CN2329243Y

CN2329243Y - Folding device for chair

Info

Publication number: CN2329243Y
Application number: CN 98203215
Authority: CN
Inventors: 姚妙芳
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-08
Filing date: 1998-04-08
Publication date: 1999-07-21
Anticipated expiration: 2008-04-08

Abstract

The utility model relates to a folding device for a chair, comprising a reverse U-shaped main foot frame which is movably riveted with an H-shaped secondary foot frame. The utility model is characterized in that the top end of the secondary foot frame is movably riveted with a U-shaped linkage frame. Two pivoting plates with equal length are provided with a main groove, a secondary groove and a plurality of through holes; a closing end rod on the top end of the main foot frame is movably inserted into the main groove; the linkage frame on the top end of the secondary foot frame is movably inserted into the secondary groove; screws are penetrated through the through holes on the pivoting plates, the pivoting plates are fixed on the bottom of a seat pad, and the seat pad is pivoted with the foot frame. The utility model has the advantages of light structure and stable placement. The seat pad and the foot frame are combined through a pivoting method, and thus the utility model is convenient for folding and unfolding, and the occupied space in storage is reduced.

Description

The folding mechanism of platform chair

The utility model relates to the platform chair, refers in particular to the folding mechanism of a kind of chair.

Platform chair commonly used mainly is made up of chassis A, pillar B, seat cushion C and foot-operated ring D as shown in Figure 1, and its major defect is:

1, structure is the state of immobilizing, and can't simple and easyly decompose, recombinate and folding folding, and takies bigger space in seasoning or the transportation;

2, for making it firm, the weight on chassis and diameter are all bigger, and not only consumption material is many, also move difficulty, cause and use inconvenience.

The purpose of this utility model is to provide the folding mechanism of a kind of chair, overcomes the drawback of prior art, reaches simple in structure and lightly, conveniently folds expansion and reduce the purpose that seasoning takes up room.

The purpose of this utility model is achieved in that the folding mechanism of a kind of chair, comprise the intermediate active riveted joint of main foot rest with the inferior foot rest of " H " type of " being down U ", the top and the movable riveted joint of the link span that is " U " type that it is characterized in that this time foot rest, two isometric pivot connecting plates are provided with main groove, inferior groove and most perforation, the closing end bar on this main foot rest top is movable to embed in this main groove, the link span on this time foot rest top is movable to embed in this time groove, the perforation that screw passes on this pivot connecting plate is fixed on the bottom of seat cushion with this pivot connecting plate, and seat cushion and foot rest are articulated.

Major advantage of the present utility model is that structure is light and handy and placement is firm, and its seat cushion combines by the pivot joint method with foot rest, conveniently folds expansion, reduces taking up room in seasoning or the transportation.

Be described in detail as follows below in conjunction with accompanying drawing:

Fig. 1 is the structural representation of platform chair commonly used.

Fig. 2 is structural representation of the present utility model.

Fig. 3 is STRUCTURE DECOMPOSITION figure of the present utility model.

Fig. 4 is a folding schematic diagram of the present utility model.

Consult Fig. 2 and Fig. 3, the utility model comprises seat cushion 1, main foot rest 2 and inferior foot rest 3, and wherein main foot rest 2 is " U " type, and the bottom is provided with tranverse connecting rod 21 near openend and is connected and fixed, and the top closing end forms closing end bar 23.

Inferior foot rest 3 is " H " type, is made of the affixed connecting rod 31 in centre of the body of rod of two parallel symmetries.In the corresponding centre of main foot rest 2 with time foot rest 3, riveting into side-looking by rivet 22 activities is " X " type.Rivet by rivet 30 and link span 4 activities that are " U " type on top at inferior foot rest 3, and other is provided with two isometric pivot connecting plates 5, which is provided with main groove 50, inferior groove 51 and most perforation 52.Closing end bar 23 with main foot rest 2 during winding embeds in the main groove 50 of pivot connecting plates 5, and the link span 4 on inferior foot rest 3 tops is embedded in time grooves 51, and the perforation 52 of passing pivot connecting plate 5 with screw 6 is fixed on the bottom of seat cushion 1 again, just finishes whole windings.

Consult Fig. 4, when use launched, main foot rest 2 was that central pivot point is " X " shape with time foot rest 3 with activity clencher 22, and its start point is with link span 4 restrictions, and seat cushion 1 horizontal that makes its apical support is with firm.When folding, seat cushion 1 is up dug gently by an end of close time foot rest 3,1 of seat cushion is the fulcrum upset with the closing end bar 23 of main foot rest 2 and the link span 4 of time foot rest 3, as shown in phantom in FIG., form seat cushion 1, pivot connecting plate 5, hitch 4, inferior foot rest 3 and main foot rest 2 straight collapse states, be convenient to reduce in seasoning or the transportation taking up room.

Claims

1, the folding mechanism of a kind of chair, comprise the intermediate active riveted joint of main foot rest with the inferior foot rest of " H " type of " being down U ", the top and the movable riveted joint of the link span that is " U " type that it is characterized in that this time foot rest, two isometric pivot connecting plates are provided with main groove, inferior groove and most perforation, the closing end bar on this main foot rest top is movable to embed in this main groove, the link span on this time foot rest top is movable to embed in this time groove, the perforation that screw passes on this pivot connecting plate is fixed on the bottom of seat cushion with this pivot connecting plate, and seat cushion and foot rest are articulated.