JP3786052B2

JP3786052B2 - Ignition equipment

Info

Publication number: JP3786052B2
Application number: JP2002161121A
Authority: JP
Inventors: 保昭中村; 利教森下
Original assignee: Tokai Corp
Current assignee: Tokai Corp
Priority date: 2001-07-16
Filing date: 2002-06-03
Publication date: 2006-06-14
Anticipated expiration: 2022-06-03
Also published as: WO2003008868A1; CN1529802A; CN100343579C; EP1408278A1; US20040191715A1; JP2003097809A

Description

【０００１】
【発明の属する技術分野】
本発明は、操作部材の点火操作によってガス噴出ノズルから炎を噴出する着火器具において、通常はロック部材を器具本体に係止させて点火ロックを行う一方、使用に際して係止を外して点火ロックを解除し点火可能とするようにした機構に関するものである。
【０００２】
【従来の技術】
着火器具、例えば点火棒は操作部材を押し込むことにより、簡単に点火できる便利なものであるが、不用意に点火することができないように、もしくは、偶発的な点火が生起しないようにロック機構を設置することが要求され、これまで各種の機構を備えた着火器具が提案されている。
【０００３】
例えば、特開平８−６１６７３号公報には、操作部材の一部にロック部が干渉して点火ロックするロック部材を、操作部材の移動方向と交差する方向に移動可能に設置し、このロック部材をロック方向に付勢する付勢部材を配設し、さらに、前記ロック部材は付勢部材に抗して移動可能な解除操作部を有し、この解除操作部を操作部材の操作部の近傍に突設してなる機構を有する着火器具が開示されている。
【０００４】
また、米国特許6,217,313号明細書に開示されているロック機構は、点火操作を行う操作部材の操作部の一部に、ロック部材をスライド可能に設け、このロック部材は付勢部材によってロック位置にあるときには、操作部材の内部に延びるアーム部の先端が圧電ユニットの一部に干渉してロック状態となり、ロック解除位置にスライド操作した際には、干渉が外れて操作部材が作動可能となるものである。
【０００５】
【発明が解決しようとする課題】
しかしながら、前者のようなロック機構では、ロック部材とこのロック部材をロック方向に付勢するスプリングによる付勢部材とが別途に器具本体に組み付けられることで、それらの組み付け性の点で難点があり、大量生産における生産性の向上を図る際の障害となる。また、点火操作に多段階操作が必要でその操作性に難点がある。
【０００６】
つまり、ロック部材と付勢部材との２つの部品を操作部材とは別途に、組み付けるのが煩雑であるとともに、付勢部材はある程度変形させた状態で組み付ける必要があり、他の部品が配設されている器具本体の内部にこれらの部品を効率よく組み付けるのが困難となる問題を有している。また、通常の使用状態における点火操作時のロック解除操作は、解除操作部が操作部材から離れた突起状で、その解除操作と操作部材の押し込み操作との連係性に欠け、多段階の煩雑な操作となって安定した着火が得られ難い場合がある。
【０００７】
また、後者のようなロック機構では、ロック部材のアーム部が操作部材の移動方向に延びて、操作部材内部の圧電ユニットと干渉させる構造であるため、操作部材の内部スペースが狭い場合には、ロック部材の移動範囲が小さくなって、ロック位置と解除位置との安定した操作性を得にくく、さらに、アーム部と圧電ユニットとの干渉部分が小さくて確実なロック状態および解除状態が確保しにくく、多数回の使用で先端が摩耗した際には機能が損なわれる可能性がある。
【０００８】
本発明はこの点に鑑み、操作部材の操作によって点火を行うについて、点火ロックとロック解除と自動復帰とが良好な組付性を確保しつつ行え、操作性も向上したロック機構を備えた着火器具を提供することを目的とするものである。
【０００９】
【課題を解決するための手段】
本発明の着火器具は、器具本体と、ガスタンク部と、該ガスタンク部からガス噴出ノズルへのガスの供給を開閉するバルブ機構と、電気点火用の給電を行う発火装置と、点火操作を行う摺動自在な操作部材とを備えた着火器具において、
前記操作部材と一体に点火操作方向へ移動するとともに、ロック位置とロック解除位置とに移動操作可能に設置されたロック部材と、該ロック部材にそのロック移動方向に延びて設けられ、前記器具本体に形成された係合部と干渉して前記操作部材の点火操作をロックするロック部と、前記ロック部材をロック位置に付勢する付勢部材とを備え、
前記ロック部材を操作して点火ロックを解除した状態で、該ロック部材とともに操作部材を摺動させて点火操作を行い、操作部材の復帰移動に伴ってロック部材が自動的にロック位置に復帰することを特徴とするものである。
【００１０】
前記ロック部材および前記付勢部材を組み付けた前記操作部材を、前記器具本体に組み付けてなるものが好適である。
【００１１】
前記ロック部材を、前記操作部材の操作部分を兼ねて該操作部材と一体に設置するのが好適である。
【００１２】
前記ロック部材と前記操作部材が組み合わされることにより前記発火装置の一部を点火可能な位置まで移動させることが可能となるよう配設してもよい。
【００１３】
また、前記ロック部材を、前記操作部材内に配設してもよい。
【００１４】
一方、前記器具本体の係合部を、前記操作部材の点火操作方向と平行に延びる部材で形成し、その先端部に前記ロック部材のロック部が係止するものが好適である。
【００１５】
前記ロック部材のロック部は、前記器具本体の係合部によりロック解除状態が保持された状態で点火操作方向に移動可能としたものが好適である。
【００１６】
前記器具本体の係合部は、前記ロック部材のロック部が挿通する縦溝を備えてもよい。
【００１７】
また、前記器具本体の係合部を、該器具本体の内部に形成して配設するようにしてもよい。また、前記ロック部材のロック部を、前記器具本体の内部に配設するようにしてもよい。
【００１８】
前記発火装置は、圧電ユニット、電池式放電ユニット、通電発熱ユニット等で構成され、操作部材の操作に伴って給電し点火を行うものである。
【００１９】
本発明の着火器具では、ロック部材が付勢部材によってロック位置にある際には、そのロック部が器具本体の係合部と干渉する状態にあり、操作部材の移動を阻止して点火ロックを行っている。そして、ロック部材を付勢部材に抗して解除位置に操作すると、前記ロック部も移動して係合部との干渉が外れ、これにより操作部材の移動が可能になり、操作部材の操作で噴出した燃料ガスに点火が行われる。この操作部材およびロック部材の操作を解放すると、操作部材が復帰移動するのに伴ってロック部材のロック部が付勢部材の付勢により器具本体の係合部と干渉する位置に移動して前記点火ロック状態に自動復帰するものであり、不使用時には常時操作部材の点火操作を不能として不用意な点火を防止することで所期のロック機能を得ている。
【００２０】
【発明の効果】
