CN1880032A - Cutting blade and cutting blade assembly for electric shaver - Google Patents

Abstract

In a cutting blade assembly for an electric foil shaver, a first cutting blade of the assembly has a generally planar first face, a generally planar second face opposite the first face, and a peripheral cutting edge. The first cutting blade has at least one bump disposed on its first face. A second cutting blade of the assembly has a generally planar first face, a generally planar second face opposite the first face, and a peripheral cutting edge. The first and second cutting blades are arranged in generally parallel relationship with each other with the first face of the first cutting blade facing either the first face or the second face of the second cutting blade. The bump on the first face of the first cutting blade keeps the first and second cutting blades otherwise separated during a coating process in which the faces of the cutting blades are coated.

Description

The blade and the blade assembly that are used for electric shaver

Technical field

The present invention relates in general to the blade assembly that is used for electric shaver, relates more specifically to be used for the blade that is easier to use the Coating Materials plated film of this assembly.

Background technology

Electric shaver is generally used for shaving except that hair facial and on one's body.Many people like electric shaver to surpass razor, because the blade of electric shaver does not contact skin, have therefore reduced the danger of scuffing, incised wound and other cutaneous pain.A kind of electric shaver of general type typically refers to paillon foil shaver (Fig. 1), wherein, comprises that the blade assembly (Fig. 2) of a plurality of blades that are arranged in parallel is arranged in thin and the soft paillon foil with holes or guard, and moves back and forth together therein.Blade assembly moves back and forth with respect to paillon foil with holes, and the blade of blade contacts with the inner surface of paillon foil with holes, so the reciprocal mesh that forms in paillon foil with holes more of the blade of blade.Slide on skin surface to be shaved by the outer surface that makes paillon foil with holes, the undercoat that separates is sent out to enter in the mesh that forms in the paillon foil with holes and by the blade of reciprocating blade and is cut off.

Usually as shown in Figure 2 by with a plurality of blades be parallel to each other, spaced relationship is installed on the public bolster and constructs blade assembly.Blade can be circular, semicircle or other shape.Particularly, each blade all has and is configured to generally and the corresponding circumferential edge of the shape of cross section of paillon foil with holes, is beneficial to blade and snugly contacts with paillon foil with holes.Blade forms from the punching press of thickness even metal band usually.

Also be known that and utilize suitable plated film part or all of the employed blade of paillon foil shaver to be carried out plated film to increase the intensity and the wearability of blade with compound such as titanium compound, nickel compound etc.In a kind of technology, blade assembly one is installed in conventional coating process such as the physical vapor deposition (PVD) technology of independent blade-execution on the public bolster with promptly being spaced from each other, carries out plated film with the apparent surface to each blade.Yet this technology only can be carried out plated film to the blade of lesser amt.

Hope blade before the assembling blade assembly is carried out plated film.For example, after initial the shaping but before the assembling blade assembly, as shown in Figure 3 a large amount of blades is loaded into storage and transportation to make things convenient for blade on metal wire or the thin bar.Yet, deposit at this cloth and to be difficult to blade and to carry out effective plated film simultaneously, because blade has the folded mutually trend of leaning on metal wire as shown in Figure 3, stop blade apparent surface plated film correctly thus.

Therefore need to be easier to keep separated blade each other in a kind of coating process before the assembling blade assembly.

Summary of the invention

Generally, the blade assembly that is used for electronic paillon foil shaver according to an embodiment of the invention comprise have smooth generally first surface, the generally smooth second surface relative and circumferential first blade of blade with first surface.The described first surface of this first blade is provided with at least one protuberance.(described blade assembly) second blade has smooth generally first surface, the generally smooth second surface relative with first surface and circumferential blade.Described first and second blades are arranged in the blade assembly generally in parallel to each other, wherein the first surface of first blade in the first surface of second blade and second surface.

At an embodiment of the blade of the electric shaver blade assembly that is used for comprising a plurality of blades, blade has smooth generally first surface, the generally smooth second surface relative with first surface and circumferential blade.This blade also has at least one protuberance on its first surface.

The method that the blade that is used for the blade assembly according to an embodiment of the invention carries out plated film generally includes first and second blades that will separate and is arranged in supporting member substantially parallel to each other, wherein each first and second blade all have first surface and with the first surface opposing second surface.Described deposition step generally includes first and second blade arrangement that will separate on supporting member, and the respective external marginating compartment of the second surface of the external margin of first surface of the blade of winning and second blade is opened.When blade remained on the supporting member, blade was implemented coating process so that the external margin on first and second surfaces of each first and second blade is carried out plated film.Subsequently, take off blade, and be installed on the supporting member of blade assembly with being spaced from each other from supporting member.

