JPH0268091A - Outer blade for electric shaver - Google Patents
Outer blade for electric shaverInfo
- Publication number
- JPH0268091A JPH0268091A JP22164288A JP22164288A JPH0268091A JP H0268091 A JPH0268091 A JP H0268091A JP 22164288 A JP22164288 A JP 22164288A JP 22164288 A JP22164288 A JP 22164288A JP H0268091 A JPH0268091 A JP H0268091A
- Authority
- JP
- Japan
- Prior art keywords
- outer blade
- thin film
- blade
- transparent thin
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010409 thin film Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 239000010408 film Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 8
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 3
- 239000010935 stainless steel Substances 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 238000005229 chemical vapour deposition Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Landscapes
- Dry Shavers And Clippers (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野〕 本発明は電気かみそりの外刃に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to an outer cutter for an electric shaver.
一般に、電気かみそりの外刃は多数の刃孔が開口してお
り、その刃孔開口縁に刃先エツジが形成され、内刃が前
記刃先エツジに摺接するようになっているため、使用期
間とともに刃先エツジの磨耗や外刃変形等が進行して切
味が劣化していく傾向にある。In general, the outer blade of an electric shaver has a large number of holes, and a cutting edge is formed at the edge of the opening of the cutting hole, and the inner blade comes into sliding contact with the edge of the cutting edge. There is a tendency for edge wear and outer blade deformation to progress and the cutting quality to deteriorate.
ところが、−船便用者にとって、徐々に進行する切味劣
化は判別し難く、また微小な外刃変形も発見し難いため
、知らずに切味の悪い状態で使用を続けていることが多
かった。However, for ship users, it is difficult to discern the gradual deterioration of sharpness, and it is also difficult to detect minute deformation of the outer blade, so they often continue to use the blade in a state of poor sharpness without realizing it.
かかる点に鑑みて、刃の表面に着色皮膜をコーティング
し、使用により着色皮膜が肌との摺接で磨耗して色が変
化することを利用したり、また外刃の一部に強度的に弱
い部分を作っておき、その部分が内刃との摺接により磨
耗して使用期間とともに欠落することを利用したりして
、使用者に外刃の寿命を知らせる方法が従来から提案さ
れている。In view of this, we coated the surface of the blade with a colored film, and took advantage of the fact that the color changes as the colored film wears away when it comes into contact with the skin, and we also coated a part of the outer blade with a strong coating. Conventionally, methods have been proposed to notify the user of the lifespan of the outer blade by creating a weak part and utilizing the fact that this part wears out due to sliding contact with the inner blade and falls off over time. .
しかしながら、上記方法では外刃の磨耗に対する寿命は
判別できるものの、例えば他物との衝突等により生じた
微小な外刃変形は発見できず、使用者にとって満足でき
るものではなかった。However, although the above method can determine the wear life of the outer cutter, it cannot detect minute deformation of the outer cutter caused by collision with another object, for example, and is not satisfactory to the user.
本発明は上記問題点に鑑みて成したもので、その目的と
するところは、刃先エツジの磨耗や外刃の微小変形を正
確にとらえ、外刃の寿命が到来したことを使用者に確実
に知らしめるようにした電気かみそりの外刃を提供する
ことにある。The present invention was created in view of the above problems, and its purpose is to accurately detect wear on the cutting edge and minute deformation of the outer cutter, and to ensure that the user is aware that the outer cutter has reached the end of its life. The purpose of the present invention is to provide an electric razor outer blade that is well known.
本発明は、かかる目的を達成するため、多数の刃孔を形
成した外刃の表面に高硬度の透明薄膜をコーティングし
たことを特徴とするものである。In order to achieve this object, the present invention is characterized in that the surface of the outer cutter in which a large number of cutter holes are formed is coated with a highly hard transparent thin film.
而して、外刃を長期間使用したきには肌との摺接により
透明Ｆｊｉｌｌｉ部が磨耗して、反射光の状態が変化し
、外刃が寿命末期となったことを知らしめるのであり、
また光干渉作用を利用し、外刃が変形すると変形部分と
他の部分との反射光が変わり、刃の変形部分が判別でき
るのである。Therefore, when the outer blade is used for a long period of time, the transparent Fjilli part will wear out due to sliding contact with the skin, and the state of reflected light will change, indicating that the outer blade has reached the end of its lifespan. ,
Furthermore, by utilizing optical interference, when the outer blade is deformed, the reflected light from the deformed part and other parts changes, making it possible to identify the deformed part of the blade.
