JP4377606B2

JP4377606B2 - Nail clippers

Info

Publication number: JP4377606B2
Application number: JP2003114741A
Authority: JP
Inventors: 将靖山本
Original assignee: Kaijirushi Hamono Center KK
Current assignee: Kaijirushi Hamono Center KK
Priority date: 2003-04-18
Filing date: 2003-04-18
Publication date: 2009-12-02
Anticipated expiration: 2023-04-18
Also published as: JP2004313614A

Description

【０００１】
【発明の属する技術分野】
本発明は不使用時に折り畳むことができる爪切りに関するものである。
【０００２】
【従来の技術】
特許文献１では下記の爪切りが開示されている。
上刃体と下刃体とが開閉中心部により互いに回動可能に支持されている。この開閉中心部よりも先端側で上下両刃体に相対向して形成された刃先が互いに離間するように上下両刃体が付勢されている。この下刃体に対し相対動支持部で移動可能に支持された押圧操作てこが下刃体を上記付勢力に抗して押さえることができる使用状態と、この押圧操作てこを上刃体に対し折り畳むことができる不使用状態とを取り得るようになっている。
【０００３】
【特許文献１】
特許第２６４７５６１号公報
【０００４】
【発明が解決しようとする課題】
特許文献１にかかる爪切りは、下記＊の問題点を有している。
＊押圧操作てこにおいて、相対動支持部の力点部からてこ先端部に渡って形成された上壁には上下方向で貫通部分（図面中、回避孔２３）が形成されているため、強度が低下するおそれがあるとともに、使用時の感触が悪くなって操作性が悪くなる。
【０００５】
＊爪切りを使用状態から不使用状態にする際、押圧操作てこを滑り方向へ充分に移動させないと、てこ先端部が上刃体に当たるため、押圧操作てこと上刃体とを係止部（図面中、係止凹部４ａ，５ａ及び係止凸部１６ａ）で円滑に係止させることができなくなるおそれがあり、操作性が悪くなる。
【０００６】
＊押圧操作てこにおいて貫通部分（図面中、回避孔２３）からてこ先端部に渡って形成された上面は凹凸のない平滑面になっている。そのため、爪切りを使用状態から不使用状態にしたり不使用状態から使用状態にしたりする際、押圧操作てこを滑り方向へ確実に移動させることができなくなるおそれがあり、操作性が悪くなる。
【０００７】
＊切断後に爪の手入れをする際、爪切りとは別に爪やすりを用意する必要があり、操作性が悪くなる。
＊爪切りを使用状態から不使用状態にしたり不使用状態から使用状態にしたりする際、押圧操作てこの滑り方向を認識しにくいので、押圧操作てこを滑り方向へ確実に移動させることができなくなるおそれがあり、操作性が悪くなる。
【０００８】
＊刃先が押圧操作てこの滑り方向に対し直交する直線状に形成されているため、刃先を爪の形状に合わせたり爪に対し刃先の向きを変えて切断したりすることができず、切断操作が行いにくくなり、操作性が悪くなる。
【０００９】
この発明は、特に、切断後の爪の手入れをする際、爪切りとは別に爪やすりを用意する必要がなくなり、しかも両やすり面を形成した爪やすりを押圧操作てこに対し円滑に回動させることができるようにして、操作性を向上させることを目的としている。
【００１０】
【課題を解決するための手段及び発明の効果】
後記実施形態の図面（図１〜６、特に図６（ｂ）（ｃ）にかかる別例）の符号を援用して本発明を説明する。
【００３０】
請求項１の発明にかかる爪切りは、下記のように構成されている。
【００３１】
この爪切り（１）においては、上刃体（２）と下刃体（１３）とを開閉中心部（１９）により互いに回動可能に支持し、この開閉中心部（１９）よりも先端側で上下両刃体（２，１３）に相対向して形成した刃先（９，２０）を互いに離間させるように上下両刃体（２，１３）を付勢し、この下刃体（１３）に対し相対動支持部（２５）で移動可能に支持した押圧操作てこ（２２）が下刃体（１３）を上記付勢力に抗して押さえることができる使用状態（Ｐ）と、この押圧操作てこ（２２）を上刃体（２）に対し折り畳むことができる不使用状態（Ｒ）とを取り得るようにした。前記押圧操作てこ（２２）にあっては、前記相対動支持部（２５）からてこ先端部（２２ａ）に渡って形成した上壁（３１）の下面側に爪やすり（４２，４３）を設けた。
【００３３】
前記爪やすり（４３）は、押圧操作てこ（２２）の上壁（３１）の下面側に対し回動支持部（２５）で回動可能に支持され、この上壁（３１）の下面に面する収容状態（Ａ）と、この上壁（３１）の下面から離間する突出状態（Ｂ）とを取り得る。
【００３５】
前記爪やすり（４３）は回動支持部（４４）で支軸（４５）により押圧操作てこ（２２）の上壁（３１）の下面に沿って回動可能に支持されている。前記収容状態（Ａ）で爪やすり（４３）とこの上壁（３１）の下面との間には爪やすり（４３）の回動支持部（４４）の支軸（４５）と爪やすり（４３）の先端部（４３ａ）との間で隙間（Ｇ）を有している。この爪やすり（４３）には前記収容状態（Ａ）でこの上壁（３１）の下面に面する一方の片面と前記上刃体（２）に面する他方の片面とにそれぞれやすり面（４８，４９）を形成した。
【００３６】
