JP2009231472A - Electronic apparatus - Google Patents

Electronic apparatus Download PDF

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Publication number
JP2009231472A
JP2009231472A JP2008073958A JP2008073958A JP2009231472A JP 2009231472 A JP2009231472 A JP 2009231472A JP 2008073958 A JP2008073958 A JP 2008073958A JP 2008073958 A JP2008073958 A JP 2008073958A JP 2009231472 A JP2009231472 A JP 2009231472A
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screw
circuit board
case
lower case
screwed
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JP2008073958A
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Japanese (ja)
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Hiroshi Yuguchi
洋史 湯口
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Toyota Industries Corp
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Toyota Industries Corp
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Priority to JP2008073958A priority Critical patent/JP2009231472A/en
Publication of JP2009231472A publication Critical patent/JP2009231472A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus capable of preventing chips from entering a case when a screw is tightened. <P>SOLUTION: A circuit board 10 is secured to a lower case 20 using a first screw Sc1. A circuit board attaching pedestal 23 formed by drawing which protrudes toward the inside of the case is formed on a side edge. A first female thread 24b in which the first screw Sc1 is screwed is formed on the side of a throttled space S1 formed by drawing at the circuit board attaching pedestal 23. An attaching plate 25 having a second female thread 26b in which a second screw Sc2 is screwed is fixed to the side of the drawing space S1 in such a state that it is positioned at a side opening of the throttled space S1. The lower case 20 is secured to an upper case 30 using the second screw Sc2, and a through-hole 33 through which the second screw Sc2 screwed into the second female thread part 26b of the attaching plate 25 passes is formed at the side edge. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、電子機器に関するものである。   The present invention relates to an electronic device.

電子機器における筐体構造が、例えば特許文献１等に開示されている。特許文献１においては、回路基板を収納するための筐体がベース部材とケースにより構成され、第１のタッピングねじを回路基板の下面側から回路基板の貫通孔を挿通してケースの取付部の雌ねじ部に螺入することにより回路基板がケース内に固定されている。また、第２のタッピングねじをケースの外側からケースの貫通孔を通してベース部材の取付板部の雌ねじ部に螺入することによりケースとベース部材が締結されている。
特開２００２−３３５０８４号公報 A housing structure in an electronic device is disclosed in, for example, Patent Document 1. In Patent Document 1, a housing for housing a circuit board is configured by a base member and a case, and a first tapping screw is inserted through a through-hole of the circuit board from the lower surface side of the circuit board to The circuit board is fixed in the case by being screwed into the female screw portion. Further, the case and the base member are fastened by screwing the second tapping screw from the outside of the case into the female screw portion of the mounting plate portion of the base member through the through hole of the case.
JP 2002-335084 A

ところが、ねじ締結時において切粉が筐体内に入ってしまう。詳しくは、第１のタッピングねじを回路基板の貫通孔を挿通してケースの取付部の雌ねじ部に螺入する際、および、第２のタッピングねじをベース部材の取付板部の雌ねじ部に螺入する際に、雌ねじ部から切粉が発生してこの切粉が筐体内に残ってしまう。   However, when the screw is tightened, chips enter the housing. Specifically, when the first tapping screw is inserted through the through hole of the circuit board and screwed into the female screw portion of the mounting portion of the case, the second tapping screw is screwed into the female screw portion of the mounting plate portion of the base member. When entering, chips are generated from the internal thread portion, and the chips remain in the housing.

本発明は、このような背景の下になされたものであり、その目的は、ねじ締結時の切粉がケース内部に入ることを防止できる電子機器を提供することにある。   The present invention has been made under such a background, and an object of the present invention is to provide an electronic device that can prevent chips from entering a case when screws are fastened.

