JPH09276567A - Safety razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To soften the touch on the skin at shaving time, and prevent razor rash or the like by superposing adjacent blade bodies by relatively inclining them in a safety razor formed by superposing two or three blade bodies between respective blade bodies through spacers. SOLUTION: In a replaceable blade of a safety razor having three blade bodies, the blade bodies are sandwiched and fixed between a top plate 1 and a blade stand 2, and are superposed in order of an upper blade body 3, an intermediate blade body 4 and a lower blade body 5 from above. In this case, spacers 6 and 7 are interposed and arranged between the blade bodies 3 and 4 and between the blade bodies 4 and 5. The respective spacers 6 and 7 are bent so that step differences 8 and 9 extend in the lengthwise direction of its rear end, and therefore, the blade bodies 4 and 3 are inclined forward and downward by a quantity of the step differences 9 and 8. This inclination is set at an angle such as crossing with the extension of lines drawn toward the respective blade edges from the respective blade body rear edges so as to vertically cross the respective blade edges of the blade bodies 3 and 4, and therefore, the touch on the skin at shaving time can be softened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety razor having two or three blades.

[0002]

2. Description of the Related Art In a conventional two-blade safety razor, two blades are sandwiched between a top plate and a blade base, and a spacer is interposed between the blades. Since the spacer is a flat synthetic resin piece or a metal piece, the two blades are in a parallel positional relationship. A rod-shaped synthetic resin called a guard portion extends laterally at the front edge of the blade base, and the blade edge covers the card.
The angle formed by the tangent line drawn on the surface of the blade and the blade surface is called the shaving angle. The shaving angle is the angle that determines the angle between the blade and the skin when shaving, so if the shaving angle is large, the blade edge will bite into the skin strongly, and if the shaving angle is small, the blade edge will feel soft to the skin. Become. In a conventional two-blade safety razor, two blades are held in parallel with each other, so the shaving angles of both blades are almost equal.

[0003]

The conventional two-blade safety razor has the structure described above, and the two blade bodies have substantially the same shaving angle. At the time of shaving, the lower blade first hits the beard, but if the lower blade has a small shaving angle, it is not possible to capture the beard firmly, so a considerable amount of unshave is left at the stage of the lower blade, and then the upper blade is Even if it slides on the upper part, it will cause unshaving like the lower blade. Therefore, the shaving angle of the conventional two-blade safety razor is not so small and both blades bite deeply into the skin, so the person with weak skin loses the razor. In the case of a safety razor using three blades, when the shaving angles of the three blades are almost the same, more people may lose the razor. An object of the present invention is to provide a safety razor having two or more blade bodies, and by providing a safety razor capable of smooth shaving by changing the shaving angle of each blade body.

[0004]

The structure of the present invention is such that two or three blades are stacked between the blades via a spacer and the blade edges of the respective lower blades are stacked. In a safety razor in which the blade edge of the blade body on it is receding more than, for at least two adjacent blade bodies of the stacked blade bodies,
The blades are relatively inclined so that the extension of the line drawn from each blade's trailing edge toward each blade intersects each blade edge vertically and intersects ahead of the blade edge. It is characterized by being overlapped.

[0005]

The drawings show a spare blade for a safety razor having three blades. The blade body is fixedly attached between the top plate 1 and the blade base 2. The blades are stacked in this order from top to bottom: upper blade 3, middle blade 4, and lower blade 5. An upper spacer 6 is interposed between the upper blade body 3 and the middle blade body 4, and a lower spacer 7 is interposed between the middle blade body 4 and the lower blade body 5. The spacers 6 and 7 are bent so that steps 8 and 9 extend in the longitudinal direction of their rear ends. Therefore, the lower blade body 5 mounted so as to be in close contact with the upper surface of the blade base 2 is in a horizontal state, but the middle blade body 4 on the lower blade body 5 is lowered by the step 9 toward the blade edge direction. It is inclined. Further, the upper blade body 3 on the middle blade body 4 is inclined forward and downward with respect to the middle blade body 4 by the step 8. Since the upper blade body 3 is inclined forward and downward with respect to the lower blade body 5 by adding the steps 8 and 9, the lower blade body 5 is horizontal and the middle blade body 4 is The upper blade 3 inclines slightly downward, and the upper blade 3 inclines downward with a larger inclination angle than the middle blade 4.

