JPH105459A - Electric razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric razor in which shaving can be speedily finished with less generation of unshaved site. SOLUTION: Close to a main blade 1 comprising an outer blade provided with a number of blade holes and an inner blade to slide in contact with an inner surface of the outer blade, a trimmer blade 2 of which tip is directed in such a direction as to get apart from a main blade is disposed, so the trimmer blade 2 and the main blade 1 can be set to simultaneously get in contact with skin. A hair raising member 8 is protruded on a blade cover 24 covering an upper surface of a blade member in the trimmer blade 2. In moving this electric razor along skin, the hair raising member 8 on the blade cover 24 raises hair, so hair introducing efficiency into the main blade 1 is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric razor, and more particularly to an electric razor in which a trimmer blade for rough shaving and a main blade for finishing shaving are simultaneously in contact with the skin.

[0002]

2. Description of the Related Art In an electric razor in which a trimmer blade for rough shaving and a main blade for finishing shaving are simultaneously in contact with the skin, a long hair is cut by a trimmer blade and a hair shortened by the trimmer blade. Can be simultaneously shortened by the main blade, so that the body hair including the beard can be quickly shaved.

[0003] However, when the trimmer blade and the main blade can be brought into contact with the skin at the same time, a blade cover is usually located at the upper end of the trimmer blade whose blade edge faces away from the main blade. The blade cover is also located between the blade tip of the trimmer blade that is in contact with the skin and the main blade that is in contact with the skin, also in contact with the skin. This blade cover
When moving an electric razor along the skin, the hair is often laid down, which reduces the efficiency of hair introduction into the main blade.

[0004] For this purpose, Japanese Unexamined Patent Publication (Kokai) No. 7-144074 discloses a trimmer blade having a trimmer blade having a blade cover provided on an upper surface of a trimmer blade cover located between the trimmer blade and the main blade. A large number of grooves are provided that run in the direction connecting the blade and the main blade, and the occurrence of a situation in which the hair is laid down by allowing the hair to pass through the groove is suppressed.

[0005]

In the case where the blade cover is provided with the above-mentioned groove, the amount of hair that would fall asleep by the blade cover is reduced, and the hair that can be introduced into the main blade is accordingly reduced. Grooves in the blade cover only increase the passage of the hair, but do not allow sleeping hair to wake up. For this reason, it was impossible to reduce the unshaved residue.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric shaver which can hardly be left unshaved and can be finished quickly.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a method for moving a cutting edge close to a main blade comprising an outer blade having a large number of blade holes and an inner blade slidingly in contact with the inner surface of the outer blade. In an electric razor in which a trimmer blade is arranged so that the trimmer blade and the main blade can be brought into contact with the skin at the same time, a hair raising member is placed on the blade cover covering the upper surface of the blade member in the trimmer blade. It is characterized by being protruded. According to the present invention, when the electric shaver is moved along the skin, the hair raising member on the blade cover raises the hair, thereby increasing the efficiency of introducing the hair to the main blade.

[0008] The hair raising member is preferably made of an elastomer and fixed to a blade cover made of a molded product. In this case, it is preferable that the blade cover and the hair raising member are fitted in the thickness direction. . It is preferable that the upper end of the raising member is positioned at a height within a range of ± 2 mm with respect to the top of the main blade, and the raising member is preferably formed of a plurality of thin ribs. It is also preferable that the trimmer blade provided with an elastic hair raising member on the blade cover is floatable.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated electric razor in which a blade head 1 and a pair of trimmer blade type blade heads 2 and 2 located on both sides of the blade head 1 are arranged in parallel at the upper end of a main body 5, These three blade heads 2, 1 and 2 are driven simultaneously by a motor 4. In FIG. 2, 8 is a switch unit, and 9 is a charger.

Among the blade heads 1 and 2, the blade head 1, which is a main blade, is formed of a thin metal plate and has a large number of blade holes, and the outer blade 10 is heat-sealed. Holding the inner cassette 11 in a rectangular frame shape
And an inner blade 12 slidingly contacting the inner surface of the outer blade 10. The inner cassette 11 has elastic pieces 13 on both end surfaces as shown in FIG.

The blade head 1 is mounted on the main body 5 via the outer cassette 3. As shown in FIG. 5, the outer cassette 3 is formed in a rectangular frame shape by molding a synthetic resin.
0, a guide groove 31 is provided on both sides, and a guide groove 32 and a spring receiver 33 are provided on the inner surface in the width direction.
The inner cassette 1 having the outer blade 10 of the blade head 1
1 is accommodated in the outer cassette 3 from the lower opening of the outer cassette 3 and is prevented from falling off by the elastic piece 13 being located above the receiving piece 30 and is within a small vertical range with respect to the outer cassette 3. It becomes movable with. The protrusion 15 provided on the inner cassette 11 is used for putting a finger when removing the inner cassette 11 from the outer cassette 3.

