JP6320708B2 - Winding parts - Google Patents

Description

  The present invention relates to a winding component including a coil that generates a magnetic field, such as a choke coil and a transformer, and a core that forms a magnetic path.

  Among winding components such as choke coils and reactors incorporated in FA devices and various electronic and electric devices for vehicles, especially those used for power supply devices with power of 1 kW or more, a large current of 10 A to 150 A For example, as shown in Patent Document 1 below, a coil in which a rectangular copper wire is edgewise wound is often used to reduce the electric resistance value and suppress heat generation.

  In a winding component using an edgewise coil of this type, a crimp terminal or the like attached to a lead wire from the device side is usually connected to the end of the coil drawn to the outside. However, the above-mentioned coil is likely to be distorted in the out-of-plane direction at both ends to be a lead wire when processing a rectangular copper wire into edgewise winding, and thus it takes time to install a crimp terminal or the like. was there.

JP 2013-42027 A

  The present invention has been made in view of the above circumstances, and is a winding that can easily and stably connect an end portion of an edge-wound coil lead wire to a crimp terminal or the like from the equipment side. It is an object to provide a wire component.

In order to solve the above-mentioned problem, the winding component according to claim 1 forms a closed magnetic circuit by arranging a coil formed by edgewise winding a rectangular wire and surrounding the coil. A core and a case having a cylindrical wall portion covering the outer periphery of the coil and the core in the axial direction, and the coil is linear in a tangential direction from a position where both ends intersect in the axial direction view drawn in, the case, together with the opening for drawing out the ends of the coil to the outside of the case is formed, said end of each drawn outward from the opening is placed characterized in that it is formed integrally along the said end extending linearly outward from the opening at the height position of the axis direction corresponding to the end portion of the terminal block are each positioned Te It is intended to.

  According to a second aspect of the present invention, in the first aspect of the present invention, a bolt insertion hole is formed at the tip of the coil, and the terminal block is provided with the bolt insertion hole. It is characterized in that a communicating nut is embedded.

  Further, the invention according to claim 3 is the invention according to claim 1 or 2, wherein the terminal block is formed such that the width dimension of the mounting portion of the coil is larger than the width dimension of the coil. The mounting portion is formed with a wall portion that prevents movement in a direction orthogonal to the extending direction of the coil, and a claw portion that protrudes toward the upper surface side of the coil and prevents the coil from lifting up. It is what.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the case is characterized in that both ends in the axial direction are open.

  According to the invention described in any one of claims 1 to 4, in order to provide a case having a cylindrical wall portion that accommodates the coil and the core, and to pull out both end portions of the coil formed in the case outward. Since the terminal block is provided at the opening of the coil, the end of the coil drawn outward from the opening of the case is placed and positioned on the terminal block, so that the end of the coil is externally connected to the end of the coil. Connection terminals can be easily connected.

  In this case, according to the second aspect of the present invention, the bolt insertion hole is formed in the tip of the coil, and the terminal block is embedded with the nut communicating with the bolt insertion hole. The connection terminal can be connected to the end of the coil by a bolt. As a result, it is not necessary to connect by welding or the like that requires labor and skill as in the prior art, and the connection work can be simplified.

  Moreover, as a structure which mounts and positions the edge part of a coil in a terminal block, various forms are employable, For example, like the invention of Claim 3, of the edge part of the coil in a terminal block If the mounting portion is formed with a wall portion that prevents movement in the direction orthogonal to the extending direction of the coil and a claw portion that protrudes to the upper surface side of the coil and prevents the coil from lifting, the coil is processed. Even when the end portion is sometimes distorted, it is preferable that the end portion can be accurately and stably positioned on the terminal block.

  Further, in this type of winding component, it is preferable to have some heat dissipation function because the amount of heat generated by the coil due to a large current increases. In this regard, according to the fourth aspect of the present invention, since both ends in the axial direction of the case are opened, the core exposed at the opening of the end of the case is attached to the mounting portion of the winding component. The heat dissipation effect can be enhanced by the contact.

1 is a perspective view in plan view showing an embodiment of a winding component according to the present invention. It is the perspective view seen from the bottom of FIG. FIG. 2 is an exploded perspective view of FIG. 1. It is a perspective view which shows the case of FIG.

