JP3694486B2

JP3694486B2 - Cutting tool for turning edge

Info

Publication number: JP3694486B2
Application number: JP2002024502A
Authority: JP
Inventors: 明男小野
Original assignee: 株式会社小野建装
Priority date: 2002-01-31
Filing date: 2002-01-31
Publication date: 2005-09-14
Anticipated expiration: 2022-01-31
Also published as: JP2003225891A

Description

【０００１】
【発明の属する技術分野】
本発明は、壁面と天井の見切りに用いられる回り縁を屈曲させるために、回り縁の所定部をＶ字形状に切り落とす回り縁用切断具に関するものである。
【０００２】
【従来の技術】
従来、一般に、建造物の壁面と壁面或いは壁面と天井の仕上げ材の見切りには、意匠性及び外観を向上させるために各種の見切り縁が用いられている。見切り縁として、特に、壁面と天井の見切りに用いられるものとして回り縁がある。通常、回り縁は一直線状に取り付けられるとは限らず、建造物の間取り等に合わせて屈曲させるか、或いは、長尺の２つの回り縁の端部を所定角度で突き合わせ接着剤等を介して接着し取り付けられている。回り縁を建造物の間取り等に合わせて屈曲させる場合は、回り縁の所定部分を鋸、鋏、カッター等の切断工具でＶ字形状に切り落とし屈曲させていた。
【０００３】
図９（ａ）は従来の鋸を用いた回り縁の切断を説明する斜視図であり、図９（ｂ）は切断された回り縁を示す斜視図であり、図９（ｃ）は切断され屈曲された回り縁を示す斜視図である。
図中、１１は断面略コ字形状に形成された一般的な回り縁、Ｘは回り縁１１の底面、Ｙは回り縁１１の上面、Ｚは回り縁１１の下面、Ａは鋸である。
【０００４】
回り縁１１を建造物の間取り等に合わせて屈曲させる場合は、図９（ａ）に示すように、合成樹脂等で形成された断面略コ字形状の回り縁１１の上面Ｙ及び下面Ｚに鋸ＡでＶ字形状の切り込みを入れる。そして、図９（ｂ）、（ｃ）に示すように、切断した上面Ｙ、下面Ｚの各々の切り込みの切断端面同士を突き合わせるようにして所定の角度に回り縁１１を屈曲させる。このとき、上面Ｙ、下面Ｚの各々のＶ字形状の切り込みの頂角の角度を種々に設定することにより、種々の角度で回り縁１１を屈曲させることが可能である。例えば、切り込みの頂角の角度を９０°に設定して切断すれば、回り縁１１を９０°即ち直角に屈曲させることができる。
【０００５】
【発明が解決しようとする課題】
しかしながら上記従来の技術では、以下のような課題を有していた。
（１）鋸、鋏、カッター等の切断工具では、Ｖ字形状の切り込みを入れるために、少なくとも２つの線状の切り込みを入れる必要があり、手間がかかるため省力性及び施工性に欠けるという課題を有していた。
（２）また、回り縁の上面及び下面の所定部分を高い精度で切断するためには、予め切断箇所に線引き等して印を付けておく必要があるため作業性に欠けるという課題を有していた。
（３）更に、Ｖ字形状の切り込みの頂角の角度は、例えば９０°等の所定角度に設定する必要があるが、鋸等の切断工具では、設定した角度で正確に切断することは熟練を要するため、角度の設定の精度に欠けるという課題を有していた。
（４）回り縁の上面や下面の底面側に切り込み残が残っていると、その切り込み残により所定角度に折り曲げることができないという課題を有していた。
【０００６】
本発明は上記従来の課題を解決するもので、容易且つ高精度で回り縁に所定角度の切り込みを入れることができ、回り縁の上面、下面に切り込み残による膨出部等の発生を防ぎ、回り縁を所定の角度に容易且つ見栄えよく屈曲させることができる回り縁用切断具を提供することを目的とする。
【０００７】
【課題を解決するための手段】
上記課題を解決するために本発明の回り縁用切断具は、以下の構成を有している。
【０００８】
本発明の請求項１に記載の回り縁用切断具は、先端側が枢軸により枢着又は回動軸により軸着された一対の柄と、各々の前記柄の先端側に前記枢軸又は前記回動軸を介して延設された一対のあご部と、一方の前記あご部に配設され前記柄の先端側が角となる三角形又はＶ字形に形成された切断部と、他方の前記あご部に前記切断部と向き合って配設され前記切断部と同形の枠状に形成された切断受部と、前記切断受部の先端に前記切断受部の内側縁の頂部と交わる位置に形成され回り縁の底面と当接する回り縁当接面と、前記回り縁当接面の前記切断受部の内側縁の頂部と交わる部分に形成された先端用切り欠きと、前記切断受部の内側縁の頂部の下部側に配設された連結部と、を備えた構成を有している。
【０００９】
この構成により、以下のような作用を有する。
（１）柄の後端側を握ることで柄を操作して枢軸又は回動軸を介してあご部に形成された切断部を切断受部に嵌入させ、切断部の縁部と切断部が嵌入する切断受部の内側縁との剪断により回り縁の上面や下面に所定角度のＶ字形状の切り込みを入れ、その部分を切り落とすことができ、これにより、回り縁を所定の角度で屈曲させることができる。
（２）柄の後端側を握るのみで回り縁の上面や下面の所定部分を切断しＶ字形状の切り込みを入れることができるので、熟練を必要とせず、また、鋸等による煩雑な切断作業を必要とせず省力性、作業性に優れる。
（３）回り縁の上面や下面に所定角度の切り込みを入れることができるので、予め線引き等する必要がなく高い精度で回り縁の上面や下面に所望の角度の切り込みを入れることができ、高い精度で所望の角度に回り縁を屈曲させることができる。
（４）切断受部の先端の回り縁に当接する部分に回り縁当接面が形成されているため、回り縁を切断する際に、回り縁の底面に回り縁当接面を当接させ、回り縁切断具を回り縁の長手方向に対して正確に直角に当接させることができ、高精度で切り込みを形成することができる。
