JPH0475074U

JPH0475074U -

Info

Publication number: JPH0475074U
Application number: JP11897690U
Authority: JP
Priority date: 1990-11-14
Filing date: 1990-11-14
Publication date: 1992-06-30

Description

[Brief explanation of the drawing]

第１図ａは本考案の実施例の模式的な正面図、
第１図ｂは第１図ａの要部の拡大詳細図、第１図
ｃは第１図ｂの矢印Ｃ−Ｃ′部の断面図、第２図
はワンウエイダンパの断面図、第３図はワンウエ
イダンパのダンパ特性図、第４図は従来例の正面
図である。８……装置本体、９……下部機体、１０……ヒ
ンジ、１１……上部機体、１２……第１固定歯車
、１２ａ……歯部、１３……第２固定歯車、１３
ａ……歯部、１３ｂ……ニゲ部、１４……第１可
動歯車、１５……第２可動歯車、ｒ_１，ｒ_２，ｒ
_３，ｒ_４……ピツチ円半径、１７……ワンウエイ
ダンパ、Ｐ……重心、Ｆ……閉駆動力、Ｗ……重
量、θ……角度、Ｌ……距離。 FIG. 1a is a schematic front view of an embodiment of the present invention;
Fig. 1b is an enlarged detailed view of the main part of Fig. 1a, Fig. 1c is a sectional view taken along arrow C-C' in Fig. 1b, Fig. 2 is a sectional view of the one-way damper, and Fig. 3 4 is a damper characteristic diagram of a one-way damper, and FIG. 4 is a front view of a conventional example. 8... Apparatus body, 9... Lower body, 10... Hinge, 11... Upper body, 12... First fixed gear, 12a... Teeth, 13... Second fixed gear, 13
a...Tooth part, 13b...Negated part, 14...First movable gear, 15...Second movable gear, _r1 , _r2 , r
₃ , r ₄ ... Pitch circle radius, 17... One-way damper, P... Center of gravity, F... Closing driving force, W... Weight, θ... Angle, L... Distance.

Claims

[Claims for Utility Model Registration] A second body capable of opening and closing operations using one end as a fulcrum relative to the first body; a first gear fixed to one of the bodies with its axis aligned with the fulcrum; A rotating force that is attached to the other body of the body so as to be rotatable about the fulcrum and rotates while meshing with the first gear, and when the first body and the second body perform a closing operation. and a second gear braked by a damper, wherein the first gear coaxially includes a plurality of gears with different pitch circles, and the second gear has a second gear that is braked by a damper. It has a plurality of gears with different pitch circles coaxially meshing with gears having different pitch circles, and when the closing operation of the first body and the second body starts, the first gear and An opening/closing mechanism characterized in that the gear ratio with the second gear is the smallest, and the gear ratio is the largest at the end of the closing operation.