JP3963402B2

JP3963402B2 - Tool for crimping overlapped metal plate

Info

Publication number: JP3963402B2
Application number: JP20662795A
Authority: JP
Inventors: 村純一木
Original assignee: 有限会社東北エスパル
Priority date: 1995-07-19
Filing date: 1995-07-19
Publication date: 2007-08-22
Anticipated expiration: 2015-07-19
Also published as: JPH0929648A

Description

【０００１】
【発明の目的】
この発明は、主として板金加工用工具の一つであって、金属板の折返し重なり部を圧着する工具、通称「ツカミ」と称されている工具の改良された構造に係わるものであり、金属板の材厚や折返し回数等に左右されて偏平化のために必要となる圧着力に過不足を生じた場合、簡単な操作により支点の位置を円滑且つ多段階に変更することで、最適な圧着力を選択可能として作業効率を高めることができるようにする新規な構造の金属板折返し重なり部圧着用工具を提供しようとするものである。
【０００２】
【従来の技術】
板金加工、特に金属板の折返し重なり部を圧着するために使用される工具は、一般的に、その全体構造を分解斜視図で示す図９、同側面図で示す図１０および同平面図で示す図１１のような構造を成す、所謂「ツカミ」と通称されている圧着用工具である。
即ち、この圧着用工具１は、第１工具本体２と第２工具本体３とを備えており、双方が交叉状に組み合わされ、その交叉部を軸支した支軸材４を回動中心として回動自在に枢着されたハサミ状構造、つまり柄側を手で握ったり緩めたりする操作で、支軸材４より先に形成されている作用部、例えば刃部で物を切ることができる構造を実現するようにしたものであり、第１工具本体２は、その枢着部７の先端側直近に上反り状上顎部５が形成され、同枢着部７から後端側には比較的長い下方柄部６を備え、枢着部７には上反り状上顎部５の回動方向に垂直な軸心をもつ通孔８が穿設され、それに組み合わされる第２工具本体３も、第１工具本体と略同様の構造を有し、枢着部７の先端側直近に、前記した第１工具本体２の上反り状上顎部５の裏面に添接できる表面形状とした上反り状下顎部９が形成され、同枢着部１１から後端側には比較的長い上方柄部１０を備え、枢着部１１には上反り状上顎部５の回動方向に垂直な軸心をもつ通孔１２が穿設された構造のものに、夫々形成されている。
【０００３】
これら第１工具本体２と第２工具本体３とは、夫々の通孔８，１２を軸芯が一致するようにして、各枢着部７，１１を当接状とした上、支軸材である鋲４を一方の通孔８の外側から挿通し、他方の通孔１２から突出した鋲４に座金１３を嵌めてから、その先端部をかしめて潰し、他端の頭部を形成して外れ止めとすることにより完成されるものであって、挟み持ち操作の操作性を向上させる必要のある場合には、使用者が自らあるいは製造元に依頼をする等して、上下柄部６，１０の開き量や角度が最適なものとなるよう塑性変形等による調整をして作業に用いられている。
【０００４】
この従来からの圧着用工具１を使用して金属板Ｐの折返し重なり部を圧着する板金加工をする場合、加工する対象が、例えば薄鉄板Ｐ２〜３枚程度の一重折返し重なり部であったり、または１枚の鉄板Ｐの２〜３回の折返し重なり部Ｐ１等であれば、これまでの圧着用工具で難無く圧着作業を完遂することができた。しかし、比較的厚手の鉄板Ｐの折返し重なり部Ｐ１であったり、厚手ではないものの４〜５枚以上の鉄板Ｐの一重折返し重なり部等の圧着作業のように、全体として剛性が高い折返し重なり部の圧着作業の場合には、通常作業用に形成された圧着用工具では、圧着作業が極めて困難になり、実質作業が実施できなくなったり、あるいは相当の力を込めて時間を掛け、何回も繰り返し作業しなければならなくなり、作業効率を大巾に低下させるだけではなく、仕上り具合をかなり悪くしてしまうという難点を抱えていた。
したがって、このような板金加工をする場合には、板厚や材質等、作業の対象に応じて複数本の構造の違う圧着用工具１を準備し、必要に応じて使い分けることが必要となることから、工具に対して多くの費用を要するばかりか、メンテナンスについても無用な負担が掛かっていた。
【０００５】
一般に、板金加工用工具に限らず、支軸材４の位置を変更させて工具の取り扱い性を改良するようにした工具としては、例えば、スリップジョイント・プライヤーやタンアンドグルーブ・プライヤー等で既に採用済みとなっいる構造であって、これら工具でその支軸材取付け位置を変更することの技術的新規性は認められないが、それら既に公知あるいは周知となっているスリップジョイントを採用した工具の場合、結果的に多少なりとも作用部、例えば挾む、掴む、切る等の作用を果たす部分に伝えられる力に変化をもたらすものもない訳ではないが、その殆どは、被作用部、即ち挾まれる側、掴まれる側、切られる側のサイズに合致させる上で都合がよくなる調整、即ち、作用部の開き加減を調整する（その結果、調整後の状態の工具では、作用部相互が直接当接しなくなり、調整前に対応可能であった作用を果たせなくしてしまう）ことを目的とするものばかりであって、作用部に加わる力を調整するために支軸材取付け位置を自在に変更可能とする技術的思想を採用しているものは見受けられず、特にこの発明の技術分野である圧着用工具については、未だ前記した構造のままの工具が採用されているに過ぎない状態である。
【０００６】
この出願の発明者は、従来までの圧着用工具１の前述のような欠点、ならびに一般工具の情況に鑑み、作用部の果たす作用対象範囲に支障を来すことなく、作用部圧着力の強さを段階的または無段階的に変更できる圧着用工具１の改良、開発に着手し、様々な試行錯誤を繰り返しながら、支点となる支軸材４の位置を自在に変更できるようにして、その圧着力を必要に応じて変化させることができるような構造の圧着用工具の開発研究を継続してきた結果、支軸材４が、加工作業によって発生する大きな剪断力によっても変形や脱落を起こさず、確実に第１工具本体２と第２工具本体３との支軸構造を維持すると共に、支点位置の変更も極めて簡単な操作によって実現可能となる上、支点位置が決定した後も、特殊な工具等を使わなくとも、確実な位置固定が可能となる仮固定構造を備えた新規な構造からなる圧着用工具の実現かに成功したものであり、以下では、その構成の詳細を、図面に示すこの発明を代表する幾つかの実施例の説明を併用にしながら、順次説示していくことにする。
【０００７】
【発明の構成】
図中に示すこの発明を代表する実施例からも明確に理解されるように、この発明の圧着用工具は、基本的に次のような構成から成り立っている。
即ち、支軸材を挿通可能であって、相互間に支軸材をスライド移動自在とする連通部で連通した複数の通孔が形成されてなる枢着部の、先端側直近には幅広の上反り上顎部が形成され、同枢着部から後端側が比較的長い下方柄部に形成されてなる第１工具本体と、該第１工具本体の通孔に対応した配置で支軸材を挿通可能とすると共に、相互間に支軸材をスライド移動自在とする連通部で連通した複数の通孔が形成されてなる枢着部の、先端側直近には、上記第１工具本体の上反り状上顎部の裏面に添接可能とする表面形状とした幅広の上反り状下顎部が形成され、同枢着部から後端側が比較的長い上方柄部に形成されてなる第２工具本体とからなり、第１工具本体と第２工具本体とが夫々の枢着部を当接状とし、且つ第１工具本体上反り上顎部裏面に第２工具本体上反り状下顎部表面を添接可能とする状態が含まれる交叉構造に組み合わされた上、第１工具本体および第２工具本体各枢着部の複数の通孔の中の相対応する選択された通孔双方に対し、支軸材がその枢着位置を変更自在に挿通されて第１工具本体と第２工具本体とをハサミ状構造のものとした上、各通孔間の連通部隙間ギャップが、各通孔の刳り抜き径より小さく形成されたものとなし、当該支軸材は、その少なくも両工具本体の通孔に掛かる部分の断面を、通孔内径に略相当する巾広断面部分と、該巾広断面部分に略直交した側の、連通部隙間ギャップに略相当する細身断面部分とからなるものに形成され、同支軸材を選択した何れかの通孔内に位置させてその巾広断面部分を連通部に直交状姿勢としたときに、同支軸材基端部の抜け止め用頭部に枢着してある鈎環を、第１工具本体または第２工具本体の何れかで当該支軸材基端部側に位置するものの枢着部に取着された係合体の、該枢着部側面よりも外側に突出させた規制片に係合して同支軸材の回動を阻止する仮固定手段を設けてなるものとした構成を要しとする金属板折返し重なり部圧着用工具である。
【０００８】
