JP5162176B2 - Nail clippers - Google Patents
Nail clippers Download PDFInfo
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- JP5162176B2 JP5162176B2 JP2007195939A JP2007195939A JP5162176B2 JP 5162176 B2 JP5162176 B2 JP 5162176B2 JP 2007195939 A JP2007195939 A JP 2007195939A JP 2007195939 A JP2007195939 A JP 2007195939A JP 5162176 B2 JP5162176 B2 JP 5162176B2
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- blade plate
- tip
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- 208000019300 CLIPPERS Diseases 0.000 title claims description 14
- 208000021930 chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids Diseases 0.000 title claims description 14
- 238000005498 polishing Methods 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 22
- 239000000126 substance Substances 0.000 claims description 16
- 238000007517 polishing process Methods 0.000 description 15
- 238000005520 cutting process Methods 0.000 description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000003825 pressing Methods 0.000 description 8
- 230000003746 surface roughness Effects 0.000 description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 238000000635 electron micrograph Methods 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000002335 surface treatment layer Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Description
本発明は爪切りにおいてその刃部の改良に関するものである。 The present invention relates to an improvement of the blade portion in nail cutting.
従来、下記特許文献１に記載の爪切りでは、基端部で互いに固着された上刃板及び下刃板の先端部付近に形成された支持孔に支軸が挿入されて上刃板上でその支軸の上端部に対し押圧操作てこがピンにより支持され、この押圧操作てこを上刃板上に倒した不使用状態から、この押圧操作てこを上刃板上から起こした状態で使用する。一般的に、この上刃板の先端部と下刃板の先端部とには研削処理により刃付けされた尖端縁を有する刃部が形成されることが多い。
上記特許文献１では、研削処理により刃部を鋭利化して刃部の切れ味を向上させることができる。しかし、その刃部の切れ味や美観の向上には改善の余地がある。
この発明は爪切りにおいて刃部の切れ味や美観を向上させることを目的としている。
In the said patent document 1, it can sharpen a blade part by a grinding process and can improve the sharpness of a blade part. However, there is room for improvement in improving the sharpness and aesthetics of the blade.
The object of the present invention is to improve the sharpness and aesthetics of the blade part in nail clippers.
後記実施形態の図面（図１〜４）の符号を援用して本発明を説明する。
請求項１の発明にかかる爪切りにおいては、相対向する上下両刃部５，６の噛み合いによりその上下両刃部５，６間の爪を切断することができ、上下両刃板１，２をその基端部１ａ，２ａで互いに固着してその刃板１，２に弾性を持たせ、この上刃板１の先端部１ｂと下刃板２の先端部２ｂとを互いに接触させた状態で、この上刃板１の先端部１ａの外側と下刃板２の先端部２ｂの外側とに研削処理を同時に施して、この上刃板１の先端部１ａと下刃板２の先端部２ｂとに研削面１０で刃付けされた刃部５，６を同時に形成し、その上下両刃部５，６で噛み合い方向Ｚに対し直交する厚さ方向Ｘの両側に設けた刃面７，８間でその厚さ方向Ｘ及び噛み合い方向Ｚに対し直交する幅方向Ｙに沿って延びる尖端縁９を形成し、この研削面１０で生じる研削条痕を尖端縁９の延設方向Ｙに沿わせ、前記研削面１０で刃付けされた上刃板１の刃部５と下刃板２の刃部６とを互いに離して刃部５，６の尖端縁９を露出させた状態で、刃部５，６を含む上下両刃板１，２の全体に電解研磨処理または化学研磨処理を同時に施した。
請求項１の発明は下記の効果を有する。
（イ） 刃部５，６に対する電解研磨処理または化学研磨処理により、さらに刃部５，６を鋭利化したり刃部５，６の表面粗さを小さくしたりして、刃部５，６の切れ味や美観をより一層向上させることができる。
The present invention will be described with reference to the reference numerals of the drawings (FIGS. 1 to 4) of the embodiments described later.
