JP3097821U

JP3097821U - Fixing device for electrical equipment parts

Info

Publication number: JP3097821U
Application number: JP2003002739U
Authority: JP
Inventors: 宮本　隆史
Original assignee: Funai Electric Co Ltd
Current assignee: Funai Electric Co Ltd
Priority date: 2003-05-15
Filing date: 2003-05-15
Publication date: 2004-02-12
Anticipated expiration: 2009-05-15

Abstract

【目的】ボスが破損されず位置調整が縦横に可能で金型加工費が安くつくようにすること。
【構成】フロントパネル６の裏面に突設した一対のボス１５が円柱状に形成され、該各ボス１５に対向して押釦３の基板１１に形成した各位置決め孔１４の内周面に２つの拡径溝２０を周方向に１８０°の間隔をおいて形成することにより、両拡径溝２０をむすぶ縦断方向ａ，ｂとは直交する横断方向ｃ，ｄにその各位置決め孔１４が拡径可能に形成され、各基板１１の裏面に各位置決め孔１４よりも大径の凹部２１を該各位置決め孔１４と同心状に凹設することにより、その各位置決め孔１４の周縁部１４ａが薄肉状に形成されている。
【選択図】　　　　図４[Purpose] To make it possible to adjust the position vertically and horizontally without damaging the boss and to reduce the mold processing cost.
A pair of bosses protruding from the back surface of the front panel are formed in a columnar shape, and two bosses are formed on the inner peripheral surface of each positioning hole formed in the substrate of the push button so as to face each boss. By forming the enlarged diameter grooves 20 at intervals of 180 ° in the circumferential direction, the respective positioning holes 14 are enlarged in the transverse directions c and d orthogonal to the longitudinal directions a and b connecting both the enlarged diameter grooves 20. By forming a recess 21 having a diameter larger than each positioning hole 14 on the back surface of each substrate 11 concentrically with each positioning hole 14, the peripheral edge 14 a of each positioning hole 14 has a thin wall. Is formed.
[Selection diagram] Fig. 4

