JPH10118358A - Electric razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To not cut skin even if introduced to an outer blade through a mus tache hair hole of the outer blade. SOLUTION: The electric razor comprises an outer blade 19 having a number of holes for mustache hair and an inner blade body 30 having a base member 27 projecting a number of inner blades 28, 29 thereon. The inner blade body 30 is mounted in the outer blade 19. The edges 28b, 29b of inner blades 28, 29 are moved as sliding inside periphery of the outer blade 19 thereby mustache is cut with the inner blades 28 and 29 together with the outer blade 19. In this case the interval E of the edges 28b and 29b opposing each other to the inner blades 28 and 29 is formed narrower than the width D of the hole 19b for introducing mustache.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric shaver which is used for cutting, for example, mustaches and hair balls generated in sweaters and the like.

[0002]

2. Description of the Related Art An electric shaver of this type is provided with an outer blade having a large number of mustache introduction holes and an inner blade having a number of inner blades protruding from a base portion. It is considered that an electric razor that is arranged in the inner blade and the cutting edge of the inner blade is slidably moved on the inner surface of the outer blade so that the beard is cut by the inner blade and the outer blade is considered. I have. One example of this is shown in FIGS.

In FIG. 4, reference numeral 1 denotes an inner blade of an electric razor. The inner blade body 1 includes a pair of adjacent one-to-one inner blades 2,
2, a plurality of inner blade sets 3 projecting from a base member (base portion) 4 at equal pitches. The inner blades 2, 2 of the inner blade set 3 are bent in such a manner that the upper ends 2a, 2a are inclined in directions away from each other (opposite directions).
The upper ends 2a, 2a to the base are overlapped with each other. The inner blade 1 is disposed inside the outer blade 5 shown in FIG. 5, and the cutting edge 2b of the inner blade 2 is applied to the inner surface of the outer blade 5 by the spring force (biasing force) of the spring 6 in FIG. It is imposed. In FIG. 5, reference numeral 5a denotes a number of mustache introduction holes provided in the outer cutter 5.

[0004] In this configuration, the inner blade 2 is moved in the direction indicated by an arrow 7 in FIG.
As shown, the outer blade 5 is driven to the left.
Is pressed against the skin 8 such as the user's cheeks and jaws, and the mustache 9 projecting from the skin 8 is caused to enter the mustache introduction hole 5a, so that the beard 9 is located between the cutting edge 2b of the inner blade 2 and the outer blade 5. Can be cut. In FIG. 4, A is the distance between the inner blade sets 3 and 3, and B is the distance between the cutting edges 2 b and 2 b of the pair of inner blades 2 and 2 constituting each inner blade set 3.

[0005]

However, since the interval A between the inner blade sets 3 and 3 is larger than the interval between the mustache introduction holes 5a of the outer cutter 5, a part C of the skin 8 moves away from the mustache introduction holes 5a. There is a possibility that a part of the skin 8 may be cut by the inner blade 2 by entering the outer blade 5.

Accordingly, an object of the present invention is to provide an electric razor that can prevent the skin that enters the outer blade from being cut through the mustache introduction hole of the outer blade.

[0007]

In order to achieve this object, an invention according to claim 1 is provided with an outer blade having a plurality of mustache introduction holes and an inner blade body having a number of inner blades protruding from a base portion. And the inner cutter body is disposed in the outer cutter,
In the electric razor in which the cutting edge of the inner blade is slid and moved on the inner surface of the outer blade, and a beard is cut by the inner blade and the outer blade, the cutting edge interval between a pair of adjacent inner blades whose cutting edges face each other. Is an electric shaver formed to be narrower than the width of the mustache introduction hole.

The invention according to claim 2 is characterized in that a coating layer made of a material having low frictional resistance is provided on a surface of the inner cutter opposite to the cutting edge side.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In FIG. 3, reference numeral 10 denotes a main body of the electric razor, 11 denotes a driving motor mounted in the main body 10, and 11a
Reference numeral denotes an output shaft of the drive motor 11, reference numeral 12 denotes an eccentric cam attached to the output shaft 11a, and reference numeral 12a denotes an eccentric shaft protruding at a position eccentric from the rotation center of the eccentric cam 12. And
When the rotation of the drive motor 11 is operated, the output shaft 11a of the drive motor 11 and the eccentric cam 12 rotate integrally,
The eccentric shaft 12a of the eccentric cam 12, which is rotated integrally with the eccentric cam 12, moves in the engagement groove 13a of the reciprocating member 13 as shown in FIG.
(b) The reciprocating member 13 is reciprocated to the left and right in FIG. 3 (a) by being moved in a direction perpendicular to the sheet of paper (left and right in FIG. 3 (a)).