請求項１に記載の発明では、電子部品を実装した回路基板と、上面が開口する箱型をなし、内部に前記回路基板を収納するための下ケースと、下面が開口する箱型をなし、前記下ケースの開口部を塞ぐように前記下ケースの上に配置され前記下ケースと共に内部に前記回路基板を収納するための上ケースとを備えた電子機器において、前記下ケースと前記上ケースの一方は、前記回路基板が第１のねじにて締結されるものであり、側縁にはケース内方に突出する絞り加工による回路基板取付用台座が形成され、当該回路基板取付用台座における前記絞り加工により得られた絞り空間側に前記第１のねじが螺入する第１の雌ねじ部が設けられ、かつ、前記絞り空間側に第２のねじが螺入する第２の雌ねじ部を設けた締結用板材が前記絞り空間の側面開口部に位置する状態で固定され、前記下ケースと前記上ケースの他方は、前記下ケースと前記上ケースの一方が前記第２のねじにて締結されるものであり、側縁には前記締結用板材の第２の雌ねじ部に螺入される前記第２のねじが通る貫通孔が形成されていることを要旨とする。   In the first aspect of the present invention, a circuit board on which electronic components are mounted, a box shape having an upper surface opened, a lower case for housing the circuit board therein, and a box shape having a lower surface opened, In an electronic apparatus that is disposed on the lower case so as to close the opening of the lower case and includes an upper case for housing the circuit board together with the lower case, the lower case and the upper case One of the circuit boards is fastened with a first screw, and a circuit board mounting base is formed on the side edge by drawing to project inward of the case, and the circuit board mounting base in the circuit board mounting base A first female screw portion into which the first screw is screwed is provided on the drawing space side obtained by drawing, and a second female screw portion into which the second screw is screwed is provided on the drawing space side. The fastening plate material is The other one of the lower case and the upper case is fixed by a second screw, and the other one of the lower case and the upper case is fastened by the second screw. The gist is that a through hole through which the second screw threaded into the second female thread portion of the fastening plate member passes is formed.

請求項１に記載の発明によれば、下ケースと上ケースの一方について、側縁にはケース内方に突出する絞り加工による回路基板取付用台座が形成され、回路基板取付用台座における絞り加工により得られた絞り空間側に第１の雌ねじ部に設けられ、第１のねじが第１の雌ねじ部に螺入されて回路基板が締結されている。このねじ締結時において第１のねじが第１の雌ねじ部に螺入される際に切粉が発生するが、切粉はケース外部である絞り空間に出て、ケース内部には入らない。   According to the first aspect of the present invention, for one of the lower case and the upper case, a circuit board mounting pedestal is formed on the side edge of the circuit board mounting base so as to protrude inward of the case. The first female screw portion is provided on the diaphragm space side obtained by the above, the first screw is screwed into the first female screw portion, and the circuit board is fastened. When this screw is tightened, chips are generated when the first screw is screwed into the first female thread portion, but the chips exit into the throttle space outside the case and do not enter the case.

また、下ケースと上ケースの他方について、側縁には貫通孔が形成されており、この貫通孔を通して第２のねじが締結用板材の第２の雌ねじ部に螺入されて下ケースと上ケースの一方が締結されている。このねじ締結時において第２のねじが締結用板材の第２の雌ねじ部に螺入される際に切粉が発生するが、切粉はケース外部である絞り空間に出て、ケース内部には入らない。   In addition, a through hole is formed in the side edge of the other of the lower case and the upper case, and the second screw is screwed into the second female thread portion of the fastening plate through the through hole and the lower case and the upper case are inserted. One side of the case is fastened. When this screw is tightened, chips are generated when the second screw is screwed into the second female thread portion of the fastening plate, but the chips come out in the throttle space outside the case, and inside the case not enter.

本発明によれば、ねじ締結時の切粉がケース内部に入ることを防止できる。   ADVANTAGE OF THE INVENTION According to this invention, the chip at the time of screw fastening can prevent entering into a case inside.

以下、本発明を具体化した一実施形態を図面に従って説明する。
図１は、本実施の形態における電子機器１の斜視図である。図２は、電子機器１の分解斜視図である。図３は、図１の電子機器１の下面図、即ち、Ａ矢視図である。図４は、図１の電子機器１の正面図、即ち、Ｂ矢視図である。図５は、電子機器１を構成する下ケース２０の分解斜視図である。図６は図３のＡ−Ａ線での要部拡大断面図である。 DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 is a perspective view of an electronic device 1 in the present embodiment. FIG. 2 is an exploded perspective view of the electronic device 1. FIG. 3 is a bottom view of the electronic device 1 of FIG. 4 is a front view of the electronic apparatus 1 of FIG. FIG. 5 is an exploded perspective view of the lower case 20 constituting the electronic device 1. 6 is an enlarged cross-sectional view of a main part taken along line AA in FIG.

