Sumitomo Electric Industries, Limited

Sumitomo Wiring Systems, Limited

Autonetworks Technologies, Limited

Kohei Yoshikawa

Takehito Kobayashi

Seiji Shitama

Naotoshi Furukawa

Takashi Misaki

Kazuhiro Inaba

Shinichiro Yamamoto

Akinori Ooishi

Hajime Kawaguchi

Tatsuo Hirabayashi

Masatoshi Koike

Junji Ido

Masaya Murashita

Yoshiki Numazawa

A reactor is provided with a coil including one winding portion, a magnetic core, a resin member for specifying mutual positions of the coil and the magnetic core, a case for accommodating an assembly including the coil, the magnetic core and the resin member, and a sealing resin portion to be filled into the case. The magnetic core includes a middle core portion to be arranged inside the winding portion, two side core portions to be arranged in parallel to the middle core portion outside the winding portion, and two end core portions connecting the middle core portion and the side core portions on both end parts of the winding portion. The case includes a side wall portion in the form of a rectangular frame for surrounding the assembly. The side wall portion includes a pair of long side parts and a pair of short side parts.

Reactor, converter and power conversion device

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 holding member for specifying mutual positions of the coil and the magnetic core, a case for accommodating an assembly including the coil, the magnetic core and the holding member, and a sealing resin portion to be filled into the case. The case includes a bottom plate portion, the assembly being placed on the bottom plate portion, a side wall portion for surrounding the assembly, and an opening facing the bottom plate portion. The assembly is so accommodated into the case that an axial direction of each winding portion is along a depth direction of the case. The magnetic core includes an outer core portion to be arranged outside the winding portions and on the opening side.

Reactor

A reactor is provided with a coil including a pair of winding portions, a magnetic core to be arranged inside and outside the winding portions, a holding member for specifying mutual positions of the coil and the magnetic core, a case for accommodating an assembly including the coil, the magnetic core and the holding member, and a sealing resin portion to be filled into the case. The case includes a bottom plate portion on which the assembly is placed, a side wall portion for surrounding the assembly, and an opening facing the bottom plate portion. The side wall portion includes a pair of long side parts facing each other and a pair of short side parts facing each other. The assembly is so accommodated into the case that an axial direction of each winding portion is along a depth direction of the case.

A reactor includes an assembly of a coil and a magnetic core, a case for accommodating the assembly inside, a sealing resin portion for at least partially sealing the assembly by being filled into the case, and a supporting portion to be fixed to the case in a cantilever manner. The case includes a bottom plate portion, and a side wall portion. The side wall portion includes a pair of short side portions and a pair of long side portions having different lengths along a circumferential direction of the case. The supporting portion includes a fixed end to be fixed to an end surface of the short side portion of the side wall portion, an overlapping region configured to overlap the outer core portion from above, and a free end not to be fixed to the case.

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, and a sealing resin portion to be filled into the case. The case includes a bottom plate portion on which the assembly is placed, a side wall portion for surrounding the assembly, and an opening facing the bottom plate portion and having a rectangular planar shape. The pair of winding portions are so arranged that a parallel direction is orthogonal to the bottom plate portion. The reactor includes a supporting member to be arranged along a short side direction of the opening. The supporting member includes end portions to be stopped in contact with facing inner surfaces of the side wall portion.

A reactor includes a coil having a winding portion, a magnetic core, and a holding member holding an end surface of the winding portion and the outer core portion of the magnetic core, the holding member having a through hole into which an end portion of the inner core portion of the magnetic core is inserted. One of the inner core portion and the outer core portion is a hybrid core composed of a powder compact and a resin core molded on an outer periphery of the powder compact, and the other of the inner core portion and the outer core portion is a hybrid core or a resin core. The resin core of the inner core portion and the resin core of the outer core portion are continuous with each other via the through hole of the holding member so as to form a seamless single body.

A reactor is provided with a coil including a winding portion, and a magnetic core including an inner core portion to be arranged inside the winding portion and an outer core portion to be arranged outside the winding portion. The magnetic core includes a communication hole penetrating through the outer core portion and leading to the inner core portion, and a coupling shaft made of a composite material filled into the communication hole and coupling the inner core portion and the outer core portion. The composite material is obtained by dispersing a soft magnetic powder in a resin.

A reactor is provided with a coil including a pair of winding portions arranged in parallel, a magnetic core, a case for accommodating an assembly including the coil and the magnetic core, and a sealing resin portion to be filled into the case. The case includes a bottom plate portion, the assembly being placed on the bottom plate portion, a side wall portion constituted by a rectangular frame body for surrounding the assembly, and an opening provided on a side opposite to the bottom plate portion. The pair of winding portions are is orthogonal to the bottom plate portion. The side wall portion includes a pair of short side portions and a pair of long side portions. The short side portion or the long side portion includes a groove portion continuously provided from the opening side toward the bottom plate portion side and open inward of the case.

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.

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.

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.

A reactor includes a coil having a winding portion; a magnetic core; and a case. The magnetic core includes a plurality of core pieces forming a closed magnetic circuit. The core pieces include two outer core pieces having a portion disposed outside the winding portion. The case includes a first and a second opposing faces are respectively opposed to outer edge faces of the outer core pieces, and a case inclined surface provided on at least one of the first and the second opposing faces. The case inclined surface is inclined such that a distance between the first opposing face and the second opposing face decreases from an opening side of the case toward an inner bottom face of the case, and a core inclined surface on the outer edge face side of the outer core piece is in surface contact with the case inclined surface.

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.

A reactor includes: a coil; a magnetic core arranged inside of the wound portion and an outer core portion arranged outside of the wound portion; and a resin molded portion. An interval between the wound portion and the inner core portion differs in a peripheral direction of the wound portion. The reactor includes an electrically insulating material that is interposed in a location at which the interval is the narrowest, and a thick portion that is interposed in a location at which the interval is the widest and forms a portion of the inner resin portion. The proportion of the interval of the narrowest location with respect to the thermal conductivity is less than the proportion of the interval with respect to the thermal conductivity.

A reactor includes a coil, a magnetic core, and a holding member holding an end face of the wound part in an axial direction and an outer core part of the magnetic core. The holding member is a frame-shaped body having a through hole into which an end portion of the inner core part is inserted. The outer core part has an inward surface opposing the inner core part, an outward surface on an opposite side to the inward surface, and a plurality of peripheral surfaces joining between the inward surface and the outward surface. The reactor includes a core coupling member, coupling the outer core part and the inner core part, having a supporting piece supporting the outward surface of the outer core part, and an engaging leg piece having a distal end engaging a peripheral surface engaging part formed on a peripheral surface of the inner core part.

Growing community of inventors

Mie, Japan

Kohei Yoshikawa