JP2004049902A - Slide-proof cut scissors - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide hairdressing cut scissors by which slide-proof effect for hair can be obtained upon cutting hair, the slide-proof condition can be kept even after polishing, good closing feeling can be obtained without rough feeling in scissors closing work, and natural finishing is realized at need especially for cut scissors. <P>SOLUTION: The scissors 1A are for haircutting and hairdressing. Almost linear notches 3 narrower than hair thickness are continuously formed at prescribed intervals on the edges of the scissors. Or, the notches 3 are formed in length not projected from the sliding faces of the scissors and in width from equal to prescribed thickness of hair to thinner than two times. Thus hair is cut in the notches 3 as mentioned above. At that time, hair cut in the notches 3 drops off the notches 3 to prevent clogging to realize smooth closing work and securely linear forming. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
Technical field
The present invention relates to improvement of hairdressing and beauty scissors such as cutting scissors and carding scissors, and more specifically, when the hair is cut or combed, the hair is prevented from slipping on the cutting edge. The present invention relates to scissors which have scissors or have such a non-slip effect even when the scissors are polished, so that a natural finish can be obtained on hair and cutting power and abrasion resistance can be improved.
(Although this application is a divisional application, it substantially follows the original specification of the original application, and the description of “claim 1” in the original specification of the original application is replaced with the description of “invention 1.” For example, it is described below as it is.)
[0002]
Background art
When hair is cut with cutting scissors for hairdressing and beauty, the phenomenon that the hair sandwiched between the two blades 102, 102 slides in the direction of the tip from the base end of the blade and escapes as shown in FIG. The amount of hair cut is reduced by the amount of getting up and escaping.
In addition, when the hair cut marks are aligned in a horizontal line, the cuts are not aligned with the planned horizontal line due to the slippage described above, and the cut marks are bent as shown in FIG. 35, which is inconvenient.
[0003]
However, if the hair is aligned with a straight line using cutting scissors, the straight line of the cut mark may be too conspicuous and disliked, so that the straight line may be blurred to give a natural finish.
However, even in the case of blurring such straight cut marks, straightening with cutting scissors is performed as preprocessing, and then the hair is aligned with this straight line. I have. Therefore, since two types of cutting scissors and comb scissors are used, it takes much time. In addition, since the pre-processing of straight line alignment using cutting scissors does not easily align straight lines due to slippage of the hair, it is troublesome to cut the hair many times in order to align the hair lines.
[0004]
As shown in FIG. 36, in order to eliminate the inconvenience to the slip, a V-shaped or U-shaped concave section 202 is continuously provided on the front side of the blade, so that the blade has a V-shape, U-shape or the like. There is a cut scissors 201 which is repeatedly provided with the above-mentioned waveform to form a knives blade shape. According to this, the hair is caught by the concave portion 202 of the cutting edge and does not slip, so that the above-mentioned problem caused by the slip is solved.
[0005]
The problem of hair slipping is the same with comb scissors, and hair often cannot be combed sufficiently because the hair slips off the edge of the comb blade. For this purpose, as shown in FIGS. 37 to 38, comb scissors provided with a V-shaped or U-shaped concave portion 202 having a blade edge of a comb blade are provided. The problem of slippage described above is eliminated because it is trapped and does not slip.
[0006]
However, in general, the scissors gradually lose their sharpness as they are used, so they must be used while being polished at an appropriate time. Specifically, as shown by the dashed line in FIG. It becomes. However, when the blade edge of the blade surface is polished, the concave portion 202 formed on the blade edge is scraped off, and the V-shaped or U-shaped concave portion 202 shown in FIGS. 36 to 38 disappears. Actually, even if such polishing is performed only once or twice, the concave portion 202 disappears and becomes a linear cutting edge, and as a result, there is a problem that the hair which has not slipped until now starts to slip.
[0007]
Also, in both the cutting scissors and the comb scissors, if the cutting edge is V-shaped or U-shaped, the hair is caught in the recess and becomes a bundle, and such a bundle is cut. And a rough feeling of resistance is generated and the touch is poor, and both are not preferable in terms of work.
[0008]
On the other hand, stainless steel is generally used as the material of the scissors, and the hardness is most often about 650 Hv. The higher the hardness, the higher the cutting force, the more excellent the sharpness when used, and the better the abrasion resistance. In general, the upper limit of the hardness obtained from stainless steel is about 800 Hv, but there is an ultra-hard tool material exceeding this, and a hardness of about 1000 Hv to about 1500 Hv, and further about 2000 Hv can be obtained. However, the higher the hardness of the material, the more fragile the material becomes, and the more easily the material is spilled. Therefore, the angle of the blade tip is increased to prevent spilling. However, when the tip angle of the scissors is increased, the blade is less likely to bite into the hair, and the hair becomes more slippery. For this reason, the escape of the hair when closing the scissors becomes remarkable and the function of the scissors is not fulfilled. Therefore, scissors using such a high hardness material have not been provided.
