CN113427525A

CN113427525A - Blade structure, blade unit, novel blade holder and novel shaving device

Info

Publication number: CN113427525A
Application number: CN202110650508.6A
Authority: CN
Inventors: 杨俊新
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-09-24

Abstract

The invention provides a blade structure, a blade unit, a blade holder and a shaving device, wherein the shape of a shaving blade is a polygon, at least one edge of the polygon can be used as a blade edge tip, the edge used as the blade edge tip is not a symmetrical edge of the polygon, and the polygon is at least a prism; or the shape of the razor blade only has the blade part without a matrix; the blade and the hollow frame support may at least form a blade unit. Novel blade cartridges and novel shaving devices employing blade units.

Description

Blade structure, blade unit, novel blade holder and novel shaving device

Technical Field

The present invention relates to the field of hair removal technology, in particular to a blade structure, a blade unit, a novel blade holder and a novel shaving apparatus; the invention is particularly applicable in the field of direct contact skin shaving devices.

Background

Hair removal devices are special cutting tools for beard, sweat hair and hair, which are distinguished from slicing and the like, and include, according to blade classification, three main categories, namely, shell-less blades, framed/shelled blades and shrouded blades with stationary and stationary blades; the power forms include manual and electric. They can also be classified according to the form of contact of the blade edge with the skin, and single-blade and sheathed blades can also be referred to as wet razors; the stationary and stationary knives are referred to as dry razors. The thickness of the common razor blade for directly contacting the skin in the prior art is about 0.079mm, the width of the blade is in millimeter level, the shape of the blade edge is often described as a wedge-shaped configuration, the tip of the blade edge is mostly extended and intersected in the middle of two inclined planes, and the minimum radius size/thickness of the tip of the blade edge is in nanometer level; the size of the cutting edge is only a small part of the whole blade, the shape of the blade base body or the blade body is in a linear flat plate shape and a bent plate-shaped inverted L shape, the blade is a polyhedron taking a central plane opposite to the tip of the cutting edge as a symmetrical plane, and the tip of the cutting edge is on the central plane vertical to the opposite surface of the tip of the cutting edge or a plane parallel to the side surface of the blade as a symmetrical plane; the relative position relationship between the blade and the beard or skin contact surface is a key factor influencing the shaving effect; the plane of the skin contact surface or tangency formed by the guard, lubricating cap and two side edges of the cartridge is generally defined as the shaving geometric reference plane of the design reference, which is also mostly perpendicular or approximately perpendicular to the plane of the beard; the skin contacting surface may also be referenced to the influence of the blade tip; although the skin-contacting surface is not a strictly flat surface, it is also a value for design reference for the design; the old flat blade is basically parallel to the beard because the skin supporting surface is very small, the included angle between the skin contact side of the safety blade and the skin supporting surface or the included angle between the skin contact side of the safety blade and the beard is preferably 17 degrees, and the blade can be considered to be parallel to the beard by the electric shaver blade; common blade configurations and blade holder configurations can be reported in reference to 2016, month 11, day 10, application No.: 201680065311.3 razor blade; and 2017, 8, month and 30, application number: 201780046138.7 razor blade holder and method of assembly; blade materials are usually metals and metal alloys, and brittle materials are tried to be used for razor blade applications, for example, patent application No. 91101629.5 razor blade processing technology, which is 1991, 3 and 18, proposes that ceramic materials are used for manufacturing razor blades, semiconductor technology and process are mostly adopted for processing brittle materials such as ceramics and semiconductor materials, and processing technology and process of many non-brittle materials or plastic materials are not suitable for processing brittle materials; besides the continuous improvement of the material of the blade body, the structure of the blade and the structure of the frame shell also determine the functional effect of the shaving device due to the improvement of various connecting structures for multiple purposes; the blade housing serves three main functions: connecting the grip, supporting the stationary blade and supporting other auxiliary functional members; the existing practical blades are mostly inserted into the gaps of the longitudinal side surfaces and are assisted by other fixing structures. But there are also patent applications for different blade holding structures; the patent of No. 200680019427.X razor in 2006, No. 2 and No. 3 in 1988 and No. 88203267.4 circular razor blade in 2006, No. 5 and No. 31 in 2006, and the two patents propose to process round holes on a metal sheet, and the edges of the round holes are processed into blades, so that the razor blade is suitable for manual operation and electric operation; the processing of the round hole-shaped cutting edge is certain to be more complicated than a straight line, the processing of dozens of round hole-shaped cutting edges is also certain to be more complicated than the processing of several straight lines, the arrangement of the round hole arrays is complicated, the shaving efficiency of the round hole-shaped cutting edge blade is not only related to the arrangement of the round holes, but also related to the angle between the blade holder and the handle, the shaving efficiency of the round hole-shaped cutting edge blade is lower than that of a straight line, and the blade, the blade supporting part and the skin supporting part are integrated; 2/month 27, 2017, application No.: 201710108895.4 "razor blade holder and blade assembly; the shape of the patent is similar to that of the prior common blade bracket, especially the blade end fixing structure, the structure of the patent is similar to that of the prior common blade bracket, and the blade end fixing structure is formed by combining a plurality of discontinuous planes or discontinuous curved surfaces and is provided with a plurality of connecting structures; the application number is reported in 9/30 2010: 201080044396.X "shaving apparatus with safety razor blade unit", the blade angle can be adjusted from oblique to parallel to the beard by a mechanism; gill blade machining, assembly techniques and processes are said to be aerospace grade and the disclosures of the above patents are incorporated by reference as prior art. In summary, the smooth insertion of such thin blades into narrow gaps and the arrangement of such fine parts are technically difficult and costly precision machining operations. Rationalization of the efficiency, technical difficulty and cost of blade and assembly production is a common need. How to continuously improve the production selectivity and better cost control of the shaver; the desire to reduce the difficulty of production and to achieve the highest possible overall efficiency is always present.

