[invention Title] HAIR CLIPPER BLADE ASSEMBLY

[Technical Field] The present invention relates to an electric hair clipper blade assembly having a guide plate connected with a fixed blade and a movable blade that moves in left and right directions and a horizontal direction and a connection/fixed member. In particular, the present invention relates to an electric hair clipper blade assembly having fixed and movable blades with depths deeper than those of conventional fixed and movable blades and a blade body DLC-coated, on which a portion of the guide plate, the fixed blade, and the movable blade are formed, to maintain the best cutting power in cutting the short hair or the curly hair.

[Background Art]

Usually, a conventional electric hair clipper includes a fixed blade, a movable blade being movable in a horizontal direction to cut hairs, and a plate for supporting the fixed blade and the movable blade, etc. At this time, the fixed blade is positioned on the front portion of the electric hair clipper, and the movable blade is located on the fixed blade to be piled on the fixed blade and moves in the left/right and horizontal directions by an operation of an electric motor, to cut hairs. However, in a conventional hair clipper blade, the fixed blade has comb teeth of a shallow depth. The comb teeth having the shallow depth provide an average cutting power, but in cutting the short hair or the curly hair, it was problem to obtain the desired hair length and the best cutting power. In addition, in a case of the hair clipper blade, abrasion of the hair clipper blade and a large noise occur due to friction power of the movable blade and the fixed blade, which have a metal component. When diminishing an adhesive degree between the movable blade and the fixed blade for reducing the friction power, there was a problem that the hair is not normally cut.

FIG. 1 is perspective view of a conventional hair clipper blade assembly having an oilless metal filed by an inventor of the present invention.

The conventional hair clipper blade assembly is described in detail referring to FIG. 1.

First, a fixed blade 10 is fixed in a supporting bracket 15. A movable blade 20 is positioned on the fixed blade 10. Also, the movable blade 20 is fixed by an engineering plastic 25, and thereby fixed in a front portion of the engineering plastic 25 by a rotation movement of a motor not shown transmitted through an eccentric cam so as to be located on the fixed blade 10. Thereby, the movable blade 20 is adhered to the fixed blade by a coil spring. The oilless metal 50 is inserted into a groove portion 251 formed in a rear portion of the engineering plastic 25 and equipped with the groove portion 251, such that the movable blade 20 coupled with the front portion of the engineering plastic 25 is capable of sliding on the fixed 10.

It is similar to an embodiment of an prior art submitted by an applicant of the present invention that an implantation surface is formed in a middle portion of an etching blade formed on an end of the movable blade 20, an etching implantation surface is formed between the etching blades of the movable blade 20 to prevent that hairs or residuum thereof are inserted between the movable blade 20 and the fixed blade 10. However, in the present invention, the length of the movable blade 20 of the hair clipper with oilless metal is minimized and the length of the movable blade 20 manufactured by an etching process and having a thickness of 0.4mm is 20-30% with respect to that of the fixed blade 10, to have an effective cutting power without oil. In other words, a feature of the prior art was to include the movable blade with the minimized magnitude, that is, the minimized length. The oilless metal inserted into and connected with the rear-lower portion of the engineering plastic was inserted into the fixed blade with a guide formed on a top portion thereof and was sudden, and the movable blade moved in left and right directions. Thereby, it was able to provide the hair clipper with the totally good horizontal power.

[Disclosure] [Technical Problem] However, the construction of the conventional prior art needs the oilless metal and additional elements for inserting and coupling the oilless metal, so as to increase a difficulty in manufacturing the hair clipper blade assembly. In addition, since the depth of the movable blade and the fixed blade is not enough, limits have in hair styles such as the curly hair that the cutting is hard. The movable blade is able to move in the left and right directions by the oilless metal to provide the hair clipper blade having a totally good horizontal power. However, in high speed rotating, heat occurrence and abrasion problems due to surface friction between metals are still remained.

The present invention has been made to solve the above problems, and the first object of the present invention is to provide a hair clipper blade assembly that a depth of the comb teeth of the fixed blade is twice than that of a fixed blade of a prior art to improve guiding or holding functions of hairs and to be easy the cutting of the curly hair as well as the straight hair.

The second object of the present invention to provide a hair crippler blade assembly with improved abrasion resistance and heat resistance by coating a body surface forming a blade with DLC (diamond-like carbon).

