JP3211011B2 - Rotary electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary electric shaver having a cylindrical rotary inner blade, and more particularly to a method of shaving long hairs and curly hairs.

[0002]

2. Description of the Related Art For example, an electric razor having a reciprocating inner blade and a rotary inner blade is used to shave the arch-shaped or dome-shaped outer blade itself by leaving unshaved long hair or curly hair. The provision of a convex rib or a long hole for ease of use is known, for example, from Japanese Utility Model Application Laid-Open No. 58-14367.

[0003]

However, the above-mentioned arch-shaped or dome-shaped outer blade is provided with an original hair introduction hole for cutting short hairs at the center where it is most likely to come into contact with the skin, and causes long or curly hairs. The convex ribs and the long holes are biased at the outer end of the bristle introduction hole region. The location where such a convex rib or a long hole is provided is a place where it is difficult to come into contact with the skin of the outer blade, and furthermore, since the outer blade is provided in a limited effective area, the opening area of the long hole is restricted and narrow. Therefore, the contact area with the skin is small. For this reason, at present, the function of raising long hairs or curly hairs is not performed satisfactorily, and it takes too long to catch and cut long hairs or curly hairs. Therefore, in the rotary electric shaver, a similar problem still occurs if only the above-described convex ribs or long holes for raising long or curly hair are provided on the arch-shaped outer blade itself.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a hair shaving means of a rotary electric razor in which a cylindrical rotary inner blade is slidably rotated about an axis on an inner surface of an outer blade stretched in an arch shape to perform shaving. Before cutting the beard with the rotary inner blade and outer blade, the long hair and the curly bristles are surely added by adding the long hair / curly bristles introduction plate and the rotating body for raising the hair that effectively exhibit the raising action of the long hairs and the curly hairs. Wake it up to make it easier to shave.

[0005]

The rotary electric shaver according to the present invention is disposed in parallel with the rotary inner blade 2 adjacent to the upper side in the rotational direction of the rotary inner blade 2 as shown in FIG. A rotating body 3 for raising the brush, which rotates in a direction opposite to the rotary inner blade 2 around the shaft 16 in conjunction therewith;
0 and a long hair / curly hair introducing plate 21 having a long hair / curly hair introducing hole 27 which is arranged in parallel with the inner surface and is stretched in an arch shape so that the rotating body 3 for raising hair is slidably in contact with the inner surface.
A raised hair introduction hole 26 is provided at a position adjacent to the long hair / curly hair introduction plate 21 of the outer cutter 20.

[0006]

In use, as the razor is moved along the skin by moving the long hair / curly hair introducing plate 21 ahead, the long hair and the curly hair are forced by the cooperative action of the introducing plate 21 and the raising body 3. Can be reliably and reliably awakened. Subsequently, the raised long hairs and curly hairs are introduced into the raised hair introduction holes 26 on the outer blade 20 side and cut.

[0007]

1 to 6 show one embodiment of a rotary electric shaver according to the present invention. In FIGS. 1 and 3, a cylindrical rotary inner blade 2 and a similarly cylindrical rotating body 3 are arranged in parallel on the upper part of a main body case 1 so as to be adjacent to each other. The peripheral surface of the rotary inner blade 2 has a plurality of spiral cutting blades 4. A plurality of spiral raised wings 5 are provided on the peripheral surface of the raised rotator 3. The raised wings 5 are for raising long or curly hairs with the rotation of the raised rotator 3 and are not actively cut, and may have a rounded cross section.

An inner blade support frame 7 on which a motor 6 is mounted is incorporated in the main body case 1, and side frames 7 a and 7 b of the inner blade support frame 7 are attached to the main body case 1.
And supports the rotary inner blade 2 and the raising brush 3 between the protruding ends of the side frames 7a and 7b so as to be rotatable in opposite directions to each other. On the inner cutter support frame 7, a drive transmitting means 9 for transmitting the rotary inner cutter 2 and the raising rotating body 3 to rotate in opposite directions by driving the motor 6 is mounted. The drive transmission means 9 includes an output gear 10 on a shaft of the motor 6 and a face gear 11 meshing with the output gear 10.
A gear 13 at the end of the shaft 12 of the face gear 11, a gear 15 disposed on the shaft 14 of the rotary inner cutter 2, and a gear 17 disposed on the shaft 16 of the raising rotating body 3. Column 19

An outer blade 20 curved in an arch shape so as to wrap the upper peripheral surface of the rotary inner cutter 2, and a long and curly hair introducing plate 21 curved in an arch shape so as to wrap the upper peripheral surface of the napping rotating body 3, It is stretched with an outer blade holder 22 composed of a common inner holder 22a and outer holder 22b, and is detachably mounted on the upper part of the main body case 1. A number of small polygonal or circular bristle introduction holes 25 are provided in a sliding contact area of the outer cutter 20 with the rotary inner cutter 2, and long hairs that are larger than the bristle introduction holes 25 are erected at the sliding contact start portion. A plurality of raised hair introduction holes 26 for facilitating the introduction of fuzzy hair are provided side by side in the axial direction of the rotary inner blade (the left-right direction).