更に、この発明には、支軸材を挿通可能であって、相互間に支軸材をスライド移動自在とする連通部で連通した複数の通孔が形成されてなる枢着部の、先端側直近には幅広の上反り状上顎部が形成され、同枢着部から後端側が比較的長い下方柄部に形成されてなる第１工具本体と、該第１工具本体の通孔に対応した配置で支軸材を挿通可能とすると共に、相互間に支軸材をスライド移動自在とする連通部で連通した複数の通孔が形成されてなる枢着部の、先端側直近には、上記第１工具本体の上反り状上顎部の裏面に添接可能とする表面形状とした幅広の上反り状下顎部が形成され、同枢着部から後端側が比較的長い上方柄部に形成されてなる第２工具本体とからなり、第１工具本体と第２工具本体とが夫々の枢着部を当接状とし、且つ第１工具本体上反り状上顎部裏面に第２工具本体上反り状下顎部表面を添接可能とする状態が含まれる交叉構造に組み合わされた上、第１工具本体および第２工具本体各枢着部の複数の通孔の中の相対応する選択された通孔双方に対し、支軸材がその枢着位置を変更自在に挿通されて第１工具本体と第２工具本体とをハサミ状構造のものとした上、各通孔間の連通部の隙間ギャップが、各通孔の刳り抜き径よりも小さく形成され、第１工具本体および第２工具本体の何れか一方あるいは双方の枢着部当接面側が、全ての通孔を含む長円形か、通孔毎に個々の通孔を含む円形に浅く掘り込まれて段付き通孔に形成されたものとなす一方、支軸材が、頭部に繋がる遊嵌部と該遊嵌部から直線状に延びるネジ切り部とからなる挿通部材、および挿通部材のネジ切り部に螺合するナットで構成されるものとし、前記挿通部材遊嵌部は、第１工具本体または第２工具本体何れかの通孔に遊嵌状となるだけの長さを有し、その部分の断面が、通孔内径に略相当する巾広断面部分と、該巾広断面部分に略直交した側となる連通部隙間ギャップに略相当する細身断面部分とからなるものに形成されると共に、該遊嵌部に連なる連通部隙間ギャップに略相当する直径のネジ切り部との境には、遊嵌部断面における細身断面部分の断面巾以下であって、なお且つ、前記段付き通孔の長円形あるいは円形の掘り込み部内に納まる長さおよび厚さの規制突子部が、同巾広断面部分から両外側方向に突出形成されたものとし、該規制突子部とナットのネジ切り部への螺合、締め付けとにより、当該支軸材が、先の遊嵌部に遊嵌されていない側の第１工具本体または第２工具本体何れかとの間で仮固定される仮固定手段を設けてなるものとした構成からなる金属板折返し重なり部圧着用工具が含まれる
【０００９】
各工具本体に形成される複数の通孔は、第１工具本体と第２工具本体との枢着部に相対応する配置構造に形成され、それら対応する通孔相互に支軸材が選択的に挿入、貫通され、該支軸材を支点として第１工具本体と第２工具本体とが交叉状に組み合わされた状態で開閉動できるようにする機能を果たすものであり、個々の通孔が適宜間隔置きに独立したものとして形成されるか、それらが横方向に連通部を介して繋がっていたり、あるいは長孔（通孔が連続して連なった構造の孔）として形成された構造のものも包含しており、何れも支軸材の軸ズレを無くす上で不利にならない大きさ、形状、あるいは周面仕上げのなされたものとして形成される。
【００１０】
顎部は、圧着用工具として不可欠な巾広（正確には、横方向に巾広）の上反り形状に形成された構造部分で、第１、第２各工具本体とも、枢着部の先端側直近に形成され、第１工具本体の顎部は、上反り状上顎部となり、その裏面に第２工具本体の上反り状下顎部の表面が、仮令支軸材の位置が選択、変更されたとしても、必ず略添接状となる状態が実現されるように規制されたものとして組み合わされるよう、枢着部からの形成方向ならびに各顎部の添接状となる面の形状が規制されていなければならない。
柄部は、第１、第２各工具本体とも、枢着部から後端側に比較的長い細棒状であって、第１工具本体のそれは下方柄部となり、第２工具本体のそれは上方柄部となり、各顎部が上記した配置に組み合わされるよう、第１、第２各工具本体は、夫々の枢着部で交叉状に密着させて組み合わされる。
【００１１】
支軸材は、上述の如く規制された組み合わせ構造とされた第１工具本体および第２工具本体の、各枢着部に形成された実質２つ以上（即ち、長孔に形成されたものも含む）の通孔であって、同心状に相対応する選択された位置の通孔相互を貫通状に挿入され、同支軸材の軸心を回動中心として第１工具本体および第２工具本体が夫々の枢着部を交叉状としたままの回動自在構造、即ちハサミ状構造を実現する機能を果たすものである。
【００１２】
したがって、この支軸材としては、これまでに採用されてきているボルト・ナットあるいは蝶ナットとの組み合わせによるもの、鋲により先端をかしめたり、割りピン止めやワッシャー止め等とするもの等、上記した機能を果たし得るもの全ての応用が可能である外、例えば、ボルトまたはナットの何れか一つには第１工具本体または第２工具本体の何れか一つに設けられた規制部に係合して回動が規制されるようにし、ナットまたはボルトの何れか他方を操作する場合の回動操作が容易になる構造のものとしたり、あるいは、後述の実施例に示す類いの回り止めの構造、位置決めの構造、スライド移動を規制する構造、あるいはそれらを兼用する構造等を適宜公知の構造のものに組み合わせたり、独自に取り入れた構造、具体的には、第１工具本体または第２工具本体の何れか一方の外側部に、２つ以上穿設された通孔の穿設位置に夫々対応すると共に、通孔の軸心に平行に延出する規制片の設けられた係合体を一体化したものとし、通孔に挿入されたボルトの頭部またはナットの何れか一つに前記規制片に係脱可能に係合する鈎環の基端を枢着し、通孔に挿入したボルトの頭部またはナットの何れか他方に手指による操作を容易にする操作片を設けるようにした構造の支軸材としたり、この支軸材のボルトまたはナットの何れかに設けた操作片が操作レバー付きのもの、あるいは、操作片が蝶螺子形状のもので２つ以上設けられたもの、あるいはまた、操作レバーに替えてダイヤル状の操作ノブ等に形成してなるもの等とした支軸材とすることもできる。
以下、図面に示す幾つかの代表的な実施例について詳述することにより、この発明に包含される圧着用工具の構成がより具体的且つ明確に把握できるようにすることとする。
【００１３】
【実施例１】
先ず、図１の圧着用工具の組立てられた状態を示す斜視図、図２の圧着用工具の分解された状態を示す分解斜視図、図３に示す図１の側面図、及び図４に示す図１の平面図に示される事例は、この発明の最も代表的な構成からなるものである。
即ち、この事例の圧着用工具１５は、図２の全体の分解斜視図が示すとおり、圧着用工具１５の主要部分を構成する第１工具本体１６および第２工具本体１７とを備えており、第１工具本体１６は、先端部に一方の顎部１８を備え、他端側に柄部１９を備え、中途部に顎部１８の回動方向に直交する通孔２０，２１，２２が顎部側から柄部１９側に沿って２つ以上穿設された一方の枢着部２３を備え、第１工具本体１６に対を成す前記第２工具本体１７の中途部には、前記枢着部２３に対応する他方の枢着部２４が設けられ、この枢着部２４には前記通孔２０，２１，２２に同心状に対応する複数の他方の通孔２５，２６，２７を備え、中途部の先端部には一方の顎部１８に対応する他方の顎部２８を備え、他端側には前記柄部１９に対応する他方の柄部２９が設けられており、互いの枢着部２３，２４は何れか一対の通孔に選択的に貫通される支軸材を備えた連結装置３０により回動自在に連結されている。
【００１４】
一方の顎部１８および他方の顎部２８は、双方の柄部１９，２９に対してＴ字形状を成して形成された直線的なエッジ３１を備えており、互いのエッジ３１は同一直線上で一致する如く形成され、精度良く板金を挟み込むことができるように構成されている。
また、柄部１９，２９には、滑り止めのための環状の溝３２が長手方向に沿って複数刻設されている。前記枢着部２３は、顎部１８に形成されたエッジ３１に直交する側壁面を備えて成り、この側壁面は、柄部１９よりも幅広く形成され、この側壁面に対して直交する方向に通孔２０，２１，２２が穿設されている。
これらの複数の通孔２０，２１，２２は、夫々の軸心が平行に形成され、且つ、顎部１８の回動方向に対して直交する方向に向けられ、夫々が第１工具本体１６の長手方向に沿って、例えば、等間隔をもって配されると共に、これら通孔２０，２１，２２は、互いを連結する如く形成された連通部３３と共に設けられている。
【００１５】
この実施例では、通孔２０，２１，２２は、連通部３３により互いに連通した構造としているが、夫々の通孔２０，２１，２２は、後述する連結装置３０の支軸材を枢支するに充分な周面を備えており、軸ズレを生じる虞れはない。前記他方の通孔２５，２６，２７もまた同様の連通部３３により連通されているが、支軸材の軸ズレ等の生ずる虞はない。
【００１６】
通孔２０，２１，２２に対応する枢着部２４には、これらの通孔２０，２１，２２に対応する同心状の他方の通孔２５，２６，２７が穿設されていて、顎部１８，１９のエッジ３１を互いに一致させた場合に、双方の通孔２０，〜２２および２５，〜２７の何れか一対が同心状に位置することが可能となる構造に形成されている。
【００１７】
このように構成された圧着用工具１５の一対の枢着部２３，２４は、前述の連結装置３０、即ち、手指により着脱可能なボルト３４およびナット３５を備え、ワッシャー３６を介在することにより、第１工具本体１６と第２工具本体１７とを互いに回動可能な状態に連結するようにした連結装置３０によって枢着されている。
ボルト３４は、中途部に支軸材を形成し先端部に雄ねじが刻設され、基端部には抜け止めの頭部３４ａが形成されると共に、ナット３５には、蝶螺子を成す一対の操作片３７が設けられ、手指による締め付けおよび分解が可能となる構造とされている。
【００１８】
