CN112388680A - Razor blade - Google Patents

Abstract

The invention provides a razor blade, which comprises a blade and a cutter holder, wherein the blade is provided with a shearing part and a connecting part, the shearing part forms cutter teeth, the connecting part is connected with the cutter holder, the blade and the cutter holder are fixedly connected in a buckling mode, and at least part of the connecting part of the blade and the cutter holder is provided with elastic connection limiting. The razor blade solves the problem that the assembly degree is difficult to control in the blade assembly process, reduces the relative movement between the blade and the blade holder under the non-external force action caused by over-loose matching, avoids the jumping of the blade, ensures the stability of a shearing surface during shearing operation, forms an effective shearing surface between the movable blade and the stationary blade, and improves the shearing efficiency and the use sense.

Description

Razor blade

Technical Field

The present invention relates to a blade for a hair cutting (shaving) appliance.

Background

CN205238089U discloses a stationary blade and a blade set for application in a hair cutting appliance. The blade set comprises a stationary blade and a movable cutter blade, the movable cutter blade comprising a toothed leading edge, the movable cutter blade being movably arranged within a guide slot defined by the stationary blade such that, upon relative movement between the movable cutter blade and the stationary blade, the at least one toothed leading edge of the movable cutter blade cooperates with corresponding teeth of the stationary blade to enable cutting of hair caught therebetween in a cutting action. The movable cutter blade is restricted by the fixed blade and the holding portion. Generally, the movable knife needs to be fixed through a supporting seat, the movable knife and the supporting seat are connected and fixed in a buckling mode, the requirement on the size precision of the buckling connection position between the movable knife and the supporting seat is high, and if the clamping is too tight, the blade is easy to deform, so that the cutting effect is influenced; if the card is too loose, the defects of no cutting or non-ideal cutting (such as napping and jumping) and high noise in the shaving operation can occur, so that the production management is difficult.

Disclosure of Invention

In view of the above, the invention provides a razor blade which is not easy to pluck, has high cutting efficiency and low noise.

In order to achieve the purpose, the invention provides the following technical scheme:

a razor blade comprises a blade and a blade holder, wherein the blade is provided with a cutting part and a connecting part, the cutting part forms cutter teeth, the connecting part is connected with the blade holder, the blade and the blade holder are fixedly connected in a buckling mode, and at least part of the connecting part of the blade and the blade holder is elastically connected and limited.

Further, the blade or the blade holder is provided with an elastic structure, and the elastic structure has an elastic force perpendicular to the shearing direction, so that the blade and the blade holder are elastically connected.

Furthermore, one of the blade or the cutter holder is provided with a buckling groove, the other of the blade or the cutter holder is provided with a buckling part connected with the buckling groove, and the elastic structure is arranged in the buckling groove or the buckling part.

Furthermore, one of the blade or the cutter holder is provided with a positioning groove, the other of the blade or the cutter holder is provided with an elastic structure matched with the positioning groove, and the elastic structure is provided with an elastic part capable of accumulating elastic force in the vertical shearing direction.

Furthermore, one of the blade or the cutter holder is provided with a positioning groove, the other of the blade or the cutter holder is provided with an elastic structure matched with the positioning groove, and the elastic structure is made of an elastic material.

Furthermore, the connecting portion of blade includes two parallel arrangement's connecting wall, the shearing portion is connected between two connecting walls, the blade holder is connected with the buckle between the connecting wall, the locating slot forms the bottom at the connecting wall of blade, elastic construction sets up at the blade holder, the blade passes through the elastic support of locating slot on elastic construction.

Furthermore, the elastic structure is provided with a relatively convex protruding part, and the positioning groove is in elastic limit contact with the protruding part.

Furthermore, the elastic structure extends along the shearing direction, the elastic structure comprises a connecting end and an elastic supporting end, the connecting end is connected with the cutter holder, the elastic supporting end is far away from the connecting end, the protruding portion is located at the elastic supporting end, and the protruding portion protrudes relative to the elastic supporting end in the vertical shearing direction.

Furthermore, the blade is U-shaped in cross section in the vertical shearing direction, and the connecting part is connected between the two connecting walls in an arc shape.

Furthermore, the positioning groove is provided with an opening, a supporting part which is opposite to the opening and is connected with the elastic structure elastic support, and two groove side surfaces which are oppositely arranged and connected between the opening and the supporting part, wherein at least one groove side surface is an inclined surface so that the caliber of the positioning groove from the opening to the supporting part is gradually reduced.

