【０００１】
【産業上の利用分野】
本発明は紙クリップ、特に弾性線条材を折り曲げて互いに連続する少なくとも二つの部分を形成し、これら二つの部分がそれぞれ形成する二つの平面をこれらに直交する方向に離間させたときに生じる弾性復帰力を利用して二つの部分間に複数枚の紙を弾性的に挟持するクリップに関する。更に、本発明の紙クリップは比較的多数枚の紙をそろえて保持する場合や、コーナー部をホチキス等で綴じた複数の書類を同じコーナー部で束ねて保持する場合等に用いて特に有用である。
【０００２】
【従来の技術】
従来の紙クリップには大別して三種類があり、その第一の種類は金属線条材を３か所で順次ほぼ半円形に折り曲げ、同一平面内で内外に接する二つの細長いＵ字形脚部の各一端を２回目の折り曲げでできる半円形の部分で連続させて形成したもので、これらの同一平面内で接する内外両脚部は、それらの平面に直交する方向に相互に離間させた時に連続部分の捩じれで生じる復帰バネ力によって両脚部間に紙を挟み持つことになる。この種の紙クリップは弾性連続部分が小さい半円形であるため、２、３枚から１０〜２０枚程度の比較的少ない枚数の紙を束ねて保持するに適し、概ね小型から中型までの範囲の寸法に形成される。
【０００３】
第二の種類は、上記第一の種類の紙クリップの応用形態として両脚部間の連続部分を直線状にすることにより或る長さを持たせ、紙保持容量を増やす事を計ったものである。この場合も直線状連続部分の長さをあまり大きくする事はなく、上記の小形と中形の中間程度の大きさで使用される。
【０００４】
第三の種類の紙クリップは、或る長さを持った直線状の中央連続部の両端からその同じ側に鋭角に、互いに交差してＸ字状に重なるように線条材を折り曲げて一対の脚部とし、次いでこの第一の折り曲げ点から等距離の第二の折り曲げ点で再び鋭角に、それぞれ他方の脚部の第一の折り曲げ点に向けて折り曲げ、この第一の折り曲げ点から等距離手前の第三の折り曲げ点で両脚部を鈍角に、それぞれの第一の折り曲げ点に向けて折り曲げ、第一の折り曲げ点に近接して終端させて形成される。したがって両脚部は中央接続部の両端から互いに接近する方向に延長し、交差して重なり合う一対のほぼ三角形に形成され、これら三角形の両脚部が区画する二つの面を互いに離間させた時に中央連続部の捩じれで生じる復帰バネ力を利用して両脚部間に紙を挟み持つ。この場合束ねた紙の縁の厚さ方向を斜めに横切る中央連続部が比較的に長いため、この種の言わばＸ字状の紙クリップは上述の物よりも多数枚の紙を保持するに適し、中型から大型の寸法に形成して使用される。
【０００５】
【発明が解決しようとする課題】
上記のいずれの従来の紙クリップにおいても、ほぼＵ字形または三角形の両脚部の長さとそれらの間の半円形または直線状の連続部分の長さとが紙クリップの紙保持容量を決定する。第一の種類の半円形の連続部分の場合には、両脚部を細長いＵ字形としているため、両脚部の連続部の長さは脚部の長さに比して小さなその幅の寸法に限定される。従って連続部の長さを増すには脚部を長大にしなければならない。一方半円形の連続部はその寸法の大小にかかわりなく挟み持つ紙束を半円形の中央に集中させることとなり、紙束が薄ければクリップによって紙の保持部分が波型に変形される。また、紙束が比較的に厚ければ紙束の上面と下面とにそれぞれ接合する両脚部間の連続部はその幅が狭いために紙束の両面間の縁部に沿って直角に近い位置になり、それによって両脚部に与えられる線条材の捩じれがほぼ最大となり、両脚部の自由端側は紙面に対して平らに押しつけられるが連続部に連なる側は捩じれて部分的に浮き上がってしまう。このような紙束は単独でも、また多数を積重ねた場合でも紙束の平坦性を失う。
【０００６】
第二の種類のように連続部分を直線状にした場合も、上述のようにその長さには限度があるため、適切な枚数の紙に対してはこの接続部分は紙束の縁に沿って両面間をほぼ斜めに横切ることになるため、線条材の捩じれは上記よりも比較的に弱くなるが、紙束が厚くなれば連続部分は紙の両面に対し直角に近くなり、上記と同様な両脚部の部分的な浮上がりも避けられない。
【０００７】
第三の種類のほぼ三角形とした互いに交差する両脚部を有する紙クリップの場合には、直線状の連続部分がかなり長いため、かなりの枚数の紙束に用いても紙束の縁において紙の両面間を斜交する状態が保たれ、復帰バネ力も過大とならずに適度に保たれる。一方、この紙クリップはかなり厚い紙束にも用い得るが、ある程度以上の厚さになると復帰バネ力が過大となり、各脚部の一部が浮き上がって平坦性を失うばかりでなく、脚部の紙面との摩擦が減じられて紙クリップ全体が滑り、クリップ位置から外れてしまう。また、通常は重なって圧接している両脚部を離間させて置く使用状態を長時間続ければ両脚部は変形して復帰バネ力を減じ、離間したままとなってもはや使用不能となる。これを原状に復するには、両脚部が上記第一の種類のように同一平面内にないため、Ｘ字状の交差位置から逆Ｕ字状のように両脚部を一旦横に拡げて交差関係を解き、この位置で各脚部を連続部分について交差位置における圧接方向に捩じり込んだうえ、再び元のＸ字状の交差位置に戻すと言う繁雑な手作業が必要である。
【０００８】
また、上記の第一の種類から第三の種類までの従来の紙クリップに共通する課題として、特に紙束のコーナー部分に使用するに適した紙クリップがない点が挙げられる。左横書きの書類の場合、紙クリップは通常紙束の上部左角近くで用いるが、この様にクリップした書類の２枚目以降の上部左角近くの記載を支障なく見るには、紙クリップはできる限り左角近くに位置することが求められる。一方クリップする紙束が上部左角をホチキスで綴じた複数の書類を含む場合、紙クリップはホチキス位置を避けて使用しなければならず、望ましい状態は得られないのが現状であり、特に紙束の角部に有効に用い得るものは皆無である。
【０００９】
本発明はこれらの問題を解決して、２、３枚の少ない枚数から２０〜３０枚或いはさらに多くの枚数の紙束について使用できる、つまり従来の小形、中形そして大形の全ての寸法において支障なく使用可能な紙クリップを提供することを目的とする。
【００１０】
本発明は更に、比較的に多い枚数の紙に使用しても紙面に対する平坦性を保って常に安定した使用効果が得られる紙クリップを提供することを目的とする。
【００１１】
本発明は更に、紙の両面のそれぞれに面する各部分とそれら連続する部分が交差したり重なったりする事なく、いずれも同一の平面内で形成されて、多数枚の紙に使用して変形した場合の復元も各部分を同一平面に戻すのみの簡単な手作業ですむ紙クリップを提供することを目的とする。
