JP4777253B2 - Inner blade body of vibration driven razor head - Google Patents

Inner blade body of vibration driven razor head Download PDF

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JP4777253B2
JP4777253B2 JP2006538739A JP2006538739A JP4777253B2 JP 4777253 B2 JP4777253 B2 JP 4777253B2 JP 2006538739 A JP2006538739 A JP 2006538739A JP 2006538739 A JP2006538739 A JP 2006538739A JP 4777253 B2 JP4777253 B2 JP 4777253B2
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blade
cutting edge
cutting
inner blade
edge
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JP2007510480A (en
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ラオウル、バーダー
ディートマル、コルン
ホルスト、マンネバッハ
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ブラウン ゲーエムベーハー
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • B26B19/044—Manufacture and assembly of cutter blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Dry Shavers And Clippers (AREA)

Description

本発明は、振動（往復）駆動式かみそりヘッドの内刃体に関する。また本発明は、そのような内刃体を備えた振動駆動式かみそりヘッドおよび体毛の切断方法に関する。   The present invention relates to an inner blade of a vibration (reciprocating) drive type razor head. The present invention also relates to a vibration-driven razor head provided with such an inner blade and a method for cutting body hair.

振動駆動式かみそりヘッドの内刃体は、外刃体と協働して体毛を切断するために使われる。そのために、内刃体は外刃体に対して平行に相対振動運動させられ、その際、外刃体に対して或る押圧力で押し付けられる。外刃体は例えば、複数の体毛導入孔を有する網刃として形成されている。体毛導入孔を通して体毛だけでなく、皮膚も内刃体の活動範囲に到達するので、皮膚が内刃体に接触して刺激を受けたり傷ついたりする恐れがある。   The inner blade body of the vibration-driven razor head is used to cut hair by cooperating with the outer blade body. For this purpose, the inner blade body is caused to perform a relative vibration motion in parallel with the outer blade body, and at that time, the inner blade body is pressed against the outer blade body with a certain pressing force. The outer blade body is formed, for example, as a mesh blade having a plurality of hair introduction holes. Since not only the body hair but also the skin reaches the active range of the inner blade through the body hair introduction hole, there is a possibility that the skin contacts the inner blade and is stimulated or damaged.

これを防止するために特許文献１に、各対の内刃の互いに隣り合う刃先同士の間の刃先間隔を、網刃の体毛導入孔の幅より狭く形成することが提案されている。さらに、各対の内刃の互いに反対の側に位置する面に、小さな摩擦係数の材料から成る被覆層が形成されている。内刃が被覆層の範囲で体毛あるいは皮膚に接触したとき、内刃は切断作用を及ぼすことなく、すべり抜ける。これに対して、内刃が刃先の部位で体毛に接触したとき、体毛は刃先でつかまれ、切断される。その際、皮膚の刺激や傷つきは、皮膚が被覆層によって持ち上げられ、小さな刃先間隔のために刃先ときつく接触しないことによって、十分に防止される。   In order to prevent this, Patent Document 1 proposes that the distance between the blade edges adjacent to each other of each pair of inner blades is made narrower than the width of the body hair introduction hole of the mesh blade. Furthermore, a coating layer made of a material having a small coefficient of friction is formed on the surfaces of each pair of inner blades located on opposite sides. When the inner blade comes into contact with body hair or skin in the range of the coating layer, the inner blade slips without exerting a cutting action. On the other hand, when the inner blade comes into contact with the body hair at the portion of the blade edge, the body hair is grasped by the blade edge and cut. In this case, skin irritation and damage are sufficiently prevented by the skin being lifted by the covering layer and not touching the cutting edge due to the small cutting edge spacing.

