WO2021213531A1 - 一种往复式剃刀刀头及其制造方法 - Google Patents

一种往复式剃刀刀头及其制造方法 Download PDF

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Publication number
WO2021213531A1
WO2021213531A1 PCT/CN2021/091605 CN2021091605W WO2021213531A1 WO 2021213531 A1 WO2021213531 A1 WO 2021213531A1 CN 2021091605 W CN2021091605 W CN 2021091605W WO 2021213531 A1 WO2021213531 A1 WO 2021213531A1
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WIPO (PCT)
Prior art keywords
fixed knife
fixed
basin
knife
fixed blade
Prior art date
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PCT/CN2021/091605
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English (en)
French (fr)
Inventor
吴让攀
Original Assignee
中山市小石陶瓷刀片有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 中山市小石陶瓷刀片有限公司 filed Critical 中山市小石陶瓷刀片有限公司
Priority to US17/917,079 priority Critical patent/US20230150155A1/en
Publication of WO2021213531A1 publication Critical patent/WO2021213531A1/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
    • B26B19/02—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
    • B26B19/06—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving co-operating cutting elements both of which have shearing teeth
    • B26B19/08—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving co-operating cutting elements both of which have shearing teeth of nipper type
    • 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
    • B26B19/06—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving co-operating cutting elements both of which have shearing teeth
    • 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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3846—Blades; Cutters

Definitions

  • the invention relates to a reciprocating razor head, and the invention also relates to a manufacturing method of the reciprocating razor head.
  • the knife net of the cutter head is made of sheet-shaped metal fixed knives from the left and right ends of the corresponding bending, and then fixed in the fixed by injection molding or other methods.
  • the left and right sides of the knife holder are all designed to have a linear shape with open front and rear ends (the direction of reciprocating movement of the movable knife is the front and rear direction), and there are ports at the front and rear ends. The two ports are installed.
  • the present invention is made based on this situation.
  • the purpose of the present invention is to overcome the shortcomings of the prior art and provide a reciprocating razor head with a simple structure and low cost. It is wrapped underneath to form a skin drum structure, with a smooth transition of the cutting top surface and the side surface close to the top surface, smooth and neat, skin-tight, and can remove body hair cleanly at one time.
  • a reciprocating razor head which is characterized in that it comprises a fixed knife and a fixed knife holder for supporting and fixing the fixed knife.
  • the fixed knife is a flexible metal sheet with flexibility
  • the fixed knife holder is a basin-shaped bracket.
  • the fixed knife is supported by the edge of the basin of the fixed knife holder, and the fixed knife is bent downward to wrap around the outer side of the basin wall around the fixed knife holder so that the top surface of the fixed knife and the side surface close to the top surface are smooth
  • a cutting cavity is formed between the fixed knife and the fixed knife holder, the fixed knife is provided with a pore for donor hair to enter the cutting cavity, and the cutting cavity is located below the fixed knife with a relatively fixed knife
  • a movable knife that reciprocates back and forth to cut the body hair into the pores.
  • the movable knife is provided with cutting teeth corresponding to the pores and used for cutting body hair.
  • the transmission component that connects the movable knife with the power unit of the electric shaver.
  • a reciprocating razor head as described above is characterized in that: round corners are provided between the left and right basin walls and the front and rear basin walls of the fixed blade holder to smoothly transition the left and right basin walls and the front and rear basin walls.
  • the reciprocating razor head as described above is characterized in that: the fixed blade holder is provided with pores for cutting the hair falling out of the cutting cavity.
  • a reciprocating razor head as described above characterized in that: the fixed knife and the fixed knife holder are made of weldable metal material, and the side of the fixed knife bent downward from all sides is welded around the fixed knife holder On the wall of the basin.
  • a reciprocating razor head as described above characterized in that: the pores are evenly arranged on the left and/or right side of the fixed knife, fixed cutting teeth are formed between two adjacent pores, and the fixed knife
  • the left and/or right basin walls of the frame are provided with hair inlet grooves corresponding to the hair inlet holes and capable of feeding body hair in and out of the cutting cavity.
  • a reciprocating razor head as described above characterized in that: the top surface and the left and right sides of the fixed knife are respectively acute angles, and a smooth transitional chamfer is formed between the top surface and the left and right sides.
  • a reciprocating razor head as described above characterized in that: the pores on the left and/or the right side are inwardly recessed from the outside to the inside in the left and right direction of the spur structure, the spur structure is continuous and smooth It is composed of a slip curve, and from the outside to the middle from wide to narrow, from the middle to the inside and then from narrow to wide.
  • the width of the outside entrance is L1
  • the width of the narrowest part of the middle is L2
  • the corresponding cutting teeth are located at the middle of the most.
  • the width of the isthmus structure at the position corresponding to the outer edge of the cutting tooth is L3, and the depth from the narrowest part of the middle part to the outer edge of the corresponding cutting tooth is L4, from the outer entrance to the corresponding cutting tooth
  • the depth at the outer edge is L5, which satisfies the following relationship: L1>L3>L2, and 0.1mm ⁇ L2 ⁇ 0.3mm, 0.1mm ⁇ L4 ⁇ 1mm, L5 ⁇ 1.2mm.
  • a reciprocating razor head as described above characterized in that the left and right basin walls and the front and rear basin walls of the fixed knife holder are at the same height at the basin mouth, the top surface of the fixed knife is flat, and the movable knife The top surface is a plane that matches the bottom surface of the fixed knife.
  • a reciprocating razor head as described above characterized in that: the front and rear basin walls of the fixed blade holder are higher than the left and right basin walls, and the tops of the front and rear basin walls have an arc-shaped structure and smoothly transition with the left and right basin walls.
  • the top surface of the fixed knife is an arc surface corresponding to the front and rear basin walls, and the top surface of the movable knife is an arc surface matched with the bottom surface of the fixed knife.
  • the skin drum structure has a smooth transitional cutting top surface and a side surface close to the top surface, which is smooth and neat and close to the skin, and improves the shaving effect of the reciprocating razor head.
