JP3920614B2

JP3920614B2 - Enclosure

Info

Publication number: JP3920614B2
Application number: JP2001306570A
Authority: JP
Inventors: 源悟佐々木
Original assignee: Fujitsu Telecom Networks Ltd
Current assignee: Fujitsu Telecom Networks Ltd
Priority date: 2001-10-02
Filing date: 2001-10-02
Publication date: 2007-05-30
Anticipated expiration: 2021-10-02
Also published as: JP2003110253A

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば小型機器に適用される筐体に関する。
【０００２】
【従来の技術】
従来、この種の小型機器では、重量、コスト、デザインなどの観点から、板金製筐体に代えて樹脂（モールド）製筐体が主流となっている。
小型機器は、修理、保守を目的として分解できる構造としている。その組立部品にネジを使用している。
図２７および図２８に第一従来例を示す。
筐体１は、四角形状の基板３の３辺に壁体４を立設し、基板３に４個の円ボス５を立設したアッパーカバー２と、アッパーカバー２と同様に四角形状の基板７の３辺に壁体８を立設し、基板７に円ボス５を受ける穴付きの座９を設けたロアカバー６と、ロアカバー６の下面側から座９を介して円ボス５に螺合されるネジ１０とで構成されている。
【０００３】
本例では、ネジ１０によってアッパーカバー２とロアカバー６とが固定されるようになっている。
図２９および図３０は第二従来例を示す。
本例では、第一従来例における筐体１の前方側または背面側の円ボス５，５と座９，９を、爪１４，１４と爪受け１５、１５とに置き換えている。
【０００４】
従って、アッパーカバー１２とロアカバー１３とは、図３０に示すように、筐体１１の組立時に、筐体１１の前方側または背面側（本例では、前方側）に設けた爪１４，１４と爪受け１５，１５とを係合し、残りの２箇所において筐体１と同様にネジ止めすることにより、アッパーカバー１２とロアカバー１３とが固定される。
【０００５】
図３１および図３２は第三従来例を示す。
本例では、第二従来例と同様に、爪１９，１９と爪受け２０，２０との係合、および円ボス５へのネジ９の螺着によってアッパーカバー１７とロアカバー１８とを固定している。
本例では、第二従来例に比し、爪１９，１９が長く、爪受け２０，２０がロアカバー１８の基板２１に設けた穴部によって構成されている。
【０００６】
従って、アッパーカバー１７とロアカバー１８とは、図３２に示すように、筐体１６の組立時に、筐体１６の前方側または背面側（本例では、前方側）に設けた爪１９，１９と爪受け２０，２０とを係合し、残りの２箇所において筐体１と同様にネジ止めすることにより、アッパーカバー１７とロアカバー１８とが固定される。
【０００７】
【発明が解決しようとする課題】
しかし、従来の筐体１，１１，１６では、ネジ１０による固定を行っているため、組立工数が多く、コスト高となるという不具合がある。
また、ネジ１０による固定では、相手部材（アッパーカバーまたはロアカバー）に円ボス５が必要となる。
ところが、円ボス５は、モールド外観のヒケ対策が必要となり、筐体側面より内側に設けることになるので、外形寸法が大きくなる。
【０００８】
すなわち、図３３に示すように、側面がヒケるので、図３４に示すように、このヒケを考慮して側面２２から円ボス５までの寸法Ｌを大きくしておく必要があった。
また、ネジ止めの場合、ネジのスペースが必要となり、外形寸法も大きくなる。図３５（ａ）は、側面ネジの場合、図３６（ｂ）は、背面ネジの場合を示す。図中、ハッチングで示す領域がデッドスペースである。
【０００９】
なお、ネジを廃止し、爪と爪受けによる係合だけで筐体を構成すると、落下衝撃などにより筐体が分解し、小型機器の筐体としては提供できない。
本発明は斯かる従来の問題点を解決するために為されたもので、その目的は、ネジを用いないで構成できかつ落下衝撃などにより分解しない筐体を提供することにある。
【００１０】
【課題を解決するための手段】
請求項１に係る発明は、四角形状の基板の３辺に壁体を立設するとともに、対向する前記壁体にそれぞれ２つの爪を立設して成る第一筐体部と、この第一筐体部と同様に四角形状の基板の３辺に壁体を立設し、前記爪と対向する位置に該爪をそれぞれ嵌入させるとともに係止する係止片を備えた穴を設けて成る第二筐体部と、この第二筐体部の穴の縁部に取り付けられ、該穴に嵌入される前記爪を該穴に係止する断面コ字状の係止部材とを備え、前記第一筐体部と前記第二筐体部とは、両者の前記壁体同士を当接して一側に開口部を形成し、前記穴は、前記爪と前記係止部材とを嵌入させる四角形状の大穴部と、この大穴部に連接し前記爪の嵌入時に前記係止部材を待避させる四角形状の小穴部とを形成し、前記係止部材は、前記第一筐体部と前記第二筐体部との組付前に前記大穴部の縁部を跨いで取り付けられ該縁部を介して前記小穴部に移動させられており、前記第一筐体部と前記第二筐体部との組付時に前記大穴部内に嵌入され前記係止片を該大穴部の縁部に係止した前記爪に向かって前記大穴部に移動させられて前記爪に圧接して該爪を前記大穴部に係止するように構成されたことを特徴とする。
【００１１】
請求項２に係る発明は、請求項１記載の筐体において、前記爪は、対向する壁体に向かって突出していることを特徴とする。
請求項３に係る発明は、請求項１記載の筐体において、前記穴は、前記大穴部と前記小穴部との間の縁部に位置決め用の突起が形成されていることを特徴とする。
【００１２】
請求項４に係る発明は、請求項１記載の筐体において、前記爪は、前記係止片と対向する底部に面取り部を形成し、前記係止片は、前記第一筐体部と前記第二筐体部との組付時に前記爪の前記面取り部を滑動させるテーパまたは傾斜面を前記大穴部の縁部に形成していることを特徴とする。
請求項５に係る発明は、四角形状の基板の３辺に同じ高さの壁体を立設するとともに、前記壁体にそれぞれ２つの爪受けを設けて成る第一筐体部と、この第一筐体部と同様に四角形状の基板の３辺に同じ高さの壁体を立設し、前記壁体に前記爪受けと対向する位置に該爪受けと係合する爪を立設して成る第二筐体部と、板状の係止部材とを備え、前記第一筐体部と前記第二筐体部とは、両者の前記壁体同士を重ね合わせて押圧することによって前記第一筐体部の爪受けに前記第二筐体部の爪を嵌入させて前記爪受けを前記爪に填り込ませて一体化されるとともに一側に開口部を形成し、前記係止部材は、前記第一筐体部と前記第二筐体部とを前記爪と前記爪受けとを係合して成る組付後に一側に形成される開口部の開口側から該開口部内に嵌入され前記爪と前記爪受けとを密に係合させるように構成されたことを特徴とする。
【００１３】
請求項６に係る発明は、請求項５記載の筐体において、前記爪のうち、対向するそれぞれ２つの爪は、前記第一筐体部の基板に近い位置に形成されていることを特徴とする。
請求項７に係る発明は、請求項５記載の筐体において、前記爪のうち、対向するそれぞれ２つの爪には、それぞれ前記開口部側に前記爪受けを係止するストッパーが形成されていることを特徴とする。
【００１４】
請求項８に係る発明は、請求項５記載の筐体において、前記爪受けは、対向する壁体に向かって突出する突起から成ることを特徴とする。
請求項９に係る発明は、請求項５記載の筐体において、前記爪は、各壁体の外側に向かって突出していることを特徴とする。
請求項１０に係る発明は、請求項５記載の筐体において、前記爪受けのうち、対向するそれぞれ２つの爪受けは、前記爪と対向する底部に面取り部を形成し、前記爪受けと係合する前記爪は、前記第一筐体部と前記第二筐体部との組付時に前記爪受けの前記面取り部を滑動させるテーパまたは傾斜面を頭部に形成していることを特徴とする。
【００１５】
請求項１１に係る発明は、請求項５記載の筐体において、前記係止部材は、前記開口部の高さと同等の高さを有し、前記開口部より嵌入されることによって前記爪と前記爪受けとを密に係合させることを特徴とする。
請求項１２に係る発明は、請求項５記載の筐体において、前記係止部材は、前記開口部より挿入される内部実装品によって前記爪と前記爪受けとに密着される
ことを特徴とする。
【００１６】
請求項１３に係る発明は、四角形状の基板と、この基板の３辺に立設した壁体と、各壁体にそれぞれ２つ宛設けた爪受けと、各爪受けのうち対向する４つの爪受けにそれぞれ前記壁体のない１辺側に設けたストッパーと、前記基板に前記４つの爪受けとそれぞれ対向する位置にそれぞれ設けた一対の位置決め突起とを備えた第一筐体部と、四角形状の基板と、この基板の３辺に立設した壁体と、この壁体にそれぞれ２つ宛設けた爪と、この爪のうち対向する４つの爪にそれぞれ前記壁体のない１辺側に設けたストッパーと、前記基板に前記４つの爪とそれぞれ対向する位置にそれぞれ設けた一対の位置決め突起とを備えた第二筐体部と、基部と、側部に係止突起を設け、前記基部の両側に平行して設けられるとともに、該基部側に撓むことができる一対の係止片とを有する板状の係止部材とを備え、前記第一筐体部と前記第二筐体部とは、両者の前記壁体同士を当接して一側に開口部を形成し、前記係止部材は、前記第一筐体部と前記第二筐体部との組付時に前記開口部側から前記係止片同士を近接して前記ストッパーに当接するまで嵌入され前記係止片の係止突起を前記一対の位置決め突起間に位置させるとともに前記係止片を該一対の位置決め突起に当接し前記爪と前記爪受けとを密に係合させるように構成されたことを特徴とする。
【００１７】
請求項１４に係る発明は、請求項１３記載の筐体において、前記第一筐体部は、前記一対の位置決め突起と同等の高さを有し前記１辺側の縁部にストッパーを設け、前記第二筐体部は、前記一対の位置決め突起と同等の高さを有し前記１辺側の縁部にストッパーを設け、前記第一筐体部のストッパーと、前記第二筐体部のストッパーは、前記係止部材の脱落を防止部を構成することを特徴とする。
【００１８】
【発明の実施の形態】
以下、本発明を図面に示す実施形態に基づいて説明する。
図１〜図１１は、本発明の第一実施形態に係る筐体３０を示す（請求項１〜３に対応）。
アッパーカバー（第一筐体部）３３は、四角形状の基板３４の３辺に壁体３５ａ，３５ｂ，３５ｃを立設するとともに、対向する壁体３５ａ，３５ｃにそれぞれ２つの爪３６，３６を立設したモールド品で構成されている。
【００１９】
ここで、爪３６は、対向する壁体３５ａ，３５ｃに向かって突出している。また、爪３６の長さは、後述するように、アッパーカバー３３とロアカバー（第二筐体部）４０との組付時にロアカバー４０に設けた穴４３の係止片４６に係止できる長さとされる。
また、爪３６は、係止片４６の頭部４６ａに形成されたテーパまたは傾斜面を滑動する面取り部３６ａが底面に形成されている。
【００２０】
ロアカバー４０は、アッパーカバー３３と同様に四角形状の基板４１の３辺に壁体４２ａ，４２ｂ，４２ｃを立設し、爪３６と対向する位置に爪３６をそれぞれ嵌入させるとともに係止する係止片４６を備えた穴４３を設けたモールド品で構成されている。
穴４３は、爪３６と係止部材４８とを嵌入させる四角形状の大穴部４４と、この大穴部４４に連接し爪３６の嵌入時に係止部材４７を待避させる四角形状の小穴部４５とを形成している。また、大穴部４４と小穴部４５とに連接する縁部４３ａには、位置決め用の突起４７が形成されている。
【００２１】
また、係止片４６の頭部には、爪３６の面取り部３６ａを滑動させるテーパまたは傾斜面４６ａが形成されている。
係止部材４８は、断面コ字状を為すモールド品で構成されている。係止部材４８は、ロアカバー４０の穴４３の縁部４３ａに取り付けられ、穴４３に嵌入される爪３６を穴４３に係止するロック部位である。係止部材４８の幅は、穴４３の大穴部４４の端部と位置決め用の突起４７との距離と、穴４３の小穴部４５の端部と位置決め用の突起４７との距離と同等になっている。
【００２２】
次に、本実施形態に係る筐体３０の組立を説明する。
先ず、図４，図５に示すように、アッパーカバー３３とロアカバー４０との組付前に、ロアカバー４０の４つの穴４３に対して、４つの係止部材４８を、それぞれ大穴部４４の縁部４３ａを跨いで取り付ける。
その後、図６に示すように、各係止部材４８を縁部４３ａ上を摺動させながら小穴部４５に移動させる。係止部材４８が小穴部４５に移動すると、係止部材４８と小穴部４５の隙間が無くなり、係止部材４８は脱落しない。
【００２３】
次に、図１に示すように、アッパーカバー３３とロアカバー４０とを、両者の３５，４２同士が対向するように配置する。
次に、アッパーカバー３３とロアカバー４０とを近づけると、図７（ａ）に示すように、爪３６が穴４３内に嵌入しようとする。この際、爪３６の面取り部３６ａが係止片４６の頭部の斜面面４６ａに沿って外方に撓みながら移動し、爪３６が頭部４６ａを通過すると、図７（ｂ）、図８に示すように、爪３６は復元力で係止片４６に填り込む。
【００２４】
次に、図９、図１０に示すように、係止部材４８を大穴部４４側へ移動する。これにより、爪３６は係止部材４８に密着され、移動することができなくなる。
斯くして、本実施形態に係るネジを用いない筐体３０を得ることができる。この筐体３０内には、図１１に示すように、内部実装品（例えば、ＭＯ、ＣＤ、ＣＤＲ、ＣＤＲＷ、ＤＶＤなどの小型電子部品）３２が挿入されている。
【００２５】
本実施形態によれば、爪３６が穴４３の大穴部４４内に固定されるとともに、係止部材４８が位置決め用の突起４７によって移動を阻止されるので、筐体３０が落下などの衝撃を受けても、爪３６が大穴部４４から外れることがない。
また、係止部材４８は、事前に穴４３に取り付けておけるので、アッパーカバー３３とロアカバー４０との組付時には、係止部材４８を穴４３に取り付ける作業を省略することができる。
【００２６】
しかも、係止部材４８の幅は、穴４３の大穴部４４の端部と位置決め用の突起４７との距離と、穴４３の小穴部４５の端部と位置決め用の突起４７との距離と同等になっているので、組付時にロアカバー４０を傾けても穴４３から落下するおそれがない。
また、係止部材４８が、爪３６の嵌入時に小穴部４５へ移動できるので、爪嵌入作業の妨げとなることがない。
【００２７】
なお、筐体３０を分解するときには、係止部材４８を図８に示す位置に移動した後、爪３６を大穴部４４から抜き取ればよい。
図１２〜図２０は、本発明の第二実施形態に係る筐体５０を示す（請求項５〜１２に対応する）。
アッパーカバー（第一筐体部）５３は、四角形状の基板５４の３辺に壁体５５ａ，５５ｂ，５５ｃを立設するとともに、対向する壁体５５ａ，５５ｃにそれぞれ２つの爪受け５６，５６を設け、かつ残りの壁体５５ｂに２つの爪受け５７，５７を設けたモールド品で構成されている。
【００２８】
ここで、爪受け５６は、アッパーカバー５３の内側に向かって突出している。
対向する壁体５５ａ，５５ｃに設けたそれぞれ２つの爪受け５６，５６は、図１３に示すように、壁体５５ａ，５５ｂ，５５ｃが設けられていない端部（筐体５０の開口部５１）側に爪６３を係止するストッパー５８が連接されている。
