JPH09135973A - Safety razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety razor consisting of three stacked blade bodies capable of easily discharging beard cuttings clogging a space between a lower blade body and an intermediate blade body. SOLUTION: This safety razor is composed of three blade bodies such as an upper blade body 1, an intermediate blade body 2 and a lower blade body 3 laid over each other in that order from top. In addition, an upper spacer 4 and a lower spacer 5 are interposed between the blade bodies in order to keep the interval between the blade bodies constant. Besides, each of the spacers 4, 5 has deep slit grooves 11, 14 provided from the front edge to the rear end. Consequently, the spacer has plural comb teeth 12, 13 formed by the split grooves 11, 14 leaving the base of the space undivided. The rear part of each of the spacers 4, 5 comes out of the rear end of the blade body and vertically hangs along the rear end of the blade body, bending downward from the folded part of the comb tooth. Further, the vertically hanging part of the upper spacer 4 comes into contact with the outside of the vertically hanging part of the lower spacer 5. The slit groove 11 of the upper spacer reaches the upper surface of the lower blade body 3 and coincides with the position 14 of the slit groove 14 of the lower spacer in such a manner that the slit groove 14 of the lower spacer running through depthwise between the intermediate blade body 2 and the lower blade body 3 communicates with the outside through the slit groove 11 of the upper spacer 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety razor in which three blades are stacked.

[0002]

2. Description of the Related Art Conventionally, there has been no safety razor having three blades.

[0003]

One of the reasons why there has been no safety razor in which three blades are stacked in the past is that the shavings clogged between the blades could not be discharged smoothly. It is. An object of the present invention is to provide a safety razor in which three blades are stacked and a shaving clogged between the blades can be smoothly discharged.

[0004]

According to the present invention, there is provided a safety razor having three blades formed of a rectangular thin metal plate, and each blade has a front edge formed with a sharp edge. The blades are mounted on top of each other in the order of upper blade, middle blade and lower blade so that each blade edge is parallel, and the blade edge of the upper blade is the lower blade. The upper and lower spacers are interposed between the blades to maintain a constant distance between the blades, and the spacers are located between the blades. By providing a plurality of deep cut grooves from the front edge to the rear edge, the spacer is divided into a plurality of comb teeth leaving the base of the spacer, and the rear of the spacer is from the rear end of the blade body. Go outside,
It bends downward from the bent portion of the comb teeth and hangs down along the rear end of the blade body, and the hanging part of the upper spacer contacts the outside of the hanging part of the lower spacer, and the middle blade body and the lower blade body So that the notch groove of the lower spacer penetrating in the front-rear direction communicates with the outside through the notch groove of the upper spacer. It is provided so as to reach the upper surface of the lower blade body and coincide with the position of the cut groove of the lower spacer.

[0005]

Next, embodiments of the present invention will be described with reference to the drawings. An embodiment relates to a safety razor replacement blade having three blades. The three blades, that is, the upper blade 1, the middle blade 2 and the lower blade 3, have an upper spacer 4 and a lower spacer 5 interposed therebetween, and the blade base 6 and the top plate 7 are interposed therebetween. Is sandwiched between. The blade edge 8 of the upper blade body is located slightly retreating from the blade edge 9 of the middle blade body, and the blade edge 9 of the middle blade body is located slightly retreating from the blade edge 10 of the lower blade body. I have.

The spacers 4 and 5 are both formed from a single metal plate, and are provided with a plurality of cut grooves 11 and 14 from the front edge to the rear edge of the spacer. Server
Is divided into a plurality of comb teeth 12 and 13. Since the comb teeth 12 and 13 are bent at an angle close to a right angle in the middle, only the front half of the bent comb teeth 12 and 13 is attached to each blade, and the bent rear half of the spacer. Hangs outward from the rear end of the blade and hangs close to the rear end of the blade. Each of the comb teeth 12, 13 is not of the same shape but is divided into two types, a long comb tooth 12 and a short comb tooth 13.

The lower spacer 5 has ten comb teeth 12, 1
3, long comb teeth 12 are provided therein, and short comb teeth 1 are provided.
3 is 6 pieces. The long comb teeth 12 have a slightly pointed triangular tip, and an upward projection 15 is integrally provided at the tip. The tip of the long comb tooth 12 protrudes slightly forward from the blade edge 9 of the middle blade body thereon, so that the projection 15 rises immediately before the blade edge 9. Therefore, the skin comes into contact with the projections 15 when shaving, so that the blade edge of that portion does not come into contact with the skin. The projection 15 is formed in a rounded shape in order to improve the texture when used. Since the tip of the long comb tooth 12 only slightly protrudes beyond the blade edge 9 of the middle blade, the tip of the comb tooth 12 does not extend to the blade edge 10 of the lower blade body thereunder. Is also located at the rear. There is no projection at the tip of the short comb tooth 13 of the lower spacer, and since the length is short, it is retracted from the blade edge 9 of the middle blade body. Therefore, the tip of the short comb tooth 13 is exposed to the outside. I haven't. In the present invention, the short comb teeth 13 having no projection are not necessarily required.

The comb teeth 12, 13 of the lower spacer are sandwiched between the middle blade body 2 and the lower blade body 3 in the above-described state, but the lower spacer 5 itself is further provided. The lower part of the lower spacer bends downward at the rear end of the lower blade body 3 and hangs down at the rear part of the lower blade body 3.
A plurality of cut grooves 14 provided between the comb teeth 12 and 13
Cuts into the rear portion of the lower spacer, so that the cut groove 14 extends to the rear half of the lower spacer which is bent at the rear end of the lower blade body 3 and hangs down. Therefore, the spacer portions sandwiched between the middle blade body 2 and the lower blade body 3 are only the comb teeth 12 and 13 arranged at intervals.
Since the base extending in series is exposed to the outside from the rear end of the blade body, the cut groove 14 between the comb teeth penetrates through the gap between both blade bodies 2 and 3 in the front-rear direction to remove shavings. It is a passage for discharging from the rear end.

