JPH0788258A - Electric shaver - Google Patents

Abstract

PURPOSE:To provide an electric shaver which can suppress the skin biting into a slit cutter without hindering introduction of beard to the slit cutter. CONSTITUTION:An electric shaver concerned is provided with two net cutters 10, 10 installed in line at a certain spacing and a slit cutter 20 to be located between them, wherein the slit cutter 20 is composed of two mating piece and a coupling piece 21b to form an approx. channel shape, and in these pieces a number of slit-form long holes 21c are formed which are formed by continuing the mating piece forming parts and the coupling piece forming part in such an arrangement that they 21c are inclined out of perpendicular intersection with the reference line stretching in the longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a so-called three blade having two net blades and one slit blade disposed therebetween.
Regarding a single-blade electric shaver.

[0002]

2. Description of the Related Art An electric shaver of this type is a single-blade type having one net blade or a two-blade type having two net blades.
Compared with the single-blade type, it has the advantages of improved deep shaving performance and reduced shaving time, and is therefore rapidly becoming popular in recent years for dark beards. As this type of electric shaver, there is one having a structure shown in FIGS. 16 is a cross-sectional view of a main part, FIG. 17 is a side view of the slit blade, FIG. 18 is an exploded perspective view of the slit blade, and FIG. 19 is a plan view of the slit blade, which will be briefly described below.

This electric razor has two net blades 10 and 10 and one slit blade 20 as a main part of a three-blade type.

The net blade 10 includes an outer blade 11 and an inner blade 13 as an inner blade base.
It is composed of an inner blade block 12 arranged in 14 and a cassette 15.
The inner blade base 14 is connected to a drive rod that performs a reciprocating motion obtained by converting the rotation of the motor. The cassette 15 has a substantially U-shaped cross section.
The outer blade (11) is attached so as to form a letter shape, and the inner blade block (12) is housed in the cassette (15) so that the inner blade (13) slidably contacts the inner surface of the outer blade (11).

The slit blade 20 comprises an outer blade 21, an inner blade 22, a receiving member 23, mounting frames 24 and 24, compression springs 25 and 25, and a joint 26. The outer blade 21 is made of a thin metal plate and is formed into a substantially U shape by the facing pieces 21a, 21a and the connecting piece 21b. In this case, the facing pieces 21a, 21a
The base portion, that is, the portion connected to the connecting piece 21b may be curved so as to project outward. In addition, in FIG. 18, it is described as a simple U-shape. And these two pieces 21a,
A large number of slit-shaped long holes 21c are provided at a predetermined interval over 21b. The elongated hole 21c is formed by continuously connecting the connecting piece forming portion 21d across the width of the connecting piece 21b and the facing piece forming portion 21e existing at the base of the facing piece 21a, and as shown in FIG. In addition, it is formed so as to be orthogonal to a reference line parallel to the longitudinal direction. The inner blade 22 is also made of a thin metal plate and has a substantially U-shape with the facing pieces 22a, 22a and the connecting piece 22b. The method is smaller than the inner method of the facing pieces 21a, 21a. The inner blade 22 also has a long hole 22 that is substantially the same as the outer blade 21.
c is provided and is connected to the drive rod via a joint 26.

The slit blade 20 is assembled as follows. First, the receiving members 23, 23 and the joint 26 are locked to the inner blade 22, and these are inserted into the outer blade 21, and then the compression springs 25, 25 are provided between the receiving members 23, 23 and the mounting frames 24, 24. The mounting frames 24, 24 are locked to the outer blade 21 so as to be suspended by compression. This allows the inner blade 22
Is in a state in which it can slidably contact the inner surface of the outer blade 21.

[0007] 30 is a cassette frame, two net blades
10 and 10 are locked at regular intervals, and the slit blade 20 is locked in the middle of the net blades 10 and 10. Then, the cassette frame 30 is locked to the housing outside the drawing.