本発明の着火器具によれば、操作部材の点火操作に先立ってロック部材のロック解除操作を必要としたことにより、適切な使い方を知らない者によるロック解除を困難として、不用意な点火を阻止することができるとともに、復帰移動時には自動的にロック状態に復帰することによりロック解除状態に放置されることがなく、消火状態においては確実なロック状態を確保して信頼性を高めることができる。また、ロック部材のロック部をロック移動方向に延ばして器具本体の係合部に干渉させてロック状態を得るようにしたことにより、ロック部材の移動範囲が広く確保でき、確実なロック状態が得られ、ロック解除位置への操作性に優れている。さらに、ロック部材の解除操作と操作部材の押し込み操作とを連係して行え、点火操作が多段階操作でなく、一連に行えて操作性に優れ安定した着火が得られる。
【００２１】
さらに、ロック部材と付勢部材とを予め操作部材と一体に組み付けてから器具本体に組み込むことが可能であり、効率の良い組み付けが行え、大量生産における生産性の向上が図れる。
【００２２】
【発明の実施の形態】
以下、図面を参照して本発明の各実施の形態を詳細に説明する。
【００２３】
＜第１の実施の形態＞
この実施の形態の点火棒による着火器具を図１〜図３に示し、図１は要部断面図、図２は作動状態の断面図、図３はロック機構の斜視図である。但し、この第１の実施の形態は参考例であり、本願発明には含まない。
【００２４】
本実施形態の着火器具（点火棒）１は、器具本体２と、棒状に延びた延長先部３（先端部分は図示省略）とによって構成される。器具本体２は、合成樹脂により成形されたガスタンク部５と、これより前方でほぼ中央で縦に分割された中間ケース６とで形成され、図１および図２では中間ケース６の一方を示している。
【００２５】
器具本体２の基端側（図で右側）には、ガスタンク部５内にブタンガス等の高圧ガスを収容するガス貯蔵室（不図示）を備え、このガス貯蔵室の上部側の壁部分にガスの供給を開閉するバルブ機構８が配設されている。このバルブ機構８は、前記ガス貯蔵室のガスが送給されるガス通路に介装されたノズル部材１０を備える。このノズル部材１０の先端部分は、該ノズル部材１０を開操作する回動レバー１４の一端部と係合され、該回動レバー１４の作動によりノズル部材１０が前進移動し、ガス通路を開いてガスの供給を行う一方、バルブ機構８内に配設したスプリングによりノズル部材１０は後退移動してガス通路を閉じてガスの供給を停止する。なお、バルブ機構８は外部に突出した炎調整つまみ１３を備え、その回動によってガスの供給量すなわち炎の大きさが調整できる。
【００２６】
さらに、ノズル部材１０の最先端部の延長線上には、コネクタ部材１６が配設されて、ガスパイプ１８に接続されている。このガスパイプ１８は延長先部３の先端部にまで延びて、不図示のガス噴出ノズルに接続され、ガスを送給する。
【００２７】
また、前記器具本体２の中間ケース６には、前記バルブ機構８の側方に、該バルブ機構８の中心線と平行にスライド自在な操作部材２０が配設され、該操作部材２０の内方と前記ガスタンク部５との間に発火装置の一つである圧電ユニット２２が設置されている。
【００２８】
前記操作部材２０は、中間ケース６の開口から内部に摺動自在に支持される箱状基部２０ｂを有し、該箱状基部２０ｂの前面部に、後述のロック部材２５が操作部分を兼ねて設けられている（図３参照）。また、箱状基部２０ｂのバルブ機構８側の端部には、摺動方向に延長された脚部２０ｄを備える。該脚部２０ｄが点火移動時に前記回動レバー１４の端部に連係して、これを回動させるようになっている。
【００２９】
前記回動レバー１４は略Ｌ字状に形成され、中間部分の支点を中心にして回動自在に保持され、前記操作部材２０の脚部２０ｄによって回動操作されるものであり、点火操作に伴う回動で前記バルブ機構８のノズル部材１０を開方向へ引き出すように前進移動させる。
【００３０】
また、前記圧電ユニット２２は放電電圧を給電するものであって、伸縮作動するスライド部２２ａが前記操作部材２０の箱状基部２０ｂ内の中壁２０ｅより上部側に嵌着され、該操作部材２０の後退作動に伴ってスライド部２２ａが没入移動し、放電電圧を発生するように構成されている。この圧電ユニット２２の一方の極に接続されたリード線２３は、図示しない放電電極に接続される。また、他方の極は図示しない経路を経てガス噴出ノズルに接続される。
【００３１】
前記中間ケース６は、延長部３に直線状に連なる部位の側方に、上記操作部材２０の前側に指を挿入する空間を形成しつつ囲む保護枠６ａを一体に備える。また、非操作状態にある操作部材２０の前端上部における中間ケース６（器具本体２）の内部の内面には、両側から操作部材２０の点火操作方向と平行に中心方向に突出して配設された板状部材による係合部６ｂ，６ｂを備える。両側の係合部６ｂ，６ｂの内側面は、図３に示すように、中央部分で後述のロック部材２５のロック部２５ｂより狭い幅で相互に近接し、この係合部６ｂ，６ｂの前側端面が、該ロック部２５ｂと係止可能である。
【００３２】
次に、上記のような構造の着火器具１に対し、前記操作部材２０の点火動作を規制するロック機構が設置されている。このロック機構は、前記操作部材２０の点火操作をロックまたは解除する、前記操作部材２０に装着されたロック部材２５と、コイルスプリングによる付勢部材２６とを備えている。
【００３３】
ロック部材２５は、前記操作部材２０の前面全体に、その移動方向と略直交する方向に摺動可能に且つ操作部材２０と離れないように、その操作部分を兼ねて装着されている。このロック部材２５は、図３(ａ)に示すように、略矩形状の基板２５ａの上端部に、上方（ロック移動方向）に延びて突出したロック部２５ｂを備え、基板２５ａの前表面は湾曲形成され、指掛け用の凹凸形状が設けられた操作部２５ｃ（ロック解除操作部および点火操作部）が形成されている。また、基板２５ａの背面の上部の両側には、後方に突出して上下方向に延びる摺動突起２５ｄを備え、この摺動突起２５ｄには先端の側方に突出する抜け止め突起が形成されている。さらに、上記摺動突起２５ｄより下方の基板２５ａの背面には、後方に板状に突出し、下面に円筒状突起が付設された受け部２５ｅを備えている。
【００３４】
一方、前記操作部材２０の箱状基部２０ｂの前端上部には、両側に上下方向に延びるガイド溝２０ｆを備える。このガイド溝２０ｆに対して、前面側からロック部材２５の摺動突起２５ｄが押し込まれて嵌着され、その際、前記受け部２５ｅは円筒状突起にコイルスプリングによる付勢部材２６が下向きに装着された状態で、操作部材２０の箱状基部２０ｂの中壁２０ｅより下方の空間に挿入され、図３(ｂ)のように組み付けられる。
【００３５】
上記操作部材２０に対するロック部材２５の組み付けにより、ロック部材２５は上方のロック位置（図１参照）と、下方のロック解除位置（図２参照）とに上下移動可能であるとともに、ロック部材２５の受け部２５ｅと箱状基部２０ｂの対向内壁との間に縮装された付勢部材２６の付勢力によって、ロック部材２５は操作部材２０からロック部２５ｂが突出する上方のロック位置の方向に付勢されている。
【００３６】
さらに、上記のようなロック部材２５を装着した操作部材２０が中間ケース６に組み付けられると、上方に付勢されたロック位置でロック部２５ｂが中間ケース６内に配置され、係合部６ｂの前端部と係合干渉し、下方のロック解除位置に移動した際に両者の干渉が解除され、さらに、押し込み点火操作に伴い係合部６ｂの下面に沿ってロック解除状態のロック部２５ｂが移動するように構成されている。
【００３７】
以上のような本実施形態の着火器具１のロック機構についてその作用を説明する。まず、図１に示す状態が、ロック部材２５が上昇したロック位置（放置位置）であり、この状態では、操作部材２０の点火のための移動操作、具体的にはロック部材２５の前面操作部２５ｃを、操作部材２０を押し込むように操作しても、ロック部材２５のロック部２５ｂが器具本体２の係合部６ｂに当接して点火ロックされ、その押し込み動作は不能で点火操作は行えない。
【００３８】