A long hair / curly hair introduction hole 27 is provided on the entire long hair / curly hair introduction plate 21 or at least in the left and right half regions on the sliding contact start side. The hole shape and arrangement pattern of the long hair / curly hair introduction holes 27 and the raised hair introduction holes 26 can be arbitrarily changed. As shown in FIGS. 1 and 2, one end 20 a of the outer blade 20 on the upper side in the rotating direction of the inner blade is fixed to a caulking pin 23 a integrally projecting from a fixed rod 23 provided between left and right walls of a plastic inner holder 22 a. The other end 2 on the lower side in the rotation direction of the inner blade of the outer blade 20 is fixed by caulking and welding.
Reference numeral 0b is attached to the inner holder 22a by being pulled by the spring member 24.

One end 21a of the long hair / curly hair introducing plate 21 on the upper side in the rotation direction of the raising body is continuous with the one end 20a of the outer blade 20 on the upper side in the rotation direction of the inner blade. Is fixed by caulking and welding to the fixing rod 23 as described above, and the other end 21b of the long hair / curly hair introduction plate 21 on the lower side in the rotation direction of the raising body is rotated.
Is attached to the inner holder 22a by being pulled by the spring member 24.

When the one end 20a on the upper side in the rotation direction of the inner cutter of the outer cutter 20 is fixed and the other end 20b on the lower side in the rotation direction of the inner cutter is pulled by the spring member 24, the outer cutter 20 rotates. Receiving the sliding contact force with the rotating inner blade 2, it is pulled toward the lower side of the rotating direction P of the rotary inner blade, and the rotation direction P
In the lower side, the tendency of the outer blade 20 to tend to be loosened is well suppressed, the adhesion of the outer blade 20 to the rotary inner blade 2 is constantly improved, and the bristle cutting action is exerted well. Similarly, the long and curly bristle introducing plate 21 is pulled toward the lower side of the rotation direction P of the rotating brush raising body 3 by receiving the sliding contact force with the rotating rotating body 3 for raising brush, and the lower side of the rotating direction P At the side, the tendency of the long hair / curly hair introduction plate 21 to tend to be loosened is suppressed well, and the adhesion of the introduction plate 21 to the raising rotating body 3 is constantly enhanced, so that the hair raising effect is favorably exhibited.

In FIGS. 1 and 3, the rotary inner blade support frame 7 has an elastically deformable arm portion 29, and both ends 29a of the arm portion 29 are supported and fixed to the inner wall of the main body case 1. As a result, while the outer blade 20 and the long hair / curly hair introducing plate 21 receive skin pressure, the rotary inner blade 2 and the rotating body 3 for raising the hair together with the support frame 7 can freely float in the vertical direction with respect to the main body case 1.
The degree of sliding contact with the rotary inner blade 2 and the degree of sliding contact between the long and curly bristle introducing plate 21 and the rotating body 3 for raising the brush are always kept constant.

At the time of shaving, the razor is moved along the skin S in the direction of the arrow X with the long hair / curly hair introducing plate 21 preceding the long hair as shown in FIGS. The fluffy hairs H are introduced into the long hairs and fluffy hair introduction holes 27, and the introduced hairs are rotated by the rotating napping rotator 3.
Long hairs and curly hairs H that have been forcibly raised and subsequently risen up are cut into the raised hair introduction holes 26 of the outer cutter 20. At this time, by providing the raised brush introduction hole 26 at the portion where the outer cutter 20 slides into contact with the rotary inner cutter 2, it is easier to introduce raised brush, and the outer cutter 20 receives the sliding contact force of the rotary inner cutter 2. Even if it is displaced to the lower side in the rotation direction of the rotary inner blade, the direction of this displacement coincides with the direction in which the nap introduction hole 26 enters the sliding contact area with the rotary inner blade 2, so that the long hairs introduced into this are left unshaved. Disconnected without being cut.