In the claw cutting according to the invention of claim 1, the claw between the upper and lower blade parts 5 and 6 can be cut by the meshing of the opposed upper and lower blade parts 5 and 6, and the upper and lower blade plates 1 and 2 are formed on the basis thereof. In the state where the end portions 1a and 2a are fixed to each other to give elasticity to the blade plates 1 and 2, the tip portion 1b of the upper blade plate 1 and the tip portion 2b of the lower blade plate 2 are in contact with each other. Grinding is performed simultaneously on the outer side of the tip part 1a of the upper blade plate 1 and the outer side of the tip part 2b of the lower blade plate 2, so that the tip part 1a of the upper blade plate 1 and the tip part 2b of the lower blade plate 2 are The blade parts 5 and 6 which are bladed by the grinding surface 10 are formed at the same time, and the upper and lower blade parts 5 and 6 between the blade surfaces 7 and 8 provided on both sides of the thickness direction X orthogonal to the meshing direction Z A pointed edge 9 extending along the width direction Y perpendicular to the thickness direction X and the meshing direction Z is formed, and the ground surface 10 The grinding streak is aligned with the extending direction Y of the tip edge 9, and the blade portion 5 of the upper blade plate 1 and the blade portion 6 of the lower blade plate 2 that are bladed by the grinding surface 10 are separated from each other to form a blade portion. With the sharp edges 9 of 5 and 6 exposed, the entire upper and lower blade plates 1 and 2 including the blade portions 5 and 6 were simultaneously subjected to electrolytic polishing or chemical polishing.
The invention of claim 1 has the following effects.
(A) The blade portions 5 and 6 are further sharpened or the surface roughness of the blade portions 5 and 6 is reduced by electrolytic polishing treatment or chemical polishing treatment on the blade portions 5 and 6. Sharpness and aesthetics can be further improved.
（ロ） 両刃部５，６の両刃面７，８と尖端縁９とに電解研磨処理または化学研磨処理を施す前に行う研削処理により、尖端縁９の形成を容易に行うことができる。 (B) The tip edge 9 can be easily formed by a grinding process performed before the electrolytic polishing process or the chemical polishing process is performed on the both blade surfaces 7 and 8 and the tip edge 9 of the both blade parts 5 and 6.
（ハ） 電解研磨処理または化学研磨処理を両刃部５，６に対し同時に施したので、両刃部５，６に対する電解研磨処理または化学研磨処理を効率的に行うことができる。 (C) Since the electrolytic polishing process or the chemical polishing process is simultaneously performed on the double-edged portions 5 and 6, the electrolytic polishing process or the chemical polishing process on the double-edged portions 5 and 6 can be efficiently performed.
（ニ） 両刃板１，２の刃部５，６を互いに離して刃部５，６の尖端縁９を露出させた状態でその両刃部５，６に電解研磨処理または化学研磨処理を施したので、尖端縁９に対する電解研磨または化学研磨の未処理部分をなくすことができる。 (D) The blades 5 and 6 of the double-edged plates 1 and 2 were separated from each other and the sharp edges 9 of the blades 5 and 6 were exposed, and both the blades 5 and 6 were subjected to electrolytic polishing treatment or chemical polishing treatment. Therefore, the unprocessed part of the electrolytic polishing or chemical polishing with respect to the tip edge 9 can be eliminated.
（ホ） 刃部５，６の研削面１０で生じる研削条痕の方向は尖端縁９の延設方向Ｙに沿うので、研削条痕による凹凸が尖端縁９でその延設方向Ｙへ生じない。 (E) Since the direction of the grinding streak generated on the grinding surface 10 of the blade portions 5 and 6 is along the extending direction Y of the pointed edge 9, unevenness due to the grinding streak does not occur in the extending direction Y at the pointed edge 9. .
（ヘ） 研削処理を両刃部５，６の刃面７に対し同時に施したので、両刃部５，６の刃面７に対する研削処理を効率的に行うことができる。 (F) Since the grinding process is simultaneously performed on the blade surfaces 7 of the double-edged portions 5 and 6, the grinding process on the blade surfaces 7 of the double-edged portions 5 and 6 can be efficiently performed.
（ト） 刃部５，６を含む刃板１，２の全体に電解研磨処理または化学研磨処理を施したので、刃部５，６を含む刃板１，２の全体の美観を向上させることができる。 (G) Since the whole of the blade plates 1 and 2 including the blade portions 5 and 6 is subjected to the electrolytic polishing treatment or the chemical polishing treatment, the overall beauty of the blade plates 1 and 2 including the blade portions 5 and 6 is improved. Can do.
本発明は、爪切りにおいて刃部５，６の切れ味や美観を向上させることができる。 The present invention can improve the sharpness and aesthetics of the blade portions 5 and 6 in nail cutting.