Description

【０００１】
【考案の属する技術分野】
本考案は例えばＤＶＤ・ＲＷのディスクプレーヤなどの電気機器に用いられる押釦やレンズなどの部品を固定するための電気機器用部品の固定装置に関する。
【０００２】
【従来の技術】
ＤＶＤ・ＲＷのディスクプレーヤの一例として図９から図１１に示すものがある。これは、ケーシング１内に配置したローディングスイッチ２の前方に設けた合成樹脂製押釦（部品）３と該ケーシング１内に配置した発光ダイオードからなる駆動表示灯４の前方に設けた合成樹脂製レンズ（部品）５とをケーシング１の前面に設けた合成樹脂製フロントパネル６の裏面に固定したものである。なお、図９中、７はボリウムノブ、８はヘッドホーン用ジャック、９はトレイである。
【０００３】
操作手順を説明すると、押釦３を押すことによりローディングスイッチ２を作動させ、その作動信号に基づいてトレイ９をアンローディングさせ（図９仮想線参照）、該トレイ９上にディスク（図示せず）を載置した後、押釦３を押すことによりローディングスイッチ２を作動させ、その作動信号に基づいてトレイ９をローディングさせ（図９実線参照）、該トレイ９上のディスクをターンテーブルにより回転させて光ピックアップによりディスクに記録されている情報を読み取り、そのディスクプレーヤの駆動を駆動表示灯４によりレンズ５を光らせて表示する。
【０００４】
従来、前記押釦３を固定する技術については特許文献１などに記載されており、その一例を図１２から図１５に基づいて説明すると、押釦３に基板１１が一体形成され、該基板１１に略コ字状の切り欠き孔１２を形成することにより、その基板１１と押釦３とをつなぐ部分が弾性変形可能な弾性アーム１３とされ、前記基板１１に所定間隔Ｌをおいて一対の円形位置決め孔１４が貫設され、該各位置決め孔１４に対向してフロントパネル６の裏面に各位置決め孔１４の内径ｆと同一またはわずかに大きい外径Ｆの一対のボス１５が突設され、該各ボス１５にスリット１６を形成することにより、その各ボス１５が２つの小片１５ａに分けられて縮径可能に形成されており、図１５に示す状態から、各ボス１５に各位置決め孔１４を嵌合させることにより〔図１５（ｂ）仮想線参照〕、押釦３をフロントパネル６の押釦孔１７に挿入して、その押釦３の軸心Ｏ１を押釦孔１７の軸心Ｏ２に一致させ、図１３に示すように、ホットプレスＨにより各ボス１５の先端部を溶解させて抜け止め頭部１５Ａを形成することにより、各基板１１をフロントパネル６の裏面に固定させる。
【０００５】
具体的寸法の一例を説明すると、両位置決め孔１４及び両ボス１５間の間隔Ｌが１０ｍｍ、位置決め孔１４の内径ｆ及びボス１５の外径Ｆが２ｍｍ、ボス１５の高さｈが４ｍｍ、スリット１６の幅ｔが０．５ｍｍである。
【０００６】
前記レンズ５は、押釦３と同様の手順で固定されて、レンズ孔１８に同心状に位置決めされており、同一部分に同一符号を付してその説明を省略する（図９及び図１０参照）。
【０００７】
【特許文献１】
特開平９−２８３９４０号公報
【０００８】
【考案が解決しようとする課題】
上記構成では、図１５に示すように、ボス１５の外径Ｆが２ｍｍでその高さｈが４ｍｍ程度であって、その小さいボス１５にスリット１６を挟んで形成した両小片１５ａが薄くてその強度が低いため、ボス１５に位置決め孔１４を位置合わせして嵌合させたときに、両小片１５ａに負荷Ｗがかかって、図１６に示すように、一方の小片１５ａを破損させることがあり、これでは、フロントパネル６が不良品となって廃棄しなければならず、その廃棄率が高くてコストアップになっていた。
【０００９】
また、ボス１５を縮径させて位置決め孔１４に嵌合させる際に、該ボス１５をスリット１６の縦断方向ａ，ｂとは直交する横断方向ｃ，ｄにしか縮径させることができないので、例えば成形誤差によりボス１５が位置決め孔１４に対して縦断方向ａ，ｂに位置ずれした場合には、そのボス１５に対して位置決め孔１４を嵌合せることが困難になる。
【００１０】
そこで、図１５（ｃ）に仮想線で示すように、ボス１５に横断方向ｃ，ｄにもスリット１６を形成することが考えられるが、該ボス１５は極めて小さいため、そのボス１５に十字状のスリット１６を形成することは極めて困難であり、実際上、縦断方向ａ，ｂへの位置ずれに対応することはできない。
【００１１】
また、フロントパネル６の成形金型を製作するにあたって、小さいボス１５に幅ｔが０．５ｍｍ程度の極めて細いスリット１６を形成する必要があるため、その成形金型を精緻に仕上げる必要があり、金型加工費が高くつく。
【００１２】
本考案は、上記難点に鑑み、ボスが破損されず位置調整が縦横に可能で金型加工費が安くつくようにした電気機器用部品の固定装置を提供することを目的としている。
【００１３】
【課題を解決するための手段】
上記目的を達成するため、請求項１に記載の考案は、ディスクプレーヤのケーシング内に配置したローディングスイッチの前方に設けた合成樹脂製押釦と該ケーシング内に配置した駆動表示灯の前方に設けた合成樹脂製レンズとをケーシングの前面に設けた合成樹脂製フロントパネルの裏面に固定するものであって、前記押釦に弾性アームを介して一体形成した基板と前記レンズに一体形成した基板とにそれぞれ所定間隔をおいて一対の位置決め孔が貫設され、該各位置決め孔に対向してフロントパネルの裏面に前記各位置決め孔と同径またはわずかに大径のボスが突設され、該各ボスにスリットを形成することにより、その各ボスが縮径可能に成形されており、前記各ボスに各位置決め孔を嵌合させることにより、前記押釦をフロントパネルの押釦孔に同心状に挿入すると共に、前記レンズをフロントパネルのレンズ孔に同心状に挿入し、ホットプレスにより前記各ボスの先端部を溶解させて抜け止め頭部を形成することにより、前記各基板をフロントパネルの裏面に固定させるようにした電気機器用部品の固定装置において、前記スリット付きボスに代えて円柱状ボスが前記フロントパネルの裏面に突設され、前記各位置決め孔の内周面に２つの拡径溝を周方向に１８０°の間隔をおいて形成することにより、その各位置決め孔が拡径可能に形成され、前記各基板に各位置決め孔よりも大径の凹部を該各位置決め孔と同心状に凹設することにより、その各位置決め孔の周縁部が薄肉状に形成されていることを特徴としている。
【００１４】
上記構成は第１の実施の形態（図１から図４参照）に対応するものであって、これによれば、フロントパネルの裏面に突設したボスが円柱状に形成されて強度大であるため、位置決め孔を拡径させてボスに嵌合させたとき、その嵌合の際の負荷によってボスが破損されることがなくなり、従来問題となっていたスリット付きボスの破損によるフロントパネルの廃棄という難点を解消して、コストアップの一因を除去することができる。
【００１５】
また、フロントパネルの成形金型を製作するにあたって、小さいボスに従来のようにスリットを形成する必要がないので、成形金型の構造が簡単になり、その簡単になった分だけ金型加工費を安くすることができる。
【００１６】
更に、両拡径溝をむすぶ縦断方向とは直交する横断方向に沿って位置決め孔が拡径可能に形成され、該位置決め孔の周縁部が薄肉状に形成されて弾性変形可能にされており、その両者の相乗効果により、例えば成形誤差によりボスが位置決め孔に対して横断方向に位置ずれしている場合や位置決め孔の内径に対してボスの外径が大きい場合でも、該ボスに対して位置決め孔を拡径または弾性変形させて確実に嵌合させることができ、これによって、位置決め孔が形成された基板を介してローディングスイッチ用押釦と駆動表示灯用レンズとをディスクプレーヤのフロントパネルの裏面に所望通りに迅速に位置決めすることができる。
【００１７】
請求項２に記載の考案は、ディスクプレーヤのケーシング内に配置したローディング用スイッチの前方に設けた合成樹脂製押釦と該ケーシング内に配置した駆動表示灯の前方に設けた合成樹脂製レンズとをケーシングの前面に設けた合成樹脂製フロントパネルの裏面に固定するものであって、前記押釦に弾性アームを介して一体形成した基板と前記レンズに一体形成した基板とにそれぞれ所定間隔をおいて一対の位置決め孔が貫設され、該各位置決め孔に対向してフロントパネルの裏面に前記各位置決め孔と同径またはわずかに大径のボスが突設され、該各ボスにスリットを形成することにより、その各ボスが縮径可能に成形されており、前記各ボスに各位置決め孔を嵌合させることにより、前記押釦をフロントパネルの押釦孔に同心状に挿入すると共に、前記レンズをフロントパネルのレンズ孔に同心状に挿入し、ホットプレスにより前記各ボスの先端部を溶解させて抜け止め頭部を形成することにより、前記各基板をフロントパネルの裏面に固定させるようにした電気機器用部品の固定装置において、前記スリット付きボスに代えて円柱状ボスが前記フロントパネルの裏面に突設され、前記各位置決め孔の内周面に４つの拡径溝を周方向に９０°の間隔をおいて形成することにより、その各位置決め孔が拡径可能に形成され、前記各基板に各位置決め孔よりも大径の凹部を該各位置決め孔と同心状に凹設することにより、その各位置決め孔の周縁部が薄肉状に形成されていることを特徴としている。
【００１８】
上記構成は第２の実施の形態（図５及び図６参照）に対応するものであって、これによれば、請求項１に記載の考案とほぼ同様の効果を得ることができ、特に、十字状に配置した４つの拡径溝により位置決め孔が縦横に拡径可能に形成され、該位置決め孔の周縁部が薄肉状に形成されて弾性変形可能にされており、その両者の相乗効果により、例えば成形誤差によりボスが位置決め孔に対して横断方向だけでなく縦断方向にも位置ずれしている場合や位置決め孔の内径に対してボスの外径が大きい場合でも、該ボスに対して位置決め孔を拡径または弾性変形させて確実に嵌合させることができる。
【００１９】
請求項３に記載の考案は、ディスクプレーヤのケーシング内に配置したローディング用スイッチの前方に設けた合成樹脂製押釦と該ケーシング内に配置した駆動表示灯の前方に設けた合成樹脂製レンズとをケーシングの前面に設けた合成樹脂製フロントパネルの裏面に固定するものであって、前記押釦に弾性アームを介して一体形成した基板と前記レンズに一体形成した基板とにそれぞれ所定間隔をおいて一対の位置決め孔が貫設され、該各位置決め孔に対向してフロントパネルの裏面に前記各位置決め孔と同径またはわずかに大径のボスが突設され、該各ボスにスリットを形成することにより、その各ボスが縮径可能に成形されており、前記各ボスに各位置決め孔を嵌合させることにより、前記押釦をフロントパネルの押釦孔に同心状に挿入すると共に、前記レンズをフロントパネルのレンズ孔に同心状に挿入し、ホットプレスにより前記各ボスの先端部を溶解させて抜け止め頭部を形成することにより、前記各基板をフロントパネルの裏面に固定させるようにした電気機器用部品の固定装置において、前記スリット付きボスに代えて円柱状ボスが前記フロントパネルの裏面に突設され、前記各位置決め孔の内周面に多数の略Ｖ字状拡径溝が周方向に連続的に形成され、前記各基板に各位置決め孔よりも大径の凹部を該各位置決め孔と同心状に凹設することにより、その各位置決め孔の周縁部が薄肉状に形成されていることを特徴としている。
【００２０】
上記構成は第３の実施の形態（図７及び図８参照）に対応するものであって、これによれば、請求項１に記載の考案とほぼ同様の効果を得ることができ、特に、周方向に連続的に多数形成された拡径溝により位置決め孔が全方位に拡径可能に形成され、該位置決め孔の周縁部が薄肉状に形成されて弾性変形可能にされており、その両者の相乗効果により、例えば成形誤差によりボスが位置決め孔に対してどの方向に位置ずれしている場合でも、また、位置決め孔の内径に対してボスの外径が大きい場合でも、該ボスに対して位置決め孔を拡径または弾性変形させて確実に嵌合させることができる。
【００２１】
ここで重要なことは、前記各拡径溝が略Ｖ字状で周方向に連続的に多数形成されているということであり、各拡径溝間に三角状頂点が周方向に小間隔で多数形成され、該各三角状頂点をボスの外周面に点々状に接触させるだけであるから、ボスに対する位置決め孔の嵌合作業を迅速容易に行うことができると共に、各三角状頂点によりボスを全周から確実に支持することができ、これによって、フロントパネルの裏面に対する押釦やレンズの取付作業を能率良く正確に行うことができる。
【００２２】
請求項４に記載の考案は、電気機器のケーシング内に配置した部品を該ケーシングの前面に設けた合成樹脂製フロントパネルの裏面に固定するものであって、前記部品に一体形成した基板に所定間隔をおいて一対の位置決め孔が貫設され、該各位置決め孔に対向してフロントパネルの裏面に前記各位置決め孔と同径またはわずかに大径の円柱状ボスが突設され、前記各位置決め孔の内周面に周方向所定間隔をおいて複数の拡径溝を形成することにより、該各位置決め孔が拡径可能に形成されており、前記各ボスに各位置決め孔を嵌合させることにより、前記部品をフロントパネルに位置決めし、ホットプレスにより前記各ボスの先端部を溶解させて抜け止め頭部を形成することにより、前記基板をフロントパネルの裏面に固定させることを特徴としている。
【００２３】
上記構成によれば、フロントパネルの裏面に突設したボスが円柱状に形成されて強度大であるため、位置決め孔を拡径させてボスに嵌合させたとき、その嵌合の際の負荷によってボスが破損されることがなくなり、従来問題となっていたスリット付きボスの破損によるフロントパネルの廃棄という難点を解消して、コストアップの一因を除去することができる。
【００２４】
また、フロントパネルの成形金型を製作するにあたって、小さいボスに従来のようにスリットを形成する必要がないので、成形金型の構造が簡単になり、その簡単になった分だけ金型加工費を安くすることができる。
【００２５】
請求項５に記載の考案は、請求項４に記載の考案において、前記拡径溝が各位置決め孔の内周面に周方向に１８０°の間隔をおいて２つ形成されていることを特徴としている。
【００２６】
上記構成によれば、両拡径溝をむすぶ縦断方向とは直交する横断方向に沿って位置決め孔が拡径可能に形成されているから、例えば成形誤差によりボスが位置決め孔に対して横断方向に位置ずれしている場合でも、そのボスに対して位置決め孔を確実に嵌合させることができる。
【００２７】
請求項６に記載の考案は、請求項４に記載の考案において、前記拡径溝が各位置決め孔の内周面に周方向に９０°の間隔をおいて４つ形成されていることを特徴としている。
【００２８】
上記構成によれば、十字状に配置した４つの拡径溝により位置決め孔が縦横に拡径可能に形成されているから、例えば成形誤差によりボスが位置決め孔に対して横断方向だけでなく縦断方向にも位置ずれしている場合でも、そのボスに対して位置決め孔を確実に嵌合させることができる。
【００２９】
請求項７に記載の考案は、請求項４に記載の考案において、前記拡径溝が略Ｖ字状に形成されて各位置決め孔の内周面に周方向に連続的に多数形成されていることを特徴としている。
【００３０】
上記構成によれば、周方向に連続的に多数形成された拡径溝により位置決め孔が全方位に拡径可能に形成されているから、例えば成形誤差によりボスが位置決め孔に対してどの方向に位置ずれしている場合でも、そのボスに対して位置決め孔を確実に嵌合させることができる。
【００３１】
ここで重要なことは、前記各拡径溝が略Ｖ字状で周方向に連続的に多数形成されているということであり、各拡径溝間に三角状頂点が周方向に小間隔で多数形成され、該各三角状頂点をボスの外周面に点々状に接触させるだけであるから、ボスに対する位置決め孔の嵌合作業を迅速容易に行うことができると共に、各三角状頂点によりボスを全周から確実に支持することができ、これによって、フロントパネルの裏面に対する部品の取付作業を能率良く正確に行うことができる。
【００３２】
請求項８に記載の考案は、請求項４から７のいずれかに記載の考案において、前記各基板に各位置決め孔よりも大径の凹部を該各位置決め孔と同心状に凹設することにより、その各位置決め孔の周縁部が薄肉状に形成されていることを特徴としている。
【００３３】
上記構成によれば、位置決め孔の周縁部が薄肉状に形成されて弾性変形可能であるから、例えば成形誤差により各位置決め孔の内径に対して各ボスの外径が大きい場合やボスが位置決め孔に対して位置ずれしている場合でも、位置決め孔の周縁部を弾性変形させて、そのボスに対して位置決め孔を容易に嵌合させることができる。
【００３４】
【考案の実施の形態】
図１から図４は本考案の第１の実施の形態であるディスクプレーヤにおけるローディングスイッチ用押釦（部品）３の固定装置を示すものであって、フロントパネル６の裏面に突設した一対のボス１５が円柱状に形成され、該各ボス１５に対向して押釦３の基板１１に形成した各位置決め孔１４の内周面に２つの拡径溝２０を周方向に１８０°の間隔をおいて形成することにより、両拡径溝２０をむすぶ縦断方向ａ，ｂとは直交する横断方向ｃ，ｄにその各位置決め孔１４が拡径可能に形成され、各基板１１の裏面に各位置決め孔１４よりも大径の凹部２１を該各位置決め孔１４と同心状に凹設することにより、その各位置決め孔１４の周縁部１４ａが肉厚ｅを０．５ｍｍ程度とした薄肉状に形成されている。上記以外の構成は図９から図１５に示す構成とほぼ同じであるから、同一部分に同一符号を付してその説明を省略する。
【００３５】
押釦３の固定手順を説明すると、図４に示す状態から、各ボス１５に各位置決め孔１４を嵌合させることにより〔図４（ｂ）仮想線参照〕、押釦３をフロントパネル６の押釦孔１７に挿入して、その押釦３の軸心Ｏ１を押釦孔１７の軸心Ｏ２に一致させ、図２に示すように、ホットプレスＨにより各ボス１５の先端部を溶解させて抜け止め頭部１５Ａを形成することにより、各基板１１をフロントパネル６の裏面に固定させる。
【００３６】
上記構成によれば、フロントパネル６の裏面に突設したボス１５が円柱状に形成されて強度大であるため、位置決め孔１４を拡径させてボス１５に嵌合させたときに、その嵌合の際の負荷Ｗによってボスが破損されることがなくなり（図１６参照）、従来問題となっていたスリット１６付きボス１５の破損によるフロントパネル６の廃棄という難点を解消して、コストアップの一因を除去することができる。
【００３７】
また、フロントパネル６の成形金型を製作するにあたって、小さいボス１５に従来のようにスリット１６（図１５参照）を形成する必要がないので、成形金型の構造が簡単になり、その簡単になった分だけ金型加工費を安くすることができる。
【００３８】
更に、両拡径溝２０をむすぶ縦断方向ａ，ｂとは直交する横断方向ｃ，ｄに沿って位置決め孔１４が拡径可能に形成され、該位置決め孔１４の周縁部１４ａが薄肉状に形成されて弾性変形可能にされており、その両者の相乗効果により、例えば成形誤差によりボス１５が位置決め孔１４に対して横断方向ｃ，ｄに位置ずれしている場合や位置決め孔１４の内径ｆに対してボス１５の外径Ｆが大きい場合でも、該ボス１５に対して位置決め孔１４を拡径または弾性変形させて確実に嵌合させることができ、これによって、位置決め孔１４が形成された基板１１を介してローディングスイッチ２用押釦３をフロントパネル６の裏面に所望通りに迅速に位置決めすることができる。
【００３９】
図５及び図６は本考案の第２の実施の形態であるディスクプレーヤにおけるローディングスイッチ用押釦（部品）３の固定装置を示すものであって、各位置決め孔１４の内周面に４つの拡径溝２０を周方向に９０°の間隔をおいて形成することにより、その各位置決め孔１４が拡径可能に形成されている。上記以外の構成は図１から図４に示す第１の実施の形態とほぼ同じであるから、同一部分に同一符号を付してその説明を省略する。