[0009]
Currently, some scissors having a hardness of about 700 Hv are provided, and such hardness is the upper limit of the hardness that functions as scissors in terms of the presence or absence of escape. If stainless steel with a hardness of 800 Hv is used as scissor material, the cutting force will be improved, and if high-hardness super hard tool material is used as the scissor material, the cutting force and abrasion resistance will be further improved. There is a problem that it becomes extremely noticeable and cannot be used in practice. In particular, if super-hard tool material is used for scissors, the scissors are expected to be about 10 times more wear-resistant than conventional scissors, and they will be ideal scissors only in terms of cutting force and abrasion resistance. Is a situation that cannot be realized.
[0010]
Therefore, desirably, the non-slip scissors of the hair are used, or the non-slip state can be maintained by polishing, and a good closing feeling without a rugged feeling can be obtained in the closing operation of the scissors. The object of the present invention is to provide scissors that can provide a natural finish if necessary and have excellent cutting force and wear resistance.
[0011]
Disclosure of the invention
For the above purpose, the present invention provides scissors in which substantially linear cut grooves or the like cut into the blade edge of the scissors are continuously provided along the blade edge, and in this case, hair of a predetermined thickness is assumed. The width of the cut groove is variously defined based on the thickness of the hair.
[0012]
Invention 1; First, as shown in FIGS. 1 to 3, the cut grooves were formed to have a width equal to or smaller than a predetermined hair thickness. In other words, the width of the cut groove is set to be smaller than or equal to the thickness of the hair. The scissors may be cut scissors or carded scissors and may have any other form.
[0013]
Thereby, if the cut groove is thinner than the thickness of the hair, the hair X is hooked on the opening 4 of the cut groove 3 as shown in FIG. Further, even if the cut groove has a width of the hair width, the cut groove is similarly caught and becomes non-slip, or, as shown in FIG. 5, 1-2 hairs X enter the cut groove and are caught in the cut groove near the cutting edge. The opening is clogged, that is, the hair is prevented from slipping.
Further, even if the scissors are polished and the blade retreats as shown by the one-dot chain line in FIG. 6, the cutting groove 3 does not disappear as shown in FIG.
[0014]
The above-described cut grooves may be formed by any method of forming (manufacturing method). For example, the cut grooves may be formed using a disk grindstone having a thickness equal to the groove width of these cut grooves. If a narrow cut groove and a thicker cut groove are to be formed, two types of disk grindstones corresponding to the cut grooves may be prepared and ground.
[0015]
Invention 2: However, if the hair is thinner than the intended thickness, it may be cut into the cut groove, and therefore, the cut groove is formed so as not to protrude from the sliding surface of the scissors. As a result, the bottom of the cut groove intersects with the sliding surface to form a blade, so that the hair entering the cut groove can be cut at the groove bottom.
Here, the sliding surface S is a surface provided on the back side of the blade of the blade, and is provided for the following reason.
In general, the cross-sectional shape of the back of the blade of the scissors has a slightly concave curved surface called a back skid P as shown in FIG. 40, but only the vicinity of the blade is a planar sliding surface S. This is to obtain the cutting action by sliding the scrubbing surfaces S of both blade edges when opening and closing the scissors. P is concavely curved. Therefore, as shown in FIGS. 11 and 12, the groove bottom 6 of the cut groove 5 is made to have a groove length that extends over the sliding surface S so as not to protrude from the sliding surface S. In order to provide the blade 7 for cutting the hair at the groove bottom 6 when the hair enters the cutting groove, the cutting groove is formed to have a length not protruding from the sliding surface S of the scissors.
Which cut groove is formed to a length that does not protrude from the sliding surface is arbitrary. For example, when the groove width is mixed, the cut groove 5 having a large width allows thin hair to enter deeply. If a blade is provided at the bottom of the groove, even if there is hair in the cutting groove, it can be cut without leaving it.
[0016]
Invention 3; As another scissors, the cut groove is formed with a groove width exceeding a predetermined hair thickness and less than twice the hair thickness. At that time, in order to form a blade at the bottom of the groove, the cut groove was set to a length that did not protrude from the sliding surface. For example, the groove width is 1. It is about several times.
Even if the groove width is wider than the thickness of the hair, the hair can be caught in the opening of the cut groove when the scissors are closed, so that the effect of preventing slippage can be obtained. This is considered that when closing the scissors, a large number of hairs concentrate on the opening of the cut groove, so that even if the opening is wider than the thickness of the hair, dense hair is caught so as to close the opening.
In addition, the scissors have a wide groove width even when the hair enters the cutting groove, so that the hair can be easily removed and the cutting groove is not clogged with hair.