【００１２】
本発明が更に目的とするところは特に紙束の角部に使用して有用な紙クリップの提供にある。
【００１３】
【課題を解決するための手段】
本発明によれば上記の課題は、一個分の線条材の長さ方向中心で直交する軸線について対称に折り曲げられて第一平面を形成する中央部と、それぞれ中央部両端から延長する線条材を中央部の第一平面と同一の平面内において順次軸線について対称に折り曲げられて中央部の両端から一旦両側方向に離間して延長する第一辺部分ならびに中央部の中心部分に再び接近する第二辺部分を介して各々中央部に沿って伸びる第三辺部分で終端すると共にそれぞれ第一平面と同一の平面内に伸びて一対の第二平面を形成する一対の側腕部とを備え、使用時にはクリップする紙束の一面上に中央部が位置し、一対の側腕部の第一辺部分は紙束の側縁に沿って紙束の一面から他面まで斜交して伸び、第二、第三辺部分は第二平面を第一平面から平行に離間して維持して紙束の他面上に位置する線条材製の紙クリップによって解決される。
【００１４】
【実施例１】
図１は紙束の一側縁に対して用いるに適した本発明による第一の実施例の紙クリップ１０を示し、ここでは使用前または不使用時の平らな状態にある。紙クリップ１０は、ここでは線条材をほぼＵ字形に折り曲げた両脚部分で第一の平面を形成する中央部１１と、中央部両脚部分の両端から左右両側に対称的に連続して折り曲げて一対の第二の平面を形成した一対の側腕部１２ａ，１２ｂとでなり、中央部１１の第一平面と側腕部１２ａ，１２ｂの第二平面とは同一の平面内に形成される。線条材としては例えば通常用いられる軟鉄ワイヤの様な金属ワイヤが使用される。
【００１５】
この紙クリップ１０の作成には、１個分の長さの線条材のほぼ中心点ｃで長さ方向に直交する軸線ａについて線条材の両側をほぼＵ字状に折り曲げてまず中央部１１を形成する。更にその両脚部分の、中心点ｃから等距離の第一折曲点ｉで左右に、軸線ａに対して直角にかつ互いに一直線に整合するように線条材の両側部分を折り曲げて、三角形の両側腕部１２ａ，１２ｂの各々の第一辺部分１２−１とする。次いで第一折曲点から等距離の第二折曲点ｉｉで、各第一辺部分の外側部分を中心点ｃに接近する方向に鋭角に折り曲げて側腕部の各第二辺部分１２−２とする。最後に、中央部１１の折曲部１１ａに近接しかつ第二折曲点ｉｉから等距離の第三折曲点ｉｉｉで鋭角に線条材の残りの部分を第一折曲点ｉに向けて折り曲げ、中央部１１の両脚部分の外側に沿って伸びて第一折曲点ｉの近傍で終端する側腕部１２ａ，１２ｂの各第三辺部分１２−３とする。この場合、側腕部１２ａ，１２ｂの軸線ａ方向の長さを図１に示すように中央部１１の長さよりやや大にすることが便宜であるが、同じ長さとしても、或いは中央部を側腕部より長くしても良い。
【００１６】
この図１の実施例の紙クリップ１０は図２および３に示すようにクリップする紙束Ｐの直線縁辺に対して使用するに適する。使用者はまず中央部１１を保持して側腕部１２ａ，１２ｂのいずれか一方または両方の第三折曲点ｉｉｉ近傍の先端部分を紙束Ｐの一面、この場合図２または図３において下面に当て、次いで中央部１１の折曲部分１１ａを紙束Ｐの他面、この場合上面に当て、側腕部のそれぞれの第一辺部分１２−１が紙束Ｐの側縁面に当接するまで紙クリップ１０全体を紙束Ｐの両面に沿って押し込む。その時、図２及び３に点線で示すように、両側腕部１２ａ，１２ｂの第二辺部分１２−２と第三辺部分１２−３は紙束Ｐの下面に、中央部１１はその上面に、それぞれ平坦に当接し、両側腕部のそれぞれの第一辺部分１２−１は紙束Ｐの側縁面に沿って上下面間で斜めに伸びる。言い換えれば、中央部１１と両側腕部１２ａ，１２ｂの第二辺、第三辺部分１２−２，１２−３とは、それらの間を連結する両第一辺部分１２−１を第一、第二折曲点ｉ，ｉｉにおいて捻転させて斜交させることにより、それぞれの平面に直交する方向に、互いに平行して離間するが、ここで捻転斜交状態にある両第一辺部分１２−１には弾性復帰力が生じており、この復帰力が中央部１１と両側腕部第二、第三辺部分１２−２，１２−３とを元の同一平面状態に戻す方向に作用し、平行離間する第一平面と第二平面の間に紙束を保持するバネ力を生じさせる。
【００１７】
両側腕部の第一辺部分１２−１の捻転斜交による弾性復帰力は紙束Ｐの面に対する斜交の度合いが大きいほど強くなる、つまりクリップする紙束が厚い程この紙クリップの紙保持力は増すが、本発明の更に重要な特徴として注目すべきことは、側腕部１２ａ，１２ｂが中央部１１の両側に対称に設けられる事により弾性復帰力が中央部１１の両側において均等に生じることである。これによって本発明の紙クリップの紙保持力が倍増するばかりでなく、両側腕部の第二、第三辺部分１２−２，１２−３と中央部１１のそれぞれが常に平らに各紙面に当接する事となる。特に第一辺部分１２−１の第二折曲点ｉｉにおける捻転によるバネ力は第三辺部分１２−３の終端部分を紙面に押しつける方向に働くから、従来の紙クリップにおけるような紙束の厚さが増した場合に生じる紙クリップの一部の浮き上がりと、それに伴うクリップと紙面との接触面減少による紙クリップの滑りと脱落が皆無となる。
【００１８】
【実施例２】
図４は本発明の第二の実施例による紙クリップ２０を使用前における平坦な状態の平面図で示す。この紙クリップ２０は特に紙束の角部に使用するに適した構成を有し、実施例１における紙クリップ１０との差異は、側腕部２２ａ，２２ｂの両第一辺部分２２−１が第一折曲点ｉにおいて中央部２１の軸線ａに対し直角を越えて４５度となるように折り曲げられ、従って両第一辺部分が互いに直角を成すことにある。他の点、つまり第二折曲点ｉｉにおいて第二辺部分２２−２が中央部２１の折曲部分２１ａ付近に向かうように折り曲げられ、中央部折曲部分２１付近の第三折曲点ｉｉｉにおいて第三辺部分２２−３が中央部２１の両脚の外側にほぼ沿って伸びるように折り曲げられる点、そして紙クリップの不使用時において中央部の第一平面と側腕部の第二平面が同一の平面を占める点は実施例１の場合と同じである。
【００１９】
