JP4264233B2

JP4264233B2 - Cutlery handle

Info

Publication number: JP4264233B2
Application number: JP2002233582A
Authority: JP
Inventors: 育雄池垣; 勝也田中
Original assignee: Kaijirushi Hamono Center KK
Current assignee: Kaijirushi Hamono Center KK
Priority date: 2002-08-09
Filing date: 2002-08-09
Publication date: 2009-05-13
Anticipated expiration: 2022-08-09
Also published as: JP2004074305A

Description

【０００１】
【発明の属する技術分野】
本発明は、刀身の基端口部から延設した中子軸の外周に把持部を挿嵌するとともにこの中子軸の尻部に尻蓋を連結した刃物の柄に関するものである。
【０００２】
【従来の技術及び発明が解決しようとする課題】
従来、実公平１−１２６９８号公報に示す包丁は、同公報の図面に示すように、下記＊の点で劣る。
【０００３】
＊ナット１３と柄尻１４とが別々に分離して設けられ、このナット１３が凹部ｅ内に埋め込まれてこの凹部ｅがこの柄尻１４により閉塞されている。そのため、柄尻１４を柄１２から外しても凹部ｅ内のナット１３を柄１２の外側から触れにくくなってナット１３及び柄１２の着脱操作が行いにくくなる。
【０００４】
＊中子軸３側にネジｂ（雄ねじ部）を設け、このネジｂに前記ナット１３を螺合している。そのため、このネジｂが長過ぎる場合にこのナット１３から突出するおそれがある。例えば、このナット１３を柄１２から露出させた場合には、袋ナットを採用してこのネジｂを隠さない限りこのネジｂが柄１２の外側から見えるので、外観が悪くなるし、袋ナットを採用した場合には袋ナットの雌ねじ孔を十分深くしないと締め込み量が不足するおそれがある。そのため、前記凹部ｅ内にナット１３を埋め込む必要がある。
【０００５】
この発明は、尻蓋（前記ナット１３に該当）を把持部（前記柄１２に該当）の尻部の外側から触れ易くしてこの尻蓋及び把持部の着脱操作を行い易くすることを第一の目的としている。また、この発明は、尻蓋（前記ナット１３に該当）を把持部（前記柄１２に該当）から露出させた場合でも雄ねじ部（前記ネジｂに該当）が把持部の外側から見えにくくして外観を良くすることを第二の目的としている。
【０００６】
【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１〜５に示す第一実施形態、図６に示す第二実施形態、図７に示す第二実施形態の別例１、図８に示す第二実施形態の別例２、図９に示す第三実施形態）の符号を援用して、第三実施形態にのみ対応する本発明を説明する。
【０００７】
請求項１の発明にかかる刃物の柄（Ｈ）は、第三実施形態にのみ対応し、下記のように構成されている。
【０００８】
刀身（１）の基端口部（５）から延設した中子軸（２）の外周に把持部（３）を着脱可能に挿嵌している。この中子軸（２）の尻部（１２）に尻蓋（４）を着脱可能に連結している。この尻蓋（４）をこの把持部（３）の尻部（１８）の外側でこの把持部（３）の尻部（１８）の端面（２５）側に隣接するように並べて露出させている。この尻蓋（４）と前記刀身（１）の基端口部（５）との間で把持部（３）を設けている。前記把持部（３）の尻部（１８）の端面（２５）側に尻側着座凹部（２６）を設けている。この尻側着座凹部（２６）は、前記中子軸（２）が貫通する挿嵌孔（１９）の内周端縁部（内周部２１の端縁部）から斜状に広がる環状の嵌合側壁部（３２）と、この嵌合側壁部（３２）に面して環状嵌合側壁部（３２）の外側へ開放した開口部（３３）とを有している。前記尻蓋（４）は、前記中子軸（２）の尻部（１２）に螺合されて連結された状態で、前記尻側着座凹部（２６）に対しその開口部（３３）から嵌め込まれて、この尻側着座凹部（２６）の外側へその開口部（３３）から突出するとともに、この尻側着座凹部（２６）の環状嵌合側壁部（３２）の内側で支持される嵌合部（３８）を有している。
【０００９】
請求項１の発明では、中子軸（２）に対し把持部（３）及び尻蓋（４）を着脱させて柄（Ｈ）の分解及び組付けを行うことができる。そのため、把持部（３）及び尻蓋（４）の形態の変更や、刀身（１）及び中子軸（２）の形態の変更や、柄（Ｈ）の重心位置の変更や、材質に応じた分別廃棄などを容易に行うことができる。しかも、尻蓋（４）を把持部（３）の尻部（１８）の端面（２５）側に隣接するように並べて露出させているので、前述した従来技術と比較して、尻蓋（４）を把持部（３）の尻部（１８）の外側から触れ易くなって尻蓋（４）及び把持部（３）の着脱操作が行い易くなる。また、把持部（３）の尻部（１８）と尻蓋（４）との境に隙間が生じにくくなり、柄（Ｈ）内に埃や水分などが侵入しにくくなる。
【００１３】
請求項２の発明にかかる刃物の柄（Ｈ）は、は、第三実施形態にのみ対応し、下記のように構成されている。
【００１４】
