CN112370261A

CN112370261A - Adjustable wheelchair armrest mechanism

Info

Publication number: CN112370261A
Application number: CN202011238308.1A
Authority: CN
Inventors: 金元贵; 吕文; 孙健; 谷敏; 董岩; 柯旭; 施魏祥
Original assignee: Nanjing Kangni Mechanical and Electrical Co Ltd
Current assignee: Nanjing Kangni Mechanical and Electrical Co Ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-02-19

Abstract

The invention discloses an adjustable wheelchair armrest mechanism which comprises an armrest and a supporting mechanism below the armrest, wherein the supporting mechanism comprises at least one supporting rod, one end of the at least one supporting rod is movably connected with the armrest, so that the front end and the rear end of the armrest can rotate around a connecting point, the other end of the at least one supporting rod is connected with a rotating mechanism used for adjusting the rotating angle of the supporting rod to drive the armrest to move, and the rotating mechanism is fixed on the side edge of a wheelchair. The device controls the armrest to be adjusted vertically, back and forth and at multiple angles through a simple pure mechanical structure, and can meet the use diversity of customers on products.

Description

Adjustable wheelchair armrest mechanism

Technical Field

The invention relates to a wheelchair armrest, in particular to an adjustable wheelchair armrest mechanism.

Background

The common wheelchair armrests on the market generally only play a role in supporting hands, and the installation positions of the armrests, the vertical heights of the armrests and the left and right widths of the armrests cannot be adjusted according to the body sizes of users. The single nature of ordinary wheelchair handrail has a lot of inconveniences to the user uses, can't satisfy the customer and use the variety to the product.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide an adjustable wheelchair armrest mechanism which can control the armrest to be adjusted up and down, back and forth and at multiple angles through a simple mechanical structure.

The technical scheme is as follows: the adjustable wheelchair armrest mechanism comprises an armrest and a supporting mechanism below the armrest, wherein the supporting mechanism comprises at least one supporting rod, one end of the at least one supporting rod is movably connected with the armrest, so that the front end and the rear end of the armrest can rotate around a connecting point, the other end of the at least one supporting rod is connected with a rotating mechanism used for adjusting the rotating angle of the supporting rod to drive the armrest to move, and the rotating mechanism is fixed on the side edge of the wheelchair.

Preferably, the rotating mechanism comprises a fixed part fixed on the side of the wheelchair and a rotating part which can rotate relative to the fixed part and is used for fixing the supporting rod.

Preferably, the fixed part is a hollow disc, the rotating part comprises a rotatable gear embedded in the hollow disc and a through groove fixedly connected with the gear and used for inserting the supporting rod, and a first limiting part used for limiting the gear is arranged on the outer circular surface of the hollow disc.

Preferably, the supporting rod can slide up and down in the through groove, and the through groove is provided with a second limiting part for limiting the supporting rod.

Preferably, the support rod is a telescopic rod.

Preferably, the support rod comprises an outer rod fixed on the rotating mechanism and an inner rod moving up and down in the outer rod, and the outer rod is provided with a third limiting part used for limiting the inner rod.

Preferably, a sliding rail along the depth direction of the wheelchair seat is fixed on the side edge of the wheelchair, and the rotating mechanism is movably fixed in the sliding rail.

Preferably, the supporting mechanism is movably provided with a side blocking mechanism for adjusting the width of the wheelchair.

Preferably, the inner rod and the outer rod are respectively provided with a limiting hole at intervals, and the third limiting part is a telescopic pin inserted into the limiting hole.

Preferably, the side blocking mechanism is fixed on the supporting mechanism through a magnet assembly.

Has the advantages that: compared with the prior art, the invention has the following remarkable effects: 1. the up-down, front-back and multi-angle adjustment of accessible simple mechanical structure control handrail can satisfy the customer and to the variety of product use. 2. The installation position of the handrail can be adjusted freely and quickly and fixed back and forth according to the seat depth of a user; 3. the height of the handrail can be adjusted and fixed up and down according to different use conditions such as the height of a user, the height of a cushion and the like; 4. the distance between the left handrail and the right handrail can be adjusted according to the size of the user; 5. the side baffles can be carried by the armrests and adjusted and fixed up and down according to different use conditions of the height of a user and the cushion, and are not affected by the height adjustment of the armrests; 6. the left width and the right width of the side gear can be adjusted according to the body size of the user; 7. the left and right of the handrail can be switched to install other accessories such as a controller and the like; 8. the armrests can rotate to the lower position of the side edge of the wheelchair along with the rotating mechanism, so that people can get on or off the wheelchair from the side surface conveniently.

Drawings

FIG. 1 is a schematic front view of the apparatus of the present invention;

FIG. 2 is a schematic diagram of the back side of the device of the present invention;

FIG. 3 is a schematic view of a rotary mechanism of the apparatus of the present invention;

FIG. 4 is a schematic view of a support bar structure of the device of the present invention;

fig. 5 is a schematic structural view of the device of the invention mounted on a wheelchair.

Detailed Description

The invention is described in further detail below with reference to the drawings.