使用の際には、図５及び６に示すように、紙クリップ２０の中央部２１を紙束Ｐの角部Ｃにおける一面、図において上面に、両側腕部２２ａ，２２ｂの一方の第二、第三辺部分２２−２，２２−３を角部Ｃの一方の側の、また他方の第二、第三辺部分２２−２，２２−３を角部Ｃの他方の側の他面、図において下面にそれぞれ当接させれば、両側腕部の各第一辺部分２２−１は第一と第二の折曲点ｉ及びｉｉにおいて捻転されて、紙束Ｐの直交して隣接する二つの側縁面に沿って斜交して両面間に伸びる。この位置において各第一辺部分２２−１が両側腕部の第二、第三辺部分２２−２，２２−３の第二平面と中央部２１の第一平面とを互いに平行な離間状態から同一平面となる状態に復帰させる弾性力を生じ、それによってこの紙クリップ２０が紙束Ｐを安定してクリップするように作用することは実施例１の場合と全く同様であるが、図５の平面図から明きらかなように、この紙クリップ２０は紙束Ｐの角部Ｃの互いに隣接直交する両側縁に対称的に、そして均一に作用して完全に角部Ｃにおいて紙束Ｐを確実安定に保持し得る事を顕著な特徴とする。
【００２０】
実施例１及び２では中央部１１，２１の折曲部１１ａ，２１ａを最も一般的な例として半円形にしたものを示すが、これに限らず例えば角形或いはＶ字形の折曲部とすることもできる。更には両側腕部１２ａ，１２ｂ；２２ａ，２２ｂの形状も後述するように各種変形をとりうるが、要は、両側腕部が第一辺部分１２−１；２２−１において中央部から対称的にかつ同一平面内において一旦離間してある長さに亘って伸び、第二、第三辺部分１２−２，１２−３；２２−２，２２−３において再び中央部の両側に戻ってこれに隣接するに至れば良い。
【００２１】
従って両側腕部の第一辺部分を互いに一直線とする実施例１の変更例として、図１では側腕部１２ａ，１２ｂのそれぞれの第二辺部分１２−２と第三辺部分１２−３を相互にＶ字形としてほぼ三角形に形成するが、例えば図７に示すように第二折曲点ｉｉにおける第二辺部分１２−２の第一辺部分１２−１に対する折り曲げ角度を直角とし、第三折曲点ｉｉｉにおける折り曲げを半円形として各側腕部を長めのＤ字形とし、これをＵ字形の中央部と組み合わせて３個のほぼＵ字形を並べた形状としても良い。更に、図１において中央部の両脚部分は軸線ａの両側に離間するが、図８に示すように両脚部分を互いに隣接させても良い。これは図７の場合においても同様にすることができる。また、図９のように中央部をＶ字形とし、両側腕部の三角形をＶ字の両脚部分に添わせるようにしても良い。あるいはまた図１０のように中央部を逆Ｖ字形として両側腕部と共に三つの三角形を並べた形状とすることもできる。ひいては、図１１のように中央部をほぼ円形とし、側腕部の第三辺部分を円形中央部に沿うアーク状としても良い。
【００２２】
両側腕部の第一辺部分が互いに直角となる図４の実施例２の変更例としては、図１２の様に中央部をもＶ字形に形成して、両側腕部の第二、第三辺部分と共に３個のＶ字形を並べた形態がある。この場合中央部の両脚部分が大きく開いていることによって、例えば数枚ずつホチキスで角部を綴じた複数の紙束を重ね、これを本実施例の紙クリップでクリップする時は、多数のホチキス針による紙束の膨らみ部分を紙クリップの中央部内に位置させ、角部を安定してクリップすることができる。その意味で、図１３のように中央部の両脚部分を互いに直角としてほぼＬ字形となるようにすれば、この効果が充分に発揮されるのみでなく、使用したときに中央部は紙束の角部の内側において直角に表れ、安定観のある美観も生じる。またこれら中央部をＶ字形またはＬ字形とした場合、図１４に示すように両側腕部をＵ字形とすることもできる。更には図１５の様に中央部をＣ字形、つまり一部を切り欠いた円形とし、両側腕部の第三辺部分をＣ字形の外側に沿う円弧状としても良い。
【００２３】
いずれの場合も、本発明の紙クリップにおいてはクリップすべき紙束の一方の面上に載る中央部の作る第一平面と、その両側方において同じ紙束の他方の面に載る両側腕部の特に第二、第三辺部分がそれぞれ作る一対の第二平面とが、紙クリップの不使用時においては一平面内に在るが、使用時には側腕部の各第一辺部分を介して互いに紙束の厚さ方向に平行に離間し得る構成が取られるることが必要であり、これが満足される限り中央部とその両側腕部は種々の形状にする事が可能である。
【００２４】
また上記したいずれの実施例と変更例においても両側腕部は比較的に長い第一辺部分を有するものとして示してあるが、これは比較的に厚い紙束をクリップするに適した構成とするためである。そしてこの構成のままでも薄い紙束に対して充分に使用可能であるが、薄い紙束への使用のみを意図すれば第一辺部分は図示の例より短くしても良い。
【００２５】
【発明の効果】
本発明の線条材製紙クリップによれば、紙束の一面に載る第一平面を形成する中央部の両側において、不使用時には第一平面と同一の平面内にあるが使用時には第一平面と平行に離間して紙束の他面に載る二つの第二平面を有する一対の側腕部が設けられ、側腕部の第一辺部分は使用時に第二平面を常に第一平面と同一の平面に復帰させようとする弾性復帰力を均等にかつ平衡に生じ、この弾性復帰力は紙束が厚さを増すにつれて、つまり側腕部の第一辺部分の紙面に対する斜交角度が大きくなると共に強さを増し、そのため従来よりも強力でしかも安定した紙保持力が得られる。
【００２６】
紙束の両面のそれぞれに載る中央部の第一平面と両側腕部の二つの第二平面とは同一の平面内に形成され、互いに交差したり重なったりする部分を含まないため、厚い紙束に対し長期間使用して側腕部の第一辺部分両端の折曲部分が変形して側方平面が中央平面と同一の平面に復帰し得ない場合には、使用者が折曲部分の変形を手で平坦化するのみで簡単に復元可能である。
【００２７】
弾性復帰力が大きくなることはまた本発明の紙クリップを製造する線条材を従来のものより細くしても充分な紙保持力が得られる事となり、製造原価を下げる事が可能となる。
【００２８】
使用時に紙束の側縁に沿って紙束両面間を斜交して伸びる両側腕部の第一辺部分は、中央部の軸線について対称の関係において、互いに直線整合して形成されれば従来の紙クリップと同様に紙束の一側縁に対してより向上したクリップ性能を持って使用でき、また、互いに直角となるように形成されれば従来の紙クリップではクリップし得なかった紙束の角部に完全に適応して上記と全く同様の向上したクリップ性能と共に使用できる。
【００２９】
【図面の簡単な説明】
【図１】図１は本発明の実施例１による紙束側縁用の紙クリップの不使用時における平面図。
【図２】図２は図１の紙クリップの使用状態における平面図。
【図３】図３は図１の紙クリップの使用状態における斜視図。
【図４】図４は本発明の実施例２による紙束角部用の紙クリップの不使用時における平面図。
【図５】図５は図４の紙クリップの使用状態における平面図。
【図６】図６は図４の紙クリップの使用状態における斜視図。
【図７−図１１】図７−図１１はそれぞれ図１の実施例１による紙束側縁用の紙クリップの各種変更形態における不使用時の平面図。
