JP2006278958A - Coil bobbin device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coil bobbin device in which disconnection of coil wire can be prevented. <P>SOLUTION: The coil bobbin device 100 comprises a cylindrical body 20, flanges 2 and 3 formed at the opposite ends of the body 20, an ear 10 connected to a part of the tangential surface of the flange 3, a terminal 4 connected to the end of the ear 10, terminals 5 and 6 juxtaposed to project perpendicularly to the terminal 4 and radially outward of the body 20, projections 7a, 7b and 7c projecting perpendicularly to the terminal 4 and radially outward of the body 20 to clamp each root of the terminals 5 and 6 on the terminal 4 from the opposite sides of the body 20 in the circumferential direction, and a projection 7d projecting perpendicularly to the terminal 4 and radially outward of the body 20 to surround each root of the terminals 5 and 6 on the terminal 4 from three ways in conjunction with the projections 7a, 7b and 7c. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a coil bobbin device, and more particularly to a coil bobbin device used for a motor or the like.

A conventional coil bobbin device is connected to a cylindrical body, a coil made of a coil wire wound around the body, a flange formed at both ends in the axial direction of the body, and a part of a tangential surface of the flange. And a terminal portion having a plurality of terminals each wound at both ends of the coil wire. In the above-described coil bobbin device, a coil bobbin device configured to form a concave portion and a convex portion adjacent to each other in the terminal portion, project a terminal in the concave portion, and a printed board abuts the convex portion is proposed ( For example, see Patent Document 1.) According to this apparatus, since the concave portion and the convex portion are provided on both sides of the terminal, the coil wire wound around the terminal by the printed board can be prevented from being disconnected.
Japanese Patent Laid-Open No. 02-65648

However, the conventional coil bobbin device has the following problems.
(1) When the coil wire is wound around the terminal, the coil wire is easily caught on the convex portion, it is difficult to wind the coil wire around the terminal, and the coil wire may be disconnected.
(2) When a deformable board such as a flexible printed circuit board is brought into contact with the convex part, when soldering the board and the terminal with a strong soldering iron near the terminal, the gap between the terminal and the convex part There is a possibility that the substrate is deformed so as to fall, and the coil wire is thereby broken.

  The objective of this invention is providing the coil bobbin apparatus which can prevent the disconnection of a coil wire reliably.

  In order to achieve the above object, a coil bobbin device according to claim 1 includes a cylindrical body around which a coil wire is wound, a pair of flanges formed at both ends of the body, and a pair of flanges. A coil bobbin device provided at one outer edge portion and having a terminal portion having a terminal around which an end portion of the coil wire is wound, and a pair of projecting portions arranged in parallel on the terminal portion with the terminal interposed therebetween The height of the pair of protrusions is equal to each other.

  A coil bobbin device according to a second aspect is the coil bobbin device according to the first aspect, wherein another projecting portion disposed on the terminal portion is arranged to surround the terminal from three sides in cooperation with the pair of projecting portions. Further, the height of the other protrusions is equal to the height of the pair of protrusions.

  A coil bobbin device according to a third aspect is the coil bobbin device according to the second aspect, further comprising a groove formed between the projecting portion and the other projecting portion so as to surround a root portion of the terminal. And

  The coil bobbin device according to claim 4 is the coil bobbin device according to claim 3, wherein the width of the groove is larger than the diameter of the coil wire and smaller than three times the diameter of the coil wire.

  The coil bobbin device according to a fifth aspect is the coil bobbin device according to the fourth aspect, wherein the width of the groove is approximately twice the diameter of the coil wire.

  The coil bobbin device according to claim 6 is the coil bobbin device according to any one of claims 3 to 5, wherein the depth of the groove is larger than the diameter of the coil wire and three times the diameter of the coil wire. It is small.

  The coil bobbin device according to claim 7 is the coil bobbin device according to claim 6, wherein the depth of the groove is approximately twice the diameter of the coil wire.

  According to the coil bobbin device of the first aspect, since the heights of the pair of protrusions arranged side by side with the terminals sandwiched on the terminal part are equal, the coil wire can be easily placed at a desired position of the terminal by the guide of the protrusions. The coil wire can be wound around the terminal, and the coil wire can be prevented from being caught on the protruding portion, and the deformation of the substrate during soldering can be minimized. Wire breakage can be prevented.

  According to the coil bobbin device of the second aspect, the height of the other protrusions disposed on the terminal portion so as to surround the terminal from three sides in cooperation with the pair of protrusion portions is the height of the pair of protrusion portions. Therefore, the coil wire can be easily wound around the desired position of the terminal by guiding the protruding portion, and the coil wire is not caught on the protruding portion when the coil wire is wound around the terminal. It is possible to minimize the deformation of the substrate during soldering, thereby preventing the coil wire from being disconnected.