The third object of the present invention to provide a hair crippler blade assembly having an end portion of a hair clipper blade designed by a rounded shape to give soft contact feeling with the scalp a user and to prevent possibility of danger in advance in contacting with the end portion and hairs.

[Technical Solution]

A hair clipper blade assembly according to the present invention to solve the above problems comprises a fixed blade assembled in a front end portion of a fixed blade body fixed by a supporting bracket, a movable blade assembled in and fixed to a front end portion of a movable body, and a coil spring adhering the movable blade to an upper surface of the fixed blade, wherein a comb teeth depth of the fixed blade and the movable blade deeper than a comb teeth depth (L) of a conventional fixed blade and a conventional movable blade, the comb teeth depth having the range of 2.2mm to 2.8mm such that the fixed blade and the movable blade have a construction that guiding or holding of hairs are easy in cutting the hair, so as to maintain the best cutting power in cutting the short hair and the curly hair.

In this case, it is characterized that the fixed blade and the movable blade have the comb teeth depth of 2L. It is characterized that surfaces of the fixed blade and the movable surface and a surface of the plate, on which the fixed blade and the movable blade are installed are coated by DLC (Diamond-Like Carbon film) .

In addition, it is characterized that front end portions of the fixed blade and the movable blade are rounded to have predetermined curvature.

[Advantageous Effects]

To provide the hair clipper blade assembly according to the present invention having the construction for solving the problems have effects as below.

First, it is to provide an effect that it is easy to cut the curly hair as well as the straight hair since the depth of the comb teeth of the hair clipper blade is twice than that of a prior art to improve guiding or holding functions of hairs. Second, it is to provide an effect to improve abrasion resistance and heat resistance by coating a body surface forming the hair clipper blade with DLC (diamond-like carbon).

Third, it is to provide an effect to give soft contact feeling with the scalp a user and to prevent possibility of danger in advance in contacting with the end portion and hairs by designing an end portion of a hair clipper blade as a rounded shape.

[Brief Description of the Drawings]

FIG. 1 is a perspective view of a hair crippler blade assembly equipped with an oilless metal according to a prior art.

FIG. 2 is a top view, a boom view, and a lateral view of a fixed blade and a fixed blade body according to a first embodiment of the present invention.

FIG. 3 is a top view, a boom view, and a lateral view of a movable blade and a movable blade body according to a first embodiment of the present invention.

FIG. 4 is a perspective view of a fixed blade and a fixed blade body according to a second embodiment of the present invention. FIG. 5 is a perspective view of a movable blade and a movable blade body according to a second embodiment of the present invention.

FIG. 6 shows a guide plate and a fixed plate according to the present invention. FIG. 7 is a perspective view of a hair crippler blade assembly according to the present invention.

FIG. 8 is a drawing showing an example of a DLC coating process according to the present invention.

<Description of the reference numerals in the drawings> 100: hair crippler blade assembly 200: fixed blade body 210: fixed blade 300: movable blade body

310: movable blade 400: guide plate

[Best Mode]

Hereinafter, embodiments of the present invention will be described in detail referring to drawings.

FIG. 2 is a top view, a boom view, and a lateral view of a fixed blade and a fixed blade body according to a first embodiment of the present invention, FIG. 3 is a top view, a boom view, and a lateral view of a movable blade and a movable blade body according to a first embodiment of the present invention, FIG. 4 is a perspective view of a fixed blade and a fixed blade body according to a second embodiment of the present invention, FIG. 5 is a perspective view of a movable blade and a movable blade body according to a second embodiment of the present invention, FIG. 7 is a perspective view of a hair crippler blade assembly according to the present invention, and FIG. 8 is a drawing showing an example of a DLC coating process according to the present invention.

First, referring to FIG. 7, a detailed construction of a hair crippler blade assembly 100 according to the present invention is as bellow. The construction of the assembly 100 is largely divided into a fixed blade body 200, a movable blade body 300, a guide plate 400, and a coil spring (not shown). The fixed blade body 200, the movable blade body 300, the guide plate 400, and the coil spring are assembled in a longitudinal direction by assembly members such as a bolt and a coupling shape described later and are fixed in the total hair crippler body and a supporting bracket (not shown).

Next, each portion forming the assembly 100 will be described in detail.

First, referring to FIGs. 2 and 4, the fixed blade body 200, on which the fixed blade 210 is formed will be described. The fixed blade 210 includes comb teeth formed on a front end of the body 200. The comb teeth have a predetermined depth. Body fix bolt holes 220 for fixing a body of a hair crippler fixed blade 210 are formed on a lower end of the body 200, and bolt holes 230 for fixing the guide plate are formed on the middle portion of the lower end.