The two blade heads 2 of the trimmer blade type include:
As shown in FIG. 6, a trimmer base 20 and a fixed blade 21 fixed to the upper surface of the trimmer base 20 by fitting with the fitting protrusion 201, respectively, are arranged on the upper surface side of the fixed blade 21 and fitted together. A movable blade 22 slidably guided by the projection 201; a pressing spring 23 connected to the trimmer base 20 to press the movable blade 22 toward the fixed blade 21 by a spring piece 231; and a top surface of the pressing spring 23. A blade cover 24 connected to the trimmer base 20, a trimmer driver 25 having an upper end engaged with the movable blade 22, a skin contact guide 26 mounted on the trimmer base 20, and a float spring 27. The center of the trimmer driver 25 in the vertical direction is supported by a shaft 205 provided on the trimmer base 20. In the figure, reference numeral 206 denotes a hook for preventing the trimmer driver 25 from being disengaged by engaging with the trimmer driver 25;
Reference numeral 7 denotes a pin that is inserted into the coupling hole 240 of the blade cover 24 and fixes the blade cover 24.

When the skin contact guide 26 is mounted on the trimmer base 20, the projection 2 protrudes from the lower end thereof.
62 is placed on the upper surface of the elastic push-up piece 202 provided on the trimmer base 20, and hooks 261 projecting from both sides are provided on the lower surface of the upper wall of the engaging recess 203 provided on the side surface of the trimmer base 20. Contact with the trimmer base 20
Integrated into

The two blade heads 2, 2 are also disposed in the outer cassette 3. At this time, the engagement between the trimmer base 20 and the guide groove 32 and the contact of the skin
The engagement between the hook 261 of 60 and the guide groove 31 enables the outer cassette 3 to slide freely in a small vertical range. The blade head 2 is urged upward by a float spring 27 disposed between the lower surface of the skin contact guide 26 and the spring receiver 33 of the outer cassette 3.

The inner blade 12 of the blade head 1 is reciprocally driven by being connected to a reciprocating drive element 50 via a joint 51 as shown in FIG.
The upper blade 3 urges the upper blade 3 into contact with the inner surface of the outer blade 10.
The blade head 1 can also float freely by the spring force of the push-up spring 53. Since the joint 51 also has an engaging portion with the lower end of the trimmer driver 25 of each blade head 2, when the inner blade 12 of the blade head 1 is driven to reciprocate, via the trimmer driver 25. The movable blade 22 of the blade head 2 is also driven back and forth.

The blade head 2 is mounted on the float spring 27.
When the blade head 2 is pressed against the skin, the blade head 2 sinks against the float spring 27 as shown in FIG. 9, but from the inner cassette 11 of the blade head 1. Since the protruding projection 14 shown in FIG. 5 is located in the downwardly opened engagement groove 208 provided on the trimmer base 20 of the blade head 2, the blade head 2 is in the middle of the sinking operation. The blade head 1 also sinks in conjunction with it.

Further, as described above, in the skin contact guide 26, the protruding piece 262 rests on the upper surface of the push-up piece 202 of the trimmer base 20, and the hook 261 is mounted on the lower surface of the upper wall of the engaging recess 203 of the trimmer base 20. Because it is in contact with the trimmer base 20, it is integrated with the trimmer base 20, and when the skin contact guide 26 moves up and down, the trimmer base 20 also moves up and down at the same time, and furthermore, the trimmer base 20 moves up and down. Is performed, the skin contact guide 26 also moves up and down. That is, the skin contact guide 26 and the trimmer base 20 receive the spring force of the float spring 27 and float at the same time.

The thus formed trimmer blade type blade head 2 has a plurality of elastomer resin ribs 80 on the upper surface of the blade cover 24 and on the blade head 1 side.
The hair raising member 8 having elasticity is attached. As shown in FIG. 9, the razor 8 in which the ribs 80 are arranged in parallel with the blade edge of the blade head 2 and the longitudinal direction of the blade head 1 has an upper end substantially equal to the height H of the upper end of the blade head 1. Where the blade heads 1, 2
Is pressed against the skin S, the hair raising member 8 also comes into contact with the skin S.