また、圧着用工具１５の、例えば第２工具本体１７の枢着部２４に直交する側壁面には、係合体３８が２本のネジ３９，３９によって結合される。そして、この係合体３８は、第２工具本体１７と別体で製造された板状体とし、組立てにより一体化されものとしているが、当然この構成だけに限定されるものではなく、例えば、第２工具本体１７を製造する際に同時に一体形成するようにしたものとすること等も可能である。
【００１９】
係合体３８は、例えば矩形状の規制片４０，４１，４２を一体に備えたものとし、これら規制片４０，４１，４２を、ボルト３４の頭部３４ａの突出している枢着部２４の側面よりも外側に突出した状態とすると共に、規制片４０，４１，４２は、通孔２５，２６，２７の夫々が穿設された位置に対応して配置されるようにし、通孔２５，２６，２７の軸心と夫々同じ方向に延出させる。そして、ボルト３４の頭部３４ａには、例えば矩形状の規制片４０，４１，４２の中、何れか対応する１つに係合する鈎環４３の基端が回動自在に枢着されると共に、該鈎環４３により、ボルト３４は、規制片４０に係合され、その回動が規制されることとなる。
【００２０】
なお、規制片４０，４１，４２は、係合体３８に設けられ、鈎環４３が回動され係合することにより、ボルト３４の回転を阻止する機能を果たすようにしているが、勿論この構造だけに限定される訳ではなく、例えば、規制片は、ボルト３４の頭部３４ａに形成された、図示しない六角頭が没入して嵌合する状態に形成された六角形状の凹部であってもボルト３４の回転を止める構造とすることができる外、ボルト３４の頭部３４ａから径方向に延出された図示しない係合棒を、枢着部２４に立設、形成した図示しない凸部に係合するようにした構造によっても同様の回転止め効果を奏することができるものとなる。
さらに、ボルト３４の頭部３４ａには鈎環４３を設け、ナット３５には操作片３７を設けた構造としているが、逆にボルト３４の頭部３４ａ側に操作片３７を設け、ナット３５側に鈎環４３等回転止めとなる適宜構造部を設けるようにしたものとすることも勿論可能である。
【００２１】
【実施例２】
図５の圧着用工具４５の分解斜視図、図６の圧着用工具４５の組立て状態の側面図、図７の圧着用工具４５の組立て状態の平面図、および図８の圧着用工具４５の斜視図には、この発明の他の代表的な構成からなる圧着用工具４５の実施例が示されている。
圧着用工具４５は、主要部分を第１工具本体４６と第２工具本体４７とから構成されている。
【００２２】
先ず、第１工具本体４６は、先端部に一方の顎部４８を備え、他端側に柄部４９を備え、中途部には顎部４８の回動方向に直交する通孔５０，５１が顎部４８側から柄部４９側に沿って所定間隔をもって２つ穿設された枢着部５２が設けられている。
また、第２工具本体４７の中途部には、前記枢着部５２に対応する他方の枢着部５３が設けられ、この枢着部５３には、枢着孔５０，５１に同心状に対応する複数の他方の通孔５４，５５が穿設されると共に、中途部の先端部には、一方の顎部４８に対応して対を成す他方の顎部５６が設けられ、他端側には柄部４９と対を成す他方の柄部５７が設けられている。
そして、互いの枢着部５２，５３には、何れか一対の通孔５０，５１，５４，５５に選択的に貫通する支軸材を備えた着脱可能な連結装置５８が設けられ、前記した第１工具本体４６と第２工具本体４７とが互いに回動自在に枢着されている。
【００２３】
支軸材を含むこの連結装置５８について更に詳述すると、一方の通孔５０，５１は、互いに連通部５９により連通されていて、夫々後述する支軸材の軸心を保持するに充分な周面を持って形成され、この連通部５９の存在があっても、支軸材の枢支に何ら支障を来すことはない。
さらに、第１工具本体４６の枢着部５２の第２工具本体４７側に面する側面には、通孔５０，５１の双方を含む長溝状の掘り込み部６０が形成されるようにする一方、他方の通孔５４，５５にも、双方の通孔５４，５５を連通する連通部６１が設けられ、夫々後述する支軸材の軸心を保持するに充分な周面を持っており、連通部６１が形成されていても、支軸材の枢支に何らの支障も生じさせることはない。
【００２４】
一方の通孔５０，５１側からは、連結装置５８における支軸材を構成するボルトが挿入され、第２工具本体４７の他方の通孔５４，５５も貫通状とし、該通孔５４，５５から突出したボルトの先端部に、ワッシャー６３を介在してなるナット６４を螺合することにより、枢着部５２，５３同士を回動自在に連結している。
ボルトの頭部６２ａの基部には、鍔部を通孔５０，５１の縁部に係合するフランジ部６５を備え、頭部６２ａの端部側には凸条のつまみ６６が形成されている。また、ナット６４には、蝶螺子を形成する一対の操作片６７，６７が設けられ、これらのボルト６２とナット６４とにより手指による操作で螺合および螺解が可能な、連結装置５８が構成されている。
【００２５】
この連結装置５８における支軸材を構成するボルトは、フランジ部６５と連通部５９の隙間ギャップに略相当する直径で遊嵌部６２に連なるネジ切り部との間に規制突子部を介して遊嵌部６２が形成された構造のものとなし、該遊嵌部６２は、第１工具本体の通孔５０，５１に遊嵌状となるだけの長さを有し、その部分の断面が、通孔５０，５１内径に略相当する巾広断面部分と、該巾広断面部分に略直交した側となる連通部５９の隙間ギャップに略相当する細身断面部分とからなる断面太鼓状の特殊断面に形成されていて、遊嵌部６２の細身断面部分を利用して該連結装置５８のボルト（上記特殊断面とした遊嵌部６２、規制突子部およびその先のネジ切り部）が連通部５９隙間ギャップ内に貫通可能で、しかも左右への移動も可能となるため、このボルトを連通部５９に貫通させた後、横滑り状に移動させて何れかの通孔５０あるいは５１に達したところで、つまみ６６によってボルトをその軸芯周りに９０°手指で回動操作し、特殊断面とした遊嵌部６２の細身断面部分が連通部５９に直交する姿勢をとれば、ボルトは、連通部５９の隙間ギャップ内に入り込めず、したがって、連結装置５８自体は、選択された何れかの通孔５０あるいは５１内に安定して止どめ置かれる状態となる。
【００２６】
前記実施例１では、連結装置３０は、鈎環４３を規制片４０に係合することにより、第２工具本体１７に対するボルト３４の回動が規制される構造としていた、この実施例においては、規制突子部とナット６４のネジ切り部への螺合、締め付けとによってボルトを第２工具本体４７に仮固定できる構造を実現するようにしている。
但し、この仮固定状態においても、遊嵌部６２とネジ切り部との境に形成した前述の規制突子部が、段付き通孔の長円形あるいは円形の掘り込み部６０内に納まる（即ち、フランジ部６５裏面から遊嵌部６２および該規制突子部全体までが、第１工具本体４６の枢着部肉厚内から食み出さない）構造に形成されていることから、第１工具本体４６および第２工具本体４７各枢着部対抗面間に殆ど空隙を生じさせない構造となり、したがって、工具としての圧着操作時でも第１工具本体４６と第２工具本体４７とがガタついたり、捩れ現象を起こす虞はないものとなる。
【００２７】
【作用】
このように構成され、組立てられた圧着用工具１５は、図３および図４に示す如く、通孔２０，２５にボルト３４が貫通された状態では、通孔２２，２７に貫通された場合に比較し、矢印Ｄで示される顎部１８，２８による圧着力は大巾に増強される。
試作したものの実験によれば、図８に示すように手Ｈで握り、約３０Ｋｇの握力Ｅにより柄部１９，２９を操作した場合、Ｃで示す通孔２２，２７にボルト３４を貫通してあれば、その圧着力Ｄは約７１Ｋｇであり、同じ約３０Ｋｇの握力Ｅにより、Ａで示す通孔２０，２５にボルト３４を貫通して使用すれば、その圧着力Ｄは約１７３Ｋｇとなる。つまり、圧着力Ｄは従来の２倍以上の約２．４倍にまで達するよう改良されたことになる。
また、中間位置Ｂで示される通孔２１，２６にボルト３４を貫通した場合には、約１．２倍程の８８Ｋｇの圧着力Ｄを得ることが可能となる。
なお、これらの実験値は、支軸材からの手Ｈの位置や通孔２０，２１，２２およびそれらに対応する通孔２５，２６，２７の離反間隔によって当然変わり得ることはいうまでもない。
【００２８】
また、実施例２で示す圧着用工具４５の場合にも、図６に示す如く通孔５０，５４にボルト６２を貫通、使用すれば、通孔５１，５５に貫通された場合に比較し、矢印Ｄで示される顎部４８，５６による圧着力Ｄを大巾に改善し得ることが確認されている。
以上のように、ボルト３４の枢支位置を変更することにより、圧着力Ｄを自在に変更することができるので、この実施例における圧着用工具１５の適用範囲は、従来の圧着用工具に比較して飛躍的に拡大し、従来は同一の圧着用工具では加工が不可能であった、例えば、薄鉄板と多重鉄板とを同一の圧着用工具１５により曲げ加工することを可能にした。これにより、従来必要であった多数の圧着用工具を１本で兼用することを可能にし、工具費用を削減すると共に、メンテナンスに必要な労力や経費を削減することができる
【００２９】
また、この実施例における圧着用工具１５は、ナット３５に操作片３７を備え、且つ、ボルト３４の頭部３４ａには規制片４０，４１，４２の何れか１つに係合する鈎環４３を設けたので、手指によって操作片３７を回動操作すれば、極めて容易にボルト３４とナット３５の螺合および螺解作業を行うことができる。ボルト３４とナット３５の螺合および螺解作業にあっては、前記鈎環４３が規制片４０，４１，４２の何れか１つに係合することで、ボルト３４が自由に回動することを規制し、ナット３５を回動操作した場合に確実な螺合および螺解ができるようになっている。