（５）回り縁当接面が切断受部の内側縁の頂部と交わる位置に形成されているので、回り縁の上面や下面の最奥部に切断部の頂部を合わせることができ、切り込みの頂部を回り縁の上面又は下面の最奥部に形成することができ、回り縁を容易に屈曲させることができる。
（６）回り縁の上面や下面を底面との折り曲げ部分で切断することができ、回り縁の上面や下面の底部側に切り込み残が残らないので見栄えよく所定角度に簡単に折り曲げることができる。
（７）先端用切り欠きが設けられていることにより、切断部を切断受部に嵌入させた場合、先端用切り欠きに切断部の頂部が入り込み、回り縁の上面や下面の最奥部に切断部の頂部を合わせることができ、容易に切り込みの頂部を回り縁の上面又は下面の底面側の最奥部に形成することができる。
（８）連結部が切断受部の先端の下部に配設されていることにより、枠状の切断受部の先端が分断されることによる機械的強度の低下を防ぎ、切断受部の先端の変形等を防ぐことができる。
【００１０】
ここで、柄及びそれに延設されているあご部は、一連の鋼材を加工して一体的に形成されることが好ましいが、柄の先端にあご部を溶接等により強固に固着してもよい。
切断部は、柄の先端側が角となる三角形又はＶ字形に形成され、切断受部に嵌入するように形成されている。少なくとも切断部の縁部は、それに対応する切断受部の内側縁に密接して嵌入すればよい。切断部の先端側の角を構成する２辺の縁部は、剪断力を高めるために面取りをせず角型に形成されることが好ましく、また、この先端側の角を構成する２辺の縁部を刃状に形成してもよい。これにより、剪断による切断力を向上させることができる。
切断受部は、切断部が密接に嵌入するように切断部と同形状の凹状又は枠状に形成されている。切断受部の内側縁の上端部を切断部と同様に刃状に形成してもよい。これにより、剪断による切断力を向上させることができる。
なお、一対の柄の後端側に架設して弾性体を設けてもよい。これにより、各々の柄の後端側に設けられた握り部等に外側に向けて弾性力が付加されるため、連続的な操作が可能であり取り扱い性に優れる。ここで、弾性体としては、弦巻ばね、板ばね、ねじりコイルばね等のばね材が用いられる。
なお、回り縁当接面には、切断部の先端と対向して切断部の先端用切り欠きが形成されている。これにより、切断部を切断受部に嵌入させた場合、先端用切り欠きに切断部の先端部が入り込み、回り縁の上面や下面を底面との折り曲げ部分で切断することができる。
【００１１】
請求項２に記載の回り縁用切断具は、請求項１に記載の発明において、前記柄の先端側の前記切断部の前記角が直角である構成を有している。
【００１２】
この構成により、請求項１の作用に加え、以下のような作用を有する。
（１）回り縁の上面や下面に常に９０°の切り込みを入れることができるので、容易に回り縁を直角に屈曲させることができる。
【００１３】
請求項３に記載の回り縁用切断具は、請求項１又は２に記載の発明において、前記切断部と前記切断受部が、前記あご部に脱着自在に配設されている構成を有している。
【００１４】
この構成により、請求項１又は２の作用に加え、以下のような作用を有する。
（１）種々の角度の頂角を有する切断部とそれに対応した切断受部をあご部に脱着させて取り換えて使用することができるので、回り縁の上面や下面に種々の頂角のＶ字形状の切り込みを入れ、出窓等種々の角度を有するものに対応した角度に折り曲げることができる。
【００２２】
【発明の実施の形態】
以下、本発明の一実施の形態について、図を用いて説明する。
（実施の形態１）
図１は本実施の形態１における回り縁用切断具の全体斜視図であり、図２は本実施の形態１における回り縁用切断具の正面図であり、図３は本実施の形態１における回り縁用切断具の背面図であり、図４は本実施の形態１における回り縁用切断具の右側面図であり、図５は本実施の形態１における回り縁用切断具の平面図であり、図６は本実施の形態１における回り縁用切断具の底面図である。
【００２３】
図中、１は本実施の形態１における回り縁用切断具、２ａは上部側柄、２ｂは下部側柄、３は上部側柄２ａ及び下部側柄２ｂの各々の下端側に形成されている握り部、４は枢軸、５ａは下部側柄２ｂの先端側に形成されている上部側あご部、５ｂは上部側柄２ａの先端側に形成されている下部側あご部、６は上部側あご部５ａに固定された切断部、６ａは切断部６の先端側の縁部、７は下部側あご部５ｂに固定された切断受部、７ａは切断受部７の内側縁、８は上部側柄２ａと下部側柄２ｂに架設された弾性体、９は切断受部７の先端に形成された回り縁当接面、９ａは回り縁当接面９に形成された先端用切り欠き、１０は切断受部７の先端の下部に配設された連結部である。
【００２４】
一対の上部側柄２ａ、下部側柄２ｂは、枢軸４で交差し、枢軸４で互いに軸着されている。なお、枢軸４の代わりに回動軸用いて軸着してもよい。
【００２５】
一対の上部側あご部５ａ、下部側あご部５ｂには、その開閉方向の内側に互いに向き合うように切断部６と切断受部７が形成されている。切断部６は、三角形板状に形成され、先端側に角が位置するように上部側あご部５ａに固定されている。本実施の形態１においては、切断部６の先端側の角は９０°に形成されている。これにより、回り縁に９０°のＶ字形状の切り込みを形成することができる。切断部６が切断受部７に嵌入すると、切断部６の先端側の２辺の縁部６ａとそれに対応する切断受部７の内側縁７ａによる剪断により、切断部６と切断受部７との間に挟んだ回り縁の上面や下面を切断して頂角が９０°のＶ字形状に切り落とすことができる。なお、切断部６の縁部６ａの角や切断受部７の内側縁７ａの角は、面取りをせずに鋭く形成されている。これにより、剪断による切断力を向上させることができる。
【００２６】
