JPS58103485A - Razor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The technical field of VSO relates to razors that shave by sliding a movable blade on the inner surface of a fixed blade, and in particular takes measures to eliminate the frictional resistance between the two blades. Regarding nine shavers.

TECHNICAL BACKGROUND OF THE INVENTION Conventionally, this type of shaver KN has a fixed blade, for example, a net-shaped outer cutter, and an inner cutter, which is a movable cutter that rotates or reciprocates on the inner surface of the outer cutter. It is like cutting the nine whiskers that fall within the mesh. Therefore, the above-mentioned double blades need to have hardness as a cutlery, and an N1 electroformed blade or a blade made by pressing a thin stainless steel plate is mainly used for the outer blade.
On the other hand, the inner blade is made of stainless steel. These double-edged blades have rounded contact parts that are polished to improve sharpness, but the amount of sliding resistance depends on the number of times they can be used after charging the battery.
This greatly affects the sharpness and the life of the outer blade, especially when using a reciprocating motion type, the energy loss due to reciprocating motion is large.
The magnitude of the sliding resistance mentioned above is a very big problem.
Conventionally, to prevent scratches, the outer blade was coated with oil when shipped.

Problems with the Background Art However, although the above methods have the effect of reducing resistance, they have drawbacks such as the oil turning black and sticking to the skin and smelling, and furthermore, when the outer blade is cleaned, the oil This had the disadvantage that it would come off and the sliding resistance would increase.

As the resistance increases, the load on the motor increases, the rotation speed decreases, and the cutting quality becomes poor.Also, the load current increases, which reduces the number of times the battery can be used after charging, and furthermore, the friction of the outer blade increases. It had drawbacks such as a short lifespan until breakage.

OBJECTS OF THE INVENTION The present invention has been made with attention to the above points, and an object of the present invention is to provide a shaving unit that can reduce the sliding resistance between the outer cutter and the inner cutter, thereby eliminating all the drawbacks of the conventional ones. The purpose is to

Summary of the Invention The present invention is characterized in that the contact portion between the fixed blade and the movable blade is coated with a soft metal.

Invention Otora Example An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a main body case, in which a driving motor P2 is housed together with, for example, a storage battery (not shown) as a power source, and a zero printing section 3 is provided at the top and a border printing section 4 is provided at the front. ing. The wood printing part 3 includes a nine outer blade case 5 that is removably provided at the upper end KW of the main body case 71, a thin plate-shaped outer blade 6 that is attached to the outer blade case 5 in an arc shape, and It is composed of an inner cutter 7 disposed on the inner surface side of an outer cutter 6, and a well-known motion conversion mechanism consisting of the inner cutter 7, a drive motor 2, an eccentric force 58, a moving member 9, etc. The traps are connected to each other via 10, and are reciprocated by the drive of the drive motor 2. The outer cutter 6 is, for example, mesh-like and has a large number of small holes 6a as the mesh. Therefore, as is well known, the main printing section 3 is suitable for shaving the beard on the face, mainly around the mouth, or on the chin. Cutting is performed by the outer cutter 6 and the inner cutter 7, which slides on the inner surface of the outer cutter 6. On the other hand, the edge part 4 includes a case part 11 attached to the front surface of the main case 1, a fixed blade 12 fixedly attached to the case part 11, and a supporting member 13 on the lower surface of the fixed blade 12. The support member 15 of the movable blade 14 is supported by the groove 9a of the movable member 9 of the motion conversion mechanism 10.
- removably fitted and connected), so that the movable blade 14 can reciprocate. Incidentally, the blade portions of the fixed blade 12 and the movable blade 14 have a comb-teeth shape as is well known. Therefore, as is well known, such edge-printing section 4 is suitable for shaving the edges of sideburns, bottles, etc., and in this case, the edges are shaved on the blades of the fixed blade 12 and the movable blade 14. It enters from the side or above and is cut. Now, as described above, a soft metal coating 15 is applied to the contact area between the outer cutter 6 and the inner cutter 7 of the main printing section 3.

By the way, shaving with the shaving section means:
In the case of the main printing section 3, as mentioned above, the whiskers that have entered the small hole 6a of the outer cutter 6 are cut by the shearing action of the outer cutter 6 and the inner cutter 7. Therefore, the outer cutter 6 and the inner cutter 7 It is desirable that the edges be both sharp and hard. However, through experiments and the like, it has been found that sliding hard metals against each other creates considerable resistance. Therefore, a soft metal coating 15 was applied between the two as described above.

When this pressure is applied, a soft metal is interposed between hard metals. Generally, when a soft metal and a hard metal are slid together, the hard metal bites into the soft metal, increasing the sliding resistance. But'l! According to Shume, it was found that if a thin film of less than 5 μm of soft metal was applied to the interface between hard metals, there would be no biting, and the soft metal would actually act more like a lubricant. It has been found that when the thickness exceeds 5 .mu.m, the metal digs in and the effect not only increases, but also causes a phenomenon in which the thin film peels off.

