JP2659629B2 - Razor blade support head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a razor blade support head in which a plurality of blade holes are integrally formed in a blade plate incorporated in a support and a blade is formed at an inner edge of the blade hole.

[0002]

2. Description of the Related Art Such a razor blade supporting head is disclosed in, for example, Japanese Patent Publication No. 57-500631, Japanese Patent Publication No.
As shown in Japanese Patent No. -501891, the blade hole has a substantially elliptical shape or a circular shape.

[0003]

However, in such a shape, the cutting edge perpendicular to the extending direction of the guard forming the shaving surface by being connected to the cutting hole is one of the cutting edges formed on the inner edge of the cutting hole. When the blade support head is moved in the direction perpendicular to the guard when the guard and blade plate are used in contact with the skin, the extension of the guard out of the blade edge of each blade hole in the blade plate is always present. There was a danger of cutting the skin due to the part orthogonal to the setting direction.

An object of the present invention is to improve the safety by improving the shape of the blade hole.

[0005]

SUMMARY OF THE INVENTION In view of this object, a blade support head of a razor according to the present invention has a blade plate incorporated in a support 1 having a guard 9 as shown in the drawings of each embodiment described later. 4, a large number of blade holes 11 are provided integrally,
The blade hole 11 and the guard 9 are connected to form a shaving surface P. As shown in the drawings of the first embodiment (FIGS. 1 to 4) or the drawings of the third embodiment (FIGS. 9 to 12), the inner edge of each blade hole 11 is parallel to the extending direction Q of the guard 9. , And only linear second cutting edges 13 and 14 that extend at an acute angle θ with respect to the extending direction Q of the guard 9. As shown in the drawings of the second embodiment (FIGS. 5 to 8), only the second cutting edges 13 and 14 are formed on the inner edge of each blade hole 11.

[0006]

As described above, since the blade hole 11 does not have a blade edge extending in a direction orthogonal to the guard 9, when the guard 9 and each blade hole 11 are used by being applied to the skin, the blade supporting head is used. Is moved in the direction orthogonal to the guard 9, the risk of cutting the skin is reduced.

[0007]

First Embodiment First, a blade supporting head of a razor according to a first embodiment of the present invention will be described with reference to FIGS. The blade support head comprises a support 1 comprising a blade base 2 and a top plate 3 which are separated from each other, and a blade plate 4 clamped between them.

The blade base 2 includes front, rear, left and right frames 2a, 2b, 2c,
Partition frames 2e and 2f are provided at the center between the front and rear frames 2a and 2b and on both sides thereof.
Exclusion holes 5 are formed between c, 2d, 2e, and 2f. A plurality of support holes 6 are arranged on both front and rear frames 2a and 2b. The recesses 7, 8 formed in the partition frames 2e, 2f are for supporting a holder (not shown).

The top plate 3 includes front, rear, left and right frames 3a, 3b, 3c,
The guard 9 is formed on the front and rear frames 3a, 3b. A plurality of support protrusions 10 are arranged below the front and rear frames 2a and 2b. The blade plate 4 is integrally formed, and a large number of blade holes 11 having an isosceles triangular shape are arranged side by side at the center of the blade plate 4 except for the peripheral edge. The blade hole 11 is provided with three blades 12, 13 and 13 extending in a straight line.
14 continuously form an isosceles triangle. One of the blade edges 12, 13, 14 of the multiple blade holes 11
Is extended in a direction parallel to the extending direction Q of the guard 9 of the top plate 3. The other two cutting edges 13 and 14 use this guard 9
Is inclined by an acute angle θ with respect to the extension direction Q of This inclination angle θ is preferably 45 degrees or less. A large number of support holes 15 are provided at both front and rear edges of the blade plate 4.

