WO2013021514A1 - Rasoir rotatif, procédé de fabrication pour la lame extérieure de ce rasoir, et lame extérieure - Google Patents

Rasoir rotatif, procédé de fabrication pour la lame extérieure de ce rasoir, et lame extérieure Download PDF

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Publication number
WO2013021514A1
WO2013021514A1 PCT/JP2011/077198 JP2011077198W WO2013021514A1 WO 2013021514 A1 WO2013021514 A1 WO 2013021514A1 JP 2011077198 W JP2011077198 W JP 2011077198W WO 2013021514 A1 WO2013021514 A1 WO 2013021514A1
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WO
WIPO (PCT)
Prior art keywords
blade
outer blade
shaving
rotary
rotary shaver
Prior art date
Application number
PCT/JP2011/077198
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English (en)
Japanese (ja)
Inventor
三村良幸
Original Assignee
株式会社泉精器製作所
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Filing date
Publication date
Application filed by 株式会社泉精器製作所 filed Critical 株式会社泉精器製作所
Publication of WO2013021514A1 publication Critical patent/WO2013021514A1/fr

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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
    • B26B19/14—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor
    • B26B19/143—Details of outer cutters
    • 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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3893—Manufacturing of shavers or clippers or components thereof

Definitions

  • a large number of eyebrow introduction holes are formed in the annularly-raised shaving surface of the outer blade, and the eyebrows entering this eyelid introduction hole are rotated in contact with the annular shaving groove on the lower surface of the outer blade.
  • the present invention relates to a rotary shaver for cutting with a blade, a method of manufacturing an outer blade used therefor, and an outer blade manufactured by this method.
  • Patent Document 1 For the outer blade having a slit, an annular dividing groove is provided between a plurality of annular (ring-like) shaving surfaces, and the slit extending to the inner and outer radius shaving surfaces including this dividing groove is What is provided is disclosed in Patent Document 1. Since the slits connect the slits of the adjacent shaving surface with the slits of the dividing grooves, it is difficult for the cutting grooves and fat secreted from the skin to be accumulated in the dividing grooves. Patent Document 1 also discloses that the strength of the shaving surface is secured by leaving the connecting portion at a part of the bottom of the dividing groove and the like.
  • Patent Documents 1 and 2 disclose a method of manufacturing such an outer blade. That is, a rotary cutter (or rotary grindstone) is applied to the outer shaving surface to process a slit, and an inner dividing groove of the shaving surface and the shaving surface are applied to the rotary cutter to sequentially form slits in these It is. Such processing can be performed by changing the position of the rotation center of the rotary cutter. The number of slits is therefore usually greater with the outer shaving surface. Because the radius of the outer shaving surface is larger than the inner shaving surface, the area of the shaving surface is increased.
  • the outer blade having these slits is also referred to as a rough cutting blade or a rough cutting rotary blade because it is easy to introduce a long wrinkle or a wrinkle with a wrinkle into the slit.
  • the skin easily penetrates deep into the slit in the longitudinal direction, and when the outer blade is brought into strong contact with the skin, the skin approaches the inner blade, leaving a tingling sensation after shaving and a bad shave taste There is a problem of For this reason, there is also a slit in which the thickness of the shaving surface is increased to prevent the skin from approaching the inner blade (Patent Document 6).
  • Patent documents 3, 4, and 5 show that a slit and a small hole are divided into the same annular shaving surface.
  • Patent Document 3 describes thickening the slit area to make it difficult for the inner blade to contact the skin even if the skin enters the slit, while thinning the area of the small hole to finish shaving. That is, the area of the small hole is a finishing rotary blade.
  • Patent Documents 3, 4 and 5 do not describe a method of manufacturing the outer blade thus having the slit and small hole areas formed in the common annular shaving surface, the actual manufacture is considerably complicated. I think it will be.
  • the conventional outer cutter is usually machined by ECM (electrolytic machining method), electric discharge machining method or the like.
  • the outer blade is formed by pressing a metal plate (thin metal plate, blank) sufficiently thicker than the thickness of the shaving surface to a predetermined outer blade shape (circular substantially inverted plate shape), and then the inner blade runs on the inner surface Grind the moving surface (annular shaving groove, track). After this is hardened, slits and small holes are machined by ECM (electrolytic machining method) or electric discharge machining.
  • FIG. 11 is a plan view showing an example of a conventional outer blade having such a slit
  • FIG. 13 is a cross-sectional view along the line XIII-XIII
  • FIG. 5 (B) is an enlarged side cross-sectional view thereof
  • FIG. It is.
  • the conventional outer cutter 10 shown here is manufactured conventionally by the applicant, and as shown in FIG. 13, for example, a metal plate of 0.5 to 0.6 mm (metal thick plate, blank) Is deep drawn by a press (steps S100 and S102 in FIG.
  • step S104 After quenching (step S106), the slit 16 (16a, 16b) with a width of 0.26 to 0.3 mm is cut into a linear shape by a rotary cutter (step S108), and burrs generated by this cutting are removed It is removing (step S110).
  • a metal plate of 0.5 to 0.6 mm means that the machined surface (shaved surface 14) is fixed when grinding the razor surface (step S104) or when processing the slit 16 with a rotary cutter (step S108) This is because the strength needs to be high.
