JP4054723B2

JP4054723B2 - Speaker net mounting structure

Info

Publication number: JP4054723B2
Application number: JP2003178886A
Authority: JP
Inventors: 智宏岡田
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2003-06-24
Filing date: 2003-06-24
Publication date: 2008-03-05
Anticipated expiration: 2023-06-24
Also published as: JP2005020115A

Description

【０００１】
【発明の属する技術分野】
本発明は、パンチングメタル、エッチングメタル等からなるスピーカーネットを合成樹脂成形品からなるキャビネットに取り外しを可能に取り付けるスピーカーネットの取付構造に関する。
【０００２】
【従来の技術】
例えば、電子楽器や音響機器等のスピーカーを有する機器においては、金属製のスピーカーネットを、合成樹脂製の成形品である機器ケースに高周波溶着により取り付けるものがある。この種のネット取付構造では、高周波溶着によりスピーカーネットと機器ケースとを完全に固定することができるので、スピーカーの発音時の振動によってスピーカーネットと機器ケースとがガタついて雑音を発生することがない。しかし、このようなネット取付構造では、金属製のスピーカーネットと合成樹脂製の機器ケースとが完全に固定されてしまうため、スピーカーネットと機器ケースとを解体するときに、スピーカーネットと機器ケースとを分離することができず、資源の再利用上、好ましくないという問題がある。
このような問題を解決するために、従来は、金属製のスピーカーネットの周縁部の複数箇所に平板状の突起部を下方に突出させて設け、かつ合成樹脂製の機器ケースに各突起部が挿入するスリット状の取付孔をそれぞれ設け、これら取付孔にスピーカーネットの各突起部を上面側から差し込んで、各突起部の先端を機器ケースの下面側に突出させ、この突出した各先端をそれぞれ折り曲げて取付孔の縁部に係止させることにより、スピーカーネットを機器ケースに取り付ける構造のものがある。このようなネット取付構造では、折り曲げられた突起部の先端を元の状態に折り曲げて戻すことにより、スピーカーネットを機器ケースから容易に取り外すことができるので、資源の再利用上、好ましいが、スピーカーネットや機器ケースに衝撃などの外力による歪みなどのストレスが加わったり、あるいはスピーカーの発音時の振動が加わったりすると、突起部の先端の折り曲げが緩んでしまうことがあるため、スピーカーネットを常に機器ケースに確実に固定することができず、スピーカーネットが外れ易く、しかもスピーカーの発音時にスピーカーネットがガタついて雑音を発生するなどの問題がある。
これらの課題への対応として、高周波溶着をせずに、スピーカーネットを成形品に確実に固定でき、かつスピーカーネットと成形品とを容易に解体できるような提案として特許文献１などが開示されている。
【０００３】
特許文献１においては、金属製のスピーカーネットを合成樹脂製の成形品に取り付けるネット取付構造において、前記ネットの周縁部にはアンダーカット部を有する平板状の突起部が下方に突出して設けられ、前記成形品には、その上面から下面に向けて前記突起部が挿入してその先端が下方に突出するスリット状の取付孔が設けられていると共に、この取付孔の近傍には、前記取付孔に挿入されて突出した前記突起部の先端を捩じったときに、該先端部が摺動して乗り越える傾斜段差部が設けられていることで、ネットの突起部を成形品の取付孔に挿入し、その先端を下方に突出させると、突起部に設けられたアンダーカット部により突起部の先端を捩じることができ、この状態で突起部の先端を捩じると、その先端が傾斜段差部に沿って摺動して乗り越えることにより、ネットを成形品に締め付けると共に、突起部の先端が傾斜段差部の段差に係止され、このため、ネットや成形品にストレスが加わったり、あるいはスピーカー等の発音体の振動が加わっても突起部の先端の捩じれが緩むことがないので、従来例のような高周波溶着をせずに、ネットを成形品に確実に固定することができると共に、突起部の先端を元の状態に捩じって戻すことによりネットと成形品とを容易に解体することができる。
【０００４】
【特許文献１】
特開２０００−２０９２８９号公報
【０００５】
【発明が解決しようとする課題】
しかしながら、上述の特許文献１の場合、スピーカーネットを取り付ける際に、スピーカーネットの突起部を捩じる作業が必要であり、そのためには突起部が突出している成形品の下面側に作業スペースが必要となる。その結果、組立手順の面からみると、成形品の下面側に作業スペースがある段階でスピーカーネットを取り付けなければならないという組立手順上の制約が生じた。
そこで、本発明は、成形品の下面側の作業スペースを不要にして、成形品の上面側からの作業だけでスピーカーネットの取付を可能にするスピーカーネットの取付構造を提案することを目的とした。
【０００７】
【課題を解決するための手段】
