JP4835401B2 - Flexible printed circuit board fixing structure - Google Patents

Flexible printed circuit board fixing structure Download PDF

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JP4835401B2
JP4835401B2 JP2006310693A JP2006310693A JP4835401B2 JP 4835401 B2 JP4835401 B2 JP 4835401B2 JP 2006310693 A JP2006310693 A JP 2006310693A JP 2006310693 A JP2006310693 A JP 2006310693A JP 4835401 B2 JP4835401 B2 JP 4835401B2
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circuit board
printed circuit
flexible printed
fixing structure
holder
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JP2008130617A (en
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聡 保坂
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NEC Corp
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NEC Corp
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Description

本発明は、電気部品同士を接続するために用いられるフレキシブルプリント基板の固定構造に関し、特に、固定作業が容易で固定強度に優れたフレキシブルプリント基板の固定構造に関する。   The present invention relates to a flexible printed circuit board fixing structure used for connecting electrical components, and more particularly to a flexible printed circuit board fixing structure that is easy to fix and has excellent fixing strength.

図６、図７は、従来のフレキシブルプリント基板の固定構造の斜視図である。また、図８は、従来のフレキシブルプリント基板固定構造の断面図である。
図６に示すように従来のフレキシブルプリント基板固定構造は、バネ接点を有する電気部品１とそれを保持固定するホルダ２、バネ接触にて電気部品１に接続可能なフレキシブルプリント基板３、バネのテンションを抑える補強板４とからなる。そして、ホルダ２の突起２ａ、２ｂにフレキシブルプリント基板３の穴３ａ、３ｂを差し込むことで電気部品１に対しての位置決めを行い、かつホルダの爪２ｃ、２ｄにてフレキシブルプリント基板３を固定することで、図７のようにフレキシブルプリント基板３がホルダ２に固定される。 6 and 7 are perspective views of a conventional flexible printed circuit board fixing structure. FIG. 8 is a cross-sectional view of a conventional flexible printed circuit board fixing structure.
As shown in FIG. 6, the conventional flexible printed circuit board fixing structure includes an electric component 1 having a spring contact, a holder 2 for holding and fixing it, a flexible printed circuit board 3 that can be connected to the electric component 1 by spring contact, and a spring tension. It consists of the reinforcement board 4 which suppresses. Then, the holes 3a and 3b of the flexible printed circuit board 3 are inserted into the protrusions 2a and 2b of the holder 2 to perform positioning with respect to the electric component 1, and the flexible printed circuit board 3 is fixed by the claws 2c and 2d of the holder. Thus, the flexible printed circuit board 3 is fixed to the holder 2 as shown in FIG.

フレキシブルプリント基板３の固定は、ホルダ２内に電気部品１を挿入してからホルダ２の突起２ａ、２ｂにフレキシブルプリント基板３の穴３ａ、３ｂを差し込むことで、電気部品１に対しての位置決めを行い、かつホルダ２の爪２ｃ、２ｄにフレキシブルプリント基板３の外形を引っかけるという手順で行う。   The flexible printed circuit board 3 is fixed by inserting the electrical component 1 into the holder 2 and then inserting the holes 3a, 3b of the flexible printed circuit board 3 into the protrusions 2a, 2b of the holder 2, thereby positioning the flexible printed circuit board 3 with respect to the electrical component 1. And the outer shape of the flexible printed circuit board 3 is hooked on the claws 2c and 2d of the holder 2.

しかし、ホルダ２側に爪２ｃ、２ｄを作るためには複雑な形状の金型が必要となることに加え、フレキシブルプリント基板３を２個以上の爪に引っかけて固定する作業の作業性が高くないという問題があった。   However, in order to make the claws 2c and 2d on the holder 2 side, a mold having a complicated shape is required, and the workability of fixing the flexible printed circuit board 3 by hooking it on two or more nails is high. There was no problem.

また、近年、折り畳み形態電話端末のような機器において、薄型化が急速に進んでおり、フレキシブルプリント基板の固定において、実装高さの制限により、従来構造の爪が設置できない場合が増えている。   In recent years, devices such as a folded telephone terminal have been rapidly reduced in thickness, and there is an increasing number of cases where conventional structures of nails cannot be installed due to restrictions in mounting height when fixing a flexible printed circuit board.

