WO2021128439A1 - 一种旋转式电动剃须刀的内外刀 - Google Patents

一种旋转式电动剃须刀的内外刀 Download PDF

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Publication number
WO2021128439A1
WO2021128439A1 PCT/CN2020/000304 CN2020000304W WO2021128439A1 WO 2021128439 A1 WO2021128439 A1 WO 2021128439A1 CN 2020000304 W CN2020000304 W CN 2020000304W WO 2021128439 A1 WO2021128439 A1 WO 2021128439A1
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Prior art keywords
knife
blade
rotary electric
electric shaver
new type
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PCT/CN2020/000304
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English (en)
French (fr)
Inventor
黄勇辉
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黄勇辉
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Priority claimed from CN201911353623.6A external-priority patent/CN113021422A/zh
Application filed by 黄勇辉 filed Critical 黄勇辉
Publication of WO2021128439A1 publication Critical patent/WO2021128439A1/zh

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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

Definitions

  • the invention relates to an inner and outer knife of a new type of rotary electric shaver, in particular to an inner and outer knife of a new type of rotary electric shaver, or an inner and outer knife of an eccentric rotary electric shaver.
  • Rotary electric shaver means that the center of the inner knife and the outer knife basically coincide
  • the eccentric rotary electric shaver means that the center of the inner knife and the rotation center of the driving power source have a certain distance
  • the inner knife is in the power source (usually Refers to the motor) driving the lower axis to rotate along the center of rotation of the power source, and at the same time, the inner knife rotates around the center of the inner knife. Both inner knives will shave the beard hair passing through the beard introduction hole of the outer knives.
  • Known electric shavers are divided into rotary electric shavers and reciprocating electric shavers. These two electric shavers have their own advantages and disadvantages, but they are difficult to realize the function of automatic sharpening of the blade.
  • a new type of rotary electric shaver and an eccentric rotary electric shaver have appeared recently, which can realize bidirectional rotation, so as to achieve the grinding of the blades working in the reverse rotation during the forward rotation, and the reverse rotation during the reverse rotation. Grind the blade that rotates in the forward direction. But their inner and outer knives are not easy to produce and process.
  • the present invention provides a new type of inner and outer blades of electric shavers, which are used in rotary electric shavers and eccentric rotary electric shavers.
  • the purpose of the present invention is to overcome the defects of the prior art and provide a new type of inner and outer blade of a rotary electric shaver.
  • a new type of inner and outer knife of a rotary electric shaver including an outer knife, and an inner knife whose top is close to the bottom of the outer knife and slides and rotates around the center of the outer knife.
  • the plate has two or more penetrating through the plate in the thickness direction. Beard lead into the hole,
  • the inner knife is stamped by a sheet metal stamping die, the inner knife has at least one inner knife edge, the side of the inner knife edge is stamped by a stamping die, and the top of the inner knife edge is stamped by a stamping die and the material is removed Then a plane is formed, which is close to the bottom of the outer knife and slides and rotates around the center of the inner knife.
  • the outer knife has more than two rows of beard introduction holes along the radius direction at the center of the outer knife, and each row has at least two beard introduction holes, and each row of beard introduction holes is distributed in a concentric shape with the outer knife center as the center of the circle.
  • the upper part of the beard introduction hole of the outer knife is provided with a deformation restraining part, and the deformation restraining part has a slope structure and is lower than the top plane of the outer knife.
  • the inner knife has more than two rows of inner knife edges along the radius of the inner knife center.
  • the inner knife edges of the inner and outer rows are distributed in concentric circles around the inner knife center. Any two adjacent rows of inner knife edges in the radial direction are separated from the inner knife. Knife connection bridge connection.
  • the inner knife blade is a flange structure.
  • the flange is formed by stamping and removing part of the top material by a stamping die.
  • the top plane of the flange is the top of the inner knife, and the top of the flange is higher than the upper plane of the inner knife plate. .
  • the side of the inner knife blade has a slope structure.
  • the angle between the inclined surface of the inner knife blade and the top of the inner knife is 10-80°.
  • the side of the inner knife blade has a circular arc structure.
  • the circular arc structure of the inner knife edge is the process fillet in the stamping process of the stamping die.
  • the beard introduction hole of the outer knife has a serrated structure.
  • the present invention has the following beneficial effects: the inner and outer blades of a new type of rotary electric shaver of the present invention have the characteristics of simple inner and outer blade processing and ingenious structure, especially the inner blade processing with multiple rows of blades. There is not much difference between the processing with single-row blades, which saves the material of the inner blade and improves the production efficiency.
  • Figure 1 is an assembled perspective view of the inner and outer blades of a new type of rotary electric shaver of the present invention
  • Figure 2 is an assembled sectional view of the inner and outer blades of a new type of rotary electric shaver of the present invention
  • Figure 3 is a perspective view of the inner blade of the inner and outer blades of a new type of rotary electric shaver according to the present invention