上記課題を解決するために、本発明に係るスピーカーネットの取付構造は、スピーカーネットの周縁部に適間隔をおいて下方に突出して平板状に複数の脚部を形成し、該脚部の先端を外側にほぼ９０度折曲して平板状に足部を形成し、キャビネットに前記脚部および足部のみを下方に挿通させる形状であるとともに挿通後に脚部の周方向前方への適距離の移動を可能にする形状をした脚孔を形成し、前記キャビネットの前後する脚孔間の円周上に複数の透孔を形成し、前記スピーカーネットの外周部に嵌着される固定リングを有し、該固定リングの下面から下方に前記脚孔に脚部が挿入されて周方向前方へ足部が適距離移動した後の足部後方の空間に挿入される突起を突設し、前記固定リングの下面から下方に前記透孔に挿着されるとともに片面に前記透孔に係止される傾斜段差部を有する係止突起を突設し、前記スピーカーネットの脚部および足部を前記キャビネットの脚孔に挿入後、脚部を周方向前方へ適距離移動させてから、前記固定リングをスピーカーネットの外周部に嵌着させるとともに、前記突起を足部後方の空間に挿入しかつ前記係止突起を前記透孔に装着する。
【０００８】
本発明に係るスピーカーネットの取付構造は、スピーカーネットの周縁部に適間隔をおいて下方に突出して平板状に複数の脚部を形成し、該脚部の先端を外側にほぼ９０度折曲して平板状に足部を形成し、該足部の後部を斜め上方に折曲して踵部を形成し、キャビネットに前記脚部および足部のみを下方に挿通させる形状であるとともに挿通後に脚部の周方向前方への適距離の移動を可能にする形状をした脚孔を形成し、前記キャビネットの前後する脚孔間の円周上に複数の透孔を形成し、前記スピーカーネットの外周部に嵌着される固定リングを有し、該固定リングの下面から下方に前記脚孔に脚部が挿入されて周方向前方へ足部が適距離移動した後の踵部後方の空間に挿入される突起を突設し、前記固定リングの下面から下方に前記透孔に挿着されるとともに片面に前記透孔に係止される傾斜段差部を有する係止突起を突設し、前記スピーカーネットの脚部および足部を前記キャビネットの脚孔に挿入後、脚部を周方向前方へ適距離移動させてから、前記固定リングをスピーカーネットの外周部に嵌着させるとともに、前記突起を踵部後方の空間に挿入しかつ前記係止突起を前記透孔に装着する。
【０００９】
本発明に係るスピーカーネットの取付構造は、スピーカーネットの周縁部に適間隔をおいて下方に突出して平板状に複数の脚部を形成し、該脚部の先端を外側にほぼ９０度折曲して平板状に足部を形成し、キャビネットに前記脚部および足部のみを下方に挿通させる形状であるとともに挿通後に脚部の周方向前方への適距離の移動を可能にする形状をした脚孔を形成し、前記スピーカーネットの外周部に嵌着される固定リングを有し、該固定リングの下面から下方に前記脚孔に脚部が挿入されて周方向前方へ足部が適距離移動した後の足部後方の空間に挿入されるとともに片面に前記脚孔に係止される傾斜段差部を有する係止突起を突設し、前記スピーカーネットの脚部および足部を前記キャビネットの脚孔に挿入後、脚部を周方向前方へ適距離移動させてから、前記固定リングをスピーカーネットの外周部に嵌着させるとともに、前記係止突起を足部後方の空間に装着する。
【００１０】
本発明に係るスピーカーネットの取付構造は、スピーカーネットの周縁部に適間隔をおいて下方に突出して平板状に複数の脚部を形成し、該脚部の先端を外側にほぼ９０度折曲して平板状に足部を形成し、該足部の後部を斜め上方に折曲して踵部を形成し、キャビネットに前記脚部および足部のみを下方に挿通させる形状であるとともに挿通後に脚部の周方向前方への適距離の移動を可能にする形状をした脚孔を形成し、前記スピーカーネットの外周部に嵌着される固定リングを有し、該固定リングの下面から下方に前記脚孔に脚部が挿入されて周方向前方へ足部が適距離移動した後の踵部後方の空間に挿入されるとともに片面に前記脚孔に係止される傾斜段差部を有する係止突起を突設し、前記スピーカーネットの脚部および足部を前記キャビネットの脚孔に挿入後、脚部を周方向前方へ適距離移動させてから、前記固定リングをスピーカーネットの外周部に嵌着させるとともに、前記係止突起を踵部後方の空間に装着する。
【００１１】
なお、前記足部は、脚部本体よりも周方向前方または／および後方に突出して平板状に形成することが好ましい。
また、前記スピーカーネットの周縁部は、周方向に２Ｎ等分（Ｎは２以上の整数）し、２ピッチ毎に脚部を配設することが好ましい。
【００１２】
【発明の実施の形態】
以下、図に基づいて本発明の実施形態を説明する。
図１は本発明の実施形態で用いられるスピーカーネットの平面図であり、図２は図１の正面図である。図において、１はパンチングメタルまたはエッチングメタルからなるスピーカーネットであり、外周の円筒部の下端３箇所が下方に突出して、平板状の脚部２が形成されている。脚部２の下端は外方にほぼ９０度折曲されて足部３が形成されている。足部３は周方向前後に突出し、後端（図２の左方）の踵部４が斜め上方に折曲されている。
【００１３】
図３はスピーカーネット１が取り付けられるキャビネットの上面図であり、図４は図３のＡ−Ａ線断面図であり、図５は図４のＢ−Ｂ線断面図である。図において、合成樹脂製の成形品からなるキャビネット５の中央部には、スピーカー（図示せず）を取り付けるための孔６が形成され、その周囲には、スピーカーネット１を取り付けるための、一段低いリング状の溝７が形成され、その溝７上に１２０度ピッチで変形六角形の脚孔８が形成されている。この脚孔８は、スピーカーネット１の脚部２、足部３および後述する固定リング１１の突起１２が挿入されるものである。さらに、溝７上の前後する脚孔８の中間位置には、四角形の透孔９が形成されている。この透孔９は、後述する係止突起１３が挿入されるものである。
【００１４】
図６はスピーカーネット１の周囲に嵌着される固定リングの下面図であり、図７は図６のＣ−Ｃ線断面図である。図において、固定リング１１の下面には、１２０度ピッチで突起１２が突設されている。この突起１２は、キャビネット５の脚孔８部分に挿入されるものである。前後する突起１２の中間位置には、係止突起１３が突設されている。係止突起１３の外側には傾斜段差部１４が形成されている。この係止突起１３は、キャビネット５の透孔９に挿入されるものである。