On the reciprocating member 13, a mounting shaft 14 is fixed, and an inner blade assembly 15 and an outer blade assembly 16 are arranged in this order. This outer blade assembly 16
The outer blade base 17 has a rectangular frame shape in plan view and is detachably attached to the upper end portion of the razor body 10. The outer blade base 17 is coaxially protrudingly opposed to both ends in the longitudinal direction of the outer blade base 17. Shaft-shaped support projections 17a, 17a, a rectangular frame-shaped outer blade mount 18 whose longitudinal ends are rotatably held by the support protrusions 17a, 17a, and an outer blade mount 1.
8 has an outer blade 19 whose peripheral edge is held. This outer blade 1
9 has two semicircular bulges 19a, 19a as shown in FIG. 3B, and extends in the left-right direction as shown in FIG. Moreover, the outer cutter 19 has a large number of mustache introduction holes 19b in which the width (interval) of the outer cutter 19 in the longitudinal direction is set to D.

The inner blade assembly 15 is attached to the mounting shaft 14.
Support member 20 for mounting an urging mechanism detachably held on
And an inner blade urging mechanism 21 disposed on the support member 20.
And the above-described bulging portions 19a, 1 on the inner blade urging mechanism 21.
9a has a pair of inner blades 22, 22 arranged corresponding to 9a.

The inner blade urging mechanism 21 includes a pair of cylindrical lower spring receivers 2 attached to the upper end of the support member 20.
3, 23 (see FIG. 3B), a support shaft 24 erected at the center of the bottom of each lower spring receiver 23, and each of the lower spring receivers 23 is supported by each support shaft 24 so as to be vertically movable. An upper spring receiver 25 is provided so as not to come off, and springs (biasing means) 26 are interposed between the respective spring receivers 23 and 25.

As shown in FIGS. 2 and 3 (a), each inner blade body 22 has a resin-made inner blade base member (base portion) 27 as an inner blade mounting base extending in the left-right direction. And a large number of inner blade sets 30 each consisting of a pair of inner blades 28 and 29 arranged at a constant pitch in the longitudinal direction of the base member 27. The base of each of the inner blades 28 and 29 is embedded in and fixed to the base member 27. The base member 27 is attached to the upper spring receiver 25. Moreover, the pair of inner blades 28, 29 of each inner blade set 30 are formed with inclined blade tips 28a, 29a that are inclined in a direction approaching each other.

Further, as shown in FIG. 1, the interval E between the cutting edges (tips) 28b, 29b of the inclined blade tips 28a, 29a is smaller (narrower) than the interval D between the mustache introduction holes 19a provided in the outer cutter 19. ) Is formed. Also, this inner blade 28,
A coating layer 31 made of a material having low frictional resistance, for example, a fluorine resin, is provided on the surface of the 29 opposite to the cutting edges 28b, 29b (that is, the surfaces opposite to each other).

The inner cutter 2 of each such inner cutter body 22
The cutting edges 28b, 29b of the 8, 29 are provided with the spring 29 described above.
Thus, the outer blade 19 is lightly pressed (lightly pressed) against the inner surface of each bulging portion 19a.

Next, the operation of the electric shaver having such a configuration will be described.

When the power switch (not shown) is turned on by operating the switch portion SN shown in FIG. 3B to rotate the drive motor 11, the output shaft 11a of the drive motor 11 The eccentric cam 12 rotates integrally and the eccentric cam 1
Eccentric shaft 12a of the eccentric cam 12 rotated integrally with the eccentric cam 12
Is moved in the engagement groove 13a of the reciprocating member 13 in a direction perpendicular to the paper surface in FIG. 3A (the left-right direction in FIG. 3B), and the reciprocating member 13 is moved in FIG. It can be reciprocated right and left. As a result, the inner blade body 22 bulges 19 a of the outer blade 19.
It is made to reciprocate in the direction perpendicular to the paper surface in FIG. 3A (the left-right direction in FIG. 3B).

In this state, when the outer surface of the outer blade 19 is pressed against the skin 32 of the user as shown in FIG.
The beard 33 projecting from the skin 31 is introduced inside from the beard introduction hole 19b of the outer blade 19 as shown in FIG. At this time, the skin 32
Of the outer blade 19 enter the mustache introduction hole 19b.