Instead of forming the outer blade 20 and the long and curly hair introducing plate 21 integrally and continuously, they are formed separately from each other,
These can be mounted side by side on the outer blade holder 22. As a means for transmitting the drive of the rotation of the motor 6 to the rotary inner blade 2 and the napping rotating body 3, a timing belt transmission system may be adopted instead of the gear transmission as in the above embodiment. It is optional to make the rotary inner blade 2 and the rotating body for raising 3 have the same diameter or different diameters. Further, the rotational speed of the rotary inner blade 2 and the rotating body 3 for raising the brush can be made different per minute. For example, the rotary inner blade 2 is set to 2200 to 2500
(R.P.M), the brushed rotator 3 is 2700-3500
(RPM). Conversely, it is also conceivable to set the number of revolutions per minute of the raising brush rotating body 3 to be lower than the number of revolutions per minute of the rotary inner blade 2.

FIG. 7 shows another embodiment. In this embodiment, the height of the outer cutter 20 is set higher than the height of the long and curly hair introducing plate 21. According to this, the whole body case 1 is moved to the lower end thereof so that the long hair / curly hair introducing plate 21 does not interfere with the normal shaving and the long hair / curly hair introducing plate 21 easily contacts the skin during long hair or curly shaving. The portion may be slightly laid down and slightly shaved so that the portion is inclined in the direction opposite to the direction of the long hair / curly hair introduction plate 21 side.

FIG. 8 shows still another embodiment. In this embodiment, a resin mold 30 is integrally formed on the surface of a long hair / curly hair introducing plate 21 formed continuously and integrally with the outer cutter 20. In this case, the long and curly bristle introducing plate 21 is held in a state of being bent in an arch shape so as to follow the upper part of the peripheral surface of the rotating body 3 for raising hair, and then resin is molded on the surface thereof. The raised hair introduction hole 26 on the outer blade 20 side and the long hair / curly hair introduction hole 27 are formed continuously. The end portion 20b of the outer cutter 20 is attached to the outer cutter holder 22 by being pulled by a spring member 24, and the end portion 21b of the long and curly hair introducing plate 21 is fixed. FIG. 9 shows yet another embodiment, in which long hair
The curly bristle introducing plate 21 is made of a rigid thin metal plate which is plastically processed in an arch shape so as to extend along the upper part of the peripheral surface of the raising body 3. It is attached. Also in this case, the brushed introduction hole 26
And the long hair / curly hair introduction hole 27 are formed continuously.

[0018]

According to the present invention, a hair raising means comprising the raising body 3 and the long hair / curly hair introducing plate 21 is constituted.
Since this is provided side by side with the original rotary inner cutter 2 and outer cutter 20, the long hair / curly hair introduction plate 21 easily contacts the skin with a large contact area, so that long hairs and curly hairs are surely captured before cutting. It can be raised and then introduced into the outer blade 20 to be surely cut.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a razor head.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is a perspective view of a razor head shown in a state where an outer blade and a long hair / curly hair introducing plate are removed.

FIG. 4 is an exploded perspective view of the outer blade.

FIG. 5 is a plan view of an outer blade and a long hair / curly hair introduction plate.

FIG. 6 is an operation diagram showing a process of raising and cutting long hair.

FIG. 7 is a vertical sectional side view of a razor head section showing another embodiment.

FIG. 8 is a perspective view showing an outer blade and a long hair / curly hair introduction plate of another embodiment in a partially broken state.

FIG. 9 is a perspective view showing an outer blade and a long hair / curly hair introduction plate of still another embodiment in a partially broken state.

[Explanation of symbols]

 Reference Signs List 2 Rotary inner blade 3 Rotating body for raising 14.16 shaft 20 Outer blade 21 Long hair / curly hair introduction plate 25 Hair introduction hole 26 Brush introduction hole 27 Long hair / curly hair introduction hole

Claims (1)

(57) [Claims] 1. A cylindrical rotary inner blade 2 with respect to an inner surface of an outer blade 20 having an arch shape having a plurality of hair introduction holes 25,
In a rotary electric shaver that performs shave by sliding contact rotation about a shaft 14, a rotary electric shaver is disposed adjacent to and parallel to a rotationally upper side of a rotary inner blade 2, and a shaft 16 is interlocked with the rotation of the rotary inner blade 2. A cylindrical brushing rotating body 3 that rotates around in the opposite direction to the rotary inner blade 2, and is arranged adjacent to and parallel to the outer blade 20, and is arched so that the brushing rotating body 3 slides on the inner surface. A long hair / curly hair introduction plate 21 having a provided long hair / curly hair introduction hole 27, and a portion adjacent to the long hair / curly hair introduction plate 21 having the outer blade 20;
A rotary electric shaver having a raised introduction hole 26.