【００１５】
次に、スピーカーネット１を固定リング１１を用いてキャビネット５に取り付ける手順について説明する。
図８はスピーカーネット１の脚部２および足部３をキャビネット５の脚孔８に挿入した状態を示す断面図であり、図９は図８のＤ−Ｄ線断面図である。図１０は図８の状態にさらに固定リング１１を装着した状態を示す断面図であり、図１１は図１０のＥ−Ｅ線断面図である。
先ず、スピーカーネット１をキャビネット５に取り付けるには、図８に示されるように、キャビネット５の脚孔８に、上方からスピーカーネット１の脚部２および足部３を挿入する。次いで、図９に示されるように、スピーカーネット１を反時計方向に回動して脚部２および足部３を前進させる。それにより、足部３は溝７の下側に進入した状態となる。
【００１６】
次に、図１０および図１１に示されるように、固定リング１１を上方から下降させ、スピーカーネット１の外周部に嵌着させながら、突起１２を脚孔８内の踵部４の後方の空間に挿入する。それにより、足部３は踵部４が突起１２に当接していることで後退不能となり、スピーカーネット１全体が回動不能にキャビネット５に支持されることになる。同時に、係止突起１３を透孔９に挿入して、係止突起１３の外側の傾斜段差部１４を透孔９の外側の壁面を摺動させて、透孔９を乗り越えさせる。傾斜段差部１４が透孔９を乗り越えると、傾斜段差部１４が透孔９の下端部に係止されて、固定リング１１が抜き取り不能にキャビネット５に支持されることになり、併せて、スピーカーネット１もキャビネット５に固定される。これら一連の取り付け作業は、キャビネット５の前面で実行されるため、キャビネット５の裏側にスペースがない場合でも作業可能となる。
【００１７】
なお、スピーカーネット１およびキャビネット５の使用寿命が尽きて、廃棄する場合は、キャビネット５の裏面から係止突起１３の傾斜段差部１４の透孔９との係合を解除してやれば、固定リング１１が抜き取り可能となる。次に、固定リング１１を除去すると、スピーカーネット１が時計方向に回動可能となり、足部３が脚孔８から抜き取り可能となる。次に、スピーカーネット１をキャビネット５から抜き取ることで、それらを分別してリサイクル可能となる。
【００１８】
なお、図示例はスピーカーネット１の外周部を６等分して２ピッチごとに脚部２を配置しその中間に係止突起１３を配置したが、他に４等分、８等分、１０等分して脚部２と係止突起１３を交互に配置することも可能である。
また、図示例では踵部４を斜め上方に折曲しているが、折曲せずに足部３と同一平面のままとすることができる。その場合が請求項１および３の構成となる。さらに、図示例は突起１２に係止突起１３を別々に設けていたが、突起１２に係止突起１３を兼ねさせる構成とすることも可能である。その場合は、脚孔８を貫通孔にするとともに、突起１２の側面に傾斜段差部を形成しておいて、突起１２を脚孔８に係止させるものとする。その構成が請求項３および４の発明となる。
【００１９】
なお、上述の実施形態では、スピーカーネットとしてパンチングメタルまたはエッチングメタルからなる金属製のものを用いていたが、他に樹脂製ネットや樹脂製ネットに布製ネットを組み合わせた構造のスピーカーネットを用いることが可能である。樹脂製ネットを用いた場合は、溶着不要で、色展開や微細孔の径／パターンの展開が容易で、異なる材料を使用しても分解がしやすい。また、部品単品不良があっても交換が容易である。樹脂製ネットに布製ネットを組み合わせた場合は、色展開や音のぬけ（開口率アップ）を良くすることが容易である。図１２は、樹脂製ネットに布製ネットを組み合わせたスピーカーネットの分解斜視図である。樹脂製ネット２１の上に布製ネット２２を被せて接着し一体化している。この場合のキャビネットおよび固定リングは、上述の実施形態と同一である。
【００２０】
【発明の効果】
以上述べたように本発明によれば、スピーカーネットの脚部および足部をキャビネットの脚孔に挿入後、脚部を周方向前方へ適距離移動させてから、固定リングを装着することで、スピーカーネットがキャビネットに固定される。
このように、本発明では、キャビネットの前面側の操作のみで、スピーカーネットの取り付けが可能となることで、キャビネットの背面での作業スペースが不要となり、スピーカーネットの取り付けの組立手順上の制約が解消される。
なお、スピーカーネットおよびキャビネットを廃棄する場合は、キャビネットの背面でキャビネットに対する固定リングの係止を機械的に解除してやれば分解が可能となり、資源リサイクルが可能となる。
【図面の簡単な説明】
【図１】本発明の実施形態で用いられるスピーカーネットの平面図である。
【図２】図１の正面図である。
【図３】スピーカーネットが取り付けられるキャビネットの上面図である。
【図４】図３のＡ−Ａ線断面図である。
【図５】図４のＢ−Ｂ線断面図である。
【図６】スピーカーネットの周囲に嵌着される固定リングの下面図である。
【図７】図６のＣ−Ｃ線断面図である。
【図８】スピーカーネットをキャビネット挿入した状態を示す断面図である。
【図９】図８のＤ−Ｄ線断面図である。
【図１０】図８の状態にさらに固定リングを装着した状態を示す断面図である。
【図１１】図１０のＥ−Ｅ線断面図である。
【図１２】他のスピーカーネットの分解斜視図である。
【符号の説明】
１スピーカーネット
２脚部
３足部
４踵部
５キャビネット
６孔
７溝
８脚孔
９透孔
１１固定リング
１２突起
１３係止突起
１４傾斜段差部
２１樹脂製ネット
