JP2004358043A

JP2004358043A - Safety device for fire extinguisher

Info

Publication number: JP2004358043A
Application number: JP2003161925A
Authority: JP
Inventors: Masabumi Sonoda; 正文園田; Tadashi Matsuura; 忠松浦
Original assignee: Yamato Protec Corp
Current assignee: Yamato Protec Corp
Priority date: 2003-06-06
Filing date: 2003-06-06
Publication date: 2004-12-24
Anticipated expiration: 2023-06-06
Also published as: JP4304011B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety device for a fire extinguisher preventing an unexpected fire extinguishing chemical jetting-out accident by securing a sealing function of a safety plug 17 and preventing the falling of a rising/falling rod 14 by just pulling out the safety plug 17. <P>SOLUTION: A sealing device 22 is inserted and mounted across an overhang part 20 of the safety plug 17 and the upper wall part 9a of a starting lever 9 so as to be prevented from being pulled out and the sealing device 22 is provided with a weak part 23 torn off by pulling out the safety plug 17 so as to be non-reused. Engagement projections are provided in one side or both sides of a free upper end part of the raising/falling rod 14, the tilting of the raising/falling rod 14 at an angular position of an erected attitude is restricted by a frictional force which is generated from contact surfaces between the engagement projections and one side wall part 9c or both side wall parts of the starting lever 9, and the raising/falling rod 14 is so constituted as to tilt by a pushing-down force overcoming the frictional force of the starting lever 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、加圧式もしくは蓄圧式の消火器の安全装置に係り、より詳しくは安全栓まわりの構造の改良に関する。
【０００２】
【従来の技術】
たとえば、図６、図７に示すように、この種の消火器の上方ヘッド部に取り付けられた起動レバー９には不時の作動を防止するために安全栓（安全ピン）１７が取り付けられている。安全栓１７は、起動レバー９に設けた開口２１にこれの上方から抜き差し可能に取り付けられる一方、起動レバー９と固定レバー７との間に起動レバー９を開き状態に突っ張ってロックする起倒杆１４が介在されており、安全栓１７が起動レバー９に差し込まれるとともに起倒杆１４に係合すると該起倒杆１４が傾倒防止されて起動レバー９のロック状態を維持する起立姿勢に保持されるように構成されている（例えば、特許文献１参照。）。そして、図７に示すように起動レバー９には、安全栓引抜き確認用の封じ紙４０が安全栓１７を跨いで貼付されている。
かくして、図８に示すように、安全栓１７を引き抜くと、封じ紙４０のミシン目加工部が破れると同時に、起倒杆１４が倒れ、起動レバー９の閉じ回動操作を許容し、この回動操作により消火薬剤を放出できるようになっている。
【０００３】
【特許文献１】
実公昭６２−４３５７１号公報
【０００４】
【発明が解決しようとする課題】
