JP2021003553A - cutter knife - Google Patents
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- JP2021003553A JP2021003553A JP2020106507A JP2020106507A JP2021003553A JP 2021003553 A JP2021003553 A JP 2021003553A JP 2020106507 A JP2020106507 A JP 2020106507A JP 2020106507 A JP2020106507 A JP 2020106507A JP 2021003553 A JP2021003553 A JP 2021003553A
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Abstract
Description
本発明は、カッターナイフに関する。 The present invention relates to a utility knife.
従来、この種のカッターナイフは、ホルダーと、前記ホルダー内に摺動自在に装着されるとともに刃を交換可能に保持するためのスライダーと、前記スライダーに保持されたナイフ刃の刃先をホルダー内に引き込む方向に弾性付勢するコイルバネと、を備え、前記スライダーはスライド操作するための操作部が形成され、前記ホルダーは、前記操作部を前記ホルダーから露出させるスリットが形成されている（例えば特許文献１、２等）。前記操作部の多くは、親指で押し易くするために、前記スリットから突出する突起を備える。 Conventionally, this type of cutter knife has a holder, a slider that is slidably mounted in the holder and holds the blade interchangeably, and a knife blade edge held by the slider in the holder. A coil spring that elastically biases in the pulling direction is provided, the slider is formed with an operation portion for sliding operation, and the holder is formed with a slit for exposing the operation portion from the holder (for example, Patent Document). 1, 2 etc.). Many of the operating parts are provided with protrusions protruding from the slits so that they can be easily pushed by the thumb.
刃は、通孔及び／又は切欠き等からなる被係止部が形成されている。前記被係止部に係止する突起等からなる係止部が前記スライダーに形成されている。 The blade is formed with a locked portion composed of a through hole and / or a notch or the like. A locking portion formed of a protrusion or the like that locks on the locked portion is formed on the slider.
物を切る際には親指で前記コイルバネの弾性力に抗して前記操作部を前記ホルダーの先端側へ押して前記スライダーをスライドさせ、前記スライダーに保持されている刃の刃先を前記ホルダーから突出させる。前記操作部を押している親指を前記操作用突起から離せば、前記コイルバネの弾性力により前記スライダーが引き戻されるとともに、刃が前記ホルダー内に収納される。 When cutting an object, the operating portion is pushed toward the tip of the holder against the elastic force of the coil spring with the thumb to slide the slider, and the cutting edge of the blade held by the slider is projected from the holder. .. When the thumb pushing the operation portion is separated from the operation protrusion, the slider is pulled back by the elastic force of the coil spring, and the blade is housed in the holder.
使用済みの刃は、前記スライダーから外して新しい刃と交換するか、或いは、未使用の側の刃先を利用するために刃を前後反転させて再びスライダーに装着して使用することができる。 The used blade can be removed from the slider and replaced with a new blade, or the blade can be flipped back and forth and reattached to the slider for use in order to utilize the blade edge on the unused side.
しかしながら、上記従来のカッターナイフは、刃をスライダーに着脱しやすくするために、前記スライダーに刃を保持させる前記係止部と前記被係止部との間に隙間が設けられている。この隙間があるため、前記スライダーに対して刃がガタつく。その結果、物を切るときに刃先がその物から受ける力の反作用で、前記ホルダーから突き出した刃先とは反対側で前記ホルダー内に収容されている側の刃先の特に角の部分が、前記ホルダーの内面やスライダーに設けられたブレードガイド等に押し付けられる。押しつけられた刃先は、鋭さが鈍ってしまい、切れ味が悪くなる。 However, in the conventional cutter knife, in order to make it easy to attach / detach the blade to / from the slider, a gap is provided between the locking portion for holding the blade on the slider and the locked portion. Due to this gap, the blade rattles with respect to the slider. As a result, due to the reaction of the force that the cutting edge receives from the object when cutting an object, the corner portion of the cutting edge on the side opposite to the cutting edge protruding from the holder and housed in the holder is the holder. It is pressed against the inner surface of the blade or the blade guide provided on the slider. The sharpness of the pressed cutting edge becomes dull and the sharpness deteriorates.