特許文献１で公知の電気かみそりは確かに、皮膚に優しいひげそりを可能にする。もっとも、内刃が片側でしか切断せず、従って、内刃と体毛との接触の一部でしか体毛の切り詰めが生じない、という点でひげそりの完璧性が害されている。
特開平１０−１１８３５８号明細書 The electric razor known from US Pat. No. 6,057,088 certainly allows a skin-friendly shave. However, the perfection of shaving is impaired in that the inner blade can be cut only on one side, and therefore the hair is cut off only at a part of the contact between the inner blade and the body hair.
JP-A-10-118358

本発明の課題は、できるだけ完璧で皮膚に優しいひげそりを生じせることにある。   The object of the present invention is to produce a shave that is as perfect and gentle to the skin as possible.

この課題は特許請求の範囲請求項１に記載の特徴によって解決される。
本発明に基づく振動駆動式かみそりヘッドの内刃体は、それぞれ対を成して配置された複数の刃を有し、各対の刃の互いに向かい合う側に、体毛を切断するための第１刃先が形成されている。本発明に基づく内刃体の特徴は、各対の刃の互いに反対の側に、第１刃先より弱い切断作用を有する体毛を切断するための第２刃先が形成されている、ことにある。 This problem is solved by the features of claim 1.
An inner blade body of a vibration-driven razor head according to the present invention has a plurality of blades arranged in pairs, and a first blade edge for cutting body hairs on opposite sides of each pair of blades Is formed. The inner blade body according to the present invention is characterized in that a second blade edge for cutting hair having a cutting action weaker than the first blade edge is formed on the opposite sides of each pair of blades.

本発明の利点は、ひげそり快適性を害することなく、非常に完璧なひげそりが得られることにある。特に、刃の両側面が異なって形成され、それに伴って皮膚に対する優しさも異なっているにもかかわらず、刃の両側がひげそり作用に貢献する、という利点を有している。   An advantage of the present invention is that a very perfect shaving can be obtained without compromising the shaving comfort. In particular, it has the advantage that both sides of the blade contribute to the shaving action, despite the fact that both sides of the blade are formed differently and accordingly the gentleness to the skin is also different.

本発明に基づく内刃体の有利な実施態様において、第１刃先が、第１刃先を形成する２つの面の間に、第２刃先が有する第２切刃角より小さな第１切刃角を有している。第１切刃角は鋭角として形成され、好適には、約４５°である。第２切刃角は、好適には、約９０°である。また、第１刃先と第２刃先の少なくとも一方が最大５μｍの刃先半径を有している、ことが有利である。さらに、互いに隣り合う第１刃先同士の間の刃先間隔が、互いに隣り合う第２刃先同士の間の刃先間隔より小さい、ことが有利である。この条件下において、皮膚は、互いに隣り合う第１刃先間に、互いに隣り合う第２刃先間より、本質的に僅かしかふくらみ込まない。その結果、比較的鋭い第１刃先により皮膚を刺激したり傷つけたりする恐れがなくなる。特に、互いに隣り合う第１刃先同士の間の刃先間隔は約２５０μｍであり、互いに隣り合う第２刃先同士の間の刃先間隔は約８００μｍである。   In an advantageous embodiment of the inner blade according to the present invention, the first cutting edge has a first cutting edge angle smaller than the second cutting edge angle of the second cutting edge between the two surfaces forming the first cutting edge. Have. The first cutting edge angle is formed as an acute angle and is preferably about 45 °. The second cutting edge angle is preferably about 90 °. In addition, it is advantageous that at least one of the first cutting edge and the second cutting edge has a cutting edge radius of at most 5 μm. Furthermore, it is advantageous that the cutting edge interval between the first cutting edges adjacent to each other is smaller than the cutting edge interval between the second cutting edges adjacent to each other. Under this condition, the skin swells essentially slightly between the first cutting edges adjacent to each other than between the second cutting edges adjacent to each other. As a result, there is no risk of irritating or damaging the skin with the relatively sharp first cutting edge. In particular, the cutting edge interval between the first cutting edges adjacent to each other is approximately 250 μm, and the cutting edge interval between the second cutting edges adjacent to each other is approximately 800 μm.

