JPS6115792Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an outer blade formed on an electric shaver, specifically an outer blade formed by an electrodeposition method.

For example, in this type of outer cutter used in a reciprocating electric shaver, a protrusion is formed on the main surface of the outer cutter base made of the final electrodeposited layer, and a large number of slits are formed in the protrusion. Accordingly, there is a device in which long hairs that tend to lie down are made to stand up on the ridges, and are effectively captured and sheared using the slits.

By the way, it cannot be denied that when the slits are formed, the mechanical strength of the protruding portion is reduced. For this reason,
It is necessary to maintain mechanical strength by forming the slit as wide as possible, but in this case, the ability to trap hair becomes worse.

This invention solves the above-mentioned drawbacks by forming pores large enough to prevent hairs from entering between the slits formed in the protrusions.

An embodiment of this invention will be described below with reference to the drawings.

FIG. 1 shows an outer blade of a reciprocating electric shaver. In the figure, 1 is a rectangular foil-shaped outer blade base formed by electrodeposition, and has a large number of hair introduction holes 2 over almost the entire area. Reference numerals 3 and 3 denote protrusions located at both ends of the outer cutter base 1 in the width direction and integrally formed along the longitudinal direction. This was done to raise the hair. Reference numeral 4 denotes a number of slits formed to intersect with the protrusion 3, and a number of pores 5 are formed between the slits 4 as shown in FIG. The pores 5 are formed to a size (40 microns or less) that does not allow hair to enter. 6, 6 are reinforcing plates, and 7 is a locking piece for attachment.

The electrodeposition process for the outer cutter will be explained as follows.

First, as shown in FIG. 3, an electrically insulating thin film 11 corresponding to the hair introduction holes 2 and pores 5 is formed on the main body of the conductive master 10. , 12 are formed by pressing on both ends of the master 10 as shown in FIG. Thereafter, the master 10 is immersed in an electrodeposition layer (not shown) to perform primary electrodeposition, and the master 10 is
As shown in FIG. 5, a primary electrodeposited layer 13 is formed on the main surface side of the substrate, protruding beyond the thickness of the thin film 11. Next, the second electrodeposited layer 14 constituting the outer blade base 1 is coated with the first electrodeposited layer 13 as shown in FIG. 6 in the same manner as described above.
By peeling off the secondary electrodeposited layer 14 formed thereon from the primary electrodeposition layer 13 as shown in FIG.
An outer cutter is obtained in which a portion corresponding to the primary electrodeposited layer 13 is recessed as a so-called countersink portion.

That is, in the outer cutter in which the slits 4 are formed in the protrusions 3, 3, a large number of pores 5 are formed between the slits 4.
In the portion 3, the cross-sectional arch-shaped portion is continuous, and the moment of inertia of the cross-section is large, so that the strength of the protrusions 3, 3 can be increased without narrowing the slit width.

Moreover, this outer cutter is used to raise curly hair and long hair that lie down on the protrusions 3, 3, and by providing pores 5 between each of the slits 4 that are large enough to prevent hair from entering, the above-mentioned The back surfaces of the protrusions 3, 3 have a finely uneven surface, and when the skin is slid against the skin during use, the skin digs into these fine rough surfaces, causing the protrusions 3, 3 to become uneven. In addition to the hair raising effect, it can further tighten the skin and make curly and long hair stand up from the root.

In this way, the pores 5 of the protrusions 3, 3, which are small enough to prevent hair from entering, not only improve the mechanical strength of the protrusions 3, 3, but also improve the mechanical strength of the protrusions 3, 3 due to the pores 5. The surface roughness can promote the original function of raising the protrusions 3, 3.

By the way, in the above embodiment, the protrusions 3, 3 are formed along the longitudinal direction of the rectangular foil-like substrate 1, but the extending direction of the protrusions 3, 3 is different from the above example. This is not limited to, and is not limited to the outer blades of reciprocating electric shavers, but also outer blades with slits formed in the ridges, such as the outer blades of rotary electric shavers and the outer blades of rotary electric shavers. All are applicable.

As described above, in this invention, slits are formed in the raised protrusions of the outer blade base composed of the final electrodeposited layer, and pores are formed between each slit. It is possible to improve the reinforcing effect of the part.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an example of the outer blade of the electric shaver according to this invention, Figure 2 is an enlarged view of the main parts of the outer blade, and Figures 3 to 7 show the electrodeposition process of the outer blade. It is an explanatory diagram. DESCRIPTION OF SYMBOLS 1... Outer blade base, 3, 3... Projection, 4... Slit, 5... Pore, 13, 14... Electrodeposition layer.

Claims (1)

[Scope of utility model registration request] Final electrodeposition layer 1 among the plurality of electrodeposition layers 13 and 14
This is an electric shaver in which protrusions 3, 3 for raising long hair are integrally formed on the outer cutter base 1, which is composed of 4, and a large number of slits 4 are formed intersecting with each of the protrusions 3, 3. An outer blade for an electric shaver in which pores 5 large enough to prevent hair from entering are formed between the slits 4 in the protrusions 3, 3.