JP4081151B2 - Electronic equipment - Google Patents

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JP4081151B2
JP4081151B2 JP13819796A JP13819796A JP4081151B2 JP 4081151 B2 JP4081151 B2 JP 4081151B2 JP 13819796 A JP13819796 A JP 13819796A JP 13819796 A JP13819796 A JP 13819796A JP 4081151 B2 JP4081151 B2 JP 4081151B2
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female screw
screw
screw member
hole
mounting
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JPH09321454A (en
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大造 船矢
紀雄 尾崎
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Fujitsu Ltd
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Fujitsu Ltd
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【０００１】
【発明の属する技術分野】
本発明は、通信分野または情報処理分野などにおける電子装置に関する。
電子装置には外部から、調整、点検、保守、などのために種々の表示や操作すべき箇所が設けられるが、このような箇所については操作要員以外の者による不必要な操作などが行なわれることを防止するために、カバーなどを設けて直接目に触れないようにして保護される。
【０００２】
電子装置が、室内などの比較的に環境の良好な場所に設置される場所は、カバーなどを取り外すことで操作、点検などを容易に行なうことができるが、高所や屋外、あるいは街路に面する、など、設置環境の良好でない場所にあっては、カバーなどを取り外すことは、落下、紛失などの不測の事態を生じることを防止するために、安全索などを設ける以外に、取り付け用ねじについても落下しないような複雑、かつ面倒な対策を要することから、簡易にして確実な脱落防止策が必要である。
【０００３】
【従来の技術】
図２０に、以上のような保護対策の施された従来の電子装置の要部側断面図が示される。電子装置１は、内部に電子・通信回路などを収容保護する、筐体本体２と蓋３とからなる装置本体５が、図示省略の蝶番、ねじなどによって一体的に結合されている。なお、内部の電子・通信回路、配線材などの部材は図示煩雑となることから、あえて図示省略して示してある。
【０００４】
装置本体５の蓋３の正面側に凹所６を設け凹所６内に、この例では、スイッチ７を設け、表面にカバー８を取り付け用ねじ９によって取り付け、凹所６を覆い隠している。
【０００５】
筐体本体２と蓋３とは、それぞれ耐蝕性を有するアルミニウム合金鋳物、たとえばダイカスト法による精密な鋳造品に形成されたものである。カバー８も同様な金属製品であり、すべて、塗装など適宜な耐蝕性のある表面処理が施されている。
【０００６】
装置本体５には段部１１とこの段部１１の上方側面に開口する窪み１２とを設け、取り付け用ねじ９は、カバー８の下端側を貫通するとともに、窪み１２を貫通するねじ挿通孔１４に挿入され、さらに窪み１２から装置本体５に形成されたねじ孔１５にねじ込まれている。
【０００７】
取り付け用ねじ９は、頭部１６と先端おねじ部１７との間に、ねじの谷径よりもわずかに細径な首部１８が設けられており、おねじ部１７近傍の首部１８の、円周方向に形成された図示省略の溝に、Ｅ型止め輪（スナップリング）１９が側方から嵌められている。
【０００８】
図示状態は、取り付け用ねじ９がねじ孔１５にねじ込まれてカバー８が筐体本体５に締めつけられ、取り付けられている状態が示される。取り付け用ねじ９には平座金２１、ばね座金２２が嵌められており、十分な締めつけ状態が得られている。
【０００９】
カバー８の上端側は、装置本体５に設けられた段差２３面に沿わされ、接して位置決めされるように構成されている。
以上の構成で、取り付け用ねじ９を緩めることで、おねじ部１７がねじ孔１５から抜け出すことにより、頭部１６が装置本体５から離れて浮き上がりカバー８が取り付け用ねじ９を中心にして回動自在となる。すなわち、カバー８は図示手前側の下方に垂れ下がる状態となり、凹所６が開放状態となって、スイッチ７を操作することができる。
【００１０】
スイッチ７の所定操作完了後は、カバー８を図示状態に回動させて、取り付け用ねじ９を締めつけ固定させることで復元される。
以上のようにして取り付け用ねじ９を緩めると、取り付け用ねじ９の長さ方向に移動することのないＥ型止め輪１９が、窪み１２の前面側に移動して接することになり、取り付け用ねじ９は装置本体５から抜け出ることが阻止される。つまり、カバー８も装置本体５から外れることがない。
【００１１】
このように、Ｅ型止め輪１９は取り付け用ねじ９の締めつけ、緩めに応じて窪み１２内を進退するのみであり、比較的に簡易構成にしてカバー８の外れが防止される。しかしながら、カバー８を回動可能とすることから、取り付け用ねじ９の数は一箇所一本のみに限定されるものである。
【００１２】
【発明が解決しようとする課題】
以上のように、比較的に簡易構成ではあるものの、側面下方に窪み１２を形成させるために、ダイカスト鋳造用の金型が内外両面型以外に、窪み１２形成用の側方へ進退可能な、特殊な型部分を要する複雑なものとなるといった問題がある。
【００１３】
Ｅ型止め輪１９が窪み１２内に存在することから、これを外部から覗き見ることができ、このために、悪戯などによってＥ型止め輪１９を抜き取られるおそれがある。抜き取られたことに気付かずに保守要員が取り付け用ねじ９を緩めると、装置本体５から抜け出してカバー８とともに外れ落ちるといった事態の生じるおそれがある。
【００１４】
本発明は、上記従来の種々な問題点にかんがみて、抜け止め構造の製造性ならびに外観の良好な電子装置を提供することを発明の課題とするものである。
【００１５】
【課題を解決するための手段】
上記課題を達成するための本発明電子装置の構成手段は、取り付け用ねじが挿入される孔の開口側に設けられる第１のめねじ部材と上記孔の内部側に第１のめねじ部材とは所定間隔隔てて設けられる第２のめねじ部材とを有する装置本体と、頭部と先端のおねじ部との間に首部の設けられた取り付け用ねじが貫通孔に挿入され該取り付け用ねじによって上記装置本体に取り付けられる取り付け部材と、からなり、上記取り付け用ねじのおねじ部が装置本体の第１のめねじ部材にねじ込み通過されて該おねじ部が第１のめねじ部材と第２のめねじ部材との間を通過して第２のめねじ部材にねじ込まれることで上記取り付け部材が装置本体に取り付けられ、上記おねじ部が第１のめねじ部材と第２のめねじ部材との間に位置されることにより上記取り付け部材が取り付け用ねじを中心に回動自在にして該取り付け用ねじとともに抜け止めされることにある。
【００１６】
上記、第１のめねじ部材と第２のめねじ部材との間に、取り付け用ねじのおねじ部の長さよりも長い所定間隔を設けたことにより、この間隔部分におねじ部を位置させた状態において、取り付け用ねじのおねじ部を故意に第１のめねじ部材の部分を通過させて、抜き出すようなことをしない限り、取り付け用ねじが装置本体から抜け出ること、すなわち、取り付け部材は取り付け用ねじに支持されて外れ落ちること、がない。
【００１７】
装置本体に、この装置本体とは別体の第１のめねじ部材と第２のめねじ部材とを、所定間隔を介して設けるようにすることで、比較的に小径なねじに対して、取り付け用ねじのおねじ部を、その間隔内に自由状態に位置させることができるから、取り付け用ねじの連続した緩め操作を中断すべき位置を、間隔部分において、取り付け用ねじが空転することで的確に感知することができる。
【００１８】
すなわち、第１のめねじ部材は取り付け用ねじの抜け止めに、第２のめねじ部材は取り付け用ねじの締めつけに、それぞれが明確に機能を分担しているものである。
【００１９】
上記装置本体に設けられる第１のめねじ部材と第２のめねじ部材の少なくとも一方は装置本体の孔内面に形成された螺旋溝にねじ込まれるねじ込み型の螺旋状ねじ部材であるか、もしくは、装置本体の孔内に埋め込まれる埋め込み型めねじ部材のいずれかとする構成により、好適な構成ならびに効果が得られる。
【００２０】
すなわち、第１のめねじ部材と第２のめねじ部材とを、ともに、装置本体の孔内面に形成された螺旋溝にねじ込む螺旋状ねじ部材とすることにより、同一のねじ込み操作で行なうことができ、効率的である。
【００２１】
第１のめねじ部材と第２のめねじ部材とをともに、装置本体の孔内に埋め込ませる埋め込み型めねじ部材とすることにより、装置本体成型時に埋め込ませること、あるいは、成型後に埋め込ませること、が選択可能となる。また、第１のめねじ部材と第２のめねじ部材との間隔部分には螺旋溝が存在しない。
【００２２】
第１のめねじ部材と第２のめねじ部材とを、螺旋状めねじ部材と埋め込み型めねじ部材との組み合わせとすることにより、相互の間隔部分には螺旋溝を設ける要がなくなる。
【００２３】
【発明の実施の形態】
以下、本発明電子装置について、構成手段にもとづいた好適実施形態により図を参照し具体的詳細に説明する。なお、理解を容易とするために、全図を通じて同様箇所には同一符号を付して示すこととする。また、本発明においては貫通孔および不貫通穴に対して、すべて孔と称することとする。
【００２４】
図１は、本発明電子装置の第１の一実施形態の要部側断面図である。装置本体３１の取り付け用ねじが挿入される孔３２の開口３３側に設けられる第１のめねじ部材３４と、孔３２の内部３５側に第１のめねじ部材３４とは所定間隔（Ｌ1 ）３６を隔てて設けられる第２のめねじ部材３７と、を有する。
【００２５】
この孔３２は下孔３８に、称呼寸法の呼び径に対応する所定ピッチと同一ピッチを有し、大径なインサートコイルタップによりタップ加工を行ない、孔３２内面にめねじ形状の螺旋溝３９を形成する。
【００２６】
先端に直径方向に折り曲げられたフックを有し、折り曲げ部分にノッチが形成され、螺旋溝３９よりもわずかに大径なインサートコイル、または、ヘリカルコイルインサート（商品名、ヘリサート）と称されるステンレス鋼製の、第１のめねじ部材３４および第２のめねじ部材３７を、螺旋溝３９にねじ込む。
【００２７】
以上のようなことから、この第１，第２のめねじ部材３４，３７は、いずれもが、ねじ込み型の螺旋状ねじ部材であるが、説明の都合上簡略して、第１のめねじ部材３４、第２のめねじ部材３７、と略称することにする。
【００２８】
まず、上記第２のめねじ部材３７のフックを所定のねじ込み工具（いずれも図示せず）の先端に支持させて、ねじ込み工具をねじ込み方向に回転させながら、第２のめねじ部材３７を螺旋溝３９に沿わせて挿入させる。
【００２９】
第２のめねじ部材３７は螺旋溝３９の内面に圧接状態に弾性縮小変形されて密着し、順次挿入される。孔３２の内部３５側の所定位置に達した状態で、ねじ込み工具を逆方向に回転させるようにして押し込むなどでフックがノッチ部分で破断除去されるから、ねじ込み工具とともに取り出す。ねじ込み工具の逆方向への回転動作は、第２のめねじ部材３７が螺旋溝３９に食い込むように作用し、同方向には回転し得ず形状が安定する。
【００３０】
第２のめねじ部材３７と同様の第１のめねじ部材３４を、続けて同様にして挿入させる。このようにして、両めねじ部材３４，３７を挿入した状態が図示状態である。なお、第１のめねじ部材３４の長さが第２のめねじ部材３７の長さよりも短い。このことは後述する理由によるが、同一長とすることも適宜任意に行なえることである。
【００３１】
図示される状態は、両めねじ部材３４，３７の内周面で形成されるめねじの形状が、たとえば、標準ねじの呼び径とともにピッチに一致するものとなっている。
【００３２】
図示される螺旋溝３９は、理解を容易とするために全長にわたって描かれているが、逆に図示煩雑なことから、第１，第２のめねじ部材３４，３７部分以外をシンボルによって略画した状態を図２に示し、同一符号を付してある。以下両図を参照しながら説明する。
【００３３】
取り付け部材４１の貫通孔には、取り付け用ねじ４２の頭部４３と先端のおねじ部４４との間に、おねじ部４４の谷径に等しいか、それよりも小径な首部４５の部分が形成されている。この取り付け用ねじ４２の頭部４３側には平座金４６とばね座金４７とが挿入されている。この実施形態例では、取り付け用ねじ４２の頭部４３は十字孔付きの鍋頭である。