また、爪受け５６は、爪６３と対向する底部に面取り部５６ａを形成している。
【００２９】
爪受け５７は、図１４に示すように、ストッパーは設けられていない。
ロアカバー６０は、アッパーカバー５３と同様に四角形状の基板６１の３辺に壁体６２ａ，６２ｂ，６２ｃを立設し、爪受け５６と対向する位置に爪受け５６にそれぞれ嵌入される爪６３を設け、かつ残りの壁体６２ｂに設けた爪受け５７を嵌入させる爪６４を設けたモールド品で構成されている。
【００３０】
爪６３，６４は、各壁体６２ａ，６２ｂ，６２ｃの外側に向かって突出している。
対向する壁体６２ａ，６２ｃにそれぞれ設けた爪６３は、図１５に示すように、アッパーカバー５３とロアカバー６０との組付時に爪受け５６の面取り部５６ａを滑動させるテーパまたは傾斜面を頭部６３ａに形成している。
【００３１】
爪６４は、図１６に示すように、頭部にはテーパも傾斜面も形成されていない。
係止部材６５は、アッパーカバー５３とロアカバー６０とを爪６３と爪受け５６とを係合した後に一側に形成される開口部５１から嵌入される板状の部材である。
【００３２】
次に、本実施形態に係る筐体５０の組立を説明する。
先ず、図１２に示すように、アッパーカバー５３とロアカバー６０との組付前に、ロアカバー６０にロアカバー６０より少し幅が狭い内部実装品（例えば、ＭＯ、ＣＤ、ＣＤＲ、ＣＤＲＷ、ＤＶＤなどの小型電子部品）５２を載置する。
次に、アッパーカバー５３の壁部５５ｂの一側に設けた爪５７，５７を、ロアカバー６０の側壁６２ｂの一側に設けた爪受け６４，６４に嵌入させる。
【００３３】
次に、アッパーカバー５３をロアカバー６０に押し付ける。この際、爪受け６３の頭部６３ａの斜面が爪５６の面取り部５６ａに沿って内方に撓みながら移動し、爪５６が頭部６３ａを通過すると、図１７に示すように、爪受け６３は復元力で爪５６に填り込む。
次に、内部実装品５２の両側と爪受け６３との隙間６６，６６にそれぞれ係止部材６５を挿入する。この時点で、爪受け６３の移動スペースが無くなる。
【００３４】
斯くして構成された本実施形態に係る筐体５０も第一実施形態に係る筐体３０と同様の作用効果を奏することが可能となる。
特に、本実施形態に係る筐体５０では、内部実装品５２と爪受け６３との間に形成される２つの隙間６６に係止部材６５を挿入するので、ネジなしでも容易に分解しない筐体５０を得ることができる。
【００３５】
また、爪受け５６に開口部５１側にストッパー５８を設けたので、アッパーカバー５３が開口部５１の反対側へ移動する外力を受けても、ストッパー５８が爪６３の動きを阻止し、アッパーカバー５３のずれを防止することが可能となる。なお、アッパーカバー５３は、爪６４と爪受け５７との係合により、開口部５１側への移動は阻止されている。
【００３６】
なお、本実施形態では、図１７に示すように、係止部材６５を筐体５０の内側の高さと同等にすると、爪６３と爪受け５６とを密に係合させることが可能である。この場合には、内部実装品５２の大きさに拘わらず爪６３と爪受け５６とを密に係合させることが可能である。
また、第二実施形態に係る筐体５０において、爪６３と爪受け５６との位置関係を図１９，図２０に示すように変更することも可能である。
【００３７】
アッパーカバー５３の対向する爪受け５６を、基板５４側に近づけると、衝撃による変形量が少なくなり、爪受け５６は爪６３より外れなくなり、衝撃に強くなる。
図２１〜図２６は、本発明の第三実施形態に係る筐体７０を示す（請求項１３，１４に対応する）。
【００３８】
アッパーカバー（第一筐体部）７３は、四角形状の基板７４の３辺に壁体７５ａ，７５ｂ，７５ｃを立設するとともに、対向する壁体７５ａ，７５ｃにそれぞれ２つの爪受け７６，７６を設け、かつ残りの壁体７５ｂに２つの爪受け７７，７７を設けたモールド品で構成されている。
ここで、アッパーカバー７３には、２つの爪受け７７，７７を設けた壁体７５ｂと対向する１辺に、壁体７５ｂより突出量の少ない壁体から成るストッパー７５ｄが同様に立設されている。
【００３９】
また、爪受け７６は、アッパーカバー７３の内側に向かって突出している。
また、対向する壁体７５ａ，７５ｃに設けたそれぞれ２つの爪受け７６，７６は、図２２に示すように、壁体７５が設けられていない端部（筐体７０の開口部７１）側に爪８３を係止するストッパー７８が連接されている。
また、爪受け７６と対向する位置の基板７４に、上述のストッパー７５ｄと同等の突出量の一対の位置決め突起７９，７９が立設されている。
【００４０】
また、爪受け７６は、爪８３と対向する底部に面取り部７６ａを形成している。
爪受け７７には、ストッパーは設けられていない（第二実施形態における爪受け５７と同様である）。
ロアカバー８０は、アッパーカバー８３と同様に四角形状の基板８１の３辺に壁体８２ａ，８２ｂ，８２ｃを立設し、爪受け７６と対向する位置に爪受け７６にそれぞれ嵌入される爪８３，８３を設け、かつ残りの壁体８２ｂに設けた爪受け７７を嵌入させる爪８４，８４を設けたモールド品で構成されている。
【００４１】
ここで、ロアカバー８０には、２つの爪８４，８４を設けた壁体８２ｂと対向する１辺に、壁体８２より突出量の少ない壁体から成るストッパー８２ｄが同様に立設されている。
また、爪８３，８４は、各壁体８２ａ，８２ｂ，８２ｃの外側に向かって突出している。
【００４２】
また、対向する壁体８２ａ，８２ｃに設けたそれぞれ２つの爪８３，８３は、図２３に示すように、壁体８２ｂ側に係止部材８６を係止するストッパー８５が連接されている。
また、爪受け７６と対向する位置の基板８１に、上述のストッパー８２ｄと同等の突出量の一対の位置決め突起８６，８６が立設されている。
【００４３】
また、対向する壁体８２ａ，８２ｃにそれぞれ設けた爪８３は、図２３に示すように、アッパーカバー７３とロアカバー８０との組付時に爪受け７６の面取り部７６ａを滑動させるテーパまたは傾斜面を頭部８３ａに形成している。
爪８４は、頭部にはテーパも傾斜面も形成されていない（第二実施形態における爪６４と同様である）。
【００４４】
係止部材８７は、樹脂製の板材から成り、基部８８と、側部に係止突起９０を設け、係止突起９０の端部８８ａ側は傾斜を設け、対面は傾斜がない基部８８の両側に連結部９１を介して平行して設けられるとともに、基部８８側に撓むことができる一対の係止片８９とを有する。
基部８８と係止片８９との間には、係止片８９が基部８８側へ撓むことができるように所定の長さの連結部９１が設けてある。そのため、基部８８と係止片８９との間には所定の間隔を隔てた空間９２が形成され、連結部９１と係止片８９の付け根部とに係止片８９を基部８８側へ折り曲げた際にバネ部となりうる機能を付与することができる。また、係止片８９が曲がりすぎても、基部８８へ当たり、係止片８８が折れるおそれを防止している。
【００４５】
次に、本実施形態に係る筐体７０の組立を説明する。
先ず、図２１に示すように、アッパーカバー７３とロアカバー８０との組付前に、ロアカバー８０にロアカバー８０より少し幅が狭い内部実装品（例えば、ＭＯ、ＣＤ、ＣＤＲ、ＣＤＲＷ、ＤＶＤなどの小型電子部品）７２を載置する。
次に、アッパーカバー７３の壁部７５ｂの一側に設けた爪受け７７，７７を、ロアカバー８０の側壁８２ｂの一側に設けた爪８４，８４に嵌入させる。
【００４６】
次に、アッパーカバー７３をロアカバー８０に押し付ける。この際、爪８３の頭部８３ａが爪受け７６の面取り部７６ａの斜面に沿って内方に撓みながら移動し、爪受け７６が頭部８３ａを通過すると、図２５に示すように、爪８３は復元力で爪受け７６に填り込む。
次に、内部実装品７２と爪受け７６、爪８３との隙間９３，９３に、係止部材８７の端部８８ａの対面を押すことで、係止片８９のバネ性と、係止突起９０の傾斜により、基部８８の端部８８ａがストッパー８５に当接するまで移動させる。この係止部材８７の移動時に、一対の係止片８９に設けた係止突起９０がアッパーカバー７３のストッパー７５ｄおよびロアカバー８０のストッパー８２ｄに当接しても、バネ性で滑り込む。そのため、図２６（ａ）に示すように、アッパーカバー７３の一対の位置決め突起７９，７９の間、およびロアカバー８０の一対の位置決め突起８６，８６の間に、係止突起９０が確実に位置することができる。
【００４７】
斯くして構成された本実施形態に係る筐体７０も第二実施形態に係る筐体５０と同様の作用効果を奏することが可能となる。
特に、本実施形態に係る筐体７０では、係止部材８７の挿入により筐体７０の組立および爪８３と爪受け７６と係合が完成するので、ネジなしでも容易に分解しない筐体７０を得ることができる。
【００４８】
また、衝撃によりアッパーカバー７３が開口部７１方向へ移動する外力を受けて、係止部材８７が開口部７１側へ移動し、一対の係止片８９の係止突起９０が一対の位置決め突起８６を潜り抜けたとしても、アッパーカバー７３およびロアカバー８０にはさらにストッパー７５ｄおよび８２ｄを備えているので、図２６（ｂ）に示すように確実に係止部材８７の移動を阻止することができる。
【００４９】
【発明の効果】
本発明によれば、二分割された筐体部をネジを用いず、爪、爪受けおよび係止部材によって組み付けるので、組立および分解に工具類を必要としない。
また、爪と爪受けによる係合が係止部材によって強固に保持されているので、落下などの衝撃によっても容易に分解しない。
また、ネジおよびネジ止め用の円ボスを必要としないため、デッドスペースが無くなり、小型、軽量の筐体を得ることができる。
【図面の簡単な説明】
【図１】本発明の第一実施形態に係る筐体３０を示す分解図である。
【図２】（ａ）図１の筐体３０における穴４３を示す拡大図である。
（ｂ）（ａ）のＡ−Ａ線断面図である。
（ｃ）（ａ）のＢ−Ｂ線断面図である。
【図３】（ａ）図１の筐体３０における係止部材４８を示す正面図である。
（ｂ）図１の筐体３０における係止部材４８を示す背面図である。
（ｃ）図１の筐体３０における係止部材４８を示す側面図である。
【図４】図１の筐体３０における係止部材４８の最初の取付を示す正面図である。
【図５】図１の筐体３０における係止部材４８の最初の取付を示す断面図である。
【図６】図１の筐体３０における係止部材４８の組立前の取付を示す正面図である。
【図７】図１の筐体３０における爪３６と穴４３の係止片４６との係合関係を示す拡大図である。
【図８】図１の筐体３０における爪３６の嵌入状態を示す正面図である。
【図９】図１の筐体３０における爪３６と係止部材４８との係合状態を示す正面図である。
【図１０】図９のＣ−Ｃ線断面図である。
【図１１】図１の筐体３０を開口部３１側から見た背面の断面図である。
【図１２】本発明の第二実施形態に係る筐体５０を示す分解図である。
【図１３】（ａ）図１２の筐体５０における爪受け５６を示す断面図である。
（ｂ）図１２の筐体５０における爪受け５６を示す側面図である。
【図１４】（ａ）図１２の筐体５０における爪受け５７を示す断面図である。
（ｂ）図１２の筐体５０における爪受け５７を示す側面図である。
【図１５】（ａ）図１２の筐体５０における爪６３を示す断面図である。
（ｂ）図１２の筐体５０における爪６３を示す側面図である。
【図１６】（ａ）図１２の筐体における爪６４を示す断面図である。
（ｂ）図１２の筐体における爪６４を示す側面図である。
【図１７】図１２の筐体５０を開口部５１側から見た背面図である。
【図１８】図１２の筐体５０における爪６３と爪受け５６との係合状態を示す拡大図である。
【図１９】図１２の筐体５０における爪６３と爪受け５６との係合状態を示す拡大図である。
【図２０】図１２の筐体５０における爪６３と爪受け５６との係合状態を示す拡大図である。
【図２１】本発明の第三実施形態に係る筐体７０を示す分解図である。
【図２２】（ａ）図２１の筐体７０における爪受け７６を示す断面図である。
（ｂ）図１２の筐体７０における爪受け７６を示す側面図である。
（ｃ）図１２の筐体７０における爪受け７６を示す背面図である。
【図２３】（ａ）図２１の筐体７０における爪８３を示す側面図である。
（ｂ）図２１の筐体７０における爪８３を示す背面図である。
【図２４】図２１における係止部材８７を示す平面図である。
【図２５】図２１の筐体７０を開口部７１側から見た一部切り欠き背面図である。
【図２６】（ａ）図２１の筐体７０における係止部材８７による係止状態を示す拡大図である。
（ｂ）図２１の筐体７０におけるアッパーカバー７３の移動に伴う係止部材８７による係止状態を示す拡大図である。
【図２７】第一従来例の筐体を示す分解図である。
【図２８】図２７の筐体のネジ止めを示す分解図である。
【図２９】第二従来例の筐体を示す分解図である。
【図３０】図２９の筐体の爪と爪受けとを示す拡大図である。
【図３１】第三従来例の筐体を示す分解図である。
【図３２】図３１の筐体の爪と爪受けとを示す拡大図である。
【図３３】（ａ）第一従来例の筐体における問題点を示す断面図である。
（ｂ）（ａ）の底面図である。
【図３４】（ａ）第一従来例の筐体における円ボスを示す断面図である。
（ｂ）（ａ）の底面図である。
【図３５】（ａ）従来のネジ止めによるデッドスペースを示す図である。
（ａ）従来のネジ止めによるデッドスペースを示す図である。
【符号の説明】
３０，５０，７０筐体
３１，５１，７１開口部
３２，５２，７２内部実装品
３３，５３，７３アッパーカバー（第一筐体部）
３４，４１，５４，６１，７４，８１基板
３５ａ，３５ｂ，３５ｃ，４２ａ，４２ｂ，４２ｃ，５５ａ，５５ｂ，５５ｃ，６２ａ，６２ｂ，６２ｃ，７５ａ，７５ｂ，７５ｃ，８２ａ，８２ｂ，８２ｃ
壁体
３６，６３，６４，８３，８４爪
３６ａ爪３６の面取り部
４０，３０，８０ロアカバー（第二筐体部）
４３穴
４３ａ縁部
４４大穴部
４５小穴部
４６係止片
４６ａ係止片４６の頭部
４７位置決め用の突起
４８，６５，８７係止部材
５６ａ爪受け５６の面取り部
５８，７５ｄ，７８，８２ｄ、８５ストッパー
６３ａ爪６３の頭部
６６，９２隙間
７６ａ爪受け７６の面取り部
７９一対の位置決め突起
８３ａ頭部
８８基部
８９係止片
９０係止突起
９１連結部
９２空間[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a housing applied to, for example, a small device.
[0002]
[Prior art]
Conventionally, in this type of small device, from the viewpoint of weight, cost, design, and the like, a resin (mold) housing has been mainstream instead of a sheet metal housing.
Small equipment has a structure that can be disassembled for repair and maintenance purposes. Screws are used for the assembly parts.
27 and 28 show a first conventional example.