本実施の形態における電子機器１は車載用電力変換器（インバータ）である。
図２において、電子機器１は、回路基板１０と、金属板よりなるケース（筐体）を備えており、ケースは下ケース２０と上ケース３０により構成されている。下ケース２０は、回路基板１０を収納するためのものであり、上ケース３０は側縁部が下ケース２０の側縁部と重なるようにして下ケース２０と共に回路基板１０を内部に収納するためのものである。 Electronic device 1 in the present embodiment is an in-vehicle power converter (inverter).
In FIG. 2, the electronic device 1 includes a circuit board 10 and a case (housing) made of a metal plate, and the case includes a lower case 20 and an upper case 30. The lower case 20 is for housing the circuit board 10, and the upper case 30 is for housing the circuit board 10 together with the lower case 20 so that the side edge overlaps the side edge of the lower case 20. belongs to.

回路基板１０について、回路基板１０には各種の電子部品（図示略）が実装されている。
下ケース２０について、図５に示すように、板金製の下ケース２０は、全体形状として上面が開口した箱型をなしている。詳しくは、長方形状の底板２１の外周縁から側板２２が上方に延びている。側縁にはケース内方に突出する絞り加工による回路基板取付用台座２３が形成されている。回路基板取付用台座２３は、底板２１と側板２２とでなす角部における、長方形状の底板２１の四隅および長辺の中央部に形成されている。この回路基板取付用台座２３は、下ケース２０の側面および底面から絞られており、これにより側面および底面が開放（開口）している。図６に示す回路基板取付用台座２３の形成箇所の拡大図において、回路基板取付用台座２３の上面２３ａは水平面となっている。回路基板取付用台座２３の上面２３ａに回路基板１０が搭載されている。絞り加工による回路基板取付用台座２３について、素板をパンチでダイスに押し込んで成形されるが、パンチのあった箇所が絞り加工により得られた絞り空間Ｓ１となる。 With respect to the circuit board 10, various electronic components (not shown) are mounted on the circuit board 10.
About the lower case 20, as shown in FIG. 5, the lower case 20 made of sheet metal has a box shape with an upper surface opened as an overall shape. Specifically, the side plate 22 extends upward from the outer peripheral edge of the rectangular bottom plate 21. A circuit board mounting base 23 is formed on the side edge by drawing to project inward of the case. The circuit board mounting base 23 is formed at the corners formed by the bottom plate 21 and the side plates 22 at the four corners of the rectangular bottom plate 21 and at the center of the long side. The circuit board mounting base 23 is narrowed down from the side surface and the bottom surface of the lower case 20, and the side surface and the bottom surface are thereby opened (opened). In the enlarged view of the formation place of the circuit board mounting base 23 shown in FIG. 6, the upper surface 23a of the circuit board mounting base 23 is a horizontal plane. The circuit board 10 is mounted on the upper surface 23 a of the circuit board mounting base 23. The circuit board mounting base 23 by drawing is formed by pressing the base plate into a die with a punch, and the punched portion becomes the drawing space S1 obtained by drawing.

また、回路基板取付用台座２３の上面２３ａにおいて、バーリングねじ２４が下方に突出するように形成されている。つまり、回路基板取付用台座２３の上面２３ａから下方に向けて突出する筒部２４ａが絞り加工により形成され、この筒部２４ａの内面には第１の雌ねじ部２４ｂが形成されている。このように、絞り空間Ｓ１側に第１の雌ねじ部２４ｂが設けられている。そして、第１のねじＳｃ１が、回路基板１０の上方から回路基板１０に形成された貫通孔１１を通してバーリングねじ２４に螺入されて回路基板１０が締結されている。   Further, a burring screw 24 is formed on the upper surface 23a of the circuit board mounting base 23 so as to protrude downward. That is, a cylindrical portion 24a protruding downward from the upper surface 23a of the circuit board mounting base 23 is formed by drawing, and a first female screw portion 24b is formed on the inner surface of the cylindrical portion 24a. As described above, the first female screw portion 24b is provided on the diaphragm space S1 side. Then, the first screw Sc1 is screwed into the burring screw 24 through the through hole 11 formed in the circuit board 10 from above the circuit board 10, and the circuit board 10 is fastened.

