JPS6029512B2 - rotary electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary electric shaver, and an object of the present invention is to provide a rotary electric shaver that has a good cutting quality and low vibration.

Conventionally, rotary electric shavers use a small motor to reduce the outer diameter, and the outer diameters of the inner cutter base and outer cutter are also made smaller, but the inertia of the inner cutter base is small and the outer cutter If a large number of whiskers are introduced into the whisker introduction hole and the inner cutter blade cuts them all at once, the rotation speed of the inner cutter body will drop significantly, causing uneven rotation, or in extreme cases, it may even stop. This has the disadvantage that it causes discomfort due to pulling, reduces the sharpness of the blade, and takes a long time to shave.

In addition, in the rotary electric shaver cutter proposed to solve the above-mentioned drawbacks, for example, as shown in Japanese Utility Model Publication No. 49-9513, hair shoulders accumulate in the groove in which the car bell is slidably interposed. There was a drawback that the heavy plow did not slide smoothly in the groove, causing vibrations when the car bell was misaligned and the balance was lost. 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, the inner cutter base 1 is formed by mixing a substance 2 with a high specific gravity made of metal powder such as iron or copper when the inner cutter base 1 is molded. At the center of the inner cutter base 1 is formed a hole 3 for coupling with a rotating shaft (not shown), and a plurality of inner cutter blade insertion holes 4 are formed radially. A leg portion 6 of an inner cutter blade 5 having a plate thickness of 0.2 mm or more and formed in a T-shape is inserted into the inner cutter blade insertion hole 4 from the upper surface of the inner cutter base 1. Inner blade 5
A locking hole 7 is formed in the leg portion 6 of the inner blade 5, and an inner blade push-up spring 8, one end of which is fixed to the lower surface of the inner blade base 1, is engaged with the locking hole 7 to raise the inner blade 5. It is attached to the inner cutter base 1 so that it can move independently, and the moment of inertia is 0.0.
5-0.0 foundation willow. It constitutes the inner blade body 9 of sec2.
The working blade part 1 of the inner blade 5 is in sliding contact with the inner surface of the outer blade 11. The outer cutter 11 is formed with a large number of whisker introduction holes 13 having cutting edges 12 around it, and an outer cutter body 15 is formed by fixing the outer periphery of the outer cutter 11 to an outer cutter frame 14 and integrating the outer cutter body 15. has been done. The thickness L of the inner blade 5 is the fourth
As shown in the figure, it is made thicker than the width L of the sink portion 16 of the outer cutter 11 to prevent the cutting edge portion 10 from falling into the sink portion 16. The inner cutter body 9 and the outer cutter body 15 constitute a head portion 17 of the rotary electric razor 1'. in this way,
A rotary electric shaver according to the present invention includes an outer cutter having a large number of hair introduction holes, an inner cutter blade that rotates and slides into contact with the inner surface of the outer cutter, and an inner cutter base that supports the inner cutter blade. The rotary electric shaver is characterized in that the inner cutter base is formed by mixing a synthetic resin material with a powder having a higher specific gravity than the synthetic resin material, so that the inertia of the inner cutter body is large. The cutting power of the beard is significantly improved, and even if a large number of beards are introduced into the beard introduction hole of the outer blade, even if the beard is cut at once by the inner blade blade, there is little variation in the rotational speed of the inner blade body, and beards can be shaved quickly. In addition, since the center of gravity of the inner cutter base is constant and the balance is not lost, there is no vibration caused by the inner cutter base, and a low-vibration rotary electric shaver can be obtained.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a cross-sectional view of the entire head of a rotary electric shaver, Fig. 2 is a perspective view showing the main parts of the inner cutter, and Fig. 3 is the inner cutter. FIG. 4 is a perspective view of the base and a sectional view showing the relationship between the inner cutter blade and the outer cutter. 1...Inner blade base, 2...Powder with high specific gravity, 5...Inner blade, 9...Inner blade body, 11...Outer blade, 13...Beard Introduction hole. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. A rotary electric shaver equipped with an outer cutter having a large number of hair introduction holes, an inner cutter blade that rotates and slides into contact with the inner surface of the outer cutter, and an inner cutter base that supports the inner cutter blade, which is made of synthetic resin. 1. A rotary electric shaver characterized in that an inner blade base is formed by mixing powder with a higher specific gravity than the synthetic resin material.