刀身（１）の基端口部（５）から延設した中子軸（２）の外周に把持部（３）を着脱可能に挿嵌している。この中子軸（２）の尻部（１２）に設けた雌ねじ部（１６）に対し、尻蓋（４）に設けた雄ねじ部（４０）を着脱可能に螺合している。この尻蓋（４）をこの把持部（３）の尻部（１８）の外側でこの把持部（３）の尻部（１８）の端面（２５）側に隣接するように並べて露出させている。この尻蓋（４）と前記刀身（１）の基端口部(５)との間で把持部(３)を設けている。前記把持部（３）の尻部（１８）の端面（２５）側に尻側着座凹部（２６）を設けている。この尻側着座凹部（２６）は、前記中子軸（２）が貫通する挿嵌孔（１９）の内周端縁部（内周部２１の端縁部）から斜状に広がる環状の嵌合側壁部（３２）と、この嵌合側壁部（３２）に面して環状嵌合側壁部（３２）の外側へ開放した開口部（３３）とを有している。前記尻蓋（４）は、前記中子軸（２）の尻部（１２）に螺合されて連結された状態で、前記尻側着座凹部（２６）に対しその開口部（３３）から嵌め込まれて、この尻側着座凹部（２６）の外側へその開口部（３３）から突出するとともに、この尻側着座凹部（２６）の環状嵌合側壁部（３２）の内側で支持される嵌合部（３８）を有している。
請求項２の発明では、請求項１の発明の効果に加え、中子軸（２）に対し把持部（３）及び尻蓋（４）を着脱させて柄（Ｈ）の分解及び組付けを行うことができる。そのため、把持部（３）及び尻蓋（４）の形態の変更や、刀身（１）及び中子軸（２）の形態の変更や、柄（Ｈ）の重心位置の変更や、材質に応じた分別廃棄などを容易に行うことができる。しかも、中子軸（２）側に雌ねじ部（１６）を設けるとともに尻蓋（４）側に雄ねじ部（４０）を設けているので、前述した従来技術と比較して、尻蓋（４）を把持部（３）から露出させた場合でも雄ねじ部（４０）が把持部（３）の外側から見えにくくなって外観を良くすることができる。
【００４２】
【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刃物の柄について図１〜５を参照して説明する。
【００４３】
図１に示すように、この刃物は、互いに分離して設けられた刀身１と中子軸２と把持部３と尻蓋４とからなる。図２に示すように、刃物の柄Ｈは、この刀身１の基端口部５にこの中子軸２と把持部３と尻蓋４とが組み付けられて構成されている。
【００４４】
前記刀身１は、金属からなり、鍛造により成形される。この刀身１の基端口部５においては、端面６から雌ねじ部７が機械切削加工により形成され、図３（ｂ）に示すように、この雌ねじ部７の中心線７ａを中心とする周方向Ｘで非円形状をなす外周部８が形成されている。この外周部８は、この雌ねじ部７の中心線７ａからの半径が互いに異なる上下両規制面８ａと左右両規制面８ｂとを有している。
【００４５】
前記中子軸２は、金属や合成樹脂などからなり、機械切削加工や型成形により形成される。この中子軸２の頭部９においては、大径の円環状膨出部１０の端面１０ａから雄ねじ部１１が一体に形成されている。この中子軸２は頭部９から尻部１２にわたり中心線２ａを中心とする断面円形状をなすが、図４（ｂ）に示すように、この尻部１２の外周部１３においては左右両側で規制面１４が平面状に切り欠いて形成されている。この左右両規制面１４間の端面１５から雌ねじ部１６が形成されている。図２に示すように、この中子軸２の頭部９の雄ねじ部１１を前記刀身１の基端口部５の雌ねじ部７に対し着脱可能に螺合すると、図３（ａ）に示すようにこの頭部９の端面１０ａがこの基端口部５の端面６に当接した状態で、この中子軸２がこの基端口部５から延設される。
【００４６】
前記把持部３は合成樹脂により型成形される。この合成樹脂として透明または半透明のアクリル樹脂やＡＢＳ樹脂などを採用した場合には、内側の中子軸２等が外側から見えるため、外観上印象的な見映えをかもしだすことができる。この把持部３内には頭部１７から尻部１８にわたり断面円形状の挿嵌孔１９が貫設されているが、図４（ｂ）に示すように、この尻部１８の内周部２１においては左右両側で規制面２２が平面状に切り欠いて形成されている。この頭部１７の内周部２０の内径はこの尻部１８の内周部２１の内径よりも大きくなっている。この頭部１７の端面２３側には頭側着座凹部２４が形成されている。この尻部１８の端面２５側には尻側着座凹部２６が前記左右両規制面２２に隣接して形成されている。
【００４７】
前記頭側着座凹部２４は、図３（ａ）に示すように、前記挿嵌孔１９の内周部２０の端縁部から環状に広がる嵌合底壁部２７と、この環状嵌合底壁部２７の外周端縁部に連続する環状の嵌合側壁部２８と、この環状嵌合底壁部２７に面して環状嵌合側壁部２８の外側へ開放された開口部２９とを有している。この環状嵌合側壁部２８の内周部３０は、挿嵌孔１９の中心線１９ａを中心とする周方向Ｘで非円形状をなし、図３（ｂ）に示すように、この挿嵌孔１９の中心線１９ａからの半径が互いに異なる上下両規制面３０ａと左右両規制面３０ｂとを有している。
【００４８】
前記尻側着座凹部２６は、図４（ａ）に示すように、前記挿嵌孔１９の内周部２１の端縁部から円環状に広がる嵌合底壁部３１と、この円環状嵌合底壁部３１の外周端縁部に連続する円環状嵌合側壁部３２と、この円環状嵌合底壁部３１に面して円環状嵌合側壁部３２の外側へ開放された開口部３３とを有している。さらに、この尻側着座凹部２６において開口部３３の外周部は、円環状嵌合側壁部３２から外側へ広がり、この円環状嵌合側壁部３２から連続する円環状外側底壁部３４と、この円環状外側底壁部３４の外周端縁部に連続する円環状の外側側壁部３５とを有している。
【００４９】
前記中子軸２を前記把持部３内の挿嵌孔１９に対しその頭部１７側から挿入してこの中子軸２の外周に把持部３を着脱可能に挿嵌すると、図２，３に示すように、前記刀身１の基端口部５は、前記頭側着座凹部２４に対しその開口部２９から嵌合されて、この頭側着座凹部２４の外側へその開口部２９から突出する。この嵌合状態では、刀身１の基端口部５の外周部８が頭側着座凹部２４の環状嵌合側壁部２８の内周部３０に支持されるとともに、刀身１の基端口部５の端面６が頭側着座凹部２４の環状嵌合底壁部２７に支持され、中子軸２の円環状膨出部１０の外周部１０ｂが挿嵌孔１９の内周部２０に支持される。そのため、これらの支持部分（８，３０，６，２７，１０ｂ，２０）が移動規制部として機能する。前記把持部３の頭部１７の端面２３側には頭側着座凹部２４の環状嵌合側壁部２８から広がる環状の外周隅部３６が形成される。この環状外周隅部３６は前記刀身１の基端口部５の外周部８から外側に広がる段差状をなしている。また、前記中子軸２の尻部１２で外周部１３の左右両規制面１４は挿嵌孔１９の内周部２１の左右両規制面２２に支持され、それらの支持部分（１３，１４，２１，２２）が移動規制部として機能する。この尻部１２の端面１５は前記尻側着座凹部２６の円環状嵌合底壁部３１とほぼ面一になる。
