JP4171645B2 - Replaceable blade cutter knife - Google Patents

Replaceable blade cutter knife Download PDF

Info

Publication number
JP4171645B2
JP4171645B2 JP2002370280A JP2002370280A JP4171645B2 JP 4171645 B2 JP4171645 B2 JP 4171645B2 JP 2002370280 A JP2002370280 A JP 2002370280A JP 2002370280 A JP2002370280 A JP 2002370280A JP 4171645 B2 JP4171645 B2 JP 4171645B2
Authority
JP
Japan
Prior art keywords
slider
handle
locking spring
respect
grip handle
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 - Fee Related
Application number
JP2002370280A
Other languages
Japanese (ja)
Other versions
JP2004195093A (en
JP2004195093A5 (en
Inventor
明宗 沼田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kaijirushi Hamono Center KK
Original Assignee
Kaijirushi Hamono Center KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kaijirushi Hamono Center KK filed Critical Kaijirushi Hamono Center KK
Priority to JP2002370280A priority Critical patent/JP4171645B2/en
Publication of JP2004195093A publication Critical patent/JP2004195093A/en
Publication of JP2004195093A5 publication Critical patent/JP2004195093A5/ja
Application granted granted Critical
Publication of JP4171645B2 publication Critical patent/JP4171645B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Knives (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、把持柄に対しスライダを刃体とともに移動可能に支持した替刃式カッターナイフに関するものである。
【0002】
【従来の技術】
図14(a)に示す従来の替刃式カッターナイフ(下記の特許文献1及び特許文献2を参照)は、係止ばね21を有するスライダ18と、このスライダ18に対し着脱可能に連結される刃体26と、このスライダ18を刃体26とともに移動可能に支持する把持柄1とを備えている。この把持柄1にはスライダ18の移動方向Xに沿って複数の凹部13,16と凸部17とを交互に並設した案内縁部11が形成されている。このスライダ18の係止ばね21に形成された係合突部23がスライダ18の移動操作に伴い前記把持柄1の案内縁部11に係合されて刃体26が把持柄1の頭口部5から突出可能になっている。スライダ18をスライダ移動領域Pから刃体着脱領域Qまで移動操作すると、図13(a)(b)に示すように、スライダ18の係止ばね21の係合突部23がスライダ移動領域Pの凹部16から刃体着脱領域Qの凹部13に移って係合される。この刃体着脱領域Qでは、図14(b)(c)に示すように、スライダ18の係止突起19aを把持柄1の切欠部10に入り込ませてスライダ18を傾動させることができるため、スライダ18の支軸部25aが刃体26の支持孔26aから離間して刃体26をスライダ18に着脱することができる。
【0003】
【特許文献1】
特公昭59−6673号公報
【特許文献2】
実開昭56−82954号公報
【特許文献3】
特開昭60−236679号公報
【0004】
【発明が解決しようとする課題】
スライダ18の係止ばね21の係合突部23をスライダ移動領域Pの凹部16に係合して位置決めした状態でカッターナイフを使用する。その場合、把持柄1に対するスライダ18の移動を円滑に行うとともに、使用時の位置決め時に把持柄1に対しスライダ18が不用意に移動しないように、スライダ18の係止ばね21の係合突部23をスライダ移動領域Pの凹部16に対し係止ばね21の適度な弾性力で圧接させる必要がある。しかし、刃体着脱領域Qでは、凹部13に対する係合突部23の圧接力が強過ぎると、スライダ18を板ばね35の弾性力に抗して傾動させた後にこのスライダ18を離しても、この板ばね35の弾性力がスライダ18に対し十分に働かず、スライダ18が傾動前の状態に復帰しなくなるおそれがあった。従って、把持柄1に対するスライダ18の操作性が悪くなって使い勝手が悪くなっていた。
【0005】
また、刃体26を把持柄1に収納した不使用状態でスライダ18の係止ばね21の係合突部23をスライダ移動領域Pの凹部16に係合して位置決めした場合、この凹部16に対する係合突部23の圧接力が弱過ぎると、不使用時の位置決め時に把持柄1に対しスライダ18が不用意に移動するおそれがあった。従って、把持柄1に対するスライダ18の操作性が悪くなって使い勝手が悪くなっていた。
【0006】
さらに、上記の特許文献3に示すように、把持柄の尻部側(頭口部に対する反対側)からスライダを刃体とともに着脱してスライダに対し刃体を交換するカッターナイフの場合、スライダの係止ばねの係合突部がスライダ移動領域の凹部から離脱すると、スライダの移動抵抗力が急に弱くなる。そのため、スライダが把持柄から不用意に抜け落ちるおそれがあった。従って、把持柄に対するスライダの操作性が悪くなって使い勝手が悪くなっていた。
【0007】
この発明は、把持柄に対するスライダの操作性を向上させて使い勝手を良くすることを目的としている。
【0008】
【課題を解決するための手段及び発明の効果】
後記実施形態(図1,2,3に示す第一実施形態、図4に示す第一実施形態の別例、図5及び図6(a)に示す第二実施形態、図6(b)に示す第二実施形態の別例、図7及び図8(a)に示す第三実施形態、図8(b)に示す第三実施形態の別例、図9,10に示す第四実施形態、図11に示す第五実施形態)中、特に第一実施形態及びその別例と第二実施形態及びその別例と第四実施形態の図面の符号を援用して本発明を説明する。
【0009】
請求項1〜3の発明
請求項1の発明に係る替刃式カッターナイフは、第一実施形態に対応し、また、請求項2の発明に係る替刃式カッターナイフは、第一実施形態の別例に対応し、いずれも下記の共通構成を有している。
【0010】
この替刃式カッターナイフは、係止ばね(21)を有するスライダ(18)と、このスライダ(18)に対し着脱可能に連結される刃体(26)と、このスライダ(18)を刃体(26)とともに移動可能に支持する把持柄(1)とを備えている。この把持柄(1)にはスライダ(18)の移動方向(前後方向X)に沿って複数の凹部(13,16)と凸部(12,15,17)とを交互に並設した案内部(案内縁部11)を形成している。このスライダ(18)の係止ばね(21)に形成した係合突部(23)をスライダ(18)の移動操作に伴い前記把持柄(1)の案内部(11)に係合して刃体(26)を把持柄(1)の口部(5)から突出可能としている。
【0011】
前記スライダ(18)を把持柄(1)に対し保持するとともに把持柄(1)に対するスライダ(18)の移動を許容するスライダ移動領域(P)と、このスライダ(18)を把持柄(1)に対し保持するとともに刃体(26)をスライダ(18)に対し着脱する刃体着脱領域(Q)とを有している。例えば、この刃体着脱領域(Q)は把持柄(1)において口部(5)側にある。また、例えば、この刃体着脱領域(Q)で、スライダ(18)は、刃体交換不能位置(E)と刃体交換可能位置(F)との間で往復動し、ばね(板ばね35)の弾性力に抗して刃体交換不能位置(E)から刃体交換可能位置(F)になるとともに、ばね(35)の弾性力により刃体交換可能位置(F)から刃体交換不能位置(E)になる。
【0012】
前記スライダ(18)の係止ばね(21)の係合突部(23)が前記把持柄(1)の案内部(11)に係合された係合状態でこの案内部(11)に対するこの係止ばね(21)の係合突部(23)の反発力(係止ばねが案内部を押さえた場合に係止ばねに生じる力)については、把持柄(1)の案内部(11)の形態が前記スライダ移動領域(P)と前記刃体着脱領域(Q)とで互いに異なるようにしてこのスライダ移動領域(P)の反発力よりもこの刃体着脱領域(Q)の反発力が小さくなるように設定した反発力変更手段を備えている。その場合、反発力は生じている状態も生じていない状態もあり、一方の反発力よりも他方の反発力が小さくなるとは両反発力の大小の比較を意味する。
さらに、請求項1の発明は下記のように構成されている。
前記反発力変更手段は前記把持柄(1)の案内部(11)の形態を変更したものである。この把持柄(1)の案内部(11)の凹部(13,16)は、前記係止ばね(21)の係合突部(23)が係合される開口部(27)においてスライダ(18)の移動方向(X)で互いに対向する両端部(28)と、その開口部(27)に面する内面部(29)とを有している。この両端部(28)間の間隔については前記スライダ移動領域(P)の間隔(WP)よりも前記刃体着脱領域(Q)の間隔(WQ)を大きく設定している。この係止ばね(21)の係合突部(23)は、前記係合状態で、前記凹部(13,16)の両端部(28)に面する両側係合面(33)と、前記凹部(13,16)の内面部(29)に面する先端係合面(34)とを有している。例えば、請求項3の発明以外に、刃体着脱領域(Q)で係止ばね(21)の係合突部(23)を把持柄(1)の凹部(13,16)に接触させてもよい。その場合、反発力は生じている状態も生じていない状態もあり得る。
さらに、請求項2の発明は下記のように構成されている。
前記反発力変更手段は前記把持柄(1)の案内部(11)の形態を変更したものである。この把持柄(1)の案内部(11)の凹部(13,16)は、前記係止ばね(21)の係合突部(23)が係合される開口部(27)においてスライダ(18)の移動方向(X)で互いに対向する両端部(28)と、その開口部(27)に面する内面部(29)とを有している。この開口部(27)から内面部(29)までの深さについては前記スライダ移動領域(P)の深さ(DP)よりも前記刃体着脱領域(Q)の深さ(DQ)を大きく設定している。この係止ばね(21)の係合突部(23)は、前記係合状態で、前記凹部(13,16)の両端部(28)に面する両側係合面(33)と、前記凹部(13,16)の内面部(29)に面する先端係合面(34)とを有している。ちなみに、上記深さとは、係止ばね(21)の係合突部(23)が凹部(13,16)の内面部(29)に当接した状態で開口部(27)からその当接部(30a)までの距離をいい、凹部(13,16)がその当接部(30a)よりも深く掘り下げられていても、その掘下部分は係合突部(23)の動きに何ら機能しないので、その掘下部分が形成された形状と形成されていない形状とは同等である。例えば、請求項3の発明以外に、刃体着脱領域(Q)で係止ばね(21)の係合突部(23)を把持柄(1)の凹部(13,16)に接触させてもよい。その場合、反発力は生じている状態も生じていない状態もあり得る。
【0013】
請求項1の発明及び請求項2の発明では、スライダ移動領域(P)で凹部(16)に対する係合突部(23)の圧接力が適度になるように設定して、使用時に把持柄(1)に対するスライダ(18)の移動を円滑に行い得るとともに、使用中の位置決め時に把持柄(1)に対しスライダ(18)が不用意に移動しないようにした場合でも、刃体着脱領域(Q)で凹部(13)に対する係合突部(23)の圧接力が弱くなるので、刃体(26)の交換時にスライダ(18)を円滑に動かすことができる。従って、把持柄(1)に対するスライダ(18)の操作性を向上させて使い勝手を良くすることができる。
【0016】
さらに、請求項1の発明では、把持柄(1)の案内部(11)の凹部(13,16)において開口部(27)の両端部(28)間の間隔(WP,WQ)を変更するだけの簡単な手段により、刃体着脱領域(Q)で凹部(13)に対する係合突部(23)の圧接力を弱くすることができる。
【0019】
さらに、請求項2の発明では、把持柄(1)の案内部(11)の凹部(13,16)において開口部(27)から内面部(29)までの深さ(DP,DQ)を変更するだけの簡単な手段により、刃体着脱領域(Q)で凹部(13)に対する係合突部(23)の圧接力を弱くすることができる。
【0020】
請求項3の発明は、請求項1または請求項2の発明を前提として下記のように構成されている。
【0021】
前記刃体着脱領域(Q)では係止ばね(21)の係合突部(23)が把持柄(1)の凹部(13)に対し遊嵌されて前記反発力が生じていない状態にある。ちなみに、遊嵌とは、係止ばね(21)に反発力が生じていない状態で、係合突部(23)が凹部(13)に対し隙間を持つ状態を取り得ることをいう。
【0022】
請求項3の発明では、刃体着脱領域(Q)で凹部(13)に対する係合突部(23)の圧接力を確実に弱くすることができる。
請求項4〜5の発明
請求項4の発明にかかる替刃式カッターナイフは、第二実施形態と第四実施形態とに対応し、また、請求項5の発明にかかる替刃式カッターナイフは、第二実施形態の別例に対応し、いずれも下記の共通構成を有している。
【0023】
この替刃式カッターナイフは、係止ばね(21)を有するスライダ(18)と、このスライダ(18)に対し着脱可能に連結される刃体(26)と、このスライダ(18)を刃体(26)とともに移動可能に支持する把持柄(1)とを備えている。この把持柄(1)にはスライダ(18)の移動方向(前後方向X)に沿って複数の凹部(13,16)と凸部(12,15,17)とを交互に並設した案内部(案内縁部11)を形成している。このスライダ(18)の係止ばね(21)に形成した係合突部(23)をスライダ(18)の移動操作に伴い前記把持柄(1)の案内部(11)に係合して刃体(26)を把持柄(1)の口部(5)から突出可能としている。
【0024】
前記スライダ(18)を把持柄(1)に対し保持するとともに把持柄(1)に対するスライダ(18)の移動を許容するスライダ移動領域(P)と、このスライダ(18)を把持柄(1)に対し保持するとともに把持柄(1)に対するスライダ(18)の移動を規制するスライダロック領域(R)とを有している。例えば、このスライダロック領域(R)は把持柄(1)において口部(5)に対し反対側である尻部(6)側にある。
【0025】
前記スライダ(18)の係止ばね(21)の係合突部(23)が前記把持柄(1)の案内部(11)に係合された係合状態で前記把持柄(1)の案内部(11)に対するこの係止ばね(21)の係合突部(23)の移動抵抗力(把持柄に対するスライダの移動抵抗力)については、把持柄(1)の案内部(11)の形態が前記スライダ移動領域(P)と前記スライダロック領域(R)とで互いに異なるようにしてこのスライダ移動領域(P)の移動抵抗力よりもこのスライダロック領域(R)の移動抵抗力が大きくなるように設定した移動抵抗力変更手段を備えている。
さらに、請求項4の発明は下記のように構成されている。
前記移動抵抗力変更手段は前記把持柄(1)の案内部(11)の形態を変更したものである。前記把持柄(1)の案内部(11)の凹部(13,16)は、前記係止ばね(21)の係合突部(23)が係合される開口部(27)においてスライダ(18)の移動方向(X)で互いに対向する両端部(28)と、その開口部(27)に面する内面部(29)とを有している。この把持柄(1)の案内部(11)の凸部(12,15,17)はその案内部(11)の凹部(13,16)の開口部(27)に隣接する頂部(32a)を有している。この開口部(27)から頂部(32a)までの高さについては前記スライダ移動領域(P)の高さ(HP)よりも前記スライダロック領域(R)の高さ(HR)を大きく設定している。この係止ばね(21)の係合突部(23)は、前記係合状態で、前記凹部(13,16)の両端部(28)に面する両側係合面(33)と、前記凹部(13,16)の内面部(29)に面する先端係合面(34)とを有している。
さらに、請求項5の発明は下記のように構成されている。
前記移動抵抗力変更手段は前記把持柄(1)の案内部(11)の形態を変更したものである。この把持柄(1)の案内部(11)の凹部(13,16)は、前記係止ばね(21)の係合突部(23)が係合される開口部(27)においてスライダ(18)の移動方向(X)で互いに対向する両端部(28)と、その開口部(27)に面する内面部(29)とを有している。この開口部(27)の両端部(28)とこの内面部(29)の底面(30)との間の内面部(29)の側面(31)がスライダ(18)の移動方向(X)に対しなす角度については前記スライダ移動領域(P)の角度(θP)よりも前記スライダロック領域(R)の角度(θR)を大きく設定している。この係止ばね(21)の係合突部(23)は、前記係合状態で、前記凹部(13,16)の両端部(28)に面する両側係合面(33)と、前記凹部(13,16)の内面部(29)に面する先端係合面(34)とを有している。
【0026】
請求項4の発明及び請求項5の発明では、スライダ移動領域(P)で案内部(11)に対する係合突部(23)の移動抵抗力が適度になるように設定して、使用時に把持柄(1)に対するスライダ(18)の移動を円滑に行い得るようにした場合でも、スライダロック領域(R)では案内部(11)に対する係合突部(23)の移動抵抗力が強くなるので、不使用時に把持柄(1)に対しスライダ(18)が不用意に移動することを防止することができる。従って、把持柄(1)に対するスライダ(18)の操作性を向上させて使い勝手を良くすることができる。
【0029】
さらに、請求項4の発明では、把持柄(1)の案内部(11)の凸部(12,15,17)においてその高さ(HP,HQ)を変更するだけの簡単な手段により、スライダロック領域(R)で案内部(11)に対する凸部(12,15,17)の移動抵抗力を強くすることができる。
【0032】
さらに、請求項5の発明では、把持柄(1)の案内部(11)の凹部(13,16)において内面部(29)の側面(34)の角度(θP,θR)を変更するだけの簡単な手段により、スライダロック領域(R)で案内部(11)に対する係合突部(23)の移動抵抗力を強くすることができる。
【0038】
第6の発明
この発明は、請求項3の発明を前提として下記のように構成されている。
【0039】
前記スライダ移動領域(P)では、係止ばね(21)の係合突部(23)の両側係合面(33)が把持柄(1)における凹部(13,16)の開口部(27)の両端部(28)に対し圧接されて前記反発力が生じている状態にある。
【0040】
第7の発明
この発明は、請求項1から請求項3のうちいずれかの請求項の発明、または第6の発明を前提として下記のように構成されている。
【0041】
前記スライダ(18)の係止ばね(21)は板ばねであり、この板ばね(21)はその両端部(22a)で支持されてこの両端部(22a)間で前記係合突部(23)を有している。例えば、この板ばね(21)の両端部(22a)のうち少なくとも一方は移動可能な支点になっている。
【0050】
【発明の実施の形態】
〔第一実施形態〕
まず、本発明の第一実施形態にかかる替刃式カッターナイフについて図1,2,3を参照して説明する。
【0051】
把持柄1は、金属製のスライダ支持部2と、このスライダ支持部2の外側に取着されたプラスチック製の握り部3とからなる。このスライダ支持部2の表側には摺動溝4がその長手方向(前後方向X)へ延びるように形成されている。この摺動溝4においては、スライダ支持部2の前端部に頭口部5が形成されているとともに、スライダ支持部2の後端部に形成された尻部6で握り部3により閉塞され、スライダ支持部2の表側で相対向する上下両案内壁部7,8間に案内孔9が頭口部5から尻部6に渡り前後方向Xへ延びるように形成されている。この上下両案内壁部7,8には頭口部5の付近で切欠部10が相対向して形成されている。下案内壁部8にはこの切欠部10と尻部6との間に渡り案内縁部11(案内部)が上案内壁部7に対向して前後方向Xへ延設されている。この案内縁部11は、切欠部10から尻部6側へ延びる一つの頭側長凸部12と、この頭側長凸部12から連続する一つの拡大凹部13と、この拡大凹部13から連続する多数の凹凸部14と、尻部6でこの凹凸部14から連続する一つの尻側長凸部15とを有している。この凹凸部14では、凹部16と凸部17とが交互に並設され、前端凸部17が前記拡大凹部13から連続しているとともに、後端凹部16が前記尻側長凸部15に連続している。
【0052】
スライダ18は、金属製のスライダ本体19と、このスライダ本体19の表側に取着されたプラスチック製の操作摘み20とからなり、前記把持柄1の摺動溝4に嵌め込まれている。このスライダ本体19内には係止ばね21(板ばね)が嵌め込まれている。この係止ばね21は、U状に折曲され、両腕部22と、それらの間で湾曲された係合突部23とからなる。この両腕部22の端部22aは共に前後方向Xへ移動し得るようにばね支持部24で支持されている。この両腕部22間の係合突部23は前記把持柄1の案内縁部11に向けてスライダ本体19内から突出している。このスライダ本体19の前側には支軸部25aを有する刃体支持板部25が突設されている。
【0053】
刃体26は、その基端部に支持孔26aを有し、その基端部側が把持柄1で頭口部5から摺動溝4に挿入されてスライダ本体19の刃体支持板部25に載せられ、この刃体支持板部25の支軸部25aにこの支持孔26aが挿嵌されて、スライダ18に対し着脱可能に連結される。把持柄1に対しスライダ18を前後方向Xへ移動させると、スライダ18の係止ばね21の係合突部23が把持柄1の案内縁部11に係合し、刃体26がスライダ18とともに移動して、把持柄1の頭口部5から突出するとともに把持柄1の摺動溝4内に収納される。
【0054】