フレキシブルケーブルの固定に関する従来技術としては、特許文献１に開示される「フレキシブルプリント基板の取付構造」や特許文献２に開示される「補強板付きプリント配線板の製造方法」がある。
特許文献１に開示される発明は、フレキシブルケーブルの穴を取り囲むように補強用の銅箔パターンを形成することによって、若干大きいピンを穴に挿入したとしてもフレキシブルケーブルが破断しないようにしたものである。このような構造とすることにより、ホルダに爪を設けなくともフレキシブルケーブルを固定することができる。
特開平４−７２７８９号公報 Conventional techniques relating to fixing of a flexible cable include “a flexible printed circuit board mounting structure” disclosed in Patent Document 1 and “a method of manufacturing a printed wiring board with a reinforcing plate” disclosed in Patent Document 2.
In the invention disclosed in Patent Document 1, a reinforcing copper foil pattern is formed so as to surround the hole of the flexible cable so that the flexible cable does not break even if a slightly large pin is inserted into the hole. is there. By setting it as such a structure, a flexible cable can be fixed, without providing a nail | claw in a holder.
Japanese Unexamined Patent Publication No. 4-72789

しかし、特許文献１に開示される発明のように穴の周囲に補強用の銅箔パターンを設けると、フレキシブルケーブルの配線のレイアウトが制約を受けることとなるし、フレキシブル基板の小型化の妨げともなる。   However, if a reinforcing copper foil pattern is provided around the hole as in the invention disclosed in Patent Document 1, the layout of the wiring of the flexible cable is restricted, and miniaturization of the flexible substrate may be hindered. Become.

このように、従来はフレキシブルケーブルの小型化や配線レイアウトに支障をきたすことが無く、固定作業が容易で固定強度に優れたフレキシブルケーブルの固定構造は提供されていなかった。   Thus, conventionally, there has not been provided a flexible cable fixing structure that does not hinder downsizing and wiring layout of the flexible cable, is easy to fix, and has excellent fixing strength.

本発明は係る問題に鑑みてなされたものであり、フレキシブルケーブルの小型化や配線レイアウトに支障をきたすことが無く、固定作業が容易で固定強度に優れたフレキシブルケーブルの固定構造を提供することを目的とする。   The present invention has been made in view of the above problems, and provides a flexible cable fixing structure that does not hinder downsizing of the flexible cable and wiring layout, is easy to fix, and has excellent fixing strength. Objective.

本発明は、上記目的を達成するために、電子部品を収納する凹形状からなるホルダにフレキシブルプリント基板を固定する構造であって、前記ホルダは、外周壁の上面に少なくとも一つの突起を有し、前記フレキシブルプリント基板は、前記ホルダの前記突起に対応する各位置に前記突起よりも大きい穴を備えた補強板が張り付けられ、前記突起を前記フレキシブルプリント基板及び前記補強板の各穴に挿入したことを特徴とするフレキシブルプリント基板の固定構造を提供するものである。 In order to achieve the above object, the present invention is a structure in which a flexible printed circuit board is fixed to a concave holder for housing an electronic component, and the holder has at least one protrusion on an upper surface of an outer peripheral wall. the flexible printed circuit board, said reinforcing plate having a larger bore than the projections affixed to each position corresponding to the projection of the holder, and inserting the projection into the hole of the flexible printed circuit board and the reinforcing plate A flexible printed circuit board fixing structure is provided.

本発明の第１の態様においては、突起の断面形状と、フレキシブルプリント基板及び補強板の対応する穴の形状とが略相似であることが好ましい。また、ホルダの突起とフレキシブルプリント基板の穴と、補強板の穴との組を複数組有することが好ましい。   In the first aspect of the present invention, it is preferable that the cross-sectional shape of the protrusion is substantially similar to the shape of the corresponding hole in the flexible printed circuit board and the reinforcing plate. Moreover, it is preferable to have a plurality of sets of the projections of the holder, the holes of the flexible printed circuit board, and the holes of the reinforcing plate.

本発明の第１の態様の上記のいずれの構成においても、突起の断面形状が、正多角形であることがより好ましい。又は、突起の断面形状が、円形であることが好ましい。 In any of the above configurations of the first aspect of the present invention, the cross-sectional shape of the protrusion is more preferably a regular polygon. Or it is preferable that the cross-sectional shape of a processus | protrusion is circular.

本発明によれば、フレキシブルケーブルの小型化や配線レイアウトに支障をきたすことが無く、固定作業が容易で固定強度に優れたフレキシブルケーブルの固定構造を提供できる。   According to the present invention, it is possible to provide a flexible cable fixing structure that does not hinder downsizing of the flexible cable and the wiring layout, is easy to fix, and has excellent fixing strength.