【図１２−図１５】図１２−図１５はそれぞれ図４の実施例２による紙束角部用の紙クリップの各種変更形態における不使用時の平面図。
【符号の説明】
１０；２０ 紙クリップ
１１；２１ 中央部
１２ａ，１２ｂ；２２ａ，２２ｂ 側腕部
１２−１；２２−１ 第一辺部分
１２−２；２２−２ 第二辺部分
１２−３；２２−３ 第三辺部分
ａ 中央部軸線
ｃ 中心点
Ｐ 紙束
Ｃ 角部[0001]
[Industrial applications]
SUMMARY OF THE INVENTION The present invention relates to a paper clip, in particular, an elastic wire that is bent to form at least two portions that are continuous with each other, and the elasticity generated when two planes formed by the two portions are separated from each other in a direction orthogonal to these. The present invention relates to a clip for elastically holding a plurality of sheets of paper between two portions by using a return force. Further, the paper clip of the present invention is particularly useful when a relatively large number of papers are aligned and held, or when a plurality of documents whose corners are stapled with a stapler or the like are bundled and held at the same corner, and the like. is there.
[0002]
[Prior art]
Conventional paper clips are roughly classified into three types. The first type is a metal wire rod which is sequentially bent at three places into a substantially semicircular shape, and has two elongated U-shaped legs which contact inside and outside in the same plane. Each end is formed continuously by a semicircular portion formed by the second bending, and the inner and outer legs contacting in the same plane are connected when separated from each other in a direction perpendicular to the plane. The paper is sandwiched between the legs by the return spring force generated by the torsion. This type of paper clip has a semicircular shape with a small elastic continuous portion and is suitable for bundling and holding a relatively small number of papers, such as a few to about 10 to 20 papers. Formed to dimensions.
[0003]
The second type is an application of the first type of paper clip, in which a continuous portion between both legs is straightened to have a certain length to increase the paper holding capacity. is there. Also in this case, the length of the linear continuous portion is not increased so much, and is used at a size intermediate between the small size and the medium size.
[0004]
The third type of paper clip is a pair of straight-line central continuities having a certain length, which are formed by bending the linear members so as to intersect each other at an acute angle from both ends of the straight central continuous portion so as to overlap in an X shape. And then bent again at an acute angle at a second bending point equidistant from the first bending point, towards the first bending point of the other leg, respectively, from this first bending point At a third bending point before the distance, both legs are bent at an obtuse angle toward the respective first bending points, and are terminated near the first bending