JP2004016488A

JP2004016488A - Mask with headband

Info

Publication number: JP2004016488A
Application number: JP2002175862A
Authority: JP
Inventors: Masayuki Ono; 大野　昌之
Original assignee: Koken Co Ltd
Current assignee: Koken Co Ltd
Priority date: 2002-06-17
Filing date: 2002-06-17
Publication date: 2004-01-22
Anticipated expiration: 2022-06-17
Also published as: JP3840509B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mask with a headband having a length-adjusting ring allowing quickly fastening the headband when bringing a face body into close contact with a user's face, while an extra part not getting in the way. <P>SOLUTION: The headband of the mask with the headband has a first band 22 and the length-adjusting ring 23. The length-adjusting ring 23 has first and second side edges 23a, 23b, first and second end edges 23c, 23d, and a center post 23e. First and second band holes 27a, 27b are defined by these edges. The length-adjusting ring 23 is slidably attached to the first band 22 by passing the first band 22 through each band hole across the center post 23e. The end of the first band 22 extending from the first band hole 27a is movably passed through a band hole in the surface body 11, or the like, and folded back. The end of this folded portion is substantially non-removably linked to the length-adjusting ring 23. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明はヘッドバンド付きマスクに関し、更に詳細には粉塵用や防毒用として使用するのに好適なヘッドバンド付きマスクに関する。
【０００２】
【従来の技術】
防塵、防毒マスクには、面体を顔面に密着させて使用するためにヘッドバンドが装備されている。このヘッドバンドは、着用者の頭や首まわりに掛け回すためそれらの大きさに合わせて長さを調整し得るような構造となっている。例えば、従来、この種のマスクにおけるヘッドバンドの長さ調整は、図１３に示されるように面体又は相互に接続しようとする相手側のバンドに取り付けたバンド通し環１を用いて行われていた。
【０００３】
このバンド通し環１は、バンド２が通る開口部３を有する板状体４を備えている。この板状体４には、開口部３の直上、即ち開口部３を形成している一平面から外れた板状体４の一表面側にバンド掛け回し用の軸５が設けられている。言い換えれば、バンド掛け回し用の軸５は、板状体４の一表面側に設けられ、バンド挿通用の開口部３は板状体４における軸５の真下に位置する部位に形成されている。
【０００４】
このバンド通し環１を用いてバンド２の長さを調整する場合には、バンド２の一端側を板状体４の開口部３に通して軸５に掛け回し、再び板状体４の開口部３を通して折り返す。このようにバンド通し環１を介して折り返されたバンド２の一端部側が余剰部２ａとなり、この余剰部２ａはこのバンド通し環１に向かって延びるバンド２と共に環状部材６に通されて束ねられる。
【０００５】
また、バンド２の長さを調整する別な従来例としては、図１４に示されるように、並列して形成された２つの開口部７ａ、７ｂを有するバンド通し７が知られている。この使用方法としては、バンド２を一方の開口部７ａに通し、次いで開口部７ａ、７ｂ間の桟部分７ｃを跨いで他方の開口部７ｂに通す。バンド２とバンド通し７とは互いに摺動可能な状態にある。
【０００６】
更に具体的には、バンド通し７の開口部７ｂから出たバンド２の一端側は、例えば面体に設けられたバンド挿通孔８に通されて折り返される。このバンド挿通孔８を通って折り返されたバンド２の一端部側が余剰部２ａとなり、この余剰部２ａの先端部は、バンド通し７の２つの開口部７ａ、７ｂに既に通されているバンド２に重なるように各開口部７ａ、７ｂに通されている。
【０００７】
【発明が解決しようとする課題】
このように、従来のマスクでは、ヘッドバンドの長さを調整したときに余剰部２ａとなるバンドの一端側が着用者にとって邪魔になるため実質的に締め付け作用をしているバンドに環状部材６やバンド通し７を用いて束ねていた。しかし、それでもなお余剰部２ａの先端部は、環状部材６等から飛び出して自由に動ける状態となることが多く、着用者にとってはその先端部が非常に邪魔であった。
【０００８】
余剰部２ａの先端部をそのような状態にしないように、バンドの長さ調整を行う度に環状部材６等を移動させて余剰部２ａの端部を束ねることは非常に煩わしく、しかもそのようにしてしまうと、着用後に締め付け直しをする場合に、今度は余剰部２ａの端部が掴み難くなってしまう。このように、従来のマスクには面体を顔面に密着させるまでの操作が面倒であり、迅速にできない、という問題があった。
【０００９】
本発明の目的は、かかる従来の問題点を解決するためになされたもので、余剰部が邪魔になることなく、しかも面体を顔面に密着させる際のヘッドバンドの締め付け操作を迅速に行うことができる長さ調整環を備えるヘッドバンド付きマスクを提供することにある。
【００１０】
【課題を解決するための手段】
本発明はヘッドバンド付きマスクに関し、前述した従来技術の問題を解決するために以下のように構成されている。すなわち、本発明は、着用者の顔面に密着可能とされかつ吸気と排気が可能な面体と、面体を顔面に密着させるヘッドバンドとを備えるヘッドバンド付きマスクにおいて、ヘッドバンドが、バンドと、このバンドの長さを調整する少なくとも１つの長さ調整環とを有し、長さ調整環は、バンドの両側部に沿って互いに並行して延びる第１、第２側縁部と、バンドを横断して第１、第２側縁部の端部どうしをつなぎバンドの長さ方向において互いに対向する第１、第２端縁部と、これら第１、第２端縁部間をバンドの長さ方向に２分するように第１、第２側縁部間に延びる中央支柱部とを有し、各側縁部と第１端縁部と中央支柱部とが第１バンド通し孔を画成し、各側縁部と第２端縁部と中央支柱部とが第２バンド通し孔を画成し、バンドは、長さ調整環の中央支柱部を跨いで第２バンド通し孔から第１バンド通し孔を摺動自在に通過しており、第１バンド通し孔から出たバンドの端部は、ヘッドバンド付きマスクにおいて長さ調整環とは別体の部分に形成されたバンド挿通孔に摺動可能に通されて折り返され、この折り返し部の端部が長さ調整環に実質的に取り外し不能につながれていることを特徴とする。