２２布製ネット[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a speaker net mounting structure in which a speaker net made of punching metal, etching metal or the like is detachably attached to a cabinet made of a synthetic resin molded product.
[0002]
[Prior art]
For example, in a device having a speaker such as an electronic musical instrument or an audio device, there is a device in which a metal speaker net is attached to a device case which is a synthetic resin molded product by high-frequency welding. In this type of net mounting structure, the speaker net and the device case can be completely fixed by high frequency welding, so that the speaker net and the device case do not rattle due to vibration during sound generation of the speaker. . However, in such a net mounting structure, the metal speaker net and the synthetic resin device case are completely fixed, so when disassembling the speaker net and the device case, Cannot be separated, which is undesirable in terms of resource reuse.
In order to solve such a problem, conventionally, flat projections are provided to project downward at a plurality of positions on the peripheral portion of a metal speaker net, and each projection is provided on a synthetic resin device case. Slit-shaped mounting holes are provided for insertion, and the projections of the speaker net are inserted into the mounting holes from the upper surface side so that the tips of the projections protrude to the lower surface side of the device case. There is a structure in which a speaker net is attached to a device case by being bent and locked to an edge of an attachment hole. In such a net mounting structure, the speaker net can be easily removed from the device case by folding the tip of the bent projection back to its original state, which is preferable in terms of resource reuse. If stress such as distortion due to external force such as impact is applied to the net or equipment case, or vibration during speaker production is applied, the bending of the tip of the protrusion may be loosened, so the speaker net is always connected to the equipment. There is a problem that the speaker net cannot be securely fixed to the case, the speaker net is likely to come off, and the speaker net is rattled during sound generation of the speaker, generating noise.
As a countermeasure to these problems, Patent Document 1 and the like have been disclosed as a proposal that can securely fix the speaker net to the molded product without performing high-frequency welding and can easily disassemble the speaker net and the molded product. Yes.