Disclosure of Invention

A new blade structure is provided, and a new choice is provided for the optimization of reducing the technical difficulty of blade assembly and the manufacturing cost; the invention provides a blade structure, a novel blade unit structure, a novel blade holder and a shaving device.

A blade structure, it is shaving blade and is the polygon, the polygon has at least one edge that can be regarded as the cutting edge tip, the edge regarded as cutting edge tip is not the symmetrical edge of the polygon, the polygon is the prism at least; symmetry means that the edge as the tip of the blade is symmetrical if it is on the central vertical plane of the opposite plane; the included angle of at least one edge of the polygon body is an acute angle, and the edge with the acute angle can be used as a cutting edge; the included angle of the two planes forming the edge as the tip of the blade is preferably an acute angle, and the triangular prism may have two acute angles; such as two acute angles of 17 degrees; the polygonal shape is advantageous when the blade support is thin-plate shaped, in particular the blade is formed integrally with the plate-shaped frame; the angle adjustment of the contact surface between the blade and the skin can be adjusted not only through the shape structure of the blade and the blade supporting part, but also through the size of the included angle of the edge of the cutting edge of the blade; the stiffness of the polygon is larger than that of the thin sheet, which is convenient for processing and moving.

A blade structure is characterized in that only a blade edge part of a razor blade is provided; the common razor blade has a blade part and a base part, and the blade part and the base part have different shapes and structures; the knife edge is only a small part of a common blade and the shape of the knife edge is advantageous when the blade support is thin-plate shaped, in particular when the blade is formed integrally with the plate-shaped frame.

The preferred blade has two acute angles, the triangular prism blade has two equal acute angles, and the two acute angles can be different or equal; two acute angles may form two cutting edges, providing a variety of options for blade formation and retention.

The angle of the blade to the skin contacting surface is preferably adjusted by selecting the angle of the polygonal prism blade.

The preferred blade material is at least one of the types of metal, alloy, ceramic, semiconductor material, etc.