【００１１】
本発明のヘッドバンド付きマスクは、前述した特徴を有するが、更に以下のような特徴も有する。すなわち、折り返し部の端部は、第１端縁部と中央支柱部とのいずれかに、掛け回わされ、重なり合う前記端部どおしを一体化することにより実質的に取り外し不能につながれていることを特徴とする。
【００１２】
また、本発明のヘッドバンド付きマスクでは、長さ調整環が、第１端縁部を境に前記第１バンド通し孔とは反端側に形成された、バンドを挿通可能な第３バンド通し孔を備え、折り返し部の端部が、第１端縁部に掛け回した後に第３バンド通し孔に通され、その通された端部を折り重ねて一体化することにより端部が、第３バンド通し孔から抜け出ないようにされて、長さ調整環に実質的に取り外し不能につながれていることを特徴とする。
【００１３】
また、本発明のヘッドバンド付きマスクにおいて、第１バンド通し孔を画成している第１端縁部と中央支柱部との間隔が、第２バンド通し孔を画成している第２端縁部と中央支柱部との間隔より狭くされていることを特徴とする。
【００１４】
【発明の実施の形態】
以下、本発明のヘッドバンド付きマスクを図に示される実施形態に基づいて更に詳細に説明する。図１には本発明の一実施形態に係るヘッドバンド付きマスク１０が示され、図２にはヘッドバンド付きマスク１０の着用状態が示されている。このヘッドバンド付きマスク１０は、面体１１と、このヘッドバンド付きマスク１０の着用者１２の顔面に面体１１を密着させるための長さ調節可能なヘッドバンド１３とを有する。
【００１５】
面体１１は、着用者１２の顔面に密着して口許と鼻孔の周辺とを覆う、柔軟弾性材料で形成された覆い体１４を備え、この覆い体１４には、フィルタ取付け部が設けられ、このフィルタ取付け部には吸気を濾過するフィルタ１５が交換可能に取り付けられている。この覆い体１４の前面には、ヘッドバンド１３を面体１１に接続するヘッドバンド取付け板（以下、取付け板と称する）１６が留め具１６ａによって取り付けられている。
【００１６】
このヘッドバンド取付け板１６は、４つの接続アーム１７、１７、１８、１８を備える十字型をしたもので、２つの接続アーム１７は、覆い体１４を正面から見てそれぞれ左右斜め上方に延び、また他の２つの接続アーム１８は左右斜め下方に延びている。このようなヘッドバンド付きマスク１０は防塵用としても、或いは防毒用としても使用することができ、その用途に応じてフィルタの種類を選択する。
【００１７】
ヘッドバンド１３は、柔軟な材料から形成され、着用者１２の後頭部１２ａに当てることができるような形状をした環状部材１９と、この環状部材１９から取付け板１６の各接続アーム１７に延びた２つの第１バンド部材２０と、取付け板１６の各接続アーム１８からそれぞれ延び、着用者１２の頸部１２ｂに掛け回される一対の第２バンド部材２１とを有する。図１に示されるヘッドバンド付きマスク１０において、第１バンド部材２０は第１バンド２２に長さ調整環２３を取り付けた新規な構造を有し、また第２バンド部材２１は第２バンド３２にバックル２４を取り付けた従来技術の構造を有する。
【００１８】
ヘッドバンド１３の環状部材１９は、ポリエチレンやポリプロピレン、ポリエステル樹脂などの非伸縮性の材料から形成され、第１、第２バンド部材２０、２１の第１、第２バンド２２、３２は、伸縮性又は非伸縮性の帯片から形成される。この第１、第２バンド２２、３２については、幅や厚み、素材について特に制限がないから、従来用いられている種々の帯片を使用することができる。代表的には、例えばゴム又はプラスチックエラストマーのシートからなるものの他に、ナイロンやポリウレタン繊維からなる織り紐や編み紐、組み紐、不織布等を挙げることができる。
【００１９】
かかる各第１バンド部材２０では、第１バンド２２の後端部２２ｂが環状部材１９に形成されたバンド挿通孔１９ａに通されて第１バンド２２どうしで重なり合う部分を縫い合わせて一体化され、他方の前端部２２ａは長さ調整環２３を介して面体１１へ向かい、取付け板１６の接続アーム１７先端に着脱可能に取り付けられたバンド支持部材１７ａのバンド挿通孔に摺動自在に挿通されて折り返され、長さ調整環２３に接続されている。このように接続アーム１７先端のバンド支持部材１７ａにおけるバンド挿通孔に通されて長さ調整環２３まで折り返されている第１バンド２２の折り返し部は、第１バンド２２における余剰部２２ｃとなる。この長さ調整環２３については、後で詳述する。
【００２０】
図１において、従来構造の各第２バンド部材２１では、それぞれの第２バンド３２における前端部３２ａが取付け板１６の２つの接続アーム１８先端に着脱可能に取り付けられたバンド支持部材１８ａのバンド挿通孔に通されて第２バンド３２どうしで重なり合う部分が縫い合わされ、他方の後端部３２ｂ側には、バックル２４を構成している互いに係脱可能な第１部材２５と第２部材２６とのうちの少なくとも一方がこのバンド部材２１の長さを調節できるように取り付けられている。
【００２１】
バックル２４における第１部材２５にはＤ型リング２５ａが形成され、他方の第２部材２６にはフック２６ａが形成されている。２つの部材２５、２６は、第１部材２５のＤ型リング２５ａを第２部材２６のフック２６ａに引っかけるように係合させることで連結され、リング２５ａをフック２６ａから外せばその連結を解くことができる。
【００２２】
図３は、長さ調整環２３が取り付けられた第１バンド部材２０を部分的に示す平面図、図４は図３における４−４線で切断して示す断面図、図５は図４の要部拡大図である。図１、図３〜図５を参照して説明すると、この長さ調整環２３は、合成樹脂や金属などで形成され、第１バンド２２の両側部に沿って互いに並行して延びる一対の第１、第２側縁部２３ａ、２３ｂと、第１バンド２２を横断して第１、第２側縁部２３ａ、２３ｂの各端部どうしをつなぎ互いに離間並行する一対の第１、第２端縁部２３ｃ、２３ｄと、これら第１、第２端縁部２３ｃ、２３ｄ間を第１バンド２２の長さ方向において２分する中央支柱部２３ｅとを備え、この中央支柱部２３ｅの各端部も第１、第２側縁部２３ａ、２３ｂにつながっている。
【００２３】
この長さ調整環２３において、第１、第２側縁部２３ａ、２３ｂと第１端縁部２３ｃと中央支柱部２３ｅとが第１バンド通し孔２７ａを画成し、第１、第２側縁部２３ａ、２３ｂと第２端縁部２３ｄと中央支柱部２３ｅとが第２バンド通し孔２７ｂを画成している。このような長さ調整環２３は、第１バンド２２に摺動可能に取り付けられている。長さ調整環２３に対して第１バンド２２の前端部２２ａが第２バンド通し孔２７ｂを通って中央支柱部２３ｅを跨いでから第１バンド通し孔２７ａを通り抜け、第１バンド通し孔２７ａから延出する第１バンド２２の前端部２２ａが、面体１１におけるバンド支持部材１７ａのバンド挿通孔３１に摺動可能に通されて折り返されている。その折り返し部は余剰部２２ｃであって、余剰部２２ｃの先端側は、その端部２２ａを長さ調整環２３の第１端縁部２３ｃに掛け回し、重なり合う第１バンド２２どうしを縫合線２２ｈで一体化してループ２２ｄを形成し、長さ調整環２３の第１端縁部２３ｃにつながれている。
