Abstract: [Problem] Provided is an injection-molded reactor which has a further reduced loss when the reactor is in operation. [Solution Means] The injection-molded reactor is configured by injection-molding a core using a compound for a core so that a coil obtained by winding a electric wire is embedded in the core without leaving any space therein, the compound being a compound obtained by adding a low-melting-point resin B that has a melting point of 150° C. or lower to a base resin A that is a highly heat-resistant resin with a melting point of 150° C.

Abstract: [Problem] Provided is an injection-molded reactor which has excellent heat dissipation properties and in which the internal temperature of the core can be satisfactorily inhibited from rising due to heat generation when the reactor is in operation. [Solution Means] A material for a core obtained by mixing a soft magnetic powder, a resin binder, and a thermally conductive fibrous filler having a higher thermal conductivity than the soft magnetic powder in accordance with X·(soft magnetic powder)+Y·(thermally conductive filler)+(100-X-Y)·(resin binder), wherein X, indicating the proportion of the soft magnetic powder, is 83 to 96% by mass and Y, indicating the proportion of the thermally conductive filler, is 0.2 to 6.8% by mass, is used to mold a core 16 so that a coil 10 obtained by winding an electric wire is embedded therein without an interval, thereby configuring a reactor 15.

Abstract: [Problem] Provided is an injection-molded reactor which has a further reduced loss when the reactor is in operation. [Solution Means] The injection-molded reactor is configured by injection-molding a core using a compound for a core so that a coil obtained by winding a electric wire is embedded in the core without leaving any space therein, the compound being a compound obtained by adding a low-melting-point resin B that has a melting point of 150° C. or lower to a base resin A that is a highly heat-resistant resin with a melting point of 150° C.

Abstract: [Problem] Provided is an injection-molded reactor which has excellent heat dissipation properties and in which the internal temperature of the core can be satisfactorily inhibited from rising due to heat generation when the reactor is in operation. [Solution Means] A material for a core obtained by mixing a soft magnetic powder, a resin binder, and a thermally conductive fibrous filler having a higher thermal conductivity than the soft magnetic powder in accordance with X·(soft magnetic powder)+Y·(thermally conductive filler)+(100-X-Y)·(resin binder), wherein X, indicating the proportion of the soft magnetic powder, is 83 to 96% by mass and Y, indicating the proportion of the thermally conductive filler, is 0.2 to 6.8% by mass, is used to mold a core 16 so that a coil 10 obtained by winding an electric wire is embedded therein without an interval, thereby configuring a reactor 15.

Abstract: [Problem] To provide a method of manufacture for an encased coil body, which is capable of easily manufacturing an encased coil body which is configured so as to be encased in a state where a coil is enclosed within an electrically insulating resin and is also capable of favorably preventing the coil from positional misalignment or deformation at the time of the manufacture.

Abstract: [Problem] When a core is configured by injection-molding a mixture including a soft magnetic powder and a thermoplastic resin and a reactor is manufactured by integrating a coil in a state where the coil is embedded in the inner portion of core, positional misalignment or deformation of coil at the time of molding the core can be effectively prevented, and the core can be favorably molded using an injection molding method. [Solution Means] A reactor 15 is manufactured through a step A of encasing a coil 10 configured by winding a wire in a state where an insulating layer is interposed between the wires with an electrically insulating resin to mold an encased coil body 24, and a step of molding a core 16 by injection-molding a mixture including a soft magnetic powder and a thermoplastic resin in a state where the encased coil body 24 is enclosed.

Abstract: [Problem] To provide a method of manufacture for an encased coil body, which is capable of easily manufacturing an encased coil body which is configured so as to be encased in a state where a coil is enclosed within an electrically insulating resin and is also capable of favorably preventing the coil from positional misalignment or deformation at the time of the manufacture, [Means for Solution] The method includes injection-molding a resin covering layer which encases the coil 10 with a thermoplastic resin, in which the injection-molding is carried out such that the injection-molding step is divided into a primary molding step and a secondary molding step, in which the primary molding step includes contacting a primary molding die to an inner circumferential surface of the coil 10 and molding a primary molded body 22-1 which includes an outer circumferential covering portion 46 in a state where the coil 10 is constrained so as to be positioned in a radial direction, and the secondary molding step includes, a

Abstract: The present invention relates to a process of producing a permanent magnet, which includes extruding a preform to form a plate-shaped permanent magnet, in which the preform is extruded in such a way that a dimension of a cross section of the preform is reduced in an X-direction and enlarged in a Y-direction perpendicular to the X-direction. The present invention also relates to a plate-shaped permanent magnet formed by extruding a preform, in which the preform is extruded in such a way that a dimension of a cross section of the preform is reduced in an X-direction and enlarged in a Y-direction perpendicular to the X-direction, whereby the permanent magnet has a strain ratio ?2/?1 with respect to the preform in a range of 0.2 to 3.5, in which ?1 is a strain in the direction of the extrusion of the preform and ?2 is a strain in the Y-direction.

Abstract: The present invention relates to a process of producing a permanent magnet, which includes extruding a preform to form a plate-shaped permanent magnet, in which the preform is extruded in such a way that a dimension of a cross section of the preform is reduced in an X-direction and enlarged in a Y-direction perpendicular to the X-direction. The present invention also relates to a plate-shaped permanent magnet formed by extruding a preform, in which the preform is extruded in such a way that a dimension of a cross section of the preform is reduced in an X-direction and enlarged in a Y-direction perpendicular to the X-direction, whereby the permanent magnet has a strain ratio ?2/?1 with respect to the preform in a range of 0.2 to 3.5, in which ?1 is a strain in the direction of the extrusion of the preform and ?2 is a strain in the Y-direction.

Abstract: A method for manufacturing a ring-shaped magnet includes arranging, in a penetrating hole formed in a die, a mandrel having a cylinder tip portion of a diameter d1, a cylinder base end portion of a diameter d2, provided d1<d2, and a taper portion positioned between the cylinder tip portion and the cylinder base end portion. The penetrating hole includes a first penetrating hole portion of a diameter D1, a second penetrating hole portion of a diameter D2, provided D1<D2, and a tapered hole portion of a positioned between the first penetrating hole portion and the second penetrating hole portion. The cylinder tip portion is loaded with a preform, and plastic-working is performed on the preform in a gap formed by the penetrating hole and the mandrel by pressing the preform with a pressing punch.

Abstract: A method for manufacturing a ring-shaped magnet material, the method comprising: in a penetrating hole formed in a die, arranging a mandrel having a cylinder tip portion of a diameter d1, a cylinder base end portion of a diameter d2 (provided d1<d2), and a taper portion of a taper angle ?2 positioned between the cylinder tip portion and the cylinder base end portion; loading the cylinder tip portion with a preform from which a ring-shaped magnet material is made, the preform being a circular-ring column shaped body whose inner diameter is d1; and plastic-working the preform in a gap, which the penetrating hole and the mandrel form, by pressing the preform with a pressing punch whose inner diameter is d1 and whose outer diameter is the same as that of the penetrating hole, the manufacturing method providing more freedom for design with respect to the magnetic properties and allowing the ring-shaped magnet material having excellent magnetic properties and high dimension accuracy to be manufactured continuous