しかるに、安全栓１７を跨いで起動レバー９に封じ紙４０を貼付している上記消火器では、封じ紙４０が消火器輸送途上で振動を受けたり、設置時に他物と接触したりすることで、安全栓１７を引き抜く操作を行っていないにもかかわらず、封じ紙４０のミシン目加工部が千切れてしまって封じ機能を失っていることがあった。
また、安全栓１７を引き抜くと起倒杆１４が倒れてしまう上記消火器では、一度安全栓１７を引き抜くと起倒杆１４が倒れ、再度安全栓１７をセットする場合には起倒杆１４を起こして安全栓１７を起動レバー９の開口２１から差し込んで起倒杆１４に係合する必要がある。しかしながら、こうした操作に精通していない人や悪戯行為者等が安全栓１７を引き抜くと、起倒杆１４が倒れたままの状態で安全栓１７を起動レバー９の開口２１に差し込んだ状態を正常なセット状態であると勘違いし、その状態で放置していた。かかる放置状態下では、不慮に消火器が起動レバー９を閉じるように転倒したり、ユーザーが、そのような安全栓１７の不完全なセット状態にあることを気付かないまま起動・固定レバー９・７を握って消火器を移動させたりすると、消火薬剤が放出してしまうという不慮の事故に遭遇することがあった。
このような事由によりユーザーとメーカーとの間でトラブルの発生を招いていた。
【０００５】
本発明は、上記のような問題を解消するためになされたものであり、その目的とするところは、従来の封じ紙のごとく輸送途上等で不用意に封じ機能を失うことがなくて安全栓の封じ機能を確保できるようにし、また安全栓を抜いただけでは起倒杆が倒れることのない安全対策を講じることにより不慮の消火薬剤放出事故を防止できるようにし、もってユーザーとメーカー間でのトラブル発生の減少を図れる消火器の安全装置を提供することにある。
【０００６】
【課題を解決するための手段】
本発明の前提とする消火器の安全装置は、消火薬剤が充填された本体容器（１）と、この本体容器の上方ヘッド部に固定された固定レバー（７）と、この固定レバーに枢軸（８）回りに開閉回動自在に枢着された起動レバー（９）と、前記固定レバーに対し起立姿勢と傾倒姿勢とにわたって枢軸（１６）回りに回動自在に枢着され、その起立姿勢で自由上端部（１４ａ）を前記起動レバー（９）の下面側にその長手方向に沿うよう設けた溝（１０）内の上壁部（９ａ）下面に対し突っ張り状態に当接させて該起動レバー（９）を開き状態にロックし、傾倒姿勢でその自由上端部（１４ａ）を前記上壁部（９ａ）下面から離反して該起動レバー（９）の閉じ回動を許す起倒杆（１４）と、前記起動レバー（９）の上壁部（９ａ）に設けた開口（２１）にこれの上方から抜き差し可能に差し込まれ、その差込みにより前記起立姿勢の起倒杆（１４）に係合して該起倒杆（１４）の傾倒を防止する安全栓（１７）と、を備えたものである。
【０００７】
そのうえで、請求項１に係る発明は、前記安全栓（１７）の封じ具（２２）が、前記起動レバー（９）の上壁部（９ａ）とこの上壁部の上に重合する前記安全栓（１７）の張出部（２０）とにわたって貫通し、かつ抜止め状に差し込み装着されており、この封じ具（２２）に、前記安全栓（１７）を引き抜くことで再使用不能に引きちぎれる弱体部（２３）が設けられていることに特徴を有するものである。
この場合において、前記封じ具（２２）は、請求項２記載の発明のように、前記安全栓（１７）の張出部（２０）および前記起動レバー（９）の上壁部（９ａ）にそれぞれ互いに一致するように設けた貫通孔（２４）（２５）に挿通可能な軸部（２６）と、この軸部の上端に張出状に設けられて前記張出部（２０）の貫通孔（２４）の上端開口部周辺上に重なり合う径大な頭部（２７）、および前記軸部（２６）の先端に設けられて前記上壁部（９ａ）の貫通孔（２５）の下端開口部周辺上に抜け止め状に係合する抜止め膨大部（２８）とを有する形に形成するとともに、前記頭部（２７）と軸部（２６）との連接部、もしくは前記軸部（２６）の中間部に前記弱体部（２３）を形成することができる。
【０００８】
請求項３に係る発明は、前記起倒杆（１４）の自由上端部（１４ａ）と、前記起動レバー（９）の溝（１０）内の一側壁部（９ｂ又は９ｃ）、もしくは両側壁部（９ｂ）（９ｃ）との対向面間に、前記起倒杆（１４）が起立姿勢の角度位置で傾倒するのを規制する摩擦係合手段（３１）が設けられ、かつ該摩擦係合手段（３１）による傾倒規制状態が前記起動レバー（９）を閉じ回動することで解除されるように構成されていることに特徴を有するものである。
この場合において、請求項４記載の発明のように、前記摩擦係合手段（３１）は、前記起倒杆（１４）の自由上端部（１４ａ）、または前記起動レバー（９）の一側壁部（９ｂ又は９ｃ）もしくは両側壁部（９ｂ）（９ｃ）のいずれか一方に突設され、他方に対して擦り合う係合突起（３２）により構成することができる。
【０００９】
【作用】
請求項１、２に係る発明によれば、封じ具は安全栓の張出部と起動レバーの上壁部とにわたって貫通し、かつ抜止め状に差し込まれる装着形態を採っているので、従来の封じ紙のごとく輸送途上の振動等で不用意に弱体部がちぎれて封じ機能を失うようなことはなくて封じ機能を確実に維持できる。
【００１０】