A blade unit, also a blade subassembly structure, also a cartridge/blade holder structure, comprising a skin support portion and at least one blade, either a blade unit employing a blade structure as claimed in any one of the preceding claims or a combination thereof, at least one of which forms a blade unit, the shaving blade being at least a prism or a blade portion; the skin supporting part is in a thin plate shape, such as a hollow frame, the supporting part comprises a skin supporting part and a blade supporting part, sometimes the skin contacting supporting part and the blade supporting part can be integrated in function, the skin contacting supporting part and the blade supporting part can be actually integrated, and the blade can be connected to the blade supporting part or the skin supporting part, such as in a manual shaver; at least one blade is arranged in the hollow frame supporting part, so that the included angle between the blade and the skin supporting surface or the included angle between the blade and the beard is guaranteed to be vertical or nearly vertical; the plate shape is generally a thin plate and comprises a plane thin plate and a curved thin plate, the curved thin plate is mostly a thin plate with large curvature, the thickness dimension of the thin plate can be in a micron scale or a millimeter scale, at least the skin contact side surface of the plate shape hollow frame skin supporting part is approximately provided with a continuous surface or contour, and the surface is generally a plane or a continuous curved surface with the same curvature; the blade is connected with the supporting part and comprises a fixed/non-movable connection, a movable connection and an elastic connection, the movable connection at least comprises a hole and a groove, and the blade connection can enable the blade to generate at least one motion form comprising static motion, sliding motion, swinging motion, rotation or a combination thereof; the shape of the blade support portion and the shape of the blade end portion are matched with each other, such as insertion fit and surface arrangement fit; when the skin supporting part is also a blade supporting part, at least one end of the blade can be connected to the surface of the plate-shaped frame supporting part, the surface comprises the upper surface, the lower surface or the inner side surface of one side of the frame, or two ends of the blade can be connected to the surface of the other side of the frame, and the surface comprises two ends of the blade which are fixed on the upper surface, the lower surface or the inner side surface of the other side of the frame for connection; the side surface of the blade can be connected with the inner side surface of the hollow frame supporting part; the blade and the hollow frame supporting part at least can form a blade unit; at least one connecting blade is arranged on the surface of a hollow integral frame supporting part without an intermediate connecting part; the blade is connected with the hollow frame supporting part to play a role in strengthening the integral strength, and other fixed connecting parts except the blade and the blade supporting part can be omitted in the frame; the blade fixing structure is not formed by a plurality of discontinuous planes or curved surfaces in the prior art; the hollow frame supporting part is formed by integral forming, assembly forming or combination thereof; the hollow frame supporting part is usually formed by thin plates, die casting or splicing, and the integral forming comprises punching, die injection molding or casting forming, such as punching, cutting, stamping, welding forming or die manufacturing; splicing or assembling to form a plurality of edges (plates, strips, belts and wires) by welding or bending/splicing to form a welding interface; the materials of the blade and the hollow frame supporting part can be common metals and alloys, and can also be ceramics, glass and semiconductor materials; the cross section of the hollow frame supporting part side can be a curve shape, a polygon shape or a combination thereof; the thickness of the different edge portions of the frame may be the same, different or a combination thereof, at least one of which, typically the thickness or shape of the opposite edges is the same; the thickness of different edges of the frame is the same as or different from the thickness of the blade or the combination of the thicknesses of the different edges of the frame and the blade; the hollow shaped support frame is firstly a frame or cradle of the blade, which may be a blade cartridge frame when the blade unit is acting as a blade cartridge/shaver head body; the frame is typically a sheet frame; if the blade is thin, a blade unit bracket can be arranged, and the bracket can be matched with the shape of the hollow frame supporting part; one or two longitudinal sides of the blade can be matched and fixed with at least one surface of the frame edge part, the blade and the supporting part are fixedly combined by adopting a welding, bonding, solution-solid or liquid-solid mode, a thin strip/plate or wire is adopted as the blade supporting part, the material of the thin strip/plate or wire can be various operable materials, the thin strip/plate or wire can be a hard body or a flexible body, and the thin strip/plate or wire can also be an elastic body; the contact form of the end/side surface of the blade and the support fixing part is at least one of point, line, surface or combination thereof; the blade can be processed to form a cutting edge in advance, and can also be processed to form a cutting edge after a blade unit is formed; the blades comprise single-edge blades and double-edge blades, and can also be integrally formed or separately formed blades, the shaving surfaces comprise single shaving surfaces and double shaving surfaces, and the shaving surfaces are symmetrical and asymmetrical; the shaving directions of the blades may be the same or different, such as the same, opposite, or opposite; simultaneously, the electric shaver also comprises at least one of the blade, the shaving direction and the shaving surface which are combined randomly; the four faces (sides and blade front and back) of the blade assembly may be part of the four sides of the blade mount/housing frame; after assembly of the blade assembly with the blade housing/base and addition of the guard and lubricant head, the blade assembly becomes a blade cartridge that is connected to the grip portion by a pivotal connection to become a complete razor.

