JP4153612B2

JP4153612B2 - Electronic circuit housing

Info

Publication number: JP4153612B2
Application number: JP37761098A
Authority: JP
Inventors: 正成平松; 寿朗猪子; 常之稲吉
Original assignee: Maspro Denkoh Corp
Current assignee: Maspro Denkoh Corp
Priority date: 1998-12-29
Filing date: 1998-12-29
Publication date: 2008-09-24
Anticipated expiration: 2018-12-29
Also published as: JP2000200981A

Description

【０００１】
【発明の属する技術分野】
本発明は、幹線増幅器、分岐増幅器等のＣＡＴＶ用電子機器における電子回路用ハウジングに関する。
【０００２】
【従来の技術】
従来より、増幅回路等を収納する電子回路用ハウジングとしては、特許公報２６３９４０５号に記載の電子回路用ハウジングがある。この電子回路用ハウジングは、一面が開口した筐体と、筐体の開口面を開閉する蓋体とから成り、蓋体の縁部に、ボルト貫通用の透孔を備えたフランジ部を設け、筐体の縁部には、フランジ部に対応する位置に軸受体を設けている。そして、この軸受体の、フランジ部とは反対側には、凹部が形成されていて、この凹部にボルト螺合用のねじ穴を有する軸体が没入される。また、軸受体のフランジ部との対向面には、軸受体凹部に貫通するボルト挿通穴が設けてあり、このボルト挿通穴を介してフランジ部の透孔に貫通させたボルトが軸体のねじ穴に螺合される。さらに、ボルト挿通穴は、軸体の回動に伴いボルトが移動できるよう形成された長孔となっている。なお、軸受体は、フランジ部との対向面側と、フランジとは反対の側の凹部側とから合わせる一対の成形型により、筐体の成形と一緒に成形することができる。
【０００３】
そして、この電子回路用ハウジングは、通常、筐体に取り付けられた取付金具を用いて、高所に張られた周知のメッセンジャーワイヤに対して吊下げることにより、筐体開口面が水平方向を向き、且つ上記のフランジ部、軸受体、軸体及びボルトから成る開閉蝶着部が筐体開口面の下方縁部に位置するよう配置され使用される。
【０００４】
【発明が解決しようとする課題】
しかし、上記従来の電子回路用ハウジングでは、筐体と蓋体の開閉蝶着部を構成する部品として、筐体に設けた軸受体、及び蓋体に設けたフランジ部の他、ボルト、軸体を要し、部品点数が多いという問題があった。
【０００５】
また、蓋体を筐体に蝶着する際には、軸受体の凹部内に位置させた軸体を指先で支えて保持した上で、ボルトの先部を、蓋体のフランジ部透孔を介して、筐体の軸受体に設けたボルト挿通穴に貫通させ、軸体に設けたねじ穴に位置合せした上で螺合しなければならず、蓋体の筐体への蝶着作業が面倒であるという問題もあった。
【０００６】
本発明は、こうした問題に鑑みなされたものであり、筐体と蓋体の開閉蝶着部の部品点数を少なくし、筐体と蓋体の蝶着が容易にできる電子回路用ハウジングを提供することを目的とする。
【０００７】
【課題を解決するための手段及び発明の効果】
かかる目的を達成するためになされた電子回路用ハウジングは、従来のハウジングと同様、筐体と蓋体とから構成され、そのうち一方（筐体または蓋体）の下方縁部には、この縁部に沿う方向に突出した軸体を有する連結子が一体成形され、他方（蓋体または筐体）の下方縁部には、連結子に対応する位置に、軸体を挿通可能な挿通穴を有する軸受体が一体成形されている。
【０００８】
このため、本発明の電子回路用ハウジングにおいては、軸受体の挿通穴に連結子の軸体を挿通することにより、軸体を回動軸として、蓋体を筐体に対して開閉可能に連結する開閉蝶着部を形成することができる。
また、連結子及び軸受体のうちの少なくとも一方には、蓋体の開閉量を制限する回転制限部が設けられている。蓋体の開閉量は、回転制限部の構成により任意の量で制限可能である。例えば、筐体開口面が水平方向を向いた状態で、蓋体を筐体に対して回動し、蓋体の筐体との接面が水平面よりやや傾いた状態となるまで開くことができるよう回転制限部を構成すれば、開いた蓋体の内面を工具仮置き用等のテーブルとして使用することができる。
【０００９】
このように、本発明の電子回路用ハウジングにおいては、筐体と蓋体の開閉蝶着部を構成する部品が、筐体または蓋体に夫々一体成形された連結子及び軸受体のみとなることから、従来のものに比べ開閉蝶着部の部品点数を少なくすることができる。また、筐体と蓋体を蝶着する際は、軸体を挿通穴に挿通するだけで良いため、筐体と蓋体とを連結する際の作業性を向上できる。
【００１０】
ここで、連結子及び軸受体は、蓋体で筐体の開口面を閉じた状態において筐体の開口面に垂直な方向で対向する一対の成形型により、夫々筐体または蓋体と一体成形することができる。
なお、軸受体は挿通穴を有していることから、軸受体を筐体または蓋体と一体成形するには、例えば、上記の一対の成形型を合わせ、挿通穴となる箇所に棒材を配置した後に材料を流し込む方法を採っても良い。
【００１１】
しかし、より好ましくは、軸受体の形状を下記２箇所の切欠部を有するものにすれば更に良い。即ち、挿通穴の形成面である軸受体の２つの面に、挿通穴から連続し、両面で相反する方向に軸受体端部まで切り欠かれた切欠部を形成し、この２箇所の切欠部の挿通穴軸方向の切り欠き深さの合計を挿通穴軸方向長さに等しくすれば良い。この様にすれば、上記切り欠き方向を抜型方向に一致させ、個々の切欠部に相当する箇所を一対の成形型夫々に分けて作成することができるので、成形型を合わせるだけで、挿通穴を含めた軸受体を、筐体または蓋体と一体成形することができる。
【００１２】
一方、回転制限部の形態としては、軸体を角柱状にし、軸受体にその軸体の回転量を制限する係止部を設ける方式が考えられる。しかし、この方式では、軸体に蓋体の自重のみならず、蓋体の回転量を制限する負荷も掛かることになり、軸体の材料強度上問題となる場合がある。
【００１３】
そこで、連結子の軸体から離れた縁部、または軸受体の挿通穴から離れた縁部に突起固定片を設け、突起固定片を有さない軸受体または連結子、あるいは筐体または蓋体の一部と、突起固定片が当接することにより、蓋体の開閉量を制限する方式としても良い。
【００１４】
しかし、次のように、軸体を挿通穴に挿通した際、連結子の軸受体と当接する面、及び軸受体の連結子と当接する面のうち、いずれか一方には当接面から突出した固定片を設け、他方には蓋体の開閉に伴い固定片が移動可能になるよう固定片を収容する切欠部を設け、切欠部端部の壁面に固定片が当接することによって蓋体の開閉量を制限する方式としても良い。
【００１５】
そして、このようにすれば、軸体には蓋体の自重のみが掛かるようになる上、回転制限部は連結子と軸受体が当接する面内にあることから、この当接面の外側に突起箇所はなく、蓋体を開閉する作業者が衣服を引っかける等の危険はない。一方、次のように、挿通穴に軸体を挿通した後、連結子、及び軸受体のうち一方に抜け防止部材を取り付ければ、蓋体に対して軸体が挿通穴から抜ける軸体の軸方向の荷重が掛かったとしても、蓋体が筐体から外れることはない。
【００１６】
そして、このような抜け防止部材の形態としては、軸体の端部に軸体の一部を縮径することにより環状凹部を設け、そこにＥ形止め輪（Ｅリング）を取り付けるものでも良いし、軸体の端部に軸体の軸方向にねじを螺合するためのねじ穴を設け、そこに挿通穴径より大きい座金を伴ったねじを螺合するものでも良い。
【００１７】
そして、このような抜け防止部材を設けても、開閉蝶着部を構成する部品は、連結子、軸受体、及び抜け防止部材のみとなり、従来のものに比べ、部品点数が少ない上、筐体と蓋体の蝶着も上記の如く容易に行うことができる。
また、連結子の軸体から離れた縁部、または軸受体の挿通穴から離れた縁部に、対する軸受体側または連結子側の面にねじ穴を有する突起部を設け、軸体を挿通穴に挿通した後、軸受体における連結子と反対側の面、または連結子における軸受体と反対側の面に座金の一部が掛かるよう、ねじ穴に対して座金を伴ったねじを螺合すれば、座金と軸受体における連結子と反対側の面、または連結子における軸受体と反対側の面が当接する。この場合は、この座金を伴ったねじが、蓋体の開き量を任意の角度で制限する上記回転制限部として機能する上、軸体の挿通穴からの抜け落ちを防止する上記抜け防止部材としても機能する。
【００１８】
そして、この場合も、開閉蝶着部を構成する部品は、連結子、軸受体、及び、回転制限部であり抜け防止部材でもある座金を伴ったねじのみであり、従来のものに比べ、部品点数は少ない。
【００１９】
【発明の実施の形態】
以下に本発明の実施例を図面と共に説明する。
図１は、本発明の一実施例としての、ＣＡＴＶ用電子機器の電子回路用ハウジング１の全体的構成を示す図である。
【００２０】
図１に示す如く、電子回路用ハウジング１は、一面が開口した筐体２と、筐体２開口面を開閉する蓋体３とから構成され、図示はしないが、内部に周知の電子回路を備えている。また、この筐体２及び蓋体３は、共にアルミダイキャスト製である。
【００２１】
図１に示すように、筐体２は、例えば、電柱間に架設されたメッセンジャーワイヤ４に、取付金具５を介して、蓋体３により閉じられた筐体２の開口面が水平方向を向くよう取り付けられ、使用される。蓋体３は、この筐体２に対して、筐体２開口面の下方縁部の２箇所に設けられた開閉蝶着部６、６’によって蝶着され、筐体２開口面の上下縁部の２箇所（合計４箇所）に設けられたボルト止着部７によって止着されている。
【００２２】
一対の開閉蝶着部６、６’のうち、一方の開閉蝶着部６は、連結子８、軸受体９、及び周知のＥ形止め輪１０（以下、Ｅリングという）から構成され、他方の開閉蝶着部６’は、連結子８’及び軸受体９’のみから構成される。
図２は、開閉蝶着部６（６’）を構成する各部品の形状を示す図である。
【００２３】
連結子８（８’）は、蓋体３を図１のように配置した場合、蓋体３の下方縁部となる位置に一体成形されており、後に詳述する軸受体９（９’）と当接する連結子側当接面１１には、蓋体３の下方縁部に沿って一方向（本実施例では、筐体の開口面に向かって右方向）に突出した軸体１２、及び固定片１３を備える。軸体１２は、蓋体３を開閉する際の回動軸であり、その形状は軸体１２の軸方向に平行な側面に２箇所の向かい合う面取り部１４が形成された円柱形である。この２箇所の面取り部１４を成す面は、蓋体３で筐体２の開口面を閉じたときに筐体２の開口面に対して略垂直となるよう（換言すれば、筐体の下方側壁と平行となるよう）形成されている。そして、２箇所の連結子８、８’のうち、一方の連結子８の軸体１２の連結子側当接面１１と反対側の端部には、図２に示すＥリング１０を取り付けるために、軸体１２の一部を縮径することにより環状凹部１５が形成されている。
【００２４】
軸受体９（９’）は、筐体２の縁部の連結子８（８’）に対応する位置に一体成形されており、連結子８（８’）の連結子側当接面１１と当接する軸受体側当接面１６には、挿通穴１７及び当接面側切欠部１８が形成されている。挿通穴１７は、軸受体９（９’）の軸受体側当接面１６から反対側の端面１９に貫通しており、軸体１２を回動自在に挿通できるよう形成されたものである。この挿通穴１７を穴の軸方向から見た形状は、筐体２開口面に垂直な方向に長い小判形である。また、当接面側切欠部１８は、請求項の切欠部に相当するもので、蓋体３が図１の状態から軸体１２を中心に回動して、蓋体３の筐体２との接面が水平面よりやや傾いた状態となるまで開くのに伴い、固定片１３が移動できるよう形成され、且つ挿通穴１７から連続して、蓋体３とは反対側の方向に、軸受体９（９’）端部に至るまで切り欠かれたものである。さらに、端面１９にも、挿通穴１７から連続して、当接面側切欠部１８の切り欠き方向とは反対方向に、軸受体９（９’）端部に至るまで切り欠かれた端面側切欠部２０が設けられている。当接面側切欠部１８と端面側切欠部２０の挿通穴１７軸方向の切り欠き深さを合計すると、挿通穴１７軸方向長さに等しい。
【００２５】
