Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F27/00—Details of transformers or inductances, in general
  • H01F27/28—Coils; Windings; Conductive connections
  • H01F27/29—Terminals; Tapping arrangements for signal inductances
  • H01F27/292—Surface mounted devices
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F27/00—Details of transformers or inductances, in general
  • H01F27/02—Casings
  • H01F27/027—Casings specially adapted for combination of signal type inductors or transformers with electronic circuits, e.g. mounting on printed circuit boards
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
  • H01F17/00—Fixed inductances of the signal type
  • H01F17/04—Fixed inductances of the signal type with magnetic core
  • H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
  • H01F2017/046—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core helical coil made of flat wire, e.g. with smaller extension of wire cross section in the direction of the longitudinal axis
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
  • H05K3/00—Apparatus or processes for manufacturing printed circuits
  • H05K3/30—Assembling printed circuits with electric components, e.g. with resistors
  • H05K3/32—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits
  • H05K3/34—Assembling printed circuits with electric components, e.g. with resistors electrically connecting electric components or wires to printed circuits by soldering
  • H05K3/341—Surface mounted components
  • H05K3/3421—Leaded components
  • H05K3/3426—Leaded components characterised by the leads

Definitions

• the present invention relates to an inductor used for various devices mounted on a vehicle, for example.
• Powerful on-board inductors in which various inductors are mounted with an inductor include a core wound with a winding, and if necessary, the core and the winding are covered with a case or the like.
• a type in which a terminal of a winding is mounted by flow soldering or the like is known.
• the inductors there is also a horizontal type inductor in which the winding axis is attached in a state of being parallel to the mounting substrate.
• the horizontal type inductor has an advantage that the protruding dimension can be reduced when the length of the winding in the axial direction is large.
• Patent Literature 1 discloses an inductor in which two rectangular wires are overlapped with each other and wound in edgewise winding, in addition to the above-described horizontal type inductor.
• Patent Document 2 discloses a configuration in which two rectangular wires wound in edgewise winding are overlapped along a normal direction of a mounting board.
• Patent Document 1 Japanese Patent Laid-Open Publication No. 2003-17328 (see abstract, paragraph number 0012, FIG. 1 and the like)
• Patent Document 2 Japanese Patent Application Laid-Open No. 2001-85232 (Abstract, see FIG. 1 and others)
• the inductor disclosed in Patent Document 2 is of a vertical type, so if the length of the winding protruding in the axial direction is large, there is a concern in terms of strength for in-vehicle use and In addition, the number of bending times for each end of the flat wire is two times, which is more than the horizontal type and the manufacturing cost is increased accordingly.
• the present invention has been made based on the above circumstances, and an object of the present invention is to provide an inductor in which a rectangular wire is used and an axial direction of the winding is substantially parallel to a substrate on which the winding is mounted. Let's provide an inductor that can improve the bonding strength in mounting.
• the present invention provides a core member made of a magnetic material, a contact surface having a flat shape along the length, and an edgewise winding around an outer peripheral surface of the core member. It has a rectangular wire formed by winding to form a winding structure, and a concave portion, and the winding structure and the core member are positioned in the concave portion by fitting, and the axis of the core member is aligned with the concave portion.
• the core member and the flat wire are fitted into the recess, and the winding structure is positioned in the recess.
• the axis of the core member is opposed to the bottom surface of the recess, the axis direction of the winding is substantially parallel to the opening of the case body, and the core member and the flat wire are The body is in a depressed state in the recessed part of the body. Therefore, when mounted on a board, the inductor is placed horizontally.
• the core member A plurality of winding structures are superposed along the axial direction on the outer peripheral surface by winding the rectangular wire. Therefore, the number of flat wire terminals can be increased. Accordingly, when the inductor is mounted on the substrate, the number of joints can be increased by the amount of the terminal increased, and the inductor can be firmly joined.
• a slit is formed in the case body so as to face a side of the side of the case constituting the case body that is apart from the opening. At least one of the ends of the flat wire is provided with an overhang which is enlarged in diameter and projects toward the outside of the winding, and the overhang comes into contact with the slit. .