【００２４】
第１バンド２２の長さ方向における第１バンド通し孔２７ａの幅（第１端縁部２３ｃと中央支柱部２３ｅとの間隔）は、第２バンド通し孔２７ｂの幅（中央支柱部２３ｅと第２端縁部２３ｄとの間隔）よりも狭くされている。特に、第１バンド通し孔２７ａの幅は、図５に示されるように第１バンド２２が長さ調整環２３を中心に図の左右方向へ引っ張られたとき、第１バンド通し孔２７ａに挿通されている第１バンド２２における挿通部２２ｅの通過方向が第１バンド通し孔２７ａの開口面に対して垂直（図５において第１バンド通し孔２７ａの開口面に対して垂直な仮想線を符号３３で示す）に近くなる程に狭くされている。
【００２５】
また、長さ調整環２３における第２バンド通し孔２７ｂを画成している第２端縁部２３ｄは、長さ調整環２３を第１バンド２２に沿って摺動させる際の把持部として利用される。従って、第２バンド通し孔２７ｂは、該第２バンド通し孔２７ｂに着用者１２の指を入れて第２端縁部２３ｄを把持し易い大きさとされていることが好ましい。
【００２６】
次に、長さ調整環２３を移動させて第１バンド部材２０の長さを調整する方法について説明する。今、図３及び図４の状態から長さ調整環２３を第１バンド２２に沿って移動させて環状部材１９と面体１１におけるバンド支持部材１７ａとの間の距離を短くして第１バンド部材２０を締め付ける場合には、長さ調整環２３の把持部である第２端縁部２３ｄを指で掴み、これを矢印２８で示す右方向へ引っ張る。
【００２７】
すると、長さ調整環２３の第１端縁部２３ｃにつながれている余剰部２２ｃのループ２２ｄが図３及び図４で見て右方向に引っ張られる。余剰部２２ｃに付与された引っ張り力は、長さ調整環２３とバンド支持部材１７ａとの間の第１バンド２２に及ぶ。この結果、環状部材１９とバンド支持部材１７ａとの間の第１バンド２２がバンド支持部材１７ａのバンド挿通孔３１内を移動し、その移動した長さ分だけ長さ調整環２３が第１バンド２２に沿って矢印２８で示す方向へ移動する。
【００２８】
このように第１バンド部材２０を締め付ける場合には、長さ調整環２３を介して余剰部２２ｃに付与された引っ張り力が、長さ調整環２３からバンド支持部材１７ａへ向かって延びる部分の第１バンド２２に及び、この引っ張り力が第１バンド２２を長さ調整環２３の第１バンド通し孔２７ａから積極的に引き出すことになるため、長さ調整環２３はスムーズに第１バンド２２の上を摺動する。
【００２９】
このような長さ調整環２３の摺動によって余剰部２２ｃの長さが増加し、これとは逆に環状部材１９と取付け板１６のバンド支持部材１７ａとの間の第１バンド２２の実質長さが短くなって第１バンド部材２０が締め付けられて行く。着用者１２がこのヘッドバンド付きマスク１０を着用する際に第１バンド部材２０を締め付けると、第１バンド２２には弛もうとする反作用力が働くことがある。この反作用力は第１バンド２２の余剰部２２ｃを介して長さ調整環２３を矢印２８とは反対方向へ摺動させる引っ張り力となる。
【００３０】
しかし、長さ調整環２３の第２バンド通し孔２７ｂに挿通されている第１バンド２２の挿通部２２ｆに対して、弛もうとする引っ張り力が図５で見て矢印２９方向へ作用した場合、第１バンド２２が中央支柱部２３ｅを乗り越えて幅狭な第１バンド通し孔２７ａに入り、その挿通部２２ｅが前述のように垂直に近くなることで形成される屈曲部２２ｇは、中央支柱部２３ｅに圧接される。そのため、自ら弛もうとする引っ張り力のみでは長さ調整環２３を第１バンド２２に対して摺動させることができず、結果として弛み方向への長さ調整環２３の移動が起こらない。
【００３１】
このように、第１バンド部材２０における第１バンド２２の余剰部２２ｃは、その先端側に形成したループ２２ｄにより長さ調整環２３の第１端縁部２３ｃにつながれていることから、従来のように余剰部がフリーな状態となることはない。なお、この実施形態では、第１バンド２２における余剰部２２ｃの先端側は、長さ調整環２３における第１バンド通し孔２７ａを画成する第１端縁部２３ｃにつながれていたが、図６に示されるように余剰部２２ｃの端部２２ａを長さ調整環２３の中央支柱部２３ｅに掛け回し、同様にループ２２ｄを形成して該中央支柱部２３ｅにつないでもよい。
【００３２】
このヘッドバンド付きマスク１０では、長さ調整環２３をヘッドバンド１３における第１バンド部材２０の長さを調整するために使用したが、本発明は、この第１バンド部材２０に使用する場合に限定されない。図７〜図１１は、長さ調整環２３を第２バンド部材２１の長さを調整するために使用した例を示している。
【００３３】
図２に示されるように着用者１２の頸部１２ｂに掛け回される一対の第２バンド部材２１にこの長さ調整環２３を使用する場合、図７及び図８に示されるように互いに係脱可能な第１部材２５及び第２部材２６のそれぞれと取付け板１６の各接続アーム１８とをつないでいる第２バンド３２に長さ調整環２３が介在させられる。すなわち、各第２バンド部材２１では、図１に示されるように第２バンド３２の前端側の端部３２ａが面体１１におけるバンド支持部材１８ａのバンド挿通孔に通されて固定される。第２バンド３２の後端側の端部３２ｂは、図７及び図８に示されるように長さ調整環２３に対して第２バンド通し孔２７ｂを通って、中央支柱部２３ｅを跨いでから第１バンド通し孔２７ａを通り抜け、バックル２４へ向かって延びている。
【００３４】
長さ調整環２３の第１バンド通し孔２７ａから出た第２バンド３２の端部３２ｂは、バックル２４を構成している第１部材２５のバンド挿通孔２５ｂ及び第２部材２６のバンド挿通孔２６ｂのいずれかに移動可能に通されて折り返されている。その折り返された部分は余剰部３２ｃであって、余剰部３２ｃの先端側は、端部３２ｂを長さ調整環２３の第１端縁部２３ｃに掛け回し、重なり合う第２バンド３２どうしを縫合線３２ｈで一体化してループ３２ｄを形成することにより第１端縁部２３ｃにつながれている。
【００３５】
長さ調整環２３を有する第２バンド部材２１を着用者１２の頸部１２ｂに掛け回す場合には、第２バンド部材２１のバックル２４を頸部１２ｂの後ろ側に回し、第１部材２５のＤ型リング２５ａを第２部材２６のフック２６ａに引っかけるように係合させることで連結される。その後、各第２バンド部材２１の長さ調整環２３の把持部である第２端縁部２３ｄを指で掴み、第２バンド３２に沿って長さ調整環２３を移動させることで各第２バンド部材２１の長さがそれぞれ短くなり、その結果、第２バンド部材２１を頸部１２ｂに締め付けることができる。図７及び図８に示される例では、長さ調整環２３が一対の第２バンド部材２１の双方に設けられているが、いずれか一方の第２バンド部材２１だけに長さ調整環２３を設けてもよい。
【００３６】
図９〜図１１は、第２バンド部材２１の更に別な例を示している。この第２バンド部材２１は、図７及び図８で示された例と異なって、バックル２４を用いる代わりに四角形状の輪体、即ち連結環３０を継手として用いている。一対の第２バンド部材２１は、この連結環３０によって予め接続されて実質１本の第２バンド部材２１とされている。この第２バンド部材２１を着用者１２の頸部１２ｂに掛け回す場合、これを頭から被るようにして図１１に示されるように頸部１２ｂに掛け回す。この例では、図７及び図８に示されたバックル２４の第１部材２５及び第２部材２６が連結環３０に代わっただけで、連結環３０とバンド支持部材１８ａとの間の第２バンド３２に長さ調整環２３を介在させる取付け構造は図７及び図８に示される実施形態と同じである。