次に着火器具１を使用する場合には、図２に示すように、ロック部材２５を操作部材２０の操作方向と直交する方向、つまり、下方のロック解除方向に摺動操作すると、そのロック部２５ｂが係合部６ｂの前端より下方に移動して干渉が外れ、点火ロックが解除されて操作部材２０の押し込み点火操作が可能となる。この状態を維持したままロック部材２５および操作部材２０を押し込み操作することにより、ガスの供給および放電点火が行われて着火される。
【００３９】
使用を終了するためにロック部材２５の操作部２５ｃから手を離すと、圧電ユニット２２内のスプリングにより操作部材２０は突出移動して初期の位置に戻るとともに、ロック部材２５は付勢部材２６の付勢力によってロック位置に移動し、ロック部２５ｂが係合部６ｂと干渉する図１の点火ロック状態に自動的に復帰する。
【００４０】
＜第２の実施の形態＞
図４は他の実施形態のロック機構を備えた着火器具の要部断面図、図５は作動状態を示す断面図、図６はロック機構の斜視図である。
【００４１】
本実施形態の着火器具１１におけるロック機構は、ロック部材２７および係合部６ｃの形態が異なるほかは、操作部材２０、圧電ユニット２２（発火装置）、付勢部材２６などは第１の実施の形態と同様に構成されており、同一部分には同一符号を付して説明を省略する。
【００４２】
また、本実施の形態においては、ロック部材２７のロック位置とロック解除位置とが、前述の第１の実施の形態のロック部材２５とは逆となるように構成されている。
【００４３】
ロック部材２７は、操作部材２０の前面全体に、その移動方向と略直交する方向に摺動可能に且つ操作部材２０と離れないように、その操作部分を兼ねて装着されている。このロック部材２７は、図６(ａ)に示すように、略矩形状の基板２７ａの上端部に、上方（ロック移動方向）に延びて突出する略Ｔ形状のロック部２７ｂを備え、基板２７ａの前表面は湾曲形成され、指掛け用の凹凸形状が設けられた操作部２７ｃが形成されている。また、基板２７ａの背面の上部の両側には、後方に突出して上下方向に延びる摺動突起２７ｄを備え、この摺動突起２７ｄには先端の側方に突出する抜け止め突起が形成されている。さらに、基板２７ａの背面の下端部近傍には、後方に板状に突出し、上面に円筒状突起が付設された受け部２７ｅを備えている。上記ロック部２７ｂは、基板２７ａの上端中央に立設された細幅の連結首部２７ｆと、その上端に両側に延びて連設された横棒部２７ｇとにより略Ｔ形状に設けられてなる。
【００４４】
一方、中間ケース６に形成される板状部材による係合部６ｃ，６ｃは、図６(ａ)に示すように、非操作状態にある操作部材２０の前端上部における中間ケース６（器具本体２）の内部の内面に、両側から操作部材２０の点火操作方向と平行に中心方向に突出し、両側の係合部６ｃ，６ｃの内側面は、中央部分に縦溝６ｄが形成されるように、前記ロック部２７ｂの連結首部２７ｆの幅より広い間隔をもって対向している。この係合部６ｃ，６ｃの前側端面と、ロック部２７ｂの横棒部２７ｇとが係止可能である。
【００４５】
上記のようなロック部材２７の前記操作部材２０への組み付けは、箱状基部２０ｂのガイド溝２０ｆに対して、前面側からロック部材２７の摺動突起２７ｄが押し込まれて嵌着され、受け部２７ｅは円筒状突起にコイルスプリングによる付勢部材２６が上向きに装着された状態で、操作部材２０の箱状基部２０ｂの中壁２０ｅより下方の空間に挿入され、図６(ｂ)のように組み付けられる。これにより、ロック部材２７は下方のロック位置（図４参照）と、上方のロック解除位置（図５参照）とに上下移動可能であるとともに、ロック部材２７の受け部２７ｅと箱状基部２０ｂの中壁２０ｅとの間に縮装された付勢部材２６の付勢力によって、ロック部材２７は操作部材２０にロック部２７ｂが接近する下方のロック位置の方向に付勢されている。
【００４６】
さらに、上記のようなロック部材２７を装着した操作部材２０が中間ケース６に組み付けられると、下方に付勢されたロック位置でロック部２７ｂが中間ケース６内に配設され、その横棒部２７ｇが係合部６ｃの前端部と係合干渉し、上方のロック解除位置に移動した際に両者の干渉が解除され、さらに、押し込み点火操作に伴い係合部６ｃの上方をロック解除状態のロック部２７ｂの横棒部２７ｇが、縦溝６ｄ内をロック部２７ｂの連結首部２７ｆが移動するように構成されている。
【００４７】
以上のような本実施形態の着火器具１１のロック機構についてその作用を説明する。まず、図４に示す状態が、ロック部材２７が下降したロック位置（放置位置）であり、この状態では、操作部材２０の点火のための移動操作、具体的にはロック部材２７の前面操作部２７ｃを、操作部材２０を押し込むように操作しても、ロック部材２７のロック部２７ｂの横棒部２７ｇが器具本体２の係合部６ｃに当接して点火ロックされ、その押し込み動作は不能で点火操作は行えない。
【００４８】
次に着火器具１１を使用する場合には、図５に示すように、ロック部材２７を操作部材２０の操作方向と直交する方向、つまり、上方のロック解除方向に摺動操作すると、そのロック部２７ｂの横棒部２７ｇが係合部６ｃの前端より上方に移動して干渉が外れ、点火ロックが解除されて、ロック部２７ｂの連結首部２７ｆが縦溝６ｄに合致して操作部材２０の押し込み点火操作が可能となる。この状態を維持したままロック部材２７および操作部材２０を押し込み操作することにより、ガスの供給および放電点火が行われて着火される。
【００４９】
使用を終了するためにロック部材２７の操作部２７ｃから手を離すと、圧電ユニット２２内のスプリングにより操作部材２０は突出移動して初期の位置に戻るとともに、ロック部材２７は付勢部材２６の付勢力によってロック位置に下降移動し、ロック部２７ｂの横棒部２７ｇが係合部６ｃと干渉する図４の点火ロック状態に自動的に復帰する。
【００５０】
＜第３の実施の形態＞
図７はさらに他の実施の形態のロック機構を備えた着火器具の要部断面図、図８はロック解除状態を示す断面図である。
【００５１】
本実施形態の着火器具（他の形態の点火棒）１２は、形態の異なる器具本体４と、該器具本体４の中央から棒状に延びた延長先部７（先端部分は図示省略）とによって構成される。器具本体４は、合成樹脂により成形されたガスタンク部９と、これより前方でほぼ中央で縦に分割された中間ケース６０とで形成され、図７および図８では中間ケース６０の一方を示している。この中間ケース６０は、中央部に指挿入窓６０ａが開口されたリング状に形成されている。
【００５２】
器具本体４の基端側（図で右側）のガスタンク部９は、ブタンガス等の高圧ガスを収容するガス貯蔵室（不図示）を備え、このガス貯蔵室の下部側の壁部分にガスの供給を開閉する前記と同様のバルブ機構８が配設されている。このバルブ機構８は、同様のガス通路を開閉するノズル部材１０、該ノズル部材１０を開操作する回動レバー１４、炎調整つまみ１３を備える。ノズル部材１０の最先端部には、コネクタ部材１７が配設されてガスパイプ１９（図７，８では断面のハッチングを省略している）に接続され、延長先部３の先端部における不図示のガス噴出ノズルに接続され、ガスを送給する。
【００５３】
また、前記バルブ機構８の側方に平行にスライド自在な操作部材３０と、発火装置の一つである圧電ユニット３２が設置されている。操作部材３０は、中間ケース６０の指挿入窓６０ａに臨む開口から内部に摺動自在に支持される箱状基部３０ｂを有し、該箱状基部３０ｂの前面部に、ロック部材２９が操作部分を兼ねて設けられている。
【００５４】
前記圧電ユニット３２は、スライド部３２ａが前記操作部材３０の箱状基部３０ｂの上部側背部に嵌着され、そのスライド部３２ａに突起部３２ｂが設けられ、前記操作部材３０の後退作動に伴ってスライド部３２ａが後退移動して放電電圧を発生し、また、上記突起部３２ｂが略Ｌ字状の回動レバー１４の端部に当接し、これを回動させてノズル部材１０を開方向へ前進移動させる。この圧電ユニット３２の一方の極に接続された端子板３５につながるリード線３３は、図示しない放電電極に接続され、他方の極は前記突起部３２ｂより回動レバー１４、コネクタ部材１７、ガスパイプ１９内に挿入されたリード線３４を経て不図示のガス噴出ノズルに接続される。