本発明はまた、本発明に基づく内刃体が装備された振動駆動式かみそりヘッドに関する。本発明に基づくかみそりヘッドは、複数の体毛導入孔を備えた外刃体を有し、内刃体の運動方向に対して平行な方向における体毛導入孔の最大寸法は、内刃体の刃の互いに隣り合う第１刃先同士の間の刃先間隔より大きいか、内刃体の刃の互いに隣り合う第２刃先同士の間の刃先間隔より小さいかの少なくとも一方にされている。これによって、外刃体の体毛導入孔を通しての皮膚の或るふくらみ込みも許され、従って、体毛が皮膚に非常に近くで切断される。同時に、皮膚を刺激したり傷つけたりする結果を招く皮膚と刃先との強い接触は防止される。   The invention also relates to a vibration-driven razor head equipped with an inner blade according to the invention. The razor head according to the present invention has an outer blade body provided with a plurality of body hair introduction holes, and the maximum size of the body hair introduction hole in a direction parallel to the movement direction of the inner blade body is the blade of the inner blade body. It is at least one of larger than the blade edge | interval between the 1st blade edges adjacent to each other, or smaller than the blade edge | interval between the 2nd blade edges adjacent to each other of the blades of the inner blade body. This also allows some swelling of the skin through the body hair introduction hole of the outer blade body, thus cutting the body hair very close to the skin. At the same time, strong contact between the skin and the cutting edge that results in irritation or damage to the skin is prevented.

本発明に基づく内刃体と外刃体との振動相対運動によって体毛を切断する方法は、少なくとも数本の体毛が、まず第２刃先によって、続いて、第２刃先より大きな切断作用を有する同じ内刃の第１刃先によって切断される、ことを特徴としている。   The method of cutting body hairs by vibration relative motion between the inner blade body and the outer blade body according to the present invention is the same in which at least several body hairs have a cutting action larger than that of the second blade edge first by the second blade edge. It is characterized by being cut by the first cutting edge of the inner blade.

第２刃先による体毛の予切詰めによって、第１刃先が互いに密に接近され、これによって、皮膚に非常に優しく作業する内刃体を採用することを可能にする。予め切り詰められた体毛は、第１刃先間の非常に狭い隙間の中にも問題なく侵入し、そこで皮膚に非常に近くで切断される。皮膚にできるだけ近くでの体毛切断に関して、第１刃先が体毛との接触時に体毛を切り込み、体毛をその切込み部位で切断する、ことが有利である。   By pre-cutting the body hair with the second cutting edge, the first cutting edges are brought in close proximity to each other, thereby making it possible to employ an inner cutting body that works very gently on the skin. The previously trimmed body hair also enters the very narrow gap between the first cutting edges without problems, where it is cut very close to the skin. With regard to cutting the hair as close as possible to the skin, it is advantageous that the first cutting edge cuts the hair when in contact with the hair and cuts the hair at the cut site.

以下図に示した実施例を参照して本発明を詳細に説明する。
図１には、本発明に基づいて形成された電気かみそりのかみそりヘッドの実施例における幾つかの構成要素が概略断面図で示されている。ここでは、内刃体１およびこの内刃体１が接する網刃（外刃体）２が示されている。この図で選択された断面は、内刃体１と網刃２との相対運動方向に対して平行に延びており、ここでは一部領域だけ示されている。内刃体１は規則的順序で配置された複数の刃３を有している。各刃３は第１刃先４と、この第１刃先４とは反対の側に配置された第２刃先５とを有している。刃３の幾何学形状は図２に詳しく示されている。 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.
FIG. 1 is a schematic cross-sectional view of some components of an embodiment of an electric razor razor head formed in accordance with the present invention. Here, an inner blade body 1 and a mesh blade (outer blade body) 2 with which the inner blade body 1 is in contact are shown. The cross section selected in this figure extends parallel to the relative movement direction of the inner blade body 1 and the mesh blade 2, and only a partial region is shown here. The inner blade body 1 has a plurality of blades 3 arranged in a regular order. Each blade 3 has a first blade edge 4 and a second blade edge 5 disposed on the side opposite to the first blade edge 4. The geometry of the blade 3 is shown in detail in FIG.

