JP2009005816A - Scissors - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide scissors allowing the smooth escape of hair entering into a hollow part of a comb tooth-like blade when cutting the hair. <P>SOLUTION: The scissors 100 consists of a first scissor forming member 110 having a cutting part 111 with a straight blade, and a second scissor forming member 120 having opening parts 140 formed in a line and having a cutting part 121 of a comb tooth shape. Each of the opening part 140 is so formed that an open area 142 whose opening width becomes gradually larger as its being separated from a blade face opening part 141 formed on a blade face 123, and the base of the opening part 140 is formed with a projection part 143 projecting toward the blade face opening part 141. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to scissors, and in particular to hair scissors.

  For hairdressing, hair is cut using hairdressing scissors (both blades are straight blade scissors) and then used for final finishing.

  In general, in the scissors, one blade is a straight blade (or a flat blade) and the other blade is comb-like.

  The comb-shaped blade has a blade portion and a hollow portion formed continuously, and depending on the hollow portion, the hair is not cut, only by the blade portion, Hair is cut. For this reason, it is possible to comb the hair by using the scissors for finishing hair. That is, by using the scissors, it becomes possible to mix short hairs.

  An example of the scissors is described in Japanese Patent Application Laid-Open No. 2007-20976.

  In the scissors described in the publication, a hollow blade (reference numeral 21 in FIG. 2 of FIG. Is formed).

By providing such a hollow blade, it is easy to get hair on the blade edge, so that the hair cut rate can be stabilized.
JP 2007-20976 A

  However, according to the applicant's many years of research, the biggest problem with the scissors is that the blade has a comb-teeth shape, rather than whether or not the blade is likely to have hair. It turned out whether the hair that entered the cavity of the blade is smooth or not.

  In conventional scissors, the hollow portion of the comb-shaped blade, including the scissors described in the above publication, is formed with a substantially constant width.

  For this reason, when the hair is cut, the hair remaining without being cut enters each cavity portion at a time, so it is difficult to continue to cut the hair without the hair coming out from the cavity portion easily. there were.

  The present invention has been made in view of such problems, and the hair that has entered the cavity portion of the blade that is comb-shaped when the hair is cut does not concentrate in one place and can be smoothly removed. The aim is to provide scissors that can be made possible.

  Hereinafter, means for solving the above-described problems will be described using reference numerals used in the “Embodiments of the Invention”. These reference signs are added only to clarify the correspondence between the description of the “claims” and the description of the “embodiments of the invention”. It should not be used to interpret the technical scope of the invention described in.

  In order to achieve the above object, according to the present invention, the blade part (111, 121) is provided on one side and the handle part (112, 122) is provided on the other side with the rotation center point (130) as the center. A pair of scissors forming the pair of scissors forming the pair of scissors forming the pair of scissors forming the pair of scissors forming the pair of scissors. One (110) blade part (111) of the members (110, 120) is a straight blade, and the other (120) blade part (121) has openings (140) formed in a row, Each of the openings (140) has an opening region (142) formed such that the opening width increases as the distance from the blade surface opening (141) formed on the blade surface (123) increases. At the bottom of the opening (140) Providing scissors (100) protruding portion protruding toward said the blade surface openings (141) (143) is formed.

  Each of the openings (140) has, for example, an inverted heart shape.

  The bottom surface of the opening (140) is preferably formed as an inclined surface (145) that is inclined so as to become lower from the side in contact with the other scissor forming member.

  The length of the blade surface opening (141) is preferably as long as it is closer to the rotation center point (130).

  The length of the blade surface opening (141) can be set to be the same for each of the plurality of blade surface openings (141). In this case, it is preferable that the plurality of blade surface openings (141) closer to the rotation center point (130) have a longer length of the blade surface opening (141).

  The blade surface (123) between the openings (140) is preferably formed to be inclined toward the tip of the scissors (400).

  When cutting hair, the hair remaining without being cut enters the opening region through the blade surface opening. In this case, since the opening area has an opening width that increases as the distance from the blade surface opening increases, the hair does not clog with the blade surface opening, and the hair moves smoothly into the opening area. There is no clogging even inside the open area. The hair that has moved to the inside of the opening area advances toward the back (bottom) of the opening. The hair that has advanced toward the back (bottom side) of the opening is eventually divided into two parts by the protrusions formed on the bottom of the opening and dispersed in the left and right regions of the protrusions.

  In conventional shearing scissors, the opening consists of an elongated hole with a substantially constant width, so that the hair tends to clog. Therefore, when pulling out the scissors, It was often difficult to remove scissors.

  On the other hand, according to the scissors according to the present invention, the opening region has an opening width that increases as the distance from the blade surface opening portion increases, so that the hair is not clogged inside the opening region. Since the hair is bisected by the protrusion formed at the bottom of the opening, the hair is not clogged in one place and is moderately dispersed. For this reason, unlike the conventional scissors, the scissors can be smoothly extracted without the hair getting entangled with the scissors.

(First embodiment)
FIG. 1 is a plan view of the scissors 100 according to the first embodiment of the present invention.