However, for example, the inner blades 28 and 29
1 moves from the right side to the left side as shown by the arrow 34, and FIG.
In the position where the inner blade 28 faces the inner surface of the rib 19c of the outer blade 19 as shown in (a), since the inner blade 29 has moved to the substantially center side of the beard introduction hole 19b, the cutting edge 29b of the inner blade 29 Is prevented from penetrating into a part 32a of the skin 32.
The rib 19c is a portion remaining between the mustache introduction holes 19b, 19b by forming (piercing) the mustache introduction hole 19b in the outer cutter 19.

When the inner blades 28 and 29 move from the position shown in FIG. 1A to the position shown in FIG. 1B, the coating layer 31 on the surface of the inner blade 28 opposite to the cutting edge 28b hits the whisker 33. However, since the coating layer 31 has a low coefficient of friction, the inner blade 2
8 moves over the beard 32 to the position shown in FIG. 1C without resistance, so that the inner blade 28 does not irritate the skin 32.

At this time, the inner blade 28 lifts a part 32a of the skin 32 that has entered the mustache introduction hole 19a while moving, so that the cutting edge 29b of the inner blade 29 faces the mustache introduction hole 19. In this case, it is possible to prevent the cutting edge 29b from biting into a part 32a of the skin 32. Then, the inner blades 28 and 29 are further moved leftward, so that the inner blades 29 and 29 are moved.
The cutting edge 29b starts to cut the beard 33.

The inner blades 28 and 29 are adapted to move at a speed of about 7000 cpm and an amplitude of about 2.5 mm. Therefore, the average speed of the inner blades 28 and 29 is about 580 mm /
As quickly as a second, the inner blade 28 is moved and the part 32a of the skin 32 that has entered the beard introduction hole 19a is lifted upward, and the blade edge 29b of the inner blade 29 is moved to the lifted position.
Since there is no time for the part 32a of the skin 32 to enter by its own elasticity before the edge comes, the cutting edge 29b
Biting into a will be avoided.

[0024]

As described above, according to the first aspect of the present invention, the outer blade provided with a plurality of mustache introduction holes and the inner blade body having a plurality of inner blades protruding from the base portion are provided. A body is disposed in the outer blade, and the edge of the inner blade is slid and moved on the inner surface of the outer blade, so that an electric razor in which a beard is cut by the inner blade and the outer blade, Since the blade interval between a pair of adjacent inner blades whose blade edges face each other is formed to be narrower than the width of the beard introduction hole, it is possible to cut the skin that enters the outer blade from the beard introduction hole of the outer blade. Can be prevented beforehand.

Further, the invention according to claim 2 has a configuration in which a coating layer made of a material having low frictional resistance is provided on the surface of the inner blade opposite to the blade edge side. Even if the coating layer on the opposite side hits the mustache and moves over, the inner blade can minimize the irritation to the skin.

[Brief description of the drawings]

FIGS. 1 (a) to 1 (c) are explanatory views of the operation of the inner blade of the electric shaver of FIG. 3 according to the present invention.

FIG. 2 is an enlarged sectional view of the inner blade assembly shown in FIG.

FIG. 3A is a cross-sectional view of an electric shaver including the inner blade shown in FIGS. 1 and 2, and FIG. 3B is a cross-sectional view taken along line FF of FIG.

FIG. 4 is an explanatory view of an inner blade of a conventional electric razor.

5 (a) to 5 (c) are views for explaining the operation of the inner blade of the electric shaver shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Razor main body 19 ... Outer blade 19b ... Beard introduction hole 27 ... Base member 28, 29 ... Inner blade 28b, 29b ... Blade edge 30 ... Inner blade 31 ... Coating layer 32 ... Skin 33 ... Beard

Claims (2)

[Claims] 1. An outer blade having a plurality of mustache introduction holes and an inner blade body having a number of inner blades protruding from a base portion, wherein the inner blade body is disposed in the outer blade. In an electric shaver in which the cutting edge of the inner blade is slidably moved on the inner surface of the outer blade, and a beard is cut by the inner blade and the outer blade, the cutting edge of a pair of adjacent inner blades whose cutting edges face each other An electric shaver, wherein an interval is formed to be narrower than a width of a beard introduction hole. 2. The electric shaver according to claim 1, wherein a coating layer made of a material having low frictional resistance is provided on a surface of the inner cutter opposite to a cutting edge side.