前記把持柄1の案内縁部11において一つの拡大凹部13と凹凸部14の各凹部16とは、前記係止ばね21の係合突部23が係合される開口部27においてスライダ18の移動方向(前後方向X)で互いに対向する両端部28と、その開口部27に面する内面部29とを有している。この内面部29は、底面30と、この底面30と両端部28との間の両側面31とを有している。前記案内縁部11において一つの頭側長凸部12と凹凸部14の各凸部17と一つの尻側長凸部15とは、前記両端部28間で端縁32を有している。それらの各端縁32上にある頂部32aは、前後方向Xで前記各端部28を結ぶ直線28a上にある。前記係止ばね21の係合突部23は、前記各凹部13,16に係合される係合状態で、その各凹部13,16の両端部28に面する両側係合面33と、各凹部13,16の内面部29に面する先端係合面34とを有している。
【0055】
前記案内縁部11では、一つの拡大凹部13における両端部28間の間隔WQと、凹凸部14の各凹部16における両端部28間の間隔WPとを比較した場合、この間隔WPよりもこの間隔WQ(>WP)を大きく設定して、反発力変更手段としている。
【0056】
凹凸部14の凹部16に係止ばね21の係合突部23が係合された係合状態(スライダ移動領域P)では、この係合突部23の両側係合面33が凹部16の両端部28に圧接され、係止ばね21には弾性力により反発力が生じる。この拡大凹部13に係止ばね21の係合突部23が係合された係合状態(刃体着脱領域Q)では、係止ばね21に反発力が生じていない状態にあり、係合突部23が拡大凹部13に遊嵌されてこの係合突部23の両側係合面33及び先端係合面34と拡大凹部13の内面部29との間に隙間Gが生じ得る。ちなみに、この拡大凹部13に係止ばね21の係合突部23が係合されるとともにスライダ18が把持柄1のスライダ支持部2に当接して停止するため、この拡大凹部13に隣接する前記切欠部10には係止ばね21の係合突部23が係合されることはない。なお、このスライダ移動領域Pでは、刃体26の背部26bが係止ばね21の弾性力により摺動溝4の内面に圧接されるとともに、刃体26の刃先26cが摺動溝4の内面から離間して、刃体26のがたつきを防止している。また、この刃体着脱領域Qでは、刃体26の背部26bも摺動溝4の内面から離間するか、または、係止ばね21の弾性力が弱まって摺動溝4に対する圧接力が弱まり、刃体の交換が行い易くなる。
【0057】
図2(b)に示すように、刃体着脱領域Qで、スライダ18は刃体交換不能位置Eにある。摺動溝4内で把持柄1に取着された板ばね35の弾性力に抗してスライダ18を押すと、スライダ本体19に形成された両係止突起19aが把持柄1の両切欠部10に入り込んでスライダ18を傾動させることができ、図2(c)に示すようにスライダ18は刃体交換可能位置Fになる。そのため、スライダ本体19の支軸部25aが刃体26の支持孔26aから離間し、刃体26を把持柄1の頭口部5側からスライダ18に対し着脱することができる。この場合、前記反発力変更手段が機能し、スライダ18の係止ばね21の係合突部23が把持柄1の案内縁部11に係合された係合状態で、この案内縁部11に対するこの係止ばね21の係合突部23の反発力については、スライダ移動領域Pの反発力よりも刃体着脱領域Qの反発力が小さくなる。従って、刃体着脱領域Qでは、拡大凹部13に対する係合突部23の圧接力が弱くなり、スライダ18を板ばね35の弾性力に抗して傾動させた後にこのスライダ18を離すと、この板ばね35の弾性力がスライダ18に対し十分に働き、スライダ18は刃体交換可能位置Fから刃体交換不能位置Eに復帰する。
【0058】
〔図4に示す第一実施形態の別例〕
前記案内縁部11では、一つの拡大凹部13における開口部27から内面部29の底面30までの深さDQと、凹凸部14の各凹部16における開口部27から内面部29の底面30までの深さDPとを比較した場合、この深さDPよりもこの深さDQ(>DP)を大きく設定して、反発力変更手段としている。
【0059】
スライダ移動領域Pでは、係止ばね21の係合突部23の先端係合面34が凹部16の底面30の当接部30aに圧接され、係止ばね21には弾性力により反発力が生じる。刃体着脱領域Qでは、係止ばね21が伸びた状態で、係合突部23の先端係合面34が凹部16の底面30の当接部30aに圧接される。この案内縁部11に対するこの係止ばね21の係合突部23の反発力については、スライダ移動領域Pの反発力よりも刃体着脱領域Qの反発力が小さくなる。従って、刃体着脱領域Qでは、拡大凹部13に対する係合突部23の圧接力が弱くなる。
【0060】
〔第二実施形態〕
次に、本発明の第二実施形態にかかる替刃式カッターナイフについて第一実施形態との相違点を中心に図5及び図6(a)を参照して説明する。
【0061】
前記案内縁部11では、前記凹凸部14の各凸部17のうち前記尻側長凸部15に隣接する一つの後端凸部17の端縁32のみが他の凸部17の端縁32よりも突出して、突出部17aが形成されている。各凹部16の開口部27の端部28を結ぶ直線28aからこの突出部17aの端縁32の頂部32aまでの高さHRと、この直線28aから他の凸部17における端縁32の頂部32aまでの高さHPとを比較した場合、この高さHPよりもこの高さHR(>HP)を大きく設定して、移動抵抗力変更手段としている。
【0062】
前記凹凸部14の各凹部16のうち、前記後端凸部17と尻側長凸部15との間の後端凹部16(ロック凹部)に係止ばね21の係合突部23が係合された係合状態(スライダロック領域R)では、この係合突部23の両側係合面33のうち一方の側係合面33が後端凸部17の突出部17aに圧接される。そのため、このスライダロック領域Rでスライダ18を頭口部5側へ移動させる場合、他の凹部16に係止ばね21の係合突部23が係合された係合状態(スライダ移動領域P)でスライダ18を頭口部5側へ移動させる場合と比較して、移動抵抗力が大きくなる。従って、このスライダロック領域Rでは、把持柄1に対するスライダ18の移動を規制することができる。
【0063】
〔図6(b)に示す第二実施形態の別例〕
前記後端凹部16(ロック凹部)で両側面31がスライダ18の移動方向(前後方向X)対しなす角度θRと、他の凹部16で両側面31がこの移動方向(前後方向X)に対しなす角度θPとを比較した場合、この角度θPよりもこの角度θR(>θP)を大きく設定して、移動抵抗力変更手段としている。前記スライダロック領域Rにおける後端凹部16(ロック凹部)と、前記スライダ移動領域Pにおける他の凹部16では、図4に示す第一実施形態の別例と同様に、係止ばね21の係合突部23の先端係合面34が凹部16の底面30に圧接される。スライダロック領域Rでスライダ18を頭口部5側へ移動させる場合、この係合突部23の両側係合面33のうち一方の側係合面33が後端凹部16(ロック凹部)の側面31に圧接されるため、スライダ移動領域Pでスライダ18を頭口部5側へ移動させる場合と比較して、移動抵抗力が大きくなる。従って、このスライダロック領域Rでは、把持柄1に対するスライダ18の移動を規制することができる。
【0064】
〔第三実施形態〕
次に、本発明の第三実施形態にかかる替刃式カッターナイフについて第一実施形態との相違点を中心に図7及び図8(a)を参照して説明する。
【0065】
把持柄1において、前記第一実施形態の握り部3が省略され、スライダ支持部2がその握り部を兼用している。前記第一実施形態の刃体着脱領域Qが省略され、それに伴い、前記両切欠部10や板ばね35も省略されている。このスライダ支持部2の尻部6で摺動溝4が開放されて尻口部36が形成されている。この尻口部36からスライダ18を刃体26とともに着脱してスライダ18に対し刃体26を交換する。
【0066】
前記尻側長凸部15は、スライダ移動領域Pから連続して尻口部36に至るスライダ着脱準備領域Sにある。この尻側長凸部15の端縁32には尻口部36の付近で小突起37が形成されて移動抵抗変更手段になっている。このスライダ着脱準備領域Sは、前記後端凹部16からこの小突起37までの内側領域SIと、この小突起37から尻口部36までの外側領域SOとに分かれている。
【0067】
この内側領域SIでは、係止ばね21の係合突部23がスライダ移動領域Pの後端凹部16から離れ、この係合突部23の先端係合面34が尻側長凸部15の端縁32に圧接される。そのため、この内側領域SIでスライダ18を尻口部36側へ移動させる場合、スライダ移動領域Pでスライダ18を尻口部36側へ移動させる場合よりも、移動抵抗力が小さくなる。この外側領域SOでスライダ18を尻口部36側へ移動させると、係合突部23の先端係合面34が小突起37に当接した後にその小突起37を乗り越えて移動するため、内側領域SIでスライダ18を尻口部36側へ移動させる場合よりも、移動抵抗力が大きくなる。なお、外側領域SOでの移動抵抗力はスライダ移動領域Pでの移動抵抗力よりも小さくなることが好ましい。
【0068】
〔図8(b)に示す第三実施形態の別例〕
前記小突起37に代えて、スライダ移動領域Pの各凹部16と同様な小凹部38が形成されている。外側領域SOでスライダ18を尻口部36側へ移動させると、係合突部23の先端係合面34がこの小凹部38に係合された後にその小凹部38から離れて移動するため、内側領域SIでスライダ18を尻口部36側へ移動させる場合よりも、移動抵抗力が大きくなる。なお、外側領域SOでの移動抵抗力はスライダ移動領域Pでの移動抵抗力よりも小さくなることが好ましい。
【0069】
〔第四実施形態〕
次に、本発明の第四実施形態にかかる替刃式カッターナイフについて第三実施形態との相違点を中心に図9,10を参照して説明する。
【0070】
第三実施形態におけるスライダ移動領域Pとスライダ着脱準備領域Sの内側領域SIとの間にスライダロック領域Rが追加されている。第二実施形態では凹凸部14の各凸部17のうち尻側長凸部15に隣接する一つの後端凸部17の端縁32のみに突出部17aが形成されているが、この突出部17aと同様な突出部15aを尻側長凸部15の端縁32にも形成し、この両突出部17a,15a間にロック凹部(前記後端凹部16)を形成する。なお、外側領域SOでの移動抵抗力はスライダ移動領域P及びスライダロック領域Rでの移動抵抗力よりも小さくなることが好ましい。
【0071】
〔第五実施形態〕
次に、本発明の第五実施形態にかかる替刃式カッターナイフについて図11を参照して説明する。
【0072】
スライダ18のばね支持部24においては、係止ばね21の両端部22aのうち、一方の端部22aが固定軸39aに支持され、他方の端部22aが長孔40に沿って移動可能な可動軸39bに支持されている。この可動軸39bを長孔40の範囲で移動させると、係止ばね21の両端部22aの間隔Lが変更される。この間隔Lを狭くすると、係止ばね21の弾性力が大きくなり、この間隔Lを広くすると、係止ばね21の弾性力が小さくなる。この第五実施形態のばね支持部24は、第一実施形態及びその別例や第二実施形態及びその別例で反発力変更手段として、第二実施形態及びその別例や第四実施形態で移動抵抗力変更手段として、第三実施形態及びその別例や第四実施形態で移動抵抗力変更手段として、それぞれ応用することができる。
【0073】
〔そのほかの別例〕
* 第一実施形態及びその別例において、係止ばね21の係合突部23の形状や、その係合突部23が係合する凹凸部14の形状を図12(a)や図12(b)に示すように変更する。
【0074】
* 図示しないが、第三実施形態及びその別例において、スライダ支持部2の尻部6における下案内壁部8の内側に膨出部を形成する。この膨出部がスライダ本体19に当接して、第三実施形態における小突起37と同様な機能を果たす。
【0075】
* 図示しないが、ばね支持部24により両端部22aで支持された両持ち梁状の係止ばね21(係合突部23を有する板ばね)に代えて、ばね支持部により一端部で支持された片持ち梁状の係止ばね(係合突部を有する板ばね)に変更する。また、ばね支持部で支持された圧縮コイルばねにより係合突部を付勢した係止ばねに変更する。
【図面の簡単な説明】
【図1】 (a)は第一実施形態に係る替刃式カッターナイフにおいて使用状態を示す正面図であり、(b)は同じく刃体交換可能状態を示す正面図である。
【図2】 (a)は図1(b)の部分拡大正面図であり、(b)(c)は(a)のA−A線部分断面図である。
【図3】 (a)(b)は第一実施形態の作用説明図である。
【図4】 (a)(b)は第一実施形態の別例の作用説明図である。
【図5】 (a)は第二実施形態に係る替刃式カッターナイフにおいて使用状態を示す正面図であり、(b)は同じく不使用状態を示す正面図である。
【図6】 (a)は第二実施形態の作用説明図であり、(b)は第二実施形態の別例の作用説明図である。
【図7】 (a)は第三実施形態に係る替刃式カッターナイフにおいて使用状態を示す正面図であり、(b)は同じく刃体交換途中状態を示す正面図である。
【図8】 (a)は第三実施形態の作用説明図であり、(b)は第三実施形態の別例の作用説明図である。
【図9】 (a)は第四実施形態に係る替刃式カッターナイフにおいて使用状態を示す正面図であり、(b)は同じく刃体交換途中状態を示す正面図である。
【図10】 第四実施形態の作用説明図である。
【図11】 (a)(b)は第五実施形態の作用説明図である。
【図12】 (a)(b)はそのほかの別例の作用説明図である。
【図13】 (a)(b)は従来例の作用説明図である。
【図14】 (a)は従来の替刃式カッターナイフにおいて刃体交換可能状態を示す部分拡大正面図であり、(b)(c)は(a)のB−B線部分断面図である。
【符号の説明】
1…把持柄、5…頭口部、11…案内縁部(案内部)、12…頭側長凸部、13…拡大凹部、15…尻側長凸部、16…凹部、17…凸部、18…スライダ、21…係止ばね、23…係合突部、26…刃体、27…開口部、28…端部、29…内面部、30…底面、31…側面、32a…頂部、33…側係合面、34…先端係合面、X…前後方向(スライダ移動方向)、P…スライダ移動領域、Q…刃体着脱領域、R…スライダロック領域、S…スライダ着脱準備領域、SI…内側領域、SO…外側領域、WP,WQ…間隔、DP,DQ…深さ、HP,HR…高さ、θP,θR…角度。
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a replaceable blade type cutter knife in which a slider is supported on a grip handle so as to be movable together with a blade body.
[0002]
[Prior art]
A conventional replaceable blade type cutter knife shown in FIG. 14A (see Patent Document 1 and Patent Document 2 below) is detachably connected to a slider 18 having a locking spring 21. A blade body 26 and a grip handle 1 that supports the slider 18 so as to be movable together with the blade body 26 are provided. The grip 1 is formed with a guide edge 11 in which a plurality of concave portions 13 and 16 and convex portions 17 are alternately arranged along the moving direction X of the slider 18. The engaging protrusion 23 formed on the locking spring 21 of the slider 18 is engaged with the guide edge 11 of the grip handle 1 as the slider 18 moves, and the blade 26 is the head portion of the grip handle 1. 5 can protrude. When the slider 18 is moved from the slider movement area P to the blade attachment / detachment area Q, the engagement protrusion 23 of the locking spring 21 of the slider 18 is moved into the slider movement area P as shown in FIGS. It moves to the recessed part 13 of the blade body attaching / detaching area Q from the recessed part 16 and is engaged. In this blade attaching / detaching region Q, as shown in FIGS. 14B and 14C, the slider 18 can be tilted by allowing the locking protrusion 19a of the slider 18 to enter the notch 10 of the gripping handle 1, The support shaft portion 25 a of the slider 18 is separated from the support hole 26 a of the blade body 26, and the blade body 26 can be attached to and detached from the slider 18.
[0003]
[Patent Document 1]
Japanese Patent Publication No.59-6673
[Patent Document 2]
Japanese Utility Model Publication No. 56-82754
[Patent Document 3]
JP-A-60-236679
[0004]
[Problems to be solved by the invention]
The cutter knife is used in a state where the engagement protrusion 23 of the locking spring 21 of the slider 18 is engaged with the recess 16 of the slider movement region P and positioned. In that case, the slider 18 is smoothly moved with respect to the gripping handle 1, and the engaging protrusion of the locking spring 21 of the slider 18 is prevented from inadvertently moving with respect to the gripping handle 1 during positioning in use. 23 needs to be brought into pressure contact with the concave portion 16 of the slider movement region P with an appropriate elastic force of the locking spring 21. However, in the blade body attaching / detaching region Q, if the pressing force of the engaging projection 23 against the recess 13 is too strong, even if the slider 18 is tilted against the elastic force of the leaf spring 35 and then the slider 18 is released, The elastic force of the leaf spring 35 does not sufficiently act on the slider 18 and the slider 18 may not return to the state before tilting. Therefore, the operability of the slider 18 with respect to the gripping handle 1 is deteriorated and the usability is deteriorated.
[0005]
Further, when the engagement protrusion 23 of the locking spring 21 of the slider 18 is engaged with the recess 16 in the slider movement region P in a non-use state where the blade body 26 is housed in the gripping handle 1, If the pressure contact force of the engaging protrusion 23 is too weak, the slider 18 may move inadvertently with respect to the handle 1 during positioning when not in use. Therefore, the operability of the slider 18 with respect to the gripping handle 1 is deteriorated and the usability is deteriorated.
[0006]