• the overhanging portion comes into contact with the slit, so that the overhanging portion can be visually recognized from the outside. Therefore, even when a part of the overhang portion is joined by soldering or the like, the joint portion can be easily visually recognized from the outside. As a result, the joining status can be visually checked, and the reliability of the inductor joining can be improved. Further, when peeling or the like occurs at the junction portion of the inductor, the peeling can be visually recognized.
• the overhang portion is present only on the side of the terminal adjacent to another rectangular wire.
• two flat wires are further provided.
• the two flat wires each have an overhanging portion and have a terminal facing the other flat wire and a terminal having no overhang and not adjacent to the flat wire (end portion). ⁇ side Terminal). Therefore, when viewing the inductor with the axis line in front, the terminal having an overhang and the terminal having no overhang are displaced and do not overlap. As a result, it is possible to visually check the bonding state of the terminals simply by viewing the frontal force of the inductor.
• the case body further includes an edge portion force on the opening side of the side surface. Is where the substrate joint formed by bending the end of the rectangular wire is located
• the substrate bonding portion is located in the lower end concave portion. Therefore, it is possible to prevent the side surface constituting the case body from interfering with the substrate bonding portion. Also, by providing the board joint, it is possible to secure an area where the terminal is joined to the board in accordance with the size of the lower end concave portion, and to secure the joint strength between the board and the inductor. It comes out.
• the other invention further includes, among the plurality of rectangular wires, terminals existing on a side adjacent to the other rectangular wire, and mutually via a mounted board. What is connected.
• the present invention it is possible to improve the bonding strength in mounting an inductor that uses a rectangular wire and the direction of the winding axis is substantially parallel to the substrate on which the winding is mounted.
• FIG. 1 is a perspective view showing an appearance of an inductor according to a first embodiment of the present invention.
• FIG. 2 is a front cross-sectional view of the inductor of FIG. 1, also showing the axial force of the inductor.
• FIG. 3 is a bottom view of the inductor of FIG. 1, which also shows the opening side force of the inductor.
• FIG. 4 is a plan view also showing the upward force of the inductor of FIG. 1.
• FIG. 5 is a side sectional view of the inductor of FIG. 1, as viewed from the side force of the inductor.
• FIG. 6 is a side view of the inductor of FIG. 1 as viewed from the side.
• FIG. 7 is a front view of the inductor of FIG. 1 as viewed from the front.
• FIG. 8 is a front view showing a winding state of a rectangular wire used in the inductor of FIG. 1.
• FIG. 9 is a rear view showing a winding state of a rectangular wire used in the inductor of FIG. 1.
• FIG. 10 is a side view showing a winding state of a rectangular wire used in the inductor of FIG. 1.
• FIG. 11 is a perspective view showing an external shape of an inductor according to a second embodiment of the present invention.
• FIG. 12 is a side view of the inductor of FIG. 11 as viewed from the side.
• FIG. 13 is a bottom view of the inductor of FIG. 11 as viewed from the opening side.
• FIG. 14 is a side sectional view as viewed from the side in FIG. 11.
• FIG. 1 is a perspective view showing an overall configuration of an inductor 10 according to a first embodiment of the present invention.
• FIGS. 2 to 7 are diagrams showing states in which the respective directional forces of the inductor 10 are also seen
• FIGS. 8 to 10 are diagrams showing a state in which the wrapped flat wire 30 is also seen in each of the directional forces. is there.
• the upper side refers to the side perpendicular to the axis L of the inductor 10 (see FIGS. 3 to 6) and opposite to the direction in which the terminal 32 of the flat wire 30 faces.
• the term “downward” refers to a direction in which the terminal 32 of the flat wire 30 is perpendicular to the axis L of the inductor 10 and has a heading direction.
• one end side indicates the side surface 40b side in the direction along the axis L, and the other end side indicates the side surface 40d side in the direction along the axis L.
• the inductor 10 is a horizontal type inductor mounted so that a winding axis L is parallel to a plane of a substrate (not shown).
• This inductor 10 has a core 20, a rectangular wire 30, and a case body 40!
• the core 20 as a core member is a member having a columnar appearance, and has an outer peripheral surface 21 (see FIGS. 2 and 5) described later.
• a rectangular wire 30 is wound.
• the core 20 also includes a magnetic material such as a nickel-based ferrite core.