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（ａ）に示す上刃板１と下刃板２とはプレス加工された金属板（例えばステンレス鋼）であって、そのプレス加工により、この上刃板１及び下刃板２の基端部１ａ，２ａに引掛孔３が形成され、この上刃板１及び下刃板２の先端部１ｂ，２ｂが折曲されるとともにそれらの先端部１ｂ，２ｂの付近に支持孔４が形成される。そのプレス加工後に、この引掛孔３よりも先端側でそれらの基端部１ａ，２ａが互いに点溶接されて固着される。
Hereinafter, a nail clipper according to an embodiment of the present invention will be described with reference to the drawings.
The upper blade plate 1 and the lower blade plate 2 shown in FIG. 1 (a) are pressed metal plates (for example, stainless steel), and the base plate of the upper blade plate 1 and the lower blade plate 2 is formed by the press work. A hooking hole 3 is formed in the end portions 1a, 2a, and the tip portions 1b, 2b of the upper blade plate 1 and the lower blade plate 2 are bent and a support hole 4 is formed in the vicinity of the tip portions 1b, 2b. Is done. After the press working, the base end portions 1a and 2a are fixed to each other by spot welding with respect to the front end side of the catching hole 3.
図１（ａ）に示すように前記上刃板１の先端部１ｂと下刃板２の先端部２ｂとを互いに接触させた状態で、それらの先端部１ｂ，２ｂの外側に対し研削ベルト（両送りローラ間に掛け渡したもの）を当てがって研削処理を同時に施すと、図１（ｂ）に示すように、それらの先端部１ｂ，２ｂに刃付けされた刃部５，６が同時に形成される。その研削処理後、図１（ｃ）に示すように上刃板１と下刃板２とを互いに拡げると、それらの刃部５，６が互いに離れる。それらの刃部５，６においては、図１（ｃ）（ｄ）に示すように、上下両刃板１，２の折曲部分から先端側で、噛み合い方向Ｚに対し直交する厚さ方向Ｘの両側に外側の刃面７と内側の刃面８とが設けられるとともに、これらの刃面７，８間でその厚さ方向Ｘ及び噛み合い方向Ｚに対し直交する幅方向Ｙに沿って延びる尖端縁９が形成される。前記研削ベルトの回転方向は尖端縁９の延設方向（幅方向Ｙ）に沿うため、外側の刃面７に形成された研削面１０で生じる研削条痕の方向は尖端縁９の延設方向（幅方向Ｙ）に沿う。 As shown in FIG. 1A, in the state where the tip portion 1b of the upper blade plate 1 and the tip portion 2b of the lower blade plate 2 are in contact with each other, a grinding belt ( When the grinding process is performed at the same time by applying the belt between the two feed rollers, the blade portions 5, 6 attached to the tip portions 1b, 2b are formed as shown in FIG. 1 (b). Formed simultaneously. After the grinding process, when the upper blade plate 1 and the lower blade plate 2 are expanded to each other as shown in FIG. 1C, the blade portions 5 and 6 are separated from each other. In the blade portions 5 and 6, as shown in FIGS. 1C and 1D, the thickness direction X is perpendicular to the meshing direction Z from the bent portion of the upper and lower blade plates 1 and 2 to the tip side. An outer edge surface 7 and an inner edge surface 8 are provided on both sides, and a sharp edge extending along the width direction Y perpendicular to the thickness direction X and the meshing direction Z between the blade surfaces 7 and 8. 9 is formed. Since the rotation direction of the grinding belt is along the extending direction (width direction Y) of the sharp edge 9, the direction of the grinding streak generated on the grinding surface 10 formed on the outer blade surface 7 is the extending direction of the sharp edge 9. Along the (width direction Y).