【００３４】
なお、おねじ部４４の長さはＬ2 に設定されている。この長さＬ2 は、装置本体３１側の第１，第２のめねじ部材３４，３７の間隔３６の距離Ｌ1 よりも短い。すなわち、Ｌ1 ＞Ｌ2 である。
【００３５】
取り付け部材４１の貫通孔の大きさは、簡易には、おねじ部４４を挿通させるに自在な大きさか、おねじ部４４をねじ込み通過させ得る、めねじが形成されていてもよいことである。
【００３６】
以上の構成で、第１の一実施形態の作用について以下説明する。図３を参照すると、取り付け用ねじ４２のおねじ部４４を、装置本体３１の第１のめねじ部材３４にねじ込み内部に通過させた状態が示されている。
【００３７】
この状態は、図からも明らかなように、おねじ部４４が第１のめねじ部材３４と第２のめねじ部材３７との中間である間隔３６部分に位置している。螺旋溝３９の内径（山径）はおねじ部４４の外径よりも大きいために、取り付け用ねじ４２は、この間３６部分を長さ方向の余裕（Ｌ1 −Ｌ2 ）分、軸方向に移動自在であり、空転自在でもある。間Ｌ1 ３６が所定間隔であるとは、このような関係をいう。
【００３８】
また、取り付け用ねじ４２の首部４５は、第１のめねじ部材３４の内径に嵌まり合っていることから、この内径に支えられて大きく傾くことがない。すなわち、取り付け部材４１は首部４５を中心にして、その周囲を回動自在である。
【００３９】
取り付け用ねじ４２は緩める方向に回転させることなく、引き抜く方向に引き出そうとしても、第１のめねじ部材３４に阻止されて引き抜くことはできず、取り付け部材４１とともに、装置本体３１側から外れることが防止される。
【００４０】
つぎに、図４を参照すると、取り付け用ねじ４２のおねじ部４４が、第２のめねじ部材３７の部分にねじ込み締めつけられた状態が示される。この状態は、取り付け部材４１が装置本体３１側の面に、取り付け用ねじ４２の締めつけにより、押しつけられ固定されていることにほかならない。
【００４１】
第１のめねじ部材３４の長さが、第２のめねじ部材３７の長さよりも短くてもよい理由は、第２のめねじ部材３７は取り付け用ねじ４２のおねじ部４４の長さに適合して、その締めつけ力に十分に耐えられる強度が必要であるのに対し、第１のめねじ部材３４は取り付け用ねじ４２の引き抜き力に耐えればよいことから、最低限度の長さ以上あればよいからである。
【００４２】
しかしながら、第１のめねじ部材３４を短くすることは、それだけ、取り付け用ねじ４２の全長を短くし得ることになり、孔３２の深さを短くし得ることが可能となる。
【００４３】
以上のようであって、本発明構成による取り付け用ねじ４２と、装置本体３１側の、第１，第２のめねじ部材３４，３７との協働作用で、取り付け部材４１を締めつける図４に示される固定状態と、取り付け用ねじ４２の回りに回動可能な図３に示される緩め状態と、の作用が得られ、しかも、緩め状態において、取り付け用ねじ４２とともに取り付け部材４１が装置本体３１側から外れることが防止される。
【００４４】
本発明における、装置本体３１、取り付け部材４１、などは、好ましくは、アルミニウム合金材の精密鋳造品、たとえば、ダイカスト鋳造品、シエルモールド鋳造品。または、合成樹脂成型品。などの、直接めねじを形成させても、その機械的強度が保証されない製品に適用して好適なことである。
【００４５】
本発明電子装置の第２の一実施形態について図５を参照して説明すると、図５には装置本体３１側のみが示され、取り付け部材および取り付け用ねじについては図１ないし図４の該当部分が、そのまま適用され得る。
【００４６】
装置本体３１の取り付け用ねじが挿入される孔３２の開口３３側に設けられる第１のめねじ部材３４と、孔３２の内部３５側に第１のめねじ部材３４とは所定間隔（Ｌ1 ）３６を隔てて設けられる第２のめねじ部材３７と、を有する。
【００４７】
この孔３２は下孔３８に、称呼寸法の呼び径に対応する所定ピッチと同一ピッチを有し、大径なインサートコイルタップによりタップ加工を行ない、孔３２内面にめねじ形状の螺旋溝３９を形成する。本実施形態によると、下孔３８が貫通孔であるから、タップ加工の際の切削屑が貫通孔端部から排出されるといった効果がある。もちろん、タップ加工は図示状態のように内部３５側で止めることなく状況に応じて貫通させることも可能なことである。
【００４８】
先端に直径方向に折り曲げられたフックを有し、折り曲げ部分にノッチが形成され、螺旋溝３９よりもわずかに大径なインサートコイル、または、ヘリカルコイルインサート（商品名、ヘリサート）と称されるステンレス鋼製の、第１のめねじ部材３４および第２のめねじ部材３７を、螺旋溝３９にねじ込む。
【００４９】
以上のようなことから、この第１，第２のめねじ部材３４，３７は、いずれもが、ねじ込み型の螺旋状ねじ部材であるが、説明の都合上簡略して、第１のめねじ部材３４、第２のめねじ部材３７、と称することにする。
【００５０】
まず、上記第２のめねじ部材３７のフックを所定のねじ込み工具（いずれも図示せず）の先端に支持させて、ねじ込み工具をねじ込み方向に回転させながら、第２のめねじ部材３７を螺旋溝３９に沿わせて挿入させる。
【００５１】
第２のめねじ部材３７は螺旋溝３９の内面に圧接状態に弾性縮小変形されて密着し、順次挿入される。孔３２の内部３５側の所定位置に達した状態で、ねじ込み工具を逆方向に回転させるようにして押し込むなどでフックがノッチ部分で破断除去されるから、ねじ込み工具とともに取り出す。ねじ込み工具の逆方向への回転動作は、第２のめねじ部材３７が螺旋溝３９に食い込むように作用し、同方向には回転し得ず形状が安定する。
【００５２】
第２のめねじ部材３７と同様の第１のめねじ部材３４を、続けて同様にして挿入させる。このようにして、両めねじ部材３４，３７を挿入した状態が図示状態である。なお、第１のめねじ部材３４の長さが第２のめねじ部材３７の長さよりも短いことは前実施形態と同様であるが、同一長とすることも同様である。
【００５３】
図示される状態は、両めねじ部材３４，３７の内周面で形成されるめねじの形状が、たとえば、標準ねじの呼び径とともにピッチに一致するものとなっている。
【００５４】
以上の構成による取り付け部材、および取り付け用ねじとの作用、効果に関しては、前実施形態における図３、図４と同様であるから既述の説明とも、あわせて参照されたい。
【００５５】
本発明電子装置の第３の一実施形態について図６を参照して説明すると、図６は装置本体３１側のみが示され、取り付け部材および取り付け用ねじについては、前実施形態と同様に図１ないし図４の該当部分が、そのまま適用され得る。
【００５６】
装置本体３１の取り付け用ねじが挿入される孔３２の開口３３側に設けられる第１のめねじ部材３４と、孔３２の内部３５側に第１のめねじ部材３４とは所定間隔（Ｌ1 ）３６を隔てて設けられる第２のめねじ部材３７と、を有する。
【００５７】
この孔３２は下孔３８に、称呼寸法の呼び径に対応する所定ピッチと同一ピッチを有し、大径なインサートコイルタップによりタップ加工を行ない、孔３２内面にめねじ形状の螺旋溝３９を形成する。本実施形態によると、下孔３８が貫通孔であるとともに、両面からタップ加工し得る条件をそなえていることから、タップ加工は図示されるように両面から、それぞれ所定長、すなわち間隔３６を与えるように行なえ、タップ加工時間を少なくできる。内部３５側のタップ加工を要しない部分４９には、大径な逃げを施しておくことで、タップ加工長をより少なくできる。
【００５８】
先端に直径方向に折り曲げられたフックを有し、折り曲げ部分にノッチが形成され、螺旋溝３９よりもわずかに大径なインサートコイル、または、ヘリカルコイルインサート（商品名、ヘリサート）と称されるステンレス鋼製の、第１のめねじ部材３４および第２のめねじ部材３７を、両側の螺旋溝３９にそれぞれねじ込む。
【００５９】
以上のようなことから、この第１，第２のめねじ部材３４，３７は、いずれもが、ねじ込み型の螺旋状ねじ部材であるが、説明の都合上簡略して、第１のめねじ部材３４、第２のめねじ部材３７、と称することにする。
【００６０】
まず、上記第２のめねじ部材３７のフックを所定のねじ込み工具（いずれも図示せず）の先端に支持させて、ねじ込み工具をねじ込み方向に回転させながら、第２のめねじ部材３７を内部３５側の端面から螺旋溝３９に沿わせて挿入させる。
【００６１】
第２のめねじ部材３７は螺旋溝３９の内面に圧接状態に弾性縮小変形されて密着し、順次挿入される。孔３２の内部３５側の所定位置に達した状態で、ねじ込み工具を逆方向に回転させるようにして押し込むなどでフックがノッチ部分で破断除去されるから、ねじ込み工具とともに取り出す。ねじ込み工具の逆方向への回転動作は、第２のめねじ部材３７が螺旋溝３９に食い込むように作用し、同方向には回転し得ず形状が安定する。
【００６２】
第２のめねじ部材３７と同様の第１のめねじ部材３４を、孔３２の開口３３側から同様にして挿入させる。このようにして、両めねじ部材３４，３７を挿入した状態が図示状態である。第２のめねじ部材３７と、第１のめねじ部材３４と、の挿入順序はいずれが前後しても差し支えないことである。なお、第１のめねじ部材３４の長さが第２のめねじ部材３７の長さよりも短いことは前実施形態と同様であるが、同一長とすることも同様である。
【００６３】
図示される状態は、両めねじ部材３４，３７の内周面で形成されるめねじの形状が、たとえば、標準ねじの呼び径とともにピッチに一致するものとなっている。
【００６４】
以上の構成による取り付け部材、および取り付け用ねじとの作用、効果、その他、に関しては、前実施形態における図３、図４と同様であるから既述の説明とも、あわせて参照されたい。
【００６５】
図７は本発明に適用される、めねじ部材の外観図が示され、図（ａ）は正面図、図（ｂ）は側面図、である。このめねじ部材５１は、内面にめねじ５２が形成され、外面には２条の互いに異なる方向に波形の彎曲形状のローレット目５３が形成されており、ローレット目５３は正面視山形をなし、ステンレス鋼あるいは黄銅などからなる。
【００６６】
上記めねじ部材５１を適用した本発明電子装置の第４の一実施形態について図８を参照して説明すると、図８は装置本体３１側のみが示され、取り付け部材および取り付け用ねじについては、前実施形態と同様に図１ないし図４の該当部分が、そのまま適用され得る。
【００６７】
装置本体３１の取り付け用ねじが埋め込まれる孔３２の開口３３側に設けられる第１のめねじ部材５１−１と、孔３２内部３５側に第２のめねじ部材５１−２とは所定間隔（Ｌ1 ）３６を隔てて設けられる第２のめねじ部材５１−２と、が配置される。
【００６８】
本実施形態にあっては、めねじ部材５１を圧入する態様について説明することとする。したがって、孔３２にはめねじ部材５１を圧入するための下孔５５を形成し、この下孔５５の内径はローレット目５３の外径よりも選択的に小径に設定される。
【００６９】
まず、第２のめねじ部材５１−２を下孔５５内に、適宜なプレス装置で内部３５側に押し込み圧入させると、下孔５５の内面にローレット目５３が食い込みながら押し込まれ挿入されるから、所定位置において停止させるとローレット目５３が食い込んだ状態に位置固定される。。
【００７０】
ついで、第１のめねじ部材５１−１を同様にして下孔５５内の開口３３側所定位置に挿入させることにより、図９に示されるようになる。すなわち、両めねじ部材５１−１，２の所定位置とは、図示されるように間隔３６がＬ1 となる位置関係にそれぞれ位置固定される。
【００７１】
以上の構成で、第４の一実施形態の作用について以下説明する。まず、図３を参照し、第１のめねじ部材の符号３４を５１−１、第２のめねじ部材３７の符号３７を５１−２、螺旋溝３９は下孔５５、にそれぞれ置き換えて説明することとする。取り付け用ねじ４２のおねじ部４４を、装置本体３１の第１のめねじ部材５５−１にねじ込み内部に通過させた状態とする。
【００７２】
おねじ部４４が第１のめねじ部材５５−１と第２のめねじ部材５５−２との中間である間隔３６部分に位置する。下孔５５の内径はおねじ部４４の外径よりも大きいために、取り付け用ねじ４２は、この間３６部分を長さ方向の余裕（Ｌ1 −Ｌ2 ）分、軸方向に移動自在であり、空転自在でもある。間Ｌ1 ３６はこのような関係の所定間隔に設定される。
【００７３】
また、取り付け用ねじ４２の首部４５は、第１のめねじ部材５１−１の内径に嵌まり合っていることから、この内径に支えられて大きく傾くことがない。すなわち、取り付け部材４１は首部４５を中心にして、その周囲を回動自在である。
【００７４】
取り付け用ねじ４２は緩める方向に回転させることなく、引き抜く方向に引き出そうとしても、第１のめねじ部材５１−１に阻止されて引き抜くことはできず、取り付け部材４１とともに、装置本体３１から外れることが防止される。
