CN112426287A

CN112426287A - Chair adjustable wheelchair

Info

Publication number: CN112426287A
Application number: CN202011419186.6A
Authority: CN
Inventors: 高刚; 高娜
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-03-02

Abstract

The present application relates to the technical field of wheelchairs, and in particular, to a seat-adjustable wheelchair, comprising a wheelchair body, a footrest provided on the front side of the wheelchair body, a seat provided above the wheelchair body, and a wheelchair provided on the rear side of the seat. The backrest, the footrest and the end of the seat are hinged on the front side of the wheelchair body through a first rotating shaft, and the backrest is hinged on the seat at an end away from the footrest through a second rotating shaft; A first drive for the foot pedal to rotate along the first axis, a second drive for driving the seat to rotate along the first axis is provided between the wheelchair body and the seat, and a second drive for driving the backrest to rotate along the second axis is provided between the seat and the backrest. third drive. With this arrangement, through the adjustment of multiple angles of the seat, the patient can sit, lie flat and stand, improve the degree of freedom of physical activity, and thereby avoid prolonged sitting and fatigue and the occurrence of pressure ulcers.

Description

Chair adjustable wheelchair

Technical Field

The application relates to the technical field of wheelchairs, in particular to a chair-adjustable wheelchair.

Background

Wheelchairs are chairs equipped with wheels to help replace walking and are classified into electric and manual folding wheelchairs. The wheelchair not only meets the requirements of physical disabilities and mobility-handicapped people for riding instead of walking, but also is more important to facilitate the family members to move and take care of the patients, so that the patients can do physical exercises and participate in social activities by means of the wheelchair.

The common wheelchair generally comprises front and rear wheels, a pedal, left and right armrests, a seat, a backrest and the like. However, the seat part of the traditional wheelchair is relatively fixed, so that the patient can only sit on the wheelchair when using the wheelchair, and the patient can feel uncomfortable and tired due to the sitting posture kept for a long time, and pressure sores are easily generated, so that the rehabilitation of the patient is not facilitated.

Therefore, how to solve the problems that the seat part of the existing wheelchair is fixed, the patient is easy to be tired and uncomfortable, and pressure sores are generated is a key technical problem to be solved by the technical personnel in the field.

Disclosure of Invention

To at least some extent overcome the problems of the related art, it is an object of the present application to provide a seat adjustment wheelchair that solves the problems of the prior art, including the problem of partial fixation of the seat, the risk of discomfort to the patient, and the risk of pressure sores. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the application are described in detail in the following.

The application provides a seat-adjustable wheelchair, which comprises a wheelchair main body, a pedal arranged on the front side of the wheelchair main body, a seat arranged above the wheelchair main body and a backrest arranged on the rear side of the seat, wherein the ends of the pedal and the seat are hinged on the front side of the wheelchair main body through a first rotating shaft, and the backrest is hinged on one end, far away from the pedal, of the seat through a second rotating shaft; the wheelchair comprises a wheelchair main body and a backrest, wherein a first drive used for driving the pedal to rotate along a first rotating shaft is arranged between the wheelchair main body and the pedal, a second drive used for driving the seat to rotate along the first rotating shaft is arranged between the wheelchair main body and the seat, and a third drive used for driving the backrest to rotate along the second rotating shaft is arranged between the seat and the backrest.

Preferably, the foot board and the backrest are linked by a link mechanism and driven by one of the first drive and the third drive.

Preferably, the link mechanism comprises a first link fixed on the pedal plate at a position close to the first rotating shaft, a second link fixed on the end of the backrest, and a transmission rod hinged between the first link and the second link, wherein the second rotating shaft is located at the connection position of the second link and the backrest.

Preferably, the two link mechanisms are arranged in bilateral symmetry, and a cross rod is connected between the end parts of the two second connecting rods far away from the second rotating shaft.

