JP4304011B2

JP4304011B2 - Fire extinguisher safety device

Info

Publication number: JP4304011B2
Application number: JP2003161925A
Authority: JP
Inventors: 正文園田; 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: 2009-07-29
Anticipated expiration: 2023-06-06
Also published as: JP2004358043A

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、前記起動レバー（９）の上壁部（９ａ）に貫通孔（２５）が設けられており、前記安全栓（１７）が、把手（１９）と、前記把手（１９）の下端に一体に形成された張出部（２０）とを有しており、前記張出部（２０）が、前記起動レバー（９）の上壁部（９ａ）に設けられている前記貫通孔（２５）に一致するよう設けられる貫通孔（２４）を有しており、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）に設けられている前記貫通孔（２５）とこの上壁部の上に重合する前記安全栓（１７）の張出部（２０）に設けられている前記貫通孔（２４）とに挿通し、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）に設けられている前記貫通孔（２４）およびそれに一致するよう前記起動レバー（９）の上壁部（９ａ）に設けられている前記貫通孔（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】
【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】
【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]
BACKGROUND OF THE INVENTION
The present invention relates to a safety device for a pressurized or accumulating fire extinguisher, and more particularly to an improvement in the structure around a safety stopper.
[0002]
[Prior art]
For example, as shown in FIGS. 6 and 7, a safety stopper (safety pin) 17 is attached to the start lever 9 attached to the upper head portion of this type of fire extinguisher in order to prevent an emergency operation. Yes. The safety stopper 17 is attached to the opening 21 provided in the starting lever 9 so that it can be inserted and removed from above. The safety stopper 17 extends and locks the starting lever 9 between the starting lever 9 and the fixing lever 7 in an open state. 14 is inserted, and when the safety plug 17 is inserted into the activation lever 9 and engaged with the raising lever 14, the raising rod 14 is prevented from being tilted and is held in an upright posture that maintains the locked state of the activation lever 9. (For example, refer patent document 1). As shown in FIG. 7, a sealing paper 40 for confirming withdrawal of the safety stopper is pasted on the activation lever 9 across the safety stopper 17.
Thus, as shown in FIG. 8, when the safety stopper 17 is pulled out, the perforated portion of the sealing paper 40 is broken, and at the same time, the raising and lowering lever 14 is tilted to allow the starting lever 9 to be closed and rotated. The fire extinguishing agent can be released by moving operation.
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. 62-43571 [0004]
[Problems to be solved by the invention]
However, in the above-mentioned fire extinguisher having the sealing paper 40 pasted on the start lever 9 across the safety stopper 17, the sealing paper 40 is subjected to vibration during transportation of the fire extinguisher, or is in 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 cut off and the sealing function may be lost.
Further, in the above-mentioned fire extinguisher, when the safety plug 17 is pulled out, the uprising rod 14 falls down. When the safety plug 17 is pulled out once, the rising up rod 14 falls down. It is necessary to wake up and insert the safety stopper 17 from the opening 21 of the activation lever 9 to engage with the raising and lowering lever 14. However, when a person who is not familiar with these operations or a mischievous person pulls out the safety stopper 17, the state where the safety stopper 17 is inserted into the opening 21 of the activation lever 9 while the raising and lowering lever 14 is in a normal state is normal. I misunderstood that it was a set state and left it in that state. Under such a neglected state, the fire extinguisher accidentally falls to close the start lever 9, or the user is not aware that the safety stopper 17 is in an incomplete set state. When the fire extinguisher was moved by holding 7, there was a case where an unexpected accident occurred in which the fire extinguishing agent was released.
For these reasons, troubles have occurred between users and manufacturers.
[0005]
The present invention has been made in order to solve the above-mentioned problems, and the object of the present invention is to provide a safety plug without losing the sealing function inadvertently during transportation like a conventional sealing paper. In addition, it is possible to prevent accidental fire extinguishing agent release accidents by taking safety measures that will not cause a fall and fall by simply unplugging the safety plug. An object of the present invention is to provide a fire extinguisher safety device capable of reducing generation.
[0006]
[Means for Solving the Problems]
The fire extinguisher safety device as a premise of the present invention includes a main body container (1) filled with a fire extinguishing agent, a fixing lever (7) fixed to the upper head portion of the main body container, and a pivot ( 8) A start lever (9) pivotably mounted around the pivot lever, and a pivot lever (9) pivoted around the pivot (16) in an upright position and a tilted position with respect to the fixed lever. A free upper end (14a) is brought into contact with the lower surface of the upper wall (9a) in the groove (10) provided along the longitudinal direction on the lower surface side of the activation lever (9) so as to be stretched. (9) is locked in the open state, and in a tilted posture, the free upper end portion (14a) is separated from the lower surface of the upper wall portion (9a) to allow the activation lever (9) to close and rotate (14) ) And an opening (9a) provided in the upper wall (9a) of the start lever (9) 1) a safety stopper (17) that is inserted in the above-described manner in such a manner that it can be inserted and removed, and that engages with the uprising rod (14) in the upright position to prevent the tilting rod (14) from tilting. It is equipped with.
[0007]
In addition, the invention according to claim 1 is characterized in that a through hole (25) is provided in the upper wall portion (9a) of the activation lever (9), and the safety plug (17) includes the handle (19), A protrusion (20) integrally formed at the lower end of the handle (19), and the protrusion (20) is provided on the upper wall (9a) of the activation lever (9). A through hole (24) provided so as to coincide with the through hole (25), and the sealing member (22) of the safety plug (17) is connected to the upper wall portion ( 9a) is inserted into the through hole (25) provided in the overhanging portion (20) of the safety stopper (17) superposed on the upper wall portion and the through hole (24). In addition, the safety plug (17) is pulled out of the sealing tool (22) and removed again. Use incapable Hikichigireru weakened portion (23) and has a characteristic that is provided.
