JPS6137958B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a reciprocating electric shaver that automatically removes hair and hair particles attached to each of the inner cutter blades of the inner cutter when the inner cutter moves back and forth. be.

Generally, in this type of electric shaver, viscous dirt made from skin fat is attached to each cutting edge of the inner cutter blade of the inner cutter body along with hair debris. While the above hair debris can be removed relatively easily with a brush, etc., the hair buildup sticks to the blade edge and cannot be easily removed with a brush. The current situation is such that there is a demand for a solution to be realized.

This invention was made in view of the above circumstances,
By reversing each reversible bulge formed on the inner cutter blade during reciprocating movement of the inner cutter body and vibratingly deforming each inner cutter blade with respect to its fixed part, the inner cutter blade This makes it difficult for hair debris and hair scale to adhere to the blade edge of the blade, and automatically and reliably removes hair debris that adheres to the blade edge.

An embodiment of the present invention will be described below with reference to the drawings.

In Fig. 1, 1 is a case body that houses a motor 2, etc., 3 is a blade case fitted on the top of the case body 1, and an outer blade case 3 has an inner blade 4 in sliding contact. A blade 5 is stretched. 6 is an eccentric cam fixed to the rotating shaft 7 of the motor 2; 8 is a vibrator connected to the eccentric cam 6 via a lever 9; It is connected to the holder 11 of the blade body 4, and when the eccentric cam 6 rotates, the lever 9 causes the vibrator 8 to linearly reciprocate in the left-right direction (in the direction of arrows a and b), so that the inner blade body 4 is also moved. They are designed to reciprocate in the same direction. Reference numeral 12 represents a compression spring for the inner blade body 4, and reference numeral 13 represents a hair debris intrusion prevention member made of sponge or the like.

The inner cutter body 4 includes a plurality of inner cutter blades 14 made of stainless steel plates arranged in parallel at a predetermined distance from each other.
(14 ₁ , 14 ₂ . . . 14) and a pipe 15 made of brass or the like to which these inner cutter blades 14 are fixed in a skewer shape, and if necessary, a reinforcing plate (not shown) or the like is installed. It may be attached. This inner blade body 4 includes, for example, elastic protrusions 16 and 1 at both ends of the holder 11.
6, each of the engaging protrusions 17 formed on the pipe 15
It is firmly held in the holder 11 by fitting into the openings 15a at both ends (FIG. 2).

As shown in FIG. 2, each inner cutter blade 14 has a base portion 14b that corresponds to the cutting edge portion 14a.
Reversible bulges 18 protruding from one side 12c are formed by press working, and each bulge 18
are connected by a bar-like weight body 19 in the form of a skewer. This bar-shaped weight body 19 is used to invert each of the bulges 18 by its inertia at the maximum amplitude position during reciprocating motion of the inner cutter body 4, so that the bulges 18 are It constitutes a strain generation source that causes the small blade 14 to vibrate and warp with respect to its fixed portion, that is, the pipe 15. In the case where each inner cutter blade 14 is fixed by a mold, this molded portion may be used as the fixed portion.

In the above configuration, when the inner blade body 4 shifts to one side in the reciprocating direction during reciprocating motion and then tries to move to the other side, an inertial force is applied to the rod-shaped weight body 19. Therefore, this weight body 19
The bulging portion 18 of each inner cutter blade 1 connected in series changes from the bulging state shown by the solid line in FIG. 3 to the inverted state shown by the dashed-dotted line in the same figure, with a slight delay in the movement of the inner cutter body 4. As a result, each inner cutter blade 14 is also bent back as shown in the figure, and this action is repeated in a vibratory manner due to the high-speed reciprocating motion of the inner cutter body 4. . For this reason, the inner cutter blade 14
Of course, the hair particles adhering to each blade edge part 14a are shaken off, and even if the hair is sticky with fat, it is peeled off from the blade edge part 14a due to the surface strain effect generated on the blade edge part 14a. to ensure that it is removed. If the inner cutter blade 14 has a thickness of about 100 to 180μ, it can be sufficiently deformed, but a thickness of about 120μ deforms the bulge 18 like a snap and effectively causes surface distortion. is recommended.

FIG. 4 shows an application example of the above razor, in which the movement of the rod-shaped weight body 19 is stopped when the inner cutter body 4 reciprocates. That is, in the same figure, reference numerals 20 and 20 are stopper members provided oppositely on both left and right end surfaces 19a and 19b of each of the weight bodies 19, and 21 and 21 are stopper members fitted into the blade case 3, respectively. Pressure rod fixed with 20,
22, 22 are operation buttons fixed to the press rods 21, 21, and both operation buttons 22 are provided with spring members 23, 2.
The outward spring force is applied by 3. In the case of this configuration, when the inner blade body 4 reciprocates, both the operation buttons 22, 22 are pushed in the direction of the white arrow as shown in FIG. When the inner cutter blades 14 are brought into contact with both end surfaces 19a and 19b, the force of the inner cutter body 4 and the holder 11 to move causes each inner cutter cutter blade 14 to be vibrated and deformed to remove hair and debris as in the previous embodiment. Can remove hair stains.

As described in detail above, the present invention connects each bulge formed on a plurality of inner cutter blades with a rod-shaped weight body,
Since each inner cutter blade is vibrated and deformed during the reciprocating movement of the inner cutter body, the inner cutter blade itself is deformed without using a brush or the like to remove hair or hair particles attached to the inner cutter blade. can be easily removed with
It is possible to provide a reciprocating electric shaver that can extend the life of the cutting edge and the like.

[Brief explanation of the drawing]

FIG. 1 is a cutaway front view of the head of an example of a reciprocating electric shaver according to the present invention, FIG. 2 is a perspective view of the inner blade of the razor, FIG. 3 is an explanatory view of the same operation, and FIG. 4 is a cutaway front view showing an application example of the same main part,
FIG. 5 is a sectional view showing the state of use of FIG. 4. 4... Inner blade body, 5... Fixed part (pipe), 14
. . . Inner cutter blade, 14a . . . Cutting edge portion, 14b . . . Base portion, 14c .

Claims (1)

[Claims] 1. In a reciprocating electric shaver in which the inner cutter body 4 is constructed by integrally arranging a plurality of inner cutter blades 14 in parallel with each other at a predetermined distance, each base 1 of the inner cutter blades 14 is
A reversible bulge 18 is formed on one side 14c of 4b by press working, and each of the bulges 18 is connected in a skewer shape, so that the inner blade 4 is at the maximum swing width position when reciprocating. It has a rod-shaped weight body 19 that inverts each of the bulging portions 18 when the inner cutter blade 14 is deflected to its fixed portion 15. A reciprocating electric shaver with a strain generation source that causes distortion and deformation.