回り縁当接面９は切断受部７の先端に回り縁の底面の壁面に当接するように形成されている。本実施の形態１においては、回り縁当接面９は回り縁用切断具１の長手方向に直交して形成されている。これにより、回り縁切断具１を回り縁の長手方向に対して正確に直角に当接させることができ、高精度で切り込みを形成することができる。また、回り縁当接面９は切断受部７の内側縁７ａの頂部に交わるように形成され、切断受部７の内側縁７ａの頂部と交わる部分に０．５ｍｍ〜１ｍｍ程度の幅を有する先端用切り欠き９ａが形成されている。先端用切り欠き９ａは、回り縁当接面９が切断受部７の内側縁７ａの頂部に交わるように形成されることで、回り縁当接面９が分断され形成されたものである。先端用切り欠き９ａが設けられていることにより、切断部６を切断受部７に嵌入させた場合、先端用切り欠き９ａに切断部６の頂部が入り込み、回り縁の上面や下面の最奥部に切断部６の頂部を合わせることができ、容易に切り込みの頂部を回り縁の上面又は下面の底面側の最奥部に形成することができる。連結部１０は切断受部７の先端の下部に配設されている。これにより、先端用切り欠き９ａにより分断された切断受部７の先端を補強し、機械的強度を向上させることができる。
【００２７】
以上のように構成された回り縁用切断具について、以下その動作を図を用いて説明する。
図７は本実施の形態１における回り縁用切断具の切断動作を示す説明図であり、図８は本実施の形態１における回り縁用切断具の切断状態を示す説明図である。
【００２８】
図中、１は本実施の形態１における回り縁用切断具、２ａは上部側柄、２ｂは下部側柄、３は握り部、４は回動軸、５ａは上部側あご部、５ｂは下部側あご部、６は切断部、６ａは縁部、７は切断受部、７ａは内側縁、８は弾性体であり、これらは図１において説明したものと同様であるので同一の符号を付けて説明を省略する。１１は断面略コ字形状の回り縁、Ｘは回り縁１１の底面、Ｙは回り縁１１の上面、Ｚは回り縁１１の下面である。
なお、本実施の形態１においては、断面略コ字形状の回り縁１１の上面Ｙを切断する場合について説明する。回り縁１１の下面Ｚを切断する場合は、上面Ｙを切断する場合と同様であるので説明を省略する。
【００２９】
図７に示すように、回り縁１１の上面Ｙを切断部６と切断受部７との間に挟む。このとき、回り縁当接面９を回り縁１１の底面Ｘの内側壁に当接させ、回り縁用切断具１を回り縁１１の長手方向に対して直角に当接させる。続いて、握り部３を握り、上部側柄２ａと下部側柄２ｂを接近させるように操作し、枢軸４を介して切断部６を切断受部７に嵌入させる。図８に示すように、切断部６が切断受部７に嵌入されると、切断部６の縁部６ａと切断受部７の内側縁７ａとの剪断により、回り縁１１の上面Ｙが切断され、上面Ｙに切断部６と同形状で角度が９０°のＶ字形状の切り込みが形成される。同様にして、回り縁１１の下面Ｚを切断し、上面Ｙに形成された切り込みの下部の下面Ｚに、切断部６と同形状で角度が９０°のＶ字形状の切り込みを形成する。
【００３０】
回り縁１１を屈曲させるには、従来の技術で図９（ｂ）、（ｃ）を用いて説明したように、切断した上面Ｙ、下面Ｚの各々の切り込みの切断端面同士を突き合わせるようにして、回り縁１１を９０°屈曲させる。なお、本実施の形態１においては、切断部６の先端側の角の角度を９０°即ち直角としたが、これに限られるものではなく、切断部６を種々の角度の三角形又はＶ字形に形成することもできる。これにより、上面Ｙ、下面Ｚの各々のＶ字形状の切り込みの角度を種々に設定することができ、種々の角度で回り縁１１を屈曲させることが可能である。
【００３１】
以上のように、本実施の形態１における回り縁用切断具１は構成されているので、柄２ａ、２ｂの握り部３を握ることで枢軸４を介してあご部５ａに形成された切断部６をあご部５ｂに形成された切断受部７に嵌入させ、切断部６の縁部６ａとそれに嵌入する切断受部７の内側縁７ａとの剪断により回り縁１１に９０°のＶ字形状の切り込みを入れることができ、これにより、回り縁１１を９０°に屈曲させることができるという作用を有する。
【００３２】
また、切断部６の先端の角が９０°に形成されているので、回り縁１１の上面Ｙや下面Ｚに９０°の切り込みを入れ切り落とすことができ、予め線引き等しなくても高い精度で回り縁１１の上面Ｙや下面Ｚに９０°の切り込みを入れることができるという作用を有する。
【００３３】
また、切断受部７の先端の回り縁１１に当接する部分に回り縁当接面９が形成されているため、回り縁１１を切断する際に、回り縁１１の底面Ｘに回り縁当接面９を当接させ、回り縁切断具１を回り縁１１の長手方向に対して正確に直角に当接させることができ、高精度で切り込みを形成することができるという作用を有する。
【００３４】
また、回り縁当接面９が、切断受部７の内側縁７ａの頂部と交わる位置に形成され切断部６の頂部が入り込む先端用切り欠き９ａが形成されているので、回り縁１１の上面Ｙや下面Ｚに切り込み残が残らず見栄えよく簡単に折り曲げることができるという作用を有する。
【００３５】
【発明の効果】
以上説明したように本発明の回り縁用切断具によれば、以下のような有利な効果が得られる。
【００３６】
請求項１に記載の発明によれば、
（１）柄の後端側を握ることで柄を操作して枢軸又は回動軸を介してあご部に形成された切断部を切断受部に嵌入させ、切断部の縁部と切断部が嵌入する切断受部の内側縁との剪断により回り縁の上面や下面に所定角度のＶ字形状の切り込みを入れ、その部分を切り落とすことができ、これにより、回り縁を所定の角度で屈曲させることができる回り縁用切断具を提供することができる。
（２）柄の後端側を握るのみで回り縁の上面や下面の所定部分を切断しＶ字形状の切り込みを入れることができるので、熟練を必要とせず、また、鋸等による煩雑な切断作業を必要とせず省力性、作業性に優れる回り縁用切断具を提供することができる。
（３）回り縁の上面や下面に所定角度の切り込みを入れることができるので、予め線引き等する必要がなく高い精度で回り縁の上面や下面に所望の角度の切り込みを入れることができ、高い精度で所望の角度に回り縁を屈曲させることができる回り縁用切断具を提供することができる。
（４）切断受部の先端の回り縁に当接する部分に回り縁当接面が形成されているため、回り縁を切断する際に、回り縁の底面に回り縁当接面を当接させ、回り縁切断具を回り縁の長手方向に対して正確に直角に当接させることができ、高精度で切り込みを形成することができる回り縁用切断具を提供することができる。
（５）回り縁当接面が切断受部の内側縁の頂部と交わる位置に形成されているので、回り縁の上面や下面の最奥部に切断部の頂部を合わせることができ、切り込みの頂部を回り縁の上面又は下面の最奥部に形成することができ、回り縁を容易に屈曲させることができ回り縁用切断具を提供することができる。