Description of drawings

Fig. 1 is the perspective view of the foil-type electric shaver of prior art;

Fig. 2 is the perspective view of the shaver of the prior art shown in Fig. 1, and wherein a plurality of parts decomposition of this shaver are come with show internal structure;

Fig. 3 is the partial elevation view that is loaded on the metal wire supporting member with a plurality of blades of implementing coating process;

Fig. 4 is according to the one embodiment of the invention structure and by the partial elevation view of metal wire supporting member supporting with a plurality of blades of execution coating process;

Fig. 5 is the front view of the blade assembly of the foil-type electric shaver that is used for electric shaver such as Fig. 1 according to an embodiment of the invention;

Fig. 6 A is the perspective view on a surface of the blade in the blade assembly of Fig. 5;

Fig. 6 B is the apparent surface's of described blade a perspective view;

Fig. 6 C is the side view on that surface of blade shown in Fig. 6 A;

Fig. 7 A is the side view on a surface of second embodiment of blade of the present invention;

Fig. 7 B is apparent surface's the side view of the blade of Fig. 7 A;

Fig. 8 is according to the second embodiment of the invention structure and by the partial elevation view of metal wire supporting member supporting with a plurality of blades of execution coating process; And

Fig. 9 is the front view according to the blade assembly of second embodiment of the invention.

In institute's drawings attached, corresponding Reference numeral is represented corresponding parts.

The specific embodiment

Fig. 1 and 2 particularly with reference to the accompanying drawings, blade of the present invention and blade assembly are particularly useful for and are depicted as in this article being combined in the electric shaver, and this electric shaver is for example shown in Fig. 1 and totally be designated the foil-type shaver (being also referred to as the paillon foil shaver) of 20 routine.Shaver 20 comprises housing 21 and protection/covering support base 22 generally, and this base portion is removably mounted on the housing to allow the dismounting support base to clear up/replace each member of shaver.Housing 21 accommodates the motor (not shown), and this motor is operably connected to a pair of knife rest 23 (Fig. 2), and this drives by the motor (not shown) knife rest, laterally to move back and forth with respect to housing when the motor running.Blade assembly 28 (Fig. 2) is installed in respectively on each knife rest 23, and wherein blade assembly is separated from each other with spaced relationship abreast and is independent.

A pair of paillon foil with holes 24 (also often being called guard) is installed on protection/covering support base 22, as one man to extend abreast about each other with blade assembly 28.Blade assembly 28 suitably is biased to and contacts with the inner surface of each paillon foil 24 with holes and can cut off hair.Paillon foil 24 with holes and blade assembly 28 also construct and are arranged to allow in use with respect to housing 21 flex motions, and blade assembly keeps contacting with paillon foil with holes simultaneously.

Activate startup/shutdown switch 25 (Fig. 1) hotwire, contact with paillon foil 24 inner surfaces with holes simultaneously to drive blade assembly about 28 reciprocating motions.Skin surface guiding (for example sliding) paillon foil 24 with holes to be shaved is beneficial to undercoat and sends out the mesh that extends through in the paillon foil with holes.Contact with paillon foil 24 inner surfaces with holes simultaneously along with the blade 30 of blade assembly 28 moves around on the mesh of paillon foil with holes, the hair that extends through mesh is cut off by blade.At the common U.S. patent No.6 that transfers the possession of, other structure and the operation of the electric shaver 20 shown in Fig. 1 have been described among 601,302 (Andrew), what this paper had quoted this patent discloses corresponding to content to do reference with the present invention.

Specifically with reference to figure 5, the blade assembly 28 that totally is designated shaver 20 shown in alternative Fig. 1 of blade assembly of 128 according to an embodiment of the invention uses.Blade assembly 128 comprises that generally longitudinally axis X (being limited by bolster in the illustrated embodiment) is with the blade 130 that is parallel to each other, spaced relationship is installed in a plurality of separation on the bolster 131.Term " separation " the expression blade that is used to describe blade 130 forms member separately, independent, is not the unit of set before being installed to blade assembly 128.Although each blade assembly 128 has 28 blades 130 altogether in the embodiment shown in fig. 5, should be appreciated that knife number on each blade assembly can change and can not depart from the scope of the present invention.