Preferably, the second drive and third drive are each provided as a linear drive, the second drive being articulated between the wheelchair body and the seat, and the third drive being articulated between the seat and the crossbar.

Preferably, the seat comprises a seat frame hinged between the footboard and the backrest and a seat cushion on the seat frame.

Preferably, the backrest comprises a main body part hinged with the seat and a telescopic part positioned above the main body part, and the telescopic part is connected with the main body part through a telescopic buckle.

Preferably, handrails are arranged on the left and right sides of the backrest, and a control handle and a control screen which are in communication connection with the first drive, the second drive and the third drive are arranged on the handrails.

Preferably, a back pillow is arranged on the main body part, and a headrest is arranged on the telescopic part.

Preferably, the pedal comprises a pedal body and a pedal bracket hinged with the seat, and a knee baffle is arranged at the front side of the pedal bracket and detachably connected to the pedal bracket through a baffle buckle.

The technical scheme provided by the application can comprise the following beneficial effects:

be provided with between wheelchair main part and the running-board and be used for driving the running-board along first pivot pivoted first drive, be provided with between wheelchair main part and the seat and be used for driving the seat along first pivot pivoted second drive, be provided with between seat and the back and be used for driving the back along second pivot pivoted third drive, through first drive, second drive and third drive alright realize the angle modulation of running-board, seat and back. When a patient needs to sit, the first drive adjusts the pedal to be in a vertical state, the second drive adjusts the seat to be in a horizontal state, and the third drive adjusts the backrest to be in a vertical state, so that the patient can conveniently step on and lean on the chair; when a patient needs to lie flat, the first drive adjusts the pedal to be in a horizontal state, the second drive adjusts the seat to be in a horizontal state, the third drive adjusts the backrest to be in a horizontal state, and the three are parallel and level to lie flat; when patient personnel need stand, the footboard is adjusted to vertical state to first drive, and the seat is adjusted to vertical state to the second drive, and the third drive is adjusted the back to vertical state, and the three is vertical, need not the auxiliary personnel and can realize standing through the seat, and is convenient and reliable. So set up, through the regulation of a plurality of angles of seat, can realize patient personnel's seat, tie lie and stand, promote the degree of freedom of health activity, and then avoid sitting fatigue for a long time to and press the production of sore.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Figure 1 is a perspective block diagram of the present seat adjustable wheelchair according to some exemplary embodiments;

FIG. 2 is a perspective view of a seat portion shown in accordance with some exemplary embodiments;

FIG. 3 is a front view of a seat portion shown according to some exemplary embodiments.

In the figure: 1. a wheelchair main body; 2. a foot pedal; 21. a pedal body; 22. a pedal bracket; 3. a seat; 31. a first link; 32. a second link; 33. a transmission rod; 34. a second drive; 35. a third drive; 4. a backrest; 41. a telescopic buckle; 42. a handrail; 43. a control handle; 44. a control screen; 5. a knee guard.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus or methods consistent with aspects of the present application.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.

Referring to fig. 1 to 3, the present embodiment provides a seat-adjustable wheelchair, which includes a wheelchair main body 1, a pedal 2, a seat 3 and a backrest 4, wherein the wheelchair main body 1 includes a frame and wheels fixed on two sides of the frame, and the frame is driven to move by the rotation of the wheels; and the footrest 2, the seat 3 and the backrest 4 constitute a seat portion of the wheelchair for a patient to sit on, specifically, the footrest 2 is located at the front side of the wheelchair body 1 for bearing the legs of the patient, the seat 3 is located above the wheelchair body 1 for bearing the entire weight of the patient, and the backrest 4 is located at the rear side of the seat 3 for the patient to lean on.