そこで本発明は、刃を反転させて刃の両側の刃先を利用することができるカッターナイフにおいて、未使用の刃先の切れ味を悪化させないカッターナイフを提供することを主たる目的とする。 Therefore, it is a main object of the present invention to provide a cutter knife that can invert the blade and utilize the cutting edges on both sides of the blade without deteriorating the sharpness of the unused cutting edge.
上記目的を達成するため、本発明に係るカッターナイフは、刃の出入口を備えるホルダーと、前記ホルダー内に摺動自在に装着され、刃を交換可能に保持するスライダーと、を備え、前記スライダーは、刃に形成された被係止部に係止する係止部と、前記係止部で係止した刃の切刃の少なくとも一部を両側から挟持する一対の挟持部とを備える。 In order to achieve the above object, the cutter knife according to the present invention includes a holder provided with an entrance and exit of a blade, and a slider slidably mounted in the holder to hold the blade interchangeably. A locking portion that locks to a locked portion formed on the blade and a pair of holding portions that sandwich at least a part of the cutting edge of the blade locked by the locking portion from both sides are provided.
前記挟持部は、好ましくは、前記刃の切刃の表面に沿って当接するテーパー面を備える。 The sandwiching portion preferably comprises a tapered surface that abuts along the surface of the cutting edge of the blade.
前記テーパー面は、好ましくは、刃の刃先から離間して切刃の表面に沿って当接する。 The tapered surface preferably abuts along the surface of the cutting edge at a distance from the cutting edge of the blade.
好ましくは、前記スライダーは、刃を載置する載置片と、前記載置片を開閉可能に覆うカバー片とを備え、前記載置片及び前記カバー片の其々の内側面に前記挟持部が設けられ、前記載置片及び前記カバー片の一方又は双方は、先端に向かうに従い薄肉となる傾斜面を外側面に備え、前記ホルダーは、前記一対の挟持部が互いに接近する方向に前記傾斜面を案内するように、前記出入口に向けて間隔が狭まる傾斜案内面を内側面に備える。 Preferably, the slider includes a mounting piece on which the blade is mounted and a cover piece that covers the previously described mounting piece so as to be openable and closable, and the holding portion is provided on the inner surface of each of the previously described mounting piece and the cover piece. The above-mentioned placing piece and one or both of the cover pieces are provided with an inclined surface on the outer surface that becomes thinner toward the tip, and the holder is inclined in a direction in which the pair of holding portions approach each other. The inner surface is provided with an inclined guide surface whose space is narrowed toward the entrance / exit so as to guide the surface.
好ましくは、前記スライダーは、前記スライダーを押し操作するための操作部を前記カバー片の外側面に備え、前記ホルダーは、前記操作部を露出させるスリットを備え、前記操作部を押し操作することにより、前記一対の挟持部が互いに接近する方向に押されるように構成されている。 Preferably, the slider is provided with an operating portion for pushing and operating the slider on the outer surface of the cover piece, and the holder is provided with a slit for exposing the operating portion and is operated by pushing the operating portion. , The pair of sandwiching portions are configured to be pushed in a direction approaching each other.
好ましくは、前記ホルダーは、前記操作部が露出する側と反対側の面の先端部に、滑り止め用の凹凸が形成されている。 Preferably, the holder is formed with a non-slip unevenness at the tip of a surface opposite to the side where the operation portion is exposed.
好ましくは、前記ホルダーは、鞘状の本体と、前記スライダーと連結され前記本体の後部から挿入されて取外し可能に固定されるインサート部材と、を備え、前記ホルダーは、前記スリットに円弧状凹部を備え、前記インサート部材は、前記ホルダーに前記インサート部材を固定するための回転式ツマミを備え、前記回転式ツマミは、前記円弧状凹部に係合可能な円弧状周面と、前記本体から前記インサート部材を引き抜き可能とする平行部と、を有する。 Preferably, the holder comprises a sheath-shaped body and an insert member that is connected to the slider and inserted from the rear of the body and fixed removably, the holder having an arcuate recess in the slit. The insert member is provided with a rotary knob for fixing the insert member to the holder, and the rotary knob has an arcuate peripheral surface that can be engaged with the arcuate recess and the insert from the main body. It has a parallel portion that allows the member to be pulled out.