Each blade 130 all has smooth generally first surface 132, the generally smooth second surface 134 relative with first surface and circumferential blade 136.One section 138 of the circumferential blade 136 of each blade 130 suitably has the corresponding to profile of inner surface profile basic and paillon foil 24 with holes, so that the contact of basic applying to be provided between the two.In illustrated embodiment, each blade 130 be circle or dish type substantially, therefore no matter blade be installed on the bolster 131 angular orientation how, the profile of the segmental arc 138 of the circumferential blade 136 of each blade all mates with the profile phase of the inner surface of paillon foil 24 with holes.But should be appreciated that blade 130 is not necessarily circular, because the circumferential blade 136 of each blade only has definite section need have profile with the profile phase coupling of paillon foil 24 with holes.The section 138 that circumferential blade 136 contacts with the inner surface of paillon foil 24 with holes defines the blade that is used to cut the hair that extends through paillon foil mesh with holes substantially.

All be formed with opening 139 (Fig. 6 A and 6B) on each blade 130, this opening is used for blade is installed on the bolster 131 to form blade assembly 128.Particularly, opening 139 is formed on the center of each circular shear blade 130 of illustrated embodiment.The center of opening 139 defines the reference point P (Fig. 6 C) of blade 130 substantially.Therefore, in the illustrated embodiment, the reference point P of blade 130 is positioned on the longitudinal axis X of blade assembly 128.But the reference point P that should be appreciated that blade 130 is not the longitudinal axis X that must be positioned at blade assembly 128 to be gone up and could keep within the scope of the present invention.

With reference to figure 5 and Fig. 6 A, 6B and 6C, each blade 130 suitably is provided with one or more protuberances 142 at least on its first surface 132.For example, in the embodiment shown in Fig. 6 A, 6B and the 6C, the first surface 132 of blade 130 is provided with the protuberance 142 of four separation.But, any amount of protuberance 142 can be set on the first surface 132 of blade 130, for example an independent protuberance (as an independent separation protuberance or a continuous protuberance), be less than four or more than four protuberance, and can not break away from the scope of the invention.In blade assembly shown in Figure 5 128, the first surface 132 of blade 130 is corresponding to the surface towards a left side of diagram blade, and protuberance 142 is protruding from the left-hand face of blade.But should be appreciated that first surface 132 also can be corresponding to the surface of diagram blade 130 towards the right side, protuberance 142 stretches out to the right from this surface.

In an especially suitable embodiment, form protuberance 142 by in the second surface 134 of blade 130, stamping out recess 144, and each protuberance is formed by a corresponding recess.Alternatively, without departing from the present invention, can form protuberance 142 at the first surface 132 of blade 130 by being different from the method that in second surface 134, stamps out recess 144, and recess can omit fully.

The protuberance 142 of blade 130 shown in Fig. 6 C respectively has an elongated generally plane projection (be protuberance on the plane of blade such as the projection on the first surface 132).Particularly, protuberance 142 is spaced laterally apart ground and substantially tangentially extension on the first surface 132 of blade 130 equidistantly mutually with respect to the reference point P (being the center of illustrated embodiment split shed 139) of blade 130.The term " horizontal " or " laterally " that are used to describe blade assembly 128 and/or blade 130 are meant the direction that for example is parallel to the plane 132,134 of each blade transverse to the longitudinal axis X of blade assembly.For the circular shear blade 130 of illustrated embodiment, " laterally " is meant " radially ".

Should be appreciated that protuberance 142 can be other plane projection shape, for example circular, semicircle, polygon or irregularly shaped.It is also conceivable that protuberance 142 laterally (for example, in the illustrated embodiment radially) or on the first surface 132 of blade 130, extend with an angle of inclination.In addition, one or more protuberances 142 on the first surface 132 of blade 130 can have a kind of shape in plane projection, and one or more other the protuberance on the same first surface of blade can have another or several shape in plane projection.Shown in Fig. 6 C, if desired, protuberance 142 is properly spaced out from circumferential blade 136 inside (promptly laterally inwardly), so that allow blade to carry out plated film near the part of blade, and allows to form when needed the cutting angle of blade.