The preferred plate-shaped hollow frame skin support serves as a blade support, and the blade is disposed on the surface of the plate-shaped hollow frame skin support, including the upper, lower and side surfaces.

The preferred plate-shaped hollow frame support is formed by at least one of integral forming, assembly forming or combination thereof; integral forming includes die making, injection molding, die cutting, 3D printing, additive manufacturing, subtractive processing, or cast forming, such as sheet die cutting, laser cutting, or die making; the thin plate/belt or wire assembly forming comprises the steps of welding forming or bending/splicing forming of a plurality of edges (plates, strips, belts and wires), and then forming after connection in a welding, bonding, welding, buckling, riveting, thread mode or combination thereof.

The preferable plate-shaped hollow frame supporting part is integrally formed, and at least one blade can be formed in the plate-shaped frame structure of the same thin plate; processing a thin plate to form a plate-shaped frame structure, wherein at least one blade can be processed in the same plate-shaped frame structure; the blades include strip and curved shapes, and the selection of the mode of processing the blade edge is a single bevel edge or a double bevel edge.

The surface shape of the preferred hollow frame supporting part is a continuous plane or a curved surface; generally planar or curved with large curvature; sometimes the surface shapes of the opposite sides are the same.

The optimal structure of the blade and the skin supporting surface or the blade supporting part ensures that the included angle between the blade and the beard is set to be vertical to the optimal structure, the blade comprises a blade base body which is vertical to the beard and a blade edge inclined plane which is vertical to the beard, and the blade edge of the blade can be divided into a single-inclined-plane blade edge and a double-inclined-plane blade edge; the attachment of the blade to the blade support portion provides a cutting edge that is approximately perpendicular to the beard.

The preferable blade setting and fixing mode adopts welding, bonding, welding, buckling, riveting, thread mode or combination thereof, and at least one mode is used for fixedly connecting the blade and the frame supporting part.

Preferred bonding, melt-fixing or liquid-fixing means are at least one of spray coating, injection molding, dip coating, photo-curing, thermal curing, 3D printing or a combination thereof; the melting-solidifying is to melt the material and solidify the material, and the liquid-solidifying is to apply liquid and solidify the material; the bonding, fusing or liquid-solid means comprises at least one of low melting point metals, ceramics, low melting point compounds, plastics, polymers, or combinations thereof.

Preferred welding includes at least one of high energy welding, induction welding, wave welding, plastic welding, ultrasonic welding, gas welding, contact welding, 3D printing, or combinations thereof; the high energy welding includes at least one of laser welding, plasma welding, electron beam welding, or a combination thereof.

The preferred blade unit may be provided with at least one of a housing attachment locating feature, a grip attachment feature, an auxiliary locating feature, or a combination thereof; the shell connecting and positioning structure comprises various structures such as bonding, welding, fusion welding, buckling, riveting, threads, magnetism, embedding and the like, for example, a fixing sheet is arranged on the edge of the frame in a punching way; the auxiliary positioning structure mainly adjusts the angle and position of the blade to be fixed; the connection form of the blade unit/frame and the holding part comprises at least one of magnetism, buckle, embedding or combination thereof; the connection mode of the blade holder and the holding part comprises at least one of single point, single edge, multiple edges or the combination thereof.

