JP2017073485A - Winding component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a horizontal winding component which can easily perform positioning of an outgoing line of a winding with high precision without using a separate component such as a pedestal base.SOLUTION: A winding component comprises: a core 10 in which the outer periphery of a cylindrical core material made of a magnetic material is covered by an insulation core cover 11; a pair of wall state ribs 12 dividing the outer periphery of the core cover 11 into first and second winding parts; and first and second windings 13 and 14 to be wounded to the first and second winding parts. In the outer periphery part of the rib 12, a fixed part 17 of a leading line having a leg part projecting to a side outer than the outer periphery of the first and second windings to an end part in an axial direction is integrally formed. A concave groove part of which leading lines 15 and 16 of the first and second windings are led out to an outer surface side from an inside surface side of the fixed part is formed in the fixed part 17. A positioning part 21 for fixing the leading lines 15 and 16 to be led along the outer surface is provided in the outer surface of the leg part in the fixed part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a horizontal winding component used for a common mode choke coil or the like.

  Generally, a circuit board for data transmission in digital electronic devices incorporates a common mode choke coil (hereinafter abbreviated as a common mode coil) for removing a common mode noise current caused by a difference in transmission characteristics. Yes.

FIG. 5 shows a horizontal ring coil disclosed in Patent Document 1 below among the common mode coils.
This ring coil 1 is generally composed of a toroidal ring core 2 and a winding 3 wound around the ring core 2, and lead wires 3 a and 3 b of the winding 3 are respectively formed in holes of the printed circuit board 4. The printed circuit board 4 is mounted by being inserted into 4a and 4b and soldered to a land pattern (not shown).

  By the way, in the horizontal ring coil 1 having the above configuration, it is difficult to process the positions of the lead wires 3a and 3b of the winding 3 with high accuracy, and the lead wires 3a and 3b are not fixed. Since the position is always unstable, there is a problem that it is difficult to automate mounting on the printed circuit board 4. Further, since the winding 3 is in contact with the printed circuit board 4, there is a risk of interference with other circuit patterns.

  Therefore, in recent years, a common mode coil is widely used in which a pedestal is attached to a ring core and a lead wire of a winding is inserted into a hole formed in the pedestal as shown in the following cited document 2. .

JP 09-55318 A JP 2010-232245 A

  However, the common mode choke coil provided with such a pedestal requires a pedestal for fixing the lead wire, which increases the number of parts and requires extra work for the mounting work. There was a problem that it was inferior in economic efficiency.

  The present invention has been made in view of the above circumstances, and provides a horizontal winding component capable of easily positioning a lead wire of a winding with high accuracy without using another component such as a pedestal. It is an object to do.

  In order to solve the above-mentioned problem, the invention described in claim 1 includes a core covered with a synthetic resin core cover in which an outer periphery of a cylindrical core member made of a magnetic material serves as an insulating layer, and an outer periphery of the core cover. A pair of wall-shaped ribs that are integrally formed at positions opposed to each other in the radial direction to divide the outer periphery of the core cover into a first winding portion and a second winding portion, and the first winding portion In the winding component including the first winding wound around the second winding portion and the second winding wound around the upper second winding portion, a tangential direction of the core is disposed on the outer peripheral portion of the rib. And a fixed portion of the lead wire, which extends in the axial direction and has leg portions projecting outward from the outer circumferences of the first and second windings at the end in the axial direction. The lead lines of the first winding or the second winding are connected to the both ends of the tangential direction of the portion of the fixing portion. The lead line that forms a concave groove portion that is led out from the surface side to the outer surface side, and that is drawn along the outer surface of the leg portion of the fixed portion and protrudes outward from the leg portion. It is characterized in that a positioning portion for fixing the is provided.

  According to a second aspect of the present invention, in the first aspect of the present invention, the fixing portion is formed between the inner surface of the fixing portion from which the lead wire is drawn and the inner peripheral surface of the concave groove portion and the concave portion. An R portion larger than the wire diameter of the lead wire is formed between the inner peripheral surface of the groove portion and the outer surface of the fixed portion.

  Furthermore, the invention described in claim 3 is characterized in that, in the invention described in claim 1 or 2, the plate thickness of the fixing portion is larger than the wire diameter of the lead wire.