【００４０】
上記構成によれば、第１の実施の形態とほぼ同様の効果を得ることができ、特に、十字状に配置した４つの拡径溝２０により位置決め孔１４が縦横ａ〜ｄに拡径可能に形成され、該位置決め孔１４の周縁部１４ａが薄肉状に形成されて弾性変形可能にされており、その両者の相乗効果により、例えば成形誤差によりボス１５が位置決め孔１４に対して横断方向ｃ，ｄだけでなく縦断方向ａ，ｂにも位置ずれしている場合や位置決め孔１４の内径ｆに対してボス１５の外径Ｆが大きい場合でも、該ボス１５に対して位置決め孔１４を拡径または弾性変形させて確実に嵌合させることができる。
【００４１】
図７及び図８は本考案の第３の実施の形態であるディスクプレーヤにおけるローディングスイッチ用押釦（部品）３の固定装置を示すものであって、各位置決め孔１４の内周面に多数の略Ｖ字状拡径溝２０が周方向に連続的に形成されている。上記以外の構成は図１から図４に示す第１の実施の形態とほぼ同じであるから、同一部分に同一符号を付してその説明を省略する。
【００４２】
上記構成によれば、第１の実施の形態とほぼ同様の効果を得ることができ、特に、周方向に連続的に多数形成された拡径溝２０により位置決め孔１４が全方位に拡径可能に形成され、該位置決め孔１４の周縁部１４ａが薄肉状に形成されて弾性変形可能にされており、その両者の相乗効果により、例えば成形誤差によりボス１５が位置決め孔１４に対してどの方向に位置ずれしている場合でも、また、位置決め孔１４の内径ｆに対してボス１５の外径Ｆが大きい場合でも、該ボス１５に対して位置決め孔１４を拡径または弾性変形させて確実に嵌合させることができる。
【００４３】
ここで重要なことは、前記各拡径溝２０が略Ｖ字状で周方向に連続的に多数形成されているということであり、各拡径溝２０間に三角状頂点１４Ａが周方向に小間隔で多数形成され、該各三角状頂点１４Ａをボス１５の外周面に点々状に接触させるだけであるから、ボス１５に対する位置決め孔１４の嵌合作業を迅速容易に行うことができると共に、各三角状頂点１４Ａによりボス１５を全周から確実に支持することができ、これによって、フロントパネル６の裏面に対する押釦３の取付作業を能率良く正確に行うことができる。
【００４４】
上記の各実施の形態では、ローディングスイッチ２用押釦３を固定する場合を例にあげて説明したが、駆動表示灯４用レンズ５についても同様の手順で固定されているから、その説明を省略する（図９及び図１０参照）。
【００４５】
また、ディスクプレーヤを例にあげて説明したが、これに限定されるわけではなく、各種電気機器の部品を固定する場合にも適用することができる。
【００４６】
【考案の効果】
請求項１に記載の考案によれば、第１の実施の形態（図１から図４参照）に示すように、フロントパネルの裏面に突設したボスが円柱状に形成されて強度大であるため、位置決め孔を拡径させてボスに嵌合させたとき、その嵌合の際の負荷によってボスが破損されることがなくなり、従来問題となっていたスリット付きボスの破損によるフロントパネルの廃棄という難点を解消して、コストアップの一因を除去することができる。
【００４７】
また、フロントパネルの成形金型を製作するにあたって、小さいボスに従来のようにスリットを形成する必要がないので、成形金型の構造が簡単になり、その簡単になった分だけ金型加工費を安くすることができる。
【００４８】
更に、両拡径溝をむすぶ縦断方向とは直交する横断方向に沿って位置決め孔が拡径可能に形成され、該位置決め孔の周縁部が薄肉状に形成されて弾性変形可能にされており、その両者の相乗効果により、例えば成形誤差によりボスが位置決め孔に対して横断方向に位置ずれしている場合や位置決め孔の内径に対してボスの外径が大きい場合でも、該ボスに対して位置決め孔を拡径または弾性変形させて確実に嵌合させることができ、これによって、位置決め孔が形成された基板を介してローディングスイッチ用押釦と駆動表示灯用レンズとをディスクプレーヤのフロントパネルの裏面に所望通りに迅速に位置決めすることができる。
【００４９】
請求項２に記載の考案によれば、第２の実施の形態（図５及び図６参照）に示すように、請求項１に記載の考案とほぼ同様の効果を得ることができ、特に、十字状に配置した４つの拡径溝により位置決め孔が縦横に拡径可能に形成され、該位置決め孔の周縁部が薄肉状に形成されて弾性変形可能にされており、その両者の相乗効果により、例えば成形誤差によりボスが位置決め孔に対して横断方向だけでなく縦断方向にも位置ずれしている場合や位置決め孔の内径に対してボスの外径が大きい場合でも、該ボスに対して位置決め孔を拡径または弾性変形させて確実に嵌合させることができる。
【００５０】
請求項３に記載の考案によれば、第３の実施の形態（図７及び図８参照）に示すように、請求項１に記載の考案とほぼ同様の効果を得ることができ、特に、周方向に連続的に多数形成された拡径溝により位置決め孔が全方位に拡径可能に形成され、該位置決め孔の周縁部が薄肉状に形成されて弾性変形可能にされており、その両者の相乗効果により、例えば成形誤差によりボスが位置決め孔に対してどの方向に位置ずれしている場合でも、また、位置決め孔の内径に対してボスの外径が大きい場合でも、該ボスに対して位置決め孔を拡径または弾性変形させて確実に嵌合させることができる。
【００５１】
ここで重要なことは、前記各拡径溝が略Ｖ字状で周方向に連続的に多数形成されているということであり、各拡径溝間に三角状頂点が周方向に小間隔で多数形成され、該各三角状頂点をボスの外周面に点々状に接触させるだけであるから、ボスに対する位置決め孔の嵌合作業を迅速容易に行うことができると共に、各三角状頂点によりボスを全周から確実に支持することができ、これによって、フロントパネルの裏面に対する押釦やレンズの取付作業を能率良く正確に行うことができる。
【００５２】
請求項４に記載の考案によれば、フロントパネルの裏面に突設したボスが円柱状に形成されて強度大であるため、位置決め孔を拡径させてボスに嵌合させたとき、その嵌合の際の負荷によってボスが破損されることがなくなり、従来問題となっていたスリット付きボスの破損によるフロントパネルの廃棄という難点を解消して、コストアップの一因を除去することができる。
【００５３】
また、フロントパネルの成形金型を製作するにあたって、小さいボスに従来のようにスリットを形成する必要がないので、成形金型の構造が簡単になり、その簡単になった分だけ金型加工費を安くすることができる。
【００５４】
請求項５に記載の考案によれば、両拡径溝をむすぶ縦断方向とは直交する横断方向に沿って位置決め孔が拡径可能に形成されているから、例えば成形誤差によりボスが位置決め孔に対して横断方向に位置ずれしている場合でも、そのボスに対して位置決め孔を確実に嵌合させることができる。
【００５５】
請求項６に記載の考案によれば、十字状に配置した４つの拡径溝により位置決め孔が縦横に拡径可能に形成されているから、例えば成形誤差によりボスが位置決め孔に対して横断方向だけでなく縦断方向にも位置ずれしている場合でも、そのボスに対して位置決め孔を確実に嵌合させることができる。
【００５６】
請求項７に記載の考案によれば、周方向に連続的に多数形成された拡径溝により位置決め孔が全方位に拡径可能に形成されているから、例えば成形誤差によりボスが位置決め孔に対してどの方向に位置ずれしている場合でも、そのボスに対して位置決め孔を確実に嵌合させることができる。
【００５７】
ここで重要なことは、前記各拡径溝が略Ｖ字状で周方向に連続的に多数形成されているということであり、各拡径溝間に三角状頂点が周方向に小間隔で多数形成され、該各三角状頂点をボスの外周面に点々状に接触させるだけであるから、ボスに対する位置決め孔の嵌合作業を迅速容易に行うことができると共に、各三角状頂点によりボスを全周から確実に支持することができ、これによって、フロントパネルの裏面に対する部品の取付作業を能率良く正確に行うことができる。
【００５８】
請求項８に記載の考案によれば、位置決め孔の周縁部が薄肉状に形成されて弾性変形可能であるから、例えば成形誤差により各位置決め孔の内径に対して各ボスの外径が大きい場合やボスが位置決め孔に対して位置ずれしている場合でも、位置決め孔の周縁部を弾性変形させて、そのボスに対して位置決め孔を容易に嵌合させることができる。
【図面の簡単な説明】
【図１】本考案の第１の実施の形態であるディスクプレーヤにおけるローディングスイッチ用押釦の固定装置を示す正面図である。
【図２】図１のＡ−Ａ矢視図である。
【図３】同要部の裏面図である。
【図４】（ａ）は同要部の分解斜視図、（ｂ）は同分解状態の縦断面図、（ｃ）はフロントパネルと押釦用基板の裏面図である。
【図５】本考案の第２の実施の形態であるディスクプレーヤにおけるローディングスイッチ用押釦の固定装置を示す正面図である。
【図６】（ａ）は同要部の分解斜視図、（ｂ）は同分解状態の縦断面図、（ｃ）はフロントパネルと押釦用基板の裏面図である。
【図７】本考案の第３の実施の形態であるディスクプレーヤにおけるローディングスイッチ用押釦の固定装置を示す正面図である。
【図８】（ａ）は同要部の分解斜視図、（ｂ）は同分解状態の縦断面図、（ｃ）はフロントパネルと押釦用基板の裏面図である。
【図９】ディスクプレーヤの斜視図である。
【図１０】同フロントパネルの裏面図である。
【図１１】図１０のＢ−Ｂ矢視図である。
【図１２】従来例を示す正面図である。
【図１３】図１２のＣ−Ｃ矢視図である。
【図１４】同要部の裏面図である。
【図１５】（ａ）は同要部の分解斜視図、（ｂ）は同分解状態の縦断面図、（ｃ）はフロントパネルと押釦用基板の裏面図である。
【図１６】同ボスの破損状態を示す斜視図である。
【符号の説明】
１　　　　ケーシング
２　　　　ローディングスイッチ
３　　　　押釦（部品）
４　　　　駆動表示灯
５　　　　レンズ（部品）
６　　　　フロントパネル
１１　　　基板
１３　　　弾性アーム
１４　　　位置決め孔
１４ａ　　位置決め孔の周縁部
１５　　　ボス
１５Ａ　　抜け止め頭部
１７　　　押釦孔
１８　　　レンズ孔
２０　　　拡径溝
２１　　　凹部
Ｈ　　　　ホットプレス
Ｆ　　　　ボスの外径
ｆ　　　　位置決め孔の内径[0001]
[Technical field to which the invention belongs]
The present invention relates to a device for fixing a component for an electric device for fixing a component such as a push button or a lens used in an electric device such as a DVD / RW disk player.
[0002]
[Prior art]
FIGS. 9 to 11 show examples of DVD / RW disc players. This is a synthetic resin push button (component) 3 provided in front of a loading switch 2 disposed in a casing 1 and a synthetic resin lens provided in front of a drive indicator 4 composed of a light emitting diode disposed in the casing 1. (Parts) 5 are fixed to the back surface of a synthetic resin front panel 6 provided on the front surface of the casing 1. In FIG. 9, 7 is a volume knob, 8 is a headphone jack, and 9 is a tray.
[0003]
The operation procedure will be described. When the push button 3 is pressed, the loading switch 2 is operated, and based on the operation signal, the tray 9 is unloaded (see a virtual line in FIG. 9), and a disc (not shown) is placed on the tray 9 After loading, the loading switch 2 is operated by pressing the push button 3, and the tray 9 is loaded based on the operation signal (see the solid line in FIG. 9), and the disc on the tray 9 is rotated by the turntable. The information recorded on the disc is read by the optical pickup, and the drive of the disc player is displayed by illuminating the lens 5 with the drive indicator 4.
[0004]
Conventionally, a technique for fixing the push button 3 is described in Patent Literature 1 or the like. An example will be described with reference to FIGS. 12 to 15. By forming the U-shaped notch hole 12, a portion connecting the substrate 11 and the push button 3 is formed as an elastic arm 13 that can be elastically deformed. 14, a pair of bosses 15 having an outer diameter F that is the same as or slightly larger than the inner diameter f of each positioning hole 14 is provided on the back surface of the front panel 6 so as to face each of the positioning holes 14. By forming slits 16 in each of the bosses 15, each boss 15 is divided into two small pieces 15a so that the diameter can be reduced, and each positioning hole 14 is fitted into each boss 15 from the state shown in FIG. Let [Refer to FIG. 15 (b) virtual line], the push button 3 is inserted into the push button hole 17 of the front panel 6, and the axis O1 of the push button 3 coincides with the axis O2 of the push button hole 17, and FIG. As shown, the tip of each boss 15 is melted by a hot press H to form a retaining head 15A, thereby fixing each substrate 11 to the back surface of the front panel 6.
[0005]
To explain an example of specific dimensions, the distance L between the positioning holes 14 and the bosses 15 is 10 mm, the inner diameter f of the positioning holes 14 and the outer diameter F of the boss 15 are 2 mm, the height h of the boss 15 is 4 mm, and the slits. 16 has a width t of 0.5 mm.
[0006]
The lens 5 is fixed in the same procedure as the push button 3 and is positioned concentrically in the lens hole 18. The same portions are denoted by the same reference numerals and description thereof is omitted (see FIGS. 9 and 10). .
[0007]
[Patent Document 1]
JP-A-9-283940
[0008]
[Problems to be solved by the invention]
In the above configuration, as shown in FIG. 15, the outer diameter F of the boss 15 is 2 mm, the height h is about 4 mm, and both small pieces 15 a formed with the slit 16 in the small boss 15 are thin and the boss 15 is thin. Since the strength is low, when the positioning hole 14 is aligned with and fitted to the boss 15, a load W is applied to both small pieces 15a, and as shown in FIG. 16, one small piece 15a may be damaged. In this case, the front panel 6 becomes defective and must be discarded, and the disposal rate is high, resulting in an increase in cost.
[0009]
Further, when the boss 15 is reduced in diameter and fitted into the positioning hole 14, the boss 15 can be reduced in diameter only in the transverse directions c and d orthogonal to the longitudinal directions a and b of the slit 16. For example, when the boss 15 is displaced in the longitudinal direction a, b with respect to the positioning hole 14 due to a molding error, it becomes difficult to fit the positioning hole 14 to the boss 15.