[0017]
Therefore, according to the scissors, the hair can be cut in a state where the hair is not slipped by the cutting groove, and a part of the hair enters the cutting groove and is cut in the groove. At that time, the hair cut in the cut groove does not fall out of the cut groove and is not clogged, so that a smooth closing operation and reliable straight line alignment can be performed.
[0018]
Invention 4: As another scissors, the groove width is formed to a predetermined groove width in which hair enters a column of several widths. At that time, the scissors were formed in such a manner that the cut grooves were formed so as not to protrude from the sliding surface of the blade body.
According to these scissors, the width of the groove is wide, so the amount of hair caught in the cut groove increases, but since the hair is several rows in a row, there is no lumpy feeling as seen with conventional saw scissors, smooth closing Operation becomes possible.
[0019]
Therefore, the "predetermined groove width in which several hairs enter the column" is determined as follows.
First of all, the closing resistance of the scissors depends on the length of the handle of the scissors, the length of the blade body, the cutting characteristics of the blade, etc., but ultimately it is determined by the amount of hair captured in the cutting groove It will be. At that time, the width of the groove determines the amount of hair captured in the cut groove (that is, the length of the hair), which determines the resistance and smoothness of the hair when it is cut.
Therefore, the term "predetermined groove width that fits in several columns" referred to in the present application means that even if the hair caught in the cutting groove is cut, there is no feeling of resistance such as cutting a bundle of hair when using saw scissors. The groove width at which a smooth closing resistance is obtained. Therefore, as long as smoothness of the closing operation can be obtained, the groove width may be wider, for example, 0.4 mm to 0.5 mm.
[0020]
The “vertical” refers to the longitudinal direction of the cut groove 3. Since the thickness of the hair is 0.05 mm to 0.08 mm as an example, the groove width of the cut groove can be exemplified to be about 0.2 to 0.25 mm. In this case, the cut groove has three widths as an example, or Hair can be inserted in columns of about four widths.
[0021]
Invention 5: When the cut groove is formed so as not to protrude from the sliding surface, and when the groove bottom intersects the sliding surface to form a blade, the intersection is formed at an acute angle (see FIG. 17). ), Better cutting force can be obtained.
At this time, if the cutting groove is ground with a disk grindstone, the groove bottom is formed as a grinding mark, so the address of the disk grindstone with respect to the scissors may be set so that the cutting edge angle of the groove bottom becomes an acute angle. .
[0022]
Invention 6; Further, as shown in FIG. 32, the longitudinal direction of the cutting groove 3 is provided so as to be substantially perpendicular to the cutting edge Kb of the mating blade at each intersection C of the scissors.
If the groove width is not more than a predetermined hair thickness, or if the purpose is to prevent slipping, such as scissors having a thickness exceeding the predetermined hair thickness and less than twice, one end 4 of the opening of the cut groove is provided. 'Becomes an acute angle, so that the catching effect is increased and the anti-slip effect is improved.
In addition, if the groove width is a predetermined width in which the hair enters a column of several widths and is intended to cut the hair supplemented by the cut groove, the hair in the cut groove is As a result, the straight blade of the mating blade is cut down at a substantially right angle, so that the cutting force and the smoothness of the closing operation can be improved.
[0023]
Invention 7; In any of the scissors described above, the “portion where the cut groove is continuously provided” may be arbitrarily arranged along the cutting edge. That is, the cut groove may be provided continuously over the entire length of the blade, or may be provided continuously over a part of the entire length of the blade. For example, the cutting groove is continuously provided only near the tip of the blade body, and the other portion is simply a normal straight blade, or the cutting groove is continuously provided only near the base end of the blade body, or any other method. It may be connected to any part.
Further, in the continuously provided portion, the cut grooves may be provided with roughness.
[0024]
Depending on the presence or absence of such a continuously provided portion, the cutting edge of the scissors is divided into a portion where the hair is cut without slipping and a portion where the hair is cut while slipping according to the presence or absence. Since the presence or absence of such a slip is provided on the cutting edge line, the hair cut marks are not linear, but have irregularities such as wavy shapes corresponding to the arrangement of the "sequential portions", and a natural change can be obtained in the finish.
In addition, the depths of the cut grooves can be made different for each of the successively provided portions, and depending on the difference, the degree of “slip” is generated. As shown in FIG. Also, regarding one continuous portion, the pitch may be uniform within the portion, or the density may be provided at uneven intervals.
As described above, by arbitrarily arranging the "portion where the cut groove is continuously provided" on the cutting edge and also using the density of the cut groove in the connected portion, various finishes of the hair can be obtained. Alternatively, scissors may be used in which only one of the scissors is realized without using the arbitrary arrangement and the density of the cut grooves.
[0025]
Invention 8: In any of the above scissors, a substantially concave locking groove having a shallow cut may be continuously provided instead of the cut groove (FIG. 33). The locking groove does not have a shape into which hair enters like a cutting groove, but a groove which is recessed by one step from the cutting edge to lock the hair to such an extent that the hair does not slip.