  • the die and punch drawing types are complicated. become. In order to avoid interference between the jig and the rotary cutter, it is necessary to make the distance between the flange portion 18 and the shaving surface 14 sufficiently large.
  • a material which can be deep drawn for example, a soft one having a Vickers hardness (HV) of 200 or less or a material having a large elongation.
  • HV Vickers hardness
  • deburring processing that accompanies slit processing is also required (step 110).
  • various methods are considered for manufacture of an outer blade.
  • processing of the outer surface and the inner surface of the shaving surface is performed by lace processing (cutting, grinding processing) or electric discharge processing, and processing of the slit is ECM processing (electrolytic processing, electro- Although it is conceivable to use chemical machining, electric discharge machining, etc., there is a problem that these machining steps are complicated and inefficient.
  • the present invention has been made in view of these circumstances, and there is no need to deep-draw the metal plate, and there is no need to use special drawing methods or complicated processing methods such as cutting, ECM, electric discharge processing etc.
  • Productivity It is possible to significantly improve the shape of the slit and to increase the degree of freedom in shaving surface design without being limited to a linear processing shape, and to provide a rotary shaver that is also suitable for weight reduction.
  • the purpose of Another object of the present invention is to provide a method of manufacturing an outer blade used for this. Furthermore, it is a third object to provide an outer cutter manufactured by this method.
  • the first object is to rotate the outer blade having a large number of eyebrow introduction holes formed in the toroidal-raised shaving surface, and the inner blade that contacts and rotates the annular shaving groove on the lower surface of the outer blade.
  • the rotary shaver is provided with a blade, and the inner blade is cut by an inner blade into the outer edge of the outer blade, wherein the outer blade is formed of a thin metal plate into which the thin plate introduction hole is machined. This is achieved by a rotary shaver characterized in that it is molded into a disk-like outer blade shape.
  • a second object is a method of manufacturing an outer blade used in a rotary shaver according to claim 1, a) machining a large number of the weir introduction holes penetrating the shaving surface into a flat sheet metal sheet; b) processing the sheet metal into a disk-like outer cutter shape by drawing; According to another aspect of the present invention, there is provided a method of manufacturing an outer blade of a rotary shaver characterized by the following.
  • a third object is to form a large number of wedge introduction holes in at least a part of a toroidally raised shaving surface, and to rotate in contact with the toroidal shaving groove on the lower surface of the outer blade.
  • the wedge introduction hole is achieved by the outer blade of the rotary shaver which is formed into a disk-like outer blade shape by drawing of a stamped metal sheet.
  • the shaving surface When machining a thin shaving surface, it is necessary to use a thick material to ensure material strength, and when using a thick material, the shaving surface should be thinned after slitting or small holes.
  • the slits It is easy to process small holes, and it is not necessary to perform heat treatment before this processing, and productivity can be greatly improved. For example, it can process efficiently by press punching and etching.
  • FIG. 5 is a view showing the manufacturing process of the outer cutter according to one embodiment of the present invention.
  • Top view of sheet metal showing another embodiment of the slit
  • Top view of outer cutter according to still another embodiment of the present invention The perspective view which shows the Example which integrally molded the outer blade and the resin ring Side cross-sectional view of the embodiment of FIG.
  • Top view of conventional outer cutter The XIII-XIII line sectional view in FIG. 12 Diagram showing the manufacturing process of the conventional outer cutter
  • the chewing introduction hole may be a large number of slits extending to the inner and outer circumferential sides of the shaving surface, and the shaving surface on which the slits are formed may form a rough shaving rotary blade. Further, the chewing introduction hole may be a large number of small holes formed in at least a part of the shaving surface, and the shaving surface on which the small holes are formed may form a finishing rotary blade.
  • the annular shaving surface forming the slit and the annular shaving surface forming the small hole can be divided into separate annular shaving surfaces, for example, a plurality of shaving surfaces are provided concentrically, and the rough shaving blade of the slit The shaving blade on the small hole can be made into the shaving surface on the inner circumferential side. Further, a partial area of the common annular shaving surface may be a rough shaving blade of a slit, and the remaining area may be a finishing blade of a small hole.
  • the thin metal sheet can be formed by press punching the slit so that the thickness does not exceed the width of the slit.
  • the sheet metal may have a thickness not exceeding the width or diameter of the small holes, and the small holes may be formed by press punching. In these cases, the wedge introduction hole can be formed extremely efficiently by press punching, and the manufacturing efficiency is remarkably improved.
  • finishing rotary blade in which a small diameter hole introduction hole is formed in a common outer blade case and the rough shaving rotary blade in which a slit is formed.