（６）回り縁の上面や下面の底部側に切り込み残が残らないので見栄えよく所定角度に簡単に折り曲げることができる回り縁用切断具を提供することができる。
（７）先端用切り欠きが設けられていることにより、切断部を切断受部に嵌入させた場合、先端用切り欠きに切断部の頂部が入り込み、回り縁の上面や下面の最奥部に切断部の頂部を合わせることができ、容易に切り込みの頂部を回り縁の上面又は下面の底面側の最奥部に形成することができる。
（８）連結部が切断受部の先端の下部に配設されていることにより、枠状の切断受部の先端が分断されることによる機械的強度の低下を防ぎ、切断受部の先端の変形等を防ぐことができる回り縁用切断具を提供することができる。
【００３７】
請求項２に記載の発明によれば、請求項１の効果に加え、
（１）回り縁の上面や下面に常に９０°の切り込みを入れることができるので、容易に回り縁を直角に屈曲させることができる回り縁用切断具を提供することができる。
【００３８】
請求項３に記載の発明によれば、請求項１又は２の効果に加え、
（１）種々の角度の頂角を有する切断部とそれに対応した切断受部をあご部に脱着させて取り換えて使用することができるので、回り縁の上面や下面に種々の頂角のＶ字形状の切り込みを入れ、出窓等種々の角度を有するものに対応した角度に折り曲げることができる回り縁用切断具を提供することができる。
【図面の簡単な説明】
【図１】実施の形態１における回り縁用切断具の全体斜視図
【図２】実施の形態１における回り縁用切断具の正面図
【図３】実施の形態１における回り縁用切断具の背面図
【図４】実施の形態１における回り縁用切断具の右側面図
【図５】実施の形態１における回り縁用切断具の平面図
【図６】実施の形態１における回り縁用切断具の底面図
【図７】実施の形態１における回り縁用切断具の切断動作を示す説明図
【図８】実施の形態１における回り縁用切断具の切断状態を示す説明図
【図９】（ａ）従来の鋸を用いた回り縁の切断を説明する斜視図
（ｂ）切断された回り縁を示す斜視図
（ｃ）切断され屈曲された回り縁を示す斜視図
【符号の説明】
１回り縁用切断具
２ａ上部側柄
２ｂ下部側柄
３握り部
４回動軸
５ａ上部側あご部
５ｂ下部側あご部
６切断部
６ａ縁部
７切断受部
７ａ内側縁
８弾性体
９回り縁当接面
９ａ先端用切り欠き
１０連結部
１１回り縁
Ｘ底面
Ｙ上面
Ｚ下面
Ａ鋸[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cutting tool for a peripheral edge that cuts a predetermined portion of the peripheral edge into a V shape in order to bend the peripheral edge used for parting the wall surface and the ceiling.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, various parting edges are generally used for parting a wall surface and a wall surface of a building or a finishing material for a wall surface and a ceiling in order to improve design and appearance. As a parting edge, in particular, there is a peripheral edge as one used for parting a wall surface and a ceiling. Usually, the peripheral edge is not necessarily attached in a straight line, but it is bent according to the floor plan of the building, or the ends of the two long peripheral edges are bonded at a predetermined angle through an adhesive or the like. It is attached. When the peripheral edge is bent in accordance with the floor plan of the building, a predetermined portion of the peripheral edge is cut into a V shape with a cutting tool such as a saw, a scissors, or a cutter and bent.
[0003]
FIG. 9A is a perspective view for explaining cutting of the peripheral edge using a conventional saw, FIG. 9B is a perspective view showing the cut peripheral edge, and FIG. 9C is cut and bent. It is a perspective view which shows the surrounding edge.
In the figure, 11 is a general peripheral edge formed in a substantially U-shaped cross section, X is a bottom surface of the peripheral edge 11, Y is an upper surface of the peripheral edge 11, Z is a lower surface of the peripheral edge 11, and A is a saw.