The housing 1 includes an upper cover 2 in which wall bodies 4 are erected on three sides of a rectangular substrate 3, and four circular bosses 5 are erected on the substrate 3, and a rectangular substrate in the same manner as the upper cover 2. 7, the wall body 8 is erected on the three sides, the lower cover 6 provided with a seat 9 with a hole for receiving the circular boss 5 on the substrate 7, and the lower boss 6 is screwed into the circular boss 5 via the seat 9 from the lower surface side. It is comprised with the screw 10 made.
[0003]
In this example, the upper cover 2 and the lower cover 6 are fixed by screws 10.
29 and 30 show a second conventional example.
In this example, the circular bosses 5 and 5 and the seats 9 and 9 on the front side or the back side of the housing 1 in the first conventional example are replaced with claws 14 and 14 and claw receptacles 15 and 15.
[0004]
Therefore, as shown in FIG. 30, the upper cover 12 and the lower cover 13 are provided with claws 14 and 14 provided on the front side or the back side (front side in this example) of the case 11 when the case 11 is assembled. The upper cover 12 and the lower cover 13 are fixed by engaging the claw receivers 15 and 15 and screwing them at the remaining two locations in the same manner as the housing 1.
[0005]
31 and 32 show a third conventional example.
In this example, as in the second conventional example, the upper cover 17 and the lower cover 18 are fixed by engaging the claws 19, 19 with the claw receivers 20, 20 and screwing the screws 9 to the circular boss 5. Yes.
In this example, the claws 19 and 19 are longer than in the second conventional example, and the claw receivers 20 and 20 are formed by holes provided in the substrate 21 of the lower cover 18.
[0006]
Accordingly, as shown in FIG. 32, the upper cover 17 and the lower cover 18 are provided with claws 19 and 19 provided on the front side or the back side (the front side in this example) of the case 16 when the case 16 is assembled. The upper cover 17 and the lower cover 18 are fixed by engaging the claw receivers 20 and 20 and screwing them at the remaining two locations in the same manner as the housing 1.
[0007]
[Problems to be solved by the invention]
However, the conventional casings 1, 11, and 16 are fixed by the screws 10, so that there is a problem that the number of assembling steps is large and the cost is increased.
Further, for fixing with the screw 10, the circular boss 5 is required for the mating member (upper cover or lower cover).
However, the circular boss 5 requires a countermeasure against sink marks on the outer appearance of the mold, and is provided on the inner side of the side surface of the casing, so that the outer dimensions are increased.
[0008]
That is, as shown in FIG. 33, since the side surface is sinked, it is necessary to increase the dimension L from the side surface 22 to the circular boss 5 in consideration of this sink as shown in FIG.
Further, in the case of screwing, a space for the screw is required and the external dimensions are also increased. FIG. 35A shows the case of a side screw, and FIG. 36B shows the case of a back screw. In the figure, a hatched area is a dead space.
[0009]
Note that if the housing is configured only by engagement with the claw and the claw holder without the screws, the housing is disassembled due to a drop impact or the like, and cannot be provided as a housing for a small device.
The present invention has been made to solve such conventional problems, and an object of the present invention is to provide a housing that can be configured without using screws and that is not disassembled due to a drop impact or the like.
[0010]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a first housing portion in which wall bodies are erected on three sides of a rectangular substrate, and two claws are erected on each of the opposing wall bodies, Similar to the case portion, a wall body is erected on three sides of a quadrangular substrate, and a hole provided with a locking piece for engaging and locking the claw at a position facing the claw is provided. A second casing part, and a U-shaped locking member attached to the edge of the hole of the second casing part and locking the claw inserted into the hole into the hole, The one housing part and the second housing part form an opening on one side by abutting the wall bodies of the both, and the hole is a rectangular shape into which the claw and the locking member are fitted. A large hole portion and a rectangular small hole portion that is connected to the large hole portion and retracts the locking member when the claw is inserted, and the locking member is formed by the first housing portion. Before assembling with the second casing, it is mounted across the edge of the large hole and is moved to the small hole through the edge, and the first casing and the second casing At the time of assembly with the body part, the engaging piece is inserted into the large hole part and is moved to the large hole part toward the nail that engages the edge of the large hole part, and the nail is pressed against the nail. It is configured to be engaged with the large hole portion.
[0011]
The invention according to claim 2 is the housing according to claim 1, characterized in that the claw protrudes toward the opposing wall body.
According to a third aspect of the present invention, in the housing according to the first aspect, the hole has a positioning projection formed at an edge portion between the large hole portion and the small hole portion.
[0012]
The invention according to claim 4 is the housing according to claim 1, wherein the claw is Locking piece Forming a chamfered portion at the bottom facing the Locking piece Is characterized in that a taper or an inclined surface that slides the chamfered portion of the claw at the time of assembling the first housing portion and the second housing portion is formed at the edge of the large hole portion. .
The invention according to claim 5 is provided on three sides of a rectangular substrate. The same height A first housing part which is provided with a wall body and two claw supports are provided on the wall body, and on the three sides of the rectangular substrate similarly to the first housing part. The same height A wall body is provided, and the wall body is provided with a second housing part formed by standing a claw that engages with the claw receiver at a position facing the claw receiver, and a plate-like locking member, Said 1st housing | casing part and said 2nd housing | casing part are both said wall bodies. By overlapping and pressing, the claw of the second housing part is inserted into the claw receiver of the first housing part, and the claw receiver is inserted into the claw and integrated. An opening is formed on one side, and the locking member is formed on one side after the first casing part and the second casing part are assembled by engaging the claw and the claw receiver. Opening Inside the opening from the opening side Inserted into The claw and the claw holder are closely engaged. It was comprised so that it might be comprised.