When shaving, the electric razor moves the blades 10 and 20 in a direction in which the blades 10 and 20 are juxtaposed with each other by bringing them into contact with the skin. As a result, the front net blade 10 shaves his beard, and the shaving beard that he could not shave here is raised by this net blade 10 stretching his skin and roughly shaving with the slit blade 20,
Further, the net blade 10 at the rear is used for deep shaving.

[0009]

The electric razor described above is capable of improving deep shaving performance and shortening the shaving time. However, since the slit blade is a long hole, as shown in FIG. The amount of bite into the long holes 21C (protruding amount T1) becomes large, which may cause skin irritation or, in extreme cases, bleeding.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an electric shaver capable of suppressing the amount of bite of the skin into the slit blade without inhibiting the introduction of whiskers into the slit blade. To provide.

[0011]

In order to solve the above problems, the electric shaver according to claim 1 has a substantially U-shaped cross section and is driven by an outer blade having a large number of small holes and a motor. And two inner blades that are slidably in contact with the inner blades and are arranged side by side at regular intervals. Two pieces each having an outer blade provided with a large number of slit-shaped elongated holes formed by connecting opposite pieces forming portion and a connecting piece forming portion on both pieces and an inner blade driven by a motor and slidingly contacting this. In an electric razor equipped with a slit blade arranged between the net blades of
The slot of the slit blade is formed so as to be non-orthogonal to a reference line parallel to the longitudinal direction.

In the electric shaver according to a second aspect of the present invention, the elongated hole of the slit blade according to the first aspect is formed such that the facing piece forming portion is orthogonal to a reference line parallel to the longitudinal direction. .

According to a third aspect of the electric shaver, the long holes of the slit blades according to the first or second aspect are non-orthogonal in the directions opposite to each other with respect to the reference line parallel to the longitudinal direction of the connecting piece forming portion. The left and right parts are inclined so that

An electric shaver according to a fourth aspect of the invention has an outer blade having a substantially U-shaped cross section, and an outer blade provided with a large number of small holes and an inner blade driven by a motor and slidingly contacting the outer blade. The two net blades, which are arranged side by side at regular intervals, and the facing piece and the connecting piece form a substantially U shape, and the facing piece forming portion and the connecting piece forming portion are formed on both pieces. A slit blade having an outer blade provided with a large number of slit-shaped elongated holes formed continuously and an inner blade driven by a motor and slidingly contacting the outer blade, the slit blade being disposed between two net blades. In the electric shaver provided with, the elongated hole of the slit blade, the width near the center of the connecting piece forming part is narrowed and wide toward the end, and the facing piece forming part of the connecting piece forming part. It is configured to have the same width as the endmost portion.

In the electric shaver according to a fifth aspect of the present invention, the elongated hole of the slit blade according to the fourth aspect is inclined so that the connecting piece forming portion is non-orthogonal to a reference line parallel to the longitudinal direction. It is configured.

Further, the electric shaver according to claim 6 is:
The facing piece of the slit blade according to any one of claims 1 to 5 is provided with a rail width extending member that functions as if the width dimension of the rail positioned between the long holes is increased. This structure is preferably applied to the structure according to claim 4 or 5.

[0017]

According to the structure of the first aspect, since the crosspiece forming the long hole of the slit blade is also inclined, the crosspiece supports the skin trying to bite into the long hole.

According to the structure of claim 2, in addition to the effect of claim 1, introduction of whiskers into the elongated hole can be performed more favorably.

According to the structure of claim 3, in addition to the effect of claim 1 or 2, when the moving direction is displaced from the direction in which the blades are arranged in parallel, the left and right parts inclined in different directions are formed in the elongated holes. Therefore, the crosspieces forming the long holes are also inclined in different directions, so that the skin trying to bite into the long holes can be surely supported.

According to the fourth aspect of the present invention, whiskers are well introduced into the long hole, and the crosspiece forming the long hole is substantially inclined. Supports the skin trying to bite.