Preferred blade unit positioning features are formed by stamping, cutting, bonding, welding, fusing, snapping, riveting, threading, molding, wire cutting, etching, additive manufacturing, subtractive machining, or combinations thereof, forming at least one of the features; and determining an arranging tool die of the blade according to the design parameters of the blade.

The material of the hollow frame supporting part is preferably at least one of metal, plastic, polymer, ceramic, semiconductor material or the combination thereof; the blade side supporting and fixing part is made of at least one of metal, ceramic, glass, compound, plastic, polymer, semiconductor material or combination thereof; the supporting and fixing part on the side surface of the blade is an elastic thin belt/plate or line; the sheet/tape or wire comprises at least one of rigid and flexible or a combination thereof.

The preferred blade and the edge part of the supporting part of the hollow frame in the same direction have at least two blades, and at least one pair of blades are opposite; the blade unit has at least two blades which are not parallel; it is common for two adjacent blades to be non-parallel to facilitate removal of shaving debris.

The preferred blade unit has a bracket, which is a good choice when the blade has a thin sheet thickness, which is advantageous for the processing of the blade edge, but the structural strength is relatively small, so that it is often necessary to increase the strength; the surface of the bracket can be a plane or a curved surface; when the supporting part needs to be reinforced in rigidity and strength, the problem of adding a bracket can also be solved.

The thicknesses of different side parts of the frame are preferably the same or different or a combination of the thicknesses; the different sides comprise different sides of the polygon and parts of the curve at different opposite side positions; the different thicknesses of the long and short sides facilitate the mounting of the guard and the lubricator, and the thicknesses of the opposite sides are generally consistent.

The preferable blade comprises a single-bevel blade and a double-bevel blade, the blade is a blade with a single-side angle, and the other surface contacted with the skin is a plane; including the angle of the blade to the blade unit frame support surface and the angle of the blade unit frame support surface to the housing surface, which ultimately determine the angle of the blade to skin contact surface.

The preferred blade unit frame support portion perimeter frame cross-section is substantially at least one of curvilinear, circular, or polygonal, or a combination thereof; such as steel wires, flat wires with at least one side being planar or polygonal/prismatic.

The blades in the preferred blade unit can be either pre-cut into blades or fixed and cut; the cutting after fixing can be that the blade strip and the blade unit are fixed and then cut and separated; the blades in the blade assembly can be arranged in groups in advance or can be formed by adding single blades one by one.

A novel blade cartridge for a blade assembly employing at least one of the blade structures of any preceding claim, blade unit/blade assembly or combination thereof; only the edge part of the razor blade is arranged, or the razor blade is a polygon body, at least one edge of the polygon body can be used as the tip of the razor blade, the edge used as the tip of the razor blade is not a symmetrical edge of the polygon body, and the polygon body is at least a prism body; the inner side of the blade frame or the contact part of the blade seat and the end part of the blade is mutually matched in shape, the inner side of the blade seat is provided with at least one shape structure matched with the shape of the end part of the blade, the longitudinal end part of the blade can be placed in contact with the bottom surface of the matched shape, and the matched shape of the side edge of the blade frame is determined according to the designed gap size of the blade edge, the protruding amount of the blade edge and the angle of the blade; the blade holder can be a conventional shape structure and a structure adopting a plate-shaped hollow frame as the skin supporting part.

The skin supporting part is a plate-shaped hollow frame, at least one blade is arranged in the hollow frame supporting part, at least the skin contact side surface of the plate-shaped hollow frame supporting part is a continuous plane, a continuous curved surface or a combination thereof, at least one of the plate shapes is a plate shape generally, and comprises a plane thin plate and a curved surface thin plate, the curved surface thin plate is a large-curvature thin plate, the thickness and the size of the thin plate are more in millimeter level and below, and at least one blade is arranged in the hollow frame supporting part; at least one surface of the skin contact side surface of the blade is approximately conformal with the edge skin contact side surface of the hollow frame supporting part in the same direction/same side, the blade can be fixedly connected in the edge of the plate-shaped hollow frame, two ends of the blade can be connected on a pair of edge surfaces of the frame, and the hollow frame supporting part is formed by integral forming, assembly forming or combination thereof; forming a blade holder or a blade head alone or in combination with the housing; the blade unit/blade assembly is formed by stamping, cutting, gluing, welding, fusing, snapping, riveting, threading, molding, wire cutting, etching, additive manufacturing, subtractive machining or a combination thereof, the thin strip of aluminum is bent over the stationary blade behind the side apertured blade holder; forming at least one of the new blade holders; simple pivotal connections can also be added to form a simple blade holder/bit; the complexity is also to add fixed attachment structures, lubricant and guards to form the cartridge/bit after attachment to the housing/shell.

