JPS6130612Y2 - - Google Patents

Description

[Detailed description of the invention] The invention relates to an electric razor blade,
The purpose of this is to prevent an increase in the sliding resistance of the inner cutter due to the adhesion of debris, fat, etc. between the sliding contact surfaces of the outer cutter and inner cutter blade, and to maintain good sharpness. Our goal is to provide electric razor blades that can.

With conventional electric razor blades, when shaving with the outer and inner blades, beard shavings, grease, etc. adhere to the sliding contact surface between the outer and inner blades, and after long-term use, In some cases, these particles stick to the sliding surface, increasing the sliding resistance of the inner blade and reducing the sharpness, so there is a disadvantage that the outer blade must be removed periodically to clean the outer and inner blades. Ta.

The present invention has been devised in view of the above-mentioned drawbacks, and will be described below with reference to FIGS. 1 to 3.

The inner blade 1 is formed in a semicircular shape, and a plurality of inner blades 1 are arranged in parallel with a gap S between them.
Both ends and a middle portion of the blade are connected to a connecting rib 2 to form an inner cutter 3. The inner cutter 3 is attached to a drive rod 4 that reciprocates in the direction in which the inner cutters 1 are arranged side by side with a stroke larger than the pitch P of the inner cutters 1. The inner cutter blade 1 is curved to have a semicircular cross section and is in sliding contact with the inner surface of an outer cutter 6 attached to an outer cutter base 5. A plurality of hair introduction holes 7 are formed in the outer cutter 6. A plurality of slits 9 are formed in the sliding surface 8 of the inner cutter blade 1 with the outer cutter 6, and the inner cutter blade 1 is separated into a plurality of pieces. The width B of slit 9 is 1/ of the thickness of hair and beard.
It is preferable to set it to 2 to 1/3 or less (for example, 0.05 mm or less) in order to avoid leaving hair that has entered the slit 9 unshaved. The slits 9 of each inner cutter blade 1 are offset from each other so as not to coincide with the reciprocating direction of the inner cutter 3 (A in the drawing). The drive rod 4 is, for example, an electrically driven motor (not shown).
It is reciprocated by.

In this way, the electric razor blade according to the present invention is
It is composed of an inner cutter in which a plurality of inner cutter blades are arranged in parallel, and an outer cutter in which the inner cutter blades make sliding contact in a reciprocating manner, and a plurality of slits are formed in the sliding contact surface of the inner cutter blade with the outer cutter. This electric razor blade is characterized in that the positions of the slits of adjacent inner blades are shifted from each other with respect to the direction of reciprocating movement of the inner blades, which prevents hair chips, grease, etc. from adhering to the inner blades. Since the inner blade is separated into multiple pieces by a slit, the adhesion area for hair chips, fat, etc. becomes smaller, and the connecting force of the hair chips, fat, etc. decreases, and they easily fall off from the inner blade. This has the effect of preventing an increase in the sliding resistance of the inner blade, exposing the edge of the inner blade and maintaining good cutting quality, and furthermore, the slit allows unshaven hair to be removed from the adjacent blade. This has the effect of being able to cut with the inner blade that prevents unshaved areas.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of essential parts of an electric shaver equipped with an electric shaver blade that is an embodiment of the present invention, Fig. 2 is an exploded perspective view with a part of the same electric shaver blade cut away, and Fig. 3 is the same as above. FIG. 3 is a plan view of the inner cutter of the electric shaver blade. 1...Inner blade, 3...Inner blade, 6...Outer blade, 8...Sliding surface of inner blade, 9...Slit.

Claims (1)

[Scope of utility model registration request] The electric knife is composed of an inner blade in which a plurality of inner blades are arranged in parallel, and an outer blade in which the inner blades slide in reciprocating contact, and a plurality of slits are formed in the sliding contact surface of the inner blade with the outer blade. An electric razor blade characterized in that the positions of the slits of adjacent inner blades are shifted from each other with respect to the reciprocating direction of the inner blades.