[0003]
In Patent Document 1, in a net mounting structure in which a metal speaker net is attached to a synthetic resin molded product, a flat projection having an undercut portion is provided projecting downward on the periphery of the net. The molded product is provided with a slit-like mounting hole in which the protrusion is inserted from the upper surface to the lower surface and the tip protrudes downward, and in the vicinity of the mounting hole, the mounting hole When the tip of the protruding portion inserted and protruded is twisted, an inclined stepped portion that the tip end slides over is provided, so that the protruding portion of the net can be used as a mounting hole of the molded product. When inserted and projecting the tip downward, the tip of the projection can be twisted by the undercut portion provided in the projection, and when the tip of the projection is twisted in this state, the tip is Along the inclined step By moving over and tightening, the net is fastened to the molded product, and the tip of the projection is locked to the step of the inclined stepped portion, so that stress is applied to the net and the molded product, or the sounding body such as a speaker is used. Since the twist of the tip of the protrusion does not loosen even if vibration is applied, the net can be securely fixed to the molded product without high-frequency welding as in the conventional example, and the tip of the protrusion is the original. The net and the molded product can be easily disassembled by twisting them back into the state.
[0004]
[Patent Document 1]
JP 2000-209289 A
[Problems to be solved by the invention]
However, in the case of the above-mentioned Patent Document 1, when attaching the speaker net, it is necessary to twist the protrusion of the speaker net. For this purpose, there is a work space on the lower surface side of the molded product from which the protrusion protrudes. Necessary. As a result, in terms of the assembly procedure, there was a restriction on the assembly procedure that the speaker net had to be attached when there was a working space on the lower surface side of the molded product.
Therefore, the present invention has an object of proposing a speaker net mounting structure that eliminates the work space on the lower surface side of the molded product and enables the speaker net to be mounted only by work from the upper surface side of the molded product. .
[0007]
[Means for Solving the Problems]
In order to solve the above-described problems, a speaker net mounting structure according to the present invention has a speaker net that protrudes downward at an appropriate interval from the periphery of the speaker net to form a plurality of legs, and the tips of the legs. Is bent 90 degrees outward to form a flat foot, and only the leg and the foot are inserted downward into the cabinet. A leg hole having a shape that allows movement is formed, a plurality of through holes are formed on the circumference between the front and rear leg holes of the cabinet, and a fixing ring that is fitted to the outer periphery of the speaker net is provided. A protrusion inserted into the space behind the foot after the leg is inserted into the leg hole downwardly from the lower surface of the fixing ring and the foot moves an appropriate distance forward in the circumferential direction. While being inserted into the through hole downward from the lower surface of the ring A locking projection having an inclined stepped portion that is locked to the through-hole is projected on the surface, and the leg portion and the foot portion of the speaker net are inserted into the leg hole of the cabinet, and then the leg portion is fitted forward in the circumferential direction. After moving the distance, the fixing ring is fitted to the outer periphery of the speaker net, the protrusion is inserted into the space behind the foot, and the locking protrusion is attached to the through hole.
[0008]
The speaker net mounting structure according to the present invention has a plurality of legs that protrude downward at an appropriate interval from the periphery of the speaker net to form a plurality of legs, and the ends of the legs are bent approximately 90 degrees outward. The foot is formed in a flat plate shape, the rear portion of the foot is bent obliquely upward to form a heel portion, and only the leg portion and the foot portion are inserted downward into the cabinet. A leg hole having a shape that enables movement of a leg portion in the circumferential direction forward is formed, and a plurality of through holes are formed on the circumference between the leg holes on the front and rear of the cabinet. In the space behind the buttocks after the leg portion is inserted into the leg hole downward from the lower surface of the fixing ring and the foot portion moves an appropriate distance forward in the circumferential direction. Projecting projections to be inserted, and downward through the bottom surface of the fixing ring A locking projection having an inclined stepped portion that is inserted and attached to the through hole is provided on one side, and the leg portion and the foot portion of the speaker net are inserted into the leg hole of the cabinet, and then the leg portion is inserted. After moving a suitable distance forward in the circumferential direction, the fixing ring is fitted to the outer periphery of the speaker net, the protrusion is inserted into the space behind the buttock, and the locking protrusion is attached to the through hole.
[0009]
The speaker net mounting structure according to the present invention has a plurality of legs that protrude downward at an appropriate interval from the periphery of the speaker net to form a plurality of legs, and the ends of the legs are bent approximately 90 degrees outward. Then, the legs are formed in a flat plate shape, and the shape is such that only the legs and the feet are inserted downward into the cabinet, and the legs are configured to allow a suitable distance to move forward in the circumferential direction after insertion. A leg hole is formed and a fixing ring is fitted to the outer periphery of the speaker net. The leg is inserted into the leg hole downward from the lower surface of the fixing ring so that the leg is an appropriate distance forward in the circumferential direction. A locking projection having an inclined stepped portion that is inserted into the space behind the foot after movement and is locked to the leg hole is provided on one side, and the leg and foot of the speaker net are connected to the cabinet. After inserting into the leg hole, fit the leg forward in the circumferential direction Were allowed to release moving, causes fitted the fixed ring to the outer periphery of the speaker net, mounting the locking projection in the space of the foot rear.