  The scissors 100 according to the present embodiment includes a pair of scissors forming members, that is, a first scissors forming member 110 and a second scissors forming member 120.

  Both the first scissor forming member 110 and the second scissor forming member 120 are made of steel.

  A hole (not visible in FIG. 1) is formed in the first scissors forming member 110 at a position serving as a rotation center point, and a blade portion 111 is provided on one side of the hole serving as the rotation center point. A ring 112 as a handle portion is formed on the other side.

  The second scissors forming member 120 has a hole (not visible in FIG. 1) at a position serving as a rotation center point, and a blade portion 121 is provided on one side of the hole serving as the rotation center point. A ring 122 as a handle portion is formed on the other side.

  The first scissor forming member 110 and the second scissor forming member 120 are rotatably connected to each other by passing the rotating shaft 130 through holes formed at the rotation center point.

  The first scissors forming member is rotated by passing the fingers through the rings 112 and 122 as the handle and rotating the first scissors forming member 110 and the second scissors forming member 120 around the rotation shaft 130. The blades 111 and 121 of the 110 and the second scissor forming member 120 can be in a closed state (shown in FIG. 1) and in an open state.

  The blade portion 111 of the first scissor forming member 110 is formed as a straight blade (flat blade).

  On the other hand, the blade part 121 of the second scissor forming member 120 is formed in a comb shape.

  That is, the scissors 100 according to the present embodiment are so-called scissors. Usually, a ring finger is inserted into the ring 112 of the first scissor forming member 110 and a thumb is inserted into the ring 122 of the second scissor forming member 120. When the hair is cut, the first scissors forming member 110 is held almost stationary, and only the thumb is repeatedly moved so that each blade of the first scissors forming member 110 and the second scissors forming member 120 is moved. The parts 111 and 121 are opened and closed to cut the hair. In this way, the blade portion 111 of the first scissor forming member 110 is held stationary, and only the blade portion 121 of the second scissor forming member 120 moves, so that the blade portion of the first scissor forming member 110 is moved. 111 is a “static blade”, and the blade portion 121 of the second scissor forming member 120 is sometimes called a “moving blade”.

  FIG. 2 is a plan view in which the blade portion 121 of the second scissor forming member 120 is partially enlarged.

  As shown in FIG. 2, the blade portions 121 of the second scissor forming member 120 have openings 140 formed in a row at regular intervals in the length direction L thereof. That is, the blade portion 121 of the second scissor forming member 120 has a comb-teeth shape since the plurality of openings 140 are formed.

  Each of the openings 140 has a blade surface opening 141 formed on the blade surface 123 of the blade 121, and further has an opening region 142 having the blade surface opening 141 as an opening end. In other words, the opening region 142 has the blade surface opening 141 as a tip, and is perpendicular to the width direction W of the blade 121 of the second scissor forming member 120 (the length direction L of the blade 121 of the second scissor forming member 120). Direction) from the blade surface 123 to a position of length WA.

  The opening region 142 is formed such that the opening width (the length in the length direction L of the blade portion 121 of the second scissor forming member 120) increases as the distance from the blade surface opening portion 141 increases.

  For example, as shown in FIG. 2, when the opening widths of the opening region 142 at the positions W1 and W2 from the blade surface 123 are L1 and L2, respectively, L1 <L2.

  A projection 143 that protrudes toward the blade surface opening 141 is formed on the bottom side of the opening 140.

  The inner side surface 144 that forms the opening region 142 forms a gentle curve. Therefore, each of the openings 140 has an inverted heart shape (a shape obtained by turning the heart shape upside down) as a whole.

  The scissors 100 according to the present embodiment having the above-described structure have the following functions.

  As shown in FIG. 2, when the hair is cut, the hair 150 that remains without being cut enters the opening region 142 through the blade surface opening 141. In this case, since the opening area 142 has an opening width that increases as the distance from the blade surface opening 141 increases, the hair 150 is not clogged by the blade surface opening 141, and the hair 150 smoothly fills the opening area 142. While moving to the inside, the inside of the opening region 142 is not clogged.

  The hair 150 that has moved to the inside of the opening region 142 proceeds toward the back (bottom) of the opening 140. The hair 150 that has advanced toward the back (bottom side) of the opening 140 is eventually divided into two by the protrusions 143 formed on the bottom of the opening 140 and dispersed in the left and right regions of the protrusions 143.

  In the conventional shearing scissors, the opening 140 is composed of an elongated hole having a substantially constant width, so that the hair is easily clogged.Therefore, when pulling the scissors, Often it was difficult to pull out the scissors.

  On the other hand, according to the scissors 100 according to the present embodiment, the opening region 142 has an opening width that increases as the distance from the blade surface opening 141 increases, and thus the hair 150 is clogged inside the opening region 142. In addition, since the hair 150 is divided into two by the protrusion 143 formed at the bottom of the opening 140, the hair 150 is not clogged in one place and is appropriately dispersed in two. As described above, the hairs 150 are not concentrated in one place and are dispersed, so that unlike the conventional scissors, the hairs 150 can be smoothly extracted without being entangled with the scissors 100.