前記研削処理後、図１（ｃ）に示すように上刃板１の刃部５と下刃板２の刃部６とを互いに離した状態でこれらの刃部５，６を含む上刃板１及び下刃板２の全体に電解研磨処理を同時に施すと、図１（ｅ）（ｆ）に示すように特に外側の刃面７には前記研削面１０に対し電解研磨処理を施した研磨面１１が生じる。例えば、図１（ｃ）に示す状態で複数組の上刃板１及び下刃板２をプラス電極に接続するとともに、電極板をマイナスに接続し、これらの上刃板１及び下刃板２の引掛孔３を引掛けた状態でこれらの上刃板１及び下刃板２の全体を液槽に入れてそれらを同時に一回の電解研磨で処理する。その際、リン酸と硫酸とを主成分とする混合液を利用し、リン酸：硫酸＝９５：５〜５５：４５（体積％）に設定することができ、硫酸の混合割合よりもリン酸の混合割合を大きくすることが好ましい。また、電圧を約２００Ｖ、電流を約１５Ａ、研磨時間を約３分に設定して電解研磨処理を行ったが、電圧を１００〜２００Ｖ、電流を５〜３０Ａ、研磨時間を１５秒〜５分に設定してもよい。この電解研磨処理条件に応じて前記混合液に対し添加剤を加えたり水や他の液体を加えたりしてもよい。この電解研磨処理後に、これらの上刃板１及び下刃板２を洗浄して乾燥する。 After the grinding process, as shown in FIG. 1 (c), the upper blade plate including these blade portions 5 and 6 with the blade portion 5 of the upper blade plate 1 and the blade portion 6 of the lower blade plate 2 separated from each other. 1 and the entire lower blade plate 2 are subjected to electropolishing treatment at the same time, as shown in FIGS. 1 (e) and 1 (f), the outer blade surface 7 is polished by subjecting the ground surface 10 to electropolishing treatment. Surface 11 is produced. For example, in the state shown in FIG. 1C, a plurality of sets of the upper blade plate 1 and the lower blade plate 2 are connected to the plus electrode, and the electrode plate is connected to the minus electrode, and the upper blade plate 1 and the lower blade plate 2 are connected. The upper blade plate 1 and the lower blade plate 2 are put in a liquid tank in a state where the hook holes 3 are hooked, and they are simultaneously processed by one electrolytic polishing. At that time, using a mixed liquid mainly composed of phosphoric acid and sulfuric acid, phosphoric acid: sulfuric acid = 95: 5-55: 45 (volume%) can be set, and phosphoric acid is more than the mixing ratio of sulfuric acid. It is preferable to increase the mixing ratio. The electrolytic polishing process was performed with the voltage set at about 200 V, the current set at about 15 A, and the polishing time set at about 3 minutes. The voltage was set at 100 to 200 V, the current was set at 5 to 30 A, and the polishing time was set at 15 seconds to 5 minutes. May be set. Depending on the electropolishing conditions, an additive may be added to the mixed solution, or water or other liquid may be added. After the electrolytic polishing treatment, the upper blade plate 1 and the lower blade plate 2 are washed and dried.
図４に示す爪切りにおいては、図１（ｅ）に示す上刃板１及び下刃板２の支持孔４に支軸１２が挿入されて上刃板１上でその支軸１２の上端部に対し押圧操作てこ１３がピン１４により支持されている。図４（ａ）（ｂ）に示すようにこの押圧操作てこ１３を上刃板１上に倒した不使用状態から、図４（ｃ）に示すようにこの押圧操作てこ１３を上刃板１上から起こした状態で使用する。 In the nail cutting shown in FIG. 4, the support shaft 12 is inserted into the support holes 4 of the upper blade plate 1 and the lower blade plate 2 shown in FIG. 1 (e), and the upper end portion of the support shaft 12 on the upper blade plate 1. In contrast, a pressing lever 13 is supported by a pin 14. As shown in FIGS. 4 (a) and 4 (b), from a non-use state in which the pressing lever 13 is brought down on the upper blade plate 1, the pressing lever 13 is moved to the upper blade plate 1 as shown in FIG. 4 (c). Use in the state where it was raised from above.
本実施形態は下記の効果を有する。
＊ 図２（ａ）は、図１（ｃ）（ｄ）に示すように研削処理のみにより刃付けされた刃部５，６の尖端縁９を拡大した電子顕微鏡写真である。図２（ｂ）は、図１（ｅ）（ｆ）に示すように研削処理による刃付け後に電解研磨処理を施した刃部５，６の尖端縁９を拡大した電子顕微鏡写真である。これらを単に目視して比較しただけでも、図２（ａ）の尖端縁９よりも図２（ｂ）の尖端縁９が鋭利化されていることが明らかに分かる。
This embodiment has the following effects.
