JPS5940666U

JPS5940666U - door opening/closing device

Info

Publication number: JPS5940666U
Application number: JP13706182U
Authority: JP
Inventors: 一近藤
Original assignee: 株式会社ナブコ
Priority date: 1982-09-08
Filing date: 1982-09-08
Publication date: 1984-03-15
Also published as: JPH0249342Y2

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 the drawing]

第１図は、本考案の一実施例を示す、配管接続を含む断
面図であり、第２図は第１図の弁装置の部分拡大図であ
る。１・・・圧力リザーバ（圧力源）、３・・・手動切換弁
、７・・・弁装置、１１・・・複動シリンダ、１９・・
・電磁弁、２０・・・切換弁、２１・・・流量制限弁、
２２・・・四方切換弁、５１・・・弁孔、５２・・・第
１の出力孔、５３・・・第２の出力孔、５４・・・入力
孔、５５・・・弁体、５６・・・連通路、６１・・・第
１の弁座、６２・・・シート面、６３・・・絞り部材、
６４・・・第２の弁座、６５・・・シー下面、６６・・
・絞り通路、６７・・・弁ばね、６８・・・予負荷ばね
。FIG. 1 is a sectional view including piping connections, showing an embodiment of the present invention, and FIG. 2 is a partially enlarged view of the valve device shown in FIG. 1. DESCRIPTION OF SYMBOLS 1... Pressure reservoir (pressure source), 3... Manual switching valve, 7... Valve device, 11... Double acting cylinder, 19...
・Solenoid valve, 20... switching valve, 21... flow rate limiting valve,
22... Four-way switching valve, 51... Valve hole, 52... First output hole, 53... Second output hole, 54... Input hole, 55... Valve body, 56 ...Communication path, 61...First valve seat, 62...Seat surface, 63...Aperture member,
64...Second valve seat, 65...Sea bottom surface, 66...
- Throttle passage, 67... Valve spring, 68... Preload spring.

Claims

[Scope of utility model registration request]

A four-way switching valve for opening and closing the door that can alternately switch the supply and discharge of pressure fluid to each chamber of the double-acting cylinder that opens and closes the door, and controls the supply of pressure fluid from the pressure source to the four-way switching valve. It is interposed between the manual switching valve for the pressure source, and when the manual switching valve is switched from the exhaust position to the air supply position, the pressure on the four-way switching valve side remains unchanged until the pressure on the four-way switching valve side reaches a predetermined value. In a flow rate limiting valve for a door opening/closing device that limits the supply speed of pressure fluid and allows the free supply of pressure fluid to the four-way switching valve when the supply speed exceeds the predetermined value, the flow rate limiting valve is provided within the valve body, A first and a second valve are connected to the manual switching valve through an input hole.
a valve hole that communicates with the four-way switching valve through an output hole; a valve hole that is slidably inserted into the valve hole;
a valve body having a communication passage formed in the internal axial direction to connect with the output hole of the valve body; a sheet surface that can be cut off between the first output hole and the first output hole;
a preload spring that urges the valve body in the direction of seating on the valve seat; A flow rate limiting valve for a door opening/closing device, comprising an output hole and a throttle member that narrows a passage.