[0026]
In this divisional application, a part of the invention 8 is claimed. That is, invention 1 is defined as claim 1 of the present application, invention 3 is defined as claim 2 of the present application, and scissors are cut off at that time. It is limited to scissors.
[0027]
Invention 9-10; Also, as described in the section of "Background Art", if the hardness of the material of the scissors becomes higher than a certain level, the slip of the hair becomes remarkable, and such a material having such a high hardness is used for the scissors. I couldn't do that. However, since the anti-slip effect is obtained by the present invention, it is possible to use such a high-hardness material as a scissor material. As a result, the cutting force and the abrasion resistance are improved and the anti-slipping effect is one scissor. It can be realized with, and it becomes very excellent scissors.
In particular, if a super-hard tool material is used as a material, the above-mentioned effects become more remarkable.
[0028]
Specific examples of the material include stainless steel and high-speed steel having a hardness of about 800 Hv, and examples of the super-hard tool material include powdered high-speed steel, ultra-fine particle cemented carbide, cemented carbide, cermet, ceramic sintered body, and boron nitride. (BN) sintered body and the like.
[0029]
Invention 11; The scissors of Inventions 9-10 are based on the assumption that the two blades are made of the same high-hardness material. However, in order to maintain the cutting force of the scissors, these two opposing scissors are used. A difference in the hardness of the blade material is provided between the blades, and in this case, a groove may be provided only in the blade on the high hardness side.
The reason for this is that the scissors in use are generally covered with oil from the hair, but when the sliding surfaces of the two blades with different hardness are covered with a film of hair oil, the oil is removed. It plays the role of a lubricating oil for grinding on the surface, so that when the scissors are opened and closed, the sliding surface on the high hardness side polishes the sliding surface on the low hardness side. Therefore, the scissors are polished at the same time as they are used, so that the blade on the low hardness side can keep the blade polished at all times, and the blade on the high hardness side originally has wear resistance. In addition to the above, the blade on the high hardness side is less likely to be worn because the sliding counterpart is a low hardness blade. In short, both blades are maintained in a polished state, and scissors are maintained with a good cutting force.
For example, there is a method in which one blade material is made of ceramic, a cut groove is formed in this material, and the other blade material is made of stainless steel (for example, hardness 650 Hv). Alternatively, cermet and stainless steel may be used, or any other material combination may be used. If the wear speed of the blade on the low hardness side is high, the difference in hardness between the blades is reduced, and if the wear effect on the blade on the low hardness side is small with little wear, the hardness is low. What is necessary is just to select the material to widen the difference.
[0030]
BEST MODE FOR CARRYING OUT THE INVENTION
The cutting scissors 1A shown in FIG. 1 are provided with cutting grooves 3, 3,... Having a uniform pitch over one of the two blades 2a, 2b over the entire length of the blade 2a. The cut groove 3 has a shape and an arrangement as shown in FIGS. 2 to 3, and the groove width W assumes a hair having a thickness of 0.08 mm, and is about 0.04 to 0.05 mm. It is. The groove length L is about 1.0 mm, and the pitch width between the cut grooves is about 1.0 mm.
In manufacturing the cutting scissors 1A, the cutting grooves are ground by making a disk whetstone having a thickness corresponding to the groove width W perpendicular to the blade body length, and such grinding is performed from the base end of the blade body. The cutting groove 3 is provided continuously by sequentially going to the tip. As a result, as shown in FIG. 4, the opening 4 of the cut groove 3 is formed to be sharp at a right angle, so that the effect of catching the hair X is obtained, and since the groove width is smaller than the thickness of the hair, the slip preventing effect of the cut groove 3 is obtained. Is obtained.
Even if the thickness of the hair is the same as the width of the groove, the same effect can be obtained, or the hair is prevented from slipping by being caught in the cut groove as shown in FIG. Further, when one hair is caught in the opening, another hair is caught on this one hair, and another hair is further caught on this other hair, so that the hair is chained and a good anti-slip effect is obtained.
When the cutting force is reduced by continuing to use the scissors, the blade is polished to recover the cutting force. However, even if the blade is retreated due to such polishing (the dashed line in FIG. 6 is a polished surface). The cut groove 3 is not lost, and the anti-slip effect is maintained until the end. Furthermore, even if the corner 4 of the opening of the cut groove is rounded with use, a new corner 4 can be formed in the opening by polishing the blade surface, and the anti-slip effect can be recovered.