[0010]
Therefore, as shown by a virtual line in FIG. 15C, it is conceivable to form a slit 16 in the transverse direction c, d in the boss 15, but since the boss 15 is extremely small, the boss 15 has a cross shape. It is extremely difficult to form the slit 16 of this type, and it is practically impossible to cope with a displacement in the longitudinal directions a and b.
[0011]
Further, when manufacturing a molding die for the front panel 6, it is necessary to form an extremely thin slit 16 having a width t of about 0.5 mm in the small boss 15, so it is necessary to finish the molding die precisely. Mold processing cost is high.
[0012]
SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-described problems, and has as its object to provide a fixing device for an electric device component in which a boss is not damaged and a position can be adjusted vertically and horizontally and a mold processing cost is reduced.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is provided with a synthetic resin push button provided in front of a loading switch disposed in a casing of a disc player and a drive indicator light disposed in front of the loading switch disposed in the casing. A synthetic resin lens and a synthetic resin front panel provided on the front surface of the casing are fixed to the back surface of the synthetic resin front panel, and a substrate integrally formed with the push button via an elastic arm and a substrate integrally formed with the lens are respectively provided. A pair of positioning holes are penetrated at predetermined intervals, and bosses having the same diameter or slightly larger diameter as the respective positioning holes project from the back surface of the front panel facing the respective positioning holes. By forming a slit, each boss is formed so that its diameter can be reduced, and by fitting each positioning hole to each boss, the push button is moved to the front panel. By inserting the lens concentrically into the lens hole of the front panel and dissolving the tip of each boss by hot pressing to form a retaining head, In the fixing device for electrical equipment parts, wherein each substrate is fixed to the back surface of the front panel, a cylindrical boss is protruded from the back surface of the front panel in place of the boss with the slit, and an inner periphery of each positioning hole is provided. By forming two enlarged grooves on the surface at an interval of 180 ° in the circumferential direction, each positioning hole is formed so as to be able to expand in diameter, and a concave portion having a larger diameter than each positioning hole is formed in each substrate. By being recessed concentrically with each positioning hole, the peripheral portion of each positioning hole is formed to be thin.
[0014]
The above configuration corresponds to the first embodiment (see FIGS. 1 to 4). According to this configuration, the boss protruding from the back surface of the front panel is formed in a columnar shape, and the strength is large. Therefore, when the positioning hole is enlarged and fitted to the boss, the boss is not damaged by the load at the time of the fitting, and the disposal of the front panel due to the damage of the slit boss, which has been a problem in the past, is eliminated. Thus, it is possible to eliminate one of the causes of cost increase.
[0015]
In addition, when manufacturing a molding die for the front panel, it is not necessary to form a slit in a small boss as in the past, so that the structure of the molding die is simplified, and the mold processing cost is reduced by the simplification. Can be cheaper.
[0016]
Furthermore, a positioning hole is formed so as to be able to expand the diameter along a transverse direction orthogonal to the longitudinal direction that connects both the diameter expanding grooves, and a peripheral portion of the positioning hole is formed in a thin shape so as to be elastically deformable. Due to the synergistic effect of the two, even when the boss is displaced in the transverse direction with respect to the positioning hole due to, for example, a molding error or when the outer diameter of the boss is larger than the inner diameter of the positioning hole, the positioning with respect to the boss is performed. The hole can be securely fitted by expanding or elastically deforming the hole, whereby the loading switch push button and the drive indicator lens can be connected to the rear surface of the front panel of the disc player via the substrate on which the positioning hole is formed. As quickly as desired.
[0017]
The invention according to claim 2 comprises a synthetic resin push button provided in front of a loading switch disposed in a casing of a disc player and a synthetic resin lens provided in front of a drive indicator light disposed in the casing. It is fixed to the back surface of a synthetic resin front panel provided on the front surface of the casing, and a pair of the push button and the substrate integrally formed on the lens and the lens integrally formed via the elastic arm at predetermined intervals. A boss having the same diameter or a slightly larger diameter as each of the positioning holes is protrudingly provided on the back surface of the front panel opposite to each of the positioning holes, and a slit is formed in each of the bosses. Each of the bosses is formed so that its diameter can be reduced, and each of the bosses is fitted with each of the positioning holes so that the push buttons are concentrically inserted into the push button holes of the front panel. At the same time, by inserting the lens concentrically into the lens hole of the front panel and dissolving the tip of each boss by hot pressing to form a retaining head, the substrates are placed on the back surface of the front panel. In the fixing device for an electric device component to be fixed, a cylindrical boss is protruded from the back surface of the front panel in place of the boss with the slit, and four enlarged grooves are formed on the inner peripheral surface of each of the positioning holes. By forming the holes at 90 ° intervals in the circumferential direction, the respective positioning holes are formed so as to be able to expand in diameter, and concave portions having a larger diameter than the respective positioning holes are formed in the respective substrates concentrically with the respective positioning holes. With this arrangement, the peripheral edge of each positioning hole is formed to be thin.
[0018]
The configuration described above corresponds to the second embodiment (see FIGS. 5 and 6), and according to this configuration, substantially the same effect as the device according to the first aspect can be obtained. A positioning hole is formed so as to be able to expand in the vertical and horizontal directions by four cross-shaped expanding grooves arranged in a cross shape, and a peripheral portion of the positioning hole is formed in a thin shape so as to be elastically deformable. For example, even when the boss is misaligned not only in the transverse direction but also in the longitudinal direction with respect to the positioning hole due to a molding error, or when the outer diameter of the boss is larger than the inner diameter of the positioning hole, the positioning with respect to the boss is performed. The hole can be reliably fitted by expanding or elastically deforming the hole.
[0019]