According to one embodiment of the method for the invention, after protuberance forms and before blade being installed on the blade assembly 128, suitably blade 130 is implemented coating process.Particularly, blade is through such coating process, wherein at least a portion on first and second surfaces 132,134 of each blade and circumferentially plate suitable coating on the blade 136, to improve its intensity and wearability.As example, can on blade 130, plate titanium nitride compound or other film coating composition or material that is fit to.Can more specifically suitably implement plated film by physical vapor deposition (PVD) technology by arc evaporation PVD coating process, described technology is known to those skilled in the art, except the open necessary content of the present invention, in the literary composition no longer to its detailed description.

In an especially suitable embodiment, first and second surfaces 132,134 of each blade 130 are near the plated film annular rim region that the circumferential blade 136 from blade laterally inwardly extends along each surface only.For example, the width that carries out the annular rim region of plated film along each surface 132,134 of its blade is about 0.012 inch (about 0.30mm).But should be appreciated that without departing from the present invention, can be to the whole surface of each blade of the more parts of each blade face 132,134-comprise-carry out plated film.

With reference to Fig. 4, in order to prepare a plurality of blades 130 that are used for first and second surfaces 132,134 are carried out plated film, a plurality of blades are loaded into metal wire 146 (being supporting member in a broad aspect), bar or other cross sectional dimensions make on the suitable supporting member less than the opening in the blade.As example, be loaded on the metal wire 146 and can suitably arrive in about 2750 the scope about 1800 with the knife number of carrying out plated film.But, without departing from the present invention, more or less blade can be loaded on the metal wire 146.The first surface 132 of blade all towards same direction (for example in mode shown in Fig. 3, left).Should be appreciated that and blade can be installed on other parts that are different from metal wire 146 or bar, as be placed on the suitable carriage or on other suitable supporting member, this still falls within the scope of the present invention.

Between adjacent blade 130, the protuberance 142 that forms on the first surface 132 of a blade contacts with the second surface 134 of adjacent knife blades, so that adjacent knife blades spaced apart is substantially equal to the distance of the projection of protuberance.In this article, the projection of protuberance 142 is meant the height of the summit of protuberance with respect to the plane of the first surface 132 of blade 130.Therefore, protuberance 142 separates blade 130 equably mutually and makes blade remain on the metal wire 146 (that is, protuberance stoped blade is folded to be close together) in coating process with being spaced from each other.As example, suitably have at the protuberance 142 of the blade 130 shown in Fig. 6 A and the 6C and to be at least about 0.0005 inch (about 0.013mm), more suitably to be at least about the projection of 0.001 inch (about 0.025mm).

For forming the situation of protuberances 142 by in the second surface 134 of blade 130, stamping out recess 144, if blade is identical and be loaded on the metal wire 146 danger that then exists the protuberance on the blade first surface 132 may be inserted in the recess on the adjacent knife blades second surface with identical angular orientation.In this article, term " angular orientation " is meant the rotation location of blade 130 on metal wire 145 (or blade assembly 128), as longitudinal axis X from 0 to 360 degree around this metal wire (or blade assembly).Therefore, in an embodiment (Fig. 4), adjacent knife blades 130 suitably is loaded on the metal wire 146, so that the protuberance 142 on blade does not align with recess 144 on the adjacent knife blades with different angular orientations.

Then, the blade 130 that is bearing on the metal wire 146 is implemented coating process simultaneously, carry out plated film with at least a portion to each blade.Only the part on each surface 132,134 of each blade 130 is carried out the situation of plated film for hope, two end blades that should be appreciated that a plurality of blades that carry out plated film are the plated film fully towards the surface of outside longitudinally.After blade 130 plated films, take off blade from metal wire 146, and be installed on the bolster 131 to form blade assembly 128 in mode shown in Figure 5.

In the time of on being installed in bolster 131, blade 130 suitably separates each other with a constant pitch, makes the second surface 134 spaced apart (promptly not contacting) be arranged at protuberance 142 and adjacent knife blades on the blade first surface 132.In this embodiment, within the scope of the invention, the angular orientation of the blade 130 in the blade assembly 128 can be identical or different.Selectively, the protuberance 142 on the first surface 132 of blade 130 can contact the second surface 134 of adjacent knife blades, and each blade suitably is in the position different with the angular orientation of adjacent knife blades simultaneously.

