WO2011118694A1

WO2011118694A1 - Electric shaver

Info

Publication number: WO2011118694A1
Application number: PCT/JP2011/057144
Authority: WO
Inventors: 清水　宏明; 小林　昇; 小森　俊介; 利夫生田; 岩崎　重左エ門
Original assignee: パナソニック電工株式会社
Priority date: 2010-03-26
Filing date: 2011-03-24
Publication date: 2011-09-29
Also published as: EP2554339B2; EP2554339A4; JP5421834B2; EP2554339A1; JP2011200489A; EP2554339B1

Abstract

The hair raising force of a second hair raising section (33c) provided on the rear side in the advance direction is set to be greater than the hair raising force of a first hair raising section (33c) provided on the front side in the advance direction. As a result, during the use of the electric shaver (1), the difference between the hair raising forces of the first hair raising section (33c) and the second hair raising section (33c) is reduced to enable body hairs to be more efficiently raised.

Description

Electric razor

The present invention relates to an electric razor.

Conventionally, various electric razors for shaving body hair have been developed. Here, the angle formed by the direction in which the body hair extends and the skin surface is called the raised angle, but the raised angle is large (for example, 45 ° to 60 °), but body hair is easy to shave, but the raised angle is small ( For example, body hair, that is, sleeping hair, is difficult to shave. In view of this, an electric razor has been developed in which a raised portion that raises the sleeping hair is larger than the conventional one on the outer blade (see, for example, Patent Document 1).

Japanese Patent No. 3083548

By the way, in the above-mentioned conventional technology, the raised blades of the outer blade having the raised portions are arranged uniformly, but the outer blade is usually formed in an arc shape protruding to the skin surface side.

For this reason, when using an electric razor, the skin contact surface on the front side in the direction of travel and the skin contact surface on the back side in the direction of travel differ from each other at the apex of the outer blade. There is a possibility that the second raised portion provided on the first brushed portion becomes smaller than the raised force of the first raised portion provided on the front side.

Therefore, the present invention reduces the difference in the raising force between the first raised portion provided on the front side in the traveling direction and the second raised portion provided on the rear side with the apex of the outer blade as a boundary, and more efficiently. The purpose is to obtain an electric razor that can cause hair.

In the present invention, the razor body, an outer blade having a blade hole defined by a crosspiece, and an inner blade disposed on the inner side of the outer blade and moving relative to the outer blade, the blade An inner blade that cuts the body hair inserted into the hole, and a raised portion that is provided on the crosspiece of the outer blade and abuts against the skin surface when moving on the skin surface, and raises the hair against the skin surface. The outer blade is formed in an arc shape protruding toward the skin surface side, and is an electric razor provided to be exposed at an end portion of the razor body, wherein the raised portion is a vertex of the outer blade A first raised portion provided on the front side in the traveling direction of the razor body and a second raised portion provided on the rear side in the traveling direction, with the raising force of the second raised portion being The raising force of the first raising part is larger than that of the first raising part.

According to the present invention, the raising force of the second raised portion is larger than the raised force of the first raised portion, so that when using an electric razor, the rear skin contact surface with a low contact pressure with the skin surface The 2nd raising part provided in can be made to contact a skin surface easily. As a result, the difference in the raising force between the first raising portion and the second raising portion can be alleviated, and body hair can be caused more efficiently.

It is the front view which showed the electric shaver concerning one Embodiment of this invention. It is the perspective view which showed the inner blade of the blade part shown in FIG. It is the perspective view which showed the head part of FIG. It is explanatory drawing of the outer blade of FIG. It is the perspective view which expanded a part of outer blade of FIG. FIG. 6 is a cross-sectional view taken along line AA in FIG. 5. FIG. 6 is a cross-sectional view taken along the line BB in FIG. 5. (A) is CC sectional drawing of FIG. 5, (b) is an expanded sectional view of a raising part. It is the perspective view which expanded the longitudinal direction crosspiece of FIG. FIG. 10 is a DD sectional view of FIG. 9. It is explanatory drawing which shows the condition where the outer blade of FIG. 3 contacted the skin surface.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 11 are views showing an electric shaver according to an embodiment of the present invention.

