Patent Application
20170050326
The present application claims the benefit of Chinese Patent Application No. 201510514702.6 filed on Aug. 20, 2015, the contents of which are hereby incorporated by reference.
The disclosure relates to the technical field of personal care products, and in particular to a personal care trimmer.
A using method for a traditional shaver refers to that: before the shaver is used, it is necessary to cut hair short, and then the hair with the residual length is cleanly shaven using the shaver. However, two operations are needed. In addition, because a fixed blade part of the traditional shaver is relatively thick, when the shaver is used, a contact surface between the shaver and skin is large, which may cause skin irritation or allergy. In order to solve the above two problems, it is necessary to make the fixed blade thin. However, the fixed blade, which is too thin, is easy to deform and unsafe to use.
If an ultrathin tool is produced in a machining manner, the tool will be bent, deformed or even broken. If a blade blank is formed by shearing in a die stamping manner, a sharp cutting edge cannot be achieved, which causes poor shearing capacity of the tool.
So, it is necessary to design a better personal care trimmer, which is intended to solve the above problems.
In view of the problems in the conventional art, the disclosure provides a personal care trimmer having an ultrathin fixed blade and a manufacturing method for an ultrathin fixed blade. The ultrathin fixed blade is adopted. The ultrathin fixed blade is formed using an etching technology, such that an ultrathin tool cannot deform, and the shearing capacity can be improved.
To this end, the disclosure adopts the technical solution as follows.
A personal care trimmer having an ultrathin fixed blade may comprise a body and a cutting head. The cutting head may comprise a fixed blade and a movable blade, the fixed blade being fixed, the movable blade being driven by a drive device in the body to perform reciprocating movement with respect to the fixed blade so as to achieve shearing.
The fixed blade may be an ultrathin fixed blade.
The personal care trimmer may further comprise a blade supporting piece, the blade supporting piece supporting the fixed blade or/and the movable blade without shielding blade teeth, needing to be exposed in shearing actions, of the fixed blade and the movable blade, the blade supporting piece being configured to prevent the fixed blade or/and the movable blade from deforming.
Preferably, the thickness of the fixed blade may be between 0.05 mm and 0.5 mm.
Optionally, the cross section of the blade supporting piece may be C-shaped, and both the movable blade and the fixed blade may be disposed in an opening of the blade supporting piece, wherein the fixed blade is fixedly attached to an inner surface of the blade supporting piece.
Preferably, an elastic piece configured to tightly press the movable blade against the fixed blade may be further disposed between the blade supporting piece and the movable blade. Or, an elastic piece may be disposed on a surface, adjacent to the movable blade, of the blade supporting piece, and may be configured to tightly press the movable blade against the fixed blade.
The cutting head may further comprise a blade rest, connected to the body and configured to fix the fixed blade, the movable blade and the blade supporting piece.
Optionally, the movable blade, the blade supporting piece and the fixed blade may be disposed in sequence from a bottom surface of the blade rest, and the blade supporting piece may be disposed between the movable blade and the fixed blade, wherein the fixed blade, the blade supporting piece and the blade rest are fixed in a screw manner, a laser welding manner or a plastic column hot-melting manner.
Preferably, an elastic piece configured to tightly press the movable blade against the fixed blade may be further disposed between the blade rest and the movable blade. Or, an elastic piece may be disposed on a surface, adjacent to the movable blade, of the blade rest, and may be configured to tightly press the movable blade against the fixed blade.
Optionally, the blade supporting piece, the fixed blade and the movable blade may be stacked in sequence, wherein the blade supporting piece and the fixed blade are fixed with the blade rest in a screw manner, a laser welding manner or a plastic column hot-melting manner, the movable blade is located between the fixed blade and the blade rest, the movable blade can move left and right with respect to the fixed blade, and an elastic piece is disposed between the movable blade and the blade rest and is configured to tightly press the movable blade against the fixed blade.
Optionally, the fixed blade, the movable blade and the blade supporting piece may be stacked in sequence, wherein the fixed blade is fixed with the blade rest in a screw manner, a laser welding manner or a plastic column hot-melting manner, the movable blade and the blade supporting piece are clamped between the fixed blade and the blade rest and can move left and right with respect to the fixed blade respectively, and an elastic piece is disposed between the blade supporting piece and the blade rest and is configured to tightly press the movable blade against the fixed blade.
In the above technical solution, the blade supporting piece may be of a platy structure.