Furthermore, as shown in Patent Document 3 above, in the case of a cutter knife that attaches and detaches the slider together with the blade body from the bottom side (opposite side of the head opening portion) of the grip handle and replaces the blade body with the slider, When the engaging protrusion of the locking spring is disengaged from the concave portion of the slider moving region, the slider moving resistance force suddenly decreases. For this reason, there is a possibility that the slider may inadvertently fall out of the grip handle. Therefore, the operability of the slider with respect to the grip handle is deteriorated and the usability is deteriorated.
[0007]
An object of the present invention is to improve usability by improving the operability of a slider with respect to a grip handle.
[0008]
[Means for Solving the Problems and Effects of the Invention]
  Postscript implementation formstate(1, 2 and 3, another example of the first embodiment shown in FIG. 4, the second embodiment shown in FIGS. 5 and 6A, the second embodiment shown in FIG. 6B. 7 and FIG. 8A, another example of the third embodiment shown in FIG. 8B, the fourth embodiment shown in FIGS. Fifth embodiment)Among them, in particular, the first embodiment and its other examples, the second embodiment, its other examples and the fourth embodiment.The present invention will be described with reference to the following symbols.
[0009]
  *Claims 1-3Invention
  Claim 1The replaceable blade type cutter knife according to the invention of the first embodimentStateCorrespondingly,Moreover, the replaceable blade type cutter knife according to the invention of claim 2 corresponds to another example of the first embodiment, and all have the following common configuration.
[0010]
This replaceable blade type cutter knife includes a slider (18) having a locking spring (21), a blade body (26) removably coupled to the slider (18), and the slider (18) as a blade body. (26) and a grip handle (1) that is movably supported. The gripping handle (1) has a guide portion in which a plurality of concave portions (13, 16) and convex portions (12, 15, 17) are alternately arranged along the moving direction (front-rear direction X) of the slider (18). (Guide edge 11) is formed. The engaging protrusion (23) formed on the locking spring (21) of the slider (18) is engaged with the guide portion (11) of the grip handle (1) as the slider (18) is moved. The body (26) can protrude from the mouth (5) of the grip handle (1).
[0011]
A slider moving region (P) for holding the slider (18) with respect to the gripping handle (1) and allowing the slider (18) to move with respect to the gripping handle (1), and the slider (18) with the gripping handle (1). And a blade body attaching / detaching region (Q) for attaching / detaching the blade body (26) to / from the slider (18). For example, the blade attachment / detachment region (Q) is on the mouth (5) side in the grip handle (1). Further, for example, in this blade body attaching / detaching area (Q), the slider (18) reciprocates between the blade body non-exchangeable position (E) and the blade body replaceable position (F), and a spring (plate spring 35) ) Against the elastic force of () to change the blade body replaceable position (E) to the blade body replaceable position (F), and the blade body replaceable position (F) cannot be replaced by the elastic force of the spring (35). Position (E) is reached.
[0012]
  The engagement protrusion (23) of the locking spring (21) of the slider (18) is engaged with the guide portion (11) of the grip handle (1), and this guide portion (11) is engaged with the guide portion (11). Regarding the repulsive force of the engaging protrusion (23) of the locking spring (21) (force generated in the locking spring when the locking spring presses the guide portion), the guide portion (11) of the grip handle (1) Form ofStateThe slider moving area (P) and the blade body attaching / detaching area (Q) are different from each other so that the repulsive force of the blade attaching / detaching area (Q) is smaller than the repulsive force of the slider moving area (P). The repulsive force changing means set in (1) is provided. In that case, there is a state where the repulsive force is generated and a state where the repulsive force is not generated, and that the repulsive force of the other is smaller than the repulsive force of one side means a comparison of the magnitudes of both repulsive forces.
  Furthermore, the invention of claim 1 is configured as follows.
  The repulsive force changing means changes the form of the guide portion (11) of the grip handle (1). The concave portions (13, 16) of the guide portion (11) of the grip handle (1) are formed on the slider (18) in the opening portion (27) with which the engaging protrusion (23) of the locking spring (21) is engaged. ) In the moving direction (X), and both end portions (28) facing each other and an inner surface portion (29) facing the opening portion (27). As for the distance between the both end portions (28), the distance (WQ) of the blade attachment / detachment area (Q) is set larger than the distance (WP) of the slider movement area (P). The engaging protrusion (23) of the locking spring (21) has, in the engaged state, both side engaging surfaces (33) facing both end portions (28) of the recessed portion (13, 16) and the recessed portion. A tip engagement surface (34) facing the inner surface portion (29) of (13, 16). For example, in addition to the invention of claim 3, even if the engagement protrusion (23) of the locking spring (21) is brought into contact with the recess (13, 16) of the grip handle (1) in the blade body attaching / detaching region (Q). Good. In that case, there may be a state where repulsive force is generated or a state where no repulsive force is generated.
  Furthermore, the invention of claim 2 is configured as follows.
  The repulsive force changing means changes the form of the guide portion (11) of the grip handle (1). The concave portions (13, 16) of the guide portion (11) of the grip handle (1) are formed on the slider (18) in the opening portion (27) with which the engaging protrusion (23) of the locking spring (21) is engaged. ) In the moving direction (X), and both end portions (28) facing each other and an inner surface portion (29) facing the opening portion (27). Regarding the depth from the opening (27) to the inner surface (29), the depth (DQ) of the blade attaching / detaching region (Q) is set larger than the depth (DP) of the slider moving region (P). is doing. The engaging protrusion (23) of the locking spring (21) has, in the engaged state, both side engaging surfaces (33) facing both end portions (28) of the recessed portion (13, 16) and the recessed portion. A tip engagement surface (34) facing the inner surface portion (29) of (13, 16). Incidentally, the above-mentioned depth refers to the contact portion from the opening (27) in a state where the engagement protrusion (23) of the locking spring (21) is in contact with the inner surface (29) of the recess (13, 16). The distance to (30a) means that even if the recesses (13, 16) are dug deeper than the contact part (30a), the dug part does not function at all for the movement of the engaging protrusion (23). Therefore, the shape in which the digging portion is formed and the shape in which it is not formed are equivalent. For example, in addition to the invention of claim 3, even if the engagement protrusion (23) of the locking spring (21) is brought into contact with the recess (13, 16) of the grip handle (1) in the blade body attaching / detaching region (Q). Good. In that case, there may be a state where repulsive force is generated or a state where no repulsive force is generated.
[0013]
  In the invention of claim 1 and invention of claim 2,In the slider movement area (P), the pressing force of the engaging projection (23) against the recess (16) is set to be moderate, and the slider (18) moves smoothly with respect to the grip handle (1) during use. Even when the slider (18) is not moved carelessly with respect to the grip handle (1) during positioning during use, the engagement protrusion (23) with respect to the recess (13) in the blade attachment / detachment region (Q) is obtained. ) Is weakened, the slider (18) can be smoothly moved when the blade (26) is replaced. Therefore, the operability of the slider (18) with respect to the grip handle (1) can be improved and the usability can be improved.
[0016]
  Further claim 1In the present invention, the simple means of simply changing the interval (WP, WQ) between the both end portions (28) of the opening (27) in the recess (13, 16) of the guide portion (11) of the grip handle (1). Thereby, the press-contact force of the engagement protrusion (23) with respect to the recessed part (13) can be weakened in the blade body attaching / detaching region (Q).
[0019]
  Furthermore, claim 2In this invention, the depth (DP, DQ) from the opening (27) to the inner surface (29) in the recess (13, 16) of the guide (11) of the grip handle (1) is simply changed. By means, it is possible to weaken the pressure contact force of the engaging projection (23) with respect to the recess (13) in the blade body attaching / detaching region (Q).
[0020]
  Claim 3The invention of, Claim 1OrClaim 2The present invention is configured as follows on the premise of the present invention.
[0021]
In the blade attachment / detachment region (Q), the engagement protrusion (23) of the locking spring (21) is loosely fitted to the recess (13) of the grip handle (1) and the repulsive force is not generated. . Incidentally, loose fitting means that the engagement protrusion (23) can have a gap with respect to the recess (13) in a state where no repulsive force is generated in the locking spring (21).
[0022]
  Claim 3In this invention, the press-contact force of the engaging protrusion (23) with respect to the recessed part (13) can be reliably reduced in the blade body attaching / detaching region (Q).
  *Claims 4-5Invention