According to the configuration of claim 5, the operation of claim 4 becomes more effective.

According to the structure of claim 6, when shaving a beard, the distance between the skin and the inner blade of the slit blade can be increased.

[0023]

EXAMPLES The present invention is characterized by the construction of the slit blade, and several examples will be described below. Therefore,
Members having the same basic functions as those described in the conventional example are designated by the same reference numerals as those in the conventional example drawings.

First, a first embodiment of the present invention will be described with reference to FIGS.
It will be described based on. 1 is a cross-sectional view of an essential part, FIG. 2 is an exploded perspective view of an essential part, FIG. 3 is an exploded perspective view showing the inner edge of a net blade, FIG. 4 is an exploded perspective view of a slit blade, and FIG. 6 and 6 are overall sectional views. This electric razor also has two net blades 10 and 10 and one slit blade 20 as main parts.

The net blade 10 includes an outer blade 11 and an inner blade 13 as an inner blade base.
It is composed of an inner blade block 12 arranged in 14 and a cassette 15.
The outer blade 11 is made of a thin metal plate and has a rectangular shape and is provided with a large number of small holes 11a, 11a, ... Introducing whiskers in a portion other than the peripheral edge thereof. Form a letter. Attachment holes 11b, 11b, ... And through holes 11c for attaching to the cassette 15 are provided on the peripheral edge.

As shown in FIG. 3, the inner blade block 12 comprises a large number of inner blades 13, 13, ... And an inner blade base 14 on which these are arranged. The inner blade 13 has a substantially U shape, and its peripheral edge serves as a cut portion, and is arranged on the inner blade base 14 at regular intervals. Inner blade
14 is locked to a drive rod described later via a compression spring so as to be movable in a direction of compressing the compression spring. As a result, the inner blade base 14 receives a spring force outward, and the inner blades 13,1
3, ... Slidably contact the inner surface of the outer blade 11.

As described above, the cassette 15 has the outer blade 11 attached thereto so that the cross section thereof has a substantially U-shape, and the inner blade block 12 is also attached.
So as to accommodate the opposite side walls 15a, 15a and the opposite U-shaped side wall 15
It has b and 15b and is made of plastic in a frame shape.
The opposed side walls 15a, 15a have slightly different shapes from each other, and when the two cassettes 15, 15 are arranged side by side, the side located outward is wide. On the outer surface of the wide opposing side wall 15a, the heat sealing protrusions 15c, 15c, ...
And engagement protrusion 15e (this is provided only on one cassette)
Are lined up. Further, heat sealing protrusions 15c, 15c, ... And a connecting boss 15d are continuously provided on the outer surface of the narrow side wall 15a.

The opposing U-shaped side walls 15b, 15b have slightly smaller U-shaped stepped portions 15f, 15f inward, and the float portions 15g,
15g are formed. The float portion 15g has a substantially E-shape having a vertical bending piece and a central piece, and the end portion of the vertical bending piece is connected to the opposing side wall 15a. The fitting projection is provided on the outer surface of the central piece. Has 15h.

In the outer blade 11 described above, the attachment holes 11b, 11b, ... And the through hole 11c are provided with the heat sealing projections 15c, 15c ,.
It is attached to the cassette 15 by fitting it into d and heating and deforming the heat-sealing projections 15c, 15c, .... As a result, the outer blade 11 has a substantially U-shaped cross section, the outer contour of the U-shape is located slightly inward of the opposing U-shaped side walls 15b, 15b, and the inner contour of the U-shape is It will be located outside the U-shaped steps 15f, 15f.