The ends of the pedal 2 and the seat 3 are hinged to the front side of the wheelchair main body 1 through a first rotating shaft, specifically, the upper end of the pedal 2, the front end of the seat 3 and the front end of the frame are hinged together through the first rotating shaft to realize the relative rotation of the three, so as to keep the frame stationary, and the pedal 2 or the seat 3 is rotated along the first rotating shaft to further realize the multi-angle adjustment of the seat, for example, the pedal 2 is adjusted to be horizontal to lift the legs, and the seat 3 is adjusted to be vertical to enable patients to stand up; the backrest 4 is hinged to the seat 3 through a second rotating shaft at an end far away from the pedal 2, specifically, the lower end of the backrest 4 is hinged to the rear end of the seat 3, so as to keep the seat 3 stationary, and the backrest 4 is rotated along the second rotating shaft, so that the adjustment of the leaning angle is realized, for example, the backrest 4 is adjusted to be horizontal and a patient can lie down.

In order to adjust the state of the seat 3 conveniently, a first drive for driving the pedal 2 to rotate along a first rotating shaft is arranged between the wheelchair main body 1 and the pedal 2, a second drive 34 for driving the seat 3 to rotate along the first rotating shaft is arranged between the wheelchair main body 1 and the seat 3, a third drive 34 for driving the backrest 4 to rotate along a second rotating shaft is arranged between the seat 3 and the backrest 4, and the angle adjustment of the pedal 2, the seat 3 and the backrest 4 can be realized through the first drive, the second drive 34 and the third drive 34. When a patient needs to sit, the first drive adjusts the footrest 2 to the vertical state, the second drive 34 adjusts the seat 3 to the horizontal state, and the third drive 34 adjusts the backrest 4 to the vertical state, so that the person steps on and leans against; when a patient needs to lie down, the first drive adjusts the pedal 2 to be in a horizontal state, the second drive 34 adjusts the seat 3 to be in a horizontal state, and the third drive 34 adjusts the backrest 4 to be in a horizontal state, so that the three are parallel and level for lying down; when patient personnel need stand, the footboard 2 is adjusted to vertical state to first drive, and the seat 3 is adjusted to vertical state to second drive 34, and the back 4 is adjusted to vertical state to third drive 34, and the three is vertical, need not the auxiliary personnel and can realize standing through the seat, and is convenient and reliable.

It should be noted that, in order to avoid the patient falling down, when the patient stands, the footrest 2, the seat 3 and the backrest 4 may be inclined at a certain angle with respect to the vertical direction for the patient to lean against; the first drive, the second drive 34, and the third drive 34 may be rotational drives or linear drives.

So set up, through the regulation of a plurality of angles of seat, can realize patient personnel's seat, tie lie and stand, promote the degree of freedom of health activity, and then avoid sitting fatigue for a long time to and press the production of sore.

In this embodiment, the pedal 2 and the backrest 4 are linked through a link mechanism, and under the action of the link mechanism, when the pedal 2 rotates clockwise relative to the first rotating shaft, the backrest 4 also rotates clockwise relative to the second rotating shaft, so that the pedal 2 and the backrest 4 rotate synchronously, and the consistency of seat adjustment is improved; in addition, one of the first drive and the third drive 34 is used for driving, so that the use of one drive can be reduced only through the action of the first drive or only through the action of the third drive 34, the use of a mechanical structure is saved, the structure is simplified, and the efficiency is improved. Here, the first drive is simplified to the form of the third drive 34+ linkage.

The linkage mechanism comprises a first linkage 31, a second linkage 32 and a transmission rod 33, the first linkage 31 is fixed on the pedal 2 and is close to the first rotating shaft, a certain distance is kept between the first linkage 31 and the first rotating shaft, so that the pedal 2 and the first linkage 31 form a lever structure, and the pedal 2 can be driven to rotate relative to the first rotating shaft by pulling or pushing the first linkage 31; the second connecting rod 32 is fixed at the end of the backrest 4, and the second rotating shaft is located at the connecting position of the second connecting rod 32 and the backrest 4, so that the second connecting rod 32 and the backrest 4 form a lever structure, and the backrest 4 can be driven to rotate relative to the second rotating shaft by pulling or pushing the second connecting rod 32; the transmission rod 33 is hinged between the first link 31 and the second link 32 to allow the first link 31 and the second link 32 to be transmitted, thereby achieving the synchronous transmission of the footrest 2 and the backrest 4. Therefore, the transmission distance of the link mechanism can be reduced through the structure of the labor-consuming lever, the driving distance is reduced, and the device is stable and reliable.