The invention according to claim 3 comprises a synthetic resin push button provided in front of a loading switch disposed in a casing of a disc player and a synthetic resin lens provided in front of a drive indicator light disposed in the casing. It is fixed to the back surface of a synthetic resin front panel provided on the front surface of the casing, and a pair of the push button and the substrate integrally formed on the lens and the lens integrally formed via the elastic arm at predetermined intervals. A boss having the same diameter or a slightly larger diameter as each of the positioning holes is protrudingly provided on the back surface of the front panel opposite to each of the positioning holes, and a slit is formed in each of the bosses. Each of the bosses is formed so that its diameter can be reduced, and each of the bosses is fitted with each of the positioning holes so that the push buttons are concentrically inserted into the push button holes of the front panel. At the same time, by inserting the lens concentrically into the lens hole of the front panel and dissolving the tip of each boss by hot pressing to form a retaining head, the substrates are placed on the back surface of the front panel. In the device for fixing a component for electric equipment, a columnar boss is protruded from the back surface of the front panel in place of the slit boss, and a large number of substantially V-shaped portions are formed on an inner peripheral surface of each of the positioning holes. The enlarged-diameter groove is formed continuously in the circumferential direction, and a concave portion having a diameter larger than each positioning hole is formed concentrically with each of the positioning holes on each of the substrates, so that the peripheral edge portion of each of the positioning holes is thin. It is characterized by being formed in a shape.
[0020]
The above configuration corresponds to the third embodiment (see FIGS. 7 and 8), and according to this configuration, it is possible to obtain substantially the same effect as the device according to the first aspect. The positioning hole is formed so as to be able to expand in all directions by a large number of diameter-enlarging grooves formed continuously in the circumferential direction, and the peripheral portion of the positioning hole is formed to be thin and elastically deformable. Due to the synergistic effect, even if the boss is displaced in any direction with respect to the positioning hole due to molding error, or even if the outer diameter of the boss is larger than the inner diameter of the positioning hole, The positioning hole can be reliably fitted by expanding or elastically deforming the positioning hole.
[0021]
What is important here is that each of the large diameter grooves is formed substantially continuously in the circumferential direction in a substantially V-shape, and triangular vertices are formed at small intervals in the circumferential direction between the large diameter grooves. Since a large number are formed and each of the triangular vertices is only in point-to-point contact with the outer peripheral surface of the boss, the work of fitting the positioning holes to the boss can be performed quickly and easily, and the boss is formed by each of the triangular vertices. The support can be reliably carried out from the entire circumference, so that the work of attaching the push button and the lens to the back surface of the front panel can be performed efficiently and accurately.
[0022]
According to a fourth aspect of the present invention, a component disposed in a casing of an electric device is fixed to a back surface of a synthetic resin front panel provided on a front surface of the casing. A pair of positioning holes are penetrated at intervals, and a columnar boss having the same diameter or a slightly larger diameter as each of the positioning holes protrudes on the back surface of the front panel so as to face each of the positioning holes. By forming a plurality of diameter-enlarging grooves at predetermined intervals in the circumferential direction on the inner peripheral surface of the hole, each positioning hole is formed so as to be able to expand in diameter, and each positioning hole is fitted to each of the bosses. In this method, the components are positioned on the front panel, and the tip of each boss is melted by hot pressing to form a retaining head, thereby fixing the substrate to the back surface of the front panel. It is set to.
[0023]
According to the above configuration, since the boss protruding from the rear surface of the front panel is formed in a columnar shape and has high strength, when the positioning hole is enlarged and fitted to the boss, the load at the time of the fitting is increased. This prevents the boss from being damaged, and solves the problem of the disposal of the front panel due to the breakage of the slit boss, which has been a problem in the related art, and can eliminate one cause of the cost increase.
[0024]
In addition, when manufacturing a molding die for the front panel, it is not necessary to form a slit in a small boss as in the past, so that the structure of the molding die is simplified, and the mold processing cost is reduced by the simplification. Can be cheaper.
[0025]
According to a fifth aspect of the present invention, in the device according to the fourth aspect, two of the enlarged grooves are formed on the inner peripheral surface of each positioning hole at an interval of 180 ° in a circumferential direction. And
[0026]
According to the above configuration, since the positioning holes are formed so as to be able to expand in the transverse direction orthogonal to the longitudinal direction that connects the both enlarged grooves, for example, the boss is moved in the transverse direction with respect to the positioning holes due to a molding error. Even if the position is shifted, the positioning hole can be securely fitted to the boss.
[0027]
The invention according to claim 6 is the invention according to claim 4, characterized in that four of the enlarged grooves are formed on the inner peripheral surface of each positioning hole at 90 ° circumferential intervals. And
[0028]
According to the above configuration, since the positioning holes are formed so as to be able to expand in the vertical and horizontal directions by the four expanding grooves arranged in a cross shape, for example, due to a molding error, the boss not only crosses the positioning holes but also extends in the longitudinal direction. Even if the position is misaligned, the positioning hole can be securely fitted to the boss.
[0029]
According to a seventh aspect of the present invention, in the device according to the fourth aspect, the large-diameter groove is formed in a substantially V-shape, and a large number are continuously formed in the inner peripheral surface of each positioning hole in the circumferential direction. It is characterized by:
[0030]
According to the above configuration, the positioning holes are formed so as to be able to expand in all directions by the large diameter grooves continuously formed in a large number in the circumferential direction. Even if the position is shifted, the positioning hole can be securely fitted to the boss.
[0031]
What is important here is that each of the large diameter grooves is formed substantially continuously in the circumferential direction in a substantially V-shape, and triangular vertices are formed at small intervals in the circumferential direction between the large diameter grooves. Since a large number are formed and each of the triangular vertices is only in point-to-point contact with the outer peripheral surface of the boss, the work of fitting the positioning holes to the boss can be performed quickly and easily, and the boss is formed by each of the triangular vertices. The support can be reliably carried out from the entire circumference, so that the work of mounting components on the back surface of the front panel can be performed efficiently and accurately.
[0032]
The invention according to claim 8 is the invention according to any one of claims 4 to 7, wherein a concave portion having a diameter larger than each positioning hole is formed concentrically with each of the positioning holes in the substrate. The peripheral edge of each positioning hole is formed in a thin shape.
[0033]
According to the above configuration, since the peripheral portion of the positioning hole is formed in a thin shape and can be elastically deformed, for example, when the outer diameter of each boss is larger than the inner diameter of each positioning hole due to a molding error, or when the boss is positioned in the positioning hole. Even if it is misaligned with respect to the positioning hole, the peripheral edge of the positioning hole can be elastically deformed, and the positioning hole can be easily fitted to the boss.
[0034]
[Embodiment of the invention]