[0010]
The speaker net mounting structure according to the present invention has a plurality of legs that protrude downward at an appropriate interval from the periphery of the speaker net to form a plurality of legs, and the ends of the legs are bent approximately 90 degrees outward. The foot is formed in a flat plate shape, the rear portion of the foot is bent obliquely upward to form a heel portion, and only the leg portion and the foot portion are inserted downward into the cabinet. A leg hole having a shape that allows the leg portion to move an appropriate distance forward in the circumferential direction is formed, and has a fixing ring that is fitted to the outer peripheral portion of the speaker net, and downward from the lower surface of the fixing ring. Locking with an inclined stepped portion that is inserted into the space behind the buttocks after the leg portion is inserted into the leg hole and the foot portion has moved an appropriate distance forward in the circumferential direction, and locked to the leg hole on one side. Projections are provided so that the legs and feet of the speaker net are After being inserted into the leg hole of the vignette, the leg is moved forward by a suitable distance in the circumferential direction, and then the fixing ring is fitted to the outer circumference of the speaker net, and the locking projection is attached to the space behind the buttock. .
[0011]
In addition, it is preferable that the said leg part protrudes in the circumferential direction front and / or back rather than the leg part main body, and is formed in flat form.
Moreover, it is preferable that the peripheral part of the speaker net is equally divided into 2N in the circumferential direction (N is an integer of 2 or more) , and a leg part is provided every two pitches.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a speaker net used in the embodiment of the present invention, and FIG. 2 is a front view of FIG. In the figure, reference numeral 1 denotes a speaker net made of punching metal or etching metal, and three lower ends of the outer peripheral cylindrical portion protrude downward to form a flat leg portion 2. The lower end of the leg portion 2 is bent almost 90 degrees outward to form a foot portion 3. The foot portion 3 projects in the circumferential direction, and the heel portion 4 at the rear end (left side in FIG. 2) is bent obliquely upward.
[0013]
3 is a top view of the cabinet to which the speaker net 1 is attached, FIG. 4 is a cross-sectional view taken along line AA in FIG. 3, and FIG. 5 is a cross-sectional view taken along line BB in FIG. In the figure, a hole 6 for attaching a speaker (not shown) is formed in the central portion of a cabinet 5 made of a synthetic resin molded product, and around it, it is one step lower for attaching a speaker net 1. A ring-shaped groove 7 is formed, and deformed hexagonal leg holes 8 are formed on the groove 7 at a pitch of 120 degrees. This leg hole 8 is for inserting the leg 2 and foot 3 of the speaker net 1 and the projection 12 of the fixing ring 11 described later. Further, a rectangular through hole 9 is formed at an intermediate position between the front and rear leg holes 8 on the groove 7. The through-hole 9 is for inserting a locking projection 13 described later.
[0014]
6 is a bottom view of a fixing ring fitted around the speaker net 1, and FIG. 7 is a cross-sectional view taken along the line CC in FIG. In the figure, protrusions 12 are projected on the lower surface of the fixing ring 11 at a pitch of 120 degrees. The protrusion 12 is inserted into the leg hole 8 portion of the cabinet 5. A locking projection 13 is projected from an intermediate position between the front and rear projections 12. An inclined stepped portion 14 is formed outside the locking projection 13. The locking projection 13 is inserted into the through hole 9 of the cabinet 5.
[0015]
Next, a procedure for attaching the speaker net 1 to the cabinet 5 using the fixing ring 11 will be described.
8 is a cross-sectional view showing a state in which the leg 2 and the foot 3 of the speaker net 1 are inserted into the leg holes 8 of the cabinet 5, and FIG. 9 is a cross-sectional view taken along the line DD of FIG. 10 is a cross-sectional view showing a state in which the fixing ring 11 is further attached to the state of FIG. 8, and FIG. 11 is a cross-sectional view taken along the line EE of FIG.
First, to attach the speaker net 1 to the cabinet 5, as shown in FIG. 8, the leg portion 2 and the foot portion 3 of the speaker net 1 are inserted into the leg holes 8 of the cabinet 5 from above. Next, as shown in FIG. 9, the speaker net 1 is rotated counterclockwise to advance the leg portion 2 and the foot portion 3. As a result, the foot 3 enters a state below the groove 7.
[0016]
Next, as shown in FIGS. 10 and 11, while the fixing ring 11 is lowered from above and fitted to the outer periphery of the speaker net 1, the space behind the flange 4 in the leg hole 8 is inserted into the protrusion 12. Insert into. As a result, the foot portion 3 cannot be retracted because the heel portion 4 is in contact with the projection 12, and the entire speaker net 1 is supported by the cabinet 5 so as not to rotate. At the same time, the locking projection 13 is inserted into the through hole 9, and the inclined stepped portion 14 outside the locking projection 13 is slid on the outer wall surface of the through hole 9 to get over the through hole 9. When the inclined step portion 14 gets over the through-hole 9, the inclined step portion 14 is locked to the lower end portion of the through-hole 9, and the fixing ring 11 is supported by the cabinet 5 so that it cannot be pulled out. The net 1 is also fixed to the cabinet 5. Since a series of these mounting operations are performed on the front surface of the cabinet 5, the operations can be performed even when there is no space on the back side of the cabinet 5.