[0004]
When the peripheral edge 11 is bent in accordance with the floor plan of the building, as shown in FIG. 9A, a saw A is formed on the upper surface Y and the lower surface Z of the peripheral edge 11 having a substantially U-shaped cross section formed of synthetic resin or the like. Make a V-shaped cut with. Then, as shown in FIGS. 9B and 9C, the peripheral edge 11 is bent at a predetermined angle so that the cut end faces of the cut upper surface Y and lower surface Z are brought into contact with each other. At this time, by setting various apex angles of the V-shaped cuts on the upper surface Y and the lower surface Z, the peripheral edge 11 can be bent at various angles. For example, if the apex angle of the cut is set to 90 ° and cut, the peripheral edge 11 can be bent 90 °, that is, a right angle.
[0005]
[Problems to be solved by the invention]
However, the above conventional techniques have the following problems.
(1) With cutting tools such as saws, scissors, and cutters, it is necessary to make at least two linear cuts in order to make V-shaped cuts. Had.
(2) In addition, in order to cut a predetermined portion of the upper surface and the lower surface of the peripheral edge with high accuracy, it is necessary to mark the cutting portion by drawing in advance, so that there is a problem of lack of workability. It was.
(3) Further, the apex angle of the V-shaped cut needs to be set to a predetermined angle such as 90 °, for example. With a cutting tool such as a saw, it is skilled to cut accurately at the set angle. Therefore, there is a problem that the angle setting accuracy is insufficient.
(4) If a cut residue remains on the upper surface of the peripheral edge or the bottom surface side of the lower surface, there is a problem in that it cannot be bent to a predetermined angle due to the cut residue.
[0006]
The present invention solves the above-described conventional problems, and can easily and accurately make a cut at a predetermined angle in the peripheral edge, prevent the upper edge and the lower face of the peripheral edge from generating a bulging portion, and the like. An object of the present invention is to provide a cutting tool for a peripheral edge that can be bent easily and visually at a predetermined angle.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the peripheral edge cutting tool of the present invention has the following configuration.
[0008]
The cutting tool for a peripheral edge according to claim 1 of the present invention includes a pair of handles whose tip sides are pivotally attached by pivots or pivoted by pivot shafts, and the pivots or pivot shafts at the tip sides of the respective handles. A pair of jaws extending through the wire, a cutting part disposed in one of the jaws and formed in a triangle or V-shape with the tip end of the handle being a corner, and the cutting in the other jaw part A cutting receiving portion which is disposed facing the portion and is formed in a frame shape having the same shape as the cutting portion, and a bottom surface of a peripheral edge formed at a position intersecting with the top of the inner edge of the cutting receiving portion at the tip of the cutting receiving portion A circumferential edge abutting surface that abuts, a notch for a tip formed at a portion of the circumferential edge abutting surface that intersects the top of the inner edge of the cutting receiving portion, and a lower side of the top of the inner edge of the cutting receiving portion. And a connecting portion provided.
[0009]
This configuration has the following effects.
(1) The handle is operated by gripping the rear end side of the handle, and the cutting part formed in the jaw part via the pivot or the rotating shaft is inserted into the cutting receiving part. It is possible to make a V-shaped cut at a predetermined angle on the upper surface and the lower surface of the peripheral edge by shearing with the inner edge of the cutting receiving portion to be inserted, and to cut off the portion, thereby bending the peripheral edge at a predetermined angle. it can.
(2) By simply grasping the rear end side of the handle, it is possible to cut a predetermined part of the upper and lower edges of the peripheral edge and make a V-shaped cut, so that no skill is required, and complicated cutting work using a saw or the like Excellent labor saving and workability.
(3) Since it is possible to make a cut at a predetermined angle on the upper and lower surfaces of the peripheral edge, it is not necessary to draw in advance, so that a desired angle can be cut on the upper and lower surfaces of the peripheral edge with high accuracy. The peripheral edge can be bent to a desired angle.
(4) Since the peripheral edge abutment surface is formed in the portion that abuts the peripheral edge at the tip of the cutting receiving portion, when the peripheral edge is cut, the peripheral edge abutment surface is brought into contact with the bottom surface of the peripheral edge to It is possible to abut at a right angle with respect to the longitudinal direction of the peripheral edge, and it is possible to form a cut with high accuracy.
(5) Since the peripheral edge abutment surface is formed at a position where it intersects the top of the inner edge of the cutting receiving portion, the top of the cutting portion can be aligned with the innermost portion of the upper and lower surfaces of the peripheral edge, and the top of the notch It can be formed at the innermost part of the upper surface or the lower surface of the peripheral edge, and the peripheral edge can be easily bent.
(6) The upper surface and the lower surface of the peripheral edge can be cut at the bent portion with the bottom surface, and no cutting residue remains on the bottom side of the upper surface and the lower surface of the peripheral edge, so that it can be easily bent at a predetermined angle.
(7) When the cutting notch for the tip is provided, when the cutting part is inserted into the cutting receiving part, the top of the cutting part enters the notch for the tip and cuts into the uppermost part of the peripheral edge and the innermost part of the lower surface. The tops of the parts can be aligned, and the tops of the cuts can be easily formed in the deepest part on the bottom surface side of the upper surface or the lower surface of the peripheral edge.
(8) Since the connecting portion is disposed below the tip of the cutting receiving portion, the mechanical strength is prevented from being lowered due to the cutting of the tip of the frame-shaped cutting receiving portion. Deformation and the like can be prevented.
[0010]
Here, the handle and the jaw portion extending to the handle are preferably formed integrally by processing a series of steel materials, but the jaw portion may be firmly fixed to the tip of the handle by welding or the like. .