  1 to 4 show an embodiment in which a winding component according to the present invention is applied to a choke coil. The choke coil includes a coil 1 and an insulating cover 2 in which the coil 1 is housed. And an insulating cap 3 disposed in an opening formed at the upper end of the cover 2, and a pair of butterfly cores disposed so as to surround the cover 2 and the cap 3 to form a closed magnetic circuit 4 and a case 5 that houses the cover 2, the cap 3, and the core 4.

  Here, the cover 2 includes a bottom plate 2a having a circular hole in the center, a wall 2b that is provided upright at both longitudinal ends of the bottom plate 2a and covers the outer periphery of the coil 1 in the axial direction, The cylindrical portion 2c erected in the hole is integrally formed. Further, in the cover 2, a mounting portion 2d for a pair of arcuate plate-like magnets 6 is formed on the outer peripheral portion of the wall portion 2b. Furthermore, the wall 2b of the cover 2 is formed with an opening 2e for pulling out the ends 1a and 1b of the coil 1 to the outside, and the back 4a of the butterfly core 4 is guided to the back side of the bottom plate 2a. A pair of protrusions 5f are formed.

  And in this cover 2, the coil 1 is accommodated by the exterior by the cylindrical part 2c. The coil 1 is formed by edgewise winding a rectangular copper wire, and both ends 1a and 1b are linearly drawn in a tangential direction from a position where the ends 1a and 1b intersect in plan view. 1b extends outwardly from the opening 2e and is accommodated in the cover 2.

  On the other hand, the cap 3 is an annular plate-like member having an insertion hole 3a formed at the center, and has an outer diameter substantially equal to the outer diameter of the wall 2b of the cover 2 and an inner diameter of the inner cylinder 2c of the cover 2. It is formed in the dimension substantially equal to the outer diameter of the. A pair of guide plates 3 b that guide the back part 4 a of the butterfly core 4 are erected on the upper surface of the cap 3. And this cap 3 is arrange | positioned so that the upper opening of the cover 2 in which the coil 1 was accommodated may be plugged up.

  The pair of butterfly cores 4 is disposed so as to surround the cover 2 and the cap 3. The butterfly core 4 includes a flat plate-like back portion 4a that faces the bottom plate 2a or the cap 3 of the cover 2, and an outer leg that is integrally formed at both longitudinal ends of the back portion 4a and is disposed along the wall portion 2b. 4b and a columnar middle leg 4c that is integrally formed at the center between the outer legs 4b and is inserted into the inner cylindrical portion 2c of the cover 2.

  In the pair of butterfly cores 4, the middle leg 4c is inserted into the inner cylindrical portion 2c from the insertion hole 3a of the cap 3 or the bottom plate 2a of the cover 2, and the tip ends of each other are in contact with each other, or a predetermined gap Are arranged. The outer leg 4b is formed to be shorter than the middle leg 4c, and the magnet 6 inserted into the mounting portion 2d of the cover 2 is interposed between the outer legs 4b. And the laminated body of these covers 2, the cap 3, and the core 4 is inserted in the case 5 which consists of insulating resin.

  The case 5 is an outer appearance substantially cylindrical wall portion that covers the outer periphery of the laminated body in the axial direction and has both ends opened, and the length in the axial direction is substantially the same as the axial length in the laminated body. It is formed to be equal. An opening 5a is formed on the outer peripheral portion of the case 5 so that the ends 1a and 1b of the coil 1 are drawn outward by partially cutting away from the upper end in the drawing. .

  In addition, on the outer periphery of the lower end portion of the case 5 in the drawing, there are integrally mounted bases 9 for mounting the winding parts to the mounting portions of the equipment by bolts, screws, etc. at a plurality of locations spaced in the circumferential direction. Is formed. A pair of terminal blocks 7 and 8 on which the ends 1 a and 1 b of the coil 1 are placed are integrally formed in the vicinity of the opening 5 a of the case 5.

  The terminal blocks 7 and 8 are formed along the end portions 1a and 1b extending linearly outward from the opening 5a at height positions corresponding to the end portions 1a and 1b of the coil 1, respectively. . That is, the terminal block 7 of the terminal 1a drawn out from the vicinity of the mounting base 9 of the case 5 is formed in the vicinity of the mounting base 9, and the terminal block of the terminal 1b drawn out from the vicinity of the upper opening of the case 5 in the figure. 8 is formed at a position higher than the terminal block 7 corresponding to the position of the terminal 1b.

