Solenoid valve for hydraulic control

Details Solenoid valve for hydraulic control Solenoid valve for hydraulic control

1985-08-19

1987-03-03

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Balanced valve

25112915, F16K 3106

Patent

active

046470085

ABSTRACT:
A solenoid valve for hydraulic control, comprises: a stationary iron core; a guide pipe; a return spring; a plunger; and a valve body.
Firstly, the plunger is made slidable immediately on the inner periphery of a columnar recess of the stationary iron core, whereby a magnetic reluctance of a magnetic path formed when a current is passed is decreased, so that an attracting force can be increased accordingly.
Furthermore, the plunger made hollow is made slidable on the outer periphery of the guide pipe and the valve body is fixed to and disposed at an end portion of the plunger, so that these movable members can be rendered light in weight.
Further, a member for guiding the sliding of the plunger (a guide pipe) is disposed on the inner periphery of the plunger made hollow, further, this guide member is made hollow, and a return spring is incorporated in this guide member, so that the solenoid valve as a whole can be rendered very compact.
Moreover, an input port is disposed on an axis, so that the positional relationship of another component as being a counterpart, to which the solenoid valve is mounted, can be simplified.

REFERENCES:
patent: 3368789 (1968-02-01), Martin
patent: 3588039 (1971-06-01), Chelminski et al.
patent: 3653630 (1972-04-01), Ritsema
patent: 4310123 (1982-01-01), Te Pastte

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