また、実施例２の場合、ボルト６２の頭部６２ａにつまみ６６を設け、ナット６４に操作片６７，６７を設けたことにより、手指による操作が楽に行えるようになり、螺合および螺解作業を容易に行うことが出来、工具を必要とせずに、枢着孔５０，５１，５４，５５への差し替えが極めて簡単にできるようになっている。
【００３０】
【効果】
以上のとおり、この発明の圧着用工具は、先ず何よりも、顎部、即ち、圧着のための作用部における圧着力が、支軸部の位置を変更することにより、被作用部である金属板折返し重なり部を圧着する上で最適なものに変更することができ、極めて操作性に秀れた圧着用工具を実現できるという特徴を挙げなければならない。
したがって、従前までの圧着用工具のように、加工の対象となる素材の材質や構造強度等に違いがある圧着作業で、圧着に手間取ったり、あるいは圧着程度が均一化できない等といった不都合を無くすことができると共に、それらの場面に応じるため、何種類かの圧着用工具を準備し、それを使い分けなければならない等といった繁雑さも見事に解消できることになる。
【００３１】
特に、実施例に示すこの発明を代表する構造からなる金属板折返し重なり部圧着用工具では、ボルトおよびナットによって支軸部を構成すると共に、枢着部における通孔２０，２１，２２と２５，２６，２７、あるいは５０，５１と５４，５５のように、何れも連通部３３あるいは５９で連通状とされ、それらボルトおよびナットの支点位置の選択、変更が容易になるようにすると共に、鈎環４３と規制片４０との組合せ構造、あるいは、規制突子部とナット６４との組合せ構造を採用して、簡単な操作で選択した支軸材位置を確実に固定するようにしたことから、製造も容易であって、大量生産に適したものとすることができる上、操作製においても特に秀れたものとすることができる。
【００３２】
叙上の如く、この発明は、金属板折返し重なり部圧着用工具として、その構成上の特徴から、圧着操作性は固よりのこと、その保管、管理上、製造上等全ての面で従来品に勝り、板金加工業者等関係者から高く評価されるものと予想される。
【図面の簡単な説明】
【図１】実施例として示す圧着用工具の組立てられた状態を示す斜視図である。
【図２】図１の圧着用工具の分解された状態を示す分解斜視図
【図３】図１の圧着用工具の側面図である。
【図４】図１の圧着用工具の平面図である。
【図５】他の実施例として示す圧着用工具の分解斜視図である。
【図６】図５の圧着用工具の組立て状態の側面図である。
【図７】図５の圧着用工具の組立て状態の平面図である。
【図８】図５の圧着用工具の使用状態における斜視図である。
【図９】従来の圧着用工具の構造を示す分解斜視図である。
【図１０】図９の圧着用工具を示す側面図である
【図１１】図９の圧着用工具を示す平面図である。
【符号の説明】
１５実施例１の圧着用工具
１６第１工具本体
１７第２工具本体
１８第１工具本体の顎部
１９同柄部
２０，２１，２２同通孔
２３同枢着部
２４第２工具本体の枢着部
２５，２６，２７同通孔
２８同顎部
２９同柄部
３０連結装置
３４ボルト
３４ａ同ボルトの頭部
３５ナット
３７操作片
３８係合体
４０，４１，４２規制片
４３鈎環
４５実施例２の圧着用工具
４６第１工具本体
４７第２工具本体
４８，５６第１工具本体または第２工具本体顎部
４９，５７同柄部
５０，５１，５４，５５同通孔
５２，５３同枢着部
５８連結装置
５９連通部
６２遊嵌部[0001]
OBJECT OF THE INVENTION
The present invention relates to an improved structure of a tool which is mainly one of sheet metal working tools and which crimps a folded overlap portion of metal plates, commonly referred to as a “tsukami”. If there is an excess or deficiency in the crimping force required for flattening depending on the material thickness and the number of turns, the optimum crimping can be achieved by changing the fulcrum position smoothly and in multiple stages with a simple operation. It is an object of the present invention to provide a tool for crimping an overlapped portion of a metal plate having a novel structure that makes it possible to select a force and increase work efficiency.
[0002]
[Prior art]
In general, a tool used for sheet metal processing, particularly for crimping a folded overlap portion of metal plates, is shown in FIG. 9 showing an exploded perspective view, FIG. 10 showing a side view thereof, and a plan view thereof. This is a crimping tool commonly called “tsutsumi” having a structure as shown in FIG.
That is, this crimping tool 1 includes a first tool body 2 and a second tool body 3, both of which are combined in a cross shape, and a support shaft material 4 that pivotally supports the cross section is used as a rotation center. A scissors-like structure pivotally attached, that is, an operation part formed before the support shaft material 4, for example, a blade part, can be cut by an operation of grasping or loosening the handle side by hand. The first tool main body 2 has a warped upper jaw portion 5 formed in the immediate vicinity of the distal end side of the pivot attachment portion 7, and a comparison is made from the pivot attachment portion 7 to the rear end side. The second tool main body 3 to be combined with the through hole 8 having an axial center perpendicular to the rotational direction of the upper warped upper jaw 5 is provided in the pivoting portion 7. It has substantially the same structure as the first tool body, and the back of the upper warped upper jaw portion 5 of the first tool body 2 is located in the immediate vicinity of the distal end side of the pivoting portion 7. An upper warped lower jaw portion 9 having a surface shape which can be attached to the upper end portion is formed, and a relatively long upper handle portion 10 is provided on the rear end side from the pivot attachment portion 11, and the upper attachment portion 11 is provided on the pivot attachment portion 11. 5 is formed in a structure in which a through-hole 12 having an axis perpendicular to the rotation direction is formed.
