JPH078150Y2 - Paper cutter - Google Patents
Paper cutterInfo
- Publication number
- JPH078150Y2 JPH078150Y2 JP1988114949U JP11494988U JPH078150Y2 JP H078150 Y2 JPH078150 Y2 JP H078150Y2 JP 1988114949 U JP1988114949 U JP 1988114949U JP 11494988 U JP11494988 U JP 11494988U JP H078150 Y2 JPH078150 Y2 JP H078150Y2
- Authority
- JP
- Japan
- Prior art keywords
- cutter
- cutting blade
- hand cutter
- hand
- shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Nonmetal Cutting Devices (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、用紙を所望のサイズ、例えばA4,B4等に裁断
するペーパーカッターに関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a paper cutter for cutting a paper into a desired size such as A4 or B4.
従来のペーパーカッターは、例えば第６図に示すよう
に、直方板である裁断台１の側面に下裁断刃６と軸２と
を設け、該軸２の外周に巻回配備されたコイルバネ３に
よりａ方向に付勢されるハンドカッター４を設けて、ｂ
方向に前記ハンドカッター４を回動させて前記裁断台１
上に置かれた用紙を前記上裁断刃41と前記下裁断刃６と
で裁断するものが知られている。In a conventional paper cutter, for example, as shown in FIG. 6, a lower cutting blade 6 and a shaft 2 are provided on a side surface of a cutting base 1 which is a rectangular plate, and a coil spring 3 wound around the outer circumference of the shaft 2 is used. Provide a hand cutter 4 that is biased in the a direction, and b
By rotating the hand cutter 4 in the direction
Which cut sheets placed on top with the upper cutting blade 4 1 and the lower cutting blade 6 is known.
ところが、従来のペーパーカッターでは、裁断前におい
てハンドカッター４が自重により回動落下しないよう
に、たえずａ方向にコイルバネ11で強い力で付勢してあ
るため、ハンドカッター４が静止するまで勢いよく回動
して非常に危険であった。また裁断に際しては前記コイ
ルバネ11のバネ力に抗してｂ方向に前記ハンドカッター
４を回動させるのであるが、前記コイルバネ11が軸２の
外周に巻回配備してあるだけなので、前記コイルバネ11
に対する負荷が大きくなり、ハンドカッター４の回動角
θが大きければ大きいほど、ねじり角が大きくなり、繰
り返し動作により前記コイルバネ11がしばしばねじ切れ
てしまうという欠点があった。However, in the conventional paper cutter, the hand cutter 4 is constantly urged by a strong force in the direction a by the coil spring 11 so that the hand cutter 4 does not rotate and fall due to its own weight before cutting. It turned and was very dangerous. When cutting, the hand cutter 4 is rotated in the direction b against the spring force of the coil spring 11. However, since the coil spring 11 is only wound around the outer circumference of the shaft 2, the coil spring 11 is not wound.
There is a drawback that the larger the load on the blade and the larger the turning angle θ of the hand cutter 4, the larger the twisting angle, and that the coil spring 11 is often broken by repeated operation.
本考案は、これら従来の欠点を適確に排除しようとする
もので、ハンドカッターが自重により回動落下しないよ
う釣り合わせ、任意の角度位置でハンドカッターを静止
する構成とすることにより、裁断作業を安全で、かつ容
易に行うことを可能とし、裁断動作におけるハンドカッ
ターの繰り返し動作により、コイルバネがねじ切れない
耐久性のあるペーパーカッターを安価な状態で提供する
ことを目的としている。The present invention is intended to properly eliminate these conventional drawbacks, and balances the hand cutter so that it does not rotate and fall due to its own weight, and the hand cutter is stationary at an arbitrary angle position to perform cutting work. The purpose of the present invention is to provide a durable paper cutter in which the coil spring is not twisted by the repeated operation of the hand cutter in the cutting operation at a low cost.
