Folding chair

Abstract

The invention relates to a folding chair, which comprises a coplanar rigid hinging device, a parallel planar rigid hinging device, a crossed planar rigid hinging device, various horizontal hinging pipes, various oblique crossing pipes, an upper hinging support, a lower hinging support or a lower hinging sliding sleeve support, leg pipes, armrest pipes, a back pipe, elastic ropes, a rotating rod, atwo-dimensional rotating hinge and the like, and each type of plane rigid hinging device is correspondingly arranged on each type of horizontal hinging pipe. When the folding chair is unfolded, the horizontal hinge pipes can fall into or be wedged into the corresponding coplanar rigid hinge devices, the parallel planar rigid hinge devices and the crossed planar rigid hinge devices to be oppositely clamped into the groove-shaped openings, so that the horizontal hinge pipes are firmly clamped, complete rigid hinge of two or more groups of composite crossed folding chairs is realized, and the armrest pipes and the back pipe are connected through the elastic ropes and can be easily and conveniently inserted and pulled out, so that the packaging volume of the folding chair is reduced, the logistics cost is reduced, and the folding chair is more convenient to carry.

Description

technical field [0001] The invention relates to furniture products, including outdoor travel and leisure folding products such as folding chairs, folding beds, and folding pergolas, especially composite cross-type folding chairs. Background technique [0002] In the existing folding chairs of tourism and leisure folding products, the folding and unfolding in the three-dimensional direction are carried out by means of cross hinges, all of which adopt a single cross hinge structure. The folding chair with a single cross hinge structure has better hinge rigidity. However, the height of folded folding chairs is relatively high, generally at least 850mm or more, the packaging volume is still relatively large, and the cost of Internet sales is relatively high; folding chairs with double-group or more composite cross-hinged structures are rarely seen, although theoretically The height can be folded to be shorter, but the hinge rigidity of this composite cross hinge structure is ver...

AI Technical Summary

Problems solved by technology

[0002] In the existing folding chairs of tourism and leisure folding products, the folding and unfolding in the three-dimensional direction are carried out by means of cross hinges, all of which adopt a single cross hinge structure. The folding chair with a single cross hinge structure has better hinge rigidity. However, the height of folded folding chairs is relatively high, generally at least 850mm or more, the packaging volume is still relatively large, and the cost of Internet sales is relatively high; folding chairs with double-group or more composite cross-hinged structures are rarely seen, although theoretically The height can be folded to be shorter, but the hinge rigidity of this composite cross hinge structure is very poor. This is because the general composite cross hinge structure is a symmetrical hinge with a relatively large angle, and the composite cross pipes are in point contact. In the same rotatable surface, plus the gap of the hinge hole, the hinge rigidity of the general symmetrical compound cross hinge structure is very poor, which cannot be simply applied to folding products; due to the special structural shape of the folding chair, except for a single cross In addition to the hinged structure, the armrest tube and the back tube have a great influence on the packing volume of the folding chair, especially the height after folding

Images