The upper spacer-4 has nine comb teeth 12,13.
Are provided, in which five long comb teeth 12 and five short comb teeth 13
Are four. The tip of the long comb tooth 12 has a slightly pointed triangular shape and an upward projection 15 is integrally provided at the tip, and there is no projection at the tip of the short comb tooth 13 of the upper spacer. The lower spacer 5 is similar to the lower spacer 5 described above, in that the tip of the comb tooth 13 which is retracted from the blade edge 8 of the upper blade body and is short is not exposed to the outside. The function of the upper spacer-4 is the same as that of the lower spacer-5.

The upper spacer 4 also bends in the middle similarly to the lower spacer 5, and the rear portions of the two spacers hanging from the rear end of the blade body to the outside are overlapped with each other. The rear half of the lower spacer 5 is in contact with the lower spacer 5 so as to cover the outer half of the lower half. The cut groove 11 of the upper spacer is deeply cut, and the lower blade body 3 is formed similarly to the cut groove 14 of the lower spacer.
Because it reaches below the upper surface of the upper space,
The base portion 16 of the lower spacer does not cover the rear opening for discharging the whiskers by the notch 14 of the lower spacer, and does not prevent the whiskers stuck in the notch 14 of the lower spacer from being discharged. Absent.
As is apparent from this, the cut grooves 11 and 14 of the upper and lower spacers are provided so that their center lines are substantially at the same position in order to discharge shavings. The reason for this is that if the positions of the cut grooves 11 and 14 do not match, the shavings clogging the cut groove 14 of the lower spacer will be interrupted by the comb teeth 12 and 13 of the upper spacer. Because it cannot be discharged from the rear end.

As described above, five long comb teeth 12 of the upper spacer are provided at intervals, and four long comb teeth 12 of the lower spacer are provided at intervals. The positions of the long comb teeth of both spacers do not match. The reason is that if the positions of the long comb teeth 12 of both spacers are the same, both the upper and lower projections 1 provided at the tips of the comb teeth.
This is because the positions 5 and 15 coincide with each other, and the upper blade 1 and the middle blade 2 are shaved off at the same place on the skin, being interrupted by those projections. Therefore, when the safety razor is viewed from above, the upper and lower projections are alternately arranged. As shown in FIGS. 2 and 4, the width and pitch of the cut groove 11 of the upper spacer and the cut groove 14 of the lower spacer are the same and overlap. Therefore, the long comb teeth 12 of the upper spacer and the short comb teeth 13 of the lower spacer overlap with the same width, and the upper spacer is overlapped.
The short comb teeth 13 and the long comb teeth 12 of the lower spacer overlap with the same width. Reference numeral 17 denotes each blade and space.
A through hole provided in the server, for inserting a columnar leg provided on the back surface of the top plate 7 to connect these components.

[0012]

The present invention is constructed as described above, and the upper spacer which is also outwardly protruded from the rear portion of the lower spacer which protrudes from the rear end of the blade body to the outside. So that the cut groove of the lower spacer penetrating in the front-rear direction between the middle blade body and the lower blade body communicates with the outside through the cut groove of the upper spacer. The cut groove of the upper spacer reaches the upper surface of the lower blade body and is provided so as to coincide with the position of the cut groove of the lower spacer. Therefore, the shavings clogged in the cutting groove between the middle blade and the lower blade are newly shaved and automatically pushed by the shavings coming into the cutting groove, so that the shavings go out from the rear end to the outside. It can be discharged smoothly. In addition, there is an effect that the shavings remaining without being pushed out can be easily washed away with water.

[Brief description of the drawings]

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

FIG. 2 is an exploded perspective view of the present invention.

FIG. 3 is a sectional view showing the relationship between three blades and a spacer.

FIG. 4 is a partial side view of FIG. 3 viewed from the left side.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Upper blade body 2 Middle blade body 3 Lower blade body 4 Upper spacer 5 Lower spacer 6 Blade base 7 Top plate 8 Blade edge 9 Blade edge 10 Blade edge 11 Cut groove 12 Comb tooth 13
Comb tooth 14 Cut groove 15 Projection 16 Base 17 Through hole

Claims (1)

[Claims] 1. A safety razor having three blades formed of a rectangular thin metal plate, wherein a front edge of each blade is formed with a sharp edge and each edge is parallel. The blade body is mounted on the upper blade body, the middle blade body, and the lower blade body in order from the top, and the blade edge of the upper blade body is slightly receded from the blade edge of the lower blade body. There is an upper spacer and a lower spacer interposed between the blades to keep the distance constant, and a plurality of spacers extend from the front edge to the rear edge. The spacer is divided into a plurality of comb teeth except for the base part of the spacer by providing a deep cut groove, and the rear part of the spacer comes out of the rear end of the blade body to form a bent part of the comb teeth. From the middle blade and the lower blade, and the upper spacer is in contact with the lower part of the lower spacer. The cut groove of the upper spacer is formed so that the cut groove of the lower spacer penetrating in the opposite direction communicates with the outside through the cut groove of the upper spacer. A safety razor, which reaches the upper surface and is provided so as to coincide with the position of the cut groove of the lower spacer.