Abstract: A reactor includes an edgewise coil constituted by a flat wire; a magnetic core where the coil is disposed; and a holding member disposed on at least one end section of the coil, in which the coil includes a main body portion constituted by a plurality of turns, and a first terminal section that is drawn out from one end section of the main body portion in a direction extending along an end surface of the main body portion, the holding member includes a first surface facing the end surface of the main body portion and a fixing portion that holds the first terminal section, and the fixing portion has a slit through the first terminal section is passed.

Abstract: A reactor includes a coil, a magnetic core and a sensor for measuring a physical quantity of the reactor. The coil includes a tubular winding portion. The magnetic core includes a first end core portion, a second end core portion, a middle core portion, a first side core portion and a second side core portion. The middle core portion includes a part to be arranged inside the winding portion. The first side core portion and the second side core portion are arranged in parallel outside the winding portion to sandwich the middle core portion. The middle core portion, the first side core portion and the second side core portion connect the first end core portion and the second end core portion. A relative magnetic permeability of the second end core portion is larger than that of the first end core portion.

Abstract: A reactor comprising a coil that has a wound portion and a magnetic core that has a middle core portion, wherein the wound portion is disposed on the middle core portion, the middle core portion is divided into a first middle core portion and a second middle core portion in a direction along the axis of the wound portion, the relative magnetic permeability of the second middle core portion is larger than the relative magnetic permeability of the first middle core portion, and the central position of the wound portion in a direction along the axis thereof is positioned in a region that is closer to the second middle core portion in comparison to the central position of the middle core portion in a direction along the axis thereof.

Abstract: A reactor includes a coil, a magnetic core and a temperature sensor. The coil includes a first coil portion and a second coil portion. The first coil portion includes a plurality of first turns where a flat wire is wound edgewise. Each of the plurality of first turns includes a first inner peripheral portion that constructs an inner periphery side of the first turn and a first outer peripheral portion that constructs an outer periphery side of the first turn. The first outer peripheral portion is bent with respect to the first inner peripheral portion so as to be inclined in a first direction. The second coil portion includes a plurality of second turns where the flat wire is wound edgewise.

Abstract: A reactor is provided with a coil including a winding portion, a magnetic core including an E-shaped first core portion, a T- or E-shaped second core portion and a gap portion, and a molded resin portion. The first core portion is a compact of a composite material including a first middle core portion. The second core portion is a powder compact including a second middle core portion. The gap portion is arranged between an end surface of the first middle core portion and an end surface of the second middle core portion inside the winding portion. The end surface of the first middle core portion has an annular outer end surface, a peripheral surface and an inner end surface. The end surface of the second middle core portion, the outer end surface and the inner end surface are flat surfaces.

Abstract: A reactor comprising a coil that has a wound portion and a magnetic core that has a middle core portion, wherein the wound portion is disposed on the middle core portion, the middle core portion is divided into a first middle core portion and a second middle core portion in a direction along the axis of the wound portion, the relative magnetic permeability of the first middle core portion is smaller than the relative magnetic permeability of the second middle core portion, and the central position of the wound portion in a direction along the axis thereof is positioned in a region which is closer to the first middle core portion in comparison to the central position of the middle core portion in a direction along the axis thereof.

Abstract: A magnetic core includes an E-shaped first core portion, a T-shaped second core portion, and a gap portion, the first core portion is formed of a molded body made of a composite material, the second core portion is formed of a powder compact, the gap portion is disposed between a first middle core portion of the first core portion and a second middle core portion of the second core portion, a length from a second end surface of the winding portion to the gap portion is 0.2 times or more and 0.49 times or less a length of the winding portion, and a total volume of a volume of the first core portion, a volume of the second core portion, and a volume of the gap portion is 50 cm3 or more and 500 cm3 or less.

Abstract: A reactor includes an assembly of a coil and a magnetic core; a case that houses the assembly; and a sealing resin portion that seals a portion of the assembly. The reactor further includes a heat dissipation member interposed between the coil and the case. The case has an inner bottom surface and the pair of coil facing surfaces have inclined surfaces that are inclined away from each other. The coil includes a first winding portion and a second winding portion disposed opposite of the inner bottom surface with respect to the first winding portion. The first winding portion and the second winding portion are parallel with each other, and have the same width. The heat dissipation member includes a first heat dissipation portion interposed between at least one of the inclined surfaces and the second winding portion.

Abstract: A reactor includes an assembly of a coil and a magnetic core; a case; and a sealing resin portion filling the case and sealing at least a portion of the assembly. The case has an inner bottom surface, and a pair of coil facing surfaces that face side surfaces of the coil. The pair of coil facing surfaces have inclined surfaces that incline away from each other in a direction from the inner bottom surface side to an opposite side to the inner bottom surface. The coil includes a first winding portion disposed on the inner bottom surface side, and a second winding portion disposed opposite of the inner bottom surface with respect to the first winding portion. The first winding portion and the second winding portion are in a vertical arrangement and are parallel with each other. The second winding portion is wider than the first winding portion.

Abstract: A reactor includes a coil, a magnetic core, and a resin molded portion. The coil includes two winding portions and a linking portion connecting the two winding portions to each other. The magnetic core includes inner core portions disposed inside the winding portions, and outer core portions disposed outside the winding portions. At least one of the two outer core portions includes a composite core. The composite core has a portion protruding upward in the height direction relative to a virtual surface obtained by extending an outer circumferential surface of the inner core portions, and includes a first composite core in which the compact made of the composite material is disposed on an upper side in the height direction, and the powder compact is stacked on a lower side in the height direction. The resin molded portion includes a first outer resin portion covering the first composite core.