The slit blade 20 comprises an outer blade 21, an inner blade 22, a receiving member 23, mounting frames 24, 24, compression springs 25, 25, and a joint 26. The outer blade 21 is made of a thin metal plate and is formed into a substantially U shape by the facing pieces 21a, 21a and the connecting piece 21b. In this case, the facing pieces 21a, 21a
The base portion, that is, the portion connected to the connecting piece 21b may be curved so as to project outward. It should be noted that FIG. 2 or FIG. 4 is described as a simple U-shape. A large number of slit-shaped long holes 21c for introducing a beard are provided at predetermined intervals over both the pieces 21a, 21b. The elongated hole 21c is formed on the base of the connecting piece forming part 21d and the facing piece forming part 21a across the width of the connecting piece 21b.
21e is formed continuously. This long hole 21c,
Particularly, the flat portion of the connecting piece 21b forming the connecting piece forming portion 21d becomes the crosspiece S.

What is important here is that the long holes 21c are formed so as to be non-orthogonal to a reference line parallel to the longitudinal direction. In this embodiment, the connecting piece forming part
21d is inclined by about 30 ° from the state of being orthogonal to the reference line parallel to the longitudinal direction, and the facing piece forming portion 21e is formed to be orthogonal to the reference line parallel to the longitudinal direction. Therefore, cross S
Will be similarly inclined. The facing piece forming portion 21e
May be inclined. The facing pieces 21a, 21a are long on the end side, and locking holes 21f, 21f, ... Are provided near the tips thereof.

The inner blade 22 is also made of a thin metal plate, and is a facing piece.
22a and 22a and the connecting piece 22b have a substantially U shape, but the outer method of the facing pieces 22a and 22a is smaller than the inner method of the facing pieces 21a and 21a so as to fit inside the outer blade 21. Further, even in the inner blade 22, a large number of slit-shaped long holes 22c for introducing a beard are provided at predetermined intervals over both the pieces 22a and 22b. The elongated hole 22c is also formed by continuously connecting the connecting piece forming portion 22d extending over the entire width of the connecting piece 22b and the facing piece forming portion 22e existing at the base of the facing piece 22a. The flat portion of the elongated hole 22c, particularly the connecting piece 22b forming the connecting piece forming portion 22d, becomes the crosspiece S, and the end face thereof becomes the cut portion. However, the elongated hole 22c is formed orthogonal to the reference line parallel to the longitudinal direction. Further, the facing pieces 22a, 22a have locking holes 22f, 22f, ... For locking the receiving member 23 and the mounting frames 24, 24.
Is provided.

The receiving member 23 has a projection 23a which can be locked in the locking hole 22f of the inner blade 22 and a spring receiving surface of the compression spring 25.
The mounting frames 24, 24 have horizontal pieces that project from the guide boss 24a of the compression spring 25 to serve as a spring receiving surface and a projection 24b that can be locked in the locking hole 21f of the outer blade 21, and will be described later. An L-shaped vertical piece provided with a locking recess 24c that can be locked in the cassette frame. The compression springs 25, 25 press the inner blade 22 against the inner surface of the outer blade, and have a coil shape. The joint 26 has a substantially U shape, and is a protrusion 26 that can be locked in the locking hole 22f of the inner blade 22.
It has a recess 26b protruding from a and engaging with a drive rod described later.

The slit blade 20 is assembled as follows. First, in the locking holes 22f, 22f, ... Of the inner blade 22, the receiving members 23, 2
Insert the protrusions 23a of 3 and the protrusions 26a of the joint 26 into the outer blade 21, and then insert the receiving members 23, 23 and the mounting frames 24, 2
The mounting frames 24, 24 are locked to the outer blade 21 so as to compress and suspend the compression springs 25, 25 between the lateral pieces of 4. As a result, the inner blade 22 is brought into a state capable of sliding contact with the inner surface of the outer blade 21.