  • FIG. 4 is a cross-sectional view of the inner blade of the inner and outer blades of a new type of rotary electric shaver according to the present invention
  • Figure 5 is a perspective view of the outer knife of the inner and outer knife of a new type of rotary electric shaver of the present invention.
  • FIG. 6 is a perspective view of the inner knife of the inner and outer knife of a new type of rotary electric shaver of the present invention without material removed after being punched;
  • FIG. 7 is a cross-sectional view of the inner knife of the inner and outer knife of a new type of rotary electric shaver of the present invention without removing material after being punched;
  • Figure 8 is a perspective view of a flange-containing structure of the inner blade of the inner and outer blades of a new type of rotary electric shaver according to the present invention.
  • FIG. 9 is a cross-sectional view of the inner blade-containing flange structure of the inner and outer blades of a new type of rotary electric shaver according to the present invention.
  • Fig. 10 is a partial enlarged view of Fig. 9 of the present invention.
  • the inner and outer blades of a new type of rotary electric shaver include an outer blade, and an inner blade whose top is close to the bottom of the outer blade and slides and rotates around its center.
  • Two or more whisker introduction holes penetrate through the plate in the thickness direction,
  • the inner knife is stamped by a sheet metal stamping die, the inner knife has at least one inner knife edge, the side of the inner knife edge is stamped by a stamping die, and the top of the inner knife edge is stamped by a stamping die and the material is removed Then a plane is formed, which is close to the bottom of the outer knife and slides and rotates around the center of the inner knife.
  • the outer knife has more than two rows of beard introduction holes along the radius direction at the center of the outer knife, and each row has at least two beard introduction holes, and each row of beard introduction holes is distributed in a concentric shape with the outer knife center as the center of the circle.
  • the upper part of the beard introduction hole of the outer knife is provided with a deformation restraining part, and the deformation restraining part has a slope structure and is lower than the top plane of the outer knife.
  • the inner knife has more than two rows of inner knife edges along the radius of the inner knife center.
  • the inner knife edges of the inner and outer rows are distributed in concentric circles around the inner knife center. Any two adjacent rows of inner knife edges in the radial direction are separated from the inner knife. Knife connection bridge connection.
  • the inner knife blade is a flange structure.
  • the flange is formed by stamping and removing part of the top material by a stamping die.
  • the top plane of the flange is the top of the inner knife, and the top of the flange is higher than the upper plane of the inner knife plate. .
  • Figure 1 shows the assembly diagram of the inner and outer knife and the cross-sectional view of the assembly of the inner and outer knife of Figure 2, when the beard enters the outer knife beard introduction hole 11, the rotating inner knife 2 drives the inner knife blade 22 to match the outer edge of the outer knife beard introduction hole 11 (such
  • the side of the zigzag structure 16 shown in the figure is not necessarily zigzag, but also arc-shaped sides) to cut the beard to achieve the function of shaving.
  • the beard introduction hole 11 of the outer knife 1 has a deformation restraining portion 12 above the hole 11 Lower than the top plane 13 of the outer knife, this structure facilitates the beard to enter the beard introduction hole 11, the deformation restraining part 12 can be an inclined surface or a curved surface, which is stamped and formed by a stamping die, and then the outer knife bottom 14 is obtained by removing material from the formed plate flat.
  • the position of the inner knife blade 22 in this embodiment is on the outside of the side of the serrated structure 16 of the outer knife beard introduction hole 11 relative to the inner knife center 24. In practical applications, the position of the inner knife blade 22 can also be inside the side of the serrated structure 16 of the outer knife beard introduction hole 11 relative to the inner knife center 24.
  • Figures 3 and 4 show the three-dimensional and cross-sectional views of the inner knife.
  • the side 21 of the inner knife blade is obtained by stamping and forming from a sheet material.
  • the stamping and forming process includes the bending of this embodiment ( Figure 6), and also includes stretching, which is performed after stamping and forming.
  • the removal of material forms the top 23 plane of the inner knife.
  • the side surface 21 of the inner knife blade can be a bevel or a curved surface.
  • the bottom of the inner knife and the side surface 21 of the inner knife blade form a process fillet by bending or stretching.
  • the inner knife is an arc surface, and the arc surface can also be an arc opposite to the process fillet, and the shape is determined by the punch structure of the stamping die.
  • Figures 8, 9, and 10 show the flanged structure of the inner knife of the inner and outer knife of a new type of rotary electric shaver of the present invention.
  • the upper edge of the inner knife has a flange structure.
  • the flange structure is higher than the upper plane of the inner knife plate. This structure reduces the contact area between the top of the inner knife and the bottom of the outer knife, thereby reducing the sliding friction between the inner knife and the outer knife.
  • the present invention has the following beneficial effects: the inner and outer blades of a new type of rotary electric shaver of the present invention have the characteristics of simple inner and outer blade processing and ingenious structure, especially the inner blade processing with multiple rows of blades. There is not much difference between the processing with single-row blades, which saves the material of the inner blade and improves the production efficiency.

