JP2001276447A - Scissors - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pair of scissors capable of being lightened adjustably on the level of lightness, applying a pattern through weight reduction, and maintaining the elasticity required for a blade body in spite of the weight reduction. SOLUTION: Substantial recesses 4 are formed on the blade surfaces A of the scissors 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in the weight and patterning of scissors.

[0002]

2. Description of the Related Art Scissors used for hairdressing and beauty treatment are 6 inches and weigh about 60 g, and 8 inches are about 80 g.
Is the weight. This weight itself does not feel so heavy when you hold the scissors in your hand, but if you hold the scissors almost all day like a barber or hairdresser, the above weight is heavy and lighter. Is desired.

As an example of weight reduction, there is a scissor material using a titanium alloy, and a blade body made of a titanium alloy and a plate-shaped blade made of a stainless material adhered to a cutting edge portion. Alternatively, a titanium alloy itself is quenched and polished to form a blade.

Further, Japanese Patent Application No. 10-275 filed by the present applicant has been disclosed.
In No. 626, by filling a concave material formed in the blade surface with a lightweight material, various patterns suitable for a barber / cosmetic site are provided on the blade surface, and this pattern does not disappear by polishing, and the weight is reduced. Scissors that can be used have been proposed.

In general, barbers and technicians use a large number of cutting scissors or carding scissors to carry out their work. However, if the weight changes greatly each time they are changed, the sense of hands and fingers is disturbed, which is not preferable for delicate cutting work. . Therefore, a comb scissor that is lighter by the shaving of the comb blade, such as comb scissors, is lighter and more heavy than the cut scissors. There are no considerations.

[0006]

When a lightweight titanium alloy is used as scissors material, the weight of the whole scissors can be reduced, but the weight reduction is too remarkable. If the scissors made of stainless steel, which is currently the mainstream, and such scissors with remarkable lightness are used in combination, the weight difference that occurs every time they are changed is too large, and the technician's fingertips are disturbed.

In this respect, by replacing all of the large number of hand-held scissors with lightened scissors at once, the above-mentioned problem due to the weight difference is eliminated, but replacing them all at once is a burden on economy. In addition, various types of scissors are used in hairdressing and beauty, and hairdressing and beauty technicians prepare a large number of these and use these numerous scissors in various ways. However, at present, only some types of scissors made of titanium alloy are provided, and therefore, it is not possible to replace all scissors prepared by barbers with titanium alloy.

[0008] In addition, the titanium alloy has a low degree of freedom in processing, which is a burden on manufacturing.

[0009] Furthermore, when scissors made of titanium alloy are polished, powder of titanium alloy is emitted. However, since the ignition point of titanium is low, an accidental case in which fire occurs from titanium powder has been reported, which is not preferable.

[0010] In addition to hairdressing scissors, pet scissors are also provided. However, because of the small number and types, relatively large scissors for hairdressing and beauty scissors tend to be diverted and used for pets. Although relatively large hairdressing scissors have a size of about 10 inches, the weight is correspondingly large, and it is desired that the scissors having such a weight be further reduced in weight. In order to reduce the weight, there is a method of thinning the blades of the scissors.

On the other hand, scissors require an appropriate contact pressure between the intersecting cutting edges. In order to obtain such a contact force, the blade body has a slight curvature such that the back of the blade is concave from the base end to the tip, and the blades in such a state are tightened with screws and the tips are pressed together. It is. When scissors are formed with two blades, the blades are pivotally attached with their backs overlapped, but if the backs of the blades are concave, the backs of the blades (especially the base end) When the blades are screwed together, the entire blade becomes a spring and the ends press against each other. When the scissors in such a state where the tips are pressed against each other are opened and closed, the scissors can obtain an appropriate contact pressure at each intersection at the time of opening and closing. Therefore, when the blade is tightened with screws, the blade must have enough elasticity to generate such a contact force against the tightening. For this reason, the blade has a certain thickness between the front and back of the blade. However, this makes the scissors heavy.

In view of the above problems, it is an object of the present invention to make it possible to reduce the weight and to adjust how much the weight is reduced when the weight is reduced. It is an object of the present invention to provide scissors which can be provided with a pattern as it is, and which can maintain the required elasticity of the blade body even by such weight reduction.

[0013]

Means for Solving the Problems and Effects of the Invention In order to solve the above problems, the invention according to claim 1 of the present application has a substantial concave portion provided on the blade surface of the scissors. In this way, since the scissors are in a state where the meat of the blade body has been removed, the scissors are lightened accordingly, and even if they are used and used all day, there is no sense of burden.

According to the second aspect of the present invention, the concave portion is formed at a depth at which the gap between the bottom of the concave portion and the blade back is substantially constant. Thereby, the strength of the blade body is maintained.

