Solenoid valve
AssigneeKoganei Corporation
InventorHirokazu Ohki
Life of this patent
Estimating the term…
Abstract
A solenoid valve (10) has a valve housing (11); one end portion of the valve housing (11) is provided with a flow passage portion (16) having ports and a valve element housing hole to store a poppet valve (41), and the other end portion of the valve housing (11) is opened. Parts, such as a fixed iron core (50) having a supporting leg (52) and a driving leg (51), and a movable iron core (60) which drives the poppet valve (41) is inserted from an opening end (17) on the other end portion of the valve housing (11). All parts to be inserted into the valve housing (11) are inserted from one direction.
Claims8
A solenoid valve comprising:
- a valve housing in which a poppet valve is assembled, the valve housing having two end portions, one end portion of the valve housing being provided with a flow passage portion having ports, and other end portion of the valve housing being provided with an opening, the poppet valve being operated between a closed position in which the poppet valve abuts on a valve seat to block communication among ports, and an open position in which the poppet valve separates from the valve seat to enable communication among the ports;
- a flow passage block which is attached to the flow passage portion so as to partition a valve element housing hole;
- a bobbin which is provided with a coil and a fixed iron core;
- a movable iron core which is disposed between the fixed iron core and the flow passage block so as to drive the poppet valve;
- and
- a flat spring having a spring force which urges the movable iron core in a direction separating from the fixed iron core,
- wherein the flow passage block has a bottom surface which abuts on the valve housing, and
- the flat spring has a bottom surface which abuts on an upper surface of the flow passage block;
- and an upper surface which abuts on a bottom surface of the bobbin.
A method of producing a solenoid valve comprised of a valve housing in which a poppet valve is assembled, the valve housing having two end portions, one end portion of the valve housing being provided with a flow passage portion having ports, and other end portion of the valve housing being provided with an opening, the poppet valve being operated between a closed position in which the poppet valve abuts on a valve seat to block communication among ports, and an open position in which the poppet valve separates from the valve seat to enable communication among the ports;
- a flow passage block which is attached to the flow passage portion so as to partition a valve element housing hole;
- a bobbin which is provided with a coil and a fixed iron core;
- a movable iron core which is disposed between the fixed iron core and the flow passage block so as to drive the poppet valve;
- and a flat spring having a spring force which urges the movable iron core in a direction separating from the fixed iron core, wherein the flow passage block has a bottom surface which abuts on the valve housing, and the flat spring has:
- a bottom surface which abuts on an upper surface of the flow passage block;
- and an upper surface which abuts on a bottom surface of the bobbin, wherein:
- the method comprises the steps of:
- installing the poppet valve, the flow passage block, the flat spring, the movable iron core, and the bobbin in the valve housing via the opening of the valve housing;
- and
- injecting a liquid-state resin into the valve housing so that the movable iron core and the bobbin are fixed to the valve housing by the resin.
Dependencies are inferred from the claim text.