  Claim 4The replaceable blade cutter knife according to the invention ofSecond embodiment and fourth embodimentCorresponding toFurther, the replaceable blade type cutter knife according to the invention of claim 5 corresponds to another example of the second embodiment, and all have the following common configuration.
[0023]
This replaceable blade type cutter knife includes a slider (18) having a locking spring (21), a blade body (26) removably coupled to the slider (18), and the slider (18) as a blade body. (26) and a grip handle (1) that is movably supported. The gripping handle (1) has a guide portion in which a plurality of concave portions (13, 16) and convex portions (12, 15, 17) are alternately arranged along the moving direction (front-rear direction X) of the slider (18). (Guide edge 11) is formed. The engaging protrusion (23) formed on the locking spring (21) of the slider (18) is engaged with the guide portion (11) of the grip handle (1) as the slider (18) is moved. The body (26) can protrude from the mouth (5) of the grip handle (1).
[0024]
A slider moving region (P) for holding the slider (18) with respect to the gripping handle (1) and allowing the slider (18) to move with respect to the gripping handle (1), and the slider (18) with the gripping handle (1). And a slider lock region (R) that restricts movement of the slider (18) relative to the grip handle (1). For example, the slider lock region (R) is on the buttocks (6) side opposite to the mouth (5) in the grip handle (1).
[0025]
  The guide of the grip handle (1) in an engaged state in which the engagement protrusion (23) of the locking spring (21) of the slider (18) is engaged with the guide portion (11) of the grip handle (1). With respect to the movement resistance force (the movement resistance force of the slider with respect to the gripping handle) of the engagement protrusion (23) of the locking spring (21) with respect to the portion (11), the shape of the guide portion (11) of the gripping handle (1)StateThe slider movement area (P) and the slider lock area (R) are different from each other so that the movement resistance force of the slider lock area (R) is larger than the movement resistance force of the slider movement area (P). The movement resistance force changing means set in (1) is provided.
  Furthermore, the invention of claim 4 is configured as follows.
  The moving resistance force changing means is obtained by changing the form of the guide portion (11) of the grip handle (1). The recesses (13, 16) of the guide part (11) of the grip handle (1) are formed on the slider (18) in the opening part (27) to which the engagement protrusion (23) of the locking spring (21) is engaged. ) In the moving direction (X), and both end portions (28) facing each other and an inner surface portion (29) facing the opening portion (27). The convex part (12, 15, 17) of the guide part (11) of the grip handle (1) has a top part (32a) adjacent to the opening part (27) of the concave part (13, 16) of the guide part (11). Have. Regarding the height from the opening (27) to the top (32a), the height (HR) of the slider lock region (R) is set larger than the height (HP) of the slider movement region (P). Yes. The engaging protrusion (23) of the locking spring (21) has, in the engaged state, both side engaging surfaces (33) facing both end portions (28) of the recessed portion (13, 16) and the recessed portion. A tip engagement surface (34) facing the inner surface portion (29) of (13, 16).
  Furthermore, the invention of claim 5 is configured as follows.
  The moving resistance force changing means is obtained by changing the form of the guide portion (11) of the grip handle (1). The concave portions (13, 16) of the guide portion (11) of the grip handle (1) are formed on the slider (18) in the opening portion (27) with which the engaging protrusion (23) of the locking spring (21) is engaged. ) In the moving direction (X), and both end portions (28) facing each other and an inner surface portion (29) facing the opening portion (27). The side surface (31) of the inner surface portion (29) between the both end portions (28) of the opening portion (27) and the bottom surface (30) of the inner surface portion (29) is in the moving direction (X) of the slider (18). The angle (θR) of the slider lock region (R) is set larger than the angle (θP) of the slider movement region (P). The engaging protrusion (23) of the locking spring (21) has, in the engaged state, both side engaging surfaces (33) facing both end portions (28) of the recessed portion (13, 16) and the recessed portion. A tip engagement surface (34) facing the inner surface portion (29) of (13, 16).
[0026]
  In invention of Claim 4 and invention of Claim 5,In the slider movement area (P), the movement resistance force of the engagement protrusion (23) with respect to the guide portion (11) is set to be moderate, and the slider (18) moves smoothly with respect to the grip handle (1) during use. In the slider lock region (R), since the movement resistance force of the engaging protrusion (23) with respect to the guide portion (11) is increased, the slider ( 18) can be prevented from moving carelessly. Therefore, the operability of the slider (18) with respect to the grip handle (1) can be improved and the usability can be improved.
[0029]
  Furthermore, claim 4In the invention, the slider lock region (R) can be obtained by simple means for changing the height (HP, HQ) of the convex portions (12, 15, 17) of the guide portion (11) of the grip handle (1). Thus, the movement resistance force of the convex portions (12, 15, 17) with respect to the guide portion (11) can be increased.
[0032]
  Furthermore, claim 5In the invention of the present invention, by simple means of simply changing the angle (θP, θR) of the side surface (34) of the inner surface portion (29) in the recess (13, 16) of the guide portion (11) of the grip handle (1), In the slider lock region (R), the movement resistance force of the engaging protrusion (23) with respect to the guide portion (11) can be increased.
[0038]
  *6th invention
  This invention, Claim 3The present invention is configured as follows on the premise of the present invention.
[0039]
In the slider movement region (P), the engagement surfaces (33) on both sides of the engagement protrusion (23) of the locking spring (21) are the openings (27) of the recesses (13, 16) in the grip handle (1). The two repulsive forces are in pressure contact with both end portions (28).
[0040]
  *7th invention
  This invention, ContractFrom claim 1Claim 3The invention of any of the claims, or6th inventionIt is configured as follows on the premise of
[0041]
The locking spring (21) of the slider (18) is a leaf spring, and this leaf spring (21) is supported at both ends (22a) thereof, and the engagement protrusions (23) between the both ends (22a). )have. For example, at least one of both end portions (22a) of the leaf spring (21) is a movable fulcrum.
[0050]
DETAILED DESCRIPTION OF THE INVENTION
[First embodiment]
First, the replaceable blade type cutter knife according to the first embodiment of the present invention will be described with reference to FIGS.
[0051]
The grip handle 1 includes a metal slider support portion 2 and a plastic grip portion 3 attached to the outside of the slider support portion 2. A sliding groove 4 is formed on the front side of the slider support portion 2 so as to extend in the longitudinal direction (front-rear direction X). In the sliding groove 4, a head opening 5 is formed at the front end of the slider support portion 2, and is closed by the grip portion 3 at the buttocks 6 formed at the rear end of the slider support portion 2. A guide hole 9 is formed between the upper and lower guide wall portions 7 and 8 facing each other on the front side of the slider support portion 2 so as to extend in the front-rear direction X from the head opening portion 5 to the buttocks portion 6. Cutout portions 10 are formed in the upper and lower guide wall portions 7 and 8 so as to face each other in the vicinity of the head opening portion 5. In the lower guide wall portion 8, a guide edge portion 11 (guide portion) extends between the notch portion 10 and the bottom portion 6 so as to face the upper guide wall portion 7 in the front-rear direction X. The guide edge portion 11 includes one head-side long convex portion 12 extending from the notch portion 10 toward the buttocks 6, one enlarged concave portion 13 continuous from the head-side long convex portion 12, and continuous from the enlarged concave portion 13. A plurality of concavo-convex portions 14, and one butt side long convex portion 15 that continues from the concavo-convex portion 14 at the butt portion 6. In the concavo-convex portion 14, the concave portions 16 and the convex portions 17 are alternately arranged in parallel, the front end convex portion 17 is continuous from the enlarged concave portion 13, and the rear end concave portion 16 is continuous to the butt-side long convex portion 15. is doing.
[0052]
The slider 18 includes a metal slider main body 19 and a plastic operation knob 20 attached to the front side of the slider main body 19, and is fitted in the sliding groove 4 of the grip handle 1. A locking spring 21 (plate spring) is fitted in the slider body 19. The locking spring 21 is bent in a U shape, and includes both arm portions 22 and an engaging protrusion 23 curved between them. Both end portions 22a of both arm portions 22 are supported by a spring support portion 24 so as to be movable in the front-rear direction X. The engagement protrusion 23 between the arms 22 protrudes from the slider main body 19 toward the guide edge 11 of the grip handle 1. On the front side of the slider body 19, a blade support plate portion 25 having a support shaft portion 25a is projected.
[0053]