  In the invention according to any one of claims 1 to 3, the first winding and the second winding wound around the core cover are integrally formed on the outer peripheral portion of the rib formed on the core cover. Each lead wire is bent from the inner surface side of the fixed portion, passed through the groove portion, further bent to the outer surface side and pulled out, and the leg portion formed on the fixed portion with the tip portion protruding from the fixed portion. It is fixed by a positioning part provided on the outer surface of the.

  As a result, the lead wires of the first winding and the second winding are fixed in the positioning portion after the movement is restricted in the concave groove portion of the fixing portion. The lead wires of the first and second windings can be easily positioned and fixed with high accuracy without using separate parts.

  In addition, since the leg portion of the fixed portion where the lead wire positioning portion is formed is formed so as to protrude outward in the axial direction from the outer circumference of the first and second windings, the lead wire When the front end portion of the first and second windings is inserted into the hole of the substrate, the leg portion abuts on the substrate and a space can be formed between the outer periphery of the first and second windings. Thereby, when the winding component is mounted on the substrate, it is possible to reliably prevent the first or second winding from interfering with the circuit pattern on the substrate.

  Further, in the invention according to claim 2, since the corner portion of the recessed groove portion through which the lead wire in the fixed portion is passed is formed by the R portion larger than the wire diameter of the lead wire, Even when the wire diameter is large, the leader line can be easily bent along the R portion and pulled out to the outer surface side of the leg portion.

  Furthermore, according to the invention described in claim 3, since the plate thickness of the fixing portion is made larger than the wire diameter of the lead wire, the wire is fixed at the time of bending even when the wire diameter of the lead wire is large. It is possible to prevent the portion from being bent or distorted.

It is a top view which shows one Embodiment of the winding components of this invention. It is a right view of FIG. It is a bottom view of FIG. It is a front view of FIG. It is a longitudinal cross-sectional view which shows the conventional ring coil.

  1 to 4 show an embodiment in which a winding component according to the present invention is applied to a horizontal toroidal type common mode coil. The horizontal type is mounted with the axis of the core 10 around which a first winding and a second winding described later are wound parallel to the plate surface of the substrate.

  In these drawings, reference numeral 10 denotes a bottomed cylindrical core cover 11 made of a synthetic resin having insulating properties on the outer periphery of a thick cylindrical core made of a magnetic material, and a lid for closing the opening of the core cover 11. The core is covered with 11a.

  On the outer periphery of the core cover 11, a wall-like rib 12 that divides the outer periphery of the core cover 11 into a first winding portion and a second winding portion is integrally formed at a position facing the diameter direction. ing. The first winding 13 is wound around the first winding portion of the core cover 11, and the second winding 14 is wound around the second winding portion.

  In this common mode coil, a fixing portion 17 for fixing the lead wires 15 and 16 of the first and second windings 13 and 14 is integrally formed on the outer peripheral portion of the rib 12. The fixing portion 17 is formed in a flat plate shape extending in the tangential direction and the axial direction of the core 10, and has a thickness that makes the thickness t larger than the wire diameter of the lead wires 15 and 16. .

  Further, the fixed portion 17 is formed so that the axial length of the core 10 protrudes outward from the outer circumferences of the first and second windings 13 and 14 as shown in FIG. Thus, the protruding portion is a leg portion 18.

  Further, on both end surfaces in the tangential direction of the fixing portion 17, as shown in FIGS. 2 and 4, the lead wires 15 and 16 of the first winding 13 or the second winding 14 are provided on the inner surface of the fixing portion 17. A concave groove 20 is formed to be drawn from the 17a side to the outer surface 17b side.

  Here, in the fixing portion 17, a portion from the inner surface 17 a from which the lead lines 15 and 16 are drawn to the inner peripheral surface of the concave groove portion 20, and a portion from the inner peripheral surface of the concave groove portion 20 to the outer surface 17 b of the fixing portion 17. These are formed by R portions 20a and 20b larger than the wire diameters of the lead wires 15 and 16, respectively.

  On the other hand, the lead lines 15 and 16 led out from the concave groove 20 to the outer surface 17b of the fixing portion 17 are arranged with their respective tip portions 15a and 16a protruding outward from the leg portions 18 of the fixing portion 17. . And the positioning part 21 for fixing the leader lines 15 and 16 pulled out along this outer surface 17b is integrally formed in the outer surface 17b of the leg part 18 in the fixing | fixed part 17. As shown in FIG.

  This positioning portion 21 is a substantially cylindrical protrusion in appearance, and is arranged at a predetermined location on the outer surface 17b so that the leading end portions 15a and 16b of the lead lines 15 and 16 are disposed at positions facing the hole portions of the substrate (not shown). The lead wires 15 and 16 are fitted and fixed between the positioning portions 21.

  According to the horizontal common mode coil having the above configuration, the fixing portion 17 is integrally formed on the outer periphery of the rib 12 of the core cover 11, and the first and second windings 13 wound around the core cover 11 are formed. 14 lead wires 15 and 16 are bent from the inner surface 17a side of the fixing portion 17 and passed through the groove portion 20, and further bent to the outer surface 17b side and pulled out, and the tip portions 15a and 16a are protruded from the fixing portion 17. In this state, the lead wires 15 and 16 of the first and second windings 13 and 14 are respectively fixed to the fixing portion because the positioning portion 21 provided on the outer surface 17b of the leg portion 18 of the fixing portion 17 is fixed. The movement is constrained in the 17 groove portions 20 and fixed in the positioning portion 21. As a result, the lead lines 15 and 16 of the first and second windings 13 and 14 can be easily positioned and fixed with high accuracy without using separate parts such as a pedestal as in the prior art.

  In addition, because the leg portion 18 of the fixed portion 17 where the positioning portion 21 is formed is formed so as to protrude outward in the axial direction from the outer periphery of the first and second windings 13 and 14. When the leading end portions 15a and 16a of the lead wires 15 and 16 are inserted into the holes of the board, the leg part 18 abuts on the board and is between the outer circumferences of the first and second windings 13 and 14. A space can be formed. Thereby, when this common mode coil is mounted on a substrate, it is possible to reliably prevent the first or second winding 13 or 14 from interfering with a circuit pattern on the substrate.

  Furthermore, since the corner | angular part of the recessed groove part 20 through which the leader lines 15 and 16 in the fixing | fixed part 17 pass is formed by R part 20a, 20b larger than the wire diameter of the leader lines 15 and 16, the leader line 15 is formed. , 16 can be easily bent along the R portions 20a and 20b and pulled out to the outer surface 17b side of the leg portion 18 even when the wire diameter is large.

  In addition, since the plate thickness t of the fixing portion 17 is larger than the wire diameter of the lead wires 15 and 16, the fixing portion 17 is not bent when bent even when the wire diameter of the lead wires 15 and 16 is large. It is possible to prevent bending and distortion.

  In the above embodiment, only the case where the winding component according to the present invention is applied to a horizontal toroidal type common mode coil has been described. However, the present invention is not limited to this and the first winding is not limited thereto. As long as the axis of the core around which the wire and the second winding are wound is parallel to the plate surface of the board, and the lead lines of the first and second windings are mounted on the board, The same can be applied to the winding component.

DESCRIPTION OF SYMBOLS 10 Core 11 Core cover 12 Rib 13 1st coil | winding 14 2nd coil | winding 15, 16 Leader 17 Fixed part 17a Inner surface of a fixed part 17b Outer surface of a fixed part 18 Leg part 20 Groove part 20a, 20b R part 21 Positioning Part

Claims (3)

A core covered with a synthetic resin core cover whose outer periphery of a cylindrical core made of a magnetic material is an insulating layer, and a core cover that is integrally formed at a position facing the outer periphery of the core cover in the radial direction. A pair of wall-shaped ribs that divide the outer periphery into a first winding portion and a second winding portion, a first winding wound around the first winding portion, and an upper second In the winding component including the second winding wound around the winding portion,
A drawer having a leg portion extending in the tangential direction and the axial direction of the core on the outer peripheral portion of the rib and protruding outward from the outer periphery of the first and second windings at the end portion in the axial direction. While integrally forming the fixed part of the wire,
On both end surfaces in the tangential direction of the fixed portion, a concave groove portion is formed in which the lead wire of the first winding or the second winding is drawn from the inner surface side of the fixed portion to the outer surface side,
And a positioning portion for fixing the lead wire, which is drawn along the outer surface and protrudes the tip portion outward from the leg portion, is provided on the outer surface of the leg portion of the fixing portion. Wire parts.   The fixed portion includes the lead wire between the inner surface of the fixed portion from which the lead wire is drawn and the inner peripheral surface of the concave groove portion, and between the inner peripheral surface of the concave groove portion and the outer surface of the fixed portion. The winding part according to claim 1, wherein an R portion larger than the wire diameter is formed.   The winding part according to claim 1 or 2, wherein a plate thickness of the fixed portion is larger than a wire diameter of the lead wire.

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