CN211326235U

CN211326235U - Electronic wheelchair backrest adjustment mechanism

Info

Publication number: CN211326235U
Application number: CN201921715110.0U
Authority: CN
Inventors: 范志清
Original assignee: Kunshan Aoshida Electric Technology Co ltd
Current assignee: Kunshan Aoshida Electric Technology Co ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-08-25
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses an electronic backrest adjustment mechanism of wheelchair, which comprises a seat, one side at seat top is seted up flutedly, the recess is the semi-annular, sliding connection has the back in the inner chamber of recess, the fluting has been seted up to the inside of back, the sliding interlude is connected with the montant in the grooved inner chamber, grooved inner wall middle part fixedly connected with stopper, the montant alternates with the stopper sliding, the fixed block that has cup jointed of outer wall of montant, just the fixed block is located the below of stopper, fixed surface is connected with the spring on the fixed block, just the spring activity cup joints in the outer wall of montant. The utility model discloses a rotatable design, the back is rotatable to different positions and fix for the disabled person sits and also can reliably live the back in the different health position of change when the wheelchair, has improved the travelling comfort of wheelchair greatly, and the practicality is stronger.

Description

Electronic wheelchair backrest adjustment mechanism

Technical Field

The utility model relates to an electronic wheelchair field, in particular to electronic wheelchair back adjustment mechanism.

Background

Along with the continuous development of economy, the more electronic wheelchair of function is used by more and more disabled person, and electronic wheelchair can adjust the front and back position, high from top to bottom, back angle of wheelchair through the control of motor, and more luxurious still can adjust thigh support, lumbar support etc. but present electronic wheelchair back generally all is located the rear of wheelchair seat, can not adjust the relative position of back and seat, and this just leads to the disabled person to sit and just can not lean on the back when wanting to alternate different health position on the wheelchair for the comfort level of wheelchair reduces.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electronic round of back adjustment mechanism to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an electronic backrest adjustment mechanism of wheelchair, includes the seat, one side at seat top is seted up flutedly, the recess is the semi-annular, sliding connection has the back in the inner chamber of recess, the fluting has been seted up to the inside of back, sliding interlude is connected with the montant in the grooved inner chamber, grooved inner wall middle part fixedly connected with stopper, the montant alternates with the stopper sliding, the fixed block has been cup jointed to the outer wall of montant, just the fixed block is located the below of stopper, fixed surface is connected with the spring on the fixed block, just the spring activity cup joints in the outer wall of montant.

Preferably, a base is arranged below the seat plate, a sleeve is fixedly connected to the upper surface of the base, an air cylinder is fixedly connected to the bottom of the inner wall of the sleeve, and the output end of the air cylinder is in transmission connection with the seat plate.

Preferably, the sliding grooves are symmetrically formed in one side of the inner wall of the groove, the sliding block is fixedly connected to the back face of the backrest and located in the inner cavity of the groove, and the sliding block is connected with the seat plate in a sliding mode through the sliding grooves.

Preferably, the bottom fixedly connected with fixture block of montant, the bottom equidistance of recess inner wall is seted up at least three draw-in groove with fixture block matched with.

Preferably, the top end of the vertical rod is fixedly connected with a headrest, and the headrest is positioned above the backrest.

Preferably, the armrests are fixedly connected to both sides of the backrest.

The utility model discloses a technological effect and advantage:

1. the utility model adopts the design mode that the backrest can be rotated, and the backrest can be rotated to different directions and fixed, so that the disabled can lean against the backrest when sitting on the wheelchair by changing the sitting posture, thereby greatly improving the comfort of the wheelchair and having stronger practicability;

2. the utility model discloses a design of cylinder, the output of cylinder is connected with the lower surface middle part transmission of seat, and the user can make the output of cylinder be concertina movement with the cylinder circular telegram to drive the seat motion, the height on the relative ground of adjustable seat, the crowd that is fit for different heights uses the wheelchair.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the sectional structure of the groove of the present invention.

Fig. 3 is a schematic view of the cross-sectional structure of the vertical rod of the present invention.

Fig. 4 is the structure diagram of the cylinder of the present invention.

In the figure: 1. a seat plate; 2. a groove; 3. a backrest; 4. a chute; 5. a slider; 6. grooving; 7. a vertical rod; 8. a clamping block; 9. a card slot; 10. a base; 11. a cylinder; 12. a limiting block; 13. a fixed block; 14. a spring; 15. a headrest; 16. a handrail; 17. a sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides an electric wheelchair backrest adjusting mechanism as shown in figures 1-4, which comprises a seat plate 1, wherein the seat plate 1 is circular, one side of the top of the seat plate 1 is provided with a groove 2, the groove 2 is semi-annular, a backrest 3 is connected in the inner cavity of the groove 2 in a sliding way, a sliding groove 4 is symmetrically arranged on one side of the inner wall of the groove 2, a sliding block 5 is fixedly connected on the back surface of the backrest 3 and positioned in the inner cavity of the groove 2, the sliding block 5 is connected with the seat plate 1 in a sliding way through the sliding groove 4, a groove 6 is arranged in the backrest 3, a vertical rod 7 is connected in the inner cavity of the groove 6 in a sliding and penetrating way, one end of the vertical rod 7 extends out of the groove 6, the bottom of the vertical rod 7 is fixedly connected with a clamping block 8, at least three clamping grooves 9 matched with the clamping block 8 are arranged in the bottom of the, fixed block 13 has been cup jointed to the outer wall of montant 7, and fixed block 13 is located the below of stopper 12, fixed surface is connected with spring 14 on fixed block 13, and spring 14 activity cup joints in the outer wall of montant 7, when the user need alternate the position of sitting and sit on the wheelchair, can mention montant 7 earlier, montant 7 drives fixture block 8 and breaks away from one of them draw-in groove 9, fixed connection is in compression state at the spring 14 on fixed block 13 surface this moment, then can rotate back 3 to suitable position, later release montant 7, spring 14 resets this moment, montant 7 drives fixture block 8 card under spring 14's elastic force effect and advances in another one of them draw-in groove 9, thereby make back 3 fix in suitable position.