第１刃先４および第２刃先５はそれぞれ、内刃体１の連続して配設された刃３において第１刃先４および第２刃先５が、２つずつ互い違いに連続して位置するように方向づけられている。これは、１つの刃３と、これに隣り合う刃３とが対（組）を成していることを意味し、その互いに向かい合う側に第１刃先４が形成され、互いに反対の側に第２刃先５が形成されている。互いに隣り合う第１刃先４同士の間に刃先間隔Ａ１が形成され、こ同士の間の刃先間隔Ａ１は、互いに隣り合う第２刃先５同士の間の刃先間隔Ａ２より小さくされている。好適には、第１刃先４同士の間の刃先間隔Ａ１は約２５０μｍであり、第２刃先５同士の間の刃先間隔Ａ２は約８００μｍである。内刃体１は、例えば電型法、エッチング法、刻印加工法、打抜き加工法あるいは研削加工法のような一連の種々の技術で製造される。   Each of the first blade edge 4 and the second blade edge 5 is positioned so that the first blade edge 4 and the second blade edge 5 are alternately and continuously positioned two by two in the blades 3 continuously disposed in the inner blade body 1. Oriented. This means that one blade 3 and a blade 3 adjacent to the blade 3 form a pair (a set), and the first blade edge 4 is formed on the side facing each other, and the first blade 4 is formed on the opposite side. Two cutting edges 5 are formed. A cutting edge distance A1 is formed between the first cutting edges 4 adjacent to each other, and a cutting edge distance A1 between them is smaller than a cutting edge distance A2 between the second cutting edges 5 adjacent to each other. Preferably, the cutting edge distance A1 between the first cutting edges 4 is about 250 μm, and the cutting edge distance A2 between the second cutting edges 5 is about 800 μm. The inner blade body 1 is manufactured by a series of various techniques such as an electroforming method, an etching method, a stamping method, a punching method, or a grinding method.

図１に示された網刃２は、複数の体毛導入孔７を有し、各体毛導入孔７をそれぞれ囲い込むリブ６から成っている。内刃体１の運動方向に対して平行な方向における体毛導入孔７の最大横寸法Ａ３は、特に、内刃体１の互いに隣り合う第１刃先４同士の間の刃先間隔Ａ１より大きく、および／又は、内刃体１の互いに隣り合う第２刃先５同士の間の刃先間隔Ａ２より小さい、ように選択されている。その網刃２の体毛導入孔７の最大横寸法Ａ３は、代表的には、約５００μｍである。ひげそり過程中、内刃体１は刃先４、５の部位で網刃２のリブ６に接し、網刃２に対して振動（往復）運動する。その振動運動は、網刃２に対して平行方向に延び、図１に二重矢印で示されている。後に図３および図４を参照してひげそり過程を詳細に説明する。   The mesh blade 2 shown in FIG. 1 has a plurality of body hair introduction holes 7, and includes ribs 6 that surround each body hair introduction hole 7. The maximum lateral dimension A3 of the hair introduction hole 7 in a direction parallel to the movement direction of the inner blade body 1 is particularly larger than the blade edge interval A1 between the first blade edges 4 adjacent to each other in the inner blade body 1, and Or, it is selected so as to be smaller than the blade edge interval A2 between the second blade edges 5 adjacent to each other of the inner blade body 1. The maximum lateral dimension A3 of the body hair introduction hole 7 of the mesh blade 2 is typically about 500 μm. During the shaving process, the inner blade body 1 comes into contact with the rib 6 of the mesh blade 2 at the portions of the blade edges 4 and 5 and vibrates (reciprocates) with respect to the mesh blade 2. The oscillating motion extends in a direction parallel to the mesh blade 2 and is indicated by a double arrow in FIG. The shaving process will be described in detail later with reference to FIGS.