【００５５】
前記中間ケース６０は、非操作状態にある操作部材３０の前端上部における指挿入窓６０ａの一側部に、操作部材３０の点火操作方向と平行に配設されたケース壁面の板状部材による係合部６０ｂを備える。この係合部６０ｂの先端側部位にはロック部材２９のロック部２９ｂが挿入可能な貫通孔６０ｃが開口され、係合部６０ｂの前側端面（貫通孔６０ｃの開口後端）が、ロック部材２９のロック部２９ｂと係止可能である。
【００５６】
前記操作部材３０の点火操作をロックまたは解除するロック部材２９は、操作部材３０に装着され、コイルスプリングによる付勢部材２６でロック方向（図の上方）に付勢されている。
【００５７】
ロック部材２９は、操作部材３０の枠部を除く前面全体に、その移動方向と略直交する方向に摺動可能に且つ操作部材３０と離れないように、その操作部分を兼ねて装着されている。このロック部材２９は、略矩形状の基板２９ａの上端部に、上方（ロック移動方向）に延びてピン状に突出したロック部２９ｂを備え、基板２９ａの前表面は湾曲形成され、指掛け用の凹凸形状が設けられた操作部２９ｃが形成されている。また、基板２９ａの背面の上部の両側には、前例と同様に形成された、後方に突出して上下方向に延びる摺動突起２９ｄを備える。さらに、上記基板２９ａの上端部背面には、後方に板状に突出し、下面に付勢部材２６の上端を受ける受け部２９ｅを備える。
【００５８】
一方、前記操作部材３０の箱状基部３０ｂの上半部は凹部３０ｃに形成され、その両側に上下方向に延びるガイド溝３０ｆを備える。このガイド溝３０ｆに対して摺動突起２９ｄを挿入して、ロック部材２９が操作部材３０に組み付けられ、その際、前記受け部２９ｅと凹部３０ｃの底部の中壁３０ｅとの間に付勢部材２６を装着してなる。
【００５９】
上記操作部材３０に対するロック部材２９の組み付けにより、ロック部材２９は上方のロック位置（図７参照）と、下方のロック解除位置（図８参照）とに上下移動可能であるとともに、ロック部材２９の受け部２９ｅと箱状基部３０ｂの中壁３０ｅとの間に縮装された付勢部材２６の付勢力によって、ロック部材２９は操作部材３０からロック部２９ｂが突出するロック位置の方向に付勢される。
【００６０】
さらに、上記のようなロック部材２９を装着した操作部材３０が中間ケース６０に組み付けられると、上方に付勢されたロック位置でロック部２９ｂが中間ケース６０の貫通孔６０ｃに挿入され、係合部６０ｂの前端部と係合干渉し、下方のロック解除位置に移動した際に貫通孔６０ｃよりロック部２９ｂが抜け出して両者の干渉が解除され、さらに、押し込み点火操作に伴い係合部６０ｂの下面に沿ってロック解除状態のロック部２９ｂが移動するように構成されている。
【００６１】
以上のような本実施形態の着火器具１２のロック機構についてその作用を説明する。まず、図７に示す状態が、ロック部材２９が上昇したロック位置（放置位置）であり、この状態では、操作部材３０の点火のための移動操作、具体的にはロック部材２９の前面操作部２９ｃを、操作部材３０を押し込むように操作しても、ロック部材２９のロック部２９ｂが器具本体４の係合部６０ｂに当接して点火ロックされ、その押し込み動作は不能で点火操作は行えない。
【００６２】
次に着火器具１を使用する場合には、図８に示すように、ロック部材２９を操作部材３０の操作方向と直交する方向、つまり、下方のロック解除方向に摺動操作すると、そのロック部２９ｂが係合部６０ｂの前端より下方に移動して干渉が外れ、点火ロックが解除されて操作部材３０の押し込み点火操作が可能となる。この状態を維持したままロック部材２９および操作部材３０を押し込み操作することにより、ガスの供給および放電点火が行われて着火される。
【００６３】
使用を終了するためにロック部材２９の操作部２９ｃから手を離すと、圧電ユニット３２内のスプリングにより操作部材３０は突出移動して初期の位置に戻るとともに、ロック部材２９は付勢部材２６の付勢力によってロック位置に移動し、ロック部２９ｂが貫通孔６０ｃに挿入されて係合部６０ｂと干渉する図７の点火ロック状態に自動的に復帰する。
【００６４】
なお、上記のような各実施形態では、ロック部材２５，２７，２９が操作部材２０，３０の前面の全体に装着されて点火操作の操作部分を兼ねて一体に配設しているが、操作部材２０の前面には、この操作部材に固着された操作部を設け、その一部にロック部材を摺動可能に装着して、操作部材内にロック部材を配設するようにしてもよい。
【００６５】
また、器具本体２，４の係合部６ｂ，６ｃ，６０ｂとロック部材２５，２７，２９のロック部２５ｂ，２７ｂ，２９ｂが係止する位置は、操作部材２０，３０が全く押し込まれていない非操作位置から点火操作が完了する以前の押し込み位置の間における任意の位置に設定可能であり、ロック解除されていない状態である程度の押し込み操作が行われたときに両者が係止してそれ以上の点火操作が不能となるように設けてもよく、つまり、係合部６ｂ，６ｃ，６０ｂの先端位置を後部側にずらせて配設してもよく、図示のように殆ど移動しないように設けてもよい。
【００６６】
また、電気点火を行う発火装置としては、前述の放電電圧を発生させるピエゾ素子を備えた圧電ユニット２２，３２のほか、電池を電源として放電電圧を発生させる放電回路を備えた電池式放電ユニット、電池を電源として発熱線に給電する通電発熱ユニットなどが使用でき、これらの発火装置では操作部材の操作に応じて接点を開閉作動するとともに、操作部材を復帰作動させるスプリングが付設される。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態に係る着火器具の点火ロック状態を示す要部断面図
【図２】図１の点火操作状態を示す要部断面図
【図３】図１のロック機構の分解斜視図および組立状態の斜視図
【図４】本発明の第２の実施の形態に係る着火器具の点火ロック状態を示す要部断面図
【図５】図４の点火操作状態を示す要部断面図
【図６】図４のロック機構の分解斜視図および組立状態の斜視図
【図７】本発明の第３の実施の形態に係る着火器具の点火ロック状態を示す要部断面図
【図８】図７のロック解除状態を示す要部断面図
【符号の説明】
１,11,12 着火器具
2,4 器具本体
3,7 延長先部
5,9 ガスタンク部
6,60 中間ケース
6b,6c,60b 係合部
6d 縦溝
60c 貫通孔
８バルブ機構
20,30 操作部材
22,32 圧電ユニット（発火装置）
25,27,29 ロック部材
25b,27b,29b ロック部
25c,27c,29c 操作部
26 付勢部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ignition device in which a flame is ejected from a gas ejection nozzle by an ignition operation of an operation member. Usually, the lock member is engaged with the device body to perform ignition lock, while the lock is released during use. The present invention relates to a mechanism that can be released and ignited.