  • a method for manufacturing the reciprocating razor head as described above includes the following steps:
  • the present invention has the following advantages:
  • the fixed knife in the present invention is a flexible metal sheet, and is supported by the basin wall around the fixed knife holder. Using the flexibility and toughness of the flexible metal sheet itself, the fixed knife can be stretched around, and the fixed knife can be stretched around under a certain external force.
  • the fixed knife is bent downwards, tightened, and attached to the outer side of the basin wall around the fixed knife holder, and the fixed knife is tightened and fixed on the basin wall of the fixed knife holder by welding or riveting, so that the top surface of the fixed knife and The side surface close to the top surface has a smooth transition, wrapping the upper end and the bowl mouth of the fixed knife holder from top to bottom to form a skin drum structure.
  • the top and side surfaces of the fixed knife are the top and side surfaces of the razor head, smooth Neat and skin-tight, when cutting hair, the razor head moves against the skin with the top surface of the fixed knife and/or the side close to the top surface.
  • the cutting surface can be cut against the skin in all directions, and the cutting effect is good. It can easily cut some concave parts of the body, and the contact surface with the skin is the top surface of the fixed knife and/or the side close to the top surface, so that the razor head can smoothly slide on the skin surface and shave Good hair comfort.
  • the fixed knife and the fixed knife holder form a structure similar to a leather drum.
  • the fixed knife holder is a drum body, and the fixed knife is a tensioned drum skin covering the drum body. Because the skin drum skin has the principle of pretension, The fixed knife is tightened on the fixed knife holder, so that the fixed knife can obtain a very flat cutting surface in contact with the movable knife without requiring additional precision processing.
  • the process is simple, the processing is convenient, and the manufacturing cost of parts is low; in addition, Avoiding the rigidity requirements of the fixed knife, the thickness of the fixed knife can be ultra-thin that other process structures cannot achieve.
  • the thickness of the fixed knife h can be within the range of 0 ⁇ h ⁇ 0.08mm, so that the fixed knife can be ignored when shaving. The thickness of the knife can remove the body hair cleanly at one time.
  • the pores on the left and right sides are an isthmus structure that is concave from the outside to the inside in the left and right direction.
  • the isthmus structure is composed of a continuous smooth curve, and from the outside to the middle, it is wide to narrow. From the middle to the inside, it changes from narrower to wider.
  • the width at the outer entrance is L1
  • the width at the narrowest part of the middle is L2.
  • the corresponding cutting teeth are located on the inner side of the narrowest part; the initial position of the cut of the isthmus structure is also That is, the isthmus structure corresponds to the position of the outer edge of the cutting tooth, the width at the initial position of the cutting is L3, the depth from the narrowest part of the middle to the outer edge of the corresponding cutting tooth is L4, from the outer entrance to the corresponding
  • the depth of the outer edge of the cutting tooth is L5, which satisfies the following relationship: L1>L3>L2, and 0.1mm ⁇ L2 ⁇ 0.3mm, 0.1mm ⁇ L4 ⁇ 1mm, L5 ⁇ 1.2mm, the preferred range is 0.2mm ⁇ L4 ⁇ 0.4mm, L5 ⁇ 1.0mm, the pores are not only convenient to enter the hair, but also prevent the hair from running out after the hair enters, which not only has a good cutting effect, and at the same time, it can squeeze the meat in a narrow place when moving and cutting. Go out to prevent the skin from contacting the high-speed moving knife at the initial position of the
  • the top surface and the left and right sides of the fixed knife are respectively acute angles, and a smooth transition chamfer is formed between the top surface and the left and right sides.
  • the height of the chamfer D ⁇ 1.0mm, so that the left and right sides
  • the fixed cutting teeth on both sides form a comb-tooth structure that is good for combing the hair, which has a good effect of guiding the hair and improving the cutting effect.
  • the manufacturing method of the reciprocating razor head of the present invention has simple process and low manufacturing cost.
  • the top surface of the razor head and the side surface close to the top surface are formed by a whole fixed knife stretched and wrapped downward, which is smooth It is neat, good skin fit, and avoids higher rigidity requirements of the fixed knife, so that the thickness of the fixed knife can be ultra-thin that other process structures cannot achieve, so that the thickness of the fixed knife can be ignored when shaving, and it can be used at one time.
  • the removal of body hair is relatively clean.
  • the thickness of the fixed knife in the present invention is h, which satisfies: 0 ⁇ h ⁇ 0.08mm, and the ultra-thin flexible metal sheet is used to make the removal of body hair more thorough and clean.
  • an elastic pressing member that can press the movable knife against the fixed knife between the movable knife and the fixed knife holder, so that the body hair removal is easier, and the reciprocating razor blade is sharper.
  • Figure 1 is an exploded view of a reciprocating razor head of the present invention
  • Figure 2 is a schematic view of the structure of a reciprocating razor head of the present invention.
  • Figure 3 is a schematic diagram of the bottom structure of a reciprocating razor head of the present invention.
  • Figure 4 is a schematic diagram of the stretching and bending of the fixed knife in the present invention.
  • Figure 5 is a schematic diagram of the structure of the cutter head when the fixed cutter is not installed
  • Figure 6 is a top view of a reciprocating razor head of the present invention.
  • Figure 7 is a cross-sectional view along the A-A direction in Figure 6;
  • Fig. 8 is a cross-sectional view of the cutter head with a cambered top surface along the direction B-B in Fig. 6;
  • Figure 9 is an exploded view of a fixed knife with a cambered top surface and a corresponding fixed knife holder
  • Figure 10 is an exploded view of a fixed knife with a planar top surface and a corresponding fixed knife holder
  • Figure 11 is a cross-sectional view of the cutter head with a planar top surface along the direction B-B in Figure 6;
  • Figure 12 is a schematic diagram of the structure of the pores on the left and right sides.