As shown in fig. 1-5, the invention discloses an adjustable wheelchair armrest mechanism, which comprises an armrest 1 and a support mechanism 2 below the armrest 1, wherein the support mechanism 2 comprises two support rods, and the number of the support rods is at least one. One end of the two support rods is movably connected with the handrail 1 through screws respectively, gaps are reserved at the connection positions of the screws, so that the front end and the rear end of the handrail 1 can independently rotate around the connection points of the two support rods, and the handrail 1 can be adjusted to be high at one end and low at the other end as required. The other ends of the two support rods are connected with a rotating mechanism 3 which is used for adjusting the rotating angle of the support rods to drive the armrests 1 to move back and forth, a slide rail 5 along the depth direction of the wheelchair seat is fixed on the side edge of the wheelchair, and the rotating mechanism 3 is movably fixed in the slide rail 5, can move along the slide rail 5 and is fixed at a required position through screws.

The rotating mechanism 3 comprises a fixed part 31 fixed on the side edge of the wheelchair and a rotating part which can rotate relative to the fixed part 31 and is used for fixing the supporting rod; the fixed member 31 is a hollow disc, the rotating member includes a gear 32 embedded in the hollow disc and rotatable, and a through groove 33 fixedly connected with the gear 32 and used for inserting the support rod, and a first limiting member 34 for limiting the gear 32 is disposed on an outer circumferential surface of the hollow disc. The bracing piece is telescopic, and wherein, the bracing piece is including the activity be fixed in outer pole 22 on rotary mechanism 3, and the interior pole 21 that reciprocates in outer pole 22, is equipped with the third locating part that is used for spacing interior pole 21 on the outer pole 22, and interior, outer pole 22 are last to correspond the interval respectively and are equipped with spacing hole, and the third locating part is for inserting the telescopic pin in the spacing hole. The outer rod 22 can slide up and down in the through groove 33, and the through groove 33 is provided with a second limiting member 4 for limiting the supporting rod, and the limiting members of this embodiment are all bolts. The supporting mechanism 2 is movably provided with a side blocking mechanism 6 for adjusting the width of the wheelchair. The side stop mechanism 6 is fixed to the support mechanism 2 by a magnet assembly 7.

The working process is as follows: when the height of the handrail needs to be adjusted, the third limiting piece is loosened, the inner rod is lifted upwards or pressed downwards to a proper position, so that the third limiting piece is inserted into the limiting holes corresponding to the inner rod and the outer rod, and the relative positions of the inner rod and the outer rod are fixed; the second limiting part 4 can also be loosened, the armrest is pressed downwards or lifted upwards to a required position, and then the bolt 4 is screwed and fixed. When the angle of the handrail or the front and back height of the handrail needs to be adjusted, the bolt 34 is loosened, the handrail is held to rotate to a required position, and the bolt 34 is screwed and fixed.

Claims

1. The utility model provides an adjustable wheelchair handrail mechanism, includes supporting mechanism (2) of handrail (1) and handrail (1) below, its characterized in that, supporting mechanism (2) include at least one bracing piece, the one end and handrail (1) swing joint of at least one bracing piece make the front and back end of handrail (1) rotate around the tie point, and the other end is connected with and is used for adjusting the bracing piece and rotates rotary mechanism (3) that drive handrail (1) and remove, rotary mechanism (3) are fixed in the wheelchair side.

2. The adjustable wheelchair armrest mechanism of claim 1, characterised in that the swivel mechanism (3) comprises a fixed part (31) fixed to the side of the wheelchair, a swivel part which is rotatable relative to the fixed part (31) and serves for fixing the support bar.

3. The adjustable wheelchair armrest mechanism of claim 2, wherein the fixed member (31) is a hollow disk, the rotating member comprises a gear (32) rotatably embedded in the hollow disk, a through slot (33) fixedly connected with the gear (32) for inserting the support rod, and a first limiting member (34) for limiting the gear (32) is arranged on the outer circumferential surface of the hollow disk.

4. The adjustable wheelchair armrest mechanism of claim 3, wherein the support rod can slide up and down in a through slot (33), and a second limit member (4) for limiting the support rod is arranged on the wall of the through slot (33).

5. The adjustable wheelchair armrest mechanism of claim 1 wherein the support rod is a telescoping rod.

6. The adjustable wheelchair armrest mechanism of claim 5, wherein the support rods comprise an outer rod (22) fixed on the rotating mechanism (3) and an inner rod (21) moving up and down in the outer rod (22), and a third limiting part for limiting the inner rod (21) is arranged on the outer rod (22).

7. The adjustable wheelchair armrest mechanism of claim 1, wherein a slide rail (5) is fixed on the side of the wheelchair in the depth direction of the wheelchair seat, and the rotating mechanism (3) is movably fixed in the slide rail (5).

8. The adjustable wheelchair armrest mechanism of claim 1, characterised in that the support mechanism (2) is movably provided with a side stop mechanism (6) for adjusting the width of the wheelchair.

9. The adjustable wheelchair armrest mechanism of claim 6, wherein the inner rod (21) and the outer rod (22) are respectively provided with a limiting hole at intervals, and the third limiting member is a telescopic pin inserted into the limiting hole.

10. The adjustable wheelchair armrest mechanism of claim 8, characterised in that the side stop mechanism (6) is fixed to the support mechanism (2) by means of a magnet assembly (7).