本考案は、裁断台１の下裁断刃６の端部側面に設けた軸
２に上裁断刃41のあるハンドカッター４を可動自在に軸
支し、該ハンドカッター４をコイルバネ12で付勢された
スラストワッシャ10で下裁断刃６に圧接し、上裁断刃41
が下裁断刃６に対して交叉摩擦移動するように構成した
ペーパーカッターにおいて、前記下裁断刃６の側面に対
接するハンドカッター４の内側面が圧接されたハンドカ
ッター４を自重降下せず釣り合って回動角θを持った位
置で静止するように、ハンドカッター４に備えた支軸Ａ
と、裁断台１から軸２から上方位置に延びた支持部材５
の先端部に備えた支軸Ｂとの間に、カッター吊り上げ釣
り合用の引張バネ３を張装配備したものである。This invention is a hand cutter 4 with the upper cutting blade 4 1 journaled freely movable in the shaft 2 provided on the side surface of the lower cutting blade 6 of the cutting table 1, urges the hand cutter 4 by the coil spring 12 The thrust washer 10 is pressed against the lower cutting blade 6 and the upper cutting blade 4 1
In a paper cutter configured to cross frictionally move with respect to the lower cutting blade 6, the inner surface of the hand cutter 4 that is in contact with the side surface of the lower cutting blade 6 is pressed against the hand cutter 4 and is balanced without falling by its own weight. A spindle A provided on the hand cutter 4 so as to be stationary at a position having a rotation angle θ.
And the supporting member 5 extending from the cutting table 1 to the upper position from the shaft 2.
The tension spring 3 for tensioning and lifting the cutter is stretched and arranged between the support shaft B provided at the tip of the.
本考案のペーパーカッターでは紙の裁断前においては、
ハンドカッター４は引張バネ３によりバネ力およびスラ
ストワッシャ10のスラスト抵抗および下裁断刃６に対す
る前記ハンドカッター４の上裁断刃41の乗り上げ抵抗に
よるモーメントと、前記ハンドカッター４の自重による
モーメントが釣り合って、或る所定のわずかな回動角で
止まり、さらに上記モーメントが総合的に働いてその釣
り合いが任意の回動角においても成り立つため、常にハ
ンドカッター４は自重により回動落下せずに任意の回動
角で静止した状態を保つ。With the paper cutter of the present invention, before cutting the paper,
And the moment due to riding resistance on the cutting blade 4 1 of the hand cutter 4 against the thrust resistance and lower the cutting blade 6 of the spring force and the thrust washer 10 by the hand cutter 4 tensile spring 3, moment balanced by the weight of the hand cutter 4 Then, the hand cutter 4 stops at a certain predetermined small rotation angle, and the above moment acts comprehensively to establish the balance even at an arbitrary rotation angle. Therefore, the hand cutter 4 does not rotate and fall due to its own weight at all times. Keep stationary at the turning angle of.
従って、ハンドカッター４が静止するまで勢いよく回動
することはないので、安全でありハンドカッター４を下
方向に下げ降ろせば容易に裁断をすることができる。Therefore, since the hand cutter 4 does not turn vigorously until it comes to rest, it is safe and the hand cutter 4 can be easily cut by lowering it down.
本考案の実施例第１〜４図例で説明すると、脚部８で支
えられた直方板である裁断台１の側面に下裁断刃６を備
え、さらに該下裁断刃６から突出させて軸２を前記裁断
台１の一端側面に、またストッパ７を他方側面に設け、
該軸２にハンドカッター４を回動可能に設けてある。こ
のハンドカッター４は先端を操作部42とし、下端を該下
裁断刃６に対接する内側面を全長700mmに対して３〜5mm
の深さを有する曲率半径をもつ曲面43に構成した上裁断
刃41とすると共に、凹部９を設けたハンドカッター４を
用い、さらに該軸２の外周に前記ハンドカッター４の反
対接側の面をコイルバネ12で押圧するスラストワッシャ
10を軸２に嵌挿してナット13で締付連結し、任意の回動
角θで下裁断刃６の上に上裁断刃41が乗り上げる構成と
してあり、そして前記裁断台１の一端部に略Ｌ字形の支
持部材５を上方に向かって立ち上げて突出させて設け、
前記ハンドカッター４のほぼ中間部に支軸Ａを突設し、
また前記支持部材５の上端部に支軸Ｂを前記支軸Ａと略
々平行位置に設け、１本又は２本の引張バネ３を前記支
持Ａと支軸Ｂとに張装配置して、前記ハンドカッター４
をａ方向に付勢し、任意の回動角θで前記ハンドカッタ
ー４が自重により回動降下しないよう釣り合い任意の角
度での静止を可能とし、ｂ方向に前記ハンドカッター４
を回動降下させて前記上裁断刃41と前記下裁断刃６とで
紙の裁断を行い、不使用時には前記ストッパ７を該凹部
９を係合させて前記ハンドカッター４を裁断台１に係止
