JPS5836993B2 - electric razor outer blade - Google Patents

Description

【発明の詳細な説明】 本発明は刃穴を有してこの刃穴より内部に導入した髭を
、内面に摺接する内刃との間で切断する電気かみそりの
外刃に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an outer blade of an electric shaver that has a blade hole and cuts hair introduced into the interior through the blade hole between an inner blade that is in sliding contact with the inner surface.

電気かみそりには犬別して内刃が回転駆動される回転式
と、内刃が往復駆動される往復式の両者があり、回転式
のものには第１図に示すようなドーム状の外刃１が、往
復式のものには第２図に示すような屈曲させた平板状の
外刃１が夫々用いられる。There are two types of electric razors: the rotary type, in which the inner blade is driven to rotate, and the reciprocating type, in which the inner blade is driven back and forth.The rotary type has a dome-shaped outer blade 1 as shown in Figure 1. However, in the reciprocating type, a bent flat outer cutter 1 as shown in FIG. 2 is used.

図中１０は外刃１を保持する外刃フレーム、１１は補強
板、１２は外刃取付穴である。In the figure, 10 is an outer cutter frame that holds the outer cutter 1, 11 is a reinforcing plate, and 12 is an outer cutter mounting hole.

これらの外刃１に設けられる刃穴２は、゛髭の導入のし
やすさを考慮していろいろな形状，配列のものが提供さ
れているが、寝ている毛やカールしているくせ毛などの
髭の導入を有効に行えるものはない。The blade holes 2 provided in these outer blades 1 are available in various shapes and arrangements in consideration of the ease of introducing beard hair, There is nothing that can effectively introduce a beard.

このために第３図に示すような立体スリット状の刃穴２
を持つ外刃１が提供されている。For this purpose, a three-dimensional slit-shaped blade hole 2 as shown in Fig.
An outer cutter 1 is provided.

Ｘ軸及びＹ軸とであらわされる平面に直交するＺ軸方向
にも平面から連続する立体のスリットである刃穴２を持
つこの外刃１は、図示例では回転式であるが、往復式の
ものにも提供されている。The outer cutter 1 has a cutting hole 2 which is a three-dimensional slit extending from the plane in the Z-axis direction which is perpendicular to the plane represented by the Things are also offered.

そして角部による肌の押圧で肌を緊張させて髭を起こし
刃穴２のＺ軸方向におけるスリット部から寝た毛やくせ
毛のような髭を導入するようにしているものであ）る。Then, the pressure on the skin by the corner parts makes the skin tense and raises the beard, and the beard, such as curly hair or curly hair, is introduced through the slit in the Z-axis direction of the blade hole 2).

しかしながら、この外刃１においても立体スリット状の
刃穴２を設けている突条部の高さ山は回転式及び往復式
を問わずに一定で、従って肌の引き伸ばし量，歪が各部
において一定であり、単一の緊張作用及び髭の起毛作用
しか与えられず、各種の寝た毛やくせ毛のような髭を導
入するには不十分である。However, in this outer cutter 1 as well, the height of the protrusion in which the three-dimensional slit-shaped cutter hole 2 is provided is constant regardless of whether it is a rotary type or a reciprocating type, and therefore the amount of stretching and distortion of the skin is constant at each part. However, it provides only a single tensioning action and beard raising action, which is insufficient to introduce various types of lying hair or curly hair.

本発明はこのような点に鑑み提供したものであり、その
主たる目的とするところは刃穴の列間に存在する複数本
のリプの外表面に凹所乃至凸所を設げるとともにこれら
の凹所乃至凸所の深さ，高さを各部において異ならしめ
て、凹所乃至凸所にて肌に加えられる歪で生じる肌の緊
張作用及び髭の起毛作用に各部で差が生じるようにし、
もって各種の寝た毛やくせのある毛などの髭の刃穴への
導入効率を向上せしめ、そり残しを少くするとともにそ
り速度を向上させた電気かみそりの外刃を提供するにあ
り、また他の目的とするところは各部において肌の緊張
作用及び髭の起毛作用に差があるにもかかわらず、各部
の刃穴から外刃内面に突出する肌の量が略等しくて、肌
に対する刺激を外刃全面において低レベルに押えられ、
良好な切れ味を発揮し得る電気かみそりの外刃を提供す
るにある。The present invention has been provided in view of these points, and its main purpose is to provide recesses or protrusions on the outer surface of a plurality of lips existing between rows of blade holes, and to The depth and height of the recesses and protrusions are made different in each part, so that the strain applied to the skin at the recesses and protrusions causes differences in skin tension and beard raising action in each part,
It is an object of the present invention to provide an outer blade for an electric razor, which improves the efficiency of introducing various types of lying hair, curly hair, etc. into the blade hole, reduces the amount of shaving left behind, and improves the shaving speed. The purpose of this is that although there are differences in skin tension and beard raising effects in each part, the amount of skin protruding from the blade hole in each part to the inner surface of the outer blade is approximately equal, thereby eliminating irritation to the skin. The entire surface of the blade is held down to a low level,
To provide an outer blade for an electric razor that can exhibit good sharpness.