• the material of the core 20 is not limited to the ferrite core, but may be other magnetic materials such as permalloy.
• the core 20 is located in a state where the rectangular wire 30 is wound around a concave portion 41 of a case body 40 described later.
• the core 20 has a length dimension suitable for being fitted into a concave portion 41 described later.
• the axis of the core 20 (coincident with the axis L of the inductor 10) is in a facing state parallel to the bottom surface of the recess 41 by fitting the core 20 into a recess 41 described later.
• two rectangular wires 30 are used in the present embodiment.
• the rectangular wire 30 has a winding structure 31, a terminal 32, and a board joint 33 (see FIG. 1; FIG. Before forming).
• the flat wire 30 is a wire having a flat cross section and an outer peripheral surface coated with an insulating film such as enamel.
• the flat wire 30 is wound in an edgewise winding.
• a through hole 31a (see FIGS. 8 and 9) is formed in the winding structure 31 in which the rectangular wire 30 is wound by a strong winding. A 20 is communicated.
• the terminal 32 of the flat wire 30 is I have.
• the distance (radius) from the center of the winding structure 31 to the outer peripheral surface of the flat wire 30 is R1
• the center force of the winding structure 31 is up to the terminal 32 of the flat wire 30 whose diameter is also increased.
• R2 the distance from the center of the winding structure 31 to the outer peripheral surface of the flat wire 30
• Rl the portion that protrudes outward due to the diameter expansion
• the two terminals 32 extending from the winding structure 31 are parallel to each other and are extended toward the opening 42 side.
• the cross-sectional area of the flat wire 30 shown in FIGS. 8 to 10 is approximately half as compared with the flat wire 30 conventionally used.
• the cross-sectional area of the flat wire 30 is reduced to approximately half by reducing the width of the flat wire 30 to approximately half, and the thickness of the flat wire 30 is conventionally used. It is the same as the rectangular wire 30.
• the width or thickness of the flat wire 30 is not limited to half, but may be half or more of the width or thickness of the flat wire 30.
• the diameter of the core 20 may be increased correspondingly.
• a portion of the terminal 32 of the flat wire 30 that protrudes from a concave portion 41 of a case body 40 described later is a bent substrate bonding portion 33.
• the board connecting portion 33 connects to a mounting portion of a board (not shown) by, for example, soldering.
• soldering soldering
• the joining method of the board joining portion 33 to the mounting portion is not limited to soldering, and other joining methods such as laser beam welding and arc welding may be used.
• the case body 40 is formed of a non-magnetic material such as resin.
• the case body 40 is box-shaped in appearance by being surrounded by a plurality of (four in the present embodiment) side surfaces 40a to 40d and an upper end surface 40e. Further, by being surrounded by the side surfaces 40a to 40d and the upper end surface 40e, a concave portion 41 is provided inside the case body 40 (see FIGS. 3 and 5), and one side (lower end) of the box shape is formed. Side) is an opening 42 that is open.
• a positioning recess 43 is provided in the inside of the recess 41 on the upper end surface 40e side.
• the positioning concave portion 43 is a concave portion having a circular cross section, and is a portion for positioning the outer peripheral surface of the wound structure 31. Therefore, the positioning recess 43 is provided in a shape following the arc of the outer peripheral surface of the winding structure 31.
• a core receiving portion 44 is provided inside the concave portion 41.
• the core receiving portion 44 is a stepped portion, and the core 20 is received by the stepped core receiving portion 44.
• the core receiver ⁇ 44 is formed by reducing the thickness of the Tsukuda J surfaces 40b and 40d by pressing the opening ⁇ 42 force toward the upper end surface 40e, and stopping the thinning at a portion separated by a predetermined distance from the upper end surface 40e. Have been. Therefore, the core receiving portion 44 is located at a position separated from the upper end surface 40e by a predetermined dimension.
• the case body 40 is provided with a lower end recess 45 at the lower end side of the side surfaces 40a to 40d.
• the lower end concave portion 45 is a concave portion for preventing the substrate bonding portion 33 of the rectangular wire 30 from interfering with the side surfaces 40a to 40d of the case body 40, and is recessed upward from the lower ends of the side surfaces 40a to 40d by a predetermined dimension.
• the substrate bonding portions 33 extend outward from the recesses 41 from the lower end recesses 45 located on the side surfaces 40 b and 40 d.
