JPS6217024Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rotating inner blade of an electric razor, and more specifically, a plurality of blades are arranged on a horizontal base with three or four blades standing upright on the circumference of the rotating inner blade. The inside of the electric razor is assembled into individual pieces to facilitate press punching of the horizontal base, provides elastic force by providing a through hole in the horizontal base, and has a mass distribution unevenly distributed near the periphery. Regarding the blade.

Conventionally, the rotating inner cutter has multiple arms extending radially horizontally from the rotating shaft to form a horizontal base, which corresponds to the slit cutter of the outer cutter, in contrast to the outer cutter that has a slit-shaped cutter around it. On the circumference, these arms stand upward at equal intervals, and a blade is provided at the top end of each vertical part, or two adjacent arms are made common in the horizontal part, and y It is known to have a letter-shaped horizontal base and an upper end that stands upward.

However, this type of rotating inner cutter is generally made by pressing a steel plate into a certain shape and finishing it by heat treatment. The number of deep cuts into the horizontal base is increased.

This deep cut in the horizontal base corresponds to a narrow radial protrusion in the shape of a die for press punching. Therefore, if there are many deep cuts at the horizontal base of the rotating inner cutter, the number of thin protrusions on the die will increase.
Easily damaged during press punching.

In order to solve this problem, if you try to reduce the number of horizontal bases and branch many upright parts from one horizontal base, the area of the horizontal bases will increase, the overall weight will increase, and it will not be possible to start easily. In addition, the mass distribution is unevenly distributed near the rotating bearing, so rotation is not smooth, and elasticity in the vertical direction along the radius is poor, affecting cutting quality. This results in the disadvantage that it is difficult to discharge.

The purpose of this invention is to create an outer cutter with a slit-shaped cutter around it, which will not cause damage to the punching die even if the number of cutting edges is increased for the rotating inner cutter, and will not cause any adverse effects due to an increase in the area of the horizontal base. On the other hand, in a rotating inner blade of an electric razor that rotates in a fixed position and has a large number of erect blade parts that come into pressure contact with the slit-shaped blade part from the inside and cut the hair guided from the slit, a rotary bearing is used. Three or four horizontal bases are integrally formed in a radial manner so that the space between adjacent horizontal bases is deeply cut from the outer periphery, and the tip of each horizontal base is branched into multiple or more parts. The upper end of each upright portion is formed in the blade portion, and in order to impart elasticity to the horizontal base and to unevenly distribute the overall mass distribution toward the periphery, a transparent portion is formed in each of the horizontal bases. An object of the present invention is to provide a rotating inner blade for an electric razor, which is characterized in that a hole is formed therein. Embodiments of the present invention will be described in detail below with reference to the drawings.

Reference numeral 10 denotes a rotating bearing, which opens downward in a bowl shape and has a locking hole 12 at the top of the center, and when it can be covered by a drive shaft (not shown), it is guided by the bowl-shaped inner wall and the drive shaft is inserted into the locking hole. 12 so that it can be easily guided and securely locked.

Reference numeral 14 denotes a support shaft that stands integrally above the locking portion 10.

Reference numeral 16 denotes a horizontal base, and 4
It is divided into individual parts and extends outward like flower pots.

Reference numeral 22 denotes an upright portion, which is branched into three fingers at the tip of each horizontal base 16 and stands vertically upward.

Reference numeral 24 denotes a blade section, which is provided at the upper end of each standing section 22 and arranged at equal intervals on the circumference.

A through hole 26 is bored in the center of each horizontal base 16, and its size is limited so that the remaining rib portions of the horizontal base 16 have sufficient strength to support the three upright portions 22. Ru.

Since the structure is as described above, the cutting depth is 20
However, since the notches are located at a large angle range of 90° from each other, it is easy to press out.
That is, in the manufacturing process of the rotary inner cutter, only four thin protrusions of the press punching die are sufficient, and chipping of the die during manufacturing is extremely reduced.

Furthermore, by providing three horizontal bases 16 radially, the cuts 20 are present over a larger angular range of 120°, making press punching easier.

In this way, the number of horizontal base portions 16 is three or four, which allows the cuts 20 to exist in a wide angle range as described above. In the case of two, it becomes difficult to impart elasticity to the horizontal base 16.

In addition, the through hole 26 provided in the horizontal base 16 reduces the overall weight and allows for easy starting.Since the mass distribution is omnipresent near the periphery, the moment of inertia is increased and rotation is smooth. The blade part 24 is highly elastic in the vertical direction along the radius, and the blade part 24 is securely pressed against the slit-shaped blade part (not shown) of the outer blade, improving cutting quality, and the cut hair is directed downward through the through hole 26. Can be discharged. In addition, the through hole 26 can be easily punched out and no finishing work is required, so the manufacturing cost is greatly reduced.

In addition, if configured as in the present invention, a large number of blades can be provided as the rotating inner blade, and the blade portion 24
Since the spacing between the blades can be freely determined, two pairs of blades are provided close to one horizontal base 36 as shown in FIG. It is very effective that the plurality of blade parts 34 can be arranged close to each other very easily so that the hair can be reliably cut with the presser foot and the rear blade.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. It is.

[Brief explanation of the drawing]

The drawings show an embodiment of the rotating inner cutter of the electric razor according to the present invention, and FIG. 1 is a plan view thereof, FIG. 2 is a bottom view, FIG. 3 is a front view, and FIG. 4 is a view taken from A-A in FIG.
A' end view, and FIG. 5 shows a plan view of a rotary inner cutter in which a plurality of blade portions 34 are arranged close to each other. 10... Rotating bearing, 12... Locking hole, 14...
Support shaft, 16, 36... Horizontal base, 18... Support plate, 20... Notch, 22... Standing part, 24, 34
...Blade, 26...Through hole.

Claims (1)

[Utility Model Registration Claim] A rotating inner blade for an electric razor which rotates in a fixed position and has an outer blade with slit-shaped blade portions disposed around the periphery, and which has multiple upright blade portions that are pressed against the slit-shaped blade portions from the inside to cut hair guided through the slits, wherein three or four horizontal bases are integrally formed radially from a rotating bearing so that adjacent horizontal bases are deeply cut into from the outer periphery, the tip of each horizontal base is branched into multiple or more parts that stand upward, and the upper end of each upright part is formed into the blade portion, and a through hole is drilled in each horizontal base so as to impart elasticity to the horizontal bases and to bias the overall mass distribution towards the periphery.