本発明によれば、スライダーに設けられた一対の挟持部が刃の切刃を挟持することにより、スライダーに保持されている未使用の刃先を保護し、切れ味を維持することができる。 According to the present invention, the pair of holding portions provided on the slider hold the cutting edge of the blade, so that the unused cutting edge held by the slider can be protected and the sharpness can be maintained.
本発明に係るカッターナイフの実施形態について、以下に図１〜図１１を参照して説明する。なお、以下の説明において、全図及び全実施形態を通じ、同一又は類似の構成部分には同符号を付している。 An embodiment of the cutter knife according to the present invention will be described below with reference to FIGS. 1 to 11. In the following description, the same or similar components are designated by the same reference numerals throughout the drawings and the embodiments.
図１は、本発明に係るカッターナイフの一実施形態を示す斜視図である。図１に示すように、カッターナイフ１は、前端部に刃２の出入口３を備えるホルダー４と、ホルダー４内に摺動自在に装着され刃２を交換可能に保持するスライダー５と、を備えている。 FIG. 1 is a perspective view showing an embodiment of a cutter knife according to the present invention. As shown in FIG. 1, the cutter knife 1 includes a holder 4 having an entrance / exit 3 of a blade 2 at a front end portion, and a slider 5 slidably mounted in the holder 4 to hold the blade 2 interchangeably. ing.
ホルダー４は、鞘状の本体４ａと、本体４ａの後部から挿入され本体４ａに取外し可能に固定されるインサート部材４ｂを備えている。インサート部材４ｂは、回転式ツマミ４ｂ１を有するロック機構を備える。円形の回転式ツマミ４ｂ１が図１に示す位置では、回転式ツマミ４ｂ１の円弧状周面４ｂ１１、４ｂ１２が本体４ａの円弧状凹部４ａ１、４ａ２と係合し、インサート部材４ｂが本体４ａに摺動不能に固定されている。回転式ツマミ４ｂ１を回して図２に示す位置に変えて、回転式ツマミ４ｂ１の平行部４ｂ１３、４ｂ１４をスリット４ｃの平行な内側面４ｃ１、４ｃ２と平行な位置とすることにより、図３に示すように、回転式ツマミ４ｂ１の係合が解除され、本体４ａからインサート部材４ｂを引き抜くことができる。 The holder 4 includes a sheath-shaped main body 4a and an insert member 4b that is inserted from the rear portion of the main body 4a and is removably fixed to the main body 4a. The insert member 4b includes a locking mechanism having a rotary knob 4b 1 . At the position where the circular rotary knob 4b 1 is shown in FIG. 1, the arcuate peripheral surfaces 4b 11 and 4b 12 of the rotary knob 4b 1 engage with the arcuate recesses 4a 1 , 4a 2 of the main body 4a, and the insert member 4b Is non-slip fixed to the main body 4a. Turn the rotary knob 4b 1 to change it to the position shown in FIG. 2, and set the parallel portions 4b 13 , 4b 14 of the rotary knob 4b 1 to the positions parallel to the parallel inner side surfaces 4c 1 , 4c 2 of the slit 4c. As a result, as shown in FIG. 3, the rotary knob 4b 1 is disengaged, and the insert member 4b can be pulled out from the main body 4a.
スライダー５は、コイルバネで形成された弾性部材６（図４、図５参照）を介してインサート部材４ｂに摺動可能に連結されている。従って、インサート部材４ｂをホルダー４の本体４ａから引き出すことにより、図３に示すように、インサート部材４ｂに連結されているスライダー５をホルダー４の本体４ａから引き出すことができる。 The slider 5 is slidably connected to the insert member 4b via an elastic member 6 (see FIGS. 4 and 5) formed of a coil spring. Therefore, by pulling out the insert member 4b from the main body 4a of the holder 4, as shown in FIG. 3, the slider 5 connected to the insert member 4b can be pulled out from the main body 4a of the holder 4.