図２には、図１に示された内刃体１の刃３における外側輪郭が拡大して示されている。刃３の第１刃先４は、互いに９０°より小さな第１切刃角αを成す２つの面によって形成され、即ち、第１切刃角αは鋭角に形成されている。好適には、第１切刃角αは約４５°である。刃３の第２刃先５は、好適には、約９０°の第２切刃角βを有している。原理的には、第２切刃角βは有利な値と異ならせることもできる。もっとも、いずれにしても、第２切刃角βは第１切刃角αより大きく、従って、第２刃先５は第１刃先４より弱い切断作用を有する。第１刃先４および第２刃先５の刃先半径は５μｍ以下である。   2 shows an enlarged outer contour of the blade 3 of the inner blade body 1 shown in FIG. The first cutting edge 4 of the blade 3 is formed by two surfaces that form a first cutting edge angle α smaller than 90 °, that is, the first cutting edge angle α is formed as an acute angle. Preferably, the first cutting edge angle α is about 45 °. The second cutting edge 5 of the blade 3 preferably has a second cutting edge angle β of about 90 °. In principle, the second cutting edge angle β can also be varied from an advantageous value. However, in any case, the second cutting edge angle β is larger than the first cutting edge angle α, and therefore the second cutting edge 5 has a weaker cutting action than the first cutting edge 4. The cutting edge radii of the first cutting edge 4 and the second cutting edge 5 are 5 μm or less.

図３には、本発明に基づくかみそりヘッドの運転中の瞬間状態が概略的に断面図で示されている。ここでは、網刃２の１つの体毛導入孔７の周辺領域およびこの領域にわたって移動する内刃体１の一対の刃３が示されている。この図には、網刃２の体毛導入孔７の内部に、皮膚８の一部が体毛９と共に示されている。その皮膚８は、網刃２への押付けによって、皮膚８が部分的に、刃３の刃先４、５が移動する切断平面１０を越えて突出するほどに大きく網刃２の体毛導入孔７の中にふくらみ込む。図示された時点で、内刃体１の刃３は矢印の方向に右から左に移動し、その際、先行する刃３が第２刃先５で皮膚８にちょうど接触する。   FIG. 3 shows a schematic sectional view of the instantaneous state during operation of the razor head according to the invention. Here, a peripheral region of one body hair introduction hole 7 of the mesh blade 2 and a pair of blades 3 of the inner blade body 1 moving over this region are shown. In this figure, a part of the skin 8 is shown together with the hair 9 inside the hair introduction hole 7 of the mesh blade 2. The skin 8 is pressed into the mesh blade 2 so that the skin 8 partially protrudes beyond the cutting plane 10 on which the cutting edges 4 and 5 of the blade 3 move. Inflate inside. At the time shown, the blade 3 of the inner blade body 1 moves from right to left in the direction of the arrow, and at this time, the preceding blade 3 just contacts the skin 8 at the second blade edge 5.