Since each blade shown in the drawings has the above-mentioned construction, the lower blade 5 has the largest shaving angle during use.
The shaving angle of the middle blade body 4 is the second largest, and the shaving angle of the upper blade body 3 is the smallest. Although the drawing shows a replaceable blade in which the three blades are not in a parallel relationship, the present invention is not limited to this, and two blades of the three blades are parallel to each other. Therefore, the other blade body may be inclined with respect to the other two blade bodies. Further, it is needless to say that the present invention is applied to a safety razor having two blades.

In order to give the middle blade body 4 and the upper blade body 3 a downward slope, the rear ends of the spacers 6 and 7 are bent to form steps 8 and 9. The structure of the spacer for inclining is not limited to the bending work, and may be any structure capable of inclining the blade. For example, the thickness of the spacer may be gradually increased toward the rear, or a thin strip of the same material as the spacer may be formed in the longitudinal direction of the rear portion of the flat spacer. May be adhered.

The blade base 2 is integrally formed of synthetic resin, and a card portion 10 extends laterally at the front edge portion. The angle formed by the tangent line drawn from the edge of the blade to the surface of the card portion 10 and the blade surface is the shaving angle. A pair of groove grooves 11, 11 facing each other extend in the longitudinal direction on the lower surface of the blade stand 2, and are fitted with a blade inserter provided at a right angle on the top of the handle of a separate holder to replace the blade. Is attached to the holder. The three blades 3, 4, 5 and the two spacers 6, 7 and the blade base 2 that are stacked are provided with a plurality of circular holes at the same position, respectively. The missing parts that are overlapped by the extending projections 12 and 13 are fixed. Three convex portions 12 are provided side by side in the front longitudinal direction of the top plate 1, and four convex portions 13 are provided side by side in the rear longitudinal direction of the top plate 1. In order to prevent the protrusions 12 lined up in front, if the protrusions are arranged behind the blade body, the tip of the blade body may flip up due to beard resistance during use. Is.

[0009]

The present invention has two or three blades,
For at least two adjacent blades of the stacked blades, the extension of the line drawn from each blade trailing edge toward each blade edge so as to cross each blade edge of the blades vertically The blade bodies are characterized by being relatively inclined and stacked so that they also intersect at the other end. Therefore, in the case of a two-blade safety razor, the shaving angle of the upper blade body is smaller than the shaving angle of the lower blade body, so that there is an effect that the skin contact becomes softer when shaving. Here, the role of the upper blade is to cut the beard that is pulled up and lifted from the skin while the lower blade is pulling on the beard, so the shaving angle of the upper blade is small. However, the efficiency of shaving does not deteriorate. With a three-blade safety razor, at least one of the blades must have a smaller shaving angle than the other blades, and when all blades are relatively inclined, the shaving angle should be as shown in the drawing. Becomes smaller in order from the lower blade to the upper blade, so that there is an effect that the skin contact becomes softer when shaving as compared with a safety razor in which three blades are simply stacked.

[Brief description of drawings]

FIG. 1 is a sectional view of a replacement blade of the present invention.

[Explanation of symbols]

 1 Top Plate 2 Blade Stand 3 Upper Blade 4 Middle Blade 5 Lower Blade 6 Upper Spacer 7 Lower Spacer 8 Step 9 Step 10 Guard Section 11 Groove 12 Convex 13 Convex

Claims (1)

[Claims] 1. Two to three blade bodies are provided between each blade body for space.
In a safety razor in which the blade edges of the upper blade bodies are retracted rather than the blade edges of the respective lower blade bodies that are stacked via the ser, at least two adjacent blades of the stacked blade bodies are adjacent to each other. Regarding the blades, those blades are arranged so that the extension of the line drawn from each blade trailing edge toward each blade edge so as to cross each blade edge of the blades perpendicularly intersects ahead of the blade edge. Safety razor characterized by being relatively inclined and stacked