スライダー５は、弾性部材６によって、ホルダー４内において出入口３から離間する方向に弾性付勢されている。弾性部材６により、通常時において、スライダー５に保持されている刃２は、ホルダー４内に引き込まれている。 The slider 5 is elastically biased in the holder 4 in a direction away from the doorway 3 by the elastic member 6. The blade 2 held by the slider 5 is pulled into the holder 4 by the elastic member 6 in a normal state.
スライダー５をホルダー４の前方へ押してスライドさせることにより、図６に示すように、ホルダー４の出入口３から、スライダー５に保持されている刃２を突き出させることができる。 By pushing the slider 5 to the front of the holder 4 and sliding it, as shown in FIG. 6, the blade 2 held by the slider 5 can be projected from the doorway 3 of the holder 4.
図示例において、弾性部材６を構成するコイルバネは、スライダー５をホルダー４の前方へスライドさせた時に、圧縮されるように取り付けられている。 In the illustrated example, the coil springs constituting the elastic member 6 are attached so as to be compressed when the slider 5 is slid forward of the holder 4.
スライダー５は、図７、図８に示すように、刃２を載置する載置片５ａと、載置片５ａを開閉可能に覆うカバー片５ｂとを備えている。カバー片５ｂは、回動自在に取り付けられている。 As shown in FIGS. 7 and 8, the slider 5 includes a mounting piece 5a on which the blade 2 is mounted, and a cover piece 5b that covers the mounting piece 5a so as to be openable and closable. The cover piece 5b is rotatably attached.
スライダー５は、スライダー５を押し操作するための操作部５ｃ（図１参照）をカバー片５ｂの外側面に備えている。ホルダー４は、操作部５ｃを露出させるスリット４ｃをホルダー４の側面に備えている。操作部５ｃは、滑り止めたのめの凹凸５ｃ１と、押し操作を容易にするための突起５ｃ２とが形成されている。 The slider 5 is provided with an operation unit 5c (see FIG. 1) for pushing and operating the slider 5 on the outer surface of the cover piece 5b. The holder 4 is provided with a slit 4c on the side surface of the holder 4 to expose the operation portion 5c. The operation unit 5c is formed with a non-slip unevenness 5c 1 and a protrusion 5c 2 for facilitating a pushing operation.
スライダー５は、刃２に形成された被係止部２ａに係止する係止部５ｄを備えている。刃２の被係止部２ａは図示例では円形の通孔であり、係止部５ｄは前記通孔に挿通可能な円柱状の突起である。 The slider 5 includes a locking portion 5d that locks to the locked portion 2a formed on the blade 2. The locked portion 2a of the blade 2 is a circular through hole in the illustrated example, and the locking portion 5d is a columnar protrusion that can be inserted into the through hole.
図示例において、係止部５ｄは載置片５ａに設けられている。係止部５ｄに刃２の被係止部２ａを係止させて載置片５ａに刃２を置き、カバー片５ｂを閉じることにより、刃２の一部（２ｃ１）が露出し、その露出部分がカッティングに供される。カバー片５ｂには、係止部５ｄが嵌入される嵌入凹部５ｂ１が形成されている。 In the illustrated example, the locking portion 5d is provided on the mounting piece 5a. By locking the locked portion 2a of the blade 2 to the locking portion 5d, placing the blade 2 on the mounting piece 5a, and closing the cover piece 5b, a part (2c 1 ) of the blade 2 is exposed. The exposed part is used for cutting. The cover piece 5b is formed with a fitting recess 5b 1 into which the locking portion 5d is fitted.
図８に示されているように、刃２には切欠き２ｂ１、２ｂ２が形成されている。図示しない他の実施形態においては、切欠き２ｂ１、２ｂ２は被係止部として用いられ、切欠き２ｂ１、２ｂ２に適合する形状の係止部がスライダーに設けられる。切欠き２ｂ１、２ｂ２と通孔の両方を被係止部とすることもできる。 As shown in FIG. 8, notches 2b 1 and 2b 2 are formed in the blade 2. In other embodiments (not shown), the notches 2b 1 and 2b 2 are used as locked portions, and the slider is provided with locking portions having a shape compatible with the notches 2b 1 and 2b 2 . Both the notches 2b 1 , 2b 2 and the through hole can be used as locked portions.
