JP2007324435A - Control board for electric apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control board for electric apparatus wherein a choke coil is easily fixed to a printed board without fail. <P>SOLUTION: Related to the control board for electric apparatus wherein the printed board 5 is mounted with the choke coil 1, in the choke coil 1 an approximately center part of a core 3 on which a coil 2 is wound has a through-hole 4, and a part of the printed board 5 facing the through-hole 4 has a hole 6. With the use of a fastening member 8 inserted through the through-hole 4 and the hole 6, the choke coil 1 is fixed to the printed board 5. The fastening member 8 integrally has a flange 9 contacting to an upper hole edge of the through-hole 4 on one end, and a deformable engaging part 10 engaging with a lower hole edge of the hole 6 of the printed board 5 on the other end. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a control board of an electric device in which a choke coil is fixed to a printed board.

  Conventionally, in order to fix the choke coil to this type of printed circuit board, the terminals of the choke coil are soldered by being inserted into the terminal holes of the printed circuit board (see, for example, Patent Document 1). At this time, a heat-resistant adhesive such as a silicon putty is applied between the choke coil and the printed board, and the silicon putty is fixed to fix the choke coil and the printed board.

FIG. 9 shows an example using such a heat-resistant adhesive. As shown in FIG. 9, after a choke coil 23 in which a coil 22 is wound around a core 21 having an insulating means is disposed on a printed circuit board 24. Then, the coil 22 was pulled out, inserted into the printed circuit board 24 and soldered, and then a silicon putty 25 was applied between the choke coil 23 and the printed circuit board 24 and solidified to fix them.
Japanese Utility Model Publication No. 06-50327

  However, in the conventional configuration, since there are two places penetrating the printed circuit board, it is unstable until soldering is performed, and when the silicon putty is used in this state, the position is reached by the time it hardens. There is a possibility of shifting.

  When a choke coil is installed on the same printed circuit board that uses high-voltage components, the positional displacement of the choke coil as described above will prevent the insulation distance from the high-voltage components from being maintained, causing serious problems such as short circuits. It had a problem to cause.

  An object of the present invention is to solve the above-described conventional problems, and to provide a control board for an electric device that easily fixes a choke coil to a printed board.

  In order to solve the above-described conventional problems, a control board of an electric device according to the present invention includes a printed board and a choke coil attached to the printed board, and the choke coil has a substantially central portion of a core around which the coil is wound. A through hole portion, a hole is provided in a portion facing the through hole portion of the printed circuit board, and a choke coil is fixed to the printed circuit board with a fastening member inserted through the through hole portion and the hole, The fastening member has a flange that abuts the upper hole edge of the through hole at one end, and a deformable engaging portion that engages the lower hole edge of the hole of the printed circuit board at the other end. Therefore, the choke coil and the printed board can be fixed easily and reliably.

  According to the present invention, the choke coil and the printed board can be easily and reliably fixed, and the performance as the control board can be exhibited well.

1st invention is equipped with the printed circuit board and the choke coil with which the said printed circuit board was mounted | worn, a through-hole part is provided in the approximate center part of the core which wound the coil in the said choke coil, The said through-hole of the said printed circuit board A hole is provided in each of the portions facing the portion, and the choke coil is fixed to the printed circuit board by a fastening member inserted through the through-hole portion and the hole, and the fastening member has an upper portion of the through-hole portion at one end. The flange abutting against the hole edge is integrally provided with a deformable engaging portion that engages with the lower hole edge of the hole of the printed board at the other end.

  In the second invention, the engaging portion of the fastening member of the first invention is constituted by a split groove and a plurality of claws.

  3rd invention is equipped with the printed circuit board and the choke coil with which the said printed circuit board was mounted | worn, A through-hole part is provided in the substantially center part of the core which wound the coil in the said choke coil, The said through-hole of the said printed circuit board A hole is provided in each of the portions facing the portion, and the choke coil is fixed to the printed circuit board by a fastening member inserted through the through-hole portion and the hole, and the fastening member has an upper portion of the through-hole portion at one end. A flange that abuts either the hole edge or the lower hole edge of the printed circuit board hole is heat-welded to the other of the upper hole edge of the through hole portion or the lower hole edge of the printed circuit board hole at the other end. The heat welded part is integrally formed.