points. Accordingly, the legs extend in a direction approaching each other from both ends of the central connecting portion, and are formed in a pair of substantially triangular shapes that overlap and intersect with each other. When the two surfaces defined by the legs of the triangle are separated from each other, the central continuous portion is formed. The paper is sandwiched between the legs by using the return spring force generated by the torsion. In this case, since the central continuous portion obliquely crossing the thickness direction of the edge of the bundled paper is relatively long, this kind of so-called X-shaped paper clip is more suitable for holding a larger number of papers than those described above. Used in the form of medium to large size.
[0005]
[Problems to be solved by the invention]
In any of the conventional paper clips described above, the length of the substantially U-shaped or triangular legs and the length of the semicircular or straight continuation therebetween define the paper holding capacity of the paper clip. In the case of the semicircular continuous portion of the first type, the length of the continuous portion of the two legs is limited to a width smaller than the length of the leg because both legs have an elongated U-shape. Is done. Therefore, in order to increase the length of the continuous portion, the length of the leg must be increased. On the other hand, in the semicircular continuous portion, the paper bundle held therebetween is concentrated at the center of the semicircle irrespective of the size thereof. If the paper bundle is thin, the paper holding portion is deformed into a wave shape by the clip. In addition, if the paper bundle is relatively thick, the continuous portion between the two legs joined to the upper surface and the lower surface of the paper bundle is near a right angle along the edge between both surfaces of the paper bundle because the width is narrow. , Whereby the twist of the wire material given to both legs is almost maximum, and the free ends of both legs are pressed flat against the paper surface, but the side connected to the continuous portion is twisted and partially lifted up . Such a bundle of papers loses the flatness of the bundle of papers either alone or when many are stacked.
[0006]
Even when the continuous portion is made linear as in the second type, the connection length is limited along the edge of the paper bundle for an appropriate number of papers because the length is limited as described above. The twisting of the filament material is relatively weaker than the above, since it crosses between the two sides almost diagonally.However, if the paper bundle becomes thicker, the continuous part becomes closer to the right angle to both sides of the paper, and Similar partial lifting of both legs is inevitable.