【００７５】
つぎに、図４を参照し同様に符号を入れ換えて説明すると、取り付け用ねじ４２のおねじ部４４が、第２のめねじ部材５１−２の部分にねじ込み締めつけられた状態とすることで、取り付け部材４１が装置本体３１側の面に、取り付け用ねじ４２の締めつけにより、押しつけられ固定される。
【００７６】
第１のめねじ部材５１−１の長さを、第２のめねじ部材５１−２の長さよりも短くしてもよいことは、第２のめねじ部材５１−２は取り付け用ねじ４２のおねじ部４４の長さに適合して、その締めつけ力に十分に耐える強度が必要であるのに対し、第１のめねじ部材５１−１は取り付け用ねじ４２の引き抜き力に耐えればよいことから、最低限度の長さ以上あればよく、要すれば同一長として共通化を図ることも可能なことである。
【００７７】
しかしながら、第１のめねじ部材５１−１を短くすることは、それだけ、取り付け用ねじ４２の全長を短くし得ることになり、孔３２の深さを短くし得ることが可能となる。
【００７８】
以上のようであって、本発明構成による取り付け用ねじ４２と、装置本体３１側の、第１，第２のめねじ部材５１−１，２との協働作用で、取り付け部材４１を締めつける図４に示される固定状態と、取り付け用ねじ４２の回りに回動可能な図３に示される緩め状態と、の作用が得られ、しかも、緩め状態において、取り付け用ねじ４２とともに取り付け部材４１が装置本体３１から外れることを防止される。
【００７９】
本発明における、装置本体３１、取り付け部材４１、などは、好ましくは、アルミニウム合金材の精密鋳造品、たとえば、ダイカスト鋳造品、シエルモールド鋳造品。または、合成樹脂成型品。などの直接めねじを形成させても、その機械的強度が保証されない製品に適用して好適なことである。
【００８０】
上記、本発明実施形態は、めねじ部材５１を説明の便宜上、後加工により装置本体３１へ圧入して埋め込むとして説明したが、このようなことに限定されるものではなく、装置本体３１の成型時に同時に埋め込んでしまうことにも、勿論適用可能なことであるが、この場合には下孔を必要とするものではなく、より強固に位置固定されることは、あえて説明するまでもなく、容易に理解されよう。
【００８１】
しかしながら、同時に埋め込むとしても、第２のめねじ部材５１−２のみをそのように行ない、第１のめねじ部材５１−１を成型後圧入するようにすれば、成型用の型を簡易なものにすることができる。
【００８２】
上記、めねじ部材５１を適用した本発明電子装置の第５の一実施形態について図１０を参照して説明すると、図１０は装置本体３１側のみが示され、取り付け部材および取り付け用ねじについては、前実施形態と同様に図１ないし図４の該当部分が、そのまま適用され得る。
【００８３】
装置本体３１の取り付け用ねじが埋め込まれる孔３２の開口３３側に設けられる第１のめねじ部材５１−１と、貫通孔３２の内部３５側に第１のめねじ部材５１−２とは所定間隔（Ｌ1 ）３６を隔てて設けられる第２のめねじ部材５１−２と、が配置挿入される。
【００８４】
本実施形態にあっては、めねじ部材５１を圧入する態様について説明することとする。したがって、孔３２めねじ部材５１を圧入するための下孔５５を両面から、それぞれ所定深さに形成する。この下孔５５の内径はローレット目５３の外径よりも選択的に小径に設定される。
【００８５】
両面から下孔５５の形成された中間部分は、所定間隔３６であり、この部分はめねじ部材５１のめねじ５２よりも僅か適当に大きな内径の間隔孔５７であり、その両端部分には下孔５５に対して段差面５８が形成される。
【００８６】
まず、第２のめねじ部材５１−２を内部３５側の下孔５５内に、適宜なプレス装置で押し込み圧入させると、下孔５５の内面にローレット目５３が食い込みながら押し込まれて挿入されるから、段差面５８に接することで位置決め停止され、ローレット目５３が食い込んだ状態に位置固定される。
【００８７】
ついで、第１のめねじ部材５１−１を同様にして開口３３側の下孔５５内に、同様にして挿入させることにより段差面５８に接することで、図示されるようになり位置固定される。すなわち、自動的に間隔３６（Ｌ1 ）が設定される。
【００８８】
第１，第２のめねじ部材５１−１，２の挿入順序は上記に限らず、任意に行なうことができる。
本実施形態によれば、めねじ部材５１の挿入位置が段差面５８によって設定される以外に、第２のめねじ部材５１−２が取り付け用ねじ４２の締めつけに対して、締めつけ力が段差面５８に受容支持されるから、同時に埋め込む場合のものに匹敵する強度が得られる。
【００８９】
図１１は、本発明電子装置の第６の一実施形態であり、装置本体３１側のみが示される。取り付け部材および取り付け用ねじについては、前実施形態と同様に図１ないし図４の該当部分が、そのまま適用され得る。
【００９０】
図（ａ）を参照すると、装置本体３１の取り付け用ねじが挿入される孔３２の開口３３側に設けられる図示されない第１のめねじ部材５１と、孔３２の内部３５側に第１のめねじ部材５１とは所定間隔（Ｌ1 ）３６を隔てて設けられる第２のめねじ部材３７と、を有するように構成される。
【００９１】
この孔３２は内部３５側に下孔３８を設け、この下孔３８部分に、称呼寸法の呼び径に対応する所定ピッチと同一ピッチを有し、大径なインサートコイルタップによりタップ加工を行ない、孔３２内面にめねじ形状の螺旋溝３９を形成する。螺旋溝３９の形成される部分と、開口３３側の第１のめねじ部分５１の挿入される中間部分は、螺旋溝３９の溝径相当の間隔孔５９である。
【００９２】
先端に直径方向に折り曲げられたフックを有し、折り曲げ部分にノッチが形成され、螺旋溝３９よりもわずかに大径なインサートコイル、または、ヘリカルコイルインサート（商品名、ヘリサート）と称されるステンレス鋼製の、第２のめねじ部材３７を、螺旋溝３９にねじ込む。このような第２のめねじ部材３７は、ねじ込み型の螺旋状ねじ部材であるが、説明の都合上、単に第２のめねじ部材３７と略称することにする。
【００９３】
上記、第２のめねじ部材３７のフックを所定のねじ込み工具（いずれも図示せず）の先端に支持させて、ねじ込み工具をねじ込み方向に回転させながら、第２のめねじ部材３７を螺旋溝３９に沿わせて挿入させる。
【００９４】
第２のめねじ部材３７は螺旋溝３９の内面に圧接状態に弾性縮小変形されて密着し、順次挿入される。孔３２の内部３５側の所定位置に達した状態で、ねじ込み工具を逆方向に回転させるようにして押し込むなどでフックがノッチ部分で破断除去されるから、ねじ込み工具とともに取り出す。ねじ込み工具の逆方向への回転動作は、第２のめねじ部材３７が螺旋溝３９に食い込むように作用し、同方向には回転し得ず形状が安定する。
【００９５】
孔３２の開口３３側には、図７に示される（埋め込み型）めねじ部材、すなわち、本実施形態にあっては第１のめねじ部材５１とし、孔３２の開口３３側には所定深さの、第１のめねじ部材５１を圧入するための下孔５５が形成される。この下孔５５の内径はローレット目５３の外径よりも選択的に小径に設定される。これにより、間隔孔５９との境界には段差面５８が形成される。
【００９６】
第１のめねじ部材５１を下孔５５内に、適宜なプレス装置で押し込み圧入させると、下孔５５の内面にローレット目５３が食い込みながら押し込まれて挿入され、段差面５８に接して位置決めされる。
【００９７】
この状態は、図（ｂ）に示されるようであり、ローレット目５３が食い込んだ状態に位置固定される。すなわち、両めねじ部材３７，５１の位置は、図示されるように間隔３６がＬ1 となる関係に位置固定される。
【００９８】
以上の構成による取り付け部材、および取り付け用ねじとの作用、効果に関しては、前実施形態における図３、図４と同様であるから既述の説明とも、あわせて参照されたい．また、タップ加工は図示状態のような内部３５側で止めることなく状況に応じて貫通させることも可能なことである。しかしながら、本実施形態によると、第２のめねじ部材３７のねじ込み長さを、内部３５側のみとして短くし得るから、ねじ込みの作業時間を短縮し得る。
【００９９】
図１２に本発明電子装置の第７の一実施形態の要部側断面図が示される。電子装置６１は、内部に電子・通信回路などを収容保護する、筐体本体６２と蓋６３とからなる装置本体６５は図示省略の蝶番、ねじなどによって一体的に結合されている。なお、内部の電子・通信回路、配線材などの部材は図示煩雑となることから、あえて図示省略して示してある。
【０１００】
装置本体６５の蓋６３の正面側に凹所６６設け、この例では、スイッチ６７を設け、表面にカバーである取り付け部材６８を取り付け用ねじ４２によって取り付け、凹所６６を覆い隠している。
【０１０１】
筐体本体６２と蓋６３とは、それぞれ耐蝕性を有するアルミニウム合金鋳物、たとえば、ダイカスト法による精密な鋳造品に形成されたものである。取り付け部材６８も同様な金属製品であり、すべて、塗装などの適宜な耐蝕性のある表面処理が施されている。
【０１０２】
装置本体６５の取り付け用ねじ４２が挿入される孔３２の開口３３側に設けられる第１のめねじ部材３４と、孔３２の内部３５側に第１のめねじ部材３４とは所定間隔（Ｌ1 ）３６隔てて設けられる第２のめねじ部材３７、とを有する。
【０１０３】
この孔３２は下孔３８に、称呼寸法の呼び径に対応する所定ピッチと同一ピッチを有し、大径なインサートコイルタップによりタップ加工を行ない、孔３２内面にめねじ形状の螺旋溝３９を形成する。
【０１０４】
先端に直径方向に折り曲げられたフックを有し、折り曲げ部分にノッチが形成され、螺旋溝３９よりもわずかに大径なインサートコイル、または、ヘリカルコイルインサート（商品名、ヘリサート）と称されるステンレス鋼製の、ねじ込み型の螺旋状ねじ部材であるところの、第１のめねじ部材３４および第２のめねじ部材３７を、螺旋溝３９にねじ込む。
【０１０５】
取り付け用部材６８の貫通孔には、取り付け用ねじ４２の頭部４３と先端のおねじ部４４との間に、おねじ部４４の谷径に等しいか、それよりも小径な首部４５の部分が挿入されている。この取り付け用ねじ４２の頭部４３側には平座金４６とばね座金４７とが挿入されている。
【０１０６】
なお、おねじ部４４の長さはＬ2 に設定されており、装置本体６５側の第１，第２のめねじ部材３４，３７の間隔３６の間Ｌ1 よりも短い、Ｌ1 ＞Ｌ2 である。
【０１０７】
以上のことは、図１ないし図４の、本発明第１の一実施形態と同様であるから既述の説明を図とともに参照されたい。なお、装置本体３１の符号は６５、取り付け部材４１の符号は６８、に置き換えて理解されたい。
【０１０８】
図１２の状態は、図４に示される状態であり、取り付け用ねじ４２が締めつけられた状態で、取り付け部材６８が装置本体６５に圧接状態である。取り付け部材６８の周囲は装置本体６５の表面、凹所６６周囲の段差面６９の周囲に嵌まり合って、位置決めされていることが図１３によく示されている。
【０１０９】
また、図１３に示されるように、取り付け部材６８に対して、取り付け用ねじ４２は、その下方中央部分の一箇所のみに設けられている。
以上の構成で、図１２に示される状態から取り付け用ねじ４２を緩め、図３に示されるようにおねじ部４４を間隔３６部分に位置させることで、取り付け部材６８は段差面６９から浮き上がらせて、取り付け用ねじ４２の首部４５を中心に回動可能となり、図１３の矢印方向、二点鎖線に示される位置６８′に移動させて、凹所６６を開放し操作部であるスイッチ６７を操作することができる。
【０１１０】
所定の操作終了後は取り付け部材６８を段差面６９の位置に回動させ、取り付け用ねじ４２を締めつけることで復元される。
装置本体６５側に段差面６９が設けられない場合について図１４を参照して説明すると、図（ａ）の正面図では適宜な二箇所の位置に、図（ｂ）の断面図に示されるような、装置本体６５側に位置決めピン７１を埋め込み、対応する取り付け部材６８側に不貫通孔７２を設けるか、または、図（ｃ）に示されように、貫通孔７３を設けておく、このような位置決め手段はできるかぎり対称にして離間した位置とすることが好ましい。
図（ｃ）のような貫通孔７３とすると、位置決め手段が外面から見えるが、図（ｂ）のようように不貫通孔７２にすると、外面から見えず体裁のよいものとなる。この作用、効果においては図１２のものと大差ない。
【０１１１】
図１２の孔３２の部分は、代表的に図１〜図４のものを適用したが、図５〜図１１に示される本発明第２〜第６の実施形態のものを適用し得ることは、あらためて、図示ならびに詳細な説明を行なわないが、組み合わせるなどして実施可能なことは、もちろんのことである。
【０１１２】
図１５に本発明の第８の一実施形態における取り付け部材７５の、正面図（ａ）と、そのＡ−Ａ断面図（ｂ）と、に示される。取り付け部材７５の四隅の表面側３箇所に円柱状の突起（ボス）７６、および１箇所に貫通孔７７、が設けられている。