なお、筐体２開口面周囲の蓋体３との接面には凹溝２１が形成され、防水用パッキン２２が備えられており、蓋体３の筐体２との接面には凹溝２１に対応してパッキン押え用の凸条２３が形成されている。
次に、ボルト止着部７について図１を用いて説明する。４箇所のボルト止着部７は夫々、図１のように、ボルト２４、フランジ部２５、及びボルト固定部２６から構成されている。
【００２６】
ボルト２４は４本共夫々、ねじ溝がボルト２４軸の先部にのみ形成され（図示はしない）、ねじ溝が形成されたねじ部の軸径が、ねじ溝が形成されていないボルト２４頭側のねじ無し部の軸径より大きいものである。
フランジ部２５は、蓋体３の上下縁部に２箇所ずつ計４箇所設けられ、後に詳述するボルト固定部２６と接する面と反対側の面からボルトを螺合するためのねじ穴（図示はしない）を有している。このねじ穴は、その穴の軸方向の構造が途中で２段階に異なっている。即ち、フランジ部２５のボルト固定部２６との接面とは反対側の面から途中までは、雌ねじが形成された雌ねじ部、そこからボルト固定部２６との接面までは、ボルト２４のねじ部の軸径より径が大きい透孔部となっている。この透孔部の軸方向長さはボルト２４のねじ部が納まる程度である。
【００２７】
ボルト固定部２６は、筐体２のフランジ部２５に対応する上下縁部に合計４箇所設けられ、フランジ部２５のねじ穴を通してボルトを螺着するため雌ねじが形成されたねじ穴（図示はしない）を有している。
そして、蓋体３は筐体２に対し以下の手順により蝶着及び止着され、図１の状態となっている。
【００２８】
まず、予め４本のボルト２４を、４箇所のフランジ部２５ねじ穴の雌ねじ部側より夫々螺合し、ボルト２４のねじ部全体がフランジ部２５ねじ穴内の透孔部に位置する状態にする。すると、ボルト２４のねじ無し部とフランジ部２５ねじ穴の雌ねじ部との間には径方向のクリアランスがあるため、ボルト２４頭とボルト２４のねじ部との間にフランジ部２５ねじ穴の雌ねじ部を係止部として挟んで、ボルト２４をボルト２４軸方向に自由に動かすことができる。例えば、この状態でボルト２４を、図１の位置関係において、最もボルト固定部２６から離れた位置に動かすと、ボルト２４は、そのねじ部がフランジ部２５ねじ穴の透孔部に納まり、フランジ部２５ねじ穴の雌ねじ部に係止された状態で、動きが制限される。
【００２９】
次に、蓋体３を筐体２に対して、以下の手順により、開閉蝶着部６、６’にて蝶着する。
まず、図２に示すように、連結子８（８’）及び軸受体９（９’）の連結子側当接面１１と軸受体側当接面１６が向き合う位置関係になるよう筐体２と蓋体３を配置した上で、軸体１２を挿通穴１７に挿通し、連結子側当接面１１と軸受体側当接面１６が接する状態にする。この際、当接面側切欠部１８の壁面をガイドにすれば、軸体１２を挿通穴１７に容易に挿通することができる。このとき、２箇所の連結子８、８’のうち一方の連結子８の軸体１２のみに設けられた環状凹部１５は、挿通穴１７を端面１９側に貫通しており、ここにＥリング１０を取り付ければ、蝶着完了である。
【００３０】
なお、上記操作とは反対に、Ｅリング１０を環状凹部１５から取り外し、軸体１２を挿通穴１７から引き抜けば、蓋体３を開閉蝶着部６、６’より容易に取り外すことができる。
そして、上記蝶着手順の後、以下の手順により、蓋体３を筐体２に、ボルト止着部７にて止着する。
【００３１】
まず、蓋体３を連結子８、８’双方の軸体１２を回動軸として回動させ、蓋体３と筐体２の位置関係が図１の状態になるよう、蓋体３で筐体２開口面を閉じ、蓋体３と筐体２が筐体２開口面で接する状態にする。そして、４本のボルト２４夫々のねじ部を４箇所のボルト固定部２６のねじ穴に夫々螺合することで蓋体３と筐体２の止着は完了する。このとき、軸受体９、９’の挿通穴１７の形状は筐体２開口面に垂直な方向に長い小判形であることから、蓋体３と筐体２の接面を合わせ、防水用パッキン２２と凸条２３が接したとき、軸体１２は挿通穴１７内で筐体２開口面から遠い側の縁部に寄った状態となる。この状態でボルト２４を螺合すれば、軸体１２と挿通穴１７のクリアランスがボルト２４の螺合方向に確保されているため、凸条２３全体に均等な防水用パッキン２２に近づく方向の力を掛けることができ、電子回路用ハウジング１内部の防水性を向上することができる。
【００３２】
図１に示した電子回路用ハウジング１の設置状態において、作業者が内部の電子回路の点検、調整等のため蓋体３を開く場合は、以下の手順により行なう。まず、４箇所のボルト止着部７のボルト２４全てを緩め、ボルト固定部２６のねじ穴から外す。この際、フランジ部２５のねじ穴はボルト２４のねじ部が納まる透孔部を有することから、蓋体３と筐体２が接面で接した状態で全てのボルト２４を個々に外すことができる上、ボルト２４は、ボルト２４頭とボルト２４のねじ部の間にフランジ部２５の雌ねじ部を係止部として挟んだ状態となることから、この雌ねじ部によって係止され、フランジ部２５から抜け落ちることはない。そして、蓋体３を連結子８、８’双方の軸体１２を中心に回動させ、筐体２から開く。蓋体３は、固定片１３が当接面側切欠部１８の壁面と当接することにより、その開き量を制限され、その状態で保持される。つまり、固定片１３と当接面側切欠部１８は、その組み合せで蓋体３の開き量を制限する回転制限部として機能する。
【００３３】
なお、長期間の使用、或いは沿岸地域で使用することにより受ける塩害等のため、軸体１２及び挿通穴１７内壁に錆びが生じても、軸体１２には面取り部１４が形成され、挿通穴１７は小判形の形状を有しており、軸体１２と挿通穴１７の間のクリアランスは大きいので、開閉蝶着部６、６’及び周辺の部品に損傷を与えることなく、蓋体３を開くことができる。
【００３４】
図３は、蓋体３を開き、固定片１３が当接面側切欠部１８の壁面と当接した状態における２箇所の開閉蝶着部６、６’のうち任意の一方を、Ｅリング１０を除いて軸体１２の軸方向から見た図である。図３では、理解を容易にするため蓋体３及び連結子８、８’を実線で、筐体２及び軸受体９、９’を一点鎖線にて示している。また、特に連結子８、８’と軸受体９、９’の蝶着箇所では、連結子８、８’と軸受体９、９’が当接する面１１、１６内の状態を示す。即ち、軸体１２及び固定片１３を含んだ連結子８、８’、挿通穴１７及び当接面側切欠部１８を含み端面側切欠部２０を除いた軸受体９、９’を夫々実線及び一点鎖線で示し、固定片１３と当接面側切欠部１８の壁面が当接した状態を分かりやすくしてある。
【００３５】
図３から、蓋体３はその筐体２との接面が水平面よりやや傾いた状態で保持されることが分かる。従って、作業者は、開いた蓋体３の内面を工具仮置き用等のテーブルとして使用することができる。つまり、蓋体３の筐体２との接面の内側には凹部が形成されており、蓋体３の筐体２との接面が上記の如く水平面よりやや傾いた状態となっても、この凹部を上記のテーブルとして使用することができる。また、蓋体３の筐体２との接面を水平面よりやや傾いた状態とすることで、筐体２内部の電子回路を正面から見ながら作業する際に、上記の蓋体３の凹部内を同時に視界に入れることができるので、作業が行ない易い。
【００３６】
また、固定片１３と当接面側切欠部１８壁面の当接箇所は連結子８、８’及び軸受体９、９’が当接する面１１、１６内にあり、これらの面１１、１６の外側に開閉蝶着部６、６’は突起箇所を有さないことから、作業者が衣服を引っかける等の危険はなく、安全に作業を行うことができる。また、図１に示すように、連結子８の軸体１２端部の環状凹部１５には、Ｅリング１０が取り付けられていることから、蓋体３に対して、軸体１２が挿通穴１７から抜ける軸体１２軸方向の荷重が掛かったとしても、蓋体３が筐体２から外れることはない。つまり、Ｅリング１０は、軸体１２が挿通穴１７から抜けることを防止する抜け防止部材として機能する。
【００３７】
点検、調整等終了後、蓋体３を閉じる場合は、上記操作と反対の手順で蓋体３を閉じれば良い。即ち、蓋体３を連結子８、８’双方の軸体１２を回動軸として上方に回動させ、蓋体３と筐体２の接面を合わせた後、４本のボルト２４を４箇所のボルト固定部２６のねじ穴に夫々螺合する。
【００３８】
以上説明したように、本実施例の電子回路用ハウジング１においては、開閉蝶着部６、６’を構成する部品として、蓋体３に設けた連結子８、８’、筐体２に設けた軸受体９、９’、及びＥリング１０を有するのみで、従来のものに比べ、部品点数が少ない。
【００３９】
また、蓋体３を筐体２に蝶着する際には、連結子８、８’の軸体１２を軸受体９、９’の当接面側切欠部１８の壁面をガイドにして挿通穴１７に挿通した後、連結子８側の軸体１２に設けられた環状凹部１５にＥリング１０を取り付けるのみで、従来のものに比べ、容易に蝶着することができる。
【００４０】
また、蓋体３を連結子８、８’双方の軸体１２を中心に回動させ、筐体２から開くと、固定片１３が当接面側切欠部１８（請求項の切欠部に相当）の壁面と当接することにより回転制限部として機能し、その開き量が制限されるが、この当接箇所は連結子８、８’と軸受体９、９’が当接する面１１、１６内にあり、これらの面１１、１６の外側に本実施例における開閉蝶着部６、６’は突起箇所を有さないことから、作業者が衣服を引っかける等の危険はない。
【００４１】
また、連結子８の軸体１２端部の環状凹部１５には、抜け防止部材として機能するＥリング１０が取り付けられていることから、蓋体３に対して、軸体１２が挿通穴１７から抜ける軸体１２軸方向の荷重が掛かったとしても、蓋体３が筐体２から外れることはない。
【００４２】
さらに、連結子８、８’は、蓋体３の筐体２との接面に垂直な方向で対向する一対の成形型によって、蓋体３と一体成形できる上、軸受体９、９’も、当接面側切欠部１８及び端面側切欠部２０に相当する箇所を、個々の成形型に分けて作成することで、筐体２開口面に垂直な方向で対向する一対の成形型によって、筐体２と一体成形できる。
【００４３】
なお、連結子８、８’の軸体１２の軸径は、挿通穴１７に回動自在に挿通できるよう、挿通穴１７の径より小さくなければならず、軸体１２の成形時にはこの軸径が許容範囲内になるよう管理する必要がある。本実施例では、この観点から連結子８、８’の軸体１２に面取り部１４を設けており、軸体１２を形成する際、上記の一対の成形型の合わせ面を、下記の如く軸体１２の軸方向に平行で、且つ面取り部１４を垂直に分割する面としている。この場合、軸体１２の断面形状を真円とする場合と下記の点で異なるため有利である。
【００４４】
まず、軸体１２の断面形状を真円とした場合、上記の一対の成形型夫々には、軸体１２に相当する箇所が合わせ面で均等に分割され作成されることになる。その作成位置が個々の成形型で軸体１２の軸径方向にずれていると、成形された軸体１２の成形型合わせ面位置における軸径は、設計値としての軸径にずれ量を足したものとなる。一方、本実施例のように面取り部１４が形成された軸体１２では、成形型の合わせ面が、軸体１２の軸方向に平行で、且つ面取り部１４を垂直に分割する面であるため、個々の成形型での作成位置が上記と同様にずれていても、合わせ面における軸径は、断面形状を真円とする場合より、面取りによる軸径の減少分だけ小さくなる。つまり、個々の成形型における軸体１２の位置の軸径方向の許容ずれ量は、面取りによる軸径の減少分だけ大きくなる。
【００４５】
なお、挿通穴１７の径に対して軸体１２の軸径を十分に小さくすれば、軸体１２の断面形状が真円であっても上記許容ずれ量は大きくなるが、開閉蝶着部６、６’の強度は落ちる。
また、この一対の成形型夫々において、軸体１２に相当する箇所が正確な位置に作成されていても、蓋体３を鋳造する際に、その合わせ面が軸径方向に多少ずれる可能性があり、その場合にも上記と同様に、面取りによる軸径の減少分だけ合わせ面の軸径方向ずれを許容することができる。
【００４６】
一方、本実施例で示した軸受体９、９’において、当接面側切欠部１８及び端面側切欠部２０は、軸受体側当接面１６及び端面１９において、挿通穴１７から連続して相反する方向に、軸受体９、９’端部に至るまで切り欠かれたものであり、且つ当接面側切欠部１８及び端面側切欠部２０の挿通穴１７軸方向の切り欠き深さの合計は挿通穴１７軸方向長さに等しい。従って、当接面側切欠部１８及び端面側切欠部２０に相当する箇所を、個々の成形型に分けて作成すれば、筐体２を鋳造する際の抜型方向は、この相反する切り欠き方向に一致しているので、上記の如く軸受体９、９’は筐体２と一体成形できる。
【００４７】