* FIG. 2A is an electron micrograph in which the tip edges 9 of the blade portions 5 and 6 that are bladed only by the grinding process as shown in FIGS. 1C and 1D are enlarged. FIG. 2B is an electron micrograph in which the sharp edges 9 of the blade portions 5 and 6 that have been subjected to electrolytic polishing after the cutting by grinding as shown in FIGS. 1E and 1F are enlarged. It can be clearly seen that the pointed edge 9 in FIG. 2B is sharpened more than the pointed edge 9 in FIG.
＊ この電解研磨処理により、加工時に上刃板１及び下刃板２の全体に生じたバリ、特に尖端縁９のバリを除去することもできる。
＊ 図１（ｃ）（ｄ）に示すように研削処理のみにより刃付けされた刃部５，６の外側刃面７（研削面１０）についての表面粗さと、図１（ｅ）（ｆ）に示すように研削処理による刃付け後に電解研磨処理を施した刃部５，６の外側刃面７（研磨面１１）についての表面粗さとを比較する。それぞれの表面粗さを測定した結果、研削面１０のＲａ（算術平均粗さ）が１．０μｍであることに対し研磨面１１のＲａ（算術平均粗さ）が０．５μｍになり、研削面１０のＲｙ（最大高さ）が２．３μｍであることに対し研磨面１１のＲｙ（最大高さ）が１．２μｍになり、研削面１０のＲｚ（十点平均粗さ）が１．４μｍであることに対し研磨面１１のＲｚ（十点平均粗さ）が０．６μｍになった。従って、いずれの値も半分程度に低下し、研削面１０よりも研磨面１１が滑面になっていることが分かる。また、図１（ｃ）（ｄ）に示すように研削処理のみにより刃付けされた刃部５，６の内側刃面８（研削未処理面）についての表面粗さと、図１（ｅ）（ｆ）に示すように研削処理による刃付け後に電解研磨処理を施した刃部５，６の内側刃面８（研削未処理面に施した研磨面）についての表面粗さとを比較した場合も、内側刃面８（研削未処理面）よりも内側刃面８（研削未処理面に施した研磨面）が滑面になる。
* By this electrolytic polishing treatment, it is also possible to remove burrs generated on the entire upper blade plate 1 and lower blade plate 2 during processing, in particular, burrs on the tip edge 9.
* As shown in FIGS. 1 (c) and 1 (d), the surface roughness of the outer blade surface 7 (grinding surface 10) of the blade portions 5 and 6 that are bladed only by the grinding process, and FIGS. The surface roughness of the outer blade surface 7 (polishing surface 11) of the blade portions 5 and 6 subjected to the electrolytic polishing process after the cutting by the grinding process is compared. As a result of measuring each surface roughness, Ra (arithmetic average roughness) of the grinding surface 10 is 1.0 μm, whereas Ra (arithmetic average roughness) of the polishing surface 11 is 0.5 μm, and the grinding surface Ry (maximum height) of 10 is 2.3 μm, Ry (maximum height) of the polished surface 11 is 1.2 μm, and Rz (ten-point average roughness) of the grinding surface 10 is 1.4 μm. In contrast, the Rz (ten-point average roughness) of the polished surface 11 was 0.6 μm. Therefore, all values are reduced to about half, and it can be seen that the polished surface 11 is smoother than the ground surface 10. Further, as shown in FIGS. 1C and 1D, the surface roughness of the inner blade surfaces 8 (unground surfaces) of the blade portions 5 and 6 which are bladed only by the grinding process, and FIG. When the surface roughness of the inner blade surface 8 (polished surface applied to the unground surface) of the blade portions 5 and 6 subjected to electrolytic polishing treatment after cutting by the grinding treatment as shown in f) is compared, The inner blade surface 8 (polished surface applied to the unground surface) is a smoother surface than the inner blade surface 8 (unground surface).
