JP2001511682A

JP2001511682A - Safety razor

Info

Publication number: JP2001511682A
Application number: JP53588198A
Authority: JP
Inventors: ブライアン、オールドロイド
Original assignee: ザ、ジレット、カンパニー
Priority date: 1997-02-18
Filing date: 1998-02-13
Publication date: 2001-08-14
Anticipated expiration: 2018-02-13
Also published as: PL186889B1; EP1007297A1; CA2278806A1; SK285265B6; IL131187A0; EP1007297B1; AR011824A1; DE69807495T2; ID22918A; YU38899A; KR100539658B1; HK1025071A1; DE69807495D1; JP4201842B2; CA2278806C; AU6276498A; WO1998035795A1; ES2182269T3; KR20000071111A; BR9807229A

Abstract

(57)【要約】安全かみそり刃ユニットはほぼ並列の刃先を提供する複数枚の刃（４）を有する。刃はガードとキャップとの間に配設される。刃は独立に動き、支持体（５）により支持される。少なくとも一つの支持体は皮膚接触部分を提供するため組合わされた刃の前方に突出する離間した部分（１２）を備える。 (57) [Summary] The safety razor blade unit has a plurality of blades (4) that provide substantially parallel cutting edges. The blade is disposed between the guard and the cap. The blades move independently and are supported by a support (5). The at least one support comprises spaced forwardly protruding portions (12) of the associated blades to provide a skin contacting portion.

Description

【発明の詳細な説明】安全かみそり本発明は、安全かみそりに係り、特に刃ユニットが取り付けられる柄によりシェービングされる皮膚の面に沿って動く切り刃縁を有する少なくとも一枚の刃を備える安全かみそり刃ユニットに関する。刃ユニットは、必要なときはユニットを新しい刃ユニットに取り替えできるように柄に取り付けられている。置換できる刃ユニットは通常カートリッジと言われている。また刃ユニットは、一枚又は複数枚の刃が鈍くなったときカミソリ全体を廃棄する意図で柄に永久に取り付けられる。かみそりの刃ユニットは、全般的に刃の前後で皮膚とそれぞれ接触するガード又はキャップ面を有しており、この面はいわゆるシェービング形状を達成するという重要な役割、即ちシェービング中皮膚に対する刃の方向付け及び位置を決めるパラメータという重要な役割をしている。従来安全かみそりに、刃先の前で皮膚と接触する櫛状の構体を具備する提案があり、この構体はある場合にはガード面に配設され又はガード面を構成するようになっており、一方他の配置では一対の縦に並んだ刃間のスペーサに櫛構体を包括するようになっていた。櫛構体は一方で安全と快適という問題のバランスを保ち、他方で緻密なシェービングを成すために提供された。櫛構体の従来例として米国特許第3,004,337号、4,272,885号、5,359,774号に記載されており、それらには皮膚と刃先との間の接触を減少することで改良した安全と快適さが得られることが示されている。櫛構体を有する従来の刃ユニットは、固定刃を備えており、シェービング形状を変更するため、シェービング中遭遇する力の下で刃が動くように取り付けられている刃ユニットに適応するために簡単に対応することは困難であった。本発明によれば、安全かみそり刃ユニットはガードとキャップ面を有するフレームと、該ガードとキャップ面間のフレームに取り付けられたほぼ並行の刃先を有する複数本の刃とを備え、該刃はシェービング中に刃に懸かる力によりシェービング形状を変更するためフレーム内に独立して動くように各刃支持体に支持され、少なくとも刃支持体は、刃支持体に支持された刃に沿って離間した素子に強固に接続され且つ刃先の前方に突出し、該素子は刃の直前で且つ刃先にほぼ正接で皮膚と接触するための皮膚接触部分を有している。従来の櫛構体を有する刃ユニットにおいて、安全性並びに快適性を改善する試みがあったが最高の緻密性が得られなかった。本発明による安全かみそり刃ユニットの可とする実施形態では、優れた緻密性が得られるだけでなく、安全性並びに快適性を高める利点も更に備えている。好ましい実施形態では前方に突出する素子は、その側面が0.10乃至0.30mmの範囲の距離、刃先から離間した点に直線上に延びる上面部分を有している。突出する素子は、刃支持体に強固に固着された部材に形成することもできるが、刃支持体と一体で有ることが好ましい。何れの場合も素子は可動の刃を有する刃ユニットに簡易に且つ都合良く組み込むことができ、素子はシェービング中に生ずる刃の移動にも拘わらず効果的に保たれる。更に素子は全ての場合刃先に密接する皮膚接触面を有する。平坦又はアーチ状の上面部分が刃先とほぼ共通面に有ることによって、素子は皮膚面を摺動するときスキー又はランナーと同様な様子で作動する傾向にあり、それにより刃が、刃先の長手方向に変位する傾向を阻止すると同時に刃を皮膚と効果的に接触するよう案内できる。好ましい構造では突出素子は平坦な側部と、該平坦な側部に延び湾曲状の又は次第に広がる横腹面と滑らかに合体する上面部分の横方向縁を具備する。かかる特徴は素子の有効性に寄与すると共に快適性を保持できる。素子の適切な幅は0.1乃至0.3mmの範囲であり、上部皮膚接触面部分の幅は0.1m m以下であり、素子が毛を皮膚面に対し平らに寝かせる傾向を回避できる。素子は2mm以下例えば0.5乃至1.5mmの範囲のピッチで配設されることが好ましく、ほぼ1.0mmのピッチが特に適切である。素子と皮膚面との間に穏和な最初の接触を得るため、その前端に円い鼻部を設けることもでき、この鼻部は上面部分に滑らかに導かれる。本発明の可とする実施形態の上述した又は他の特徴は、添付図面に基づいて以下詳述する。図１は安全かみそり刃ユニットの部分的斜視図である。図１Ａは図１の線Ａに沿う安全カミソリ刃ユニットの断面図である。図２は一枚の刃及びその支持体の一部を示す拡大斜視図である。図３は刃及びその支持体の端面図である。図４は刃支持体の一部の正面図である。図５は変形した刃支持体の斜視図である。図６は図５の刃支持体の素子の一部の拡大斜視図である。図７は図６の素子の平面図である。図８は図６の素子の平面図である。図９は図６の素子の側面図である。図１０は他のかみそりの刃及び支持組立体の斜視図である。図１１は図１０の組立体の一部を示す拡大斜視図である。図１２は図１０の組立体の展開した斜視図である。図１に示すように、安全かみそり刃ユニット即ちカートリッジは、ガード及びキャップ面が設けられ且つ長手方向のフィンを持ったエラストマー材料のストリップ２と潤滑剤のストリップ３がをそれぞれ取り付けられたモールドプラスチックフレーム１を備えている。ガードとキャップの間には３枚の並列の刃４があり、刃はガードとキャップの間にシリースに配設された前方を向く切り刃縁を備えている。