【００５０】
前記尻蓋４は、金属や合成樹脂などからなり、機械切削加工や型成形により形成される。この尻蓋４においては、操作頭部３７の内側外周隅部３７ａから連続する嵌合部３８が突設され、この嵌合部３８の端面３９から雄ねじ部４０が形成されているとともに、この嵌合部３８の円環状外周部４１に対し段差状をなす操作頭部３７の端面４２が外側へ広がっている。この操作頭部３７の外側端面には図５にも示す操作溝４３が形成されている。
【００５１】
前記尻蓋４の雄ねじ部４０を前記中子軸２の尻部１２の雌ねじ部１６に対し着脱可能に螺合すると、図２，４に示すように、この尻蓋４は、前記尻側着座凹部２６に対しその開口部３３から嵌合されて、この尻側着座凹部２６の外側へその開口部３３から突出する。この嵌合状態では、尻蓋４の嵌合部３８の外周部４１が尻側着座凹部２６の円環状嵌合側壁部３２の内周部４４に支持されるとともに、尻蓋４の嵌合部３８の端面３９が尻側着座凹部２６の円環状嵌合底壁部３１に支持される。さらに、尻蓋４の操作頭部３７の端面４２が尻側着座凹部２６の開口部３３において円環状外側側壁部３５の内側で円環状外側底壁部３４に支持される。そのため、これらの支持部分（４１，４４，３９，３１，４２，３４）が移動規制部として機能する。尻蓋４の操作頭部３７は把持部３の尻部１８の外側でこの尻部１８の端面２５側に隣接するように並べられて露出する。この把持部３の尻部１８の端面２５側には尻側着座凹部２６の円環状外側側壁部３５から広がる円環状の外周隅部４５が形成される。この円環状外周隅部４５は尻蓋４の操作頭部３７の外周部４６から外側に広がる段差状をなしている。この尻蓋４を回動させて締め付けると、尻蓋４と前記刀身１の基端口部５との間で把持部３が挟持される。
【００５２】
〔第二実施形態及びその別例１，２〕
次に、本発明の第二実施形態及びその別例１，２にかかる刃物の柄について第一実施形態との相違点を中心に図６〜８を参照して説明する。
【００５３】
図６（ｂ）に示す第二実施形態においては、前記把持部３の頭部１７側で頭側着座凹部２４に薄板状のパッキン４７が嵌め込まれて環状嵌合底壁部２７に当てがわれている。このパッキン４７は環状嵌合底壁部２７と刀身１の基端口部５の端面６との間で挟持されている。また、図６（ａ）に示す第二実施形態においては、前記把持部３の尻部１８側で尻側着座凹部２６に薄板状のパッキン４８が嵌め込まれて円環状外側底壁部３４に当てがわれている。このパッキン４８は円環状外側底壁部３４と尻蓋４の端面４２との間で挟持されている。
【００５４】
図７に示す第二実施形態の別例１において、把持部３の尻部１８の尻側着座凹部２６で円環状外側底壁部３４は、円環状嵌合側壁部３２から外側へ円環状に広がる外側底壁部３４ａと、この円環状外側底壁部３４ａに対し段差状をなして円環状外側側壁部３５へ連続する円環状外側底壁部３４ｂとからなる。この尻側着座凹部２６に薄板状のパッキン４８が嵌め込まれて内段の円環状外側底壁部３４ａに当てがわれている。このパッキン４８は、外段の円環状外側底壁部３４ｂに支持された尻蓋４の端面４２と、内段の円環状外側底壁部３４ａとの間で挟持されている。
【００５５】
図８に示す第二実施形態の別例２においては、前記把持部３の尻部１８側で尻側着座凹部２６に薄板状のパッキン４８が嵌め込まれて環状嵌合底壁部３１に当てがわれている。このパッキン４８は環状嵌合底壁部３１と尻蓋４の嵌合部３８の端面３９との間で挟持されている。
【００５６】
なお、図示しないが、前記パッキンの種類としては、Ｏリング等を採用してもよい。
〔第三実施形態〕
次に、本発明の第三実施形態にかかる刃物の柄について第一実施形態との相違点を中心に図９を参照して説明する。
【００５７】
図９（ａ）に示すように、前記尻側着座凹部２６は、前記中子軸２が貫通する挿嵌孔１９の内周部２１の端縁部から斜状に広がる円環状の嵌合側壁部３２と、この嵌合側壁部３２に面して円環状嵌合側壁部３２の外側へ開放された開口部３３とを有している。この尻側着座凹部２６の円環状嵌合側壁部３２の内側で支持される尻蓋４の嵌合部３８の外周部４１と、この円環状嵌合側壁部３２との間でＯリング４９（シール部材）が挟持されている。
【００５８】
また、図９（ｂ）に示すように、前記頭側着座凹部２４に隣接して、前記中子軸２の外周部全体で周方向に延設された溝部５０と、この中子軸２が貫通する挿嵌孔１９の内周部２０の端縁部との間でＯリング５１（シール部材）が挟持されている。
【００５９】
なお、図示しないが、前記尻側着座凹部２６に隣接して、前記中子軸２の外周部全体で周方向に延設された溝部と、この中子軸２が貫通する挿嵌孔１９の内周部２１の端縁部との間でＯリング４９（シール部材）を挟持するようにしてもよい。
【００６０】
〔他の別例〕
そのほか、図示しないが、前述した第一実施形態並びに第二実施形態及び第二実施形態の別例１，２並びに第三実施形態における柄Ｈに磁性を持たせてもよい。例えば、把持部３に磁気性材を混入したり、把持部３内に磁気性部材を嵌め込む。
【００６１】
また、図示しないが、前述した第一実施形態並びに第二実施形態及び第二実施形態の別例１，２並びに第三実施形態にかかる柄Ｈにおいて、光触媒機能により抗菌や防汚や脱臭などの効果を発揮する酸化チタンを把持部３に混入したりコーティングしたりしてもよい。