〔第１の実施形態〕
本発明を好適に実施した第１の実施形態について説明する。
図１、２は本実施形態にかかるフレキシブルケーブル固定構造の斜視図である。また、図３は、本実施形態にかかるフレキシブルケーブル固定構造の断面図である。
図１に示すように、バネ接続を有する電気部品５、それを保持固定するホルダ６、バネ接触にて電気部品５に接続可能なフレキシブルケーブル７、及びバネのテンションを抑える補強板８とを有する。 [First Embodiment]
A first embodiment in which the present invention is suitably implemented will be described.
1 and 2 are perspective views of a flexible cable fixing structure according to the present embodiment. FIG. 3 is a cross-sectional view of the flexible cable fixing structure according to the present embodiment.
As shown in FIG. 1, it has the electrical component 5 which has a spring connection, the holder 6 which hold | maintains and fixes it, the flexible cable 7 which can be connected to the electrical component 5 by a spring contact, and the reinforcement board 8 which suppresses the tension | tensile_strength of a spring. .

まず、補強板８をフレキシブルケーブル７に対して全面を接着しておく。その後、図２に示すように、ホルダ６の突起６ａ、６ｂをフレキシブルケーブル７の穴７ａ、７ｂに差し込むことで、電気部品５に対してフレキシブルケーブル７の位置決めを行う。この際、フレキシブルケーブルの穴７ａ、７ｂにホルダ６の突起６ａ、６ｂを差し込むことで穴７ａ、７ｂが広がるが、これを戻そうとする力によってフレキシブルプリント基板７が固定維持される。   First, the entire surface of the reinforcing plate 8 is bonded to the flexible cable 7. Thereafter, as shown in FIG. 2, the flexible cable 7 is positioned with respect to the electrical component 5 by inserting the protrusions 6 a and 6 b of the holder 6 into the holes 7 a and 7 b of the flexible cable 7. At this time, by inserting the protrusions 6a and 6b of the holder 6 into the holes 7a and 7b of the flexible cable, the holes 7a and 7b widen, but the flexible printed circuit board 7 is fixed and maintained by a force for returning the holes 7a and 7b.

図３に示すように、フレキシブルプリント基板７の穴７ａ、７ｂの面積をホルダ６の突起６ａ、６ｂの断面積よりも若干小さく、補強板８の穴８ａ、８ｂの面積を突起６ａ、６ｂの断面積よりも若干大きくすることで、穴８ａと穴７ａ（又は、穴８ｂと７ｂ）の穴面積差分が、穴の広がりの制限となるため、組み立て分解の繰り返し挿抜においても、これ以上の広がりや亀裂が生じない耐久性のある構造となる。なお、ここでの「若干」に含まれる範囲は、フレキシブルプリント基板７の材料や厚さ、穴の形状及び大きさの組合せによって変動するが、フレキシブルプリント基板の穴は少なくともホルダの突起を挿入可能な大きさである。   As shown in FIG. 3, the areas of the holes 7a and 7b of the flexible printed circuit board 7 are slightly smaller than the cross-sectional areas of the protrusions 6a and 6b of the holder 6, and the areas of the holes 8a and 8b of the reinforcing plate 8 are the same as the protrusions 6a and 6b. By making it slightly larger than the cross-sectional area, the difference in the hole area between the hole 8a and the hole 7a (or the holes 8b and 7b) limits the expansion of the hole. The structure is durable and does not crack. Note that the range included in “slightly” varies depending on the combination of the material and thickness of the flexible printed circuit board 7 and the shape and size of the hole, but at least the protrusion of the holder can be inserted into the hole of the flexible printed circuit board. It is a big size.

フレキシブルプリント基板７には、破断防止のための銅箔パターンなどを設ける必要がないため、配線レイアウトの妨げとならず、小型化が可能である。
また、フレキシブルテーブルの厚さと同程度の高さで突起を設置できれば良いため、爪嵌合による従来の構造よりも実装高さの制限を受けにくい。なお、実装高さに制限が無ければ突起が高いほうがフレキシブルプリント基板及び補強板が外れにくいため、実装高さの制限の範囲内で、突起を高く形成することが好ましい。 Since it is not necessary to provide the flexible printed circuit board 7 with a copper foil pattern or the like for preventing breakage, the wiring layout is not hindered and the size can be reduced.
In addition, since it is sufficient that the protrusions can be installed at a height similar to the thickness of the flexible table, the mounting height is less restricted than the conventional structure by claw fitting. If there is no restriction on the mounting height, the higher the protrusion, the harder the flexible printed board and the reinforcing plate can be removed. Therefore, it is preferable that the protrusion is formed higher within the range of the mounting height.