  • the fixed knife 1 is a flexible metal sheet with flexibility
  • the fixed knife holder 2 is a basin-shaped support
  • the fixed knife 1 is supported by the edge of the basin mouth of the fixed knife holder 2
  • the fixed knife 1 is bent downward and wrapped around the outer side of the basin wall around the fixed knife holder 2
  • the top surface of the fixed knife 1 and the side surface close to the top surface are smoothly transitioned.
  • a cutting cavity 10 is formed between the fixed knife 1 and the fixed knife holder 2.
  • the fixed knife 1 is provided with donor hairs entering the cutting cavity 10 In the pore 11, the side wall of the pore 11 forms a cutting edge.
  • the cutting cavity 10 is located below the fixed knife 1 and is provided with a movable knife 3 that can reciprocate back and forth relative to the fixed knife 1 to cut the body hair in the pore 11,
  • the movable knife 3 is provided with cutting teeth 31 corresponding to the pores 11 and used for cutting body hair.
  • the reciprocating razor head also includes a power device that penetrates the bottom of the fixed knife holder 2 to connect the movable knife 3 with the electric razor Connected transmission parts 4.
  • the fixed knife 1 is a flexible metal sheet and is supported by the basin wall around the fixed knife holder 2, the fixed knife 1 can be stretched around by using the flexibility and toughness of the flexible metal sheet, and the fixed knife 1 can be stretched around under a certain external force.
  • the knife 1 is bent downward, tightened, and attached to the outer side of the basin wall around the fixed knife holder 2, and the fixed knife 1 is tightened and fixed on the basin wall of the fixed knife holder 2 by welding or riveting, so that the fixed knife 1
  • the smooth transition between the top surface and the side surface close to the top surface of the fixed knife holder 2 wraps the upper end and the bowl mouth from top to bottom to form a structure similar to a leather drum.
  • the top and side surfaces of the fixed knife 1 are the razor head
  • the top and side surfaces are smooth, neat and close to the skin.
  • the razor head uses the top surface of the fixed blade 1, the side surface close to the top surface, or both the top surface and the side surface to move against the skin at the same time, and the cutting surface can be cut against the skin in all directions.
  • the effect is good, it can cut some concave parts of the body easily, and the contact surface with the skin is the top surface of the fixed knife 1 with a smooth transition, the side near the top surface, or both contact the skin at the same time, so that the razor head can Glides smoothly on the skin surface with good shave comfort.
  • the fixed knife 1 and the fixed knife holder 2 form a structure similar to a leather drum.
  • the fixed knife holder 2 is a drum body, and the fixed knife 1 is a tensioned drum skin covering the drum body. Because the skin drum skin has a pre-tension principle , The fixed knife 1 is tightened on the fixed knife holder 2, so that the fixed knife 1 can obtain a very flat cutting surface in contact with the movable knife 3 without the need for additional precision processing. The process is simple, the processing is convenient, and the parts are manufactured.
  • the thickness of the fixed knife 1 can be ultra-thin that other process structures cannot achieve, and the thickness h of the fixed knife 1 can be within the range of 0 ⁇ h ⁇ 0.08mm Therefore, the influence of the thickness of the fixed knife 1 can be ignored when shaving, and the body hair can be removed relatively cleanly at one time.
  • the left and right basin walls and the front and rear basin walls of the fixed knife holder 2 are provided with round corners 22 that smoothly connect the left and right basin walls with the front and rear basin walls, which is convenient for the fixed knife 1 to be bent down and covered, so that the fixed knife 1
  • the surrounding arc transition improves the comfort of cutting.
  • the pores 11 can be evenly arranged on the left side of the fixed knife 1, or on the right side of the fixed knife 1, or can be arranged on both the left and right sides of the fixed knife 1, between two adjacent pores 11
  • the fixed cutting teeth 12 are formed.
  • the left and right basin walls of the fixed knife holder 2 are provided with hair inlet grooves 21 corresponding to the pores 11 and capable of feeding body hair in and out of the cutting cavity 10. The hair can be fed through the hair inlet groove 21. After the shaving is completed, the user can also clean up the hair that has fallen out.
  • the fixed blade holder 2 may additionally be provided with pores 23 for cutting the hairs falling out in the cutting cavity 10, so as to more conveniently clean the hairs.
  • the top surface and the left and right sides of the fixed knife 1 are respectively acute angles, and a smooth transition chamfer R1 is formed between the top surface and the left and right sides.
  • the height D of the chamfer R1 is less than 1.0mm, and the hair is guided The effect is good and the cutting effect is improved.
  • the pores 11 located on the left and right sides are an isthmus structure that is concave from the outside to the inside in the left and right direction.
  • the isthmus structure is composed of a continuous smooth curve, and from the outside to the middle, it is wide to Narrow, from the middle to the inside and then from narrow to widening, the width of the outside entrance is L1, the width of the narrowest part of the middle is L2, and the corresponding cutting tooth 31 is located inside the narrowest part of the middle; the isthmus structure is cut.
  • the initial position of the isthmus structure corresponds to the outer edge of the cutting tooth 31.
  • the width of the initial position of the cutting is L3, which satisfies the following relationship: L1>L3>L2, and 0.1mm ⁇ L2 ⁇ 0.3mm ,
  • the entrance is wide to facilitate hair in, the middle is narrow and the inner side is wide, which can prevent the hair from entering and then running out.
  • the meat entering from the outer entrance can be squeezed out at the narrow part to prevent skin contact and cutting.
  • the moving knife moving at high speed at the initial position.
  • the depth of the isthmus structure from the narrowest part of the middle part to the outer edge of the corresponding cutting tooth 31 is L4, and 0.1mm ⁇ L4 ⁇ 1mm, which prevents the skin from deforming under squeezing.
  • the preferred range is 0.2mm ⁇ L4 ⁇ 0.4mm, which not only provides safety protection, but also ensures the cutting to the hair; the isthmus structure extends from the outer entrance to the corresponding cutting teeth
  • the depth at the outer edge of 31 is L5, L5 ⁇ 1.2mm, and the preferred range is L5 ⁇ 1.0mm, which ensures the depth of hair entry and guides the hair into the cutting. It is also convenient to control the depth of the isthmus structure to ensure the fixed cutting teeth 12 Structural strength.