【図面の簡単な説明】
【図１】第一実施形態に係る刃物を分解して示す一部破断正面図である。
【図２】（ａ）は第一実施形態に係る刃物を組み付けて示す一部破断正面図であり、（ｂ）は同じく一部破断平面図である。
【図３】（ａ）は図２（ａ）の部分拡大断面図であり、（ｂ）は図２（ａ）のＡ−Ａ線断面図である。
【図４】（ａ）は図２（ａ）の部分拡大断面図であり、（ｂ）は図２（ａ）のＢ−Ｂ線断面図である。
【図５】図２（ａ）のＣ−Ｃ線矢視図である。
【図６】（ａ）は第二実施形態に係る刃物において尻部側を示す部分拡大断面図であり、（ｂ）は同じく頭部側を示す部分拡大断面図である。
【図７】第二実施形態の別例１に係る刃物において尻部側を示す部分拡大断面図である。
【図８】第二実施形態の別例２に係る刃物において尻部側を示す部分拡大断面図である。
【図９】（ａ）は第三実施形態に係る刃物において尻部側を示す部分拡大断面図であり、（ｂ）は同じく頭部側を示す部分拡大断面図である。
【符号の説明】
Ｈ…柄、１…刀身、２…中子軸、３…把持部、４…尻蓋、５…刀身の基端口部、６…刀身基端口部の端面（移動規制部）、７…刀身基端口部の雌ねじ部、８…刀身基端口部の外周部（移動規制部）、９…中子軸の頭部、１０ｂ…中子軸の頭部外周部（移動規制部）、１１…中子軸の雄ねじ部、１２…中子軸の尻部、１３…中子軸の尻部外周部（移動規制部）、１４…中子軸の尻部規制面（移動規制部）、１６…中子軸の雌ねじ部、１７…把持部の頭部、１８…把持部の尻部、１９…把持部の挿嵌孔、２０…把持部の頭部内周部（移動規制部）、２１…把持部の尻部内周部（移動規制部）、２２…把持部の尻部規制面（移動規制部）、２３…把持部の頭部端面、２４…把持部の頭側着座凹部、２５…把持部の尻部端面、２６…把持部の尻側着座凹部、２７…嵌合底壁部（移動規制部）、２８…嵌合側壁部、２９…開口部、３０…嵌合側壁部の内周部（移動規制部）、３１…嵌合底壁部（移動規制部）、３２…嵌合側壁部、３３…開口部、３４…外側底壁部（移動規制部）、３５…外側側壁部、３６…把持部の頭部外周隅部、３７ａ…尻蓋の外周隅部、３８…尻蓋の嵌合部、３９…尻蓋の嵌合部端面（移動規制部）、４０…尻蓋の雄ねじ部、４１…尻蓋の嵌合部外周部（移動規制部）、４２…尻蓋の端面（移動規制部）、４４…嵌合側壁部の内周部（移動規制部）、４５…把持部の尻部外周隅部、４６…尻蓋の外周部、４７，４８…パッキン（シール部材）、４９，５１…Ｏリング（シール部材）、５０…中子軸の溝部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a handle of a cutter in which a gripping part is inserted into an outer periphery of a core shaft extending from a proximal end portion of a blade and a bottom lid is connected to a bottom portion of the core shaft.
[0002]
[Prior art and problems to be solved by the invention]
Conventionally, the knife shown in Japanese Utility Model Publication No. 1-2698 is inferior in terms of the following * as shown in the drawing of the publication.
[0003]
* The nut 13 and the handle bottom 14 are separately provided separately, the nut 13 is embedded in the recess e, and the recess e is closed by the handle bottom 14. Therefore, even if the handle bottom 14 is removed from the handle 12, the nut 13 in the recess e is difficult to touch from the outside of the handle 12, and the nut 13 and the handle 12 are difficult to attach and detach.
[0004]
* A screw b (male screw portion) is provided on the core shaft 3 side, and the nut 13 is screwed into the screw b. Therefore, when this screw b is too long, it may protrude from the nut 13. For example, when the nut 13 is exposed from the handle 12, the screw b can be seen from the outside of the handle 12 unless the cap b is used and the screw b is hidden. If it is adopted, the tightening amount may be insufficient unless the female screw hole of the cap nut is deepened sufficiently. Therefore, it is necessary to embed the nut 13 in the recess e.
