CN113876499A

CN113876499A - A standing and lying multifunctional electric wheelchair

Info

Publication number: CN113876499A
Application number: CN202111301321.1A
Authority: CN
Inventors: 王尔琪; 张耀革
Original assignee: Zhongjin Medical Devices Taizhou Co ltd
Current assignee: Changzhou Zhongjin Medical Devices Co ltd; Zhongjin Medical Devices Taizhou Co ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-01-04
Anticipated expiration: 2041-11-04
Also published as: CN113876499B

Abstract

The invention relates to a standing and lying multifunctional electric wheelchair which comprises a fixed underframe, a backrest frame body and a cushion frame body, wherein parallel connecting rod assemblies are arranged on two sides of the cushion frame body, one end of each parallel connecting rod assembly is hinged with the fixed underframe, the other end of each parallel connecting rod assembly is hinged with one side of a conversion plate to form a parallel four-connecting-rod mechanism, the other side of the conversion plate is respectively hinged with the bottom of the backrest frame body and an armrest assembly, each armrest assembly comprises a linkage plate and a connecting rod, one end of each connecting rod is hinged with the linkage plate, the other end of each connecting rod is hinged with the conversion plate, the linkage plate is hinged to the backrest frame body, a cushion adjusting push rod used for controlling the cushion frame body to stand is connected between the fixed underframe and the cushion frame body, a connecting rod is fixedly connected between the two conversion plates, and a backrest adjusting push rod used for controlling the backrest frame body to turn over is connected between the connecting rod and the backrest frame body. The multifunctional standing and lying electric wheelchair has the main purposes of reasonable and reliable structure, flexible use and convenient and fast control.

Description

Multifunctional standing and lying electric wheelchair

Technical Field

The invention relates to a wheelchair, in particular to a standing and lying multifunctional electric wheelchair.

Background

Along with the rapid development of society, accidents are also occurring continuously, at present, 200 tens of thousands of patients with spinal paraplegia exist in China, and for the patients with inconvenient walking, the wheelchair becomes an essential tool for the patients. The electric wheelchair capable of assisting the patient to stand or lie has appeared in the market at present, so that the electric wheelchair can help the patient to carry out rehabilitation treatment, can meet more use requirements of the patient, and brings great convenience for life. However, most of the electric wheelchairs have complex structures, large size and weight, inconvenient operation and transportation and further improvement.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide the standing and lying multifunctional electric wheelchair which is simple and reliable in structure, flexible to use, convenient and quick to operate and control and accords with the human engineering mechanical design.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

a multifunctional electric wheelchair for standing and lying comprises a fixed underframe, a backrest frame body and a cushion frame body, wherein two sides of the cushion frame body are respectively provided with a parallel connecting rod assembly, one end of the parallel connecting rod component is hinged with the fixed underframe, the other end is hinged with one side of the conversion plate to form a parallel four-connecting-rod mechanism, the other side of the conversion plate is respectively hinged with the bottom of the backrest frame body and the armrest component, the armrest component comprises a linkage plate and a connecting rod, one end of the connecting rod is hinged with the linkage plate, the other end of the connecting rod is hinged with the conversion plate, the linkage plate is hinged on the backrest frame body, the armrest component is matched and connected with the conversion plates and the backrest frame body to form a parallel four-bar linkage mechanism, a cushion adjusting push rod for controlling the cushion frame body to stand is connected between the fixed underframe and the cushion frame body, a connecting rod is fixedly connected between the two conversion plates, a backrest adjusting push rod for controlling the backrest frame body to turn is connected between the connecting rod and the backrest frame body.

Furthermore, the position, close to the other end, of the parallel connecting rod assembly is supported and placed on a supporting table correspondingly arranged on the fixed underframe.

Further, parallel link assembly is including last bracing piece and the lower support bar that is upper and lower interval distribution, the support frame has set firmly on the fixed chassis, it articulates respectively on the support frame to go up bracing piece one end and lower support bar one end, it articulates respectively on the change-over board to go up the bracing piece other end and the lower support bar other end.

Furthermore, a cross rod is connected between the two lower supporting rods, one end of the cushion adjusting push rod is hinged to the fixed underframe, and the other end of the cushion adjusting push rod is hinged to the cross rod.

Further, the handrail component also comprises a handrail, and one end of the handrail is connected with the linkage plate.

Furthermore, a driving wheel device is arranged at the bottom of the fixed underframe and comprises a rear driving wheel assembly and a supporting wheel assembly.

Furthermore, a knee fixing frame is arranged on the supporting wheel component.

Furthermore, a chest fixing belt is arranged on the backrest frame body.

Furthermore, the cushion adjusting push rod and the backrest adjusting push rod are both electric push rods.

Compared with the prior art, the invention has the beneficial effects that: the electric chair cushion frame has the advantages that the normal use of a user is met, the electric chair cushion frame also has the function of assisting standing or lying, the lifting or falling of the cushion frame body and the angle adjustment of the backrest frame body are controlled through the electric push rod, and the operation and the control are flexible and reliable; adopt unique structural design simultaneously, at the in-process that the auxiliary user stood, guarantee that the angle between back support body and handrail and the ground is unchangeable all the time, need not extra regulation, accord with human engineering mechanics design, it is convenient to use, and the practicality is strong, and is rational in infrastructure ingenious.