Furthermore, an intermediate positioning structure is arranged between the cutter holder and the blade, and the intermediate positioning structure limits the relative displacement between the blade and the cutter holder along the shearing direction.

Further, at least part of the connecting part of the blade and the blade seat form plane fit along the shearing direction.

Furthermore, a supporting and limiting structure is arranged between the blade and the blade holder, and the supporting and limiting structure is provided with a plane which is in close contact with the blade or the blade holder, or the supporting and limiting structure and the part of the blade or the blade holder which is in close contact with the blade or the blade holder are in the same plane.

The invention has the beneficial effects that: the razor blade solves the problem that the assembly degree is difficult to control in the blade assembly process, reduces the relative motion between the blade and the blade holder under the non-external force action caused by over-loose matching, avoids the jumping of the blade, ensures the stability of a shearing surface during shearing operation, ensures that an effective shearing surface is formed between the movable blade and the stationary blade, and improves the shearing efficiency and the use sense.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of a razor blade in accordance with the present invention;

FIG. 2 is an exploded perspective view of a razor blade in accordance with the present invention;

FIG. 3 is an enlarged view taken at A in FIG. 2, showing a detailed state of the elastic structure;

fig. 4 is an enlarged view of B in fig. 2, showing a detailed state of the positioning groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention will be further described with reference to the accompanying drawings.

The invention provides the following technical scheme:

referring to fig. 1-4, preferred embodiments of razor blades according to the present invention are shown. Specifically, the razor blade comprises a blade 1 and a blade holder 2, the blade 1 is provided with acutting part 11 and a connectingpart 12, thecutting part 11forms cutter teeth 3, the connectingpart 12 is connected with the blade holder 2, the blade 1 and the blade holder 2 are fixedly connected in a buckling mode, and at least part of the connectingpart 12 of the blade 1 and the blade holder 2 is provided with elastic connection limiting. The form of thecutter teeth 3 is not limited. Thecutter teeth 3 may be formed only in thecutting portion 11, or thecutter teeth 3 may be formed in both thecutting portion 11 and the connectingportion 12; of course, it is also possible to provide thecutting tooth 3 only on the connectingportion 12 according to actual requirements, that is, it is not necessary to provide thecutting tooth 3 on thecutting portion 11, which is only a general name for each portion of the blade 1, and no limitation is therefore made.

The blade 1 and the tool holder 2 are fixedly connected in a buckling manner, if the buckling structure is arranged too tightly, local deformation (for example, concave-convex deformation or warping) of the blade 1 is easily caused at the joint of the buckle due to too dead clamping (too large mutually matched acting force between the blade 1 and the tool holder 2), so that the shaving sharpness is abnormal, the local temperature rise of the blade 1 is too large, a user feels unsatisfactory in the shaving process, the shaving effect is poor, and the blade 1 is permanently deformed and cannot be recovered after long-term use; on the contrary, if the snap-fit over-feeding is performed, the blade 1 is prone to shaking due to the dragging of hairs and the interaction between the blades during the cutting operation, and noise is generated, and the shaking (or shaking) also increases the temperature rise of the blade 1. The term "elastic connection limit" means that the connection between the cutting insert 1 and the tool holder 2 is elastic, for example, an elastic material may be disposed at the connection (limit contact portion) between the cutting insert 1 and the tool holder 2, or anelastic structure 8 may be disposed at the connection between the cutting insert 1 and the tool holder 2, and the elastic material or theelastic structure 8 is required to provide an elastic connection between the cutting insert 1 and the tool holder 2 in a continuous tight state. After setting up like this, the buckle cooperation between blade 1 and the blade holder 2 can be the state of loose fit, then forms spacingly through being connected between this kind of elastic connection blade 1 and the blade holder 2, ensures that the too tight state of buckle can not appear again when blade 1 can hug closely the cooperation with blade holder 2. A buckling opening is formed between the blade 1 and the tool apron 2, and in order to avoid over-tight buckling, a relative moving gap is formed between the blade 1 and the tool apron 2 at the position where the buckling is connected; moreover, generally, such a movement gap is not parallel to the movement direction of the insert 1, and therefore, in order to compensate for the relative movement between the insert 1 and the holder 2 due to the snapping allowance, the elastic force of theelastic structure 8 in the present invention at least has an elastic component for limiting the relative movement therebetween. For example, taking the blade 1 shown in fig. 1 as an example, the blade 1 actually extends along the moving direction of the blade 1 when in use, and the blade 1 and the tool holder 2 are connected by a snap fit and then have a snap fit allowance in the direction perpendicular to the moving direction of the blade 1, so that at this time, theelastic structure 8 is required to have an elastic force perpendicular to the moving direction, so that the relative free movement between the blade 1 and the tool holder 2 is elastically limited, and the relative movement between the blade 1 and the tool holder 2 under the action of a non-external force (the relative acting force of another blade 1 and the acting force of hair) caused by over-loose matching is reduced, thereby avoiding the bounce of the blade 1, ensuring the stability of the shearing surface during shearing operation, ensuring that an effective shearing surface is formed between the moving blade and the stationary blade, and improving the shearing efficiency and the use sense.