スライダー５をホルダー４の本体４ａから引き出した後、カバー片５ｂを開方向に回動させ、載置片５ａ上の刃２を取り出して新し刃に交換し、或いは、載置片５ａ上で刃２を前後方向（図８の矢印ＦＲ）で反転させて再セットすることにより、使用済みの刃先２ｃ１に代えて未使用の刃先２ｃ２を利用することができる。 After pulling out the slider 5 from the main body 4a of the holder 4, the cover piece 5b is rotated in the opening direction, and the blade 2 on the mounting piece 5a is taken out and replaced with a new blade, or on the mounting piece 5a. By reversing and resetting the blade 2 in the front-rear direction (arrow FR in FIG. 8), an unused blade edge 2c 2 can be used instead of the used blade edge 2c 1 .
スライダー５は、図９〜図１１を参照して、係止部５ｄで係止した刃２の切刃２ｄの少なくとも一部を両側から挟持する一対の挟持部７ａ、７ｂを備えている。図示例において、一方の挟持部７ａは載置片５ａに設けられ、他方の挟持部７ｂは、カバー片５ｂに設けられている。挟持部７ａ、７ｂは、載置片５ａ及びカバー片５ｂの其々の内面の凸部によって形成されている。 The slider 5 includes a pair of holding portions 7a and 7b that hold at least a part of the cutting blade 2d of the blade 2 locked by the locking portion 5d from both sides with reference to FIGS. 9 to 11. In the illustrated example, one holding portion 7a is provided on the mounting piece 5a, and the other holding portion 7b is provided on the cover piece 5b. The sandwiching portions 7a and 7b are formed by convex portions on the inner surfaces of the mounting piece 5a and the cover piece 5b, respectively.
互いに対向配置される一対の挟持部７ａ、７ｂは、図１０、図１１に拡大断面図で示すように、刃２の切刃２ｄ、２ｄに沿って当接するテーパー面を備えている。切刃２ｄ、２ｄは、刃先２ｃから所定の幅を有するテーパー状の砥面によって形成されている。テーパー状の切刃２ｄ、２ｄを挟持部７ａ、７ｂのテーパー面によって挟持することにより、刃先２ｃのカット方向（図１０の矢印Ｃ方向）への動きを阻止することができる。挟持部７ａ、７ｂが刃先２ｃに当たらないように、挟持部７ａ、７ｂのテーパー面は、刃２の刃先２ｃから所定距離ｄを離間して切刃２ｄに当接する。 As shown in the enlarged cross-sectional views of FIGS. 10 and 11, the pair of holding portions 7a and 7b arranged to face each other are provided with tapered surfaces that abut along the cutting blades 2d and 2d of the blade 2. The cutting edges 2d and 2d are formed by a tapered abrasive surface having a predetermined width from the cutting edge 2c. By sandwiching the tapered cutting edges 2d and 2d by the tapered surfaces of the sandwiching portions 7a and 7b, it is possible to prevent the cutting edge 2c from moving in the cutting direction (arrow C direction in FIG. 10). The tapered surface of the sandwiching portions 7a and 7b abuts on the cutting edge 2d at a predetermined distance d from the cutting edge 2c of the blade 2 so that the sandwiching portions 7a and 7b do not hit the cutting edge 2c.
