JPH0385778U

JPH0385778U -

Info

Publication number: JPH0385778U
Application number: JP14469489U
Authority: JP
Priority date: 1989-12-14
Filing date: 1989-12-14
Publication date: 1991-08-29

Description

[Brief explanation of drawings]

第１図は本考案による第１実施例の縦断面構成
図、第２図は本考案による第２実施例の縦断面構
成図、第３図は従来の三方向切換電磁弁の概略構
成図で、イはオフ形電磁弁、ロはオン形電磁弁を
示すものである。第４図は従来の電磁弁、残圧弁
が使用されるブレーキ制御の説明図で、イは回路
構成図、ロは制御指令及びその指令時のブレーキ
圧力のパターン図である。５……電磁コイル、１２，１３……戻しバネ、
６……可動鉄心、７……弁棒、８……供給口、１
４……供給室、３……供給弁、排気弁、１５……
出力室、９……出力口、２……供給弁座、４…排
気弁座、１６……残圧弁座、１７……残圧弁、１
８……残圧弁バネ。 FIG. 1 is a vertical cross-sectional configuration diagram of a first embodiment of the present invention, FIG. 2 is a vertical cross-sectional configuration diagram of a second embodiment of the present invention, and FIG. 3 is a schematic diagram of a conventional three-way switching solenoid valve. , A indicates an off-type solenoid valve, and B indicates an on-type solenoid valve. FIG. 4 is an explanatory diagram of brake control using a conventional electromagnetic valve and residual pressure valve, in which A is a circuit configuration diagram and B is a control command and a pattern diagram of brake pressure at the time of the command. 5... Electromagnetic coil, 12, 13... Return spring,
6...Movable iron core, 7...Valve stem, 8...Supply port, 1
4... Supply chamber, 3... Supply valve, exhaust valve, 15...
Output chamber, 9... Output port, 2... Supply valve seat, 4... Exhaust valve seat, 16... Residual pressure valve seat, 17... Residual pressure valve, 1
8...Residual pressure valve spring.

Claims

[Scope of utility model registration request]

An electromagnetic coil, a movable core that moves against the force of a return spring due to excitation of the electromagnetic coil, a valve rod fixed to the movable core, a supply chamber into which pressurized air is input from a supply port, and a supply described later from the supply chamber. When the valve is open, pressurized air is input and outputted to the output port, and when the exhaust valve (described later) is opened, air from the load equipment is discharged to the outside through the exhaust port, an output chamber, the supply chamber and the output. A supply valve seat provided between the output chamber and the outside, a supply valve provided opposite the supply valve seat, an exhaust valve seat provided between the output chamber and the outside, and an exhaust valve seat provided opposite the exhaust valve seat. an exhaust valve provided, the valve stem is moved by excitation or demagnetization of the electromagnetic coil to act on the supply valve and the exhaust valve, and is attached to and detached from the supply valve seat or the exhaust valve seat, respectively; A three-way switching solenoid valve that alternately switches between a state in which the supply valve is open and the exhaust valve is closed, and a state in which the supply valve is closed and the exhaust valve is open; A solenoid valve with a residual pressure valve for a railway vehicle, characterized in that a residual pressure valve seat is provided on the side, and a residual pressure valve part is added to the residual pressure valve seat to press the residual pressure valve at a predetermined pressure by a residual pressure valve spring.