As shown in FIG. 1, the electric razor 1 of the present embodiment is mainly composed of a razor body 3, a blade part 4 provided at the tip of the razor body 3, and a drive part (not shown) that operates the blade part 4. It is configured.

In the present embodiment, the razor body 3 is divided into a grip portion 7 held by a user and a head portion 5 connected to the upper end portion of the grip portion 7, and the blade portion 4 for treating body hair is the head portion. The grip portion 7 is provided with a pressing switch 9 that causes the blade portion 4 to be operated by the driving portion (turns the power on and off) on the portion 5.

As shown in FIGS. 2 and 3, the blade portion 4 is disposed on the outer blade 11 exposed at the end of the razor body 3 and on the inner side of the outer blade 11 (below the outer blade 11). And an inner blade 13 that reciprocates in the longitudinal direction 23.

And in the outer blade 11 of this embodiment, it consists of the 1st net blade 17, the 2nd net blade 19, and the 3rd net blade 21, and the advancing direction (shaving direction) of the electric shaver 1 Are arranged in parallel along the short direction 25. Specifically, the first to

third net blades

17, 19, and 21 extend along a longitudinal direction 23 orthogonal to the lateral direction 25, and both ends (one end side) of the lateral direction 25. The first net blade 17 and the second net blade 19 are arranged on the other end side, and the third net blade 21 is arranged between the first net blade 17 and the second net blade 19. Has been.

As shown in FIG. 4, the first to

third net blades

17, 19, 21 constituting the outer blade 11 are formed in an arc shape protruding toward the user's skin side (upward in the present embodiment). The In the present embodiment, the cross sections along the short direction 25 of the first to

third net blades

17, 19, 21 are formed in an inverted U shape having a top portion 27 and both

side portions

29, 29, respectively. The inner blade 13 is formed in a shape along the inner shape of the

net blades

17, 19, 21.

As shown in FIG. 5, the outer blade 11 has innumerable blade holes 36, and the inner blade 13 moves relative to the outer blade 11 (longitudinal length) with respect to the body hair taken from these blade holes 36. By reciprocating in the direction 23), the inner blade 13 and the outer blade 11 cooperate to cut the hair.

The blade hole 36 is formed by partitioning the periphery with a crosspiece 32. That is, the crosspiece 32 of the outer cutter 11 includes a horizontal crosspiece 35 extending in an inverted U shape in the direction along the short direction 25 and a vertical crosspiece 30 extending in the direction along the longitudinal direction 23. A blade hole 36 is defined by the horizontal beam 35 and the vertical beam 30. The blade hole 36 is formed in a size that allows insertion of body hair. In the figure, the alternate long and short dash line Y is a center line (vertex) passing through the center of the apex 27 in the short direction 25.

Here, the vertical beam 30 of the present embodiment includes a first beam 31 having a cross-sectional shape shown in FIG. 6, a second beam 34 having a cross-sectional shape shown in FIG. 7, and a cross-sectional shape shown in FIG. And napping bar 33.

As shown in FIG. 6, the first crosspiece 31 is formed on the skin side (upper side of FIG. 6) and has a substantially flat surface (skin contact surface) 31 a with which the skin contacts, and the inner blade 13 side (FIG. 6). A bottom surface 31b formed flat on the lower side) and both

side surfaces

31c, 31c smoothly connecting the short sides of the surface (skin contact surface) 31a and the bottom surface 31b. Yes. In addition, at both ends in the short direction of the bottom 31d of the first crosspiece 31, a sliding contact portion 31e that protrudes toward the inner blade 13 and comes into sliding contact with the inner blade 13 is formed. The sliding contact portion 31e and the inner blade The body hair is cut at 13. And in this embodiment, the transversal direction end 31g of the upper part 31f of the 1st crosspiece 31 is formed in the cross-sectional semicircle shape of the curvature radius R1. This R1 is preferably 10 μm, for example. The surface 37 of the horizontal bar 35 is closer to the skin side than the surface 31a of the first bar 31. The vertical distance between the surface 31a of the first bar 31 and the horizontal bar 35 is set to L1.