30 is a cassette frame, two net blades
10, 10 (in this embodiment, the inner blade block 12 is adapted to be locked to the drive rod) at a fixed interval,
The slit blade 20 is locked in the middle of the net blades 10, 10. Therefore, the cassette frame 30 has side walls 30a, 30a along the longitudinal direction of the blades 10, 10, 20 and locking side walls 30b, 30b for locking the longitudinal ends of the blades 10, 10, 20. The frame is made of plastic. Both side walls 30a, 30a are curved inward as they go upward. The side walls 30a, 30a are also slightly different from each other in shape, and one of them is wide. The wide side wall 30a is provided with a recess 30c and through holes 30d, 30d, and the lower ends of the side walls 30a are provided with engagement recesses 30e, 30e, ...

The locking side walls 30b, 30b include a float portion 30f having a projection 30g for locking the slit blade 20 projecting in the vicinity of the center,
Fitting recesses 30h and 30h for locking the cassette 15 are provided on both sides thereof. Guide grooves 30j, 30j formed from the lower end are connected to the fitting recesses 30h, 30h. Float section mentioned above
30f has a substantially E shape having a vertically bending piece that can be bent in the vertical direction and a central piece, and the above-mentioned protrusion 30g is provided on the inner surface of the central piece. Further, from the upper end, L-shaped flexible hooks 30k, 30k are extended, and the locking holes 30m, 30m are also provided.
And locking projections 30n, 30n are provided.

Reference numeral 31 denotes a slide handle, which is a handle body 31a which is slidable in the longitudinal direction of the recess 30c of the cassette frame 30 and hooks 31b and 31b which penetrate the through holes 30d and 30d and enter the cassette frame. Become. 32 is a slide plate, which is a locking hole for locking the hooks 31b, 31b
32a and an engaging hole 32 for engaging the engaging protrusion 15e of the cassette 15
b is provided. The upper end surface of the engagement hole 32b is a cam. Therefore, the slide handle 31 and the slide plate 32 are integrated with each other with the side wall 30a interposed therebetween, and one cassette 15 that responds to the cam of the engagement hole 32b depending on the position of the slide handle 31, that is, one net blade 10 is It becomes as high or low as the net blade 10. Lowering one of the net blades 10 is suitable for shaving in narrow places such as under the nose.

33, 33 are buttons, which are button bodies 33 having a substantially triangular shape.
It consists of a and a locking projection 33b. These buttons 33, 33 are
33b is integrated with the hooks 30k, 30k by locking the locking holes 30m, 30m of the hooks 30k, 30k provided on the cassette frame 30.

The net blades 10 and 10 and the slit blade 20 are formed by locking the fitting projection 15h of the cassette 15 in the fitting recess 30h and the locking recess 24c of the mounting frames 24, 24 in the projection 30g. It is locked to the cassette frame 30.

Reference numeral 34 is an outer blade frame, which is a cassette frame 30.
It has a similar shape to the side walls 34a, 34a and the locking side wall.
It has 34b, 34b and is molded in a frame shape from plastic. However, compared to the cassette frame 30, the locking side walls 34b, 34
The distance between b is a little long. The side walls 34a, 34a are provided at their upper end surfaces with engagement protrusions 34c, 34c, ... Which engage with the engagement recesses 30e, 30e ,. Locking side walls 34b, 34
The b has a curved surface along the outer contour of the two net blades 10, 10 in a side view, and has U-shaped notches 34d, 34d near the center. On the inner surface, the locking protrusion 30n of the cassette frame 30
Is provided with a locking recess 34e for locking and a locking recess 34f for locking a locking piece of the housing described later.

The cassette frame 30 in which the net blades 10, 10 and the slit blade 20 are locked is locked in the outer blade frame 34 by locking the locking projections 30n, 30n in the locking recesses 34e.

The entire electric razor, as shown in FIG.
A motor 40 and other general electric razor parts are housed in a housing 40 with a switch handle 42 mounted on the outer surface.
It is assembled by locking the outer blade frame 34 that locks the cassette frame 30. The housing 40 is specifically configured by combining several types of plastic molded parts, but since it is not an essential part of the present invention, detailed description thereof will be omitted.

