIG. 3 is a perspective view of the chair frame;

FIG. 4 is a first perspective view of the auxiliary supporting mechanism;

FIG. 5 is a schematic perspective view of an auxiliary supporting mechanism;

FIG. 6 is a perspective view of the step assist mechanism;

FIG. 7 is a schematic cross-sectional view of the guide rail;

in the figure: 11. the chair comprises a chair frame 12, a driving rear wheel 13, a universal front wheel 14, a guide rail 141, a clamping groove 15, a rack 16, a fixed cantilever 17, a support seat 18, a pushing handle 21, a supporting seat plate 22, a linkage pull rod 31, a bottom plate 31, a lower support arm 32, a driving block 33, a driving block 34, an upper support arm 35, a top plate 36, an arm support plate 37, a balance spring 38, a double-head-out screw motor 39, a driving roller 39, a fixed belt mounting opening 40, a swing rod 41, a pedal 42, a pedal 43, a leg protection plate 44, a gear 45 and an electric push rod.

Detailed Description

In the first embodiment, referring to fig. 1-7, an assistant standing wheelchair for old people comprises a chair frame, assistant supporting mechanisms and pedal assistant mechanisms, wherein the assistant supporting mechanisms and the pedal assistant mechanisms are arranged on the left side and the right side of the chair frame;

the chair frame is a frame in the form of a chair formed by connecting a plurality of metal rods end to end, bilateral universal front wheels are installed at the front end of the bottom of the chair frame, bilateral driving rear wheels are installed at the rear end of the bottom of the chair frame, bilateral guide rails are arranged at the positions of armrests on two sides of the chair frame, the guide rails are two arc-shaped strips arranged in parallel, clamping grooves are formed in the opposite surfaces of the two arc-shaped strips, the upper ends of the guide rails are bent downwards at the front and the lower ends from bottom to top, and the specific profile radian of the arc-shaped strips is set according to actual conditions and requirements;

the auxiliary supporting mechanism is arranged at the positions of armrests at the two sides of the chair frame and is positioned at the inner side of the corresponding guide rail, the mechanism comprises a bottom plate, an upper supporting arm, a lower supporting arm, a top plate, driving blocks and a double-head screw motor, the bottom plate is hinged on a support on the chair frame, symmetrical lower supporting arms are hinged on the bottom plate and positioned at the front side and the rear side of the support, the upper ends of the two lower supporting arms are respectively hinged with the lower ends of the two driving blocks, the upper ends of the two driving blocks are respectively hinged with the upper supporting arm, the upper ends of the two upper supporting arms are respectively hinged on the top plate, wherein the bottom plate, the two lower supporting arms, the driving blocks, the two upper supporting arms and the top plate form an octagon which is symmetrical up and down and front and rear, two screw shafts of the double-head screw motor are respectively connected with the two driving blocks to form screw, a driving roller is fixed on the outer side surface of the double-head screw motor through a revolute pair, the driving roller is clamped in a clamping groove between two arc-shaped strips of the guide rail, a supporting seat plate is further mounted on the chair frame, two sides of the front end of the supporting seat plate are coaxially hinged on the chair frame, linkage pull rods are symmetrically hinged on two sides of the rear end of the supporting seat plate, and the upper end of each linkage pull rod is hinged with a top plate on the corresponding side; the double-head-out screw motor drives the driving block with opposite threads to contract inwards or expand outwards, so that the top plate is lifted through the upper support arm and the lower support arm, meanwhile, the whole auxiliary supporting mechanism is guided by the guide rail through the driving roller, and is lifted while inclining forwards around the support and driving the support base plate to incline forwards, so that the process that a person stands up and naturally inclines forwards is matched.

The roof of auxiliary stay mechanism on all articulated have an arm backup pad, the middle part and the roof of arm backup pad are articulated, the lower surface at arm backup pad both ends all is fixed with balance spring, balance spring's lower extreme all is fixed at the upper surface of roof, the arm backup pad is used for the support of old man's arm to put, increases the comfort level through balance spring.

The articulated shaft of arm backup pad and roof and the articulated shaft coaxial of linkage pull rod and roof.

The lowest swinging point of the swinging rod and the lowest point of the rim of the universal wheel are on the same horizontal plane, the lower end of the swinging rod is just supported on the ground when swinging to the lowest point, and the old can stand up safely and stably.

And fixing belt mounting ports are respectively arranged at the two ends of the top plate and the two ends of the bottom plate of the auxiliary supporting mechanism. The fixing belt is convenient to arrange when necessary. The upper part of the rear end of the chair frame is provided with a pushing handle which extends backwards horizontally and is used for pushing the wheelchair.