On the other hand, as shown in FIG. 7, the second crosspiece 34 has substantially the same outer shape as the first crosspiece 31, and has a substantially flat surface (skin contact surface) 34 a and a bottom surface 34 b, and short portions thereof. The

side surfaces

34c, 34c smoothly connecting the hand directions are formed in a substantially bowl-shaped cross section. The surface 34a of the second crosspiece 34 is closer to the skin side than the surface 31a of the first crosspiece 31, and the vertical distance between the surface 34a of the second crosspiece 34 and the surface 37 of the horizontal crosspiece 35 is L3. Is set to

The raised bar 33 is formed in a substantially V-shaped cross section as shown in FIG. Specifically, a substantially flat plate portion 33a is formed at the central portion in the short direction, and both ends of the flat plate portion 33a in the short direction are directed from the flat plate portion 33a toward both ends in the short direction. Accordingly, an inclined portion 33b that is inclined so as to be positioned upward is provided. The inclined portion 33b is formed in a tapered shape that becomes narrower from the flat plate portion 33a side toward both ends in the short-side direction, and the raised portion that raises the body hair 71 at the short-side end 33l of the inclined portion 33b. A portion 33c is formed. The raised portion 33c has a raising action for more efficiently raising body hair (sleeping hair) having a small angle with the skin surface. As described above, in the present embodiment, the raised bar 33 mainly has a raised portion 33c (right side in FIG. 8) that exhibits a raised action when moved in one direction of shaving (from left to right in FIG. 3). And the raising part 33c (left side of FIG. 8) which exhibits a raising action when it moves to the other direction (right to left of FIG. 3) mainly in the shaving direction is provided.

Further, the raised bar 33 is defined by an upper flat surface 33d of the flat plate portion 33a, an upper inclined surface 33e of the inclined portion 33b, a bottom surface 33 of the flat plate portion 33a, and a lower inclined surface 33g of the inclined portion 33b. The vertical distance between the short-side end 33l of the raised portion 33c and the surface 37 of the horizontal rail 35 is set to L2, and is offset with a magnitude relationship of L2 ≦ L3 <L1.

Further, as shown in FIG. 8B, the short-side end 33l of the inclined portion 33b is formed in a semicircular cross section having a radius of curvature R2, and is set to have a magnitude relationship of R2 <R1 = R3. . R2 is preferably 3 μm, for example. Here, the clearance angle α formed by the reference line 57 in the short direction indicated by the two-dot chain line and the upper inclined surface 33e is the clearance angle α formed by the surface 31a of the first crosspiece 31 and the reference line 57 in the short direction ( 0 °) and the clearance angle (0 °) formed by the surface 34a of the second crosspiece 34 and the reference line 57 in the short direction.

Further, as shown in FIGS. 8 and 9, the longitudinal end portion 33j of the raised rail 33 extends in a substantially straight section from the side wall surface 59 of the horizontal rail 35 in the longitudinal direction, and the longitudinal end portion 33j The central portion 33k in the longitudinal direction is connected with a gentle curve through a boundary portion 33m. The radius of curvature of the boundary portion 33m is preferably 10 μm, for example.

As described above, the vertical rail 30 of the present embodiment includes the raised rail 33 provided with the raised portion 33c having a higher raising force than the first and

second rails

31 and 34, and the surface 31a of the raised portion 33c. The first bar 31 provided so as to be positioned on the inner blade 13 side from the short-side end 33l and the surface 34a were provided so as to be positioned on the skin side of the surface 31a of the first bar 31. A second crosspiece 34.