In this case, the sealing tool (22) corresponds to the through hole (24) provided in the overhang portion (20) of the safety plug (17) and the same as the invention (2). A shaft portion (26) that can be inserted into the through hole (25) provided in the upper wall portion (9a) of the start lever (9), and an overhang provided on the upper end of the shaft portion. A large-diameter head (27) overlapping the periphery of the upper end opening of the through hole (24) of the overhang portion (20), and a tip of the shaft portion (26) provided on the tip of the upper wall portion (9a). It forms in the form which has the retaining bulge part (28) engaged on the lower end opening part periphery of a through-hole (25) like a retaining shape, and connects the said head part (27) and a shaft part (26). The weak body part (23) can be formed in the intermediate part of the part or the shaft part (26).
[0008]
[0009]
[Action]
According to the first and second aspects of the invention, the sealing tool penetrates over the overhanging portion of the safety stopper and the upper wall portion of the activation lever, and adopts a mounting form that is inserted in a retaining shape. The sealing function can be reliably maintained without losing the sealing function due to inadvertent tearing of the weak body due to vibration during transportation as in the case of the sealing paper.
[0010]
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of the present invention will be described below with reference to 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 corresponding to FIG. 1 immediately after the safety stopper is removed, and FIG. 4A is a plan view of the sealing tool, FIG. 4B is a cross-sectional view taken along line BB of the sealing tool, and FIG. 4C is a bottom view of the sealing tool.
[0012]
In FIG. 1, a valve 2 is attached to an upper head portion of a main body container 1 filled with a fire extinguishing agent with a valve cap 3, and a pressurizing gas container 4 as a pressure source for radiating the fire extinguishing agent is provided on the lower surface side of the valve 2. A breaking needle bar 6 having a sharpened lower end 6a is incorporated in the valve 2 above the pressurizing gas container 4 so as to be able to move up and down in order to break the sealing plate 5 of the pressurizing gas container 4 during use. It is. At the upper part of the valve 2, there is provided a fixed lever 7 and an activation lever 9 which is disposed to face the fixed lever 7 and is pivotally attached to the base of the fixed lever 7 by a pivot 8. Yes. 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 so as to form the groove 10 along the longitudinal direction on the lower surface side thereof. The upper end of the breaking needle bar 6 is locked to a part 9 d of the activation lever 9.
[0013]
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 placed in the valve 2 above the siphon tube 11. A communication path 13 that communicates 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 polyacetal resin or polyamide resin having excellent wear resistance, and the upper portion thereof is a free upper end portion 14a. The lower end base portion 14 b is pivotally attached to the fixed lever 7 with a pivot 16. Thus, the raising / lowering rod 14 has a standing posture in which the free upper end portion 14a is brought into contact with the lower surface of the upper wall portion 9a of the activation lever 9 to lock the activation lever 9 in the open posture, and the activation lever 9 is closed. The free upper end portion 14a is rotatable about the pivot 16 over a tilting posture in which the free upper end portion 14a slides on the lower surface of the upper wall portion 9 and falls on the fixed lever 7 as it moves.
[0015]
The safety stopper 17 for preventing the fall of the raising / lowering rod 14 includes two straight portions 18a and 18b made of metal rods, and an annular portion 18c bent in an annular shape continuously at the upper ends of the straight portions 18a and 18b. And a plastic handle 19 is integrally coated on the annular portion 18c. At the lower end of the handle 19, an overhanging portion 20 is formed integrally with the upper wall portion 9 a of the activation lever 9. The safety plug 17 has two straight portions 18 a and 18 b inserted from above the opening 21 provided in the upper wall portion 9 a of the activation lever 9 and is inserted into and engaged with the plug receiving grooves 15 and 15 of the raising and lowering rod 14. Thus, the tilting cage 14 is prevented from tilting.
[0016]
In the fire extinguisher having the above-described configuration, the sealing tool 22 of the safety stopper 17 penetrates the overhanging portion 20 of the safety stopper 17 and the upper wall portion 9a of the activation lever 9, and is inserted and attached in a retaining shape. The sealing tool 22 is characterized in that a weak body portion 23 is provided that can be torn off so as not to be reused by pulling out the safety stopper 17.
[0017]
Specifically, the sealing tool 22 is a plastic molded product, and as shown in FIGS. 1 and 4A to 4C, the overhanging portion 20 of the safety stopper 17 and the upper wall portion of the activation lever 9 are used. A shaft portion 26 that can be inserted into through holes 24 and 25 provided so as to coincide with each other 9a, and an 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. The head 27 that overlaps the periphery of the upper end opening of the through hole 24 and the tip of the shaft 26 are provided so as to protrude slightly larger than the diameter of the through hole 25 of the upper wall portion 9a. And a weakened portion 23 that is easily torn off in the middle portion of the shaft portion 26 is formed in a constricted shape. The enlarging preventing portion 28 at the tip of the sealing tool 22 is formed with a tapered taper 28a, and the shaft portion 26 on the front side of the weak body portion 23 is formed with a split groove 29 so as to be easily elastically deformed. As a result, the enormous retaining portion 28 at the tip of the shaft portion 26 of the sealing tool 22 can be easily inserted into the through hole 25 of the activation lever 9 while being reduced in diameter by elasticity, and the retaining enlarging portion 28 is elastically restored after insertion. The diameter is increased by the action so that it can be engaged with the periphery of the lower end opening of the through hole 25 in a retaining manner.
[0018]
