Backrest chair

一种靠背椅

Abstract

一种靠背椅,椅架包括有支脚架及连接其上的座杆和靠背杆,支脚架包括位于侧面的侧支架及位于前后立面的交叉支杆组,侧支架包括一向后斜立支撑的前支脚及一交叉支撑在前支脚上部的后支脚;靠背杆枢接在后支脚上,座杆与前支脚枢接后其后端再与靠背杆的下端枢接在后支脚上,两后支脚之间两呈交叉的支杆的下端分别连接在后支脚上,上端则连接在靠背杆上;后支脚形成伸缩套管,位于上方的外套管在其下端部通过一定位滑块活动定位至位于下方的内套管上,内套管上设有可令定位滑块定位的定位孔,后立面的交叉支杆组中,支杆的下端连接在后支脚上。本实用新型可收折,椅背与椅座之间的仰角可进行调节,坐靠更舒适。
The utility model discloses a backrest chair. A seat frame comprises a supporting leg rack, and a seat rod and a backrest rod connected to the supporting leg rack, wherein the supporting leg rack comprises a side bracket positioned on a side face and a cross supporting rod group positioned on the front and rear vertical faces; the side racket comprises front supporting legs which are backwards obliquely supported and rear supporting legs supported on the upper part of the front supporting legs in a cross mode; the backrest rod is pivoted to the rear supporting legs; after the seat rod is pivoted with the front supporting legs, the rear end of the seat rod and the lower end of the backrest rod are pivoted to the rear supporting legs; the lower ends of two cross supporting rods between the rear supporting legs are respectively connected to the rear supporting legs, and the upper ends of the two cross supporting rods are connected to the backrest rod; the rear supporting legs form a telescopic sleeve; an outer sleeve positioned on the upper side is movably positioned on an inner sleeve positioned on the lower side through a positioning slide block at the lower end of the outer sleeve; a positioning hole through which the positioning slide block can be positioned is formed in the inner sleeve; the lower ends of the supporting rods are connected to the rear supporting legs in the cross supporting rod group on the rear vertical face. The backrest chair can be folded, an elevation angle between the chair back and the seat can be adjusted, and the backrest chair is comfortable to sit.

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