JPH0796070B2 - Two-bladed safety razor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a two-blade safety razor mainly used in ordinary households.

[0002]

2. Description of the Related Art To increase the safety of a safety razor,
Conventionally, there is a safety razor that covers the blade edges at regular intervals.
Was present. Also a two-bladed safety razor with such a configuration
Between the blade base and the top plate and the upper and lower blades and the space between them.
And the front edge of the top plate is shaped like a comb.
The comb-shaped front edge covers the upper blade edge with a space.
It is set up like this.

[0003]

With the conventional safety razor
If the blade edges are covered at regular intervals, safety is certainly
Although it increases, the efficiency of shaving decreases as the blade edge is covered
There was a flaw. In addition, in front of the predicate the two blade safety razor
Only the upper blade is covered with comb teeth at regular intervals.
So, the safety effect was lessened. The present invention is a double blade
Improved safety for all razors with improved edge coating
That can improve shaving and at the same time efficiently shave
Is intended to provide.

[0004]

According to the structure of the present invention, two blade mounting surfaces 2 and 11 are provided in parallel with each other in the longitudinal direction of the upper surface of the blade base and mounted on these blade mounting surfaces. In the two-blade safety razor in which the leading blade 3 and the trailing blade 4 are fixed by the blade holding portions 12 and 13, respectively, leading blades 3 and 4 are guided.
In front of the blade edge 5 and the subsequent blade edge 6, parallel to those blade edges.
The leading guard portion 7 and the trailing guard portion 8 extend,
The length of both guards 7, 8 that touch the skin when shaving
It does not extend in a series across the
As a set of many relatively thin guard element elements arranged at equal intervals
On the upper surface of each guard element of the double-edged blades 3 and 4.
Protrusions 9 and 1 protruding higher than the blade edges 5 and 6 adjacent to
0 is provided, and the pitches of both protrusions 9 and 10 are the same.
Therefore, the phase of both is shifted by a half pitch .

[0005]

Embodiments of the present invention will now be described with reference to the drawings. The tool rest 1 is formed of plastic integrally with the handle 14. The two blade mounting surfaces 2 and 11 are formed on the upper surface of the blade base 1 in parallel with the longitudinal center line of the blade base 1 as a boundary. Both the blade mounting surfaces 2 and 11 are inclined surfaces that rise forward. Therefore, the boundary between the two blade mounting surfaces 2 and 11 forms a step. Furthermore, several hole parts 15 are bored in these two blade mounting surfaces 2, 11. A large number of small square whiskers discharging holes 16 are formed on the trailing blade mounting surface 11 along the step between the two blade mounting surfaces 2 and 11, and the trailing guard portion 8 is formed by the remaining partition portions. It is formed. Since the upper surface of the trailing guard portion 8 is on the extension of the trailing blade mounting surface 11, it is inclined so as to rise toward the front and forms a protrusion 10 higher than the leading edge of the trailing blade edge 6. To do.

A front side portion of the leading blade mounting surface 2 is formed in a comb tooth shape, and each comb tooth serves as a leading card portion 7. Since the upper surface of the leading guard portion 7 is on the extension of the leading blade mounting surface 2, it is inclined so as to rise toward the front, and the protruding portion 9 that protrudes higher than it in front of the leading blade edge 5 is formed. To form. Although the protrusions 9 and 10 have the same pitch, their phases are shifted by a half pitch.

A top plate 17 integrally formed of plastic is placed on the two blades 3 and 4, and some projections 18 formed on the back surface of the top plate penetrate through the round holes of the blades to form a hole portion 15.
And the top plate 17 is attached to the blade stand 1. The top plate 17 is composed of both side plate portions 19 and 19 and two parallel blade holding portions 12 and 13 connecting between the both side plate portions. The two blade holding portions 12 and 13 are leading blades and trailing blades. 4 is fixed on the blade mounting surface.

[0008]

[Effect of the Invention A present invention the above-described configuration, both
The part of the guards 7 and 8 that touches the skin when shaving is full length
It does not extend in a series across and through a large number of spaces etc.
As a set of a large number of relatively thin guard elements lined up at intervals
It extends to the upper surface of each guard element of double-edged blades 3 and 4
Protrusions 9 and 10 that protrude higher than the adjacent blade edges 5 and 6
Is provided. Therefore, the protrusions 9 and 10 are double-edged.
The same effect as covering the edges 5 and 6 at regular intervals
To improve the safety of the razor during use.
You can In addition, conventionally, the top edge with a comb-shaped front edge was formed.
Stick the plate to the upper surface of the blade and use the comb teeth to keep the blade edge
Since it was configured to cover every other space, a beard must be placed between the blade and the comb teeth.
Although there is a risk of clogging with soot, the present invention is higher than the blade edges 5 and 6.
The blade edges are covered from the front by the protruding portions 9 and 10.
Since it has a structure like this, the effect that there is no risk of the beard residue getting stuck
Play. Furthermore, the pitch of both protrusions 9 and 10 is the same.
The phases of the two are shifted by a half pitch. Thus leading
The projection of its guard element when the blade 3 performs a shaving action
The beard left unshaved by the presence of 9 is
You can shave surely, so the blade edges are covered at regular intervals.
Even if you are shaving, you can shave efficiently without leaving any shave.
Wear.

[Brief description of drawings]

FIG. 1 is a plan view of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

3 is a sectional view taken along line BB in FIG.

[Explanation of symbols]

1 blade stand 2 blade mounting surface 3
Leading blade 4 Trailing blade 5 Leading blade edge 6
Trailing edge 7 Leading guard 8 Trailing guard 9
Projection part 10 Projection part 11 Blade mounting surface 1
2 blade holding part 13 blade holding part 14 handle 1
5 Holes 16 Holes 17 Top plate 1
8 protrusions

Claims (1)

[Claims] 1. A blade mounting surface (2, 11) is provided in parallel with a longitudinal direction of an upper surface of a blade base, and a leading blade (3) and a trailing blade mounted on these blade mounting surfaces. In a two-blade safety razor, in which (4) is fixed by blade clasps (12, 13), leading blade edges (5) of both blades (3, 4)
The leading guard portion (7) and the trailing guard portion (8) extend in front of the trailing edge and the trailing blade edge (6), respectively, in parallel with the edge, and the skin is shaving when both guard portions (7, 8) are shaving. Hit
The part does not extend in series over the entire length, and there are many spaces
A large number of relatively thin guard elements that are evenly spaced across the element
Of the double-edged (3,4) guard element that extends as a set of
On the upper surface of the blade, it is higher than the blade edges (5, 6) adjacent to it.
Protruding parts (9, 10) are provided, both protruding parts
The pitch of (9, 10) is the same and the phase of both is half pitch.
A two-blade safety razor characterized by a misalignment .