Trimmer blade-type blade head 2 for rough shaving
When the electric razor is moved so as to cut the hair with the blade head 1 which is the main blade for finishing shaving after cutting the hair with the hair, the skin S of the part where the hair is cut with the blade edge of the blade head 2 is raised. After contacting the member 8, it comes into contact with the blade head 1. At this time, the elastic hair raising member 8 composed of the plurality of ribs 80 raises the hair by being hooked on the hair, Make hair grow by stretching the skin between. Even if the hair is sleeping, the hair raising member 8 is raised immediately before the blade head 1 portion comes into contact with the hair. The angle at which the hairs are caught and cut by the head 1 and which are caught are the angles at which the hairs are most easily introduced into the outer blade 10 of the blade head 1. This is greatly improved by the presence of the hair raising member 8.

In particular, in the illustrated example, since the contact portion of the hair raising member 8 with the skin S is constituted by a plurality of thin and flexible ribs 80, the skin S is pressed when pressed against the skin S.
Despite the unevenness, the hair raising member 8 is to surely contact the skin S over the entire length in the longitudinal direction, and the blade head 2 provided with the hair raising member 8 may float freely. In this way, the hair raising member 8 is surely brought into contact with the skin S with an appropriate force to raise hair.

The hair raising member 8 is attached to the blade cover 24 by heat welding. At this time, if the base of the hair raising member 8 is fitted into the blade cover 24, the hair raising member 8 is It is preferable because it is difficult to come off the cover 24. Further, the upper end of the raising member 8 is set to be substantially the same height as the top position H of the blade head 1 which is the main blade, but this is because the upper end position of the raising member 8 is higher than the top position H of the blade head 1. If the height is too high, the contact pressure between the blade head 1 and the skin S cannot be sufficiently secured by the hair raising member 8, and accordingly, the hair cannot be shortly shaved. If the upper end position of the hair raising member 8 is too lower than the top position H, the hair raising effect of the hair raising member 8 will not be sufficiently obtained, and the hair raising member 8 will be within 2 mm above and below the H position. It is preferable to determine the upper end position of. FIG. 10 shows how the shortness B of the cut hair and the skin contact A change depending on the height position of the hair raising member 8.

Further, when the hair raising member 8 is constituted by the ribs 80, it is examined how the number of the ribs 80 affects the shortness b of the cut hair and the skin contact a.
As shown in FIG. If the number of the ribs 80 is two or more, good results can be obtained. By the way, even when the skin contact guide 26 is pressed against soft skin such as an armpit, the skin does not enter the movable blade 22 or the fixed blade 21 of the trimmer blade type blade head 2 and is not damaged. It is described that the blade head 2 and the skin contact guide 26 are integrated, but one blade head 2 operates the slide button 7 disposed on the outer surface of the outer cassette 3. Thereby, the skin contact guide 26 and the trimmer base 20 are separated, and only the member on the trimmer base 20 side can be moved upward.

To explain this point, the slide button 7
Are two pairs of hooks 71 protruding rearward as shown in FIG.
The hook 71, 72 and the lock button 70 are provided on the outer cassette 3 and have a total of five vertically long slots 35, 36, 37 and is slidably mounted on the outer surface of the outer cassette 3 so as to be vertically slidable. And lock button 70
Is held between the slide button 7 and the outer cassette 3 and is prevented from rotating by fitting with the non-circular recess 73 on the back of the slide button 7, and the tip is provided on the trimmer base 20. To the elastic piece 204 provided.

When the slide button 7 is in the lower position, the portion of the lock button 70 located inside the outer cassette 3 is located below the projections 38 provided on both sides of the elongated hole 35 on the inner surface of the outer cassette 3. Therefore, even if the slide button 7 is moved upward, the lock button 70 and the projection 3
8 to be hindered. In this state, the hooks 71 and 72 of the slide button 7 do not prevent the blade head 2 from moving up and down. Therefore, the blade head 2 including the skin contact guide 3 can float freely.

However, when the lock button 70 is pushed, the engagement between the projection 38 of the outer cassette 3 and the lock button 70 is released, so that the slide button 7 can be moved upward. Further, the pressed lock button 70 pushes the elastic piece 204 backward, and the elastic piece 204 is placed immediately above the hook 72 of the slide button 7.
When the slide button 7 is moved upward to position the engagement projection 209 in, the trimmer base 20 is also pushed and moves upward.

When the trimmer base 20 moves upward as described above, the push-up piece 202 rides on the release protrusion 39 provided on the inner surface of the outer cassette 3 shown in FIG. The push-up piece 202 comes off from the protruding piece 262 of the skin contact guide 26 placed on the
Guide 26 for the upward movement of trimmer base 20
Does not follow, the members of the blade head 2 except the skin contact guide 26 move upward in conjunction with the slide button 7. In this state, the trimmer driver 25 is still connected to the joint 51.
And the reciprocating motion from the driver 50 can be transmitted to the movable blade 22.