The use process and the principle of the invention are as follows:

firstly, the old people sit on the support seat plate, when the old people think to stand up and leave the wheelchair, the old people holds the arm support plate and starts the screw motor, the screw motor rotates to enable the two driving blocks to contract towards the middle to enable the top plate to ascend, the rear end of the support seat plate is driven to ascend through the linkage pull rod while the top plate ascends, meanwhile, the whole auxiliary support mechanism gradually inclines forwards under the guide of the guide rail, so that the natural transition from sitting posture to standing posture of the old people is assisted and complied, the old people are further helped to stand up and leave the wheelchair easily, the wheelchair is convenient, practical, safe and reliable, moreover, the swing rod on the pedal auxiliary mechanism is driven by the electric push rod to adjust the angle to adapt to the placement of the feet of the old people, when the old people need to stand up and leave the wheelchair, the electric push rod drives the swing rod to swing downwards and contact with the ground, in the, the wheelchair can help the old to stand up and stand on the wheelchair in a comfortable and natural auxiliary mode, and is safe and convenient.

Claims

1. An auxiliary standing wheelchair for the elderly, the wheelchair includes a chair frame, an auxiliary support mechanism and a pedal assist mechanism installed on the left and right sides of the chair frame, and is characterized by:

The chair frame is a frame in which a number of metal rods are connected end to end in the form of a seat. The front end of the bottom of the chair frame is installed with a left and right symmetrical universal front wheel, and the rear end of the bottom of the chair frame is installed with a left and right symmetrical drive rear. There are left and right symmetrical guide rails at the positions of the armrests on both sides of the chair frame. The guide rails are two arc-shaped bars arranged in parallel, and the opposite surfaces of the two arc-shaped bars are provided with clamping grooves. The upper end is in the front, the lower end is in the back and gradually bends downward from bottom to top;

The auxiliary support mechanism is installed at the position of the armrests on both sides of the chair frame and is located on the inner side of the corresponding guide rail. On the support on the seat frame, symmetrical lower support arms are hinged on the bottom plate and located on the front and rear sides of the support, the upper ends of the two lower support arms are hinged with the lower ends of the two driving blocks respectively, and the upper ends of the two driving blocks are hinged. The upper ends are hinged with upper arms, and the upper ends of the two upper arms are hinged on the top plate, of which the bottom plate, the two lower arms, the driving block, the two upper arms and the top plate form a symmetrical octagon up and down, front and back, with double protruding heads. The two screw shafts of the screw motor are respectively connected with the two driving blocks to form a screw nut drive, and the screw threads on the two driving blocks are in opposite directions. A driving roller is fixed on the side through a rotating pair, the driving roller is stuck in the clamping groove between the two arc bars of the guide rail, and a support seat plate is also installed on the seat frame, and both sides of the front end of the support seat plate are coaxial It is hinged on the chair frame, the two sides of the rear end of the support seat plate are symmetrically hinged with linkage pull rods, and the upper end of each linkage pull rod is hinged with the top plate on the corresponding side;

The pedal assist mechanism is installed at the position where the legs on both sides of the front end of the chair frame are placed. The mechanism includes a swing rod, a foot pedal, a leg guard and an electric push rod. The upper end of the swing rod is hinged to the front end of the chair frame. On the horizontally protruding fixed cantilever, the lowermost end of the swing rod is fixed with a foot pedal that protrudes inwardly, the cross-sectional shape of the leg guard is L-shaped, and a long side of the leg guard is set on the swing rod through a rotating pair. And freely rotate around the swing rod, the upper end of the shin plate is fixed with a gear sleeved on the swing rod, a rack with teeth on the side and matching with the gear is fixed on the seat frame, and the outer end of the rack is raised upward. The arc shape is consistent with the radian of the gear swinging with the swing rod, and the rack and the gear mesh to form a rack and pinion transmission, one end of the electric push rod is hinged on the seat frame, and the other end is hinged on the swing rod. , both the swing rod and the electric push rod swing in the same vertical plane.

2. The wheelchair for helping the elderly according to claim 1, wherein the top plate of the auxiliary support mechanism is hinged with arm support plates, the middle part of the arm support plate is hinged with the top plate, and the lower parts of the two ends of the arm support plate are hinged. Balance springs are fixed on the surface, and the lower ends of the balance springs are fixed on the upper surface of the top plate.

3 . The wheelchair for assisting the elderly to stand according to claim 2 , wherein the hinge shaft of the arm support plate and the top plate and the linkage rod and the hinge axis of the top plate are coaxial. 4 .

4 . The wheelchair for assisting the elderly to stand according to claim 1 , wherein the lowest swing point of the swing rod and the lowest point of the rim of the universal wheel are on the same horizontal plane. 5 .

5 . The wheelchair for assisting the elderly to stand according to claim 1 , wherein the two ends of the top plate and the two ends of the bottom plate of the auxiliary support mechanism are provided with fixing belt installation ports. 6 .

6 . The wheelchair for assisting the elderly to stand according to claim 1 , wherein the upper rear end of the chair frame is provided with a push handle extending horizontally backward. 7 .