JPS6019266B2 - Reciprocating electric razor blade structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a flat plate-shaped outer cutter that can be bent into a semicylindrical shape, and a concave or convex bending strip that is parallel to the reciprocating sliding direction of the inner cutter.
A slit-shaped blade in which the inner blade has a concave or convex corresponding part corresponding to the bent line, and the concave or convex bent line extends to a flat part of the outer cutter other than the bent line. The present invention relates to the structure of a reciprocating electric razor blade in which a reciprocating electric razor blade is provided with a hole and the inner blade is reciprocally driven at the central portion in the longitudinal direction along its reciprocating direction.

In the structure of the reciprocating electric razor blade configured as described above, a long beard or curly beard is introduced into the slit-shaped blade hole extending from the bent strip to the flat part, and this is used as the outer blade. It has the advantage of being able to cut with the inner blade.

However, with this type of structure, a slit-shaped cutting hole extending from the bent strip to the flat part is provided, and the long inner cutter is driven at the center, so the outer cutter may be interfered with by the inner cutter and damaged. It has the disadvantage that it is easily damaged and can also cause strong irritation to the skin. In other words, in the case where the inner cutter is reciprocated at the center in the longitudinal direction along the reciprocating sliding direction, the amount of movement of the inner cutter in the front-rear direction, which is perpendicular to the driving direction of the inner cutter, is at the center where the inner cutter drive part is located. As shown in FIG. The inner cutter 2 enters into the slit-shaped cutter holes 6 on both ends in the cutting direction, damaging the outer cutter 1 and causing strong irritation to the skin. The present invention has been made in view of these conventional drawbacks.
The purpose of this is to make the distance from the side wall of the bent strip part to the corresponding part larger toward both ends of the inner cutter in the reciprocating sliding direction than at the center of the inner cutter, while making full use of the advantages of the conventional method. By doing so, interference between the inner cutter and the outer cutter can be suppressed,
To provide a structure of a reciprocating electric shaver blade that can prevent damage to the outer blade and reduce strong irritation to the skin.

The present invention will be described in detail below based on illustrated embodiments.

Reference numeral 1 denotes a flat outer cutter, which is bent into a semicylindrical shape and attached to the electric shaver main body 3 as shown in FIG.

The outer cutter 1 is provided with one or more bent stripes 4 over its entire length in parallel to the reciprocating sliding direction of the inner cutter 2. This bent strip 4 may be concave or convex. 8 and 9 show the convex case, and all other drawings show the concave case. Slit-shaped blade holes 6 are arranged in a row in the reciprocating direction of the inner cutter 2 from the bent strip 4 to the portion of the outer cutter 1 other than the bent strip 4 in the plan view 9. On the other hand, the inner cutter 2 is operatively connected to a drive section 13 provided in the electric shaver main body 3 at the central portion in the longitudinal direction along the sliding direction. In FIG. 2b, the ◯-0 line indicates the drive axis. The inner cutter 2 is formed by arranging a large number of blades 10 that are perpendicular to the sliding direction and have arched upper edges. A corresponding part 5 is provided in a concave shape or a convex shape corresponding to the curved line part 4.
In this case, the concave bending strip 4 is located within the concave and notch-shaped corresponding portion 5, and when the bending strip 4 is convex, the corresponding portion 5 becomes a convex super-shape, and the convex bending strip 4 is located within the convex bending strip 4. This is where the corresponding section 5 is located. In the plan view 9 of the outer cutter 1, a small hole 7 and a long hole 8 are provided. These small hole-like blade holes 7 and long hole-like blade holes 8 are both formed as a group, and the slit-like blade holes 6 and 4, the slit-like blade holes 7 group and the long holes provided in the bent strip 4 are formed as a group. The four groups of shaped blade holes 8 are partitioned and arranged in a direction perpendicular to the reciprocating sliding direction of the inner blade 2. In the embodiment shown in FIG. 3, in the direction orthogonal to the reciprocating sliding direction of the inner cutter 2, a bent strip 4 and a group of 6 slit-shaped blade holes attached thereto are provided at the center, and small hole-shaped blade holes 7 are provided on both sides. This is an example in which 8 groups of elongated blade holes are arranged on both sides of the group, and 7 groups of small hole-shaped blade holes are further arranged on both sides. When the reciprocating electric shaver is used, it is moved in a direction perpendicular to the sliding direction of the inner cutters 2.

