CN201312865Y

CN201312865Y - Chair back folding mechanism for folding wheelchairs

Info

Publication number: CN201312865Y
Application number: CNU2008201570286U
Authority: CN
Inventors: 贺金明
Original assignee: SHANGHAI HUBANG MEDICAL APPLIANCES CO Ltd
Current assignee: Shanghai Hubang intelligent rehabilitation equipment Limited by Share Ltd
Priority date: 2008-12-12
Filing date: 2008-12-12
Publication date: 2009-09-23
Anticipated expiration: 2018-12-12

Abstract

The utility model relates to a chair back folding mechanism for a folding wheelchair, which comprises a chair and a chair back, wherein a pair of handles extending towards to the backside of the wheelchair are arranged at both sides of the chair back. The utility model is characterized in that the tail end of the handle is connected with a folding rod used for folding the chair back towards the middle; the middle of the folding rod is provided with a folding joint. The utility model has the advantages of artful structure and convenient folding use; when the chair back is not folded, the chair back is propped up by the folding rod; and the folding used is safe and reliable.

Description

A kind of chair back fold mechanism of folding wheel Wheel-chair

Technical field

This utility model relates to the wheelchair driving skills art field that the people with disability uses, the concrete chair back fold mechanism that relates on a kind of folding wheel Wheel-chair.

Background technology

The wheel Wheel-chair is the necessary auxiliary walking arrangement of people with disability's daily life.The wheel Wheel-chair is when normal the use, and personnel are sitting on the chair, takes turns Wheel-chair manipulation or walking, when the wheel Wheel-chair does not use, need place the wheel Wheel-chair, if common expansion is placed, then takies very big floor space, and is inconvenient to go out to carry the wheel Wheel-chair.

People have invented the folding Wheel-chair of taking turns for this reason, and general this kind of wheel Wheel-chair then still follows manually folding method on the folding and expanding operation, and it is very heavy that this method for folding shows.For personage with disabilities, folding comparatively painstaking.

The utility model content

Technical problem to be solved in the utility model is, overcomes problems of the prior art, and a kind of chair back fold mechanism of folding wheel Wheel-chair is provided, and this mechanism can fold the wheel Wheel-chair comparatively easily, especially folding the wheel Wheel-chair chair back.

In order to address the above problem the technical solution of the utility model is such:

A kind of chair back fold mechanism of folding wheel Wheel-chair, comprise the seat and the chair back, be provided with a pair of handle that stretches out to the wheelchair rear side in chair back both sides, it is characterized in that, the end of described handle is connected with one can make the chair back to the folding folding rod in centre, and this folding rod middle part is provided with folding joint.

Folding rod is the left-right symmetric structure, folding rod is followed successively by end folded piece, connecting rod, connecting cylinder, pivoted arm to the centre from two ends, folded piece one end in end is fixedlyed connected with handle, one end of the end folded piece other end and connecting rod is hinged, the other end of connecting rod is connected with an end of connecting cylinder, the other end of connecting cylinder is connected with an end of pivoted arm, and symmetrical two pivoted arms are hinged, and described folding joint is arranged in the middle of two pivoted arms.

Described folding joint comprises: be arranged on the folding button in the pivoted arm outside, be arranged on the sliding sleeve of pivoted arm inboard; Described sliding sleeve inside is provided with a spring, and sliding sleeve can be along axially the sliding to a side of pivoted arm, and described folding button is fixedlyed connected with sliding sleeve.

When needs are folding, remove the attachment on the chair back, as resting the head on by waiting parts, manually touching folding button then makes it slide to a side, folding button slides and can slide to a side by the drive sliding sleeve to a side, this moment, then folding rod was inwardly folding along the middle part hinge axes, can finish the folding of the chair back to the inboard folding rod that promotes of wheel Wheel-chair.When needs stretched, the pull-up folding rod touched folding button simultaneously round about, after folding rod stretches, unclamp folding button, then sliding sleeve is owing to the effect resilience of spring is gone in the linking arm, under the situation of not touching folding button, folding rod can not fold like this.

Beneficial effect, this utility model delicate structure, folding easy to use, folding rod can not straighten the chair back when folding, and is folding safe and reliable.

Description of drawings

Describe this utility model in detail below in conjunction with the drawings and specific embodiments;

Fig. 1 is a folding wheel Wheel-chair overall structure sketch map described in the utility model;

Fig. 2 is a folding rod structural representation described in the utility model;

Fig. 3 is a folding rod decomposition texture sketch map described in the utility model.

The specific embodiment

For technological means, creation characteristic that this utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth this utility model.

Referring to Fig. 1

Wheel Wheel-chair shown in the figure is the folding Wheel-chair of taking turns, and the wheel Wheel-chair comprises a wheelchair frame 1, and this wheelchair frame 1 seat bottom is provided with the folding stand 2 of intersection, and wheelchair frame 1 is folding to its middle part when folding, and the wheel of both sides, folding back is drawn close to the centre.Portion is provided with backrest 3 at the wheelchair back frame, and backrest 3 is the soft cloth backrest, with convenient folding.Backrest 3 both sides are provided with back rest 4, are provided with headrest by 5 above backrest 3, and the two ends of described back rest 4 are provided with the steel-tube seat that can insert, and described headrest inserts in the steel-tube seat by 5.Back rest 4 ends are connected with a folding rod 6 to the end that wheel Wheel-chair rear is extended with a pair of handle 41, two handles 41 in addition.These folding rod 6 middle parts have a folding joint 7, and folding rod 6 can be by folding joint 7 to wheel Wheel-chair folded inside.