[0013]
The invention according to claim 6 is the housing according to claim 5, wherein two of the claws facing each other are Of the first housing It is formed at a position close to the substrate.
According to a seventh aspect of the present invention, in the housing according to the fifth aspect, each of the two claws facing each other of the claws is formed with a stopper for locking the claw receiver on the opening side. It is characterized by that.
[0014]
According to an eighth aspect of the present invention, in the housing according to the fifth aspect, the claw receiver includes a protrusion protruding toward the opposing wall body.
The invention according to claim 9 is the housing according to claim 5, wherein the claw protrudes toward the outside of each wall body.
According to a tenth aspect of the present invention, in the casing according to the fifth aspect, the claw catcher Of each, two opposing nail holders Forming a chamfered portion at the bottom facing the claw, Engage with the claw holder The claw is characterized in that a taper or an inclined surface is formed on the head for sliding the chamfered portion of the claw receiver when the first housing portion and the second housing portion are assembled.
[0015]
According to an eleventh aspect of the present invention, in the housing according to the fifth aspect, the locking member has a height equivalent to a height of the opening portion, and is fitted into the opening portion so that the claw and the It is characterized by closely engaging the nail receiver.
According to a twelfth aspect of the present invention, in the housing of the fifth aspect, the locking member is brought into close contact with the claw and the claw receiver by an internal mounting product inserted from the opening.
It is characterized by that.
[0016]
The invention according to claim 13 is a quadrangular substrate, wall bodies erected on three sides of the substrate, two claw receivers provided on each wall body, and four opposing nail receivers. A first housing part provided with a stopper provided on one side of the nail receiver without the wall body and a pair of positioning projections provided on the substrate at positions facing the four nail receivers, respectively; A quadrangular substrate, a wall standing on three sides of the substrate, claws provided for two each on the wall, and one side without the wall on each of the four opposing claws. A second housing part provided with a stopper provided on the side, and a pair of positioning protrusions provided on the substrate at positions facing the four claws, a base part, and a locking protrusion on the side part, It is provided parallel to both sides of the base, and can be bent toward the base. A plate-like locking member having a pair of locking pieces, and the first housing part and the second housing part are in contact with each other and are opened on one side. The locking member is inserted until the locking pieces come close to each other and come into contact with the stopper from the opening side when the first housing part and the second housing part are assembled. Locking the locking piece Protrusion Is positioned between the pair of positioning protrusions, and the locking piece is brought into contact with the pair of positioning protrusions to closely engage the claw and the claw receiver.
[0017]
The invention according to claim 14 is the casing according to claim 13, wherein the first casing portion has a height equivalent to that of the pair of positioning protrusions, and is formed on an edge portion on the one side. stopper And the second housing portion has a height equivalent to the pair of positioning protrusions and is provided at an edge of the one side. stopper Of the first housing part stopper And the second housing part stopper Is configured to constitute a preventing portion for preventing the locking member from falling off.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
1 to 11 show a housing 30 according to the first embodiment of the present invention (corresponding to claims 1 to 3).
The upper cover (first housing portion) 33 has wall bodies 35a, 35b, and 35c erected on three sides of the rectangular substrate 34, and two claws 36 and 36 on the opposing wall bodies 35a and 35c, respectively. It consists of a standing mold product.
[0019]
Here, the nail | claw 36 protrudes toward the wall bodies 35a and 35c which oppose. The length of the claw 36 is a length that can be locked to a locking piece 46 of a hole 43 provided in the lower cover 40 when the upper cover 33 and the lower cover (second housing part) 40 are assembled, as will be described later. Is done.
In addition, the claw 36 has a chamfered portion 36 a that slides on a tapered or inclined surface formed on the head 46 a of the locking piece 46 on the bottom surface.
[0020]
As with the upper cover 33, the lower cover 40 has wall bodies 42 a, 42 b, 42 c erected on the three sides of the rectangular substrate 41, and engages and locks the claws 36 at positions facing the claws 36. The molded product is provided with a hole 43 provided with a piece 46.
The hole 43 includes a rectangular large hole portion 44 into which the claw 36 and the locking member 48 are fitted, and a rectangular small hole portion 45 that is connected to the large hole portion 44 and retracts the locking member 47 when the claw 36 is fitted. Forming. A positioning projection 47 is formed on the edge 43 a connected to the large hole 44 and the small hole 45.
[0021]
Further, a taper or inclined surface 46 a for sliding the chamfered portion 36 a of the claw 36 is formed at the head of the locking piece 46.
The locking member 48 is a molded product having a U-shaped cross section. The locking member 48 is a lock part that is attached to the edge 43 a of the hole 43 of the lower cover 40 and locks the claw 36 inserted into the hole 43 into the hole 43. The width of the locking member 48 is equal to the distance between the end of the large hole 44 of the hole 43 and the positioning projection 47 and the distance between the end of the small hole 45 of the hole 43 and the positioning projection 47. ing.
[0022]
Next, assembly of the housing 30 according to the present embodiment will be described.