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

Abstract

一种旋转式电动剃须刀的内外刀，包括外刀(1)，和顶部紧贴外刀底部(14)，并绕其中心滑动旋转的内刀(2)，外刀(1)由板材以冲压模具冲压而成，所述的板材具有在板厚方向贯穿板材的两个以上的胡须导入孔(11)，内刀(2)由板材冲压模具冲压而成，所述的内刀(2)至少有一个内刀刀刃(22)，所述的内刀刀刃侧面(21)由冲压模具冲压而成，所述的内刀刀刃顶部由冲压模具冲压并去除材料后形成平面，该平面紧贴外刀底部，并绕内刀中心(24)滑动旋转。

Description

[根据细则37.2由ISA制定的发明名称]　一种旋转式电动剃须刀的内外刀 技术领域
本发明涉及一种新型旋转式电动剃须刀的内外刀，具体是指一种新型的旋转式的电动剃须刀的内外刀，或者是偏心旋转式的电动剃须刀的内外刀。旋转式电动剃须刀是指内刀和外刀中心基本重合，偏心旋转式的电动剃须刀是指内刀中心和驱动动力源的旋转中心有一定的距离，内刀在动力源(一般是指电机)驱动下沿动力源旋转中心旋转，同时，内刀又绕内刀中心自转。两者的内刀都会把穿过外刀的胡须导入孔的胡须毛发剃除。
背景技术
公知的电动剃须刀由旋转式电动剃须刀和往复式电动剃须刀两种，这两种电动剃须刀各具有其优缺点，但它们都很难实现真正意义的自动研磨刀刃的功能，最新出现一种新型的旋转式电动剃须刀和一种偏心旋转式的电动剃须刀，它们可以实现双向旋转，从而达到的正向旋转时研磨反向旋转工作的刀刃，反向旋转时研磨正向旋转工作的刀刃。但是它们的内外刀都不容易生产加工。
如公开(公告)号：CN202878364U 一种偏心旋转式电动剃须刀
和公开(公告)号：CN108972637A 一种新型旋转式电动剃须刀
它们的外刀都具有多个胡须导入孔，但是它们的外刀胡须导入孔不方便于胡须的导入，从而导致剃须的效率较低。并且它们的内刀结构也比较难以生产加工，特别是当外刀需要多排胡须导入孔，和内刀需要多排内刀刀刃时更难实现工业制造。同时内刀的重量和材料又难以减低，从而增加成本。
鉴于上述类型的电动剃须刀的缺点，本发明提供一种新型电动剃须刀的内外刀，用于旋转式的电动剃须刀和偏心旋转式的电动剃须刀。
发明内容
本发明的目的在于为克服现有技术的缺陷，而提供本发明提供一种新型旋转式电动剃须刀的内外刀。提供克服内刀研磨问题以及方便加工生产、降低产品成本，方便胡须导入特别是长胡须导入的一种新技术。
为实现上述目的，本实用新型采用以下技术方案：
一种新型旋转式电动剃须刀的内外刀，包括外刀，和顶部紧贴外刀底部，并绕其中心滑动旋转的内刀，所述的板材具有在板厚方向贯穿板材的两个以上的胡须导入孔，
内刀由板材冲压模具冲压而成，所述的内刀至少有一个内刀刀刃，所述的内刀刀刃侧面由冲压模具冲压而成，所述的内刀刀刃顶部由冲压模具冲压并去除材料后形成平面，该平面紧贴外刀底部，并绕内刀中心滑动旋转。