[0005]
The first aspect of the present invention is to make it easy to touch the bottom cover (corresponding to the nut 13) from the outside of the bottom of the gripping part (corresponding to the handle 12) and to easily perform the detachment operation of the bottom cover and the gripping part. The purpose is. Further, according to the present invention, even when the bottom lid (corresponding to the nut 13) is exposed from the gripping part (corresponding to the handle 12), the male screw part (corresponding to the screw b) is made difficult to be seen from the outside of the gripping part. The second purpose is to improve the appearance.
[0006]
[Means for Solving the Problems and Effects of the Invention]
Drawing of postscript embodiment (1st embodiment shown in FIGS. 1-5, 2nd embodiment shown in FIG. 6, Example 1 of 2nd embodiment shown in FIG. 7, Example of 2nd embodiment shown in FIG. 8 2, the present invention corresponding to only the third embodiment will be described with reference to the reference numeral of the third embodiment shown in FIG.
[0007]
The handle (H) of the cutter according to the invention of claim 1 corresponds to only the third embodiment and is configured as follows.
[0008]
A gripping part (3) is detachably fitted on the outer periphery of a core shaft (2) extending from the base end part (5) of the blade (1). A bottom cover (4) is detachably connected to the bottom (12) of the core shaft (2). The bottom lid (4) is exposed side by side so as to be adjacent to the end surface (25) side of the bottom (18) of the gripping part (3) outside the bottom part (18) of the gripping part (3). . A gripping portion (3) is provided between the bottom lid (4) and the base end opening (5) of the blade (1). A buttocks seating recess (26) is provided on the end face (25) side of the buttocks (18) of the grip portion (3). The butt-side seating recess (26) has an annular fitting extending obliquely from the inner peripheral edge (end of the inner peripheral part 21) of the insertion hole (19) through which the core shaft (2) passes. It has a joint side wall part (32) and an opening part (33) that faces the fitting side wall part (32) and opens to the outside of the annular fitting side wall part (32). The bottom lid (4) is fitted into the bottom-side seating recess (26) from the opening (33) in a state where the bottom lid (4) is screwed and connected to the bottom (12) of the core shaft (2). The fitting protrudes from the opening (33) to the outside of the buttocks seating recess (26) and is supported on the inside of the annular fitting side wall (32) of the buttocks seating recess (26). Part (38).
[0009]
In the invention of claim 1 , the handle (H) can be disassembled and assembled by attaching and detaching the grip portion (3) and the bottom lid (4) to the core shaft (2). Therefore, depending on the change of the shape of the gripping part (3) and the bottom cover (4), the change of the shape of the blade (1) and the core shaft (2), the change of the center of gravity position of the handle (H), and the material Sorting and disposal can be done easily. Moreover, since the bottom cover (4) is exposed side by side so as to be adjacent to the end surface (25) side of the bottom section (18) of the gripping section (3), the bottom cover (4) is compared with the above-described conventional technique. ) Can be easily touched from the outside of the buttocks (18) of the gripping part (3), and the detachment operation of the bottom cover (4) and the gripping part (3) can be easily performed. In addition, a gap is less likely to be formed at the boundary between the bottom (18) and the bottom lid (4) of the gripping part (3), and dust and moisture are less likely to enter the handle (H).
[0013]
The handle (H) of the cutter according to the invention of claim 2 corresponds only to the third embodiment , and is configured as follows.
[0014]
A gripping part (3) is detachably fitted on the outer periphery of a core shaft (2) extending from the base end part (5) of the blade (1). A male screw portion (40) provided on the bottom lid (4) is detachably screwed with a female screw portion (16) provided on the bottom portion (12) of the core shaft (2). The bottom lid (4) is exposed side by side so as to be adjacent to the end surface (25) side of the bottom (18) of the gripping part (3) outside the bottom part (18) of the gripping part (3). . A gripping portion (3) is provided between the bottom lid (4) and the base end opening (5) of the blade (1). A buttocks seating recess (26) is provided on the end face (25) side of the buttocks (18) of the grip portion (3). The butt-side seating recess (26) has an annular fitting extending obliquely from the inner peripheral edge (end of the inner peripheral part 21) of the insertion hole (19) through which the core shaft (2) passes. It has a joint side wall part (32) and an opening part (33) that faces the fitting side wall part (32) and opens to the outside of the annular fitting side wall part (32). The bottom lid (4) is fitted into the bottom-side seating recess (26) from the opening (33) in a state where the bottom lid (4) is screwed and connected to the bottom (12) of the core shaft (2). The fitting protrudes from the opening (33) to the outside of the buttocks seating recess (26) and is supported on the inside of the annular fitting side wall (32) of the buttocks seating recess (26). Part (38).
In the invention of claim 2 , in addition to the effect of the invention of claim 1, the handle (H) is disassembled and assembled by attaching and detaching the grip portion (3) and the bottom cover (4) to the core shaft (2). It can be carried out. Therefore, depending on the change of the shape of the gripping part (3) and the bottom cover (4), the change of the shape of the blade (1) and the core shaft (2), the change of the center of gravity position of the handle (H), and the material Sorting and disposal can be done easily. Moreover, since the female screw part (16) is provided on the core shaft (2) side and the male screw part (40) is provided on the tail lid (4) side, the tail lid (4) is compared with the above-described conventional technique. Even if it is exposed from the gripping part (3), the external thread part (40) becomes difficult to be seen from the outside of the gripping part (3), and the appearance can be improved.
[0042]
DETAILED DESCRIPTION OF THE INVENTION
[First embodiment]
First, the handle of the cutter according to the first embodiment of the present invention will be described with reference to FIGS.
[0043]
As shown in FIG. 1, the blade includes a blade 1, a core shaft 2, a grip 3, and a bottom lid 4 that are provided separately from each other. As shown in FIG. 2, the handle H of the blade is configured by assembling the core shaft 2, the grip portion 3, and the bottom lid 4 to the proximal end mouth portion 5 of the blade 1.
