The bistable electromechanical actuator comprises an actuator shaft (7) arranged in a house (1), said shaft being movable along its longitudinal direction, a base member (11) attached to the actuator shaft (7), said base member being slidably attached to a guiding element (3, 3,3) through a stud (15), said guiding element being secured to the house and having two locking notches (2a, 2b) with a predetermined distance therebetween and further having a straight or substantially straight guiding section (2c) formed between said two locking notches in a plane parallel to the longitudinal direction of said shaft (7), wherein at least one permanent magnet is fixed to the base member (11) so that the magnetic axis of each permanent magnet is perpendicular or substantially perpendicular to the longitudinal direction of said shaft (7), and wherein at least one electromagnetic coil (13) is arranged within said house (1) so that in an idle state of the actuator, one end of each coil (13) is arranged to be adjacent to one of the at least one permanent magnet (12) in such a manner that the position of said end of the respective coil (13) is slightly offset, along the longitudinal direction of said shaft (7), with respect to the position of the permanent magnet (12) adjacent thereto.

The bistable electromechanical actuator comprises an actuator shaft (7) arranged in a house (1), said shaft being movable along its longitudinal direction, a base member (11) attached to the actuator shaft (7), said base member being slidably attached to a guiding element (3, 3,3) through a stud (15), said guiding element being secured to the house and having two locking notches (2a, 2b) with a predetermined distance therebetween and further having a straight or substantially straight guiding section (2c) formed between said two locking notches in a plane parallel to the longitudinal direction of said shaft (7), wherein at least one permanent magnet is fixed to the base member (11) so that the magnetic axis of each permanent magnet is perpendicular or substantially perpendicular to the longitudinal direction of said shaft (7), and wherein at least one electromagnetic coil (13) is arranged within said house (1) so that in an idle state of the actuator, one end of each coil (13) is arranged to be adjacent to one of the at least one permanent magnet (12) in such a manner that the position of said end of the respective coil (13) is slightly offset, along the longitudinal direction of said shaft (7), with respect to the position of the permanent magnet (12) adjacent thereto.

A solenoid for a solenoid-actuated valve includes a coil, a flux tube, a pole piece disposed axially from the flux tube and encircled by the coil, a movable armature disposed in the flux tube and the pole piece, and a latch disposed between the flux tube and the pole piece to selectively latch the armature into at least one position.

A solenoid contains a yoke, a bobbin having an electromagnetic coil disposed inside the yoke, and an iron core disposed inside the bobbin. In the solenoid, a connector part incorporating a prescribed number of terminal metal fittings is provided on one end portion of the bobbin.

An electromechanical transducer includes: a structural portion configured such that two pairs of magnets magnetized in opposite directions, a yoke configured to guide magnetic fluxes from the magnets, and a coil configured to receive a supplied electric signal are located integrally; an armature having an inner portion penetrating an internal space of the structural portion and outer portions protruding from the inner portion toward both sides in a first direction, forming, together with the structural portion, a magnetic circuit through regions of the inner portion facing the two pairs of magnets, and configured to displace in a second direction perpendicular to the first direction by magnetic force of the magnetic circuit; and a pair of elastic members each located on both sides of the armature in the second direction, and configured to provide, to the armature, restoring force according to relative displacement of the armature corresponding to the structural portion.

An electromechanical transducer includes: a structural portion configured such that two pairs of magnets magnetized in opposite directions, a yoke configured to guide magnetic fluxes from the magnets, and a coil configured to receive a supplied electric signal are located integrally; an armature having an inner portion penetrating an internal space of the structural portion and outer portions protruding from the inner portion toward both sides in a first direction, forming, together with the structural portion, a magnetic circuit through regions of the inner portion facing the two pairs of magnets, and configured to displace in a second direction perpendicular to the first direction by magnetic force of the magnetic circuit; and a pair of elastic members each located on both sides of the armature in the second direction, and configured to provide, to the armature, restoring force according to relative displacement of the armature corresponding to the structural portion.

The solenoid valve (10) has a poppet valve (41) which is operated to move between a position to close a port and a position to open the port. A fixed iron core (50) having a supporting leg (52) and a driving leg (51) is installed in a valve housing (11), and a movable iron core (60) which drives the poppet valve (41) is disposed between a valve driving member (42) and the fixed iron core (50). An arcuate sliding contact surface (61) is provided on one end portion of the movable iron core (60), and a sliding-abutting surface (62) which abuts on the sliding contact surface (61) is provided on a leading end portion of the supporting leg (52). When a coil (56) is de-energized, the sliding-contacting surface (61) is pressed onto the sliding-abutting surface (62) by a flat spring (70), with an abutting portion of the valve driving member (42) serving as a fulcrum of a tensile force applied to the movable iron core (60).

The solenoid valve (10) has a poppet valve (41) which is operated to move between a position to close a port and a position to open the port. A fixed iron core (50) having a supporting leg (52) and a driving leg (51) is installed in a valve housing (11), and a movable iron core (60) which drives the poppet valve (41) is disposed between a valve driving member (42) and the fixed iron core (50). An arcuate sliding contact surface (61) is provided on one end portion of the movable iron core (60), and a sliding-abutting surface (62) which abuts on the sliding contact surface (61) is provided on a leading end portion of the supporting leg (52). When a coil (56) is de-energized, the sliding-contacting surface (61) is pressed onto the sliding-abutting surface (62) by a flat spring (70), with an abutting portion of the valve driving member (42) serving as a fulcrum of a tensile force applied to the movable iron core (60).

An appliance latch for latching an appliance door to an appliance cabinet that includes a housing and a lock bolt positioned to move linearly within the housing between a locked state and an unlocked state. A solenoid is positioned within the housing and includes an integrated magnetic lock, distinct from the lock bolt, to prevent undesired movement from the locked state to the unlocked state and movement from the unlocked state to the locked state.

An electric switch is provided. The electric switch comprises a contact system, an actuation element, an engaging latch, and an actuator. The actuation element moves between an initial position and an actuation position to switch and changeover the contact system. The actuation element is located in a direction of the initial position by a force of a return spring. The engaging latch locks the actuation element in the initial position or the actuation position. A non-manual unlocking between the actuation element and the engaging latch is performed by the actuator.