図５に示すように、締結用板材としての取付プレート２５が各回路基板取付用台座２３に対応するように用意され、この取付プレート２５が図６に示すように、絞り空間Ｓ１の側面開口部を塞ぐように下ケース２０の側板２２に溶接によって固定されている。この取付プレート２５にはバーリングねじ２６が絞り空間Ｓ１に突出するように形成されている。つまり、取付プレート２５から絞り空間Ｓ１に向けて突出する筒部２６ａが絞り加工により形成され、この筒部２６ａの内面には第２の雌ねじ部２６ｂが形成されている。このように、絞り空間Ｓ１側に第２のねじＳｃ２が螺入する第２の雌ねじ部２６ｂを設けた取付プレート２５が絞り空間Ｓ１の側面開口部に位置する状態で固定されている。   As shown in FIG. 5, a mounting plate 25 as a fastening plate member is prepared so as to correspond to each circuit board mounting base 23. As shown in FIG. 6, this mounting plate 25 is a side opening of the aperture space S1. Is fixed to the side plate 22 of the lower case 20 by welding. A burring screw 26 is formed on the mounting plate 25 so as to protrude into the aperture space S1. That is, the cylindrical portion 26a protruding from the mounting plate 25 toward the drawing space S1 is formed by drawing, and the second female screw portion 26b is formed on the inner surface of the cylindrical portion 26a. As described above, the mounting plate 25 provided with the second female screw portion 26b into which the second screw Sc2 is screwed on the throttle space S1 side is fixed in a state of being positioned at the side opening of the throttle space S1.

図２の上ケース３０について、板金製の上ケース３０は、全体形状として下面が開口した箱型をなし、下ケース２０の開口部を塞ぐように下ケース２０の上に配置されている。詳しくは、長方形状の天井板３１の外周縁から側板３２が下方に延びている。側板３２は下ケース２０の側板２２の上端と接近する位置において外側に広がるように段差３２ａが形成され、下ケース２０の側板２２の外周側において下方に延びている（下ケース２０の側板２２の回りを囲っている）。   As for the upper case 30 in FIG. 2, the upper case 30 made of sheet metal has a box shape with the lower surface opened as an overall shape, and is disposed on the lower case 20 so as to close the opening of the lower case 20. Specifically, the side plate 32 extends downward from the outer peripheral edge of the rectangular ceiling plate 31. The side plate 32 is formed with a step 32a so as to spread outward at a position approaching the upper end of the side plate 22 of the lower case 20, and extends downward on the outer peripheral side of the side plate 22 of the lower case 20 (the side plate 22 of the lower case 20). Around).

図６に示すように、上ケース３０の側縁には取付プレート２５の第２の雌ねじ部２６ｂに螺入される第２のねじＳｃ２が通る貫通孔３３が形成されている（側縁における取付プレート２５のバーリングねじ２６に対応する位置に貫通孔３３が形成されている）。そして、第２のねじＳｃ２が上ケース３０の側面外方から上ケース３０の貫通孔３３を通してバーリングねじ２６に螺入されている。これにより、上ケース３０が下ケース２０に第２のねじＳｃ２にて締結されている。   As shown in FIG. 6, a through-hole 33 through which the second screw Sc <b> 2 screwed into the second female screw portion 26 b of the mounting plate 25 passes is formed on the side edge of the upper case 30 (attachment at the side edge). A through hole 33 is formed at a position corresponding to the burring screw 26 of the plate 25). The second screw Sc <b> 2 is screwed into the burring screw 26 from the outside of the side surface of the upper case 30 through the through hole 33 of the upper case 30. Thereby, the upper case 30 is fastened to the lower case 20 by the second screw Sc2.