When the finger is released from the slide button 7 at the upper end position of the slide range, the lock button 70 is returned by being urged by the elastic piece 204, and is returned above the projection 38.
Since 0 is located, the slide button 7 cannot be moved downward. To return the blade head 2 to the original state, the slide button 7 may be lowered while pressing the lock button 70 again. If the slide button 7 is moved downward in a state where the lock button 70 is disengaged from the projection 38, the hook 71 of the slide button 7 pushes the base portion of the push-up piece 202 downward, and the trimmer base 20 is moved. Move down. When the trimmer base 20 is lowered, the push-up piece 202 rides on the release projection 39 on the inner surface of the outer cassette 3 and bends backward, so that the distal end of the skin contact guide 26 rides over the protrusion 262 and the protrusion 262. And the skin contact guide 26 and the trimmer base 20 are integrated again.

FIGS. 12 and 13 show a trimmer blade type blade head 2 provided only on one side of a blade head 1 which is a main blade.

[0029]

As described above, according to the present invention, the upper surface of the blade member of the trimmer blade is covered by the electric shaver in which the rough shaving by the trimmer blade and the finish shaving by the main blade can be performed simultaneously. Because the hair raising member protrudes on the blade cover, when moving the hair along the skin to introduce the hair to the main blade after rough shaving, it is on the blade cover of the trimmer blade and The hair-raising member located between the main blade not only prevents the blade cover from contacting the skin and causing the hair to lie down, but also actively wakes the sleeping hair. In addition, the efficiency of introducing hairs into the main blade is high, so that shaving is less likely to occur and finishing can be performed quickly.

If the hair raising member is made of an elastomer and is fixed to the blade cover made of a molded product, the manufacture can be performed by molding the blade cover and the hair raising member. At this time, if the blade cover and the hair raising member are fitted in the thickness direction,
The bonding strength between the two is high and the hair raising member is less likely to be peeled off.

When the upper end of the hair raising member is positioned within a range of ± 2 mm with respect to the top of the main blade, a favorable result can be obtained in that the point of contact with the skin and the hair can be shaved short. If the hair raising member is formed of a plurality of thin ribs, a favorable result can be obtained in that the point of contact with the skin and the hair can be shaved similarly. If the trimmer blade provided on the blade cover is provided with an elastic hair raising member, the hair raising effect of the hair raising member can be ensured regardless of the unevenness of the skin.

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional view of an example of an embodiment of the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a cross-sectional view of the same staircase.

FIG. 5 is an exploded perspective view of the blade head, the outer cassette, and the slide button in the same.

FIG. 6 is an exploded perspective view of the same trimmer blade.

FIG. 7 is a perspective view of the blade cover and the hair raising member according to the first embodiment.

FIG. 8 is an exploded perspective view of the outer cassette and a slide button of the above.

FIG. 9 is a partial vertical sectional view showing a state of the above float.

FIG. 10 is an explanatory diagram showing a characteristic change according to the height of the hair raising member.

FIG. 11 is an explanatory diagram showing a characteristic change according to the number of ribs of the hair raising member according to the first embodiment.

FIG. 12 is a partial longitudinal sectional view of another example of the above.

FIG. 13 is a plan view of the same.

[Explanation of symbols]

 Reference Signs List 1 blade head (main blade) 2 blade head (trimmer blade) 8 skin stretching member 24 blade cover

Claims (6)

[Claims] 1. A trimmer having a trimmer blade having a cutting edge directed in a direction away from the main blade near a main blade including an outer blade having a number of blade holes and an inner blade slidingly contacting the inner surface of the outer blade. An electric razor in which the blade and the main blade can be brought into contact with the skin at the same time, characterized in that a hair raising member is protrudingly provided on a blade cover covering an upper surface of the blade member in the trimmer blade. Electric razor. 2. The electric shaver according to claim 1, wherein the hair raising member is made of an elastomer and is fixed to a blade cover made of a molded product. 3. The electric shaver according to claim 2, wherein the blade cover and the hair raising member are fitted in the thickness direction. 4. The method according to claim 1, wherein an upper end of the raising member is positioned at a height within a range of ± 2 mm with respect to a top of the main blade. Electric razor. 5. The hair raising member according to claim 1, wherein the hair raising member is formed of a plurality of thin ribs.
Electric razor as described. 6. The electric shaver according to claim 1, wherein the trimmer blade provided with an elastic hair raising member on the blade cover is free to float.