Abstract: A magnetic core (10) is provided with a flange portion (12) protruding outward a winding core portion (11) in a radial direction perpendicular to a center axis (19) of the winding core portion. The winding core portion has an outer peripheral surface (11a) which surrounds the center axis to have a first distance (d1) therebetween. The flange portion is provided with a permanent magnet (15) apart from the center axis by a second distance (d2) greater than the first distance.

Abstract: In a magnetic core for a non-contact displacement sensor comprising a detecting coil, a coil receiving member and a terminal, the coil receiving member is comprised of a green compact made of insulated soft magnetic powder and an insulating layer covering the green compact, and an organic resin is filled in a closed space of the coil receiving member.

Abstract: An ignition system for igniting fuel in a gas turbine or diesel engine is described. The system includes a magnetic core-coil assembly having a magnetic core comprising at least one tape wound toroid of ferromagnetic amorphous metal alloy, a primary winding and a secondary winding. Also included are driver electronics for applying voltage to a spark plug to cause a spark to ignite the fuel. The core-coil assembly and driver electronics are capable of operating with a rapid charge and discharge cycle to produce a high spark pulse rate. In another aspect, a magnetic core-coil assembly is disclosed which has a magnetic core comprising at least one tape wound toroid of ferromagnetic amorphous metal alloy having a permeability ranging from about 250 to 500, a primary winding for low voltage excitation and a secondary winding for high voltage output.

Abstract: An ignition apparatus includes a high voltage (HV) terminal formed of stamped sheet metal attached to a secondary winding spool, and to which a high voltage end of the secondary winding is soldered. The ignition apparatus further includes an electrically conductive cup formed of stamped aluminum or brass that is disposed in a case and is configured to receive the high voltage terminal when the secondary winding spool is inserted in the case. The high voltage terminal has a spring tab or the like that is biased radially outwardly into engagement with an inner annular surface of the cup. A bottom outer surface of the cup is arranged to be engaged by a high voltage spring or the like for making the connection to the spark plug. The cup is substantially free of burrs, sharp edges, and the like, and therefore reduces localized occurrences of high electric field concentrations, which could otherwise lead to insulating material, and thus ignition coil, failure.

Abstract: A case for a noise absorber including a first case member and a second case member. The first case member includes a first cable guide and a second cable guide at opposite sides and a first core housing provided therebetween. The second case member includes a third cable guide and a fourth cable guide at opposite sides and a second core housing provided therebetween. The first case member and the second case member are interlocked and a hinge arrangement movably connects one of the sides of the first case member with one of the sides of the second case member. A magnetic core having a cable through passage can be housed inside the case to provide a noise absorber.

Abstract: A device for electrically interconnecting and packaging electronic components. A non-conducting base member having a component recess and a plurality of specially shaped lead channels formed therein is provided. At least one electronic component is disposed within the recess, and the wire leads of the component are routed through the lead channels. A plurality of lead terminals, adapted to cooperate with the specially shaped lead channels, are received within the lead channels, thereby forming an electrical connection between the lead terminals and the wire leads of the electronic component(s). The special shaping of the lead channels and lead terminals restricts the movement of the lead terminals within the lead channels in multiple directions during package fabrication, thereby allowing for the manufacture of larger, more reliable devices.

Abstract: An electric noise absorber for preventing looseness of magnetic body parts in a closed housing, without increasing the number of parts or decreasing the strength of the housing. The housing comprises a pair of case halves which house ferrite core halves, respectively, and are hinged to each other. The bottom wall of each case half is formed with a curved shape convex toward the space housing the ferrite core half. When the case halves are closed with the ferrite cores therein, the ferrite cores press each other toward respective bottom walls and resiliently deform the walls. The resilience of the deformed bottom walls urges abutting surfaces of the ferrite cores into close contact.

Abstract: An ignition coil for motor vehicles with a single output terminal comprises a body (16) carrying at one of its ends a flexible cap (18) provided with a seat (24) designed to receive an end (10) of a spark plug. The cap (18) comprises a high-voltage terminal (38, 40) electrically connected to the high-voltage winding of the coil and provided with a connection portion designed to receive a terminal (14) of the plug (10). A diode (26) is housed inside said cap (18) and is connected in series between two portions (38, 40) of said high-voltage terminal.