外刀在外刀中心沿半径方向具有两排以上的胡须导入孔，每排至少有两个胡须导入孔，各排胡须导入孔以外刀中心为圆心呈同心圆形状分布。
外刀胡须导入孔上部具有变形抑制部，该变形抑制部为斜面结构，且低于外刀的顶部平面。
内刀在内刀中心的沿半径方向上具有两排以上的内刀刀刃，内外排的内刀刀刃绕内刀中心以同心圆分布，任何沿半径方向上相邻的两排内刀刀刃由内刀连接桥连接。
内刀刀刃上方为凸缘结构，所述的凸缘由冲压模具冲压并去除部分顶部材料而成，所述的凸缘顶部平面为内刀顶部，所述的凸缘顶部高于内刀板材上平面。
所述的内刀刀刃侧面为斜面结构。
所述的内刀刀刃斜面与内刀顶部夹角10-80°。
所述的内刀刀刃侧面为圆弧结构。
所述的内刀刀刃的圆弧结构为冲压模具中的冲压工艺中的工艺圆角。
外刀胡须导入孔为锯齿状结构。
本发明与现有技术相比的有益效果是：本发明的一种新型旋转式电动剃须刀的内外刀具有内外刀加工简单、结构巧妙的特点，特别是具有多排刀刃时的内刀加工与单排刀刃时的加工没有多大的区别，节约了内刀的材料提高了生产效率。
下面结合附图和具体实施例对本发明作进一步描述。
附图说明
图1是本发明一种新型旋转式电动剃须刀内外刀的组装立体图；
图2是本发明一种新型旋转式电动剃须刀内外刀的组装剖视图；
图3是本发明一种新型旋转式电动剃须刀内外刀的内刀的立体视图；
图4是本发明一种新型旋转式电动剃须刀内外刀的内刀的剖视图；
图5是本发明一种新型旋转式电动剃须刀内外刀的外刀的立体图；
图6是本发明一种新型旋转式电动剃须刀内外刀的内刀冲压后未去除材料的立体图；
图7是本发明一种新型旋转式电动剃须刀内外刀的内刀冲压后未去除材料的剖视图；
图8是本发明一种新型旋转式电动剃须刀内外刀的内刀含凸缘结构的立体图；
图9是本发明一种新型旋转式电动剃须刀内外刀的内刀含凸缘结构的剖视图；
图10本发明图9的局部放大图。
附图标记说明
1   外刀                       11   胡须导入孔
12  变形抑制部                 13   外刀的顶部平面
14  外刀底部                   15   外刀中心
16  锯齿状结构                 2    内刀
a   内刀刀刃斜面与内刀顶部夹角 21   内刀刀刃侧面
22  内刀刀刃                   23   内刀顶部
24  内刀中心       26  内刀板材上平面
27  内刀连接桥
具体实施方式
为了更充分理解本发明的技术内容，下面结合具体实施例和说明书附图(附图仅通过示意图表示本实用新型的结构，其形状、大小、比例与实际应用时是有所不同的)对本发明的技术方案进一步介绍和说明，但不局限于此。