請求項１の発明では、押圧操作てこ（２２）の爪やすり（４２，４３）により切断後の爪の手入れをする際、爪切り（１）とは別に爪やすりを用意する必要がなくなり、操作性を向上させることができる。また、両やすり面（４８，４９）を形成した爪やすり（４３）を押圧操作てこ（２２）に対し円滑に回動させることができ、操作性を向上させることができる。
【００３７】
請求項２の発明において、請求項１の発明にかかる爪やすり（４３）の先端部（４３ａ）は、押圧操作てこ（２２）の上壁（３１）の下面側に形成した位置決め突起（４６）により前記収容状態（Ａ）で保持される。
【００３８】
請求項２の発明では、爪やすり（４３）を収容状態（Ａ）で確実に保持することができ、操作性を向上させることができる。
【００４５】
【発明の実施の形態】
以下、本発明の一実施形態にかかる爪切りについて図面を参照して説明する。図１に示す爪切り１において上刃体２は前枠部３と後枠部４と左枠部５と右枠部６とからなる。この上刃体２内で各枠部３，４，５，６間には上下方向Ｚへ開放された収納室７が形成されている。左右両枠部５，６の前部には軸支孔８が形成されている。この軸支孔８よりも先端側（前側）で前枠部３の下側に上刃先９が形成されている。後枠部４は左右両枠部５，６の後部間の下側に設けられ、後枠部４の上面と左右両枠部５，６の内面との間が段差状になっている。左右両枠部５，６の後端部は後枠部４よりも後方へ若干突出している。左右両枠部５，６の後部の内側で後枠部４上の左右両側には係止突条１０（係止部）が形成され、この係止突条１０の後端部が後枠部４よりも後方へ若干突出している。この係止突条１０の後端部の下側には係止面１１が形成されている。図２（ａ）（ｂ）に示すように後枠部４上には板ばね１２が取着されている。この板ばね１２は左右両枠部５，６の内面間で前枠部３側へ延設されている。
【００４６】
図１に示す爪切り１において下刃体１３は、軸支孔１５を有する支持部１４と、この軸支孔１５よりも先端側（前側）に形成された刃部１６と、この軸支孔１５よりも基端側（後側）に形成されたてこ連結部１７とからなる。この支持部１４が前記上刃体２の左右両枠部５，６の内面間に嵌め込まれた状態で、それらの各軸支孔８，１５に支軸１８が挿着され、図２（ａ）（ｂ）に示すように上刃体２と下刃体１３とが開閉中心部１９である各軸支孔８，１５及び支軸１８を中心に上下方向Ｚへ互いに回動可能に支持されている。刃部１６の上側には下刃先２０が前記上刃体２の上刃先９に対向して形成されている。前記板ばね１２はてこ連結部１７の下側に当接し、この板ばね１２の付勢力により上下両刃体２，１３が互いに押し広げられてそれらの刃先９，２０が離間するようになっている。
【００４７】
前記下刃体１３のてこ連結部１７にはガイド長孔２１が前後方向Ｘへ延びるように形成されている。図１に示す押圧操作てこ２２の前部の左右両側には二股状の支持腕２３が形成され、この左右両支持腕２３間にてこ連結部１７が嵌め込まれた状態で、支軸２４がガイド長孔２１を通して左右両支持腕２３の軸支孔２３ａに挿着されて相対動支持部２５となっている。この相対動支持部２５においては、押圧操作てこ２２の両支持腕２３と下刃体１３のてこ連結部１７とが、ガイド長孔２１と支軸２４とにより、上下方向Ｚへ回動可能に支持されて回り対偶２５ａが構成されているとともに、ガイド長孔２１に沿う前後方向Ｘへ移動可能に支持されて滑り対偶２５ｂが構成されている。下刃体１３のてこ連結部１７上には支点部２６が形成されているとともに、ガイド長孔２１よりも後方で段差部２７が形成されている。押圧操作てこ２２の両支持腕２３間には支軸２４よりも後方で力点部２８が形成されている。押圧操作てこ２２の後端部（てこ先端部２２ａ）の下側には係止壁部２９（係止部）が形成され、この係止壁部２９の内側でその左右両側に形成された係止凹部３０に係止面３０ａが形成されている。
【００４８】
なお、前記上刃体２や下刃体１３や押圧操作てこ２２等は、ＭＩＭ（金属粉末射出成形）により製造されている。
さて、図２（ａ）（ｂ）に示す爪切り１の使用状態Ｐにおいては、押圧操作てこ２２の支軸２４が下刃体１３のガイド長孔２１の前側に位置し、押圧操作てこ２２の力点部２８が下刃体１３の段差部２７から離れててこ連結部１７上の支点部２６に支持されている。上下両刃体２，１３は板ばね１２の付勢力により互いに押し広げられ、上下両刃体２，１３の刃先９，２０が互いに離間している。下刃体１３のてこ連結部１７並びにそれに連結された押圧操作てこ２２は上刃体２の上方へ傾斜している。押圧操作てこ２２を下方へ押さえると、力点部２８により下刃体１３のてこ連結部１７が板ばね１２の付勢力に抗して下方へ押さえられて押圧操作てこ２２及び下刃体１３が開閉中心部１９を中心に回動し、上下両刃体２，１３の刃先９，２０が互いに当接する。
【００４９】
一方、不使用時には押圧操作てこ２２の支軸２４を下刃体１３のガイド長孔２１の後側に移動させ、押圧操作てこ２２の力点部２８を下刃体１３の支点部２６から離して下刃体１３の段差部２７に退避させる。押圧操作てこ２２を下方へ押さえると、図３（ａ）に示す爪切り１の折畳み途中状態Ｑで、上下両刃体２，１３の刃先９，２０が互いに当接するとともに、下刃体１３のてこ連結部１７と押圧操作てこ２２とが上刃体２の収納室７内に入れられる。押圧操作てこ２２の係止壁部２９は上刃体２の左右両枠部５，６の後端部間で上刃体２の左右両係止突条１０よりも若干後方に位置する。
【００５０】