（実施例〕
以下本発明の第１の実施例を図面第１図乃至第３図に基
づき説明する。第１図は外刃の断面図を示し、ステンレ
ス鋼で形成された外刃の母材１の表面に、ＣＶＤ法また
はＰＶＤ法により、ダイヤモンド状カーボン膜からなる
透明薄膜２をコーティングしている。前記透明薄膜２は
高硬度でその厚さは０．１μ以下にしている。第２図及
び第３図は外刃表面での光干渉の様子を示した図で、透
明薄膜２の表面で反射する光３と、前記透明薄膜２を通
過して、ステンレス鋼からなる外刃の母材１の表面で反
射する光４とがあり、これら反射光３゜４の光干渉は一
般的に次式で表される。すなわち、透明薄膜２の厚さを
ｄ、屈折率をｎ、屈折角をｒ、光の波長をλ、ｍは整数
とすると、
２ｎｄｃｏｓｒ＝ （２ｍ＋１）λ／２−明＝ ２ｍ
・λ／２ −１音
つまり、透明薄膜２の表面で反射する光３と外刃の母材
１で反射する光４との光路差２ｎｄｃ。(Embodiment) A first embodiment of the present invention will be described below with reference to drawings 1 to 3. Fig. 1 shows a cross-sectional view of the outer cutter, and the base material of the outer cutter is made of stainless steel. A transparent thin film 2 made of a diamond-like carbon film is coated on the surface of 1 by CVD or PVD. The transparent thin film 2 has high hardness and has a thickness of 0.1 μm or less. FIG. FIG. 3 is a diagram showing the state of light interference on the surface of the outer blade, in which light 3 reflected on the surface of the transparent thin film 2 and light 3 passing through the transparent thin film 2 are reflected from the base material of the outer blade made of stainless steel. There is light 4 reflected on the surface of the transparent thin film 2, and the optical interference of these reflected lights 3゜4 is generally expressed by the following formula.In other words, the thickness of the transparent thin film 2 is d, the refractive index is n, and the refraction angle is If r is the wavelength of light, λ is the wavelength of light, and m is an integer, then 2nd cosr = (2m + 1) λ/2 - bright = 2m
- λ/2 -1 sound, that is, the optical path difference 2ndc between the light 3 reflected on the surface of the transparent thin film 2 and the light 4 reflected on the base material 1 of the outer blade.
ｓｒがλ／２の偶数倍のとき光は強められて明るくなり
、奇数倍のときには逆に弱められて暗くなり、ｎとｄと
を適当に設定することにより波長λの違い、すなわち光
の色の違いによって、強く見える色の光と見えない色の
光とが生じてくる。従って、例えば第２図に示す外刃の
変形のない部分での光の反射により見える色は青である
が、第３図に示す外刃の変形部分での光の反射により見
える色は赤となり、反射光の色の違いによって微小変形
も確実に判別できるのである。また、外刃に変形がなく
ても長期に亙って使用した場合、透明薄膜は２は肌との
摺接摩耗により消失して外刃の母材ｌが表面に露出し、
反射光の状態が変わり、使用期間の末期であることを使
用者に知らしめるようになっている。When sr is an even multiple of λ/2, the light is strengthened and becomes brighter, and when it is an odd multiple, the light is weakened and becomes darker. By appropriately setting n and d, the difference in wavelength λ, that is, the color of the light, can be changed. Due to the difference in colors, there are colors of light that can be seen strongly and lights of colors that cannot be seen. Therefore, for example, the color that appears due to the reflection of light on the undeformed portion of the outer cutter shown in Figure 2 is blue, but the color that appears due to the reflection of light on the deformed portion of the outer cutter shown in Figure 3 is red. Even minute deformations can be reliably identified by the difference in the color of the reflected light. In addition, even if the outer cutter is not deformed, if it is used for a long period of time, the transparent thin film 2 will disappear due to abrasion due to sliding contact with the skin, and the base material 1 of the outer cutter will be exposed to the surface.
The state of the reflected light changes to notify the user that the device is at the end of its usage period.