【００３７】
図１２（ａ）、図１２（ｂ）は、図１〜図１１とは異なる態様の長さ調整環１２３を示す平面図と、同図の１２ｂ−１２ｂ線切断面を示す図である。図１２（ａ）、図１２（ｂ）では、第１バンド２２に長さ調整環１２３を摺動可能に取り付けた第１バンド部材２０の一部を示し、図１〜図１１に示す長さ調整環２３と同一又は相当する構成部分には同一の参照符号を付けてその説明を省略する。
【００３８】
この長さ調整環１２３は、第１端縁部２３ｃを境に中央支柱部２３ｅとは反端側に第３バンド通し孔１２０を備える。バンド長さ方向における第３バンド通し孔１２０の幅は、第１バンド２２を挿通可能であり、かつ好ましくは第１バンド２２の厚みのほぼ２倍より小さい。この第３バンド通し孔１２０は、次のようにして画成することができる。すなわち、図３及び図４に示される長さ調整環２３において第１端縁部２３ｃを越えて第１、第２側縁部２３ａ、２３ｂを延長し、その延長縁部１２２ａ、１２２ｂの端部間に、第１端縁部２３ｃに並行に第３端縁部１２１を配置して端部どうしをつなぐ。このような長さ調整環１２３を実際に製作する場合には、先に説明した長さ調整環２３と同様に合成樹脂や金属などで一体的に形成される。
【００３９】
この長さ調整環１２３の場合、余剰部２２ｃの端部２２ａが第１端縁部２３ｃに掛け回された直後に第３バンド通し孔１２０に通される。そのため第１端縁部２３ｃに掛け回されている部分がこの第１端縁部２３ｃに対して強く圧接することから、ヘッドバンド１３の通常の使用状態において第１バンド２２に作用する引っ張り力では第１端縁部２３ｃへの掛け回し部分が該第１端縁部２３ｃに対して摺動することはなく、余剰部２２ｃの端部２２ａが長さ調整環１２３に実質的に取り外し不能につながれる。
【００４０】
このように余剰部２２ｃの端部２２ａを第１端縁部２３ｃに掛け回した直後に第３バンド通し孔１２０に通すことだけで、余剰部２２ｃの端部２２ａは長さ調整環１２３に実質的に取り外し不能につながれるが、第３バンド通し孔１２０に通した端部２２ａの引き出し長さを調整したりするときなどに、該端部２２ａが第３バンド通し孔１２０から抜け出てしまうことも予想される。そこで、第３バンド通し孔１２０に通された端部２２ａが抜け出ないように、第３バンド通し孔１２０に通された後の端部２２ａを折り重ねて二重にし、縫製（縫合線１２４）して一体化して抜け止め部１２５としておくことが好ましい。
【００４１】
また、第３バンド通し孔１２０の幅が、第１バンド２２の厚さのほぼ２倍よりも大きい場合であっても、二重にされた端部２２ａは曲げ剛性が高くなって変形し難くなるから、第３バンド通し孔１２０を容易に通り抜けることがなく、抜け止め部１２５として機能することが可能である。特に、第３バンド通し孔１２０に通された後の端部２２ａを折り重ね、縫製により一体化して二重にすると、図１２（ｂ）に示すように折り重ねた端部２２ａの端縁が縫製部を中心として、重ね合わせた他方のバンド２２表面から離れる方向に立ち上がる。そのため端部２２ａが第３バンド通し孔１２０から抜け出ようとすると、この立ち上がった部分が第１端縁部２３ｃに係止するため、第３バンド通し孔１２０からの余剰部２２ｃの端部２２ａの抜け出しが一層確実に防止されるので好ましい。
【００４２】
この長さ調整環１２３を用いた第１バンド部材２０では、第１バンド部材２０の長さの調整を、長さ調整環１２３を第１バンド２２に沿って移動させて行う他に、余剰部２２ｃの端部２２ａの第３バンド通し孔１２０からの引き出し長さを変えることでも可能となる。例えば、このヘッドバンド付きマスク１０の使用が長期になると、第１バンド部材２０の第１バンド２２に劣化による伸びが生じ、長さ調整環１２３の移動だけでは調整仕切れない場合が生じることも考えられる。そのようなときには、余剰部２２ｃの端部２２ａを第３バンド通し孔１２０から引き出すことにより対応することができる。
【００４３】
また、この長さ調整環１２３を使用した場合、余剰部２２ｃの端部２２ａを第３バンド通し孔１２０から十分に引き出した後に、それを二重に折り重ねて縫製することができ、例えば図４の例のように第１端縁部２３ｃに掛け回した状態で縫い合わせる必要がないから、縫い合わせの作業がそれだけ容易になり、第１バンド部２０の製作が容易になる。
【００４４】
長さ調整環１２３の上述の説明では、これを第１バンド部２０に用いた場合を例としたが、第２バンド部材２１についても図７〜図１０に示す長さ調整環２３に代えて態様の異なる長さ調整環１２３を第２バンド３２に摺動可能に取り付けて用いることができる。
【００４５】
【発明の効果】
本発明のヘッドバンド付きマスクによれば、バンドを長さ調整環の中央支柱部を跨いで第１及び第２バンド通し孔に通し、このバンドの一端部を面体などのバンド挿通孔に摺動可能に通して折り返し、この折り返された後の先端部を長さ調整環に固定したことにより、バンドの余剰部が環状部材などから出てフリー状態となることがなく、しかも面体を顔面に密着させる際のヘッドバンドの締め付け操作を迅速に行うことができる。
【図面の簡単な説明】
【図１】本発明のヘッドバンド付きマスクを示す斜視図である。
【図２】ヘッドバンド付きマスクを着用者に装着させて示す斜視図である。
【図３】長さ調整環を取り付けた第１バンド部材の部分平面図である。
【図４】図３の４−４線で切断して示す第１バンド部材の断面図である。
【図５】長さ調整環の第１バンド通し孔を通る第１バンドを示す部分断面図である。
【図６】第１バンドの余剰部の端部を中央支柱部につないだ長さ調整環を示す断面図である。
【図７】長さ調整環を取り付けた第２バンド部材を示す正面図である。
【図８】図７の８−８線で切断して示す第２バンド部材の断面図である。
【図９】長さ調整環を取り付けた第２バンド部材の他の例を示す正面図である。
【図１０】図９の１０−１０線で切断して示す第２バンド部材の断面図である。
【図１１】第２バンド部材を着用者の頸部に掛け回して示す斜視図である。
【図１２】図１２（ａ）は、態様の異なる長さ調整環を用いた第１バンド部材の部分平面図、図１２（ｂ）は図１２（ａ）の１２ｂ−１２ｂ線での切断断面図である。
【図１３】従来のバンド長さ調整構造を概略的に示す断面図である。
【図１４】従来の更に別のバンド長さ調整構造を概略的に示す断面図である。
【符号の説明】
１０　ヘッドバンド付きマスク
１１　面体
１２　着用者
１２ａ　後頭部
１２ｂ　頸部
１３　ヘッドバンド
１５　フィルタ取付け部
１６　ヘッドバンド取付け板
２０　第１バンド部材
２１　第２バンド部材
２２　第１バンド
２２ａ　第１バンドの前端部
２２ｂ　第１バンドの後端部
２２ｃ　第１バンドの余剰部
２２ｄ　ループ
２３、１２３　長さ調整環
２３ａ、２３ｂ　第１、第２側縁部
２３ｃ、２３ｄ　第１、第２端縁部
２３ｅ　中央支柱部
２４　バックル
２５　第１部材
２５ａ　Ｄ型リング
２５ｂ　バンド挿通孔
２６　第２部材
２６ａ　フック
２６ｂ　バンド挿通孔
２７ａ　第１バンド通し孔
２７ｂ　第２バンド通し孔
３０　連結環
３１　バンド挿通孔
３２　第２バンド
１２０　第３バンド通し孔
１２５　抜け止め部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mask with a headband, and more particularly to a mask with a headband suitable for use in dust and gas.