The blade body 26 has a support hole 26 a at the base end portion, and the base end portion side is inserted into the sliding groove 4 from the head opening portion 5 with the grip handle 1, and is formed in the blade body support plate portion 25 of the slider body 19. The support hole 26 a is inserted into the support shaft portion 25 a of the blade support plate portion 25 and is detachably connected to the slider 18. When the slider 18 is moved in the front-rear direction X with respect to the gripping handle 1, the engagement protrusion 23 of the locking spring 21 of the slider 18 is engaged with the guide edge 11 of the gripping handle 1, and the blade body 26 together with the slider 18. It moves and protrudes from the head opening 5 of the gripping handle 1 and is stored in the sliding groove 4 of the gripping handle 1.
[0054]
In the guide edge portion 11 of the gripping handle 1, one enlarged concave portion 13 and each concave portion 16 of the concave-convex portion 14 move the slider 18 in the opening 27 where the engaging protrusion 23 of the locking spring 21 is engaged. Both end portions 28 facing each other in the direction (front-rear direction X) and an inner surface portion 29 facing the opening 27 are provided. The inner surface portion 29 has a bottom surface 30 and both side surfaces 31 between the bottom surface 30 and both end portions 28. In the guide edge portion 11, one head-side long convex portion 12, each convex portion 17 of the concavo-convex portion 14, and one buttocks-side long convex portion 15 have end edges 32 between the both end portions 28. The top portions 32a on the respective end edges 32 are on a straight line 28a connecting the end portions 28 in the front-rear direction X. The engaging projections 23 of the locking spring 21 are engaged with the respective recesses 13 and 16, and are engaged with both side engaging surfaces 33 facing both end portions 28 of the respective recesses 13 and 16, respectively. It has the front-end | tip engaging surface 34 which faces the inner surface part 29 of the recessed parts 13 and 16. As shown in FIG.
[0055]
In the guide edge portion 11, when comparing the interval WQ between both end portions 28 in one enlarged recess 13 and the interval WP between both end portions 28 in each recess portion 16 of the concavo-convex portion 14, this interval is more than this interval WP. WQ (> WP) is set to a large value to provide a repulsive force change means.
[0056]
In the engaged state (slider movement region P) in which the engaging protrusion 23 of the locking spring 21 is engaged with the concave portion 16 of the concavo-convex portion 14, the both-side engaging surfaces 33 of the engaging protrusion 23 are at both ends of the concave portion 16. The locking spring 21 is pressed against the portion 28 and a repulsive force is generated by the elastic force. In the engaged state (blade body attaching / detaching region Q) in which the engaging protrusion 23 of the locking spring 21 is engaged with the enlarged recess 13, there is no repulsive force in the locking spring 21, and the engaging protrusion The portion 23 is loosely fitted in the enlarged recess 13, and a gap G may be generated between the both side engaging surfaces 33 and the tip engaging surface 34 of the engaging protrusion 23 and the inner surface 29 of the enlarged recess 13. Incidentally, the engaging protrusion 23 of the locking spring 21 is engaged with the enlarged recess 13 and the slider 18 is brought into contact with the slider support portion 2 of the gripping handle 1 and stopped. The engagement protrusion 23 of the locking spring 21 is not engaged with the notch 10. In this slider movement region P, the back portion 26 b of the blade body 26 is pressed against the inner surface of the sliding groove 4 by the elastic force of the locking spring 21, and the cutting edge 26 c of the blade body 26 extends from the inner surface of the sliding groove 4. The blades 26 are separated from each other to prevent rattling. In this blade body attaching / detaching region Q, the back portion 26b of the blade body 26 is also separated from the inner surface of the sliding groove 4, or the elastic force of the locking spring 21 is weakened and the pressure contact force against the sliding groove 4 is weakened. The blade body can be easily replaced.
[0057]
As shown in FIG. 2B, the slider 18 is in a blade body non-exchangeable position E in the blade body attaching / detaching region Q. When the slider 18 is pushed against the elastic force of the leaf spring 35 attached to the gripping handle 1 in the sliding groove 4, both locking projections 19 a formed on the slider main body 19 cause both notch portions of the gripping handle 1 to be cut. 10 and the slider 18 can be tilted, and the slider 18 reaches the blade body replaceable position F as shown in FIG. Therefore, the support shaft portion 25 a of the slider body 19 is separated from the support hole 26 a of the blade body 26, and the blade body 26 can be attached to and detached from the slider 18 from the head opening 5 side of the gripping handle 1. In this case, the repulsive force changing means functions, and the engagement protrusion 23 of the locking spring 21 of the slider 18 is engaged with the guide edge 11 of the gripping handle 1 and the guide edge 11 Regarding the repulsive force of the engagement protrusion 23 of the locking spring 21, the repulsive force of the blade body attaching / detaching region Q is smaller than the repulsive force of the slider moving region P. Accordingly, in the blade attachment / detachment region Q, the pressure contact force of the engagement protrusion 23 with respect to the enlarged recess 13 becomes weak, and when the slider 18 is tilted against the elastic force of the leaf spring 35 and then released, The elastic force of the leaf spring 35 sufficiently acts on the slider 18, and the slider 18 returns from the blade body replaceable position F to the blade body non-exchangeable position E.
[0058]
[Another example of the first embodiment shown in FIG. 4]
In the guide edge portion 11, the depth DQ from the opening portion 27 to the bottom surface 30 of the inner surface portion 29 in one enlarged concave portion 13 and the distance from the opening portion 27 in each concave portion 16 of the concave and convex portion 14 to the bottom surface 30 of the inner surface portion 29. When the depth DP is compared, the depth DQ (> DP) is set to be larger than the depth DP, and the repulsive force changing means is used.
[0059]
In the slider movement region P, the tip engagement surface 34 of the engagement protrusion 23 of the locking spring 21 is pressed against the contact portion 30a of the bottom surface 30 of the recess 16, and a repulsive force is generated in the locking spring 21 by the elastic force. . In the blade attachment / detachment region Q, the distal end engagement surface 34 of the engagement protrusion 23 is pressed against the contact portion 30a of the bottom surface 30 of the recess 16 with the locking spring 21 extended. Regarding the repulsive force of the engagement protrusion 23 of the locking spring 21 with respect to the guide edge 11, the repulsive force of the blade body attaching / detaching region Q is smaller than the repulsive force of the slider moving region P. Therefore, in the blade body attaching / detaching region Q, the pressure contact force of the engaging protrusion 23 with respect to the enlarged recess 13 is weakened.
[0060]
[Second Embodiment]
Next, the replaceable blade type cutter knife according to the second embodiment of the present invention will be described with reference to FIGS. 5 and 6A focusing on the differences from the first embodiment.
[0061]
In the guide edge portion 11, only the edge 32 of one rear end convex portion 17 adjacent to the bottom long convex portion 15 among the respective convex portions 17 of the concave and convex portion 14 is the edge 32 of the other convex portion 17. Projecting portion 17a is formed so as to project further. The height HR from the straight line 28a connecting the end portion 28 of the opening 27 of each concave portion 16 to the top portion 32a of the end edge 32 of the projecting portion 17a, and the top portion 32a of the end edge 32 of the other convex portion 17 from the straight line 28a. Is compared with this height HP, this height HR (> HP) is set larger than this height HP, and the movement resistance force changing means is used.
[0062]
The engagement protrusion 23 of the locking spring 21 is engaged with the rear end concave portion 16 (lock concave portion) between the rear end convex portion 17 and the butt-side long convex portion 15 among the concave portions 16 of the uneven portion 14. In the engaged state (slider lock region R), one side engaging surface 33 of the both side engaging surfaces 33 of the engaging protrusion 23 is pressed against the protruding portion 17 a of the rear end convex portion 17. Therefore, when the slider 18 is moved to the head opening 5 side in the slider lock region R, the engagement state in which the engagement protrusion 23 of the locking spring 21 is engaged with the other recess 16 (slider movement region P). As a result, the resistance to movement increases as compared with the case where the slider 18 is moved to the head opening 5 side. Therefore, in the slider lock region R, the movement of the slider 18 with respect to the handle 1 can be restricted.
[0063]
[Another example of the second embodiment shown in FIG. 6B]