するペーパーカッターとしてある。An embodiment of the present invention will be described with reference to FIGS. 1 to 4. An undercutting blade 6 is provided on a side surface of a cutting board 1 which is a rectangular plate supported by a leg portion 8 and is further protruded from the undercutting blade 6 so as to protrude from the shaft. 2 is provided on one side surface of the cutting table 1, and a stopper 7 is provided on the other side surface,
A hand cutter 4 is rotatably provided on the shaft 2. The hand cutter 4 is the leading operation unit 4 2, 3 to 5 mm and an inner surface in contact pair lower end to the lower cutting blade 6 relative to the total length 700mm
Is used as the upper cutting blade 4 1 having a curved surface 4 3 having a radius of curvature having a depth of 1, and a hand cutter 4 provided with a recess 9 is used, and the hand cutter 4 is provided on the outer periphery of the shaft 2 on the opposite side to the hand cutter 4. Thrust washer that presses the surface of the
10 connected tightening with a nut 13 fitted to the shaft 2, there as the upper cutting blade 4 1 rides configuration on the lower cutting blade 6 at any rotation angle theta, and to the one end of the cutting table 1 The substantially L-shaped support member 5 is provided so as to stand up and project upward.
A spindle A is provided so as to protrude substantially in the middle of the hand cutter 4.
Further, a support shaft B is provided at an upper end portion of the support member 5 in a position substantially parallel to the support shaft A, and one or two tension springs 3 are stretched and arranged on the support A and the support shaft B. The hand cutter 4
Is biased in the a direction to balance the hand cutter 4 at an arbitrary rotation angle θ so that the hand cutter 4 does not rotate and fall due to its own weight, so that the hand cutter 4 can be stopped at an arbitrary angle.
The is rotated lowering performs cutting of the paper out with the lower cutting blade 6 and the upper cutting blade 4 1, the hand cutter 4 when not in use to engage the recess 9 of the stopper 7 to the cutting table 1 It is a paper cutter that locks.
この実施例において前記引張バネ３は、なるべくバネ定
数の低いものがよく、紙裁断時における手にかかる負担
を軽減させることを可能とし、不使用時の引張静荷重を
小さいものとして疲労強度を大きいものとするのが好ま
しい。また、前記軸２にはスラストワッシャー10に第４
図に示すようにコイルバネ12を軸２に嵌挿して、前記ハ
ンドカッター４の側面を押圧して自重による回動を制限
するのがよく、このようにすれば、前記引張バネ３のバ
ネ定数および初張力を小さく設定することが可能となり
疲労強度を向上させることができる。In this embodiment, the tension spring 3 preferably has a spring constant as low as possible, which makes it possible to reduce the burden on the hand when cutting the paper, and reduces the tensile static load when not in use to increase the fatigue strength. Preferably. Further, the shaft 2 has a thrust washer 10 and a fourth
As shown in the figure, it is preferable to insert the coil spring 12 into the shaft 2 and press the side surface of the hand cutter 4 to limit the rotation due to its own weight. By doing so, the spring constant of the tension spring 3 and It is possible to set the initial tension small and improve the fatigue strength.
また、前記引張バネ３を前記支軸Ａと支軸Ｂとに取り付
けたのは、バネをねじることなくバネに対する負荷を軽
減し、回動角θを多少大きくしても繰り返し動作により
破壊することなく、安定して前記ハンドカッター４をつ
り合わせるためである。Further, the tension spring 3 is attached to the support shaft A and the support shaft B in order to reduce the load on the spring without twisting the spring and to break it by repeated motion even if the rotation angle θ is slightly increased. This is because it is necessary to stably balance the hand cutter 4 with each other.