以下本発明を図示実施例に基き詳述する。The present invention will be described in detail below based on illustrated embodiments.

外刃１は回転式のものであっても、また往復式のもので
あってもよく、更には刃穴２の配列もどのようなもので
あってもよいが、一例として回転式のものにおいて、渦
巻状に刃穴２を配列したものを第４図に示す。The outer cutter 1 may be a rotary type or a reciprocating type, and furthermore, the cutter holes 2 may be arranged in any manner, but as an example, a rotary type FIG. 4 shows the blade holes 2 arranged in a spiral shape.

そして各刃穴２を囲むリプのうち、刃穴２の列間に存在
する渦巻状に連続したリプ３の外表面に凹所４乃至凸所
５を設けてある。Among the lips surrounding each blade hole 2, recesses 4 to protrusions 5 are provided on the outer surface of the spirally continuous lip 3 existing between the rows of the blade holes 2.

リプ３に設ける凹所４の深さは第５図に示すように外刃
１の板厚以内であり、内刃９の外刃１内面への摺接を妨
げるものではない。The depth of the recess 4 provided in the lip 3 is within the thickness of the outer cutter 1, as shown in FIG. 5, and does not prevent the inner cutter 9 from coming into sliding contact with the inner surface of the outer cutter 1.

凸所５は第６図に示すように中央が高く、両側が徐々に
低くなる形状とする。As shown in FIG. 6, the convex portion 5 has a shape that is high at the center and gradually lowered on both sides.

そして凹所４の深さＨ乃至凸所５の高さＨを各リプ３に
おいて異ならしめてある。The depth H of the concave portion 4 and the height H of the convex portion 5 are made different for each lip 3.

同一リブ３において凹所４の深さＨや凸所５の高さが連
続的に変化するようにしてもよい。In the same rib 3, the depth H of the recess 4 and the height of the protrusion 5 may be continuously changed.

このように深さや高さが各部で異なる凹所４乃至凸所５
がリプ３に設けられている外刃１においては、凹所４乃
至凸所５が外表面に存在するリフ３によって次のような
作用が生じる。In this way, the depth and height differ in each part from concavity 4 to convexity 5
In the outer cutter 1 in which the lip 3 is provided, the following effect occurs due to the rift 3 having the recesses 4 and the protrusions 5 on the outer surface.

すなわち、凹所４が設けられている場合について説明す
れば、第７図に示すように、複数本のリブ３に夫々設け
られている凹所４の深さがＨ１． Ｈ２． Ｈ３であり
、Ｈ１〈Ｈ２〈Ｈ３である時、外刃１の外表面を肌に押
し付けると凹所４内に肌の一部が逃げ込むことによって
生じる肌の引き伸ばし量△Ｌｌ ｅ△Ｌ２，△Ｌ３は、
凹所４の断面形状や深さなどの形状によって決まる。That is, to explain the case where the recesses 4 are provided, as shown in FIG. 7, the depth of the recesses 4 provided in each of the plurality of ribs 3 is H1. H2. H3, and when H1<H2<H3, when the outer surface of the outer blade 1 is pressed against the skin, a part of the skin escapes into the recess 4, resulting in the amount of stretching of the skin △Ll e△L2, △L3 teeth,
It is determined by the cross-sectional shape and depth of the recess 4.

モして凹所４の深さが深いほど肌の引き伸ばし量も大き
くなるから△Ｌ１〈△Ｌ２〈△Ｌ３ となる。Furthermore, the deeper the depth of the recess 4, the greater the amount of stretching of the skin, so △L1〈△L2〈△L3.