The preferable blade holder is provided with a skin contact supporting part and a blade supporting part, the skin contact supporting part can be in a plate shape or a three-dimensional shape with a side elevation, and the blade supporting part can be a shaft or a surface; the blade holder is formed of a blade unit structure having at least one of a support side, guard, lubrication, housing, mount, connector, or combinations thereof, and the support may also have a continuous outer surface, such as a partially continuous closed curve, polyhedron, or the like.

Preferred blade holder configurations include at least one of single bevel edge blades, double bevel edge blades, or combinations thereof.

Preferred blade holder configurations include at least one of integrally formed, split configurations, or combinations thereof.

The preferred insert seat shape interfits with the insert end shape; the blade seat is at least used for accommodating the end part of the blade, and the matching shape of the side edge of the blade frame is determined according to the designed gap size of the blade edge, the protruding amount of the blade edge and the blade angle; the preferred blade seat ensures that the blade is accommodated while also providing a proper angle of the blade edge tip to the skin support surface or beard; for example, an inverted L-shaped curved blade may have a similar depending support structure in the blade housing, as may the edge tip of the upwardly inclined prism; the cartridge may have a two shaving face configuration, the cartridge having two opposing shaving face configurations including at least one of symmetrical and asymmetrical configurations of shaving faces or combinations thereof.

A novel shaving apparatus comprising a cartridge, a connecting member and a gripping portion, which is at least one of a shaving apparatus employing a blade structure, a blade unit structure and a novel cartridge as claimed in any one of the preceding claims or a combination thereof; only the edge part of the razor blade is arranged, or the razor blade is a polygon body, at least one edge of the polygon body can be used as the tip of the razor blade, the edge used as the tip of the razor blade is not a symmetrical edge of the polygon body, and the polygon body is at least a prism body; the skin supporting part is a plate-shaped hollow frame, at least one blade is arranged in the hollow frame supporting part, at least the skin contact side surface of the plate-shaped hollow frame supporting part is a continuous surface, a continuous plane, a curved surface or a combination thereof, at least one of the plate shape, which is a general thin plate, comprises a plane thin plate and a curved surface thin plate, the curved surface thin plate is a large-curvature thin plate, the thickness and the size of the thin plate are more in millimeter level and below, and at least one blade is arranged in the hollow integral frame supporting part; the hollow frame supporting part is formed by integral forming, assembly forming or combination thereof; the two ends of the blade are connected with one side surface of the frame, the skin contact side surface of the blade and the side skin contact side surface of the hollow frame supporting part in the same direction/same side have approximately same shape surfaces, and the blade unit forms a blade frame or a blade head independently or after being combined with the shell; the connection form of the blade holder and the holding part comprises at least one of magnetism, buckle, embedding or combination thereof; the connection mode of the blade holder and the holding part comprises at least one of single point, single edge, multiple edges or the combination thereof.

Preferred blade holder and grip connection means include at least one of detachable from the hand grip, detachable from the blade holder, or a combination thereof; the direct connection of the blade holder and the holding part and the connection of the blade holder and the holding part through an intermediate piece are included; the intermediate piece can be a freely separated piece, and also can be a non-free connecting piece of the blade holder or the holding part, namely the intermediate piece can be separated from the blade holder, separated from the holding part and simultaneously separated from the blade holder and the holding part respectively in three separation modes; the connection mode of the blade holder and the holding part comprises at least one of single point, single edge, multiple edges or the combination thereof; the connection form of the blade holder and the holding part comprises at least one of magnetism, buckle, embedding or combination thereof; the structural shape may be a point of various shapes, a line of various shapes, a plane of various shapes, a one-dimensional, a two-dimensional or a three-dimensional.

