JPH0113393B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an electric shaver in which a thin plate-shaped outer cutter is stretched along an inner cutter that reciprocates in the longitudinal direction, and the inner cutter is in sliding contact with the outer cutter. In particular, the present invention provides an outer cutter that has a high hair replenishment property for beards and is excellent in touch with the skin.

To this end, the present invention arranges a large number of protrusions with different protuberances in a row on both sides of the outer cutter along the direction of reciprocating movement of the inner cutter, and at the same time, in a flat part between adjacent protrusions. By providing a long hole for introducing long hair, the tension on the skin by the protrusions for raising and replenishing hair can be moderated, and long hair and curly hair can be activated to ensure hair raising. .

Embodiments of the present invention will be described below with reference to the drawings.

In Fig. 1, reference numeral 1 denotes a thin plate-shaped outer cutter, which is formed by etching, electroforming, or press working.
A reinforcing plate 2 made of elastic synthetic resin such as polyacetal resin or ABS resin is integrally attached by outsert molding, and at both ends of this reinforcing plate 2, an outer blade mounting frame (not shown) is attached. Elastic arms 3 each extending in the direction of arrow A.

On both sides of the outer cutter 1, that is, at positions along the reinforcing plate 2, hemispherical protrusions 4 ₁ , 4 ₂ , ... 4n are protruded in a row along the reciprocating direction of the inner cutter, which will be described later. , the protrusions 4 ₁ and 4n at both ends have the maximum amount of protrusion,
So that the central protrusion 4n/ ² has the minimum amount of protrusion.
The amount of protrusion decreases from both ends toward the center.

Further, in the plane portion between each of the protrusions _{4 1} , 4 _{2 ,} . . .
...5 _o-1 is bored, and the angle is preferably about 90°.

Further, a large number of small holes 6 for cutting short hair are bored from the rows of the protrusions 4 ₁ , 4 ₂ , .

As shown in FIG. 2, this outer cutter 1 is stretched in an arch shape along a substantially semi-cylindrical inner cutter 7, and this inner cutter 7 extends outward along the longitudinal direction A of the outer cutter 1. It reciprocates while making sliding contact with the blade 1.

However, if this electric shaver is applied to the skin H and slid in the directions of arrows B and B' as shown in FIG. 3, the following effects can be obtained.

First, when the condition of the skin H shown by the solid line in _FIG.
The skin H is tightened in an inclined manner from the to the small protrusions 4 ₂ , 4 ₃ . Because it is far from holes 5 ₁ , 5 ₂ ...,
Unnecessary hanging of the skin H can be prevented and the hair can be raised.

Next, move to the state of skin H indicated by the dashed line with arrow B.
As the outer cutter 1 moves in the direction, the tension at the same point on the skin H changes sequentially, and on the right side of Fig. 3, the skin part that had previously had a weak tension reaches the maximum tension. will be done.

In other words, the state indicated by the dashed line is the opposite of the state shown by the solid line. Next, by sliding the outer cutter 1 in the direction of the dashed-dotted arrow B', the state changes to the opposite of the above, and by repeatedly sliding it in the directions of the arrows B and B',
The tension of the skin H is changed repeatedly, and the hair is introduced into the elongated hole 5 while making the skin H flexible.

This kind of raising effect caused by repeated tension on the skin becomes more pronounced as the amount of protrusion of the hemispherical protrusions 4 ₁ , 4 ₂ , . . . , 4n increases. It is also possible to repeatedly change the row of protrusions 4 ₁ ′, 4 ₂ ′, . In particular, in order to efficiently introduce the raised hair into the elongated holes 5', the elongated holes 5' should be bored parallel to the row of protrusions; It will have to be drilled.

Furthermore, the most preferable protrusion shape is a hemispherical shape, because when the outer cutter 1 moves, the raised long bristles easily turn around and move along the spherical surface, and can be prevented from being knocked down again. From this point of view, a rounded cubic or ellipsoidal shape may be acceptable, but a rectangular shape is not so preferred.

Protrusions 4 ₁ that exert such a skin tension effect,
4 ₂ , . . . 4n receive pressing force from the skin H, and this pressing force is received in proportion to the amount of protrusion of the protrusions 4 ₁ , 4 ₂ , . . . 4n. In order to do this, the protrusions 4 ₁ and 4n at the position closest to the attachment means (elastic arm 3 in FIG. 1) for attaching the outer cutter 1 to the outer cutter holder are increased in protrusion. As a result, the pressing force can be reliably received, the outer cutter 1 can be prevented from being deformed in a drum-like manner, and the state of sliding contact with the inner cutter 7 can be made uniform.

In an electric shaver in which a thin plate-shaped outer cutter 1 is stretched along an inner cutter 7 that reciprocates in the longitudinal direction, and the inner cutter 7 is in sliding contact with the outer cutter 1, on both sides of the outer cutter 1, _A large number of protrusions 4 ₁ , 4 ₂ . . . 4n, 4 ₁ ′, 4 _{2 ′} . 4 ₂
…4n, 4 ₁ ′, 4 ₂ ′…Long holes for introducing long hair 5 ₁ , 5 ₂ … 5 _o-1 , 5 ₁ ′, 5 ₂ ′… 5 _o
' _-1 allows the skin H to repeatedly change its tension level during normal use, thereby ensuring that long hair, especially curly hair facing in various directions, is raised and lengthened. An electric shaver having outer blades that can be introduced into the holes and has an excellent texture can be obtained.

[Brief explanation of drawings]

FIG. 1 shows an external view of the outer blade of an embodiment according to the present invention, FIG. 2 is a sectional view of a main part of the same embodiment, and FIG. 3 is a sectional view of the outer blade showing the operation of the embodiment. 1... Outer blade, 4 ₁ , 4 ₂ ... 4n, 4 ₁ ′, 4 ₂ ′... 4
n'...Protrusion, 5 ₁ , 5 ₂ ...5 _o-1 , 5 ₁ ', 5 ₂ '...5 _o ' _-
1
...Long hole, 7...Inner blade.

Claims (1)

[Claims] 1. In an electric shaver in which a thin plate-shaped outer cutter 1 is stretched along an inner cutter 7 that reciprocates in the longitudinal direction, and the inner cutter 7 is in sliding contact with the outer cutter 1, there are , a large number of protrusions 4 ₁ , 4 2 . . . 4n, 4 _{1 ′} , 4 ₂ ′ _. . . 4 with different protuberances along the reciprocating direction of the inner cutter 7
n′ are arranged in a row, and adjacent protrusions 4 ₁ ,
Long holes 5 ₁ , 5 ₂ ... 5 o-1 , 5 _{1 ′} , 5 2 ′ ... for introducing long hair are provided in the middle plane part of 4 ₂ ...4n, 4 1 _' , 4 ₂ '... _4n '.
5 _o ′ _-1 .