As shown in FIGS. 5A to 5C, the weak body portion 23 of the sealing tool 22 is connected to the upper end portion 26a of the shaft portion 26 and the head portion 27, that is, the shaft portion, as shown in FIGS. The peripheral surface of the upper end portion 26 a of the head 26 and the inner peripheral surface of the hole 27 a of the head portion 27 may be formed in a shape connected by a thin connecting portion 30 that can be torn off by pulling out the safety stopper 17. . 5 other than the weak body portion 23 of the sealing tool 22 shown in FIG. 5 is configured similarly to the case of the sealing tool 22 of FIG.
[0019]
In addition, as shown in FIG. 3, the present invention includes a free upper end portion 14 a of the raising / lowering rod 14 and one side wall portion 9 b or 9 c in the groove 10 provided on the lower surface side of the activation lever 9, or both side wall portions 9 b, Friction engagement means 31 is provided between the surfaces facing 9c to restrict the rising and falling rod 14 from being held in a standing state and falling down. In the specific example shown in FIG. 3, the friction engagement means 31 has engaging projections 32 and 32 integrally projecting on both sides of the free upper end portion 14 a of the raising and lowering rod 14, and the angle of the raising and lowering rod 14 in the standing posture. When in position, the engaging protrusions 32, 32 rub against each inner surface of the side wall portions 9b, 9c of the start lever 9, and the raising / lowering rod 14 is caused by the frictional force generated by the rubbing so that the safety plug 17 It is configured not to fall down on its own without depending on
Although not shown in the drawings, the engaging protrusion 32 protrudes from only one side of the free upper end 14 of the raising / lowering rod 14, and the engaging protrusion 32 is strongly against the inner surface of one side wall portion 9 b or 9 c of the activation lever 9. It can also be configured to rub.
However, the tilting restriction state of the raising lever 14 by the frictional force generated between the contact surface of the engagement protrusion 32 and the one side wall portion 9b or 9c of the activation lever 9 or the inner surfaces of the side wall portions 9b and 9c is the activation lever. When 9 is turned and closed, it is set to be released by this turning operation.
[0020]
In the above embodiment, the engagement protrusion 32 is provided on the free upper end portion 14a of the raising / lowering rod 14, but on the contrary, the engagement protrusion 32 is formed on the inner surface of one side wall portion 9b or 9c of the activation lever 9 or on both side wall portions 9b. 9c can also be provided on each inner surface.
[0021]
In the safety device for a fire extinguisher having the above-described configuration, the sealing tool 22 penetrates over the overhanging portion 20 of the safety stopper 17 and the upper wall portion 9a of the activation lever 9, and is inserted and attached in a retaining manner. The sealing function can be reliably maintained without causing the weak body part 23 to be carelessly torn off due to vibration during transportation or the like like a sealing paper.
[0022]
As shown in FIG. 2, when the safety stopper 17 is pulled out, a lifting force is applied to the sealing member 22 by the overhanging portion 20 of the safety stopper 17, and the lifting stress is concentrated on the weak body portion 23. The scissors 14 are not tilted by the friction engagement means 31. Therefore, even if the safety stopper 17 is left unintentionally or accidentally left unattended, the activation lever 9 does not operate inadvertently, and even if the safety stopper 17 is removed once, the raising / lowering rod 17 does not fall down. When the safety stopper 17 is inserted again, the safety stopper 17 can be inserted into and engaged with the stopper receiving groove 15 of the raising and lowering cage 14, so that the user can move the fire extinguisher thereafter. It is possible to prevent an accident that the fire extinguishing agent is inadvertently released even if the process or the fire extinguisher falls accidentally.
[0023]
The fire extinguisher that is the subject of the present invention is not limited to the above-mentioned pressurizing fire extinguisher that radiates the fire extinguishing agent by the pressure generated by the operation of the pressurizing gas container 4, but the compressed air or nitrogen gas filled in the main body container 1 with the fire extinguishing agent The present invention can be similarly applied to a safety device for a pressure-accumulating fire extinguisher that radiates a fire extinguishing agent by a pressure such as.
[0024]
【The invention's effect】
According to the present invention, the sealing function does not inadvertently lose the sealing function during transportation or the like, as in the case of conventional sealing paper, by the sealing tool that penetrates through the overhanging portion of the safety stopper and the activation lever and is inserted in a retaining shape. Therefore, the sealing function of the safety stopper can be secured, and the safety stopper can be secured by the friction engagement means provided between the free upper end of the raising / lowering lever and the one or both side walls of the activation lever. By simply pulling it 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 because the rise and fall is prevented from falling.
[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 corresponding to FIG. 1 showing a state immediately after the safety plug is removed.
FIG. 3 is a view taken along arrow A in FIG. 1;
4A is a plan view of the sealing tool, FIG. 4B is a cross-sectional view taken along line B-B of the sealing tool, and FIG. 4C is a bottom view of the sealing tool.
5A is a plan view of another example of the sealing tool, FIG. 5B is a cross-sectional view taken along line CC of the sealing tool of the other example, and FIG. 5C is a bottom view of the sealing tool of the other example.
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.
8 is a side view showing the fire extinguisher safety device of FIG. 7 in a state immediately after the safety plug is removed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body container 7 Fixing lever 8 Starting lever pivot 9 Starting lever 9a Starting lever upper wall part 9b, 9c Starting lever both-side wall part 10 Groove 14 Lifting rod 16 Lifting rod pivot 17 Safety plug 20 Overhang part 21 Opening 22 Sealing tool 23 Weak body portion 24 Through hole 25 of overhanging portion Through hole 26 of starting lever Shaft portion 27 Head portion 28 Enlarged retaining portion 31 Friction engaging means 32 Engaging protrusion

