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AssigneeToto Ltd.
InventorsKazuo Hiraishi, Itsunao Koga, Hiroyuki Seki, Taisuke Houei, Takanobu Matsufuji, Yoshinori Nishimoto, Katsuhiro Kawahara
Estimating the term…
A solenoid comprising a solenoid coil having a longitudinal hole at the center of a bobbin made of a non-magnetic material and a coil winding wound around the peripheral wall of the bobbin. A yoke comprising a peripheral side plate, an upper end plate and a lower end plate all for the covering the outer peripheral surface and both end surfaces of solenoid coil, a pole core disposed at one end of the longitudinal hole and a plunger fitted slidably into the other end of the longitudinal hole. The solenoid further comprises a protrusion member for forming an irregular magnetic field, formed integrally at the center of the yoke, and a recess for fitting the protrusion member from the end surface of the peripheral wall of the bobbin formed in the peripheral wall. A diaphragm of a solenoid valve for opening and closing a main valve port, opened and closed by the movement of the plunger operating at a constant stroke above a predetermined feed water pressure and at a stroke proportional to the water drainage pressure below the predetermined feed water pressure.
A solenoid for driving a plunger, comprising:
A solenoid for driving a plunger, comprising:
A solenoid comprising an electromagnetic coil including a longitudinal hole formed at a central portion of a bobbin made of a nonmagnetic material and a coil winding wound around a peripheral wall thereof, a yoke having a peripheral side plate, an upper end plate and a lower end plate to cover an outer peripheral face and both end faces of said electromagnetic coil, a pole core arranged at one end of said longitudinal hole and a plunger inserted movably into said longitudinal hole, a coil winding end treating space where said coil winding is not wound being formed at an outer peripheral face of said pole core, an opening for drawing a coil winding of a coil winding end portion to outside being provided to said yoke and said opening being closed by waterproofing means.
A solenoid comprising an electromagnetic coil having a longitudinal hole formed at a central portion of a bobbin made of a nonmagnetic material and a coil winding wound around a peripheral wall thereof, a yoke arranged at an outer periphery of said electromagnetic coil, a pole core arranged at one end of said longitudinal hole and a plunger inserted movably into said longitudinal hole, a permanent magnet being arranged at an external side of said pole core and a coil winding end portion treating space where said coil winding is not wound being formed at an outer peripheral face of said bobbin corresponding to said permanent magnet.
A solenoid valve wherein a pilot valve hole and a bleed hole are installed to a diaphragm and a main valve hole is opened and closed by opening and closing said pilot valve hole by a movement operation of a plunger of a solenoid, said diaphragm having a reaction force characteristic where a reaction force is maintained constant during at least a first stroke and said reaction force is proportional to a water pressure below said first stroke.
A solenoid valve comprising a diaphragm having a pilot valve hole and a bleed hole and a pin penetrating through said bleed hole where a main valve hole is opened and closed by opening and closing said pilot valve hole by a movement operation of a plunger of a solenoid, a strainer being installed on a primary side of water supply of said solenoid valve, and a sectional area of a gap between said bleed hole and said pin being fixed to be substantially equal to or larger than a mesh of said strainer.
Dependencies are inferred from the claim text.