Another optional technical solution is as follows. The blade supporting pieces may be disposed on side faces, away from each other, of the fixed blade and the movable blade respectively, and one of the blade supporting pieces, the fixed blade, the movable blade and the other blade supporting piece are stacked in sequence, wherein the edges of the sides, facing the blade teeth of the fixed blade and the movable blade, of the blade supporting pieces are set to be tooth-shaped, correspond to the blade teeth of the fixed blade and the movable blade, are supported to the blade teeth of the fixed blade or/and the movable blade, and do not go beyond the tips of the blade teeth.
The disclosure also provides a manufacturing method for an ultrathin fixed blade, which may comprise:
Step 1: cutting a coiled material to form a blade blank on the coiled material;
Step 2: cleaning and treating the surface of the blade blank;
Step 3: manufacturing an anti-corrosion protective layer on the surface of the blade blank, printing photosensitive materials in a blade region on the surface of the blade blank according to the blade design, and forming the anti-corrosion protective layer in a photosensitive material region reacts chemically under the action of light;
Step 4: etching the surface of the blade blank using a chemical solution, so as to obtain an ultrathin fixed blade, an etching region being a non anti-corrosion protective layer region; and
Step 5: removing the anti-corrosion protective layer on the surface of the ultrathin fixed blade.
Preferably, the photosensitive materials may be printed on the surfaces and edges of the blade blank, wherein the photosensitive materials at two opposite edges are printed to be saw-toothed, the saw-tooth shape corresponding to the blade tooth shape.
Preferably, when the photosensitive materials are printed at the saw-toothed edges, the saw-toothed edges of two opposite surfaces of the blade blank may be staggered, a projection of a printing region on one of the surfaces to the other surface may totally cover a printing region on the other surface, and after etching is completed, blade teeth at the edge of a tool may form a sharp cutting edge.
Optionally, the photosensitive materials may be not printed in a strip-shaped region on one of the surfaces of the blade blank. During etching, the strip-shaped region may be etched to form a groove, which does not run through the ultrathin fixed blade.
Optionally, the photosensitive materials may be photosensitive glue or photosensitive emulsions or photosensitive films.
Preferably, in Step 4, the chemical solution may be proportioned to contain 600 to 800 g/L of ferric chloride, 80 to 120 g/L of hydrochloric acid, 20 to 30 g/L of phosphoric acid and 80 to 100 g/L of sulfuric acid, the solution temperature may be 10 to 45° C., and the treatment time may be 15 to 20 min.
Preferably, in Step 5, the tool may be soaked into a sodium hydroxide solution so as to remove the anti-corrosion protective layer, the concentration of the sodium hydroxide solution being 40 to 60 g/L, the temperature of the sodium hydroxide solution being 50 to 80° C.
Optionally, after Step 5 is completed, the fixed blade may be electroplated with titanium metal.
Compared with the conventional art, the disclosure has the advantages as follows.
In the disclosure, an ultrathin fixed blade is adopted to be capable of trimming long hair in place once, the trimming position and length are more accurate, and the operation is easier. In addition, contact surfaces between blade teeth and hair are small, and accordingly, stimulation to skin is little during hair trimming, thereby improving the experience degree of a user.
An anti-corrosion protective layer is manufactured on the surface of a blade blank, and photosensitive materials are printed in a blade region; under the action of illumination, the photosensitive materials in the blade region react chemically so as to form the anti-corrosion protective layer; and then etching is performed to obtain an ultrathin fixed blade having blade teeth at the edge. In the disclosure, the ultrathin fixed blade is manufactured using a photochemical metal etching method without physical contacts, such that tool deformation is avoided, a sharp cutting edge of a tool can be ensured, and the shearing capacity of the tool is improved.
The technical solutions in the embodiments of the disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the disclosure. Obviously, the described embodiments are only some of the embodiments of the disclosure, not all of the embodiments. On the basis of the embodiments of the disclosure, all other embodiments obtained on the premise of no creative work of those skilled in the art shall fall within the protective scope of the disclosure.
As shown in
The body 1 comprises a main body 11 and a rocker arm portion 12; a battery 111, a motor 112 and an eccentric shaft 113 are disposed in the main body 11 in sequence; the rocker arm portion comprises an upper cover 121, a lower cover 122, and a rocker arm 123 disposed in the upper cover 121 and the lower cover 122 via a rocker arm shaft 124; the motor 112 is powered by the battery 111 under the control of a switch 114; and the motor 112 drives the eccentric shaft 113 to rotate, and the eccentric shaft 113 drives the rocker arm 123 to swing.
The cutting head 2 comprises: a blade rest 21, a movable blade 22, a fixed blade 23 and a blade supporting piece 24, the blade rest 21 being fixed to the end portion of the rocker arm portion 12.