なお、回路基板１０に搭載した電子部品は図示しないコネクタを介して外部機器とワイヤーにて電気的に接続されている。
次に、電子機器１の組み立て方法について説明する。 The electronic component mounted on the circuit board 10 is electrically connected to an external device via a wire via a connector (not shown).
Next, a method for assembling the electronic device 1 will be described.

まず、電子部品を搭載した回路基板１０、下ケース２０、および上ケース３０を用意する。そして、下ケース２０の回路基板取付用台座２３の上に回路基板１０を載置する。そして、第１のねじＳｃ１を回路基板１０の上方から回路基板１０の貫通孔１１を通してバーリングねじ２４に螺入して第１のねじＳｃ１により回路基板１０を下ケース２０に締結する。このねじ締結時において第１のねじＳｃ１が第１の雌ねじ部２４ｂに螺入される際に発生する切粉は、ケース外部である絞り空間Ｓ１に出てケース内部には入らない。   First, the circuit board 10, the lower case 20, and the upper case 30 on which electronic components are mounted are prepared. Then, the circuit board 10 is placed on the circuit board mounting base 23 of the lower case 20. Then, the first screw Sc1 is screwed into the burring screw 24 from above the circuit board 10 through the through hole 11 of the circuit board 10, and the circuit board 10 is fastened to the lower case 20 with the first screw Sc1. Chips generated when the first screw Sc1 is screwed into the first female screw portion 24b at the time of fastening the screw exit to the throttle space S1 outside the case and do not enter the case.

引き続き、下ケース２０の上から上ケース３０を、下ケース２０の開口部を塞ぐように被せる。そして、第２のねじＳｃ２を上ケース３０の側方から上ケース３０の貫通孔３３を通してバーリングねじ２６に螺入して第２のねじＳｃ２により上ケース３０を下ケース２０に締結する。このねじ締結時において第２のねじＳｃ２が取付プレート２５の第２の雌ねじ部２６ｂに螺入される際に発生する切粉は、ケース外部である絞り空間Ｓ１に出てケース内部には入らない。   Subsequently, the upper case 30 is placed over the lower case 20 so as to close the opening of the lower case 20. Then, the second screw Sc2 is screwed into the burring screw 26 from the side of the upper case 30 through the through hole 33 of the upper case 30, and the upper case 30 is fastened to the lower case 20 with the second screw Sc2. Chips generated when the second screw Sc2 is screwed into the second female screw portion 26b of the mounting plate 25 at the time of the screw tightening exit to the throttle space S1 outside the case and do not enter the case. .

上記実施形態によれば、以下のような効果を得ることができる。
（１）下ケース２０には絞り加工による回路基板取付用台座２３が形成され、この回路基板取付用台座２３に回路基板１０が絞り空間Ｓ１に第１のねじＳｃ１が突出するようにして締結され、また、下ケース２０に対し上ケース３０が絞り空間Ｓ１に第２のねじＳｃ２が突出するように締結されている。よって、ねじ締結時の切粉がケース内部に入ることを防止できる。また、下ケース２０と上ケース３０との締結部は板金同士となっており、熱膨張率の違う回路基板１０を挟んでいない。よって、回路基板１０を挟んで下ケース２０と上ケース３０とを締結した場合においては熱膨張係数の差によりねじの軸方向に熱応力が加わるので、軸方向の応力に強いねじを使用する必要がある。これに対し本実施形態においては、回路基板を挟んで締結しておらず（共締めがないため）、ねじの選定に自由度がある。 According to the above embodiment, the following effects can be obtained.
(1) A circuit board mounting base 23 is formed on the lower case 20 by drawing, and the circuit board 10 is fastened to the circuit board mounting base 23 so that the first screw Sc1 protrudes into the aperture space S1. Further, the upper case 30 is fastened to the lower case 20 so that the second screw Sc2 protrudes into the throttle space S1. Therefore, it can prevent that the chip at the time of screw fastening enters in a case. Moreover, the fastening part of the lower case 20 and the upper case 30 is sheet metal, and does not sandwich the circuit board 10 having a different coefficient of thermal expansion. Therefore, when the lower case 20 and the upper case 30 are fastened with the circuit board 10 interposed therebetween, thermal stress is applied in the axial direction of the screw due to the difference in thermal expansion coefficient, so it is necessary to use a screw that is resistant to axial stress. There is. In contrast, in the present embodiment, the circuit board is not fastened (because there is no joint fastening), and there is a degree of freedom in selecting the screw.