[0007]
In the case of the third type of paper clip having substantially triangular crossing legs, the straight continuous portion is considerably long. The oblique state between the two surfaces is maintained, and the return spring force is appropriately maintained without being excessive. On the other hand, this paper clip can be used for a considerably thick bundle of paper.However, if the thickness exceeds a certain level, the return spring force becomes excessive, and not only does a part of each leg rise to lose flatness, but also the The friction with the paper surface is reduced, and the entire paper clip slips and comes off the clip position. In addition, if the use state in which the overlapping and pressure-contacting legs are separated and kept is continued for a long time, the legs are deformed and the return spring force is reduced, and the legs are separated and are no longer usable. In order to restore the original shape, the legs are not in the same plane as in the first type, so the legs are temporarily expanded sideways like an inverted U shape from the X-shaped intersection position to intersect. A complicated manual operation is needed to solve the relationship, twist each leg at this position in the press-contact direction at the intersection at the continuous portion, and then return to the original X-shaped intersection again.
[0008]
Another problem common to the above-described first to third types of conventional paper clips is that there is no paper clip particularly suitable for use in a corner portion of a paper bundle. In the case of documents written horizontally on the left, paper clips are usually used near the upper left corner of the paper bundle. It should be located as close to the left corner as possible. On the other hand, when the paper bundle to be clipped includes a plurality of documents whose upper left corners are stapled, the paper clips must be used avoiding the stapling position, and a desired state cannot be obtained at present. Nothing can be used effectively at the corners of the bundle.
[0009]
The present invention solves these problems and can be used on a few to as many as 20 to 30 or even more bundles of paper, i.e., in all conventional small, medium and large sizes. An object of the present invention is to provide a paper clip that can be used without hindrance.
[0010]
A further object of the present invention is to provide a paper clip which can maintain a flatness on the paper surface and always obtain a stable use effect even when used on a relatively large number of papers.
[0011]
The present invention further provides that each part facing each of both sides of the paper and their continuous parts do not intersect or overlap with each other, and are formed in the same plane, and are used for a large number of sheets of paper. Another object of the present invention is to provide a paper clip which can be restored by simple manual operation only by returning each part to the same plane.
[0012]
It is a further object of the present invention to provide a paper clip that is particularly useful at the corners of a paper bundle.
[0013]
[Means for Solving the Problems]
According to the present invention, the above-described object is to provide a central portion that is bent symmetrically with respect to an axis orthogonal to the longitudinal center of one linear member to form a first plane, and a linear member extending from both ends of the central portion. The material is sequentially bent symmetrically about the axis in the same plane as the first plane of the central portion, and approaches the first side portion and the central portion of the central portion which are once extended in both directions from both ends of the central portion. A pair of side arms each terminating at a third side portion extending along the central portion via the second side portion and extending in the same plane as the first plane to form a pair of second planes. In use, the central portion is located on one surface of the paper bundle to be clipped, and the first side portions of the pair of side arms extend obliquely from one surface of the paper bundle to the other surface along the side edge of the paper bundle, The second and third sides separate the second plane from the first plane in parallel It is solved by the wire member made of a paper clip located on the other side of the paper bundle by keeping Te.
[0014]
Embodiment 1
FIG. 1 shows a first embodiment of a paper clip 10 according to the present invention, suitable for use on one side of a stack of paper, in a flat state before use or when not in use. In this case, the paper clip 10 is formed by bending a linear material substantially in a U-shape to form a first plane with both leg portions forming a first plane, and symmetrically and continuously bending both ends from both ends of the central portion both right and left sides. The pair of side arms 12a and 12b form a pair of second planes, and the first plane of the central part 11 and the second plane of the side arms 12a and 12b are formed in the same plane. As the wire material, for example, a metal wire such as a commonly used soft iron wire is used.
[0015]
The paper clip 10 is formed by bending both sides of the wire in a substantially U-shape with respect to an axis a orthogonal to the longitudinal direction at a substantially central point c of the wire having a length of one piece. 11 is formed. Further, both side portions of the linear material are bent right and left at a first bending point i equidistant from the center point c so as to be perpendicular to the axis a and aligned with each other to form a triangular shape. The first side portion 12-1 of each of the both arm portions 12a and 12b is referred to as a first side portion 12-1. Next, at a second bending point ii equidistant from the first bending point, the outer portion of each first side portion is bent at an acute angle in a direction approaching the center point c to form each second side portion 12-of the side arm portion. Let it be 2. Finally, the remaining part of the wire is sharply directed to the first bending point i at the third bending point iii which is close to the bending part 11a of the central part 11 and is equidistant from the second bending point ii. The third side portions 12-3 of the side arms 12a and 12b extending along the outer sides of both legs of the central portion 11 and terminating near the first bending point i. In this case, it is convenient to make the length of the side arm portions 12a and 12b in the direction of the axis a slightly larger than the length of the central portion 11 as shown in FIG. It may be longer than the side arm.