各刃４は刃支持体５に固着され、刃支持体の端部はそれ自体周知であるようにばね（図示せず）の作用に対して且つシェービング中刃に加わる力の下でフレームに対して刃を移動できるようにフレームに連結されている。図２乃至４に詳細に示すように、各刃支持体５は全体的に直立のビーム部分１０を有し、その上端から前方上方に傾斜した刃プラットホーム１１が延び、その上面に例えばスポット溶接で刃４が固着されている。刃プラットホームから一様に離間し前方に突出して設けられた櫛素子１２は、刃先と垂直である。刃支持体上の櫛素子１２の形成は、その形状、位置及び寸法と共に本発明の重要な新規な特徴である。図示するように素子１２は、少なくとも刃先の前方に突出する区分に沿って側面は平坦であり、且つ素子は湾曲状の端部１５により側面に結合される平坦な上面部分１４を有する。上面部分１４の前方に位置する素子１２の先端は面部分１４に滑らかに導かれる円い鼻部１６を有する。素子１２の根部１７は、刃４の下面で縁の面に密接するため刃プラットホーム面よりより急峻に傾斜している上面を有するが、このことは必須要件ではなく、刃の下面と素子の間に大きな間隔があっても良い。上面部分１４の後部即ち尾端は刃先に近接しており、その間の間隙幅は、刃先から面部分１４の前方即ち先導端間での距離Ａ（図３）より数倍小さい。刃支持体の全ての素子の面部分１４は、正接の共通面即ち支持体を支持する刃先を含む面に置かれる。距離Ａは0.1mm乃至0.3mmの範囲、特に0. 15mm乃至0.2mmの範囲である。この平坦な横方向の面間の素子の幅は0.5mm乃至1. 5mmの範囲、例えば約1.0mmであり、素子は1.0mmピッチで配設される。刃支持体の突出素子１２を使用することにより、刃先に垂直な方向に皮膚の上を動かすため刃ユニットに影響を与える案内効果があり、素子は皮膚に同様な方法で働き即ち皮膚面上を摺動する。これにより向上された安全と快適さが得られる。同時に素子１２は皮膚面と刃の効果的な共同作用を生み爽快感という言葉のように優れたシェービングを得ることができる。図５乃至図９に、図１の安全かみそりユニットの一つ以上の刃の何れか一つに使用できる変形した刃支持体を示す。変形した刃支持体は図２乃至４に記載したものと同様であるが、前方突出素子２２の形状が異なる。平坦な上面部分を持つ代りに、素子は約0.07mmの曲率半径を持つアーチ状中央上面部分２４を有し、その横方向縁は平坦な側面に延びる次第に広がる横腹面２５に滑らかに合体される。図９の側面図で示すように、アーチ状上面部分の頂上は直線的に点２７まで延び、その点でこの面部分は円い鼻部２６と滑らかに合体する。素子２２の寸法は幅及びピッチに関する限り図２乃至４に記載したものと同じで、刃が刃支持体に取り付けられたとき、刃先から点２７の距離は前述のように距離Ａと同じである。図１０乃至１２に示す安全かみそりと刃支持体は、図１乃至９の実施形態のように刃支持体と一体化されている代わりに、刃先の前方に突出する素子３２が刃支持体３１に固着される分離した射出モールドプラスチック部材３０に形成されている。図示するようにモールド部材３０は、刃支持体に設けられた対応する穴３５を介して挿入される一体の杭即ちスタッド３４が長手方向に沿って離間して設けられ、スタッドの突出する自由端は例えば加熱加圧により変型され、刃支持体の後部に半径方向に拡大し、モールド体を刃支持体に緊着できる。モールド部材の上部縁は、刃３６を支持する部分の下側の刃支持体の外形に応ずるように形成され、素子３２はこの上部縁から前方に突出する。モールド部材３０の後端上面は、刃支持体３１と接触する二つの面を画定し、突出体が刃支持体と更には刃３６の切り刃縁と正確に配列することを支援する。突出体３２は図５乃至９で説明した刃支持体の素子２２と同様な形状並びに寸法を有しており、前述の実施形態に関して述べたように刃３６の鋭利な先に関して好ましく配設される。図１０乃至１２の刃及び支持体は図１の安全かみそりユニットの一つより以上の刃と支持体として使用できる。本発明の変形並びに変更は本発明の精神並びに請求の範囲内で成すことができ、しかしながら我々の意図としては添付請求の範囲のみにより制限される。DETAILED DESCRIPTION OF THE INVENTION Safety razor The present invention relates to a safety razor, and particularly to a handle to which a blade unit is attached. At least one blade having a cutting edge moving along the surface of the skin to be The present invention relates to a safety razor blade unit provided. Blade unit when necessary Is attached to the handle so that can be replaced with a new blade unit. Can be replaced The blade unit is usually called a cartridge. In addition, one blade unit or Permanently attached to the handle with the intention of discarding the entire razor when multiple blades become dull Can be Razor blade units generally contact the skin before and after the blade, respectively Has a guard or cap surface, which achieves the so-called shaving shape Important role, ie the orientation and position of the blade relative to the skin during shaving Plays an important role as a parameter that determines Conventionally, there has been a proposal to provide a comb-like structure that comes into contact with the skin in front of the blade in a safety razor. Yes, this structure is in some cases arranged on or forming a guard surface In other arrangements, the comb structure is wrapped in a spacer between a pair of vertically aligned blades. I was going to put it together. The comb structure, on the other hand, balances safety and comfort issues. On the other hand, it was provided to provide a fine shaving. As a conventional example of a comb structure U.S. Pat.Nos. 3,004,337, 4,272,885, 5,359,774 Provides