The below of seat 1 is provided with base 10, the last fixed surface of base 10 is connected with sleeve 17, the bottom fixedly connected with cylinder 11 of sleeve 17 inner wall, sleeve 17 has the effect of protection cylinder 11, can prevent that cylinder 11 from receiving factors such as external force and damaging, the life of cylinder 11 has been improved greatly, cylinder 11 is through external switch and external power source electric connection, the output and the seat 1 transmission of cylinder 11 are connected, when the user need adjust the height of wheelchair seat 1, the external switch that links to each other with cylinder 11 can be opened and cylinder 11 is makeed the circular telegram, make cylinder 11's output be concertina movement, thereby drive seat 1 motion, the height on adjustable seat 1 relative ground, the crowd who is fit for different heights uses the wheelchair.

The top fixedly connected with headrest 15 of montant 7, and headrest 15 is located the top of back 3, make things convenient for people to lean on the head on headrest 15 when sitting on the wheelchair, the outside parcel of headrest 15 has the leather sheath, inside packing has the cavernosum, make people sit and feel soft comfortable when leaning on headrest 15 with the head on the wheelchair, the equal fixedly connected with handrail 16 in both sides side of back 3, people can put the hand on handrail 16 when sitting on the wheelchair, the inside cavernosum that also has filled of handrail 16, the travelling comfort of people sitting on the wheelchair has been improved greatly.

This practical theory of operation:

when a user sits on the wheelchair and needs to adjust the height of the seat plate 1 of the wheelchair, the external switch connected with the cylinder 11 can be opened to electrify the cylinder 11, so that the output end of the cylinder 11 makes telescopic motion, thereby driving the seat plate 1 to move, the height of the seat plate 1 relative to the ground can be adjusted, the cylinder 11 is positioned in the inner cavity of the sleeve 17, the sleeve 17 can play a role of protecting the cylinder 11, the cylinder 11 is prevented from being damaged by factors such as external force and the like, the service life of the cylinder 11 is greatly prolonged, when the user needs to change the sitting posture to sit on the wheelchair, the vertical rod 7 can be lifted firstly, the vertical rod 7 drives the fixture block 8 to be separated from the clamp groove 9, the spring 14 fixedly connected to the surface of the fixed block 13 is in a compressed state, then the backrest 3 can be rotated to a proper direction, then the vertical rod 7 is released, the spring 14 is reset at the moment, the vertical rod 7 drives the fixture, thereby fixing the backrest 3 at a proper position, and enabling people to lean against the backrest 3 when sitting on the wheelchair on one side in a changed sitting posture.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an electronic wheelchair backrest adjustment mechanism, includes seat (1), its characterized in that: one side at seat (1) top is seted up fluted (2), recess (2) are the semi-annular, sliding connection has back (3) in the inner chamber of recess (2), fluting (6) have been seted up to the inside of back (3), sliding interlude is connected with montant (7) in the inner chamber of fluting (6), the inner wall middle part fixedly connected with stopper (12) of fluting (6), montant (7) and stopper (12) sliding interlude are connected, the outer wall of montant (7) is fixed to cup joint has fixed block (13), just fixed block (13) are located the below of stopper (12), fixed surface is connected with spring (14) on fixed block (13), just spring (14) activity is cup jointed in the outer wall of montant (7).

2. The electric wheelchair backrest adjusting mechanism of claim 1, wherein: the seat is characterized in that a base (10) is arranged below the seat (1), a sleeve (17) is fixedly connected to the upper surface of the base (10), an air cylinder (11) is fixedly connected to the bottom of the inner wall of the sleeve (17), and the output end of the air cylinder (11) is in transmission connection with the seat (1).

3. The electric wheelchair backrest adjusting mechanism of claim 1, wherein: the seat is characterized in that sliding grooves (4) are symmetrically formed in one side of the inner wall of the groove (2), a sliding block (5) is fixedly connected to the back face of the backrest (3) and located in the inner cavity of the groove (2), and the sliding block (5) is connected with the seat plate (1) in a sliding mode through the sliding grooves (4).

4. The electric wheelchair backrest adjusting mechanism of claim 1, wherein: the bottom fixedly connected with fixture block (8) of montant (7), at least three draw-in groove (9) with fixture block (8) matched with have been seted up to the bottom equidistance of recess (2) inner wall.

5. The electric wheelchair backrest adjusting mechanism of claim 1, wherein: the top end of the vertical rod (7) is fixedly connected with a headrest (15), and the headrest (15) is located above the backrest (3).

6. The electric wheelchair backrest adjusting mechanism of claim 1, wherein: and the two sides of the backrest (3) are fixedly connected with armrests (16).