挟持部７ａ、７ｂが切刃２ｄに当接するテーパー面を備え、そのテーパー面で切刃２ｄ、２ｄを受けることにより、刃２をしっかりと挟持することができる。刃２の両面の切刃２ｄ、２ｄをしっかりと挟持することにより、カッティング時に切っている物から刃２が受ける抗力によって係止部５ｄを中心とする回転力Ｒ（図７参照）が刃２に作用しても、刃２の刃先２ｃがホルダー４の内面（本実施形態では、カバー片５ｂのフランジ部分５ｂ２）に衝突することを防ぐことができる。載置片５ａとカバー片５ｂとによって覆われている部分の刃２の刃先２ｃ２を鋭利に保つことができるので、刃２を反転して再セットした際に、切れ味が鈍っていない刃先２ｃ２を利用することができる。 The sandwiching portions 7a and 7b are provided with a tapered surface in contact with the cutting edge 2d, and the blade 2 can be firmly sandwiched by receiving the cutting edge 2d and 2d on the tapered surface. By firmly sandwiching the cutting blades 2d and 2d on both sides of the blade 2, the rotational force R (see FIG. 7) centered on the locking portion 5d is generated by the drag force received by the blade 2 from the object being cut during cutting. It is possible to prevent the cutting edge 2c of the blade 2 from colliding with the inner surface of the holder 4 (in the present embodiment, the flange portion 5b 2 of the cover piece 5b). Since the cutting edge 2c 2 of the blade 2 in the portion covered by the mounting piece 5a and the cover piece 5b can be kept sharp, the cutting edge 2c whose sharpness is not dull when the blade 2 is inverted and reset. 2 can be used.
図示しないが、被係止部が切欠き２ｂ（図８）であって、係止部が切欠き２ｂに適合する形状の他の実施形態においても、挟持部７ａ、７ｂは、カッティング時に刃２の切刃２ｄを挟持して、刃先２がホルダー４の内面等に当たるのを防ぎ、カバー片５ｂによって覆われている側の刃先２ｃを鋭利に保つことができる。 Although not shown, in another embodiment in which the locked portion has a notch 2b (FIG. 8) and the locking portion has a shape that fits the notch 2b, the sandwiching portions 7a and 7b have a blade 2 at the time of cutting. By sandwiching the cutting edge 2d of the above, the cutting edge 2 can be prevented from hitting the inner surface of the holder 4, and the cutting edge 2c on the side covered by the cover piece 5b can be kept sharp.
挟持部７ａ、７ｂへの挟持力は、操作部５ｃを押さえつけることにより得られ得る。具体的には、操作部５ｃに親指を当て、操作部５ｃの裏側のホルダー４の側面に人差し指を当てて、親指と人差し指とで挟む力を付与すれば、一対の挟持部７ａ、７ｂが互い接近する方向に押されることにより挟持部７ａ、７ｂに挟持力が付与され、刃２の切刃２ｄ、２ｄを挟持することができる。このとき、載置片５ａは、カバー片５ｂに押されて、ホルダー４の内面に押しつけられる。 The holding force on the holding portions 7a and 7b can be obtained by pressing the operating portion 5c. Specifically, if the thumb is placed on the operating portion 5c and the index finger is placed on the side surface of the holder 4 on the back side of the operating portion 5c to apply a force to pinch the thumb and the index finger, the pair of holding portions 7a and 7b can be attached to each other. By being pushed in the approaching direction, a holding force is applied to the holding portions 7a and 7b, and the cutting blades 2d and 2d of the blade 2 can be held. At this time, the mounting piece 5a is pushed by the cover piece 5b and pressed against the inner surface of the holder 4.
本実形態においては、載置片５ａに載せる刃２の配置を左右反転させることにより、右利き用と左利き用とに切り換えることができる。また、刃２の左右反転位置において刃２の切刃２ｄを挟持するための挟持部７ｃ、７ｄ（図８）が設けられている。 In the present embodiment, the arrangement of the blade 2 placed on the mounting piece 5a can be reversed left and right to switch between right-handed and left-handed. Further, holding portions 7c and 7d (FIG. 8) for holding the cutting blade 2d of the blade 2 at the left-right inverted position of the blade 2 are provided.