First, as shown in FIGS. 4 and 5, before assembling the upper cover 33 and the lower cover 40, four locking members 48 are respectively attached to the four holes 43 of the lower cover 40 and the edges of the large holes 44. Attach across the part 43a.
Then, as shown in FIG. 6, each locking member 48 is moved to the small hole portion 45 while sliding on the edge portion 43a. When the locking member 48 moves to the small hole portion 45, there is no gap between the locking member 48 and the small hole portion 45, and the locking member 48 does not fall off.
[0023]
Next, as shown in FIG. 1, the upper cover 33 and the lower cover 40 are arranged so that both 35 and 42 face each other.
Next, when the upper cover 33 and the lower cover 40 are brought close to each other, the claw 36 tries to fit into the hole 43 as shown in FIG. At this time, when the chamfered portion 36a of the claw 36 moves while being bent outward along the inclined surface 46a of the head of the locking piece 46, and the claw 36 passes through the head 46a, FIG. 7 (b) and FIG. As shown, the claw 36 is fitted into the locking piece 46 with a restoring force.
[0024]
Next, as shown in FIGS. 9 and 10, the locking member 48 is moved to the large hole 44 side. As a result, the claw 36 is in close contact with the locking member 48 and cannot move.
Thus, the housing 30 that does not use the screw according to the present embodiment can be obtained. As shown in FIG. 11, an internally mounted product (for example, a small electronic component such as MO, CD, CDR, CDRW, or DVD) 32 is inserted into the housing 30.
[0025]
According to the present embodiment, the claw 36 is fixed in the large hole portion 44 of the hole 43, and the locking member 48 is prevented from moving by the positioning projection 47, so that the housing 30 receives an impact such as dropping. Even if it receives, the nail | claw 36 does not remove | deviate from the large hole part 44. FIG.
Further, since the locking member 48 can be attached to the hole 43 in advance, the work of attaching the locking member 48 to the hole 43 can be omitted when the upper cover 33 and the lower cover 40 are assembled.
[0026]
Moreover, the width of the locking member 48 is equal to the distance between the end portion of the large hole portion 44 of the hole 43 and the positioning projection 47 and the distance between the end portion of the small hole portion 45 of the hole 43 and the positioning projection 47. Therefore, there is no possibility of dropping from the hole 43 even if the lower cover 40 is tilted during assembly.
Further, since the locking member 48 can move to the small hole portion 45 when the claw 36 is inserted, the claw insertion operation is not hindered.
[0027]
When the housing 30 is disassembled, the claw 36 may be extracted from the large hole portion 44 after the locking member 48 is moved to the position shown in FIG.
12 to 20 show a housing 50 according to the second embodiment of the present invention (corresponding to claims 5 to 12).
The upper cover (first housing portion) 53 has wall bodies 55a, 55b, and 55c provided upright on three sides of the rectangular substrate 54, and two claw supports 56 and 56 on the opposing wall bodies 55a and 55c, respectively. And a mold product in which two claw receptacles 57, 57 are provided on the remaining wall 55b.
[0028]
Here, the claw receptacle 56 protrudes toward the inside of the upper cover 53.
As shown in FIG. 13, the two claw receptacles 56, 56 provided on the opposing wall bodies 55a, 55c are end portions where the wall bodies 55a, 55b, 55c are not provided (opening 51 of the housing 50). A stopper 58 for locking the claw 63 is connected to the side.
Further, the claw receiver 56 forms a chamfered portion 56 a at the bottom portion facing the claw 63.
[0029]
As shown in FIG. 14, the claw receiver 57 is not provided with a stopper.
As with the upper cover 53, the lower cover 60 has wall bodies 62 a, 62 b, and 62 c erected on three sides of the rectangular substrate 61, and claw 63 inserted into the claw receiver 56 at positions facing the claw receiver 56. The molded product is provided with a claw 64 that is provided and into which the claw receiver 57 provided on the remaining wall body 62b is fitted.
[0030]
The claws 63 and 64 protrude toward the outside of the wall bodies 62a, 62b and 62c.
As shown in FIG. 15, the claw 63 provided on each of the opposing wall bodies 62a and 62c has a taper or inclined surface that slides the chamfered portion 56a of the claw receiver 56 when the upper cover 53 and the lower cover 60 are assembled. 63a.
[0031]
As shown in FIG. 16, the claw 64 has neither a taper nor an inclined surface at the head.
The locking member 65 is a plate-like member that is fitted through the opening 51 formed on one side after the upper cover 53 and the lower cover 60 are engaged with the claw 63 and the claw receiver 56.
[0032]
Next, assembly of the housing 50 according to the present embodiment will be described.
First, as shown in FIG. 12, before the upper cover 53 and the lower cover 60 are assembled, the lower cover 60 has a slightly smaller width than the lower cover 60 (for example, small-sized products such as MO, CD, CDR, CDRW, and DVD). Electronic component) 52 is placed.
Next, the claws 57, 57 provided on one side of the wall portion 55 b of the upper cover 53 are fitted into the claw receptacles 64, 64 provided on one side of the side wall 62 b of the lower cover 60.
[0033]
Next, the upper cover 53 is pressed against the lower cover 60. At this time, when the inclined surface of the head portion 63a of the claw receiver 63 moves while bending inward along the chamfered portion 56a of the claw 56 and the claw 56 passes through the head portion 63a, as shown in FIG. Is inserted into the nail 56 with the restoring force.
Next, the locking members 65 are inserted into the gaps 66 between the both sides of the internally mounted product 52 and the claw receiver 63, respectively. At this point, there is no space for moving the claw receiver 63.
[0034]
The casing 50 according to the present embodiment configured as described above can also exhibit the same operational effects as the casing 30 according to the first embodiment.
In particular, in the case 50 according to the present embodiment, since the locking member 65 is inserted into the two gaps 66 formed between the internal mounted product 52 and the claw receiver 63, the case is not easily disassembled without screws. 50 can be obtained.
[0035]
Further, since the stopper 58 is provided on the claw support 56 on the opening 51 side, even if the upper cover 53 receives an external force that moves to the opposite side of the opening 51, the stopper 58 prevents the claw 63 from moving. 53 can be prevented from shifting. The upper cover 53 is prevented from moving toward the opening 51 due to the engagement between the claw 64 and the claw receiver 57.