The blade plate 4 is placed on the blade base 2, and each support projection 10 of the top plate 3 is inserted into each of the support holes 6 and 15, and the blade plate 4 is connected to the blade base 2 and the top plate 3. It is sandwiched between.
Each of the blade holes 11 of the blade plate 2 is formed by the front, rear, left and right frames 3a, 3 of the top plate 3.
It is exposed between b, 3c, and 3d, and the shaving surface P is formed by connecting the front and rear guards 9 of the top plate 3 and the respective blade holes 11. In particular, in this embodiment, each of the blade holes 11 is provided with a blade edge 12 extending in parallel with the extending direction Q of the guard 9 and an inclined angle θ with respect to the extending direction Q of the guard 9. Cutting edge 1
There is no blade edge extending in the direction perpendicular to the guard 9 because only the guards 3 and 14 are provided. Even if it is moved in a direction orthogonal to 9, the risk of cutting the skin is reduced, and the safety is improved as compared with the prior art.

[0011]

Second Embodiment Next, a second embodiment shown in FIGS. 5 to 8 will be described focusing on differences from the first embodiment. Each blade hole 11 of the blade plate 4 has a diamond shape. The blade hole 11 is provided with a blade on the entire inner edge thereof, and four linear blade edges 13, 14 are continuously formed in a diamond shape. A pair of cutting edges 1 facing each other
3 and a pair of blade edges 14 adjacent to and opposed to each other extend at an acute angle θ with respect to the extending direction Q of the guard 9. It is needless to say that the blade hole 11 has no cutting edge extending perpendicular to the extending direction Q of the guard 9, and there is also a cutting hole parallel to the extending direction Q of the guard 9 like the cutting edge 12 of the first embodiment. Not formed.

[0012]

Third Embodiment Next, a third embodiment shown in FIGS. 9 to 12 will be described focusing on differences from the first embodiment. Each blade hole 11 of the blade plate 4 has a pentagonal shape. The blade hole 11 is provided with a small inner edge portion 16 opposed to the inner edge thereof, and three straight cutting edges 12, 13, 14 are formed. One blade edge 12 extends in a direction parallel to the extending direction Q of the guard 9. A pair of cutting edges 13, 1 opposed to each other with respect to the cutting edge 12 with both inner edge portions 16 as boundaries.
Numerals 4 are formed so as to be continuous with each other, and extend at an acute angle θ with respect to the extending direction Q of the guard 9. Each of the blade holes 11 is formed with a pair of inner edges 16 orthogonal to the extending direction Q of the guard 9. However, since the inner edges 16 do not have any cutting edges, they are not used during use. There is no risk of the inner edge 16 damaging the skin.

[0013]

According to the razor blade supporting head according to the present invention, the cutting edge 1 formed at the inner edge of each blade hole 11 of the blade plate 4 is provided.
2,13,14 reduce the risk of cutting the skin and improve safety.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a blade supporting head of a razor according to a first embodiment.

FIG. 2 is an assembled perspective view.

FIG. 3 is an enlarged sectional view taken along line XX of FIG. 2;

FIG. 4 is a partially enlarged plan view showing only the blade plate of the first embodiment.

FIG. 5 is an exploded perspective view showing a blade supporting head of a razor according to a second embodiment.

FIG. 6 is an assembled perspective view of the same.

FIG. 7 is an enlarged sectional view taken along line YY of FIG. 6;

FIG. 8 is a partially enlarged plan view showing only the blade plate of the second embodiment.

FIG. 9 is an exploded perspective view showing a blade supporting head of a razor according to a third embodiment.

FIG. 10 is an assembled perspective view of the same.

FIG. 11 is an enlarged sectional view taken along the line ZZ of FIG. 10;

FIG. 12 is a partially enlarged plan view showing only the blade plate of the third embodiment.

[Explanation of symbols]

1 support, 2 blade base, 3 top plate, 4 blade plate, 9 guard, 11 blade holes, 12 blades, 13 blades, 14 blades,
P Shaving surface, Q guard extension direction

Claims (1)

(57) [Claims] A blade plate (4) incorporated in a support (1) having a guard (9) is provided with a large number of blade holes (11) integrally therewith. In the blade supporting head of the razor having the shaving surface (P) formed by tying the guards (9), the inner edge of each of the blade holes (11) extends in the extending direction (Q).
And a second linear cutting edge (13, 14) extending at an acute angle (θ) to the extending direction (Q) of the guard (9). A blade supporting head for a razor, wherein only the two cutting edges (12, 13, 14) are formed, or only the second cutting edges (13, 14) are formed.