請求項３、４に係る発明によれば、起倒杆の自由上端部と起動レバーの一側壁部もしくは両側壁部との対向面間に設けた摩擦係合手段により、起倒杆が起立姿勢の角度位置で傾倒するのを規制しているので、安全栓が抜かれだけでは起倒杆は倒れることがない。したがって、誤ってあるいは悪戯等により安全栓が抜かれたまま放置されても起動レバーは不用意に作動することはなく、また安全栓が一旦抜かれても起倒杆は倒れていないので、再度安全栓は元通り起倒杆に差し込み係合することが可能となるため、その後のユーザーによる消火器の移動等の取扱過程や消火器の不慮の転倒等により消火薬剤が不用意に放出するという事故を防止できることになる。
【００１１】
【発明の実施の形態】
以下、本発明の好適な実施形態を図面に基づき説明する。図１は本発明の一実施例を示す消火器の安全装置の縦断面図、図２は安全栓を抜いた直後の状態を図１に対応して示す縦断面図、図３は図１におけるＡ矢視図、図４の（ａ）は封じ具の平面図、同図の（ｂ）は封じ具のＢ−Ｂ線断面図、同図の（ｃ）は封じ具の底面図である。
【００１２】
図１において、消火薬剤が充填される本体容器１の上方ヘッド部にはバルブ２をバルブキャップ３で取り付け、バルブ２の下面側には消火薬剤を放射する圧力源である加圧用ガス容器４が固定されており、加圧用ガス容器４の上方のバルブ２内には、使用時に加圧用ガス容器４の封板５を破るために下端６ａを尖らせた破壊針棒６が上下動自在に組み込まれている。バルブ２の上部には固定レバー７と、この固定レバー７の上方に対向配備され、該固定レバー７の基部に枢軸８により基部を回動自在に枢着された起動レバー９とが設けられている。起動レバー９はその下面側に溝１０をその長手方向に沿って形成すべく上壁部９ａと両側壁部９ｂ，９ｃとを有する断面溝形状に形成されている。破壊針棒６の上端は起動レバー９の一部９ｄに係止されている。
【００１３】
また、バルブ２の下面側にはサイホン管１１が取り付けられ、バルブ２の一側部に消火器ホース１２が接続され、サイホン管１１の上方のバルブ２内にはサイホン管１１の上端と消火器ホース１２とを連通する連通路１３が形成されている。
【００１４】
起動レバー９の不用意な作動を防止するために起倒杆１４が設けられている。この起倒杆１４は、耐摩耗性に優れるポリアセタール系樹脂やポリアミド系樹脂等のプラスチック成形品であって、その上方が自由上端部１４ａとされ、前後に栓受け溝１５，１５が上下縦方向に形成されるとともに、その下端基部１４ｂが固定レバー７に対して枢軸１６をもって枢着されている。かくして起倒杆１４は、自由上端部１４ａを起動レバー９の上壁部９ａの下面に対し突っ張り状態に当接して該起動レバー９を開き姿勢にロックする起立姿勢と、起動レバー９の閉じ回動に伴い自由上端部１４ａが上壁部９の下面を滑りながら固定レバー７の上に倒れる傾倒姿勢とにわたって枢軸１６回りに回動自在である。
【００１５】
起倒杆１４の倒れを防止するための安全栓１７は、金属棒からなる２本の直線部１８ａ，１８ｂと、この直線部１８ａ、１８ｂの上端に連続して環状に曲げられた環状部１８ｃとを有し、環状部１８ｃにはプラスチック製の把手１９を一体に被覆成形してなる。把手１９の下端には起動レバー９の上壁部９ａ上に当接重合する張出部２０を一体に形成している。この安全栓１７は２本の直線部１８ａ、１８ｂを起動レバー９の上壁部９ａに設けた開口２１の上方から差し込まれ、起倒杆１４の栓受け溝１５，１５に挿入係合することにより該起倒杆１４の傾倒を防止する。
【００１６】
本発明は、上記構成の消火器において、安全栓１７の封じ具２２が安全栓１７の張出部２０と、起動レバー９の上壁部９ａとにわたって貫通し、かつ抜止め状に差し込み装着されており、この封じ具２２に、安全栓１７を引き抜くことで再使用不能に引きちぎれる弱体部２３が設けられていることに特徴を有する。
【００１７】
具体的には、封じ具２２はプラスチック成形品であって、図１および図４の（ａ）〜（ｃ）に示すように、安全栓１７の張出部２０および起動レバー９の上壁部９ａにそれぞれ互いに一致するように設けた貫通孔２４・２５に挿通可能な軸部２６と、この軸部２６の上端に張出部２０の貫通孔２４の孔径より径大に張り出すよう設けられて、貫通孔２４の上端開口部周辺上に重なり合う頭部２７、および軸部２６の先端に上壁部９ａの貫通孔２５の孔径より僅かに径大に張り出すよう設けられて、貫通孔２５の下端開口部周辺上に抜け止め状に係合する抜止め膨大部２８とを有する形に形成するとともに、軸部２６の中間部に引きちぎり易い弱体部２３を括れ状に形成している。封じ具２２の先端の抜止め膨大部２８は先細のテーパ２８ａを付けた形に形成するとともに、弱体部２３より先側の軸部２６は割り溝２９を入れて弾性変形し易く形成する。これによって、封じ具２２の軸部２６先端の抜止め膨大部２８が起動レバー９の貫通孔２５に対して弾性により縮径変形しながら挿入し易く、挿入後は抜止め膨大部２８が弾性復元作用により拡径して貫通孔２５の下端開口部周辺上に抜止め状に係合できるようになっている。
【００１８】
封じ具２２の弱体部２３は、上記実施例に代えて、図５の（ａ）〜（ｃ）に示すように、軸部２６の上端部２６ａと頭部２７との連接部、すなわち軸部２６の上端部２６ａの周面と頭部２７の孔２７ａの内周面との間が、安全栓１７を引き抜くことで引きちぎれる細い繋がり部３０でつながれた形に形成するものであってもよい。なお、図５に示す封じ具２２の弱体部２３以外の他の構成は図４の封じ具２２の場合と同様に構成される。