[0031]
As another example, the scissors 1 of Invention 3 assuming 0.08 mm hair are fried. The appearance of the scissors is the same as that shown in FIG. 1. One blade 2a is provided with cutting grooves 3, 3,... Over the entire length of the blade, and the other blade 2b is provided with a straight blade. These scissors have a groove width W of about 0.1 mm, which is larger than the hair thickness (0.8 mm) and less than twice as large as that of the hair, as shown in FIG. Groove width. The sliding surface S has a width of about 1.0 mm, but the cut groove 3 has a groove length L of about 0.5 mm so as not to protrude from the sliding surface S. The cut grooves 3 have a uniform pitch width of about 0.4 mm. Further, the groove bottom 4 is provided with a blade 5 having a sharp edge angle as shown in FIG.
According to these scissors, as shown in FIG. 7, when cutting hair, an anti-slip effect is obtained at the opening of the cut groove, and slip is suppressed and straight line alignment is facilitated. In addition, some hair is cut in the cut groove while being captured, but since the hair is in a single row, it can be cut smoothly without closing resistance.
In particular, hair that has been cut off while being caught in the cut groove may remain stuck in the cut groove, but if the hair is cut continuously, the hair once caught in the cut groove is also shaken off. In this state, the hair does not easily fall out of the cut groove, and the cut groove is not clogged with hair.
As described above, the scissors feature non-slip scissors, and even when hair enters the cutting grooves, the resistance when closing the scissors is as smooth as conventional cutting scissors. These scissors do not cause clogging of hair in the grooves.
[0032]
As another example, there is a scissor according to invention 4 in which the width of the cut groove in the scissors is changed to a predetermined groove width in which the hair enters a column of several widths. As shown in FIG. 8, the scissors are provided at the cutting edge Ka of the scissors, the cutting groove 3 is set to have a groove width W of 0.2 mm, and the width is such that the hair can enter in 2-3 columns, and the groove length is also set. The length L is less than about 1.0 mm, the length of the groove bottom 4 does not protrude from the sliding surface S, and the pitch width is about 1.0 mm.
According to the scissors, while the hair is cut at the straight blade portion 6 sandwiched between the adjacent cutting grooves 3, some of the hair is supplemented by the cutting grooves and cut.
[0033]
Generally, the thickness of hair is about 0.08 mm for Oriental people and about 0.06 mm for Westerners, and especially about 0.03 mm for thin people, but for the same person, the hair thickness is almost constant. They are all in a narrow range of thickness. Therefore, for example, in the case of scissors used in Japan, the average thickness of hair of an Oriental person, 0.08 mm, is determined to be a predetermined thickness, and the above-described various scissors may be formed based on the predetermined thickness. Alternatively, not limited to this, various groove widths may be devised.
[0034]
As another example, FIGS. 9 to 10 show the cutting scissors 1B, in which only one blade 2a is provided with narrow cutting grooves 3 and thick cutting grooves 5 alternately and continuously at an equal pitch. . The narrow cut groove 3 has a groove width of about 0.04-0.05 mm, a groove length of less than about 1.0 mm, and protrudes from the sliding surface S (width is about 0.5 mm) (see FIG. 11). . Further, the thick cut groove 5 has a groove width of about 0.08 mm and a groove length of 0.3 mm-0.4 mm, which is formed so as not to protrude from the sliding surface. These are continuously provided at a pitch of 1.0 mm.
As a result, the hair Xa is caught in the narrow cut groove 3 as shown in FIG. 11 to prevent slip, and the hair Xb is also caught or clogged in the thick cut groove 5 to prevent slip. Further, since the blade 7 is formed on the bottom 6 of the thick cut groove 5, the hair is cut even when the hair enters the cut groove 5.
In addition, if the thick cut groove 5 is provided in this way, even a person with a hair thicker than the average can effectively prevent slipping.
As described above, if the width of the cut grooves is set to be different from each other in consideration of the fact that the hair thickness is gusset, it is possible to cope with individual differences in hair thickness and variations in hair thickness. In addition, by providing the cut grooves having different groove widths arbitrarily and continuously connecting them, it is possible to obtain sharpness and feel different from scissors having only a single width cut groove.
[0035]
As described above, the cutting scissors may be provided not only on the one blade body but also on both of the two blade bodies. Further, a thin cut groove may be formed on one of the blade bodies, and a thicker cut groove may be formed on the other blade body. The width of each cut groove is not limited to a fixed width, but may be wide and narrow gusset as long as the conditions described above are satisfied.
[0036]
FIGS. 13 (a)-(c), 14 (a)-(c), and FIG. 15 show examples in which both of the blades 2a and 2b are provided with cut grooves, and the contents are as follows.