[0016]
The paper clip 10 of the embodiment of FIG. 1 is suitable for use on a straight edge of a paper bundle P to be clipped as shown in FIGS. First, the user holds the center portion 11 and holds one or both of the side arm portions 12a and 12b and the leading end portion near the third bending point iii on one surface of the sheet bundle P, in this case, the lower surface in FIG. 2 or FIG. Then, the bent portion 11a of the central portion 11 is brought into contact with the other surface of the paper bundle P, in this case, the upper surface, and each first side portion 12-1 of the side arm portion comes into contact with the side edge surface of the paper bundle P. The entire paper clip 10 is pushed along both sides of the paper bundle P until the paper clip 10 is pressed. At this time, as shown by dotted lines in FIGS. 2 and 3, the second side portion 12-2 and the third side portion 12-3 of the both arm portions 12a and 12b are on the lower surface of the paper bundle P, and the central portion 11 is on the upper surface thereof. , Respectively, and the first side portions 12-1 of the both arm portions extend obliquely between the upper and lower surfaces along the side edge surface of the paper bundle P. In other words, the center portion 11 and the second sides and the third side portions 12-2 and 12-3 of the side arm portions 12a and 12b are defined by first and second first side portions 12-1 connecting between them. By being twisted and oblique at the second bending points i and ii, they are separated in parallel to each other in a direction perpendicular to the respective planes. 1 has an elastic restoring force, and this restoring force acts in a direction to return the central portion 11 and the second and third side portions 12-2 and 12-3 to the same plane state, A spring force is generated between the first plane and the second plane that are separated in parallel from each other.
[0017]
The elastic restoring force of the first side portions 12-1 of the both arm portions due to the oblique twisting increases as the degree of oblique to the surface of the paper bundle P increases, that is, the thicker the paper bundle to be clipped, the more the paper clip of the paper clip is held Although the force increases, it is notable that a further important feature of the present invention is that the side arm portions 12a and 12b are provided symmetrically on both sides of the central portion 11 so that the elastic return force is evenly distributed on both sides of the central portion 11. Is to happen. This not only doubles the paper holding force of the paper clip of the present invention, but also makes each of the second and third side portions 12-2 and 12-3 and the central portion 11 of both side arms always flat against the paper surface. Will be in contact with you. In particular, the spring force due to the torsion of the first side portion 12-1 at the second bending point ii acts in the direction of pressing the end portion of the third side portion 12-3 against the paper surface. There is no slipping or falling off of the paper clip due to the lifting of a part of the paper clip which occurs when the thickness increases, and the accompanying decrease in the contact surface between the clip and the paper surface.
[0018]
Embodiment 2
FIG. 4 is a plan view showing a paper clip 20 according to a second embodiment of the present invention in a flat state before use. The paper clip 20 has a configuration particularly suitable for use at the corners of a paper bundle. The difference from the paper clip 10 in the first embodiment is that both first side portions 22-1 of the side arms 22a and 22b are different. At the first folding point i, the central portion 21 is bent at an angle of 45 degrees beyond the right angle with respect to the axis a, so that both first side portions are at right angles to each other. At the other point, that is, at the second bending point ii, the second side portion 22-2 is bent toward the vicinity of the bent portion 21a of the central portion 21, and the third bent point iii near the central bent portion 21 At the point where the third side portion 22-3 is bent so as to extend substantially along the outside of both legs of the central portion 21, and the first plane of the central portion and the second plane of the side arm portion when the paper clip is not used. The point occupying the same plane is the same as in the first embodiment.
[0019]
In use, as shown in FIGS. 5 and 6, the central portion 21 of the paper clip 20 is placed on one surface of the corner portion C of the paper bundle P, and on the upper surface in the drawing, the second one of the two side arm portions 22a and 22b. The third side portions 22-2 and 22-3 are on one side of the corner C, and the other second and third side portions 22-2 and 22-3 are on the other side of the other side of the corner C. In the drawing, if the first side portions 22-1 of the both arm portions are abutted on the lower surfaces, the first side portions 22-1 are twisted at the first and second bending points i and ii, and are orthogonally adjacent to the paper bundle P. It extends obliquely along the two side edges between the two sides. At this position, each first side portion 22-1 separates the second plane of the second and third side portions 22-2 and 22-3 of the both-side arm portions and the first plane of the central portion 21 from a parallel separated state. The paper clip 20 acts to stably clip the paper bundle P by generating an elastic force for returning to the coplanar state, which is exactly the same as that of the first embodiment. As is clear from the plan view, this paper clip 20 acts symmetrically and uniformly on both sides of the corner C of the paper bundle P which are adjacent to each other at right angles to completely secure the paper bundle P at the corner C. It is a remarkable feature that it can be stably held.
[0020]
In the first and second embodiments, the bent portions 11a and 21a of the central portions 11 and 21 are formed as semi-circular shapes as the most general example. You can also. Further, the shapes of the both arm portions 12a, 12b; 22a, 22b can take various deformations as described later, but the point is that the both arm portions are symmetrical from the central portion in the first side portions 12-1; 22-1. And at the second and third side portions 12-2, 12-3; 22-2, 22-3, return to both sides of the center again. It is only necessary to be adjacent to
[0021]
Therefore, as a modified example of the first embodiment in which the first side portions of both side arm portions are aligned with each other, in FIG. 1, the second side portion 12-2 and the third side portion 12-3 of the side arm portions 12a and 12b are respectively used. Mutually forming a substantially V-shaped triangle, the bending angle of the second side portion 12-2 at the second bending point ii with respect to the first side portion 12-1 at the second bending point ii is set to be a right angle as shown in FIG. The bending at the bending point iii may be semicircular, each side arm may have a longer D-shape, and this may be combined with the center of the U-shape to form a shape in which three substantially U-shapes are arranged. Further, in FIG. 1, the two leg portions at the center are separated on both sides of the axis a, but the two leg portions may be adjacent to each other as shown in FIG. This can be similarly applied to the case of FIG. Further, as shown in FIG. 9, the central portion may be V-shaped, and the triangles of both arm portions may be attached to both legs of the V-shape. Alternatively, as shown in FIG. 10, the central portion may be formed in an inverted V-shape and three triangles are arranged along with both arm portions. As a result, as shown in FIG. 11, the central portion may be substantially circular, and the third side portion of the side arm may be formed in an arc shape along the circular central portion.