[0002]
[Prior art]
An ignition device, such as an ignition rod, can be easily ignited by pushing the operating member, but the lock mechanism can be used to prevent inadvertent ignition or accidental ignition. It is required to install, and so far an ignition device having various mechanisms has been proposed.
[0003]
For example, in Japanese Patent Laid-Open No. 8-61673, a lock member that is ignited and locked by a lock part interfering with a part of an operation member is installed so as to be movable in a direction crossing the moving direction of the operation member. An urging member that urges the urging member in the locking direction is disposed, and the locking member has a release operation portion that can move against the urging member, and the release operation portion is located near the operation portion of the operation member. There is disclosed an ignition device having a mechanism that protrudes from the front.
[0004]
In addition, the lock mechanism disclosed in US Pat. No. 6,217,313 is provided with a slidable lock member at a part of the operation portion of the operation member that performs the ignition operation, and this lock member is moved to the lock position by the urging member. In some cases, the tip of the arm portion extending inside the operation member interferes with a part of the piezoelectric unit to be locked, and when the slide operation is performed to the unlocking position, the interference is removed and the operation member can be operated. It is.
[0005]
[Problems to be solved by the invention]
However, in the former locking mechanism, the locking member and the urging member by the spring that urges the locking member in the locking direction are separately assembled to the instrument main body, which has a difficulty in assembling them. This is an obstacle to improving productivity in mass production. In addition, the ignition operation requires a multistage operation, and there is a difficulty in its operability.
[0006]
That is, it is complicated to assemble the two parts of the lock member and the urging member separately from the operation member, and the urging member needs to be assembled in a state of being deformed to some extent, and other parts are arranged. There is a problem that it is difficult to efficiently assemble these parts inside the instrument body. Further, the unlocking operation at the time of the ignition operation in the normal use state is a projection operation in which the release operation part is separated from the operation member, lacking the linkage between the release operation and the pushing operation of the operation member, and is complicated in many stages. It may be difficult to obtain stable ignition in operation.
[0007]
In the latter lock mechanism, the arm part of the lock member extends in the moving direction of the operation member and interferes with the piezoelectric unit inside the operation member. The movement range of the lock member is reduced, making it difficult to obtain stable operability between the lock position and the release position. In addition, the interference between the arm and the piezoelectric unit is small, making it difficult to ensure a secure lock and release state. When the tip is worn after many uses, the function may be impaired.
[0008]
In view of this point, the present invention performs ignition by operating the operation member, and can perform ignition locking, unlocking, and automatic return while ensuring good assembly, and ignition provided with a lock mechanism with improved operability. The purpose is to provide an instrument.
[0009]
[Means for Solving the Problems]
The ignition device of the present invention includes a device body, a gas tank, a valve mechanism for opening and closing the supply of gas from the gas tank to the gas ejection nozzle, an ignition device for supplying power for electric ignition, and a slide for performing an ignition operation. In an ignition device equipped with a movable operation member,
A lock member that is moved integrally with the operation member in the ignition operation direction and is movable between a lock position and a lock release position; and provided on the lock member so as to extend in the lock movement direction. A locking portion that interferes with an engaging portion formed on the locking member and locks the ignition operation of the operating member; and a biasing member that biases the locking member to a locked position.
In a state where the lock member is operated and the ignition lock is released, the operation member is slid together with the lock member to perform an ignition operation, and the lock member automatically returns to the lock position with the return movement of the operation member. It is characterized by this.
[0010]
It is preferable that the operation member assembled with the lock member and the biasing member is assembled to the instrument body.
[0011]
It is preferable that the lock member is installed integrally with the operation member so as to serve as an operation portion of the operation member.
[0012]
The lock member and the operation member may be combined so that a part of the ignition device can be moved to a position where ignition is possible.
[0013]
The lock member may be disposed in the operation member.
[0014]
On the other hand, it is preferable that the engagement portion of the instrument main body is formed of a member extending in parallel with the ignition operation direction of the operation member, and the lock portion of the lock member is engaged with the distal end portion thereof.
[0015]
It is preferable that the lock portion of the lock member be movable in the ignition operation direction in a state where the unlocked state is held by the engagement portion of the instrument body.
[0016]
The engaging portion of the instrument body may include a longitudinal groove through which the lock portion of the lock member is inserted.
[0017]
Moreover, you may make it form and arrange | position the engaging part of the said instrument main body inside this instrument main body. Moreover, you may make it arrange | position the locking part of the said locking member inside the said instrument main body.
[0018]
The ignition device includes a piezoelectric unit, a battery-type discharge unit, an energization heat generation unit, and the like, and supplies power to perform ignition in accordance with operation of the operation member.
[0019]
In the ignition device of the present invention, when the lock member is in the locked position by the urging member, the lock portion interferes with the engagement portion of the device body, and the movement of the operation member is prevented to prevent the ignition lock. Is going. When the lock member is operated to the release position against the urging member, the lock portion is also moved and the interference with the engaging portion is released, thereby enabling the operation member to be moved. The ejected fuel gas is ignited. When the operation of the operation member and the lock member is released, the lock portion of the lock member moves to a position where it interferes with the engagement portion of the instrument body by the urging of the urging member as the operation member returns and moves. It automatically returns to the ignition lock state, and when not in use, the ignition operation of the operation member is always disabled to prevent inadvertent ignition, thereby obtaining the desired lock function.
[0020]
【The invention's effect】
According to the ignition device of the present invention, since the unlocking operation of the lock member is required prior to the ignition operation of the operation member, it is difficult for a person who does not know the proper usage to unlock, and inadvertent ignition is prevented. In addition, it is possible to improve the reliability by ensuring the locked state in the fire extinguishing state without being left in the unlocked state by automatically returning to the locked state during the return movement. In addition, by extending the lock part of the lock member in the lock movement direction and interfering with the engagement part of the instrument main body to obtain a locked state, a wide movement range of the lock member can be secured, and a reliable locked state is obtained. And excellent operability to the unlocked position. Further, the unlocking operation of the lock member and the pushing operation of the operation member can be performed in a linked manner, and the ignition operation can be performed in a series rather than a multi-stage operation, so that stable ignition with excellent operability can be obtained.
[0021]
Furthermore, the lock member and the urging member can be assembled with the operation member in advance and then incorporated into the instrument main body, so that efficient assembly can be performed, and productivity in mass production can be improved.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0023]
<First Embodiment>
  1 to 3 show an ignition device using an ignition rod according to this embodiment. FIG. 1 is a cross-sectional view of a main part, FIG. 2 is a cross-sectional view of an operating state, and FIG. 3 is a perspective view of a lock mechanism.However, this first embodiment is a reference example and is not included in the present invention.
[0024]
An ignition device (ignition rod) 1 according to this embodiment includes a device main body 2 and an extension tip portion 3 (a tip portion is not shown) extending in a bar shape. The instrument main body 2 is formed of a gas tank portion 5 formed of a synthetic resin and an intermediate case 6 that is vertically divided at the center in front of the gas tank portion. FIGS. 1 and 2 show one of the intermediate cases 6. Yes.
[0025]
On the base end side (right side in the figure) of the instrument main body 2, a gas storage chamber (not shown) for storing a high-pressure gas such as butane gas is provided in the gas tank portion 5, and a gas is formed on the upper wall portion of the gas storage chamber. Is provided with a valve mechanism 8 for opening and closing the supply. The valve mechanism 8 includes a nozzle member 10 interposed in a gas passage through which gas in the gas storage chamber is supplied. The tip of the nozzle member 10 is engaged with one end of a rotating lever 14 for opening the nozzle member 10, and the nozzle member 10 is moved forward by the operation of the rotating lever 14 to open the gas passage. While supplying the gas, the nozzle member 10 is moved backward by a spring disposed in the valve mechanism 8 to close the gas passage and stop the gas supply. The valve mechanism 8 includes a flame adjustment knob 13 protruding to the outside, and the amount of gas supplied, that is, the size of the flame can be adjusted by rotating the valve mechanism 8.