次に本発明の第２の実施例を図面第４図に基づき説明す
る。この例は、透明薄膜２としてＳｉｎ、を使用すると
ともに、外刃の母材１と透明薄膜２との間に、香料を含
有した中間層フィルム５を設けたもので、長期間に亙っ
て使用したとき、透明薄ＨＩＪ、２が肌との摩耗により
消失し、中間層フィルム５に含有している香料が拡散し
て、使用期間の末期であることを使用者に知らしめるの
である。Next, a second embodiment of the present invention will be explained based on FIG. 4 of the drawing. In this example, Sin is used as the transparent thin film 2, and an intermediate layer film 5 containing a fragrance is provided between the outer blade base material 1 and the transparent thin film 2. When used, the transparent thin HIJ, 2 disappears due to abrasion with the skin, and the fragrance contained in the intermediate layer film 5 diffuses, informing the user that it is at the end of its use period.
更に、第３の実施例を図面第５図及び第６図に基づき説
明する。この実施例は外刃の頂上部に形成した凹溝６に
応力感応フィルム７を設けたもので、他は第１の実施例
と同様のものである。前記応力感応フィルム７は応力が
加わると色が変化するものであって、外刃の変形により
応力が加わるとその変形部分の色が変化して、使用者に
知らしめるものである。Furthermore, a third embodiment will be explained based on FIGS. 5 and 6. This embodiment is similar to the first embodiment except that a stress sensitive film 7 is provided in a groove 6 formed at the top of the outer cutter. The stress-sensitive film 7 changes color when stress is applied, and when stress is applied due to deformation of the outer cutter, the color of the deformed portion changes to notify the user.
以上の如く、本発明は多数の刃孔を形成した外刃の表面
に高硬度の透明薄膜をコーティングしたので、長期間使
用による寿命末期を知らしめることができ、しかも従来
発見し難いものであった外刃の微小変形も確実に発見で
きて、外刃の寿命が明確になり、刃の交換によりいつで
も切味のよい状態で電気かみそりが使用できる。As described above, since the present invention coats the surface of the outer cutter with a large number of cutter holes with a highly hard transparent thin film, it is possible to notify the end of its life after long-term use, and it is also difficult to detect in the past. Even minute deformations in the outer blade can be reliably detected, the lifespan of the outer blade becomes clear, and the electric razor can be used in a sharp state at any time by replacing the blade.
第１図は本発明の第１の実施例を示す断面拡大図、第２
図及び第３図は同上の外刃表面での光干渉の説明図、第
４図は本発明の第２実施例を示す断面拡大図、第５図は
本発明の第３の実施例を示す斜視図、第６図は同上の断
面拡大図である。
■−外刃の母材、２−透明薄膜。FIG. 1 is an enlarged sectional view showing the first embodiment of the present invention;
Figures 3 and 3 are explanatory diagrams of optical interference on the outer blade surface, Figure 4 is an enlarged sectional view showing the second embodiment of the present invention, and Figure 5 is a third embodiment of the present invention. The perspective view and FIG. 6 are enlarged cross-sectional views of the same. ■-Base material of outer blade, 2-Transparent thin film.
Claims (1)
膜をコーティングしたことを特徴とする電気かみそりの
外刃。1) An outer blade for an electric shaver characterized by coating the surface of the outer blade with a large number of blade holes with a highly hard transparent thin film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22164288A JPH0268091A (en) | 1988-09-05 | 1988-09-05 | Outer blade for electric shaver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22164288A JPH0268091A (en) | 1988-09-05 | 1988-09-05 | Outer blade for electric shaver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0268091A true JPH0268091A (en) | 1990-03-07 |
Family
ID=16769977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22164288A Pending JPH0268091A (en) | 1988-09-05 | 1988-09-05 | Outer blade for electric shaver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0268091A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6354008B1 (en) * | 1997-09-22 | 2002-03-12 | Sanyo Electric Co., Inc. | Sliding member, inner and outer blades of an electric shaver and film-forming method |
-
1988
- 1988-09-05 JP JP22164288A patent/JPH0268091A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6354008B1 (en) * | 1997-09-22 | 2002-03-12 | Sanyo Electric Co., Inc. | Sliding member, inner and outer blades of an electric shaver and film-forming method |
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