[0017]
When the service life of the speaker net 1 and the cabinet 5 is exhausted and discarded, if the engagement with the through hole 9 of the inclined step portion 14 of the locking projection 13 is released from the rear surface of the cabinet 5, the fixing ring 11 Can be extracted. Next, when the fixing ring 11 is removed, the speaker net 1 can be rotated in the clockwise direction, and the foot 3 can be removed from the leg hole 8. Next, by removing the speaker net 1 from the cabinet 5, they can be separated and recycled.
[0018]
In the illustrated example, the outer periphery of the speaker net 1 is divided into six equal parts, and the leg parts 2 are arranged every two pitches, and the locking projections 13 are arranged in the middle. It is also possible to arrange the leg portions 2 and the locking projections 13 alternately by equally dividing.
Moreover, although the heel part 4 is bent diagonally upward in the illustrated example, it can be kept in the same plane as the foot part 3 without being bent. In that case, the configuration of claims 1 and 3 is obtained. Further, in the illustrated example, the locking protrusions 13 are separately provided on the protrusions 12, but it is also possible to adopt a configuration in which the protrusions 12 also serve as the locking protrusions 13. In this case, the leg hole 8 is a through hole, and an inclined step portion is formed on the side surface of the protrusion 12 so that the protrusion 12 is locked to the leg hole 8. This configuration is the invention of claims 3 and 4.
[0019]
In the above-described embodiment, a metal made of punching metal or etching metal is used as the speaker net. However, a speaker net having a structure in which a cloth net is combined with a resin net or a resin net is used. Is possible. When a resin net is used, welding is not required, color development and micropore diameter / pattern development are easy, and even if different materials are used, decomposition is easy. Moreover, even if there is a defective part, it is easy to replace. When a cloth net is combined with a resin net, it is easy to improve color development and sound removal (up the aperture ratio). FIG. 12 is an exploded perspective view of a speaker net in which a cloth net is combined with a resin net. A cloth net 22 is put on a resin net 21 and bonded and integrated. The cabinet and fixing ring in this case are the same as those in the above-described embodiment.
[0020]
【The invention's effect】
As described above, according to the present invention, after inserting the leg portion and the foot portion of the speaker net into the leg hole of the cabinet, the leg portion is moved an appropriate distance forward in the circumferential direction, and then the fixing ring is attached. The speaker net is fixed to the cabinet.
As described above, in the present invention, the speaker net can be attached only by the operation on the front side of the cabinet, so that the work space on the rear side of the cabinet becomes unnecessary, and there is a restriction on the assembly procedure of the speaker net attachment. It will be resolved.
When the speaker net and the cabinet are discarded, if the locking of the fixing ring to the cabinet is mechanically released on the back of the cabinet, the speaker net and the cabinet can be disassembled and resource recycling can be performed.
[Brief description of the drawings]
FIG. 1 is a plan view of a speaker net used in an embodiment of the present invention.
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a top view of a cabinet to which a speaker net is attached.
4 is a cross-sectional view taken along line AA in FIG.
5 is a cross-sectional view taken along line BB in FIG.
FIG. 6 is a bottom view of a fixing ring fitted around a speaker net.
7 is a cross-sectional view taken along line CC in FIG.
FIG. 8 is a cross-sectional view showing a state in which a speaker net is inserted into a cabinet.
9 is a cross-sectional view taken along the line DD of FIG.
10 is a cross-sectional view showing a state where a fixing ring is further attached to the state of FIG.
11 is a cross-sectional view taken along the line EE of FIG.
FIG. 12 is an exploded perspective view of another speaker net.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Speaker net 2 Leg part 3 Foot part 4 Gutter part 5 Cabinet 6 Hole 7 Groove 8 Leg hole 9 Through-hole 11 Fixing ring 12 Protrusion 13 Locking protrusion 14 Inclination step part 21 Resin net 22 Cloth net

Claims

In the speaker net mounting structure that attaches the speaker net to the cabinet,
A plurality of legs formed in a flat plate shape projecting downward at an appropriate interval to the periphery of the speaker net;
A leg formed in a flat plate shape by bending the tip of the leg outward approximately 90 degrees;
A leg hole that is formed in the cabinet and has a shape that allows only the leg portion and the foot portion to be inserted downward, and a shape that enables movement of the leg portion to the front in the circumferential direction after insertion; and
A plurality of through-holes formed on the circumference between the front and rear leg holes of the cabinet;
A fixing ring fitted to the outer periphery of the speaker net;
A protrusion that protrudes downward from the lower surface of the fixing ring and is inserted into the space behind the foot after the leg is inserted into the leg hole and the foot is moved a proper distance forward in the circumferential direction;
A locking projection that protrudes downward from the lower surface of the fixing ring and is inserted into the through hole and has an inclined stepped portion that is locked to the through hole on one side;
And after inserting the leg portion and the foot portion of the speaker net into the leg hole of the cabinet, the leg portion is moved a proper distance forward in the circumferential direction, and then the fixing ring is fitted to the outer peripheral portion of the speaker net. A speaker net mounting structure , wherein the protrusion is inserted into a space behind the foot and the locking protrusion is attached to the through hole .