＊ 図３は、図１（ｃ）（ｄ）に示すように研削処理のみにより刃付けされた刃部５，６の切れ味と、図１（ｅ）（ｆ）に示すように研削処理による刃付け後に電解研磨処理を施した刃部５，６の切れ味とを比較したグラフであって、実際に爪を切断する際に刃部５，６に生じる荷重を時間経過とともに測定した。その結果、図１（ｃ）（ｄ）の刃部５，６による切断時の最大荷重が約１．９６ｋｇｆになるとともに、図１（ｅ）（ｆ）の刃部５，６による切断時の最大荷重が約１．６３ｋｇｆになり、その最大荷重については研削処理後に電解研磨処理を施した場合の方が研削処理のみを施した場合よりも約１７％低下していることが分かる。従って、軽い力で爪を切ることができる。 * FIG. 3 shows the sharpness of the blade parts 5 and 6 that are bladed only by the grinding process as shown in FIGS. 1 (c) and 1 (d), and the blade by the grinding process as shown in FIGS. 1 (e) and (f). It is the graph which compared with the sharpness of the blade parts 5 and 6 which performed the electrolytic polishing process after attaching, Comprising: The load which arises in the blade parts 5 and 6 when actually cut | disconnecting a nail | claw was measured with progress of time. As a result, the maximum load at the time of cutting by the blade portions 5 and 6 in FIGS. 1C and 1D is about 1.96 kgf, and at the time of cutting by the blade portions 5 and 6 in FIGS. It can be seen that the maximum load is about 1.63 kgf, and the maximum load is about 17% lower when the electrolytic polishing process is performed after the grinding process than when only the grinding process is performed. Therefore, the nail can be cut with a light force.
前記実施形態以外にも例えば下記のように構成してもよい。 For example, the following embodiment may be configured as follows .
・ 電解研磨処理に代えて、化学研磨処理を行う。また、電解研磨処理や化学研磨処理の前処理または後処理としてショットブラストやバレル研磨やバフ研磨を行ってもよい。
・ ステンレス鋼に対する化学研磨処理では、過塩素酸若しくは縮合リン酸系の研磨液を用いる。その他の金属に対する化学研磨処理では、例えば塩酸や硝酸や硫酸を含んだ液または王水を研磨液として用いてもよい。
・ Instead of electrolytic polishing, chemical polishing is performed. Further, shot blasting, barrel polishing, or buffing may be performed as pre-processing or post-processing for electrolytic polishing or chemical polishing.
・ For chemical polishing of stainless steel, use perchloric acid or condensed phosphoric acid type polishing liquid. In the chemical polishing treatment for other metals, for example, a liquid containing hydrochloric acid, nitric acid or sulfuric acid, or aqua regia may be used as the polishing liquid.
・ 電解研磨処理及び化学研磨処理において液組成や混合比率や濃度や液温や攪拌の有無などの条件を変更することにより、上下両刃板１，２の全体が光を反射する反射面（光沢面）になるようにしたり、上下両刃板１，２の全体が光を反射しない非反射面（非光沢面）になるようにしたり、上下両刃板１，２の一部が反射面（光沢面）になるとともに上下両刃板１，２の他部が非反射面（非光沢面）になるようにすることもできる。 -Reflective surface (glossy surface) where the entire upper and lower blades 1 and 2 reflect light by changing the conditions such as liquid composition, mixing ratio, concentration, liquid temperature, and presence / absence of stirring in electrolytic polishing treatment and chemical polishing treatment ), Or the entire upper and lower blade plates 1 and 2 are non-reflective surfaces (non-glossy surfaces) that do not reflect light, or part of the upper and lower blade plates 1 and 2 are reflective surfaces (glossy surfaces). The other parts of the upper and lower blade plates 1 and 2 can be non-reflective surfaces (non-glossy surfaces).
・ 電解研磨処理及び化学研磨処理の際に行うマスキングにより、腐食による文字や記号や模様などを上下両刃板１，２に表示するようにしてもよい。 -You may make it display the character, symbol, pattern, etc. by corrosion on the upper and lower double-edged plates 1 and 2 by masking performed in the electrolytic polishing process and the chemical polishing process .
・ 図１（ｅ）に示す上刃板１において刃部５と基端部１ａとの間の全長は約８５ｍｍであるが、１回の電解研磨処理で取り扱う爪切りの数や電解研磨条件を爪切りのサイズに応じて変更してもよい。 In the upper blade plate 1 shown in FIG. 1 (e), the total length between the blade portion 5 and the base end portion 1a is about 85 mm. However, the number of nail clippers handled in one electrolytic polishing process and the electrolytic polishing conditions are You may change according to the size of a nail clipper.
・ 図示しないが、両刃板をＸ状に交差させた所謂ニッパ式の爪切りにおいて、前述した爪切りと同様に、電解研磨処理または化学研磨処理や研削処理を施してもよい。
・ 図示しないが、刃部５，６と基端部１ａ，２ａとの間の中央部よりも刃部５，６側寄りで上下両刃板１，２を互いに点溶接する。
Although not shown, in a so-called nipper-type nail clipper in which both blade plates intersect in an X shape, an electrolytic polishing process, a chemical polishing process, or a grinding process may be performed in the same manner as the nail clipper described above.