【０１１３】
突起７６の裏面側には、ここに挿入されるところの、後述するねじ径よりもわずかに大きく、かつ、おねじ部を収容し得る深さの凹部７８と、表面側にはめねじを有するねじ孔７９と、が形成されている。取り付け部材７５の裏面側は平坦な平面である。
【０１１４】
この取り付け部材７５は、装置本体と同様なアルミニウム合金製であり、同様に精密鋳造法により作成される。
図１６の、図（ａ）には取り付け部材７５に適用される取り付け用ねじ、および締めつけ用ねじ、とが示される。取り付け用ねじ８１は、頭部４３と先端のおねじ部４４との間に、おねじ部４４の谷径に等しいか、それよりも小径な首部４５、および頭部４３の直下におねじ部４４の径に等しい柱状部８２、部分が形成されている。おねじ部４４の長さはＬ2 に設定されている。取り付け用ねじ８１の下方には平座金４６と、ばね座金４７と、が配置される。
【０１１５】
締めつけ用ねじ８５は、頭部４２と先端のおねじ部４４との間に、おねじ部４４の谷径に等しいか、それよりも小径な首部８６、および頭部４３の直下におねじ部４４の径に等しい柱状部８２、部分が形成されている。この首部８６の長さは図から明らかなように、取り付け用ねじ８１の首部４５の長さよりも短く設定されている。締めつけ用ねじ８５の下方には平座金４６と、ばね座金４７と、が配置される。
【０１１６】
取り付け用ねじ８１と締めつけ用ねじ８５とは、図（ｂ）に示されるように、取り付け部材７５に取り付けられる。すなわち、それぞれ表面側から、取り付け用ねじ８１は取り付け部材７５の貫通孔７７に挿入され、締めつけ用ねじ８５は、おねじ部４４をねじ孔７９にねじ込み通過される。
【０１１７】
図（ｂ）の状態では、取り付け用ねじ８１は貫通孔７７に対して、抜き差し自在であり、締めつけ用ねじ８５のおねじ部４４は、凹部７８に収容されるようであり、ねじ孔７９に阻止され、そのままでは抜け出ることが防止される。
【０１１８】
すなわち、取り付け部材７５に対して、取り付け用ねじ８１は１箇所に挿入され、締めつけ用ねじ８５は３箇所の突起７６部分に、それぞれ、ねじ込まれ取り付けられる。
【０１１９】
図１７に本発明の第８の一実施形態における装置本体９１の、要部正面図（ａ）と、そのＢ−Ｂ断面図（ｂ）と、に示される。この実施形態における装置本体９１は、基本的には図１２に示される本発明第７の実施形態に準じているものである。
【０１２０】
すなわち、装置本体９１の正面側に凹所６６を設け、この例では、内部にスイッチ６７を設け、凹所６６の周囲表面に平坦な段差面９３と、段差面９３の四隅に、左下１箇所に孔３２、その他の３箇所にねじ孔９５、とを設ける。また、孔３２とねじ孔９５を避けるようにして内側に、凹所６６の周囲に沿わせて段差面９３に凹溝９６と、凹溝９６内に合成樹脂ゴム製のＯリングガスケット９７を挿入配置させる。
【０１２１】
ねじ孔９５の形成方法は、まず不貫通下孔１０１に、称呼寸法の呼び径に対応する所定ピッチと同一ピッチを有し、大径なインサートコイルタップによりタップ加工を行ない、内面にめねじ形状の螺旋溝１０２を形成する。
【０１２２】
ついで、先端に直径方向に折り曲げられたフックを有し、折り曲げ部分にノッチが形成され、螺旋溝１０２よりもわずかに大径なインサートコイル、または、ヘリカルコイルインサート（商品名、ヘリサート）と称されるステンレス鋼製の、ねじ込み型螺旋状ねじ部材であるところの、めねじ部材１０３を螺旋溝１０２にねじ込むことにより形成される。
【０１２３】
取り付け用ねじ８１のねじ込まれる孔３２は、図１２の該当部分の構成と同じであり、開口３３側に第１のめねじ部材３４、ならびに内部３５側に第２のめねじ部材３７、およびそれらの間に所定間隔（Ｌ1 ）３６、が設けられている。
【０１２４】
図１８に本発明電子装置の第８の一実施形態の要部が、図１７の図（ａ）によるＣ−Ｃ断面図に示される。図は取り付け部材７５が装置本体９１に取り付けられ、押圧状態に固定されている状態である。
【０１２５】
取り付け部材７５は、図１６の図（ｂ）に示される状態で、取り付け用ねじ８１が装置本体９１の孔３２にねじ込まれ、締めつけられた状態であって、図４または図１２に示される状態、そのものである。
【０１２６】
また、締めつけ用ねじ８５は装置本体９１のねじ孔９５にねじ込まれ、締めつけられた状態である。したがって、Ｏリングガスケット９７が取り付け部材７５の裏面側で凹溝９６内に圧縮弾性変形して、両面間に扁平状態に押しつけられ凹所６６が外部とは水密ないしは気密状態に維持される。
【０１２７】
以上の構成で、締めつけ用ねじ８５を緩めて、ねじ孔９５から外すことによりおねじ部４４は取り付け部材７５の凹部７８内に位置される。取り付け用ねじ８１も緩めて第２のめねじ部材３７から外れた位置とすることで、おねじ部４４は間隔３６部分に位置される。この状態は図３に示されると同じ状態である。
【０１２８】
取り付け部材７５は貫通孔７７が取り付け用ねじ８１の首部４５に貫通支持されて、装置本体９１の段差面９３から浮き上がらせ離間させることができる。すなわち、取り付け用ねじ８１を中心として回動可能となる。
【０１２９】
したがって、図１９に示されるように取り付け部材７５を下方に回動させた位置７１′として、凹所６６を開放させ、操作部分であるスイッチ６７の操作を行なうことができる。
【０１３０】
所定の操作を終了した状態で、取り付け部材７５を回動させて図１８の状態に締めつけ復元固定させ完了する。
取り付け用ねじ８１、締めつけ用ねじ８５、に設けた柱状部８２は、平座金４６、ばね座金４７が細径な首部４５に嵌まり合うことにより、ねじの頭部４３の中心と大きくずれ偏倚することを防止するためであり、柱状部８２と嵌まり合うことにより中心が一致して体裁のよいものとなる。このようなことは、他の前実施形態のものについても、それぞれに、当然に適用実施可能なことである。
【０１３１】
本発明第８の実施形態によると、取り付け部材７５を複数の締めつけ用ねじ８５で取り付けることから、比較的に大きな面積を有するものに対して、安定した取り付けをすることができる。
【０１３２】
本実施形態は、Ｏリングガスケット９７を要するものに適用することは、水密状態とする場合に効果的であるが、かならずしも、Ｏリングガスケットと組み合わせることに限定されるものでなく、必要のないものについてもこの締めつけ用ねじを組み合わせ用いる実施形態は有効である。
【０１３３】
図１８の孔３２の部分は、代表的に図１〜図４のものを適用したが、図５〜図１１に示される本発明第２〜第６の実施形態のものを適用し得ることは、あらためて、図示ならびに詳細な説明を行なわないが、組み合わせるなどして実施可能なことは、もちろんのことである。
【０１３４】
本発明は、比較的に小径な取り付け用ねじで、中ぐりをすることができない、たとえば、ねじ径が１２ｍｍ以下、好ましくは数ｍｍ程度のようなねじに適用することが可能である。
【０１３５】
以上、本発明の各実施形態については、アルミニウム合金からなる製品に適用されるものではなく、その他の、合成樹脂成型品、などについても適用実施可能なものである。また、取り付け部材も、蓋やカバーに限定されることなく、要部を必要に応じて開放し、あるいは、取り外し、それらが装置本体から外れてしまわないようにする要のあるように構成される箇所に、適用し得るものであることは、いうまでもないことである。
【０１３６】
【発明の効果】
以上、詳細に説明のように本発明電子装置にらると、取り付け用ねじが挿入される孔の開口側に設けられる第１のめねじ部材と、孔の内部側に第１のめねじ部材とは所定間隔隔てて設けられる第２のめねじ部材と、を有する装置本体と、頭部と先端のおねじ部との間に首部の設けられた取り付け用ねじが、貫通孔に挿入されて該取り付け用ねじによって上記装置本体に取り付けられる取り付け部材と、からなり、取り付け用ねじのおねじ部が装置本体の第１のめねじ部材にねじ込み通過されて、おねじ部が第２のめねじ部材にねじ込まれることで、取り付け部材が装置本体に取り付け固定され、おねじ部が第１，第２のめねじ部材の間に1 されることで、取り付け部材が取り付け用ねじを中心に回動自在にして、取り付け用ねじとともに抜け止めされるように構成したことにより、故意におねじ部を第１のめねじ部材から外さない限り、取り付け用ねじが装置本体から抜け出すことはなく、したがって、取り付け部材は取り付け用ねじに支持される。
【０１３７】
装置本体とは別体のめねじ部材を間隔を隔てて設けることで、比較的小径なねじに対して、取り付け用ねじのおねじを、その間隔内に自由状態に位置させることができ、取り付け用ねじの連続した緩め操作を中断すべき状態を、取り付け用ねじが空転することで確実に感知し得る。
【０１３８】
以上のように、第１のめねじ部材は取り付け用ねじの抜け止めに、第２のめねじ部材は取り付け用ねじの締めつけに、それぞれ機能を明確に分担している。
また、装置本体に設けられる第１のめねじ部材と第２のめねじ部材の少なくとも一方は、装置本体の孔内面に形成された螺旋溝にねじ込まれるねじ込み型の螺旋状ねじ部材とするか、もしくは、装置本体の孔内に埋め込まれる埋め込み型めねじ部材の、いずれかとする構成とすることで、第１のめねじ部材と第２のめねじ部材を、ともに、装置本体の孔内面に形成された螺旋溝にねじ込む螺旋状ねじ部材とすることにより、同一のねじ込み操作で行なうことができる。
【０１３９】
第１のめねじ部材と第２のめねじ部材を、ともに、装置本体の孔内に埋め込ませる埋め込み型めねじ部材とすることにより、装置本体成型時に埋め込ませること、あるいは、成型後に埋め込ませること、が選択し得る。
第１のめねじ部材と第２のめねじ部材とを、螺旋状めねじ部材と埋め込み型めねじ部材とを組み合わせることにより、相互の特徴的な作用、効果をそれぞれ組み合わせ得られる。
【０１４０】
以上のように、本発明によると種々実用上の効果は、きわめて顕著なものである。
【図面の簡単な説明】
【図１】本発明電子装置第１の一実施形態の要部側断面図である。
【図２】本発明電子装置第１の一実施形態の要部側断面図（その１）である。
【図３】本発明電子装置第１の一実施形態の要部側断面図（その２）である。
【図４】本発明電子装置第１の一実施形態の要部側断面図（その３）である。
【図５】本発明電子装置第２の一実施形態における装置本体要部側断面図である。
【図６】本発明電子装置第３の一実施形態における装置本体要部側断面図である。
【図７】本発明に適用される（埋め込み型）めねじ部材の外観図である。
【図８】本発明電子装置第４の一実施形態における装置本体要部側断面図（その１）である。
【図９】本発明電子装置第４の一実施形態における装置本体要部側断面図（その２）である。
【図１０】本発明電子装置第５の一実施形態における装置本体要部側断面図である。
【図１１】本発明電子装置第６の一実施形態における装置本体要部側断面図である。
【図１２】本発明電子装置第７の一実施形態の要部側断面図である。
【図１３】図１２の要部正面図である。
【図１４】図１２とは異なる実施形態の要部正面図および部分断面図である。
【図１５】本発明電子装置第８の一実施形態における取り付け部材（その１）である。
【図１６】本発明電子装置第８の一実施形態における取り付け部材（その２）である。
【図１７】本発明電子装置第８の一実施形態における装置本体要部正面図および断面図である。
【図１８】本発明電子装置第８の一実施形態の要部側断面図である。
【図１９】本発明電子装置第８の一実施形態の作用説明図である。
【図２０】従来の電子装置の要部側断面図である。
【符号の説明】
３１ 装置本体
３２ 孔
３３ 開口
３４ 第１のめねじ部材
３５ 内部
３６ 間隔，間
３７ 第２のめねじ部材
３８ 下孔
３９ 螺旋溝
４１ 取り付け部材
４２ 取り付け用ねじ
４３ 頭部
４４ おねじ部
４５ 首部
４６ 平座金
４７ ばね座金
４９ 部分
５１ めねじ部材
５１−１ 第１のめねじ部材
５１−２ 第２のめねじ部材
５２ めねじ
５３ ローレット目
５５ 下孔
５７ 間隔孔
５８ 段差面
５９ 間隔孔
６１ 電子装置
６２ 筐体本体
６３ 蓋
６５ 装置本体
６６ 凹所
６７ スイッチ
６８ 取り付け部材
６９ 段差面
７１ 位置決めピン
７２ 不貫通孔
７３ 貫通孔
７５ 取り付け部材
７６ 突起
７７ 貫通孔
７８ 凹部
７９ ねじ孔
８１ 取り付け用ねじ
８２ 柱状部
８５ 締めつけ用ねじ
８６ 首部
９１ 装置本体
９３ 段差面
９５ ねじ孔
９６ 凹溝
９７ Ｏリングガスケット
１０１ 不貫通下孔
１０２ 螺旋溝
１０３ めねじ部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic device in a communication field or an information processing field.