Abstract: A noise filter is provided with a cylindrical ferrite core having a wire insertion through-hole, the ferrite core being received within a case. A wire passing once through the wire insertion through-hole is looped to surround an exterior of the case and passes back through the wire insertion through-hole. A wire fixing portion is provided on the outer surface of the case so as to hold and fix a portion of the wire to the exterior of the case. The wire fixing portion includes a pressing surface and a pressing portion that faces the pressing surface, and the pressing portion is opened from and closed toward the pressing surface. Thus, the noise filter is prevented from displacement or sliding on the wire. Further, a method of mounting the noise filter on the wire is provided.

Abstract: A coil part which is obtained by sealing at least part of the periphery of a coil with a conductor wound on a bobbin with a high heat-conductive and magnetism-impermeable resin composition, and can efficiently guide out a magnetic flux generated to the outside and efficiently radiate heat generated to the outside.

Abstract: An ignition coil which directly distributes the high voltage to an ignition plug, includes a case, a central iron core, a secondary coil in which a secondary copper wire is coaxially wound around the central iron core, being housed in the case, a primary coil in which a primary copper wire is wound around the outside of the case, and a sheath iron core arranged outside the primary coil.

Abstract: An ignition coil assembly is disclosed for a spark plug of the type used in internal combustion engines. The ignition assembly includes a housing, a tubular and cylindrical primary coil, and a tubular and cylindrical secondary coil. The primary and secondary coils are each wound on their individual bobbins and the bobbins are mounted in the housing such that the primary coil is coaxially positioned inside the secondary coil. The ignition coil assembly further includes a magnetic core having a first portion which extends through the interior of both the primary and secondary coil and a second portion which extends exteriorly of the primary and secondary coils. The first portion of the coil is substantially circular in cross sectional shape thus matching the circular interior of the primary bobbin. In order to construct the primary coil and secondary coil subassembly, the primary bobbin is first positioned on a winding machine and the primary wire is wound on the bobbin.

Abstract: An ignition apparatus includes a suppression device comprising a suppression winding that is in series with the secondary winding and is further located outside of a magnetic circuit. The suppression winding is made from the same wire as used in the secondary winding and is wound on a reduced diameter portion of a secondary winding spool. A carbon resistor is disposed in series with the suppression winding in another embodiment. Nickel wire may be substituted for the suppression winding and carbon resistor in order to obtain both inductance and resistance characteristics for the suppression device.

Abstract: An inductive sensor for measuring a current in a conductor includes a generally annular winding (10) delimiting a passage for the conductor. The winding extends homogeneously over most of the circumference of a ring except for a section (20) where the winding has a structural discontinuity. The sensor includes at least one identical complementary winding (12). The windings (10, 12) are disposed coaxially and oriented so that the structural discontinuities of the windings are regularly distributed in the angular direction about the common axis of the windings. The windings are connected in series.

Abstract: Noise absorbers (11), which comprise two casing halves (16,17) foldable together around a cable and containing ferrite half-rings, are fixed to a cable (13) in that, prior to the closing of the casing halves, the cable is pressed between two parallel fixing edges (34) of a fork-like projection (32) on one casing end wall (21). The two legs (33) of the fork project over the casing parting line (27), but pass in front of the end wall (21) of the second casing half (17). The cable is laterally compressed somewhat by the substantially parallel faxing edges (34), which ensures a reliable longitudinal fixing to the cable, which does not damage the latter, of the noise absorber made relatively heavy by the elements. Assembly is significantly facilitated in that the definitive fixing takes place prior to the closing of the casing halves and following the folding together of the casing halves no elastic bursting force remains, which attempts to force apart said casing halves.

Abstract: A transformer including a bobbin formed by uniting a winding member, which has a primary winding and secondary winding and a bore formed thereon and therein, with a primary winding fixture and secondary winding fixture adjoining the openings of the bore, and a ferromagnetic core having a core portion thereof inserted into the bore and including an enclosure for enclosing the windings is manufactured according to a process including an affixing step of firmly affixing both or either of the primary winding fixture and secondary winding fixture to the ferromagnetic core, an impregnation step of impregnating the transformer with a varnish, and an applying step of applying adhesives.