Here, in the present embodiment, the raising force of the raising portion (second raising portion) 33c provided on the rear side in the traveling direction with the vertex Y of the outer blade 11 as a boundary is set to the raising portion (first first portion) provided on the front side. It is larger than the raising force of the raising part) 33c.

Specifically, as shown in FIGS. 5 and 11, in the present embodiment, on the vertex Y of the outer blade 11 as a boundary, one end side (right side in FIG. 11) and the other end side (left side in FIG. 11) A pair of raised

bars

33A and 33B (the above-mentioned raised bars 33) having the same shape are arranged, and the first bar 31 is arranged between the pair of raised

bars

33A and 33B.

Therefore, for example, when the right side in FIG. 11 is the front side in the traveling direction, the first rail is positioned in front of the brushed bar 33B having the second raised portion 33c in the traveling direction so as to be adjacent to the brushed bar 33B. 31 will be arranged. In addition, the 2nd crosspiece 34 is arrange | positioned on the outer side of a pair of raising | fluffing

crosspiece

33A and 33B. Thus, by arranging the first bar 31 in front of the raised bar 33B, the space in front of the second raising part (the raised part on the right side of the raised bar 33B in FIG. 11) 33c is expanded. Thus, the skin surface 37 can be further bited into the inner blade 13 side. Therefore, when the electric razor 1 is used, the second raised portion 33c can be easily brought into contact with the skin surface 37. As a result, the difference in raising force between the first raised portion 33c and the second raised portion 33c can be reduced. Relieve and raise hair more efficiently.

In the present embodiment, since the first bar 31 is disposed between the pair of raised bars 33A and the raised bars 33B, the shaving direction of the electric razor 1 is reversed (that is, the left side in FIG. 11). The same action and effect can be obtained also when the front is in the traveling direction.

As described above in detail, in the electric shaver 1 of the present embodiment, the raising force of the second raising portion 33c provided on the rear side in the traveling direction with the vertex Y of the outer blade 11 as a boundary is set to the front side. It is made larger than the raising force of the 1st raising part 33c provided in.

Therefore, when the electric razor 1 is used, the second raised portion 33 c provided on the rear skin contact surface having a low contact pressure with the skin surface 37 can be more easily brought into contact with the skin surface 37. As a result, it becomes possible to alleviate the difference in raising force between the first raised portion 33c and the second raised portion 33c, and more efficiently raise the hair. And since it can raise | generate a hair more efficiently, the improvement of the introduction performance with respect to the outer blade 11 of the sleeping hair can be aimed at, and the shaving ability of the electric shaver 1 can be improved.

Moreover, in this embodiment, the crosspiece 32 of the outer blade 11 includes a pair of raised raised

bars

33A and 33B in which the first and second raised

portions

33c and 33c are formed in the same shape, and a skin contact surface that comes into contact with the skin. 31a includes a first bar 31 provided to be closer to the inner blade 13 than the first and second raised

parts

33c, 33c, and between the pair of raised

bars

33A, 33B, A first bar 31 is arranged adjacent to the raised bar.

Therefore, the second raised portion 33c can be easily brought into contact with the skin surface 37 (easy to bite in), and the raised force of the second raised portion 33c can be increased relative to the raised force of the first raised portion 33c.

In the present embodiment, the raised bar 33 mainly has a raised portion 33c (right side in FIG. 8) that exhibits a raised action when moved in one direction of shaving (from left to right in FIG. 3). A raised portion 33c (left side in FIG. 8) is provided that exhibits a raised action when moved mainly in the other direction of shaving (from right to left in FIG. 3). The raised bar 33 is provided on one end side and the other end side with the vertex Y of the outer blade 11 as a boundary, and the first bar 31 is disposed between the pair of raised

bar

33A and 33B.

