JPS6010524Y2 - reciprocating electric razor - Google Patents

Description

[Detailed description of the invention] The present invention consists of an inner cutter in which a large number of blades are arranged in parallel and move back and forth, and an inner cutter that is attached to the free end of a flexible leg and is displaced only in the direction of the inner cutter's reciprocation. A supporting piece, an elastically deformable piece that is elastically deformed in a direction other than the reciprocating direction of the inner cutter, and has a hole into which the eccentric shaft of the rotating motor loosely fits; This invention relates to a reciprocating electric shaver consisting of a blade, and its purpose is to improve the shaving effect by slightly vibrating the outer blade with a simple configuration to efficiently introduce long beards and curly beards into the beard introduction hole.

Conventionally, the idea of slightly vibrating the outer cutter has been known, but its structure was complicated and had the disadvantage of being less practical.

This invention was made in view of this background, and the following is the first part.
Description will be made according to the embodiment shown in the figures and FIG.

In the figure, 1 is a housing, 2 is a rotary motor housed in the housing 1, 3 is an eccentric shaft attached to the output shaft of the rotary motor 2, and 4 is a balancer attached to the eccentric shaft 3.

Reference numeral 5 denotes a molded resin driver that converts motor rotational motion into reciprocating motion, and corresponds to the chain of a swing, with thin flexible legs 5a, 5a and free ends of the flexible legs 5a. The inner blade support piece 5b is supported by the inner blade support piece 5b and has a U-shaped overall shape and corresponds to the seat part of a swing. It should be noted that the cantilever-shaped elastically deformable piece 5c is elastically deformed in a direction other than the moving direction.

The elastically deformable piece 5c is provided with a hole 6 into which the eccentric shaft 3 is loosely fitted with a small gap, and a connecting protrusion 7 is provided at the center of the upper surface of the inner cutter support piece 5b to be connected to an inner cutter, which will be described later.

8 is connected to the free end of the flexible leg 5a via a pin 9 at one end, and the other end is attached to an outer blade support plate 11 attached to the U-shaped end of the outer blade 10 having a number of hair introduction holes. It is a scene piece that is connected via a pin 12 and is pivotally supported by a shaft 13 fixed to the housing 1 in the middle, and the displacement force of the driver 5 is transmitted to the outer cutter 1.
0 in the opposite direction to the moving direction of the inner cutter 14, which will be described later.

Reference numeral 14 denotes an inner cutter in which a large number of fan-shaped blades 14a, 14a, . . . come into contact with

15 is an outer cutter frame surrounding the outer cutter 10, and 16 is a dustproof gasket provided to protect the live part.

Such a reciprocating electric shaver operates as follows.

The eccentric shaft 3 of the motor 2 makes an orbital circular motion with respect to the output shaft 7, and the orbiting circular motion is deformed and absorbed by the elastic deformable piece 5c, and works together with the deformation of the flexible leg part 5a to cause the inner cutter support piece 5b to move. This is converted into a movement in the X direction shown in the figure, that is, a reciprocating movement of the inner blade.

At this time, when the free end of the flexible leg 5a moves to the right in the drawing, the inner blade support piece 5b, that is, the inner cutter 14 moves to the right, and the free end of the scene piece 8 moves to the left in the drawing. ,
Therefore, the outer cutter 10 moves to the left in the drawing.

That is, the outer cutter 10 vibrates in the opposite phase to the inner cutter 14.

FIG. 3 shows a different embodiment of the present invention, in which the shaft support hole of the seesaw piece 8 is formed in an elongated hole 8a, and the shaft 13 moves within the elongated hole 8a to connect the pivot center and the connecting end of the outer cutter 10. The outer cutter 10 has a variable length ratio between the center of swing and the connecting end of the flexible leg 5a.
This figure shows a reciprocating electric shaver with a structure in which the width of the swing is variable.

More specifically, 17 is a transmission lever that is supported around the center via a shaft 18, and has the shaft 13 that fits loosely into the elongated hole 8a of the seesaw piece 8 at one end, and the housing 1 at the other end. It has a protrusion 20 that transmits the movement of the slide button 19 exposed to the outside.

Note that 21 is a notch which is pressed by a spring 22 and engages with a wave-shaped recess 23 provided on the inner surface of the housing 1 to fix the transmission lever 17 at a desired position.

This embodiment is an excellent embodiment in that the width of the outer cutter 10 can be adjusted depending on the length of the beard and the degree of curliness to optimally select the effect of introducing the beard.

As described above, the reciprocating electric shaver of the present invention is provided with a seesaw piece whose one end is connected to the free end of the flexible leg, the other end is connected to the outer cutter, and the outer cutter is pivoted in the middle. It is characterized by being able to move in the opposite direction to the blade, and because the movement of the drive element is captured by a seesaw piece, it is possible to easily vibrate the outer blade slightly and obtain a razor with good hair introduction. Since the vibration directions of the inner cutter and outer cutter are in opposite phases, if the relative amplitude is kept as before, the absolute amplitude of the inner cutter can be reduced, reducing the load on the motor and reducing unpleasant housing vibration.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing a reciprocating electric shaver according to an embodiment of the present invention, and FIG. 2 is a sectional view showing only the main parts of the same. FIG. 3 shows a second embodiment of the present invention, and is an exploded perspective view of the main parts of a reciprocating electric shaver.

Claims (1)

[Scope of utility model registration request] An inner blade with many blades arranged in parallel and reciprocating;
An inner cutter support piece that is attached to the free end of the flexible leg and is displaced only in the direction of the inner cutter's reciprocating motion, an inner cutter support piece that is displaced only in the inner cutter's reciprocating direction, and an inner cutter support piece that is elastically deformed and rotated in a direction other than the inner cutter's reciprocating direction. In a reciprocating electric shaver in which the eccentric shaft of the motor is made up of an elastically deformable piece having a hole into which it loosely fits, and which converts rotational motion into reciprocating motion, and an outer cutter with which the inner cutter is in sliding contact, one end is It is characterized by providing a scene piece connected to the free end of the flexible leg, the other end connected to the outer cutter, and pivoted in the middle, so that the outer cutter can be moved in the opposite direction to the inner cutter. Reciprocating electric razor.