In the optional embodiment shown in Fig. 7 A and the 7B, the recess 244 on blade 230 and protuberance 242 with respect to the reference point P of blade suitably be formed on adjacent knife blades 130 (as the blade among Fig. 6 A, 6B and the 6C 130) on recess 144 position different with protuberance 142.For example, blade 230 shown in Fig. 7 A have with reference point P (promptly, the center of the opening 239 of the circular shear blade shown in Fig. 7 A) protuberance 242 of the position of distance D formation and corresponding recess 244 (not shown), this distance D is greater than the protuberance 142 of blade 130 among Fig. 6 C and the distance D of respective recess 144.

As example, the diameter of the blade 130,230 shown in Fig. 6 C and the 7A is about 0.275 inch (about 6.99mm).Protuberance 142 among Fig. 6 C on the blade 130 and the about 1.88mm of reference point P spacing distance D (center from the reference point to the protuberance is measured).Protuberance 242 and about 0.103 inch of reference point P spacing distance D (about 2.62mm) among Fig. 7 A on the blade 230.But should be appreciated that without departing from the present invention the distance D at interval also can be different from illustrated embodiment between the reference point P of protuberance 142,242 and blade 130,230.

As shown in Figure 8, implement coating process in order to prepare blade 130,230, blade suitably is loaded on the metal wire 246, adjacent knife blades has the different protuberance 142,242 of reference point P distance with respect to blade.For example, first blade 130 can be the blade shown in Fig. 6 C, and second blade 230 can be the blade shown in Fig. 7 A then, is the blade among another Fig. 6 C then, is the blade among another Fig. 7 A then, or the like.In this layout, be formed at protuberance 142,242 on the first surface 132,232 of blade 130,230 and misalignment (can not be inserted in thus) be formed at recess 144,244 on the second surface 134,234 of adjacent knife blades.

After blade 130,230 plated films, take off blade from metal wire 246 and also be installed on the bolster 231 with being spaced laterally apart mutually as shown in Figure 9, and make the protuberance 142,242 of each blade and the second surface 134,234 spaced apart (promptly not contacting) of adjacent knife blades.Selectively, blade 130,230 can draw closer together so that the second surface 134,234 of the protuberance of each blade 142,242 contact adjacent knife blades.

But blade (for example then, the blade 130,230 of the blade 130 of the blade assembly 128 of Fig. 5 or the blade assembly 228 of Fig. 9) implements suitable finishing process, as removing material from the circumferential blade 136,236 of each blade (at least along will with contacted one section of the inner surface of paillon foil 24 with holes).It is contemplated that blade 130,230 is implemented material removal process when blade is installed on the bolster 231, perhaps before blade 130,230 is installed to bolster, each independent blade is suitably implemented material removal process.

In addition, though this paper diagram and the blade of describing 130,230 (for example respectively comprise an independent circumferential blade 136,236, make and in the shaver with two paillon foils 24 with holes 20 shown in Figure 1, need the blade assembly of two separation), but it is contemplated that, can use an independent blade assembly according to the present invention with a plurality of monoblock type blade (not shown), described single blade has two blades (for example, each blade is corresponding with each paillon foil with holes respectively).At the common U.S. patent No.5 that transfers the possession of, this monolithic blade chip architecture is disclosed among 138,767 (Locke), this paper has quoted this patent and the corresponding to whole disclosures of the present invention to do reference.It is also understood that and only to use a blade assembly 128,228 according to the present invention or use plural blade assembly.

When introducing the parts of the present invention or its preferred embodiment, article " ", " being somebody's turn to do " and " described " has been meant one or more parts.Term " comprises ", and " comprising " and " having " is meant except the parts of listing also can have other parts.

Owing to can carry out various variations to said structure, product and method without departing from the present invention, comprise in the explanation above therefore and accompanying drawing shown in all the elements be interpreted as exemplary rather than restrictive.

Claims (20)

1. blade assembly that is used for electronic paillon foil shaver, described blade assembly comprises:

Have smooth generally first surface, the generally smooth second surface relative with first surface and circumferential first blade of blade, the described first surface of described first blade is provided with at least one protuberance; And

Have smooth generally first surface, the generally smooth second surface relative and circumferential second blade of blade with first surface;

Described first blade and second blade are arranged in the blade assembly substantially in parallel to each other, wherein the first surface of first blade in the first surface of second blade and second surface.

2. blade assembly as claimed in claim 1, it is characterized in that, its first surface of second blade is provided with at least one protuberance, and described first blade and second blade are arranged in the blade assembly, and wherein the first surface of first blade is towards the second surface of second blade.