[0003]
The first tool main body 2 and the second tool main body 3 are configured such that the pivot cores 7 and 11 are in contact with each other and the through-holes 8 and 12 are aligned with each other so that the shaft cores coincide with each other. Is inserted from the outside of one through-hole 8, and the washer 13 is fitted into the flange 4 protruding from the other through-hole 12, and then the tip portion is caulked and crushed to form the head at the other end. If it is necessary to improve the operability of the pinching operation, the user can request it by himself or the manufacturer, etc. It is used for work after adjustment by plastic deformation or the like so that the opening amount and angle of 10 are optimum.
[0004]
When performing sheet metal processing to crimp the folded overlap portion of the metal plate P using the conventional crimping tool 1, the object to be processed is, for example, a single folded overlap portion of about 2 to 3 thin iron plates, Or if it was the 2-3 times folding overlap part P1 etc. of the one iron plate P, the crimping | compression-bonding operation could be completed without difficulty with the conventional crimping tool. However, the folded overlap portion P1 of the relatively thick iron plate P, or the folded overlap portion having high rigidity as a whole, such as a crimping operation such as a single folded overlap portion of 4 to 5 or more iron plates P that is not thick. In the case of the crimping work, the crimping tool formed for normal work becomes extremely difficult, and the actual work cannot be carried out, or it takes a lot of time with considerable force, many times The work had to be repeated, and the work efficiency was not only greatly reduced, but the finished condition was considerably deteriorated.
Therefore, when performing such sheet metal processing, it is necessary to prepare a plurality of crimping tools 1 having different structures depending on the object of work, such as sheet thickness and material, and use them properly as necessary. Therefore, not only a lot of cost was required for the tools, but also an unnecessary burden was imposed on maintenance.
[0005]
In general, not only for sheet metal working tools, but also for tools such as slip joint pliers, tan and groove pliers, etc., which have improved the handleability by changing the position of the support shaft material 4 In the case of tools that employ slip joints that are already known or well-known, and the technical novelty of changing the support material mounting position with these tools is not recognized. As a result, there is no change in the force transmitted to the action part, for example, the part that performs the action of gripping, grasping, cutting, etc., but most of them are affected parts, i.e. Adjustment that makes it convenient to match the size of the side to be gripped, gripped, and cut, that is, adjust the opening and closing of the working part (as a result, with the tool in the adjusted state) The working parts are not in direct contact with each other, and the action that can be dealt with before adjustment cannot be performed), and the support shaft is attached to adjust the force applied to the working part. There is no one that adopts the technical idea that the position can be freely changed. Especially, the crimping tool that is the technical field of the present invention still employs the tool as described above. It is not too much.
[0006]
The inventor of this application considers the above-described drawbacks of the conventional crimping tool 1 and the situation of general tools, and does not interfere with the target range of action performed by the action part, and the strength of the action part crimping force is increased. The improvement and development of the crimping tool 1 that can change the thickness step by step or steplessly, the position of the support shaft material 4 as a fulcrum can be changed freely while repeating various trials and errors, As a result of continuing research and development of crimping tools with a structure that allows the crimping force to be changed as required, the support shaft material 4 is not deformed or dropped even by a large shearing force generated by processing operations. The shaft structure of the first tool body 2 and the second tool body 3 can be reliably maintained, and the fulcrum position can be changed by a very simple operation. Without using tools etc. The present invention has succeeded in realizing a crimping tool having a novel structure having a temporary fixing structure capable of actual position fixing. In the following, the details of the configuration will be described with reference to some examples of the present invention shown in the drawings. The explanation of these embodiments will be explained in order while being used together.
[0007]
[Structure of the invention]
As can be clearly understood from the embodiments representing the present invention shown in the drawings, the crimping tool of the present invention basically comprises the following configuration.
That is, the support shaft material can be inserted, and a wide portion is formed in the vicinity of the distal end side of the pivotal attachment portion formed with a plurality of through holes communicating with the communication portion that allows the support shaft material to slide between each other. A first tool main body formed with an upper warped upper jaw part and a lower handle part having a relatively long rear end side from the pivotally attached part, and a support shaft material arranged in correspondence with the through hole of the first tool main body. Near the tip side of the pivoting portion formed with a plurality of through-holes communicating with each other through a communicating portion that allows the support shaft material to be slidably movable between the first tool body and the first tool body. A second tool body in which a wide upper warped lower jaw portion having a surface shape capable of being attached to the back surface of the warped upper jaw portion is formed, and a rear end side from the pivotally attached portion is formed in a relatively long upper handle portion. The first tool main body and the second tool main body are in contact with the pivoting portions, and the first tool main body is warped. Combined with a cross structure including a state in which the second tool body upper warped mandibular surface can be attached to the back surface of the part, a plurality of through holes of the first tool body and the second tool body are attached to each of the pivot portions. For both of the selected through holes corresponding to each other, the support shaft material is inserted so as to be able to change its pivoting position so that the first tool body and the second tool body have scissors-like structures, The communicating portion gap gap between the through holes is formed to be smaller than the bore diameter of each through hole, and the support shaft material has at least the cross section of the portion of the tool body that passes through the through hole. Either a wide cross-section portion substantially corresponding to the inner diameter and a narrow cross-section portion substantially corresponding to the communication portion gap gap on the side substantially orthogonal to the wide cross-section portion, the same supporting shaft material is selected. When it is positioned in the through hole and its wide cross-sectional portion is orthogonal to the communicating portion, The hook ring that is pivotally connected to the stop for the head loss of the support shaft member proximal end, although either of the first tool body or the second tool body located on the support shaft member proximal end Pivotal part Of the engagement body attached to Pivotal part A metal plate folded overlapping portion crimping tool that requires a configuration in which a temporary fixing means for preventing rotation of the supporting shaft member is provided by engaging with a regulating piece protruding outward from the side surface. is there.
[0008]
Furthermore, the present invention includes A wide upward warp in the immediate vicinity of the distal end of the pivoting portion formed with a plurality of through holes that can be inserted through the support shaft and communicated with each other through a communication portion that allows the support shaft material to be slidably movable. A first tool body formed in a lower handle with a relatively long rear end side from the pivotally attached portion, and a support shaft material inserted in an arrangement corresponding to the through hole of the first tool body The first tool main body is warped in the immediate vicinity of the distal end side of the pivoting portion formed with a plurality of through-holes communicating with each other through a communicating portion that enables sliding movement of the support shaft material between them. A second upper tool body formed with a wide upper warped lower jaw portion that has a surface shape that can be attached to the back surface of the upper jaw portion, and a relatively long upper handle portion from the pivotally attached portion to the rear end side; The first tool main body and the second tool main body have respective pivoting portions in contact with each other, and the first tool main body upper warped upper jaw Combined with a cross structure including a state in which the upper surface of the second tool body upper warped lower jaw part can be attached to the back surface, and in a plurality of through holes of each pivot part of the first tool body and the second tool body The shaft material is inserted into the corresponding through holes corresponding to each other in such a manner that the pivoting position thereof can be freely changed, and the first tool body and the second tool body are made of scissors-like structures. The gap gap of the communication portion between the holes is formed smaller than the diameter of each through-hole, and one or both of the first tool main body and the second tool main body, or the pivot contact portion abutting surface side of all the through holes, An oval shape including a hole, or a shape including a stepped through hole formed by being dug shallowly into a circular shape including individual through holes for each through hole, while the support shaft member is connected to the head, An insertion member composed of a threaded portion extending linearly from the loose fitting portion, and screwed into the threaded portion of the insertion member The insertion member loosely fitting portion has a length that is loosely fitted in the through hole of either the first tool body or the second tool body, The loosely fitting portion is formed of a wide cross-sectional portion substantially corresponding to the inner diameter of the through hole and a narrow cross-sectional portion substantially corresponding to the communication portion gap gap on the side substantially orthogonal to the wide cross-sectional portion. The width of the stepped through-hole is equal to or less than the cross-sectional width of the narrow cross-sectional portion in the cross-section of the loose fitting portion at the boundary with the threaded portion having a diameter substantially corresponding to the gap gap of the communicating portion connected to It is assumed that the control protrusions of a length and thickness that fit within the digging part of the boss are formed so as to project outward from the wide cross-section part, and screwed into the threaded part of the control protrusion and the nut Due to the tightening, the support shaft material is not loosely fitted to the previous loosely fitting portion. A temporary fixing means that is temporarily fixed to either the first tool body or the second tool body on the side; Includes a tool for crimping the overlapped portion of the folded metal plate having the above structure
[0009]
The plurality of through holes formed in each tool main body are formed in an arrangement structure corresponding to the pivoting portion between the first tool main body and the second tool main body, and the supporting shaft material is selectively selected between the corresponding through holes. The first tool main body and the second tool main body can be opened and closed in a state of being combined in a cross shape with the support shaft material as a fulcrum. It is formed as an independent unit at an appropriate interval, or they are connected through a communication part in the lateral direction, or formed as a long hole (a hole having a structure in which through holes are continuously connected). In any case, it is formed with a size, shape, or peripheral surface finish that is not disadvantageous in eliminating shaft misalignment of the support shaft material.