Abstract: A transformer includes a tank having a side wall, a core defining a core window, and a pair of coils, each of which surrounds a portion of the core and includes a portion passing through the core window. The transformer further includes a core and coil support member that extends through the core window to support the core and coils. The core and coil support member includes an upper flange and a lower flange, each flange having a channel formed along an outer surface of the flange that conforms in shape to an inner surface of the core. The core and coil support member includes a web that extends between and connects the upper and lower flanges, the web including first and second ends that extend out from the flanges. The transformer includes a support bracket that attaches to the side wall of the tank, and centers and supports the core and coil support member. The support bracket includes three sides that define a channel through which an end of the core and coil member extends.

Abstract: The subject of the invention is an ignition coil, of the type intended to be mounted on a spark plug for the individual electrical supply of this spark plug, comprising an internal secondary winding (2), an external primary winding, a flux return shell (9) and a casing (4). According to the invention, the said casing (4) surrounds only the secondary winding, the primary winding being wound onto the casing, on the outside of the latter; and being itself surrounded by the flux return shell.

Abstract: An electrical noise suppressing device has a pair of parallel first connecting terminals connectable to terminals of a motor and a pair of parallel second connecting terminals connectable to an external power source. The first connecting terminals and the second connecting terminals are raised on opposite surfaces of an insulating plate, respectively, at the same position of the insulating plate. A pair of choke coils and a capacitor are disposed between and connected to the second connecting terminals to suppress electrical noise.

Abstract: A device for absorbing the electric noise on a cable contains a casing formed from two halves, in each of whose halves can be fixed a ferrite element. The two ferrite elements enclose the cable with the casing closed. A locking device keeps the two casing halves interconnected. The locking device is entirely housed within the casing walls, so that the casing cannot be unintentionally opened.

Abstract: An inductor operable under various supply voltages includes a first coil, a second coil, a bobbin and a core, wherein the coil diameter of the first coil is larger than the coil diameter of the second coil and the first and the second coils are connected in series, whereby input electric current flows through one coil selected from said first and second coils by utilizing a selecting switch, so as to generate sufficient corresponding inductance according to various input supply voltages.

Abstract: A device for electrically interconnecting and packaging electronic components. A non-conducting base member having a component recess and a plurality of specially shaped lead channels formed therein is provided. At least one electronic component is disposed within the recess, and the wire leads of the component routed through the lead channels. A plurality of lead terminals, adapted to cooperate with the specially shaped lead channels, are received within the lead channels, thereby forming an electrical connection between the lead terminals and the wire leads of the electronic component(s). The special shaping of the lead channels and lead terminals restricts the movement of the lead terminals within the lead channels in multiple directions during package fabrication, thereby allowing for the manufacture of larger, more reliable devices.

Abstract: An angular pin is used in a connecting portion of each component, and a plated copper wire for electrical connection of the component is wound at several turns around the angular pin.

Abstract: An apparatus and method for releasable securement together of a transformer power supply assembly together which includes a stacked arrangement (20) of a first transformer core plate (28) positioned to overlie a circuit board (26), a second transformer core plate (24) positioned to underlie the first transformer core plate (28) and the circuit board (26) and a carrier member (22) positioned beneath the second transformer core plate (24), the first and second transformer core plates (28,24) contact one another through at least one opening positioned in the circuit board (26). The apparatus includes having a body positioned over the first transformer core plate (28) in which the body of the span member (32) extends over a surface of the first transformer core plate (28) and extends from a portion of a peripheral edge of the first transformer core plate (28) to another portion of the peripheral edge of the first transformer core plate (28).

Abstract: An inductance device according to the present invention, which is for use in power supply units, is constructed in such a manner that a slit 3 is provided in one side of a polygonal cylindrical ferrite core 1 in the same direction to a hollow portion 2 to form an open magnetic path, and a belt-like conductor 4 is inserted through the hollow portion 2, so as to minimize the dimensions, have an inductance value not more than 1 &mgr;H, and hold DC overlapping characteristic flat even if high current flows.

Abstract: A split ferrite core including first and second split ferrite cores. The first split ferrite core body includes first and second leg portions, and the first leg portion is vertical with respect to the second leg portion. The second split ferrite core body includes third and forth leg portions, and the third leg portion is vertical with respect to the forth leg portion. The first leg portion of the first split ferrite core body abuts against the forth leg portion of second split ferrite core body, and the second leg portion of the first split ferrite core body abuts against the third leg portion of second split ferrite core body.

Abstract: An electrically conductive wire wound into a conical coil 1 with leads from the small and large ends of the coil. The coil is filled with fine-grained magnetic material 11, and is mounted in a thin-walled, electrically non-conductive carrier 21 designed for precise automated assembly onto a circuit board 15. The wire leads are plastic-welded onto the carrier, and no metallic pads are used, greatly increasing the effective bandwidth of the choke. The small end 4 of the coil is positioned precisely on a micro-strip 17 on the circuit board. Attachment of the wire lead from the small end of the coil to the microstrip is done with minimum lead length and minimum conductive material for the highest possible frequency response. Precise coil positioning, minimal lead length, and a totally non-conductive carrier virtually eliminates electrical reflections and resonances to yield a broadband choke with exceptional frequency range.

Abstract: In a stick-type ignition coil device for engines, a primary spool is disposed outside a secondary coil. The primary spool is made of PBT (polybuthylene telephthalate) having a low melting viscosity and a high flowability as a resin base material. The resin base material is admixed with an olefin rubber in 5 wt. %, glass fibers in 12.5 wt. % and silica in 12.5 wt. %. A primary coil 24 comprises a wire body coated with PET (polyethylene telephthalate), silicone or wax as a separating member, and is wound around the primary spool. The growth of trees in the primary spool 23 restricted even when electrical discharges occur between a secondary coil and the primary coil and the primary spool is eroded by the electrical discharges, because silica is added in the primary spool.

Abstract: A noise-suppressing component includes a ring-shaped ceramic core and an insulating member with which the surface of the ring-shaped ceramic core is coated having magnetic powder. Ceramic ferrite having an initial magnetic permeability of approximately 50 to 1500, for example, is used for the ring-shaped ceramic core. Resin including magnetic powder having an initial magnetic permeability of approximately 2 to 50 or rubber including the magnetic powder, for example, is used for the insulating member having the magnetic powder. The insulating member having the magnetic powder includes magnetic powder having an average particle diameter of approximately 1 to 1000 &mgr;m and has a magnetic-powder content of approximately 20 to 70 percent by volume.

Abstract: An ignition coil for motor vehicles, comprising:

Abstract: The invention provides a noise elimination device that can be installed easily on a coaxial cable and that can effectively eliminate noise from both the center conductor and the outer conductor. Coaxial connectors 2 and 3 are provided on both ends of a tube-shaped housing 1 made of an insulator, and a coil made by winding a coaxial cable of thin diameter is around an open magnetic ferrite core is disposed inside the housing 1 and connected to the connectors 2 and 3 at the two ends. The earth-side connector thickness of the outer conductor of the coaxial cable and the connector as well as all earth-side conductors, such as shield members 7 connecting the connectors with the outer conductors of the coaxial cable, is at least 0.1 mm.

Abstract: The rod ignition transformer including an integrated low-voltage connector to the on-board network supply, and an integrated high-voltage connector to the spark plug, both accommodated in a housing. In the housing, the primary coil and the secondary coil surround a central core comprising a ferromagnetic powder composite material. A magnetic feedback member is formed from a highly-permeable magnetic material having low eddy current losses. The magnetic feedback member preferably is formed from ferrite.

Abstract: An electric noise absorber for preventing looseness of magnetic body parts in a closed housing, without increasing the number of parts or decreasing the strength of the housing. The housing comprises a pair of case halves which house ferrite core halves, respectively, and are hinged to each other. The bottom wall of each case half is formed with a curved shape convex toward the space housing the ferrite core half. When the case halves are closed with the ferrite cores therein, the ferrite cores press each other toward respective bottom walls and resiliently deform the walls. The resilience of the deformed bottom walls urges abutting surfaces of the ferrite cores into close contact.

Abstract: A U-shaped metal member for securing a circuit component to a circuit board in place of conventional screws and nuts. The element is inserted through aligned holes of the component and the board and is wave soldered to the board for permanent securement.

Abstract: A ferrite-core housing case 20 has a first split case half 21, and a second split case half 22 that is openable with respect to the first split case half 22, and houses a ferrite core 1 for a flat cable. A pair of spring portions 27 which press the ferrite core 1 are formed in at least one of the first and second split case halves 21 and 22, and a fulcrum of each of the spring portions 27 is located on a side face 22b of the split case half while an acting point is located on a center side.