As shown in FIG. 3, the housing 40 has, at its upper end, a locking piece 40a which locks in the locking recess 34f of the outer blade frame 34, and is bent from the outside. It is equipped with a detachable button 40b so that you can do it. In addition, the upper end is a drive rod that operates the net blades 10 and 10 and the slit blade 20.
It supports 43 and 44 in a reciprocating manner.

The drive rods 43, 44 are connected to two conversion members for converting the rotational output of the motor 41 into a reciprocating motion, and in this embodiment, they reciprocate in opposite directions. Double drive rod 43,44
Holds the compression springs 45, 45 that lock the inner blade base 14 so that it can move in the axial direction of the drive rods 43, 44, and in that state bias the inner blade base 14 outward. Housing section 43a,
44a is recessed. The drive rod 44 on one side is continuously provided with an engaging portion 44b which engages with the recess 26b of the slit blade 20.

Therefore, the electric razor has the net blades 10,10.
Assembly is completed by locking the outer blade frame 34 that locks the net blades 10 and 10 and the slit blade 20 except the inner blade blocks 12 and 12 to the housing 40 that locks the inner blade blocks 12 and 12. .

In this electric razor, when the shaving is performed while moving the blades 10, 10 and 20 in the direction in which they are arranged side by side, as shown in FIG. 5, the crosspiece S which forms the long hole 21c of the slit blade 20 also moves. Since it is inclined with respect to the direction, this crosspiece S supports the skin trying to bite into the long hole 21c. Therefore, as shown in FIG. 7, the biting amount (protrusion amount T2) of the skin H into the long hole 21C can be made smaller than that of the conventional one.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on. This embodiment differs from the first embodiment only in the slit blade, especially in its outer blade, and therefore only that portion will be described.

The long hole 21c of the outer cutter 21 of this embodiment also has a connecting piece.
Connecting piece forming portion 21d and facing piece 21 across the entire width of 21b
The facing piece forming portion 21e existing at the base of a is continuously formed, and the flat portion of the connecting piece 21b forming the connecting piece forming portion 21d becomes the crosspiece S. However, the connecting piece forming portion 21d is bent at substantially the center and has a left portion 21r and a right portion 21s. That is, the left and right portions 21r and 21s are inclined so as to be non-orthogonal in the opposite directions with respect to the reference line parallel to the longitudinal direction. In this embodiment, the left and right portions 21r, 21s are formed so as to be inclined by about 30 ° in directions opposite to each other from a state orthogonal to a reference line parallel to the longitudinal direction. Therefore, the crosspiece S is also inclined. The facing piece forming portion 21e is not particularly limited.

In this embodiment, in addition to the operation similar to that of the first embodiment, the moving direction of the electric razor is such that the blades 10, 10, 20 are moved.
If there is a deviation from the side-by-side installation direction, the long hole 21c has left and right parts 21r and 21s that are inclined in different directions.
The crosspiece S forming the ridge is also inclined in different directions, and can reliably support the skin trying to bite into the long hole.

Next, a third embodiment of the present invention will be described with reference to FIGS. This embodiment also differs from the previous embodiment only in the slit blade, especially in its outer blade, so only that portion will be described.

The long hole 21c of the outer cutter 21 of this embodiment also has a connecting piece.
Connecting piece forming portion 21d and facing piece 21 across the entire width of 21b
The facing piece forming portion 21e existing at the base of a is continuously formed, and the flat portion of the connecting piece 21b forming the connecting piece forming portion 21d becomes the crosspiece S. However, the connecting piece forming portion 21d has a narrower width in the vicinity of its center and a wider width toward the end. The facing piece forming portion 21e is formed to have the same width as the outermost end of the connecting piece forming portion 21d. In this case, the substantial center line of the connecting piece forming portion 21d may be inclined or orthogonal to the reference line parallel to the longitudinal direction so as not to be orthogonal.