【００１９】
また、本発明は、図３に示すように、起倒杆１４の自由上端部１４ａと、起動レバー９の下面側に設けた溝１０内の一側壁部９ｂ又は９ｃ、もしくは両側壁部９ｂ，９ｃとの対向面間に、起倒杆１４が起立状態に保持されて倒れるのを規制する摩擦係合手段３１を設けてあることに特徴を有する。摩擦係合手段３１は、図３に示す具体例では、起倒杆１４の自由上端部１４ａの両側部に係合突起３２，３２を一体に突設し、起倒杆１４が起立姿勢の角度位置にあるとき該係合突起３２，３２が起動レバー９の両側壁部９ｂ，９ｃの各内面に対して強く擦り合って、この擦り合いにより生じる摩擦力により起倒杆１４が、安全栓１７に依存することなく、それ自身でも自由に倒れることがないように構成されている。
図示省略するが、係合突起３２は起倒杆１４の自由上端部１４の一側部のみに突設し、この係合突起３２を起動レバー９の一側壁部９ｂ又は９ｃの内面に対し強く擦り合うように構成することもできる。
ただし、かかる起動レバー９の一側壁部９ｂ又は９ｃ、もしくは両側壁部９ｂ，９ｃの内面と係合突起３２との接触面間に生じる摩擦力による起倒杆１４の傾倒規制状態は、起動レバー９を閉じ回動操作するとこの回動操作で解除されるように設定される。
【００２０】
上記実施例では起倒杆１４の自由上端部１４ａに係合突起３２を設けるが、それとは反対に、係合突起３２は起動レバー９の一側壁部９ｂ又は９ｃの内面、もしくは両側壁部９ｂ，９ｃの各内面に設けることもできる。
【００２１】
上記構成の消火器の安全装置において、封じ具２２は安全栓１７の張出部２０と起動レバー９の上壁部９ａとにわたって貫通し、かつ抜止め状に差し込み装着されているので、従来の封じ紙のごとく輸送途上の振動等で不用意に弱体部２３がちぎれて封じ機能を失うようなことはなくて封じ機能を確実に維持できる。
【００２２】
図２に示すように、安全栓１７を引き抜くと、安全栓１７の張出部２０により封じ具２２に引き上げ力が加えられ、弱体部２３に引き上げ応力が集中することで引きちぎられるが、起倒杆１４は摩擦係合手段３１により倒れることはない。したがって、誤ってあるいは悪戯等により安全栓１７が抜かれたまま放置されても起動レバー９は不用意に作動することはなく、また安全栓１７が一旦抜かれても起倒杆１７は倒れていないので、再度安全栓１７が差し戻されると、安全栓１７は元通り起倒杆１４の栓受け溝１５に差し込み係合することが可能になるため、その後にユーザーにより消火器を移動させる等の取扱過程や消火器が不慮に転倒する等によっても消火薬剤が不用意に放出するという事故を防止できる。
【００２３】
本発明の対象とする消火器は、加圧用ガス容器４の作動により生じる圧力により消火薬剤を放射するという上記加圧式消火器に限られず、本体容器１に消火薬剤と共に充填する圧縮空気あるいは窒素ガス等の圧力により消火薬剤を放射する蓄圧式消火器の安全装置にも同様に適用できる。
【００２４】
【発明の効果】
本発明によれば、安全栓の張出部と起動レバーとにわたって貫通しかつ抜止め状に差し込まれた封じ具により従来の封じ紙のごとく輸送途上等で不用意に封じ機能を失うことがないようにしてあるので、安全栓の封じ機能を確保でき、また起倒杆の自由上端部と起動レバーの一側壁部もしくは両側壁部との対向面間に設けた摩擦係合手段により安全栓を抜いただけでは起倒杆が倒れることのないようにしてあるので、不慮の消火薬剤放出事故を防止でき、延いてはユーザーとメーカー間でのトラブル発生を減少できるという利点がある。
【図面の簡単な説明】
【図１】本発明の一実施例を示す消火器の安全装置の縦断面図である。
【図２】安全栓を抜いた直後の状態を図１に対応して示す縦断面図である。
【図３】図１におけるＡ矢視図である。
【図４】（ａ）は封じ具の平面図、（ｂ）は封じ具のＢ−Ｂ線断面図、（ｃ）は封じ具の底面図である。
【図５】（ａ）は他例の封じ具の平面図、（ｂ）は他例の封じ具のＣ−Ｃ線断面図、（ｃ）は他例の封じ具の底面図である。
【図６】従来例の消火器の安全装置の縦断面図である。
【図７】従来例の消火器の安全装置の側面図である。
【図８】図７の消火器の安全装置を安全栓を抜いた直後の状態で示す側面図である。
【符号の説明】
１本体容器
７固定レバー
８起動レバーの枢軸
９起動レバー
９ａ起動レバーの上壁部
９ｂ，９ｃ起動レバーの両側壁部
１０溝
１４起倒杆
１６起倒杆の枢軸
１７安全栓
２０張出部
２１開口
２２封じ具
２３弱体部
２４張出部の貫通孔
２５起動レバーの貫通孔
２６軸部
２７頭部
２８抜止め膨大部
３１摩擦係合手段
３２係合突起[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a safety device for a fire extinguisher of the pressurized or accumulating type, and more particularly to improvement of a structure around a safety plug.