この場合、筐体２を鋳造する際、この一対の成形型の合わせ面が抜き型方向にずれると、挿通穴１７の筐体２開口面に垂直な方向の径が小さくなるが、挿通穴１７の設計上の形状は上記の通り筐体２開口面に垂直な方向に長い小判形であるため、軸体１２を挿通でき、蓋体３の開閉操作に問題が出ない範囲で、このずれを許容することができる。
【００４８】
以上、本発明の一実施例について説明したが、本発明は、上記実施例に限定されるものではなく、種々の態様を採ることができる。
例えば、上記実施例では、連結子側当接面１１に固定片１３を設け、軸受体側当接面１６には当接面側切欠部１８を設け、固定片１３が当接面側切欠部１８の壁面と当接することにより、その開き量を制限することとして説明したが、逆に、連結子側当接面１１に当接面側切欠部１８に相当する切欠部を設け、軸受体側当接面１６に固定片１３を設けるようにしても良い。
【００４９】
また、上記実施例では、蓋体３が、軸体１２を回動軸として図１の状態から回動し、蓋体３の筐体２との接面が水平面よりやや傾いた状態となったとき、固定片１３と当接面側切欠部１８の壁面が当接する形態としたが、連結子側当接面１１における固定片１３の位置、及び当接面側切欠部１８の形状によって、蓋体３の開き角度は任意に設定できることは明らかである。
【００５０】
また、上記実施例では、筐体２に軸受体９、９’を設け、蓋体３に連結子８、８’を設ける形態としたが、これとは逆に筐体２に連結子８、８’を設け、蓋体３に軸受体９、９’を設ける形態としても同様の効果が得られるのは勿論である。
【００５１】
また、上記実施例では、Ｅリング１０を一方の連結子８の軸体１２に設けた環状凹部１５のみに取り付けるものとして説明したが、他方の連結子８’の軸体１２にも環状凹部１５を設けた上、２箇所の環状凹部１５両方に夫々Ｅリング１０を取り付けることとしても良い。この場合は、上記実施例と比べて、蓋体３に対して、軸体１２が挿通穴１７から抜ける軸体１２軸方向の荷重が掛かった場合に、蓋体３が筐体２より一層外れ難くなるという効果がある。
【００５２】
また、上記実施例では、開閉蝶着部を６、６’とし、２箇所としたが、蓋体３保持のため要求される強度、デザイン性等の理由により１箇所、若しくは３箇所以上設けても良いことは当然である。また、ボルト止着部７も４箇所に限定するものではない。
【００５３】
また、開閉蝶着部６、６’は、図４及び図５に示すようにしても良い。
ここで、図４は、この開閉蝶着部６、６’を構成する各部品の形状を示す図である。
また、図５は、図３と同様、筐体２に蝶着された蓋体３を開いた状態におけるこの開閉蝶着部６、６’を、軸体１２の軸方向から見た図であり、蓋体３及び連結子８、８’を実線で、筐体２及び軸受体９、９’を一点鎖線にて示し、特に連結子８、８’及び軸受体９、９’の蝶着箇所では、図３との対応のため、連結子８、８’と軸受体９、９’が当接する面１１、１６内の状態を示している。
【００５４】
図４及び図５に示す連結子８、８’及び軸受体９、９’の形状は、下記の点で上記実施例と異なる。
まず、連結子８、８’は、上記実施例と異なり、連結子側当接面１１に固定片１３を備えず、軸体１２の形状は円柱形である。また、連結子８、８’の軸体１２から離れた縁部には突起固定片２７を備える。
【００５５】
突起固定片２７は、図５に示すように、筐体２に蝶着された蓋体３を、水平方向を向いた筐体２の開口面を閉じた状態から、軸体１２を中心に回動させ、蓋体３の筐体２との接面が水平面よりやや傾いた状態となるまで開いたとき、筐体２開口面縁部の下端２８に当接するよう形成されている。
【００５６】
なお、軸体１２の形状は、上記実施例に示したように円柱形に面取りを２箇所設けた形状としても良いのは勿論であるが、図４及び図５に示すように完全な円柱形としても良く、この場合は、当然、軸体１２の挿通穴１７に対する回動が滑らかになる。
【００５７】
また、筐体２に対する蓋体３の回動可能な角度は、突起固定片２７の連結子８、８’に対する位置により、上記実施例と同様、任意に設定できる。
軸受体９、９’における当接面側切欠部１８と端面側切欠部２０の切り欠き方向は、軸受体側当接面１６及び端面１９において、上記実施例と逆である。即ち、当接面側切欠部１８は挿通穴１７から連続して蓋体３側の方向に、端面側切欠部２０は挿通穴１７から連続して蓋体３と反対側の方向に、夫々切り欠かれている。さらに、当接面側切欠部１８は、連結子側当接面１１に固定片１３がないため大きく取る必要はなく、挿通穴１７から軸受体９、９’端部に至るまで、ほぼ一様な幅の切り欠きとなっている。
【００５８】
図４に示す連結子８、８’及び軸受体９、９’を有する筐体２と蓋体３の蝶着手順は、連結子８、８’の軸体１２を、軸受体９、９’の当接面側切欠部１８の壁面をガイドにして挿通穴１７に挿通し、連結子側当接面１１と軸受体側当接面１６が接する状態にした後、環状凹部１５にＥリング１０を取り付けるのみであり、上記実施例と同様、従来のものに比べ、容易に蝶着することができる。
【００５９】
また、開閉蝶着部６、６’を構成する部品は、上記実施例と同様、連結子８、８’、軸受体９、９’、及びＥリング１０のみで、従来のものに比べて少ない。上記のように蝶着された後、蓋体３を開いたときは、図５に示すように突起固定片２７が筐体２開口面縁部の下端２８に当接する。つまり、突起固定片２７は回転制限部として機能し、蓋体３の開き量を上記実施例と同様に制限できる。この場合は、図４及び図５からわかるように、当接面１１、１６の外側に突起固定片２７がはみ出すことになる。しかし、当接面側切欠部１８の形状は、上記実施例に比べ、軸受体側当接面１６において小さく取られていることから、軸受体９、９’の蓋体３を支える強度が増すことになる。
【００６０】
また、図４及び図５に示す連結子８、８’は、上記実施例と同様、蓋体３の筐体２との接面に垂直な方向で対向する一対の成形型によって、蓋体３に一体成形される。また、軸受体９、９’の当接面側切欠部１８と端面側切欠部２０の切り欠き方向が上記の如く上記実施例と逆であっても、当接面側切欠部１８及び端面側切欠部２０に相当する箇所を、上記実施例と同様、個々の成形型に分けて作成することができるので、筐体２開口面に垂直な方向で対向する一対の成形型によって、軸受体９、９’は挿通穴１７を含めて筐体２に一体成形される。
【００６１】
なお、突起固定片２７は、軸受体９、９’の挿通穴１７から離れた縁部に設けることもでき、この場合は、突起固定片２７が蓋体３の一部と当接することによって、回転制限部として機能する。さらに、連結子８、８’及び軸受体９、９’の形状は、図６に示すようにしても良い。
【００６２】
図６に示す連結子８、８’及び軸受体９、９’の形状は、下記の点で上記実施例と異なる。
連結子８、８’は、上記実施例と異なり、連結子側当接面１１に固定片１３を備えず、軸体１２の形状は円柱形であり、軸体１２の連結子側当接面１１と反対側の端部には軸体１２の軸方向にねじを螺合するためのねじ穴２９を備える。さらに、一対の連結子８、８’のうち一方または双方の、軸体１２から離れた縁部には、軸受体９、９’側の面にねじ螺合用のねじ穴３０を有する突起部３１を備える。
【００６３】
なお、この場合も、軸体１２の形状を、上記実施例に示したように円柱形に面取りを２箇所設けた形状としても良いのは勿論であるが、円柱形とすることにより、軸体１２の挿通穴１７に対する回動が滑らかになる。
また、軸受体９、９’における当接面側切欠部１８と端面側切欠部２０の切り欠き方向は、軸受体側当接面１６及び端面１９において、上記実施例と同じであるが、当接面側切欠部１８は、連結子側当接面１１に固定片１３がないため大きく取る必要はなく、挿通穴１７から軸受体９、９’端部に至るまで、ほぼ一様な幅の切り欠きとなっている。
【００６４】
図６に示す連結子８、８’及び軸受体９、９’の蝶着手順は、以下の通りである。まず、上記実施例と同様、連結子８、８’の軸体１２を軸受体９、９’の当接面側切欠部１８の壁面をガイドにして挿通穴１７に挿通し、連結子側当接面１１と軸受体側当接面１６が接する状態にする。そして、外径が挿通穴１７径よりも大きい座金３２と共にねじ３３を軸体１２のねじ穴２９に対して螺合すれば、上記実施例と同様、容易に蝶着することができる。この場合、座金３２を伴うねじ３３は抜け防止部材として機能し、上記実施例と同様に、軸体１２が挿通穴１７から抜け落ちることを防止することができる。
【００６５】
さらに、座金３４と共にねじ３５を、突起部３１のねじ穴３０に対して螺合すれば、座金３４の一部が軸受体９、９’の端面１９に当接する。そして、連結子８、８’と軸受体９、９’の位置関係は、座金３４と端面１９が当接したときの状態で保持される。つまり、座金３４を伴うねじ３５が回転制限部として機能し、蓋体３の開閉量を任意の開き角度で制限することができる。
【００６６】
実際の使用に際しては、例えば、以下のように操作する。蓋体３を筐体２に対して開閉するときは、突起部３１のねじ穴３０に螺合されたねじ３５を僅かに緩め、座金３４と端面１９の間に僅かなクリアランスがある状態にした後、蓋体３を、軸体１２を中心に回動し開閉する。そして、蓋体３の開閉量をある開き角度で制限するときは、その角度まで回動させた蓋体３を手で支えながら、ねじ３５をねじ穴３０に対してねじ込み、座金３４の一部を軸受体９、９’の端面１９に当接させれば良い。
【００６７】
なお、この場合も、図４及び図５に示した突起固定片２７と同様、当接面１１、１６の外側に突起部３１がはみ出すことになる。しかし、当接面側切欠部１８の形状を、固定片１３がないだけ、上記実施例に比べて、小さくすることができるので、軸受体９、９’の蓋体３を支える強度が増すことになる。
【００６８】
また、図６に示す連結子８、８’は、ねじ穴２９、３０を除き、蓋体３の筐体２との接面に垂直な方向で対向する一対の成形型によって、蓋体３に一体成形される。ねじ穴２９、３０は、蓋体３と連結子８、８’の鋳造後に、所定箇所に形成される。また、軸受体９、９’は、当接面側切欠部１８及び端面側切欠部２０に相当する箇所を、上記実施例と同様、個々の成形型に分けて作成することができるので、筐体２開口面に垂直な方向で対向する一対の成形型によって、挿通穴１７を含めて筐体２に一体成形される。
【００６９】
一方、図６に示した開閉蝶着部６、６’に対して、軸体１２のねじ穴２９をなくした形態（より厳密には、ねじ穴２９に加えて、座金３２とねじ３３もなくした形態）も可能である。図７は、この場合の開閉蝶着部６、６’を、蓋体３を開いた状態において、軸体１２の軸方向から見た図である。この場合、座金３４を伴うねじ３５は、座金３４の一部が端面１９に当接することによって回転制限部として機能する上、座金３４の端面１９に対する変位規制が、軸体１２の挿通穴１７からの抜け落ちを防止することにもなるため、抜け防止部材としても機能する。
【００７０】
そして、この場合の筐体２と蓋体３の蝶着は、連結子８、８’の軸体１２を、軸受体９、９’の当接面側切欠部１８の壁面をガイドにして挿通穴１７に挿通し、連結子側当接面１１と軸受体側当接面１６が接する状態にした後、座金３４と共にねじ３５を、突起部３１のねじ穴３０に対して螺合するだけであり、従来のものに比べ、容易に蝶着することができる。
【００７１】
また、この場合の開閉蝶着部６、６’を構成する部品は、連結子８、８’、軸受体９、９’、及び、回転制限部であり抜け防止部材でもある座金３４を伴うねじ３５のみであり、従来のものに比べ、部品点数は少ない。
【００７２】
なお、蓋体３を筐体２に対して閉じた状態における突起部３１の位置が、連結子８、８’の縁部において筐体２側に近い場合は、蓋体３を僅かな角度だけ開いた状態で、ねじ穴３０が軸受体側当接面１６に掛かり、それ以上の角度では、座金３４を伴ったねじ３５で蓋体３の開き量を制限することはできない。従って、蓋体３の開き角度をより広範な角度範囲で制限したい場合は、突起部３１を連結子８、８’の縁部において、できるだけ筐体２から離れた位置に設ける必要がある。
また、突起部３１の個数を１個に限らず複数個とすることもできる。この場合は、蓋体３の開き角度に応じて、軸受体側当接面１６にねじ穴３０が掛かっていない突起部３１のうち、作業者が操作し易いものを選び、その突起部３１のねじ穴３０に座金３４を伴ったねじ３５を螺合すれば、座金３４の一部が端面１９に当接することにより蓋体３の開き量を制限することができる。そして、この状態で、軸受体側当接面１６にねじ穴３０が掛かっていない突起部３１が他にあれば、そのねじ穴３０に、さらに座金３４を伴ったねじ３５を螺合し、座金３４の一部を端面１９に当接させることにより、挿通穴１７から軸体１２が抜けることをより強固に防止することができる。