FIGS. 1 to 4 show a fixing device for a loading switch push button (part) 3 in a disc player according to a first embodiment of the present invention, and a pair of bosses projecting from the back surface of a front panel 6. 15 are formed in a columnar shape, and two large-diameter grooves 20 are formed on the inner peripheral surface of each positioning hole 14 formed in the substrate 11 of the push button 3 so as to face each of the bosses 15 at an interval of 180 ° in the circumferential direction. As a result, the respective positioning holes 14 are formed so as to be able to expand in the transverse directions c and d orthogonal to the longitudinal directions a and b extending through the both diameter expanding grooves 20, and the respective positioning holes 14 are formed on the back surface of each substrate 11. The concave portion 21 having a larger diameter than that of each positioning hole 14 is formed concentrically with each of the positioning holes 14 so that the peripheral edge portion 14a of each of the positioning holes 14 is formed in a thin shape with a thickness e of about 0.5 mm. . Since the configuration other than the above is substantially the same as the configuration shown in FIGS. 9 to 15, the same portions are denoted by the same reference numerals and description thereof will be omitted.
[0035]
The procedure for fixing the push button 3 will be described. From the state shown in FIG. 4, by fitting each positioning hole 14 to each boss 15 [see the phantom line in FIG. 17, the center O1 of the push button 3 is made to coincide with the center O2 of the push button hole 17, and as shown in FIG. By forming 15A, each substrate 11 is fixed to the back surface of front panel 6.
[0036]
According to the above configuration, since the boss 15 protruding from the back surface of the front panel 6 is formed in a columnar shape and has high strength, when the positioning hole 14 is fitted to the boss 15 by expanding the diameter thereof. The boss is not damaged by the load W at the time of the combination (see FIG. 16), and the problem of the disposal of the front panel 6 due to the damage of the boss 15 with the slit 16 which has been a problem in the past is solved, and the cost is increased. A factor can be eliminated.
[0037]
Further, in manufacturing a molding die for the front panel 6, it is not necessary to form a slit 16 (see FIG. 15) in the small boss 15 as in the related art, so that the structure of the molding die is simplified. The mold processing cost can be reduced by the amount of the loss.
[0038]
Further, the positioning hole 14 is formed so as to be able to expand in a transverse direction c, d perpendicular to the longitudinal direction a, b extending between the both diameter expanding grooves 20, and the peripheral edge portion 14a of the positioning hole 14 is formed in a thin shape. The boss 15 is displaced in the transverse directions c and d with respect to the positioning hole 14 due to a molding error, for example, due to a synergistic effect of the two, or the inner diameter f of the positioning hole 14 is reduced. On the other hand, even when the outer diameter F of the boss 15 is large, the positioning hole 14 can be securely fitted to the boss 15 by expanding or elastically deforming the positioning hole 14. The push button 3 for the loading switch 2 can be quickly positioned on the back surface of the front panel 6 as desired through the interface 11.
[0039]
FIGS. 5 and 6 show a device for fixing a push button (component) 3 for a loading switch in a disc player according to a second embodiment of the present invention. By forming the radial grooves 20 at 90 ° intervals in the circumferential direction, the respective positioning holes 14 are formed so as to be able to expand in diameter. Structures other than those described above are substantially the same as those of the first embodiment shown in FIGS. 1 to 4, and therefore, the same parts are denoted by the same reference characters and description thereof will be omitted.
[0040]
According to the above configuration, substantially the same effects as those of the first embodiment can be obtained. In particular, the positioning holes 14 can be expanded in the vertical and horizontal directions a to d by the four expanding grooves 20 arranged in a cross shape. The peripheral portion 14a of the positioning hole 14 is formed in a thin shape so as to be elastically deformable, and a synergistic effect of the two causes the boss 15 to move in the transverse direction c, Even when the position is shifted not only in d but also in the longitudinal directions a and b, or when the outer diameter F of the boss 15 is larger than the inner diameter f of the positioning hole 14, the positioning hole 14 is enlarged with respect to the boss 15. Alternatively, they can be securely fitted by being elastically deformed.
[0041]
FIGS. 7 and 8 show a device for fixing a push button (part) 3 for a loading switch in a disc player according to a third embodiment of the present invention. The V-shaped enlarged groove 20 is formed continuously in the circumferential direction. Structures other than those described above are substantially the same as those of the first embodiment shown in FIGS. 1 to 4, and therefore, the same parts are denoted by the same reference characters and description thereof will be omitted.
[0042]
According to the above configuration, substantially the same effects as those of the first embodiment can be obtained. In particular, the positioning holes 14 can be expanded in all directions by the large number of continuously expanding grooves 20 formed in the circumferential direction. The peripheral edge portion 14a of the positioning hole 14 is formed in a thin shape so as to be elastically deformable. Due to a synergistic effect of the two, the boss 15 moves in any direction with respect to the positioning hole 14 due to a molding error, for example. Even if the position is misaligned, or if the outer diameter F of the boss 15 is larger than the inner diameter f of the positioning hole 14, the positioning hole 14 is expanded or elastically deformed to the boss 15 to securely fit. Can be combined.
[0043]
What is important here is that the large diameter grooves 20 are formed substantially continuously in the circumferential direction in a substantially V-shape, and a triangular vertex 14A is formed between the large diameter grooves 20 in the circumferential direction. Since a large number of triangular vertices 14A are formed at small intervals, and each of the triangular vertices 14A only comes into contact with the outer peripheral surface of the boss 15 in a dotted manner, the work of fitting the positioning hole 14 to the boss 15 can be performed quickly and easily. The boss 15 can be reliably supported from the entire circumference by each of the triangular vertices 14A, so that the operation of attaching the push button 3 to the back surface of the front panel 6 can be performed efficiently and accurately.
[0044]
In each of the above embodiments, the case where the push button 3 for the loading switch 2 is fixed has been described as an example. However, since the lens 5 for the drive indicator 4 is also fixed in the same procedure, the description is omitted. (See FIGS. 9 and 10).
[0045]
Also, the disc player has been described as an example, but the present invention is not limited to this, and the present invention can be applied to a case where components of various electric devices are fixed.
[0046]
[Effect of the invention]
According to the first aspect of the present invention, as shown in the first embodiment (see FIGS. 1 to 4), the boss protruding from the back surface of the front panel is formed in a columnar shape and has high strength. Therefore, when the positioning hole is enlarged and fitted to the boss, the boss is not damaged by the load at the time of the fitting, and the front panel is discarded due to the damage of the slit boss, which has been a problem in the past. Thus, it is possible to eliminate one of the causes of the cost increase.
[0047]
In addition, when manufacturing a molding die for the front panel, it is not necessary to form a slit in a small boss as in the past, so that the structure of the molding die is simplified, and the mold processing cost is reduced by the simplification. Can be cheaper.
[0048]
Furthermore, a positioning hole is formed so as to be able to expand the diameter along a transverse direction orthogonal to the longitudinal direction that connects both the diameter expanding grooves, and a peripheral portion of the positioning hole is formed in a thin shape so as to be elastically deformable. Due to the synergistic effect of the two, even when the boss is displaced in the transverse direction with respect to the positioning hole due to, for example, a molding error or when the outer diameter of the boss is larger than the inner diameter of the positioning hole, the positioning with respect to the boss is performed. The hole can be securely fitted by expanding or elastically deforming the hole, whereby the loading switch push button and the drive indicator lens can be connected to the rear surface of the front panel of the disc player via the substrate on which the positioning hole is formed. As quickly as desired.