Of course, the second link 32 forms an angle with the backrest 4, and the second link 32 does not hinder the rotation of the backrest 4 when the backrest 4 and the seat 3 are in the same plane.

In some preferred schemes, in order to ensure the linkage stability of the backrest 4 and the pedal 2, two link mechanisms are symmetrically arranged and are respectively positioned at the left side and the right side of the seat 3, so that the linkage balance can be ensured; moreover, the ends of the two second connecting rods 32 far away from the second rotating shaft are connected together through the cross rod, so that the two connecting rod mechanisms can be linked together, and the firmness and the stability of the connecting rods can be ensured.

In order to improve the efficiency and stability of the drive, the second drive 34 and the third drive 34 are both arranged as linear drives, specifically, one end of the second drive 34 is hinged on the wheelchair main body 1 at a position far away from the first rotating shaft, and the other end is hinged on the seat 3 at a position far away from the first rotating shaft; the third drive 34 is hinged at one end to the seat 3 remote from the second pivot and at the other end to the cross bar. In this way, the second drive 34 and the third drive 34 have not only a driving function but also a supporting function, and ensure the connection stability of the footrest 2, the seat 3 and the backrest 4.

Here, the first driver, the second driver 34 and the third driver 34 may be configured as a hydraulic cylinder, an air cylinder or a telescopic motor, which is not described in detail herein.

In some embodiments, the seat 3 comprises a seat frame and a seat cushion on the seat frame, the seat frame is hinged between the pedal 2 and the backrest 4, the seat cushion is used for supporting, the stability of the seat 3 is enhanced, and the seat cushion can improve the comfort of the patient and prevent the pressure sore.

In particular, the second drive 34 and the third drive 34 are both hinged in a middle position of the seat frame.

Backrest 4 is including main part and pars contractilis, and wherein, the lower extreme of main part is articulated with seat 3, can supply disease personnel back to lean on, and flexible position is located the main part top, can supply disease personnel head to lean on, and the pars contractilis passes through flexible knot 41 and is connected with the main part moreover to make pars contractilis connect on the main part, conveniently adjust the flexible length of backrest 4, so that be applicable to the disease personnel of different heights. When it is desired to stand or lie flat, the backrest 4 may be lengthened.

Wherein, be provided with the back of the body pillow on the main part, be provided with the headrest on the pars contractilis, and then promote the comfortable degree of back and head when patient personnel lean on.

Further, two armrests 42 are provided on the backrest 4 and are respectively located at the left and right sides of the seat 3, so that the patient can conveniently place the elbow, which is beneficial to standing and sitting. Moreover, the armrest 42 is provided with a control handle 43 and a control screen 44, and the control handle 43 and the control screen 44 are in communication connection with the first drive, the second drive 34 and the third drive 34, and are used for controlling the driving states of the first drive, the second drive 34 and the third drive 34 through manual adjustment of patients, so that multi-angle adjustment of the seat is realized, and the seat is flexible, convenient, simple and clear.

In some embodiments, the pedal plate 2 includes a pedal body 21 and a pedal bracket 22, one end of the pedal bracket 22 is hinged to the seat 3, and the other end is fixed with the pedal body 21. The knee baffle 5 is arranged on the front side of the pedal bracket 22, when a patient needs to stand, the knee baffle 5 can play a role in protection, and the patient is prevented from kneeling when standing; and knee baffle 5 passes through baffle to detain detachably and connects on pedal support 22, specifically, the both sides of knee baffle 5 are provided with the connecting band, and the connecting band is detained fixedly with the baffle, and under the drive of baffle knot, the connecting band is fixed on pedal support 22 to make knee baffle 5 protect at patient's knee position.