それ故に各リプ３の間隔に対応する肌Ｓ，，Ｓ２，Ｓ３
の歪と近似的に等しいと考えられる２△Ｌ１／Ｌ１，
（△Ｌ，＋△Ｌ２）／Ｌ２．（△Ｌ２＋△Ｌ３）／Ｌ３
はＬ１ ｅＬ２ ＊ Ｌ３の数値が等しい時、２△Ｌ１
／Ｌ１〈（△Ｌ１＋△Ｌ２ ） ／ Ｌ２ ＜ （△Ｌ
２＋△Ｌ３）／Ｌ３ となる。Therefore, the skin S, , S2, S3 corresponding to the interval of each rep 3
2ΔL1/L1, which is considered to be approximately equal to the distortion of
(△L, +△L2)/L2. (△L2+△L3)/L3
is L1 eL2 * When the numbers of L3 are equal, 2△L1
/L1〈(△L1+△L2) /L2＜(△L
2+ΔL3)/L3.

凸所５を外表面に有するリブ３の場合にもこれと同様で
ある。The same applies to the rib 3 having the protrusion 5 on the outer surface.

そして肌の歪が凹所４の深さ乃至凸所５の高さの差によ
って各リブ３間において異なることから、第８図に示す
歪による肌の緊張作用から生ずるところの髭７の起毛作
用△θ及び髭７の毛根の絞り出し量△ａも各部Ｓ１，Ｓ
２，Ｓ３によって異なり、この結果、各種の寝た毛やく
せのある毛などの雑他の特性の髭をいずれかのリプ３間
の刃穴２で補捉して切断することができるものである。Since the distortion of the skin differs between each rib 3 due to the difference in the depth of the recess 4 or the height of the protrusion 5, the hair raising effect of the beard 7 arises from the skin tension effect due to the distortion shown in FIG. Δθ and the squeezed-out amount Δa of the hair roots of the beard 7 are also at each part S1, S
2. It differs depending on the S3, and as a result, it is possible to capture and cut beards with various characteristics such as various lying hairs and curly hairs with the blade hole 2 between the lips 3. be.

ところで、刃穴２を通って外刃１内面に突出する肌Ｓの
突出量ｌＯは外刃１の全面にわたって均一且つ小量にす
ることが、内刃９による刺激や内刃９と外刃１とのクロ
スネスを満足させる必要条件である。By the way, the protrusion amount lO of the skin S that protrudes to the inner surface of the outer cutter 1 through the cutter hole 2 should be made uniform and small over the entire surface of the outer cutter 1 to prevent stimulation by the inner cutter 9 and the inner cutter 9 and the outer cutter 1. This is a necessary condition to satisfy the crossness with.

一方、肌の総突出量ＡＴは、刃穴２の開口面積の大きさ
に比例することが明らかであり、従って各部において刃
穴２の開口面積を等しくなるようにすればよいわけであ
るが、肌Ｓの刃穴２への嵌入による突出も一つの歪であ
り、しかもこの歪は、リブ３の外表面に設けられている
凹所４乃至凸所５によって肌に加えられた歪とは別のも
のである。On the other hand, it is clear that the total protrusion AT of the skin is proportional to the size of the opening area of the blade hole 2, and therefore, it is sufficient to make the opening area of the blade hole 2 equal in each part. The protrusion of the skin S due to insertion into the blade hole 2 is also one strain, and this strain is different from the strain applied to the skin by the recesses 4 and protrusions 5 provided on the outer surface of the rib 3. belongs to.

そして垂直応力がある値の時、肌のヤング率はもちろん
各部で一定であるから肌の総歪（前記両歪を合わせたも
の）も各部で一定の値をとる。When the vertical stress is a certain value, the Young's modulus of the skin is of course constant in each part, so the total strain of the skin (the sum of the above two strains) also takes a constant value in each part.

この時、凹所４乃至凸所５で加えられる歪は、前述のよ
うにこれら凹所４乃至凸所５の深さや高さの大きいとこ
ろで大きくなるために、刃穴２の開口面積が一定である
と、深さや高さの大きい凹所４乃至凸所５を持つリブ３
で囲まれた刃穴２への突出のための肌の歪が逆に小さく
なってしまい、突出量ＡＴが小さくなってしまう。At this time, the strain applied at the recesses 4 to the protrusions 5 increases where the depth and height of the recesses 4 to the protrusions 5 are large, as described above, so the opening area of the blade hole 2 is not constant. If so, the rib 3 has a concave portion 4 or a convex portion 5 having a large depth or height.
On the contrary, the distortion of the skin due to protrusion into the blade hole 2 surrounded by is reduced, and the protrusion amount AT becomes small.