Referring to Fig. 2, Fig. 3

Folding rod 6 is the left-right symmetric structure, and folding rod 6 is followed successively by end folded piece 61, connecting rod 62, connecting cylinder 63, pivoted arm 64 from two ends to the centre, and folding rod 6 is fixedlyed connected with handle 41 by end folded piece 61; Described end folded piece 61 1 ends are fixedlyed connected with handle, and an end of the other end and connecting rod 62 is hinged, and connecting rod 62 can be around hinge 621 to the inboard rotation of folding wheel Wheel-chair; The other end of connecting rod 62 is connected with an end of connecting cylinder 63, and this end of connecting rod 62 is the round bar end, and the round bar end inserts the connecting cylinder 63 inner bolts 631,632 that also pass through both direction fixedlys connected with connecting cylinder 63; The other end of connecting cylinder 63 is connected with an end of pivoted arm 64, and this end of pivoted arm 64 is the round bar end, and the round bar end inserts the connecting cylinder 63 inner bolts 633,634 that also pass through both direction fixedlys connected with connecting cylinder 63; Opposite side at folding rod 6 is arranged equally, seldom does narration at this.At the middle part of folding rod 6, symmetrical two pivoted arms 64 are hinged, and two pivoted arms 64 respectively have the hinged hole 641 of perk laterally, and 641 inside, hinged hole are provided with hinge 642, and pivoted arm 64 can rotate to wheel Wheel-chair folded inside along hinge 642.Described folding joint 7 is arranged in the middle of two pivoted arms.

Once more referring to Fig. 3

Further, described folding joint 7 comprises, folding button 71, sliding sleeve 72, spring 73.Described pivoted arm 64 inside have the slide opening that holds sliding sleeve 72, and sliding sleeve 72 can slide on slide-bar 74, and described spring is arranged in the sliding sleeve 72, and described folding button 71 is fixedlyed connected with sliding sleeve 72.Sliding sleeve 72 plays the effect that connects two pivoted arms 64, can drive sliding sleeve 72 and slide to a side when to the moving folding button 71 of a thruster, and when sliding sleeve 72 skidded off the slide opening of a swivel arm, pivoted arm 64 can be to wheel Wheel-chair folded inside.

When needs are folding, remove the attachment on the chair back earlier, lean on 5 parts such as grade as headrest, manually touching folding button 71 then makes it slide to a side, folding button 71 slides and can slide to a side by drive sliding sleeve 72 to a side, this moment, then folding rod 6 was inwardly folding along the middle part hinge axes, can finish the folding of the chair back to the inboard folding rod 6 that promotes of wheel Wheel-chair.When needs stretched, the pull-up folding rod 6 round about, touched folding button 71 simultaneously, after folding rod 6 stretches, unclamp folding button 71, then sliding sleeve 72 is owing to the effect resilience of spring 73 is gone in the linking arm 64, and under the situation of not touching folding button 71, folding rod 6 can not fold.

Compared with prior art, this utility model delicate structure, folding rod can straighten the chair back during expansion, and can the double care-giver of being promotes to take turns the handle of Wheel-chair, and folding operation is esy to use, safe and reliable.

More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; this utility model is not restricted to the described embodiments; that describes in the foregoing description and the description just illustrates principle of the present utility model; this utility model also has various changes and modifications under the prerequisite that does not break away from this utility model spirit and scope, and these changes and improvements all fall in claimed this utility model scope.The claimed scope of this utility model is defined by appending claims and equivalent thereof.

Claims

1, a kind of chair back fold mechanism of folding wheel Wheel-chair, comprise the seat and the chair back, be provided with a pair of handle that stretches out to the wheelchair rear side in chair back both sides, it is characterized in that, the end of described handle is connected with one can make the chair back to the folding folding rod in centre, and this folding rod middle part is provided with folding joint.

2, the chair back fold mechanism of a kind of folding wheel Wheel-chair according to claim 1, it is characterized in that, folding rod is the left-right symmetric structure, folding rod is followed successively by end folded piece, connecting rod, connecting cylinder, pivoted arm to the centre from two ends, folded piece one end in end is fixedlyed connected with handle, one end of the end folded piece other end and connecting rod is hinged, the other end of connecting rod is connected with an end of connecting cylinder, the other end of connecting cylinder is connected with an end of pivoted arm, symmetrical two pivoted arms are hinged, and described folding joint is arranged in the middle of two pivoted arms.

3, the chair back fold mechanism of a kind of folding wheel Wheel-chair according to claim 2 is characterized in that, described folding joint comprises: be arranged on the folding button in the pivoted arm outside, be arranged on the sliding sleeve of pivoted arm inboard; Described sliding sleeve inside is provided with a spring, and sliding sleeve can be along axially the sliding to a side of pivoted arm, and described folding button is fixedlyed connected with sliding sleeve.