JPS58209374A - Inner blade of reciprocal type electric shaver - 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 an inner cutter for a reciprocating electric shaver, and an object of the present invention is to provide an inner cutter for a reciprocating electric shaver with good cutting ability.

As shown in Fig. 9, the inner blade (a) of a conventional reciprocating electric shaver has an inner blade (b) with a generally arcuate cross section, and three parts at both ends and the center are made of synthetic resin. Base (／→
Therefore, there was a problem that the inner cutter blade (→) had no elasticity in the driving direction of the inner cutter (A), making it impossible to obtain a good cutting quality.

The present invention has been made in view of the above problems, and will be described below with reference to the drawings showing embodiments of the present invention. 1st
In the figures, the outer cutter 1 includes an outer cutter plate 3 in which a large number of hair introduction holes 2 are formed in a thin metal plate, and an outer cutter to which the outer cutter plate 3 is curved to have a substantially arcuate cross section. It is composed of a base 4. The inner cutter 5 has a plurality of inner cutter blades 6 having a substantially arcuate cross section and arranged in parallel at a predetermined pitch. It is formed by connecting both ends of the rib 8 with a connecting piece 9 that is a part of the inner cutter base 7. The inner blade 6 is divided into two parts via a gap IO formed in the center, each of which is elastically supported independently by a rib 8, and is in sliding contact with the inner surface of the outer cutter plate 3. The driver 11 includes an inner cutter mount 12 to which the inner cutter 5 is attached, a pair of elastic legs 13 formed at both ends of the inner cutter mount 12, and a pair of elastic legs 13 formed at the ends of the elastic legs 13. It is composed of a fixed piece 14, a bearing 17 into which an eccentric cam 16 of a motor 15 is fitted, and an elastic arm 18 provided with the bearing 17, and is integrally formed of a synthetic resin material. The direction in which the elastic leg 13 deforms and the direction in which the inner cutter blades 6 are arranged in parallel are the same, and the direction in which the elastic arm I8 deforms and the direction in which the elastic leg 13 deforms are perpendicular to each other. The rotational motion is transmitted to the inner cutter 5 as a reciprocating motion via the driver 11. The main body case 19 is made of a synthetic resin material, and the drive element 11 and the motor 15 are housed in the main body case 19.

The cutting state of the beard will be explained with reference to FIGS. 4 and 5. The inner blade 6, which has bitten into the υ whisker a due to the collision with the whisker a, is elastically deformed as the inner cutter 5 moves, and the inner cutter blade 6 receives energy due to the elastic deformation of the inner cutter blade 6 and movement due to the reciprocating motion of the inner cutter 5. It cuts with energy. Further, the inner cutter blade 6, which has bitten into the beard a due to the collision with the beard a, pulls out the beard a as the inner cutter 5 moves and cuts the beard a, and then cuts the beard a even shorter.

FIGS. 6 to 8 show other embodiments of the present invention, in which the outer cutter plate 21 is made of a thin metal plate, and has a large number of hair introduction holes 22 and a concave bent strip 23. is formed. A long whisker introduction hole 24 is formed in the bent strip portion 23 . The inner blade 25 has a substantially arc-shaped cross section and is divided into two by a gap 26 corresponding to the bent strip 23.
7, and a Y-shaped inner cutter base 28 provided with a pair of elastic pieces 29 that elastically support the intermediate position of each inner cutter blade 27. According to this embodiment, the inner cutter blade 27 is attached to the inner cutter base 2 in consideration of the balance of the inner cutter blade 27.
8, the entire inner blade 27 vibrates with approximately the same amplitude as shown in FIG. The inner blade 27 is attached to the concave bent strip 23.
is guided and can reciprocate smoothly.

As described above, the inner cutter of the reciprocating electric shaver according to the present invention has an inner cutter blade having a substantially arcuate cross section that slides in contact with an outer cutter having a substantially arcuate cross section and which is provided with hair introduction holes, and is divided into two at substantially the center. The feature is that each inner blade is elastically supported on the inner blade frame, and the beard can be cut vigorously using the energy generated by the elastic deformation of the inner blade and the kinetic energy generated by the reciprocating motion of the inner blade. It has a good cutting ability, and the inner blade pulls out the hair with the inner blade and cuts it, and then cuts the hair with the inner blade, which has the effect of being able to cut it shorter than ever.In addition, the hair is cut with the inner blade that moves back and forth. Since the hair is pulled and loosened by the hair, it has the effect of allowing you to shave with almost no stickiness.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway sectional view of a reciprocating electric shaver incorporating the inner cutter of the reciprocating electric shaver of the present invention, Fig. 2 is an external perspective view of the same inner cutter 1-, and Fig. 3 is a Figure 4 is a side view of the combination of the outer blade plate and inner blade, Figure 4 is a cross-sectional view of the inner blade showing the deformed state of the inner blade, and Figure 5 is a side view of the outer blade plate and the inner blade, showing the state of cutting whiskers. 6 is an external perspective view of the inner cutter corresponding to FIG. 2 in another embodiment, and FIG. 7 is a side view of the combined outer cutter plate and inner cutter corresponding to FIG. 3 of the same [-]. 8 is a plan view of the inner cutter blade corresponding to FIG. 4 of the same, and FIG. 9 is an external perspective view of the inner cutter corresponding to FIG. 2 in the conventional example. 1. Outer blade, 2. Beard introduction hole, 6. Inner blade,
7. Inner blade base. Patent applicant Matsushita Electric Works Co., Ltd. Representative patent attorney Toshimaru Takemoto (and 2 others)

Claims (1)

[Scope of Claims] 1. An inner blade having a substantially arcuate cross section that slides into contact with an outer cutter having a substantially arcuate cross section and provided with whisker introduction holes is divided into two approximately at the center, and each inner blade is attached to an inner blade base. An inner blade of a reciprocating electric shaver characterized by being elastically supported on a base. 2. The inner cutter of a reciprocating electric shaver according to claim 1, wherein an intermediate position of the inner cutter blade is supported on an inner cutter base.