  • the middle part of the fixed knife 1 may also have a pore 11, and the movable knife 3 is provided with cutting teeth 31 corresponding to the middle part, so as to cut hair in multiple directions.
  • the left and right basin walls and the front and rear basin walls of the fixed knife holder 2 are equal in height at the mouth of the basin, the top surface of the fixed knife 1 is a flat surface, and the top surface of the movable knife 3 is matched with the bottom surface of the fixed knife 1 Plane, to achieve plane cutting, as shown in Figure 10 and Figure 11.
  • the front and rear basin walls of the fixed knife holder 2 can also be higher than the left and right basin walls, and the tops of the front and rear basin walls have an arc-shaped structure and smoothly transition with the left and right basin walls.
  • the fixed knife 1 The top surface of is the arc surface corresponding to the front and rear basin walls, the top surface of the movable knife 3 is the arc surface that matches with the bottom surface of the fixed knife 1 to realize arc cutting, preferably, when the top surface of the fixed knife 1 In the case of a curved surface structure, the fixed knife 1 has a pore 11 in the middle, and the movable knife 3 has a cutting tooth 31 corresponding to the middle, so as to better cut the hair on the concave part of the body.
  • the transmission component 4 includes a movable knife support 41 fixedly connected to the movable knife 3 and a driving seat 42 connected to the power device of the electric shaver.
  • the elastic pressing member 5 pressed on the fixed knife 1 pushes the movable knife 3 upward through the elastic pressing member 5, so that the movable knife 3 and the fixed knife 1 are in close contact with each other and form a pre-pressure to ensure the removal of body hair by the reciprocating razor head. Sharpness.
  • the bottom of the fixed knife holder 2 is fixed with a sliding support block 6 for supporting the movable knife holder 41 and guiding the movable knife holder 41 to reciprocate back and forth.
  • the sliding support block 6 can be fixed with the fixed knife holder 2 by integral injection molding.
  • the fixed knife 1 and the fixed knife holder 2 are made of weldable metal materials, so that the side of the fixed knife 1 bent downward from the periphery is welded to the basin wall around the fixed knife holder 2.
  • the fixed knife holder 2 has a basin-shaped structure with a large basin mouth and a small basin bottom, and the basin wall around the fixed knife holder 2 takes the basin mouth as the base point and retracts from top to bottom so that the fixed knife 1 is fixed in the basin. After the wall is on, the edge is retracted into the lower inner side of the top of the razor head to avoid contact with the skin.
  • a method for manufacturing the above-mentioned reciprocating razor head includes the following steps:
  • an elastic pressing member 5 can be installed in the fixed knife holder 2 and placed under the movable knife 3.
  • the movable knife 3 is elastically pushed up on the bowl mouth of the fixed knife holder 2 by the elastic pressing member 5.
  • step C when the fixed knife 1 is wrapped on the basin mouth of the fixed knife holder 2, when the fixed knife 1 is bent, tightened and tightened on the basin wall of the fixed knife holder 2, the inner side of the fixed knife 1
  • the movable knife 3 is pressed down against the movable knife 3, and a pre-pressure is formed between the movable knife 3 and the fixed knife 1.
  • the manufacturing method is simple in process and low in manufacturing cost.
  • the top surface of the razor head and the side surface close to the top surface are formed by stretching and wrapping downwards by an integral fixed knife, which is smooth and neat, has good skin adhesion, and avoids alignment.
  • the high rigidity requirement of the knife 1 enables the thickness of the fixed knife 1 to be ultra-thin that other process structures cannot achieve, so that the influence of the thickness of the fixed knife 1 can be ignored when shaving, and the body hair can be removed cleanly at one time.

Abstract

一种往复式剃刀刀头，包括定刀（1）和用于支撑并固定定刀（1）的定刀架（2），定刀（1）为具有柔韧性的柔性金属薄片，定刀架（2）为盆形支架，定刀（1）以定刀架（2）的盆口边缘为支撑，定刀（1）四周向下弯折包裹在定刀架（2）四周的盆壁外侧上并使定刀（1）的顶面和靠近顶面的侧面圆滑过渡，定刀（1）和定刀架（2）之间形成切割内腔（10），定刀（1）上设有进毛孔（11），切割内腔（10）中设有能相对定刀（1）前后往复运动进而切断体毛的动刀（3），动刀（3）上设有与进毛孔（11）相对应的切割齿（31），还包括穿过定刀架（2）底部将动刀（3）与动力装置连接的传动部件（4）。还公开了一种制造往复式剃刀刀头的方法。该往复式剃刀刀头具有圆滑过渡的顶面和四周侧面，形成皮鼓结构，平滑工整贴肤，能切割身体一些下凹部位，剃毛舒适性好。

Description

一种往复式剃刀刀头及其制造方法 【技术领域】
本发明涉及一种往复式剃刀刀头，本发明还涉及一种往复式剃刀刀头的制造方法。
【背景领域】
现有的往复式电动剃毛刀头，如专利授权公告号CN204954880U，名称为刀片组和毛发切割器，以及专利号ZL201610889953.7，名称为一种往复式电动剃毛刀头，这些现有的产品，由于现有制造工艺及其成熟的设计理念的限制，刀头的刀网,都是由薄片状的金属定刀从左右两端做相应的弯折后再通过注塑和其他方式固定在定刀支架的左右两侧上所构成，都是设计成前后两端开放式的线状形状(动刀往复运动的方向为前后方向)，前后两端有端口，动刀及其他构件分别从前后两端口装入，两个端口上，由于定刀边缘外露，有刺伤皮肤的风险，为避免刮毛时锋利的边缘刺伤皮肤，通常需要在两端上包上端盖，遮挡刀的边缘，这种刀头结构，在使用时，首先是端盖贴着皮肤，切割面被端盖顶起，由于大部分皮肤为能够挤压变换的曲面形状，只要将端盖做薄，切割面大部分还是能很好的贴着皮肤切割毛发，只是靠近端盖的少部分切割面会被端盖顶起在皮肤之上无法有效切割；但是对于一些凹下部位的剃毛，比如胳膊窝，切割面则会被两边端盖顶住，无法有效的接触皮肤进行剃毛。而且现有的端盖，通常都是注塑 件，塑胶角和披锋会刮到人，虽然不如刀锋般刺伤皮肤，也会带来一定的不适感。
本发明就是基于这种情况作出的。
【发明内容】
本发明的目的在于克服现有技术的不足之处，提供一种结构简单、成本低的往复式剃刀刀头，该往复式剃刀刀头通过定刀将定刀架的上端和盆口从上往下包裹住，形成皮鼓结构，具有圆滑过渡的切割顶面和靠近顶面的侧面，平滑工整，贴肤，且可以一次性将体毛切除干净。
本发明是通过以下技术方案实现的：