また、載置片５ａ及びカバー片５ｂは、図５を参照して、先端へ向かうに従い薄肉となる傾斜面５ａ１、５ｂ３を外側面に備えている。そして、ホルダー４は、一対の挟持部７ａ、７ｂが互いに接近する方向に傾斜面５ａ１、５ｂ３を案内するように、出入口３に向けて間隔が狭まる傾斜案内面４ｄ、４ｅを内側面に備えている。傾斜面５ａ１、５ｂ３と傾斜案内面４ｄ、４ｅとの作用により、スライダー５を出入口３の方へ押し進めると、楔を打ち込むようにして、載置片５ａとカバー片５ｂとが傾斜案内面４ｄ、４ｅに押圧されることにより、挟持部７ａ、７ｂに挟持力を付与することができる。 Further, the mounting piece 5a and the cover piece 5b are provided with inclined surfaces 5a 1 , 5b 3 on the outer surface, which become thinner toward the tip, with reference to FIG. Then, the holder 4 has inclined guide surfaces 4d and 4e whose intervals are narrowed toward the entrance / exit 3 so as to guide the inclined surfaces 5a 1 , 5b 3 in the direction in which the pair of holding portions 7a and 7b approach each other. I have. When the slider 5 is pushed toward the doorway 3 by the action of the inclined surfaces 5a 1 , 5b 3 and the inclined guide surfaces 4d and 4e, the mounting piece 5a and the cover piece 5b are driven into the inclined guide surface so as to drive a wedge. By being pressed by 4d and 4e, the holding force can be applied to the holding portions 7a and 7b.
ホルダー４は、操作部５ｃが露出する側と反対側の面の先端部に、滑り止め用の凹凸４ｆ（図５）が形成されている。凹凸４ｆは、ホルダー４を持つ人差し指に滑り止めとして作用し、スライダー５を傾斜案内面４ｄ、４ｅからの抵抗に抗して操作部５ｃを押し進めやすくなる。 The holder 4 has a non-slip unevenness 4f (FIG. 5) formed at the tip of the surface opposite to the side where the operation portion 5c is exposed. The unevenness 4f acts as a non-slip on the index finger holding the holder 4, and makes it easier for the slider 5 to push the operating portion 5c against the resistance from the inclined guide surfaces 4d and 4e.
本発明は、上記実施形態に限らず、本発明の趣旨を逸脱しない範囲において種々の変更が可能である。上記実施形態のインサート部材４ｂに代えて、ホルダーの内部からスライダーを取り出せる他の形態、例えば、ホルダーを縦割り分割可能に構成することもできる。また、上記実施形態ではスライダーをホルダーの側面に設けたが、スライダーをホルダーの上面に設けることも可能である。また、上記実施形態の弾性部材を備えないカッターナイフとすることも可能である。 The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. Instead of the insert member 4b of the above embodiment, another form in which the slider can be taken out from the inside of the holder, for example, the holder can be vertically divided and divided. Further, although the slider is provided on the side surface of the holder in the above embodiment, the slider can be provided on the upper surface of the holder. It is also possible to use a cutter knife that does not have the elastic member of the above embodiment.
１ カッターナイフ
２ 刃
２ｃ 刃先
２ｄ 切刃
３ 出入口
４ ホルダー
４ａ 本体
４ｂ インサート部材
４ｂ１１，４ｂ１２ 円弧状周面
４ｂ１３，４ｂ１４ 平行部
４ｃ スリット
４ｆ 凹凸
５ スライダー
５ａ 載置片
５ｂ カバー片
５ｃ 操作部
７ａ、７ｂ、７ｃ、７ｄ 挟持部
1 Cutter knife 2 Blade 2c Cutting edge 2d Cutting edge 3 Doorway 4 Holder 4a Main body 4b Insert member 4b 11 , 4b 12 Arc-shaped peripheral surface 4b 13 , 4b 14 Parallel part 4c Slit 4f Concavo-convex 5 Slider 5a Mounting piece 5b Cover piece 5c Operation Part 7a, 7b, 7c, 7d Holding part
Claims (7)
前記ホルダー内に摺動自在に装着され、刃を交換可能に保持するスライダーと、
前記スライダーは、刃に形成された被係止部に係止する係止部と、前記係止部で係止した刃の切刃の少なくとも一部を両側から挟持する一対の挟持部とを備える、カッターナイフ。 A holder with a blade doorway and
A slider that is slidably mounted in the holder and holds the blade interchangeably.