【００７３】
なお、突起部３１を設ける箇所は、軸受体９、９’の挿通穴１７から離れた縁部とすることもでき、この場合、ねじ穴３０は突起部３１の連結子８、８’側に設けられる。そして、軸体１２を挿通穴１７に挿通した後、座金３４の一部が連結子８、８’の軸体１２を有する面と反対側の面と当接するよう、ねじ穴３０に対し、座金３４と共にねじ３５を螺合すれば、上記と同様に、座金３４を伴うねじ３５は、回転制限部及び抜け防止部材として機能する。
【図面の簡単な説明】
【図１】電子回路用ハウジングの全体的構造を示す図である。
【図２】開閉蝶着部を構成する部品の形状を示す図である。
【図３】開閉蝶着部を軸体の軸方向から見た図である。
【図４】変形例としての開閉蝶着部を構成する部品の形状を示す図である。
【図５】変形例としての開閉蝶着部を軸体の軸方向から見た図である。
【図６】変形例としての開閉蝶着部を構成する部品の形状を示す図である。
【図７】変形例としての開閉蝶着部を軸体の軸方向から見た図である。
【符号の説明】
１…電子回路用ハウジング、２…筐体、３…蓋体、６、６’…開閉蝶着部、８、８’…連結子、９、９’…軸受体、１０…Ｅリング（抜け防止部材）、１１…連結子側当接面、１２…軸体、１３…固定片、１６…軸受体側当接面、１７…挿通穴、１８…当接面側切欠部、２７…突起固定片（回転制限部）、３２…座金（抜け防止部材）、３３…ねじ（抜け防止部材）、３４…座金（回転制限部及び抜け防止部材）、３５…ねじ（回転制限部及び抜け防止部材）。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a housing for an electronic circuit in CATV electronic equipment such as a main line amplifier and a branching amplifier.
[0002]
[Prior art]
Conventionally, as an electronic circuit housing for storing an amplifier circuit and the like, there is an electronic circuit housing described in Japanese Patent Publication No. 2639405. This electronic circuit housing is composed of a housing that is open on one side and a lid that opens and closes the opening surface of the housing, and is provided with a flange portion provided with a through hole for bolt penetration on the edge of the lid, A bearing body is provided at a position corresponding to the flange portion at the edge of the housing. A concave portion is formed on the side opposite to the flange portion of the bearing body, and a shaft body having a screw hole for screwing is inserted into the concave portion. In addition, a bolt insertion hole that penetrates the bearing body recess is provided on the surface facing the flange portion of the bearing body, and a bolt that penetrates the through hole of the flange portion through the bolt insertion hole is a screw of the shaft body. Screwed into the hole. Further, the bolt insertion hole is a long hole formed so that the bolt can move as the shaft body rotates. The bearing body can be molded together with the casing by a pair of molding dies that are matched from the surface facing the flange portion and the concave portion opposite to the flange.
[0003]
This electronic circuit housing is usually hung from a well-known messenger wire stretched at a high place using a mounting bracket attached to the housing, so that the housing opening surface faces in the horizontal direction. In addition, the open / close hinge part including the flange part, the bearing body, the shaft body, and the bolt is arranged and used so as to be positioned at the lower edge of the housing opening surface.
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional electronic circuit housing, as a component constituting the opening / closing hinge part of the casing and the lid, in addition to a bearing body provided in the casing and a flange provided in the lid, a bolt and a shaft body There was a problem that the number of parts was large.
[0005]
When the lid is hinged to the housing, the shaft positioned in the recess of the bearing body is supported and held by the fingertips, and the bolt ends are inserted into the flange through holes in the lid. Through the bolt insertion hole provided in the bearing body of the housing, and after being aligned with the screw hole provided in the shaft body, the lid must be attached to the housing. There was also the problem of being troublesome.
[0006]
The present invention has been made in view of these problems, and provides an electronic circuit housing that can easily be hinged between the housing and the lid by reducing the number of parts of the opening and closing hinges of the housing and the lid. For the purpose.
[0007]
[Means for Solving the Problems and Effects of the Invention]
Made to achieve this objective Power Similar to the conventional housing, the child circuit housing is composed of a housing and a lid, and a shaft body protruding in a direction along the edge is formed on the lower edge of one of the housings (the housing or the lid). A connector body having an insertion hole through which a shaft body can be inserted is integrally formed at the lower edge of the other (lid or housing) at a position corresponding to the connector.
[0008]
For this reason, in the electronic circuit housing of the present invention, by inserting the shaft body of the connector into the insertion hole of the bearing body, the lid body is connected to the housing so as to be openable and closable with the shaft body as the rotation shaft. An opening / closing hinge part can be formed.
Further, at least one of the connector and the bearing body is provided with a rotation restricting portion that restricts the opening / closing amount of the lid. The opening / closing amount of the lid can be limited by an arbitrary amount by the configuration of the rotation limiting unit. For example, with the housing opening surface facing in the horizontal direction, the lid can be rotated with respect to the housing and opened until the contact surface of the lid with the housing is slightly inclined from the horizontal plane. If the rotation restricting portion is configured as described above, the inner surface of the opened lid can be used as a table for temporarily placing a tool or the like.