3. blade assembly as claimed in claim 1, it is characterized in that, first and second blades are arranged in the blade assembly substantially in parallel to each other, wherein the first surface of first blade is towards the second surface of second blade, and at least one protuberance on the first surface of the second surface of described second blade and first blade is spaced apart.

4. blade assembly as claimed in claim 1 is characterized in that, first blade has at least one recess on its second surface, and described at least one protuberance on the first surface of described at least one recess and described first blade is corresponding.

5. blade assembly as claimed in claim 2, it is characterized in that, second blade is substantially the same with first blade, and first blade is in first angular orientation in blade assembly, and second blade is in second angular orientation of first angular orientation that is different from first blade in blade assembly.

6. blade assembly as claimed in claim 2, it is characterized in that, blade assembly has longitudinal axis and axis of pitch, first blade and second blade are arranged on the longitudinal axis of blade assembly in parallel to each other, at least one protuberance on the first surface of first blade is arranged on the longitudinal axis first lateral separation place apart from blade assembly, at least one protuberance on the first surface of second blade is arranged on the longitudinal axis second lateral separation place apart from blade assembly, and described second lateral separation is different from described first lateral separation.

7. blade assembly as claimed in claim 1 is characterized in that at least one protuberance has the projection at least about 0.013mm.

8. blade assembly as claimed in claim 2 is characterized in that, first blade has at least one recess on its second surface, and described at least one protuberance on the first surface of described at least one recess and described first blade is corresponding; Described at least one second blade has at least one recess on its second surface, and described at least one protuberance on the first surface of described at least one recess and second blade is corresponding.

9. blade assembly as claimed in claim 1, it is characterized in that, at least a portion of the first surface of first blade is coated with coating, at least a portion of the second surface of first blade is coated with described coating, at least a portion of the first surface of second blade is coated with described coating, and at least a portion of the second surface of second blade is coated with described coating.

10. blade assembly as claimed in claim 9 is characterized in that, described coating to small part is a titanium nitride.

11. blade assembly as claimed in claim 9, it is characterized in that, the first surface of first blade has from the circumferential blade of described first blade and extends internally and be coated with the fringe region of described coating, the first blade first surface do not plate described coating basically from the inside remainder of described fringe region.

12. blade assembly as claimed in claim 11, it is characterized in that, the second surface of first blade has from the circumferential blade of described first blade and extends internally and be coated with the fringe region of described coating, and the inside remainder of the fringe region from described second surface of the first blade second surface does not plate described coating basically.

13. blade that is used for the electric shaver blade assembly, described blade assembly comprises at least two described blades, described blade has smooth generally first surface, the generally smooth second surface relative with first surface and circumferential blade, and described blade also has at least one protuberance that is positioned on the described first surface.

14. blade as claimed in claim 13 is characterized in that, blade has at least one recess on its second surface, and described at least one recess is corresponding with described at least one protuberance on the blade first surface.

15. blade as claimed in claim 13, it is characterized in that, blade assembly has longitudinal axis, blade has reference point, this reference point limits the longitudinal axis of blade assembly at least in part, have at least two protuberances on the first surface of blade, the reference point distance of described at least two protuberances and blade is equally spaced apart.

16. blade as claimed in claim 13 is characterized in that, at least one protuberance is elongated.

17. blade as claimed in claim 16 is characterized in that, blade has the plane projection that is essentially circular and has a radius, and described at least one protuberance tangentially extends basically with respect to the radius of blade.

18. blade as claimed in claim 13 is characterized in that, described at least one protuberance has the projection that is at least about 0.013mm.

19. a method that is used for the blade of the blade assembly of electronic paillon foil shaver is carried out plated film, described method comprises:

Basically be arranged on the supporting member parallel to each other first blade and second blade that separate, each described first blade and second blade all have first surface and with the first surface opposing second surface, described deposition step comprises first blade that will separate and second blade arrangement on supporting member, and the respective external marginating compartment of the second surface of the external margin of first surface of the blade of winning and second blade is opened; And

When blade remained on the supporting member, blade was implemented coating process so that the first surface of each described first blade and second blade and the external margin of second surface are carried out plated film;

Take off blade from supporting member; And

To be installed on the supporting member of blade assembly with being spaced from each other through the blade of plated film.

20. method as claimed in claim 19 is characterized in that, described deposition step comprises arranges first blade and second blade, makes the part of the first surface of the blade of winning contact the second surface of second blade.

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