• the lower dimension of the substrate bonding portion 33 is larger than that of the lower ends of the side surfaces 40a to 40d of the case body 40.
• Lower side The dimensions are such that they protrude from
• the board joint 33 can be easily mounted on the board by soldering or the like.
• the lower end recesses 45 the lower end recesses 45 existing on the side surfaces 40a, 40c parallel to the axis L are wider than the lower end recesses 45 existing on the side surfaces 40b, 40c. This is because, in the case of the lower end concave portions 45 existing on the side surfaces 40a and 40c, two lower end concave portions 45 are connected to each other with the slit 46 interposed therebetween.
• slits 46 are provided in side surfaces 40a and 40c parallel to the axis L.
• the upper end of the slit 46 is spaced apart from the upper end surface 40e by a predetermined dimension.
• the terminal 32 located at the center portion of the axis L among the terminals 32 of the flat wire 30 enters the slit 46. In this case, the terminal 32 is approaching the slit 46 in a state where the terminal 32 projects outward with a force flush with the side surfaces 40a and 40c.
• two rectangular wires 30 are wound around the outer peripheral surface of the core 20 using a winding machine or the like, and two wound structures 31 are formed. Further, of the terminals 32 of the respective rectangular wires 30, the terminal 32 located on the center side of the axis L is bent so as to face the radially enlarged direction to form the overhang portion 34. In this case, the radius becomes R2 after the radial force expansion of the winding structure 31 which had the radius R1 before the diameter expansion. Further, the projecting portion 34 after the diameter expansion is processed so as to be parallel to the other end 32.
• the core 20 and the flat wire 30 are fitted into the recess 41 in a state where the two winding structures 31 are formed.
• the terminal 32 side of the flat wire 30 is positioned on the opening 42 side of the recess 41.
• the outer peripheral surface of the winding structure 31 is positioned by the positioning concave portion 43
• the core 20 is positioned by the core receiving portion 44.
• the terminal 32 on the center side is in a state of approaching (entering) the slit 46, and the outer peripheral surface of the terminal 32 is in a state flush with the side surfaces 40a, 40c, or the outer peripheral surface of the terminal 32 is on the side surface. It will be in the state protruding from 40a, 40c.
• the terminal 32 of the flat wire 30 is bent.
• the substrate bonding portion 33 is bent so that the substrate bonding portion 33 reaches the lower end concave portion 45 and further projects the substrate bonding portion 33 away from the lower end concave portion 45.
• sides 40a, 40 In c the terminal 32 is bent so as to be parallel to the axis L, so that the board connecting portion 33 comes into the lower end concave portion 45. Therefore, the substrate bonding portion 33 does not separate from the side surfaces 40a and 40c, but extends in a state of being parallel to the side surfaces 40a and 40c.
• the two substrate joints 33 are bent so that the side surface 40b or the side surface 40d faces at the same time, and extend in the same direction.
• soldering is performed between each of the board joint portions 33 and the mounting portion of the board.
• soldering is performed by, for example, immersing the board joint 33 in a solder bath, and then bringing the board joint 33 into contact with the mounting portion of the board.
• the board joints 33 at the center of each of the two rectangular wires 30 are mounted on a portion of the board that is electrically connected to the circuit pattern connecting the two board joints 33. As a result, the two board joints 33 are connected to each other.
• the inductor 10 is mounted on the substrate.
• inductor 10 having such a configuration, core 20 and rectangular wire 30 are present in case body 40 in a state where the outer peripheral surface of wound structure 31 is in contact with the core. Therefore, the axis L of the winding is substantially parallel to the opening 42 of the case body 40, and the inductor 10 is placed along the axis L along the outer peripheral surface of the force core 20 in the horizontal state. Two winding structures 31 are superimposed. Therefore, the number of terminals 32 of the flat wire 30 can be increased, and when the inductor 10 is mounted on a substrate, the number of junctions can be increased by the amount of the terminal 32 having increased heat. Thereby, the inductor 10 can be firmly joined to the substrate.
