CN203169470U

CN203169470U - Foldable back structure of wheelchair

Info

Publication number: CN203169470U
Application number: CN 201320123809
Authority: CN
Inventors: 吴子琴
Original assignee: TAICANG TENGHUI METAL PRODUCTS CO Ltd
Current assignee: TAICANG TENGHUI METAL PRODUCTS CO Ltd
Priority date: 2013-03-19
Filing date: 2013-03-19
Publication date: 2013-09-04
Anticipated expiration: 2023-03-19

Abstract

The utility model discloses a foldable back structure of a wheelchair. The foldable back structure comprises a first movable joint shaft, a second movable joint shaft, a locking control component and a connecting shaft. One end of the first movable joint shaft is of a hollow shell structure, one end of the second movable joint shaft is sleeved in the hollow shell structure of the first movable joint shaft, one end of the second movable joint shaft is further provided with a through hole, two side faces of the hollow shell structure of the first movable joint shaft are respectively provided with a second pin hole, the through hole is matched with the two second pin holes, and a connecting shaft penetrates through the through hole and the two second pin holes. The locking control component is used for fixing or releasing relative positions of connection portions of the first movable joint shaft and the second movable joint shaft. The first movable joint shaft can revolve around the connecting shaft, and the connecting shaft is composed of an internal thread plain end bolt and a plain end screw, wherein the thread of the internal thread plain end bolt is matched with the thread of the plain end screw. Due to the mode, quick assembly can be achieved, a user can conveniently fold the foldable back structure, and the foldable back structure cannot be abraded after being folded for many times and is durable.

Description

A kind of Wheelchair back folding structure

Technical field

This utility model relates to the wheelchair apparatus field, particularly relates to a kind of Wheelchair back folding structure.

Background technology

Wheelchair is specific crowd as its function setting of medical special equipment service object, to satisfy the needs that they ride instead of walk.Along with technological progress, living condition improve, to the also increase day by day of functional requirement of wheelchair, its each parts of inevitable requirement are updated, to adapt to the user's request that improves constantly.In order to improve comfortableness, present wheelchair device becomes increasingly complex, and has not only installed power facility additional, saves manual fatigue, has also strengthened the structure setting, makes its easy to use and multifunction as far as possible, and wherein folding backrest namely is wherein one of to improve.

Wheelchair back folding of the prior art mechanism is connected and fixed frame connecting piece and backrest connector with screw, one end of screw has projection, use when making things convenient for the client folding, when assembling, the workman needs an end of projection is placed on the inboard of Wheelchair back folding mechanism, and the other end need be used fixed by nut behind the screw fit on, operate more loaded down with trivial details, the waste man-hour; And the Wheelchair back folding mechanism of this employing screw assembling operate effort when fully collapsible invalid's chair, and very great strength could be with frame connecting piece and backrest connector rotary folding for need.

The utility model content

At above-mentioned deficiency of the prior art, this utility model main purpose provides a kind of Wheelchair back folding structure, can realize quick assembling, and needs to pull spanner when folding and get final product, need not very great strength, can folding effect better and can bear repeatedly and foldingly can not wear and tear.

For achieving the above object, the technical solution adopted in the utility model is: a kind of Wheelchair back folding structure, comprise first articulated shaft, second articulated shaft, lock control parts and connecting axle, described first articulated shaft, one end is the hollow shell-like structure, and an end of described second Movable joint is set in the hollow shell-like structure of described first articulated shaft; The hollow shell-like structure of described first articulated shaft is provided with first pin-and-hole, described second articulated shaft, one end is provided with counterbore, described lock control parts comprise spanner, latch, described latch passes described first pin-and-hole, counterbore and spanner successively, and described first articulated shaft and second articulated shaft and spanner are fixed; One end of described second articulated shaft also is provided with a through hole, the two sides of the hollow shell-like structure of described first articulated shaft are respectively equipped with second pin-and-hole, described through hole and described two second pin-and-holes are complementary, and described connecting axle runs through described through hole and described two second pin-and-holes; Described lock control parts are used for the relative position of the coupling part of described first articulated shaft and second articulated shaft being fixed or being discharged; Described first articulated shaft can rotate around described connecting axle; Described connecting axle is made up of the flat mouthful bolt of female thread and a flat mouthful screw that one group of screw thread is complementary.

Preferably, described first articulated shaft and second articulated shaft are made by aluminum alloy materials.