In this embodiment, whiskers are well introduced into the long hole 21c, and the crosspiece S forming the long hole 21c is substantially inclined. Supports the skin trying to bite into it.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. In this embodiment, a rail width extending member is attached to the slit blade of the third embodiment.

The beam width extending member (also called a comb) 51 is
A piece 21a facing the outer blade 21 made of plastic
Or the outer blade 21 is molded at the same time by molding. FIG.
Shows a state in which the beam width extending member 51 is separated from the outer blade 21. That is, the beam width extending member 51 includes an extending member base 51a slightly thicker than the outer blade 21 and slightly longer than the length of the outer blade 21 in the longitudinal direction, and a facing piece of the long hole 21c having a width corresponding to the end width of the beam S. It is composed of comb portions 51b, 51b, ... Having a height corresponding to the forming portion 21e, and extended portions 51c at the end portions. Then, the beam width extending member 51 is
The upper end surface of the comb portion 51b is attached to the outer blade 21 such that the upper end surface thereof is flush with the upper surface of the outer blade 21, that is, the upper surface of the crosspiece S. As a result, it functions as if the width dimension of the crosspiece S is increased.

Further, in the outer cutter 21 of this embodiment, of the third embodiment, the substantial center line of the connecting piece forming portion 21d of the elongated hole 21c is not orthogonal to the reference line parallel to the longitudinal direction. It is supposed to be inclined.

In this embodiment, when shaving, the distance between the skin and the inner blade 22 of the slit blade 20 can be increased. As a result, even if the skin bites due to the easier introduction of the beard, it is hard to hurt because of the distance from the inner blade 22, and when the skin approaches the inner blade 22 due to the movement of the electric razor, the long hole The width of 21c becomes smaller, that is, the crosspiece S supports the skin trying to bite. The outer blade 21 is not limited to this, but the combination of this embodiment is preferable from the viewpoint of introducing a beard.

FIG. 15 shows a modification of the fourth embodiment, in which every other comb portion 51b, 51b, ... In the previous embodiment is omitted, and the introduction of the beard is further improved.

Since the main part of the present invention is the structure of the outer blade of the slit blade, it goes without saying that the structure other than the main part outside the scope of the present invention can be appropriately changed.

[0059]

In the electric shaver according to the first aspect of the present invention, since the crosspiece forming the long hole of the slit blade is also inclined, the crosspiece supports the skin trying to bite into the long hole, whereby the slit blade of the skin. The amount of bite into it can be suppressed.

The electric shaver according to claim 2 is the same as that according to claim 1.
In addition to the above-described effects, the beard is introduced into the long hole more favorably.

The electric shaver according to claim 3 is the same as that according to claim 1.
Or, in addition to the function and effect described in 2, when the moving direction deviates from the direction in which the blades are arranged side by side, the long holes have left and right portions that are inclined in different directions, so the crosspieces forming the long holes are also inclined in different directions. As a result, it can reliably support the skin trying to bite into the long hole.

In the electric shaver according to the fourth aspect, whiskers are well introduced into the long holes, and the crosspieces forming the long holes are substantially inclined, and the crosspieces bite into the long holes. It supports the skin you are trying to dig into, which reduces the amount of digging into the slit blade.

The electric shaver according to claim 5 is the same as that according to claim 4.
The described effects will be more effective.

The electric shaver according to claim 6 is the same as that according to claim 1.
In addition to any one of the effects described in 1 to 5, when shaving, the distance between the skin and the inner blade of the slit blade can be increased, reducing the risk of damaging the skin even if it cuts into a certain amount or more. it can.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of a main part thereof.

FIG. 3 is an exploded perspective view showing the periphery of the inner blade of the net blade.

FIG. 4 is an exploded perspective view of the slit blade.

FIG. 5 is a partial plan view of the slit blade.

FIG. 6 is an overall sectional view thereof.