Claims

A main body container filled with a fire extinguishing agent, a fixed lever fixed to the upper head portion of the main body container, an activation lever pivotally attached to the fixed lever so as to be pivotable around a pivot axis, and the fixed lever It is pivotally mounted around a pivot axis in a standing posture and a tilting posture, and in the standing posture, a free upper end portion is provided on the lower surface side of the starting lever along the longitudinal direction with respect to the lower surface of the upper wall portion in the groove. A tilting lever that locks the activation lever in an open state by abutting in a tensioned state, and in a tilted posture, the free upper end portion is separated from the lower surface of the upper wall portion to allow the activation lever to be closed and rotated, and the activation A safety stopper that is inserted into an opening provided in the upper wall portion of the lever so as to be able to be inserted and removed from above, and that engages with the rising and falling lever in the standing posture by the insertion to prevent the rising and falling lever from tilting. In the safety equipment of fire extinguishers
A through hole is provided in the upper wall of the activation lever;
The safety stopper is
A handle,
An overhang formed integrally with the lower end of the handle;
The projecting portion has a through hole provided to match the through hole provided in the upper wall portion of the activation lever;
The safety plug sealer includes the through-hole provided in the upper wall portion of the activation lever and the through-hole provided in the overhang portion of the safety plug that overlaps on the upper wall portion. A safety device for a fire extinguisher, characterized in that it is inserted and attached in a non-removable manner, and a weakened portion that can be torn off so that it cannot be reused by pulling out the safety stopper is provided on the seal. .

The sealing tool includes the through-hole provided in the overhanging portion of the safety plug, and a shaft portion that can be inserted into the through-hole provided in the upper wall portion of the activation lever so as to match the through-hole. A large-diameter head that is provided in an overhang shape at the upper end of the portion and overlaps with the periphery of the upper end opening of the through-hole of the overhang portion, and a through-hole in the upper wall portion that is provided at the tip of the shaft portion Formed into a shape having a retaining enormous portion engaging in a retaining manner on the periphery of the lower end opening, and forming the weak body portion at the connecting portion of the head portion and the shaft portion, or at the intermediate portion of the shaft portion The fire extinguisher safety device according to claim 1 .