[0002]
[Prior art]
Dust and gas masks are equipped with a headband so that the face can be used in close contact with the face. This headband has a structure in which the length can be adjusted in accordance with the size of the headband so as to be wrapped around the head or neck of the wearer. For example, conventionally, the adjustment of the length of a head band in this type of mask has been performed using a band passing ring 1 attached to a band of a face member or a partner to be connected to each other as shown in FIG. .
[0003]
The band passing ring 1 includes a plate-shaped body 4 having an opening 3 through which the band 2 passes. The plate-like body 4 is provided with a band-laying shaft 5 directly above the opening 3, that is, on one surface side of the plate-like body 4 that is out of the plane forming the opening 3. In other words, the band winding shaft 5 is provided on one surface side of the plate-like body 4, and the band insertion opening 3 is formed in the plate-like body 4 at a position located directly below the shaft 5. .
[0004]
When adjusting the length of the band 2 by using the band passing ring 1, one end of the band 2 is passed through the opening 3 of the plate-like body 4 and wrapped around the shaft 5, and the opening of the plate-like body 4 is again opened. Turn back through part 3. One end side of the band 2 folded back through the band passing ring 1 in this way becomes a surplus portion 2a, and the surplus portion 2a is passed through the annular member 6 together with the band 2 extending toward the band passing ring 1 and bundled. .
[0005]
As another conventional example of adjusting the length of the band 2, a band loop 7 having two openings 7a and 7b formed in parallel is known as shown in FIG. As a method of use, the band 2 is passed through one opening 7a, and then is passed over the cross section 7c between the openings 7a and 7b and passed through the other opening 7b. The band 2 and the band loop 7 are slidable with each other.
[0006]
More specifically, one end of the band 2 coming out of the opening 7b of the band passer 7 is passed through, for example, a band insertion hole 8 provided in a face body and folded. One end of the band 2 folded back through the band insertion hole 8 becomes a surplus portion 2a, and the tip of the surplus portion 2a is a band 2 already passed through the two openings 7a and 7b of the band passer 7. Are passed through the openings 7a and 7b so as to overlap with the openings.
[0007]
[Problems to be solved by the invention]
As described above, in the conventional mask, when the length of the headband is adjusted, one end side of the band that becomes the surplus portion 2a becomes an obstacle for the wearer, so that the band that substantially tightens the annular member 6 or It was bundled using a band pass 7. However, the distal end of the surplus portion 2a is still in a state where it can easily move out of the annular member 6 and the like, and the distal end is very disturbing to the wearer.
[0008]
It is very troublesome to move the annular member 6 or the like every time the length of the band is adjusted so as to bundle the ends of the surplus portion 2a so that the tip of the surplus portion 2a is not in such a state. Then, when retightening after wearing, it becomes difficult to grasp the end of the surplus portion 2a this time. As described above, the conventional mask has a problem that the operation for bringing the face body into close contact with the face is troublesome and cannot be performed quickly.
[0009]
An object of the present invention is to solve such a conventional problem, and it is possible to quickly perform a tightening operation of a headband when a face body is brought into close contact with a face without an excess portion becoming an obstacle. An object of the present invention is to provide a mask with a headband provided with a length adjustment ring that can be used.
[0010]
[Means for Solving the Problems]
The present invention relates to a mask with a headband, and is configured as follows in order to solve the above-described problems of the related art. That is, the present invention provides a mask with a headband that is capable of being in close contact with the face of the wearer and capable of inhaling and exhausting air, and a headband-equipped mask including a headband that adheres the face to the face. At least one length adjustment ring that adjusts the length of the band, the first and second side edges extending parallel to each other along both sides of the band, and traversing the band. The first and second side edges are connected to each other in the longitudinal direction of the band by connecting the ends of the first and second side edges, and the length of the band is defined between the first and second edges. A central strut extending between the first and second side edges so as to be bisected in the direction, wherein each side edge, the first end edge, and the central strut define a first band through hole. And each side edge, the second end edge, and the central strut define a second band through hole, and the band The first band pass-through hole is slidably passed from the second band pass-through hole across the central support portion of the adjustment ring, and the end of the band coming out of the first band pass-through hole is used in a mask with a head band. The band is slidably passed through a band insertion hole formed separately from the length adjustment ring, and is folded back. The end of this folded portion is connected to the length adjustment ring so that it cannot be substantially removed. It is characterized by.
[0011]
The mask with a headband of the present invention has the above-described features, and further has the following features. That is, the end portion of the folded portion is wrapped around either the first edge portion or the central support portion, and is substantially non-removably connected by integrating the overlapping end portions. It is characterized by having.
[0012]
Further, in the mask with a headband according to the present invention, the length adjustment ring is formed on the third end opposite to the first band through hole with the first end edge as a boundary, through which the band can be inserted. A hole is provided, and the end of the folded portion is passed through the third band through hole after being looped around the first edge portion, and the passed end is folded and integrated to form the end portion. It is characterized in that it is prevented from coming out of the three band through hole and is substantially non-removably connected to the length adjusting ring.
[0013]
Further, in the mask with a headband according to the present invention, the distance between the first edge portion defining the first band through hole and the central support portion is the second end defining the second band through hole. It is characterized in that it is narrower than the distance between the edge and the central support.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the mask with a headband of the present invention will be described in more detail based on the embodiment shown in the drawings. FIG. 1 shows a mask 10 with a headband according to an embodiment of the present invention, and FIG. 2 shows a wearing state of the mask 10 with a headband. The mask 10 with a headband has a face body 11 and a headband 13 whose length can be adjusted to bring the face body 11 into close contact with the face of a wearer 12 of the mask 10 with the headband.