The electronic device is provided with various indications and places to be operated for adjustment, inspection, maintenance, etc. from the outside. Unnecessary operations by persons other than operating personnel are performed on these places. In order to prevent this, a cover or the like is provided to protect it from direct contact with eyes.
[0002]
In places where electronic devices are installed in relatively good environments such as indoors, it is easy to operate and inspect by removing covers, etc. In places where the installation environment is unfavorable, removing the cover, etc., in addition to providing a safety cord, etc. to prevent unforeseen situations such as dropping or losing, Therefore, there is a need for a simple and reliable drop-off prevention measure because it requires complicated and troublesome measures to prevent falling.
[0003]
[Prior art]
FIG. 20 shows a sectional side view of a main part of a conventional electronic device to which the above protective measures are taken. In the electronic device 1, a device main body 5 including a housing main body 2 and a lid 3 that accommodates and protects an electronic / communication circuit and the like is integrally coupled by a hinge, a screw, and the like (not shown). In addition, members such as internal electronic / communication circuits and wiring members are not shown in the figure because they are complicated in illustration.
[0004]
A recess 6 is provided on the front side of the lid 3 of the apparatus main body 5, and in this example, a switch 7 is provided in the recess 6, and a cover 8 is attached to the surface with a mounting screw 9 to cover the recess 6. .
[0005]
The housing body 2 and the lid 3 are each formed of an aluminum alloy casting having corrosion resistance, for example, a precision casting by a die casting method. The cover 8 is also a similar metal product, and all are subjected to a surface treatment with appropriate corrosion resistance such as painting.
[0006]
The apparatus main body 5 is provided with a step portion 11 and a recess 12 that opens to the upper side surface of the step portion 11, and the mounting screw 9 penetrates the lower end side of the cover 8 and a screw insertion hole 14 that passes through the recess 12. And is screwed into the screw hole 15 formed in the apparatus main body 5 from the recess 12.
[0007]
The mounting screw 9 is provided with a neck portion 18 slightly smaller than the root diameter of the screw between the head portion 16 and the distal end male screw portion 17, and the circular portion of the neck portion 18 in the vicinity of the male screw portion 17 is provided. An E-type retaining ring (snap ring) 19 is fitted into a groove (not shown) formed in the circumferential direction from the side.
[0008]
The illustrated state shows a state where the attachment screw 9 is screwed into the screw hole 15 and the cover 8 is fastened to the housing body 5 and attached. A flat washer 21 and a spring washer 22 are fitted to the mounting screw 9, and a sufficient tightening state is obtained.
[0009]
The upper end side of the cover 8 is configured so as to be positioned along and in contact with the step 23 surface provided in the apparatus main body 5.
With the above configuration, by loosening the mounting screw 9, the male screw portion 17 comes out of the screw hole 15, so that the head 16 is lifted away from the apparatus body 5, and the cover 8 is rotated around the mounting screw 9. It becomes movable. That is, the cover 8 hangs down on the front side in the figure, the recess 6 is opened, and the switch 7 can be operated.
[0010]
After the predetermined operation of the switch 7 is completed, the cover 8 is rotated to the illustrated state, and the mounting screw 9 is fastened and fixed.
When the mounting screw 9 is loosened as described above, the E-type retaining ring 19 that does not move in the length direction of the mounting screw 9 moves to the front side of the recess 12 and comes into contact therewith. The screw 9 is prevented from coming out of the apparatus body 5. That is, the cover 8 does not come off the apparatus body 5.
[0011]
In this way, the E-type retaining ring 19 only advances and retreats in the recess 12 in response to the tightening and loosening of the mounting screw 9, and the cover 8 is prevented from coming off with a relatively simple structure. However, since the cover 8 can be rotated, the number of mounting screws 9 is limited to one at one place.
[0012]
[Problems to be solved by the invention]
As described above, although it has a relatively simple configuration, in order to form the depression 12 below the side surface, the die casting die can be moved back and forth to the side for forming the depression 12 in addition to the inner and outer double-sided molds. There is a problem that it becomes a complicated one requiring a special type part.
[0013]
Since the E-type retaining ring 19 exists in the recess 12, it can be seen from the outside. For this reason, the E-type retaining ring 19 may be pulled out by mischief or the like. If maintenance personnel loosen the mounting screws 9 without noticing that they have been removed, there is a risk that they will come out of the apparatus body 5 and fall off together with the cover 8.
[0014]
SUMMARY OF THE INVENTION In view of the various problems of the prior art, it is an object of the present invention to provide an electronic device having a good retaining structure and good appearance.
[0015]
[Means for Solving the Problems]
In order to achieve the above object, the electronic device according to the present invention includes a first female screw member provided on an opening side of a hole into which a mounting screw is inserted, and a first female screw member provided on the inner side of the hole. Is a device main body having a second female screw member provided at a predetermined interval, and a mounting screw provided with a neck portion between the head and the male screw portion of the tip is inserted into the through hole, and the mounting screw And a male screw portion of the mounting screw is screwed and passed through the first female screw member of the device main body, and the male screw portion is connected to the first female screw member and the first female screw member. The attachment member is attached to the apparatus main body by passing between the two female screw members and screwed into the second female screw member, and the male screw portion is the first female screw member and the second female screw member. By being positioned between the members above Ri attached member to freely rotate about the screw mounting is to be retained along with the mounting screws.
[0016]
By providing a predetermined interval longer than the length of the male screw portion of the mounting screw between the first female screw member and the second female screw member, the screw portion is positioned at this interval portion. In this state, unless the screw part of the mounting screw is intentionally passed through the first female screw member and pulled out, the mounting screw is pulled out of the apparatus main body. It is supported by the mounting screw and does not fall off.
[0017]
By providing the device main body with a first female screw member and a second female screw member, which are separate from the device main body, with a predetermined interval, Since the male thread of the mounting screw can be positioned in the free state within the interval, the position where the continuous loosening operation of the mounting screw should be interrupted is determined by the idling of the mounting screw at the interval. It can be accurately detected.
[0018]
That is, the first female screw member clearly shares the function for preventing the attachment screw from coming off, and the second female screw member for clearly tightening the mounting screw.
[0019]
At least one of the first female screw member and the second female screw member provided in the apparatus main body is a screw-in type helical screw member that is screwed into a spiral groove formed in the hole inner surface of the apparatus main body, or A suitable configuration and effect can be obtained by any of the embedded female screw members embedded in the holes of the apparatus main body.
[0020]
That is, the first female screw member and the second female screw member are both formed into a spiral screw member that is screwed into a spiral groove formed on the inner surface of the hole of the apparatus main body, thereby performing the same screwing operation. Can and is efficient.
[0021]
Both the first female screw member and the second female screw member are embedded-type female screw members that are embedded in the holes of the apparatus main body so that they can be embedded at the time of molding the apparatus main body or embedded after molding. , Can be selected. In addition, there is no spiral groove in the space between the first female screw member and the second female screw member.
[0022]
By making the first female screw member and the second female screw member a combination of a helical female screw member and an embedded female screw member, there is no need to provide a spiral groove in the space between them.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the electronic device of the present invention will be described in detail with reference to the drawings by a preferred embodiment based on the constituent means. In order to facilitate understanding, the same parts are denoted by the same reference numerals throughout the drawings. In the present invention, all through holes and non-through holes are referred to as holes.
[0024]
FIG. 1 is a sectional side view of a main part of a first embodiment of an electronic device according to the present invention. The first female screw member 34 provided on the opening 33 side of the hole 32 into which the mounting screw for the apparatus main body 31 is inserted and the first female screw member 34 on the inner side 35 of the hole 32 are separated by a predetermined distance (L 1 ) And a second female screw member 37 provided at a distance from each other.
[0025]
This hole 32 has a pitch equal to a predetermined pitch corresponding to the nominal diameter of the nominal dimension in the lower hole 38 and is tapped with a large-diameter insert coil tap to form a female thread-shaped spiral groove 39 on the inner surface of the hole 32. Form.
[0026]
Stainless steel which has a hook bent in the diametrical direction at the tip, has a notch in the bent portion and is slightly larger in diameter than the spiral groove 39, or a helical coil insert (trade name, Helisart) A first female screw member 34 and a second female screw member 37 made of steel are screwed into the spiral groove 39.
[0027]
As described above, each of the first and second female screw members 34 and 37 is a screw-in type helical screw member. However, the first female screw is simplified for convenience of explanation. The member 34 and the second female screw member 37 are abbreviated.
[0028]
First, the hook of the second female screw member 37 is supported on the tip of a predetermined screwing tool (both not shown), and the second female screw member 37 is spirally rotated while rotating the screwing tool in the screwing direction. Insert along the groove 39.
[0029]
The second female screw member 37 is elastically deformed and brought into close contact with the inner surface of the spiral groove 39, and is inserted sequentially. The hook is broken and removed at the notch portion by pushing the screwing tool while rotating it in the reverse direction in a state where it reaches a predetermined position on the inside 35 side of the hole 32, and is taken out together with the screwing tool. The rotation operation of the screwing tool in the reverse direction acts so that the second female screw member 37 bites into the spiral groove 39, and the shape cannot be rotated in the same direction and the shape is stabilized.
[0030]
The first female screw member 34 similar to the second female screw member 37 is inserted in the same manner. The state in which both female screw members 34 and 37 are inserted in this way is the state shown in the figure. The length of the first female screw member 34 is shorter than the length of the second female screw member 37. Although this is for the reason described later, the same length can be arbitrarily set as appropriate.
[0031]
In the state shown in the figure, the shape of the female screw formed on the inner peripheral surfaces of the female screw members 34 and 37 coincides with the pitch together with the nominal diameter of the standard screw, for example.
[0032]
The spiral groove 39 shown in the figure is drawn over the entire length for easy understanding, but conversely, because of the complexity of the illustration, the portions other than the first and second female thread members 34 and 37 are schematically shown by symbols. This state is shown in FIG. This will be described below with reference to both the drawings.
[0033]
In the through hole of the attachment member 41, a portion of the neck 45 having a diameter equal to or smaller than the valley diameter of the external thread 44 between the head 43 and the external thread 44 of the attachment screw 42 is provided. Is formed. A flat washer 46 and a spring washer 47 are inserted on the head 43 side of the mounting screw 42. In this embodiment, the head 43 of the mounting screw 42 is a pan head with a cross hole.
[0034]
The length of the external thread 44 is L 2 Is set to This length L 2 Is the distance L of the distance 36 between the first and second female thread members 34 and 37 on the apparatus main body 31 side. 1 Shorter than. That is, L 1 > L 2 It is.
[0035]
The size of the through hole of the attachment member 41 is simply a size that allows the male screw portion 44 to be inserted, or that a female screw that allows the male screw portion 44 to pass through may be formed. .
[0036]
With the above configuration, the operation of the first embodiment will be described below. Referring to FIG. 3, a state where the male thread portion 44 of the mounting screw 42 is screwed into the first female thread member 34 of the apparatus main body 31 and passed through the inside is shown.
[0037]
In this state, as is apparent from the drawing, the male threaded portion 44 is located at a portion of the space 36 that is intermediate between the first female screw member 34 and the second female screw member 37. Since the inner diameter (crest diameter) of the spiral groove 39 is larger than the outer diameter of the external thread portion 44, the mounting screw 42 has a margin in the length direction (L 1 -L 2 ) Is movable in the axial direction and is free to spin. L 1 That 36 is a predetermined interval means such a relationship.
[0038]
Further, since the neck portion 45 of the mounting screw 42 is fitted to the inner diameter of the first female screw member 34, the neck portion 45 is supported by the inner diameter and does not tilt greatly. That is, the attachment member 41 is rotatable around the neck 45.
[0039]
Even if the mounting screw 42 is not rotated in the loosening direction and is pulled out in the pulling direction, it cannot be pulled out by being blocked by the first female screw member 34 and cannot be pulled out together with the mounting member 41 from the apparatus main body 31 side. Is prevented.
[0040]
Next, referring to FIG. 4, a state in which the male thread portion 44 of the mounting screw 42 is screwed into the second female thread member 37 is shown. This state is nothing but the attachment member 41 being pressed and fixed to the surface on the apparatus main body 31 side by fastening the attachment screw 42.