一种往复式剃刀刀头，其特征在于：包括定刀和用于支撑并固定定刀的定刀架,所述定刀为具有柔韧性的柔性金属薄片，所述定刀架为盆形支架，所述定刀以定刀架的盆口边缘为支撑，所述定刀四周向下弯折包裹在定刀架四周的盆壁外侧上并使定刀的顶面和靠近顶面的侧面圆滑过渡，所述定刀和定刀架之间形成切割内腔，所述定刀上设有供体毛进入切割内腔的进毛孔，所述切割内腔中位于定刀下方设有能相对定刀前后往复运动进而切断进毛孔内的体毛的动刀，所述动刀上设有与进毛孔相对应的并用于切割体毛的切割齿，所述往复式剃刀刀头还包括穿过定刀架底部将动刀与电动剃刀的动力装置连接的传动部件。
如上所述的一种往复式剃刀刀头，其特征在于：所述定刀架的左右盆壁和前后盆壁之间设有使左右盆壁和前后盆壁圆滑过渡连接的 圆角。
如上所述的一种往复式剃刀刀头，其特征在于：所述定刀架上设有用于供切断在切割内腔中的毛发掉出的掉毛孔。
如上所述的一种往复式剃刀刀头，其特征在于：所述定刀和定刀架采用能焊接的金属材料制成，且定刀从四周向下弯折的侧面焊接在定刀架四周的盆壁上。
如上所述的一种往复式剃刀刀头，其特征在于：所述进毛孔均匀设在定刀左侧和/或右侧，相邻两个进毛孔之间形成定切割齿，所述定刀架的左和/或右盆壁上设有与进毛孔相对应并能供体毛进出切割内腔的进毛槽。
如上所述的一种往复式剃刀刀头，其特征在于：所述定刀的顶面和左右两侧面分别成锐角，且顶面和左右两侧面之间形成有圆滑过渡的倒角，该倒角的高度D<1.0mm。
如上所述的一种往复式剃刀刀头，其特征在于：左侧和/或右侧所述进毛孔为在左右方向上从外侧向内侧内凹的峡口结构，该峡口结构由连续顺滑曲线组成，且从外侧到中部由宽到窄，从中部到内侧再由窄变宽，其外侧入口处的宽度为L1,中部最窄处的宽度为L2，相对应的切割齿位于中部最窄处的内侧，该峡口结构对应切割齿的外边缘的位置处的宽度为L3，从中部最窄处到对应切割齿的外边缘处的深度为L4，从外侧入口处到对应切割齿的外边缘处的深度为L5，满足如下关系式：L1>L3>L2，且0.1mm≤L2≤0.3mm，0.1mm≤L4≤1mm，L5≤1.2mm。
如上所述的一种往复式剃刀刀头，其特征在于：所述定刀架的左右盆壁和前后盆壁在盆口处等高，所述定刀的顶面为平面，所述动刀的顶面为与定刀的底面相配合的平面。
如上所述的一种往复式剃刀刀头，其特征在于：所述定刀架的前后盆壁高于左右盆壁，且前后盆壁的顶部为弧形结构并与左右盆壁圆滑过渡，所述定刀的顶面为与前后盆壁相对应的弧面，所述动刀的顶面为与定刀的底面相配合的弧面。
本发明所要解决的另一技术问题是提供一种制造如上所述的往复式剃刀刀头的方法，该方法工艺简单，定刀将定刀架的上端和盆口从上往下包裹住，形成皮鼓结构，具有圆滑过渡的切割顶面和靠近顶面的侧面，平滑工整，贴肤，提高往复式剃刀刀头的剃毛效果。
本发明是通过以下技术方案实现的：
一种制造如上所述的往复式剃刀刀头的方法，包括以下步骤：
A、按设计制作好展开状态的定刀；
B、将动刀与传动部件连接并安装在定刀架内；
C、将定刀向四周拉伸，以定刀架的盆口边缘为支撑，在一定外力作用下将定刀四周向下弯折、拉紧、贴在定刀架四周的盆壁外侧上，并通过焊接或者铆接将定刀绷紧固定在定刀架的盆壁上，使定刀的顶面和靠近顶面的侧面圆滑过渡，将定刀架的上端和盆口从上往西包裹起来，形成皮鼓结构。
与现有技术相比，本发明有如下优点：
1、本发明中所述定刀为柔性金属薄片，并通过定刀架四周盆壁 的支撑，利用柔性金属薄片自身的柔性和韧性，可将定刀向四周拉伸，在一定外力作用下将定刀四周向下弯折、拉紧、贴在定刀架四周的盆壁外侧上，并通过焊接或者铆接将定刀绷紧固定在定刀架的盆壁上，使定刀的顶面和靠近顶面的侧面圆滑过渡，将定刀架的上端和盆口从上往下包裹住，形成皮鼓结构，该定刀的顶面和侧面即为该剃刀刀头的顶面和侧面，平滑工整，贴肤，则在切割毛发时，该剃刀刀头以定刀的顶面和/或靠近顶面的侧面贴着皮肤移动，切割面能够全方位的贴着皮肤进行切割，切割效果好，能够很方便的切割身体一些下凹的部位，而且与皮肤的接触面为圆滑过渡的定刀的顶面和/或靠近顶面的侧面，使得剃刀刀头能够顺滑的在皮肤表面滑动，剃毛舒适性好。
2、本发明中定刀和定刀架形成类似皮鼓结构，定刀架为鼓身，定刀为蒙在鼓身上的拉紧的鼓皮，由于皮鼓的鼓皮有预拉力的原理，所述定刀绷紧在定刀架上，使定刀在不需要额外精密加工的前提下获得非常平整的和动刀接触的切割工作面，工艺简单，加工方便，零件制造成本低；另外，避开定刀的刚度要求，定刀的厚度可以做到其它工艺结构无法实现的超薄，所述定刀厚度h可以做到0<h<0.08mm的范围内，使剃毛时可以忽略定刀的厚度的影响，可以一次性的使体毛切除得比较干净。
3、本发明中位于左右两侧上的进毛孔为在左右方向上从外侧向内侧内凹的峡口结构，该峡口结构由连续顺滑曲线组成，且从外侧到中部由宽到窄，从中部到内侧再由窄变宽，其外侧入口处的宽度为L1,中部最窄处的宽度为L2，相对应的切割齿位于最窄处的内侧；该 峡口结构切割产生的初始位置也即峡口结构对应切割齿的外边缘处的位置，该切割产生的初始位置处的宽度为L3，从中部最窄处到对应切割齿的外边缘处的深度为L4，从外侧入口处到对应切割齿的外边缘处的深度为L5，满足如下关系式：L1>L3>L2，且0.1mm≤L2≤0.3mm，0.1mm≤L4≤1mm，L5≤1.2mm，优选范围0.2mm≤L4≤0.4mm，L5≤1.0mm，则该进毛孔既方便进毛，在毛发进入后又可阻止毛发跑出去，既起到很好的切割效果，同时在移动切割时，在窄处可将肉挤出去，防止皮肤接触切割产生的初始位置处高速运动的动刀。
4、本发明中所述定刀的顶面和左右两侧面分别成锐角，且顶面和左右两侧面之间形成有圆滑过渡的倒角，所述倒角的高度D<1.0mm，使左右两侧的定切割齿形成一个利于梳理毛发的梳齿结构，导毛进毛效果好，提高切割效果。
5、本发明中往复式剃刀刀头的制造方法，工艺简单，制造成本低，该剃刀刀头的顶面和靠近顶面的侧面由一个整体的定刀拉伸后向下包裹而成，平滑工整，贴肤性好，而且避免对定刀较高刚度要求，使定刀的厚度可以做到其它工艺结构无法实现的超薄，使剃毛时可以忽略定刀的厚度的影响，可以一次性的使体毛切除得比较干净。