  • a finishing rotary blade is disposed on the near side (front side of the main body) of the user, and a rough cutting rotary blade is disposed on the side far from the user (back side of the main body)
  • Each blade can be distributed back and forth.
  • the finishing rotary blade When the finishing rotary blade is placed on the front side, when the outer blade case is placed on the skin surface and slid vertically, the contact angle of the outer blade to the skin is the user's finishing blade, that is, the finishing blade It can be adjusted by inclining it with the fulcrum as a fulcrum, in which case there is no risk of damaging the skin even if the contact pressure of the finishing blade is increased.
  • the outer blade manufacturing method of the present invention after processing a large number of punch-introducing holes penetrating the shaving surface into a flat metal plate, it is processed into a disk-like outer blade shape by drawing.
  • the manufacturing process is much simpler than the conventional method.
  • the thin metal sheet used in the step a) may be made of a material having a large elongation corresponding to the drawing at the time of drawing as a thickness not exceeding the width of the crucible introduction hole.
  • a material capable of elongation of 10% or more is suitable, although it depends on the amount of reduction (the reduction ratio or the reduction ratio).
  • step b) at least the outer periphery can be shallow drawn using a conical die. That is, the angle between the shaving surface and the outer peripheral surface can be larger than 90 degrees (right angle), for example, about 100 degrees or 100 degrees or more. If processing can be performed by such shallow drawing, processing defects are less likely to occur in the material during press forming, and processing yield is improved.
  • the material plate placed on the die is punched by using a punch.
  • a large circumferential compression pressure is applied near the outer periphery of the material plate. For this reason, wrinkles are easily generated near the outer periphery.
  • the aperture is made shallow, this haze will not easily occur.
  • step a when processing the sheet metal in step a), a hole is made in the center, and in step b), if a hole widening process is performed in which drawing is performed so as to widen the hole, wrinkles are further increased. It is hard to occur and smooth draw molding becomes possible. That is, as described above, in deep drawing, since drawing is mainly performed by drawing in material from the die surface (flange portion), wrinkles are easily generated in the drawn surface, and for this reason, a drawing die for pressing the flange part is required. According to the spreading process, the material is formed mainly by the outflow of the material from the bottom of the punch, and it is bulged.
  • the thin metal plate one having a hardness of HV 400 or more can be used, and in this case, it is not always necessary to perform heat treatment after the processing of the outer blade, thereby improving the productivity.
  • heat treatment may be performed after the outer blade processing, in which case the hardness of the outer blade is significantly increased, and the durability is improved.
  • Hardness having a hardness of HV400 or less (for example, around HV200 or less) can be used. In this case, the drawability is improved, but in order to increase the hardness, heat treatment is preferably performed.
  • step a press punching is suitable, and in this case, the productivity is significantly improved.
  • the slit can be processed by etching.
  • the slit may be processed by laser processing.
  • the slitting process of step a) may be performed by press punching, and steps a) and b) may be performed stepwise by the same drawing die.
  • a drawing type a division type in which a portion to be drawn is divided can be used.
  • the slits may be formed in a linear shape, but the width can be changed or bent in a curved shape by appropriately setting the shape of a press die or the like.
  • the pattern of the etching resist to be formed on the surface of the thin metal plate may be appropriately determined.
  • the outer periphery of the outer blade can be inserted into a resin ring and molded. That is, since the outer blade is formed by processing a thin metal plate, the rigidity of the whole may be insufficient. Therefore, if the outer periphery is inserted into a resin ring and molded (insert molding), the strength of the outer blade, The rigidity can be improved, and the handling of the outer cutter can be facilitated. This effect is particularly effective when the outer peripheral edge of the outer cutter is made shallow.
  • the ring may be a skin protection ring, in which case the skin protection ring may prevent excessive penetration of the skin into the slit when the outer blade is pressed firmly against the skin.
  • FIG. 1 is a front view of a rotary shaver according to an embodiment of the present invention
  • FIG. 2 is a plan view of its outer blade
  • FIG. 3 is a sectional view taken along the line III-III in FIG.
  • FIG. 5A is a plan view
  • FIG. 5A is an enlarged cross-sectional view of an outer blade according to the present invention
  • FIG. 6 is a view showing a manufacturing process of the outer blade according to an embodiment of the present invention.
  • reference numeral 50 denotes a main body portion of the rotary shaver
  • 52 denotes a head portion thereof
  • the head portion 52 is disposed such that centers of three outer cutters 54 are positioned at apexes of an equilateral triangle.
  • An inner blade (not shown) slidably pressed on the lower surface of each outer blade 54 is accommodated in the head portion 52, and each inner blade is rotationally driven by an electric motor accommodated in the main body 50.