如图1至图10所示，一种新型旋转式电动剃须刀的内外刀，包括外刀，和顶部紧贴外刀底部，并绕其中心滑动旋转的内刀，所述的板材具有在板厚方向贯穿板材的两个以上的胡须导入孔，
内刀由板材冲压模具冲压而成，所述的内刀至少有一个内刀刀刃，所述的内刀刀刃侧面由冲压模具冲压而成，所述的内刀刀刃顶部由冲压模具冲压并去除材料后形成平面，该平面紧贴外刀底部，并绕内刀中心滑动旋转。
外刀在外刀中心沿半径方向具有两排以上的胡须导入孔，每排至少有两个胡须导入孔，各排胡须导入孔以外刀中心为圆心呈同心圆形状分布。
外刀胡须导入孔上部具有变形抑制部，该变形抑制部为斜面结构，且低于外刀的顶部平面。
内刀在内刀中心的沿半径方向上具有两排以上的内刀刀刃，内外排的内刀刀刃绕内刀中心以同心圆分布，任何沿半径方向上相邻的两排内刀刀刃由内刀连接桥连接。
内刀刀刃上方为凸缘结构，所述的凸缘由冲压模具冲压并去除部分顶部材料而成，所述的凸缘顶部平面为内刀顶部，所述的凸缘顶部高于内刀板材上平面。
如图1所示的内外刀组装图和图2内外刀组装剖视图，当胡须进入外刀胡须导入孔11，旋转的内刀2带动内刀刀刃22，配合外刀胡须导入孔11的外边(如图所示的锯齿状结构16边，实际应用不一定是锯齿状，也可以的圆弧状边)把胡须切断，达到剃须的功能，外刀1的胡须导入孔11上部的变形抑制部12低于外刀的顶部平面13，此结构方便胡须进入胡须导入孔11，变形抑制部12可以是斜面或者弧面，由冲压模具冲压成型，然后外刀底部14由成型后的板材去除材料得到底部平面。需要注意的是，本实施例的 内刀刀刃22的位置在外刀胡须导入孔11的锯齿状结构16边的相对于内刀中心24的外面。实际应用中，内刀刀刃22的位置也可以在外刀胡须导入孔11的锯齿状结构16边的相对于内刀中心24的里面。
图3和图4展示的是内刀的立体图和剖视图，内刀刀刃侧面21由板材冲压成型后得到，冲压成型工艺包括本实施例折弯(图6)，还包括拉伸，冲压成型后进行去除材料形成了内刀顶部23平面。内刀刀刃侧面21可以是斜面，也可以是弧面，折弯或拉伸得到内刀底部和内刀刀刃侧面21形成一个工艺圆角，当内刀顶部去除较多的材料的时候，内刀刀刃侧面就是一个圆弧面了，圆弧面也可以是与工艺圆角反向的圆弧，由冲压模具的凸模结构决定形状。
图8、9、10展示了本发明一种新型旋转式电动剃须刀内外刀的内刀含凸缘结构，当冲压成型工艺后去除较少的材料时，内刀刀刃上方为凸缘结构，凸缘结构高于内刀板材上平面，这种结构减少了内刀顶部紧贴外刀底部的接触面积，从而减少内外刀之间的滑动摩擦力。
本发明与现有技术相比的有益效果是：本发明的一种新型旋转式电动剃须刀的内外刀具有内外刀加工简单、结构巧妙的特点，特别是具有多排刀刃时的内刀加工与单排刀刃时的加工没有多大的区别，节约了内刀的材料提高了生产效率。
以上所述仅以实施例来进一步说明本发明的技术内容，以便于读者更容易理解，但不代表本实用新型的实施方式仅限于此，本发明的保护范围以权利要求书为准。