improved safety and comfort by reducing contact between skin and cutting edge It has been shown. A conventional blade unit having a comb structure has a fixed blade and has a shaving shape. The blade is mounted to move under the forces encountered during shaving to change the It has been difficult to easily respond to adapt to the blade unit that is in use. According to the present invention, the safety razor blade unit has a guard having a guard and a cap surface. And a substantially parallel cutting edge attached to the frame between the guard and the cap surface. Having a plurality of blades, the blades being shaped by a force hung on the blades during shaving. Supported on each blade support to move independently within the frame to change the bing shape At least the blade support is strong against elements spaced along the blade supported by the blade support. Firmly connected and projecting forward of the cutting edge, the element is immediately tangent to and just before the cutting edge And has a skin contact portion for contacting the skin. A trial to improve safety and comfort in a blade unit with a conventional comb structure Despite the appearance, the highest density could not be obtained. Safety razor blade unit according to the present invention In embodiments where the cost is acceptable, not only is it possible to obtain excellent compactness, but also It also has the advantage of increasing comfort. Projects forward in preferred embodiment The element has a straight line at a point whose side faces are separated from the cutting edge by a distance in the range of 0.10 to 0.30 mm. And an upper surface portion extending in the direction. The protruding element is firmly fixed to the blade support Although it can be formed in a member, it is preferable that it is integral with the blade support. Any In this case, the element can be easily and conveniently incorporated into a blade unit having a movable blade. As a result, the element is effectively kept in spite of the blade movement occurring during shaving. Furthermore, the element has in all cases a skin-contacting surface which is in close contact with the cutting edge. Flat or arched When the element slides on the skin surface, the upper surface is almost in common with the cutting edge. They tend to work in a manner similar to skis or runners, so that the blade To prevent the tendency of the blade to displace in the longitudinal direction while at the same time making the blade contact the skin effectively I can guide you. In a preferred construction, the protruding elements have flat sides and a curved or extending side. It has a lateral edge of the upper surface portion that smoothly merges with the flaring surface that gradually widens. Take The features contribute to the effectiveness of the element and can maintain comfort. The appropriate width of the element is in the range of 0.1 to 0.3 mm, the width of the upper skin contact surface is 0.1 m m or less to avoid the tendency of the element to lay the hair flat against the skin surface. The elements are preferably arranged at a pitch of 2 mm or less, for example in the range of 0.5 to 1.5 mm. A pitch of approximately 1.0 mm is particularly suitable. A rounded nose is provided at the front end of the element to provide a gentle initial contact between the element and the skin surface. The