[0015]
The face body 11 is provided with a cover body 14 formed of a soft elastic material, which is in close contact with the face of the wearer 12 and covers the mouth and the periphery of the nostril. The cover body 14 is provided with a filter mounting portion. A filter 15 for filtering intake air is replaceably mounted on the filter mounting portion. A headband attachment plate (hereinafter, referred to as an attachment plate) 16 for connecting the headband 13 to the face body 11 is attached to a front surface of the cover 14 with a fastener 16a.
[0016]
The headband mounting plate 16 has a cross shape including four connection arms 17, 17, 18, and 18. The two connection arms 17 extend obliquely upward and left and right, respectively, when the cover 14 is viewed from the front. The other two connection arms 18 extend obliquely downward to the left and right. Such a mask 10 with a headband can be used for dust prevention or for gas proof, and the type of filter is selected according to the use.
[0017]
The headband 13 is formed of a flexible material, and has an annular member 19 shaped so as to be able to be applied to the back of the wearer 12a, and extends from the annular member 19 to each connecting arm 17 of the mounting plate 16. It has one first band member 20 and a pair of second band members 21 extending from each connection arm 18 of the mounting plate 16 and hung around the neck 12 b of the wearer 12. In the mask 10 with a headband shown in FIG. 1, the first band member 20 has a novel structure in which the length adjustment ring 23 is attached to the first band 22, and the second band member 21 is attached to the second band 32. It has a prior art structure with a buckle 24 attached.
[0018]
The annular member 19 of the headband 13 is formed from a non-stretchable material such as polyethylene, polypropylene, or polyester resin, and the first and second bands 22, 32 of the first and second band members 20, 21 are stretchable. Or it is formed from a non-stretchable strip. For the first and second bands 22 and 32, there are no particular restrictions on the width, thickness, and material, and various types of strips conventionally used can be used. Typically, for example, in addition to a sheet made of a rubber or plastic elastomer, a woven string, a knitted string, a braid, a nonwoven cloth, or the like made of nylon or polyurethane fiber can be used.
[0019]
In each of the first band members 20, the rear end portion 22b of the first band 22 is passed through a band insertion hole 19a formed in the annular member 19, and the overlapping portions of the first bands 22 are sewn together and integrated. The front end portion 22a of the base member faces the face body 11 via the length adjusting ring 23, and is slidably inserted into a band insertion hole of a band support member 17a detachably attached to the tip of the connection arm 17 of the attachment plate 16, and folded back. And is connected to a length adjustment ring 23. Thus, the folded portion of the first band 22 that has been passed through the band insertion hole in the band support member 17a at the tip of the connection arm 17 and folded back to the length adjustment ring 23 is a surplus portion 22c of the first band 22. The length adjustment ring 23 will be described later in detail.
[0020]
In FIG. 1, in each of the second band members 21 having the conventional structure, the front end portion 32a of each of the second bands 32 is inserted into the band support member 18a which is detachably attached to the tip of the two connection arms 18 of the attachment plate 16. A portion where the second band 32 overlaps with the second band 32 is sewn through the hole, and the first and second members 25 and 26 constituting the buckle 24 are detachable from each other on the other rear end portion 32b side. At least one of them is attached so that the length of the band member 21 can be adjusted.
[0021]
The first member 25 of the buckle 24 is formed with a D-shaped ring 25a, and the other second member 26 is formed with a hook 26a. The two members 25 and 26 are connected by engaging the D-shaped ring 25a of the first member 25 so as to be hooked on the hook 26a of the second member 26. When the ring 25a is removed from the hook 26a, the connection is released. Can be.
[0022]
FIG. 3 is a plan view partially showing the first band member 20 to which the length adjusting ring 23 is attached, FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. 3, and FIG. It is a principal part enlarged view. Referring to FIG. 1 and FIGS. 3 to 5, the length adjustment ring 23 is formed of a synthetic resin, metal, or the like, and extends in parallel with each other along both sides of the first band 22. A pair of first and second ends which are connected to each other by connecting each end of the first and second side edges 23a and 23b across the first band 22, and the second side edges 23a and 23b. It has edges 23c and 23d, and a central support 23e that bisects the first and second end edges 23c and 23d in the longitudinal direction of the first band 22. Each end of the central support 23e Are also connected to the first and second side edges 23a and 23b.
[0023]
In this length adjusting ring 23, the first and second side edges 23a and 23b, the first edge 23c, and the center support 23e define a first band through hole 27a, and the first and second sides 23a and 23b define a first band through hole 27a. The edges 23a, 23b, the second end edge 23d, and the center support 23e define a second band through hole 27b. Such a length adjusting ring 23 is slidably attached to the first band 22. With respect to the length adjusting ring 23, the front end portion 22a of the first band 22 passes through the second band through hole 27b, straddles the center support 23e, and then passes through the first band through hole 27a. The front end 22a of the extending first band 22 is slidably passed through the band insertion hole 31 of the band support member 17a of the face body 11 and is folded. The folded back portion is a surplus portion 22c, and the tip end side of the surplus portion 22c wraps the end portion 22a around the first end edge portion 23c of the length adjustment ring 23, and connects the overlapping first bands 22 to each other with a suture line 22h. To form a loop 22d, which is connected to the first edge 23c of the length adjustment ring 23.
[0024]
The width of the first band through-hole 27a in the length direction of the first band 22 (the distance between the first edge portion 23c and the center support portion 23e) is equal to the width of the second band through-hole 27b (the center support portion 23e and the second support portion 23e). (The distance from the two edge portions 23d). In particular, as shown in FIG. 5, the width of the first band through hole 27a is such that when the first band 22 is pulled left and right around the length adjustment ring 23 in the drawing, the first band through hole 27a is inserted into the first band through hole 27a. The passing direction of the insertion portion 22e in the first band 22 is perpendicular to the opening surface of the first band through hole 27a (in FIG. 5, a virtual line perpendicular to the opening surface of the first band through hole 27a is denoted by a symbol. 33 (shown as 33).
[0025]
The second edge portion 23d defining the second band through hole 27b in the length adjustment ring 23 is used as a grip when the length adjustment ring 23 is slid along the first band 22. Is done. Therefore, it is preferable that the second band through-hole 27b is sized so that the finger of the wearer 12 can be inserted into the second band through-hole 27b to easily grip the second edge 23d.
[0026]
Next, a method of adjusting the length of the first band member 20 by moving the length adjustment ring 23 will be described. Now, the length adjusting ring 23 is moved along the first band 22 from the state shown in FIGS. 3 and 4 to shorten the distance between the annular member 19 and the band supporting member 17a of the face body 11, thereby reducing the first band member. When tightening 20, the user grips the second edge 23 d, which is the gripping portion of the length adjustment ring 23, with his finger, and pulls this to the right as indicated by the arrow 28.
