A solenoid valve having current dependent bi-directional force includes a stator with a channel. An armature is in the stator channel. The armature is movable in a first and second direction. A projection extends from the stator into the channel. When a low current is applied, a flux is generated such that it jumps from the projection to the armature and back to the stator. Thus, the armature is pulled in the first direction. As the current is increased, the projection becomes magnetically saturated and the additional flux as a result of increased current jumps from the stator, at a thinned portion, to the armature then back to the stator. This moves the armature in the second direction, opposite to the first direction.

A valve includes a solenoid with a chamber housing a pin that actuates when the solenoid is energized. The valve also includes a spool housed within a sleeve. The sleeve includes a supply section with a supply port in communication with a supply source and a tank section with a tank port in communication with a reservoir. The spool includes a body including a first passage receiving fluid from the supply source when an opening for the first passage aligns with the supply port. When the solenoid is energized and the opening for the first passage aligns with the supply port, fluid from the supply source (i) applies a force to the spool body in a direction of actuation by the pin and (ii) flows to a second passage within the valve.

A capacity control valve includes valve housings to which a suction fluid of a suction pressure Ps and a control fluid of a control pressure Pc are supplied; a solenoid; a CS valve formed of a CS valve body that partitions an inside of the valve housings into a first space and a second space and moves according to the suction pressure Ps of the suction fluid and the control pressure Pc of the control fluid, and a CS valve seat with which the CS valve body is configured for coming into contact; a biasing member that biases the CS valve body in a valve closing direction of the CS valve; and a pilot valve formed of a pilot valve body to be driven by the solenoid and a pilot valve seat with which the pilot valve body is configured for coming into contact.

Systems and apparatuses include a solenoid valve including a first coil, a second coil coupled to the first coil, a banjo fitting coupled to the second coil, a spool housing coupled to the banjo fitting so that the first coil and the second coil are selectively rotatable about the spool housing, a spool received within the spool housing, and an armature received within the first coil and the second coil and including a spool actuator coupled to the spool.

The absence of high efficiency, compact fluidic pumps has until recently blocked the consideration of using hydraulic devices within portable and/or alkaline battery powered consumer and non-consumer products. The higher the functionality and programmability desired for a consumer and/or non-consumer product exploiting a fluidic pump then the more complex the overall fluidic system in terms of the number of actuators, valves, switches etc. within the fluidic system coupled to the one or more fluidic pumps. Accordingly, there exists a requirement to provide compact fluidic valves and switches to support configurability, programmability, and operation of these portable battery-operated consumer and non-consumer devices in conjunction with these newly available high efficiency, compact fluidic pumps. Such fluidic valves and switches should offer high efficiency, have a small footprint, be low complexity for high reliability and ease of manufacture, and low cost.

To provide an electromagnetic valve capable of preventing damage due to stress of a buffer member. An electromagnetic valve includes a solenoid having a case, a flow path member, and a columnar valve element that is housed in the valve element housing portion of the flow path member and moves with a plunger of the solenoid to open and close a flow path. A seat member with which the plunger comes into contact is disposed in the case of the solenoid. The seat member includes a core portion with which the plunger comes into contact, and a plurality of protruding portions protruding radially outward from an outer peripheral surface on the radially outer side of the core portion.

A bistable hydraulic solenoid valve has a valve spool that transitions between two positions, remaining in one of the two positions under an attractive magnetic force when the solenoids are not energized. The valve spool has a first permanent magnet attached to one end and a second permanent magnet attached to the other end, so that the first permanent magnet faces a first solenoid, and the second permanent magnet faces a second solenoid. The first solenoid is energized to have a first polarity, and the second solenoid is energized to have an opposite polarity to concurrently push and pull the valve spool within the valve body between a first position and a second position, the first position establishing a first flow path and the second position establishing a second flow path through the valve body and valve spool so as to enable flow of hydraulic fluid.

An electromagnetic valve manifold includes an electromagnetic valve including an output port, a manifold base including an output passage, and a spacer arranged between the manifold base and the electromagnetic valve. The spacer includes a spacer block including a shaft hole and a manual shaft accommodated in the shaft hole. The spacer block includes an output connecting passage that is connected to the shaft hole and connects the output passage and the output port to each other. The manual shaft is configured to be manually operated to be switched between a first switching position, in which the manual shaft allows for connection between the output passage and the output port through the output connecting passage, and a second switching position, in which the manual shaft blocks the connection between the output passage and the output port through the output connecting passage.

A solenoid valve in which a plunger is disposed in an accommodation space inside a solenoid unit, includes: a first breathing flow passage extending in a circumferential direction on an outer periphery of a stator to communicate with an outside of the solenoid valve; a second breathing flow passage extending from the first breathing flow passage in an axial direction at a part in the circumferential direction to communicate with a first space formed between the stator, a sleeve, and a spool; and a third breathing flow passage extending in the axial direction on an inner periphery of the stator to allow communication between the first space and a second space.

A hydraulic oil control valve is coaxially disposed with a rotational axial of a valve timing adjustment device. The hydraulic oil control valve includes a sleeve, a spool slidably moving in an axial direction within the sleeve, and a filter member configured to capture foreign matters contained in the hydraulic oil. The sleeve includes an inner sleeve and an outer sleeve defining therein an axial hole extending in the axial direction. A space between the axial hole and the inner sleeve in a radial direction serves as a hydraulic oil supply passage. The filter member is disposed in the space to overlap with at least one of internal members in the inner sleeve when viewed in the radial direction.