The cutting part is formed in a triangle or V shape having a corner on the tip side of the handle, and is formed so as to be fitted into the cutting receiving part. It is sufficient that at least the edge portion of the cutting portion is closely fitted to the inner edge of the corresponding cutting receiving portion. The edges of the two sides constituting the corner on the tip side of the cutting part are preferably formed into a square shape without chamfering in order to increase the shearing force, and the two sides constituting the corner on the tip side are preferably formed. The edge may be formed in a blade shape. Thereby, the cutting force by shearing can be improved.
The cutting receiving portion is formed in a concave shape or a frame shape having the same shape as the cutting portion so that the cutting portion is closely fitted. You may form the upper end part of the inner edge of a cutting receiving part in a blade shape similarly to a cutting part. Thereby, the cutting force by shearing can be improved.
Note that an elastic body may be provided on the rear end side of the pair of handles. As a result, an elastic force is applied outwardly to the grips provided on the rear end side of each handle, so that a continuous operation is possible and excellent handleability is achieved. Here, a spring material such as a string spring, a leaf spring, or a torsion coil spring is used as the elastic body.
In addition, the notch for the front-end | tip of a cutting part is formed in the surrounding edge contact surface facing the front-end | tip of a cutting part. Thereby, when the cutting part is fitted in the cutting receiving part, the tip part of the cutting part enters the notch for the tip, and the upper surface and the lower surface of the peripheral edge can be cut at the bent portion with the bottom surface.
[0011]
According to a second aspect of the present invention, there is provided a cutting tool for a peripheral edge according to the first aspect of the present invention, wherein the angle of the cutting portion on the distal end side of the handle is a right angle.
[0012]
With this configuration, in addition to the operation of the first aspect, the following operation is provided.
(1) Since a 90 ° cut can always be made on the upper and lower surfaces of the peripheral edge, the peripheral edge can be easily bent at a right angle.
[0013]
According to a third aspect of the present invention, there is provided a cutting tool for a peripheral edge according to the first or second aspect, wherein the cutting portion and the cutting receiving portion are detachably disposed on the jaw portion. Yes.
[0014]
With this configuration, in addition to the operation of the first or second aspect, the following operation is provided.
(1) Since the cutting part having various apex angles and the corresponding cutting receiving part can be attached to and removed from the jaw part, they can be used on the upper and lower surfaces of the peripheral edge. And can be bent to an angle corresponding to those having various angles such as a bay window.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIG. 1 is an overall perspective view of the cutting tool for the peripheral edge in the first embodiment, FIG. 2 is a front view of the cutting tool for the peripheral edge in the first embodiment, and FIG. 3 is for the peripheral edge in the first embodiment. 4 is a rear view of the cutting tool, FIG. 4 is a right side view of the cutting tool for the peripheral edge in the first embodiment, FIG. 5 is a plan view of the cutting tool for the peripheral edge in the first embodiment, and FIG. It is a bottom view of the cutting tool for surrounding edges in this Embodiment 1.
[0023]
In the figure, 1 is a cutting tool for a peripheral edge in the first embodiment, 2a is an upper handle, 2b is a lower handle, 3 is a grip formed on the lower end side of each of the upper handle 2a and the lower handle 2b. , 4 is a pivot, 5a is an upper jaw portion formed on the tip side of the lower handle 2b, 5b is a lower jaw portion formed on the tip side of the upper handle 2a, and 6 is an upper jaw portion. The cutting part fixed to 5a, 6a is the edge part of the front end side of the cutting part 6, 7 is the cutting receiving part fixed to the lower side jaw part 5b, 7a is the inner edge of the cutting receiving part 7, and 8 is the upper side handle 2a and an elastic body laid on the lower side handle 2b, 9 is a peripheral edge contact surface formed at the front end of the cutting receiving portion 7, 9a is a notch for front end formed on the peripheral edge contact surface 9, and 10 is a cutting receiving member. This is a connecting part disposed at the lower part of the tip of the part 7.
[0024]
The pair of upper side handle 2 a and lower side handle 2 b intersect at the pivot 4 and are pivotally attached to each other at the pivot 4. The pivot shaft 4 may be used in place of the pivot shaft 4.
[0025]
A cutting portion 6 and a cutting receiving portion 7 are formed on the pair of upper side jaw portion 5a and lower side jaw portion 5b so as to face each other inside the opening / closing direction. The cutting part 6 is formed in a triangular plate shape, and is fixed to the upper side jaw part 5a so that a corner is located on the tip side. In the first embodiment, the angle on the distal end side of the cutting portion 6 is formed at 90 °. As a result, a 90 ° V-shaped cut can be formed at the peripheral edge. When the cutting part 6 is fitted into the cutting receiving part 7, the cutting part 6 and the cutting receiving part 7 are sheared by the two edge parts 6a on the distal end side of the cutting part 6 and the corresponding inner edge 7a of the cutting receiving part 7. The upper surface and the lower surface of the peripheral edge sandwiched between them can be cut and cut into a V shape with an apex angle of 90 °. The corners of the edge 6a of the cutting part 6 and the corners of the inner edge 7a of the cutting receiving part 7 are formed sharply without chamfering. Thereby, the cutting force by shearing can be improved.
