JPS5951969U

JPS5951969U - Door closing device for sliding doors

Info

Publication number: JPS5951969U
Application number: JP14953982U
Authority: JP
Inventors: 植村　謹一
Original assignee: Daihatsu Diesel Manufacturing Co Ltd
Current assignee: Daihatsu Infinearth Mfg Co Ltd
Priority date: 1982-09-30
Filing date: 1982-09-30
Publication date: 1984-04-05
Also published as: JPH0245415Y2

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図はこの考案に係る戸閉装置を備えた引戸の全体図
、第２図は引戸の開閉動作行程を示す図面、第３図は速
度制御用シリンダの全閉時の断面図、第４図は第３図の
ＩＶ−ＩＶ線断面図、第５図は全開時のシリンダの断面
図、第６図はディレイド区間直後で高速区間のシリンダ
の断面図、第７図は高速区間直後で緩衝区間に入った時
のシリンダの断面図、第８図はこの考案の変形例の開閉
動作行程を示す図面、第９図はウェイトで戸閉力を確保
する変形例を示す図面である。１・・・引戸、５・・・戸閉装置、６・・・速度制御用
シリンダ、ブ・・・引張りバネ、８・・・ロッド、１２
・・・内部シリンダチューブ、１３・・・外部シリンダ
チューブ、１４・・・ピストン、１５．１６・・・側孔
、１７．１Ｂ。２２、２３・・・通路、１９．２４・・・流量絞り弁、
２１、　２６．　２９・・・逆止球弁。１９　　　Ｔ　　　　　６一／　　　　　　　　　　　　　　　　　　／Ａ／／８第５図補正　昭５７．１１．１２実用新案登録請求の範囲を次のように補正する。Ｏ実用新案登録請求の範囲バネ、ウェイト等を引戸に取付けた金具に連結して引戸
を閉側に付勢して戸閉力を確保する戸閉装置において、
ピストン嵌合した内部シリンダチューブと該内部シリン
ダチューブに囲繞した外部シリンダチューブとよりなる
二重構造の速度制御用の油圧シリンダを設け、上記ピス
トンに連結したロンドを上記引戸に金具を介して連結す
る一方、上記ピストンで仕切られた内部シリンダチュー
ブ内の左右の室の、内部シリンダチューブと外部シリン
ダチューブとの間の室とをシリンダ両側の弁体部に設け
た流量絞り弁を介設した通路を介して連通ずると共に、
内部シリンダチューブの周壁に設けた側孔を介して連通
し、戸閉動作区間の全開位置から全閉位置にかけて、上
記流量絞り弁のみを通して油が流通するディレイド区間
と、上記側孔を介して流通する高速区間と上記流量絞り
弁の　′みを通して流通する緩衝区間に分けて動作する
構成としたことを特徴とする引戸用戸閉装置。Fig. 1 is an overall view of a sliding door equipped with a door closing device according to this invention, Fig. 2 is a drawing showing the opening/closing operation process of the sliding door, Fig. 3 is a sectional view of the speed control cylinder when it is fully closed, and Fig. 4 The figure is a cross-sectional view taken along the line IV-IV in Figure 3, Figure 5 is a cross-sectional view of the cylinder when fully open, Figure 6 is a cross-sectional view of the cylinder in the high-speed section immediately after the delayed section, and Figure 7 is the buffered cylinder immediately after the high-speed section. FIG. 8 is a cross-sectional view of the cylinder when it enters the section, FIG. 8 is a drawing showing the opening/closing operation process of a modified example of this invention, and FIG. 9 is a drawing showing a modified example in which the door closing force is secured by a weight. DESCRIPTION OF SYMBOLS 1... Sliding door, 5... Door closing device, 6... Speed control cylinder, B... Tension spring, 8... Rod, 12
...Inner cylinder tube, 13...Outer cylinder tube, 14...Piston, 15.16...Side hole, 17.1B. 22, 23...Passage, 19.24...Flow rate restrictor valve,
21, 26. 29...Check ball valve. 19 T 6 1/ /A// 8 Amendment to Figure 5 November 12, 1982 The scope of the claims for utility model registration is amended as follows. O Scope of Claim for Utility Model Registration A door closing device that secures door closing force by connecting a spring, weight, etc. to a metal fitting attached to a sliding door to bias the sliding door toward the closing side,
A hydraulic cylinder for speed control is provided with a double structure consisting of an internal cylinder tube fitted with a piston and an external cylinder tube surrounded by the internal cylinder tube, and a rond connected to the piston is connected to the sliding door via a metal fitting. On the other hand, the left and right chambers in the internal cylinder tube partitioned by the piston, and the chamber between the internal cylinder tube and the external cylinder tube, are connected to a passage with a flow rate restricting valve provided in the valve bodies on both sides of the cylinder. While communicating through
It communicates through a side hole provided in the peripheral wall of the internal cylinder tube, and from the fully open position to the fully closed position of the door closing operation section, oil flows through the delayed section where oil flows only through the flow rate restrictor, and through the side hole. A door closing device for a sliding door, characterized in that the door closing device for a sliding door is configured to operate separately into a high speed section where the flow is carried out and a buffer section where the flow is carried out through the opening of the flow restricting valve.

Claims

[Scope of utility model registration request]

In a door closing device that connects a spring, weight, etc. to a metal fitting attached to a sliding door to bias the sliding door toward the closing side and ensure door closing force,
A hydraulic cylinder for speed control is provided with a dual structure consisting of an inner cylinder tube into which a piston is fitted and an outer cylinder tube surrounded by the inner cylinder tube, and a rod connected to the piston is connected to the sliding door via a metal fitting. On the other hand, the left and right chambers in the inner cylinder tube partitioned by the piston and the chamber between the inner cylinder tube and the outer cylinder tube are interposed with flow rate restricting valves provided in the valve bodies on both sides of the cylinder. A delayed section in which oil flows only through the flow rate restricting valve from a fully open position to a fully closed position when the door is closed, communicating through a passageway and through a side hole provided in the peripheral wall of the internal cylinder tube; A door closing device for a sliding door, characterized in that the door closing device for a sliding door is configured to operate divided into a high speed section where the flow flows through the side hole and a buffer section where the flow flows only through the flow restrictor.