In the present invention, as shown, the depth of the comb teeth of the fixed blade 210 is deeper than that of a fixed blade 210 of a prior art, and thereby as the deeper depth of the fixed blade 210, guiding or holding functions of hairs are improved in cutting the hair, such that the cutting the hair becomes to be easy. Therefore, the cutting of curly hair as well as straight hair may be easy, as compared to a hair crippler of the prior art. In addition, in shortly cutting the hair, the best cutting power may be maintained.

When it is assumed that the comb teeth depth of the fixed blade of the conventional comb teeth is L ₂ , it is preferable that the comb teeth depth of the fixed blade 210 according to the present invention have 2L ₂ . That is, the comb teeth depth of the fixed blade according to the present invention is twice than that of the fixed blade of the prior art, and it is preferable that the comb teeth depth of the fixed blade according to the present invention have the range of 2.2mm to 2.8mm.

Meanwhile, by designing the front end portion as a rounded shape with predetermined curvature, it is preferable that contact feeling with the scalp of a user is softer in cutting the hair and possibility of danger is prevented in advance, when an end portion of the fixed blade 210 contacts to the hair. Consequently, referring to FIGs. 3 and 5, the movable body 300, on which the movable 310 formed will be described. The movable blade 310 is installed on an upper surface of a guide portion 380 in a front end portion of the movable body 300. The movable blade 310 has a blade shape and is capable of moving in left and right and horizontal directions. Body fix bolt holes 320 are formed in left and right portions of the middle portion of the movable body 300. A hole 340 is formed in the middle portion of the movable body 300. The hole 340 has an elliptical shape to overlap a front end groove 440 of the guide plate 400. Assembly supports 350 for coupling with the hair crippler body are formed in the left and right end portions of the lower end of the movable body 300, respectively. Each assembly support 35 has a predetermined height and an extended length. Also, horizontal widths of the front end portion of the fixed blade body 200, on which the fixed blade 210 is fixed and the front end portion of the movable blade body 300, on which the movable blade 310 is fixed may be equal or similar to horizontal widths of the lower end portion and the middle portion, as shown in FIG. 3. Alternatively, right and left portions of the front end portions of the fixed blade body 200 and the movable blade body 300 may be extended in a horizontal direction to enlarge horizontal widths of the front end portions of the fixed blade body 200 and the movable blade body 300, as shown in FIG. 5. In this case, when it is assumed that the comb teeth depth of the fixed blade of the conventional comb teeth is L ₂ , it is preferable that the comb teeth depth of the fixed blade 210 according to the present invention have 2L ₂ . That is, the comb teeth depth of the fixed blade according to the present invention is twice than that of the fixed blade of the prior art, and it is preferable that the comb teeth depth of the fixed blade according to the present invention have the range of 2.2mm to 2.8mm.

The movable blade 310 is adhered toward the front portion of the fixed blade 210 and is capable of sliding on the front portion of the fixed blade 210 by the coil spring. In this case, an end of the coil spring is connected with the supporting bracket (not shown) forming the hair clipper and another end of the coil spring is connected with a portion of the movable blade body 300 and the guide plate operating along with the portion. Thus, the horizontal and left/right movements of the movable blade 310 are possible. That is, the movable blade 310 performs the horizontal and left/right movements through an eccentric cam by motor rotation, and the coil spring functions an intermediation for the movements.

As shown in FIG. 6, the guide plate 400 has a T-shaped plate structure. The guide plate 400 includes the groove 440 formed on an upper end of the guide plate 400 and a fixed bolt hole 420 formed on a lower end of the guide plate 400, into which a fixed bolt 470 is inserted. The groove 440 has a rounded and squared shape and overlapping a center groove 340 of the movable body 300. The fixed bolt hole 420 is connected and adhered to the fixed plate 460. Thereby, the guide plate 400 is fixed to the movable body 300 and the fixed blade body 200 and operates along with the movable body 300 to function the intermediation for a horizontal movement of the movable blade 310.