[0026]
The peripheral edge contact surface 9 is formed at the tip of the cutting receiving portion 7 so as to contact the wall surface of the bottom surface of the peripheral edge. In the first embodiment, the peripheral edge contact surface 9 is formed orthogonal to the longitudinal direction of the peripheral edge cutting tool 1. Thereby, the surrounding edge cutting tool 1 can be contact | abutted correctly at right angles with respect to the longitudinal direction of a surrounding edge, and a notch can be formed with high precision. Further, the peripheral edge abutting surface 9 is formed so as to intersect with the top of the inner edge 7a of the cutting receiving portion 7, and a tip having a width of about 0.5 mm to 1 mm at a portion intersecting with the top of the inner edge 7a of the cutting receiving portion 7 A notch 9a is formed. The notch 9a for the tip is formed by dividing the peripheral edge contact surface 9 by forming the peripheral edge contact surface 9 so as to intersect with the top of the inner edge 7a of the cutting receiving portion 7. By providing the notch 9a for the tip, when the cutting part 6 is fitted into the cutting receiving part 7, the top of the cutting part 6 enters the notch 9a for the tip, and the uppermost part of the upper and lower surfaces of the peripheral edge The top of the cut portion 6 can be aligned with the top, and the top of the cut can be easily formed in the innermost portion on the bottom surface side of the upper surface or the lower surface of the peripheral edge. The connecting portion 10 is disposed at the lower part of the tip of the cutting receiving portion 7. Thereby, the front-end | tip of the cutting receiving part 7 parted by the notch 9a for front-end | tips can be reinforced, and mechanical strength can be improved.
[0027]
The operation of the peripheral edge cutting tool configured as described above will be described below with reference to the drawings.
FIG. 7 is an explanatory diagram showing a cutting operation of the peripheral edge cutting tool in the first embodiment, and FIG. 8 is an explanatory diagram showing a cutting state of the peripheral edge cutting tool in the first embodiment.
[0028]
In the figure, 1 is a cutting tool for a peripheral edge in the first embodiment, 2a is an upper handle, 2b is a lower handle, 3 is a gripping part, 4 is a rotating shaft, 5a is an upper jaw part, and 5b is a lower part. The jaw part, 6 is a cutting part, 6a is an edge part, 7 is a cutting receiving part, 7a is an inner edge, and 8 is an elastic body. These are the same as those described in FIG. Description is omitted. 11 is a circumferential edge having a substantially U-shaped cross section, X is a bottom surface of the circumferential edge 11, Y is an upper surface of the circumferential edge 11, and Z is a lower surface of the circumferential edge 11.
In the first embodiment, a case where the upper surface Y of the peripheral edge 11 having a substantially U-shaped cross section is cut will be described. The case where the lower surface Z of the peripheral edge 11 is cut is the same as the case where the upper surface Y is cut, and the description thereof will be omitted.
[0029]
As shown in FIG. 7, the upper surface Y of the peripheral edge 11 is sandwiched between the cutting part 6 and the cutting receiving part 7. At this time, the peripheral edge contact surface 9 is brought into contact with the inner wall of the bottom surface X of the peripheral edge 11, and the peripheral edge cutting tool 1 is brought into contact with the longitudinal direction of the peripheral edge 11 at a right angle. Subsequently, the grip portion 3 is gripped, and the upper side handle 2 a and the lower side handle 2 b are operated to approach each other, and the cutting portion 6 is inserted into the cutting receiving portion 7 via the pivot 4. As shown in FIG. 8, when the cutting part 6 is inserted into the cutting receiving part 7, the upper surface Y of the peripheral edge 11 is cut by shearing between the edge 6 a of the cutting part 6 and the inner edge 7 a of the cutting receiving part 7. A V-shaped cut having the same shape as the cut portion 6 and an angle of 90 ° is formed on the upper surface Y. Similarly, the lower surface Z of the peripheral edge 11 is cut, and a V-shaped cut having the same shape as the cutting portion 6 and an angle of 90 ° is formed on the lower surface Z of the lower portion of the cut formed on the upper surface Y.
[0030]
In order to bend the peripheral edge 11, the cut end surfaces of the cuts of the cut upper surface Y and lower surface Z are brought into contact with each other as described with reference to FIGS. 9B and 9C in the prior art. Then, the peripheral edge 11 is bent by 90 °. In the first embodiment, the angle of the angle on the distal end side of the cutting part 6 is 90 °, that is, a right angle, but the present invention is not limited to this, and the cutting part 6 is formed into triangles or V-shaped at various angles. It can also be formed. Thereby, the angle of the V-shaped cutting of each of the upper surface Y and the lower surface Z can be set variously, and the peripheral edge 11 can be bent at various angles.
[0031]
As described above, since the peripheral edge cutting tool 1 according to the first embodiment is configured, the cutting part 6 formed in the jaw part 5a via the pivot 4 by grasping the grip part 3 of the handles 2a, 2b. Is inserted into the cutting receiving portion 7 formed on the jaw portion 5b, and a 90 ° V-shaped cut is made in the peripheral edge 11 by shearing between the edge portion 6a of the cutting portion 6 and the inner edge 7a of the cutting receiving portion 7 fitted therein. Thus, the peripheral edge 11 can be bent at 90 °.
[0032]
Further, since the angle of the tip of the cutting portion 6 is formed at 90 °, it is possible to cut and cut off 90 ° on the upper surface Y and the lower surface Z of the peripheral edge 11, and the peripheral edge with high accuracy without drawing in advance. The upper surface Y and the lower surface Z of 11 can be cut by 90 °.
[0033]
In addition, since the peripheral edge contact surface 9 is formed at the portion of the cutting receiving portion 7 that contacts the peripheral edge 11, the peripheral edge contact surface 9 contacts the bottom surface X of the peripheral edge 11 when the peripheral edge 11 is cut. Thus, the peripheral edge cutting tool 1 can be brought into contact with the longitudinal direction of the peripheral edge 11 exactly at right angles, so that the cut can be formed with high accuracy.
[0034]
Further, since the peripheral edge contact surface 9 is formed at a position where it intersects the top of the inner edge 7a of the cutting receiving portion 7 and the top notch 9a into which the top of the cutting portion 6 enters is formed, the upper surface Y of the peripheral edge 11 or There is an effect that the bottom surface Z can be easily folded with a good appearance without leaving any cut residue.
[0035]
【The invention's effect】
As described above, according to the peripheral edge cutting tool of the present invention, the following advantageous effects can be obtained.