The blade rest 21 comprises a bottom surface and two end side faces, and the movable blade 22, the fixed blade 23 and the blade supporting piece 24 are disposed in sequence from the bottom surface of the blade rest 21, wherein the blade supporting piece 24 is of a rectangular plate shape, and is attached to a blade body part, outside blade teeth, of the fixed blade 23 as a skin contact surface of the cutting head 2, the bottom surface and two side faces of the blade rest 21 are enclosed to form a frame, and the fixed blade 23 and the movable blade 22 are fixed in the frame.
Specifically, the fixed blade 23 and the blade supporting piece 24 are fixed with the blade rest 21 via screws 25. An elastic piece 26 is further disposed between the movable blade 22 and the blade rest 21 and is configured to tightly press the movable blade 22 to the fixed blade 23. The movable blade 22 can move left and right with respect to the fixed blade 23, a blade tooth edge of the movable blade 22 is correspondingly overlapped with that of the fixed blade 23, and when the movable blade 22 performs left-right reciprocating movement with respect to the fixed blade 23, the blade tooth edges of the two blades form a shearing surface.
The fixed blade 23 is an ultrathin fixed blade, and the thickness of the fixed blade is between 0.05 mm and 0.25 mm. The blade supporting piece 24 has a function of supporting the fixed blade 23 so as to avoid deformation caused by too-small thickness in usage.
Optionally, an elastic piece is disposed on a surface, adjacent to the movable blade 22, of the blade rest 21. That is, the elastic piece and the blade rest 21 are not split, but the elastic piece is disposed on an inner surface of the blade rest 21 instead and is configured to tightly press the movable blade 22 against the fixed blade 23.
The embodiment provides a novel personal care trimmer having an ultrathin fixed blade, which is of another structure. The structure of the personal care trimmer of the embodiment is approximate to that of the first embodiment. The difference only lies in that a blade rest is not provided in the embodiment, and the structures of the two blade supporting pieces are different.
As shown in
In the embodiment, an elastic piece 36 configured to tightly press the movable blade 32 against the fixed blade 33 is further disposed between the blade supporting piece 34 and the movable blade 32. Or, an elastic piece 36 is disposed on a surface, adjacent to the movable blade, of the blade supporting piece 34, and is configured to tightly press the movable blade 32 against the fixed blade 33. The blade supporting piece 34 further comprises two end face fasteners which match two ends of the C-shaped blade supporting piece 34 respectively, such that the blade supporting piece 34 becomes a frame, similar to a structure formed by enclosing the blade rest 21 and the blade supporting piece 24 in the first embodiment.
The embodiment provides a personal care trimmer having an ultrathin fixed blade, which is of another structure. The structure of the personal care trimmer of the embodiment is approximate to that of the first embodiment. The difference only lies in that the structures and installation positions of the two blade supporting pieces are different.
As shown in
Preferably, an elastic piece 46 configured to tightly press the movable blade 42 against the fixed blade 43 is further disposed between the blade rest 41 and the movable blade 42. Or, an elastic piece is disposed on a surface, adjacent to the movable blade 42, of the blade rest 41, and is configured to tightly press the movable blade 42 against the fixed blade 43.
The embodiment is structurally similar to the first embodiment. The difference only lies in that: combination manners of fixed blades, movable blades and blade supporting pieces are different.
Specifically, as shown in
More specifically, two pin holes 57 of which the radial sizes are equal to those of metal pins 56 are provided at the corresponding positions of the blade supporting piece 54 and the fixed blade 53, two through grooves 58 of which the radial sizes are farther larger than those of the metal pins 56 are provided at the corresponding position of the movable blade 52, the two metal pins 56 pass through the blade supporting piece 54, the fixed blade 53 and the movable blade 52 in sequence, the two metal pins 56 are fixedly welded with the pin holes 57 of the fixed blade 53 and the blade supporting piece 54 in a laser welding manner, and the movable blade 52 can move left and right with respect to the fixed blade 53.
The embodiment is structurally similar to the first embodiment. The difference only lies in that: sequences of fixed blades, movable blades and blade supporting pieces are different.
As shown in
The embodiment provides a personal care trimmer having an ultrathin fixed blade, which is of another structure. The structure of the personal care trimmer of the embodiment is approximate to that of the first embodiment. The difference only lies in that the structures and installation positions of the two blade supporting pieces are different.
As shown in
The embodiment is structurally similar to the fifth embodiment. The difference only lies in that: combination manners of fixed blades, movable blades and blade supporting pieces are different. The fixed blade herein is fixed with a blade rest in a laser welding or plastic column hot-melting manner. That is, screw fixing is changed into laser welding or plastic column hot-melting fixing. The fixing principle is identical to that of the fourth embodiment.