[0041]
The reason why the length of the first female screw member 34 may be shorter than the length of the second female screw member 37 is that the second female screw member 37 is the length of the threaded portion 44 of the mounting screw 42. However, since the first female screw member 34 only has to withstand the pulling force of the mounting screw 42, it is necessary to have a strength that is sufficient to withstand the tightening force. This is because it is only necessary.
[0042]
However, shortening the first female screw member 34 can shorten the overall length of the mounting screw 42, and thus the depth of the hole 32 can be shortened.
[0043]
As described above, the mounting member 41 is fastened by the cooperative action of the mounting screw 42 according to the present invention and the first and second female screw members 34 and 37 on the apparatus main body 31 side in FIG. The operation of the fixed state shown and the loosened state shown in FIG. 3 that can be rotated around the mounting screw 42 is obtained, and in addition, in the loosened state, the mounting member 41 together with the mounting screw 42 is attached to the apparatus main body 31. It is prevented from coming off from the side.
[0044]
In the present invention, the apparatus main body 31, the attachment member 41, and the like are preferably precision castings of an aluminum alloy material, for example, die casting castings, shell molding castings. Or synthetic resin molded products. For example, it is suitable to be applied to a product whose mechanical strength is not guaranteed even if a female screw is directly formed.
[0045]
The second embodiment of the electronic device of the present invention will be described with reference to FIG. 5. FIG. 5 shows only the device main body 31 side, and the mounting member and the mounting screw are the corresponding portions of FIGS. Can be applied as is.
[0046]
The first female screw member 34 provided on the opening 33 side of the hole 32 into which the mounting screw for the apparatus main body 31 is inserted and the first female screw member 34 on the inner side 35 of the hole 32 are separated by a predetermined distance (L 1 ) And a second female screw member 37 provided at a distance from each other.
[0047]
This hole 32 has a pitch equal to a predetermined pitch corresponding to the nominal diameter of the nominal dimension in the lower hole 38 and is tapped with a large-diameter insert coil tap to form a female thread-shaped spiral groove 39 on the inner surface of the hole 32. Form. According to this embodiment, since the lower hole 38 is a through hole, there is an effect that the cutting waste at the time of tapping is discharged from the end of the through hole. Of course, the tap processing can be penetrated depending on the situation without stopping at the inner side 35 as shown in the figure.
[0048]
Stainless steel which has a hook bent in the diametrical direction at the tip, has a notch in the bent portion and is slightly larger in diameter than the spiral groove 39, or a helical coil insert (trade name, Helisart) A first female screw member 34 and a second female screw member 37 made of steel are screwed into the spiral groove 39.
[0049]
As described above, each of the first and second female screw members 34 and 37 is a screw-in type helical screw member. However, the first female screw is simplified for convenience of explanation. The members 34 and the second female screw member 37 will be referred to.
[0050]
First, the hook of the second female screw member 37 is supported on the tip of a predetermined screwing tool (both not shown), and the second female screw member 37 is spirally rotated while rotating the screwing tool in the screwing direction. Insert along the groove 39.
[0051]
The second female screw member 37 is elastically deformed and brought into close contact with the inner surface of the spiral groove 39, and is inserted sequentially. The hook is broken and removed at the notch portion by pushing the screwing tool while rotating it in the reverse direction in a state where it reaches a predetermined position on the inside 35 side of the hole 32, and is taken out together with the screwing tool. The rotation operation of the screwing tool in the reverse direction acts so that the second female screw member 37 bites into the spiral groove 39, and the shape cannot be rotated in the same direction and the shape is stabilized.
[0052]
The first female screw member 34 similar to the second female screw member 37 is inserted in the same manner. The state in which both female screw members 34 and 37 are inserted in this way is the state shown in the figure. Note that the length of the first female screw member 34 is shorter than the length of the second female screw member 37 as in the previous embodiment, but the same length is also applicable.
[0053]
In the state shown in the figure, the shape of the female screw formed on the inner peripheral surfaces of the female screw members 34 and 37 coincides with the pitch together with the nominal diameter of the standard screw, for example.
[0054]
Since the operation and effect of the mounting member and the mounting screw having the above-described configuration are the same as those in FIGS. 3 and 4 in the previous embodiment, please refer to the above description.
[0055]
A third embodiment of the electronic apparatus according to the present invention will be described with reference to FIG. 6. FIG. 6 shows only the apparatus main body 31 side, and the mounting member and the mounting screw are the same as in the previous embodiment. The corresponding part of FIG. 4 can be applied as it is.
[0056]
The first female screw member 34 provided on the opening 33 side of the hole 32 into which the mounting screw for the apparatus main body 31 is inserted and the first female screw member 34 on the inner side 35 of the hole 32 are separated by a predetermined distance (L 1 ) And a second female screw member 37 provided at a distance from each other.
[0057]
This hole 32 has a pitch equal to a predetermined pitch corresponding to the nominal diameter of the nominal dimension in the lower hole 38 and is tapped with a large-diameter insert coil tap to form a female thread-shaped spiral groove 39 on the inner surface of the hole 32. Form. According to the present embodiment, since the lower hole 38 is a through-hole and has conditions that allow tapping from both sides, tapping provides a predetermined length, that is, an interval 36 from both sides as shown in the figure. And tapping time can be reduced. By providing a large-diameter relief in the portion 49 that does not require tapping on the inner side 35, the tapping length can be further reduced.
[0058]
Stainless steel which has a hook bent in the diametrical direction at the tip, has a notch in the bent portion and is slightly larger in diameter than the spiral groove 39, or a helical coil insert (trade name, Helisart) The first female screw member 34 and the second female screw member 37 made of steel are respectively screwed into the spiral grooves 39 on both sides.
[0059]
As described above, each of the first and second female screw members 34 and 37 is a screw-in type helical screw member. However, the first female screw is simplified for convenience of explanation. The members 34 and the second female screw member 37 will be referred to.
[0060]
First, the hook of the second female screw member 37 is supported on the tip of a predetermined screwing tool (both not shown), and the second female screw member 37 is moved inside while rotating the screwing tool in the screwing direction. Insert along the spiral groove 39 from the end face on the 35 side.
[0061]
The second female screw member 37 is elastically deformed and brought into close contact with the inner surface of the spiral groove 39, and is inserted sequentially. The hook is broken and removed at the notch portion by pushing the screwing tool while rotating it in the reverse direction in a state where it reaches a predetermined position on the inside 35 side of the hole 32, and is taken out together with the screwing tool. The rotation operation of the screwing tool in the reverse direction acts so that the second female screw member 37 bites into the spiral groove 39, and the shape cannot be rotated in the same direction and the shape is stabilized.
[0062]
A first female screw member 34 similar to the second female screw member 37 is inserted in the same manner from the opening 33 side of the hole 32. The state in which both female screw members 34 and 37 are inserted in this way is the state shown in the figure. The order in which the second female screw member 37 and the first female screw member 34 are inserted may be any one of them. Note that the length of the first female screw member 34 is shorter than the length of the second female screw member 37 as in the previous embodiment, but the same length is also applicable.
[0063]
In the state shown in the figure, the shape of the female screw formed on the inner peripheral surfaces of the female screw members 34 and 37 coincides with the pitch together with the nominal diameter of the standard screw, for example.
[0064]
Since the operation, effect, and others of the mounting member and the mounting screw having the above-described configuration are the same as those in FIGS. 3 and 4 in the previous embodiment, refer to the above description as well.
[0065]
FIG. 7 is an external view of a female screw member applied to the present invention. FIG. 7 (a) is a front view and FIG. 7 (b) is a side view. The female screw member 51 has a female screw 52 formed on the inner surface, and two ridged knurls 53 having a wave shape in different directions on the outer surface. The knurled eye 53 has a mountain shape when viewed from the front. Made of stainless steel or brass.
[0066]
A fourth embodiment of the electronic device of the present invention to which the female screw member 51 is applied will be described with reference to FIG. 8. FIG. 8 shows only the apparatus main body 31 side. Similar to the previous embodiment, the corresponding portions of FIGS. 1 to 4 can be applied as they are.
[0067]
The first female screw member 51-1 provided on the opening 33 side of the hole 32 in which the mounting screw of the apparatus main body 31 is embedded, and the second female screw member 51-2 on the inner side 35 of the hole 32 have a predetermined interval ( L 1 ) And a second female screw member 51-2 provided at a distance from each other.
[0068]
In the present embodiment, a mode in which the female screw member 51 is press-fitted will be described. Therefore, a lower hole 55 for press-fitting the female screw member 51 is formed in the hole 32, and the inner diameter of the lower hole 55 is selectively set smaller than the outer diameter of the knurled eye 53.
[0069]
First, when the second female screw member 51-2 is pushed into the lower hole 55 by being pressed into the inner 35 side with an appropriate press device, the knurled eye 53 is pushed into the inner surface of the lower hole 55 and inserted. When the knurls 53 are stopped at a predetermined position, the position is fixed in a state where the knurled eyes 53 are bitten. .
[0070]
Next, the first female screw member 51-1 is inserted into a predetermined position on the opening 33 side in the lower hole 55 in the same manner as shown in FIG. That is, the predetermined position of both the female screw members 51-1 and 51-2 is such that the interval 36 is L as shown in the figure. 1 Each position is fixed in the positional relationship.
[0071]
With the above configuration, the operation of the fourth embodiment will be described below. First, referring to FIG. 3, the reference numeral 34 of the first female screw member is replaced with 51-1, the reference numeral 37 of the second female screw member 37 is replaced with 51-2, and the spiral groove 39 is replaced with the lower hole 55. I decided to. The male screw portion 44 of the mounting screw 42 is screwed into the first female screw member 55-1 of the apparatus main body 31 and is passed through the inside.
[0072]
The male thread portion 44 is located at a portion of the space 36 that is intermediate between the first female screw member 55-1 and the second female screw member 55-2. Since the inner diameter of the lower hole 55 is larger than the outer diameter of the external thread portion 44, the mounting screw 42 has a 36 margin in the length direction (L 1 -L 2 ) Is movable in the axial direction and is free to spin. L 1 36 is set to a predetermined interval having such a relationship.
[0073]
Further, since the neck portion 45 of the mounting screw 42 is fitted to the inner diameter of the first female screw member 51-1, the neck portion 45 is supported by this inner diameter and does not tilt greatly. That is, the attachment member 41 is rotatable around the neck 45.
[0074]
Even if the mounting screw 42 is not rotated in the loosening direction but is pulled out in the pulling direction, the mounting screw 42 is blocked by the first female screw member 51-1 and cannot be pulled out. It is prevented.
[0075]
Next, with reference to FIG. 4, similarly, the reference numerals are changed, and the male screw portion 44 of the mounting screw 42 is screwed into the second female screw member 51-2 and tightened. The attachment member 41 is pressed and fixed to the surface on the apparatus main body 31 side by fastening the attachment screw 42.
[0076]
The length of the first female screw member 51-1 may be shorter than the length of the second female screw member 51-2. The first female screw member 51-1 should be able to withstand the pulling force of the mounting screw 42, while the strength of the male screw portion 44 needs to be sufficient to withstand the tightening force. Therefore, it is sufficient that the length is equal to or more than the minimum length, and if necessary, the length can be shared as the same length.
[0077]
However, shortening the first female screw member 51-1 can shorten the overall length of the mounting screw 42, and the depth of the hole 32 can be shortened accordingly.
[0078]
As described above, the mounting member 41 is tightened by the cooperative action of the mounting screw 42 according to the configuration of the present invention and the first and second female screw members 51-1 and 51-2 on the apparatus main body 31 side. 3 and the loosened state shown in FIG. 3 that can be rotated around the mounting screw 42. In addition, in the loosened state, the mounting member 41 together with the mounting screw 42 is attached to the device. It is prevented from coming off from the main body 31.
[0079]
In the present invention, the apparatus main body 31, the attachment member 41, and the like are preferably precision castings of an aluminum alloy material, for example, die casting castings, shell molding castings. Or synthetic resin molded products. Even if a direct female thread such as the above is formed, it is suitable for application to a product whose mechanical strength is not guaranteed.
[0080]
In the above embodiment of the present invention, the female screw member 51 has been described as being press-fitted into the apparatus main body 31 by post-processing for the sake of convenience of explanation, but the present invention is not limited to this, and the apparatus main body 31 is molded. Of course, it is also applicable to embedding at the same time, but in this case, it is not necessary to have a pilot hole, and it is easier to fix the position more firmly without needing to explain. Will be understood.
[0081]
However, even if it is embedded at the same time, if only the second female screw member 51-2 is so formed and the first female screw member 51-1 is press-fitted after molding, the molding die can be simplified. Can be.
[0082]
The fifth embodiment of the electronic device of the present invention to which the female screw member 51 is applied will be described with reference to FIG. 10. FIG. 10 shows only the device main body 31 side, and the mounting member and the mounting screw are shown. As in the previous embodiment, the corresponding portions of FIGS. 1 to 4 can be applied as they are.