[0036]
According to the invention of claim 1,
(1) The handle is operated by gripping the rear end side of the handle, and the cutting part formed in the jaw part via the pivot or the rotating shaft is inserted into the cutting receiving part. It is possible to make a V-shaped cut at a predetermined angle on the upper surface and the lower surface of the peripheral edge by shearing with the inner edge of the cutting receiving portion to be inserted, and to cut off the portion, thereby bending the peripheral edge at a predetermined angle. A cutting tool for a peripheral edge can be provided.
(2) By simply grasping the rear end side of the handle, it is possible to cut a predetermined part of the upper and lower edges of the peripheral edge and make a V-shaped cut, so that no skill is required, and complicated cutting work using a saw or the like Therefore, it is possible to provide a cutting tool for a peripheral edge which is excellent in labor saving and workability.
(3) Since it is possible to make a cut at a predetermined angle on the upper and lower surfaces of the peripheral edge, it is not necessary to draw in advance, so that a desired angle can be cut on the upper and lower surfaces of the peripheral edge with high accuracy. It is possible to provide a peripheral edge cutting tool capable of bending the peripheral edge to a desired angle.
(4) Since the peripheral edge abutment surface is formed in the portion that abuts the peripheral edge at the tip of the cutting receiving portion, when the peripheral edge is cut, the peripheral edge abutment surface is brought into contact with the bottom surface of the peripheral edge to It is possible to provide a cutting tool for a peripheral edge that can be brought into contact with the longitudinal direction of the peripheral edge exactly at a right angle and can form a cut with high accuracy.
(5) Since the peripheral edge abutment surface is formed at a position where it intersects the top of the inner edge of the cutting receiving portion, the top of the cutting portion can be aligned with the innermost portion of the upper and lower surfaces of the peripheral edge, and the top of the notch It can be formed at the innermost part of the upper surface or the lower surface of the peripheral edge, the peripheral edge can be easily bent, and a peripheral edge cutting tool can be provided.
(6) Since there remains no cut residue on the upper surface or the bottom surface of the lower edge, it is possible to provide a cutting tool for the peripheral edge that can be easily bent at a predetermined angle.
(7) When the cutting notch for the tip is provided, when the cutting part is inserted into the cutting receiving part, the top of the cutting part enters the notch for the tip and cuts into the uppermost part of the peripheral edge and the innermost part of the lower surface. The tops of the parts can be aligned, and the tops of the cuts can be easily formed in the deepest part on the bottom surface side of the upper surface or the lower surface of the peripheral edge.
(8) Since the connecting portion is disposed below the tip of the cutting receiving portion, the mechanical strength is prevented from being lowered due to the cutting of the tip of the frame-shaped cutting receiving portion. It is possible to provide a peripheral edge cutting tool capable of preventing deformation and the like.
[0037]
According to invention of Claim 2, in addition to the effect of Claim 1,
(1) Since a 90 ° cut can always be made on the upper surface and the lower surface of the peripheral edge, it is possible to provide a peripheral edge cutting tool that can easily bend the peripheral edge at a right angle.
[0038]
According to invention of Claim 3, in addition to the effect of Claim 1 or 2,
(1) Since the cutting part having various apex angles and the corresponding cutting receiving part can be attached to and removed from the jaw part, they can be used on the upper and lower surfaces of the peripheral edge. Accordingly, it is possible to provide a cutting tool for a peripheral edge that can be bent at an angle corresponding to an angle having various angles such as a bay window.
[Brief description of the drawings]
1 is an overall perspective view of a cutting tool for a peripheral edge in Embodiment 1. FIG. 2 is a front view of the cutting tool for a peripheral edge in Embodiment 1. FIG. 3 is a rear view of the cutting tool for a peripheral edge in Embodiment 1. FIG. 4 is a right side view of the cutting tool for the peripheral edge in the first embodiment. FIG. 5 is a plan view of the cutting tool for the peripheral edge in the first embodiment. 7 is an explanatory view showing the cutting operation of the peripheral edge cutting tool in the first embodiment. FIG. 8 is an explanatory view showing the cutting state of the peripheral edge cutting tool in the first embodiment. FIG. 9 (a) is a conventional saw. (B) A perspective view showing a cut peripheral edge (c) A perspective view showing a cut and bent peripheral edge
DESCRIPTION OF SYMBOLS 1 Cutting tool 2a for upper edge side Upper handle 2b Lower side handle 3 Grip part 4 Rotating shaft 5a Upper side jaw part 5b Lower side jaw part 6 Cutting part 6a Edge part 7 Cutting receiving part 7a Inner edge 8 Elastic body 9 Around edge contact Surface 9a Notch 10 for tip 10 Connecting portion 11 Circumference edge X Bottom surface Y Top surface Z Bottom surface A Saw

Claims

A pair of handles whose front ends are pivotally attached by pivots or pivotally attached by pivots;
A pair of jaws extending on the tip side of each handle via the pivot or the pivot;
A cutting portion disposed in one of the jaws and formed in a triangle or V shape with the tip side of the handle being a corner;
A cutting receiving portion disposed on the other jaw portion so as to face the cutting portion and formed in the same shape as the cutting portion;
A peripheral edge contact surface that is formed at a position intersecting with the top of the inner edge of the cutting receiving portion at the tip of the cutting receiving portion, and that contacts the bottom surface of the peripheral edge;
A notch for a tip formed at a portion intersecting with the top of the inner edge of the cutting receiving portion of the peripheral edge contact surface;
A connecting portion disposed on the lower side of the top of the inner edge of the cutting receiving portion;
A cutting tool for a peripheral edge, characterized by comprising:

The cutting tool for a peripheral edge according to claim 1, wherein the corner of the cutting portion on the tip side of the handle is a right angle.

The peripheral cutting tool according to claim 1 or 2, wherein the cutting part and the cutting receiving part are detachably disposed on the jaw part.