In each of the above embodiments, the blade supporting piece cannot shield cutting edge parts of the fixed blade and the movable blade regardless of the shape.
The disclosure may be transformed in many ways without limits to the above embodiments. For instance, fixing between the fixed blade and the blade supporting piece and/or the blade rest may be, but is not limited to screw fixing or laser welding fixing or similar rivet fixing, fixing of all components in a hot-melting manner by replacing screws or metal pins with plastic columns.
The personal care trimmer in all of the above embodiments adopts an ultrathin fixed blade capable of trimming long hair in place once, the trimming position and length are more accurate, and the operation is easier. In addition, contact surfaces between blade teeth and hair are small, and accordingly, stimulation to skin is little during hair trimming, thereby improving the experience degree of a user. Meanwhile, a blade supporting piece is adopted to support the ultrathin fixed blade or a movable blade, such that the fixed blade or the movable blade can be prevented from deforming.
As shown in
As shown in
Step 1: A coiled material is cut to form a blade blank 8 on the coiled material using a plate shearing machine, wherein the size of the blade blank 8 is slightly larger than that of a needed fixed blade, a plurality of blade blanks 8 is cut on the coiled material at one time generally, and adjacent blade blanks 8 are connected via a material belt.
Step 2: The surface of the blade blank 8 is cleaned and treated, and oil stain and an oxidation film on the surface of the metal blade blank 8 are removed.
Step 3: An anti-corrosion protective layer is manufactured on the surface of the blade blank 8. Specifically, photosensitive materials are printed in a blade region 81 on the surface of the blade blank 8 according to the blade design, the photosensitive materials being photosensitive glue or photosensitive emulsions or photosensitive films. Illumination is accepted, and the photosensitive materials in the blade region react chemically under the action of light, such that an illumination part forms a glue film acid-proof layer namely the anti-corrosion protective layer. As shown in
Step 4: The surface of the blade blank 8 is etched using a chemical solution, an etching region being a non anti-corrosion protective layer region namely a non-blade region 81. After etching, metal in the non-blade region 81 is dissolved and eroded so as to obtain the ultrathin fixed blade 83 having the blade teeth at the edge finally, as shown in
Step 5: The anti-corrosion protective layer on the surface of the ultrathin fixed blade 83 is removed. Specifically, the fixed blade 83 is soaked into a sodium hydroxide solution so as to remove the anti-corrosion protective layer, the concentration of the sodium hydroxide solution being 40 to 60 g/L, the temperature of the sodium hydroxide solution being 50 to 80° C. The obtained fixed blade 83 can be directly used or after-treated. General after-treatment refers to electroplating the fixed blade 83 with titanium metal. After Step 6 is completed, the material belt is cut off along material connecting positions at two side edges of the fixed blade 83 to obtain a single fixed blade 83.
As shown in
Preferably, when the photosensitive materials are printed at the saw-toothed edges, the saw-toothed edges on the front and back surfaces of the blade blank 8 are staggered, and a projection of a printing region on the front surface to the back surface totally covers a printing region on the back surface, and after etching is completed, blade teeth at the edge of the fixed blade 83 form a sharp cutting edge 85. The shearing capacity of the fixed blade 83 is greatly improved.
In the disclosure, the ultrathin fixed blade is manufactured using a metal etching technology, and the fixed blade 83 having the blade teeth at the edge can be obtained, the blade teeth forming the sharp cutting edge 85. Physical contacts are not needed in the process of manufacturing the fixed blade 83, the fixed blade 83 cannot deform, and the process is applicable to manufacturing of various ultrathin fixed blades.
The ultrathin fixed blades in the first embodiment to the seventh embodiment can be manufactured using the manufacturing method in the eighth embodiment. Photosensitive materials are printed in a blade region on the surface of a blade blank; under the action of illumination, the photosensitive materials in the blade region react chemically so as to form an anti-corrosion protective layer; and then a region of a non anti-corrosion protective layer is etched to obtain an ultrathin fixed blade having blade teeth at the edge. In the disclosure, an ultrathin tool is manufactured using a photochemical metal etching method without physical contacts, such that tool deformation is avoided, a sharp cutting edge of the tool can be ensured, and the shearing capacity of the tool is improved.
The above embodiments are only used to illustrate the technical solutions of the disclosure without limitations. Although the disclosure is illustrated in detail with reference to the preferred embodiments, those skilled in the art shall understand that the technical solutions of the disclosure can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions. The modifications or equivalent replacements shall fall within the scope of the claims of the disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201510514702.6 | Aug 2015 | CN | national |
