JPS6041952B2 - reciprocating electric razor - Google Patents

Description

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

In the case of a reciprocating electric shaver equipped with an inner cutter that is composed of a plurality of inner cutter blades that are in sliding contact with an outer cutter and an inner cutter base on which the inner cutter blades are arranged side by side, the inner cutter blade and the inner cutter blade are Because the distance between the outer and inner blades 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 the beard debris reservoir, but the fat is not adhesive. Because it is strong, it adheres to the tip edge and sides of the inner blade and hardens.Also, when you shave with soap on your skin, the soap also accumulates between the inner blades and does not wash properly even after washing with water. It has the disadvantage that it cannot be removed and adheres to the cutting edge of the inner blade, resulting in poor cutting quality.Furthermore, when the beard debris and skin fat accumulated on the inner blade base breed bacteria, a bad odor is generated.
The drawback was that it caused discomfort 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.

In FIGS. 1 to 4, an electric shaver main body 1 includes a drive section (not shown) formed of a synthetic resin molded material and housed in a main body case 2, and a drive rod 3 that is reciprocated by the drive section. It consists of an inner blade attached to the drive rod 3. The inner cutter 4 is an inner cutter blade 6 that slides into contact with the inner surface of the outer cutter 5.
and an inner cutter base 10 on which the inner cutter blades 6 are arranged side by side. The inner blade 6 is formed into a fan shape with a radius of approximately 6.5 mm at the tip that acts as a cutting edge. The inner blade 6 has connecting wide parts 7 integrally protruding from both ends and the center, and the parts other than the connecting wide parts 7 are recessed, and there is a gap between the inner blade 6 and the connecting rib 11. A communicating portion 8 is formed.

Although the inner blade 6 is made thinner due to the communication portion 8, a decrease in strength caused by making the inner blade 6 thinner is prevented by increasing the thickness of the inner cutter blade 6. The inner blades 6 are simultaneously molded in double pieces at a predetermined pitch in a molding die, and both ends and the center of each inner blade 6 are connected by a rib 9, and the three ribs 9 are connected at both ends. They are firmly connected by six connecting ribs 11. The inner blade base 10 has ribs 9
and a connecting rib 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. The connecting rib 11 is arranged between the inner cutter blades 6 and the inner cutter blades 6. The part of the wide connection part 7 that is not clamped serves as a blade 13 for stirring the water, which is disposed in the communication part 8, and powerfully stirs the water around the rib 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 flade 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 curve 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 part 8. , the pitch H of the inner blade 6 is expressed as a parameter, and the distance between the ribs 9 that fix the inner blade 6. The distance W is kept constant. Based on these experimental conditions and results, the relationship between the pressure P required to remove sink debris and each factor is expressed as follows.The relationship between the pressure P required to remove sink debris and each factor is expressed as follows. To make the inner blade 4 high, it is desirable to set B to 0.3 to 0.8 mm, W to 3 to 6.5 mm, and 18H to 1 to 1.6 mm, especially B to 0.3 mm. It is better to set the mill 8 H to 1.6 mm, but in this example, considering the strength, B is 0.5 mm and H is 1.4 mm.
6mm, and the board thickness is 0.14mm.

The inner cutter 4 is connected to the drive rod 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 hair storage chamber 18 is composed of a main body case 2, an outer cutter plate 16, and an outer cutter base 17. 1
9 is a power switch.

In the embodiment, the communication portion 8 is formed by recessing the inner cutter blade, but the inner cutter base 10 may also be recessed. Alternatively, the communication portion 8 may be formed by recessing both the inner cutter blade and the inner cutter base 10. Next, the operating state will be explained.

When the power switch 19 is operated, the inner blade 4 is reciprocated and the hair that has entered through the blade hole 15 is cut off. On the other hand, the cut sink marks and skin fat fall into the hair storage chamber 18 or adhere to the inner cutter blade 6. In this case, the B dimension of the inner blade 6 is about 1.2 mm in the conventional one, whereas
Since it is reduced in size, the amount of adhesion is reduced. When water is dropped on the outer cutter 5 and inner cutter 4 for washing and 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, when the inner cutter 4 is reciprocated, the inner cutter 4 communication part 8
As the water flows through the inner cutter blade 6 and the inner cutter base 10, the hairs attached to the inner cutter blade 6 and the inner cutter base 10 are removed due to the relative velocity and vibration between the surface of the water and the inner cutter blade 6 and the inner cutter base 10 surface. When the blades 13 for agitating water are provided in the communication part 8, the relative speed and vibration between the surface of the inner cutter blade 6 and the surface of the inner cutter base 10 and the water become stronger, so that the attached whiskers and skin fat become stronger. This will ensure that they are removed. FIG. 5 shows another embodiment of the present invention, in which a part of the wide part 7 of the inner cutter blade 6 fixed to the inner cutter base 10 is made into a blade 13, and the blade 13 has holes. This portion 12 is formed to improve the flow of water to the ribs 9 of the inner cutter base 10 and to ensure that the ribs 9 of the inner cutter base 10 can also be cleaned efficiently and reliably.

In this way, the reciprocating electric shaver according to the present invention
In a reciprocating electric shaver, the reciprocating electric shaver is equipped with an inner cutter composed of a plurality of inner cutter blades that are in sliding contact with an outer cutter, and an inner cutter base on which the inner cutter blades are arranged side by side. At least one of the inner cutter blades is recessed to form a connecting portion between the inner cutter base and the inner cutter blade, and a blade is disposed within the communication portion of the inner cutter. By washing with water, you can reliably remove sink debris and skin 1h゜ fat that adheres to the inner blade and inner cutter base.
This has the effect of keeping the outer and inner blades in good cutting condition and allowing a comfortable shave without any bad odor.

[Brief explanation of drawings]

The drawings show an embodiment of the reciprocating electric shaver of the present invention, and Fig. 1 is an exploded perspective view of the reciprocating electric shaver with the outer cutter and inner cutter disassembled, and Fig. 2 shows the essentials of the reciprocating electric shaver. 3 is a perspective view of the appearance of the outer cutter and inner cutter, FIG. 4 is a sectional view of the inner cutter, and FIG. 5 is a cross-section of the inner cutter of another embodiment corresponding to FIG. 4. FIG. 6 is a graph showing the relationship between the width of the inner blade from the cutting edge to the communication portion and the amount necessary for removing deposits such as beard debris and skin fat from the inner blade. 5...Outer blade, 6...Inner blade, 8
...Communication section, 10...Inner blade base, 13
...feather.

Claims (1)

[Scope of Claims] 1. In a reciprocating electric shaver comprising an inner cutter constituted by a plurality of inner cutter blades in sliding contact with an outer cutter and an inner cutter base on which the inner cutter blades are arranged in parallel, the inner cutter A communication portion is formed between the inner cutter base and the inner cutter blade by recessing at least one of the base and the inner cutter blade, and a blade is disposed within the communication portion of the inner cutter. A reciprocating electric razor. 2. The 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, characterized in that a part of the wide portion of the inner cutter blades arranged in parallel on the inner cutter base is made into a blade. 4. The reciprocating electric shaver according to claim 3, characterized in that the blades have openings formed therein. 5. The inner blade is fan-shaped, and the width from the cutting edge to the communication part is 0.3 mm to 0.8 mm.
The gap between the inner cutter blades was set to 1 mm to 1.6 mm, and the distance between the ribs of the inner cutter base for fixing the inner cutter blades to the ribs of the inner cutter base was set to 3 mm to 6 mm. A reciprocating electric shaver according to claim 1, characterized in that: