JP2001062166A - Safety razor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety razor having a spacer between two blade bodies in which beard refuse can be discharged backward from between the blade bodies even in a razor where the spacer exists. SOLUTION: In this safety razor, plural engagement protrusions 8 extended from the bottom surface of a top plate 7 downward are fixed to a blade base 1 through insertion holes provided in a blade body and a spacer, so the blade body and the spacer are held between the blade base 1 and the top plate 7. The spacer is extended to be thin and long in the lateral direction, an interval holding part 16 of a similar thickness to an interval width is formed at least around the insertion hole in the spacer for holding an interval between the blade bodies, and the interval holding parts 16 are connected to each other by a thin plate part 18 which is made thin for letting beard refuse to pass.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety razor used by ordinary people, having two or more blades, and having a structure for discharging a mustache clogged between the blades backward. .

[0002]

2. Description of the Related Art A conventional two-blade safety razor has a single plate-shaped spacer interposed between blade bodies. Therefore, while the safety razor is used, the shaved swarf penetrates between the two blades and is pushed backward, but because of the spacer, the swarf can be moved further backward. Without
Due to the presence of the spacer, the mustache was clogged.

[0003] A safety razor disclosed in Japanese Patent No. 25134449 has been proposed as a device capable of discharging a beard residue backward even when a spacer is attached. This safety razor has as many spacers as the number of protrusions extending downward from the bottom surface of the top plate to connect the blade body between the blade base and the top plate, and the spacers have small washers. Formed in shape
The protrusion is inserted through a round hole in the center of the server. Therefore, a space is created between the spacers, and the shavings are discharged backward through the space.

[0004]

However, when such a washer-shaped spacer is used, a two-blade safety razor usually requires four spacers and a three-blade safety razor. Razors require eight spacers.
When a large number of spacers are used as described above, it is extremely complicated to attach each spacer at a predetermined position during manufacturing, and the manufacturing time becomes longer and the manufacturing cost becomes higher. was there.

In addition, the above-mentioned conventional elongated plate-shaped space is used.
Although the ser had a drawback that the whiskers were clogged, the four insertion holes provided in the spacer were securely arranged in a line, and the work of attaching the razor to the safety razor was easy. In view of the above, the present invention provides a spacer having a passage for discharging a mustache residue backward.
It is another object of the present invention to provide a spacer which can ensure that the insertion holes provided in the spacer are arranged in a line.

[0006]

According to the construction of the present invention, a plurality of blades are sandwiched between a blade base and a top plate, and a spacer is interposed between the blade bodies so as to extend downward from the bottom surface of the top plate. A plurality of extending projections are fixed to the blade base through insertion holes provided in the blade body and the spacer, so that the blade body and the spacer are sandwiched between the blade base and the top plate. In the safety razor being worn,
The spacer is elongated in the lateral direction, and at least around the insertion hole of the spacer, a spacing holding portion having the same thickness as the spacing width is formed in order to keep the spacing between the blades. It is characterized in that it is connected in series by a thin plate portion having a reduced thickness for passing a mustache residue.

[0007]

The present invention is constructed as described above, and the portion between the space holding portions of the spacer for maintaining the space between the blade bodies is reduced in thickness so as to allow the shavings to pass therethrough. A thin plate portion is formed. Therefore, a gap is formed between the thin plate portion and the blade, and the shavings are discharged backward through the gap.

Further, the spacers are connected to each other by a thin plate portion having a small thickness so that each interval holding portion can pass mustache. Since the thin plate portion is literally formed in a thin plate shape, it has a width as a plate. As a result, the thin plate portion may bend in an arc shape in the vertical direction, but does not deform in the front-rear direction while maintaining the horizontal state, so that the insertion holes provided in the spacer are arranged in a line. Can be guaranteed. In other words, since the thin plate portion is a thin plate, even if the thin plate portion bends in the vertical direction, there is no change in the state in which the insertion holes are arranged in a line, and there is a change in the state in which the insertion holes are arranged in a line during manufacturing. The product can be assembled in the same manner as a conventional plate-shaped spacer that does not need to be manufactured, and there is an effect that the manufacturing process is not particularly complicated.

Further, even if a thin plate portion is provided in the middle of the spacer, at least the periphery of the insertion hole is provided with a space holding portion having the same thickness as the space between the blades in order to maintain the space between the blades. Have been. Therefore, it is possible to reliably maintain the interval between the blade bodies even though the spacers having the same thickness do not intervene over the entire length of the blade bodies.

[0010]

Embodiments of the present invention will now be described with reference to the drawings. Although the embodiment relates to a cartridge replacement blade, it goes without saying that the present invention is not limited to the replacement blade type. The cartridge replacement blade has three blades, and a blade base 1, a lower blade 2, and a lower spacer from below.
3, a middle blade 4, an upper spacer 5, an upper blade 6, and a top plate 7 are stacked in this order, and four fitting projections 8 projecting downward from the bottom surface of the top plate 7 have insertion holes 10 for other members. 11, 12, 13,
14 and 15 are inserted. By crushing the tip of the fitting projection 8 protruding from the bottom surface of the blade base 1 to form the fitting head 9, the members are permanently connected. It goes without saying that the present invention may be a safety razor having two blades.