The angle θR formed by the side surfaces 31 with respect to the movement direction (front-rear direction X) of the slider 18 in the rear end recess 16 (lock recess) and the side surfaces 31 formed with respect to the movement direction (front-rear direction X) in the other recesses 16. When the angle θP is compared with the angle θP, the angle θR (> θP) is set larger than the angle θP, and the moving resistance force changing unit is used. In the rear end recess 16 (lock recess) in the slider lock region R and the other recess 16 in the slider movement region P, the engagement of the locking spring 21 is the same as in the other example of the first embodiment shown in FIG. The tip engagement surface 34 of the protrusion 23 is pressed against the bottom surface 30 of the recess 16. When the slider 18 is moved to the head opening 5 side in the slider lock region R, one side engagement surface 33 of the both side engagement surfaces 33 of the engagement protrusion 23 is the side surface of the rear end recess 16 (lock recess). Therefore, the resistance to movement is increased compared to the case where the slider 18 is moved to the head opening 5 side in the slider movement region P. Therefore, in the slider lock region R, the movement of the slider 18 with respect to the handle 1 can be restricted.
[0064]
[Third embodiment]
Next, the replaceable blade type cutter knife according to the third embodiment of the present invention will be described with reference to FIGS. 7 and 8A focusing on the differences from the first embodiment.
[0065]
In the grip handle 1, the grip portion 3 of the first embodiment is omitted, and the slider support portion 2 also serves as the grip portion. The blade body attaching / detaching region Q of the first embodiment is omitted, and accordingly, the both cutout portions 10 and the leaf spring 35 are also omitted. The slide groove 4 is opened at the bottom portion 6 of the slider support portion 2 to form a bottom end portion 36. The slider 18 is attached to and detached from the tail opening 36 together with the blade body 26, and the blade body 26 is exchanged with respect to the slider 18.
[0066]
The butt-side long convex portion 15 is in a slider attachment / detachment preparation region S that continuously extends from the slider movement region P to the butt opening 36. A small protrusion 37 is formed in the vicinity of the butt opening 36 on the end edge 32 of the butt long projection 15 to serve as a movement resistance changing means. The slider attachment / detachment preparation region S is divided into an inner region SI from the rear end concave portion 16 to the small protrusion 37 and an outer region SO from the small protrusion 37 to the tail opening 36.
[0067]
In the inner region SI, the engagement protrusion 23 of the locking spring 21 is separated from the rear end recessed portion 16 of the slider movement region P, and the front end engagement surface 34 of the engagement protrusion 23 is the end of the bottom long convex portion 15. Pressed against the edge 32. Therefore, when the slider 18 is moved toward the bottom end 36 in the inner region SI, the movement resistance force is smaller than when the slider 18 is moved toward the bottom end 36 in the slider moving region P. When the slider 18 is moved toward the bottom end 36 in the outer region SO, the tip engaging surface 34 of the engaging protrusion 23 contacts the small protrusion 37 and then moves over the small protrusion 37. The movement resistance is greater than when the slider 18 is moved toward the bottom opening 36 in the region SI. Note that the movement resistance force in the outer region SO is preferably smaller than the movement resistance force in the slider movement region P.
[0068]
[Another example of the third embodiment shown in FIG. 8B]
Instead of the small protrusions 37, small concave portions 38 similar to the respective concave portions 16 of the slider movement region P are formed. When the slider 18 is moved toward the bottom opening 36 in the outer region SO, the tip engagement surface 34 of the engagement protrusion 23 is moved away from the small recess 38 after being engaged with the small recess 38. The resistance to movement is greater than when the slider 18 is moved toward the tail opening 36 in the inner region SI. Note that the movement resistance force in the outer region SO is preferably smaller than the movement resistance force in the slider movement region P.
[0069]
[Fourth embodiment]
Next, a replaceable blade type cutter knife according to a fourth embodiment of the present invention will be described with reference to FIGS. 9 and 10, focusing on differences from the third embodiment.
[0070]
A slider lock region R is added between the slider movement region P and the inner region SI of the slider attachment / detachment preparation region S in the third embodiment. In the second embodiment, the protrusion 17a is formed only on the edge 32 of one rear end protrusion 17 adjacent to the butt long protrusion 15 among the protrusions 17 of the uneven portion 14, but this protrusion A protrusion 15a similar to 17a is also formed on the end edge 32 of the butt long projection 15, and a lock recess (the rear end recess 16) is formed between the protrusions 17a and 15a. The movement resistance force in the outer region SO is preferably smaller than the movement resistance force in the slider movement region P and slider lock region R.
[0071]
[Fifth embodiment]
Next, a replaceable blade type cutter knife according to a fifth embodiment of the present invention will be described with reference to FIG.
[0072]
In the spring support portion 24 of the slider 18, one end portion 22 a of the both end portions 22 a of the locking spring 21 is supported by the fixed shaft 39 a, and the other end portion 22 a is movable along the long hole 40. It is supported by the shaft 39b. When the movable shaft 39b is moved within the range of the long hole 40, the distance L between the both end portions 22a of the locking spring 21 is changed. When the distance L is narrowed, the elastic force of the locking spring 21 is increased, and when the distance L is increased, the elastic force of the locking spring 21 is decreased. The spring support portion 24 of the fifth embodiment is a repulsive force changing means in the first embodiment and its other examples, the second embodiment and its other examples, and in the second embodiment and its other examples and the fourth embodiment. The moving resistance force changing means can be applied as the moving resistance force changing means in the third embodiment and other examples thereof or the fourth embodiment.
[0073]
[Other examples]
* In the first embodiment and other examples thereof, the shape of the engaging protrusion 23 of the locking spring 21 and the shape of the concavo-convex part 14 with which the engaging protrusion 23 engages are shown in FIGS. Change as shown in b).
[0074]
* Although not shown, in the third embodiment and other examples thereof, a bulging portion is formed inside the lower guide wall portion 8 in the bottom portion 6 of the slider support portion 2. This bulging portion abuts on the slider body 19 and performs the same function as the small protrusion 37 in the third embodiment.
[0075]
* Although not shown, it is supported at one end by a spring support instead of a doubly-supported locking spring 21 (a leaf spring having an engaging projection 23) supported by both ends 22a by a spring support 24. It is changed to a cantilever-like locking spring (a leaf spring having an engaging protrusion). Moreover, it changes into the latching spring which biased the engagement protrusion by the compression coil spring supported by the spring support part.
[Brief description of the drawings]
FIG. 1A is a front view showing a use state of a replaceable blade type cutter knife according to a first embodiment, and FIG. 1B is a front view showing a blade body exchangeable state.
2A is a partially enlarged front view of FIG. 1B, and FIG. 2B and FIG. 2C are partial cross-sectional views taken along line AA of FIG.
FIGS. 3A and 3B are operation explanatory views of the first embodiment. FIGS.
FIGS. 4A and 4B are operation explanatory views of another example of the first embodiment. FIGS.
FIG. 5A is a front view showing a use state in a replaceable blade cutter knife according to a second embodiment, and FIG. 5B is a front view showing the non-use state.
6A is an operation explanatory diagram of the second embodiment, and FIG. 6B is an operation explanatory diagram of another example of the second embodiment.
FIG. 7A is a front view showing a use state in the replaceable blade type cutter knife according to the third embodiment, and FIG. 7B is a front view showing a state in which the blade body is being replaced.
8A is an operation explanatory diagram of the third embodiment, and FIG. 8B is an operation explanatory diagram of another example of the third embodiment.
FIG. 9A is a front view showing a use state in a replaceable blade type cutter knife according to a fourth embodiment, and FIG. 9B is a front view showing a state in which a blade body is being replaced.
FIG. 10 is an operation explanatory diagram of the fourth embodiment.
FIGS. 11A and 11B are operation explanatory views of the fifth embodiment. FIGS.
FIGS. 12A and 12B are operation explanatory diagrams of other examples.
FIGS. 13A and 13B are diagrams for explaining the operation of the conventional example.
FIGS. 14A and 14B are partial enlarged front views showing a state in which a blade body can be replaced in a conventional replaceable cutter knife, and FIGS. 14B and 12C are partial cross-sectional views taken along line BB in FIG. .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Grip handle, 5 ... Head part, 11 ... Guide edge part (guide part), 12 ... Head side long convex part, 13 ... Enlarged concave part, 15 ... Butt side long convex part, 16 ... Concave part, 17 ... Convex part , 18 ... slider, 21 ... locking spring, 23 ... engagement protrusion, 26 ... blade, 27 ... opening, 28 ... end, 29 ... inner surface, 30 ... bottom, 31 ... side, 32a ... top, 33 ... side engagement surface, 34 ... tip engagement surface, X ... longitudinal direction (slider movement direction), P ... slider movement area, Q ... blade body attachment / detachment area, R ... slider lock area, S ... slider attachment / detachment preparation area, SI ... inner region, SO ... outer region, WP, WQ ... interval, DP, DQ ... depth, HP, HR ... height, [theta] P, [theta] R ... angle.