Furthermore, it is emphasized that the razor blade according to the invention does not limit the scope of application of the blade, namely: whether the blade 1 is a moving blade or a stationary blade is not limited; the specific form of the blade 1 is not limited, and may be a sheet structure (doctor blade), a U-shaped structure, a circular knife, or the like; the movement state of the blade 1 is not limited, and may be, for example, a moving type, a rotating type, or the like. In the blade 1 shown in the drawing of this embodiment, taking the blade 1 as a movable blade as an example, the blade 1 is U-shaped, that is, the cross section of the blade 1 in the vertical shearing direction is U-shaped, specifically, the connectingportion 12 of the blade 1 includes two connectingwalls 13 arranged in parallel, and the connectingportion 12 is connected between the two connectingwalls 13 in an arc shape. The middle of the cutter holder 2 is provided with a connecting seat 9, the connecting seat 9 is usually connected with a power output end, and the movable cutter can be driven by a power source to perform reciprocating translation to trim hair. Theshearing part 11 is connected between the two connectingwalls 13, and the tool holder 2 is in snap connection with theconnecting walls 13.

It is to be emphasized that: theelastic structure 8 has an elastic force perpendicular to the shearing direction, so that the blade 1 and the tool holder 2 form an elastic connection, wherein the elastic force may be theelastic structure 8 formed by an elastic material, that is, the elastic force itself is because theelastic structure 8 is made of an elastic material, the elastic material may be TPE, TPR, etc., theelastic structure 8 may be locally disposed between the blade 1 and the tool holder 2, or theelastic structure 8 may be disposed between the blade 1 and the tool holder; besides, the elastic force may be generated by theelastic structure 8 itself accumulating a certain elastic force due to the structural design so as to maintain the elastic limit connection between the cutting insert 1 and the tool holder 2, for example, theelastic structure 8 is designed to have flexibility, elastic legs, an arch shape, a hemisphere, etc. so as to accumulate the elastic force so as to enable the cutting insert 1 and the tool holder 2 to abut against each other.

The positioning of theelastic structure 8 is illustrated below:

in specific implementation, theelastic structure 8 may be disposed at a position where the insert 1 is snap-connected to the holder 2: one of the blade 1 or the tool holder 2 is provided with abuckling groove 4, the other one of the blade 1 or the tool holder 2 is provided with abuckling part 10 connected with thebuckling groove 4, and theelastic structure 8 can be arranged in thebuckling groove 4 or thebuckling part 10. In the drawings shown in this embodiment, thefastening groove 4 is formed in the blade 1, thefastening portion 10 is formed in the blade holder 2, thefastening portion 10 is a protruding fastening protrusion (such as a locking pin, a hook-shaped structure, or a spring piece) disposed on the blade holder 2, when theelastic structure 8 is disposed in thefastening groove 4, it is preferable that the material of the groove sidewall contacting with thefastening portion 10 is an elastic material to form theelastic structure 8, and the specific form of theelastic structure 8 is not limited, for example, a protrusion or the like may be disposed on a surface cooperating with thefastening portion 10. When theelastic structure 8 is disposed in thelatch portion 10, a portion of thelatch portion 10 contacting with thelatch groove 4 may be configured to have elasticity, for example, at least the contacting portion is made of an elastic material, or thelatch portion 10 is directly configured as theelastic structure 8, for example, thelatch portion 10 is a structure having a flexible force and protruding relative to the tool holder 2.