  4th invention is equipped with the printed circuit board and the choke coil with which the said printed circuit board was mounted | worn, A through-hole part is provided in the substantially central part of the core which wound the coil in the said choke coil, The said through-hole of the said printed circuit board A hole is provided in each of the portions facing the portion, the choke coil is fixed to the printed circuit board with a fastening member inserted through the through-hole portion and the hole, and the outer diameter of the fastening member is the through-hole portion and The printed circuit board and the choke coil were integrated by friction by being press-fitted into the through-holes and the holes as substantially the same as the holes.

  Therefore, according to these first to fourth inventions, the choke coil and the printed board can be fixed easily and reliably.

  According to a fifth invention, in the first to fourth inventions, the through hole portion of the choke coil is constituted by a central hole of a core around which the coil is wound.

  A sixth invention is the first to fourth inventions, wherein the choke coil includes a core, a core cover covering the core, and a coil wound around the core cover, and a cylindrical portion is provided in the center of the core cover, This was set as a through hole.

  In a seventh aspect based on the first to fourth aspects, the choke coil includes a core, a core cover covering the core, and a coil wound around the core cover, and a slit is formed in the core and the core cover. did.

  According to an eighth aspect of the present invention, in the first to fourth aspects of the invention, the choke coil is soldered by penetrating the end of the coil wound around the core into the printed circuit board.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 and 2, a through-hole portion 4 is formed at a substantially central portion of a core 3 around which a coil 2 of the choke coil 1 is wound, and a printed circuit board 5 to which the choke coil 1 is attached includes A hole 6 is provided corresponding to the through-hole portion 4.

  Both ends of the coil 2 penetrate through the printed circuit board 5 and are connected to predetermined locations on the back side thereof via solder 7.

  A fastening member 8 that passes through the through-hole portion 4 of the choke coil 1 and the hole 6 of the printed circuit board 5 and fixes both is formed of plastics, and has a flange 9 that is larger in diameter than the through-hole portion 4 at one end. However, an engaging portion 10 having a diameter larger than that of the hole 6 in the free state is integrally formed at the other end.

  The engaging portion 10 has a structure in which a plurality of claws 12 are arranged with a split groove 11 therebetween, and by deforming the claws 12 inward against elasticity, an outer diameter connecting the outer sides of the claws 12 is increased. It can be made smaller than the hole 6.

  Therefore, when the fastening member 8 is inserted into the through-hole portion 4 of the choke coil 1 and the hole 6 of the printed circuit board 5, the engaging portion 10 once passes through the through-hole portion 4 and the hole 6 in a reduced diameter state, and finally When it passes through the hole 6, it returns to its original outer diameter and engages with the hole edge of the hole 6 on the back side of the printed circuit board 5.

  On the other hand, the flange 9 abuts on the upper surface of the choke coil 1 and the hole edge of the through hole 4.

  As a result, the choke coil 1 is fixed while being pressed against the printed circuit board 5.

  Thus, by providing the printed board 5 with a hole 6 having a diameter larger than that of the through hole 4 at the substantially central portion of the choke coil 1, the fastening member 8 has the same shape as the through hole 4 of the choke coil 1. The fastening member 8 having high component strength can be used, and the choke coil 1 and the printed circuit board 5 can be easily and reliably fixed only by the fastening member 8.

  Since the choke coil 1 can be installed horizontally without being displaced with respect to the printed circuit board 5, it is easy to determine the position where the choke coil 1 is placed on the printed circuit board 5.

(Embodiment 2)
3 and 4 show the second embodiment. In the choke coil 1 in which the coil 2 is wound around the core cover 13 covering the core 3, the cylindrical portion of the core cover 13 is used as the central through hole portion 4 and the fastening member 8 is used. It is for inserting.

  In addition, the same code | symbol is attached | subjected about the structure which performs the same effect | action as FIG. 1, 2, and the thing of Embodiment 1 was used for description.

  In the second embodiment, the choke coil 1 can be easily and reliably fixed to the printed circuit board 5 as in the first embodiment.

(Embodiment 3)
FIG. 5 shows Embodiment 3 in which the type of choke coil 1 is changed. That is, the slits 14 are provided in the core 3 and the core cover 13.

  In addition, the same code | symbol is attached | subjected about the structure which performs the same effect as FIGS. 1-4, and the thing of Embodiment 1, 2 was used for description.

  In the third embodiment, the choke coil 1 can be easily and reliably fixed to the printed circuit board 5 as in the first and second embodiments.

(Embodiment 4)
FIG. 6 shows the fourth embodiment, and the choke coil 1 and the printed board 5 can be fixed in the shape of the choke coil 1 in which the coil 2 is wound around the core 3 as in the first embodiment.