[0049]
According to the invention described in claim 2, as shown in the second embodiment (see FIGS. 5 and 6), substantially the same effect as the invention described in claim 1 can be obtained. A positioning hole is formed so as to be able to expand in the vertical and horizontal directions by four cross-shaped expanding grooves arranged in a cross shape, and a peripheral portion of the positioning hole is formed in a thin shape so as to be elastically deformable. For example, even when the boss is misaligned not only in the transverse direction but also in the longitudinal direction with respect to the positioning hole due to a molding error, or when the outer diameter of the boss is larger than the inner diameter of the positioning hole, the positioning with respect to the boss is performed. The hole can be securely fitted by expanding or elastically deforming the hole.
[0050]
According to the invention of claim 3, as shown in the third embodiment (see FIGS. 7 and 8), substantially the same effect as that of the invention of claim 1 can be obtained. The positioning hole is formed so as to be diametrically expandable in all directions by a large number of diameter expanding grooves formed continuously in the circumferential direction, and the peripheral edge portion of the positioning hole is formed to be thin and elastically deformable. Due to the synergistic effect, even if the boss is displaced in any direction with respect to the positioning hole due to a molding error, or even if the outer diameter of the boss is larger than the inner diameter of the positioning hole, The positioning hole can be securely fitted by expanding or elastically deforming the positioning hole.
[0051]
What is important here is that each of the large diameter grooves is formed substantially continuously in the circumferential direction in a substantially V-shape, and triangular vertices are formed at small intervals in the circumferential direction between the large diameter grooves. Since a large number are formed and each of the triangular vertices is only in point-to-point contact with the outer peripheral surface of the boss, the work of fitting the positioning holes to the boss can be performed quickly and easily, and the boss is formed by each of the triangular vertices. The support can be reliably carried out from the entire circumference, so that the work of attaching the push button and the lens to the back surface of the front panel can be performed efficiently and accurately.
[0052]
According to the invention as set forth in claim 4, since the boss projecting from the back surface of the front panel is formed in a columnar shape and has a large strength, when the positioning hole is fitted to the boss by expanding the diameter of the positioning hole. The boss is not damaged by the load at the time of the combination, and the problem of the disposal of the front panel due to the damage of the boss with the slit, which has been a problem in the related art, can be eliminated, and one cause of the cost increase can be eliminated.
[0053]
In addition, when manufacturing a molding die for the front panel, it is not necessary to form a slit in a small boss as in the past, so that the structure of the molding die is simplified, and the mold processing cost is reduced by the simplification. Can be cheaper.
[0054]
According to the invention as set forth in claim 5, since the positioning hole is formed so as to be able to expand in a transverse direction orthogonal to the longitudinal direction extending through both the expanding grooves, the boss is formed in the positioning hole due to a molding error, for example. Even when the boss is displaced in the transverse direction, the positioning hole can be securely fitted to the boss.
[0055]
According to the invention as set forth in claim 6, since the positioning hole is formed so as to be able to expand in the vertical and horizontal directions by the four expanding grooves arranged in a cross shape, for example, the boss moves in the transverse direction with respect to the positioning hole due to a molding error. Not only when the boss is displaced in the longitudinal direction but also in the longitudinal direction, the positioning hole can be securely fitted to the boss.
[0056]
According to the invention as set forth in claim 7, since the positioning holes are formed so as to be able to expand in all directions by a large number of diameter expanding grooves formed continuously in the circumferential direction, for example, the boss is formed in the positioning hole due to a molding error. Regardless of the direction in which the boss is displaced, the positioning hole can be securely fitted to the boss.
[0057]
What is important here is that each of the large diameter grooves is formed substantially continuously in the circumferential direction in a substantially V-shape, and triangular vertices are formed at small intervals in the circumferential direction between the large diameter grooves. Since a large number are formed and each of the triangular vertices is only in point-to-point contact with the outer peripheral surface of the boss, the work of fitting the positioning holes to the boss can be performed quickly and easily, and the boss is formed by each of the triangular vertices. The support can be reliably carried out from the entire circumference, so that the work of mounting components on the back surface of the front panel can be performed efficiently and accurately.
[0058]
According to the invention as set forth in claim 8, since the peripheral edge of the positioning hole is formed in a thin shape and can be elastically deformed, for example, when the outer diameter of each boss is larger than the inner diameter of each positioning hole due to a molding error. Even when the boss or the boss is displaced from the positioning hole, the peripheral edge of the positioning hole can be elastically deformed, and the positioning hole can be easily fitted to the boss.
[Brief description of the drawings]
FIG. 1 is a front view showing a loading switch fixing device of a disc player according to a first embodiment of the present invention;
FIG. 2 is a view as viewed in the direction of arrows AA in FIG. 1;
FIG. 3 is a rear view of the main part.
4A is an exploded perspective view of the essential part, FIG. 4B is a longitudinal sectional view of the disassembled state, and FIG. 4C is a rear view of a front panel and a push button substrate.
FIG. 5 is a front view showing a fixing device for a push button for a loading switch in a disc player according to a second embodiment of the present invention;
6A is an exploded perspective view of the essential part, FIG. 6B is a longitudinal sectional view of the disassembled state, and FIG. 6C is a rear view of a front panel and a push button substrate.
FIG. 7 is a front view showing a fixing device of a loading button for a loading switch in a disc player according to a third embodiment of the present invention;
8A is an exploded perspective view of the essential part, FIG. 8B is a longitudinal sectional view of the disassembled state, and FIG. 8C is a rear view of the front panel and the push button substrate.
FIG. 9 is a perspective view of a disc player.
FIG. 10 is a rear view of the front panel.
11 is a view taken in the direction of arrows BB in FIG. 10;
FIG. 12 is a front view showing a conventional example.
13 is a view as viewed in the direction of arrows CC in FIG. 12;
FIG. 14 is a rear view of the main part.
15A is an exploded perspective view of the essential part, FIG. 15B is a longitudinal sectional view of the disassembled state, and FIG. 15C is a rear view of the front panel and the push button substrate.
FIG. 16 is a perspective view showing a broken state of the boss.
[Explanation of symbols]
1 casing
2 Loading switch
3 push button (parts)
4 Drive indicator
5 Lens (parts)
6 Front panel
11 Substrate
13 Elastic arm
14 Positioning hole
14a Peripheral edge of positioning hole
15 Boss
15A Retaining head
17 push button hole
18 Lens hole
20 Grooving groove
21 recess
H hot press
Outer diameter of F boss
f Inner diameter of positioning hole