[0009]
As described above, in the electronic circuit housing of the present invention, the components constituting the opening / closing hinge part of the housing and the lid are only the connector and the bearing body integrally formed with the housing or the lid, respectively. Therefore, the number of parts of the open / close hinge part can be reduced as compared with the conventional one. Further, when the housing and the lid are hinged, it is only necessary to insert the shaft body through the insertion hole, so that the workability when connecting the housing and the lid can be improved.
[0010]
Here, the connector and the bearing body are integrally formed with the housing or the lid body by a pair of molding dies facing each other in a direction perpendicular to the opening surface of the housing in a state where the opening surface of the housing is closed by the lid body. can do.
In addition, since the bearing body has an insertion hole, in order to integrally mold the bearing body with the housing or the lid body, for example, the above-mentioned pair of molding dies are combined, and a bar material is provided at a position to be the insertion hole. You may take the method of pouring material after arrange | positioning.
[0011]
However, more preferably, the shape of the bearing body is further improved to have the following two notches. That is, a notch portion is formed on the two surfaces of the bearing body, which are the formation surfaces of the insertion holes, continuous from the insertion hole and notched to the end of the bearing body in opposite directions on both surfaces. The total notch depth in the insertion hole axial direction may be made equal to the length of the insertion hole axial direction. In this way, the notch direction can be made to coincide with the die cutting direction, and the portions corresponding to the individual notches can be created separately for each of the pair of molding dies. Can be formed integrally with the housing or the lid.
[0012]
On the other hand, as a form of the rotation restricting portion, a method is conceivable in which the shaft body is formed in a prismatic shape, and a locking portion for restricting the rotation amount of the shaft body is provided on the bearing body. However, in this method, not only the weight of the lid body but also the load that limits the rotation amount of the lid body is applied to the shaft body, which may cause a problem in the material strength of the shaft body.
[0013]
Therefore, a protrusion fixing piece is provided on the edge portion away from the shaft body of the connector or the edge portion away from the insertion hole of the bearing body, and the bearing body or connector without the protrusion fixing piece, or the housing or lid body. It is good also as a system which restrict | limits the opening-and-closing amount of a cover body by contact | abutting a part and protrusion fixing piece.
[0014]
But, Next As described above, when the shaft body is inserted into the insertion hole, either one of the surface that contacts the bearing body of the connector and the surface that contacts the connector of the bearing body protrudes from the contact surface. The other side is provided with a notch for receiving the fixed piece so that the fixed piece can be moved as the lid is opened and closed, and the amount of opening and closing of the lid is reduced by contacting the fixed piece to the wall surface of the end of the notch. A method of limiting may be used.
[0015]
In this way, only the dead weight of the lid body is applied to the shaft body, and the rotation limiting portion is in the surface where the connector and the bearing body abut. There are no protrusions, and there is no danger of an operator who opens and closes the lid catching clothes. on the other hand, Next After inserting the shaft body into the insertion hole, if a slip prevention member is attached to one of the connector and the bearing body, the axial load of the shaft body from which the shaft body comes out of the insertion hole is attached to the lid body. Even if it is applied, the lid body does not come off the casing.
[0016]
And as a form of such a removal prevention member, an annular recess may be provided by reducing the diameter of a part of the shaft body at the end of the shaft body, and an E-shaped retaining ring (E ring) may be attached thereto. A screw hole for screwing a screw in the axial direction of the shaft body may be provided at the end of the shaft body, and a screw with a washer larger than the diameter of the insertion hole may be screwed there.
[0017]
And even if such a slip-off preventing member is provided, the parts constituting the open / close hinge part are only the connector, the bearing body, and the slip-off preventing member, and the number of parts is smaller than the conventional one, and the housing The lid can be easily hinged as described above.
In addition, a protrusion having a screw hole is provided on the surface on the bearing body side or the connector side on the edge portion away from the shaft body of the connector or the edge portion away from the insertion hole of the bearing body, and the shaft body is inserted into the insertion hole. After inserting the screw, the screw with the washer is screwed into the screw hole so that a part of the washer hangs on the surface of the bearing body opposite to the connector or the surface of the connector opposite to the bearing body. For example, the surface of the washer opposite to the connector in the bearing body, or the surface of the connector opposite to the bearing body abuts. In this case, the screw with the washer functions as the rotation restricting portion that restricts the opening amount of the lid at an arbitrary angle, and also serves as the removal preventing member that prevents the shaft body from falling out from the insertion hole. Function.
[0018]
Also in this case, the components constituting the open / close hinge part are only a connector, a bearing body, and a screw with a washer that is a rotation restricting part and a slip-off preventing member. The score is small.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing an overall configuration of an electronic circuit housing 1 of an electronic apparatus for CATV as an embodiment of the present invention.
[0020]
As shown in FIG. 1, an electronic circuit housing 1 is composed of a housing 2 having an opening on one side and a lid body 3 that opens and closes the opening surface of the housing 2. I have. The casing 2 and the lid 3 are both made of aluminum die cast.
[0021]
As shown in FIG. 1, the housing 2 has, for example, a messenger wire 4 installed between utility poles, and an opening surface of the housing 2 closed by a lid 3 via a mounting bracket 5 faces a horizontal direction. Installed and used as such. The lid 3 is hinged to the housing 2 by opening and closing hinges 6 and 6 ′ provided at two locations on the lower edge of the opening surface of the housing 2, and the upper and lower edges of the opening surface of the housing 2. The bolts are fastened by bolt fastening portions 7 provided at two places (four places in total).
[0022]
Of the pair of opening / closing hinges 6 and 6 ′, one opening / closing hinge 6 is composed of a connector 8, a bearing body 9, and a known E-shaped retaining ring 10 (hereinafter referred to as E-ring), and the other The opening / closing hinge part 6 'is composed of only a connector 8' and a bearing body 9 '.
FIG. 2 is a diagram showing the shape of each part constituting the open / close hinge part 6 (6 ′).
[0023]
When the lid 3 is arranged as shown in FIG. 1, the connector 8 (8 ′) is integrally formed at a position to be the lower edge of the lid 3, and a bearing body 9 (9 ′) described in detail later. The connector-side contact surface 11 that contacts with the shaft body 12 protrudes in one direction along the lower edge of the lid 3 (in this embodiment, rightward toward the opening surface of the housing), and A fixed piece 13 is provided. The shaft body 12 is a rotation shaft when the lid body 3 is opened and closed. The shape of the shaft body 12 is a cylindrical shape in which two facing chamfered portions 14 are formed on the side surface parallel to the axial direction of the shaft body 12. The surfaces forming the two chamfered portions 14 are substantially perpendicular to the opening surface of the housing 2 when the opening surface of the housing 2 is closed by the lid 3 (in other words, below the housing). In parallel with the side wall). In order to attach the E-ring 10 shown in FIG. 2 to the end of the shaft 12 of the one connector 8 opposite to the connector-side contact surface 11 of the two connectors 8, 8 ′. In addition, the annular recess 15 is formed by reducing the diameter of a part of the shaft body 12.
[0024]
The bearing body 9 (9 ′) is integrally formed at a position corresponding to the connector 8 (8 ′) at the edge of the housing 2, and is connected to the connector-side contact surface 11 of the connector 8 (8 ′). An insertion hole 17 and a contact surface side notch 18 are formed in the contact body side contact surface 16 that contacts. The insertion hole 17 penetrates from the bearing body side contact surface 16 of the bearing body 9 (9 ′) to the opposite end surface 19 and is formed so that the shaft body 12 can be rotatably inserted. The shape of the insertion hole 17 viewed from the axial direction of the hole is an oval shape that is long in the direction perpendicular to the opening surface of the housing 2. Further, the abutting surface side notch portion 18 is Term 1 corresponds to a notch, and the lid 3 is rotated from the state shown in FIG. 1 around the shaft body 12 until the contact surface of the lid 3 with the housing 2 is slightly inclined from the horizontal plane. Accordingly, the fixed piece 13 is formed so as to be movable, and is continuously cut out from the insertion hole 17 to the end of the bearing body 9 (9 ′) in the direction opposite to the lid body 3. Is. Further, the end face 19 is also continuously cut out from the insertion hole 17 in the direction opposite to the notch direction of the notch 18 on the contact face side until reaching the end of the bearing body 9 (9 ′). A notch 20 is provided. When the notch depths in the axial direction of the insertion hole 17 of the contact surface side notch 18 and the end surface side notch 20 are summed, they are equal to the axial length of the insertion hole 17.
[0025]
A concave groove 21 is formed on the contact surface with the lid 3 around the opening surface of the housing 2, and a waterproof packing 22 is provided. The concave surface is provided on the contact surface of the lid 3 with the housing 2. Corresponding to 21, a ridge 23 for packing pressing is formed.
Next, the bolt fixing part 7 will be described with reference to FIG. Each of the four bolt fastening portions 7 includes a bolt 24, a flange portion 25, and a bolt fixing portion 26 as shown in FIG.
[0026]
In each of the four bolts 24, a screw groove is formed only at the tip of the shaft of the bolt 24 (not shown), and the shaft diameter of the screw portion in which the screw groove is formed is 24 bolts in which the screw groove is not formed. It is larger than the shaft diameter of the screw-free part on the side.
The flange portion 25 is provided at a total of four locations on the top and bottom edge portions of the lid body 3 in total, and screw holes (not shown) for screwing bolts from the surface opposite to the surface in contact with the bolt fixing portion 26 described in detail later. Have no). The screw hole has two axially different structures in the axial direction of the hole. That is, from the surface opposite to the contact surface with the bolt fixing portion 26 of the flange portion 25 to the middle, the internal thread portion where the internal thread is formed, and from there to the contact surface with the bolt fixing portion 26, the screw 24 It is a through-hole part whose diameter is larger than the axial diameter of the part. The axial length of the through hole is such that the threaded portion of the bolt 24 can be accommodated.
[0027]
A total of four bolt fixing portions 26 are provided on the upper and lower edges corresponding to the flange portion 25 of the housing 2, and screw holes (not shown) in which female screws are formed to screw bolts through the screw holes of the flange portion 25. )have.
The lid 3 is hinged and fastened to the casing 2 by the following procedure, and is in the state shown in FIG.
[0028]
First, four bolts 24 are screwed in advance from the female screw side of the four flange portions 25 screw holes, so that the entire screw portions of the bolts 24 are positioned in the through holes in the flange portion 25 screw holes. . Then, since there is a radial clearance between the unthreaded portion of the bolt 24 and the female screw portion of the flange portion 25 screw hole, the female screw of the flange portion 25 screw hole is provided between the bolt head 24 and the screw portion of the bolt 24. The bolt 24 can be freely moved in the axial direction of the bolt 24 by sandwiching the portion as a locking portion. For example, when the bolt 24 is moved to the position farthest from the bolt fixing portion 26 in the positional relationship of FIG. 1 in this state, the bolt 24 is accommodated in the through hole portion of the flange portion 25 screw hole, and the flange 24 The movement is restricted in the state of being locked to the female screw portion of the portion 25 screw hole.
[0029]
Next, the lid 3 is hinged to the casing 2 by the opening / closing hinges 6 and 6 'according to the following procedure.