このように、本実施形態にかかるフレキシブルプリント基板の固定構造は、爪嵌合が不要となるため固定作業が容易であるとともに、組み立て分解の繰り返しにより突起を挿抜しても耐久性を有する。   As described above, the flexible printed circuit board fixing structure according to the present embodiment eliminates the need for nail fitting, so that the fixing work is easy, and it is durable even when the protrusion is inserted and removed by repeated assembly and disassembly.

〔第２の実施形態〕
本発明を好適に実施した第２の実施形態について説明する。
図４に本実施形態にかかるフレキシブルプリント基板の固定構造を示す。ホルダ９の突起形状９ａ、９ｂとフレキシブルプリント基板１０の穴１０ａ、１０ｂとの断面形状が矩形となっている。 [Second Embodiment]
A second embodiment in which the present invention is suitably implemented will be described.
FIG. 4 shows a flexible printed circuit board fixing structure according to this embodiment. The cross-sectional shapes of the protrusion shapes 9a and 9b of the holder 9 and the holes 10a and 10b of the flexible printed circuit board 10 are rectangular.

本実施形態においては、フレキシブルプリント基板１０の穴１０ａ及び１０ｂのいずれかをホルダ９の突起９ａ、９ｂと嵌合させると、フレキシブルプリント基板１０の回転が規制される。よって、第１の実施形態のように突起及び穴の断面形状が円形の場合よりもフレキシブルプリント基板１０の位置決め及び固定が容易となり、組み立て時の作業性が向上する。   In the present embodiment, when any one of the holes 10a and 10b of the flexible printed circuit board 10 is fitted to the protrusions 9a and 9b of the holder 9, the rotation of the flexible printed circuit board 10 is restricted. Therefore, the flexible printed circuit board 10 can be positioned and fixed more easily than the case where the cross-sectional shapes of the protrusions and holes are circular as in the first embodiment, and the workability during assembly is improved.

なお、突起９ａ、９ｂや穴１０ａ、１０ｂの角の部分を丸めておくと、突起を穴に挿入した際に穴の角部に応力が集中しないため、フレキシブルプリント基板が破断しにくくなる。
ここでは突起及び穴の形状を矩形としたが、任意の多角形であっても同様の効果が得られることは言うまでもない。この場合には、正多角形状とすると、突起がフレキシブルプリント基板の穴を全周にわたって均等に押し広げるため好ましい。 If the corners of the protrusions 9a and 9b and the holes 10a and 10b are rounded, stress is not concentrated on the corners of the holes when the protrusions are inserted into the holes, so that the flexible printed board is not easily broken.
Although the shape of the protrusion and the hole is rectangular here, it is needless to say that the same effect can be obtained even if it is an arbitrary polygon. In this case, a regular polygonal shape is preferable because the protrusions uniformly spread the hole of the flexible printed board over the entire circumference.

この他については上記第１の実施形態と同様であるため、重複する説明は省略する。   Since other aspects are the same as those in the first embodiment, a duplicate description is omitted.

なお、上記各実施形態は本発明の好適な実施の一例であり、本発明はこれに限定されることはない。
例えば、上記各実施形態では、突起の断面形状と穴の形状とが略同一である場合を例としたが、これに限定されることはない。一例を挙げると、図５に示すように、突起が星形の場合には、穴は凸となる頂点を結んだ五角形状とすれば上記各実施形態と同様の効果が得られる。
このように本発明は様々な変形が可能である。 Each of the above embodiments is an example of a preferred embodiment of the present invention, and the present invention is not limited to this.
For example, in each of the above embodiments, the case where the cross-sectional shape of the protrusion and the shape of the hole are substantially the same is taken as an example, but the present invention is not limited to this. For example, as shown in FIG. 5, when the projection is a star shape, the same effect as in the above embodiments can be obtained if the hole has a pentagonal shape connecting convex vertices.
Thus, the present invention can be variously modified.