  • the outer blade 54 is obtained by processing a thin metal plate 56 having a thickness of 0.08 mm, as apparent from FIGS. 3 and 5A. That is, a metal sheet (blank) 56 having the same thickness as the shaving surface 58 (the outer shaving surface 58a and the inner shaving surface 58b) is prepared (FIG. 6, step S200) and processed. In the thin metal plate 56, as shown in FIG. 4, the radial slits 60 (60a, 60b) and the central hole 61 are press punched (step S202).
  • the width of the slit 60 is larger than the thickness of the thin metal plate 56, which is convenient for punching the slit 60. Since the thin metal plate 56 is sufficiently thin, the processing accuracy for punching the slit 60 is high, and the reliability is high. Therefore, the hardness of the thin metal plate 56 can be increased. Further, an annular portion 62 in which the slit 60 is not formed is left between the slits 60a and 60b.
  • the thin metal plate 56 is drawn into an outer blade 54 (step S204).
  • This squeezing is a shallow squeezing in which the depth of the formed portion is not so deep, and the overhanging process formed by the material flowing out from the bottom portion to the side wall around it, pre-piercing the bottom portion
  • This process includes an expanding process of forming the hole in such a manner as to expand the hole.
  • the annular portion 62 between the two shaving surfaces 58a and 58b is pressed in a groove shape to form an annular groove 64, and the outside of the outer shaving surface 58a is shown in FIG. 5 (A).
  • the tapered stop surface 66 has a gentle slope with respect to the external shaving surface 58a.
  • the inner peripheral side of the inner shaving surface 58b is drawn substantially vertically, this drawing is shallow and therefore does not become deep drawing.
  • An opening 61a in which the hole 61 is enlarged is formed in the inner drawn portion, and a cap (not shown) for pivotally supporting the center of the inner blade is fixed to the opening 61a.
  • the back surfaces of the shaving surfaces 58a and 58b constitute annular shaving surfaces 59a and 59b, and serve as sliding surfaces (tracks) on which the rotating inner blade contacts and travels.
  • the outer blade 54 can be formed by shallow drawing, the inconvenience is eliminated even if the hardness of the thin metal plate 56 is high, and the outer blade 54 can be processed. If the hardness of the thin metal plate 56 is insufficient (for example, in the case of HV 400 or less) or to further improve the durability of the outer blade 54, it is preferable to further heat treat the shallow drawn material (step S206). If the shaving surface 58 or the inner blade sliding surface which is the lower surface of the shaving surface 58 is further polished, the sliding with the skin becomes better when shaving, and the rotation of the inner blade becomes smooth and the sharpness of the eyebrows is improved. It is possible to expect work hardening or strain hardening of the thin metal plate 56 by drawing, and it is also possible to increase the surface hardness of the outer cutter 54 by this hardening.
  • FIG. 7 is a plan view of sheet metal blanks (blanks) 56A and 56B showing a modification of the slit processed in step a) (step S204).
  • the thin metal plate 56A of FIG. 6A is obtained by curving the slit 60A in an arc shape.
  • the thin metal plate 56B in FIG. 7B is the one in which the width of the slit 60B is changed in the length direction.
  • These slits 60A, 60B can be processed by press punching or etching.
  • FIG. 8 shows another embodiment of the wedge introduction hole of the outer cutter.
  • the outer blade 54C of this embodiment has two concentric annular shaving surfaces 58c and 58d, and the outer and inner shaving surfaces 58c and 58d have a slit 60c and a small hole 60d in the circumferential direction as a weir introduction hole respectively. It is divided and formed. That is, the slits 60c are arranged to be divided into four in the circumferential direction, and the small holes 60d are arranged between the slits 60c.
  • the rough shaving blade by combining the rough shaving blade with the slit 60c and the finishing blade with the small hole 60d, it is possible to obtain a shaving speed and finish feeling suitable for the skin of the user. That is, by appropriately setting the combination ratio of the rough shaving blade and the finishing blade, it is possible to adjust the shaving speed and finish feeling to the user's preference.
  • FIG. 9 is a plan view of an outer blade 54D according to still another embodiment, in which two concentric shaving surfaces 58e and 58f are formed with a small hole 60e, respectively.
  • both shaving surfaces 58e and 58f serve as finishing blades, a rotary shaver suitable for skin which is weak or sensitive to shaving can be obtained.
  • the outer blade 54D can also be used in combination with other outer blades, such as a rough shaving blade.
  • a resin ring 70 is formed by insert molding on the outer periphery of the outer blade 54 shown in FIGS. 2 and 3 and the outer blade 54 and the ring 70 are integrated. Since the outer cutter 54 is made of sheet metal, the overall rigidity may be insufficient. Therefore, in this embodiment, the ring 70 is fixed to the outer periphery of the outer blade 54 to increase the overall strength and rigidity.
  • the ring 70 is inserted from the rear (downward) into the outer blade insertion hole provided in the outer blade case 52a of the head portion 52 shown in FIG. 1 and is movable forward and backward (up and down) within a predetermined range and returns forward (upward) It is held possible.
  • the annular upper surface 68 of the ring 70 is slightly below and surrounds the outer shaving surface 58a. Therefore, when the outer blade 54 is strongly pressed against the skin, the outer side of the shaving surface 58a contacts the upper surface 68 of the ring 70, and the skin can be prevented from deeply entering the slit 60a of the shaving surface 58a and damaging the skin. .
  • Body 52 Head 54, 54C, 54D Outer blade 56, 56A, 56B Sheet metal (blank) 58 (58a, 58b, 58c, 58d, 58e, 58f) Shaving surface 60 (60a, 60b, 60c, 60A, 60B) Slit 60d, 60e Small hole 61 hole 64 annular groove 70 plastic ring