In the speaker net mounting structure that attaches the speaker net to the cabinet,
A plurality of legs formed in a flat plate shape projecting downward at an appropriate interval to the periphery of the speaker net;
A leg formed in a flat plate shape by bending the tip of the leg outward approximately 90 degrees;
A buttock formed by bending the rear part of the foot part diagonally upward;
A leg hole that is formed in the cabinet and has a shape that allows only the leg portion and the foot portion to be inserted downward, and a shape that enables movement of the leg portion to the front in the circumferential direction after insertion; and
A plurality of through-holes formed on the circumference between the front and rear leg holes of the cabinet;
A fixing ring fitted to the outer periphery of the speaker net;
A protrusion that projects downward from the lower surface of the fixing ring and is inserted into the space behind the hip after the leg is inserted into the leg hole and the foot is moved a suitable distance forward in the circumferential direction;
A locking projection that protrudes downward from the lower surface of the fixing ring and is inserted into the through hole and has an inclined stepped portion that is locked to the through hole on one side;
And after inserting the leg portion and the foot portion of the speaker net into the leg hole of the cabinet, the leg portion is moved a proper distance forward in the circumferential direction, and then the fixing ring is fitted to the outer peripheral portion of the speaker net. A speaker net mounting structure , wherein the protrusion is inserted into a space behind the collar and the locking protrusion is attached to the through hole .

In the speaker net mounting structure that attaches the speaker net to the cabinet,
A plurality of legs formed in a flat plate shape projecting downward at an appropriate interval to the periphery of the speaker net;
A leg formed in a flat plate shape by bending the tip of the leg outward approximately 90 degrees;
A leg hole that is formed in the cabinet and has a shape that allows only the leg portion and the foot portion to be inserted downward, and a shape that enables movement of the leg portion to the front in the circumferential direction after insertion; and
A fixing ring fitted to the outer periphery of the speaker net;
Projecting downward from the lower surface of the fixing ring, the leg is inserted into the leg hole, and inserted into the space behind the foot after the leg has moved an appropriate distance forward in the circumferential direction. A locking projection having an inclined step portion to be locked;
And after inserting the leg portion and the foot portion of the speaker net into the leg hole of the cabinet, the leg portion is moved a proper distance forward in the circumferential direction, and then the fixing ring is fitted to the outer peripheral portion of the speaker net. A mounting structure for a speaker net , wherein the locking projection is mounted in a space behind the foot .

In the speaker net mounting structure that attaches the speaker net to a synthetic resin cabinet,
A plurality of legs formed in a flat plate shape projecting downward at an appropriate interval to the periphery of the speaker net;
A leg formed in a flat plate shape by bending the tip of the leg outward approximately 90 degrees;
A buttock formed by bending the rear part of the foot part diagonally upward;
A leg hole that is formed in the cabinet and has a shape that allows only the leg portion and the foot portion to be inserted downward, and a shape that enables movement of the leg portion to the front in the circumferential direction after insertion; and
A fixing ring fitted to the outer periphery of the speaker net;
Projecting downward from the lower surface of the fixing ring, the leg portion is inserted into the leg hole, and inserted into the space behind the hip after the leg portion has moved an appropriate distance forward in the circumferential direction. A locking projection having an inclined step portion to be locked;
And after inserting the leg portion and the foot portion of the speaker net into the leg hole of the cabinet, the leg portion is moved a proper distance forward in the circumferential direction, and then the fixing ring is fitted to the outer peripheral portion of the speaker net. A mounting structure for a speaker net , wherein the locking projection is mounted in a space behind the buttock .

In the speaker net mounting structure according to any one of claims 1 to 4,
A speaker net mounting structure, wherein the foot portion is formed in a flat plate shape so as to protrude forward and / or backward in the circumferential direction from the leg main body .

In the speaker net mounting structure according to any one of claims 1 to 5,
2. A speaker net mounting structure, wherein a peripheral portion of the speaker net is equally divided into 2N in the circumferential direction (N is an integer of 2 or more), and a leg portion is provided every two pitches .