JPH0549760A - Reciprocating type electric razor - Google Patents

Abstract

PURPOSE:To permit the speedy razing for the recessed place such as under the axilla by arranging a net shaped outer blade which has a U-shaped section and is curved in a reciprocating direction and an inner blade which has a fan shape at the upper edge on an inner blade base and reciprocatingly moves along the curvature of the outer blade. CONSTITUTION:An outer blade 2 which has a U-shaped section and is curved in a reciprocating direction is arranged at the upper edge of a razor body 1, and an inner blade 3, driving element 4 for connecting the inner blade 3 with the upper edge through a spring 8, motor 5 for swing-moving the driving element 4, battery 6, etc., are accommodated into the razor body 1. The inner blade 3 is arranged on an inner blade base so that an inner blade is formed to a fan shape, and the reciprocating movement along the curvature of the outer blade 1 is performed by the swing of the driving element 4. The driving element 4 is set to the state where the driving element 4 can move only in the longitudinal direction of the driving element 4 as the energizing direction of the inner blade 3 to the driving element 4 by an installation spring 8. With this constitution, the outer blade can be surely fitted into the recessed place such as under the axilla, and the speedy and comfortable razing is enabled.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to reciprocating electric razors.

[0002]

2. Description of the Related Art Conventionally, reciprocating type and rotating type razors have been known. The former is cross section U
The inner blade of the letter-shaped outer blade is in contact with the inner blade that makes a reciprocating linear motion, and the latter is the inner blade of the outer blade that is rotatably driven.

[0003]

By the way, as shown in FIG. 11, when shaving hair in a recessed portion such as the armpit, it is difficult to shave because the conventional rotary electric shaver has a large diameter, and the diameter is small. Then, there is a problem that it takes a long time to shave, and the conventional reciprocating electric shaver has a problem that it is difficult to shave because the blade is linear.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a reciprocating electric razor capable of quickly and comfortably shaving a recessed portion such as the armpit. is there.

[0005]

According to the present invention, however, a net-shaped outer blade having a U-shaped cross section and curved in the reciprocating direction and an inner blade blade having a fan-shaped upper end on the inner blade base are provided. It is characterized in that it is provided with an inner blade that is arranged to reciprocate along the curve of the outer blade. According to the present invention, since the outer blade is curved, the outer blade surely fits in a recessed portion such as under the armpit.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiment. In FIG. 1, a cross section U is formed at the upper end of the razor body 1.
An outer blade 2 having a character shape and curved in the reciprocating direction is arranged, and an inner blade 3 and a driver element 4 having the inner blade 3 connected to an upper end thereof via a spring 8 in the razor body 1. ,
A motor 5, a battery 6 and the like for causing the driver 4 to perform an oscillating motion are stored. The inner blade 3 here is formed by disposing the inner blade in a fan shape on the inner blade base, and the swinging of the driver 4 causes the inner blade 3 to reciprocate along the curve of the outer blade 1. Take action. In this case, the inner blade 3 is attached to the driver element 4 in a state in which it can move only in the longitudinal direction of the driver element 4, which is the urging direction of the spring 8.

The driving of the driver 4 by the motor 5 is supported by a shaft 40 in an eccentric annular cam groove provided in a cam 9 attached to the output shaft of the motor 5, as shown in FIG. By engaging the lower end engaging portion of the driver element 4 or pressing the side surface of the driver element 4 which is urged by the spring 11 in one direction by the outer peripheral surface of the cam 9 as shown in FIG. It can be carried out. FIG. 4 shows a case where the engaging element 41 provided on the side surface of the driver element 4 is engaged with the eccentric annular cam groove of the cam 9.

Further, as shown in FIGS. 5 and 6, the inner blade 3
The inner blade 3 may be reciprocated by a linear motor in which the magnetized portion 30 is formed on the inner blade base and the drive coil 31 facing the magnetized portion 30 is provided. In the figure, reference numeral 32 is a drive control circuit block. In this case, the outer blade 2
Since the contact pressure between the inner blade 3 and the inner blade 3 can also be given by the linear motor, the spring 8 for pushing up the inner blade 3 becomes unnecessary.
In FIG. 7, in order to prevent the driving speed from decreasing due to the load applied to the inner blade 3, the Hall IC 34 and the speed detection block 33 are provided to measure the driving speed of the inner blade 3, and the measurement result is fed back to the drive control circuit block 32. FIG. 8 shows a configuration in which the drive speed is variable by further providing a control volume 35, and FIG. 9 shows a configuration in which a pushing force control volume 36 is provided. It is shown that the contact pressure between the inner blade 3 and the outer blade 2 can be controlled.

The outer blade 2 having a U-shaped cross section and curved in the reciprocating direction can be formed by electroforming.
That is, as the base material 20 shown in FIG.
A material made of a current-carrying material such as Bs or Fe is used, and it is preliminarily refined to facilitate squeezing. Then, as shown in FIG.
After that, apply an exposure through an emulsion mask and print as shown in (c) of the same figure, and then develop as shown in (d) of the same figure, and perform drawing processing in this state. The cross section is U-shaped and curved in the reciprocating direction. After that, as shown in FIG. 6 (e), electroplating is performed to form the sink portion 22, then the plating surface is oxidized with a chromate solution, and further with Ni electroforming solution.
As shown in (f), electroforming is performed to form the electroformed portion 23.
After that, as shown in FIG. 6G, the outer blade 2 is obtained by removing the base material 20.

[0010]

As described above, in the present invention, since the outer blade is curved, the outer blade surely fits in the recessed portion such as under the armpit, and therefore the recessed portion is formed. Can be quickly and comfortably shaved.

[Brief description of drawings]

1A is a front view, FIG. 1B is a side view, and FIG. 1C is a sectional view.

2A is a sectional view and FIG. 2B is a perspective view.

3A is a cross-sectional view of another drive configuration, and FIG. 3B is a perspective view.

4A is a cross-sectional view of another drive configuration, and FIG. 4B is a perspective view.

5A is a perspective view of still another drive configuration, and FIG. 5B is a schematic side view.

FIG. 6 is a block circuit diagram of the above.

FIG. 7 is another block circuit diagram.

FIG. 8 is another block circuit diagram.

FIG. 9 is another block circuit diagram.

10A to 10G are explanatory views of a method of forming an outer blade.

FIG. 11 is a perspective view of a usage example.

[Explanation of symbols]

 2 outer blade 3 inner blade

Claims (1)

[Claims] 1. A net-shaped outer blade having a U-shaped cross section and curved in the reciprocating direction, and an inner blade blade disposed on the inner blade base so that the upper end has a fan shape. A reciprocating electric razor characterized by having an inner blade that reciprocates.