[0036]
In this embodiment, As shown in FIG. Locking member 65 The housing 50 inside When the height is equal, the claws 63 and the claw receiver 56 can be closely engaged. In this case, it is possible to closely engage the claw 63 and the claw receiver 56 regardless of the size of the internal mounted product 52.
Further, in the housing 50 according to the second embodiment, the positional relationship between the claw 63 and the claw receiver 56 can be changed as shown in FIGS.
[0037]
When the opposing claw receptacle 56 of the upper cover 53 is brought closer to the substrate 54 side, the amount of deformation due to the impact is reduced, and the claw receptacle 56 is not detached from the claw 63 and becomes stronger against the impact.
21 to 26 show a housing 70 according to a third embodiment of the present invention (corresponding to claims 13 and 14).
[0038]
The upper cover (first housing portion) 73 has wall bodies 75a, 75b, and 75c standing on three sides of a rectangular substrate 74, and two claw supports 76 and 76 on the opposing wall bodies 75a and 75c, respectively. And a mold product in which two claw receptacles 77 and 77 are provided on the remaining wall body 75b.
Here, on the upper cover 73, a stopper 75d made of a wall body having a smaller protruding amount than the wall body 75b is similarly provided upright on one side facing the wall body 75b provided with the two claw receptacles 77, 77. Yes.
[0039]
The claw receptacle 76 protrudes toward the inside of the upper cover 73.
Further, as shown in FIG. 22, the two claw receptacles 76, 76 provided on the opposing wall bodies 75 a, 75 c are arranged on the end (opening 71 of the housing 70) side where the wall body 75 is not provided. A stopper 78 for locking the claw 83 is connected.
In addition, a pair of positioning projections 79 and 79 having a protruding amount equivalent to the above-described stopper 75d are provided upright on the substrate 74 at a position facing the claw receiver 76.
[0040]
Further, the claw receiver 76 forms a chamfered portion 76 a at the bottom portion facing the claw 83.
The claw receiver 77 is not provided with a stopper (similar to the claw receiver 57 in the second embodiment).
As with the upper cover 83, the lower cover 80 has wall bodies 82a, 82b, and 82c provided upright on three sides of the rectangular substrate 81, and the claws 83, 83, and a molded product provided with claws 84 and 84 into which the claw receptacles 77 provided on the remaining wall 82b are fitted.
[0041]
Here, on the lower cover 80, a stopper 82d made of a wall body having a smaller amount of protrusion than the wall body 82 is similarly erected on one side facing the wall body 82b provided with the two claws 84 and 84.
The claws 83 and 84 protrude toward the outside of the wall bodies 82a, 82b, and 82c.
[0042]
Further, as shown in FIG. 23, each of the two claws 83, 83 provided on the opposing wall bodies 82a, 82c is connected to a stopper 85 for locking the locking member 86 on the wall body 82b side.
In addition, a pair of positioning projections 86 and 86 having a protruding amount equivalent to the above-described stopper 82d are provided upright on the substrate 81 at a position facing the claw receiver 76.
[0043]
Further, as shown in FIG. 23, the claw 83 provided on each of the opposing wall bodies 82a and 82c has a taper or an inclined surface that slides the chamfered portion 76a of the claw receptacle 76 when the upper cover 73 and the lower cover 80 are assembled. It is formed on the head 83a.
The claw 84 has neither a taper nor an inclined surface on the head (similar to the claw 64 in the second embodiment).
[0044]
The locking member 87 is made of a resin plate, and is provided with a base 88 and a locking projection 90 on the side, an end 88a side of the locking projection 90 is inclined, and the opposite sides of the base 88 are not inclined. And a pair of locking pieces 89 that can be bent toward the base portion 88 side.
A connecting portion 91 having a predetermined length is provided between the base 88 and the locking piece 89 so that the locking piece 89 can bend toward the base 88 side. Therefore, a space 92 with a predetermined interval is formed between the base 88 and the locking piece 89, and the locking piece 89 is bent to the base 88 side at the connecting portion 91 and the base of the locking piece 89. The function which can become a spring part at the time can be provided. Further, even if the locking piece 89 is bent too much, the locking piece 88 is prevented from being broken by hitting the base 88.
[0045]
Next, assembly of the housing 70 according to the present embodiment will be described.
First, as shown in FIG. 21, before assembling the upper cover 73 and the lower cover 80, an inner mounted product (for example, a small size such as MO, CD, CDR, CDRW, DVD, etc.) that is slightly narrower than the lower cover 80. Electronic component) 72 is placed.
Next, the claw receptacles 77, 77 provided on one side of the wall portion 75 b of the upper cover 73 are fitted into the claws 84, 84 provided on one side of the side wall 82 b of the lower cover 80.
[0046]
Next, the upper cover 73 is pressed against the lower cover 80. At this time, when the head 83a of the claw 83 moves while being bent inward along the inclined surface of the chamfered portion 76a of the claw receiver 76 and the claw receiver 76 passes through the head 83a, as shown in FIG. Is inserted into the nail support 76 with a restoring force.
Next, the spring property of the locking piece 89 and the locking protrusion 90 are pressed by pushing the opposite face of the end 88 a of the locking member 87 into the gaps 93, 93 between the internal mounting product 72 and the claw receiver 76 and claw 83. With the inclination, the base 88 is moved until the end 88a of the base 88 abuts against the stopper 85. Even when the locking protrusions 90 provided on the pair of locking pieces 89 come into contact with the stopper 75d of the upper cover 73 and the stopper 82d of the lower cover 80 during the movement of the locking member 87, the locking member 87 slides with springiness. Therefore, as shown in FIG. 26A, the locking projection 90 is reliably positioned between the pair of positioning projections 79, 79 of the upper cover 73 and between the pair of positioning projections 86, 86 of the lower cover 80. be able to.
[0047]
The casing 70 according to the present embodiment configured as described above can also exhibit the same effects as the casing 50 according to the second embodiment.