Abstract: A device for absorbing electrical noise in a cable contains two ferrite cores, each of which is housed in a casing half-shell. The two casing half-shells are placed with the ferrite cores around a cable such that a cylindrical passage is formed. The casing half-shells include semicylindrical webs, which fit into grooves in the ferrite cores. The casing half-shells have a tongue on one of the half-shells and a ratchet member on another of the half-shells to provide an adjustable closure to accommodate variance in the dimensions of the ferrite cores.

Abstract: A data carrier has a chip with chip contacts, a transmission coil for contactless communication with a write/read station, a metal lead frame with a chip carrying part and contact forming parts, and a chip cover made of electrically insulating material. The transmission coil has coil contacts. The chip cover has a first cover part covering the chip at one side of the metal lead frame and a second cover part covering the other side of the metal lead frame. The second cover part has electrically conducting passages electrically connecting the coil contacts to the contact forming parts that are otherwise connected to the chip contacts. The chip carrying part and the first and second contact forming parts are electrically insulated with respect to each other and are arranged in a substantially coplanar relationship to each other.

Abstract: An electric noise absorber for clamping to a cord of an electronic device comprises a holding case composed of two box-shaped case members. Each case member contains a magnet having a hemi-cylindrical groove at the upper part of the magnet for receiving the cord. It is possible to easily and securely attach and detach the electric noise absorbing magnet to the cord by simply closing and opening the case members.

Abstract: A method of manufacturing an inductive element for SMD applications comprises the following steps: a) providing a number of predominantly parallel electroconductive wires in the mould of an injection-moulding device, b) circumferentially providing a part of the wires with a synthetic resin by injection moulding, in such a manner that the ends of the wires remain free, c) providing an envelope of a soft-magnetic material around the circumferentially injection moulded part of the wires, and d) reshaping the ends of the wires. The parts of the wires to be circumferentially injection moulded are fixed inside the mould during the injection moulding process. The element generates optimally homogeneous magnetic fields. Also the risk of electric short-circuits is small.

Abstract: A device for measuring and calibrating the strength of magnetic fields is provided. The device includes a coil of wire and either conductive pads or an ammeter/voltmeter attached to the coil of wire. The coil is disposed in the interior of a housing, and a locator window is formed in the housing in a position internal to the coil. The locator window allows the user to see through the device and thus position the device properly with respect to the source of the magnetic field. Preferably, a microprocessor is provided which converts a value of voltage or current induced in the coil into a value of magnetic field strength. The microprocessor transmits the value of magnetic field strength to the display.

Abstract: A high voltage post terminal is accurately located within a support aperture during manufacturing processes by at least one inwardly directed projection to avoid assembly problems caused by sizing the entire aperture itself to locate the terminal with sufficient accuracy. By thus improving the concentricity of the high voltage coil components it is possible to achieve more reliable insulation between components at even relatively small-sized coils used for individual engine plug holes. An especially advantageous range of critical parameters has been discovered as achievable by using this more reliable manufacturing process.

Abstract: An expandable transformer housing having a first housing member with a hollow cavity therein, a second housing member with a hollow cavity therein, and at least one exterior insert member therebetween in a stacked formation. The exterior insert member has a first end and a second end. A portion of the first end of the exterior insert member is adapted to engage the first housing member and a portion of the second end of the insert member is adapted to engage the second housing member. An interior insert member is also provided having a first end and a second end. A portion of the first end of the interior insert member is similarly adapted to engage the first housing member and a portion of the second end of the interior insert member is adapted to engage the second housing member. The interior insert provides insulation between the current source and the second windings of the transformer.

Abstract: A thin electrically conductive wire wound into a conical coil 1 with leads from the small and large ends of the coil. The coil is filled with powdered iron 11, and is mounted in a thin-walled, completely non-conductive, leadless carrier 21 for ease of assembly onto a circuit board 15. The small end 4 of the coil is positioned precisely on a micro-strip 17 on the circuit board to provide maximum bandwidth. The coil is held by the carrier at an angle such that the large end of the coil is displaced from the circuit board by a distance D of at least half the radius of the large end of the coil. Attachment of the leads from the small and large ends of the coil to respective contacts on the circuit board is done with minimum lead length, minimum conductive material, and without the use of metallic pads on the carrier, to yield the highest possible frequency response.