First, as shown in FIG. 2, the housing 2 and the housing 8 are in a positional relationship in which the connector-side contact surface 11 and the bearing-body-side contact surface 16 of the connector 8 (8 ′) and the bearing body 9 (9 ′) face each other. After the lid 3 is disposed, the shaft body 12 is inserted into the insertion hole 17 so that the connector side contact surface 11 and the bearing body side contact surface 16 are in contact with each other. At this time, the shaft body 12 can be easily inserted into the insertion hole 17 by using the wall surface of the abutting surface side notch 18 as a guide. At this time, the annular recess 15 provided only in the shaft body 12 of one connector 8 out of the two connectors 8 and 8 ′ passes through the insertion hole 17 toward the end face 19, and here the E-ring If 10 is attached, the butterfly is complete.
[0030]
Contrary to the above operation, if the E-ring 10 is removed from the annular recess 15 and the shaft body 12 is pulled out from the insertion hole 17, the lid 3 can be easily removed from the opening / closing hinges 6 and 6 '. .
Then, after the butterfly attachment procedure, the lid 3 is fixed to the housing 2 by the bolt fixing portion 7 according to the following procedure.
[0031]
First, the lid 3 is rotated with the shafts 12 of both the connectors 8 and 8 'as the rotation axis, and the lid 3 and the housing 2 are in the housing shown in FIG. The body 2 opening surface is closed so that the lid 3 and the housing 2 are in contact with each other at the housing 2 opening surface. Then, the fastening of the lid 3 and the housing 2 is completed by screwing the screw portions of the four bolts 24 into the screw holes of the four bolt fixing portions 26, respectively. At this time, since the shape of the insertion hole 17 of the bearing body 9, 9 ′ is an oval shape that is long in a direction perpendicular to the opening surface of the housing 2, the contact surface of the lid body 3 and the housing 2 is matched, and the waterproof packing When the ridge 22 is in contact with the shaft 22, the shaft body 12 is in a state of being close to the edge on the side farther from the opening surface of the housing 2 in the insertion hole 17. If the bolts 24 are screwed in this state, the clearance between the shaft body 12 and the insertion hole 17 is secured in the screwing direction of the bolts 24, so that the force in the direction approaching the waterproof packing 22 that is even for the entire protrusions 23. The waterproofness inside the electronic circuit housing 1 can be improved.
[0032]
In the installation state of the electronic circuit housing 1 shown in FIG. 1, when the operator opens the lid 3 for inspection, adjustment, etc. of the internal electronic circuit, the following procedure is performed. First, all the bolts 24 of the four bolt fastening portions 7 are loosened and removed from the screw holes of the bolt fixing portions 26. At this time, since the screw hole of the flange portion 25 has a through-hole portion in which the screw portion of the bolt 24 is accommodated, all the bolts 24 can be individually removed in a state where the lid 3 and the housing 2 are in contact with each other. In addition, the bolt 24 is in a state in which the female screw portion of the flange portion 25 is sandwiched between the head of the bolt 24 and the screw portion of the bolt 24 as a locking portion. It will not fall out. Then, the lid 3 is rotated about the shafts 12 of both the connectors 8 and 8 ′ and opened from the housing 2. The lid 3 is held in that state by the fixed piece 13 being in contact with the wall surface of the contact surface side cutout 18 so that the opening amount is limited. In other words, the fixed piece 13 and the abutting surface side notch 18 are limited in rotation that limits the opening amount of the lid 3 by the combination thereof. Department and And function.
[0033]
Even if the shaft body 12 and the inner wall of the insertion hole 17 are rusted due to salt damage caused by long-term use or use in a coastal area, the shaft body 12 is formed with a chamfered portion 14 and the insertion hole 17 has an oval shape, and since the clearance between the shaft body 12 and the insertion hole 17 is large, the lid body 3 can be mounted without damaging the open / close hinges 6 and 6 'and surrounding parts. Can be opened.
[0034]
FIG. 3 shows that the lid 3 is opened, and any one of the two open / close butterfly portions 6 and 6 ′ in a state where the fixed piece 13 is in contact with the wall surface of the contact surface side notch 18 is connected to the E ring 10. It is the figure seen from the axial direction of the shaft body 12 except for. In FIG. 3, for easy understanding, the lid 3 and the connectors 8 and 8 ′ are indicated by solid lines, and the housing 2 and the bearing bodies 9 and 9 ′ are indicated by dashed lines. In particular, in the hinged part between the connectors 8, 8 'and the bearing bodies 9, 9', the state in the surfaces 11, 16 where the connectors 8, 8 'and the bearing bodies 9, 9' abut is shown. That is, the bearings 9 and 9 ′ including the connecting members 8 and 8 ′ including the shaft body 12 and the fixing piece 13, the insertion hole 17, and the contact surface side notch portion 18 and excluding the end surface side notch portion 20 are respectively shown by solid lines and It is indicated by a one-dot chain line, and the state where the fixed piece 13 and the wall surface of the abutting surface side notch 18 are in contact with each other is easily understood.
[0035]
From FIG. 3, it can be seen that the lid 3 is held in a state where the contact surface with the housing 2 is slightly inclined from the horizontal plane. Therefore, the operator can use the inner surface of the opened lid 3 as a table for temporary placement of tools. That is, a recess is formed inside the contact surface of the lid 3 with the housing 2, and even if the contact surface of the lid 3 with the housing 2 is slightly inclined from the horizontal plane as described above, This recess can be used as the table. In addition, by making the contact surface of the lid 3 with the casing 2 slightly inclined from the horizontal plane, when working while viewing the electronic circuit inside the casing 2 from the front, Can be put into view at the same time, so it is easy to work.
[0036]
Further, the abutment portion between the fixed piece 13 and the abutment surface side notch 18 wall surface is in the surfaces 11 and 16 where the connectors 8 and 8 ′ and the bearing bodies 9 and 9 ′ abut. Since the opening / closing hinges 6 and 6 ′ do not have protrusions on the outer side, there is no danger of an operator catching clothes, and the work can be performed safely. As shown in FIG. 1, since the E-ring 10 is attached to the annular recess 15 at the end of the shaft body 12 of the connector 8, the shaft body 12 is inserted into the insertion hole 17 with respect to the lid body 3. Even if a load is applied in the axial direction of the shaft body 12 that comes off the cover body 3, the lid body 3 does not come off the housing 2. In other words, the E-ring 10 is a slip prevention part that prevents the shaft body 12 from slipping out of the insertion hole 17. With materials And function.
[0037]
When the lid 3 is closed after completion of inspection, adjustment, etc., the lid 3 may be closed by a procedure opposite to the above operation. That is, the lid body 3 is pivoted upward with the shaft bodies 12 of both the connectors 8 and 8 'as pivot axes, and the contact surfaces of the lid body 3 and the housing 2 are aligned. The bolts are respectively screwed into the screw holes of the bolt fixing portions 26.
[0038]
As described above, in the electronic circuit housing 1 according to the present embodiment, the connectors 8 and 8 ′ provided on the lid 3 and the housing 2 are provided as components constituting the open / close hinges 6 and 6 ′. Only the bearing bodies 9 and 9 'and the E-ring 10 are provided, and the number of parts is small as compared with the conventional one.
[0039]
Further, when the lid 3 is hinged to the housing 2, the shaft body 12 of the connectors 8, 8 'is used as a guide for the wall surface of the abutment surface side notch 18 of the bearing bodies 9, 9' as an insertion hole. After being inserted through 17, the E-ring 10 is simply attached to the annular recess 15 provided in the shaft body 12 on the side of the connector 8, so that it can be easily hinged as compared with the conventional one.
[0040]
Further, when the lid body 3 is rotated about the shaft bodies 12 of both the connectors 8 and 8 ′ and opened from the housing 2, the fixed piece 13 is brought into contact with the notch 18 on the abutting surface side (claimed). Term Rotation is limited by contacting the wall of the notch) Department and Although the opening amount is limited, the contact portion is in the surfaces 11 and 16 where the connectors 8 and 8 ′ contact the bearing bodies 9 and 9 ′. Since the open / close hinges 6 and 6 ′ in the present embodiment do not have protruding portions on the outside, there is no danger that an operator may catch clothes.
[0041]
Further, the annular recess 15 at the end of the shaft body 12 of the connector 8 has a slip-off preventing portion. With materials Since the E-ring 10 that functions as a cover is attached, even if a load is applied to the cover 3 in the axial direction of the shaft 12 where the shaft 12 is removed from the insertion hole 17, the cover 3 remains in the housing. There is no departure from 2.
[0042]
Further, the connectors 8 and 8 ′ can be integrally formed with the lid 3 by a pair of molding dies facing in the direction perpendicular to the contact surface of the lid 3 with the housing 2, and the bearing bodies 9 and 9 ′ are also formed. The portions corresponding to the contact surface side cutout portion 18 and the end face side cutout portion 20 are created by dividing them into individual molds, so that a pair of molds facing in the direction perpendicular to the opening surface of the housing 2 Can be integrally formed with the housing 2.
[0043]
In addition, the shaft diameter of the shaft body 12 of the connectors 8 and 8 ′ must be smaller than the diameter of the insertion hole 17 so that the shaft body 12 can be rotatably inserted into the insertion hole 17. Must be managed within the allowable range. In this embodiment, the chamfered portion 14 is provided on the shaft body 12 of the connector 8, 8 'from this point of view, and when the shaft body 12 is formed, the mating surfaces of the pair of molding dies are arranged as follows. The surface is parallel to the axial direction of the body 12 and the chamfered portion 14 is divided vertically. This is advantageous because it differs from the case where the cross-sectional shape of the shaft body 12 is a perfect circle in the following points.
[0044]
First, when the cross-sectional shape of the shaft body 12 is a perfect circle, a portion corresponding to the shaft body 12 is equally divided and formed on the mating surface in each of the pair of molds. If the creation position is shifted in the axial diameter direction of the shaft body 12 by each molding die, the shaft diameter at the molding die mating surface position of the molded shaft body 12 is less than the designed shaft diameter. Will be. On the other hand, in the shaft body 12 in which the chamfered portion 14 is formed as in the present embodiment, the mating surface of the mold is parallel to the axial direction of the shaft body 12 and the chamfered portion 14 is divided vertically. Even if the production positions in the individual molds are shifted in the same manner as described above, the shaft diameter at the mating surface is smaller by the reduction in the shaft diameter due to chamfering than when the cross-sectional shape is a perfect circle. That is, the allowable deviation amount in the axial diameter direction of the position of the shaft body 12 in each mold is increased by the reduction in the shaft diameter due to chamfering.
[0045]
If the shaft diameter of the shaft body 12 is sufficiently small with respect to the diameter of the insertion hole 17, the allowable deviation increases even if the cross-sectional shape of the shaft body 12 is a perfect circle, but the opening / closing hinge 6 , 6 'strength drops.
Further, in each of the pair of molding dies, even when the portion corresponding to the shaft body 12 is created at an accurate position, when the lid body 3 is cast, there is a possibility that the mating surface is slightly shifted in the axial diameter direction. In this case as well, similarly to the above, the axial displacement of the mating surfaces can be allowed by the reduction in the shaft diameter due to chamfering.