Therefore, even if the electric razor 1 is moved in one direction of the shaving direction and the other direction, the raising force of the second raising portion 33c provided on the rear side in the traveling direction is the first raising raised on the front side. There exists an effect that it can be made larger than the raising force of the part 33c. Therefore, even if the electric razor 1 is moved in either the one direction or the other direction of the shaving direction, the difference in the raising force between the first raising portion 33c and the second raising portion 33c is alleviated. Since it can raise | generate a hair efficiently, there exists an effect that a user's convenience becomes favorable.

In the present embodiment, the crosspiece 32 includes a vertical crosspiece 30 extending along the longitudinal direction 23 of the outer blade 11 and a horizontal crosspiece 35 extending along the short side direction 25, and The raising bar 33 provided with the raising part 33c on the bar 30 is arranged. Therefore, it becomes easy to insert the hair raised by the raised bar 33 into the blade hole 36, and the hair can be easily shaved.

Further, in the present embodiment, the raised portion 33c of the raised bar 33 has a tapered shape that rises obliquely toward the outside of the outer blade 11 (upward in the drawing). Thus, the raising part 33c can be formed in a simple shape by making the short direction end 33l into a raised section 33c with a tapered cross section (tapered shape). Further, by making the raised portion 33c tapered so as to rise obliquely toward the outer side of the outer blade 11 (upward in the figure), body hair having a small raised angle can sink between the raised portion 33c and the skin. It is possible to suppress the sleeping hair and to stand up more reliably.

Further, in the present embodiment, the longitudinal end portion 33j of the raised bar 33 is formed in a substantially straight section, and the inclined central portion 33k is provided with the inclined portion 33b, and the longitudinal end portion 33j and the longitudinal central portion 33k. The boundary portion 33m is gently curved and connected. In this way, when the outer cutter 11 is moved along the skin surface 37 by gently bending and connecting the boundary portion 33m between the longitudinal end portion 33j and the longitudinal center portion 33k of the raised bar 33. Moreover, the influence (damage) which the boundary part 33m gives to the skin surface 37 can be suppressed.

The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments, and various modifications can be made. For example, in the above embodiment, in order to make the raising force of the second raising portion 33c larger than the raising force of the first raising portion 33c, the skin contact surface is interposed between the pair of raising

bars

33A and 33B having the same shape. Although the 1st crosspiece 31 with low 31a was arranged, the raising power of the 2nd raising part is enlarged by making the shape and form of the 1st raising part 33c and the 2nd raising part 33c different. You may do it.

According to the present invention, the difference in the raising force between the first raised portion provided on the front side in the traveling direction and the second raised portion provided on the rear side with the apex of the outer blade as a boundary is relaxed, and more efficiently. You can get an electric razor that can cause hair.

Claims

A razor body,
An outer blade having a blade hole defined by a crosspiece;
An inner blade that is disposed on the inner side of the outer blade and moves relative to the outer blade to cut the body hair inserted into the blade hole; and
A brushed portion provided on the outer blade crosspiece, and raised on the skin surface by contacting the hair when moving on the skin surface;
The outer blade is formed in an arc shape projecting toward the skin surface side, and is an electric razor provided to be exposed at an end of the razor body,
The raised portion has a first raised portion provided on the front side in the advancing direction of the razor body with a vertex of the outer blade as a boundary, and a second raised portion provided on the rear side in the advancing direction,
An electric razor characterized in that the raising force of the second raising part is larger than the raising force of the first raising part.
The outer blade bar is
A pair of raised hair bars in which the first and second raised portions are formed in the same shape;
A skin contact surface that comes into contact with the skin is provided with a first bar provided so as to be closer to the inner blade side than the first and second raised portions,
The electric shaver according to claim 1, wherein the first bar is disposed between the pair of raised bars so as to be adjacent to the brushed bar.