The invention has the beneficial effects that:

1. two blade structures are provided, and new structure options are added.

2. New blade unit configurations are proposed, adding new configuration options.

3. Novel blade holders are presented.

4. Any product, device or system that employs a novel blade holder.

Drawings

FIG. 1 is a schematic view of a triangular prism blade configuration

1. Edge tip, 2, plane of symmetry

Detailed Description

In the first embodiment, the blade is designed as a triangular prism, the length of a single blade is 36mm, the vertical height from the blade tip to the section of the opposite face is 0.3mm, the section triangle is a right-angled triangle with both height and length being 0.3mm, a hypotenuse triangle is formed by removing a right-angled triangle formed by connecting the midpoint of the opposite edge of the blade tip and the vertex of the opposite blade tip, the included angle of the blade tip is about 18 degrees, an integral hollow rectangular stainless steel plate frame with the length of 40 × the width of 8.4 × and the thickness of 0.3mm is used as a blade supporting part, the widths of two short sides of the stainless steel plate frame are both 2mm, one of two long sides of the stainless steel plate frame is 2mm, and the other is 2.5 mm; the clearance of the tip of the cutting edge of each blade is 0.3mm, each blade in 6 blades is uniformly connected to the surfaces of two short edges of the stainless steel plate frame at intervals, the blade plane opposite to the tip of the cutting edge is parallel to the surface of the hollow rectangular stainless steel plate frame, the blades can be integrally formed with the hollow rectangular stainless steel plate frame, or can be welded on the hollow rectangular stainless steel plate frame after being formed by machining the blades in advance, the end parts of the side surfaces of the blades are fixed by adopting the contact points of the laser welding blades and the frame, or can be welded by wave peaks, and each longitudinal side surface of each blade is provided with two welding points to form a blade assembly or a blade unit; the blade and the hollow rectangular stainless steel plate frame can be integrally formed in a mode of etching and polishing after laser cutting, the blade assembly or the blade unit can be placed in a blade shell space to be assembled into a complete blade holder or head, the blade unit can be independently formed into the blade holder or a blade head after functional accessories and a pivoting connection structure are added, the blade unit frame can also be called a blade base or a shell frame, flat holes capable of passing through fixing sheet aluminum sheets are machined in two short edges of the frame, the fixing sheet aluminum sheets are tightly pressed and then fixed on the shell, after a protection piece and a lubricating piece are arranged, other subsequent structures can be flexibly selected and perfected according to design expectation, and then a handle is connected to form the shaving device.

In the second embodiment, the blades are designed without a base body, the cross section of each blade is in an isosceles triangle shape, the length of each blade is 36mm, the height of each blade is 0.2mm, the included angle of each blade edge is 30 degrees, the length of the edge tip opposite side of each cross section is 0.2mm, a hollow rectangular stainless steel plate frame with the length of 40 x the width of 6.24mm is used as a blade supporting part, the thickness of the frame is 0.2mm, the width of four sides of each stainless steel plate is 2mm, the gap between the 6 blades at the edge tips of the blades is uniformly spaced and is 0.32mm, the surface of the edge tip at the blade skin contact side of each blade is flush with the surface of a thin plate at the skin contact side of the frame supporting part, the blades can be integrally formed with the hollow rectangular stainless steel plate frame, or can be welded on the hollow rectangular stainless steel plate frame after being formed by machining the blades in advance, the angles and positions of the blades are temporarily positioned by an auxiliary positioning tool, the end parts of the longitudinal sides of the blades are fixedly connected with the short sides of the thin plates at the frame supporting part, at least one surface between the upper and lower contact lines on the two side surfaces is fixed by welding or an adhesive, one or two adhesive lines are arranged on the two side surfaces of the blade, the adhesive can be applied by 3D printing and can also be ultraviolet cured, the blade and the hollow rectangular stainless steel plate frame are integrally formed by laser cutting and laser polishing, and the blade is fixed to form a blade assembly or a blade unit; the razor can also be formed by wave soldering or laser welding, or a plastic frame can be adopted, the thickness of the plastic frame can be larger than that of the blade, the blade can be made of stainless steel or ceramic, the blade assembly or the blade unit can be placed in the space of the shell of the razor head and assembled through a buckle structure, a complete blade holder or razor head is formed by arranging a protection part, a lubricating strip and a pivoting connecting part, the blade unit can also be independently made into the blade holder or the razor head, at the moment, the blade frame can also be called as a blade base, and the blade base can be flexibly selected and perfected according to the design and then is connected with a handle to form the shaving device.