内刃体１の継続運動経過中、先行する刃３が皮膚ふくらみ部を第２刃先５で前へ移動させ、その皮膚部を網刃２の体毛導入孔７から押し出す。その際、第２刃先５の大きな第２切刃角βのために、皮膚８を傷つけたり刺激したりしない。最終的に、先行する刃３は第２刃先５で、網刃２の体毛導入孔７の中に突出している体毛９に突き当たる。先行する刃３は体毛９を、この体毛９に切り込みを入れることなく、第２刃先５で、網刃２の体毛導入孔７を境界づけるリブ６まで変位させる。その際、第２刃先５は体毛９に沿って幾分すべる。体毛９は網刃２のリブ６に衝突した時に第２刃先５で切断される。もっとも、その切断は、中間時点のすべりのために、第２刃先５が最初に接触した個所ではなく、皮膚８からかなり離れた個所で行われる。   During the continuous movement of the inner blade body 1, the preceding blade 3 moves the skin bulge portion forward by the second blade edge 5 and pushes the skin portion from the body hair introduction hole 7 of the mesh blade 2. At that time, because of the large second cutting edge angle β of the second cutting edge 5, the skin 8 is not damaged or stimulated. Finally, the leading blade 3 is the second cutting edge 5 and abuts against the hair 9 protruding into the hair introduction hole 7 of the mesh blade 2. The preceding blade 3 displaces the body hair 9 to the rib 6 that borders the body hair introduction hole 7 of the mesh blade 2 at the second blade edge 5 without cutting the body hair 9. At that time, the second cutting edge 5 slides somewhat along the hair 9. The hair 9 is cut by the second cutting edge 5 when it collides with the rib 6 of the mesh blade 2. However, the cutting is performed not at the position where the second cutting edge 5 first contacts, but at a position far away from the skin 8 due to the slip at the intermediate point.

先行する刃３に対して、刃先間隔Ａ１で後続の刃３が続く。その後続の刃３は第１刃先４を前にして移動する。皮膚８が先行する刃３の第２刃先５によって網刃２の体毛導入孔７から押し出され、先行する刃３の第１刃先４と後続の刃３の第１刃先４との間の狭い隙間にふくらみ込んでいないので、第１刃先４の小さな第１切刃角αにもかかわらず、皮膚８を刺激したり傷つけたりしない。内刃体１の継続運動経過中、先行する刃３の第２刃先５による切断直後に再び直立している、先行する刃３で切り詰められた体毛９に対して、後続の刃３が第１刃先４で突き当たる。この状態は図４に示されている。   The following blade 3 follows the leading blade 3 at the blade edge interval A1. The subsequent blade 3 moves with the first blade edge 4 in front. Narrow gap between the first blade edge 4 of the preceding blade 3 and the first blade edge 4 of the subsequent blade 3 when the skin 8 is pushed out from the body hair introduction hole 7 of the mesh blade 2 by the second blade edge 5 of the preceding blade 3. The skin 8 is not stimulated or damaged regardless of the small first cutting edge angle α of the first cutting edge 4. During the continuous movement of the inner blade body 1, the subsequent blade 3 is first with respect to the body hair 9, which is upright again immediately after the cutting of the preceding blade 3 by the second cutting edge 5, and is trimmed with the preceding blade 3. It strikes at the cutting edge 4. This state is shown in FIG.

図４には、本発明に基づくかみそりヘッドの運転中の図３と異なった瞬時状態が示されている。この瞬時状態は、後続の刃３の第１刃先４が体毛９に接触した時点に相当している。この接触時に、後続の刃３の第１刃先４は体毛９を切り込み、これによって、体毛９は後続の刃３に固定される。この過程において後続の刃３の第１刃先４が皮膚８に直に接触するので、第１刃先４は皮膚８に非常に近くで体毛９を切り込む。後続の刃３と共に、体毛９は網刃２のリブ６まで運ばれ、そこで後続の刃３の第１刃先４によって、最初の接触個所で、従って、皮膚８に非常に近い個所で切断される。   FIG. 4 shows an instantaneous state different from FIG. 3 during operation of the razor head according to the invention. This instantaneous state corresponds to the time when the first cutting edge 4 of the subsequent blade 3 contacts the body hair 9. At the time of this contact, the first cutting edge 4 of the subsequent blade 3 cuts the body hair 9, whereby the body hair 9 is fixed to the subsequent blade 3. In this process, the first cutting edge 4 of the subsequent blade 3 directly contacts the skin 8, so that the first cutting edge 4 cuts the hair 9 very close to the skin 8. Together with the subsequent blade 3, the hair 9 is carried to the rib 6 of the mesh blade 2, where it is cut by the first cutting edge 4 of the subsequent blade 3 at the first contact point and therefore very close to the skin 8. .