[0046]
On the other hand, in the bearing bodies 9 and 9 ′ shown in the present embodiment, the contact surface side cutout portion 18 and the end surface side cutout portion 20 are reciprocally continuous from the insertion hole 17 in the bearing body side contact surface 16 and the end surface 19. The total depth of the notch in the axial direction of the insertion hole 17 of the contact surface side notch 18 and the end surface side notch 20 is cut out to the end of the bearing body 9, 9 ′. Is equal to the axial length of the insertion hole 17. Therefore, if the portions corresponding to the contact surface side cutout portion 18 and the end face side cutout portion 20 are created by dividing them into individual molds, the mold drawing direction when casting the casing 2 is the opposite cutout direction. Therefore, the bearing bodies 9 and 9 ′ can be integrally formed with the housing 2 as described above.
[0047]
In this case, when the casing 2 is cast, if the mating surfaces of the pair of molds are displaced in the punching die direction, the diameter of the insertion hole 17 in the direction perpendicular to the opening surface of the casing 2 is reduced. As described above, the design shape is an oval shape that is long in the direction perpendicular to the opening surface of the housing 2. Can be tolerated.
[0048]
As mentioned above, although one Example of this invention was described, this invention is not limited to the said Example, A various aspect can be taken.
For example, in the above-described embodiment, the fixed piece 13 is provided on the connector side contact surface 11, the contact surface side notch portion 18 is provided on the bearing body side contact surface 16, and the fixed piece 13 is the contact surface side notch portion 18. However, conversely, the connector-side contact surface 11 is provided with a notch portion corresponding to the contact surface-side notch portion 18 so that the bearing body-side contact is achieved. The fixed piece 13 may be provided on the surface 16.
[0049]
Moreover, in the said Example, the cover body 3 turned from the state of FIG. 1 by making the shaft body 12 into the rotating shaft, and the contact surface with the housing | casing 2 of the cover body 3 was in the state which inclined slightly from the horizontal surface. At this time, the fixed piece 13 and the wall surface of the contact surface side cutout portion 18 are in contact with each other. However, depending on the position of the fixed piece 13 on the connector side contact surface 11 and the shape of the contact surface side cutout portion 18, the lid Obviously, the opening angle of the body 3 can be set arbitrarily.
[0050]
Moreover, in the said Example, although it was set as the form which provided the bearing bodies 9 and 9 'in the housing | casing 2, and provided the connector 8 and 8' in the cover body 3, on the contrary, the connector 8, Needless to say, the same effect can be obtained by providing 8 ′ and providing the cover 3 with the bearings 9 and 9 ′.
[0051]
In the above embodiment, the E-ring 10 is described as being attached only to the annular recess 15 provided in the shaft body 12 of one connector 8, but the annular recess 15 is also attached to the shaft body 12 of the other connector 8 '. In addition, the E-ring 10 may be attached to both of the two annular recesses 15. In this case, as compared with the above embodiment, the lid 3 is further detached from the housing 2 when a load is applied to the lid 3 in the axial direction of the shaft 12 through which the shaft 12 is removed from the insertion hole 17. It has the effect of becoming difficult.
[0052]
In the above embodiment, the opening / closing hinges are 6 and 6 'and are provided at two locations. However, one or three or more locations are provided for reasons such as strength and design required for holding the lid 3. Of course it is good. Moreover, the bolt fastening part 7 is not limited to four places.
[0053]
The open / close hinges 6 and 6 'may be as shown in FIGS.
Here, FIG. 4 is a figure which shows the shape of each component which comprises this open / close hinge part 6 and 6 '.
FIG. 5 is a view of the open / close hinged portions 6 and 6 ′ viewed from the axial direction of the shaft body 12 in a state in which the lid 3 hinged to the housing 2 is opened, as in FIG. 3. The lid 3 and the connectors 8 and 8 'are shown by solid lines, and the housing 2 and the bearing bodies 9 and 9' are shown by alternate long and short dash lines, and in particular, the hinged portions of the connectors 8 and 8 'and the bearing bodies 9 and 9' For the sake of correspondence with FIG. 3, a state in the surfaces 11, 16 where the connectors 8, 8 ′ and the bearing bodies 9, 9 ′ abut is shown.
[0054]
The shapes of the connectors 8 and 8 ′ and the bearing bodies 9 and 9 ′ shown in FIGS. 4 and 5 differ from the above-described embodiment in the following points.
First, the connectors 8 and 8 'are different from the above embodiment in that the connector-side contact surface 11 is not provided with the fixing piece 13, and the shape of the shaft body 12 is cylindrical. Further, a protrusion fixing piece 27 is provided at the edge of the connectors 8 and 8 ′ away from the shaft body 12.
[0055]
As shown in FIG. 5, the protrusion fixing piece 27 rotates the lid 3 hinged to the housing 2 around the shaft body 12 from the state in which the opening surface of the housing 2 facing in the horizontal direction is closed. When the contact surface of the lid 3 with the housing 2 is opened until it is slightly inclined with respect to the horizontal plane, the lid 3 is formed so as to contact the lower end 28 of the edge of the opening surface of the housing 2.
[0056]
It should be noted that the shape of the shaft body 12 may of course be a columnar shape having two chamfers as shown in the above embodiment, but a complete columnar shape as shown in FIGS. In this case, naturally, the rotation of the shaft body 12 with respect to the insertion hole 17 becomes smooth.
[0057]
Further, the angle at which the lid 3 can rotate with respect to the housing 2 can be arbitrarily set in the same manner as in the above embodiment, depending on the position of the protrusion fixing piece 27 with respect to the connectors 8 and 8 '.
The notch directions of the contact surface side notch portion 18 and the end surface side notch portion 20 in the bearing bodies 9 and 9 ′ are opposite to those of the above-described embodiment in the bearing body side contact surface 16 and the end surface 19. That is, the contact surface side notch 18 is continuously cut from the insertion hole 17 in the direction toward the lid 3, and the end surface side cutout 20 is continuously cut from the insertion hole 17 in the direction opposite to the lid 3. It is missing. Further, the contact surface side notch portion 18 does not need to be large because there is no fixed piece 13 on the connector side contact surface 11, and is substantially uniform from the insertion hole 17 to the ends of the bearing bodies 9 and 9 ′. The width is a notch.
[0058]
The hinge procedure of the housing 2 and the lid 3 having the connectors 8 and 8 ′ and the bearing bodies 9 and 9 ′ shown in FIG. 4 is performed by connecting the shaft body 12 of the connectors 8 and 8 ′ to the bearing bodies 9 and 9 ′. The contact surface side notch portion 18 is inserted into the insertion hole 17 using the wall surface of the contact surface side cutout portion 18 as a guide so that the connector side contact surface 11 and the bearing body side contact surface 16 are in contact with each other. It is only attached, and it can be easily buttered as compared with the conventional example as in the above embodiment.
[0059]
Further, the components constituting the opening / closing hinges 6 and 6 'are only the connectors 8, 8', the bearing bodies 9 and 9 ', and the E-ring 10 as in the above-described embodiment, and are fewer than the conventional ones. . When the lid 3 is opened after being hinged as described above, the protrusion fixing piece 27 comes into contact with the lower end 28 at the edge of the opening surface of the housing 2 as shown in FIG. That is, the protrusion fixing piece 27 is limited in rotation. Department and And the opening amount of the lid 3 can be limited in the same manner as in the above embodiment. In this case, as can be seen from FIGS. 4 and 5, the protrusion fixing piece 27 protrudes outside the contact surfaces 11 and 16. However, since the shape of the abutting surface side notch portion 18 is made smaller in the bearing body side abutting surface 16 than in the above embodiment, the strength for supporting the lid body 3 of the bearing bodies 9, 9 'is increased. become.
[0060]
4 and 5 is similar to the above-described embodiment in that the lid 3 is formed by a pair of molds facing each other in a direction perpendicular to the contact surface of the lid 3 with the housing 2. Are integrally molded. Further, even if the notch directions of the contact surface side notch portion 18 and the end surface side notch portion 20 of the bearing bodies 9 and 9 ′ are opposite to those in the above-described embodiment as described above, the contact surface side notch portion 18 and the end surface side. Since the portion corresponding to the notch 20 can be created separately for each mold as in the above embodiment, the bearing body 9 is formed by a pair of molds facing in the direction perpendicular to the opening surface of the housing 2. , 9 ′ are integrally formed in the housing 2 including the insertion hole 17.
[0061]
The protrusion fixing piece 27 can also be provided at the edge portion away from the insertion hole 17 of the bearing body 9, 9 ′. In this case, the protrusion fixing piece 27 comes into contact with a part of the lid body 3, Rotation limit Department and And function. Further, the shapes of the connectors 8, 8 ′ and the bearing bodies 9, 9 ′ may be as shown in FIG.
[0062]
The shapes of the connectors 8 and 8 ′ and the bearing bodies 9 and 9 ′ shown in FIG. 6 are different from the above embodiment in the following points.
Unlike the above embodiment, the connectors 8 and 8 ′ do not include the fixed piece 13 on the connector side contact surface 11, the shape of the shaft body 12 is cylindrical, and the connector side contact surface of the shaft body 12. 11 is provided with a screw hole 29 for screwing a screw in the axial direction of the shaft body 12. Further, at one or both of the pair of connectors 8 and 8 ′, a protrusion 31 having a screw hole 30 for screw screwing on the surface on the bearing body 9 or 9 ′ side at the edge portion away from the shaft body 12. Is provided.
[0063]
In this case as well, the shaft body 12 may have a cylindrical shape with two chamfers as shown in the above embodiment. The rotation with respect to the 12 insertion holes 17 becomes smooth.
Further, the notch directions of the abutment surface side notch 18 and the end surface side notch 20 in the bearing bodies 9 and 9 ′ are the same as those in the above embodiment in the bearing body side abutment surface 16 and the end surface 19, but the abutment. The surface-side notch 18 does not need to be large because there is no fixed piece 13 on the connector-side contact surface 11, and has a substantially uniform width from the insertion hole 17 to the end of the bearing body 9, 9 ′. It is missing.
[0064]
The hinge procedure for the connectors 8, 8 'and the bearing bodies 9, 9' shown in FIG. 6 is as follows. First, similarly to the above-described embodiment, the shaft body 12 of the connectors 8 and 8 ′ is inserted into the insertion hole 17 using the wall surface of the abutting surface side cutout portion 18 of the bearing bodies 9 and 9 ′ as a guide, The contact surface 11 and the bearing body side contact surface 16 are brought into contact with each other. Then, if the screw 33 is screwed into the screw hole 29 of the shaft body 12 together with the washer 32 having an outer diameter larger than the diameter of the insertion hole 17, it can be easily hinged as in the above embodiment. In this case, the screw 33 with the washer 32 is a drop prevention part. With materials The shaft body 12 can be prevented from falling out of the insertion hole 17 in the same manner as in the above embodiment.
[0065]
Furthermore, when the screw 35 is screwed together with the screw hole 30 of the protrusion 31 together with the washer 34, a part of the washer 34 comes into contact with the end face 19 of the bearing bodies 9, 9 ′. The positional relationship between the connectors 8 and 8 ′ and the bearing bodies 9 and 9 ′ is maintained in a state where the washer 34 and the end surface 19 are in contact with each other. That is, the screw 35 with the washer 34 is limited in rotation. Department and And the opening / closing amount of the lid 3 can be limited by an arbitrary opening angle.