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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)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

L'invention porte sur un rasoir rotatif qui est équipé d'une lame extérieure dans laquelle de multiples trous d'acceptation de la barbe sont formés dans les surfaces de rasage qui forment des protubérances de forme annulaire, et d'une lame intérieure qui tourne en contact avec les gorges de rasage de forme annulaire de la surface inférieure de la lame extérieure, et qui coupe les poils qui entrent dans les trous d'acceptation de la barbe de la lame extérieure au moyen de la lame intérieure. La lame extérieure est réalisée dans une forme de lame extérieure en forme de disque par la formation de trous d'acception de la barbe dans une feuille métallique et par emboutissage de la feuille métallique. L'emboutissage profond de la feuille métallique n'est pas toujours nécessaire, l'utilisation de moules d'emboutissage spéciaux, le découpage ou des procédés d'usinage difficiles, tels que le procédé ECM ou usinage par décharge électrique, ne sont pas nécessaires et la productivité peut être significativement améliorée. La forme usinée des trous d'acceptation de la barbe n'est pas limitée à des lignes droites, ce qui permet d'agrandir le degré de liberté dans la conception de la surface de rasage. Le rasoir rotatif est aussi approprié pour réduire le poids qui pèse sur lui.
PCT/JP2011/077198 2011-08-09 2011-11-25 Rasoir rotatif, procédé de fabrication pour la lame extérieure de ce rasoir, et lame extérieure WO2013021514A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011173594A JP2014198059A (ja) 2011-08-09 2011-08-09 ロータリーシェーバーの外刃製造方法および外刃
JP2011-173594 2011-08-09