従って、第１刃先４で得られる第２刃先５に比べて非常に短い切断長は、第１刃先４が体毛９の最初の接触時に体毛９を切り込み、従って体毛９に沿ってすべらなくなることによって実現される。また、第１刃先４の鋭角な形成は、体毛９を切断するために小さな切断力しか必要とせず、体毛９における応力領域がかなり局部化される。これによって、既に予め切り詰められた体毛９が効果的に再度切り詰められる。   Therefore, a very short cutting length as compared with the second cutting edge 5 obtained with the first cutting edge 4 is that the first cutting edge 4 cuts the body hair 9 at the first contact of the body hair 9 and therefore does not slide along the body hair 9. Realized. Further, the acute formation of the first cutting edge 4 requires only a small cutting force to cut the body hair 9, and the stress region in the body hair 9 is considerably localized. As a result, the hair 9 already trimmed in advance is effectively trimmed again.

これに対して、第２刃先５による切断過程は、大きな切断力を必要とし、体毛９に大きな応力領域を生じさせる。これは、既に予め切り詰められた体毛９において、網刃２のリブ６と刃３の第２刃先５との間に挟まれた体毛９が切断されずに網刃２の体毛導入孔７から跳ね出させる。この場合、短い最終長への切断は行われない。しかし、既に予め切り詰められた体毛９が確実に第１刃先４によって切断されるので、第１刃先４と第２刃先５との組合せから、非常に完璧で皮膚に優しいひげそりが生ずる。   On the other hand, the cutting process by the second cutting edge 5 requires a large cutting force and causes a large stress region in the body hair 9. This is because, in the hair 9 already cut in advance, the hair 9 sandwiched between the rib 6 of the mesh blade 2 and the second cutting edge 5 of the blade 3 is not cut and jumps from the hair introduction hole 7 of the mesh blade 2. Let it come out. In this case, cutting to a short final length is not performed. However, since the hair 9 that has already been trimmed in advance is surely cut by the first cutting edge 4, the combination of the first cutting edge 4 and the second cutting edge 5 produces a very perfect and gentle shave.

本発明に基づいて形成された電気かみそりのかみそりヘッドの実施例における幾つかの構成要素の概略断面図。FIG. 3 is a schematic cross-sectional view of several components in an embodiment of an electric razor razor head formed in accordance with the present invention. 図１に示された刃の外側輪郭の拡大図。FIG. 2 is an enlarged view of the outer contour of the blade shown in FIG. 1. 本発明に基づくかみそりヘッドの運転中の瞬時状態の断面図。Sectional drawing of the instantaneous state during driving | operation of the razor head based on this invention. 本発明に基づくかみそりヘッドの運転中の図３と異なった瞬時状態の断面図。Fig. 4 is a cross-sectional view of an instantaneous state different from Fig. 3 during operation of a razor head according to the present invention.

Claims (11)