[0083]
The first female screw member 51-1 provided on the opening 33 side of the hole 32 in which the mounting screw for the apparatus main body 31 is embedded, and the first female screw member 51-2 on the inner side 35 of the through hole 32 are predetermined. Interval (L 1 ) And a second female screw member 51-2 provided with a space 36 therebetween.
[0084]
In the present embodiment, a mode in which the female screw member 51 is press-fitted will be described. Therefore, the lower hole 55 for press-fitting the hole 32 female screw member 51 is formed at a predetermined depth from both sides. The inner diameter of the lower hole 55 is selectively set smaller than the outer diameter of the knurled eye 53.
[0085]
An intermediate portion in which the lower holes 55 are formed from both sides has a predetermined interval 36, and this portion is an interval hole 57 having an inner diameter slightly larger than the internal thread 52 of the internal thread member 51. A step surface 58 is formed with respect to 55.
[0086]
First, when the second female screw member 51-2 is pressed and press-fitted into the lower hole 55 on the inner 35 side with an appropriate press device, the knurled eye 53 is pushed into the inner surface of the lower hole 55 and inserted. Then, the positioning is stopped by coming into contact with the stepped surface 58, and the position is fixed in a state in which the knurled eye 53 is bitten.
[0087]
Next, the first female screw member 51-1 is similarly inserted into the lower hole 55 on the opening 33 side so as to contact the step surface 58, thereby being fixed in position as shown in the figure. . That is, the interval 36 (L 1 ) Is set.
[0088]
The insertion order of the first and second female screw members 51-1 and 51-2 is not limited to the above, and can be arbitrarily performed.
According to the present embodiment, in addition to the insertion position of the female screw member 51 being set by the step surface 58, the second female screw member 51-2 is tightened with the mounting screw 42, and the tightening force is the step surface. Since it is received and supported by 58, the strength comparable to that of the case of embedding at the same time is obtained.
[0089]
FIG. 11 shows a sixth embodiment of the electronic apparatus of the present invention, and only the apparatus main body 31 side is shown. As for the attachment member and the attachment screw, the corresponding portions of FIGS. 1 to 4 can be applied as they are, as in the previous embodiment.
[0090]
Referring to FIG. 1A, a first female screw member 51 (not shown) provided on the opening 33 side of the hole 32 into which the mounting screw for the apparatus main body 31 is inserted, and a first female member on the inner 35 side of the hole 32 are referred to. A predetermined interval (L 1 ) And a second female screw member 37 provided at a distance from each other.
[0091]
The hole 32 is provided with a lower hole 38 on the inner side 35, and the lower hole 38 portion has the same pitch as a predetermined pitch corresponding to the nominal diameter of the nominal dimension, and is tapped with a large diameter insert coil tap. A female threaded spiral groove 39 is formed on the inner surface of the hole 32. A portion where the spiral groove 39 is formed and an intermediate portion where the first female screw portion 51 on the opening 33 side is inserted are spacing holes 59 corresponding to the groove diameter of the spiral groove 39.
[0092]
Stainless steel which has a hook bent in the diametrical direction at the tip, has a notch in the bent portion and is slightly larger in diameter than the spiral groove 39, or a helical coil insert (trade name, Helisart) A second female screw member 37 made of steel is screwed into the spiral groove 39. Such a second female screw member 37 is a screw-in type helical screw member, but for convenience of explanation, it is simply referred to as a second female screw member 37.
[0093]
While the hook of the second female screw member 37 is supported on the tip of a predetermined screwing tool (both not shown) and the screwing tool is rotated in the screwing direction, the second female screw member 37 is spirally grooved. Insert along 39.
[0094]
The second female screw member 37 is elastically deformed and brought into close contact with the inner surface of the spiral groove 39, and is inserted sequentially. The hook is broken and removed at the notch portion by pushing the screwing tool while rotating it in the reverse direction in a state where it reaches a predetermined position on the inside 35 side of the hole 32, and is taken out together with the screwing tool. The rotation operation of the screwing tool in the reverse direction acts so that the second female screw member 37 bites into the spiral groove 39, and the shape cannot be rotated in the same direction and the shape is stabilized.
[0095]
On the opening 33 side of the hole 32, the (embedded type) female screw member shown in FIG. 7, that is, the first female screw member 51 in this embodiment, is provided with a predetermined depth on the opening 33 side of the hole 32. A pilot hole 55 for press-fitting the first female screw member 51 is formed. The inner diameter of the lower hole 55 is selectively set smaller than the outer diameter of the knurled eye 53. Thereby, a step surface 58 is formed at the boundary with the gap hole 59.
[0096]
When the first female screw member 51 is pushed into the lower hole 55 by an appropriate press device, the knurled eye 53 is pushed into the inner surface of the lower hole 55 while being inserted, and is positioned in contact with the step surface 58. The
[0097]
This state is as shown in FIG. 5B, and the position is fixed in a state where the knurled eyes 53 are bitten. That is, the positions of the female screw members 37 and 51 are such that the distance 36 is L as shown in the figure. 1 The position is fixed to the relationship.
[0098]
Since the operation and effect of the mounting member and the mounting screw with the above-described configuration are the same as those in FIGS. 3 and 4 in the previous embodiment, please refer to the above description as well. Further, the tap processing can be penetrated depending on the situation without stopping at the inside 35 side as shown in the figure. However, according to the present embodiment, since the screwing length of the second female screw member 37 can be shortened only on the inner side 35, the working time of screwing can be shortened.
[0099]
FIG. 12 shows a sectional side view of a main part of a seventh embodiment of the electronic device of the present invention. The electronic device 61 accommodates and protects an electronic / communication circuit and the like, and a device main body 65 composed of a housing main body 62 and a lid 63 is integrally connected by a hinge, a screw, etc. (not shown). In addition, members such as internal electronic / communication circuits and wiring members are not shown in the figure because they are complicated in illustration.
[0100]
A recess 66 is provided on the front side of the lid 63 of the apparatus main body 65. In this example, a switch 67 is provided, and a mounting member 68 as a cover is attached to the surface by the mounting screw 42 to cover the recess 66.
[0101]
The housing main body 62 and the lid 63 are each formed of an aluminum alloy casting having corrosion resistance, for example, a precision casting by a die casting method. The attachment member 68 is also a similar metal product, and all are subjected to a surface treatment with appropriate corrosion resistance such as painting.
[0102]
The first female screw member 34 provided on the opening 33 side of the hole 32 into which the mounting screw 42 of the apparatus main body 65 is inserted and the first female screw member 34 on the inner side 35 of the hole 32 are separated by a predetermined distance (L 1 ) A second female screw member 37 provided 36 apart.
[0103]
This hole 32 has a pitch equal to a predetermined pitch corresponding to the nominal diameter of the nominal dimension in the lower hole 38 and is tapped with a large-diameter insert coil tap to form a female thread-shaped spiral groove 39 on the inner surface of the hole 32. Form.
[0104]
Stainless steel which has a hook bent in the diametrical direction at the tip, has a notch in the bent portion and is slightly larger in diameter than the spiral groove 39, or a helical coil insert (trade name, Helisart) The first female screw member 34 and the second female screw member 37, which are steel screw-type helical screw members, are screwed into the spiral groove 39.
[0105]
In the through hole of the mounting member 68, a portion of the neck 45 having a diameter equal to or smaller than the valley diameter of the male thread 44 between the head 43 of the mounting screw 42 and the male thread 44 at the tip. Has been inserted. A flat washer 46 and a spring washer 47 are inserted on the head 43 side of the mounting screw 42.
[0106]
The length of the external thread 44 is L 2 The distance L between the first and second female thread members 34 and 37 on the apparatus main body 65 side is set to L. 1 Shorter than L 1 > L 2 It is.
[0107]
Since the above is the same as that of the first embodiment of the present invention shown in FIGS. 1 to 4, the above description should be referred to with the drawings. It should be understood that the reference numeral 65 of the apparatus main body 31 and the reference numeral 68 of the attachment member 41 are replaced with 68.
[0108]
The state of FIG. 12 is the state shown in FIG. 4, and the attachment member 68 is in pressure contact with the apparatus main body 65 with the attachment screw 42 tightened. It is well shown in FIG. 13 that the periphery of the attachment member 68 is fitted and positioned around the surface of the apparatus main body 65 and the step surface 69 around the recess 66.
[0109]
Further, as shown in FIG. 13, the attachment screw 42 is provided only at one place in the lower central portion of the attachment member 68.
With the above-described configuration, the mounting screw 42 is loosened from the state shown in FIG. 12, and the screw portion 44 is positioned at the interval 36 portion as shown in FIG. Thus, it can be rotated around the neck 45 of the mounting screw 42, moved to the position 68 'indicated by the two-dot chain line in the direction of the arrow in FIG. Can be operated.
[0110]
After the predetermined operation is completed, the attachment member 68 is rotated to the position of the stepped surface 69, and the attachment screw 42 is tightened to restore.
The case where the stepped surface 69 is not provided on the apparatus main body 65 side will be described with reference to FIG. 14. As shown in the sectional view of FIG. The positioning pin 71 is embedded on the apparatus main body 65 side, and the non-through hole 72 is provided on the corresponding mounting member 68 side, or the through hole 73 is provided as shown in FIG. It is preferable that the positioning means be as symmetrically spaced as possible.
When the through-hole 73 as shown in FIG. (C) is used, the positioning means can be seen from the outer surface, but when the non-through-hole 72 is used as shown in FIG. This action and effect are not much different from those of FIG.
[0111]
Although the part of the hole 32 in FIG. 12 is typically the one shown in FIGS. 1 to 4, the thing of the second to sixth embodiments of the present invention shown in FIGS. 5 to 11 can be applied. Although not shown or described in detail, it is a matter of course that it can be implemented by combining them.
[0112]
FIG. 15 shows a front view (a) and an AA cross-sectional view (b) of the attachment member 75 according to the eighth embodiment of the present invention. Cylindrical protrusions (bosses) 76 are provided at three locations on the surface side of the four corners of the attachment member 75, and through holes 77 are provided at one location.
[0113]
On the back surface side of the projection 76, a recess 78 having a depth slightly larger than a screw diameter described later and capable of accommodating a male screw portion and a screw having a female screw on the front surface side is inserted here. A hole 79 is formed. The back surface side of the attachment member 75 is a flat plane.
[0114]
The attachment member 75 is made of an aluminum alloy similar to that of the apparatus main body, and is similarly produced by a precision casting method.
FIG. 16A shows a mounting screw and a tightening screw applied to the mounting member 75. The mounting screw 81 has a neck portion 45 that is equal to or smaller than the root diameter of the male screw portion 44 between the head portion 43 and the male screw portion 44 at the tip end, and a screw portion directly below the head portion 43. A columnar portion 82 having a diameter equal to 44 is formed. The length of the external thread 44 is L 2 Is set to A flat washer 46 and a spring washer 47 are arranged below the mounting screw 81.
[0115]
A tightening screw 85 is provided between the head portion 42 and the male screw portion 44 at the tip, and a neck portion 86 having a diameter equal to or smaller than the root diameter of the male screw portion 44 and a screw portion immediately below the head portion 43. A columnar portion 82 having a diameter equal to 44 is formed. As is apparent from the drawing, the length of the neck 86 is set to be shorter than the length of the neck 45 of the mounting screw 81. A flat washer 46 and a spring washer 47 are arranged below the tightening screw 85.
[0116]
The attachment screw 81 and the fastening screw 85 are attached to the attachment member 75 as shown in FIG. That is, from each surface side, the mounting screw 81 is inserted into the through hole 77 of the mounting member 75, and the tightening screw 85 is threaded through the male screw portion 44 into the screw hole 79 and passed.
[0117]
In the state of FIG. (B), the mounting screw 81 can be freely inserted into and removed from the through hole 77, and the male thread portion 44 of the tightening screw 85 seems to be accommodated in the concave portion 78. It is blocked and it is prevented from coming out if it is as it is.
[0118]
That is, the attachment screw 81 is inserted into one place with respect to the attachment member 75, and the tightening screw 85 is screwed and attached to the three protrusions 76.
[0119]
FIG. 17 shows a front view (a) of the main part of the apparatus main body 91 according to the eighth embodiment of the present invention and a cross-sectional view (b) taken along the line BB. The apparatus main body 91 in this embodiment basically conforms to the seventh embodiment of the present invention shown in FIG.
[0120]
That is, a recess 66 is provided on the front side of the apparatus main body 91, and in this example, a switch 67 is provided inside, a flat step surface 93 on the peripheral surface of the recess 66, and one lower left corner at four corners of the step surface 93. Are provided with holes 32 and screw holes 95 at three other locations. Further, in order to avoid the hole 32 and the screw hole 95, a concave groove 96 is inserted into the step surface 93 along the periphery of the concave portion 66, and an O-ring gasket 97 made of synthetic resin rubber is inserted into the concave groove 96. Arrange.