さらに、図３（ｂ）及び図４（ａ）（ｂ）に示すように押圧操作てこ２２の支軸２４を下刃体１３のガイド長孔２１に沿って前方へ移動させると、押圧操作てこ２２の左右両係止凹部３０が上刃体２の左右両係止突条１０に係止されてそれらの係止面３０ａ，１１が互いに当接する。そのため、押圧操作てこ２２及び下刃体１３のてこ連結部１７が板ばね１２の付勢力により上方へ回動するのを阻止する。このようにして折り畳まれた爪切り１の不使用状態Ｒでは、下刃体１３及び押圧操作てこ２２が上刃体２内に入り込むので、上下両刃体２，１３及び押圧操作てこ２２をコンパクトに折り畳んで爪切りの厚みを薄くすることができる。また、不使用時に上下両刃体２，１３の刃先９，２０が互いに当接して閉じるので、折り畳んだ爪切りをポケット内に入れた時、刃先９，２０によりポケットを破損したり、刃先９，２０により指等に怪我をするおそれがなくなる。なお、前記上刃体２や下刃体１３や押圧操作てこ２２等は研磨処理されているため、爪切り１の全体に光沢があり、高級感をかもし出している。
【００５１】
前記爪切り１の不使用状態Ｒで押圧操作てこ２２の支軸２４を下刃体１３のガイド長孔２１に沿って後方へ移動させると、押圧操作てこ２２の左右両係止凹部３０が上刃体２の左右両係止突条１０から離れてそれらの係止面３０ａ，１１も互いに離れ、前記爪切り１の折畳み途中状態Ｑとなる。そして、押圧操作てこ２２を離すと、押圧操作てこ２２及び下刃体１３のてこ連結部１７が板ばね１２の付勢力により上方へ回動する。その後、押圧操作てこ２２の支軸２４を下刃体１３のガイド長孔２１に沿って前方へ移動させるとともに、押圧操作てこ２２の力点部２８を下刃体１３の段差部２７から離しててこ連結部１７上の支点部２６に支持すると、前記爪切り１の使用状態Ｐになる。
【００５２】
本実施形態にかかる爪切り１は、前述した従来の特許文献１（特許第２６４７５６１号公報）と比較して主に下記（イ）〜（へ）の点で異なる。
（イ）前記押圧操作てこ２２にあっては、図２（ａ）及び図４（ａ）（ｂ）に示すように、前記相対動支持部２５の力点部２８からてこ先端部２２ａに渡って形成された上壁３１の全体が上下方向Ｚで閉塞されている。ここに「閉塞」とは、上下方向Ｚで貫通部分が形成されていないことを意味する。
【００５３】
前記下刃体１３のてこ連結部１７の支点部２６においては、図２（ｂ）及び図３（ａ）（ｂ）に示すように、押圧操作てこ２２の力点部２８が係入されて支えられる係止溝３２が押圧操作てこ２２の左右両支持腕２３間で形成されている。この係止溝３２は、断面Ｖ状をなし、前記滑り対偶２５ｂの滑り方向（前後方向Ｘ）の両向きＸＦ，ＸＢのうち、この力点部２８を段差部２７側へ離脱させる下刃体１３の基端側向きＸＢへ案内する案内面３３を有している。
【００５４】
前記下刃体１３のてこ連結部１７の段差部２７は、図２（ｂ）及び図３（ａ）（ｂ）に示すように、前記支点部２６から下側へ延びる壁面３４と、この壁面３４の下端隅部３４ａから下刃体１３の基端側向きＸＢへ延びる底面３５とからなる。この壁面３４の下端隅部３４ａに対し下刃体１３の基端側向きＸＢで反対側になるこの底面３５の基端縁部３５ａには、この壁面３４に面する開放部３６が形成されている。ちなみに、この底面３５は凹凸のない平滑面になっている。
【００５５】
（ロ）図５（ａ）に示すように、前記上刃体２の後端部に形成された左右両係止突条１０の後端上縁部には当接部としての傾斜面３７が形成されている。図５（ｂ）に示すように、前記押圧操作てこ２２のてこ先端部２２ａに形成された係止壁部２９の内側下端縁部には当接部としての傾斜面３８が形成されている。図５（ｃ）に示すように、前記爪切り１を使用状態Ｐから前記爪切り１の折畳み途中状態Ｑに至る前の状態で、これらの傾斜面３７，３８が互いに当接すると、上刃体２に対し押圧操作てこ２２が案内されてこの折畳み途中状態Ｑとなる。
【００５６】
（ハ）前記押圧操作てこ２２にあっては、力点部２８からてこ先端部２２ａに渡って長手方向（前後方向Ｘ）へ延びるように形成された上壁３１の上面側で、力点部２８付近の滑止め用凹凸面部３９とてこ先端部２２ａ付近の滑止め用凹凸面部４０とが長手方向（前後方向Ｘ）で互いに分離して配置されて形成されている。力点部２８に隣接する滑止め用凹凸面部３９は、上刃体２の左右両枠部５，６間において長手方向（前後方向Ｘ）に対し直交する幅方向（左右方向Ｙ）の全域で幅方向（左右方向Ｙ）へ延設された筋状凹条部３９ａと筋状凸条部３９ｂとからなる。てこ先端部２２ａに隣接する滑止め用凹凸面部４０は、図示しない各種ロゴマ−ク（表示部）である。上刃体２の左右両枠部５，６にあって、押圧操作てこ２２の上壁３１の上面に隣接する上面５ａ，６ａは、凹凸のない平滑面である。
【００５７】
（ニ）前記押圧操作てこ２２にあっては、図６（ａ）に示すように、上壁３１の下面側に形成された凹所４１に爪やすり４２が嵌め込まれて貼着され、凹所４１から露出している。この爪やすり４２の外周縁４２ａは凹所４１の内周縁４１ａに合致している。
【００５８】
また、図６（ｂ）（ｃ）に示す別例では、爪やすり４３が押圧操作てこ２２の上壁３１の下面側に対し回動支持部４４の支軸４５により上壁３１の下面に沿って回動可能に支持され、この上壁３１の下面に面する収容状態Ａと、この上壁３１の下面から離間する突出状態Ｂとを取り得る。この爪やすり４３の先端部４３ａは、上壁３１の下面側に形成された左右両位置決め突起４６により前記収容状態Ａで保持される。この回動支持部４４で上壁３１の下面に膨出部４７が形成され、爪やすり４３がこの膨出部４７に載せられているため、前記収容状態Ａで爪やすり４３と上壁３１の下面との間には回動支持部４４の支軸４５と爪やすり４３の先端部４３ａとの間で隙間Ｇが生じる。この爪やすり４３には前記収容状態Ａで上壁３１の下面に面する一方の片面と上刃体２に面する他方の片面とにそれぞれやすり面４８，４９が形成されている。