従って小さい歪で大きい突出量７Ｔを得るために、つま
り凹所４や凸所５の深さ乃至高さが小さいところに囲ま
れた刃穴２での突出量と等しい突出量を得るために、囲
んでいるリブ３の凹所４や凸所５の深さ乃至高さが大き
いところほど、刃穴２の開口面積をより大きくするので
ある。Therefore, in order to obtain a large protrusion amount 7T with small strain, that is, to obtain a protrusion amount equal to the protrusion amount in the blade hole 2 surrounded by the recesses 4 and the protrusions 5 with small depths and heights. The larger the depth or height of the recesses 4 and protrusions 5 of the surrounding rib 3, the larger the opening area of the blade hole 2 is made.

刃穴２の長さＭと幅Ｂとのいずれか．あるいは両者を可
減して開口面積を大きくしたり、小さくしたりするわけ
であるが、長さＭと幅Ｂとは１＞Ｂ／Ｍ＞０．３とする
のが実際的である。Either the length M or the width B of the blade hole 2. Alternatively, both can be reduced to increase or decrease the opening area, but it is practical to set the length M and the width B to 1>B/M>0.3.

このように刃穴２を形或することにより各部で均一な肌
の突出量を確保することができ、突出量ｌＯのレベルを
小さく保つことで刺激のない均一で匿好なそり味を得ら
れるものである。By shaping the blade hole 2 in this way, it is possible to ensure a uniform amount of skin protrusion in each part, and by keeping the level of protrusion lO small, it is possible to obtain a uniform and pleasant warp taste without irritation. It is something.

以上のように本発明においては、刃穴の列間に位置する
複数本のリブの外表面に凹所乃至凸所な設けてこの凹所
の深さ若しくは凸所の高さを各部において異ならしめた
ものであるから、凹所乃至凸所によって加えられる肌の
歪みが、凹所の深さ若しくは凸所の高さの差により各部
で差が生じ、この結果肌の緊張作用，髭の起毛作用等に
各部で差が生じて寝ている毛やカールしたようなくせの
ある毛などの各種の特性の髭を刃穴に導入でき、そり残
しがなく、またそり速度も向上するものである。As described above, in the present invention, concave or convex portions are provided on the outer surface of the plurality of ribs located between the rows of blade holes, and the depth of the concave portions or the height of the convex portions is made different in each portion. Therefore, the distortion of the skin caused by concavities or convexities varies depending on the depth of the concavities or the height of the convexities, resulting in skin tension and beard hair raising. It is possible to introduce various characteristics of hair into the blade hole, such as hair that is lying flat with differences in the shape of each part, hair that is curly, etc., so that no unshaved hair is left behind, and the shaving speed is also improved.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は回転式電気かみそりの外刃の斜祝図、第２図は
往復式電気かみそりの外刃の斜親図、第３図は従来例の
破断斜視図、第４図は本発明一実施例の概略平面図、第
５図及び第６図は同上の要部析面図、第７図は同上の断
面図、第８図は髭の説明図、第９図は刃穴からの肌の突
出状態を示す断面図、第１０図は刃穴の平面図である。 １は外刃、２は刃穴、３はリブ、４は凹所、５は凸所を
示す。Fig. 1 is a perspective view of the outer cutter of a rotary electric shaver, Fig. 2 is a perspective view of the outer cutter of a reciprocating electric shaver, Fig. 3 is a cutaway perspective view of a conventional example, and Fig. 4 is a perspective view of the outer cutter of a reciprocating electric shaver. A schematic plan view of the embodiment, Figures 5 and 6 are analytical views of the main parts of the above, Figure 7 is a sectional view of the same as the above, Figure 8 is an explanatory diagram of the beard, and Figure 9 is the skin from the blade hole. FIG. 10 is a cross-sectional view showing the protruding state, and FIG. 10 is a plan view of the blade hole. 1 is an outer blade, 2 is a blade hole, 3 is a rib, 4 is a recess, and 5 is a protrusion.

Claims (1)

【特許請求の範囲】 １ 刃穴の列間に位置する複数本のリブの外表面に凹所
乃至凸所を設けるとともに凹所の深さ若くは凸所の高さ
を各部において異ならしめて或ることを特徴とする電気
かみそりの外刃。 ２ 刃穴を囲むリプに設けられている凹所の深さ乃至凸
所の高さが大であるほど、刃穴の開口面積を犬として成
ることを特徴とする特許請求の範囲第１項記載の電気か
みそりの外刃。[Claims] 1. Concave or convex portions are provided on the outer surface of the plurality of ribs located between rows of blade holes, and the depth of the concave portions or the height of the convex portions are made different in each part. The outer blade of an electric razor is characterized by: 2. Claim 1, characterized in that the larger the depth of the recess or the height of the protrusion provided in the lip surrounding the blade hole, the larger the opening area of the blade hole becomes. The outer blade of an electric razor.