JPS587279A - Inner blade of electric 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 an inner cutter for an electric shaver, and an object thereof is to provide an inner cutter for an electric shaver that is lightweight and has a small load.

The inner blade of conventional electric shavers is attached to an inner blade base made of synthetic resin material via a push-up spring fixed to the inner blade base, but the inner blade is heavy and the load is high. Electric shavers that are expensive and use dry batteries or rechargeable batteries have the disadvantage that the battery capacity runs out in a short period of time.

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 and 2, the inner cutter 1 has three blades 3 distributed at an angle of 120 degrees that rotate and slide on the inner surface of the outer cutter 2.
and a drive shaft (not shown) that is rotationally driven by a motor (not shown).
A fitting portion 4 (not shown) is integrally connected to an inner cutter frame 5 made of a substantially disc-shaped metal plate.

The fitting s4 is bored in the center of the inner cutter frame 5 and is bent upward to increase the contact area with the drive shaft. A bending part 7 is provided on the outer periphery of the inner blade frame 5, and the bending part 7 is bent in the opposite direction to the blade 3 to form a 7-landing part 6. A notch 8 into which the outer peripheral end is inserted is formed outward from the bent portion 7. Inner blade 1
are formed by bending the blades 3 and 7 landing portions 6 in opposite directions.

FIG. 3 is a cross-sectional view of the combination of the inner cutter 1 and the outer cutter 2. The outer cutter 2, which has many cutter holes 9, is held on an outer cutter base 10, and the inner circumference of the outer cutter 2 is When the blade 3 reaches the vicinity of the body 11, a three-dimensional blade hole 1 is formed in the bent portion 12 of the outer cutter 2.
Long beards and curly hair can be introduced into 8 and cut with the blade 3, and the 7 rande part 6 is smaller than the diameter of the inner circumferential body 14 of the outer cutter base 10, making it easier to connect the outer cutter 2 and the inner cutter 1. Can be combined.

As described above, the inner cutter of the electric shaver according to the present invention has a substantially disc-shaped structure in which the blade that rotates and slides on the inner surface of the outer cutter and the fitting portion that fits onto the drive shaft that is rotationally driven by the motor are connected together. The inner cutter frame is formed of a metal plate, and the outer circumference of the inner cutter frame is bent in the opposite direction to the blade and has a smaller diameter than the outer circumferential end of the blade. Since the weight is light, the load is low and the battery capacity lasts for a long time.Furthermore, since the outer periphery of the inner cutter frame is bent, the inner cutter is strong and does not deform, so it fits well with the outer cutter. It has the effect of providing a good cutting edge, and since it is bent in the opposite direction to the blade, it has the effect of preventing hair chips from accumulating on the inner blade frame.

[Brief explanation of the drawing]

The drawings show one embodiment of the inner cutter of the electric shaver of the present invention. Fig. 1 is a developed view of the inner cutter, Fig. 2 is a sectional view of the inner cutter, and Fig. 3 is a diagram showing the inner cutter as an outer cutter. It is a combined sectional view. 30 blades, 5...inner blade frame. Patent applicant Matsushita Electric Works Co., Ltd. Representative patent attorney Toshimaru Takemoto (and 2 others)

Claims (1)

[Claims] A blade that rotates and slides on the inner surface of the outer cutter and a fitting portion that fits onto a drive shaft rotationally driven by a motor are integrally connected to form an inner cutter frame made of a substantially disc-shaped metal plate, and An inner blade for an electric shaver, characterized in that the outer periphery of the blade frame is bent in the opposite direction to the blade and to a smaller diameter than the outer periphery of the blade.