【００５９】
（ホ）図４（ｃ）（ｄ）（ｅ）（ｆ）に示す別例では、前記押圧操作てこ２２の上壁３１の上面側にあって、てこ先端部２２ａに隣接して設けた前記滑止め用凹凸面部４０に代えて、指示表示部５０が設けられている。この指示表示部５０には、下刃体１３に対する押圧操作てこ２２の相対動方向である滑り対偶２５ｂの滑り方向（前後方向Ｘ）の両向きＸＦ，ＸＢを示す矢印形態が明示されている。この指示表示部５０の矢印形態については、凸状部と凹状部と平面部（印刷等）とのうち、少なくともいずれかのものにより設けられている。この指示表示部５０は滑止め用凹凸面部として兼用することができる。
【００６０】
（へ）図４（ａ）（ｂ）に示すように、前記上下両刃体２，１３の刃先９，２０は、延設方向の両刃縁端部９ａ，２０ａとこの両刃縁端部９ａ，２０ａ間の中間部９ｂ，２０ｂとを結ぶ両刃縁５１，５２からなる。この両刃縁５１，５２は下刃体１３に対する押圧操作てこ２２の相対動方向（前後方向Ｘ）に対し傾斜している。例えば、この両刃縁５１，５２からなる刃先９，２０は、両刃縁端部９ａ，２０ａを結ぶ直線Ｌよりも内側に凹んでいたり、その直線Ｌ上にある。
【図面の簡単な説明】
【図１】本実施形態にかかる爪切りを示す分解斜視図である。
【図２】（ａ）は上記爪切りの使用状態を示す組付斜視図であり、（ｂ）は同じく組付断面図である。
【図３】（ａ）は上記爪切りの折畳み途中状態を示す組付断面図であり、（ｂ）は上記爪切りの不使用状態を示す組付断面図である。
【図４】（ａ）は上記爪切りの不使用状態を示す組付斜視図であり、（ｂ）は同じく組付平面図であり、（ｃ）（ｄ）（ｅ）（ｆ）はそれぞれ上記爪切りの押圧操作てこの別例を示す部分平面図である。
【図５】（ａ）は上記爪切りの上刃体を示す部分斜視図であり、（ｂ）は上記爪切りの押圧操作てこを示す部分斜視図であり、（ｃ）は上記爪切りにおいて使用状態から不使用状態に至る途中の状態を示す部分断面図である。
【図６】（ａ）は上記爪切りの押圧操作てこの下側を示す底面図であり、（ｂ）は上記爪切りの押圧操作てこの別例においてその下側を示す底面図であり、（ｃ）は（ｂ）の押圧操作てこを長手方向で切断した断面図である。
【符号の説明】
１…爪切り、２…上刃体、５…左枠部、５ａ…左枠部の上面、６…右枠部、６ａ…右枠部の上面、７…収納室、９…上刃先、９ａ…刃縁端部、９ｂ…中間部、１０…係止突条（係止部）、１１…係止面、１２…板ばね、１３…下刃体、１７…てこ連結部、１９…開閉中心部、２０…下刃先、２０ａ…刃縁端部、２０ｂ…中間部、２２…押圧操作てこ、２２ａ…てこ先端部、２３…支持腕、２４ａ…回動中心線、２５…相対動支持部、２５ａ…回り対偶、２５ｂ…滑り対偶、２６…支点部、２７…段差部、２８…力点部、２９…係止壁部（係止部）、３１…押圧操作てこの上壁、３２…係止溝、３３…案内面、３４…壁面、３４ａ…下端隅部、３５…底面、３５ａ…基端縁部、３６…開放部、３７，３８…傾斜面（当接部）、３９…滑止め用凹凸面部、３９ａ…筋状凹条部、３９ｂ…筋状凸条部、４０…滑止め用凹凸面部、４1…凹所、４１ａ…内周縁、４２…爪やすり、４２ａ…外周縁、４３…爪やすり、４３ａ…先端部、４４…回動支持部、４５…支軸、４６…位置決め突起、４８，４９…やすり面、５０…指示表示部、５１，５２…刃縁、Ｐ…使用状態、Ｑ…折畳み途中状態、Ｒ…不使用状態、Ａ…爪やすりの収容状態、Ｂ…爪やすりの突出状態、Ｇ…隙間、Ｌ…直線、Ｘ…前後方向(滑り方向、長手方向、相対動方向)、ＸＦ，ＸＢ…向き、Ｙ…左右方向（幅方向）、Ｚ…上下方向。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a nail clipper that can be folded when not in use.
[0002]
[Prior art]
Patent Document 1 discloses the following nail clippers.
The upper blade body and the lower blade body are rotatably supported by the opening / closing center portion. The upper and lower blades are urged so that the cutting edges formed opposite to the upper and lower blades on the tip side of the opening / closing center portion are separated from each other. A pressing operation lever supported so as to be movable relative to the lower blade body by a relative movement support portion can press the lower blade body against the urging force, and the pressing operation lever against the upper blade body. It can be taken into a non-use state that can be folded.