[0044]
The blade 1 is made of metal and is formed by forging. In the base end mouth portion 5 of the blade 1, a female screw portion 7 is formed from the end surface 6 by machining, and as shown in FIG. 3B, a circumferential direction X centering on a center line 7 a of the female screw portion 7. A non-circular outer peripheral portion 8 is formed. The outer peripheral portion 8 has upper and lower restricting surfaces 8a and left and right restricting surfaces 8b having different radii from the center line 7a of the female screw portion 7.
[0045]
The core shaft 2 is made of metal, synthetic resin, or the like, and is formed by machining or molding. In the head portion 9 of the core shaft 2, a male screw portion 11 is integrally formed from the end surface 10 a of the large-diameter annular bulge portion 10. The core shaft 2 has a circular cross section centered on the center line 2a from the head 9 to the buttocks 12. As shown in FIG. 4 (b), the outer periphery 13 of the buttocks 12 has both left and right sides. Thus, the regulation surface 14 is formed by cutting out into a flat shape. A female thread portion 16 is formed from an end surface 15 between the left and right restricting surfaces 14. As shown in FIG. 2, when the male screw portion 11 of the head portion 9 of the core shaft 2 is detachably screwed into the female screw portion 7 of the base end opening portion 5 of the blade 1, as shown in FIG. In addition, the core shaft 2 extends from the base end port 5 in a state where the end surface 10 a of the head 9 is in contact with the end surface 6 of the base end port 5.
[0046]
The grip portion 3 is molded with a synthetic resin. When a transparent or translucent acrylic resin or ABS resin is used as the synthetic resin, the inner core shaft 2 and the like can be seen from the outside, so that an impressive appearance can be produced. An insertion hole 19 having a circular cross section extends through the grip portion 3 from the head portion 17 to the buttocks portion 18. As shown in FIG. 4B, the inner peripheral portion 21 of the buttocks portion 18. In FIG. 3, the regulation surface 22 is formed by cutting out in a planar shape on both the left and right sides. The inner diameter of the inner peripheral portion 20 of the head 17 is larger than the inner diameter of the inner peripheral portion 21 of the buttocks 18. A head-side seating recess 24 is formed on the end surface 23 side of the head 17. A butt-side seating recess 26 is formed adjacent to the left and right restricting surfaces 22 on the end surface 25 side of the butt portion 18.
[0047]
As shown in FIG. 3A, the head-side seating recess 24 includes a fitting bottom wall portion 27 that extends in an annular shape from an end edge portion of the inner peripheral portion 20 of the insertion hole 19, and the annular fitting bottom wall. An annular fitting side wall 28 that is continuous with the outer peripheral edge of the portion 27, and an opening 29 that faces the annular fitting bottom wall 27 and is open to the outside of the annular fitting side wall 28. ing. The inner peripheral portion 30 of the annular fitting side wall portion 28 has a noncircular shape in the circumferential direction X around the center line 19a of the insertion hole 19, and as shown in FIG. 19 has both upper and lower restricting surfaces 30a and left and right restricting surfaces 30b having different radii from the center line 19a.
[0048]
As shown in FIG. 4 (a), the bottom side seating recess 26 includes a fitting bottom wall portion 31 that extends in an annular shape from the edge of the inner peripheral portion 21 of the insertion hole 19, and this annular fitting. An annular fitting side wall portion 32 continuous with the outer peripheral edge of the bottom wall portion 31, and an opening 33 facing the annular fitting bottom wall portion 31 and opened to the outside of the annular fitting side wall portion 32. And have. Further, the outer peripheral portion of the opening 33 in the butt-side seating recess 26 extends outward from the annular fitting side wall 32, and an annular outer bottom wall 34 continuous from the annular fitting side wall 32, It has an annular outer side wall 35 that is continuous with the outer peripheral edge of the annular outer bottom wall 34.
[0049]
When the core shaft 2 is inserted into the insertion hole 19 in the grip portion 3 from the head 17 side and the grip portion 3 is detachably fitted to the outer periphery of the core shaft 2, FIGS. As shown in FIG. 4, the base end 5 of the blade 1 is fitted into the head-side seating recess 24 from its opening 29 and protrudes from the opening 29 to the outside of the head-side seating recess 24. In this fitted state, the outer peripheral portion 8 of the base end mouth portion 5 of the blade 1 is supported by the inner peripheral portion 30 of the annular fitting side wall portion 28 of the head-side seating recessed portion 24 and the end face of the base end mouth portion 5 of the blade 1. 6 is supported by the annular fitting bottom wall portion 27 of the head-side seating recess 24, and the outer peripheral portion 10 b of the annular bulging portion 10 of the core shaft 2 is supported by the inner peripheral portion 20 of the insertion hole 19. Therefore, these support portions (8, 30, 6, 27, 10b, 20) function as a movement restricting portion. An annular outer peripheral corner 36 that extends from the annular fitting side wall 28 of the head-side seating recess 24 is formed on the end surface 23 side of the head 17 of the grip portion 3. The annular outer peripheral corner portion 36 has a stepped shape that spreads outward from the outer peripheral portion 8 of the base end port portion 5 of the blade 1. Further, the left and right restricting surfaces 14 of the outer peripheral portion 13 are supported by the left and right restricting surfaces 22 of the inner peripheral portion 21 of the insertion hole 19 at the bottom portion 12 of the core shaft 2, and the supporting portions (13, 14, 21 and 22) function as a movement restricting portion. The end surface 15 of the buttocks 12 is substantially flush with the annular fitting bottom wall 31 of the buttocks seating recess 26.
[0050]
The bottom lid 4 is made of metal, synthetic resin, or the like, and is formed by machining or molding. In the bottom cover 4, a fitting portion 38 that continues from the inner outer peripheral corner portion 37 a of the operation head 37 is projected, and a male screw portion 40 is formed from an end surface 39 of the fitting portion 38. An end face 42 of the operation head 37 that forms a step with respect to the annular outer peripheral portion 41 of the joint portion 38 extends outward. An operation groove 43 also shown in FIG. 5 is formed on the outer end surface of the operation head 37.
