JPS5854984A - Reciprocal electic razor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reciprocating electric shaver, and an object thereof is to provide a reciprocating electric shaver that can reliably remove beard debris accumulated between the inner blades by washing with water. There is a particular thing.

In a reciprocating electric shaver equipped with an inner cutter in which a plurality of inner cutter blades are fixed to an inner cutter base and the inner cutter blades are in sliding contact with an outer cutter, the interval between the inner cutter blades is Because the blade is narrow, when shaving with the outer and inner blades, most of the shaved beard and skin fat accumulates in the inner blade base or in the beard debris storage area, but fat is highly resistant to adhesion. It accumulates and hardens on the tip edge and sides of the inner blade, and if you apply soap to your skin while shaving, the soap also accumulates between the inner blades and is not removed sufficiently even after washing with water, causing the cutting edge to deteriorate. It has the disadvantage that it adheres to the inner blade base, impairing its cutting quality, and furthermore, when various bacteria grow in the beard debris and skin fat accumulated on the inner blade base, it gives off a bad odor and makes you feel uncomfortable when shaving.

The present invention has been made in view of the above drawbacks, and will be described below with reference to the drawings showing embodiments of the present invention. 1 to 4, an electric shaver main body 1 includes a main body case 2 made of a synthetic resin molded material, a drive section (not shown) housed in the main body case 2, and a reciprocating body driven by the drive section. It is composed of a drive ring 3 to be driven, an inner cutter 4 attached to the drive ring 3, and an outer cutter 5 whose inner surface is in sliding contact with the inner cutter 4. The inner blade 6 has a fan-shaped overall shape with a radius of approximately 6.5 mm at the tip that acts as a cutting blade.
The inner blade 6 is integrally provided with wide connecting parts 7 at both ends and the center, and the parts other than the connecting wide parts 7 are thinned to form concave cutouts 8 and become thin. There is. The decrease in strength caused by thinning is prevented by increasing the thickness of the inner blade 6. A plurality of inner blades 6 are molded simultaneously in a mold with a predetermined pinch, and both ends and the center of each inner blade 6 are connected by a rib 9.
The three ribs 9 are firmly connected by six connecting ribs 11 including both ends. The inner cutter base 10 is formed of ribs 9 and connecting ribs 11. The ribs 9 clamp the connecting wide portions 7 of the inner blades 6, leaving only a portion, and fix each of the inner blades 6. Inner blade blade 6 has a concave notch 8 between the inner blade 6 and the connecting rib 11.
A communicating portion 12 is formed by this. The connecting rib 11 is arranged between the inner cutter blades 6 and the inner cutter blades 6. The part of the wide connecting part 7 that is not clamped has water 11/
The blades 13 for stirring are arranged in the communication part 12 and powerfully stir the water around the ribs 9 where whisker debris tends to accumulate. Through experiments, we were able to obtain a graph as shown in Figure 6 regarding the dimensional relationship between the inner cutter blade 6 and the inner cutter base 10 in order to reliably remove the beard debris accumulated between the inner cutter blades 6 by washing with water. . This graph is a curve showing the relationship between the pressure P required to remove deposits such as beard debris and skin fat from the inner blade 6 and the width B from the cutting edge of the inner blade 6 to the communication portion 12. , the pitch H of the inner blade 6 is expressed as a parameter, and the distance W between the ribs 9 that fix the inner blade 6 is constant. From these experimental conditions and results, the pressure P required to remove whiskers
The relationship between B and each factor is expressed as follows. In order to reliably remove the beard debris accumulated between the inner blades 6 by washing with water and to create an inner blade with high strength, B should be between 0.8 and 0.8. mm, W from 3 to 6.5
It is desirable to set IJ and H to 1 to 1.6 mm, and it is especially good to set B to 0.8 mm and H to 1.6 mm, but in this embodiment, considering the strength, B is set to 0. .5 mm, H 1.
46mm, plate thickness 0.14mm. The inner cutter 4 is connected to the drive ring 3 via a joint 14. The outer cutter 5 is composed of an outer cutter plate 16 in which a large number of cutter holes 15 are formed, and an outer cutter base 17 that holds the outer cutter plate 16 in a U-shaped curved state. The sink storage chamber 18 is composed of a main body case 2, an outer cutter plate 16, and an outer cutter base 17. 19 is a power switch.