In FIG. 13 (a), both blades 2a, 2b are provided with narrow cut grooves 3 having a uniform pitch. In FIG. 13 (b), one blade 2a is provided with a narrow cut groove 3 having a uniform pitch, and the other blade 2b is provided with a thick cut groove 5 having the same uniform pitch. In FIG. 13 (c), one blade 2a is provided with a narrow cut groove 3 having a narrow uniform pitch, and the other blade body 2b is provided with a narrow cut groove 3 having a wide uniform pitch. In FIG. 14 (a), both the blade bodies 2a and 2b are provided with a repetition of a thin cut groove 3 and a thick cut groove 5 at an equal pitch. In FIG. 14 (b), the thin cut grooves 3 are provided at an equal pitch, and the thick cut grooves 5 provided between the thin cut grooves 3, 3 are arranged at every third thin cut groove 3. A continuous arrangement is provided on both blade bodies 2a, 2b. FIG. 14 (c) shows that one of the blades 2b is provided with narrow cut grooves 3 at a narrow uniform pitch, and the thin cut grooves 3, which are provided between the narrow cut grooves 3, are arranged at every other thin cut groove 3. The other blade 2a is provided with a narrow cut groove 3 and a thick cut groove 5 at a wide uniform pitch. FIG. 15 shows a structure in which thick cut grooves 5a of the same length and thick cut grooves 5b longer than that are alternately provided between thin cut grooves 3 having a uniform pitch. It is provided on the blade bodies 2a, 2b.
[0037]
As another example, FIG. 16 shows the corner of the opening of the cut groove 3 so that a difference can be obtained in how the hair is caught. In addition, scissors that can be complementarily cut by the cut groove can provide a difference in the manner of supplementation.
[0038]
FIG. 17 is a cross-sectional view taken along the line BB of FIG. 14 (a) shown as an embodiment according to invention 5, in which the groove bottom 6 of the thick cut groove 5 is formed so as to hang on the sliding surface S on the back of the blade. The groove bottom 6 is provided with a blade 7 having a sharp edge angle, and an angle in the range of 15 ° -89 ° is conceivable. Thus, hair that has entered the bottom of the thick cut groove can be cut.
As another example, the cutting scissors 1C shown in FIG. 18 have cutting grooves provided at a uniform pitch only in the tip 2-3 cm of one blade body 2a. Is used.
[0039]
As another example, the cutting scissors 1D shown in FIG. 19 have thin cutting grooves 3 and thick cutting grooves 5 having the same length alternately provided only on one blade body 2a. However, the shape of the cutting edge line is formed so as to protrude in the vicinity of the center of the cutting edge and to be at a position retracted from the hamachi 8 (reference numeral K in the drawing) at the base end. Therefore, when the scissors are closed, the angle of intersection of both cutting edges can be maintained at almost the same angle regardless of where they cross from the base end to the tip, and as a result, the escape properties of hair as cutting scissors are compared from the base end to the tip The slits are provided at regular intervals, but the anti-slip effect is relatively uniform from the base end to the front end, and scissors with good usability can be obtained.
[0040]
As another example, FIG. 20 shows an example of the cutting scissors 1E of Invention 7, in which the continuously provided portions Y of the cutting grooves 3 are arranged at three places along the cutting edge, that is, the cutting grooves 3 are continuously provided. The portion Y and the straight blade portion Z having no cut groove are repeated. The cut groove 3 is provided with a rough portion near the base end in one continuous portion Y and a density gradually increasing toward the front end. When the cutting scissors 1E are used, the cut hair is finished in a waveform Q as shown in FIG. 21, and a feeling different from straight line alignment is obtained. Other than that, the cut grooves may have any density.
[0041]
As another example, FIG. 22 is also an example of the cutting scissors 1F of Invention 7, in which a group of continuously provided portions R in which the cutting grooves 3 are provided roughly from the base end and become gradually denser toward the front end. Repeated three times over the entire length of the body.
[0042]
As another example, a comb scissors 1G shown in FIG. 23 is one in which the above-described invention is applied to comb scissors, in which two comb blades 20 and a bar blade 30 are pivotally connected. A wide comb blade 21 and a narrow comb blade 22 are provided alternately. The intervals between the comb blades 21 and 22 are equal. The wide comb blade 21 is provided with several cut grooves 3, and the narrow comb blade 22 is not provided with a cut groove. The cut groove 3 has a shape and arrangement as shown in FIGS. 24 to 25. The groove width W is set to about 0.04 to 0.05 mm, and the groove length L is set to about 1.0 mm or less. is there.
The comb scissors 1G also become comb scissors with less escape of hair due to the cut grooves provided. Further, when closing the scissors, there is no rugged resistance when cutting the bundle of hair caught in the concave portion of the cutting edge of the comb blade as in the conventional comb scissors, and a smooth closing operation can be performed.
The comb blade may not be provided with a cut groove but may be provided with a cut groove at the cutting edge of a bar blade body.