[0026]
Further, a connector member 16 is disposed on the extension line of the most distal end portion of the nozzle member 10 and connected to the gas pipe 18. The gas pipe 18 extends to the tip of the extension tip 3 and is connected to a gas ejection nozzle (not shown) to feed gas.
[0027]
An operation member 20 that is slidable in parallel with the center line of the valve mechanism 8 is disposed on the side of the valve mechanism 8 in the intermediate case 6 of the instrument body 2. A piezoelectric unit 22 that is one of the ignition devices is installed between the gas tank 5 and the gas tank 5.
[0028]
The operation member 20 has a box-like base portion 20b that is slidably supported from the opening of the intermediate case 6, and a lock member 25 described later also serves as an operation portion on the front surface of the box-like base portion 20b. Provided (see FIG. 3). Further, the end of the box-shaped base 20b on the valve mechanism 8 side is provided with a leg 20d extending in the sliding direction. The leg portion 20d is linked to the end portion of the rotating lever 14 during the ignition movement and is rotated.
[0029]
The turning lever 14 is formed in a substantially L shape, is held rotatably around a fulcrum of the intermediate portion, and is turned by the leg portion 20d of the operating member 20, and is used for ignition operation. With this rotation, the nozzle member 10 of the valve mechanism 8 is moved forward so as to be pulled out in the opening direction.
[0030]
The piezoelectric unit 22 feeds a discharge voltage, and a sliding portion 22a that expands and contracts is fitted to the upper side of the inner wall 20e in the box-shaped base portion 20b of the operating member 20, and the operating member 20 The slide portion 22a is moved in a dip with the reverse operation of the motor, and generates a discharge voltage. The lead wire 23 connected to one pole of the piezoelectric unit 22 is connected to a discharge electrode (not shown). The other pole is connected to the gas ejection nozzle via a path (not shown).
[0031]
The intermediate case 6 is integrally provided with a protective frame 6 a that surrounds a space for inserting a finger on the front side of the operation member 20 on the side of the portion that is linearly connected to the extension portion 3. Further, the inner surface of the intermediate case 6 (the instrument main body 2) in the upper part of the front end of the operation member 20 in a non-operation state is disposed so as to protrude in the center direction in parallel with the ignition operation direction of the operation member 20 from both sides. Engaging portions 6b, 6b are provided by plate-like members. As shown in FIG. 3, the inner side surfaces of the engaging portions 6b, 6b on both sides are close to each other with a narrower width than a locking portion 25b of a locking member 25 described later at the center, and the front sides of the engaging portions 6b, 6b. The end face can be locked with the lock portion 25b.
[0032]
Next, a lock mechanism for restricting the ignition operation of the operation member 20 is installed on the ignition device 1 having the above structure. The lock mechanism includes a lock member 25 attached to the operation member 20 for locking or releasing the ignition operation of the operation member 20, and a biasing member 26 using a coil spring.
[0033]
The lock member 25 is attached to the entire front surface of the operation member 20 so as to be slidable in a direction substantially perpendicular to the moving direction and to be not separated from the operation member 20. As shown in FIG. 3A, the lock member 25 includes a lock portion 25b that extends upward (in the lock movement direction) and protrudes at the upper end of a substantially rectangular substrate 25a. An operation portion 25c (a lock release operation portion and an ignition operation portion) that is formed in a curved shape and provided with uneven shapes for hooking fingers is formed. Further, on both sides of the upper part of the back surface of the substrate 25a, there are provided sliding projections 25d protruding rearward and extending in the vertical direction, and the sliding projections 25d are formed with retaining projections protruding laterally at the tip. . Further, the back surface of the substrate 25a below the sliding protrusion 25d is provided with a receiving portion 25e that protrudes rearward in a plate shape and is provided with a cylindrical protrusion on the lower surface.
[0034]
On the other hand, the front end of the box-shaped base 20b of the operation member 20 is provided with guide grooves 20f extending in the vertical direction on both sides. The sliding protrusion 25d of the lock member 25 is pushed into and fitted into the guide groove 20f from the front side. At this time, the receiving portion 25e is attached to the cylindrical protrusion with the biasing member 26 by a coil spring downward. In this state, the operation member 20 is inserted into a space below the middle wall 20e of the box-shaped base portion 20b and assembled as shown in FIG.
[0035]
By assembling the lock member 25 to the operation member 20, the lock member 25 can be moved up and down between an upper lock position (see FIG. 1) and a lower lock release position (see FIG. 2). Due to the urging force of the urging member 26 that is retracted between the receiving portion 25e and the opposing inner wall of the box-shaped base portion 20b, the lock member 25 is attached in the direction of the upper lock position where the lock portion 25b protrudes from the operation member 20. It is energized.
[0036]
Further, when the operation member 20 fitted with the lock member 25 as described above is assembled to the intermediate case 6, the lock portion 25b is disposed in the intermediate case 6 at the lock position biased upward, and the engagement portion 6b Interference with the front end part is canceled when moving to the lower unlocking position, and the lock part 25b in the unlocked state moves along the lower surface of the engaging part 6b in accordance with the push ignition operation. Is configured to do.
[0037]
The operation of the locking mechanism of the ignition device 1 of the present embodiment as described above will be described. First, the state shown in FIG. 1 is a lock position (a leaving position) in which the lock member 25 is raised. In this state, a moving operation for ignition of the operation member 20, specifically, a front operation portion of the lock member 25 is performed. Even when the operation member 20 is pushed in, the lock portion 25b of the lock member 25 comes into contact with the engagement portion 6b of the instrument main body 2 and is ignition-locked. The push-in operation is impossible and the ignition operation cannot be performed. .
[0038]
Next, when using the ignition device 1, as shown in FIG. 2, when the lock member 25 is slid in the direction orthogonal to the operation direction of the operation member 20, that is, in the downward unlocking direction, the lock portion 25b moves downward from the front end of the engaging portion 6b, the interference is removed, the ignition lock is released, and the operation member 20 can be pushed and ignited. By pressing the lock member 25 and the operation member 20 while maintaining this state, gas supply and discharge ignition are performed and ignition is performed.
[0039]
When the operation member 25 is released from the operation portion 25c of the lock member 25 to end the use, the operation member 20 protrudes and returns to the initial position by the spring in the piezoelectric unit 22, and the lock member 25 is It moves to the lock position by the urging force, and automatically returns to the ignition lock state of FIG. 1 where the lock portion 25b interferes with the engagement portion 6b.
[0040]
<Second Embodiment>
FIG. 4 is a cross-sectional view of an essential part of an ignition device provided with a lock mechanism according to another embodiment, FIG. 5 is a cross-sectional view showing an operating state, and FIG. 6 is a perspective view of the lock mechanism.
[0041]
The lock mechanism in the ignition device 11 of the present embodiment is different from the lock member 27 and the engagement portion 6c in the form of the operation member 20, the piezoelectric unit 22 (ignition device), the biasing member 26, and the like in the first embodiment. It is comprised similarly to a form, attaches | subjects the same code | symbol to the same part, and abbreviate | omits description.
[0042]
Further, in the present embodiment, the lock position and the lock release position of the lock member 27 are configured to be opposite to those of the lock member 25 of the first embodiment described above.
