JPS6420828U

JPS6420828U -

Info

Publication number: JPS6420828U
Application number: JP11380187U
Authority: JP
Priority date: 1987-07-27
Filing date: 1987-07-27
Publication date: 1989-02-01
Also published as: JPH033318Y2

Description

[Brief explanation of the drawing]

図面は本考案の一実施例を示すもので、第１図
は全体の透視側面図、第２図は前垂れの透視正面
図、第３図は前垂れの横断面図、第４図〜第６図
は前垂れ傾動機構の動作過程を示す側面図、第７
図は前垂れの伸長状態の透視正面図である。１……油圧シリンダ、２……ラム、３……昇降
基枠、４……ガイドローラ、５……座部基板、６
……前垂れ、７……リンク杆、８……扇形リンク
、９……Ｌ形リンク、１０……連杆、１２……ガ
イド杆、１３……支枠、１４……基台、１５……
シート基板、１６……アーム、１７……チエーン
、１８……スプロケツト、１９……ブラケツト、
２０……連結杆、２１，２２……支点、２５……
シート、２６……ローラ、２７，２８……引張り
バネ、２９……基板ガイド、３０……ブラケツト
、３１……引張りバネ、３２……停止ピン、３３
……ブラケツト、３４……支杆、Ａ，Ｂ，Ｃ，Ｄ
，Ｅ，Ｆ，Ｇ……支点、Ｈ……ガイドピン、Ｉ，
Ｋ……支点、Ｌ……支軸、Ｍ……支点。 The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective side view of the whole, Fig. 2 is a perspective front view of the apron, Fig. 3 is a cross-sectional view of the apron, and Figs. 4 to 6. 7 is a side view showing the operation process of the front hanging tilting mechanism.
The figure is a perspective front view of the front flap in an extended state. DESCRIPTION OF SYMBOLS 1...Hydraulic cylinder, 2...Ram, 3...Elevating base frame, 4...Guide roller, 5...Seat base plate, 6
... front hanging, 7 ... link rod, 8 ... fan-shaped link, 9 ... L-shaped link, 10 ... continuous rod, 12 ... guide rod, 13 ... support frame, 14 ... base, 15 ...
Sheet board, 16... Arm, 17... Chain, 18... Sprocket, 19... Bracket,
20... Connecting rod, 21, 22... Fulcrum, 25...
Seat, 26... Roller, 27, 28... Tension spring, 29... Board guide, 30... Bracket, 31... Tension spring, 32... Stop pin, 33
... Bracket, 34 ... Support rod, A, B, C, D
, E, F, G... fulcrum, H... guide pin, I,
K... fulcrum, L... fulcrum, M... fulcrum.

Claims

[Scope of utility model registration request]

a front sag that is pivotally connected to the front end of the seat base plate and whose front lower end is raised and lowered by a front sag undulation means; a seat base that is extendably and contractably supported with respect to the front sag;
A chain having one end attached to the seat base plate and the other end attached to a connecting rod via a sprocket supported by the front sag, a crossing portion at one end being attached to the connecting rod, and a crossing portion at the other end being attached to the connecting rod. a plurality of intersecting links attached to the sheet substrate and having an intermediate intersecting portion attached to the front sag; a sheet attached to the front end of the sheet substrate and the other end biased in the retraction direction by a biasing member; 1. A dental chair comprising: a roller attached to a front end of a sheet substrate and in contact with an inner surface of the sheet.