The screw device of the prior art of comparing, Wheelchair back folding structure described in the utility model adopts the flat mouthful bolt of the female thread that matches and flat mouthful of screw assembling, during assembling, the workman only needs the flat mouthful bolt of female thread is injected through hole, to put down on the flat mouthful bolt of mouthful screw precession female thread getting final product, easy to assembly quick.

The beneficial effects of the utility model are: this utility model Wheelchair back folding structure can be assembled fast, and operation when making things convenient for user folding, user need not just wheelchair to be dismantled very energetically folding, and should can repeatedly fold the nothing wearing and tearing by the folding back structure, and is durable in use.

Description of drawings

Fig. 1 is the STRUCTURE DECOMPOSITION sketch map of this utility model Wheelchair back folding structure one preferred embodiment;

Fig. 2 is the assembling sketch map of Wheelchair back folding structure shown in Figure 1;

Fig. 3 is the folded state sketch map of Wheelchair back folding structure shown in Figure 1;

The labelling of each parts is as follows in the accompanying drawing: 1-first articulated shaft, 2-second articulated shaft, 3-latch, 4-spanner, 10-first pin-and-hole, 11-second pin-and-hole, 20-counterbore, 21-through hole.

The specific embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described in detail, thereby so that advantage of the present utility model and feature can be easier to be it will be appreciated by those skilled in the art that protection domain of the present utility model is made more explicit defining.

See also Fig. 1 and Fig. 2, this utility model embodiment: a kind of Wheelchair back folding structure, comprise first articulated shaft 1, second articulated shaft 2, lock control parts and connecting axle, first articulated shaft, 1 one ends are the hollow shell-like structure, and an end of second Movable joint 2 is set in the hollow shell-like structure of first articulated shaft 1; The hollow shell-like structure of first articulated shaft 1 is provided with first pin-and-hole 10, second articulated shaft, 2 one ends are provided with counterbore 20, described lock control parts comprise spanner 4, latch 3, and latch 3 passes first pin-and-hole 10, counterbore 20 and spanner 4 successively first articulated shaft 1 and second articulated shaft 2 and spanner 4 are fixed; The two sides that one end of second articulated shaft 2 also is provided with the hollow shell-like structure of a through hole 21, the first articulated shafts 1 are respectively equipped with second pin-and-hole 11, and through hole 21 and two second pin-and-holes 11 are complementary, and described connecting axle runs through through hole 21 and two second pin-and-holes 11; Described lock control parts are used for the relative position of the coupling part of first articulated shaft 1 and second articulated shaft 2 being fixed or being discharged; First articulated shaft 1 can rotate around described connecting axle; Described connecting axle is made up of the flat mouthful bolt of female thread and a flat mouthful screw that one group of screw thread is complementary.

In the present embodiment, first articulated shaft 1 and second articulated shaft 2 are made by aluminum alloy materials.

See also Fig. 3, when Wheelchair back folding structure described in the utility model need fold, the cocked spanner that only need make progress, treat first pin-and-hole 10 that latch 3 breaks away from first articulated shaft 1 after, first articulated shaft 1 rotated around connecting axle get final product.

The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes this utility model description and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims

1. Wheelchair back folding structure, it is characterized in that, comprise first articulated shaft, second articulated shaft, lock control parts and connecting axle, described first articulated shaft, one end is the hollow shell-like structure, and an end of described second Movable joint is set in the hollow shell-like structure of described first articulated shaft; The hollow shell-like structure of described first articulated shaft is provided with first pin-and-hole, described second articulated shaft, one end is provided with counterbore, described lock control parts comprise spanner, latch, described latch passes described first pin-and-hole, counterbore and spanner successively, and described first articulated shaft and second articulated shaft and spanner are fixed; One end of described second articulated shaft also is provided with a through hole, the two sides of the hollow shell-like structure of described first articulated shaft are respectively equipped with second pin-and-hole, described through hole and described two second pin-and-holes are complementary, and described connecting axle runs through described through hole and described two second pin-and-holes; Described lock control parts are used for the relative position of the coupling part of described first articulated shaft and second articulated shaft being fixed or being discharged; Described first articulated shaft can rotate around described connecting axle; Described connecting axle is made up of the flat mouthful bolt of female thread and a flat mouthful screw that one group of screw thread is complementary.

2. Wheelchair back folding structure according to claim 1 is characterized in that, described first articulated shaft and second articulated shaft are made by aluminum alloy materials.