In practical implementation, theelastic structure 8 may also be disposed at a position where the insert 1 is not in snap fit with the holder 2, for example: one of the blade 1 or the tool holder 2 is provided with apositioning groove 5, the other one of the blade 1 or the tool holder 2 is provided with anelastic structure 8 matched with thepositioning groove 5, and theelastic structure 8 is provided with anelastic part 7 capable of accumulating elastic force in the vertical shearing direction. Theelastic part 7 may be made of an elastic material, or theelastic part 7 may be provided in a form capable of accumulating an elastic force, such as having features of a dome shape, a warp shape, a spiral shape, and the like. In the present embodiment, in particular as follows, thepositioning slot 5 is formed at the bottom of the connectingwall 13 of the blade, theelastic structure 8 is arranged on the tool holder 2, and the blade 1 is elastically supported on theelastic structure 8 through thepositioning slot 5. Theelastic structures 8 are arranged at the positions of two sides of the tool apron 2 corresponding to the connectingwalls 13, and 4 groups of theelastic structures 8 are arranged in a pairwise opposite mode. In specific implementation, at least oneelastic structure 8 is provided, and the number of the elastic structures is not limited.

As shown in fig. 3, theelastic structure 8 has a relatively protrudedprojection 15, and thepositioning slot 5 is elastically in limit contact with theprojection 15. Theelastic structure 8 extends along the shearing direction, theelastic structure 8 comprises a connecting end and an elastic supporting end, the connecting end is connected with the tool apron 2, the elastic supporting end is far away from the connecting end, the protrudingportion 15 is located at the elastic supporting end, and the protrudingportion 15 protrudes relative to the elastic supporting end in the vertical shearing direction and then elastically abuts against the top wall of the positioning groove 5 (the top and the bottom are based on the direction shown in fig. 2).

Of course, theelastic structure 8 may also be disposed at a position where the insert 1 is not snap-fitted with the holder 2, and the material of theelastic structure 8 is an elastic material. In this case, the elastic force of theelastic structure 8 may be formed by compression of the material itself, or may be formed by the structural design of theelastic structure 8 itself as described above, or may be both of them, that is, at least a part of the elastic material is adopted to increase the elastic force on the structural design of theelastic structure 8 itself, and at the same time, the friction force between the insert 1 and the holder 2 can be increased, and the relative movement between the two can be reduced.

Further, as shown in fig. 1 and 2, thepositioning slot 5 has anopening 51, a supportingportion 52 opposite to theopening 51 and elastically supported and connected to theelastic structure 8, and twoslot sides 53 opposite to theopening 51 and connected between the opening and the supportingportion 16. Thegroove side 53 is inclined, so that the aperture of thepositioning groove 5 is reduced by the size component from the opening to the supportingpart 16. In specific implementation, at least one of the groove side surfaces 53 may be an inclined surface so as to gradually reduce the aperture of thepositioning groove 5 from the opening to the supportingportion 16. After setting up like this,constant head tank 5 can form taper fit withelastic construction 8, and final assembled relation between the two is interference fit connection, is difficult for the pine to take off. When the cutter holder is specifically implemented, the material of the cutter holder 2 usually mainly comprises a plastic injection molding part, considering the influences of deformation and the like of the plastic injection molding part along with the extension of the service time, the structural design of the conical surface also reserves a space for the deformation allowance of the plastic injection molding part, the shearing effect cannot be influenced due to the fact that the local assembly is too tight due to the fact that the size of the plastic part is increased or the plastic part is deformed, the flatness of the blade 1 is higher, and the blade is more comfortable to use.

In this embodiment, thepositioning groove 5 is provided at the bottom end of the blade 1 for example, and in specific implementation, the position where thepositioning groove 5 is provided is not limited, and may be provided at a position close to the top end of the blade 1, for example.

In order to reduce the relative movement between the blade 1 and the tool holder 2 along the moving direction of the blade 1, an intermediate positioning structure 17 is further arranged between the tool holder 2 and the blade 1, and the intermediate positioning structure 17 can limit the relative displacement between the blade 1 and the tool holder 2 along the shearing direction. Specifically, the intermediate positioning structure 17 includes alimit groove 6 formed in the insert 1 or the insert seat 2, and alimit block 14 formed in the insert seat 2 or the insert 1. As shown in fig. 1 and 2, in this embodiment, the limitinggroove 6 is formed at the bottom of the blade 1, the limitingblock 14 is disposed on the blade holder 2, and the limitingblock 14 is inserted into the limitinggroove 6 to limit the movement of the blade 1 and the blade holder 2 through the connection therebetween.

