JPH0428202U

JPH0428202U -

Info

Publication number: JPH0428202U
Application number: JP6914990U
Authority: JP
Priority date: 1990-06-29
Filing date: 1990-06-29
Publication date: 1992-03-06

Description

[Brief explanation of the drawing]

第１図は本考案の実施例１である切換弁を示す
断面図、第２図は本考案の実施例２である切換弁
の要部を示す断面図、第３図は本考案の実施例３
である切換弁の要部を示す断面図である。１……主弁、２……パイロツト弁、３……ソレ
ノイド部、４……主弁本体、５……軸孔、６……
入力孔、６ａ……入力ポート、７……出力孔、７
ａ……出力ポート、８……排出孔、８ａ……排出
ポート、８ｂ……小径孔、８ｃ……大径孔、９…
…逆止弁、１０……マニホールド、１１……主軸
、１２……小径部、１２ａ……第１の小径部、１
２ｂ……第２の小径部、１３，１３ａ……大径部
、１４……第１の弁座、１５……リツプシール、
１６……主パイロツト通路、１６ａ……第１の副
パイロツト通路、１６ｂ……第２の副パイロツト
通路、１７……エンドカバー、１８……第１の流
体室、１９……第１のピストン、２０……パイロ
ツト弁本体、２１……第２の流体室、２１Ｌ……
左側流体室、２１Ｒ……右側流体室、２２……第
２のピストン、２３……パイロツト排出ポート、
２４……第３の流体室、２５……第２の弁座、２
６……連通路、２７……プランジヤピン、２８…
…フラツパ、２９……フラツパばね、３０……ボ
ビン、３１……固定コア、３２……プランジヤ、
３３……ポペツト、３４……プランジヤばね、３
５……ソレノイドコイル、３６……ソレノイドカ
バー、３７……弁座、３８……弁座、３９……弁
座、４０……ばね、４１……ばね受部、４２……
ポペツト、４３……逆止弁、４４……排出孔、４
５……弁本体、４６……排出ポート、４７……弁
本体ガイド口、４８……第１の排出通路、４９…
…第２の排出通路、５０……排出路、５１……弁
体、５２……テーパ孔、５３……ガイド部、５４
……弁部、５５……排出通路、５６……基部。 Fig. 1 is a cross-sectional view showing a switching valve which is a first embodiment of the present invention, Fig. 2 is a cross-sectional view showing the main parts of a switching valve which is a second embodiment of the present invention, and Fig. 3 is an embodiment of the present invention. 3
FIG. 3 is a cross-sectional view showing the main parts of the switching valve. 1... Main valve, 2... Pilot valve, 3... Solenoid section, 4... Main valve body, 5... Shaft hole, 6...
Input hole, 6a... Input port, 7... Output hole, 7
a... Output port, 8... Discharge hole, 8a... Discharge port, 8b... Small diameter hole, 8c... Large diameter hole, 9...
...Check valve, 10... Manifold, 11... Main shaft, 12... Small diameter part, 12a... First small diameter part, 1
2b... Second small diameter part, 13, 13a... Large diameter part, 14... First valve seat, 15... Lip seal,
16... Main pilot passage, 16a... First sub-pilot passage, 16b... Second sub-pilot passage, 17... End cover, 18... First fluid chamber, 19... First piston, 20...Pilot valve body, 21...Second fluid chamber, 21L...
Left side fluid chamber, 21R...Right side fluid chamber, 22...Second piston, 23...Pilot discharge port,
24...Third fluid chamber, 25...Second valve seat, 2
6...Communication path, 27...Plunger pin, 28...
...Flatspa, 29...Flatspa spring, 30...Bobbin, 31...Fixed core, 32...Plunger,
33...Poppet, 34...Plunger spring, 3
5... Solenoid coil, 36... Solenoid cover, 37... Valve seat, 38... Valve seat, 39... Valve seat, 40... Spring, 41... Spring receiver, 42...
Poppet, 43... Check valve, 44... Discharge hole, 4
5... Valve body, 46... Discharge port, 47... Valve body guide port, 48... First discharge passage, 49...
...Second discharge passage, 50...Drain passage, 51...Valve body, 52...Tapered hole, 53...Guide portion, 54
... Valve part, 55 ... Discharge passage, 56 ... Base.

Claims

[Claims for Utility Model Registration] 1. A shaft hole for sliding the main shaft is formed in the valve body along the axial direction, and an input hole, an output hole, and a discharge hole communicating orthogonally to the shaft hole are formed in the valve body. 1. A switching valve, characterized in that the switching valve has an opening on the outer circumferential surface of the switching valve, and a check valve is provided in the discharge hole. 2. The check valve has a valve seat formed in the discharge hole, a poppet disposed so as to be pressable on the valve seat, a spring receiver mounted by screwing on the discharge port side, and the poppet and the spring. 2. The switching valve according to claim 1, further comprising a spring interposed between the switching valve and the receiving portion. 3. The check valve is screwed into the discharge hole and is provided between a valve body having a discharge passage and a tapered hole of the discharge hole,
2. The switching valve according to claim 1, further comprising a valve body pressed against the outer circumferential surface of the discharge hole and the tapered hole by back pressure. 4. The check valve includes a valve body that is screwed into the discharge hole, has a discharge passage, and forms a discharge passage between the discharge passage and the inner circumferential surface of the discharge hole;
2. The switching valve according to claim 1, further comprising a valve body fitted onto the outer circumferential surface of the valve body and pressed against the outer circumferential surface of the discharge passage by back pressure.