[0027]
Then, the loop 22d of the surplus portion 22c connected to the first edge portion 23c of the length adjusting ring 23 is pulled rightward as viewed in FIGS. The tensile force applied to the surplus portion 22c reaches the first band 22 between the length adjustment ring 23 and the band support member 17a. As a result, the first band 22 between the annular member 19 and the band supporting member 17a moves in the band insertion hole 31 of the band supporting member 17a, and the length adjusting ring 23 is moved by the moved length by the first band. It moves in the direction indicated by arrow 28 along 22.
[0028]
When the first band member 20 is tightened in this manner, the pulling force applied to the surplus portion 22c via the length adjustment ring 23 causes the pulling force of the portion extending from the length adjustment ring 23 toward the band support member 17a. The first band 22 is pulled out from the first band through hole 27a of the length adjusting ring 23 by the pulling force. Slide over.
[0029]
The sliding of the length adjusting ring 23 increases the length of the surplus portion 22c, and conversely, the substantial length of the first band 22 between the annular member 19 and the band supporting member 17a of the mounting plate 16 As the length becomes shorter, the first band member 20 is tightened. When the wearer 12 tightens the first band member 20 when wearing the headband-equipped mask 10, a reaction force to loosen the first band 22 may be applied. This reaction force becomes a pulling force for sliding the length adjusting ring 23 in the direction opposite to the arrow 28 via the surplus portion 22c of the first band 22.
[0030]
However, in the case where a pulling force to be loosened acts on the insertion portion 22f of the first band 22 inserted into the second band through hole 27b of the length adjustment ring 23 in the direction of arrow 29 in FIG. The bent portion 22g formed by the first band 22 getting over the central support portion 23e and entering the narrow first band through hole 27a, and the insertion portion 22e being close to vertical as described above, It is pressed against the portion 23e. Therefore, the length adjusting ring 23 cannot be slid with respect to the first band 22 only by the pulling force to loosen by itself, and as a result, the length adjusting ring 23 does not move in the loosening direction.
[0031]
As described above, since the surplus portion 22c of the first band 22 in the first band member 20 is connected to the first edge portion 23c of the length adjustment ring 23 by the loop 22d formed on the tip side thereof, As described above, the surplus portion does not become free. In this embodiment, the tip side of the surplus portion 22c of the first band 22 is connected to the first edge portion 23c that defines the first band through hole 27a of the length adjustment ring 23. As shown in (2), the end 22a of the surplus portion 22c may be looped around the central support 23e of the length adjustment ring 23, and a loop 22d may be formed in the same manner and connected to the central support 23e.
[0032]
In the mask 10 with the headband, the length adjustment ring 23 is used to adjust the length of the first band member 20 in the headband 13. However, the present invention is applied to a case where the first band member 20 is used. Not limited. 7 to 11 show an example in which the length adjustment ring 23 is used to adjust the length of the second band member 21.
[0033]
As shown in FIG. 2, when this length adjusting ring 23 is used for a pair of second band members 21 wound around the neck 12b of the wearer 12, they are engaged with each other as shown in FIG. 7 and FIG. A length adjustment ring 23 is interposed in a second band 32 connecting each of the detachable first member 25 and second member 26 to each connection arm 18 of the mounting plate 16. That is, in each of the second band members 21, the front end 32 a of the second band 32 is passed through the band insertion hole of the band supporting member 18 a in the face body 11 and fixed as shown in FIG. 1. The rear end 32b of the second band 32 passes through the second band through hole 27b with respect to the length adjusting ring 23 as shown in FIGS. It passes through the first band through hole 27 a and extends toward the buckle 24.
[0034]
The end 32b of the second band 32 protruding from the first band through-hole 27a of the length adjustment ring 23 is connected to the band through-hole 25b of the first member 25 and the band through-hole of the second member 26 constituting the buckle 24. 26b so as to be movable and folded back. The folded back portion is a surplus portion 32c, and the tip side of the surplus portion 32c wraps the end portion 32b around the first edge portion 23c of the length adjustment ring 23, and connects the overlapping second bands 32 with each other by a suture line. A loop 32d is formed integrally at 32h to be connected to the first edge portion 23c.
[0035]
When the second band member 21 having the length adjustment ring 23 is hung around the neck 12b of the wearer 12, the buckle 24 of the second band member 21 is turned behind the neck 12b, and the first member 25 The connection is established by engaging the D-shaped ring 25a so as to hook the hook 26a of the second member 26. After that, the second edge portion 23 d, which is the grip portion of the length adjustment ring 23 of each second band member 21, is gripped with a finger, and the length adjustment ring 23 is moved along the second band 32 to thereby form each second band member 23. The length of each of the band members 21 is reduced, and as a result, the second band member 21 can be fastened to the neck 12b. In the example shown in FIGS. 7 and 8, the length adjustment ring 23 is provided on both of the pair of second band members 21, but the length adjustment ring 23 is provided only on one of the second band members 21. It may be provided.
[0036]
9 to 11 show still another example of the second band member 21. FIG. The second band member 21 is different from the examples shown in FIGS. 7 and 8 in that a square ring, that is, a connecting ring 30 is used as a joint instead of using the buckle 24. The pair of second band members 21 are connected in advance by the connecting ring 30 to form substantially one second band member 21. When the second band member 21 is wrapped around the neck 12b of the wearer 12, the second band member 21 is wrapped around the neck 12b as shown in FIG. In this example, only the first member 25 and the second member 26 of the buckle 24 shown in FIGS. 7 and 8 are replaced with the connecting ring 30, and the second band between the connecting ring 30 and the band supporting member 18a is formed. The mounting structure in which the length adjusting ring 23 is interposed between the shafts 32 is the same as the embodiment shown in FIGS. 7 and 8.
[0037]
FIGS. 12A and 12B are a plan view showing the length adjustment ring 123 in a mode different from FIGS. 1 to 11, and a view showing a cross section taken along line 12b-12b in FIG. FIGS. 12A and 12B show a part of the first band member 20 in which the length adjustment ring 123 is slidably attached to the first band 22, and the length shown in FIGS. Components that are the same as or correspond to the adjustment ring 23 are given the same reference numerals, and descriptions thereof are omitted.
[0038]
The length adjusting ring 123 has a third band through hole 120 on the opposite side from the center support 23e with the first edge 23c as a boundary. The width of the third band through hole 120 in the band length direction allows the first band 22 to be inserted, and is preferably smaller than approximately twice the thickness of the first band 22. The third band through hole 120 can be defined as follows. That is, in the length adjusting ring 23 shown in FIGS. 3 and 4, the first and second side edges 23a and 23b are extended beyond the first edge 23c, and the ends of the extended edges 122a and 122b are extended. In between, the third edge 121 is arranged in parallel with the first edge 23c to connect the ends. When such a length adjustment ring 123 is actually manufactured, it is integrally formed of a synthetic resin, metal, or the like, similarly to the length adjustment ring 23 described above.