実施形態は前記に限定されるものではなく、例えば、次のように具体化してもよい。
・バーリングねじ付の取付プレート２５は下ケース２０に溶接にて固定したが、溶接以外にもカシメ等で行ってもよい。 The embodiment is not limited to the above, and may be embodied as follows, for example.
-Although the mounting plate 25 with a burring screw was fixed to the lower case 20 by welding, it may be carried out by caulking or the like other than welding.

・図６に示したように雌ねじ部（２４ｂ，２６ｂ）をバーリングねじ２４，２６にて形成したが、バーリングねじ２４，２６に代わり、図７に示すように、別付けのナット４０，４１、即ち、ウェルドナット（溶接ナット）や圧入ナットに変更してもよい。このようにすると、より強い締結力でねじ締結が可能であり、共振振動が激しい搭載位置、ねじに負担のかかりやすい環境等、より強い締結力が必要な時に有効である。   As shown in FIG. 6, the female thread portions (24b, 26b) are formed by the burring screws 24, 26, but instead of the burring screws 24, 26, as shown in FIG. That is, it may be changed to a weld nut (welding nut) or a press-fit nut. In this way, it is possible to fasten the screw with a stronger fastening force, which is effective when a stronger fastening force is required, such as a mounting position where the resonance vibration is severe, an environment where the screw is likely to be burdened, and the like.

・絞り加工による回路基板取付用台座２３は図２等では６箇所設けたが、これに限るものではない。具体的には、下ケース２０の四隅と長辺の中央の計６箇所に設けたが、四隅の４箇所のみ等の適宜の箇所に設ければよい。   The circuit board mounting base 23 by drawing is provided in six places in FIG. 2 and the like, but is not limited thereto. Specifically, the lower case 20 is provided at a total of six locations at the four corners and the center of the long side, but may be provided at appropriate locations such as only four locations at the four corners.

・絞り加工による回路基板取付用台座２３は下ケース２０に設けたが、上ケース３０に絞り加工による回路基板取付用台座２３を形成して上ケース３０に回路基板１０を締結する構成としてもよい。   Although the circuit board mounting base 23 by drawing is provided in the lower case 20, the circuit board mounting base 23 by drawing may be formed on the upper case 30 and the circuit board 10 may be fastened to the upper case 30. .

・車載機器であったが、車載用に限るものではなく電気機器一般に適用することができる。   -Although it was a vehicle-mounted device, it is not limited to a vehicle-mounted device, but can be applied to electric devices in general.

本実施の形態における電子機器の斜視図。FIG. 11 is a perspective view of an electronic device in this embodiment. 電子機器の分解斜視図。FIG. 電子機器の下面図（図１のＡ矢視図）。The bottom view of an electronic device (A arrow line view of FIG. 1). 電子機器の正面図（図１のＢ矢視図）。The front view of an electronic device (B arrow view of FIG. 1). 電子機器を構成する下ケースの分解斜視図。The disassembled perspective view of the lower case which comprises an electronic device. 図３のＡ−Ａ線での要部拡大断面図。The principal part expanded sectional view in the AA line of FIG. 別例における要部拡大断面図。The principal part expanded sectional view in another example.

符号の説明Explanation of symbols

１０…回路基板、２０…下ケース、２３…回路基板取付用台座、２４…バーリングねじ、２４ｂ…第１の雌ねじ部、２５…取付プレート、２６…バーリングねじ、２６ｂ…第２の雌ねじ部、３０…上ケース、４０，４１…ナット、Ｓｃ１…第１のねじ、Ｓｃ２…第２のねじ。   DESCRIPTION OF SYMBOLS 10 ... Circuit board, 20 ... Lower case, 23 ... Circuit board mounting base, 24 ... Burring screw, 24b ... First female screw part, 25 ... Mounting plate, 26 ... Burling screw, 26b ... Second female screw part, 30 ... Upper case, 40, 41 ... Nut, Sc1 ... First screw, Sc2 ... Second screw.