Claims (10)

  1. 一种新型旋转式电动剃须刀的内外刀，包括外刀，和顶部紧贴外刀底部，并绕其中心滑动旋转的内刀，
    其特征在于，外刀由板材以冲压模具冲压而成，所述的板材具有在板厚方向贯穿板材的两个以上的胡须导入孔，
    内刀由板材冲压模具冲压而成，所述的内刀至少有一个内刀刀刃，所述的内刀刀刃侧面由冲压模具冲压而成，所述的内刀刀刃顶部由冲压模具冲压并去除材料后形成平面，该平面紧贴外刀底部，并绕内刀中心滑动旋转。
  2. 根据权利要求1所述的一种新型旋转式电动剃须刀的内外刀，其特征在于：外刀在外刀中心沿半径方向具有两排以上的胡须导入孔，每排至少有两个胡须导入孔，各排胡须导入孔以外刀中心为圆心呈同心圆形状分布。
  3. 根据权利要求1所述的一种新型旋转式电动剃须刀的内外刀，其特征在于：外刀胡须导入孔上部具有变形抑制部，该变形抑制部为斜面结构，且低于外刀的顶部平面。
  4. 根据权利要求1所述的一种新型旋转式电动剃须刀的内外刀，其特征在于：内刀在内刀中心的沿半径方向上具有两排以上的内刀刀刃，内外排的内刀刀刃绕内刀中心以同心圆分布，任何沿半径方向上相邻的两排内刀刀刃由内刀连接桥连接。
  5. 根据权利要求1所述的一种新型旋转式电动剃须刀的内外刀，其特征在于：内刀刀刃上方为凸缘结构，所述的凸缘由冲压模具冲压并去除部分顶部材料而成，所述的凸缘顶部平面为内刀顶部，所述的凸缘顶部高于内刀板材上平面。
  6. 根据权利要求1、4、5所述的一种新型旋转式电动剃须刀的内外刀，其特征在于：所述的内刀刀刃侧面为斜面结构。
  7. 根据权利要求6所述的一种新型旋转式电动剃须刀的内外刀，其特征在于：所述的内刀刀刃斜面与内刀顶部夹角10-80°。
  8. 根据权利要求1、4、5所述的一种新型旋转式电动剃须刀的内外刀，其特征在于：所述的内刀刀刃侧面为圆弧结构。
  9. 根据权利要求8所述的一种新型旋转式电动剃须刀的内外刀，其特征在于：所述的内刀刀刃的圆弧结构为冲压模具中的冲压工艺中的工艺圆角。
  10. 根据权利要求1、2、3所述的一种新型旋转式电动剃须刀的内外刀，其特征在于：外刀胡须导入孔为锯齿状结构。
PCT/CN2020/000304 2019-12-24 2020-12-16 一种旋转式电动剃须刀的内外刀 WO2021128439A1 (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4294010A (en) * 1980-05-23 1981-10-13 Warner-Lambert Company Rotatable safety razor and blade cartridge therefor
US4521962A (en) * 1984-02-27 1985-06-11 Harold Van Natta Grooming device
EP0544065A1 (en) * 1991-11-26 1993-06-02 Matsushita Electric Works, Ltd. Rotary dry shaver
CN207387728U (zh) * 2017-06-05 2018-05-22 黄勇辉 一种新型旋转式剃须刀

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4294010A (en) * 1980-05-23 1981-10-13 Warner-Lambert Company Rotatable safety razor and blade cartridge therefor
US4521962A (en) * 1984-02-27 1985-06-11 Harold Van Natta Grooming device
EP0544065A1 (en) * 1991-11-26 1993-06-02 Matsushita Electric Works, Ltd. Rotary dry shaver
CN207387728U (zh) * 2017-06-05 2018-05-22 黄勇辉 一种新型旋转式剃须刀

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