ES239214U - Folding chair structure of extended rigid elements (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Folding chair structure of rigid elongated elements, which are inter-articulated and folded in the form of a compact beam; whose chair frame comprises a lower x-frame extending in a plane of said chair frame directed from back to front, in which the x-frame is folded flat; an equal pair of side frames extending in vertical planes, each of said side frames being hingedly interconnected with one. Respective front corner and another respective rear corner of the lower x-frame to rotate and fold said corners in a backward direction :, each of said lateral frames comprising a backrest element of the chair extending upwards from a respective one the back corner of the lower x-frame being said seat backrest element of said side frames in the same plane as the backrest of the other side frame; a pair of inter-articulated reinforcing elements that are inclined upwards and backwards between the respective front corner of the lower x-frame and the upper end of the respective backrest element of the chair, this pair of reinforcing elements comprising one lower and one upper which are interconnected by a first rotary connection, there being a second rotary connection between the lower element and the respective front corner of the lower frame in x and a third rotary connection between the upper element and the upper end of the respective backrest element of the chair, the side frame further comprising a seat support member extending between the respective rear corner of the lower x-frame, to the rear corner of which the seat support element is hingedly connected, and the lower reinforcing element to which the seat is connected. Seat support element, through a rotating connection oria located between the first and second rotary connections, thus ensuring the support element of the seat of each side frame a simultaneity in the folding of each side frame and the lower frame in x, also comprising the frame of the chair on its back a pair of locking stringers interconnected by a pivot and hingedly connected at opposite ends to the rear corners of the lower x-frame, supporting the pair of stringers, when locked in extended position to the chair frame in extended condition; and an equal pair of oblique beams to reinforce the frame of the chair in a side-to-side direction, these oblique beams having an interconnection around which they rotate relative to each other; and being arranged for deployment in order to provide an x-shaped reinforcing frame extending between the backrest element of the chair in each side frame, the oblique beams having lower ends hingedly connected to the back of the frame of the chair. Chair in the back corners of the. Lower frame in x-1. Also commandend upper ends hingedly connected indirectly to the elements of the backrest of the chair, the interconnection between the oblique beams being placed in fixed position in relation to the rear corners of the lower x-frame when the pair of blocking beams is locked in position extended, the oblique stringers being thus inclined in opposite directions between it and obliquely to each backrest element of the chair; characterized in that the reinforcing frame formed by deploying the oblique beams has the shape of an already known x, or of x truncated in the form of an inverted y, and the interconnection between the oblique beams establishes a connection comprising a pair of bars, each of which is held on a respective first pivot at one end thereof at a fixed point on a respective backrest element of the chair whose fixed point is away from the respective rear corner of the lower x-frame, each said bar being connected, far from the first pivot of the same, indirectly to the interconnection between the oblique stringers. (Machine-translation by Google Translate, not legally binding)