Next, the operating state will be explained. When the power switch 19 is operated, the inner blade 4 is driven back and forth, and the hair that has entered through the blade hole 15 is cut off. On the other hand, the cut beard and skin fat fall into the beard storage chamber 18 or adhere to the inner cutter blade 6. In this case, the three dimensions of the inner blade 6 are reduced, whereas the conventional one is about 1.2 mm, so the amount of adhesion is reduced. When water is dropped onto the outer blade 5 and the inner blade 4 for washing and is passed through the beard storage chamber 18, the beard debris that has fallen into the beard storage chamber 18 is washed away, and at the same time, the inner blade 4
When the inner cutter 4 is reciprocated, water flows through the communication portion 12 of the inner cutter 4, and the inner cutter blade 6 and the inner cutter base are This is to remove whiskers attached to the stand 10, and if a blade 13 is provided in the communication part 12 to stir the water by 1V, the relative speed of the water to the surface of the inner cutter blade 6 and the surface of the inner cutter base 10 is 5 shows another embodiment of the present invention, in which the inner cutter base 1
A part of the wide part 7 of the inner cutter blade 6 fixed at 0 is used as a wing 13, and an opening 20 is formed in the wing 13, so that the lip 9 of the inner cutter base 10 can be cleaned with water. This is to improve and ensure the distribution of

As described above, the reciprocating electric shaver according to the present invention is a reciprocating electric shaver comprising a plurality of inner blades fixed to an inner cutter base or an inner cutter in sliding contact with an outer cutter. A recessed notch is formed in at least one of the base and the inner blade to form a communication portion between the inner cutter base and the inner blade, and a blade is disposed within the communication portion of the inner cutter. This feature makes it possible to reliably remove sink debris and skin fat adhering to the inner blade and inner blade base by washing with water, leaving the outer and inner blades in good cutting condition. This has the effect of keeping the shave clean and providing a comfortable shave without any bad odor.

[Brief explanation of the drawing]

The drawings show an embodiment of the reciprocating electric shaver of the present invention. Fig. 1 is a front view of the main parts of the reciprocating electric shaver with the outer cutter and inner cutter disassembled, and Fig. 3 shows the outer cutter and the inner cutter. FIG. 4 is a sectional view of the inner cutter, FIG. 5 is a sectional view of the inner cutter of another embodiment corresponding to FIG. 4, and FIG. It is a graph showing the relationship between the force required to remove deposits on the inner blade and the width from the cutting edge of the inner blade to the communication portion. 11・O blade, 12・・Communication part. Patent applicant Matsushita Electric Works Co., Ltd. Representative patent attorney Toshimaru Takemoto (and 2 others)

Claims (5)

[Claims] (1) In a reciprocating electric shaver comprising a plurality of inner cutter blades fixed to an inner cutter base or inner cutters in sliding contact with an outer cutter, at least one of the inner cutter base and the inner cutter blades A reciprocating electric shaver characterized in that a recessed cutout is formed to form a communication section between the inner cutter base and the inner cutter blade, and a blade is disposed within the communication section of the inner cutter. (2) A reciprocating electric shaver according to claim 1, wherein the inner blade has a recessed notch and a blade. (3) The reciprocating electric shaver according to claim 2, wherein a part of the wide part of the inner cutter blade fixed to the inner cutter base is a blade. (4) Claim 3 in which the blade is provided with an aperture
Reciprocating electric shaver, as described in section. (5) The inner blade is fan-shaped, and the width between the cutting edge and the communication hole is 0.8 to 0.8 mm, and the gap between the inner blades is 1 to 1.6 mm IJ. The reciprocating electric shaver according to claim 1, wherein the distance between the ribs for fixing the blade is set to 3 to 6 mm.