Claims (5)

係止ばねを有するスライダと、このスライダに対し着脱可能に連結される刃体と、このスライダを刃体とともに移動可能に支持する把持柄とを備え、この把持柄にはスライダの移動方向に沿って複数の凹部と凸部とを交互に並設した案内部を形成し、このスライダの係止ばねに形成した係合突部をスライダの移動操作に伴い前記把持柄の案内部に係合して刃体を把持柄の口部から突出可能とした替刃式カッターナイフにおいて、
前記スライダを把持柄に対し保持するとともに把持柄に対するスライダの移動を許容するスライダ移動領域と、このスライダを把持柄に対し保持するとともに刃体をスライダに対し着脱する刃体着脱領域とを有し、
前記スライダの係止ばねの係合突部が前記把持柄の案内部に係合された係合状態でこの把持柄の案内部に対するこの係止ばねの係合突部の反発力については、把持柄の案内部の形態が前記スライダ移動領域と前記刃体着脱領域とで互いに異なるようにしてこのスライダ移動領域の反発力よりもこの刃体着脱領域の反発力が小さくなるように設定した反発力変更手段を備え、
この反発力変更手段は前記把持柄の案内部の形態を変更したものであり、この把持柄の案内部の凹部は、前記係止ばねの係合突部が係合される開口部においてスライダの移動方向で互いに対向する両端部と、その開口部に面する内面部とを有し、この両端部間の間隔については前記スライダ移動領域の間隔よりも前記刃体着脱領域の間隔を大きく設定し、
この係止ばねの係合突部は、前記係合状態で、前記凹部の両端部に面する両側係合面と、前記凹部の内面部に面する先端係合面とを有している
ことを特徴とする替刃式カッターナイフ。
A slider having a locking spring, a blade body that is detachably connected to the slider, and a grip handle that movably supports the slider together with the blade body, the grip handle along the slider moving direction. A plurality of concave portions and convex portions are alternately arranged side by side, and an engaging protrusion formed on the locking spring of the slider is engaged with the guide portion of the grip handle as the slider is moved. In the replaceable blade type cutter knife that can project the blade body from the mouth of the grip handle,
A slider moving region for holding the slider with respect to the gripping handle and allowing the slider to move with respect to the gripping handle; and a blade body attaching / detaching region for holding the slider with respect to the gripping handle and attaching / detaching the blade body to / from the slider. ,
With respect to the repulsive force of the engaging protrusion of the locking spring with respect to the guide part of the grip handle while the engaging protrusion of the locking spring of the slider is engaged with the guide part of the grip handle, repulsion form state of the guide portion of the handle is set to the repulsive force of the blade body removably region than the repulsive force of the slider moving region and different from each other between the slider moving region and the blade body detachable region is reduced Power change means,
The repulsive force changing means is a modification of the shape of the grip handle guide portion, and the recess of the handle handle guide portion is formed at the opening of the slider spring at which the engagement protrusion is engaged. It has both end portions facing each other in the moving direction and an inner surface portion facing the opening, and the interval between the both end portions is set to be larger than the interval of the slider moving region. ,
The engagement protrusion of the locking spring has a both-side engagement surface facing both ends of the recess and a tip engagement surface facing the inner surface of the recess in the engaged state. A replaceable blade type cutter knife.
係止ばねを有するスライダと、このスライダに対し着脱可能に連結される刃体と、このスライダを刃体とともに移動可能に支持する把持柄とを備え、この把持柄にはスライダの移動方向に沿って複数の凹部と凸部とを交互に並設した案内部を形成し、このスライダの係止ばねに形成した係合突部をスライダの移動操作に伴い前記把持柄の案内部に係合して刃体を把持柄の口部から突出可能とした替刃式カッターナイフにおいて、
前記スライダを把持柄に対し保持するとともに把持柄に対するスライダの移動を許容するスライダ移動領域と、このスライダを把持柄に対し保持するとともに刃体をスライダに対し着脱する刃体着脱領域とを有し、
前記スライダの係止ばねの係合突部が前記把持柄の案内部に係合された係合状態でこの把持柄の案内部に対するこの係止ばねの係合突部の反発力については、把持柄の案内部の形態が前記スライダ移動領域と前記刃体着脱領域とで互いに異なるようにしてこのスライダ移動領域の反発力よりもこの刃体着脱領域の反発力が小さくなるように設定した反発力変更手段を備え、
前記反発力変更手段は前記把持柄の案内部の形態を変更したものであり、この把持柄の案内部の凹部は、前記係止ばねの係合突部が係合される開口部においてスライダの移動方向で互いに対向する両端部と、その開口部に面する内面部とを有し、この開口部から内面部までの深さについては前記スライダ移動領域の深さよりも前記刃体着脱領域の深さを大きく設定し、
この係止ばねの係合突部は、前記係合状態で、前記凹部の両端部に面する両側係合面と、前記凹部の内面部に面する先端係合面とを有している
ことを特徴とする替刃式カッターナイフ。
A slider having a locking spring, a blade body that is detachably connected to the slider, and a grip handle that movably supports the slider together with the blade body, the grip handle along the slider moving direction. A plurality of concave portions and convex portions are alternately arranged side by side, and an engaging protrusion formed on the locking spring of the slider is engaged with the guide portion of the grip handle as the slider is moved. In the replaceable blade type cutter knife that can project the blade body from the mouth of the grip handle,
A slider moving region for holding the slider with respect to the gripping handle and allowing the slider to move with respect to the gripping handle; and a blade body attaching / detaching region for holding the slider with respect to the gripping handle and attaching / detaching the blade body to / from the slider. ,
With respect to the repulsive force of the engaging protrusion of the locking spring with respect to the guide part of the grip handle while the engaging protrusion of the locking spring of the slider is engaged with the guide part of the grip handle, repulsion form state of the guide portion of the handle is set to the repulsive force of the blade body removably region than the repulsive force of the slider moving region and different from each other between the slider moving region and the blade body detachable region is reduced Power change means,
The repulsive force changing means is a modification of the shape of the grip handle guide portion, and the recess portion of the handle handle guide portion is formed at the opening of the slider spring at which the engagement protrusion is engaged. It has both end portions facing each other in the moving direction and an inner surface facing the opening, and the depth from the opening to the inner surface is greater in the blade attachment / detachment region than in the slider moving region. Set a large value,
The engagement protrusion of the locking spring has a both-side engagement surface facing both ends of the recess and a tip engagement surface facing the inner surface of the recess in the engaged state. A replaceable blade type cutter knife.
前記刃体着脱領域では係止ばねの係合突部が把持柄の凹部に対し遊嵌されて前記反発力が生じていない状態にあることを特徴とする請求項1または請求項2に記載の替刃式カッターナイフ。  3. The state according to claim 1, wherein in the blade body attaching / detaching region, the engaging protrusion of the locking spring is loosely fitted to the concave portion of the grip handle so that the repulsive force is not generated. Replaceable blade cutter knife. 係止ばねを有するスライダと、このスライダに対し着脱可能に連結される刃体と、このスライダを刃体とともに移動可能に支持する把持柄とを備え、この把持柄にはスライダの移動方向に沿って複数の凹部と凸部とを交互に並設した案内部を形成し、このスライダの係止ばねに形成した係合突部をスライダの移動操作に伴い前記把持柄の案内部に係合して刃体を把持柄の口部から突出可能とした替刃式カッターナイフにおいて、
前記スライダを把持柄に対し保持するとともに把持柄に対するスライダの移動を許容するスライダ移動領域と、このスライダを把持柄に対し保持するとともに把持柄に対するスライダの移動を規制するスライダロック領域とを有し、
前記スライダの係止ばねの係合突部が前記把持柄の案内部に係合された係合状態で前記把持柄の案内部に対するこの係止ばねの係合突部の移動抵抗力については、把持柄の案内部の形態が前記スライダ移動領域と前記スライダロック領域とで互いに異なるようにしてこのスライダ移動領域の移動抵抗力よりもこのスライダロック領域の移動抵抗力が大きくなるように設定した移動抵抗力変更手段を備え、
この移動抵抗力変更手段は前記把持柄の案内部の形態を変更したものであり、前記把持柄の案内部の凹部は、前記係止ばねの係合突部が係合される開口部においてスライダの移動方向で互いに対向する両端部と、その開口部に面する内面部とを有し、この把持柄の案内部の凸部はその案内部の凹部の開口部に隣接する頂部を有し、この開口部から頂部までの高さについては前記スライダ移動領域の高さよりも前記スライダロック領域の高さを大きく設定し、
この係止ばねの係合突部は、前記係合状態で、前記凹部の両端部に面する両側係合面と、前記凹部の内面部に面する先端係合面とを有している
ことを特徴とする替刃式カッターナイフ。
A slider having a locking spring, a blade body that is detachably connected to the slider, and a grip handle that movably supports the slider together with the blade body, the grip handle along the slider moving direction. A plurality of concave portions and convex portions are alternately arranged side by side, and an engaging protrusion formed on the locking spring of the slider is engaged with the guide portion of the grip handle as the slider is moved. In the replaceable blade type cutter knife that can project the blade body from the mouth of the grip handle,
A slider moving region for holding the slider with respect to the gripping handle and allowing the slider to move with respect to the gripping handle; and a slider lock region for holding the slider with respect to the gripping handle and restricting the movement of the slider with respect to the gripping handle. ,
With respect to the movement resistance force of the engaging protrusion of the locking spring with respect to the guide part of the gripping handle in the engaged state where the engaging protrusion of the locking spring of the slider is engaged with the guide part of the gripping handle, form state of the guide portion of the grip handle is set as the movement resistance force of the slider lock area than the movement resistance force of the slider moving region increases in different from each other between the slider moving region and the slider lock area It has a movement resistance force change means,
The movement resistance force changing means is a modification of the shape of the grip handle guide portion, and the recess of the grip handle guide portion is a slider at an opening portion where the engagement protrusion of the locking spring is engaged. Both end portions facing each other in the moving direction of, and an inner surface portion facing the opening, the convex portion of the guide portion of the grip handle has a top portion adjacent to the opening portion of the concave portion of the guide portion, About the height from the opening to the top, the height of the slider lock area is set larger than the height of the slider movement area,
The engagement protrusion of the locking spring has a both-side engagement surface facing both ends of the recess and a tip engagement surface facing the inner surface of the recess in the engaged state. A replaceable blade type cutter knife.
係止ばねを有するスライダと、このスライダに対し着脱可能に連結される刃体と、このスライダを刃体とともに移動可能に支持する把持柄とを備え、この把持柄にはスライダの移動方向に沿って複数の凹部と凸部とを交互に並設した案内部を形成し、このスライダの係止ばねに形成した係合突部をスライダの移動操作に伴い前記把持柄の案内部に係合して刃体を把持柄の口部から突出可能とした替刃式カッターナイフにおいて、
前記スライダを把持柄に対し保持するとともに把持柄に対するスライダの移動を許容するスライダ移動領域と、このスライダを把持柄に対し保持するとともに把持柄に対するスライダの移動を規制するスライダロック領域とを有し、
前記スライダの係止ばねの係合突部が前記把持柄の案内部に係合された係合状態で前記把持柄の案内部に対するこの係止ばねの係合突部の移動抵抗力については、把持柄の案内部の形態が前記スライダ移動領域と前記スライダロック領域とで互いに異なるようにしてこのスライダ移動領域の移動抵抗力よりもこのスライダロック領域の移動抵抗力が大きくなるように設定した移動抵抗力変更手段を備え、
この移動抵抗力変更手段は前記把持柄の案内部の形態を変更したものであり、この把持柄の案内部の凹部は、前記係止ばねの係合突部が係合される開口部においてスライダの移動方向で互いに対向する両端部と、その開口部に面する内面部とを有し、この開口部の両端部とこの内面部の底面との間の内面部の側面がスライダの移動方向に対しなす角度については前記スライダ移動領域の角度よりも前記スライダロック領域の角度を大きく設定し、
この係止ばねの係合突部は、前記係合状態で、前記凹部の両端部に面する両側係合面と、前記凹部の内面部に面する先端係合面とを有している
ことを特徴とする替刃式カッターナイフ。
A slider having a locking spring, a blade body that is detachably connected to the slider, and a grip handle that movably supports the slider together with the blade body, the grip handle along the slider moving direction. A plurality of concave portions and convex portions are alternately arranged side by side, and an engaging protrusion formed on the locking spring of the slider is engaged with the guide portion of the grip handle as the slider is moved. In the replaceable blade type cutter knife that can project the blade body from the mouth of the grip handle,
A slider moving region for holding the slider with respect to the gripping handle and allowing the slider to move with respect to the gripping handle; and a slider lock region for holding the slider with respect to the gripping handle and restricting the movement of the slider with respect to the gripping handle. ,
With respect to the movement resistance force of the engaging protrusion of the locking spring with respect to the guide part of the gripping handle in the engaged state where the engaging protrusion of the locking spring of the slider is engaged with the guide part of the gripping handle, form state of the guide portion of the grip handle is set as the movement resistance force of the slider lock area than the movement resistance force of the slider moving region increases in different from each other between the slider moving region and the slider lock area It has a movement resistance force change means,
The movement resistance force changing means is a modification of the shape of the grip handle guide portion, and the recess portion of the handle handle guide portion is a slider at the opening portion where the engagement protrusion of the locking spring is engaged. Both end portions opposed to each other in the moving direction and an inner surface portion facing the opening portion, and the side surface of the inner surface portion between the both end portions of the opening portion and the bottom surface of the inner surface portion is in the moving direction of the slider. About the angle to be set, the angle of the slider lock area is set larger than the angle of the slider movement area,
The engagement protrusion of the locking spring has a both-side engagement surface facing both ends of the recess and a tip engagement surface facing the inner surface of the recess in the engaged state. A replaceable blade type cutter knife.
JP2002370280A 2002-12-20 2002-12-20 Replaceable blade cutter knife Expired - Fee Related JP4171645B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002370280A JP4171645B2 (en) 2002-12-20 2002-12-20 Replaceable blade cutter knife