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WO2016091750A1 (fr) * 2014-12-09 2016-06-16 Koninklijke Philips N.V. Élément de protection pour l'utilisation dans une unité de coupe de cheveux
JP2017500909A (ja) * 2013-12-23 2017-01-12 ウェンシュウ ランウェ エレクトリカル アプライアンス コーポレーション リミテッドＷｅｎｚｈｏｕ Ｒｕｎｗｅ Ｅｌｅｃｔｒｉｃａｌ Ａｐｐｌｉａｎｃｅ Ｃｏ．， Ｌｔｄ シェーバー、シェーバー網刃およびシェーバー網刃の製造方法
CN108068144A (zh) * 2016-11-11 2018-05-25 浙江超人科技股份有限公司 电动剃须刀防脱离圆刀组件的加工方法
CN113478525A (zh) * 2021-06-09 2021-10-08 深圳素士科技股份有限公司 剃须部件、剃须刀单元、剃须头及剃须刀

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EP3736092A1 (fr) * 2019-05-08 2020-11-11 Koninklijke Philips N.V. Procédé de fabrication d'un élément de protection destiné à être utilisé dans une unité de coupe de cheveux

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JPH0938349A (ja) * 1995-05-19 1997-02-10 Matsushita Electric Works Ltd 電気かみそり用の刃組み合わせ体
JP2000509628A (ja) * 1997-02-17 2000-08-02 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 髭そり装置
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JP2003071154A (ja) * 2001-08-31 2003-03-11 Kanai Hiroaki 薄板状刃物部材及びその製造方法

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JPS4419800Y1 (fr) * 1968-04-13 1969-08-25
JPS4945912Y1 (fr) * 1970-06-01 1974-12-16
JPS56151079A (en) * 1980-04-23 1981-11-21 Matsushita Electric Works Ltd Rotary electric razor
JPH04114690A (ja) * 1990-09-03 1992-04-15 Seiko Epson Corp 回転式電気カミソリ
JPH06304677A (ja) * 1993-04-22 1994-11-01 Toyota Motor Corp 凹座成形方法
JPH08141228A (ja) * 1994-11-15 1996-06-04 Sanzen Seiko Kk 電気カミソリの外刃の製造方法
JPH0938349A (ja) * 1995-05-19 1997-02-10 Matsushita Electric Works Ltd 電気かみそり用の刃組み合わせ体
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