nose can be smoothly guided to the upper surface. The above and other features of the embodiments of the present invention will now be described with reference to the accompanying drawings. It will be described in detail below. FIG. 1 is a partial perspective view of the safety razor blade unit. FIG. 1A is a cross-sectional view of the safety razor blade unit along line A in FIG. FIG. 2 is an enlarged perspective view showing one blade and a part of its support. FIG. 3 is an end view of the blade and its support. FIG. 4 is a front view of a part of the blade support. FIG. 5 is a perspective view of the deformed blade support. FIG. 6 is an enlarged perspective view of a part of the element of the blade support of FIG. FIG. 7 is a plan view of the device of FIG. FIG. 8 is a plan view of the device of FIG. FIG. 9 is a side view of the device of FIG. FIG. 10 is a perspective view of another razor blade and support assembly. FIG. 11 is an enlarged perspective view showing a part of the assembly of FIG. FIG. 12 is an exploded perspective view of the assembly of FIG. As shown in FIG. 1, the safety razor blade unit or cartridge comprises a guard and A strip of elastomeric material provided with a cap surface and having longitudinal fins Mold plastic with a strip 2 and a lubricant strip 3 respectively attached. Frame 1 is provided. There are three parallel blades 4 between the guard and the cap The blade has a forward facing cutting edge located on the series between the guard and the cap hand I have. Each blade 4 is fixed to a blade support 5, the ends of which are well known per se. Against the action of a spring (not shown) and under the force applied to the blade during shaving. The blade is connected to the frame so that the blade can be moved with respect to the frame. As shown in detail in FIGS. 2 to 4, each blade support 5 has a generally upright beam portion 1. 0, and a blade platform 11 inclined forward and upward from the upper end thereof, The blade 4 is fixed to the upper surface by, for example, spot welding. Uniform from blade platform The comb element 12 which is provided so as to be spaced apart from and protruding forward is perpendicular to the cutting edge. Blade support The formation of the upper comb element 12, together with its shape, position and dimensions, is an important novelty of the present invention. It is a feature. As shown, the element 12 has at least a section projecting forward of the cutting edge. Along the sides are flat and the elements are joined to the sides by curved ends 15 It has a flat upper surface portion 14. Tip of element 12 located in front of upper surface portion 14 Has a round nose 16 that is smoothly guided to the face portion 14. The root 17 of the element 12 , The lower surface of the blade 4 is more steeply inclined than the blade platform surface to be in close contact with the edge surface. Surface, but this is not a requirement and there is a large gap between the lower surface of the blade and the element. There may be gaps. The rear or tail end of the upper surface portion 14 is close to the cutting edge, The gap width between them is the distance A from the cutting edge to the front of the surface portion 14, that is, the leading end (FIG. 3). Several times smaller. The face portion 14 of all the elements of the blade support has a tangent common surface or