In particular, in the housing 70 according to the present embodiment, the assembly of the housing 70 and the engagement between the claw 83 and the claw receiver 76 are completed by inserting the locking member 87. Obtainable.
[0048]
Further, the impact is applied to the upper cover 73 in the direction of the opening 71 due to the impact, the locking member 87 moves toward the opening 71, and the locking protrusions 90 of the pair of locking pieces 89 are paired with the pair of positioning protrusions 86. Even if the cover has passed through, the upper cover 73 and the lower cover 80 are further provided with the stoppers 75d and 82d, so that the movement of the locking member 87 can be reliably prevented as shown in FIG.
[0049]
【The invention's effect】
According to the present invention, since the two-divided housing portion is assembled by the claw, the claw receiver and the locking member without using a screw, no tools are required for assembly and disassembly.
Further, since the engagement between the claw and the claw holder is firmly held by the locking member, it is not easily disassembled even by an impact such as dropping.
Further, since a screw and a circular boss for screwing are not required, there is no dead space, and a small and lightweight casing can be obtained.
[Brief description of the drawings]
FIG. 1 is an exploded view showing a housing 30 according to a first embodiment of the present invention.
2A is an enlarged view showing a hole 43 in the housing 30 of FIG.
(B) It is the sectional view on the AA line of (a).
(C) It is BB sectional drawing of (a).
3A is a front view showing a locking member 48 in the housing 30 of FIG. 1; FIG.
(B) It is a rear view which shows the latching member 48 in the housing | casing 30 of FIG.
(C) It is a side view which shows the latching member 48 in the housing | casing 30 of FIG.
4 is a front view showing the initial attachment of the locking member 48 in the housing 30 of FIG. 1. FIG.
5 is a cross-sectional view showing the initial attachment of the locking member 48 in the housing 30 of FIG. 1. FIG.
6 is a front view showing attachment of the locking member 48 in the housing 30 of FIG. 1 before assembly. FIG.
7 is an enlarged view showing an engagement relationship between a claw 36 and a locking piece 46 of a hole 43 in the housing 30 of FIG.
8 is a front view showing a state in which a claw 36 is fitted in the housing 30 of FIG. 1. FIG.
9 is a front view showing an engagement state between a claw 36 and a locking member 48 in the housing 30 of FIG. 1. FIG.
10 is a cross-sectional view taken along the line CC of FIG.
11 is a cross-sectional view of the rear surface of the housing 30 of FIG. 1 viewed from the opening 31 side.
FIG. 12 is an exploded view showing a housing 50 according to the second embodiment of the present invention.
13A is a cross-sectional view showing a claw receiver 56 in the housing 50 of FIG.
(B) It is a side view which shows the nail | claw receptacle 56 in the housing | casing 50 of FIG.
14 (a) is a cross-sectional view showing a claw receiver 57 in the housing 50 of FIG.
(B) It is a side view which shows the nail | claw receptacle 57 in the housing | casing 50 of FIG.
15A is a cross-sectional view showing a claw 63 in the housing 50 of FIG.
(B) It is a side view which shows the nail | claw 63 in the housing | casing 50 of FIG.
16A is a cross-sectional view showing a claw 64 in the housing of FIG.
(B) It is a side view which shows the nail | claw 64 in the housing | casing of FIG.
17 is a rear view of the housing 50 of FIG. 12 as viewed from the opening 51 side.
18 is an enlarged view showing an engagement state between a claw 63 and a claw receiver 56 in the housing 50 of FIG.
19 is an enlarged view showing an engagement state between a claw 63 and a claw receiver 56 in the housing 50 of FIG.
20 is an enlarged view showing an engagement state between a claw 63 and a claw receiver 56 in the housing 50 of FIG.
FIG. 21 is an exploded view showing a housing 70 according to the third embodiment of the present invention.
22A is a cross-sectional view showing a claw receiver 76 in the casing 70 of FIG.
(B) It is a side view which shows the nail | claw receptacle 76 in the housing | casing 70 of FIG.
(C) It is a rear view which shows the nail | claw receptacle 76 in the housing | casing 70 of FIG.
23 (a) is a side view showing a claw 83 in the housing 70 of FIG. 21. FIG.
(B) It is a rear view which shows the nail | claw 83 in the housing | casing 70 of FIG.
24 is a plan view showing a locking member 87 in FIG. 21. FIG.
25 is a partially cutaway rear view of the housing 70 of FIG. 21 as viewed from the opening 71 side.
26 (a) is an enlarged view showing a locked state by a locking member 87 in the housing 70 of FIG.
(B) It is an enlarged view which shows the latching state by the latching member 87 accompanying the movement of the upper cover 73 in the housing | casing 70 of FIG.
FIG. 27 is an exploded view showing a casing of a first conventional example.
28 is an exploded view showing screwing of the housing of FIG. 27. FIG.
FIG. 29 is an exploded view showing a casing of a second conventional example.
30 is an enlarged view showing a claw and a claw receiver of the housing of FIG. 29. FIG.
FIG. 31 is an exploded view showing a casing of a third conventional example.
32 is an enlarged view showing a claw and a claw receiver of the housing of FIG. 31. FIG.
FIG. 33 (a) is a cross-sectional view showing a problem in the casing of the first conventional example.
(B) It is a bottom view of (a).
FIG. 34 (a) is a cross-sectional view showing a circular boss in the casing of the first conventional example.
(B) It is a bottom view of (a).
FIG. 35A is a diagram showing a dead space by conventional screwing.
(A) It is a figure which shows the dead space by the conventional screwing.
[Explanation of symbols]
30, 50, 70 housing
31, 51, 71 opening
32, 52, 72 Internally mounted product
33, 53, 73 Upper cover (first housing)
34, 41, 54, 61, 74, 81 Substrate
35a, 35b, 35c, 42a, 42b, 42c, 55a, 55b, 55c, 62a, 62b, 62c, 75a, 75b, 75c, 82a, 82b, 82c
Wall
36, 63, 64, 83, 84 nails
36a Chamfered portion of the nail 36
40, 30, 80 Lower cover (second casing)
43 holes
43a Edge
44 Large hole
45 Small hole
46 Locking piece
46a Head of the locking piece 46
47 Protrusions for positioning
48, 65, 87 Locking member
56a Chamfered portion of the nail support 56
58, 75d, 78, 82d, 85 stopper
63a claw 63 head
66,92 clearance
76a Chamfered portion of nail support 76
79 A pair of positioning protrusions
83a head
88 base
89 Locking piece
90 Locking protrusion
91 Connecting part
92 space