[0002]
[Prior art]
For example, as shown in FIG. 6 and FIG. 7, a safety plug (safety pin) 17 is attached to a starting lever 9 attached to the upper head portion of this type of fire extinguisher in order to prevent unintended operation. I have. The safety plug 17 is attached to an opening 21 provided in the activation lever 9 so as to be able to be inserted and removed from above, while the activation lever 9 is locked between the activation lever 9 and the fixed lever 7 by pushing the activation lever 9 in an open state. When the safety plug 17 is inserted into the activation lever 9 and engages with the raising and lowering rod 14, the raising and lowering rod 14 is prevented from tilting, and is maintained in an upright posture in which the locking state of the activation lever 9 is maintained. (For example, see Patent Document 1). Then, as shown in FIG. 7, a sealing paper 40 for confirming withdrawal of the safety plug is attached to the activation lever 9 across the safety plug 17.
Thus, as shown in FIG. 8, when the safety plug 17 is pulled out, the perforated portion of the sealing paper 40 is broken, and at the same time, the raising / lowering rod 14 falls down, allowing the closing and rotating operation of the activation lever 9. The extinguishing agent can be released by a moving operation.
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. Sho 62-43571
[Problems to be solved by the invention]
However, in the above-described fire extinguisher in which the sealing paper 40 is attached to the activation lever 9 across the safety plug 17, the sealing paper 40 may be subjected to vibration during transportation of the fire extinguisher or may come into contact with other objects during installation. Even though the operation of pulling out the safety plug 17 is not performed, the perforated portion of the sealing paper 40 may be broken and lose the sealing function.
Further, in the above-described fire extinguisher, in which the raising / lowering rod 14 falls down when the safety plug 17 is pulled out, once the safety plug 17 is pulled out, the raising / lowering rod 14 falls down. It is necessary to wake up and insert the safety plug 17 from the opening 21 of the activation lever 9 to engage with the raising / lowering rod 14. However, when a person who is not familiar with such an operation, a mischief actor, or the like pulls out the safety plug 17, the state in which the safety plug 17 is inserted into the opening 21 of the activation lever 9 with the raising and lowering rods 14 lying down is normal. I misunderstood that it was a good set and left it in that state. Under such a leaving state, the fire extinguisher accidentally falls down so as to close the activation lever 9 or the user does not notice that the safety plug 17 is in an incompletely set state, and the activation / fixation lever 9. When the fire extinguisher is moved while holding the fire extinguisher 7, an unexpected accident may occur when the fire extinguishing agent is released.
Such a situation has caused trouble between the user and the manufacturer.
[0005]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a safety plug that does not inadvertently lose the sealing function during transportation or the like as in the case of conventional sealing paper. To prevent accidental release of fire-extinguishing chemicals by taking safety measures to prevent the erecting rod from falling if only the safety plug is removed. An object of the present invention is to provide a fire extinguisher safety device capable of reducing the occurrence.
[0006]
[Means for Solving the Problems]
The safety device for a fire extinguisher presupposed by the present invention includes a main body container (1) filled with a fire extinguishing agent, a fixed lever (7) fixed to an upper head portion of the main body container, and a pivot ( 8) an activation lever (9) pivotally attached to the opening and closing pivot, and a pivotally pivotable pivot about the pivot (16) in an upright posture and an inclined posture with respect to the fixed lever; The free upper end (14a) is brought into abutting contact with the lower surface of the upper wall (9a) inside the groove (10) provided along the longitudinal direction on the lower surface side of the activation lever (9), so that the activation lever is (9) is locked in an open state, and the free upper end (14a) is separated from the lower surface of the upper wall portion (9a) in a tilted posture to allow the starting lever (9) to close and rotate. ) And an opening (9) provided in the upper wall (9a) of the activation lever (9). (1) a safety plug (17) which is removably inserted from above, and which is inserted into the elevating rod (14) in the upright posture to prevent the inverting rod (14) from tilting; It is provided with.
[0007]
In addition, the invention according to claim 1 is characterized in that the sealing member (22) of the safety plug (17) overlaps with the upper wall (9a) of the activation lever (9) on the upper wall. It penetrates over the overhang portion (20) of (17), and is inserted and mounted in a retaining shape. By pulling out the safety plug (17) into this sealing device (22), it is torn off so that it cannot be reused. It is characterized in that the weakened portion (23) is provided.
In this case, the sealing device (22) is provided on the overhanging portion (20) of the safety plug (17) and the upper wall portion (9a) of the activation lever (9). A shaft portion (26) that can be inserted into the through holes (24) and (25) provided so as to coincide with each other, and a through hole of the overhang portion (20) provided in an overhanging shape at the upper end of the shaft portion. (24) a large diameter head (27) overlapping the periphery of the upper end opening, and a lower end opening of a through-hole (25) of the upper wall (9a) provided at a tip of the shaft (26). It is formed in a shape having a retaining bulge (28) which engages in a retaining shape on the periphery, and a connecting portion between the head (27) and the shaft (26) or the shaft (26). The weakened part (23) can be formed in the middle part of.
[0008]
The invention according to claim 3 is that the free upper end portion (14a) of the raising and lowering rod (14) and one side wall portion (9b or 9c) in the groove (10) of the activation lever (9) or both side wall portions. (9b) A frictional engagement means (31) is provided between the opposing surfaces of the frictional engagement means (9) for restricting the tilting rod (14) from tilting at an angle position of the upright posture. (31) is characterized in that it is configured to be released by closing and rotating the starting lever (9) by the tilting restriction state by (31).