On the other hand, methods for coating 15 include plating, vapor deposition, sputtering, etc., but it has been found that vapor deposition or sputtering is the best method for reducing sliding resistance due to the uniformity and ease of forming a thin film. Especially in plating, 1 outer blade 6
, the edge of the inner blade 7 has a lot of Souga Hotaru, and the sharpness is ft.
It also had the disadvantage of making it more i.e. The coating metal is Au.

, Pb, In, Al, etc. were studied, and the battery load current values for six representative metals were as shown in FIG. 3. As shown in this figure, the load current was reduced by 40 to 120 (mA) compared to the case without coating, and the rotational speed was increased by 20 to 100 [rpm]9. Therefore, the sliding resistance was significantly reduced. I understand.

Moreover, these metal films enter the recesses of the outer cutter 6 and the inner cutter 7 by sliding, and the above-mentioned effect is maintained over a long period of time.

Since the thickness of the coating 15 is very thin, less than 5μ, it is safe to say that it will be less sharp than K.
On the other hand, the sharpness improved as the rotation speed increased.

Incidentally, if cost and non-toxicity are taken into account, it can be said that using aluminum or indium is optimal for VX-bar. Furthermore, although the coating 15 is effective whether it is applied to both surfaces of the outer cutter 6 or the edge portion of the inner cutter 7, it has been found that the effect is better on the inside of the outer cutter 6 for the following reason.

Firstly, the most uniform film can be produced by forming a thin film by vapor deposition or sputtering, but in this case the temperature rises to about 100°C. At this time, the inner blade 7 is generally made of stainless steel and fixed with a plastic mold, but since the mold part is deformed by heat, it is made of aluminum, zn, etc.
It must be made by die-casting, which increases the cost and vibration.

Second, since vapor deposition or sputtering has directionality, it is difficult to coat the circular inner blade 7 uniformly. Third, the outer blade 6 has a larger area to coat, which increases the amount of coating. It is effective in reducing sliding resistance! do.

Furthermore, when coating the outer cutter 6 by vapor deposition or sputtering, coating the entire outer cutter 6 rather than coating only the inner surface of the outer cutter 6 makes it difficult to see that the coating has spread to the outside of the outer cutter 6. It has the effect of being soft and feels good on the skin.

In addition, in general, in cases such as sliding resistance, it is said that if the resistance is slightly reduced, the wear will be greatly reduced).
In the present invention, the damage caused by the wear of the very thin outer cutter 6 can be reduced by 6K, and the life of the outer cutter 6 can be extended. Note that unlike applying oil, these effects do not change at all even if the outer cutter 6 and inner cutter 7 are washed, and the edge shaving portion 4iC
In this case, the contact area between the fixed blade 12 and the movable blade 14 corresponds to the contact area between the outer blade 6 and the inner blade 7 of the main printing section 5.

Effects of the Invention As described above, the present invention is capable of reducing the contact resistance between the two blades and the movable blade by simply applying a soft metal coating to the contact area between the blades and the movable blade. It is possible to increase the number of times that the blade can be used afterwards, extend the life of the outer cutter, and also improve cutting quality since the number of revolutions is high. In addition, unlike oil application, these effects are not temporary, and not only are the effects long-lasting, but they also have the effect of not causing deep stains or black stains.

Note that the present invention is not only applicable to a reciprocating type beard side part, but also to a rotating type beard side part.

[Brief explanation of the drawing]

The drawings are part of the invention! FIG. 1 is a cutaway front view, FIG. 2 is a cutaway side view, and FIG. 3 is a diagram summarizing experimental results. In the figure, 6 is the outer blade (fixed blade), 7 is the inner blade (movable blade), 12
14 is a fixed blade, 14 is a moving blade (movable blade), and 15 is coated. Applicant: Tokyo Shibaura Electric Co., Ltd. Tube 1 Figure 1 M2 Figure

Claims (1)

[Scope of Claims] 1. A device comprising a fixed blade and a movable blade that slides on its own so that the two blades can shave the beard, and the contact portion of the two blades is coated with a soft metal. A shaving machine that features nine alms. 2. The razor according to claim 1, characterized in that the coating is applied to the inner surface of the fixed blade. 3. Claim N, item 1 or 2, characterized in that the coating metal is aluminum or indium.
The shaving machine described in section. 4. The shaving machine according to any one of claims 1 to 3, wherein the coating is performed by vapor deposition or sputtering. 5. Claims 1 to 4, characterized in that the coating is applied to the outer surface of the fixed blade.
The shaving machine described in any of paragraphs. 6. The shaver according to any one of claims 1 to 5, characterized in that the coating is applied to a thickness of 5 [μ] or less! l.