Folding chair structure with no cross bars

Abstract

The invention discloses a folding chair structure with no cross bars, which comprises a first inverse-U shape piece as a front leg mechanism, a second inverse-U shape piece as a back leg mechanism, as well as a chair board, wherein the top of the second inverse-U shape piece is pivoted with a front connector and is fixed in the forepart of the chair board through the front connector; the middle or upper middle parts of two front legs of the first inverse-U shape piece are pivoted with a back connector respectively; two back connectors are in sliding connection with two side edges of the chair board respectively in order to ensure that the chair board can turn over and change position around the two front legs when sliding relative to the back connectors; and the middle parts of two back legs of the second inverse-U shape piece are correspondingly pivoted with the lower middle parts of the two front legs of the first inverse-U shape piece in order to ensure that no cross bars need to be connected between the two front legs and the two back legs. The structure has the advantages of ensuring the stable support of chair legs in the folding chair structure for the chair board, realizing due application effect, reducing material consumption, saving processing procedures and reducing the production cost of folding chairs, thereby improving the competitiveness of the folding chair structure on the market.

Description

technical field [0001] The invention relates to a folding chair, in particular to a folding chair structure without a cross bar. Background technique [0002] Chairs are one of the most commonly used furniture daily necessities in our daily life, in the family room, or in the office of the unit, or in various public places such as theaters, libraries, conference halls, train / car waiting rooms, etc. In the world, people can see the shadow of using it, and it is closely related to people's lives. There are many kinds of chairs. In terms of structure, there are fixed chairs, folding chairs, lift chairs, etc.; Chairs, conference chairs suitable for meetings, special chairs for theaters, train / car waiting rooms, etc. [0003] Folding chair is a kind of chair. Because of its foldable feature, it can be used as a chair when it is opened. When it is folded, the volume of the chair becomes smaller, which is easy to carry and store. Therefore, it is widely used in various occasions....

AI Technical Summary

Problems solved by technology

[0003] Folding chair is a kind of chair. Because of its foldable feature, it can be used as a chair when it is opened. When it is folded, the volume of the chair becomes smaller, which is easy to carry and store. Therefore, it is widely used in various occasions. This folding chair of the prior art usually comprises two front legs, two rear legs, a chair board, a backrest board, and the about middle position of two front legs or the upper part of the middle part are respectively connected with the opposite sides of the chair board. The middle and rear parts of the edge are pivotally connected, so that the chair board can be turned around the pivot point with the front legs, and the tops of the rear legs are pivotally connected with the middle and upper parts of the front legs to form a herringbone-shaped structure that can be stretched out. Among them, the rear legs The pivotal position with the front leg is higher than the pivotal position between the front leg and the chair board, and the rear leg and the chair board are pivotally connected through a connecting piece, so that the chair board can also be turned over relative to the rear leg. The connecting piece is usually There is also a positioning structure so that the chair board will not turn over when it is in use, and the back board is usually fixed between the tops of the two front legs. The chair with this structure, when the chair is stretched and used, Affected by the pressure generated by the user sitting on the chair board, the two front legs and the two rear legs are very easy to move to the two sides, resulting in the instability of the chair legs. A crossbar is installed between the rear legs. When connecting, the two crossbars are usually welded between the two front legs and the two rear legs respectively. The folding chair with this structure needs to use the crossbar, which is both More materials are used, and the welding process is added, which makes the production cost of the folding chair higher and affects the competitiveness of the folding chair in the market

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