In order to improve the fit between the blade 1 and the holder 2 after assembly and prevent the shearing effect from being affected by the partial bending (concave-convex deformation) of the blade 1, in a specific implementation, a plane fit is formed at least partially between the connectingportion 12 of the blade 1 and the holder 2 along the shearing direction. The term "plane contact" means that the contact part of the blade 1 and the blade holder 2 is in plane contact in a contact state, so that the blade 1 does not bend and deform due to local stress concentration under the supporting and limiting of the blade holder 2; the 'plane joint is formed at least partially along the shearing direction' means that the plane joint forms a state extending along the shearing direction, so that certain guide and limit can be formed in the moving direction of the blade 1, the degree of matching between the blade 1 and the cutter holder 2 can be ensured, and the phenomenon of cutter jump of the blade 1 during cutting is effectively avoided.

Further, a supporting and limiting structure is arranged between the blade 1 and the blade holder 2, and the supporting and limiting structure can be formed on the blade 1 or the blade holder 2. The supporting and limiting structure is provided with a plane which is in close contact with the blade 1 or the tool holder 2, or the supporting and limiting structure and the part of the blade 1 or the tool holder 2 which is in close contact with each other are in the same plane. The flat surface in close contact may be provided at a plurality of positions extending in the moving direction of the blade 1 at intervals, or may be provided at only one position. The material at the plane may be an elastic material. The supporting and limiting structure can also be a plurality of local convex structures, and the points of the convex structures, which are attached to the blade 1 or the tool holder 2, are on the same plane. Because the thickness of the blade 1 is only 0.5 silk meter generally, after the arrangement, the flatness of the blade 1 after installation is ensured, the straightness of the blade 1 is improved, and particularly under the condition of the U-shaped knife, the flatness of the shearing surface is improved, the noise is low, the shearing effect is better, and the shearing efficiency is better. In this embodiment, the support and limit structure is two parallel connectingwalls 13, and the connectingwalls 13 are in planar contact with the tool holder 2.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (13)