Drawings

Fig. 1 is a perspective view of a standing and lying multifunctional electric wheelchair of the invention;

FIG. 2 is a perspective view of another perspective view of the multifunctional standing and lying electric wheelchair of the present invention;

FIG. 3 is a side view of a standing and lying multifunctional electric wheelchair of the present invention;

wherein, 1, fixing the underframe; 11. a knee fixing frame; 12. a support frame; 13. a support table; 2. a backrest frame body; 21. chest fixing belts; 3. a cushion frame body; 31. an upper support rod; 32. a lower support bar; 4. a conversion plate; 5. an armrest assembly; 51. a linkage plate; 52. a connecting rod; 53. a handrail; 6. a drive wheel device; 61. a rear drive wheel assembly; 62. a support wheel assembly; 7. a cushion adjusting push rod; 8. a connecting rod; 9. the backrest adjusts the push rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

It should be noted that, in the description of the technical solutions of the present invention, directional terms used for clearly describing technical features of the present invention, such as "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", etc., are all in accordance with the orientation of the drawings of the present invention.

Examples

As shown in fig. 1, 2 and 3, the multifunctional standing and lying electric wheelchair of the present embodiment includes a fixed chassis 1, a backrest frame 2 and a seat cushion frame 3, a driving wheel device 6 is disposed at the bottom of the fixed chassis 1, and the driving wheel device 6 includes a rear driving wheel assembly 61 and a supporting wheel assembly 62. The rear driving wheel assembly 61 is used for driving the wheelchair to move, and the specific structure of the rear driving wheel assembly 61 and the supporting wheel assembly 62 adopts the structure in the prior art, and the detailed description is omitted here. Two sides of the cushion frame body 3 are respectively provided with a parallel connecting rod assembly, one end of the parallel connecting rod assembly is hinged with the fixed underframe 1, and the other end of the parallel connecting rod assembly is hinged with one side of the conversion plate 4 to form a parallel four-bar linkage mechanism. Specifically, parallel link assembly has set firmly support frame 12 including last bracing piece 31 and the lower support rod 32 that is upper and lower interval distribution on the fixed chassis 1, goes up bracing piece 31 one end and lower support rod 32 one end and articulates respectively on support frame 12 and two pin joints are at a distance of a certain distance, goes up the bracing piece 31 other end and the lower support rod 32 other end and articulates respectively on change-over board 4 and two pin joints are at a distance of a certain distance simultaneously. By adopting the structure, because the support frame 12 is fixedly arranged, the two hinge points on the support frame are also fixedly arranged, and when the upper support rod 31 and the lower support rod 32 rotate to any angle, based on the parallelogram principle, the connecting line of the two hinge points on the conversion plate 4, which are hinged with the upper support rod 31 and the lower support rod 32, is always parallel to the connecting line of the two hinge points on the support frame 12.

Meanwhile, in the embodiment, the other side of the conversion plate 4 is hinged to the bottom of the backrest frame body 2 and the armrest assembly 5 respectively, the armrest assembly 5 comprises a linkage plate 51 and a connecting rod 52, one end of the connecting rod 52 is hinged to the linkage plate 51, the other end of the connecting rod 52 is hinged to the conversion plate 4, and the linkage plate 51 is hinged to the backrest frame body 2. In addition, the armrest assembly 5 further comprises an armrest 53, and one end of the armrest 53 is fixedly connected with the linkage plate 51.

In the embodiment, the position on the parallel connecting rod assembly close to the other end is supported and placed on the supporting table 13 correspondingly arranged on the fixed underframe 1, and a straight rod is fixedly connected between the upper supporting rod 31 and the lower supporting rod 32 at the position corresponding to the supporting table 13, so that the supporting effect is achieved, and the structural strength is improved; the seat cushion frame body 3 is in a horizontal state at this time for a user to sit. Be connected with between fixed chassis 1 and the cushion support body 3 and be used for controlling cushion support body 3 to stand cushion adjusting push rod 7, specifically, be connected with the horizontal pole between two lower support rods 32, cushion adjusting push rod 7 one end articulates on fixed chassis 1, and the other end articulates on above-mentioned horizontal pole. A connecting rod 8 is fixedly connected between the two conversion plates 4, and a backrest adjusting push rod 9 for controlling the backrest frame body 2 to overturn is connected between the connecting rod 8 and the backrest frame body 2. Specifically in this embodiment cushion adjusting push rod 7 and back adjusting push rod 9 are electric putter, convenient easy accuse, and the reaction is sensitive. In addition, the knee fixing frame 11 is provided on the support wheel assembly 62. The backrest frame body 2 is provided with a chest fixing belt 21. The knee and the chest of the user can be fixed in an auxiliary way when the user stands, and unstable standing of the user caused by weak self-energy capacity is avoided. In addition, an interface for installing objects such as a headrest, a sunshade and the like is reserved on the backrest frame body 2.