6、本发明中所述定刀的厚度为h，满足：0<h≤0.08mm，采用超薄柔性金属薄片，使得体毛的切除更加的彻底洁净。
7、本发明中动刀和定刀架之间设有能将动刀压紧在定刀上的弹性压件，使得体毛切除更加容易，更显往复式剃刀刀头锋利。
【附图说明】
图l是本发明一种往复式剃刀刀头的爆炸图；
图2是本发明一种往复式剃刀刀头的结构示意图；
图3是本发明一种往复式剃刀刀头的底部结构示意图；
图4是本发明中定刀拉伸和弯折的原理图；
图5是该刀头在未安装定刀状态时的结构示意图；
图6是本发明一种往复式剃刀刀头的顶部视图；
图7是沿图6中A-A方向的剖视图；
图8是顶面为弧面结构的刀头沿图6中B-B方向的剖视图；
图9是顶面为弧面结构的定刀和对应的定刀架的爆炸图；
图10是顶面为平面结构的定刀和对应的定刀架的爆炸图；
图11是顶面为平面结构的刀头沿图6中B-B方向的剖视图；
图12是左右两侧的进毛孔的结构示意图。
【具体实施方式】
下面结合附图对本发明作进一步描述：
如图1至图12所示的一种往复式剃刀刀头，包括定刀1和用于支撑并固定定刀1的定刀架2,所述定刀1为具有柔韧性的柔性金属薄片，所述定刀架2为盆形支架，所述定刀1以定刀架2的盆口边缘为支撑，所述定刀1四周向下弯折包裹在定刀架2四周的盆壁外侧上并使定刀1的顶面和靠近顶面的侧面圆滑过渡，所述定刀1和定刀架2之间形成切割内腔10，所述定刀1上设有供体毛进入切割内腔10的进毛孔11，进毛孔11的侧壁形成切割边缘，所述切割内腔10中位于定刀1下方设有能相对定刀1前后往复运动进而切断进毛孔11 内的体毛的动刀3，所述动刀3上设有与进毛孔11相对应的并用于切割体毛的切割齿31，所述往复式剃刀刀头还包括穿过定刀架2底部将动刀3与电动剃刀的动力装置连接的传动部件4。
因所述定刀1为柔性金属薄片，并通过定刀架2四周盆壁的支撑，利用柔性金属薄片自身的柔性和韧性，可将定刀1向四周拉伸，在一定外力作用下将定刀1四周向下弯折、拉紧、贴在定刀架2四周的盆壁外侧上，并通过焊接或者铆接将定刀1绷紧固定在定刀架2的盆壁上，使定刀1的顶面和靠近顶面的侧面圆滑过渡，将定刀架2的上端和盆口从上往下包裹起来，形成类似皮鼓结构，该定刀1的顶面和侧面即为该剃刀刀头的顶面和侧面，平滑工整，贴肤。则在切割毛发时，该剃刀刀头以定刀1的顶面、靠近顶面的侧面、或者顶面和侧面二者同时贴着皮肤移动，切割面能够全方位的贴着皮肤进行切割，切割效果好，能够很方便的切割身体一些下凹的部位，而且与皮肤的接触面为圆滑过渡的定刀1的顶面、靠近顶面的侧面或者是两者同时接触皮肤，使得剃刀刀头能够顺滑的在皮肤表面滑动，剃毛舒适性好。
另外，定刀1和定刀架2形成类似皮鼓结构，定刀架2为鼓身，定刀1为蒙在鼓身上的拉紧的鼓皮，由于皮鼓的鼓皮有预拉力的原理，所述定刀1绷紧在定刀架2上，使定刀1在不需要额外精密加工的前提下获得非常平整的和动刀3接触的切割工作面，工艺简单，加工方便，零件制造成本低；另外，避开定刀1的刚度要求，定刀1的厚度可以做到其它工艺结构无法实现的超薄，所述定刀1厚度h可以做到0<h<0.08mm的范围内，使剃毛时可以忽略定刀1的厚度的影响， 可以一次性的使体毛切除得比较干净。
所述定刀架2的左右盆壁和前后盆壁之间设有使左右盆壁和前后盆壁圆滑过渡连接的圆角22，便于定刀1往下弯折包覆，使定刀1的四周圆弧过渡，提高切割的舒适性。
所述进毛孔11可以均匀设在定刀1的左侧，也可以均匀设在定刀1的右侧，也可以在定刀1的左右两侧都设置，相邻两个进毛孔11之间形成定切割齿12，所述定刀架2的左右盆壁上设有与进毛孔11相对应并能供体毛进出切割内腔10的进毛槽21，通过进毛槽21既可以进毛，在剃毛完成后，也可以用户清理掉出毛发。当然，所述定刀架2上还可以另外设有用于供切断在切割内腔10中的毛发掉出的掉毛孔23，以更加方便的清理掉毛发。
所述定刀1的顶面和左右两侧面分别成锐角，且顶面和左右两侧面之间形成有圆滑过渡的倒角R1，所述倒角R1的高度D<1.0mm，导毛进毛效果好，提高切割效果。
位于左右两侧上的进毛孔11为在左右方向上从外侧向内侧内凹的峡口结构，如图12所示，该峡口结构由连续顺滑曲线组成，且从外侧到中部由宽到窄，从中部到内侧再由窄变宽，其外侧入口处的宽度为L1,中部最窄处的宽度为L2，相对应的切割齿31位于中部最窄处的内侧；该峡口结构切割产生的初始位置也即峡口结构对应切割齿31的外边缘处的位置，该切割产生的初始位置处的宽度为L3，满足如下关系式：L1>L3>L2，且0.1mm≤L2≤0.3mm，入口处宽方便进毛，中部窄而内侧宽，可阻止毛发进入后再跑出，同时在移动切割时，在 窄处可将从外侧入口处进入的肉挤出去，防止皮肤接触切割产生的初始位置处高速运动的动刀。
如图12，该峡口结构从中部最窄处到对应切割齿31的外边缘处的深度为L4，且0.1mm≤L4≤1mm，防止皮肤在挤压下变形有一部分在中部最窄处往内侧凸出时，切割齿31切到皮肤，优选范围0.2mm≤L4≤0.4mm，既起到安全防护，又能很好地保证切割到毛发；该峡口结构从外侧入口处到对应切割齿31的外边缘处的深度为L5，L5≤1.2mm，优选范围L5≤1.0mm，保证毛发进入的深度，将毛发导入切割，同时也便于控制该峡口结构的深度，保证定切割齿12的结构强度。
所述定刀1的中部还可以具有进毛孔11，所述动刀3在中部相对应的设有切割齿31，以便多方位的切割毛发。
所述定刀架2的左右盆壁和前后盆壁在盆口处等高，所述定刀1的顶面为平面，所述动刀3的顶面为与定刀1的底面相配合的平面，实现平面切割，如图10和图11。
当然，如图8和图9，所述定刀架2的前后盆壁还可以高于左右盆壁，且前后盆壁的顶部为弧形结构并与左右盆壁圆滑过渡，所述定刀1的顶面为与前后盆壁相对应的弧面，所述动刀3的顶面为与定刀1的底面相配合的弧面，实现弧面切割，优选地，当定刀1的顶面为弧面结构时，所述定刀1的中部具有进毛孔11，动刀3的中部对应有切割齿31，从而能够更好的切割身体下凹部位的剃毛。
所述传动部件4包括与动刀3固定连接的动刀支架41和与电动 剃刀的动力装置连接的的驱动座42，所述动刀3和定刀架2之间设有能将动刀3压紧在定刀1上的弹性压件5，通过弹性压件5将动刀3向上推压，使动刀3和定刀1贴紧并形成预压力，保证往复式剃刀刀头切除体毛的锋利性。