(Embodiment 5)
FIG. 7 shows the fifth embodiment, in which the engagement member 15 is formed by thermally melting the tip of the fastening member 8.

  That is, in the present embodiment, the fastening member 8 is formed to be long so that the tip protrudes from the hole 6 of the printed circuit board 5, and the protruding portion is heat-melted to have a large diameter, thereby forming the engaging portion 15. It is.

  In the sixth embodiment, the choke coil 1 can be easily and reliably fixed to the printed circuit board 5 as in the fifth embodiment.

(Embodiment 6)
FIG. 8 shows a sixth embodiment, in which the outer diameter of the fastening member 8 is the same diameter as the through-hole portion 4 of the choke coil 1 and the hole 6 of the printed circuit board 5 and is press-fitted into the through-hole portion 4 and the hole 6. It is a thing.

  Therefore, the choke coil 1 is fixed to the printed circuit board 5 by frictional engagement by press-fitting the through-hole portion 4 and the hole 6 of the fastening member 8.

  As described above, in the control board of the electric device according to the present invention, the position of the choke coil and the printed board can be easily shifted by engaging the fastening member inserted through the through hole portion of the choke coil with the hole of the printed board. Since it can be fixed without any problem, it can be applied to various electric devices.

The longitudinal cross-sectional view of the control board of the electric equipment in Embodiment 1 of this invention Cross section Longitudinal sectional view of a control board of an electric device in Embodiment 2 of the present invention Cross section Cross-sectional view of the control board of the electric equipment in Embodiment 3 of the present invention The perspective view of the control board of the electric equipment in Embodiment 4 of this invention (A) Sectional view at the time of manufacture of the control board of the electric equipment in Embodiment 5 of this invention, (b) Sectional view at the time of completion A longitudinal sectional view of a control board of an electric device in Embodiment 6 of the present invention Sectional drawing which shows the control board of the conventional electric appliance

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Choke coil 2 Coil 3 Core 4 Through-hole part 5 Printed circuit board 6 Hole 8 Fastening member 9 Flange 10 Engagement part 11 Split groove 12 Claw 13 Core cover 14 Slit

Claims (8)

A printed circuit board, and a choke coil mounted on the printed circuit board, wherein the choke coil has a through hole at a substantially central portion of the core around which the coil is wound, and a portion facing the through hole of the printed circuit board. Each of the holes is provided with a through-hole portion and a fastening member inserted through the hole to fix the choke coil to the printed circuit board, and the fastening member has a flange that abuts the upper hole edge of the through-hole portion at one end. The control board of the electric equipment which integrally has a deformable engaging part which engages with the lower hole edge of the hole of the printed circuit board at the other end. 2. The control board for an electric device according to claim 1, wherein the engaging portion of the fastening member is composed of a split groove and a plurality of claws. A printed circuit board, and a choke coil mounted on the printed circuit board, wherein the choke coil has a through hole at a substantially central portion of the core around which the coil is wound, and a portion facing the through hole of the printed circuit board. Each of the through holes and a fastening member inserted through the hole to fix the choke coil to the printed circuit board, and the fastening member has an upper hole edge of the through hole at one end or the printed circuit board. A flange that abuts one of the lower hole edges of the hole, and a heat-welded part that is heat-welded to either the upper hole edge of the through-hole part or the lower hole edge of the printed circuit board hole at the other end A control board for electrical equipment. A printed circuit board, and a choke coil mounted on the printed circuit board, wherein the choke coil has a through hole at a substantially central portion of the core around which the coil is wound, and a portion facing the through hole of the printed circuit board. Each of which is provided with a hole, the choke coil is fixed to the printed circuit board by a fastening member inserted through the through-hole portion and the hole, and the outer diameter of the fastening member is substantially the same as the through-hole portion and the hole. A control board for electrical equipment that press-fits through holes and holes and integrates the printed circuit board and the choke coil by friction. The control board of the electric equipment according to any one of claims 1 to 4, wherein the through-hole portion of the choke coil is configured by a central hole of a core around which the coil is wound. The choke coil includes a core, a core cover that covers the core, and a coil wound around the core cover, and a cylindrical portion is provided in the center of the core cover, which is set as a through-hole portion. 2. A control board for an electrical device according to item 1. 5. The electric device according to claim 1, wherein the choke coil includes a core, a core cover that covers the core, and a coil wound around the core cover, and a slit is formed in the core and the core cover. Control board. The control board of the electric equipment according to any one of claims 1 to 4, wherein the choke coil is soldered by penetrating an end of the coil wound around the core through the printed board.

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