[0066]
In actual use, for example, the following operation is performed. When the lid 3 is opened and closed with respect to the housing 2, the screw 35 screwed into the screw hole 30 of the projection 31 is slightly loosened so that there is a slight clearance between the washer 34 and the end surface 19. Thereafter, the lid 3 is rotated around the shaft 12 to open and close. When the opening / closing amount of the lid 3 is limited by a certain opening angle, the screw 35 is screwed into the screw hole 30 while supporting the lid 3 rotated to that angle by hand, and a part of the washer 34 is May be brought into contact with the end face 19 of the bearing body 9, 9 ′.
[0067]
In this case as well, the protrusion 31 protrudes outside the contact surfaces 11 and 16 as in the protrusion fixing piece 27 shown in FIGS. 4 and 5. However, since the shape of the notch 18 on the contact surface side can be reduced as compared with the above-described embodiment as long as there is no fixed piece 13, the strength for supporting the lid 3 of the bearing bodies 9, 9 'is increased. become.
[0068]
Further, the connectors 8 and 8 ′ shown in FIG. 6 are attached to the lid 3 by a pair of molds facing each other in a direction perpendicular to the contact surface of the lid 3 with the housing 2 except for the screw holes 29 and 30. It is integrally molded. The screw holes 29 and 30 are formed at predetermined positions after the lid 3 and the connectors 8 and 8 'are cast. Further, the bearing bodies 9 and 9 ′ can be formed by dividing the portions corresponding to the contact surface side cutout portion 18 and the end face side cutout portion 20 into individual molds as in the above embodiment. The housing 2 including the insertion hole 17 is integrally molded by a pair of molding dies facing in the direction perpendicular to the opening surface of the body 2.
[0069]
On the other hand, with respect to the open / close hinges 6 and 6 ′ shown in FIG. 6, the screw hole 29 of the shaft body 12 is eliminated (more strictly speaking, in addition to the screw hole 29, there is no washer 32 and screw 33. Is also possible. FIG. 7 is a view of the opening / closing hinges 6 and 6 ′ in this case as viewed from the axial direction of the shaft body 12 in a state where the lid body 3 is opened. In this case, the screw 35 with the washer 34 is restricted in rotation by a part of the washer 34 coming into contact with the end face 19. Department and In addition, since the displacement restriction with respect to the end face 19 of the washer 34 also prevents the shaft body 12 from coming off from the insertion hole 17, the slip prevention portion With materials Even it works.
[0070]
In this case, the hinges of the housing 2 and the lid body 3 are inserted through the shaft body 12 of the connectors 8 and 8 'using the wall surface of the notch 18 on the contact surface side of the bearing bodies 9 and 9' as a guide. After inserting into the hole 17 and bringing the connector side contact surface 11 and the bearing body side contact surface 16 into contact with each other, the screw 35 together with the washer 34 is simply screwed into the screw hole 30 of the protrusion 31. Compared to conventional ones, it can be easily hinged.
[0071]
In this case, the components constituting the opening / closing hinges 6 and 6 ′ are the connectors 8 and 8 ′, the bearing bodies 9 and 9 ′, and the rotation limiter. In the department Preventing part With wood There are only screws 35 with a washer 34, and the number of parts is small compared to the conventional one.
[0072]
In addition, when the position of the protrusion 31 in the state where the lid 3 is closed with respect to the casing 2 is close to the casing 2 side at the edges of the connectors 8 and 8 ′, the lid 3 is only slightly inclined. In the opened state, the screw hole 30 is engaged with the bearing body side contact surface 16, and at an angle larger than that, the opening amount of the lid 3 cannot be limited by the screw 35 with the washer 34. Therefore, when it is desired to limit the opening angle of the lid 3 in a wider range of angles, it is necessary to provide the protrusion 31 at a position as far away from the housing 2 as possible at the edge of the connector 8, 8 ′.
Further, the number of the protrusions 31 is not limited to one, but may be plural. In this case, according to the opening angle of the lid 3, a projection 31 that is not easily threaded by the operator is selected from the projections 31 that do not have the screw holes 30 on the bearing-body-side contact surface 16. If the screw 35 with the washer 34 is screwed into the hole 30, a part of the washer 34 abuts against the end surface 19, so that the opening amount of the lid 3 can be limited. In this state, if there is another protrusion 31 that does not have the screw hole 30 on the bearing-body-side contact surface 16, a screw 35 with a washer 34 is further screwed into the screw hole 30, and the washer 34. It is possible to more firmly prevent the shaft body 12 from being removed from the insertion hole 17 by bringing a part of the shaft member 12 into contact with the end surface 19.
[0073]
In addition, the location which provides the projection part 31 can also be made into the edge part away from the penetration hole 17 of the bearing bodies 9 and 9 ', and the screw hole 30 is in the connector 8, 8' side of the projection part 31 in this case. Provided. Then, after inserting the shaft body 12 into the insertion hole 17, the washer 34 is placed against the screw hole 30 so that a part of the washer 34 comes into contact with the surface of the connectors 8, 8 ′ opposite to the surface having the shaft body 12. When the screw 35 is screwed together with the screw 34, the screw 35 with the washer 34 is restricted in rotation as described above. Part Blow-out prevention part With materials And function.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall structure of an electronic circuit housing.
FIG. 2 is a diagram showing the shapes of parts constituting the open / close hinge part.
FIG. 3 is a view of the open / close hinge part as seen from the axial direction of the shaft body.
FIG. 4 is a diagram showing the shape of parts constituting an open / close hinge part as a modification.
FIG. 5 is a view of a modified opening / closing hinge part as seen from the axial direction of the shaft body.
FIG. 6 is a diagram showing the shape of parts constituting an open / close hinge part as a modification.
FIG. 7 is a view of a modified opening / closing hinge part as seen from the axial direction of the shaft body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Electronic circuit housing, 2 ... Housing, 3 ... Lid, 6, 6 '... Opening / closing hinge part, 8, 8' ... Connector, 9, 9 '... Bearing body, 10 ... E-ring Member), 11 ... connector side contact surface, 12 ... shaft body, 13 ... fixed piece, 16 ... bearing body side contact surface, 17 ... insertion hole, 18 ... notch portion on the contact surface side, 27 ... projection fixing piece ( Rotation restriction part), 32... Washer (detachment prevention member), 33... Screw (detachment prevention member), 34 .. washer (rotation restriction part and removal prevention member), 35... Screw (rotation restriction part and removal prevention member).

Claims

一面が開口した筐体と、前記筐体開口部を開閉する蓋体と、から成り、内部に電子回路が収納可能で、前記筐体の開口面が水平方向を向くよう配置され使用される電子回路用ハウジングにおいて、
前記筐体と前記蓋体とのいずれか一方の下方縁部に、該縁部に沿う方向に突出した軸体を有する連結子を一体成形すると共に、
前記筐体と前記蓋体とのうち前記連結子を設けない他方の下方縁部の前記連結子に対応する位置に、前記軸体が挿通可能な挿通穴を有する軸受体を一体成形し、
前記挿通穴に前記軸体を回動自在に挿通することによって、該軸体を回動軸とする前記筐体と前記蓋体の開閉蝶着部を形成し、
前記連結子、及び前記軸受体のうち、少なくとも一方に、前記筐体と前記蓋体の開閉量を制限する回転制限部を設けており、
さらに、
前記連結子の前記軸体は、その突出する方向に平行な側面には、２箇所の向かい合う面取り部が、前記蓋体で前記筐体の開口面を閉じたときに前記筐体の下方側壁と平行になるような位置関係で形成された円柱形であり、
前記軸受体における挿通穴は、前記軸体が通される方向からみた形状が前記筐体の下方側壁と平行な方向に長い小判形となっており、
前記回転制限部は、
前記連結子における前記軸受体との当接面、及び前記軸受体における前記連結子との当接面のいずれか一方に、該当接面から突出した固定片を設け、
前記軸受体における前記連結子との当接面、及び前記連結子における前記軸受体との当接面のうち前記固定片を設けない他方の当接面には、前記蓋体の開閉に伴う前記固定片の移動が可能になるよう前記固定片を収納するための切欠部を設け、
該切欠部端部の壁面と前記固定片とが当接することによって前記筐体と前記蓋体の開閉量を制限すると共に、
前記連結子と前記軸受体との当接面内において、前記蓋体の開閉に伴う前記固定片の移動，および，前記切欠部端部の壁面と前記固定片との当接が実現される構造とした
ことを特徴とする電子回路用ハウジング。An electronic device comprising a housing having an opening on one side and a lid that opens and closes the opening of the housing. The electronic circuit can be stored therein, and the electronic device is disposed and used so that the opening surface of the housing faces in a horizontal direction. In the circuit housing,
While integrally forming a connector having a shaft body projecting in a direction along the edge at the lower edge of either the housing or the lid,
A bearing body having an insertion hole through which the shaft body can be inserted is integrally formed at a position corresponding to the connector on the other lower edge portion of the housing and the lid body where the connector is not provided.
By inserting the shaft body into the insertion hole so as to be rotatable, the casing having the shaft body as a rotation shaft and the opening / closing hinge part of the lid are formed,
At least one of the connector and the bearing body is provided with a rotation restricting portion that restricts an opening / closing amount of the housing and the lid ,
further,
The shaft body of the connector has a side surface parallel to the projecting direction, and two facing chamfered portions are formed on the lower side wall of the housing when the opening surface of the housing is closed with the lid. It is a cylindrical shape formed in a positional relationship so as to be parallel,
The insertion hole in the bearing body has an oval shape that is long in the direction parallel to the lower side wall of the housing, as viewed from the direction in which the shaft body is passed.
The rotation limiter is
A fixing piece protruding from the corresponding contact surface is provided on any one of the contact surface with the bearing body in the connector and the contact surface with the connector in the bearing body,
The contact surface of the bearing body with the connector, and the other contact surface of the contact surface of the connector with the bearing body where the fixed piece is not provided are provided with the opening and closing of the lid. Provide a notch for storing the fixed piece so that the fixed piece can be moved,
While limiting the opening and closing amount of the housing and the lid body by contacting the wall of the end portion of the notch and the fixed piece,
Structure in which the movement of the fixed piece accompanying opening and closing of the lid and the contact between the wall surface of the end portion of the notch and the fixed piece are realized in the contact surface between the connector and the bearing body A housing for an electronic circuit characterized by the above.

前記筐体開口面の下方縁部の複数箇所それぞれに前記開閉蝶着部が設けられており、The opening / closing hinge part is provided at each of a plurality of locations on the lower edge of the housing opening surface,
該開閉蝶着部それぞれを形成する前記連結子の軸体が、前記蓋体の下方縁部に沿った同一の方向に突出しているThe shaft body of the connector forming each of the opening / closing hinges protrudes in the same direction along the lower edge of the lid.
ことを特徴とする請求項１に記載の電子回路用ハウジング。The electronic circuit housing according to claim 1.

前記挿通穴に前記軸体を挿通した後、前記連結子、及び前記軸受体のうち一方に、前記軸体が前記挿通穴から抜けることを防止する抜け防止部材を取り付ける
ことを特徴とする請求項１または２に記載の電子回路用ハウジング。After the shaft body is inserted into the insertion hole, a slip prevention member for preventing the shaft body from slipping out of the insertion hole is attached to one of the connector and the bearing body. The housing for electronic circuits as described in 1 or 2.