[0051]
When the male screw portion 40 of the bottom lid 4 is detachably screwed to the female screw portion 16 of the bottom portion 12 of the core shaft 2, the bottom lid 4 is attached to the bottom side seating as shown in FIGS. It fits into the recess 26 from the opening 33 and protrudes from the opening 33 to the outside of the bottom seating recess 26. In this fitted state, the outer peripheral portion 41 of the fitting portion 38 of the bottom lid 4 is supported by the inner peripheral portion 44 of the annular fitting side wall portion 32 of the bottom side seating concave portion 26 and the fitting portion of the bottom lid 4 The end face 39 of 38 is supported by the annular fitting bottom wall part 31 of the bottom side seating recessed part 26. Further, the end face 42 of the operation head 37 of the bottom lid 4 is supported by the annular outer bottom wall 34 inside the annular outer side wall 35 in the opening 33 of the bottom side seating recess 26. Therefore, these support portions (41, 44, 39, 31, 42, 34) function as a movement restricting portion. The operation head 37 of the bottom cover 4 is arranged and exposed so as to be adjacent to the end face 25 side of the bottom 18 on the outside of the bottom 18 of the grip 3. An annular outer peripheral corner 45 extending from the annular outer side wall 35 of the buttocks seating recess 26 is formed on the end face 25 side of the buttocks 18 of the grip portion 3. The annular outer peripheral corner 45 has a stepped shape extending outward from the outer peripheral portion 46 of the operation head 37 of the bottom lid 4. When the bottom lid 4 is rotated and tightened, the grip portion 3 is sandwiched between the bottom lid 4 and the base end opening 5 of the blade 1.
[0052]
[Second Embodiment and Other Examples 1 and 2]
Next, the handle of the cutting tool according to the second embodiment of the present invention and the modified examples 1 and 2 will be described with reference to FIGS.
[0053]
In the second embodiment shown in FIG. 6 (b), a thin plate-like packing 47 is fitted into the head-side seating recess 24 on the head 17 side of the grip portion 3 and applied to the annular fitting bottom wall portion 27. ing. The packing 47 is sandwiched between the annular fitting bottom wall portion 27 and the end surface 6 of the base end portion 5 of the blade 1. In addition, in the second embodiment shown in FIG. 6A, a thin plate-like packing 48 is fitted into the buttocks seating recess 26 on the buttocks 18 side of the gripping portion 3 so as to contact the annular outer bottom wall 34. It has been broken. The packing 48 is sandwiched between the annular outer bottom wall 34 and the end face 42 of the bottom lid 4.
[0054]
In another example 1 of the second embodiment shown in FIG. 7, the annular outer bottom wall portion 34 is annularly formed outward from the annular fitting side wall portion 32 in the bottom side seating recess portion 26 of the bottom portion 18 of the grip portion 3. The outer bottom wall portion 34a spreads out, and the annular outer bottom wall portion 34b continues to the annular outer side wall portion 35 in a step shape with respect to the annular outer bottom wall portion 34a. A thin plate-like packing 48 is fitted into the bottom-side seating recess 26 and applied to the inner annular outer bottom wall 34a. The packing 48 is sandwiched between the end face 42 of the bottom lid 4 supported by the outer annular outer bottom wall portion 34b and the inner annular outer bottom wall portion 34a.
[0055]
In another example 2 of the second embodiment shown in FIG. 8, a thin plate-like packing 48 is fitted into the buttocks seating recess 26 on the buttocks 18 side of the gripping portion 3 and applied to the annular fitting bottom wall 31. It has been broken. The packing 48 is sandwiched between the annular fitting bottom wall portion 31 and the end surface 39 of the fitting portion 38 of the bottom lid 4.
[0056]
Although not shown, an O-ring or the like may be adopted as the type of packing.
[Third embodiment]
Next, the handle of the cutter according to the third embodiment of the present invention will be described with reference to FIG. 9 focusing on the differences from the first embodiment.
[0057]
As shown in FIG. 9 (a), the butt-side seating recess 26 has an annular fitting side wall extending obliquely from the edge of the inner peripheral portion 21 of the insertion hole 19 through which the core shaft 2 passes. A portion 32 and an opening 33 facing the fitting side wall portion 32 and opened to the outside of the annular fitting side wall portion 32 are provided. An O-ring 49 (between the outer peripheral portion 41 of the fitting portion 38 of the bottom lid 4 supported on the inside of the annular fitting side wall portion 32 of the buttocks seating concave portion 26 and the annular fitting side wall portion 32. A sealing member) is sandwiched.
[0058]
Further, as shown in FIG. 9B, adjacent to the head-side seating recess 24, a groove portion 50 extending in the circumferential direction on the entire outer peripheral portion of the core shaft 2 and the core shaft 2 are An O-ring 51 (seal member) is sandwiched between the end edge portion of the inner peripheral portion 20 of the insertion hole 19 that penetrates.
[0059]
Although not shown, adjacent to the butt-side seating concave portion 26, a groove portion extending in the circumferential direction on the entire outer peripheral portion of the core shaft 2 and an insertion hole 19 through which the core shaft 2 penetrates. An O-ring 49 (seal member) may be sandwiched between the end edge portion of the inner peripheral portion 21.
[0060]
[Other examples]
In addition, although not shown, magnetism may be imparted to the handle H in the first embodiment, the second embodiment and the other examples 1 and 2 of the second embodiment, and the third embodiment. For example, a magnetic material is mixed into the grip portion 3 or a magnetic member is fitted into the grip portion 3.
