JPS5944365U

JPS5944365U - Anteroposterior tilt angle adjustment device for the seat in a chair

Info

Publication number: JPS5944365U
Application number: JP13933782U
Authority: JP
Inventors: 山口　公樹
Original assignee: 株式会社岡村製作所
Priority date: 1982-09-14
Filing date: 1982-09-14
Publication date: 1984-03-23

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本考案装置を使用した椅子の側面図、第２図
は、麦藁の拡大平面図、第３図は、第２図におけるＡ−
Ａ線矢親図、第４図は、第２図におけるＢ−Ｂ線断面図
、第５図は、第２図におけるＣ−Ｃ線断面図である。１・・・脚、２・・・脚柱、３・・・脚杆、４・・・麦
藁、４ａ・・・側片、４ｂ・・・補強片、４ｃ・・・底
片、５・・・座席、６・・・取付金具、７・・・背杆、
曳、８・・・背もたれ、９・・・取付板、１０．１１・
・・取付孔、１２・・・枢軸、１３・・・取付板、１３
ａ・・・垂下片、１４・・・捩りばね、１５・・・調節
金具、１５ａ・・・側片、１６・・・係合孔、１７・・
・連絡孔、１８・・・調節孔、１９・・・軸受片、２０
・・・操作杆、２０ａ・・・基部、２１・・・環状溝、
２２・・・ストッパ、２３・・・圧縮ばね。Fig. 1 is a side view of a chair using the device of the present invention, Fig. 2 is an enlarged plan view of wheat straw, and Fig. 3 is A--A in Fig. 2.
4 is a sectional view taken along the line B--B in FIG. 2, and FIG. 5 is a sectional view taken along the line C--C in FIG. 2. 1... Leg, 2... Pillar, 3... Leg rod, 4... Straw, 4a... Side piece, 4b... Reinforcement piece, 4c... Bottom piece, 5... Seat, 6...Mounting bracket, 7...Backrest,
Pull, 8...Backrest, 9...Mounting plate, 10.11.
...Mounting hole, 12...Pivot, 13...Mounting plate, 13
a... Hanging piece, 14... Torsion spring, 15... Adjustment fitting, 15a... Side piece, 16... Engagement hole, 17...
・Communication hole, 18... Adjustment hole, 19... Bearing piece, 20
... Operating rod, 20a... Base, 21... Annular groove,
22...stopper, 23...compression spring.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

脚杆の上端に設けた麦藁の前部に、座席の下面前部を左
右方向軸まわりに揺動自在に枢着するとともに、ばねを
もって座席の後部が、前上方に向うように付勢し、かつ
座席の下面後部に垂設した゛調節金具に、互に近接して
上記枢着部を中心とする円弧上に並ぶ複数の保合孔を穿
設し、各係合孔を、その径より小幅の、円弧上に並ぶ連
絡孔をもって連通し、さらに、麦藁の上面後部に、基部
が保合孔を貫通して係合する操作杆を、側方移動自在に
設け、基部の要所に、相対的に操作杆が連ｉ孔を上記円
弧方向に通過しうるように環状溝を切設し、常時は、基
部か係合孔に係合するように、ばねをもって操作杆を付
勢してなる椅子における′　　座席の前後傾斜角度調節
装置。The front part of the lower surface of the seat is pivoted to the front part of the straw provided at the upper end of the leg rod so as to be able to swing freely around an axis in the left and right direction, and the rear part of the seat is biased forward and upward by a spring, In addition, a plurality of retaining holes arranged in a circular arc centering on the pivot joint are formed in close proximity to each other in the adjustment fitting installed vertically at the rear of the lower surface of the seat, and each engaging hole is They communicate with each other through communication holes arranged in a circular arc with a small width, and furthermore, an operating rod is provided at the rear of the upper surface of the straw, the base of which penetrates through the retaining hole and engages with it, so that it can be moved laterally, and at key points of the base, An annular groove is cut so that the operating rod can relatively pass through the continuous I-hole in the circular arc direction, and the operating rod is normally biased with a spring so that it engages with the base or the engagement hole. A device for adjusting the forward and backward inclination angle of the seat in a chair.