[0003]
[Patent Document 1]
Japanese Patent No. 2647561 [0004]
[Problems to be solved by the invention]
The nail clipper according to Patent Document 1 has the following problems *.
* In the pressing lever, the upper wall formed from the point of force of the relative motion support part to the tip of the lever has a penetrating portion (in the drawing, avoidance hole 23) formed in the vertical direction, so the strength is reduced. In addition, there is a risk that the feel during use will deteriorate and the operability will deteriorate.
[0005]
* When changing the nail clipper from the use state to the non-use state, if the lever is not moved sufficiently in the sliding direction, the tip of the lever will come into contact with the upper blade body. In the drawing, there is a possibility that the locking recesses 4a and 5a and the locking projection 16a) cannot be smoothly locked, and the operability is deteriorated.
[0006]
* In the pressing lever, the upper surface formed from the penetrating portion (the avoidance hole 23 in the drawing) to the tip of the lever is a smooth surface without unevenness. Therefore, when the nail clipper is changed from the use state to the non-use state or from the non-use state to the use state, there is a possibility that the pressing lever cannot be reliably moved in the sliding direction, and the operability is deteriorated.
[0007]
* When cleaning the nail after cutting, it is necessary to prepare a nail file separately from the nail clipper, resulting in poor operability.
* When changing the nail clipper from the use state to the non-use state or from the non-use state to the use state, it is difficult to recognize the sliding direction by pressing, so the pressing lever cannot be moved reliably in the sliding direction. There is a risk that the operability will deteriorate.
[0008]
* Because the cutting edge is formed in a straight line perpendicular to the sliding direction by pressing, the cutting edge cannot be cut according to the shape of the nail or by changing the direction of the cutting edge with respect to the nail. Is difficult to perform and the operability is deteriorated.
[0009]
In particular, the present invention eliminates the need to prepare a nail file separately from the nail clipper when cleaning the nail after cutting, and smoothly rotates the nail file having both filed surfaces against the lever by pressing. The purpose is to improve the operability .
[0010]
[Means for Solving the Problems and Effects of the Invention]
Below the embodiment of the drawings (FIGS. 1-6, especially FIG. 6 (b) (c) Another example according to) it describes the present invention with the aid of codes.
[0030]
The nail clipper according to the invention of claim 1 is configured as follows.
[0031]
In the nail clipper (1), the upper blade body (2) and the lower blade body (13) are rotatably supported by the opening / closing center portion (19), and the tip side is closer to the opening / closing center portion (19). The upper and lower blades (2, 13) are urged so as to separate the blade edges (9, 20) formed opposite to the upper and lower blades (2, 13) with respect to the lower blade (13). A use state (P) in which the pressing lever (22) supported movably by the relative movement support portion (25) can press the lower blade body (13) against the urging force, and the pressing lever ( 22) can be in a non-use state (R) in which the upper blade (2) can be folded. In the pressing lever (22), nail files (42, 43) are provided on the lower surface side of the upper wall (31) formed from the relative movement support portion (25) to the lever tip portion (22a). It was.
[0033]
The nail file (43) is rotatably supported by a rotation support portion (25) with respect to the lower surface side of the upper wall (31) of the pressing lever (22), and the surface of the nail file (43) faces the lower surface of the upper wall (31). And a protruding state (B) separated from the lower surface of the upper wall (31).
[0035]
The nail file (43) is rotatably supported by the rotation support portion (44) along the lower surface of the upper wall (31) of the pressing lever (22) by the support shaft (45). Between the nail file (43) and the lower surface of the upper wall (31) in the accommodation state (A), the support shaft (45) of the rotation support portion (44) of the nail file (43) and the nail file (43 ) Has a gap (G) with the tip (43a). In the nail file (43), in the accommodation state (A), a file surface (48) is provided on one side facing the lower surface of the upper wall (31) and the other surface facing the upper blade body (2). , 49).
[0036]
According to the first aspect of the present invention, it is not necessary to prepare a nail file separately from the nail clipper (1) when cleaning the nail after cutting with the nail file (42, 43) of the pressing lever (22). Can be improved. In addition, the nail file (43) formed with both file surfaces (48, 49) can be smoothly rotated with respect to the pressing lever (22), and the operability can be improved.
[0037]
In the second aspect of the present invention, the tip (43a) of the nail file (43) according to the first aspect of the present invention has a positioning projection (46) formed on the lower surface side of the upper wall (31) of the pressing lever (22). Is held in the accommodation state (A).
[0038]
In the invention of claim 2 can be reliably held by housing a nail file (43) state (A), Ru can be improved operability.
[0045]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a nail clipper according to an embodiment of the present invention will be described with reference to the drawings. In the nail clipper 1 shown in FIG. 1, the upper blade body 2 includes a front frame part 3, a rear frame part 4, a left frame part 5, and a right frame part 6. A storage chamber 7 opened in the vertical direction Z is formed between the frame portions 3, 4, 5 and 6 in the upper blade body 2. A shaft support hole 8 is formed in the front part of the left and right frame parts 5 and 6. An upper blade edge 9 is formed on the tip side (front side) of the shaft support hole 8 and below the front frame portion 3. The rear frame portion 4 is provided below the rear portions of the left and right frame portions 5 and 6, and a step is formed between the upper surface of the rear frame portion 4 and the inner surfaces of the left and right frame portions 5 and 6. The rear end portions of the left and right frame portions 5 and 6 slightly protrude rearward from the rear frame portion 4. Locking ridges 10 (locking portions) are formed on the left and right sides of the rear frame portion 4 inside the rear portions of the left and right frame portions 5 and 6, and the rear end portion of the locking protrusions 10 is the rear frame portion. It projects slightly rearward than 4. A locking surface 11 is formed below the rear end of the locking ridge 10. As shown in FIGS. 2 (a) and 2 (b), a leaf spring 12 is attached on the rear frame portion 4. The leaf spring 12 extends toward the front frame portion 3 between the inner surfaces of the left and right frame portions 5 and 6.