Translated fromChinese

1.一种剃毛刀刀片，其特征在于：包括刀片与刀座，所述刀片具有剪切部与连接部，所述剪切部形成刀齿，所述连接部与刀座连接，所述刀片与刀座通过卡扣的方式连接固定，所述刀片的连接部与刀座之间至少部分具有弹性式连接限位。1. A razor blade, characterized in that: comprising a blade and a knife seat, the blade has a shearing portion and a connecting portion, the shearing portion forms a knife tooth, and the connecting portion is connected with the knife seat, the The blade and the blade seat are connected and fixed by means of snaps, and at least a part of the connection part of the blade and the blade seat has an elastic connection limit.2.根据权利要求1所述的剃毛刀刀片，其特征在于：所述刀片或者刀座具有弹性结构，所述弹性结构具有垂直剪切方向的弹性力使得刀片与刀座形成弹性式连接。2 . The razor blade according to claim 1 , wherein the blade or the blade holder has an elastic structure, and the elastic structure has an elastic force perpendicular to the shearing direction so that the blade and the blade holder form an elastic connection. 3 .3.根据权利要求2所述的剃毛刀刀片，其特征在于：所述刀片或刀座的其中之一设置卡扣槽，所述刀片或刀座的其中另一个设置与卡扣槽连接的卡扣部，所述弹性结构为设置在卡扣槽或者卡扣部。3. The razor blade according to claim 2, characterized in that: one of the blades or the knife holder is provided with a snap groove, and the other of the blades or the knife block is provided with a snap groove connected to the snap groove The buckle part, the elastic structure is arranged in the buckle groove or the buckle part.4.根据权利要求2所述的剃毛刀刀片，其特征在于：所述刀片或者刀座的其中之一设置定位槽，所述刀片或者刀座的其中另一个设置与定位槽配合的弹性结构，所述弹性结构在垂直剪切方向具有一个能够积蓄弹性力的弹性部。4. The razor blade according to claim 2, wherein one of the blades or the blade holder is provided with a positioning groove, and the other one of the blades or the blade holder is provided with an elastic structure matched with the positioning groove , the elastic structure has an elastic part which can store elastic force in the vertical shearing direction.5.根据权利要求2所述的剃毛刀刀片，其特征在于：所述刀片或者刀座的其中之一设置定位槽，所述刀片或者刀座的其中另一个设置与定位槽配合的弹性结构，所述弹性结构的材料为弹性材料。5. The razor blade according to claim 2, wherein one of the blades or the blade holder is provided with a positioning groove, and the other one of the blades or the blade holder is provided with an elastic structure matched with the positioning groove , the material of the elastic structure is elastic material.6.根据权利要求4或5所述的剃毛刀刀片，其特征在于：所述刀片的连接部包括两个相平行设置的连接壁，所述剪切部连接在两个连接壁之间，所述刀座与连接壁之间卡扣连接，所述定位槽形成在刀片的连接壁的底部，所述弹性结构设置在刀座，所述刀片通过定位槽弹性的支撑在弹性结构上。6. The razor blade according to claim 4 or 5, wherein the connecting portion of the blade comprises two connecting walls arranged in parallel, and the shearing portion is connected between the two connecting walls, The knife seat and the connecting wall are snap-connected, the positioning groove is formed at the bottom of the connecting wall of the blade, the elastic structure is arranged on the knife seat, and the blade is elastically supported on the elastic structure through the positioning groove.7.根据权利要求6所述的剃毛刀刀片，其特征在于：弹性结构具有一个相对凸出的凸出部，所述定位槽与凸出部弹性限位接触。7 . The razor blade according to claim 6 , wherein the elastic structure has a relatively protruding protruding portion, and the positioning groove is in elastic limit contact with the protruding portion. 8 .8.根据权利要求7所述的剃毛刀刀片，其特征在于：所述弹性结构沿着所述剪切方向延伸，所述弹性结构包括连接端与弹性支撑端，所述连接端与刀座连接，所述弹性支撑端远离所述连接端，所述凸出部位于该弹性支撑端，凸出部在垂直剪切方向上相对弹性支撑端凸出。8 . The razor blade according to claim 7 , wherein the elastic structure extends along the shearing direction, the elastic structure comprises a connecting end and an elastic supporting end, and the connecting end and the blade seat connection, the elastic support end is away from the connection end, the protruding portion is located at the elastic support end, and the protruding portion protrudes relative to the elastic support end in the vertical shearing direction.9.根据权利要求6所述的剃毛刀刀片，其特征在于：所述刀片在垂直剪切方向的截面呈U型，所述连接部弧形的连接在在两个连接壁之间。9 . The razor blade according to claim 6 , wherein the cross section of the blade in the vertical shearing direction is U-shaped, and the connecting portion is connected in an arc shape between two connecting walls. 10 .10.根据权利要求4或5所述的剃毛刀刀片，其特征在于：定位槽具有一个开口、一个与开口相对的并与弹性结构弹性支撑连接的支撑部、两个相对设置并连接在所述开口与支撑部之间的槽侧面，其中至少一个槽侧面为倾斜面进而使得定位槽由开口到支撑部的口径逐渐缩小。10. The razor blade according to claim 4 or 5, wherein the positioning groove has an opening, a support portion opposite to the opening and elastically supported and connected with the elastic structure, and two oppositely arranged and connected to each other. The side surface of the groove between the opening and the support portion, wherein at least one side surface of the groove is an inclined surface, so that the diameter of the positioning groove gradually decreases from the opening to the support portion.11.根据权利要求1～5中任一项所述的剃毛刀刀片，其特征在于：所述刀座与刀片之间还设置中间定位结构，所述中间定位结构对在沿着剪切方向的刀片与刀座的相对位移进行限位。11. The razor blade according to any one of claims 1 to 5, wherein an intermediate positioning structure is further provided between the blade seat and the blade, and the intermediate positioning structure is positioned along the shearing direction. The relative displacement of the blade and the tool seat is limited.12.根据权利要求1～5中任一项所述的剃毛刀刀片，其特征在于：所述刀片的连接部与刀座之间至少部分沿着剪切方向形成平面贴合。12. The razor blade according to any one of claims 1 to 5, wherein the connecting portion of the blade and the blade seat form a plane fit at least partially along the shearing direction.13.根据权利要求1～5中任一项所述的剃毛刀刀片，其特征在于：所述的刀片与刀座之间具有支撑限位结构，所述支撑限位结构具有与刀片或者刀座紧贴接触的平面，或者所述支撑限位结构与刀片或者刀座紧贴接触的部分在同一平面内。13. The razor blade according to any one of claims 1 to 5, wherein a support limit structure is provided between the blade and the knife seat, and the support limit structure has a connection with the blade or the knife The seat is in close contact with the plane, or the supporting and limiting structure is in the same plane with the blade or the part that is in close contact with the knife seat.

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