[0121]
The screw hole 95 is formed by first tapping the non-through pilot hole 101 with a predetermined pitch corresponding to the nominal diameter of the nominal dimension, tapping with a large diameter insert coil tap, and forming an internal thread shape on the inner surface. The spiral groove 102 is formed.
[0122]
Next, it has a hook bent in the diametrical direction at the tip, a notch is formed in the bent portion, and is called an insert coil having a slightly larger diameter than the spiral groove 102 or a helical coil insert (trade name, Helisert). It is formed by screwing a female screw member 103 into a spiral groove 102, which is a screw-type helical screw member made of stainless steel.
[0123]
The hole 32 into which the mounting screw 81 is screwed is the same as the configuration of the corresponding portion in FIG. 12, and the first female screw member 34 on the opening 33 side, the second female screw member 37 on the inner side 35, and those A predetermined interval (L 1 36).
[0124]
FIG. 18 shows a main part of an eighth embodiment of the electronic device according to the present invention in a cross-sectional view taken along the line CC in FIG. In the figure, the attachment member 75 is attached to the apparatus main body 91 and is fixed in a pressed state.
[0125]
In the state shown in FIG. 16B, the attachment member 75 is a state in which the attachment screw 81 is screwed into the hole 32 of the apparatus main body 91 and tightened, and the state shown in FIG. 4 or FIG. , Is itself.
[0126]
The tightening screw 85 is screwed into the screw hole 95 of the apparatus main body 91 and tightened. Accordingly, the O-ring gasket 97 is compressed and elastically deformed into the concave groove 96 on the back surface side of the mounting member 75 and pressed between the both surfaces in a flat state, so that the recess 66 is maintained in a watertight or airtight state from the outside.
[0127]
With the above configuration, the male screw portion 44 is positioned in the concave portion 78 of the attachment member 75 by loosening the tightening screw 85 and removing it from the screw hole 95. By loosening the mounting screw 81 to a position away from the second female screw member 37, the male screw portion 44 is positioned at the interval 36 portion. This state is the same as shown in FIG.
[0128]
The attachment member 75 has a through-hole 77 penetratingly supported by the neck 45 of the attachment screw 81 and can be lifted and separated from the step surface 93 of the apparatus main body 91. That is, it can be rotated around the mounting screw 81.
[0129]
Therefore, as shown in FIG. 19, the recess 66 can be opened at the position 71 ′ where the attachment member 75 is rotated downward, and the switch 67 which is the operation portion can be operated.
[0130]
In a state where the predetermined operation is completed, the attachment member 75 is rotated and tightened to the state shown in FIG.
The columnar portion 82 provided on the mounting screw 81 and the tightening screw 85 is largely deviated from the center of the screw head 43 when the flat washer 46 and the spring washer 47 fit into the narrow neck portion 45. This is to prevent this from happening, and by fitting with the columnar portion 82, the centers coincide and the appearance is good. This is naturally applicable to each of the other previous embodiments.
[0131]
According to the eighth embodiment of the present invention, since the attachment member 75 is attached by the plurality of tightening screws 85, stable attachment can be performed on a member having a relatively large area.
[0132]
The present embodiment is effective when applied to a device requiring an O-ring gasket 97, but is not necessarily limited to being combined with an O-ring gasket, and is not necessary. The embodiment using this tightening screw in combination is also effective.
[0133]
Although the part of the hole 32 in FIG. 18 is typically the one of FIGS. 1 to 4, the thing of the second to sixth embodiments of the present invention shown in FIGS. 5 to 11 can be applied. Although not shown or described in detail, it is a matter of course that it can be implemented by combining them.
[0134]
The present invention can be applied to a screw having a relatively small diameter that cannot be bored, for example, a screw diameter of 12 mm or less, preferably about several mm.
[0135]
As described above, each embodiment of the present invention is not applied to a product made of an aluminum alloy, but can be applied to other synthetic resin molded products. Also, the attachment member is not limited to a lid or a cover, and is configured so as to be necessary to open or remove the essential parts as necessary so that they are not detached from the apparatus main body. Needless to say, it can be applied to a place.
[0136]
【The invention's effect】
As described above in detail, according to the electronic device of the present invention, the first female screw member provided on the opening side of the hole into which the mounting screw is inserted, and the first female screw member on the inner side of the hole And a second female screw member provided at a predetermined interval, and a mounting screw provided with a neck between the head and the male screw at the tip is inserted into the through hole. And an attachment member attached to the apparatus main body by the attachment screw, wherein the male screw portion of the attachment screw is screwed and passed through the first female screw member of the device main body, and the male screw portion is the second female screw. By being screwed into the member, the attachment member is attached and fixed to the apparatus main body, and the external thread portion is between the first and second female screw members. 1 As a result, the mounting member is configured to be rotatable about the mounting screw so as to be prevented from coming off together with the mounting screw, so that the thread portion is not intentionally removed from the first female screw member. As long as the mounting screw does not come out of the main body, the mounting member is supported by the mounting screw.
[0137]
By providing a female screw member that is separate from the main unit with a gap, the male screw for the mounting screw can be positioned in a free state within the gap for a relatively small diameter screw. The state in which the continuous loosening operation of the mounting screw is to be interrupted can be reliably detected by the idling of the mounting screw.
[0138]
As described above, the function of the first female screw member is clearly assigned to the retaining screw and the second female member is clearly assigned to the fastening of the mounting screw.
Further, at least one of the first female screw member and the second female screw member provided in the apparatus main body may be a screw-type helical screw member that is screwed into a spiral groove formed in the hole inner surface of the apparatus main body, Alternatively, the first female screw member and the second female screw member are both formed on the inner surface of the hole of the apparatus main body by adopting any one of the embedded female screw members embedded in the hole of the apparatus main body. By using a helical screw member screwed into the formed spiral groove, the same screwing operation can be performed.
[0139]
Both the first female screw member and the second female screw member can be embedded at the time of molding the apparatus main body, or can be embedded after molding, by using embedded female screw members that are embedded in the holes of the apparatus main body. Can be selected.
By combining the first female screw member and the second female screw member with the spiral female screw member and the embedded female screw member, it is possible to combine the characteristic actions and effects of each other.
[0140]
As described above, according to the present invention, various practical effects are extremely remarkable.
[Brief description of the drawings]
FIG. 1 is a side sectional view of an essential part of a first embodiment of an electronic device according to the present invention.
FIG. 2 is a sectional side view (No. 1) of a principal part of the first embodiment of the electronic device according to the present invention;
FIG. 3 is a side sectional view (No. 2) of a principal part of the first embodiment of the electronic apparatus according to the present invention;
FIG. 4 is a sectional side view (No. 3) of a principal part of the first embodiment of the electronic device of the present invention;
FIG. 5 is a side cross-sectional view of a main part of an apparatus main body in a second embodiment of the electronic apparatus according to the present invention.
FIG. 6 is a side cross-sectional view of a main part of an apparatus main body according to a third embodiment of the electronic apparatus of the present invention.
FIG. 7 is an external view of a (embedded type) female screw member applied to the present invention.
FIG. 8 is a side sectional view (No. 1) of a main part of an apparatus main body according to a fourth embodiment of the electronic apparatus of the present invention.
FIG. 9 is a side sectional view (No. 2) of the main part of the main assembly of the electronic apparatus according to the fourth embodiment of the present invention.
FIG. 10 is a side cross-sectional view of a main part of an apparatus main body according to a fifth embodiment of the electronic apparatus of the present invention.
FIG. 11 is a side cross-sectional view of a main part of an apparatus main body according to a sixth embodiment of the electronic apparatus of the present invention.
FIG. 12 is a side sectional view of an essential part of an electronic device according to a seventh embodiment of the present invention.
13 is a front view of the main part of FIG. 12. FIG.
FIG. 14 is a front view and a partial cross-sectional view of a main part of an embodiment different from FIG.
FIG. 15 is a mounting member (No. 1) in an electronic device according to an eighth embodiment of the present invention;
FIG. 16 is a mounting member (No. 2) in an electronic device according to an eighth embodiment of the present invention;
FIGS. 17A and 17B are a front view and a cross-sectional view of the main part of the main body of the electronic device according to the eighth embodiment of the present invention. FIGS.
FIG. 18 is a sectional side view of a main part of an electronic device according to an eighth embodiment of the present invention.
FIG. 19 is an operation explanatory diagram of an eighth embodiment of the electronic device according to the present invention.
FIG. 20 is a sectional side view of a main part of a conventional electronic device.
[Explanation of symbols]
31 Main unit
32 holes
33 opening
34 First female thread member
35 inside
36 intervals, between
37 Second female thread member
38 pilot hole
39 Spiral groove
41 Mounting member
42 Mounting screws
43 head
44 Male thread
45 neck
46 Flat washer
47 Spring washer
49 pieces
51 Female thread member
51-1 First female thread member
51-2 Second female thread member
52 Female thread
53 Knurled eyes
55 Pilot hole
57 spacing holes
58 Stepped surface
59 Spacing hole
61 Electronic equipment
62 Housing body
63 lid
65 Device body
66 recess
67 switch
68 Mounting member
69 Step surface
71 Positioning pin
72 Non-through hole
73 Through hole
75 Mounting members
76 projections
77 Through hole
78 recess
79 Screw holes
81 Mounting screws
82 Columnar part
85 Tightening screw
86 Neck
91 Main unit
93 Step surface
95 Screw hole
96 groove
97 O-ring gasket
101 Non-through hole
102 Spiral groove
103 Female thread member

Claims (2)

取り付け用ねじが挿入される孔の開口側に設けられる第１のめねじ部材と上記孔の内部側に第１のめねじ部材とは所定間隔隔てて設けられる第２のめねじ部材とを有する装置本体と、頭部と先端のおねじ部との間に首部の設けられた取り付け用ねじが貫通孔に挿入され該取り付け用ねじによって上記装置本体に取り付けられる取り付け部材と、
からなり、上記取り付け用ねじのおねじ部が装置本体の第１のめねじ部材にねじ込み通過されて該おねじ部が第１のめねじ部材と第２のめねじ部材との間を通過して第２のめねじ部材にねじ込まれることで上記取り付け部材が装置本体に取り付けられ、上記おねじ部の長さは、装置本体側の第１、第２のめねじ部材の間隔の距離よりも短く構成され、上記おねじ部が第１のめねじ部材と第２のめねじ部材との間に位置されることにより上記取り付け部材が取り付け用ねじを中心に回動自在にして該取り付け用ねじとともに抜け止めされることを特徴とする電子装置。A first female screw member provided on the opening side of the hole into which the mounting screw is inserted, and a second female screw member provided on the inner side of the hole with a predetermined distance from the first female screw member. A mounting member that is attached to the apparatus main body with the mounting screw inserted into the through-hole, and a mounting screw provided with a neck between the head and the male thread on the tip;
The male screw portion of the mounting screw is screwed and passed through the first female screw member of the apparatus main body, and the male screw portion passes between the first female screw member and the second female screw member. The attachment member is attached to the apparatus main body by being screwed into the second female screw member, and the length of the male screw portion is larger than the distance between the first and second female screw members on the apparatus main body side. The mounting screw is configured to be short, and the mounting member can be rotated about the mounting screw by positioning the male screw portion between the first female screw member and the second female screw member. And an electronic device characterized in that the electronic device is prevented from coming off. 上記装置本体に設けられる第１のめねじ部材と第２のめねじ部材の少なくとも一方は装置本体の孔内面に形成された螺旋溝にねじ込まれるねじ込み型の螺旋状ねじ部材であるか、もしくは、装置本体の孔内に埋め込まれる埋め込み型めねじ部材のいずれかであることを特徴とする請求項１項記載の電子装置。  At least one of the first female screw member and the second female screw member provided in the apparatus main body is a screw-in type helical screw member that is screwed into a spiral groove formed in the hole inner surface of the apparatus main body, or 2. The electronic device according to claim 1, wherein the electronic device is any one of embedded female screw members embedded in a hole of the device main body.
JP13819796A 1996-05-31 1996-05-31 Electronic equipment Expired - Fee Related JP4081151B2 (en)

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JP13819796A JP4081151B2 (en) 1996-05-31 1996-05-31 Electronic equipment

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Application Number Priority Date Filing Date Title
JP13819796A JP4081151B2 (en) 1996-05-31 1996-05-31 Electronic equipment

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JPH09321454A JPH09321454A (en) 1997-12-12
JP4081151B2 true JP4081151B2 (en) 2008-04-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7660545B2 (en) 1995-03-27 2010-02-09 Canon Kabushiki Kaisha Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3788891B2 (en) * 1999-10-14 2006-06-21 富士通株式会社 Mobile terminal device
JP3977262B2 (en) * 2003-01-23 2007-09-19 クリオン株式会社 Concrete panels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7660545B2 (en) 1995-03-27 2010-02-09 Canon Kabushiki Kaisha Coupling part, photosensitive drum, process cartridge and electrophotographic image forming apparatus

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JPH09321454A (en) 1997-12-12

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