[0046]
In the nail clipper 1 shown in FIG. 1, the lower blade body 13 includes a support portion 14 having a shaft support hole 15, a blade portion 16 formed on the front end side (front side) of the shaft support hole 15, and the shaft support hole. The lever connecting portion 17 is formed on the base end side (rear side) with respect to 15. In a state where the support portion 14 is fitted between the inner surfaces of the left and right frame portions 5 and 6 of the upper blade body 2, a support shaft 18 is inserted into each of the shaft support holes 8 and 15, and FIG. ) As shown in (b), the upper blade body 2 and the lower blade body 13 are supported so as to be pivotable with respect to each other in the vertical direction Z around the shaft support holes 8 and 15 and the support shaft 18 as the opening / closing center portion 19. ing. A lower blade edge 20 is formed on the upper side of the blade portion 16 so as to face the upper blade edge 9 of the upper blade body 2. The leaf spring 12 abuts on the lower side of the lever connecting portion 17, and the upper and lower blade bodies 2 and 13 are pushed apart by the urging force of the leaf spring 12 so that the blade edges 9 and 20 are separated from each other. .
[0047]
A guide elongated hole 21 is formed in the lever connecting portion 17 of the lower blade body 13 so as to extend in the front-rear direction X. A bifurcated support arm 23 is formed on the left and right sides of the front portion of the pressing lever 22 shown in FIG. 1, and the support shaft 24 guides the lever connecting portion 17 between the left and right support arms 23. A relative motion support portion 25 is formed by being inserted into the shaft support holes 23 a of the left and right support arms 23 through the long holes 21. In the relative movement support portion 25, both the support arms 23 of the pressing lever 22 and the lever connection portion 17 of the lower blade body 13 can be rotated in the vertical direction Z by the guide long hole 21 and the support shaft 24. While being supported, a turning pair 25a is configured, and a sliding pair 25b is configured to be supported so as to be movable in the front-rear direction X along the guide long hole 21. A fulcrum portion 26 is formed on the lever connecting portion 17 of the lower blade body 13, and a step portion 27 is formed behind the guide long hole 21. A force point portion 28 is formed between the support arms 23 of the pressing lever 22 behind the support shaft 24. A locking wall portion 29 (locking portion) is formed below the rear end portion (lever tip portion 22a) of the pressing operation lever 22, and the engagement walls 29 are formed on the left and right sides of the locking wall portion 29. A locking surface 30 a is formed in the locking recess 30.
[0048]
The upper blade body 2, the lower blade body 13, the pressing lever 22 and the like are manufactured by MIM (metal powder injection molding).
2A and 2B, in the use state P of the nail clipper 1, the support shaft 24 of the pressing lever 22 is positioned in front of the guide long hole 21 of the lower blade body 13, and the pressing lever 22 is pressed. The force point 28 is separated from the step portion 27 of the lower blade 13 and is supported by the fulcrum portion 26 on the lever connecting portion 17. The upper and lower blades 2 and 13 are pushed apart by the urging force of the leaf spring 12, and the blade edges 9 and 20 of the upper and lower blades 2 and 13 are separated from each other. The lever connecting portion 17 of the lower blade body 13 and the pressing operation lever 22 connected thereto are inclined above the upper blade body 2. When the pressing lever 22 is pressed downward, the lever connecting portion 17 of the lower blade body 13 is pressed downward against the urging force of the leaf spring 12 by the force point portion 28, and the pressing operation lever 22 and the lower blade body 13 are opened and closed. The blades 9 and 20 of the upper and lower blade bodies 2 and 13 are brought into contact with each other by rotating around the center portion 19.
[0049]
On the other hand, when not in use, the support shaft 24 of the pressing lever 22 is moved to the rear side of the guide elongated hole 21 of the lower blade body 13, and the power point portion 28 of the pressing lever 22 is separated from the fulcrum portion 26 of the lower blade body 13. The stepped portion 27 of the lower blade body 13 is retracted. When the pressing lever 22 is pressed downward, the cutting edges 9 and 20 of the upper and lower blade bodies 2 and 13 come into contact with each other and the lever of the lower blade body 13 is brought into contact with each other in the folding state Q of the nail clipper 1 shown in FIG. The connecting portion 17 and the pressing lever 22 are placed in the storage chamber 7 of the upper blade body 2. The locking wall 29 of the pressing lever 22 is located slightly behind the left and right locking ridges 10 of the upper blade 2 between the rear end portions of the left and right frame portions 5 and 6 of the upper blade 2.
[0050]
Further, when the support shaft 24 of the pressing lever 22 is moved forward along the guide long hole 21 of the lower blade body 13 as shown in FIGS. The left and right locking recesses 30 are locked to the left and right locking ridges 10 of the upper blade body 2, and the locking surfaces 30a and 11 come into contact with each other. Therefore, the pressing lever 22 and the lever connecting portion 17 of the lower blade body 13 are prevented from rotating upward by the urging force of the leaf spring 12. In the unused state R of the nail clipper 1 folded in this way, the lower blade 13 and the pressing lever 22 enter the upper blade 2, so that the upper and lower blades 2, 13 and the pressing lever 22 are made compact. It can be folded to reduce the thickness of the nail clippers. Further, since the cutting edges 9 and 20 of the upper and lower blade bodies 2 and 13 are in contact with each other and closed when not in use, when the folded nail clipper is put in the pocket, the cutting edges 9 and 20 may damage the pocket, 20 eliminates the risk of injury to fingers or the like. Since the upper blade body 2, the lower blade body 13, the pressing lever 22 and the like are polished, the entire nail clipper 1 is glossy and brings out a high-class feeling.
