Abstract: A current sensor includes: a housing that holds a busbar to which a current is applied and a core arranged around the busbar; a circuit board fixed to the housing in the state of being arranged to face the housing; and a detection element for detecting the current; wherein the detection element has an element main body held in the housing and plural connection terminals fixed in through-holes in the circuit board, and a plate-like member provided with guide holes in which the connection terminals are inserted and which have a diameter reduced from the side of the housing toward the side of the circuit board is provided on a surface facing the housing, of two surfaces of the circuit board.

Abstract: A current sensor includes: a core formed by U-shaped flat plates made of a magnetic body and stacked together; a flat plate-like conductor which is inserted on an interior side of a U-groove of the core and through which a current to be measured flows; a detection element which is arranged on the side of an opening of the U-groove in such a way that a detecting direction extends in a spacing direction of the opening, and which detects a strength of a magnetic field; a housing which supports the core, the conductor and the detection element; and a pair of spacing direction supporting portions which are provided at positions along the spacing direction on both sides of the detection element, in an opening-side end of the core, and which abut on the housing.

Abstract: A current sensor includes: a core formed by U-shaped flat plates made of a magnetic body and stacked together; a flat plate-like conductor which is inserted on an interior side of a U-groove of the core and through which a current to be measured flows; a detection element which is arranged on the side of an opening of the U-groove in such a way that a detecting direction extends in a spacing direction of the opening, and which detects a strength of a magnetic field; a housing which supports the core, the conductor and the detection element; and a pair of spacing direction supporting portions which are provided at positions along the spacing direction on both sides of the detection element, in an opening-side end of the core, and which abut on the housing.

Abstract: A current sensor includes: a housing that holds a busbar to which a current is applied and a core arranged around the busbar; a circuit board fixed to the housing in the state of being arranged to face the housing; and a detection element for detecting the current; wherein the detection element has an element main body held in the housing and plural connection terminals fixed in through-holes in the circuit board, and a plate-like member provided with guide holes in which the connection terminals are inserted and which have a diameter reduced from the side of the housing toward the side of the circuit board is provided on a surface facing the housing, of two surfaces of the circuit board.

Abstract: A fluid control valve includes a valve body, an annular groove portion formed in an outer periphery of the valve body, a filter provided in the groove portion. The filter includes a plate with a plural of perforations and formed into a cylindrical shape. The filter further includes a snap ring formed from a thin bar bent into a loop. Both ends of the snap ring extending in an axial direction and freely contacting with opposed side surfaces defining the groove portion.

Abstract: An electromagnetic valve comprises a first yoke member having an approximately cylindrical shape, a second yoke member having an approximately cylindrical shape and being disposed so as to be opposite to the first yoke member, a bobbin being molded by resin so as to surround the first yoke member and the second yoke member and being integral with the first yoke member and the second yoke member, a plunger being fitted into the first yoke member and the second yoke member so as to be movable in the axial direction, a valve member being moved by the plunger, and a plug member disposed between the opposite surfaces of the first and second yoke members.

Abstract: A fluid control valve includes a valve body, an annular groove portion formed in an outer periphery of the valve body, a filter provided in the groove portion. The filter includes a plate with a plural of perforations and formed into a cylindrical shape. The filter further includes a snap ring formed from a thin bar bent into a loop. Both ends of the snap ring extending in an axial direction and freely contacting with opposed side surfaces defining the groove portion.

Abstract: An electromagnetic valve comprises a coil wound on a bobbin made of resin, a case accommodating the coil inside thereof and made of magnetic material, a yoke made of magnetic material and forming a magnetic circuit together with the case, a plunger made of magnetic material and driven by a magnetic attracting force generated at the energization of the coil, a connector formed separately from the bobbin and the case and connected to one end of the case, a first terminal passed into the connector, a second terminal electrically connected to an end of the coil and a urging member made of electric conductor and contacted with the first and second terminals.

Abstract: An electromagnetic valve includes a plunger driven by an electromagnetic mechanism, a tubular spool moved by the plunger in the axial direction, a valve body having fluid passages, a sleeve accommodating the spool therein so as to be able to slide in the axial direction and fitted into the valve body, a ball member pressed into one end of the spool and a pushing member fixed to the plunger and contacted with the ball member.

Abstract: An electromagnetic valve comprises a coil wound on a bobbin made of resin, a case accommodating the coil inside thereof and made of magnetic material, a yoke made of magnetic material and forming a magnetic circuit together with the case, a plunger made of magnetic material and driven by a magnetic attracting force generated at the energization of the coil, a connector formed separately from the bobbin and the case and connected to one end of the case, a first terminal passed into the connector, a second terminal electrically connected to an end of the coil and a urging member made of electric conductor and contacted with the first and second terminals.

Abstract: An electromagnetic valve comprises a case having a cylindrical portion, a yoke having a large diameter portion and a small diameter portion, and a sleeve having at least two ports and receiving a valve member therein so as to perform reciprocating motion. The large diameter portion of the yoke is fluid-tightly pressed into the inner circumferential surface of the cylindrical portion of the case, and the inner circumferential surface of the sleeve is fluid-tightly pressed onto the outer circumferential surface of the small diameter portion of the yoke.

Abstract: An electromagnetic valve comprises a first yoke member having an approximately cylindrical shape, a second yoke member having an approximately cylindrical shape and being disposed so as to be opposite to the first yoke member, a bobbin being molded by resin so as to surround the first yoke member and the second yoke member and being integral with the first yoke member and the second yoke member, a plunger being fitted into the first yoke member and the second yoke member so as to be movable in the axial direction, a valve member being moved by the plunger, and a plug member disposed between the opposite surfaces of the first and second yoke members.

Abstract: An electromagnetic valve compromises a case having a cylindrical portion, a yoke having a large diameter portion and a small diameter portion, and a sleeve having at least two ports and receiving a valve member therein so as to perform reciprocating motion. The large diameter portion of the yoke is fluid-tightly pressed into the inner circumferential surface of the cylindrical portion of the case, and the inner circumferential surface of the sleeve is fluid-tightly pressed onto the outer circumferential surface of the small diameter portion of the yoke.

Abstract: An electromagnetic valve device capable of reducing the number of assembled parts and manufacturing cost thereof includes a stable core arranged in a solenoid, a movable core slidable in the solenoid to form a magnetic gap with the stable core, a casing made of magnetic material and provided with a holder portion extending along the outer periphery of the solenoid and a yoke portion extending inside of the solenoid in sliding contact with the movable core, and a base made of synthetic resin unitedly molded with the casing and opposed to the movable core so as to form a valve member with the movable core. The yoke portion of the casing can sufficiently contact the movable core so as to allow the movable core to act as a valve with the base in association with a return spring for normally biasing the movable core toward the base.

Abstract: A coil device comprising a bobbin provided at one end thereof with a flange, a wire wound around the bobbin, a pair of terminals provided on the flange and connected to both ends of the wire, and a device for reducing concentration of stress to the ends of the wire during shrinkage and expansion of the bobbin associated with changes in temperature. A method for producing a coil device can include providing a bobbin having a wound wire and a flange provided at one end portion, partially inserting terminals into respective grooves formed in the flange, connecting ends of the wire to the terminals, and moving the terminals within the grooves to produce slack in the wire.