  Each of these terminal blocks 7 and 8 is formed such that the width dimension of the upper surface (mounting portion) is larger than the width dimension of the end portions 1 a and 1 b of the coil 1. And the groove | channel part which the edge parts 1a and 1b of the coil 1 fit is formed in the said upper surface, and this prevents the movement to the direction orthogonal to the extension direction of the coil 1 on both sides of a groove part. A wall portion 10 is formed. In addition, each wall portion 10 is formed with a claw portion 11 that protrudes from the upper surface side of the coil 1 fitted in the groove portion and prevents the coil 1 from lifting.

  On the other hand, bolt insertion holes 12 are formed at the tips of the end portions 1a and 1b of the coil 1, respectively. And in the groove part of the said terminal blocks 7 and 8, the nut 13 is embedded in the position connected with the bolt insertion hole 12 in the state which fitted the edge part 1a, 1b of the coil 1 in the groove part.

  In the choke coil having the above-described configuration, a cylindrical case 5 that houses a laminated body including the coil 1, the cover 2, the cap 3, and the core 4 is provided, and both ends 1 a. Terminal blocks 7 and 8 on which the plate surfaces of the end portions 1a and 1b are placed are provided in the opening portion 5a for drawing 1b outward. Therefore, the end portions 1 a and 1 b of the coil 1 drawn outward from the opening 5 a of the case 5 can be positioned on the terminal blocks 7 and 8.

  At this time, the wall portion that prevents the terminal blocks 7 and 8 from moving in the direction orthogonal to the longitudinal direction of the end portions 1a and 1b of the coil 1 on the upper surface serving as the placement portion of the end portions 1a and 1b of the coil 1. 10 and a claw portion 11 that protrudes to the upper surface side of the end portions 1a and 1b of the coil 1 and prevents the end portions 1a and 1b from being lifted up. Even when distortion occurs in 1b, the end portions 1a and 1b can be accurately and stably positioned on the terminal blocks 7 and 8.

  Moreover, bolt insertion holes 12 are formed at the tips of the end portions 1a and 1b of the coil 1, and the bolt insertion holes 12 are formed on the terminal blocks 7 and 8 side when the end portions 1a and 1b are fitted into the groove portions. Since the nut 13 communicating with the pad is embedded, the external connection terminal can be connected to the end portions 1a and 1b of the coil 1 with bolts, and thus connected by welding or the like that requires labor and skill as in the prior art. Can be easily connected.

  Further, the case 5 is formed in a cylindrical shape having substantially the same length as the laminated body including the coil 1, the cover 2, the cap 3, and the core 4, so that both ends in the axial direction are opened. The heat radiation effect can be enhanced by bringing the back portion 4a of the core 4 exposed at the opening of the end of the core 4 into contact with the attachment portion on the equipment side to which the choke coil is attached.

  In the above embodiment, only the case where the winding component according to the present invention is applied to a choke coil has been described. However, the present invention is not limited to this, and other winding components such as a transformer are used. Can be similarly applied.

DESCRIPTION OF SYMBOLS 1 Coil 1a, 1b End part 4 Core 5 Case 5a Opening part 7, 8 Terminal block 10 Wall part 11 Claw part 12 Bolt insertion hole 13 Nut

Claims (4)

A coil formed by edgewise winding a rectangular wire, a core disposed so as to surround the coil and forming a closed magnetic circuit, and a cylindrical wall covering the outer periphery of the coil and the core in the axial direction A case having a portion,
The coil is drawn linearly in a tangential direction from a position where both ends thereof intersect in the axial direction view,
The case is formed with openings for pulling out both ends of the coil to the outside of the case, and each of the ends drawn outward from the opening is placed and positioned. The winding is characterized in that the terminal block is integrally formed along the end portion extending linearly outward from the opening at the axial height position corresponding to each end portion . parts.   The winding according to claim 1, wherein a bolt insertion hole is formed in a tip portion of the coil, and a nut communicating with the bolt insertion hole is embedded in the terminal block. Wire parts.   The terminal block has a wall in which a width dimension of the mounting portion of the coil is formed larger than a width dimension of the coil, and a wall that prevents the mounting portion from moving in a direction orthogonal to the extending direction of the coil. The winding part according to claim 1 or 2, wherein a claw portion that protrudes from the upper surface side of the coil and prevents the coil from lifting is formed.   The winding case according to any one of claims 1 to 3, wherein both ends of the case in the axial direction are open.

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