In the third embodiment, the blades are of a non-matrix design, the cross section of each blade is an isosceles triangle, the length of each blade is 36mm, the height of the triangle of the cross section is 0.3mm, the included angle of the blade edge is an acute angle, the length of the edge opposite to the tip of the edge of the cross section is 0.2mm, 6 blades are uniformly arranged at intervals, the gap between the tips of the blades is 0.32mm, the blade holder shell is provided with a protection part, a top cover and two side edges, the inner sides of the two side edges are at least provided with a matched shape structure for supporting the blades, the matched shape of the supporting blades on the inner sides of the side edges is a step concave shape, the shape and the size of the step concave shape of the inner sides are determined according to the size of the gap between the adjacent blades, the exposure of the blades and the step concave surface of the supporting blades on the inner sides of the side edges, the blades are in contact with the surface opposite to the blade edges and the step concave surface of the supporting blades on the inner sides of the blades, and the blades are bent by perforated aluminum thin strips, and the blades are fixed to form the blade holder; the blades can be made of stainless steel or ceramic, and can be fixed by welding or bonding, a complete blade frame or a complete blade head is formed by arranging a protection part, a lubricating strip and a pivoting connecting part, and the shaving device can be formed by flexibly selecting and perfecting other structures and connecting a handle according to design expectation.

This description is by way of example only, and not necessarily all of the prior art has been omitted; all possible forms, methods, shapes and configurations, which are possible without the inventive activity of anyone, within the scope of protection of the present invention, as determined by the claims, are the scope of protection of the present invention.

Claims

1. A razor blade structure is characterized in that the razor blade is in the shape of a polygon, at least one edge of the polygon can be used as a cutting edge tip, the edge used as the cutting edge tip is not a symmetrical edge of the polygon, and the polygon is at least a prism.

2. A blade structure is characterized in that the shape of a shaver blade only has a blade part and no matrix.

3. A blade construction according to claim 1 or 2 wherein the blade has two acute angles.

4. A blade construction according to claim 1 or 2 wherein the angle of the blade to the skin engaging surface is adjusted by selecting the angle of the polygonal body blade.

5. A novel blade unit characterized by the use of a blade unit or a combination of blade units of the blade unit structure of any one of claims 1 to 4, at least one of which is formed as a blade unit, at least one of which is a razor blade in the shape of a polygonal body or a matrix-free blade edge portion or a combination thereof, at least one of which is formed as a blade unit.

6. A blade unit structure according to claim 5, wherein the skin supporting portion of the blade unit is a plate-shaped hollow frame supporting portion.

7. A blade unit structure as claimed in claim 5, wherein the blade seat shape and the blade end shape are complementary.

8. A novel blade holder characterized by the use of a blade structure, blade unit or combination thereof according to any one of claims 1-7, at least one of which is formed into a blade holder, at least one of which is in the shape of a polygon, a matrix-free blade edge or combination thereof, at least one of which is formed into a blade holder.

9. The novel blade holder of claim 8 wherein the blade holder side interior or blade seat shape interfits with the blade end shape.

10. A novel shaving apparatus, characterized in that the shaving apparatus is formed by using at least one of the blade structures, blade units, novel blade holders or combinations thereof according to any one of claims 1 to 9, the shaving blades being at least triangular prisms or matrix-free blade portions.