Claims (1)

電子部品を実装した回路基板と、
上面が開口する箱型をなし、内部に前記回路基板を収納するための下ケースと、
下面が開口する箱型をなし、前記下ケースの開口部を塞ぐように前記下ケースの上に配置され前記下ケースと共に内部に前記回路基板を収納するための上ケースと
を備えた電子機器において、
前記下ケースと前記上ケースの一方は、前記回路基板が第１のねじにて締結されるものであり、側縁にはケース内方に突出する絞り加工による回路基板取付用台座が形成され、当該回路基板取付用台座における前記絞り加工により得られた絞り空間側に前記第１のねじが螺入する第１の雌ねじ部が設けられ、かつ、前記絞り空間側に第２のねじが螺入する第２の雌ねじ部を設けた締結用板材が前記絞り空間の側面開口部に位置する状態で固定され、
前記下ケースと前記上ケースの他方は、前記下ケースと前記上ケースの一方が前記第２のねじにて締結されるものであり、側縁には前記締結用板材の第２の雌ねじ部に螺入される前記第２のねじが通る貫通孔が形成されている
ことを特徴とする電子機器。 A circuit board on which electronic components are mounted;
A box shape with an open top surface, a lower case for storing the circuit board inside,
In an electronic device comprising a box shape having an open bottom surface and disposed on the lower case so as to close the opening of the lower case, and an upper case for housing the circuit board together with the lower case ,
One of the lower case and the upper case is one in which the circuit board is fastened with a first screw, and a circuit board mounting base is formed on the side edge by drawing that protrudes inward of the case, A first female screw portion into which the first screw is screwed is provided on the drawing space side obtained by the drawing processing on the circuit board mounting base, and a second screw is screwed on the drawing space side. The fastening plate member provided with the second female screw portion is fixed in a state of being located at the side opening of the throttle space,
The other of the lower case and the upper case is such that one of the lower case and the upper case is fastened by the second screw, and the side edge is connected to the second female screw portion of the fastening plate member. An electronic device, wherein a through-hole through which the second screw to be screwed passes is formed.
JP2008073958A 2008-03-21 2008-03-21 Electronic apparatus Pending JP2009231472A (en)

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JP2014203956A (en) * 2013-04-04 2014-10-27 三菱電機株式会社 Screw fastening structure
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JP2015073364A (en) * 2013-10-02 2015-04-16 パナソニックＩｐマネジメント株式会社 Electric power supply, lighting instrument and vehicle
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Publication number Priority date Publication date Assignee Title
JP2014203956A (en) * 2013-04-04 2014-10-27 三菱電機株式会社 Screw fastening structure
WO2015022730A1 (en) * 2013-08-13 2015-02-19 三菱電機株式会社 Electronic apparatus
DE112013007338B4 (en) * 2013-08-13 2017-11-30 Mitsubishi Electric Corporation Arrangement of a housing and a cover for an electronic device
JP5837264B2 (en) * 2013-08-13 2015-12-24 三菱電機株式会社 Electronics
CN105453712A (en) * 2013-08-13 2016-03-30 三菱电机株式会社 Electronic apparatus
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US9756753B2 (en) 2013-10-02 2017-09-05 Panasonic Intellectual Property Management Co., Ltd. Power supply device, light fixture, and vehicle
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US9907200B2 (en) 2013-10-02 2018-02-27 Panasonic Intellectual Property Management Co., Ltd. Power supply device, light fixture, and vehicle
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JP2021005503A (en) * 2019-06-26 2021-01-14 パナソニックＩｐマネジメント株式会社 Effective component generation device and manufacturing method of the same
JP7213467B2 (en) 2019-06-26 2023-01-27 パナソニックＩｐマネジメント株式会社 Active ingredient generator

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