JPS608314B2 - How to manufacture the outer blade of an electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing an outer cutter for an electric razor, and the structure of the outer cutter obtained by this invention can be any one of a flat outer cutter with a uniform thickness and a curved outer cutter with a uniform thickness. An arbitrary convex part is formed in the part to increase the strength.

The cross-sectional structure of the outer blade of a conventional electric razor consists of a bone 1 having a cutting edge and a hair introduction hole 2, as shown in FIG.

Although the thickness of the bone 1 is equalized on the chick surface, the thickness is very thin. Therefore, it is very susceptible to deformation of the presser foot, and when shaving facial hair near the jawbone and cheekbones of the face, the outer blades become indented, making shaving uncomfortable, and there is a risk that the outer blades will be damaged. was. As a measure to prevent deformation during shaving, a method is generally used to thicken the bone 2 over the entire shaving surface, but with this method, the thickness of the bone 2 exceeds the optimal thickness of the outer blade. It had the disadvantage that it left unshaved hair and did not provide a comfortable shave. However, the present invention essentially improves these drawbacks, and as described above, the surface of the external heat having a flat surface with a uniform thickness and the surface of the outer cutter having a curved surface with a uniform thickness are plated. This is intended to increase the strength of the outer cutter by forming a convex part, and its shape is shown in Figures 2 and 3, and Figure 3 is a cross section of the A bar in Figure 2. It is a diagram.

The part corresponding to 3 in Fig. 2 is the convex part of 4 shown in Fig. 3,
This figure illustrates an outer cutter in which convex portions are formed on the outer cutter surface having a uniform flat surface and a uniform curved surface. Hereinafter, the manufacturing method of the present invention will be explained in detail according to Examples.

The fifth is a sectional view showing a manufacturing method using plating according to the present invention. An insulating film 5 is formed on the front and back surfaces of a conventional outer cutter having a flat surface of uniform thickness or a curved surface of uniform thickness, except for the surface 6 of the portion where a convex portion is formed. Next, after performing the necessary pretreatment for plating, plating 7 is deposited to a desired thickness on the bone 1 serving as the base. Next, by peeling off the insulating film 5 using a film release agent, it is possible to manufacture an outer cutter having convex portions 4 partially on only the surface indicated by Z in FIG. 3. To explain the electrodeposited metal for plating, it is not particularly limited as long as it can be hazy-deposited, but it is desirable that it has the hardness and flexibility required for the outer blade, and it is preferable that it has the hardness and flexibility required for the outer blade, and it is preferable that it has the hardness and flexibility required for the outer blade. Therefore, it is best if it has excellent corrosion resistance. As described above, the outer cutter having the convex portion obtained by the manufacturing method of the present invention has high strength and is resistant to pushing force. In addition, since it has a convex part, when shaving, it stretches the skin and raises the beard, making it very effective at trapping long hair.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional outer cutter. FIG. 2 is a top view of the outer blade of the present invention. FIG. 3 is a sectional view taken along line A-A' in FIG. 2, showing an outer cutter manufactured according to the present invention. Figure 4,
FIG. 2 is a partially cutaway sectional view showing the manufacturing method of the present invention. 1...Bone, 2...Beard introduction hole, 3...Protrusion, 4
...Protrusion, 5...Insulating film, 6...
・・・・Part forming the front convex part, 7... Plating. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. On the back of the outer blade of an electric razor, an insulating film is formed on the entire surface, excluding the part where the convex part is formed, and the parts without the insulating film are coated with electrical objects using a plating method. A method for manufacturing an outer blade for an electric razor, characterized in that a convex portion having a desired thickness is provided.