[0051]
When the support shaft 24 of the pressing lever 22 is moved rearward along the guide slot 21 of the lower blade 13 in the non-use state R of the nail clipper 1, the left and right locking recesses 30 of the pressing lever 22 are raised. Apart from the left and right locking ridges 10 of the blade body 2, the locking surfaces 30 a and 11 are also separated from each other, and the nail clipper 1 is in the middle of folding Q. When the pressing lever 22 is released, the pressing lever 22 and the lever connecting portion 17 of the lower blade body 13 are rotated upward by the urging force of the leaf spring 12. Thereafter, the support shaft 24 of the pressing lever 22 is moved forward along the guide slot 21 of the lower blade body 13, and the power point portion 28 of the pressing lever 22 is moved away from the step portion 27 of the lower blade body 13. When it is supported by the fulcrum portion 26 on the connecting portion 17, the nail clipper 1 is in use state P.
[0052]
The nail clipper 1 according to the present embodiment is different from the above-described conventional Patent Document 1 (Japanese Patent No. 2647561) mainly in the following points (a) to ( f).
(A) In the pressing lever 22, as shown in FIGS. 2 (a) and 4 (a) and 4 (b), the force application portion 28 of the relative motion support portion 25 extends to the lever tip portion 22a. The entire formed upper wall 31 is closed in the vertical direction Z. Here, “blocking” means that no penetrating portion is formed in the vertical direction Z.
[0053]
At the fulcrum portion 26 of the lever connecting portion 17 of the lower blade 13, as shown in FIGS. 2 (b) and 3 (a) and 3 (b), a force point portion 28 of the pressing lever 22 is engaged and supported. A locking groove 32 is formed between the left and right support arms 23 of the pressing lever 22. The locking groove 32 has a V-shaped cross section, and the lower blade body 13 is configured to separate the force point portion 28 toward the stepped portion 27 side in both directions XF and XB of the sliding pair 25b in the sliding direction (front-rear direction X). It has the guide surface 33 which guides to XB toward the base end side.
[0054]
As shown in FIGS. 2B and 3A and 3B, the stepped portion 27 of the lever connecting portion 17 of the lower blade body 13 includes a wall surface 34 extending downward from the fulcrum portion 26, and this wall surface. A bottom surface 35 extending from the lower end corner portion 34 a of the lower end body 34 toward the base end side XB of the lower blade body 13. An open portion 36 facing the wall surface 34 is formed on the base edge 35 a of the bottom surface 35 which is opposite to the lower end corner portion 34 a of the wall surface 34 in the base end direction XB of the lower blade body 13. Yes. Incidentally, the bottom surface 35 is a smooth surface without unevenness.
[0055]
(B) As shown in FIG. 5A, an inclined surface 37 as a contact portion is formed on the upper edge of the rear end of the left and right locking projections 10 formed at the rear end of the upper blade body 2. Is formed. As shown in FIG. 5 (b), an inclined surface 38 as an abutting portion is formed at the inner lower end edge of the locking wall portion 29 formed at the lever tip 22 a of the pressing lever 22. As shown in FIG. 5 (c), when the inclined surfaces 37 and 38 come into contact with each other in a state before the nail clipper 1 reaches the halfway folding state Q of the nail clipper 1 from the use state P, the upper blade A pressing operation lever 22 is guided to the body 2 and this folding state Q is reached.
[0056]
(C) In the pressing lever 22, the vicinity of the force point 28 on the upper surface side of the upper wall 31 formed so as to extend in the longitudinal direction (front-rear direction X) from the force point 28 to the lever tip 22a. The anti-slip uneven surface portion 39 and the anti-slip uneven surface portion 40 in the vicinity of the lever tip 22a are formed separately from each other in the longitudinal direction (front-rear direction X). The non-slip uneven surface portion 39 adjacent to the force point portion 28 has a width across the entire region in the width direction (left-right direction Y) perpendicular to the longitudinal direction (front-rear direction X) between the left and right frame portions 5, 6 of the upper blade body 2. It consists of a streak-like concave part 39a and a streak-like convex part 39b extended in the direction (left-right direction Y). The anti-slip concavo-convex surface portion 40 adjacent to the lever tip 22a is various logo marks (display portions) (not shown). The upper surfaces 5a and 6a adjacent to the upper surface of the upper wall 31 of the pressing lever 22 in the left and right frame portions 5 and 6 of the upper blade body 2 are smooth surfaces without irregularities.
[0057]
(D) In the pressing lever 22, as shown in FIG. 6 (a), a nail file 42 is fitted in and attached to a recess 41 formed on the lower surface side of the upper wall 31, and the recess 41 is exposed. The outer peripheral edge 42 a of the nail file 42 matches the inner peripheral edge 41 a of the recess 41.
[0058]
In addition, in another example shown in FIGS. 6B and 6C, the nail file 43 is moved along the lower surface of the upper wall 31 by the support shaft 45 of the rotation support portion 44 with respect to the lower surface side of the upper wall 31 of the pressing lever 22. The housing state A is supported so as to be rotatable and faces the lower surface of the upper wall 31, and the protruding state B is separated from the lower surface of the upper wall 31. The front end portion 43 a of the nail file 43 is held in the accommodation state A by the left and right positioning protrusions 46 formed on the lower surface side of the upper wall 31. The swivel support portion 44 forms a bulging portion 47 on the lower surface of the upper wall 31, and the nail file 43 is placed on the bulging portion 47, so that the nail file 43 and the upper wall 31 are in the accommodated state A. A gap G is formed between the lower surface and the support shaft 45 of the rotation support portion 44 and the tip end portion 43 a of the nail file 43. In the nail file 43, file surfaces 48 and 49 are formed on one side facing the lower surface of the upper wall 31 and the other side facing the upper blade body 2 in the accommodated state A, respectively.