[0022]
As a modification of the second embodiment of FIG. 4 in which the first side portions of both side arm portions are at right angles to each other, the center portion is also formed in a V shape as shown in FIG. There is a form in which three V-shapes are arranged along with a side portion. In this case, since both legs at the center are widely opened, for example, a plurality of paper bundles whose corners are stapled with staples are stacked, and when this is clipped with the paper clip of this embodiment, a large number of staples are required. The bulging portion of the paper bundle by the needle is located in the center of the paper clip, and the corner can be stably clipped. In that sense, if the center legs are substantially L-shaped at right angles to each other as shown in FIG. 13, not only this effect is sufficiently exerted, but also the center portion of the paper bundle when used is used. Appears at a right angle inside the corner, and also produces a stable and beautiful appearance. When these central portions are V-shaped or L-shaped, both arm portions can be U-shaped as shown in FIG. Further, as shown in FIG. 15, the central portion may have a C-shape, that is, a partially cutout circular shape, and the third side portions of both arm portions may have an arc shape along the outside of the C-shape.
[0023]
In any case, in the paper clip of the present invention, the first plane formed by the central portion on one surface of the paper bundle to be clipped and the two side arms on the other surface of the same paper bundle on both sides. In particular, the pair of second planes respectively formed by the second and third side portions are in one plane when the paper clip is not used, but are in use through the first side portion of the side arm when used. It is necessary to adopt a configuration capable of being spaced apart in parallel with the thickness direction of the paper bundle, and as long as this is satisfied, the central portion and the arms on both sides thereof can be formed into various shapes.
[0024]
In each of the above-described embodiments and modifications, both arm portions are shown as having a relatively long first side portion, but this is a configuration suitable for clipping a relatively thick bundle of paper. That's why. Although this configuration can be used satisfactorily for thin paper bundles, the first side portion may be shorter than the illustrated example if only the use for thin paper bundles is intended.
[0025]
【The invention's effect】
According to the linear material papermaking clip of the present invention, on both sides of the central portion forming the first plane on one surface of the paper bundle, when not in use is in the same plane as the first plane, but when in use, the first plane A pair of side arms having two second planes that are separated in parallel and rest on the other surface of the paper bundle are provided, and the first side portion of the side arm always uses the second plane as the first plane when used. The elastic return force for returning to a flat surface occurs evenly and equilibrium, and the elastic return force increases as the thickness of the paper bundle increases, that is, the oblique angle of the first side portion of the side arm portion with respect to the paper surface increases. In addition, the strength is increased, so that a stronger and more stable paper holding force than before can be obtained.
[0026]
The first plane of the central part and the two second planes of the arms on both sides which are respectively placed on both sides of the paper bundle are formed in the same plane, and do not include portions that intersect or overlap each other. If the bent part at both ends of the first side of the side arm is deformed due to long-term use and the side plane cannot return to the same plane as the central plane, the user The deformation can be easily restored only by flattening the deformation by hand.
[0027]
An increase in the elastic restoring force also allows a sufficient paper holding force to be obtained even if the linear material for manufacturing the paper clip of the present invention is made thinner than the conventional one, and the manufacturing cost can be reduced.
[0028]
Conventionally, the first side portions of both arm portions, which extend obliquely between both sides of the paper bundle along the side edges of the paper bundle during use, are formed so as to be linearly aligned with each other in a symmetric relationship with respect to the central axis. A paper bundle that can be used with improved clip performance on one side edge of a paper bundle like the paper clip of the above, and that could not be clipped with a conventional paper clip if formed so as to be perpendicular to each other And can be used with the same improved clip performance as above.
[0029]
[Brief description of the drawings]
FIG. 1 is a plan view when a paper bundle side edge paper clip according to a first embodiment of the present invention is not used.
FIG. 2 is a plan view of the paper clip of FIG. 1 in a used state;
FIG. 3 is an exemplary perspective view of the paper clip of FIG. 1 in a used state;
FIG. 4 is a plan view when a paper bundle corner paper clip according to a second embodiment of the present invention is not used.
FIG. 5 is a plan view of the paper clip of FIG. 4 in a used state;
FIG. 6 is a perspective view of the paper clip of FIG. 4 in a used state;
7 to 11 are plan views of the paper clip for the side edge of the paper bundle according to the first embodiment of FIG. 1 when not used in various modifications.
12 to 15 are plan views of the paper bundle corner paper clip according to the second embodiment of FIG. 4 when not used in various modifications.
[Explanation of symbols]
10; 20 paper clip 11; 21 central part 12a, 12b; 22a, 22b side arm part 12-1; 22-1 first side part 12-2; 22-2 second side part 12-3; Three sides a Central axis c Center point P Bundle C Corner