Claims

A synthetic resin front provided with a synthetic resin push button provided in front of a loading switch arranged in a casing of a disc player and a synthetic resin lens provided in front of a drive indicator light arranged in the casing on a front surface of the casing. A pair of positioning holes are fixedly provided at predetermined intervals on a substrate integrally formed on the push button with an elastic arm and a substrate integrally formed on the lens, respectively. Opposite to the positioning holes, bosses having the same diameter or slightly larger diameters as the respective positioning holes are protrudingly provided on the back surface of the front panel, and each boss is formed to have a slit so that each boss can be reduced in diameter. By fitting each positioning hole to each boss, the push button is inserted concentrically into the push button hole of the front panel, and the lens is An electric device which is concentrically inserted into a lens hole of a front panel, melts the tip of each of the bosses by hot pressing to form a retaining head, thereby fixing each of the substrates to the back surface of the front panel. In the fixing device for a component, a cylindrical boss is provided on the back surface of the front panel in place of the slit boss, and two enlarged grooves are formed on the inner peripheral surface of each of the positioning holes at intervals of 180 ° in the circumferential direction. Each positioning hole is formed so as to be capable of expanding in diameter, and a concave portion having a larger diameter than each positioning hole is formed concentrically with each of the positioning holes in each of the substrates, so that each of the positioning holes is formed. A fixing device for a component for electric equipment, wherein a peripheral portion of a positioning hole is formed in a thin shape.

A synthetic resin front provided with a synthetic resin push button provided in front of a loading switch arranged in a casing of a disc player and a synthetic resin lens provided in front of a drive indicator light arranged in the casing on a front surface of the casing. A pair of positioning holes are fixedly provided at predetermined intervals on a substrate integrally formed on the push button with an elastic arm and a substrate integrally formed on the lens, respectively. Opposite to the positioning holes, bosses having the same diameter or slightly larger diameters as the respective positioning holes are protrudingly provided on the back surface of the front panel, and each boss is formed to have a slit so that each boss can be reduced in diameter. By fitting each positioning hole to each boss, the push button is inserted concentrically into the push button hole of the front panel, and the lens is An electric device which is concentrically inserted into a lens hole of a front panel, melts the tip of each of the bosses by hot pressing to form a retaining head, thereby fixing each of the substrates to the back surface of the front panel. In the fixing device for parts, a cylindrical boss is provided on the back surface of the front panel in place of the slit boss, and four enlarged grooves are formed on the inner peripheral surface of each of the positioning holes at intervals of 90 ° in the circumferential direction. Each positioning hole is formed so as to be capable of expanding in diameter, and a concave portion having a larger diameter than each positioning hole is formed concentrically with each of the positioning holes in each of the substrates, so that each of the positioning holes is formed. A fixing device for a component for electric equipment, wherein a peripheral portion of a positioning hole is formed in a thin shape.

A synthetic resin front provided with a synthetic resin push button provided in front of a loading switch arranged in a casing of a disc player and a synthetic resin lens provided in front of a drive indicator light arranged in the casing on a front surface of the casing. A pair of positioning holes are fixedly provided at predetermined intervals on a substrate integrally formed on the push button with an elastic arm and a substrate integrally formed on the lens, respectively. Opposite to the positioning holes, bosses having the same diameter or slightly larger diameters as the respective positioning holes are protrudingly provided on the back surface of the front panel, and each boss is formed to have a slit so that each boss can be reduced in diameter. By fitting each positioning hole to each boss, the push button is inserted concentrically into the push button hole of the front panel, and the lens is An electric device which is concentrically inserted into a lens hole of a front panel, melts the tip of each of the bosses by hot pressing to form a retaining head, thereby fixing each of the substrates to the back surface of the front panel. In the fixing device for parts, a columnar boss is protruded from the back surface of the front panel in place of the slit boss, and a plurality of substantially V-shaped enlarged grooves are formed on the inner peripheral surface of each of the positioning holes in the circumferential direction. The peripheral portion of each positioning hole is formed in a thin shape by forming a concave portion having a diameter larger than that of each positioning hole in each of the substrates continuously and concentrically recessed with each of the positioning holes. A fixing device for a component for electric equipment, characterized in that:

A component disposed in a casing of the electric device is fixed to a back surface of a synthetic resin front panel provided on a front surface of the casing, and a pair of positioning holes are provided at predetermined intervals on a substrate integrally formed with the component. A cylindrical boss having the same diameter or a slightly larger diameter as each of the positioning holes protrudes from the back surface of the front panel so as to face each of the positioning holes, and a predetermined circumferential direction is formed on the inner peripheral surface of each of the positioning holes. The positioning holes are formed so as to be able to expand in diameter by forming a plurality of expanding grooves at intervals, and the components are positioned on the front panel by fitting the positioning holes into the bosses. Then, the tip of each of the bosses is melted by hot pressing to form a retaining head, whereby the substrate is fixed to the back surface of the front panel. Constant apparatus.

The device for fixing a component for an electric device according to claim 4, wherein two of the diameter-enlarging grooves are formed on the inner peripheral surface of each positioning hole at an interval of 180 ° in a circumferential direction.

The device for fixing a component for an electric device according to claim 4, wherein four of the diameter-enlarging grooves are formed on the inner peripheral surface of each positioning hole at 90 ° intervals in the circumferential direction.

The device for fixing an electric device component according to claim 4, wherein a large number of the diameter-enlarging grooves are formed in a substantially V shape and are continuously formed in a circumferential direction on an inner peripheral surface of each positioning hole. .

The peripheral portion of each positioning hole is formed in a thin shape by forming a concave portion having a diameter larger than that of each positioning hole on each of the substrates so as to be concentric with the respective positioning holes. 8. The device for fixing a component for electric equipment according to any one of 4 to 7.