[0043]
  The lock member 27 is mounted on the entire front surface of the operation member 20 so as to be slidable in a direction substantially orthogonal to the moving direction and not to be separated from the operation member 20. As shown in FIG. 6A, the lock member 27 includes a substantially T-shaped lock portion 27b that extends upward (in the lock movement direction) and protrudes at an upper end portion of a substantially rectangular substrate 27a. The front surface is curved and formed with an operation portion 27c provided with a concavo-convex shape for a finger. In addition, on both sides of the upper part of the back surface of the substrate 27a, there are provided sliding protrusions 27d that protrude rearward and extend in the vertical direction. . Further, in the vicinity of the lower end portion of the back surface of the substrate 27a, there is provided a receiving portion 27e protruding rearward in a plate shape and provided with a cylindrical protrusion on the upper surface. The lock portion 27b is a narrow connecting neck portion erected at the center of the upper end of the substrate 27a.27fWhen,ThatA horizontal bar that is connected to both sides of the upper end.27gAnd provided in a substantially T shape.
[0044]
  On the other hand, as shown in FIG. 6 (a), the engaging portions 6c, 6c formed by the plate-like member formed in the intermediate case 6 are formed in the intermediate case 6 (the instrument main body 2) at the upper front end of the operation member 20 in the non-operation state. ) Projecting in the center direction parallel to the ignition operation direction of the operation member 20 from both sides, and the inner side surfaces of the engagement portions 6c, 6c on both sides are formed with a vertical groove 6d in the center portion. Connecting neck portion of the lock portion 27b27fIt is opposed with a wider interval than the width of. Front end surfaces of the engaging portions 6c, 6c and the horizontal bar portion of the lock portion 27b27gCan be locked.
[0045]
Assembling the lock member 27 to the operation member 20 as described above is performed by inserting the sliding protrusion 27d of the lock member 27 into the guide groove 20f of the box-shaped base portion 20b by being pushed in from the front surface side. Reference numeral 27e denotes a state in which a biasing member 26 by a coil spring is mounted upward on a cylindrical protrusion, and is inserted into a space below the middle wall 20e of the box-shaped base portion 20b of the operation member 20, as shown in FIG. Assembled. As a result, the lock member 27 can move up and down between a lower lock position (see FIG. 4) and an upper lock release position (see FIG. 5), and the receiving portion 27e of the lock member 27 and the box-shaped base portion 20b. Due to the urging force of the urging member 26 that is compressed between the middle wall 20e, the lock member 27 is urged in the direction of the lower lock position where the lock portion 27b approaches the operation member 20.
[0046]
  Further, when the operation member 20 with the lock member 27 as described above is assembled to the intermediate case 6, the lock portion 27b is disposed in the intermediate case 6 at the lock position biased downward,ThatHorizontal bar27gEngages with the front end of the engaging portion 6c and moves to the upper unlocking position, and the interference between the two is released. Further, the upper portion of the engaging portion 6c is unlocked in accordance with the pushing ignition operation. Horizontal bar part of part 27b27gHowever, in the longitudinal groove 6d, the connecting neck portion of the lock portion 27b27fIs configured to move.
[0047]
  The operation of the lock mechanism of the ignition device 11 of the present embodiment as described above will be described. First, the state shown in FIG. 4 is a lock position (a leaving position) in which the lock member 27 is lowered. In this state, a moving operation for ignition of the operation member 20, specifically, a front operation portion of the lock member 27 is performed. Even when the operation member 20 is operated to push the operation member 20, the horizontal bar portion of the lock portion 27 b of the lock member 2727gComes into contact with the engaging portion 6c of the instrument body 2 and is locked in an ignition state. The pushing operation is impossible and the ignition operation cannot be performed.
[0048]
  Next, when using the ignition device 11, as shown in FIG. 5, when the lock member 27 is slid in a direction orthogonal to the operation direction of the operation member 20, that is, in the upper unlocking direction, the lock portion 27b horizontal bar27gMoves upward from the front end of the engaging portion 6c, the interference is released, the ignition lock is released, and the connecting neck portion of the locking portion 27b is released.27fIs aligned with the longitudinal groove 6d, and the push-in ignition operation of the operation member 20 becomes possible. By pressing the lock member 27 and the operation member 20 while maintaining this state, gas supply and discharge ignition are performed and ignition is performed.
[0049]
  When the hand is released from the operation portion 27c of the lock member 27 to finish the use, the operation member 20 protrudes and returns to the initial position by the spring in the piezoelectric unit 22, and the lock member 27 is moved to the biasing member 26. The horizontal bar portion of the lock portion 27b is moved downward to the lock position by the urging force.27gAutomatically returns to the ignition lock state of FIG. 4 interfering with the engaging portion 6c.
[0050]
<Third Embodiment>
FIG. 7 is a cross-sectional view of an essential part of an ignition device provided with a lock mechanism according to still another embodiment, and FIG. 8 is a cross-sectional view showing an unlocked state.
[0051]
An ignition device (an ignition rod of another form) 12 according to the present embodiment is configured by a tool body 4 having a different form and an extension tip portion 7 (a tip portion is not shown) extending in a rod shape from the center of the tool body 4. Is done. The instrument body 4 is formed of a gas tank portion 9 formed of a synthetic resin and an intermediate case 60 that is vertically divided at the center in front of the instrument body. FIGS. 7 and 8 show one of the intermediate cases 60. Yes. The intermediate case 60 is formed in a ring shape with a finger insertion window 60a opened at the center.
[0052]
The gas tank portion 9 on the base end side (right side in the figure) of the instrument body 4 includes a gas storage chamber (not shown) that stores high-pressure gas such as butane gas, and supplies gas to the lower wall portion of the gas storage chamber. A valve mechanism 8 similar to that described above for opening and closing is provided. The valve mechanism 8 includes a nozzle member 10 that opens and closes a similar gas passage, a turning lever 14 that opens the nozzle member 10, and a flame adjustment knob 13. A connector member 17 is disposed at the most distal end of the nozzle member 10 and connected to a gas pipe 19 (cross-sectional hatching is omitted in FIGS. 7 and 8). It is connected to the gas jet nozzle and feeds gas.
[0053]
An operation member 30 that is slidable in parallel to the side of the valve mechanism 8 and a piezoelectric unit 32 that is one of the ignition devices are installed. The operation member 30 has a box-shaped base 30b that is slidably supported from the opening facing the finger insertion window 60a of the intermediate case 60, and the lock member 29 is disposed on the front surface of the box-shaped base 30b. Is also provided.
[0054]
The piezoelectric unit 32 has a slide portion 32a fitted to the upper back portion of the box-shaped base portion 30b of the operation member 30, and a projection portion 32b is provided on the slide portion 32a. The slide portion 32a moves backward to generate a discharge voltage, and the protrusion 32b comes into contact with the end portion of the substantially L-shaped rotation lever 14 to rotate the nozzle member 10 in the opening direction. Move forward. The lead wire 33 connected to the terminal plate 35 connected to one pole of the piezoelectric unit 32 is connected to a discharge electrode (not shown), and the other pole is connected to the rotating lever 14, the connector member 17, and the gas pipe 19 from the protrusion 32b. It is connected to a gas ejection nozzle (not shown) via a lead wire 34 inserted therein.
[0055]
The intermediate case 60 is engaged by a plate-like member on the case wall surface disposed in one side portion of the finger insertion window 60a at the upper front end of the operation member 30 in a non-operation state and parallel to the ignition operation direction of the operation member 30. A joint 60b is provided. A through hole 60c into which the lock portion 29b of the lock member 29 can be inserted is opened at the front end side portion of the engagement portion 60b, and the front end surface (open rear end of the through hole 60c) of the engagement portion 60b is the lock member 29. The locking portion 29b can be locked.
[0056]
The lock member 29 that locks or releases the ignition operation of the operation member 30 is mounted on the operation member 30 and is urged in the lock direction (upward in the figure) by the urging member 26 by a coil spring.
