JPS581949B2 - electric razor blade - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric razor blade, and an object of the present invention is to obtain an electric razor blade that is inexpensive and of stable quality.

FIG. 1 shows a conventional example of such an electric razor blade.

In the figure, the inner cutter 1 is composed of an arcuate inner cutter blade 2 and a base 3 that holds the inner cutter blade 2 parallel to each other and at regular intervals.

The outer cutter 4 is formed by bending a thin plate into a chevron shape, and has a large number of hair introduction holes 5 formed therein.

The inner cutter 1 is reciprocated by a driver 6 continuously driven by, for example, a motor, slides into contact with the outer cutter 4, and cuts the hair that has entered inward through the hair introduction hole 5.

The outer cutter 4 is fixed to a frame (not shown).

The inner cutter 1 of such a conventional electric razor blade has the drawback that it is difficult to assemble a large number of independent inner cutter blades 2 and maintain them at regular intervals.

For example, when inserting the inner blade 2 at the same time as molding the plastic base 3 to form the inner cutter 1 by so-called insert molding, the dimensional accuracy of the inner blade 2 inserted into the insert molding mold is strongly required. In addition, it is difficult to insert a large number of inner cutter blades 2 into a mold, and since each inner cutter blade 2 is independent, the inner cutter 2 after completion is likely to warp in the longitudinal direction and crack. Ta.

The present invention has been made in view of such drawbacks, and the second
An explanation will be given according to the embodiment shown in FIG. 3 and FIG. 3 (however, only the inner cutter 10 which is different from the conventional example is shown).

The inner blade 11 is formed into a continuous corrugated long plate made of, for example, a steel plate, and has a blade portion 11a hardened by quenching so as to withstand sliding wear at one end in the width direction of the long plate.

The base 12 is made of a synthetic resin material, and is used to fix the end portion of the inner blade 11 opposite to the blade portion 11a and hold the blade portions 11a of the inner blade 11 at a constant interval.

That is, the slits 13 are formed in the two opposing arms of the base 12.
are arranged at regular intervals and in a staggered manner, and when the wave-shaped curved portions 11b of the inner blades 11 are sequentially fitted and locked into the slits 13, the inner blades 11 are alternately tilted in opposite directions to the base 12. Fixed.

As described above, the inner cutter 10 is constituted by the inner cutter blade 11 and the base 12, and is reciprocated by a driver that engages with the base 12 as in the conventional example.

As described above, the electric razor blade of the present invention has an inner blade that is formed into a long continuous waveform and has a cutting portion at one end in the width direction of the long plate, and a slit that fixes the waveform curved portion of the inner blade in a staggered manner. It is composed of an inner cutter consisting of a base arranged on the inner cutter, and an outer cutter with which the blade portion of the inner cutter comes into sliding contact, and is not composed of a large number of independent inner cutter blades. Since the inner cutter blades are continuous to each other, only one inner cutter blade needs to be handled when assembling the inner cutter, improving work efficiency and making the inner cutter more rigid than conventional examples. This has the effect of reducing warpage in the longitudinal direction compared to conventional models.Furthermore, the inner blades are alternately tilted and fixed to slits provided in the base, so you can stroke your beard with the inner blades. At the same time, the elasticity of the wave-shaped curved part increases the force of the beard elastically, allowing the inner blade to cut sharply. By suppressing the increase in load when cutting the beard, it prevents the beard from being pulled and reduces power consumption. This has the effect of making it possible to measure the inner cutter blade, and also has the effect that the inner cutter blade can be fixed to the base simply by fitting the inner cutter blade into the slit of the base, making it easier to fix. .

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing a conventional electric razor blade to be compared with the present invention and a driver connected to the electric razor blade; FIG. 2 is an exploded perspective view showing an inner cutter in an embodiment of the present invention; Figure 3 is a plan view of the same as above. DESCRIPTION OF SYMBOLS 10... Inner blade, 11... Inner blade, 11a... Blade part, llb... Waveform curved part, 12... Base The stand.

Claims (1)

[Claims] 1 Consists of an inner blade formed of a long plate in a continuous waveform and having a cutting part at one end in the width direction of the long plate, and a base having slits arranged in a staggered manner to fix the wave-shaped curved part of the inner blade. An electric razor blade consisting of an inner cutter and an outer cutter with which the blades of the inner cutters come into sliding contact.