  According to the coil bobbin device of claim 3, since the groove portion formed between the protrusion and the other protrusion is provided so as to surround the base portion of the terminal, the coil when the coil wire is wound around the terminal The hook to the protrusion part of a line can be eliminated more.

  According to the coil bobbin device of claim 4, since the width of the groove portion is larger than the diameter of the coil wire and smaller than three times the diameter of the coil wire, the protruding portion of the coil wire when the coil wire is wound around the terminal As a result, it is possible to prevent the coil wire from being caught and to minimize the deformation of the substrate during soldering, thereby preventing the coil wire from being disconnected.

  According to the coil bobbin device of the fifth aspect, since the width of the groove is approximately twice the diameter of the coil wire, the coil wire is more reliably caught on the protruding portion when the coil wire is wound around the terminal. In addition, the deformation of the substrate during soldering can be minimized, thereby preventing the coil wire from being disconnected.

  According to the coil bobbin device of claim 6, since the depth of the groove is larger than the diameter of the coil wire and smaller than three times the diameter of the coil wire, the coil when the coil wire is wound around the terminal The hook to the protrusion part of a line can be eliminated.

  According to the coil bobbin device of the seventh aspect, since the depth of the groove is approximately twice the diameter of the coil wire, the coil wire is more reliably caught on the protruding portion when the coil wire is wound around the terminal. Can be eliminated.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing a schematic configuration of a coil bobbin device according to an embodiment of the present invention.

  In FIG. 1, a coil bobbin device 100 includes a cylindrical body 20, a coil 1 composed of a coil wire wound around the body 20, and ring-shaped flanges 2 formed at both ends of the body 20 in the axial direction. , 3 and an ear portion 10 connected to a part of the tangential surface of the flange 3 and protruding outward in the radial direction of the body portion 20.

  The coil bobbin device 100 also includes a terminal portion 4 which is a rectangular flat plate connected to the end portion of the ear portion 10 so as to protrude perpendicular to the flange 3 and to the outside of the trunk portion 20 in the axial direction, and perpendicular to the terminal portion 4 and The terminal portion 4 is provided with quadrangular columnar terminals 5 and 6 arranged in parallel in the circumferential direction of the body portion 20 so as to protrude outward in the radial direction of the body portion 20, and the terminals 5 and 6 are respectively the coils described above. One end and the other end of the wire are wound.

  FIG. 2 is a side view showing a schematic configuration of the coil bobbin device of FIG.

  In FIG. 2, the coil bobbin device 100 is perpendicular to the terminal portion 4 and in the radial direction of the trunk portion 20 so that the root portions of the terminals 5 and 6 are sandwiched from both sides in the circumferential direction of the trunk portion 20 on the terminal portion 4. The projecting portions 7a, 7b, 7c projecting to the outside and the terminal portions 4 on the terminal portion 4 cooperate with the projecting portions 7a, 7b, 7c so as to surround the respective base portions of the terminals 5, 6 from three sides, respectively. And a protruding portion 7 d that protrudes perpendicularly to the portion 4 and radially outward of the body portion 20. The protruding portions 7 a to 7 d are formed integrally with the terminal portion 4.

  The terminal portion 4 includes groove portions 8 and 9 provided between the protruding portions 7a to 7d so as to surround the base portions of the terminals 5 and 6 (FIG. 3).

  The terminals 5 and 6 are inserted into holes drilled in a substrate (not shown), and the terminals 5 and 6 and the holes are soldered by a soldering iron while the substrate is brought into contact with the protruding portion 7.

  4 is a side view showing a schematic configuration of the terminal portion in FIG. 1, and FIG. 5 is a top view showing a schematic configuration of the terminal portion in FIG.

  4 and 5, the diameter of the coil wire is W1, the width of the grooves 8 and 9 is W2, and the depth thereof is W3.

  At a position separated by W2 from the base part of the terminal 5, the projecting parts 7a, 7b, 7d cooperate to surround the base part of the terminal 5 from three directions, and the projecting parts 7a, 7b, 7d are Since the heights are equal to each other, when winding one end of the coil wire around the terminal 5, the coil wire can be easily placed at a desired position of the terminal 5 by guidance by the edge of the protruding portions 7 a, 7 b, 7 d on the groove 8 side. Can be wound. Similarly, in a position separated from the base portion of the terminal 6 by W2, the projecting portions 7b, 7c, 7d cooperate to surround the base portion of the terminal 6 from three directions, and further, the projecting portions 7b, 7c, Since 7d has the same height, when one end of the coil wire is wound around the terminal 6, the coil wire is placed at a desired position of the terminal 6 by guidance by the edge of the protruding portions 7b, 7c, 7d on the groove 9 side. Can be easily wound.

  At this time, the outermost diameter of the terminals 5 and 6 is increased by winding the coil wire, and the outermost diameter is further increased by soldering the wound coil wire. Therefore, the outermost diameters of the terminals 5 and 6 are finally increased by about twice the diameter W1 of the coil wire.

