JPS61207255U

JPS61207255U -

Info

Publication number: JPS61207255U
Application number: JP9193785U
Authority: JP
Priority date: 1985-06-18
Filing date: 1985-06-18
Publication date: 1986-12-27

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示し、第１図は椅子の
側面図、第２図は要部の平面図、第３図は第２図
の―線視側断面図、第４図は別の実施例を示
す要部平面図、第５図は第４図の―線視側断
面図、第６図は中立状態の側面図、第７図は前傾
状態の側面図、第８図は後傾状態の側面図である
。１……椅子、２……支柱、３……固定枠、４，
４……左右両側板、５……水平軸、６……座受体
、７，７……左右両側板、８……背もたれ、９…
…支持杆、１１……ピン枢支部、１２……リンク
、１３……連結軸、１４……伸縮付勢手段、１６
……軸、１８……シリンダ、１９……ピストンロ
ツド、２０……プツシユバルブ、２１……支軸、
１５，２３……操作レバー、２２……ブラケツト
、２４……枢軸、１７，２５……押圧片。 The drawings show an embodiment of the present invention; Fig. 1 is a side view of the chair, Fig. 2 is a plan view of the main parts, Fig. 3 is a side cross-sectional view taken from Fig. 2, and Fig. 4 is a different one. 5 is a side sectional view taken along the line - of FIG. 4, FIG. 6 is a side view in a neutral state, FIG. 7 is a side view in a forward leaning state, and FIG. 8 is a rear view. It is a side view of a tilted state. 1...chair, 2...post, 3...fixed frame, 4,
4... Left and right side plates, 5... Horizontal axis, 6... Seat support, 7, 7... Left and right side plates, 8... Backrest, 9...
...Support rod, 11...Pin pivot, 12...Link, 13...Connection shaft, 14...Extensible biasing means, 16
... shaft, 18 ... cylinder, 19 ... piston rod, 20 ... push valve, 21 ... support shaft,
15, 23... Operating lever, 22... Bracket, 24... Pivot, 17, 25... Pressing piece.

Claims

[Scope of utility model registration request]

A fixed frame attached to the upper end of a chair support and a seat support placed on the fixed frame are pivoted about a horizontal axis at a position forward of the support, and the rear end of the seat support and the backrest are attached. The support rod is rotatably connected to the support rod by a support shaft, and one end of the link is connected to a pin pivot portion of a fixed frame at a position midway in the longitudinal direction between the horizontal shaft and the support shaft when viewed from the side of the chair, and the link is extended rearward and downward. The other end of the link is rotatably connected to the lower end of the support rod at a position below the support shaft by a connecting shaft, and an extendable and retractable adjustable link is installed between the connecting shaft and the fixed frame. A tilting device for a chair, wherein a telescopic biasing means is disposed in the front-rear direction below the link in a side view of the chair.