In this case, the frictional engagement means (31) may be a free upper end (14a) of the raising / lowering rod (14) or one side wall of the activation lever (9). (9b or 9c) or both side walls (9b) and (9c), and can be constituted by an engagement projection (32) that rubs against the other.
[0009]
[Action]
According to the first and second aspects of the present invention, since the sealing device has a mounting form that penetrates the projecting portion of the safety plug and the upper wall portion of the activation lever and is inserted in a retaining shape, As in the case of the sealing paper, the weakening portion is not inadvertently torn off due to vibration or the like during transportation and the sealing function is not lost, and the sealing function can be reliably maintained.
[0010]
According to the third and fourth aspects of the present invention, the tilting rod is in the upright posture by the frictional engagement means provided between the free upper end of the tilting rod and the opposing surface of one or both side walls of the activation lever. The tilting rod is restricted from tilting at the angle position of, so that the raising / lowering rod does not fall down only by removing the safety plug. Therefore, even if the safety plug is pulled out accidentally or by mischief, the starting lever does not operate carelessly, and even if the safety plug is once pulled out, the raising / lowering rod does not fall down. Can be inserted and engaged with the raising and lowering rods as before, so that accidental release of fire extinguishing chemicals due to subsequent handling processes such as movement of the fire extinguisher by the user or accidental overturning of the fire extinguisher may occur. Can be prevented.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a fire extinguisher safety device showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view showing a state immediately after a safety plug is removed corresponding to FIG. 1, and FIG. 4A is a plan view of the sealing device, FIG. 4B is a cross-sectional view taken along line BB of the sealing device, and FIG. 4C is a bottom view of the sealing device.
[0012]
In FIG. 1, a valve 2 is attached with a valve cap 3 to an upper head portion of a main body container 1 filled with a fire extinguishing agent. A breaking needle bar 6 with a sharpened lower end 6a is mounted in the valve 2 above the pressurizing gas container 4 so as to break the sealing plate 5 of the pressurizing gas container 4 during use so as to be vertically movable. Have been. A fixed lever 7 is provided above the valve 2, and an activation lever 9 is provided above the fixed lever 7 so as to face the fixed lever 7, and has a base pivotally attached to the base of the fixed lever 7 by a pivot 8 so as to be rotatable. I have. The activation lever 9 is formed in a cross-sectional groove shape having an upper wall portion 9a and both side wall portions 9b and 9c in order to form a groove 10 on the lower surface side along the longitudinal direction. The upper end of the breaking needle bar 6 is locked to a part 9 d of the activation lever 9.
[0013]
Further, a siphon tube 11 is attached to the lower surface side of the valve 2, a fire extinguisher hose 12 is connected to one side of the valve 2, and the upper end of the siphon tube 11 and the fire extinguisher are provided in the valve 2 above the siphon tube 11. A communication passage 13 communicating with the hose 12 is formed.
[0014]
In order to prevent inadvertent operation of the activation lever 9, a raising / lowering rod 14 is provided. The raising / lowering rod 14 is a plastic molded product such as a polyacetal resin or a polyamide resin having excellent abrasion resistance. The upper part is a free upper end portion 14a, and the stopper receiving grooves 15, 15 are vertically arranged in front and rear directions. And a lower end base portion 14 b thereof is pivotally attached to the fixed lever 7 with a pivot 16. Thus, the raising and lowering rod 14 comes into contact with the free upper end portion 14a against the lower surface of the upper wall portion 9a of the activation lever 9 in a state of being stretched, and locks the activation lever 9 in the open position. The free upper end 14a is rotatable around the pivot 16 in a tilted posture in which the free upper end 14a falls on the fixed lever 7 while sliding on the lower surface of the upper wall 9 with the movement.
[0015]
The safety plug 17 for preventing the tilting rod 14 from falling down includes two linear portions 18a and 18b made of metal rods, and an annular portion 18c which is continuously bent to the upper end of the linear portions 18a and 18b. And a plastic handle 19 is integrally formed on the annular portion 18c by coating. At the lower end of the handle 19, an overhang portion 20 is formed integrally with the upper wall portion 9a of the activation lever 9 so as to abut on the upper wall portion 9a. The safety plug 17 has two linear portions 18a and 18b inserted from above the opening 21 provided in the upper wall portion 9a of the activation lever 9, and is inserted into and engaged with the plug receiving grooves 15 and 15 of the raising / lowering rod 14. This prevents the tilting rod 14 from tilting.
[0016]
According to the present invention, in the fire extinguisher having the above-described configuration, the sealing member 22 of the safety plug 17 penetrates over the projecting portion 20 of the safety plug 17 and the upper wall portion 9a of the activation lever 9, and is inserted and mounted in a retaining shape. It is characterized in that the sealing member 22 is provided with a weak portion 23 that can be unreusably torn by pulling out the safety plug 17.
