초록 ▼

A solenoid-operated pressure-fluid valve for reversible control of both supply and exhaust functions of a double-acting fluid-pressure device. A valve body has an inlet port communicating with an inlet chamber and an exhaust-outlet port communicating with an outlet chamber. The valve body has first

A solenoid-operated pressure-fluid valve for reversible control of both supply and exhaust functions of a double-acting fluid-pressure device. A valve body has an inlet port communicating with an inlet chamber and an exhaust-outlet port communicating with an outlet chamber. The valve body has first and second control-port connections for connection to the respective control ports of the double-acting device, and each of these connections communicates with a valve seat in each of the chambers. A rocker arm is pivoted between the two chambers and carries two valve members in each of the two chambers. In one solenoid-actuated position of the rocker arm, valve-member action in the inlet chamber establishes inlet-chamber communication exclusively with one control-port connection while the valve-member action in the outlet chamber establishes outlet-chamber communication exclusively with the other control-port connection; in the other solenoid-actuated position, valve-member action in the respective chambers is such as to reverse the exclusivity of chamber communication with the respective control-port connections.

대표청구항 ▼

A solenoid-operated pressure-fluid valve for reversible control of both supply and exhaust functions of a double-acting fluid-pressure device, said valve comprising a valve body having an inlet port communicating with an inlet chamber and an exhaust outlet port communicating with an outlet chamber,

A solenoid-operated pressure-fluid valve for reversible control of both supply and exhaust functions of a double-acting fluid-pressure device, said valve comprising a valve body having an inlet port communicating with an inlet chamber and an exhaust outlet port communicating with an outlet chamber, said chambers having a communicating passage therebetween, a rocker arm fulcrummed in said communicating passage and flexibly sealed therein to preclude fluid flow in said communicating passage, said body having first and second control-port connections for connection to the respective control ports of the double-acting device, first and second valve-seat formations in the respective chambers in one direction of lateral offset from said rocker arm and communicating with said first control port, third and fourth valve-seat formations in the respective chambers in the opposite direction of lateral offset from said rocker arm, and communicating with said second control port, a first pair of valve members carried by said arm within the inlet chamber and positioned to coact with the respective valve seats in the inlet chamber in accordance with rocker-arm pivotal position, a second pair of valve members carried by said arm within the outlet chamber and positioned to coact with the respective valve seats in the outlet chamber in accordance with rocker-arm pivotal position; said first control port being open to said inlet chamber and closed to said outlet chamber for one rocker-arm pivoted position, while said second control port is closed to said inlet chamber and open to said outlet chamber for said one rocker-arm position; said first control port being closed to said inlet chamber and open to said outlet chamber for a second rocker-arm pivoted position, while said second control port is open to said inlet chamber and closed to said outlet chamber for said second rocker-arm pivoted position; and means including a solenoid actuator for actuating said rocker arm from one to the other of its said positions.