According to the third aspect of the present invention, the concave portion is formed on a locus other than the locus traversing the blade body and is formed as a linear concave groove. If a concave groove is formed so as to cross the blade body, it serves as a kind of folding purpose, so that the blade body is easily bent sharply, so that elasticity enough to obtain an appropriate contact pressure cannot be obtained. Therefore, if this is avoided and the groove is formed along a locus other than the crossing, the groove does not act as a fold, and the required elasticity can be maintained.

[0016]

Embodiments of the present invention will be described below.
The scissors 1 shown in FIG. 1 are cutting scissors, and a stainless steel blade 2
Are pivotally connected. The blade body 2 is shown in FIGS.
As shown in FIG.
It is provided as. The recesses 4 have a width of 1 mm and are arranged at equal intervals of 3 mm. Each of the recesses 4 is provided at a depth of 0.8 mm from the blade back B as shown in FIGS. Therefore, the thickness is 0.
The cutting edge portion of 8 mm or less has no concave portion (X in FIGS. 1 and 4).

The scissors are manufactured by the following method. The stainless steel material is forged into a blade body shape.
As shown in FIGS. 2 to 5, a recess 4 is also formed at the time of forging. Prior to polishing as shown in FIG. 4, the concave portion 4 is provided at a depth of 2.5 mm in a semi-finished product of a 3.3 mm-thick blade body. Only the five portions are not provided with the concave portions 4. The semi-finished product 2 'in this state is polished so as to have a final sectional shape K of the blade body.

When the scissors 1 are formed with such a blade body 2, a diamond-shaped lattice pattern is shined on a stainless steel ground by a line drawing by a concave groove, which is excellent in design. In particular, a solid line drawing is drawn on the metal color of stainless steel, and this point is also excellent in design. Further, the scissors 1 are in a state where a part of the meat of the blade body is dropped in the form of a concave portion, so that the weight of the scissors 1 is reduced. The weight of general scissors is 60 as an example.
Although it is a gram, even if this is reduced by about 5 to 6 gram, the burden on the operator is greatly reduced, and according to the present invention, this is possible. Further, when the scissors 1 are polished, the blade edge 7 side (FIG. 1) of the blade table A is polished. However, since the concave portions are substantially concave portions having a certain depth, the rhombic lattice pattern does not disappear. Absent.

The concave portion may be freely formed in addition to the example of the groove-shaped line drawing, and examples thereof include patterns as shown in FIGS. The groove is preferably formed by cutting the groove vertically from the blade surface, so that the sharpness of the pattern drawn by the groove is obtained. In addition to the vertically cut groove, a concave portion in which various plane shapes are vertically formed may be used. In other words, even in the case of reducing the same weight, if the concave portion is formed into a tapered shape or a gentle concave portion, the thickness is impaired, and the blade body strength is impaired. This is because the remaining blade portion has a thickness remaining and the strength is maintained. Also, the shape of the recess is not limited to a geometric pattern,
A concrete pattern as shown in FIG. 12 may be used, and any pattern may be used. Further, it is not necessary to use a line drawing, and a large number of hexagonal concave portions may be scattered in a honeycomb shape so that the blade surface has a honeycomb structure. The recess may be provided on only one of the two blades or on both.

The formation of the recess is not limited to forging, and the recess may be formed simultaneously with the casting of the blade. Alternatively, only the blade may be manufactured first, and the recess may be formed by electric discharge machining. Alternatively, the recess may be formed in any other manner.

[Brief description of the drawings]

FIG. 1 is an explanatory view of scissors in which a blade provided with a concave portion shown in an embodiment is pivotally connected.

FIG. 2 is a perspective view of a semifinished blade body having a recess formed by forging.

FIG. 3 is a plan view of a semi-finished product of the blade shown in FIG. 2;

FIG. 4 is a perspective view as viewed from a cross section of the semifinished product of the blade body shown in FIG. 2, and a cross-sectional view of a final blade body is indicated by a chain line.

FIG. 5 is a perspective view of the blade shown in FIG. 2 from the back of the semi-finished product.

FIG. 6 is another example in which the pattern shape of the concave portion is different.

FIG. 7 is another example in which the pattern shape of the concave portion is further different.

FIG. 8 is another example in which the pattern shape of the concave portion is further changed.

FIG. 9 is another example in which the pattern shape of the concave portion is further different.

FIG. 10 is another example in which the pattern shape of the concave portion is further different.

FIG. 11 is another example in which the pattern shape of the concave portion is further different.

FIG. 12 is another example in which the pattern shape of the concave portion is further different.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Scissors 2 Blade body 4 Recess 5 Peak side A Blade surface B Blade back

Claims (3)

[Claims] 1. Scissors characterized in that a substantial concave portion is provided on the blade surface of the scissors. 2. The scissors according to claim 1, wherein the recess is formed in a depth such that the thickness between the bottom of the recess and the back of the blade becomes substantially constant. 3. The scissors according to claim 1, wherein the recess is a linear groove drawn on a trajectory other than a trajectory crossing the blade body.