The slider includes a locking portion that engages with a locked portion formed on the blade, and a pair of sandwiching portions that sandwich at least a part of the cutting edge of the blade locked by the locking portion from both sides. ,cutter knife.
前記載置片及び前記カバー片の其々の内側面に前記挟持部が設けられ、
前記載置片及び前記カバー片の一方又は双方は、先端に向かうに従い薄肉となる傾斜面を外側面に備え、
前記ホルダーは、前記一対の挟持部が互いに接近する方向に前記傾斜面を案内するように、前記出入口に向けて間隔が狭まる傾斜案内面を内側面に備える、請求項１に記載のカッターナイフ。 The slider includes a mounting piece on which the blade is mounted and a cover piece that covers the above-mentioned mounting piece so as to be openable and closable.
The holding portion is provided on the inner side surface of each of the above-mentioned placing piece and the cover piece.
One or both of the above-mentioned placing piece and the cover piece is provided with an inclined surface on the outer surface, which becomes thinner toward the tip.
The cutter knife according to claim 1, wherein the holder is provided with an inclined guide surface whose inner surface is narrowed toward the doorway so that the pair of holding portions guide the inclined surface in a direction in which the pair of holding portions approach each other.
前記ホルダーは、前記操作部を露出させるスリットを備え、
前記操作部を押し操作することにより、前記一対の挟持部が互いに接近する方向に押されるように構成されている、請求項１に記載のカッターナイフ。 The slider is provided with an operation unit for pushing and operating the slider on the outer surface of the cover piece.
The holder includes a slit that exposes the operating portion.
The cutter knife according to claim 1, wherein the pair of holding portions are pushed in a direction approaching each other by pushing the operating portion.
前記ホルダーは、前記スリットに円弧状凹部を備え、
前記インサート部材は、前記ホルダーに前記インサート部材を固定するための回転式ツマミを備え、
前記回転式ツマミは、前記円弧状凹部に係合可能な円弧状周面と、前記本体から前記インサート部材を引き抜き可能とする平行部と、を有する、請求項１に記載のカッターナイフ。
The holder comprises a sheath-shaped body and an insert member that is connected to the slider and is inserted from the rear of the body and fixed removably.
The holder has an arcuate recess in the slit.
The insert member includes a rotary knob for fixing the insert member to the holder.
The cutter knife according to claim 1, wherein the rotary knob has an arc-shaped peripheral surface that can engage with the arc-shaped recess and a parallel portion that allows the insert member to be pulled out from the main body.
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| JP2019117939 | 2019-06-25 | ||
| JP2019117939 | 2019-06-25 |
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| JP2021003553A5 JP2021003553A5 (en) | 2021-03-18 |
| JP7023468B2 JP7023468B2 (en) | 2022-02-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48100500U (en) * | 1972-02-28 | 1973-11-27 | ||
| JPS5237300A (en) * | 1975-09-19 | 1977-03-23 | Shiyouhachi Himeno | Extention type knife |
| JPS55153059U (en) * | 1979-04-23 | 1980-11-05 | ||
| JPH0259771U (en) * | 1988-10-26 | 1990-05-01 | ||
| JP2011167293A (en) * | 2010-02-17 | 2011-09-01 | Kai R & D Center Co Ltd | Handle of manual sharp-edged tool |
-
2020
- 2020-06-19 JP JP2020106507A patent/JP7023468B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48100500U (en) * | 1972-02-28 | 1973-11-27 | ||
| JPS5237300A (en) * | 1975-09-19 | 1977-03-23 | Shiyouhachi Himeno | Extention type knife |
| JPS55153059U (en) * | 1979-04-23 | 1980-11-05 | ||
| JPH0259771U (en) * | 1988-10-26 | 1990-05-01 | ||
| JP2011167293A (en) * | 2010-02-17 | 2011-09-01 | Kai R & D Center Co Ltd | Handle of manual sharp-edged tool |
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| JP7023468B2 (en) | 2022-02-22 |
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