所述定刀架2底部固定有用于支撑动刀支架41并导引动刀支架41前后往复运动的滑动支撑块6，所述滑动支撑块6可采用与定刀架2一体注塑成型的方式固定在定刀架2上，如图8和图11所示。
所述定刀1和定刀架2采用能焊接的金属材料制成，以便定刀1从四周向下弯折的侧面焊接在定刀架2四周的盆壁上。
所述定刀架2为盆口大、盆底小的盆形结构，则定刀架2四周的盆壁以盆口为基点，从上到下往内缩进，以便定刀1固定在盆壁上后，其边缘缩入在该剃刀刀头顶部的下方内侧，避免接触皮肤。
一种制造上述的往复式剃刀刀头的方法，包括以下步骤：
D、按设计制作好展开状态的定刀1，以及盆形结构的定刀架2；
E、将动刀3与传动部件4连接并安装在定刀架2内，如图5，其中动刀3和动刀支架41固定连接后从盆口放入定刀架2内，驱动座42从定刀架2的盆底上的通孔与动刀支架41连接后并置于定刀架2的底部下方；
F、将定刀1向四周拉伸，以定刀架2的盆口边缘为支撑，在一定外力作用下将定刀1四周向下弯折、拉紧、贴在定刀架2四周的盆壁外侧上，并通过焊接或者铆接将定刀1绷紧固定在定刀架2的盆壁上，使定刀1的顶面和靠近顶面的侧面圆滑过渡，将定刀 架2的上端和盆口从上往下包裹起来，形成皮鼓结构。
为了使动刀3和定刀1贴紧并形成预压力，提高切割的锋利性，在上述步骤B中，可在定刀架2内装入弹性压件5并将其设于动刀3下方，通过弹性压件5将动刀3弹性顶起在定刀架2的盆口之上。则到了步骤C中，在定刀架2的盆口上包裹定刀1时，在将定刀1向四周弯折、拉紧并绷紧在定刀架2的盆壁上时，定刀1内侧贴着动刀3将动刀3往下推压，并在动刀3和定刀1之间并形成预压力。
该制造方法工艺简单，制造成本低，该剃刀刀头的顶面和靠近顶面的侧面由一个整体的定刀拉伸后向下包裹而成，平滑工整，贴肤性好，而且避免对定刀1较高刚度要求，使定刀1的厚度可以做到其它工艺结构无法实现的超薄，使剃毛时可以忽略定刀1的厚度的影响，可以一次性的使体毛切除得比较干净。

Claims (10)

  1. 一种往复式剃刀刀头，其特征在于：包括定刀(1)和用于支撑并固定定刀(1)的定刀架(2),所述定刀(1)为具有柔韧性的柔性金属薄片，所述定刀架(2)为盆形支架，所述定刀(1)以定刀架(2)的盆口边缘为支撑，所述定刀(1)四周向下弯折包裹在定刀架(2)四周的盆壁外侧上并使定刀(1)的顶面和靠近顶面的侧面圆滑过渡，所述定刀(1)和定刀架(2)之间形成切割内腔(10)，所述定刀(1)上设有供体毛进入切割内腔(10)的进毛孔(11)，所述切割内腔(10)中位于定刀(1)下方设有能相对定刀(1)前后往复运动进而切断进毛孔(11)内的体毛的动刀(3)，所述动刀(3)上设有与进毛孔(11)相对应的并用于切割体毛的切割齿(31)，所述往复式剃刀刀头还包括穿过定刀架(2)底部将动刀(3)与电动剃刀的动力装置连接的传动部件(4)。
  2. 根据权利要求1所述的一种往复式剃刀刀头，其特征在于：所述定刀架(2)的左右盆壁和前后盆壁之间设有使左右盆壁和前后盆壁圆滑过渡连接的圆角(22)。
  3. 根据权利要求1所述的一种往复式剃刀刀头，其特征在于：所述定刀架(2)上设有用于供切断在切割内腔(10)中的毛发掉出的掉毛孔(23)。
  4. 根据权利要求1所述的一种往复式剃刀刀头，其特征在于：所述定刀(1)和定刀架(2)采用能焊接的金属材料制成，且定刀(1) 从四周向下弯折的侧面焊接在定刀架(2)四周的盆壁上。
  5. 根据权利要求1至4中任一项所述的一种往复式剃刀刀头，其特征在于：所述进毛孔(11)均匀设在定刀(1)左侧和/或右侧，相邻两个进毛孔(11)之间形成定切割齿(12)，所述定刀架(2)的左和/或右盆壁上设有与进毛孔(11)相对应并能供体毛进出切割内腔(10)的进毛槽(21)。
  6. 根据权利要求5所述的一种往复式剃刀刀头，其特征在于：所述定刀(1)的顶面和左右两侧面分别成锐角，且顶面和左右两侧面之间形成有圆滑过渡的倒角(R1)，该倒角(R1)的高度D<1.0mm。
  7. 根据权利要求5所述的一种往复式剃刀刀头，其特征在于：左侧和/或右侧所述进毛孔(11)为在左右方向上从外侧向内侧内凹的峡口结构，该峡口结构由连续顺滑曲线组成，且从外侧到中部由宽到窄，从中部到内侧再由窄变宽，其外侧入口处的宽度为L1,中部最窄处的宽度为L2，相对应的切割齿(31)位于中部最窄处的内侧，该峡口结构对应切割齿(31)的外边缘的位置处的宽度为L3，从中部最窄处到对应切割齿(31)的外边缘处的深度为L4，从外侧入口处到对应切割齿(31)的外边缘处的深度为L5，满足如下关系式：L1>L3>L2，且0.1mm≤L2≤0.3mm，0.1mm≤L4≤1mm，L5≤1.2mm。
  8. 根据权利要求1至4中任一项所述的一种往复式剃刀刀头，其特征在于：所述定刀架(2)的左右盆壁和前后盆壁在盆口处等高，所述定刀(1)的顶面为平面，所述动刀(3)的顶面为与定刀(1)的底面相配合的平面。
  9. 根据权利要求1至4中任一项所述的一种往复式剃刀刀头，其特征在于：所述定刀架(2)的前后盆壁高于左右盆壁，且前后盆壁的顶部为弧形结构并与左右盆壁圆滑过渡，所述定刀(1)的顶面为与前后盆壁相对应的弧面，所述动刀(3)的顶面为与定刀(1)的底面相配合的弧面。
  10. 一种制造权利要求1所述的往复式剃刀刀头的方法，包括以下步骤：
    A、按设计制作好展开状态的定刀(1)；
    B、将动刀(3)与传动部件(4)连接并安装在定刀架(2)内；
    C、将定刀(1)向四周拉伸，以定刀架(2)的盆口边缘为支撑，在一定外力作用下将定刀(1)四周向下弯折、拉紧、贴在定刀架(2)四周的盆壁外侧上，并通过焊接或者铆接将定刀(1)绷紧固定在定刀架(2)的盆壁上，使定刀(1)的顶面和靠近顶面的侧面圆滑过渡，将定刀架(2)的上端和盆口从上往西包裹起来，形成皮鼓结构。
PCT/CN2021/091605 2020-04-24 2021-04-30 一种往复式剃刀刀头及其制造方法 WO2021213531A1 (zh)

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