Although not shown in the drawing, the upper and lower blade plates 1 and 2 are spot welded to each other closer to the blade portions 5 and 6 side than the central portion between the blade portions 5 and 6 and the base end portions 1a and 2a.
・ 上刃板１及び下刃板２については、ステンレス鋼以外に、低炭素鋼を用いて浸炭処理したり、チタンを用いたりしてもよい。
・ 電解研磨処理後、上刃板１及び下刃板２にメッキやイオンプレーティングによる表面処理を施すと、それらの表面処理層の密着性を高めることができる。
-About the upper blade board 1 and the lower blade board 2, in addition to stainless steel, you may carburize using low carbon steel, or you may use titanium.
-After the electrolytic polishing treatment, when the upper blade plate 1 and the lower blade plate 2 are subjected to surface treatment by plating or ion plating, the adhesion of the surface treatment layers can be enhanced.
１…上刃板、１ａ…上刃板の基端部、１ｂ…上刃板の先端部、２…下刃板、２ａ…下刃板の基端部、２ｂ…下刃板の先端部、５…上刃板の刃部、６…下刃板の刃部、７…刃部の外側刃面、８…刃部の内側刃面、９…刃部の尖端縁、１０…刃面の研削面、１１…刃面の研磨面、１３…押圧操作てこ、Ｘ…刃部の厚さ方向、Ｙ…刃部の幅方向、Ｚ…刃部の噛み合い方向。 DESCRIPTION OF SYMBOLS 1 ... Upper blade board, 1a ... Base edge part of upper blade board, 1b ... Top edge part of upper blade board, 2 ... Lower blade board, 2a ... Base edge part of lower blade board, 2b ... Front edge part of lower blade board, DESCRIPTION OF SYMBOLS 5 ... Blade part of upper blade board, 6 ... Blade part of lower blade board, 7 ... Outer blade surface of blade part, 8 ... Inner blade surface of blade part, 9 ... Point edge of blade part, 10 ... Grinding of blade surface Surface 11, Polishing surface of blade surface 13, pressing lever, X thickness direction of blade portion, Y width direction of blade portion, Z meshing direction of blade portion.
Claims (1)
上下両刃板をその基端部で互いに固着してその刃板に弾性を持たせ、
この上刃板の先端部と下刃板の先端部とを互いに接触させた状態で、この上刃板の先端部の外側と下刃板の先端部の外側とに研削処理を同時に施して、この上刃板の先端部と下刃板の先端部とに研削面で刃付けされた刃部を同時に形成し、その上下両刃部で噛み合い方向に対し直交する厚さ方向の両側に設けた刃面間でその厚さ方向及び噛み合い方向に対し直交する幅方向に沿って延びる尖端縁を形成し、この研削面で生じる研削条痕を尖端縁の延設方向に沿わせ、
前記研削面で刃付けされた上刃板の刃部と下刃板の刃部とを互いに離して刃部の尖端縁を露出させた状態で、刃部を含む上下両刃板の全体に電解研磨処理または化学研磨処理を同時に施した
ことを特徴とする爪切り。 In the nail clipper that can cut the nail between the upper and lower blade parts by meshing the opposing upper and lower blade parts,
The upper and lower blades are fixed to each other at their base ends to give the blades elasticity,
In a state where the tip portion of the upper blade plate and the tip portion of the lower blade plate are in contact with each other, the outer side of the tip portion of the upper blade plate and the outer side of the tip portion of the lower blade plate are simultaneously subjected to a grinding process, A blade provided with a grinding surface at the tip of the upper blade and the tip of the lower blade at the same time, and blades provided on both sides in the thickness direction perpendicular to the meshing direction at the upper and lower blades A pointed edge extending along the width direction perpendicular to the thickness direction and the meshing direction is formed between the surfaces, and the grinding streak generated on the ground surface is along the extending direction of the pointed edge,
The entire upper and lower blade plates including the blade portion are electropolished in a state where the blade portion of the upper blade plate and the blade portion of the lower blade plate that are bladed by the grinding surface are separated from each other and the sharp edges of the blade portion are exposed. A nail clipper characterized by being subjected to treatment or chemical polishing treatment simultaneously .
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