[0017]
Specifically, the sealing member 22 is a plastic molded product, and as shown in FIGS. 1 and 4A to 4C, the overhang portion 20 of the safety plug 17 and the upper wall portion of the activation lever 9. A shaft portion 26 that can be inserted into through holes 24 and 25 provided so as to coincide with each other at 9 a, and is provided at the upper end of the shaft portion 26 so as to protrude larger than the diameter of the through hole 24 of the overhang portion 20. A head 27 overlapping the periphery of the upper end opening of the through hole 24, and a tip end of the shaft portion 26, which is provided so as to project slightly larger than the diameter of the through hole 25 of the upper wall 9a. Of the lower end opening of the shaft portion 26, and a weakened portion 23 which is easy to tear off is formed in a middle portion of the shaft portion 26 in a constricted shape. The retaining bulging portion 28 at the tip of the sealing tool 22 is formed to have a tapered taper 28a, and the shaft portion 26 ahead of the weak portion 23 is formed with a split groove 29 so as to be easily elastically deformed. This makes it easy to insert the retaining expansion portion 28 at the distal end of the shaft portion 26 of the sealing tool 22 into the through hole 25 of the activation lever 9 while elastically reducing the diameter thereof. The diameter is enlarged by the action so that the diameter of the through-hole 25 can be prevented from engaging around the lower end opening.
[0018]
As shown in FIGS. 5A to 5C, the weak portion 23 of the sealing device 22 is a connecting portion between the upper end portion 26a of the shaft portion 26 and the head 27, that is, the shaft portion, as shown in FIGS. The outer peripheral surface of the upper end 26a of 26 and the inner peripheral surface of the hole 27a of the head 27 may be formed to be connected by a thin connecting portion 30 that can be torn by pulling out the safety plug 17. . The configuration other than the weak portion 23 of the sealing tool 22 shown in FIG. 5 is the same as that of the sealing tool 22 of FIG.
[0019]
In addition, as shown in FIG. 3, the present invention provides a free upper end 14a of the raising / lowering rod 14 and one side wall 9b or 9c or a side wall 9b in a groove 10 provided on the lower surface side of the activation lever 9. It is characterized in that a frictional engagement means 31 is provided between the opposing surface and the lower surface 9c so as to restrict the tilting rod 14 from falling while being held upright. In the specific example shown in FIG. 3, the frictional engagement means 31 has engaging projections 32, 32 integrally projecting from both sides of the free upper end portion 14a of the raising and lowering rod 14, so that the raising and lowering rod 14 has an angle of upright posture. When in the position, the engaging projections 32, 32 strongly rub against the respective inner surfaces of the side walls 9 b, 9 c of the activation lever 9. It is constructed so that it does not fall freely on its own without depending on.
Although not shown, the engagement protrusion 32 is provided so as to protrude only on one side of the free upper end portion 14 of the raising / lowering rod 14, and the engagement protrusion 32 is strong against the inner surface of the one side wall 9 b or 9 c of the activation lever 9. It can also be configured to rub against each other.
However, the tilting restriction state of the raising and lowering rod 14 due to the frictional force generated between the contact surface between the engagement protrusion 32 and one of the side walls 9b or 9c of the activation lever 9 or the both side walls 9b and 9c is determined by the activation lever. 9 is set to be released by the turning operation when the closing operation is performed.
[0020]
In the above embodiment, the engaging protrusion 32 is provided on the free upper end portion 14a of the raising and lowering rod 14. On the contrary, the engaging protrusion 32 is formed on the inner surface of the one side wall 9b or 9c of the activation lever 9, or on both side wall portions 9b. , 9c can be provided on each inner surface.
[0021]
In the fire extinguisher safety device having the above-described configuration, the sealing member 22 penetrates over the projecting portion 20 of the safety plug 17 and the upper wall portion 9a of the activation lever 9 and is inserted and mounted in a retaining shape. As in the case of the sealing paper, the weakening portion 23 is not inadvertently torn off due to vibration during transportation or the like and the sealing function is not lost, and the sealing function can be reliably maintained.
[0022]
As shown in FIG. 2, when the safety plug 17 is pulled out, a pulling force is applied to the sealing tool 22 by the projecting portion 20 of the safety plug 17, and the pulling stress is concentrated on the weakened portion 23, whereby the safety tool 17 is torn off. The rod 14 does not fall down due to the friction engagement means 31. Therefore, even if the safety plug 17 is pulled out accidentally or by mischief, the starting lever 9 does not operate carelessly, and since the safety plug 17 is once pulled out, the raising / lowering rod 17 does not fall down. When the safety plug 17 is returned again, the safety plug 17 can be inserted and engaged with the plug receiving groove 15 of the elevating rod 14 as before, so that the user can then move the fire extinguisher, etc. Accidental release of the fire extinguishing agent due to a process or accidental fall of the fire extinguisher can be prevented.
[0023]
The fire extinguisher to which the present invention is applied is not limited to the above-described pressurized fire extinguisher that emits a fire extinguishing agent by the pressure generated by the operation of the pressurizing gas container 4. The present invention can be similarly applied to a safety device for a pressure-accumulation type fire extinguisher that emits a fire extinguishing agent under such pressure.
