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. A relative magnetic permeability of the second core is higher than that of the first core. 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.

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.

Abstract: The magnetic core includes a middle core, a first end core, a second end core, a first side core, and a second side core. At least either the first side core or the second side core includes an inward recessed portion provided in an inward face that faces the first winding portion in a Y direction. In a plan view of the magnetic core from a Z direction, at least a portion of the inward recessed portion is overlapped with a range corresponding to the length of the first winding portion in an X direction. The X direction is a direction conforming to the axial direction of the middle core, the Y direction is a direction in which the middle core, the first side core, and the second side core are side-by-side, and the Z direction is a direction orthogonal to the X direction and the Y direction.

Abstract: This reactor comprises a coil having a first winding part, and a magnetic core, wherein the magnetic core includes a middle core, a first end core, a second end core, a first side core, and a second side core, wherein: the first end core includes a first outer surface at a position separated from the first end face in an X direction, and a first recess provided to the first outer surface; in a plan view of the magnetic core from a Z direction, the first recess is provided in a middle portion of the first end core in a Y direction; the X direction is a direction along the axial direction of the middle core; the Y direction is a direction in which the middle core, the first side core, and the second side core are arranged next to one another; and the Z direction is a direction orthogonal to the X direction and the Y direction.

Abstract: A reactor includes a coil having a winding portion, and a magnetic core including a core piece having an inner core portion disposed inside the winding portion. The core piece is a compact made of a composite material that contains a magnetic powder and a resin. The reactor further includes: a first projection that is integrated with and projects from an outer peripheral face of the inner core portion, and comes into contact with an inner peripheral face of the winding portion so as to position the winding portion in a diameter direction of the winding portion, and a second projection that is integrated with and projects from the core piece at a position opposing an end face of the winding portion, and comes into contact with the end face of the winding portion so as to position the winding portion in an axial direction thereof.

Abstract: A coil includes a first winding portion having a first wire helically wound including at least one strand, and a second winding portion having a second wire helically wound including a plurality of strands electrically connected to the first winding portion and has an axis that is parallel to an axial direction of the first winding portion, wherein the strands included in the second wire are arranged in parallel in an axial direction of the second winding portion, the number of strands included in the second wire is greater than the number of strands included in the first wire, the cross-sectional area of the second wire is equal to or larger than the cross-sectional area of the first wire, and the cross-sectional area of each strand included in the second wire is equal to or smaller than the cross-sectional area of each strand included in the first wire.

Abstract: Provided is a reactor including a coil having a pair of winding portions; and a ring-shaped magnetic core, the magnetic core including: a pair of inner core portions arranged inside of the winding portions; and a pair of outer core portions respectively arranged outside of one end and outside of another end in an axial direction of the winding portions, the reactor including a non-magnetic reinforcing member that is arranged between the pair of winding portions and is coupled to the inner end surfaces of the pair of outer core portions. An axial rigidity of the reinforcing member is 2×107 N/m or more. Here, the axial rigidity is a value obtained by multiplying the cross-sectional area of the reinforcing member perpendicular to the axial direction of the winding portions and the Young's modulus of the reinforcing member, and dividing the result by the length of the reinforcing member.

Abstract: Provided is a reactor that can prevent a short circuit from occurring between turns of a coil even if a foreign object is present between turns. The reactor includes: an edgewise coil formed by a flat rectangular wire; a magnetic core; and a molded resin part that covers at least a portion of the magnetic core, wherein the edgewise coil includes a plurality of turns configured to form a rectangular shape, each of the plurality of turns includes four straight portions, and four curved corner portions that connect the adjacent straight portions to each other, each of the four corner portions includes an outer region in which a gap is provided between the adjacent turns, and the molded resin part is present in at least two of the gaps that are diagonally opposite to each other.

Abstract: A reactor including: a coil having a winding portion; a magnetic core that is disposed extending inside and outside the winding portion, and is configured to form a closed magnetic circuit; and a resin mold that includes an inner resin disposed between the winding portion and the magnetic core, and does not cover an outer peripheral face of the winding portion.

Abstract: A reactor including: a coil having a wound portion; a magnetic core that is disposed inside and outside the wound portion and forms a closed magnetic circuit; and a resin mold that includes an inner resin disposed between the wound portion and the magnetic core, and does not cover an outer-peripheral face of the wound portion.

Abstract: Provided is a reactor including: a coil having wound portions; and a magnetic core including core pieces having inner core portions arranged inside of the wound portions. The core pieces are molded bodies of a composite material including a magnetic powder and a resin, and the reactor includes: projections that are integrally molded with and protrude from outer peripheral surfaces of the inner core portions, and that position the wound portions in radial directions by coming into contact with inner peripheral surfaces of the wound portions; and inner resin portions that fill spaces between the inner peripheral surfaces of the wound portions and the outer peripheral surfaces of the inner core portions excluding the projections.

Abstract: A reactor including: a coil having a winding portion; a magnetic core that is disposed extending inside and outside the winding portion, and is configured to form a closed magnetic circuit; and a resin mold that includes an inner resin disposed between the winding portion and the magnetic core, and does not cover an outer peripheral face of the winding portion.

Abstract: A reactor including: a coil having a wound portion; a magnetic core that includes an inner core disposed in the wound portion, the magnetic core forming a closed magnetic circuit; and a resin mold including an inner resin that is interposed between the wound portion and the inner core, and at least partially covers the inner core, the resin mold not covering an outer-peripheral face of the wound portion.

Abstract: Provided is a reactor including: a coil including two wound portions obtained by winding a winding wire; and a magnetic core in which the wound portions are arranged. The magnetic core includes: inner leg portions arranged inside the inner peripheries of the wound portions; a central leg portion provided between the wound portions; two outer leg portions that are provided outside the outer peripheries of the wound portions and between which the inner leg portions and the central leg portion are provided; and two coupling portions between which the inner leg portions, the central leg portion, and the outer leg portions, which are arranged in parallel, are sandwiched and with which these portions are coupled.

Abstract: Provided is a reactor including a coil provided with two winding portions that are obtained by winding a winding wire such that axes of the winding portions are parallel to each other, and a magnetic core including a rectangular parallelepiped inner core portion disposed in each of the winding portions, and outer core portions that are disposed outside the winding portions and are for linking the inner core portions, in which at least one of two outer corner portions out of four corner portions of each of the inner core portions includes a corner chamfering portion that has been chamfered more than an inner corner portion that is opposite the outer corner portion, the four corner portions facing an inner circumferential surface of the winding portion and the two outer corner portions being disposed on the side of each winding portion that is distant from the other winding portion.

Abstract: A reactor includes a coil including wound portions; and a magnetic core that includes a set of core pieces that engage with each other and is arranged inside and outside of the wound portions. One core piece includes, at an end portion thereof, a recessed portion having a ring-shaped opening edge that is open toward the other core piece. The other core piece includes, at an end portion thereof, a protruding portion that is configured to be fit into the recessed portion. Both of the core pieces include, in the wound portions, ring-shaped contact portions that are provided along the opening edges and at which the core pieces come into surface contact with each other, and gap portions formed by non-contact regions in which the inner peripheral surfaces forming the recessed portions and the outer peripheral surfaces of the protruding portions are not in contact with each other.