[0010]
The jaw part is a structural part formed in the shape of a warp that is indispensable as a crimping tool (exactly, it is wide in the lateral direction). Both the first and second tool bodies are at the tip of the pivot part. The jaw part of the first tool body is an upper warped upper jaw part, the surface of the upper warped lower jaw part of the second tool body is selected on the back side, and the position of the temporary support shaft material is selected and changed. Even so, the direction of formation from the pivot part and the shape of the surface to be attached to each jaw part are regulated so that they are combined so as to be realized so as to realize a state of being substantially attached. Must be.
Both the first and second tool bodies have a handle shape that is a relatively long thin rod from the pivoting portion to the rear end side. The first tool body has a lower handle, and the second tool body has an upper handle. The first and second tool main bodies are combined in close contact with each other at the pivotally attached portions so that the jaws are combined in the above-described arrangement.
[0011]
There are substantially two or more support shaft members formed on each pivot portion of the first tool main body and the second tool main body, which have a combined structure restricted as described above (that is, those formed in long holes). The first tool main body and the second tool with the shaft center of the supporting shaft member as the center of rotation. The main body fulfills the function of realizing a pivotable structure with the respective pivoting portions crossed, that is, a scissors-like structure.
[0012]
Therefore, this support shaft material is a combination of a bolt, nut or wing nut that has been adopted so far, a tip that is caulked with a scissors, a split pin stopper, a washer stopper, etc. Any application that can perform the function is possible. For example, any one of the bolt and the nut is engaged with a restriction provided on either the first tool body or the second tool body. The rotation is regulated so that the rotation operation becomes easier when either the nut or the bolt is operated, or the rotation prevention structure similar to that shown in the embodiments described later. , A positioning structure, a structure that restricts the slide movement, or a structure that combines them is appropriately combined with a known structure, or a structure that is uniquely incorporated. A regulation piece that corresponds to the drilling position of two or more through holes formed in the outer part of either the tool main body or the second tool main body and extends parallel to the axis of the through hole is provided. And the base end of the collar ring that removably engages with the restriction piece is pivotally attached to any one of the head of the bolt or the nut inserted into the through hole, Either a head of the bolt inserted into the through hole or a nut is provided with an operating piece that facilitates operation with fingers on the other side, or a bolt or nut of this supporting shaft is used. The operation piece provided is equipped with an operation lever, or the operation piece is provided with two or more butterfly screws, or is formed on a dial-like operation knob instead of the operation lever It can also be used as a support shaft material.
In the following, several representative embodiments shown in the drawings will be described in detail so that the configuration of the crimping tool included in the present invention can be grasped more specifically and clearly.
[0013]
[Example 1]
First, a perspective view showing an assembled state of the crimping tool of FIG. 1, an exploded perspective view showing an exploded state of the crimping tool of FIG. 2, a side view of FIG. 1 shown in FIG. 3, and FIG. The case shown in the plan view of FIG. 1 consists of the most representative configuration of the present invention.
That is, the crimping tool 15 in this example includes the first tool body 16 and the second tool body 17 that constitute the main part of the crimping tool 15 as shown in the entire exploded perspective view of FIG. The first tool body 16 includes one jaw portion 18 at the distal end portion, a handle portion 19 at the other end side, and through holes 20, 21, and 22 perpendicular to the rotation direction of the jaw portion 18 in the middle portion. One or more pivoting portions 23 drilled from the portion side along the handle portion 19 side are provided, and the pivoting portion is provided in the middle of the second tool body 17 that forms a pair with the first tool body 16. The other pivoting portion 24 corresponding to the portion 23 is provided, and the pivoting portion 24 includes a plurality of other through holes 25, 26, 27 corresponding to the through holes 20, 21, 22 concentrically, The middle end portion is provided with the other jaw portion 28 corresponding to one jaw portion 18 and the other end side corresponds to the handle portion 19. The other handle portion 29 is provided, and the pivot portions 23 and 24 are rotatably connected by a connecting device 30 including a support shaft member that is selectively passed through one of the pair of through holes. Yes.
[0014]
One jaw portion 18 and the other jaw portion 28 are provided with straight edges 31 formed in a T shape with respect to both handle portions 19 and 29, and the respective edges 31 are the same straight. They are formed so as to coincide with each other on the line, and are configured so that the sheet metal can be sandwiched with high accuracy.
In addition, a plurality of annular grooves 32 for preventing slipping are formed in the handle portions 19 and 29 along the longitudinal direction. The pivot portion 23 includes a side wall surface orthogonal to the edge 31 formed on the jaw portion 18, and this side wall surface is formed wider than the handle portion 19 and extends in a direction perpendicular to the side wall surface. Through holes 20, 21, 22 are formed.
The plurality of through holes 20, 21, and 22 are formed so that their respective axis centers are parallel to each other and are directed in a direction orthogonal to the rotation direction of the jaw portion 18, and each of the through holes 20, 21, and 22 is directed to the first tool body 16. For example, the through holes 20, 21, and 22 are provided along with the communication portion 33 formed so as to be connected to each other along the longitudinal direction.
[0015]
In this embodiment, the through holes 20, 21, and 22 are structured to communicate with each other through the communication portion 33, but the respective through holes 20, 21, and 22 pivotally support a support shaft member of the coupling device 30 that will be described later. Therefore, there is no possibility of causing a shaft misalignment. The other through holes 25, 26, and 27 are also communicated by the similar communicating portion 33, but there is no risk of shaft misalignment or the like of the support shaft material.
[0016]
Concentric other through holes 25, 26, and 27 corresponding to these through holes 20, 21, and 22 are formed in the pivot portions 24 corresponding to the through holes 20, 21, and 22, and the jaw portion When the edges 31 of the 18 and 19 are made to coincide with each other, any one of the through holes 20 to 22 and 25 to 27 can be concentrically positioned.
[0017]
The pair of pivot portions 23 and 24 of the crimping tool 15 configured as described above includes the above-described connecting device 30, that is, the bolt 34 and the nut 35 that can be attached and detached by fingers, and the washer 36 is interposed, The first tool main body 16 and the second tool main body 17 are pivotally connected by a connecting device 30 that connects the first tool main body 16 and the second tool main body 17 in a rotatable state.
The bolt 34 is formed with a support shaft material in the middle part, a male screw is engraved at the tip part, a head 34a for retaining is formed at the base part, and a pair of nuts forming a thumbscrew on the nut 35. An operation piece 37 is provided, and the structure can be tightened and disassembled with fingers.
[0018]
Further, the engagement body 38 is coupled to the side wall surface of the crimping tool 15, for example, orthogonal to the pivoting portion 24 of the second tool body 17 by two screws 39. The engaging body 38 is a plate-like body manufactured separately from the second tool main body 17 and is integrated by assembling. However, it is naturally not limited to this configuration. When the two tool body 17 is manufactured, it can be formed integrally at the same time.
[0019]
The engaging body 38 is integrally provided with rectangular regulating pieces 40, 41, 42, for example, and these regulating pieces 40, 41, 42 protrude from the head 34a of the bolt 34. Pivotal part 24, and the restricting pieces 40, 41, 42 are arranged corresponding to the positions where the through holes 25, 26, 27 are formed, It extends in the same direction as the axis of 25, 26, 27. And the base end of the collar ring 43 engaged with any one of the rectangular regulation pieces 40, 41, 42, for example, is pivotally attached to the head 34a of the bolt 34 so as to be rotatable. At the same time, the bolt 34 is engaged with the restricting piece 40 by the hook ring 43 and its rotation is restricted.