また、第１図において引張バネ３を２本で構成してある
のは、１本の引張バネが疲労破壊してもハンドカッター
４が急激に落下することを防止するためである。Further, in FIG. 1, the two tension springs 3 are formed in order to prevent the hand cutter 4 from dropping suddenly even if one tension spring is damaged by fatigue.
なお、前記ハンドカッター４が前記裁断台１とのなす回
動角θで自重により回動降下しない時、即ち、任意の位
置で静止する際のモーメントのつい合い条件は、第５図
を参照して導くと下式のようになる。For the condition of the moment when the hand cutter 4 does not rotate and descend due to its own weight at the rotation angle θ formed by the cutting table 1, that is, when the hand cutter 4 stands still at an arbitrary position, refer to FIG. It will be like the following formula.
Ｗ・LR2・cosθ＝F1・LR1sinα＋F2・μ・D/2＋Ｍ ……
（１） 但し、W:ハンドカッター自重 LR1:A軸取り付け位置 LR2：ハンドカッターの重心までの距離 F1 :バネ力 F2 :C点のスラスト方向に作用するバネ力 θ：回動角 α：バネの交又角CAB μ：摩擦係数 D :スラストワッシャー径 M :上裁断刃と下裁断刃の摩擦によるモーメント 従って、前記ハンドカッター４は取扱い上、手を離して
も降下するとなく、所定位置に保持されて安全性を大幅
に高められる。W ・ LR 2・ cos θ ＝ F 1・ LR 1 sin α ＋ F 2・ μ ・ D / 2 + M ……
(1) However, W: Hand cutter's own weight LR 1 : A-axis mounting position LR 2 : Distance to the center of gravity of the hand cutter F 1 : Spring force F 2 : Spring force acting in the thrust direction at point C θ: Rotation angle α: Crossing angle of spring CAB μ: Coefficient of friction D: Diameter of thrust washer M: Moment due to friction between upper cutting blade and lower cutting blade Therefore, the hand cutter 4 does not fall even when the hand is released, It is held in position and greatly increases safety.
本考案は、下裁断刃６の側面に対接するハンドカッター
４の内側面が圧接されたハンドカッター４を自重降下せ
ず釣り合って回動角θを持った位置で静止するように、
ハンドカッター４に備えた支軸Ａと、裁断台１から軸２
から上方位置に延びた支持部材５の先端部に備えた支軸
Ｂとの間にカッター吊り上げ釣り合用の引張バネ３を張
装配備したことで、押し切り裁断刃の摩耗が少なく、切
れ味を長期にわたって保ち、紙裁断時における手にかか
る負担も大巾に軽減でき動作の安定性を高めると共に、
バネの疲労強度も向上できて、ハンドカッターが引張バ
ネで吊り上げられた状態となって自重降下せずに釣り合
って任意角度位置で静止するように構成してあるため、
取扱上手を離してもハンドカッターが自然落下したり、
勢いよく跳ね上げたりすることがなく安全に用いられ、
さらにハンドカッターの支軸にコイルバネを巻回配備し
てもバネがねじられたり、カッター操作による疲労を生
じさせることなくバネに対して負荷が小さくなり、回動
角が大きくても繰り返し動作によりバネが破壊すること
のない耐久性の高いペーパーカッターを安価な状態で提
供できる実用上の効果がある。According to the present invention, the hand cutter 4 in which the inner side surface of the hand cutter 4 which is in contact with the side surface of the lower cutting blade 6 is pressed against the side surface of the hand cutter 4 does not drop by its own weight, but balances and stops at a position having a rotation angle θ.
A spindle A provided on the hand cutter 4, and a cutting table 1 to a shaft 2
The tension spring 3 for lifting and lifting the cutter is stretched between the support shaft B provided at the tip of the supporting member 5 extending upward from the upper part of the support member 5, so that the push-cutting blade has less wear and sharpness for a long period of time. It keeps the paper, and the burden on the hand during paper cutting can be greatly reduced, and the stability of operation is improved,
Since the fatigue strength of the spring can also be improved, the hand cutter is suspended by a tension spring so that it balances without falling by its own weight and is stationary at an arbitrary angle position.
Even if you release your hand, the hand cutter will drop naturally,
It is used safely without jumping up vigorously,
Even if a coil spring is wound around the spindle of the hand cutter, the spring will not be twisted or the load on the spring will be reduced without causing fatigue due to cutter operation. There is a practical effect that a highly durable paper cutter that does not break can be provided in an inexpensive state.