• the inductor 10 As described above, by increasing the number of the terminals 32 and increasing the bonding strength of the inductor 10, it is possible to ensure the reliability of various devices using the inductor 10 for a long period of time. Therefore, for example, even when the inductor 10 is used in an environment where vibration is applied, such as various on-vehicle devices, reliability can be ensured and the device can be operated for a long period of time. Become.
• the force required to bend twice at each end of the flat wire is the terminal 32 in the inductor 10 according to the present embodiment.
• the substrate bonding portion 33 is formed only by bending once. Therefore, the manufacturing cost can be reduced as compared with the vertical type inductor.
• the width of the flat wire 30 is reduced to approximately half as in the present embodiment, there is an advantage that the diameter of the core 20 can be increased and the inductance value can be increased.
• the thickness of the rectangular wire 30 is reduced to approximately half, there is an advantage that the processing of the rectangular wire 30 becomes easy.
• the thickness dimension is reduced to approximately half, when the above-described flat wire 30 is wound, it is easy to automatically wind the wire using a winding machine, and a thick round wire is wound as in the related art. Winding using a winding machine is easier than in the case of turning.
• the case body 40 is provided with a slit 46, and the flat wire 30 is provided at one of its ends 32 with a projecting portion 34 whose diameter is expanded toward the outer diameter side of the winding.
• the overhanging portion 34 reaches the slit 46.
• the overhanging portion 34 whose diameter has been expanded can be visually recognized from the outside.
• the joint between the board joint 33 and the board can be easily visually recognized from the outside.
• the peeling can be visually recognized, and the cause of the failure can be easily identified.
• the overhang portion 34 is provided on the terminal 32 existing on the side adjacent to the other rectangular wire 30, and is provided on the terminal 32 existing on the side not adjacent to the other rectangular wire 30. Not been.
• the case body 40 is provided with a lower end concave portion 45 for recessing the side surface 40 a to 40 d of the edge portion of the side surface 40 a to 40 d on the opening portion 42 side.
• the substrate junction 33 is located. Therefore, an area where the terminal 32 is bonded to the substrate can be secured in accordance with the size of the lower end recess 45, and the bonding strength between the substrate and the inductor 10 can be ensured. Further, it is possible to prevent the side surfaces 40a to 40d from interfering with the substrate bonding portion 33.
• the terminals 32 that are present on the sides adjacent to each other are connected to each other via a wiring pattern of the board on which they are mounted.
• the wound structure 31 composed of two rectangular wires 30 can be regarded as the inductor 10 composed of one rectangular wire 30. Therefore, the number of windings can be regarded as a configuration in which the number of windings in the two winding structures 31 is added.
• FIG. 11 is a perspective view showing an overall configuration of an inductor 11 according to a second embodiment of the present invention. It is.
• FIG. 12 is a side view of the inductor 11
• FIG. 13 is a bottom view of the inductor 11.
• the inductor 50 of the present embodiment is different from the inductor 10 of the above-described first embodiment in that the case body 40 is not provided with the slit 46. Therefore, the terminal 32 does not have the overhang portion 34 that enters the slit 46. That is, the terminal 32 has not been subjected to the bending force so as to be directed in the radially expanding direction, so that the overhang portion 34 does not exist.
• the shape of some lower end concave portions present in case body 40 is also different. That is, in the present embodiment, the lower end recesses present on the side surfaces 40a and 40c (hereinafter, the lower end recesses present on the side surfaces 40a and 40c in the present embodiment are referred to as lower end recesses 450) are largely open. It has become.
• the large opening means that the size of the lower end concave portion 450 (the notch size) in which the downward force of the inductor 11 is also depressed toward the upper side is larger than the notch size of the lower end concave portion 45 present on the side surfaces 40b and 40d. But it's getting big enough.
• the lower end recess 450 when the inductor 11 is also viewed from the side, the lower end recess 450 is provided in a recessed (cut-out) state until the winding structure 31 is sufficiently visible. I have.
• the cutout dimension of the lower end recess 450 is not limited to this, and the cutout structure 31 may be cutout to such an extent that the wound structure 31 is not visible when the inductor 11 is also viewed from the side.
• the length of the lower end concave portion 450 in the direction of the axis L only needs to correspond to the length of the substrate bonding portion 33.
• lower end concave portions 45 present on side surfaces 40b and 40d are also arranged on the corner side of case body 40. While the force is being applied, the recess size of the lower end recess 45 is the same as that of the above-described first embodiment.