[0057]
The lock member 29 is mounted on the entire front surface excluding the frame portion of the operation member 30 so as to be slidable in a direction substantially orthogonal to the moving direction and also to be separated from the operation member 30. . The lock member 29 is provided with a lock portion 29b that extends upward (in the lock movement direction) and protrudes in a pin shape at the upper end of a substantially rectangular substrate 29a. The front surface of the substrate 29a is curved, An operation portion 29c having an uneven shape is formed. In addition, on both sides of the upper part of the back surface of the substrate 29a, there are provided sliding projections 29d formed in the same manner as in the previous example and projecting rearward and extending in the vertical direction. Further, a rear surface of the upper end portion of the substrate 29a is provided with a receiving portion 29e that protrudes rearward and receives the upper end of the biasing member 26 on the lower surface.
[0058]
On the other hand, the upper half of the box-shaped base 30b of the operation member 30 is formed in the recess 30c, and has guide grooves 30f extending in the vertical direction on both sides thereof. The sliding protrusion 29d is inserted into the guide groove 30f, and the lock member 29 is assembled to the operation member 30. At this time, the urging member is interposed between the receiving portion 29e and the inner wall 30e at the bottom of the concave portion 30c. 26 is attached.
[0059]
By assembling the lock member 29 to the operation member 30, the lock member 29 can be moved up and down between an upper lock position (see FIG. 7) and a lower lock release position (see FIG. 8). Due to the urging force of the urging member 26 that is retracted between the receiving portion 29e and the middle wall 30e of the box-shaped base 30b, the lock member 29 is urged in the direction of the lock position where the lock portion 29b protrudes from the operation member 30. Is done.
[0060]
Further, when the operation member 30 fitted with the lock member 29 as described above is assembled to the intermediate case 60, the lock portion 29b is inserted into the through hole 60c of the intermediate case 60 at the locked position biased upward, and is engaged. When engaging with the front end portion of the portion 60b and moving to the lower unlocking position, the lock portion 29b comes out of the through hole 60c and the interference between the two is released. The lock portion 29b in the unlocked state moves along the lower surface.
[0061]
The operation of the lock mechanism of the ignition device 12 of the present embodiment as described above will be described. First, the state shown in FIG. 7 is a lock position (a leaving position) in which the lock member 29 is raised. In this state, a moving operation for ignition of the operation member 30, specifically, a front operation portion of the lock member 29 is performed. Even if 29c is operated so as to push in the operation member 30, the lock portion 29b of the lock member 29 comes into contact with the engagement portion 60b of the instrument main body 4 and is locked in an ignition lock. .
[0062]
Next, when using the ignition device 1, as shown in FIG. 8, when the lock member 29 is slid in the direction orthogonal to the operation direction of the operation member 30, that is, in the downward unlocking direction, the lock portion 29b moves downward from the front end of the engaging portion 60b, the interference is released, the ignition lock is released, and the operation member 30 can be pushed and ignited. By pressing the lock member 29 and the operation member 30 while maintaining this state, gas supply and discharge ignition are performed and ignition is performed.
[0063]
When the operation member 29 is released from the operation portion 29c of the lock member 29 to end the use, the operation member 30 protrudes and returns to the initial position by the spring in the piezoelectric unit 32, and the lock member 29 moves to the biasing member 26. The urging force moves to the lock position, and the lock portion 29b is automatically inserted into the ignition lock state of FIG. 7 which is inserted into the through hole 60c and interferes with the engagement portion 60b.
[0064]
In each of the above-described embodiments, the lock members 25, 27, and 29 are attached to the entire front surface of the operation members 20 and 30 and are integrally disposed so as to serve as an operation part of the ignition operation. An operation portion fixed to the operation member may be provided on the front surface of the member 20, and a lock member may be slidably mounted on a part of the operation portion, and the lock member may be disposed in the operation member.
[0065]
Further, the operation members 20 and 30 are not pushed in at the positions where the engaging portions 6b, 6c and 60b of the instrument main bodies 2 and 4 and the lock portions 25b, 27b and 29b of the lock members 25, 27 and 29 are locked. It can be set to any position between the non-operating position and the pushing position before the ignition operation is completed. When a certain amount of pushing operation is performed in the unlocked state, both are locked and beyond. May be provided so that the ignition operation is impossible, that is, the tip positions of the engaging portions 6b, 6c, 60b may be shifted to the rear side, and provided so as not to move as shown in the figure. May be.
[0066]
In addition to the above-described piezoelectric units 22 and 32 having piezoelectric elements that generate a discharge voltage, a battery-type discharge unit including a discharge circuit that generates a discharge voltage using a battery as a power generation device that performs electric ignition, An energizing heat generating unit that feeds heat to the heating wire using a battery as a power source can be used. In these ignition devices, a spring that opens and closes the contact according to the operation of the operation member and returns the operation member is attached.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part showing an ignition lock state of an ignition device according to a first embodiment of the present invention.
2 is a cross-sectional view of the main part showing the ignition operation state of FIG. 1;
3 is an exploded perspective view and an assembled perspective view of the locking mechanism of FIG.
FIG. 4 is a cross-sectional view of an essential part showing an ignition lock state of an ignition device according to a second embodiment of the present invention.
5 is a cross-sectional view of the main part showing the ignition operation state of FIG. 4;
6 is an exploded perspective view and an assembled perspective view of the lock mechanism of FIG. 4;
FIG. 7 is a cross-sectional view of a main part showing an ignition lock state of an ignition device according to a third embodiment of the present invention.
8 is a cross-sectional view of the main part showing the unlocked state of FIG. 7;
[Explanation of symbols]
1,11,12 ignition equipment
2,4 Instrument body
3,7 Extension point
5,9 Gas tank
6,60 Intermediate case
6b, 6c, 60b Engagement part
6d vertical groove
60c through hole
8 Valve mechanism
20,30 Operation member
22,32 Piezoelectric unit (ignition device)
25, 27, 29 Lock member
25b, 27b, 29b Lock part
25c, 27c, 29c operation unit
26 Biasing member

Claims

An instrument body, a gas tank, a valve mechanism that opens and closes the supply of gas from the gas tank to the gas ejection nozzle, an ignition device that supplies power for electric ignition, and a slidable operation member that performs an ignition operation In the ignition device provided,
An engaging portion having a groove provided in the instrument body and extending in parallel with the ignition operation direction of the operation member;
A horizontal bar portion and a lock that move in the ignition operation direction integrally with the operation member at the time of operation and are movable to a lock position and a lock release position that lock the ignition operation, and abut against the engagement portion at the time of lock A lock member having a lock portion provided with a neck portion that moves in the groove along with the movement of the operation member at the time of release ;
A biasing member for biasing the locking member into the locked position,
Move the locking member against the biasing member, the engaging portion and thereby release the engagement between the lateral bar portion is matched to the neck portion to said groove, said operating member with said locking member ignition instrument performs ignition operation to slide, the locking member along with the return movement of the operating member, characterized in that automatically returns to the locked position.

An instrument body, a gas tank, a valve mechanism that opens and closes the supply of gas from the gas tank to the gas ejection nozzle, an ignition device that supplies power for electric ignition, and a slidable operation member that performs an ignition operation In the ignition device provided,
An engagement portion having a through-hole formed in the instrument body and extending parallel to the ignition operation direction of the operation member;
A lock that moves in the direction of the ignition operation together with the operation member during operation, and that can be moved to a lock position and a lock release position that lock the ignition operation, and that is inserted into the through-hole of the engaging portion when locked. A locking member having a portion;
A biasing member that biases the lock member to the locked position;
The lock member is moved against the urging member, the interference between the lock portion and the through hole is released, and the operation member is slid together with the lock member to perform an ignition operation. wear fire appliance the locking member along with the return movement you characterized in that automatically returns to the locked position.