JPS5968803U

JPS5968803U - logic switching circuit

Info

Publication number: JPS5968803U
Application number: JP16499582U
Authority: JP
Inventors: 健二増田
Original assignee: ダイキン工業株式会社
Priority date: 1982-10-29
Filing date: 1982-10-29
Publication date: 1984-05-10
Also published as: JPH0112006Y2

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図は本考案の実施例を示す概略説明図、第２図は主
弁及びパイロット電磁弁の実施例を示す断面図、第３図
は作動説明図、第４図は第３及び第４主弁の別の実施例
を示す概略説明図、第５図は従来例を示す概略説明図で
ある。１〜４・・・第１乃至第４主弁、１１〜１４・・・パイ
ロット弁、２１・・・パイロット通路、２′２・・・絞
り通路、Ｐ・・・ポンプポート、Ｔ・・・タンクポート
、Ｘ。Ｙ・・・負荷ポート、Ａ・・・正方主ポート、Ｂ・・・
側方主ポート、Ｆ・・・背方パイロットポート。Fig. 1 is a schematic explanatory diagram showing an embodiment of the present invention, Fig. 2 is a sectional view showing an embodiment of the main valve and pilot solenoid valve, Fig. 3 is an explanatory diagram of operation, and Fig. 4 is a diagram showing the third and fourth solenoid valves. FIG. 5 is a schematic explanatory diagram showing another embodiment of the main valve, and FIG. 5 is a schematic explanatory diagram showing a conventional example. 1-4... 1st to 4th main valve, 11-14... Pilot valve, 21... Pilot passage, 2'2... Restriction passage, P... Pump port, T... Tank port, X. Y...load port, A...square main port, B...
Side main port, F... Rear pilot port.

Claims

[Claims for Utility Model Registration] Pump port P1 tank port T and two load ports 1
-X, Y, and these respective ports P, T. Four first to fourth seat type main valves 1 to 4 each having a square main port A, a side main port B, and a rear pilot port F are connected to X and Y, and each of these main valves 1 to 4 is connected to A logic switching circuit is constructed in which seat type pilot valves' 11 to 14 are respectively connected to 4 and can be switched in 4 directions, and a check valve 30 is provided at the pump port P to prevent flow to the pump side. The side main ports B of the first and second main valves 1 and 2 are connected to the pump port P,
Further, the square main ports A of the third and fourth main valves 3 and 4 are connected to the tank port T, respectively, and the first
and the square main ports A of the second main valves 1 and 2 and the side main ports B of the third and fourth main valves 3 and 4 are connected to the load ports X and Y, while each of the above The rear pilot ports F of the main valves 1 to 4 are communicated with the pilot passage 21 having the pilot valves 11 to 14, and the first and second
The pilot passages 21 and 21 of the main valves 1 and 2 are connected to the load port X. The pilot passages 21 of the third and fourth main valves 3 and 4 are connected to Y.
．． 21 to the tank port T, respectively, and
Each of the pilot passages 21... is connected to a pump port P and a load port X, Y which are upstream with respect to the load ports X, Y and tank port T communicating with these pilot passages 21... through a throttle 24. A logic switching circuit characterized in that the logic switching circuit is made to communicate with each other.