  Therefore, the width W2 of the groove portions 8 and 9 is approximately twice the coil wire diameter W1. Thus, when both ends of the coil wire are wound around the terminals 5 and 6, the coil wire has an edge on the groove 8 side of the protruding portions 7a and 7b, and an edge on the groove 9 side of the protruding portions 7b and 7c, respectively. It is possible to prevent the coil wire from being disconnected, thereby preventing the coil wire from being disconnected.

  Further, after the coil wire is wound around the terminals 5 and 6, the wound coil wire is accommodated in the groove portions 8 and 9 so as to fill the groove portions 8 and 9, respectively. The protrusions 7a and 7b can be more reliably prevented from being caught on the edge on the groove 8 side and on the edge on the groove 9 side of the protrusions 7b and 7c, thereby preventing the coil wire from being disconnected.

  In addition, when the width W2 of the groove portions 8 and 9 is large when the substrate and the terminals 5 and 6 are soldered with the soldering iron, the substrate is pressed into the groove portions 8 and 9 when the substrate is strongly pressed by the soldering iron. It will be deformed to fit.

  However, in the present embodiment, since the width W2 of the groove portions 8 and 9 is twice the coil wire diameter W1 and is not uselessly wide, the deformation of the base can be minimized.

  Further, the depth W3 of the groove portions 8 and 9 is substantially equal to the coil wire diameter W1. Thus, when the coil wires are wound around the terminals 5 and 6, respectively, the coil wires are respectively connected to the edges of the protrusions 7a and 7b on the groove 8 side and the edges of the protrusions 7b and 7c on the groove 9 side. You can eliminate the catch. Further, after being wound around the terminals 5 and 6, the wound coil wires are accommodated in the groove portions 8 and 9, respectively, and the groove portions 8 and 9 are filled with the coil wires, so that the coil wires are respectively protruding portions. It is possible to more reliably eliminate the hooks of the edges 7a, 7b on the groove 8 side and the edges of the protrusions 7b, 7c on the groove 9 side.

  In the present embodiment, the width W2 of the groove portions 8 and 9 is approximately twice the coil wire diameter W1. However, the width W2 of the groove portions 8 and 9 is larger than the coil wire diameter W1 and is not limited thereto. What is necessary is just to set so that it may become smaller than 3 times the wire diameter W1.

  In the present embodiment, the depth W3 of the groove portions 8 and 9 is substantially equal to the coil wire diameter W1, but not limited to this, the depth W3 of the groove portions 8 and 9 is equal to or greater than the coil wire diameter W1 and the coil wire. What is necessary is just to set so that it may become smaller than 3 times the diameter W1.

  In the present embodiment, the projecting portions 7a, 7b, and 7d cooperate to surround the base portion of the terminal 5 from three directions, and the projecting portions 7b, 7c, and 7d cooperate to provide the base portion of the terminal 6 in three directions. However, the present invention is not limited to surrounding from three sides, and may be any configuration as long as the terminals 5 and 6 are sandwiched from at least two opposite sides.

It is a perspective view showing a schematic structure of a coil bobbin device concerning an embodiment of the invention. It is a side view which shows schematic structure of the coil bobbin apparatus of FIG. It is a top view which shows schematic structure of the coil bobbin apparatus of FIG. It is a side view which shows schematic structure of the terminal part in FIG. It is a top view which shows schematic structure of the terminal part in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coil 2, 3 Head 4 Terminal part 5, 6 Terminal 7a, 7b, 7c, 7d Projection part 8, 9 Groove part 20 Trunk part 100 Coil bobbin apparatus

Claims (7)

  A cylindrical body around which the coil wire is wound, a pair of collars formed at both ends of the body, and one outer edge of the pair of collars, the end of the coil wire being wound A coil bobbin device comprising a terminal portion having a rotated terminal, wherein the device includes a pair of protrusions arranged side by side across the terminal on the terminal portion, and the heights of the pair of protrusions are equal to each other. Coil bobbin device.   The projection further includes another projection disposed on the terminal portion so as to surround the terminal from three sides in cooperation with the pair of projections, and the height of the other projection is the height of the pair of projections. The coil bobbin device according to claim 1, wherein the coil bobbin device is equal to a height.   The coil bobbin device according to claim 2, further comprising a groove formed between the projecting portion and the other projecting portion so as to surround a base portion of the terminal.   The coil bobbin device according to claim 3, wherein the width of the groove is larger than the diameter of the coil wire and smaller than three times the diameter of the coil wire.   The coil bobbin device according to claim 4, wherein the width of the groove is approximately twice the diameter of the coil wire.   The coil bobbin device according to any one of claims 3 to 5, wherein a depth of the groove portion is larger than a diameter of the coil wire and smaller than three times the diameter of the coil wire.   The coil bobbin device according to claim 6, wherein the depth of the groove is approximately twice the diameter of the coil wire.

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