[0024]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the sealing function penetrated over the projecting part of the safety plug and the activation lever and is inserted in the retaining shape does not inadvertently lose the sealing function during transportation or the like like a conventional sealing paper. As a result, the function of sealing the safety plug can be ensured, and the safety plug is secured by frictional engagement means provided between the free upper end of the raising and lowering rod and one side or both side walls of the activation lever. Since the raising and lowering rods are prevented from falling down only by pulling out, there is an advantage that accidental fire extinguishing agent release accidents can be prevented and trouble occurrence between the user and the manufacturer can be reduced.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a fire extinguisher safety device according to an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing a state immediately after a safety plug is removed, corresponding to FIG.
FIG. 3 is a view taken in the direction of arrow A in FIG. 1;
4A is a plan view of the sealing device, FIG. 4B is a cross-sectional view of the sealing device taken along line BB, and FIG. 4C is a bottom view of the sealing device.
5A is a plan view of another example of the sealing device, FIG. 5B is a cross-sectional view taken along line CC of the other example of the sealing device, and FIG. 5C is a bottom view of the other example of the sealing device.
FIG. 6 is a longitudinal sectional view of a conventional fire extinguisher safety device.
FIG. 7 is a side view of a conventional fire extinguisher safety device.
FIG. 8 is a side view showing the safety device of the fire extinguisher of FIG. 7 in a state immediately after a safety plug is removed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body container 7 Fixed lever 8 Axis of starting lever 9 Activating lever 9a Upper wall portions 9b and 9c of starting lever 10 Side walls 10 of starting lever Groove 14 Inverting rod 16 Axis of inverting rod 17 Safety plug 20 Overhang 21 Opening 22 Sealing tool 23 Weak part 24 Through-hole 25 of overhanging part Through-hole 26 of starting lever Shaft 27 Head 28 Enlarged retaining part 31 Friction engagement means 32 Engagement projection

Claims

A main body container filled with a fire extinguishing agent, a fixed lever fixed to an upper head portion of the main body container, an activation lever pivotally connected to the fixed lever so as to be openable and closable about a pivot, and It is pivotally mounted around a pivot over a standing posture and a tilting posture, and in the standing posture, a free upper end portion is formed on a lower surface side of the activation lever with respect to a lower surface of an upper wall portion in a groove provided along a longitudinal direction thereof. An up-and-down lever that abuts against the tension state to lock the activation lever in an open state, separates a free upper end of the activation lever from the lower surface of the upper wall portion in a tilted posture, and allows the activation lever to close and rotate; A safety plug which is removably inserted into an opening provided in an upper wall portion of the lever from above, and which is engaged with the upright rod in the upright posture by the insertion to prevent the upright rod from tilting. Fire extinguisher safety equipment
A seal for the safety plug penetrates the upper wall portion of the activation lever and the overhang portion of the safety plug overlapping the upper wall portion, and is inserted and mounted in a retaining shape. A safety device for a fire extinguisher, characterized in that the tool is provided with a weakened portion that can be torn so that it cannot be reused by pulling out the safety plug.

The sealing device is provided with a shaft portion that can be inserted into a through hole provided so as to coincide with the projecting portion of the safety plug and the upper wall portion of the activation lever, and a projecting shape provided at the upper end of the shaft portion. A large-diameter head that overlaps around the upper end opening of the through hole of the overhanging portion, and a stopper that is provided at the tip of the shaft portion and that comes off around the lower end opening of the through hole in the upper wall. 2. The weakened portion is formed in a shape having a retaining stopper enlarged portion that engages with the head, and the weakened portion is formed at a connection portion between the head and the shaft portion or an intermediate portion of the shaft portion. Fire extinguisher safety equipment.

A main body container filled with a fire extinguishing agent, a fixed lever fixed to an upper head portion of the main body container, an activation lever pivotally connected to the fixed lever so as to be openable and closable about a pivot, and It is rotatably pivoted around a pivot over a standing posture and a tilting posture, and in the standing posture, a free upper end portion is formed on a lower surface side of the activation lever with respect to a lower surface of an upper wall portion in a groove provided along the longitudinal direction thereof. An up-and-down lever that abuts against the tension state to lock the activation lever in an open state, separates a free upper end of the activation lever from the lower surface of the upper wall portion in a tilted posture, and allows the activation lever to close and rotate; A safety plug which is removably inserted into an opening provided in an upper wall portion of the lever from above, and which engages with the upright rod in the upright posture by the insertion to prevent the upright rod from tilting. Fire extinguisher safety equipment,
A friction member for restricting the tilting rod from tilting at an angular position in a standing posture between a free upper end of the tilting rod and a facing surface of one side wall or both side walls in a groove of the activation lever. A safety device for a fire extinguisher, characterized in that a joining means is provided, and the tilting restriction state by the friction engagement means is released by closing and rotating the starting lever.

The frictional engagement means is constituted by an engagement protrusion protruding from one of a free upper end of the raising and lowering rod and one or both side walls of the activation lever and rubbing against the other. The safety device for a fire extinguisher according to claim 3, which is provided.