[0039]
In the case of the length adjusting ring 123, the end portion 22a of the surplus portion 22c is passed through the third band through hole 120 immediately after the end portion 22a is looped around the first edge portion 23c. Therefore, since the portion wound around the first edge portion 23c is strongly pressed against the first edge portion 23c, the pulling force acting on the first band 22 in the normal use state of the headband 13 is small. The looped portion around the first edge portion 23c does not slide with respect to the first edge portion 23c, and the end portion 22a of the surplus portion 22c is connected to the length adjustment ring 123 so as to be substantially non-removable. You.
[0040]
By just passing the end 22a of the surplus portion 22c through the third band through hole 120 immediately after looping the end 22a around the first edge portion 23c, the end 22a of the surplus portion 22c is substantially The end 22a may come out of the third band through hole 120 when adjusting the draw-out length of the end 22a that has passed through the third band through hole 120. Is also expected. Therefore, the end 22a passed through the third band through hole 120 is folded and doubled so that the end 22a passed through the third band through hole 120 does not come off, and the sewing is performed (sewing line 124). It is preferable that the retaining portion 125 is integrally formed.
[0041]
Further, even when the width of the third band through hole 120 is larger than almost twice the thickness of the first band 22, the doubled end 22a has high bending rigidity and is hardly deformed. As a result, it is possible to function as the retaining portion 125 without easily passing through the third band through hole 120. In particular, when the end portion 22a after passing through the third band through hole 120 is folded and integrated by sewing to make it double, the edge of the folded end portion 22a as shown in FIG. With the sewn portion as the center, it rises in the direction away from the surface of the other band 22 that is superimposed. Therefore, when the end portion 22a attempts to escape from the third band through hole 120, the rising portion is locked to the first edge portion 23c, so that the end portion 22a of the surplus portion 22c from the third band through hole 120 is removed. It is preferable because escape is more reliably prevented.
[0042]
In the first band member 20 using the length adjusting ring 123, the length of the first band member 20 is adjusted by moving the length adjusting ring 123 along the first band 22, and the surplus portion is adjusted. It is also possible by changing the length of the end 22a of the end 22c drawn out from the third band through hole 120. For example, if the mask 10 with the headband is used for a long time, the first band 22 of the first band member 20 may be elongated due to deterioration, and the adjustment may not be completed only by moving the length adjustment ring 123. Can be In such a case, it can be dealt with by pulling out the end 22a of the surplus portion 22c from the third band through hole 120.
[0043]
When the length adjusting ring 123 is used, after the end portion 22a of the surplus portion 22c is sufficiently pulled out from the third band through hole 120, it can be double-folded and sewn. Since there is no need to sew the first band portion 23c around the first edge portion 23c as in the example of Example 4, the sewn operation becomes easier and the production of the first band portion 20 becomes easier.
[0044]
In the above description of the length adjustment ring 123, the case where this was used for the first band portion 20 was described as an example, but the second band member 21 is also replaced with the length adjustment ring 23 shown in FIGS. A length adjustment ring 123 having a different aspect can be used by being slidably attached to the second band 32.
[0045]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the mask with a headband of this invention, a band passes through the 1st and 2nd band through-hole over the center support | pillar part of a length adjustment ring, and slides one end of this band into the band through-holes, such as a surface body. It is folded back as much as possible, and the tip after this folding is fixed to the length adjustment ring, so that the surplus part of the band does not come out of the annular member etc. and becomes free, and the face body adheres to the face The tightening operation of the headband at the time of the operation can be performed quickly.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a mask with a headband of the present invention.
FIG. 2 is a perspective view showing a mask with a headband worn on a wearer.
FIG. 3 is a partial plan view of a first band member to which a length adjustment ring is attached.
FIG. 4 is a cross-sectional view of the first band member taken along a line 4-4 in FIG. 3;
FIG. 5 is a partial cross-sectional view showing a first band passing through a first band through hole of a length adjustment ring.
FIG. 6 is a cross-sectional view showing a length adjusting ring in which an end of a surplus portion of the first band is connected to a central support.
FIG. 7 is a front view showing a second band member to which a length adjustment ring is attached.
FIG. 8 is a cross-sectional view of the second band member taken along line 8-8 in FIG. 7;
FIG. 9 is a front view showing another example of the second band member to which the length adjustment ring is attached.
FIG. 10 is a cross-sectional view of the second band member cut along line 10-10 in FIG. 9;
FIG. 11 is a perspective view showing the second band member hung around the neck of the wearer.
12A is a partial plan view of a first band member using a different length adjusting ring in a different mode, and FIG. 12B is a cross-sectional view taken along line 12b-12b in FIG. 12A. FIG.
FIG. 13 is a sectional view schematically showing a conventional band length adjusting structure.
FIG. 14 is a cross-sectional view schematically showing still another conventional band length adjusting structure.
[Explanation of symbols]
10 Mask with headband
11 faces
12 wearer
12a occipital region
12b neck
13 Headband
15 Filter mounting part
16 Headband mounting plate
20 First band member
21 Second band member
22 First band
22a Front end of first band
22b Rear end of first band
22c Surplus part of first band
22d loop
23, 123 Length adjustment ring
23a, 23b First and second side edges
23c, 23d First and second edges
23e central support
24 buckles
25 First member
25a D-shaped ring
25b Band insertion hole
26 Second member
26a hook
26b Band insertion hole
27a 1st band through hole
27b 2nd band through hole
30 connecting ring
31 Band insertion hole
32 Second Band
120 Third band through hole
125 retaining part

Claims

In a mask with a headband that is capable of being in close contact with the face of the wearer and capable of inhaling and exhausting air, and a headband that includes the face in close contact with the face,
The headband has a band and at least one length adjustment ring for adjusting the length of the band,
The length adjustment ring includes first and second side edges extending in parallel with each other along both sides of the band, and ends of the first and second side edges across the band. First and second edges facing each other in the longitudinal direction of the band, and the first and second edges are divided into two in the longitudinal direction of the band between the first and second edges. A center post extending between the side edges, wherein each side edge, the first end edge, and the center post define a first band through hole; A second edge portion and the central post define a second band through hole;
The band passes through the first band through hole after passing through the second band through hole of the length adjusting ring and slidably straddling the central support portion.
The end of the band that has exited from the first band through hole is folded back through the band with a different band insertion hole from the first and second band through holes of the length adjustment ring in the mask with a head band. A mask with a headband, wherein the end of the folded portion is substantially non-removably connected to the length adjusting ring.

The end portion of the folded portion is wound around one of the first edge portion and the central support portion, and is substantially non-removable by integrating the overlapping end portions. The mask with a headband according to claim 1, which is connected.

The length adjustment ring includes a third band through-hole formed on the opposite side to the first band through-hole with respect to the first edge, and through which the band can be inserted. The end portion is passed through the third band through hole after being looped around the first edge portion, and the passed end portion is folded and integrated so that the end portion becomes the third end portion. The mask with a headband according to claim 1, wherein the mask is attached to the length adjusting ring so as not to be removed from the band through hole, and is substantially non-removably connected to the length adjusting ring.

The distance between the first end portion defining the first band through hole and the central support portion is equal to the second end portion defining the second band through hole and the central support portion. The mask with a headband according to any one of claims 1 to 3, wherein the distance between the headband and the part is smaller than the distance between the headband and the part.