support. It is placed on a surface that contains the cutting edge that supports the body. The distance A is in the range of 0.1 mm to 0.3 mm, especially 0.1 mm. It is in the range of 15 mm to 0.2 mm. The width of the element between the flat lateral surfaces is 0.5 mm to 1. The range is 5 mm, for example, about 1.0 mm, and the elements are arranged at a 1.0 mm pitch. By using the protruding element 12 of the blade support, it is possible to apply Has a guiding effect that affects the blade unit, and the element is It works in a manner that it slides on the skin surface. This results in improved safety and comfort You. At the same time, the element 12 creates an effective synergy between the skin surface and the blade, Excellent shaving can be obtained. FIGS. 5 through 9 show one or more blades of the safety razor unit of FIG. 3 shows a modified blade support that can be used. The deformed blade supports are described in FIGS. It is similar to the one described above, but the shape of the forward projecting element 22 is different. Has a flat top Instead, the element has an arcuate central top surface portion 24 with a radius of curvature of about 0.07 mm, and Lateral edges of the are smoothly merged with the flaring surface 25 which extends to the flat side . As shown in the side view of FIG. 9, the top of the arched upper surface portion extends linearly to point 27. At this point, the surface smoothly merges with the round nose 26. The dimensions of the element 22 As far as the width and pitch are concerned, they are the same as those described in FIGS. When installed, the distance of the point 27 from the cutting edge is the same as the distance A as described above. . The safety razor and blade support shown in FIGS. 10-12 are similar to the embodiments of FIGS. 1-9. Instead of being integrated with the blade support, an element 32 projecting forward of the blade edge is provided. Formed on a separate injection molded plastic member 30 secured to a support 31 ing. As shown, the mold member 30 has a corresponding hole in the blade support. An integral stake or stud 34 inserted through 35 is spaced longitudinally The stud protruding free end is deformed by, for example, heating and pressing, and the blade support A radial expansion at the rear of the body allows the mold body to be secured to the blade support. Mold part The upper edge of the material is shaped to conform to the profile of the lower blade support below the portion supporting the blade 36. The element 32 projects forward from this upper edge. Above the rear end of the mold member 30 The surface defines two surfaces that come into contact with the blade support 31, the protrusions being the blade support and even the blade support. Helps align precisely with 36 cutting edges. The protrusion 32 is described in FIGS. It has the same shape and dimensions as the element 22 of the blade support described, and It is preferably disposed with respect to the sharp point of the blade 36 as described with respect to the embodiment. FIG. 1 to 12 blades and supports are supported by more than one blade of the safety razor unit of FIG. Can be used as a carrier. Modifications and variations of the present invention can be made within the spirit of the present invention and the scope of the claims. , However, our intention is limited only by the appended claims.