[0059]
(E) In another example shown in FIGS. 4C, 4D, 4E, and 4F, the pressing operation lever 22 is provided on the upper surface side of the upper wall 31 and adjacent to the lever tip 22a. An instruction display unit 50 is provided in place of the non-slip uneven surface portion 40. The instruction display unit 50 clearly shows an arrow form indicating both directions XF and XB in the sliding direction (front-rear direction X) of the sliding pair 25b which is the relative movement direction of the pressing lever 22 with respect to the lower blade 13. About the arrow form of this instruction | indication display part 50, it is provided by at least any one of a convex part, a concave part, and a plane part (printing etc.). The instruction display unit 50 can also be used as a non-slip uneven surface part.
[0060]
(F) As shown in FIGS. 4 (a) and 4 (b), the blade edges 9, 20 of the upper and lower blade bodies 2, 13 have both blade edge end portions 9a, 20a in the extending direction and both blade edge end portions 9a, 20a. It consists of double-edged edges 51, 52 connecting the intermediate portions 9b, 20b therebetween. Both the blade edges 51 and 52 are inclined with respect to the relative movement direction (front-rear direction X) of the pressing operation lever 22 with respect to the lower blade body 13. For example, the blade edges 9 and 20 composed of both the blade edges 51 and 52 are recessed inward or on the straight line L connecting the both blade edge ends 9a and 20a.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a nail clipper according to the present embodiment.
FIG. 2 (a) is an assembled perspective view showing the usage state of the nail clipper, and FIG. 2 (b) is an assembled sectional view.
3A is an assembled cross-sectional view showing a state where the nail clipper is being folded, and FIG. 3B is an assembled cross-sectional view showing a state where the nail clipper is not used.
4 (a) is an assembled perspective view showing the nail clipper in a non-use state, FIG. 4 (b) is an assembled plan view, and FIG. 4 (c) (d) (e) (f) It is a partial top view which shows this another example by pressing operation of the said nail clipper.
5A is a partial perspective view showing an upper blade body of the nail clipper, FIG. 5B is a partial perspective view showing a lever for pressing the nail clipper, and FIG. It is a fragmentary sectional view which shows the state in the middle from a use state to a non-use state.
6A is a bottom view showing the lower side of the nail clipper pressing operation, and FIG. 6B is a bottom view showing the lower side of the nail clipper pressing operation in another example; (C) is sectional drawing which cut | disconnected the pressing operation lever of (b) in the longitudinal direction.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Nail clipper, 2 ... Upper blade body, 5 ... Left frame part, 5a ... Upper surface of left frame part, 6 ... Right frame part, 6a ... Upper surface of right frame part, 7 ... Storage chamber, 9 ... Upper blade edge, 9a ... blade edge end portion, 9b ... intermediate portion, 10 ... locking protrusion (locking portion), 11 ... locking surface, 12 ... leaf spring, 13 ... lower blade body, 17 ... lever connecting portion, 19 ... opening / closing center , 20 ... lower blade edge, 20a ... edge edge part, 20b ... intermediate part, 22 ... pressing lever, 22a ... lever tip part, 23 ... support arm, 24a ... rotation center line, 25 ... relative motion support part, 25a ... turning pair, 25b ... sliding pair, 26 ... fulcrum part, 27 ... step part, 28 ... force point part, 29 ... locking wall part (locking part), 31 ... pressing operation, this upper wall, 32 ... locking Groove, 33 ... guide surface, 34 ... wall surface, 34a ... lower end corner, 35 ... bottom surface, 35a ... base end edge, 36 ... open portion, 37, 38 ... inclined surface (contact portion), 39 ... non-slip Concave Surface part, 39a ... Streaky concave part, 39b ... Streaky convex part, 40 ... Non-slip surface part for anti-slip, 41 ... Recess, 41a ... Inner edge, 42 ... Nail file, 42a ... Outer edge, 43 ... Nail file , 43a ... tip part, 44 ... rotation support part, 45 ... spindle, 46 ... positioning projection, 48, 49 ... file surface, 50 ... instruction display part, 51, 52 ... blade edge, P ... use state, Q ... Folding state, R: Unused state, A: Nail file accommodation state, B: Nail file protruding state, G ... Gap, L ... Straight line, X ... Front-back direction (sliding direction, longitudinal direction, relative movement direction), XF, XB ... direction, Y ... left-right direction (width direction), Z ... up-down direction.

Claims

The upper and lower blade bodies support the upper blade body and the lower blade body so as to be rotatable with respect to each other by the opening / closing center portion, and the blade edges formed opposite to the upper and lower blade bodies on the tip side of the opening / closing center portion are separated from each other. The pressing operation lever supported by the lower blade body so as to be movable with respect to the lower blade body can press the lower blade body against the urging force, and the pressing operation lever is raised. In the nail clipper that can take the unused state that can be folded against the blade body ,
In the pressing lever, a nail file is rotated along the lower surface of the upper wall by a pivot at the rotation support portion against the lower surface side of the upper wall formed from the relative movement support portion to the tip of the lever. Support movably,
This nail file takes a storing state facing the lower surface of the upper wall by pressing and a protruding state spaced from the lower surface of the upper wall,
There is a gap between the support shaft of the nail file rotation support portion and the tip of the nail file between the nail file and the lower surface of the upper wall by pressing operation with the nail file in the accommodated state,
The nail file is characterized in that a file surface is formed on one side facing the lower surface of the upper wall and the other side facing the upper blade body by pressing in the housed state. Nail clippers to do.

The nail clipper according to claim 1, wherein a tip portion of the nail file is held in the accommodated state by a positioning protrusion formed on a lower surface side of the upper wall by a pressing operation .