FIG. 7 is an explanatory diagram illustrating a skin biting state.

FIG. 8 is a perspective view of an essential part showing a second embodiment of the present invention.

FIG. 9 is a plan view of the relevant part.

FIG. 10 is a perspective view of a main part showing a third embodiment of the present invention.

FIG. 11 is a plan view of the relevant part.

FIG. 12 is a cross-sectional view of essential parts showing a fourth embodiment of the present invention.

FIG. 13 is an exploded perspective view of the relevant part.

FIG. 14 is a plan view of the relevant part.

FIG. 15 is a main-portion plan view showing a modification thereof.

FIG. 16 is a cross-sectional view of a main part of a conventional example.

FIG. 17 is a side view of the slit blade.

FIG. 18 is an exploded perspective view of the slit blade.

FIG. 19 is a plan view of the slit blade.

FIG. 20 is an explanatory diagram for explaining a skin biting state of a conventional example.

[Explanation of symbols]

 10 Net blade 11 Net blade outer blade 12 Net blade inner blade block 13 Inner blade block inner blade 14 Inner blade block inner blade base 15 Net blade cassette 20 Slit blade 21 Slit blade outer blade 21a Outer blade facing Piece 21b Outer blade connecting piece 21c Outer blade long hole 21d Long hole connecting piece forming portion 21e Long hole facing piece forming portion S Outer blade crosspiece 22 Slit blade inner blade 23 Slit blade receiving member 24 Slit blade receiving member Mounting frame 25 Slit blade compression spring 26 Slit blade joint 30 Cassette frame 34 Outer blade frame 40 Housing 43,44 Drive rod

Claims (6)

[Claims] 1. An outer blade having a substantially U-shaped cross section and having a large number of small holes and an inner blade driven by a motor and slidingly contacting the outer blade, which are arranged at a constant interval. And two net blades arranged side by side, and a facing piece and a connecting piece that form a substantially U-shape, and a slit shape formed by continuously forming the facing piece forming part and the connecting piece forming part on both pieces. A slit blade having an outer blade provided with a large number of elongated holes and an inner blade driven by a motor to come into sliding contact with the slit blade, the slit blade being disposed between two net blades;
In the electric shaver, the long hole of the slit blade is formed so as to be non-orthogonal to a reference line parallel to the longitudinal direction of the electric shaver. 2. The electric shaver according to claim 1, wherein the long hole of the slit blade is formed by forming the facing piece forming portion so as to be orthogonal to a reference line parallel to the longitudinal direction thereof. 3. The elongated hole of the slit blade has left and right portions that are inclined so that the connecting piece forming portion is non-orthogonal in directions opposite to each other with respect to a reference line parallel to the longitudinal direction.
Or the electric razor described in 2. 4. An outer blade having a large number of small holes and an inner blade which is driven by a motor and comes into sliding contact with the motor, and has a constant interval. And two net blades arranged side by side, and a facing piece and a connecting piece that form a substantially U-shape, and a slit shape formed by continuously forming the facing piece forming part and the connecting piece forming part on both pieces. A slit blade having an outer blade provided with a large number of elongated holes and an inner blade driven by a motor to come into sliding contact with the slit blade, the slit blade being disposed between two net blades;
In the electric shaver provided with, the slit blade long hole, the width near the center of the connecting piece forming portion is narrow and wide toward the end, and the facing piece forming portion is the end of the connecting piece forming portion. An electric razor characterized by being formed with the same width as the portion. 5. The electric shaver according to claim 4, wherein the elongated hole of the slit blade is formed by inclining the connecting piece forming portion so as to be non-perpendicular to a reference line parallel to the longitudinal direction. 6. The electric shaver according to any one of claims 1 to 5, wherein a piece width extending member that functions as if the width dimension of the piece of the rib located between the elongated holes is increased is attached to the facing piece of the slit blade. And an electric razor.