Abstract: A reactor includes a coil having a wound portion and a magnetic core. The magnetic core includes a first core piece having a molded body of a composite material and a non-magnetic member, the molded body of the composite material contains a magnetic powder and a resin, the non-magnetic member is held by the molded body of the composite material such that the non-magnetic member and the molded body constitute a single piece, the non-magnetic member includes a base portion arranged along an outer peripheral surface of the molded body of the composite material and a protruding piece protruding from the base portion. The protruding piece is inserted into a region of the molded body of the composite material arranged inside of the wound portion so as to intersect an axial direction of the first core piece.

Abstract: A reactor includes a coil including a winding portion; a magnetic core including an inner core portion disposed inside the winding portion and an outer core portion disposed outside the winding portion; and a resin mold portion that covers at least a portion of an outer circumferential surface of the outer core portion, wherein the outer core portion includes a resin core portion made of a composite material including a soft magnetic powder and a resin, and a first through-hole extending through the resin core portion; and a first end and a second end of the first through-hole open to a surface of the outer core portion other than a coil-facing surface that faces the coil, and the resin mold portion is inserted inside the first through-hole.

Abstract: A reactor includes: a coil including a pair of winding portions arranged in parallel via a coupling portion; a magnetic core including inner core portions arranged inside the winding portions and a pair of outer core portions arranged outside the winding portions; a pair of holding members arranged so as to face end faces of the winding portions; and a molded resin portion covering at least a portion of outer peripheral surfaces of the outer core portions and fills spaces between inner peripheral surfaces of the winding portions and the inner core portions. The coil is a single continuous winding wire, the coupling portion is formed by bending back a portion of the winding wire, and one of the holding members on a side on which the coupling portion is arranged includes a recessed portion housing the coupling portion and an inward projection is arranged inside the coupling portion.

Abstract: A reactor includes an assembly formed by assembling a coil and a magnetic core, a case for accommodating the assembly inside, a grip member for sandwiching the assembly from the bottom plate portion side and the opening side inside the case, and a screw member for fixing the grip member to the bottom plate portion by penetrating into the case from outside of the bottom plate portion. The grip member includes a first piece to be held in contact with a surface of the assembly on the opening side, a second piece to be held in contact with a surface of the assembly on the bottom plate portion side, and a third piece connecting the first piece and the second piece in a depth direction of the case.

Abstract: A core piece of the present invention is constituted by a molded body of a composite material in which a soft magnetic powder is dispersed in a resin. The core piece includes an end core portion configured to face an end face of a coil. The end core portion includes a recessed portion provided outside the coil, and a gate mark provided at a bottom portion of the recessed portion. An end face of the gate mark is located inside the recessed portion.

Abstract: A reactor is provided with a coil including a pair of winding portions arranged in parallel, a magnetic core to be arranged inside and outside the winding portions, a case for accommodating an assembly including the coil and the magnetic core, a leaf spring fitting for pressing the assembly toward an inner bottom surface of the case, and a sealing resin portion to be filled into the case. Each of the winding portions is so arranged that an arrangement direction of the winding portions is along a depth direction of the case. The case includes an opening having a rectangular planar shape. The leaf spring fitting is arranged in a state curved toward the inner bottom surface by having both end parts of the leaf spring fitting directly pressed against parts of inner wall surfaces of the case facing each other in a long side direction.

Abstract: A reactor including a coil and a magnetic core, the magnetic core including a first inner core portion, a second inner core portion, a first outer core portion, and a second outer core portion. The reactor includes an inner resin portion and an outer resin portion, and the first outer core portion includes a first inner face that faces the coil, a first outer face on the opposite side to the first inner face, and an outward protruding portion protruding from the first outer face. When viewed from the first outer face side, the outer circumferential contour line of the outward protruding portion is located inside the outer circumferential contour line of the first outer face, and the end face of the outward protruding portion is exposed from the outer resin portion and is flush with the surface of the outer resin portion.

Abstract: A reactor includes a coil having a winding portion; a magnetic core including an inner core portion and an outer core portion disposed outside the winding portion; a resin cover housing at least a portion of the magnetic core; and an adhesive portion filling a gap between an outer circumferential surface of a housing portion of the magnetic core and an inner circumferential surface of the resin cover bonding the housing portion with the resin cover. The resin cover includes: a flange portion having a surface that comes into contact with an end face of the winding portion and a through hole; an outer cover portion having housing portion housing the outer core portion and an abutting portion that contacts a portion of the flange portion; and a protruding portion that forms the gap between an outer circumferential surface of the outer core portion.

Abstract: In this reactor: a coil has a winding part; a magnetic core has a middle-core part, two side-core parts, and two end-core parts; the middle-core part has a portion disposed at the inner side of the winding part; the two side-core parts are disposed side by side with the middlecore part at the outer sides of the winding part; and the two end-core parts are respectively disposed at the outer sides of the ends of the winding part so as to connect the middle-core part and the two side-core parts. The magnetic core has a first region and a second region having a relative permeability higher than that of the first region. The first region has two corners formed from the middle-core part and the two end-core parts. The second region includes a base-end region and a projecting region.

Abstract: A reactor is provided with a coil and a magnetic core. The magnetic core includes a first core and a second core formed into a ? shape by being combined in an X direction. The first core includes a first end core part, at least a part of a middle core part, at least parts of both side core parts including a first side core part and a second side core part. The second core includes a second end core part, a remaining part of the middle core part and remaining parts of the first and second side core parts. Each of the first and second side core parts of the first core has a tip surface. A surface of the second core has facing surfaces facing the tip surfaces. The tip surface has a first chamfered portion.