本発明を好適に実施した第１の実施形態にかかるフレキシブルプリント基板の固定構造の分解斜視図である。It is a disassembled perspective view of the fixing structure of the flexible printed circuit board concerning 1st Embodiment which implemented this invention suitably. 第１の実施形態にかかるフレキシブルプリント基板固定構造の斜視図である。It is a perspective view of the flexible printed circuit board fixing structure concerning a 1st embodiment. 第１の実施形態にかかるフレキシブルプリント基板固定構造の要部断面図である。It is principal part sectional drawing of the flexible printed circuit board fixing structure concerning 1st Embodiment. 本発明を好適に実施した第２の実施形態にかかるフレキシブルプリント基板の固定構造の斜視図である。It is a perspective view of the fixation structure of the flexible printed circuit board concerning 2nd Embodiment which implemented this invention suitably. 断面形状が星形の突起と、五角形状の穴との組合せたフレキシブルプリント基板の固定構造を示す図である。It is a figure which shows the fixing structure of the flexible printed circuit board which the cross-sectional shape combined with the star-shaped protrusion and the pentagonal hole. 従来のフレキシブルプリント基板の固定構造の分解斜視図である。It is a disassembled perspective view of the fixing structure of the conventional flexible printed circuit board. 従来のフレキシブルプリント基板の固定構造の斜視図である。It is a perspective view of the fixing structure of the conventional flexible printed circuit board. 従来のフレキシブルプリント基板固定構造の断面図である。It is sectional drawing of the conventional flexible printed circuit board fixing structure.

符号の説明Explanation of symbols

１、５ 電気部品
２、６、９ ホルダ
２ａ、２ｂ、６ａ、６ｂ、９ａ、９ｂ 突起
３、７、１０ フレキシブルプリント基板
３ａ、３ｂ、７ａ、７ｂ、１０ａ、１０ｂ 穴
４、８ 補強板 1, 5 Electrical component 2, 6, 9 Holder 2a, 2b, 6a, 6b, 9a, 9b Protrusion 3, 7, 10 Flexible printed circuit board 3a, 3b, 7a, 7b, 10a, 10b Hole 4, 8 Reinforcing plate

Claims (5)

電子部品を収納する凹形状からなるホルダにフレキシブルプリント基板を固定する構造であって、
前記ホルダは、外周壁の上面に少なくとも一つの突起を有し、
前記フレキシブルプリント基板は、前記ホルダの前記突起に対応する各位置に前記突起よりも大きい穴を備えた補強板が張り付けられ、
前記突起を前記フレキシブルプリント基板及び前記補強板の各穴に挿入したことを特徴とするフレキシブルプリント基板の固定構造。 It is a structure for fixing a flexible printed circuit board to a concave holder for storing electronic components,
The holder has at least one protrusion on the upper surface of the outer peripheral wall ,
The flexible printed circuit board, a reinforcing plate having a larger hole than the projection at each position corresponding to the projection of the holder is affixed,
A fixing structure for a flexible printed circuit board, wherein the protrusion is inserted into each hole of the flexible printed circuit board and the reinforcing plate. 前記突起の断面形状と、前記フレキシブルプリント基板及び前記補強板の対応する穴の形状とが略相似であることを特徴とする請求項１記載のフレキシブルプリント基板の固定構造。   2. The flexible printed circuit board fixing structure according to claim 1, wherein a cross-sectional shape of the protrusion and a shape of a corresponding hole of the flexible printed circuit board and the reinforcing plate are substantially similar. 前記ホルダの突起と前記フレキシブルプリント基板の穴と、前記補強板の穴との組を複数組有することを特徴とする請求項１又は２記載のフレキシブルプリント基板の固定構造。   The flexible printed circuit board fixing structure according to claim 1, wherein a plurality of sets of the projection of the holder, the hole of the flexible printed circuit board, and the hole of the reinforcing plate are provided. 前記突起の断面形状が、正多角形であることを特徴とする請求項１から３のいずれか１項記載のフレキシブルプリント基板の固定構造。 The cross-sectional shape of the projections, the fixing structure of the flexible printed circuit board according to any one of claims 1 to 3, characterized in that the regular polygon. 前記突起の断面形状が、円形であることを特徴とする請求項１から３のいずれか１項記載のフレキシブルプリント基板の固定構造。   The flexible printed circuit board fixing structure according to any one of claims 1 to 3, wherein a cross-sectional shape of the protrusion is circular.
JP2006310693A 2006-11-16 2006-11-16 Flexible printed circuit board fixing structure Expired - Fee Related JP4835401B2 (en)

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