Therefore, considering one point on the skin, the portion of the outer cutter 1 that comes into contact with this one point moves in a direction perpendicular to the sliding direction of the inner cutter 2. In other words, the blade hole changes from the most hole-like blade hole 8 to the small hole-like blade hole 7 to the slit-like blade hole 6. Although it is not possible to introduce long whiskers into the small-hole-shaped blade hole 7, short whiskers and whiskers that could not be cut short in the most-hole-shaped blade hole 8 and the slit-shaped blade hole 6 can be caught and cut into the inner blade 2. Cut it shorter in between and shave it. Most hole-shaped blade hole 8
Now, as shown in FIG. 4, the long hair that could not be introduced into the small hole-shaped blade hole 7 is introduced and cut. Bent striation 4
For example, if the bent strip 4 is concave, the slit-shaped cutter hole 6 from 1 to 9 in the plan view is made longer by stretching the skin of the part that is not in contact with the outer blade 1 surface by the bent strip 4, as shown in FIG. The beard 11 or the long beard 11 is raised and introduced into the slit-shaped blade hole 6. Figure 4 shows that as the electric razor is moved, the beard 11 moves from the right side to the left side.
It shows a state in which it is cut with the inner blade 2. Here, the slit-shaped cutting hole 6 is inclined with respect to the bent strip 4 in the plan view 9, and has a scissoring angle with respect to the blade 10 of the inner cutter 2 to improve cutting quality and improve the cutting quality of the outer cutter 1. This is intended to prevent interference between the inner cutter 2 and the inner cutter 2. It is preferable that the angle between the bent strip 4 and the plan view 9 be an obtuse angle as shown in FIG. 4 in order to ensure close contact between the outer cutter 1 and the inner cutter 2. In FIGS. 6 and 7, the bent strip portion 4 is formed in a concave shape, and the corresponding portion 5 of the inner cutter 2 is formed in a concave shape.

The groove Wb of the blade 10b located on both ends of the inner cutter 2 in the sliding direction is made larger in order than the groove Wa of the blade 10a on the central side of the inner cutter 2 in the barrel working direction. . In this way, by making the groove W of the corresponding part 5 larger towards both ends of the inner cutter 2 in the reciprocating sliding direction than the center part of the inner cutter 2, the inner cutter 2 can be moved closer to the center part as described above. As a result, even if the inner cutter 2 swings more toward both ends in the reciprocating direction in the direction perpendicular to the sliding direction,
Since the distance between the bent strip part 4 and the corresponding part 5 is larger at both ends in the reciprocating direction than in the center, interference between the inner cutter 2 and the outer cutter 1 at both ends in the reciprocating direction is prevented. It can be done. In addition, the inner cutter 2 inside the bent strip 4
The outer cutter 1 is not unnecessarily close to the outer cutter 1, and strong irritation to the skin can be suppressed. In particular, in the embodiment shown in FIG. 7, the radius of curvature R of the point A where the blade 10 portion of the inner cutter 2 corresponding to the plan view 9 of the outer cutter 1 and the corresponding portion 5 of the inner cutter 2 overlap is made larger toward both ends of the inner cutter 2 in the reciprocating sardine direction. That is, as shown in FIG. 7, the radius of curvature Ra of the blade 10a at the center of the inner cutter 2 is made larger by the radius of curvature Rb of the blades 10b located on both ends of the reciprocating sliding movement in all directions. According to this configuration, the inner cutter 2 at both ends in the reciprocating sliding direction is added to the same machine as the above-mentioned embodiment.
It is possible to prevent interference of the outer cutter 1 with the outer blade 1, and at the same time, it is possible to suppress strong irritation to the skin. In such an embodiment, by changing the radius of curvature R at the corner portion of the inner cutter 2, the distance from the side wall 12 of the bent strip 4 to the corresponding portion 5 facing the side wall 4 can be adjusted to the center portion of the inner cutter 2. The inner cutter 2 is made larger toward both ends in the reciprocating sliding direction. In such an embodiment, in the embodiment shown in FIG.
As in the embodiment shown in the drawings, a structure may be added in which the groove W in the corresponding portion 5 is made larger toward both ends in the reciprocating direction of the tank movement than the center portion. The embodiment shown in FIGS. 8 and 9 has a bending strip 4
is formed in a convex shape, and the corresponding portion 5 of the blade 10 of the inner cutter 2 is formed in a convex shape.