[0020]
The restricting pieces 40, 41, and 42 are provided on the engaging body 38, and have a function of preventing the rotation of the bolt 34 by rotating and engaging the collar ring 43. For example, the restricting piece may be a hexagonal recess formed in the head 34a of the bolt 34 so that a hexagonal head (not shown) is immersed and fitted. In addition to the structure in which the rotation of the bolt 34 can be stopped, an engaging rod (not shown) extending in the radial direction from the head 34a of the bolt 34 is erected on the pivot portion 24 and formed on a convex portion (not shown). A similar anti-rotation effect can also be achieved by the engaged structure.
Further, the head 34a of the bolt 34 is provided with a hook ring 43 and the nut 35 is provided with an operation piece 37. Conversely, the operation piece 37 is provided on the head 34a side of the bolt 34 and the nut 35 side. Of course, it is possible to provide an appropriate structure portion for preventing rotation of the collar ring 43 and the like.
[0021]
[Example 2]
5 is an exploded perspective view of the crimping tool 45 in FIG. 5, a side view of the crimping tool 45 in the assembled state in FIG. 6, a plan view of the crimping tool 45 in the assembled state in FIG. 7, and a perspective view of the crimping tool 45 in FIG. The figure shows an embodiment of a crimping tool 45 having another typical configuration of the present invention.
The main part of the crimping tool 45 is composed of a first tool body 46 and a second tool body 47.
[0022]
First, the first tool body 46 includes one jaw portion 48 at the distal end portion, a handle portion 49 at the other end side, and through holes 50 and 51 perpendicular to the rotational direction of the jaw portion 48 in the middle portion. Two pivoting portions 52 that are provided at a predetermined interval from the jaw portion 48 side to the handle portion 49 side are provided.
Further, the other pivotally mounted portion 53 corresponding to the pivotally mounted portion 52 is provided in the middle of the second tool body 47, and this pivotally mounted portion 53 corresponds to the pivoted holes 50 and 51 concentrically. A plurality of other through holes 54 and 55 are formed, and a pair of other jaw portions 56 corresponding to the one jaw portion 48 are provided at the front end portion of the middle portion, and the other end side is provided on the other end side. The other handle portion 57 that is paired with the handle portion 49 is provided.
Each of the pivot attachment portions 52 and 53 is provided with a detachable connecting device 58 having a support shaft material that selectively passes through any one of the pair of through holes 50, 51, 54, and 55. The first tool body 46 and the second tool body 47 are pivotally attached to each other.
[0023]
The connecting device 58 including the support shaft material will be described in further detail. One of the through holes 50 and 51 are connected to each other by a communication portion 59 and each has a sufficient circumference to hold the shaft center of the support shaft material described later. Even if the communication portion 59 is formed with a surface, it does not interfere with the pivotal support of the support shaft material.
Furthermore, a long groove-shaped digging portion 60 including both the through holes 50 and 51 is formed on the side surface of the pivoting portion 52 of the first tool body 46 facing the second tool body 47 side. The other through-holes 54 and 55 are also provided with a communication portion 61 that communicates both through-holes 54 and 55, and each has a sufficient peripheral surface to hold the shaft center of the support shaft material, which will be described later. Even if the communication part 61 is formed, it does not cause any trouble in the pivotal support of the support shaft member.
[0024]
Bolts constituting the support shaft member in the coupling device 58 are inserted from the one through-holes 50 and 51 side, and the other through-holes 54 and 55 of the second tool main body 47 are also penetrating. The nuts 64 having washers 63 are screwed onto the front ends of the bolts protruding from the pivots 52 and 53 so as to be pivotably connected.
The base portion of the bolt head portion 62a is provided with a flange portion 65 that engages with the edge portion of the through hole 50, 51, and a convex tab 66 is formed on the end portion side of the head portion 62a. . Further, the nut 64 is provided with a pair of operation pieces 67, 67 forming a butterfly screw, and a connecting device 58 is configured that can be screwed and unscrewed by the operation of a finger with the bolt 62 and the nut 64. Has been.
[0025]
The bolts constituting the support shaft material in the connecting device 58 are: Flange part 65 And a structure in which a loose fitting portion 62 is formed via a restricting protrusion between a threaded portion continuous with the loose fitting portion 62 and having a diameter substantially corresponding to a gap gap of the communicating portion 59. The portion 62 has a length sufficient to be loosely fitted in the through holes 50 and 51 of the first tool body, and the cross section of the portion has a wide cross-sectional portion substantially corresponding to the inner diameter of the through holes 50 and 51; It is formed in a special drum-shaped cross section composed of a thin cross section substantially corresponding to the gap gap of the communication portion 59 on the side substantially orthogonal to the wide cross section, and uses the narrow cross section of the loose fitting portion 62 Thus, the bolts of the connecting device 58 (the loose fitting portion 62 having the special cross section, the restricting projecting portion, and the threaded portion ahead thereof) can pass through the gap gap of the communicating portion 59 and can be moved to the left and right. Therefore, after passing this bolt through the communication part 59, move it in a skid When reaching one of the through holes 50 or 51, the bolt is rotated around the axis of the bolt by a 90 ° finger with a finger by 90 °, and the slender cross section of the loose fitting portion 62 having a special cross section is perpendicular to the communication portion 59. The bolt cannot enter the gap gap of the communication portion 59, and thus the connecting device 58 itself is stably retained in any selected through hole 50 or 51. It becomes a state.
[0026]
In the first embodiment, the coupling device 30 has a structure in which the rotation of the bolt 34 relative to the second tool body 17 is restricted by engaging the collar ring 43 with the restricting piece 40. In this embodiment, A structure in which the bolt can be temporarily fixed to the second tool body 47 by screwing and tightening the restricting protrusion and the threaded portion of the nut 64 is realized.
However, even in this temporarily fixed state, the above-described regulating protrusion formed at the boundary between the loose fitting portion 62 and the threaded portion fits in the oval or circular digging portion 60 of the stepped through hole (that is, From the back surface of the flange portion 65 to the loose fitting portion 62 and the entire restricting protrusion portion, the first tool is formed so as not to protrude from the thickness of the pivoting portion of the first tool body 46. The main body 46 and the second tool main body 47 have a structure in which almost no gap is generated between the respective opposing surfaces of the pivoting portions. Therefore, the first tool main body 46 and the second tool main body 47 are rattled even during the crimping operation as a tool. There is no risk of twisting.
[0027]
[Operation]
As shown in FIGS. 3 and 4, the crimping tool 15 constructed and assembled in this manner is inserted into the through holes 22 and 27 when the bolts 34 are passed through the through holes 20 and 25. In comparison, the crimping force by the jaws 18 and 28 indicated by the arrow D is greatly enhanced.
According to the experiment of the prototype, when it is gripped with the hand H as shown in FIG. 8 and the handle parts 19 and 29 are operated with a gripping force E of about 30 kg, the bolts 34 are passed through the through holes 22 and 27 indicated by C. If present, the crimping force D is about 71 kg, and if the bolt 34 is passed through the through holes 20 and 25 indicated by A with the same gripping force E of about 30 kg, the crimping force D is about 173 kg. That is, the crimping force D has been improved to reach about 2.4 times that of the conventional method.
Further, when the bolt 34 is passed through the through holes 21 and 26 indicated by the intermediate position B, it is possible to obtain a crimping force D of 88 kg, which is about 1.2 times.
Needless to say, these experimental values can naturally vary depending on the position of the hand H from the support shaft material and the separation distances of the through holes 20, 21, 22 and the corresponding through holes 25, 26, 27. .
[0028]
Further, in the case of the crimping tool 45 shown in the second embodiment, if the bolt 62 is passed through and used in the through holes 50 and 54 as shown in FIG. It has been confirmed that the crimping force D by the jaws 48 and 56 indicated by the arrow D can be greatly improved.
As described above, since the crimping force D can be freely changed by changing the pivot support position of the bolt 34, the application range of the crimping tool 15 in this embodiment is compared with the conventional crimping tool. Thus, for example, it was possible to bend a thin iron plate and a multiple iron plate with the same crimping tool 15, which could not be processed with the same crimping tool. As a result, a large number of crimping tools that have been required in the past can be used in a single tool, reducing tool costs and reducing labor and costs required for maintenance.