[0043]
As another example, the comb scissors 1H shown in FIGS. 26 to 27 have two blades both of which are comb blades 40 and 50. The comb blades 40, 50 are formed such that the comb blades 41, 42; 51, 52 are formed concentrically around the pivot, and the wide comb blades 41, 51 and the narrow comb blades 42, 52 are mutually connected. They are provided to face each other. However, the width (length from the peak to the cutting edge) of the comb blade body 50 serving as a moving blade is narrower than the width of the comb blade body 40 serving as a static blade, so that the comb blades 51 and 52 of the moving blade are static blades. Are formed shorter than the comb blades 41 and 42 of FIG. The spacing between the comb blades is equal. The cut groove 3 is provided on the side of the comb blade body 40 serving as a static blade. The wide comb blade 41 is provided with several cut grooves 3, and the narrow comb blade 42 is provided with one cut groove 3. Things.
[0044]
As another example, FIG. 28 shows an example in which the cut grooves shown in FIGS. 10 to 12 are applied to comb scissors, and narrow cut grooves 3 and thick cut grooves 5 are alternately formed at a uniform pitch on a comb blade 21. The point, the width and length of each cut groove, the sliding and stopping effect are the same, and the same applies to the point where the hair is cut even if the hair enters by forming the blade 7 on the groove bottom 6 of the thick cut groove 5.
[0045]
As another example, an example in which the invention of Invention 7 is applied to carding scissors is as follows. First, the arbitrary arrangement of the continuous portion of the cutting groove is realized by appropriately arranging the comb blade provided with the cutting groove and the conventional comb blade without the conventional straight cutting edge without providing the cutting blade. . Regarding the density of the cut grooves, a plurality of cut grooves may be provided for each comb blade, and the density of the cut grooves may be changed for each comb blade. Alternatively, in the case of a wide comb blade (for example, 1 cm in width), the density may be provided in this single comb blade.
Alternatively, when the comb scissors are composed of a bar blade and a comb blade, the comb blade is left as it is with a conventional straight blade, and the comb blade is connected to the bar blade side like the above-mentioned cut scissors. Arbitrary arrangement of the portions, or coarse and dense cut grooves in the continuous portion may be provided.
According to the manner of providing such cut grooves, the comb scissors are divided into a comb blade which "cuts without slipping" and a comb blade which "cuts while sliding". Since such a difference in slip is provided on the blade edge line, the amount of combing of the hair differs at each point of the blade body, and a natural change can be obtained in the finish of combing the hair.
[0046]
In the scissors 1A-1H described above, the cutting grooves are cut at substantially right angles to the longitudinal direction of the blade body, but as shown in FIGS. Alternatively, the cut groove may be cut at a predetermined inclination angle. As an example, at each intersection C at the time of closing the scissors, respective cutting grooves may be provided in a direction perpendicular to the cutting edge line of the mating blade bodies 2b, 30. Alternatively, it may be tilted more, or conversely, may be tilted slightly. As a result, as shown in FIG. 31, one end 4 'of the opening of the cut groove has an acute angle, so that the catching effect is increased and the slip prevention effect is improved. Also, in order to cut the cut groove obliquely, the width W of the opening is set. ₀ Is wider than the groove width W, and also in this respect, the anti-slip effect is improved. Further, if the hair has a large width of the cut groove, the hair easily enters the cut groove.
In particular, when the width of the hair is several, the hair is planned to be caught and cut by the cut groove, so that the hair is easily caught by the cut groove as shown in FIG. The hair that has entered the groove 3 is arranged in a column that is substantially perpendicular to the cutting edge of the mating blade body 2b, so that the hair can be cut well.
[0047]
In addition, the groove width, the mixed arrangement of the narrow cut grooves and the thick cut grooves, the pitch, the groove length, the presence or absence of the cut grooves, and the density of the cut grooves may be freely determined.
Note that the above-described invention can also be applied to a scissor of a replaceable blade type. The replaceable blade type scissors are provided with the blade portion of the scissor as a separate replaceable blade from the scissor body, and the form of the replaceable blade itself varies depending on the mounting method. The scissors according to the above invention can be obtained by forming scissors, which are components of the above-described invention, on the spare blade and attaching them to the body of the scissors.
[0048]
In the scissors described above, instead of the substantially straight cut groove, a substantially concave lock 3 ′ having a shallow cut may be continuously provided as shown in FIG. 33. In this case, the lock hole 3 ′ The opening width corresponds to the groove width of the cut groove described above. Although it is difficult for the non-slip groove 3 to be caught by the thin notch groove 3 assuming an average thickness and the slip prevention does not work sufficiently, even in such a case, the non-slip groove 5 is caught by the other thick notch groove 5 to prevent slippage. The effect is obtained. In this case, the locking groove 3 'disappears relatively quickly by polishing, but it is useful to use it for disposable inexpensive scissors, or it can be used for a replaceable blade type scissors. Although the manufacturing method may be any method, there is a method in which the locking groove is simultaneously pressed if the blade is pressed from the blade material. Alternatively, a locking groove may be added to the blade body that has reached the completion stage.