The assembly processes of the fixed blade body 200, the movable blade body 300, and the guide plate 400 will be described with reference to FIG. 7, which shows a perspective view. First, the movable body 300 having the moveable blade 310 formed thereon is overlapped the upper end of the fixed blade body 200, on which the fixed blade 210 is formed, and thereby a lower surface of the movable 310 is adhered on an upper surface of the fixed blade 210 to be coupled to each other. Next, after the guide plate 400 is overlapped the upper surfaces of the middle portions of the fixed blade body 200 and the movable blade body 300, the fixed blade body 200, the movable blade body 300, an the guide plate 400 are assembled as one body by inserting the bouts 470 into a guide plate bolt hole 420 and screwing. In this time, it is preferable to more improve unifying force by overlapping the fixed plate 460 having holes corresponding to the bolt holes 420 and the lower end of the guide plate 400, and inserting the fix bolts 470 into the bolt holes 420. Thus, the fixed blade body 200, the moveable body 300, the coil spring, and the guide plate 400 are assembled in the longitudinal direction to manufacture the hair clipper blade assembly 100 according to the present invention. In this case, as shown, the comb teeth depth of the fixed and movable blades according to the present invention is twice, as compared to the prior art.

An operation of the hair clipper blade in the hair clipper assembly 100 will be described in brief. The movable blade 310 is adhered to the upper surface of the fixed blade 210 by the coil spring to be capable of sliding on the fixed blade 210. The movable blade 310 is fixed to the front end portion of the movable body 300. The movable body 300 moves in left and right directions through a rotation movement of a motor and an eccentric cam not shown, to perform a horizontal movement and cut the hair. At this time, in the horizontal movement of the movable blade 310, since a shape of the guide plate 400 limits a movement range of the movable blade 310 within the a predetermined horizontal direction range, the cutting the hair becomes to be easy.

Except for the construction and shape characteristics, since the total hair clipper construction is equal to that of the prior art and cutting processes of the hair clipper is also equal to those of a prior art, descriptions of portions not relative to technical characteristics of the present invention are omitted. Meanwhile, in the present invention, the surfaces of the fixed and movable blades and the surface of the plate, on which the fixed and movable blades are fixed, are coated by DLC (Diamond- Like Carbon film) to improve abrasion resistance and heat resistance. Thereby, by minimizing heat occurrence in vibrating with high speed, convenience of customers is more improved.

DLC is an amorphous material and has a structure mixed with spl, sp2 , and sp3 hybrid orbitals. Since properties of hardness, corrosion resistance, abrasion resistance are similar to diamond, the DLC is called "Diamond-like Carbon". The DLC is also called DFC, and the DFC is abbreviated of "Diamond like Carbon". The DFC is named a plasma coating based on carbon like the DLC.

The DLC coating has properties of good hardness, abrasion resistance, electric insulation, high light transmission, and reflection. Since chemical stability of a surface is good, the LDC coating is strong against corrosion and has good adhesion resistance with another metal. Also, since the properties of the DLC coating have the low coefficient of fraction less than 0.1 nearly similar to MoS2 that is a solid lubrication film, abrasion between a film of the DLC coating and anther material is largely decreased, as compared to other hard thin film.

The coating working processes are performed through sequential processes of order of stock-in, import inspection, pre-treatment process, holding process, gauging process, coating process, production inspection, packing process, and stock-out. Foreign matters and oil-residuum on the surface of a product are removed in the pre-treatment process, and preferably, in gauging process, gauging equipments adaptive to a product shape are used. A processing time of about 1 minute and 30 seconds to 2 minutes and 30 seconds is required for the coating process. Next, referring to FIG. 8, an example of a coating method will be described.

As shown, in DLC coating, there are a coating method with an adhesive layer and a coating method without the adhesive layer. In coating method with the adhesive layer, after an adhesive strengthening layer and a buffer layer on an upper surface of a mother material are formed, the DLC surface treatment is performed. Otherwise, in the coating method without the adhesive layer, the DLC surface treatment is directly performed on the upper surface of the mother material. After the hair clipper blade assembly is assembled through the construction and the assembly processes, the hair clipper blade assembly is combined with the total hair clipper body and the supporting bracket, to have a shape to be useful.

While this invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. [industrial availability]

The present invention relates to hair clipper assembly.

Recently, hair cutting processes using scissors have been rapidly replaced with an electric hair appliance having an up- to-date hair clipper blade. Also, it trends that homes prepare electric hair appliances due to convenience of use increase. In addition, since the present invention improves the comb teeth depth and the blade shape, the usefulness and industrial availability of the hair clipper assembly of the present invention will be more increased.