[0029]
Further, the crimping tool 15 in this embodiment includes an operation piece 37 on the nut 35 and a hook ring 43 that engages with any one of the regulation pieces 40, 41, 42 on the head 34 a of the bolt 34. Therefore, if the operation piece 37 is rotated by fingers, the bolt 34 and the nut 35 can be screwed and unscrewed very easily. In the screwing and unscrewing operation of the bolt 34 and the nut 35, the bolt 34 is freely rotated by the hook ring 43 engaging with any one of the restriction pieces 40, 41, 42. And when the nut 35 is rotated, it can be reliably screwed and unscrewed.
In the second embodiment, the knob 62 is provided on the head 62a of the bolt 62, and the operation pieces 67, 67 are provided on the nut 64, so that the operation with fingers can be performed easily. Can be easily performed, and replacement to the pivot holes 50, 51, 54, 55 can be performed very easily without the need for a tool.
[0030]
[Effect]
As described above, the crimping tool of the present invention, first and foremost, is a metal plate that is an actuated part by changing the position of the support shaft part by the crimping force in the jaw part, that is, the action part for crimping. It should be noted that the crimping tool can be changed to an optimum one for crimping the folded overlap portion, and a crimping tool having excellent operability can be realized.
Therefore, it is possible to eliminate the inconvenience such as troublesome crimping or the level of crimping cannot be made uniform in the crimping work that differs in the material and structural strength of the material to be processed like the conventional crimping tool. As well as being able to cope with these situations, the complexity of having to prepare several types of crimping tools and use them properly can be eliminated brilliantly.
[0031]
In particular, in the metal plate folded overlapping portion crimping tool having a structure representing the present invention shown in the embodiment, the supporting shaft portion is constituted by a bolt and a nut, and through holes 20, 21, 22, and 25, 26, 27, or 50, 51 and 54, 55 are all connected to each other at the communication portion 33 or 59 so that the selection and change of the fulcrum positions of these bolts and nuts can be facilitated. By adopting a combined structure of the ring 43 and the restricting piece 40, or a combined structure of the restricting protrusion and the nut 64, the position of the support shaft material selected by simple operation is securely fixed. Manufacture is also easy, and it can be made suitable for mass production, and can also be made particularly excellent in operation manufacturing.
[0032]
As described above, the present invention is a conventional tool for crimping overlapping portions of metal plates, because of its structural characteristics, and has excellent crimping operability, storage, management and manufacturing. It is expected that it will be highly valued by related parties such as sheet metal processors.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an assembled state of a crimping tool shown as an embodiment.
FIG. 2 is an exploded perspective view showing an exploded state of the crimping tool of FIG.
3 is a side view of the crimping tool of FIG. 1. FIG.
4 is a plan view of the crimping tool of FIG. 1. FIG.
FIG. 5 is an exploded perspective view of a crimping tool shown as another embodiment.
6 is a side view of the crimping tool of FIG. 5 in an assembled state.
7 is a plan view of the assembled state of the crimping tool of FIG. 5. FIG.
8 is a perspective view of the crimping tool in FIG. 5 in use.
FIG. 9 is an exploded perspective view showing the structure of a conventional crimping tool.
10 is a side view showing the crimping tool of FIG. 9;
11 is a plan view showing the crimping tool of FIG. 9. FIG.
[Explanation of symbols]
15 Crimping tool of Example 1
16 1st tool body
17 Second tool body
18 Jaw of first tool body
19 Same Pattern
20, 21, 22 Same hole
23 Pivoting Department
24 Pivot part of the second tool body
25, 26, 27
28 The same jaw
29 Same Pattern
30 coupling device
34 volts
34a Bolt head
35 nuts
37 Operation piece
38 Engagement body
40, 41, 42 Regulating piece
43 鈎 Ring
45 Tool for crimping of Example 2
46 1st tool body
47 Second tool body
48, 56 First tool body or second tool body jaw
49,57 Same part
50, 51, 54, 55
52 and 53
58 Connecting device
59 Communication
62 Free fitting part

Claims

A wide upward warp in the immediate vicinity of the distal end of the pivoting portion formed with a plurality of through holes that can be inserted through the support shaft and communicated with each other through a communication portion that allows the support shaft material to be slidably movable. A first tool body formed with an upper jaw and a lower handle on the rear end side that is relatively long from the pivotally mounted portion, and a spindle material can be inserted in an arrangement corresponding to the through hole of the first tool body. In addition, the first tool main body is warped in the immediate vicinity of the distal end side of the pivoting portion formed with a plurality of through-holes communicating with the communicating portion that allows the support shaft material to slide between each other. From the second tool main body formed with a wide upper warped lower jaw portion having a surface shape capable of being attached to the back surface of the upper jaw portion, and having a relatively long upper handle portion from the pivotally attached portion to the rear end side. The first tool main body and the second tool main body have their respective pivoting portions in contact with each other, and the first tool main body warps the upper jaw back Are combined with a cross structure including a state in which the surface of the upper warped mandibular portion of the second tool body can be attached, and the first tool body and the second tool body have a plurality of through holes in each pivot portion. The supporting shaft member is inserted into both of the corresponding selected through holes so that the pivoting position thereof can be freely changed, and the first tool body and the second tool body are made to have a scissor-like structure, and each through hole is inserted. The gap gap between the communicating parts is formed to be smaller than the bore diameter of each through-hole, and the support shaft material has at least the cross section of the part that passes through the through-holes of both tool bodies as the through-hole inner diameter. Any one of the wide shaft sections substantially corresponding to each other and the narrow cross section substantially corresponding to the gap gap of the communication portion on the side substantially orthogonal to the wide cross section portions, and having selected the supporting shaft material. When the wide cross section is positioned in the through-hole and the posture is orthogonal to the communication part, Attaching a hook ring that is pivotally connected to the stop for the head loss of the base end portion, the pivot portion although in any one of the first tool body or the second tool body located on the support shaft member proximal end has been engaged coalescence, characterized in that shall become provided a temporary fixing means for preventing the engaging rotation of the shaft member in restricting piece which projects outward from the pivot portion side Tool for crimping overlapping parts of metal plates.

A wide upward warp in the immediate vicinity of the distal end of the pivoting portion formed with a plurality of through holes that can be inserted through the support shaft and communicated with each other through a communication portion that allows the support shaft material to be slidably movable. A first tool body formed in a lower handle with a relatively long rear end side from the pivotally attached portion, and a support shaft material inserted in an arrangement corresponding to the through hole of the first tool body The first tool main body is warped in the immediate vicinity of the distal end side of the pivoting portion formed with a plurality of through-holes communicating with each other through a communicating portion that enables sliding movement of the support shaft material between them. A second upper tool body formed with a wide upper warped lower jaw portion that has a surface shape that can be attached to the back surface of the upper jaw portion, and a relatively long upper handle portion from the pivotally attached portion to the rear end side; The first tool main body and the second tool main body have their respective pivoting portions in contact with each other, and the first tool main body upper warped upper jaw Combined with a cross structure including a state in which the upper surface of the second tool body upper warped lower jaw part can be attached to the back surface, and in a plurality of through holes of each pivot part of the first tool body and the second tool body The shaft material is inserted into the corresponding through holes corresponding to each other in such a manner that the pivoting position thereof can be freely changed, and the first tool body and the second tool body are made of scissors-like structures. The gap gap of the communication part between the holes is formed smaller than the bore diameter of each through hole, and either one of the first tool main body and the second tool main body or both pivot contact part contact surface side is all through holes. Are formed into a stepped through hole by being dug shallowly into a circular shape including individual through holes for each through hole, while the support shaft member is connected to the head and the loose fitting portion. An insertion member composed of a threaded portion extending linearly from the loose fitting portion, and a threaded portion of the insertion member The insertion member loosely fitting portion has a length sufficient to be loosely fitted in the through hole of either the first tool body or the second tool body, and the cross section of the portion is And a loose cross-sectional portion substantially corresponding to the inner diameter of the through hole and a narrow cross-sectional portion substantially corresponding to the gap gap between the communicating portions on the side substantially orthogonal to the wide cross-sectional portion, and the loose fitting Between the threaded portion having a diameter substantially corresponding to the communicating portion gap gap connected to the portion, the cross-sectional width of the narrow cross-section portion in the loose fitting portion cross section, and the oval shape of the stepped through hole or The length and thickness of the restricting protrusions that fit in the circular digging part are projected from the same wide cross-sectional part in the outer side of the cross section , and the threaded part of the restricting protrusion part nut is threaded. The shaft material is loosely fitted to the previous loose-fitting part by screwing and tightening. A metal plate folded overlapping portion crimping tool characterized by comprising temporary fixing means for temporarily fixing between the first tool body or the second tool body on the non-side.