And the blade 10 on the center side of the inner cutter 2 in the direction of reciprocating tank movement.
The Yamanaka Mb of the blade 10b located on the both ends of the reciprocating sliding surface of the inner blade 2 is made smaller in sequence than the convex super-shaped Yamanaka N of the corresponding portion 5 of a. By changing the center point M of the corresponding part 5 in this way, the distance from the side wall 12 of the bent strip part 4 to the corresponding part 5 opposing this can be adjusted from the center of the inner cutter 2 in all directions for reciprocating sliding of the inner cutter 2. It is made larger towards both ends. In yet another embodiment shown in FIG. 9, the radius of curvature R of the convex super-shaped portion is increased toward both ends of the reciprocating sliding movement of the inner cutter 2, similar to the embodiment shown in FIG. By changing the radius of curvature R of the convex super-shaped portion in this way, the distance from the side wall 12 of the bent strip section 4 to the corresponding section 5 opposing this can be adjusted from the center of the inner cutter 2 to the reciprocating super movement of the inner cutter 2. It is made larger towards both ends. In such an embodiment, as in the embodiment shown in FIG. 8, a configuration may be added in which the convex peak M of the facing portion 5 is made smaller toward both ends in the reciprocating sliding direction from the center. Thus, in the present invention, a bending strip is provided on the outer cutter, which is freely bendable in a semicylindrical shape, in parallel to the direction of reciprocating sliding of the inner cutter, and a corresponding portion corresponding to the bending strip is provided on the inner cutter. By providing the outer blade with a slit-shaped hole that extends from the upper part to the flat part, long beards and curly beards can be introduced and cut efficiently using the bent strips and the slit-shaped blade hole. According to the present invention, the distance from the side wall of the bent strip portion to the corresponding portion opposite thereto is made larger toward both ends of the inner cutter in the reciprocating sliding direction than at the center of the inner cutter. By adopting a structure in which the inner cutter is driven at both ends in the reciprocating and shored direction, even if the inner cutter swings more greatly in the direction perpendicular to the port motion, the inner cutter at both ends in the reciprocating and reciprocating sliding direction is more oscillated than the center. Also, the distance between the bent strip and the corresponding portion is large, which prevents the inner cutter from interfering with the outer cutter at both ends in the reciprocating sliding direction, and also prevents the inner cutter from unnecessarily approaching the outer cutter within the bent strip. It has the advantage of suppressing strong irritation to the skin.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partially cutaway side view of one embodiment of the present invention, Figs. 2 a and b are perspective views of the outer cutter and inner cutter of the same as above, and Figs. 3 a and b are the same as above. 4 is an enlarged sectional view showing the same effect as above, FIG. 5 is a sectional view showing the effect of the conventional example, and FIG. 6 is a sectional view of an embodiment of the present invention. , FIG. 7 is a cross-sectional view of another embodiment same as above, FIG. 8 is a cross-sectional view of still another embodiment same as above, and FIG. 9 is a cross-sectional view of still another embodiment. 2 is an inner cutter, 4 is a bent strip, 5 is a corresponding portion, 6 is a slit-shaped cutting hole, 9 is a plan view, and 12 is a side wall.

Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Scope of Claims] 1. A flat outer cutter that can be bent into a semi-cylindrical shape is provided with a concave or convex bending line parallel to the reciprocating sliding direction of the inner cutter, and the inner cutter is provided with a concave line corresponding to the bending line. The outer cutter is provided with a chipped or convex corresponding portion, and the outer cutter is provided with a group of slit-like cutting holes extending from the concave or convex bending line to the plane part that is the bending line of the outer cutter, and the inner cutter is connected to the inner cutter. In the structure of a reciprocating electric shaver blade that is configured to be reciprocated at the central portion in the longitudinal direction along the reciprocating sliding direction, the distance from the side wall of the bent portion to the corresponding portion opposing this is determined by the central portion of the inner blade. The structure of a reciprocating electric razor blade is characterized in that the inner blade becomes larger toward both ends in the reciprocating sliding direction. 2 The bent strip is formed in a concave shape, and the corresponding part of the inner cutter is formed in a concave notch shape, and the groove width of the concave notch shape in the corresponding part is made larger toward both ends in the reciprocating sliding direction of the inner cutter than in the center of the inner cutter. A structure of a reciprocating electric shaver blade according to claim 1, characterized in that: 3. The bent strip is formed in a convex shape, and the corresponding part of the inner cutter is formed in a convex shape. A structure of a reciprocating electric shaver blade according to claim 1, characterized in that: 4. The reciprocating electric shaver according to claim 1, wherein the radius of curvature of the concave or convex corner portion of the corresponding portion is increased toward both ends in the reciprocating sliding direction of the inner cutter. blade structure.