• a core 200 having an approximately T-shaped appearance is used.
• the core 200 includes a column 201 and a flange 202.
• the columnar portion 201 has the same diameter as the core 20 of the above-described first embodiment.
• a portion (tip portion) opposite to the side where the flange portion 202 exists is received by the same core receiving portion 44 as in the above-described first embodiment.
• the flange 202 is slightly smaller than the width of the recess 41. Force A disc-shaped member having a diameter corresponding to the width dimension of the concave portion 41.
• the diameter of the flange 202 is sufficiently larger than the diameter of the column 201.
• a portion in contact with the flat wire 30 may be provided with an insulating portion such as an insulating tape.
• an insulating portion such as an insulating tape.
• a spacer 203 for supporting a portion of cylindrical portion 201 of core 200 separated from flange portion 202 may be provided inside recessed portion 41.
• the number of turns of the winding structure 31 of the two rectangular wires 30 is substantially equal.
• the flat wire 30 is not wound around the flange 202.
• a state where the flat wire 30 is not wound by a predetermined length also exists at a part opposite to the side where the flange part 202 is provided (a tip part of the flange part 202). It has become.
• the winding structure 31 on the side where the flange 202 does not exist may have a larger number of turns of the flat wire 30.
• the inductor 11 having such a configuration as in the inductor 10 of the above-described first embodiment, two wound structures 31 are overlapped along the axis L. Therefore, the number of rectangular wires 30 can be increased, the number of terminals 32 can be increased, and the number of joints with the substrate can be increased. Thereby, the bonding of the inductor 11 to the substrate can be strengthened.
• a lower end concave portion 450 having a large notch size is provided. Therefore, for example, when soldering is performed, it is possible to confirm the degree of adhesion. As a result, it is possible to prevent a solder defect from occurring, and it is possible to further increase the soldering strength of the inductor 11 to the substrate. Further, since the core 200 has the flange portion 202, the flange portion 202 can function as a positioning when the flat wire 30 is wound around the core 200.
• the inductors 10 and 11 are joined to the mounting portion of the board by the board joining section 33.
• the part to be joined to the board is not limited to the board joint part 33 where the terminal 32 is bent, and after the terminal 32 is inserted into the board, the insertion part is fixed with solder or the like. You may do it. Further, a separate terminal member may be attached to the case body 40.
• the inductors 10 and 11 include the case body 40.
• the inductor 10 is not limited to the configuration including the case body 40, and may be a type not including the case body 40.
• the inductor 10 has a configuration including the cores 20 and 200 and the flat wire 30.
• the core member any material can be used as long as it can position the winding Z of the rectangular wire 30.
• a hollow cylindrical member made of a magnetic or non-magnetic material can be used. You can do it.
• the number of rectangular wires 30 is not limited to two, and three or more may be used.
• the rectangular wire 30 in a state where the rectangular wire 30 is sandwiched by being present on both sides is also included, but both terminals 32 of the rectangular wire 30 in the sandwiched state include: Each overhang portion 34 is provided.
• the rectangular wires 30 are not limited to a configuration in which they are connected to each other via a substrate, and a configuration in which a current can be independently passed through each rectangular wire 30 may be adopted.
• a configuration is employed in which the overhang portion 34 is located substantially at the center of the axis L of the inductor 10.
• a configuration may be adopted in which the overhang portion 34 is positioned on the end side of the axis L while applying force. In this case, the provision of the slit 46 can be omitted.
• the case body 40 is provided with the positioning recess 43, the lower end recess 45, and the slit 46. A configuration that does not provide these components May be adopted.
• the above-described configuration may be adopted in a separate electronic member, such as a transformer, a filter, and a connector.
• the inductor of the present invention can be used in the field of electric equipment.

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• 2005
  • 2005-05-23 US US11/628,169 patent/US7411477B2/en not_active Expired - Lifetime
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  • 2005-05-23 EP EP05741295A patent/EP1752997B1/en not_active Expired - Lifetime
  • 2005-05-23 AT AT05741295T patent/ATE485592T1/de not_active IP Right Cessation
  • 2005-05-23 JP JP2006514068A patent/JPWO2005119709A1/ja active Pending
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