[0061]
In addition, although not shown, in the pattern H according to the first embodiment, the second embodiment and the other examples 1 and 2 of the second embodiment, and the third embodiment described above, antibacterial, antifouling, deodorizing and the like by the photocatalytic function Titanium oxide that exhibits an effect may be mixed into the grip portion 3 or coated.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view showing an exploded blade according to a first embodiment.
FIG. 2 (a) is a partially broken front view showing the blade according to the first embodiment assembled, and FIG. 2 (b) is a partially broken plan view.
3A is a partially enlarged cross-sectional view of FIG. 2A, and FIG. 3B is a cross-sectional view taken along line AA of FIG. 2A.
4A is a partially enlarged cross-sectional view of FIG. 2A, and FIG. 4B is a cross-sectional view taken along line BB of FIG. 2A.
FIG. 5 is a view taken along the line CC of FIG. 2 (a).
6A is a partially enlarged cross-sectional view showing a butt portion side in the cutter according to the second embodiment, and FIG. 6B is a partially enlarged cross-sectional view showing the head side in the same manner.
FIG. 7 is a partial enlarged cross-sectional view showing a butt portion side in a cutter according to another example 1 of the second embodiment.
FIG. 8 is a partial enlarged cross-sectional view showing a butt portion side in a cutter according to another example 2 of the second embodiment.
FIG. 9A is a partial enlarged cross-sectional view showing a butt portion side in the cutter according to the third embodiment, and FIG. 9B is a partial enlarged cross-sectional view showing the head side in the same manner.
[Explanation of symbols]
H ... handle, 1 ... blade, 2 ... core shaft, 3 ... gripping part, 4 ... bottom lid, 5 ... base end of the blade, 6 ... end face of the blade base end (movement restricting part), 7 ... blade base Internal threaded portion of the end opening portion, 8 ... outer peripheral portion of the blade base end opening portion (movement restricting portion), 9 ... head portion of the core shaft, 10b ... outer peripheral portion of head portion of the core shaft (movement restricting portion), 11 ... core Male screw part of shaft, 12 ... bottom part of core shaft, 13 ... outer periphery part of bottom part of core shaft (movement restricting part), 14 ... bottom part regulating surface (movement restricting part) of core shaft, 16 ... core Internal threaded portion of shaft, 17... Head portion of gripping portion, 18 .. bottom portion of gripping portion, 19 .. insertion hole of gripping portion, 20... Inner peripheral portion (movement restricting portion) of head portion of gripping portion, 21. Inner periphery (movement restricting part) of the grip part, 22 ... the buttocks restricting surface (movement restricting part) of the gripping part, 23 ... the head end face of the gripping part, 24 ... the head side seating recess of the gripping part, 25 ... of the gripping part Butt end face, 26 ... Seat on the buttocks side of the grip 27, fitting bottom wall portion (movement restricting portion), 28 ... fitting side wall portion, 29 ... opening, 30 ... inner peripheral portion (movement restricting portion) of fitting side wall portion, 31 ... fitting bottom wall portion (Movement restriction part), 32 ... fitting side wall part, 33 ... opening, 34 ... outer bottom wall part (movement restriction part), 35 ... outer side wall part, 36 ... head outer peripheral corner of gripping part, 37a ... buttocks The outer peripheral corner of the lid, 38 ... the fitting part of the bottom lid, 39 ... the end surface of the fitting part of the bottom lid (movement restricting part), 40 ... the male screw part of the bottom lid, 41 ... the outer peripheral part of the fitting part of the bottom lid (movement) (Restriction part), 42 ... end face of the lid (movement restriction part), 44 ... inner peripheral part (movement restriction part) of the fitting side wall part, 45 ... outer periphery corner part of the grip part, 46 ... outer peripheral part of the tail cover , 47, 48 ... packing (seal member), 49, 51 ... O-ring (seal member), 50 ... groove portion of the core shaft.

Claims

A gripping part is detachably fitted to the outer periphery of the core shaft extending from the base end of the blade, and a bottom cover is detachably connected to the bottom part of the core shaft, and the bottom cover is connected to the gripping part. Exposed side by side so as to be adjacent to the end face side of the buttocks of the gripping portion on the outside of the buttocks, providing a gripping portion between the bottom lid and the base end of the blade ,
A bottom-side seating recess is provided on the end surface side of the bottom of the gripping portion, and the bottom-side seating recess is an annular fitting side wall extending obliquely from the inner peripheral edge of the insertion hole through which the core shaft passes. And an opening that faces the fitting side wall and opens to the outside of the annular fitting side wall,
The bottom cover is fitted into the bottom seating recess from the opening in a state where the bottom cover is screwed and connected to the bottom of the core shaft, and from the opening to the outside of the bottom seating recess. A blade handle characterized by having a fitting portion that protrudes and is supported inside the annular fitting side wall portion of the bottom side seating recess .

A gripping part is detachably fitted on the outer periphery of the core shaft extending from the base end of the blade, and a male screw part provided on the bottom lid is attached to and detached from a female screw part provided on the bottom part of the core shaft. The bottom cover is exposed and arranged to be adjacent to the end face side of the bottom part of the grip part on the outside of the bottom part of the grip part, and between the bottom cover and the base end of the blade. To provide a gripping part ,
A bottom-side seating recess is provided on the end surface side of the bottom of the gripping portion, and the bottom-side seating recess is an annular fitting side wall extending obliquely from the inner peripheral edge of the insertion hole through which the core shaft passes. And an opening that faces the fitting side wall and opens to the outside of the annular fitting side wall,
The bottom cover is fitted into the bottom seating recess from the opening in a state where the bottom cover is screwed and connected to the bottom of the core shaft, and from the opening to the outside of the bottom seating recess. A blade handle characterized by having a fitting portion that protrudes and is supported inside the annular fitting side wall portion of the bottom side seating recess .