The lower spacer 3 is made of plastic and is elongated and integrally formed, and is provided with four interval holding portions 16, 16, 16, 16 in the middle corresponding to the number of the fitting projections 8 of the top plate. Each of the spacing portions 16 is provided with an insertion hole 12 through which the fitting protrusion 8 is inserted. The space holding portion 16 is for maintaining the space between the lower blade 2 and the middle blade 4, and is formed to a thickness of about 0.8 mm. However, it goes without saying that the thickness of the spacing member 16 is not limited to this value. Further, the front and rear widths of the interval holding portion 16 are numerical values slightly shorter than the front and rear widths of the middle blade 4 superposed thereon.

[0012] At both ends of the lower spacer-3, a spacing member 1 is provided.
Side edge portions 17 and 17 having the same thickness as 6 are formed. The front and rear lengths of the side edge portions 17 and 17 are substantially the same as the front and rear lengths of the middle blade 4, and are sandwiched between the lower blade 2 and the middle blade 4, from the side of the space between the two blades 2 and 4. It is formed in order to prevent the mustache from being pushed out. Side edge 1
7 is also one of the spacing members, but it is a matter of course that the side edge portion 17 may not be present in the present invention. By forming it in the part, it is possible to prevent the mustache from being pushed out from the side.

Each of the spacing portions 16 is connected in series by a thin plate portion 18. The thin plate portion 18 is formed to be thinner than the spacing portion 16 and has a thickness of about 0.3 mm. However, it is a matter of course that the thickness of the thin plate portion 18 is not limited to this value, but in any case, the thickness does not exceed the thickness of the interval holding portion 16. In the drawing, the front surface of the thin plate portion 18 is formed as a vertical surface, but this front surface may be an upwardly inclined surface. When formed in this manner, the whiskers rise along the inclined surface, and can be smoothly discharged backward from the gap between the thin plate portion 18 and the blade.

The thin plate portion 18 is literally plate-shaped, and its front and rear widths are considerably longer than its thickness, so that the thin plate portion 18 bends like a bow in the vertical direction. I do not bend. Therefore, the plurality of insertion holes 12 change their positions with respect to each other in the vertical direction,
The insertion holes 12 arranged in one horizontal row always remain in one row in the horizontal direction, and do not change their positions in the front-back direction. This greatly facilitates the mounting of the spacer in the manufacturing process. As described above, when the spacers are formed in a washer shape and these four spacers are mounted in the gap between the two blades,
Each spacer must be attached to a predetermined position during manufacturing, which is a very complicated process, which increases the manufacturing time and the manufacturing cost. Also, the thin plate portion 18
If the width before and after is a very small number as long as the length of the thickness, the thin plate portion 18 cannot be called a thin plate portion. The plurality of insertion holes 12 cannot be lined up in a row because they bend in a bow shape in the direction. As a result, the same inconvenience as the above-mentioned washer-shaped spacer occurs. Therefore, such a spacer in which the thin plate portion easily bends in the front-rear direction is not the gist of the present invention.

Since the thin plate portion 18 is formed below the lower spacer 3, the thin plate portion 18 comes into contact with the lower blade 2 thereunder and forms a gap with the middle blade 4. It goes without saying that the thin plate portion 18 of the present invention may be formed above the lower spacer-3 instead of such a configuration. In this case, since the gap is formed between the lower blade 2 and the thin plate portion 18,
8 to the rear through the lower side. When the thin plate portion 18 is formed on the upper portion of the lower spacer 3, the front surface of the thin plate portion 18 may be formed as an inclined surface that recedes as it goes downward. By doing so, the mustache is smoothly discharged backward.

The upper spacer 5 is also integrally formed of plastic, and has the same structure as the lower spacer 3 described above.
However, the upper spacer 5 is formed such that the front and rear widths are shorter than the lower spacer 3 as a whole. This is because, in this embodiment, the width of the middle blade 4 is shorter before and after the lower blade 2, and the width of the upper blade 6 is shorter than the middle blade 4. This is because the front and rear widths of the interval holding portion 16 need to be formed slightly shorter than the front and rear widths of the upper blade 6.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of the present invention.

FIG. 2 is a cross-sectional view of the center of the present invention.

FIG. 3 is a cross-sectional view passing through a fitting protrusion of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blade stand 2 Lower blade 3 Lower spacer 4 Middle blade 5 Upper spacer 6 Upper blade 7 Top plate 8 Fitting protrusion 9 Fitting head 10 Insertion hole 11 Insertion hole 12 Insertion hole 13 Insertion hole 14 Insertion Hole 15 Insertion hole 16 Spacer 17 Side edge 18 Thin plate

Claims (1)

[Claims] A plurality of blade bodies are sandwiched between a blade base and a top plate, a spacer is interposed between the blade bodies, and a plurality of fitting projections extending downward from the bottom surface of the top plate are provided. By being fixed to the blade base through the insertion hole provided in the spacer,
In a safety razor in which a blade and a spacer are sandwiched between a blade base and a top plate, the spacer is elongated in a lateral direction, and at least a blade is provided around an insertion hole of the spacer. In order to maintain the interval between the bodies, an interval holding portion having the same thickness as the interval width is formed, and the interval holding portion is connected in series by a thin plate portion having a reduced thickness in order to pass a mustache residue. Safety razor