Abstract: An advanced microelectronic component package incorporating a specially shaped base element which holds and electrically separates the individual conductors associated with the microelectronic component(s) so that the individual conductors may be bonded to external package leads and other conductors within the package. In a first embodiment, jacketed, insulated wire is used as one winding of a toroidal transformer, while unjacketed insulated wire is used as another winding. The jacketing is stripped from the first winding and the exposed conductors are routed into channels along the sides of the base element. The unjacketed conductors are also routed into the same channels, where both conductors are bonded to the external package leads. Raised elements along the sides of the base provide the required electrical separation between the conductors during both manufacture and operation. A method of manufacturing the improved microelectronic package is also disclosed.

Abstract: A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The inner circumferential corners of the outer core is supported by ring members. Some of the members disposed radially inside and other members disposed radially outside of the inside members are held slidably to each other in the ignition coil. The spools are made of resin containing a rubber in excess of 5 weight percent and reinforcing materials. The resin insulator contains a flexible material.

Abstract: An ignition coil that can be easily assembled, that assures co-axial alignment of a primary coil, a secondary coil and a center core part, and that generates desired high voltage. A core body is formed to have an outer diameter larger than that of a permanent magnet so that the permanent magnet will not protrude out of the outer peripheral face of the core body. Accordingly, when the center core part is inserted into a secondary spool, the center core part is not caught by the secondary spool and may be readily inserted and assembled therewith. Also, because no bulge is created at the center core part, it is possible to prevent the center core part from tilting within the secondary spool and to readily assure the co-axial alignment of the primary spool, the secondary spool and the center core part. Thus, voltage generated by the secondary coil is prevented from dropping, and high voltage may be applied to the ignition plug.

Abstract: An ignition coil assembly module (40) that can be connected to and disconnected from an engine spark plug. The module elements are arranged as a succession of cylindrical layers about a central ferromagnetic core (46). From innermost to outermost, the succession is: a) a secondary bobbin (48), b) a secondary coil (58), c) a secondary encapsulant (194) encapsulating the secondary coil, d) a primary bobbin (50), e) a primary coil (56), f) an inner wall (181) of an environmental shield (42) encapsulating the primary coil, g) a ferromagnetic shell (52), and h) an outer wall (180) of the environmental shield encapsulating the shell. The primary bobbin forms a liquid container for holding secondary coil encapsulant. A terminal (100) extends through a transverse wall (71) of the primary bobbin for carrying secondary current from the secondary coil to another terminal (118) on the other side of the transverse wall that connects to a spark plug (80).

Abstract: An inductor assembly is disclosed for protecting electronic circuitry in a downhole equipment string. The inductor assembly includes a plurality of modular inductors coupled to one another in series to provide the desired inductance. The modular inductors are supported by a support structure in a protective housing, such as in a common housing with the electronic circuitry. The inductor assembly is electrically isolated from the housing. The support structure may include insulative end members and rail members extending between the end members to which the inductors are secured. One or more insulative covers are provided around the inductors to further isolate the inductors from the housing. The inductor assembly dissipates energy in the event of certain failure modes of power supply circuitry or lines extending from the earth's surface. The inductor may be secured electrically between a neutral node in a Y-wound motor to prevent high voltage ac waveforms from damaging the electronic circuitry.

Abstract: An electric noise absorber provided with first, second and third magnetic body parts in first, second and third housing sections, respectively. Grooves are provided to form a first hollow in which an electric wire is placed between the first and second magnetic body parts when the magnetic body parts are connected by abutting faces. Moreover, grooves are provided to form a second hollow in which an electric wire is placed between the second and third magnetic body parts when the magnetic body parts are connected by abutting faces. The electric wire is wound desired times around the second housing section with the second magnetic body housed therein along the grooves in the opposite faces of the second magnetic body, and the first and third housing sections are closed, so that the electric noises flowing through the electric wire can effectively be absorbed.

Abstract: A chip inductor of a sealed type having a square-shaped winding comprises a bobbin for winding, which has a square-shaped flange on its both ends, and a metal terminal sticking out from the outer side surface of each respective flange and each respective metal terminal being bent inside each respective flange upward so as to stick out to the upper side surface of the flange, also have the foregoing metal terminal further bent along the upper side surface of the flange, and further make insert-molding of the foregoing bent terminal possible to form the bobbin for winding.