When a user who takes the wheelchair needs to stand, the cushion adjusting push rod 7 is controlled to act so as to push one end of the cushion frame body 3 close to the backrest frame body 2 to lift upwards, and therefore the user is supported to slowly rise until the user reaches a standing posture. In the process of lifting the cushion frame body 3, the included angle between the conversion plate 4 and the horizontal ground is always unchanged, so that the included angle between the linkage plate 51 and the horizontal ground is also kept unchanged, and the included angle between the backrest frame body 2 and the horizontal ground is also kept unchanged; and then realize the action of standing without adjusting the angle of the backrest frame body 2. When the user is in a standing position, the bottom end of the support wheel assembly 62 is grounded and serves as a front support to prevent the user from falling over when standing or leaning forward.

When the user who takes the wheelchair needs to adjust the angle of the back frame body 2, the back frame body 2 is rotated until the angle is satisfied by the user by controlling the back adjusting push rod 9. In the rotation process of the backrest frame body 2, according to the parallelogram principle, the included angle between the linkage plate 51 and the horizontal ground is always unchanged because the conversion plate 4 is not moved, so that the armrest 53 fixedly connected with the linkage plate 51 is always in the horizontal position without additional adjustment.

The standing and lying multifunctional electric wheelchair has the functions of assisting standing or lying while meeting the normal use of a user, controls the lifting or falling of the cushion frame body 3 and the angle adjustment of the backrest frame body 2 through the electric push rod, and is flexible and reliable to operate; adopt unique structural design simultaneously, at the in-process that the auxiliary user stood, guarantee that the angle between back support body 2 and handrail 53 and the ground is unchangeable all the time, need not extra regulation, accord with human engineering mechanics design, it is convenient to use, and the practicality is strong, and is rational in infrastructure ingenious, has good marketing prospect.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.

Claims

1. A multifunctional electric wheelchair for standing and lying, characterized in that: it comprises a fixed base frame (1), a backrest frame body (2) and a seat cushion frame body (3), and both sides of the seat cushion frame body (3) are respectively provided with A parallel link assembly, one end of the parallel link assembly is hinged with the fixed chassis (1), and the other end is hinged with one side of the conversion plate (4) to form a parallel four-bar linkage mechanism, the other side of the conversion plate (4) is respectively It is hinged with the bottom of the backrest frame body (2) and the armrest assembly (5), the armrest assembly (5) includes a linkage plate (51) and a connecting rod (52), one end of the connecting rod (52) is connected with the linkage plate (51) ) is hinged, the other end is hinged with the conversion plate (4), the linkage plate (51) is hinged on the backrest frame (2), the armrest assembly (5) is connected with the conversion plate (4), the backrest frame (2) The mating connection forms a parallel four-bar linkage mechanism, and a seat cushion adjusting push rod (7) for controlling the uprightness of the seat cushion frame body (3) is connected between the fixed base frame (1) and the seat cushion frame body (3). A connecting rod (8) is fixedly connected between the conversion plates (4), and a backrest adjusting push rod (9) for controlling the overturning of the backrest frame body (2) is connected between the connecting rod (8) and the backrest frame body (2). ).

2. A standing-lying multifunctional electric wheelchair according to claim 1, characterized in that: a position close to the other end of the parallel link assembly is supported and placed on a correspondingly arranged support table (1) on the fixed chassis (1). 13) on.

3. The standing-lying multifunctional electric wheelchair according to claim 2, wherein the parallel link assembly comprises an upper support rod (31) and a lower support rod (32) distributed at an upper and lower interval, and the A support frame (12) is fixed on the fixed base frame (1), one end of the upper support rod (31) and one end of the lower support rod (32) are respectively hinged on the support frame (12), and the upper support rod (31) ) and the other end of the lower support rod (32) are hinged on the conversion plate (4) respectively.

4. A standing-lying multifunctional electric wheelchair according to claim 3, characterized in that: a cross bar is connected between the two lower support rods (32), and one end of the cushion adjusting push rod (7) is hinged to a fixed On the bottom frame (1), the other end is hinged on the above-mentioned transverse rod.

5. A standing-lying multifunctional electric wheelchair according to claim 1 or 4, wherein the armrest assembly (5) further comprises an armrest (53), and one end of the armrest (53) is connected to a linkage plate (51). ) are connected.

6 . The standing-lying multifunctional electric wheelchair according to claim 1 , wherein a driving wheel device ( 6 ) is provided at the bottom of the fixed chassis ( 1 ), and the driving wheel device ( 6 ) includes a rear A drive wheel assembly (61) and a support wheel assembly (62).

7 . The standing-lying multifunctional electric wheelchair according to claim 1 , wherein the support wheel assembly ( 62 ) is provided with a knee fixing frame ( 11 ). 8 .

8 . The standing-lying multifunctional electric wheelchair according to claim 7 , wherein: the back frame body ( 2 ) is provided with a chest fixing belt ( 21 ). 9 .

9 . The standing-lying multifunctional electric wheelchair according to claim 1 , wherein the seat cushion adjusting push rod ( 7 ) and the backrest adjusting push rod ( 9 ) are both electric push rods. 10 .