It should be noted that the terms "first," "second," "third," and the like, as used herein, are not intended to limit the specific order, but merely to distinguish one element from another or function. The stated "horizontal", "vertical", "up", "down", "left" and "right" are the same when the chair-adjustable wheelchair is in a natural setting.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The multiple schemes provided by the application comprise basic schemes of the schemes, are independent of each other and are not restricted to each other, but can be combined with each other under the condition of no conflict, so that multiple effects are achieved together.

While embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are exemplary and not to be construed as limiting the present application, and that changes, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. A seat-adjustable wheelchair is characterized by comprising a wheelchair main body (1), a pedal (2) arranged on the front side of the wheelchair main body (1), a seat (3) arranged above the wheelchair main body (1) and a backrest (4) arranged on the rear side of the seat (3), wherein the ends of the pedal (2) and the seat (3) are hinged on the front side of the wheelchair main body (1) through a first rotating shaft, and the backrest (4) is hinged on one end, far away from the pedal (2), of the seat (3) through a second rotating shaft; the wheelchair comprises a wheelchair main body (1) and a seat (3), wherein a first drive for driving the pedal plate (2) to rotate along a first rotating shaft is arranged between the wheelchair main body (1) and the pedal plate (2), a second drive (34) for driving the seat (3) to rotate along the first rotating shaft is arranged between the wheelchair main body (1) and the seat (3), and a third drive (34) for driving the backrest (4) to rotate along the second rotating shaft is arranged between the seat (3) and the backrest (4).

2. The seat adjusting wheelchair according to claim 1, wherein the footboard (2) and the backrest (4) are linked by a linkage and driven by one of the first drive and the third drive (34).

3. The seat adjusting wheelchair as claimed in claim 2, wherein the linkage comprises a first link (31) fixed to the footboard (2) at a position close to the first pivot, a second link (32) fixed to the end of the backrest (4) and a transmission lever (33) hinged between the first link (31) and the second link (32), the second pivot being located at the junction of the second link (32) and the backrest (4).

4. The seat adjusting wheelchair as claimed in claim 3, wherein two of the linkage mechanisms are arranged in bilateral symmetry, and a cross bar is connected between the ends of the two second links (32) remote from the second rotation axis.

5. Seat adjusting wheelchair according to claim 4, characterised in that the second drive (34) and the third drive (34) are arranged as linear drives, the second drive (34) being articulated between the wheelchair body (1) and the seat (3) and the third drive (34) being articulated between the seat (3) and the crossbar.

6. Seat-regulated wheelchair according to claim 1, characterized in that the seat (3) comprises a seat frame hinged between the footboard (2) and the backrest (4) and a seat cushion on the seat frame.

7. The seat adjusting wheelchair as claimed in claim 1, characterised in that the backrest (4) comprises a main body part which is articulated to the seat (3) and a telescopic part which is located above the main body part and which is connected to the main body part by means of a telescopic buckle (41).

8. The seat adjusting wheelchair as claimed in claim 7, wherein armrests (42) are provided on the backrest (4) on the left and right, and a control handle (43) and a control screen (44) which are in communication connection with the first drive, the second drive (34) and the third drive (34) are provided on the armrests (42).

9. The seat adjusting wheelchair as claimed in claim 7, wherein a back rest is provided on the main body portion and a head rest is provided on the extendable portion.

10. The seat adjusting wheelchair as claimed in claim 1, wherein the footboard (2) comprises a footboard body (21) and a footboard support (22) hinged to the seat (3), and the footboard support (22) is provided at a front side thereof with a knee flap (5) and is detachably connected to the footboard support (22) by a flap buckle.