───────────────────────────────────────────────────── フロントページの続き (81)指定国ＥＰ(ＡＴ，ＢＥ，ＣＨ，ＤＥ，ＤＫ，ＥＳ，ＦＩ，ＦＲ，ＧＢ，ＧＲ，ＩＥ，ＩＴ，ＬＵ，ＭＣ，ＮＬ，ＰＴ，ＳＥ)，ＯＡ(ＢＦ，ＢＪ，ＣＦ，ＣＧ，ＣＩ，ＣＭ，ＧＡ，ＧＮ，ＭＬ，ＭＲ，ＮＥ，ＳＮ，ＴＤ，ＴＧ)，ＡＰ(ＧＨ，ＧＭ，ＫＥ，ＬＳ，ＭＷ，ＳＤ，ＳＺ，ＵＧ，ＺＷ)，ＥＡ(ＡＭ，ＡＺ，ＢＹ，ＫＧ，ＫＺ，ＭＤ，ＲＵ，ＴＪ，ＴＭ)，ＡＬ，ＡＭ，ＡＴ，ＡＵ，ＡＺ，ＢＡ，ＢＢ，ＢＧ，ＢＲ，ＢＹ，ＣＡ，ＣＨ，ＣＮ，ＣＵ，ＣＺ，ＤＥ，ＤＫ，ＥＥ，ＥＳ，ＦＩ，ＧＢ，ＧＥ，ＧＨ，ＧＭ，ＧＷ，ＨＵ，ＩＤ，ＩＬ，ＩＳ，ＪＰ，ＫＥ，ＫＧ，ＫＰ，ＫＲ，ＫＺ，ＬＣ，ＬＫ，ＬＲ，ＬＳ，ＬＴ，ＬＵ，ＬＶ，ＭＤ，ＭＧ，ＭＫ，ＭＮ，ＭＷ，ＭＸ，ＮＯ，ＮＺ，ＰＬ，ＰＴ，ＲＯ，ＲＵ，ＳＤ，ＳＥ，ＳＧ，ＳＩ，ＳＫ，ＳＬ，ＴＪ，ＴＭ，ＴＲ，ＴＴ，ＵＡ，ＵＧ，ＵＳ，ＵＺ，ＶＮ，ＹＵ，ＺＷ────────────────────────────────────────────────── ─── Continuation of front page (81) Designated countries EP (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, L U, MC, NL, PT, SE), OA (BF, BJ, CF) , CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG), AP (GH, GM, KE, LS, M W, SD, SZ, UG, ZW), EA (AM, AZ, BY) , KG, KZ, MD, RU, TJ, TM), AL, AM , AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, E S, FI, GB, GE, GH, GM, GW, HU, ID , IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, M G, MK, MN, MW, MX, NO, NZ, PL, PT , RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, V N, YU, ZW

Claims

[Claims] 1. A frame having a guard and a cap surface, and between the guard and the cap surface A plurality of blades having substantially parallel blade edges mounted on a frame, and supporting the blades A blade support, and a skin-contacting portion that comes into contact with the skin immediately before the blade and substantially tangent to the blade edge The blade has a shape according to a force applied to the blade during shaving. Each blade support that can move independently within the frame to change the waving shape And at least one of the blade supports is along a blade supported by the blade support. Safety bit that is firmly fixed to the element and is protruded forward of the cutting edge. Sledge blade unit. 2. The safety device according to claim 1, wherein the forwardly projecting element is integral with the blade support. Razor blade unit. 3. The element has a range of 0.10 to 0.30 mm at a point linearly spaced from the cutting edge on the side surface. 3. A safety razor blade unit according to claim 1, wherein said safety razor blade unit has an upper surface portion extending a distance (A) from the upper surface. To 4. The length of the straight surface portion is several times the distance between the surface portion and the cutting edge. 3. The safety razor blade unit according to 3. 5. The upper surface portion is smoothly engaged with the round nose of the element at the front end. A safety razor blade unit according to any one of claims 1 to 4. 6. The device has flat sides and the lateral edges of the top portion are flat sides 6. The method as claimed in claim 1, wherein the surface is smoothly merged with the extending curved surface or the gradually expanding lateral abdominal surface. The safety razor blade unit described in Crab. 7. 7. The safety device according to claim 1, wherein said element has a width of 0.1 to 0.3 mm. All razor blade units. 8. The safety razor blade according to claim 7, wherein the width of the upper surface portion is 0.15 mm or less. knit. 9. 2. The device according to claim 1, wherein the elements are arranged in a longitudinal direction of the blade at a pitch of 2 mm or less. A safety razor blade unit according to any one of claims 8 to 10. 10. The longitudinal pitch of the blades of the element is in the range of 0.5 to 1.5 mm. 9. The safety razor blade unit according to 9. 11. 11. The safety razor blade according to claim 10, wherein said pitch is approximately equal to 1.0 mm. knit. 12. Behind the skin contacting part, the element is tilted according to the plane of the blade at the underside of the blade. 12. A safety as claimed in any one of the preceding claims, comprising a root having an oblique upper surface portion. Razor blade unit.