複数の刃（３）を備え、隣り合う２つの刃（３）が対の刃（３）を形成するとともに、更に隣り合う複数の対の刃（３）が形成され、
各対の刃（３）の互いに向かい合う側に、体毛（９）を切断するための第１刃先（４）が形成されている、振動駆動式かみそりヘッドの内刃体において、
各対の刃（３）の互いに反対の側に、第１刃先（４）より弱い切断作用を有した、体毛（９）を切断するための第２刃先（５）が形成されている、ことを特徴とする内刃体。 A plurality of blades (3) are provided, and two adjacent blades (3) form a pair of blades (3), and a plurality of adjacent blades (3) are further formed,
In the inner blade body of the vibration-driven razor head in which the first blade edge (4) for cutting the hair (9) is formed on the opposite sides of each pair of blades (3),
A second cutting edge (5) for cutting body hair (9) having a cutting action weaker than that of the first cutting edge (4) is formed on the opposite side of each pair of blades (3). An inner blade body characterized by 第１刃先（４）を形成する２面間の第１切刃角（α）が、第２刃先（５）の第２切刃角（β）より小さくなっている、ことを特徴とする請求項１記載の内刃体。  The first cutting edge angle (α) between the two surfaces forming the first cutting edge (4) is smaller than the second cutting edge angle (β) of the second cutting edge (5). Item 2. The inner blade body according to Item 1. 第１切刃角（α）が鋭角、好適には、約４５°である、ことを特徴とする請求項２記載の内刃体。  The inner cutter according to claim 2, characterized in that the first cutting edge angle (α) is an acute angle, preferably about 45 °. 第２切刃角（β）が約９０°である、ことを特徴とする請求項２又は３に記載の内刃体。  The inner cutter body according to claim 2 or 3, wherein the second cutting edge angle (β) is about 90 °. 第１刃先（４）および／又は第２刃先（５）が最大５μｍの刃先半径を有している、ことを特徴とする請求項１ないし４のいずれか１つに記載の内刃体。  5. Inner blade body according to claim 1, wherein the first cutting edge and / or the second cutting edge have a cutting edge radius of at most 5 μm. 互いに隣り合う第１刃先（４）同士の間の刃先間隔（Ａ１）が、互いに隣り合う第２刃先（５）同士の間の刃先間隔（Ａ２）より小さい、ことを特徴とする請求項１ないし５のいずれか１つに記載の内刃体。  The cutting edge interval (A1) between the first cutting edges (4) adjacent to each other is smaller than the cutting edge interval (A2) between the second cutting edges (5) adjacent to each other. The inner blade body according to any one of 5. 互いに隣り合う第１刃先（４）同士の間の刃先間隔（Ａ１）が約２５０μｍである、ことを特徴とする請求項１ないし６のいずれか１つに記載の内刃体。  The inner blade body according to any one of claims 1 to 6, wherein a blade edge interval (A1) between the first blade edges (4) adjacent to each other is about 250 µm. 互いに隣り合う第２刃先（５）同士の間の刃先間隔（Ａ２）が約８００μｍである、ことを特徴とする請求項１ないし７のいずれか１つに記載の内刃体。  The inner blade body according to any one of claims 1 to 7, wherein a blade edge interval (A2) between the second blade edges (5) adjacent to each other is about 800 µm. 請求項１ないし８のいずれか１つに記載の内刃体（１）を備えている、ことを特徴とする振動駆動式かみそりヘッド。  A vibration-driven razor head comprising the inner blade (1) according to any one of claims 1 to 8. 複数の体毛導入孔（７）を有する外刃体（２）を更に備え、内刃体（１）の運動方向に対して平行な方向における体毛導入孔（７）の最大寸法が、内刃体（１）の互いに隣り合う第１刃先（４）同士の間の刃先間隔（Ａ１）より大きいことを特徴とする請求項９記載のかみそりヘッド。 An outer blade body (2) having a plurality of body hair introduction holes (7) is further provided, and the maximum dimension of the body hair introduction hole (7) in the direction parallel to the movement direction of the inner blade body (1) is (1) of the first cutting edge (4) adjacent to each other razor head according to claim 9, wherein from size Ikoto edge spacing (A1) between each other. 内刃体（１）の運動方向に対して平行な方向における体毛導入孔（７）の最大寸法が、内刃体（１）の互いに隣り合う第２刃先（５）同士の間の刃先間隔（Ａ２）より小さい、ことを特徴とする請求項１０記載のかみそりヘッド。The maximum dimension of the hair introduction hole (7) in the direction parallel to the direction of movement of the inner blade (1) is the distance between the blade edges (2) between the adjacent second blade edges (5) of the inner blade (1). The razor head according to claim 10, which is smaller than A2).
JP2006538739A 2003-11-12 2004-11-04 Inner blade body of vibration driven razor head Expired - Fee Related JP4777253B2 (en)

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