[Brief description of the drawings]
FIG. 1 is a view of a cutting scissor of the present invention, in which cut grooves are formed in one blade at an equal pitch.
FIG. 2 is a partially enlarged view of FIG.
FIG. 3 is a partially enlarged view of a blade body for showing a cutting groove.
FIG. 4 is an explanatory view of a state in which hair is caught by an opening of a cut groove and becomes non-slip.
FIG. 5 is an explanatory diagram of a state in which hair enters a cutting groove.
FIG. 6 is a cross-sectional view taken along the line AA of FIG. 3, and explains that the cut grooves are not lost even by polishing.
FIG. 7 is an explanatory view of a state where hair enters the groove width with a margin when the cut groove has a groove width larger than the hair thickness and less than twice.
FIG. 8 is an explanatory view of a state in which a cut groove is formed to a predetermined groove width in which hair enters a column of several widths, and hair is cut in the cut groove.
FIG. 9 is a view of another cutting scissors of the present invention, in which narrow cut grooves and thick cut grooves are alternately repeated at a uniform pitch.
FIG. 10 is a partially enlarged view of FIG. 9;
FIG. 11 is a partially enlarged view of the blade body of FIG. 10 and illustrates how the thin cut groove 3 and the thick cut groove 5 relate to the hair thickness.
FIG. 12 is a diagram showing how the narrow cut groove 3 and the thick cut groove 5 in FIG.
FIG. 13 is a diagram showing an example of a continuous arrangement of cut grooves.
FIG. 14 is a diagram showing an example of a continuous arrangement of cut grooves.
FIG. 15 is a diagram showing an example of a continuous arrangement of cut grooves.
FIG. 16 is a diagram showing an example in which the corner of the opening of the cut groove is taken.
FIG. 17 is a sectional view taken along the line BB of FIG. 14 and having a sharp bevel angle provided at the bottom of the cutting groove.
FIG. 18 is a diagram in which a cutting groove is provided only in a tip portion of a blade body.
FIG. 19 is a view of yet another cutting scissors of the present invention.
FIG. 20 shows cutting scissors in which a portion Y provided with a continuous cut groove and a straight blade portion Z having no cut groove are repeated, and coarse and dense combs of the groove are provided in one continuous cut groove. FIG.
FIG. 21 is a diagram illustrating a finish by the cutting scissors shown in FIG. 20;
FIG. 22 is a view of cut scissors in which sections in which cut grooves gradually become denser from rougher than the proximal end toward the distal end are repeated.
FIG. 23 is a view of a comb scissors according to the present invention, in which cut grooves are formed in one blade at an equal pitch.
FIG. 24 is a partially enlarged view of FIG. 23.
FIG. 25 is a partially enlarged view of a blade body for showing a cutting groove.
FIG. 26 is a view of another comb scissors of the present invention.
FIG. 27 is a partially enlarged view of FIG. 26;
FIG. 28 is a partially enlarged view of a state in which a thin cutting groove and a thick cutting groove are alternately repeated at an equal pitch on a comb blade of a comb scissors.
FIG. 29 is a view of the cutting scissors in which the direction of the cutting groove is inclined so as to be perpendicular to the cutting edge of the mating blade body 2b when the scissors are closed.
FIG. 30 is a view of carding scissors in which the direction of the cut groove is inclined as in FIG. 29.
FIG. 31 is an enlarged view of the cut groove of FIGS. 29-30.
FIG. 32 is a diagram in the case where the inclined cut grooves are set to several hair widths.
FIG. 33 is a view in which a substantially concave locking groove having a shallow cut is provided in place of the cut groove.
FIG. 34 is a view of conventional cutting scissors, showing how hair slips.
FIG. 35 is an explanatory diagram of how hair cut marks are not aligned in a straight line.
FIG. 36 is a view of saw scissors, which is a kind of cutting scissors and has a concave portion on a cutting edge.
FIG. 37 is a diagram of a comb blade having a U-shaped concave portion as a blade edge.
FIG. 38 is a diagram of a comb blade having a V-shaped concave portion as a blade edge.
FIG. 39 is a view for explaining that the concave portion of the cutting edge disappears by polishing in the scissors shown in FIGS. 36 to 38.
FIG. 40 is a diagram for explaining a sliding surface S on the back of the blade of scissors.

Claims (2)

A cutting scissor in which the blade is a straight blade, and a substantially concave locking groove having a shallow cut into which a hair does not enter by being formed in a groove width smaller than a predetermined hair thickness is continuously provided on the straight blade. Cut scissors characterized by that. A cutting scissor whose blade is a straight blade, wherein the groove is formed to have a groove width that is more than a predetermined hair thickness and less than twice so that a shallow, substantially concave locking groove into which the hair does not enter is formed on the straight blade. Cut scissors characterized by being installed in a row.

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