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002370280A JP4171645B2 (en) 2002-12-20 2002-12-20 Replaceable blade cutter knife

Publications (3)

Publication Number Publication Date
JP2004195093A JP2004195093A (en) 2004-07-15
JP2004195093A5 JP2004195093A5 (en) 2006-02-09
JP4171645B2 true JP4171645B2 (en) 2008-10-22

Family

ID=32766241

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002370280A Expired - Fee Related JP4171645B2 (en) 2002-12-20 2002-12-20 Replaceable blade cutter knife

Country Status (1)

Country Link
JP (1) JP4171645B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115179330B (en) * 2022-06-28 2024-04-26 宁波赛宁电器有限公司 Portable cutter

Also Published As

Publication number Publication date
JP2004195093A (en) 2004-07-15

Similar Documents

Publication Publication Date Title
JP2633823B2 (en) Universal knife
US11034038B2 (en) Razor handle assembly and razor comprising the same
US20100018057A1 (en) Electric shaver
JP2017519572A (en) Shaving razor swivel lock
US10632635B2 (en) Razor
JP2005349128A (en) Electric shaver
JP4171645B2 (en) Replaceable blade cutter knife
US20210274908A1 (en) Nail clipper
JP2020129594A (en) Unit mounting structure and electronic equipment
JP2007061429A (en) Medical knife
JP2012090860A (en) Retractable knife
US20240198545A1 (en) Multifunctional cutter
JP2647561B2 (en) Folding nail clippers
JP2007187274A (en) Mounting member
JP4775889B2 (en) Electric razor
JP3053955U (en) Stapler binding operation preventing stopper structure and stapler with movable remover provided with the stopper structure
JP2001314667A (en) Blade breaker for cutter knife, cutter knife holder and cutter knife
JP2601606B2 (en) Structure of holder for blade-retractable cutter knife
JP4378913B2 (en) Reciprocating electric razor
JP4953233B2 (en) Electric razor
JP3812703B2 (en) cutter knife
JPS6021745A (en) Blade replacing type knife
KR100475464B1 (en) Nail clipper
JP3430518B2 (en) Hair cutter
JP2005237777A (en) Nail clipper

Legal Events

Date Code Title Description
A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20051215

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20051215

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070313

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070918

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20071114

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080205

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080331

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080805

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080811

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110815

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4171645

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110815

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140815

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees