CN212631079U

CN212631079U - Multi-posture wheelchair

Info

Publication number: CN212631079U
Application number: CN202021973683.6U
Authority: CN
Inventors: 李志杰; 陈少克; 郑柏阳; 刘万鑫; 宋盼盼; 刘俊杰; 耿至锴; 陈齐升; 张天海; 姚丽; 陈思源; 陈睿
Original assignee: Shantou University
Current assignee: Shantou University
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-03-02
Anticipated expiration: 2030-09-10

Abstract

The utility model discloses a multi-posture wheelchair, include: a chair frame; the supporting component comprises a back cushion, a seat cushion and a foot pad, wherein the back cushion, the seat cushion and the foot pad are sequentially arranged from left to right; the transmission assembly comprises a first plate frame, a second plate frame, a third plate frame, a fourth plate frame and a transmission rod; the power component comprises a first linear driving device and a second linear driving device, the utility model discloses can assist the user to accomplish the posture conversion of standing posture, sitting posture and prone position alone, help the handicapped person realize the life self-care, improve the quality of life.

Description

Multi-posture wheelchair

Technical Field

The utility model relates to a medical instrument especially relates to a multi-posture wheelchair.

Background

In the society, it usually needs to have the special messenger to accompany to the inconvenient crowd of action, if the old person in daily life, need the transition between positions such as bed, seat, wheelchair, squatting pan, be a huge engineering, need two to three people help simultaneously sometimes, it is big to the manpower demand, can cause the secondary injury simultaneously at the removal process easily, but the manpower that can take care of the old person in general family is few, especially the solitary old person is even more, consequently can't satisfy the demand of looking after the old person of the inconvenient action. The existing old-people assisting apparatus in the market only has simple movement and auxiliary supporting functions, if the old people rely on the apparatus to finish posture conversion independently, if the old people stand to sit, the apparatus cannot provide effective safety guarantee for the movement of the old people, and the old people are easily injured secondarily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multi-posture wheelchair to solve one or more technical problems existing in the prior art, and at least provide a beneficial selection or creation condition.

The utility model provides a solution of its technical problem is:

a multi-posture wheelchair comprising: a chair frame; the supporting component comprises a back cushion, a seat cushion and a foot pad, wherein the back cushion, the seat cushion and the foot pad are sequentially arranged from left to right; the transmission assembly comprises a first plate frame, a second plate frame, a third plate frame, a fourth plate frame and a transmission rod, the first plate frame is fixedly connected to the bottom side of the back cushion, the second plate frame and the third plate frame are fixedly connected to the bottom side of the cushion, the fourth plate frame is fixedly connected to the bottom side of the foot pad, the third plate frame is rotatably connected to the chair frame, the fourth plate frame is rotatably connected to the third plate frame, the first plate frame is rotatably connected to the second plate frame, one end of the transmission rod is rotatably connected to the first plate frame, the other end of the transmission rod is rotatably connected to the fourth plate frame, the axis of rotation of the first rack, the axis of rotation of the fourth rack, the axis of rotation of the drive rod on the first rack, and the axis of rotation of the drive rod on the fourth rack each extend in a front-to-rear direction; power assembly, it includes first linear drive device, second linear drive device, first linear drive device has first stiff end and first expansion end, first stiff end rotate connect in on the chair frame, first expansion end rotate connect in the bottom side of cushion, first expansion end with the rotation junction of cushion is located third plate frame with the left side of the rotation junction of chair frame, second linear drive device has second stiff end and second expansion end, the second stiff end rotate connect in the bottom side of second plate frame, the second expansion end rotate connect in the bottom side of back of the body pad, the rotation axis of first stiff end, the rotation axis of first expansion end, the rotation axis of second stiff end and the rotation axis of second expansion end all extend along the fore-and-aft direction.

The technical scheme at least has the following beneficial effects: the first plate frame, the second plate frame, the third plate frame and the fourth plate frame are in transmission connection to form a quadrilateral four-link transmission mechanism, the second linear driving device is started, the reciprocating motion of the second movable end along a straight line can drive the back cushion to rotate around the cushion, the first plate frame can drive the foot cushion to rotate around the cushion through the transmission of the transmission rod, specifically, when the back cushion turns upwards, the foot cushion turns downwards, the whole body is suitable for a user to sit down, when the back cushion turns downwards, the foot cushion turns upwards, the positions between the back cushion, the cushion and the foot cushion tend to the same horizontal plane, at the moment, the whole body is suitable for the user to lie flat, thus the state conversion of sitting posture and lying posture can be completed by the user, the first linear driving device is started, the reciprocating motion of the first movable end along a straight line can drive the third plate frame to rotate around the chair frame, when the user needs to stand, the second movable end is, the cushion turns over by the horizontality gradually and tends to vertically, and the user can easily sit upright, when the user need sit down or lie flat, the user only need lean on the cushion, utilizes the second expansion end to drive the cushion and overturn downwards, and the cushion overturns to the horizontality gradually, and the user can lean on the cushion and easily sit down or lie flat, consequently, the utility model discloses can assist the user to accomplish the gesture conversion of standing posture, position of sitting and prone position alone, help the handicapped person to realize life self-care, improve quality of life.

As a further improvement of the technical scheme, the number of the transmission assemblies is not less than two along the front-back direction. A plurality of drive assembly drive back of the body pad, cushion and callus on the sole activity, and overall structure is more firm, and in the in-service use, drive assembly arranges along the fore-and-aft direction usually and is provided with two.

As a further improvement of the above technical solution, an armrest is rotatably connected to the first plate frame, and a rotation axis of the armrest extends in the front-rear direction. The user can take the hand on the handrail during the use, improves and uses experience to the handrail can rotate, uses more in a flexible way.

As a further improvement of the technical scheme, the bottom side of the chair frame is provided with a wheel hub motor and universal wheels, the number of the wheel hub motors is not less than two along the front-back direction, and the number of the universal wheels is not less than two along the front-back direction. The wheel hub motor can drive the chair frame to move, and the universal wheel rotates along with the driven wheel.

As a further improvement of the technical scheme, a leg plate is arranged on the right side of the foot pad. When the leg plate is used, a user can put legs on the leg plate, and the use experience is further improved.

As a further improvement of the technical scheme, the right side of the foot pad is provided with a directional wheel. The directional wheel can play the effect of auxiliary stay, and especially need when assisting the user to stand, the directional wheel is overturn downwards to directional wheel and ground contact, and whole is more stable.

As a further improvement of the above technical solution, the first linear driving device includes a first electric push rod, the first electric push rod has a first motor base and a first movable rod, the first motor base can drive the first movable rod to reciprocate along a straight line, the first motor base is the first fixed end, and the first movable rod is the first movable end. Utilize first electric putter as the driving source promptly, have first motor cabinet in the first electric putter, drive pivoted first revolute pair, the first sliding pair that slides on first revolute pair through first motor cabinet, and first stiff end is installed on first sliding pair, can realize sharp reciprocating motion.

As a further improvement of the above technical solution, the second linear driving device includes a second electric push rod, the second electric push rod has a second motor base and a second movable rod, the second motor base can drive the second movable rod to reciprocate along a straight line, the second motor base is the second fixed end, and the second movable rod is the second movable end. Utilize second electric putter as the driving source promptly, have the second motor cabinet in the second electric putter, drive pivoted second revolute pair, the second sliding pair that slides on the second revolute pair through the second motor cabinet, and the second stiff end is installed on the second sliding pair, can realize straight reciprocating motion.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a first posture lower elevation view of the present invention;

fig. 2 is a second posture lower elevation view of the present invention;

fig. 3 is a third posture lower elevation view of the present invention.

In the drawings: 100-chair frame, 210-back cushion, 220-seat cushion, 230-foot cushion, 310-first plate frame, 320-second plate frame, 330-third plate frame, 340-fourth plate frame, 350-driving rod, 410-first linear driving device, 420-second linear driving device, 500-armrest, 610-wheel hub motor, 620-universal wheel, 710-leg plate and 720-directional wheel.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1, 2 and 3, a multi-posture wheelchair comprises: a chair frame 100; the supporting component comprises a back cushion 210, a seat cushion 220 and a foot pad 230, wherein the back cushion 210, the seat cushion 220 and the foot pad 230 are sequentially arranged from left to right; a transmission assembly, which comprises a first plate frame 310, a second plate frame 320, a third plate frame 330, a fourth plate frame 340 and a transmission rod 350, wherein the first plate frame 310 is fixedly connected to the bottom side of the back cushion 210, the second plate frame 320 is fixedly connected to the bottom side of the seat cushion 220, the fourth plate frame 340 is fixedly connected to the bottom side of the foot cushion 230, the third plate frame 330 is rotatably connected to the chair frame 100, the fourth plate frame 340 is rotatably connected to the third plate frame 330, the first plate frame 310 is rotatably connected to the second plate frame 320, one end of the transmission rod 350 is rotatably connected to the first plate frame 310, the other end of the transmission rod 350 is rotatably connected to the fourth plate frame 340, the rotation axis of the first plate frame 310, the rotation axis of the fourth plate frame 340, the transmission rod 350 is arranged on the rotation axis of the first plate frame 310, The rotation axis of the transmission rod 350 on the fourth plate frame 340 extends in the front-rear direction; a power assembly including a first linear drive device 410, a second linear drive device 420, the first linear driving device 410 has a first fixed end and a first movable end, the first fixed end is rotatably connected to the chair frame 100, the first movable end is rotatably connected to the bottom side of the seat cushion 220, the rotary connection position of the first movable end and the seat cushion 220 is located on the left side of the rotary connection position of the third plate 330 and the chair frame 100, the second linear driving device 420 has a second fixed end and a second movable end, the second fixed end is rotatably connected to the bottom side of the second plate frame 320, the second movable end is rotatably connected to the bottom side of the back pad 210, and the rotation axis of the first fixed end, the rotation axis of the first movable end, the rotation axis of the second fixed end, and the rotation axis of the second movable end all extend in the front-back direction.

From the above, the first plate frame 310, the second plate frame 320, the third plate frame 330 and the fourth plate frame 340 are connected in a transmission manner to form a quadrilateral four-link transmission mechanism, the second linear driving device 420 is started, the reciprocating motion of the second movable end along the straight line can drive the back cushion 210 to rotate around the seat cushion 220, the first plate frame 310 can drive the foot cushion 230 to rotate around the seat cushion 220 through the transmission of the transmission rod 350, specifically, when the back cushion 210 turns upwards, the foot cushion 230 turns downwards, the whole is in the first posture at this time, and is suitable for a user to sit down, when the back cushion 210 turns downwards, the foot cushion 230 turns upwards, the back cushion 210, the seat cushion 220 and the foot cushion 230 tend to the same horizontal plane, the whole is in the second posture at this time, and is suitable for the user to lie down, thus assisting the user to complete the state conversion between the sitting posture and the lying posture, the first linear driving device 410 is started, the reciprocating motion of the first movable end along the straight line can drive the third plate frame, when the user need stand, utilize the second expansion end to promote the cushion 220 and upwards overturn, the cushion 220 is by the horizontal state tendency vertical that overturns gradually, wholly is the third gesture this moment, the user can easily sit upright, when the user need sit down or lie flat, the user only need lean on the cushion 220, utilize the second expansion end to drive the cushion 220 and overturn downwards, the cushion 220 overturns gradually to the horizontal state, the user can lean on the cushion 220 and easily sit down or lie flat, consequently, the utility model discloses can assist the user to accomplish alone the posture of standing, the posture of sitting posture and prone position conversion, help the handicapped person to realize the life self-care, improve quality of life.

In practical application, the number of the transmission assemblies is not less than two along the front-back direction. A plurality of drive assembly drive back of the body pad 210, cushion 220 and callus on the sole 230 activity, and overall structure is more firm, and in the in-service use, drive assembly arranges along the fore-and-aft direction usually and is provided with two.

In this embodiment, an armrest 500 is rotatably connected to the first plate frame 310, and a rotation axis of the armrest 500 extends in the front-rear direction. The user can be with hand lapping on handrail 500 during the use, improves and uses experience to handrail 500 can rotate, uses more in a flexible way.

In order to facilitate the movement of the user, the bottom side of the chair frame 100 is provided with a wheel hub motor 610 and a universal wheel 620, the number of the wheel hub motor 610 is not less than two, and the number of the universal wheel 620 is not less than two. The chair frame 100 can be driven to move by the hub motor 610, and the universal wheel 620 rotates as a driven wheel.

When the user needs to lean against the seat cushion 220 and change to the standing position, the feet of the user can be put on the ground to exert force, and in the embodiment, the right side of the foot pad 230 is provided with a leg plate 710. When in use, a user can put legs on the leg plate 710, so that the use experience is further improved.

In this embodiment, the right side of the foot pad 230 is provided with an orientation wheel 720. The directional wheel 720 can play the role of auxiliary support, and especially when the user needs to be assisted to stand, the directional wheel 720 is turned downwards until the directional wheel 720 is in contact with the ground, so that the whole body is more stable.

In some embodiments, the first linear driving device 410 includes a first electric push rod having a first motor seat and a first movable rod, the first motor seat can drive the first movable rod to reciprocate along a straight line, the first motor seat is the first fixed end, and the first movable rod is the first movable end. The first electric push rod is used as a driving source, the structure of the first electric push rod is the same as that of the electric screw rod, the first electric push rod is provided with a first motor seat, a first rotating pair and a first sliding pair, the first rotating pair rotates under the driving of the first motor seat, the first sliding pair slides on the first rotating pair, and the first fixed end is installed on the first sliding pair, so that the linear reciprocating motion can be realized.

In some embodiments, the second linear driving device 420 includes a second electric push rod having a second motor seat and a second movable rod, the second motor seat can drive the second movable rod to reciprocate along a straight line, the second motor seat is the second fixed end, and the second movable rod is the second movable end. Similarly, the second electric push rod is used as a driving source, the structure of the second electric push rod is the same as that of the electric screw rod, the second electric push rod is provided with a second motor seat, a second rotating pair and a second sliding pair, the second rotating pair is driven by the second motor seat to rotate, the second sliding pair slides on the second rotating pair, and the second fixed end is installed on the second sliding pair, so that the linear reciprocating motion can be realized.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. A multi-posture wheelchair, characterized in that: the method comprises the following steps:

a chair frame (100);

the supporting component comprises a back cushion (210), a seat cushion (220) and a foot pad (230), wherein the back cushion (210), the seat cushion (220) and the foot pad (230) are sequentially arranged from left to right;

a transmission assembly, which comprises a first plate frame (310), a second plate frame (320), a third plate frame (330), a fourth plate frame (340) and a transmission rod (350), wherein the first plate frame (310) is fixedly connected to the bottom side of the back cushion (210), the second plate frame (320) is fixedly connected to the bottom side of the seat cushion (220) through the third plate frame (330), the fourth plate frame (340) is fixedly connected to the bottom side of the foot cushion (230), the third plate frame (330) is rotatably connected to the chair frame (100), the fourth plate frame (340) is rotatably connected to the third plate frame (330), the first plate frame (310) is rotatably connected to the second plate frame (320), one end of the transmission rod (350) is rotatably connected to the first plate frame (310), and the other end of the transmission rod (350) is rotatably connected to the fourth plate frame (340), the rotation axis of the first plate rack (310), the rotation axis of the fourth plate rack (340), the rotation axis of the transmission rod (350) on the first plate rack (310), and the rotation axis of the transmission rod (350) on the fourth plate rack (340) all extend in the front-rear direction;

a power assembly comprising a first linear drive (410), a second linear drive (420), the first linear driving device (410) is provided with a first fixed end and a first movable end, the first fixed end is rotatably connected to the chair frame (100), the first movable end is rotatably connected to the bottom side of the cushion (220), the rotary connection position of the first movable end and the cushion (220) is positioned on the left side of the rotary connection position of the third plate frame (330) and the chair frame (100), the second linear driving device (420) is provided with a second fixed end and a second movable end, the second fixed end is rotatably connected to the bottom side of the second plate frame (320), the second movable end is rotatably connected to the bottom side of the back cushion (210), and the rotation axis of the first fixed end, the rotation axis of the first movable end, the rotation axis of the second fixed end and the rotation axis of the second movable end all extend in the front-back direction.

2. A multi-posture wheelchair in accordance with claim 1, wherein: the transmission assembly is provided with at least two in the front-back direction.

3. A multi-posture wheelchair in accordance with claim 1, wherein: an armrest (500) is rotatably connected to the first plate frame (310), and a rotation axis of the armrest (500) extends in the front-rear direction.

4. A multi-posture wheelchair in accordance with claim 1, wherein: the bottom side of chair frame (100) is provided with in-wheel motor (610) and universal wheel (620), in-wheel motor (610) are provided with along the fore-and-aft direction and are no less than two, universal wheel (620) are provided with along the fore-and-aft direction and are no less than two.

5. A multi-posture wheelchair in accordance with claim 1, wherein: the right side of the foot pad (230) is provided with a leg plate (710).

6. A multi-posture wheelchair in accordance with claim 1, wherein: the right side of the foot pad (230) is provided with an orientation wheel (720).

7. A multi-posture wheelchair in accordance with claim 1, wherein: first linear drive device (410) includes first electric putter, first electric putter has first motor cabinet and first movable rod, first motor cabinet can drive first movable rod is along sharp reciprocating motion, first motor cabinet does first stiff end, first movable rod does first movable end.

8. A multi-posture wheelchair in accordance with claim 1, wherein: second sharp drive arrangement (420) includes second electric putter, second electric putter has second motor cabinet and second movable rod, the second motor cabinet can drive the second movable rod is along sharp reciprocating motion, the second motor cabinet does the second stiff end, the second movable rod does the second movable end.