第１図は本考案の実施例の斜視図、第２図は本考案の実
施例の側面図、第３図は本考案のハンドカッターの曲面
を表わす上面図、第４図はスラストワッシャ及びコイル
スプリングの取付状態図、第５図は本考案の実施例のモ
ーメントのつり合い図、第６図は従来例の斜視図であ
る。 １……裁断台、２……軸、３……引張バネ、４……ハン
ドカッター、５……支持部材、６……下裁断刃、７……
ストッパー、８……脚部、９……凹部、10……スラスト
ワッシャー、11,12……コイルバネ。1 is a perspective view of an embodiment of the present invention, FIG. 2 is a side view of the embodiment of the present invention, FIG. 3 is a top view showing a curved surface of a hand cutter of the present invention, and FIG. 4 is a thrust washer and a coil. FIG. 5 is a view showing the mounting state of the spring, FIG. 5 is a moment balance diagram of the embodiment of the present invention, and FIG. 6 is a perspective view of a conventional example. 1 ... Cutting base, 2 ... Axis, 3 ... Tensile spring, 4 ... Hand cutter, 5 ... Support member, 6 ... Lower cutting blade, 7 ...
Stoppers, 8 ... Legs, 9 ... Recesses, 10 ... Thrust washers, 11, 12 ... Coil springs.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実公 昭34−20009（ＪＰ，Ｙ１) 実公 昭54−30711（ＪＰ，Ｙ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Shoko 34-20009 (JP, Y1) Shoko 54-30711 (JP, Y2)
Claims (1)
軸２に上裁断刃41のあるハンドカッター４を回動自在に
軸支し、該ハンドカッター４をコイルバネ12で付勢され
たスラストワッシャ10で下裁断刃６に圧接し、上裁断刃
41が下裁断刃６に対して交叉摩擦移動するように構成し
たペーパーカッターにおいて、前記下裁断刃６の側面に
対接するハンドカッター４の内側面が圧接されたハンド
カッター４を自重降下せず釣り合って回動角θを持った
位置で静止するように、ハンドカッター４に備えた支軸
Ａと、裁断台１から軸２より上方位置に延びた支持部材
５の先端部に備えた支軸Ｂとの間にカッター吊り上げ釣
り合用の引張バネ３を張装配備したことを特徴とするペ
ーパーカッター。 1. A hand cutter 4 having an upper cutting blade 4 1 is rotatably supported on a shaft 2 provided on an end side surface of a lower cutting blade 6 of a cutting table 1, and the hand cutter 4 is supported by a coil spring 12. The thrust washer 10 is urged to press against the lower cutting blade 6, and the upper cutting blade is pressed.
4 In paper cutter, which is configured as 1 is cross friction movement with respect to the lower cutting blade 6, the inner surface of the hand cutter 4 which is in contact against the side surface of the lower cutting blade 6 is not its own weight down the hand cutter 4 is pressed against A support shaft A provided on the hand cutter 4 and a support shaft provided at the tip of a support member 5 extending from the cutting base 1 to a position above the shaft 2 so as to be balanced and stationary at a position having a rotation angle θ. A paper cutter characterized in that a tension spring 3 for lifting and balancing the cutter is stretched and arranged between B and B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988114949U JPH078150Y2 (en) | 1988-09-02 | 1988-09-02 | Paper cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988114949U JPH078150Y2 (en) | 1988-09-02 | 1988-09-02 | Paper cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0239895U JPH0239895U (en) | 1990-03-16 |
| JPH078150Y2 true JPH078150Y2 (en) | 1995-03-01 |
Family
ID=31356160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988114949U Expired - Lifetime JPH078150Y2 (en) | 1988-09-02 | 1988-09-02 | Paper cutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH078150Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07165083A (en) * | 1993-12-16 | 1995-06-27 | Murata Mach Ltd | Hand truck |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5649324Y2 (en) * | 1977-08-03 | 1981-11-17 |
-
1988
- 1988-09-02 JP JP1988114949U patent/JPH078150Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0239895U (en) | 1990-03-16 |
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