Claims

A first housing portion that is constructed by erecting wall bodies on three sides of a quadrangular substrate and erecting two claws on each of the opposing wall bodies;
As with the first casing, wall bodies are erected on the three sides of the rectangular substrate, and holes are provided with locking pieces for engaging and locking the claws respectively at positions facing the claws. A second housing part comprising:
An engagement member attached to the edge of the hole of the second housing part and having a U-shaped cross section for engaging the claw inserted into the hole with the hole;
The first housing part and the second housing part are in contact with each other and form an opening on one side,
The hole forms a rectangular large hole portion into which the claw and the locking member are fitted, and a rectangular small hole portion that is connected to the large hole portion and retracts the locking member when the claw is fitted,
The locking member is attached to straddle the edge of the large hole portion before the first housing portion and the second housing portion are assembled, and is moved to the small hole portion via the edge portion. And when the first housing portion and the second housing portion are assembled, the large hole portion is inserted into the large hole portion and is engaged with the claw that engages the locking piece with the edge portion of the large hole portion. A housing configured to be moved and press-contacted with the claw to lock the claw into the large hole portion.

The housing of claim 1,
The said nail | claw protrudes toward the opposing wall body. The housing | casing characterized by the above-mentioned.

The housing of claim 1,
The casing is characterized in that a positioning projection is formed at an edge portion between the large hole portion and the small hole portion.

The housing of claim 1,
The claw forms a chamfered portion on the bottom portion facing the locking piece ,
The locking piece has a taper or an inclined surface that slides the chamfered portion of the claw at the edge of the large hole portion when the first housing portion and the second housing portion are assembled. A housing characterized by.

A first housing portion comprising a wall body of the same height standing on three sides of a rectangular substrate, and two claw supports provided on the wall body;
Similar to the first housing part , wall bodies having the same height are erected on the three sides of the rectangular substrate, and the claws that engage with the claw receivers are erected on the wall body so as to face the claw receivers. A second housing part formed,
A plate-like locking member,
The first casing part and the second casing part are inserted into the claws of the first casing part into the nail receiver of the first casing part by overlapping and pressing the wall bodies of the two. The nail receiver is inserted into the nail and integrated, and an opening is formed on one side,
The locking member is formed from the opening side of the opening formed on one side after the first housing portion and the second housing portion are assembled by engaging the claw and the claw receiver. housing, characterized in that from the opening side of the opening configured to Ru was fitted into the opening portion engaged tightly engaged with said claw receiving said pawl.

The housing of claim 5,
Of the claws, two opposing claws are formed at positions close to the substrate of the first housing part .

The housing of claim 5,
Wherein among the receiving claws, facing the respective two pawls receiving the, housing, characterized in that each stopper for locking the pawl in the opening side.

The housing of claim 5,
The said nail | claw holder consists of the processus | protrusion which protrudes toward the opposing wall body.

The housing of claim 5,
The said nail | claw protrudes toward the outer side of each wall body. The housing | casing characterized by the above-mentioned.

The housing of claim 5,
Each of the two claw supports facing each other among the claw supports forms a chamfered portion at the bottom facing the claw,
The claw that engages with the claw receiver is formed with a taper or an inclined surface on the head that slides the chamfered portion of the claw receiver when the first housing portion and the second housing portion are assembled. A housing characterized by being.

The housing of claim 5,
The locking member has a height equivalent to the height of the opening, and the nail and the nail receiver are closely engaged by being fitted through the opening.

The housing of claim 5,
The housing, wherein the locking member is in close contact with the claw and the claw receptacle by an internal mounting product inserted from the opening.

A quadrangular substrate, wall bodies erected on three sides of the substrate, claw holders provided for each of the wall bodies, and four claw receivers opposed to each of the claw receivers. A first housing portion provided with a stopper provided on one side that is not present, and a pair of positioning protrusions provided on the substrate at positions facing the four claw receptacles, respectively
A quadrangular substrate, a wall standing on three sides of the substrate, claws provided for two each on the wall, and one side without the wall on each of the four opposing claws. A second housing portion provided with a stopper provided on the side, and a pair of positioning protrusions provided on the substrate at positions facing the four claws, respectively.
A plate-shaped locking member having a base and a pair of locking pieces that are provided in parallel on both sides of the base and provided with a locking protrusion on the side, and that can be bent toward the base. ,
The first housing part and the second housing part are in contact with each other and form an opening on one side,
The locking member is inserted until the locking pieces come close to each other and come into contact with the stopper from the opening side when the first housing part and the second housing part are assembled. The locking projection is positioned between the pair of positioning projections, and the locking piece is in contact with the pair of positioning projections so that the claw and the claw receiver are closely engaged. A housing to be used.

The housing of claim 13,
The first housing portion has a height equivalent to the pair of positioning protrusions and is provided with a stopper at an edge on the one side,
The second housing part has a height equivalent to the pair of positioning protrusions and is provided with a stopper at the edge on the one side,
Wherein the stopper of the first housing portion, the stopper of the second housing part includes a casing, characterized in that configuring the preventing portion detachment of the locking member.