  The scissors 100 according to the present embodiment are not limited to the above structure, and various modifications can be made.

  For example, in the scissors 100 according to the present embodiment, the inner side surface 144 of the opening region 142 is curved, but is not limited to a curved line and may be straight or stepped. Alternatively, a combination of a curve and a straight line can be used.

  Furthermore, in the scissors 100 according to the present embodiment, the opening 140 has a reverse heart shape, but the shape of the opening 140 is not limited to the reverse heart shape. As long as the shape has an opening width that increases as the distance from the blade surface opening 141 increases, the opening 140 can take an arbitrary shape.

(Second embodiment)
FIG. 3 is a longitudinal sectional view of the second scissor forming member 120 in the scissors 200 according to the second embodiment of the present invention.

  In the scissors 200 according to the present embodiment, as shown in FIG. 3, the bottom of the opening 140 in the second scissor forming member 120 is formed as an inclined surface 145. That is, the bottom side of the opening 140 in the second scissor forming member 120 is higher on the inner side (side in contact with the first scissor forming member 110) and lower on the outer side (side opposite to the first scissor forming member 110). It is formed as follows.

  Thus, by forming the bottom of the opening 140 in the second scissor forming member 120 as the inclined surface 145, the hair 150 can be more smoothly removed from the opening 140.

(Third embodiment)
In the scissors 100 and 200 according to the first and second embodiments, the length of the blade surface opening 141 of each opening 140 is constant.

  On the other hand, in the scissors according to the third embodiment of the present invention, the length of the blade surface opening 141 of each opening 140 is set so as to increase as it approaches the rotation shaft 130.

  Since the amount of the hair 150 increases as it is closer to the front, that is, closer to the rotation shaft 130, the length of the blade surface opening 141 is increased in the opening 140 closer to the rotation shaft 130. The hair 150 can be smoothly moved into the opening 140.

  It is also possible to divide the opening 140 into a plurality of groups and change the length of the blade surface opening 141 for each group.

  FIG. 4 is a partial plan view of the second scissor forming member 120 in the scissors 300 according to the third embodiment of the present invention.

  As shown in FIG. 4, seven openings 140 are formed in the second scissor forming member 120 in the scissors 300 according to the present embodiment.

  For example, among these seven openings 140, if the three openings 140 on the front end side are the first group G1, and the remaining four openings 140 are the second group G2, the second group G2 The lengths of the respective blade surface openings 141 of the four openings 140 belonging to are set longer than the lengths of the respective blade surface openings 141 of the three openings 140 belonging to the first group G1.

  For example, the length of each blade surface opening 141 of the three openings 140 belonging to the first group G1 is 0.6 mm, and each blade surface opening of the four openings 140 belonging to the second group G2. The length of the part 141 is 0.88 mm.

  Further, the number of groups when the plurality of openings 140 are grouped is arbitrary. The number of groups can be 2 or 3 or more.

  For example, when the seven openings 140 shown in FIG. 4 are divided into three groups, as shown in FIG. 4, the two openings 140 on the front end side are divided into the first group Ga and the center. The three openings 140 can be a second group Gb, and the remaining two openings 140 can be a third group Gc.

(Fourth embodiment)
FIG. 5 is a partial plan view of the second scissor forming member 120 in the scissors 400 according to the fourth embodiment of the present invention.

  In the scissors 400 according to the present embodiment, the blade surfaces 123 between the openings 140 are formed to be inclined in the length direction of the scissors 400. Specifically, the blade surface 123 between the openings 140 is formed so as to be inclined toward the tip of the scissors 400.

  The angle of inclination of each blade surface 123 is constant. That is, the blade surfaces 123 between the openings 140 are parallel to each other.

  If the blade surface 123 between the openings 140 is a flat blade, the hair 150 may be cut more than necessary. Like the scissors 400 according to the present embodiment, by forming the blade surfaces 123 between the openings 140 as inclined blade surfaces, the hair 150 can be forcibly pushed outward, and the hair is more than necessary. It can be prevented from being cut.

It is a top view of scissors concerning a first embodiment of the present invention. It is the top view which expanded partially the blade part of the 2nd scissors formation member in the scissors which concern on 1st embodiment of this invention. It is a longitudinal cross-sectional view of the 2nd scissor formation member in the scissors which concern on 2nd embodiment of this invention. It is a partial top view of the 2nd scissor formation member in the scissors which concern on 3rd embodiment of this invention. It is a partial top view of the 2nd scissor formation member in the scissors which concern on 4th embodiment of this invention.

Explanation of symbols

100 Scissors 110 according to the first embodiment of the present invention First scissors forming member 111 Blade portion 112 Ring 120 Second scissors forming member 121 Blade portion 122 Ring 123 Blade surface 130 Rotating shaft 140 Opening portion 141 Blade surface opening Part 142 Opening region 143 Protruding part 145 Inclined surface 150 Hair 200 Scissors 300 according to the second embodiment of the present invention Scissors 400 according to the third embodiment of the present invention Scissors according to the fourth embodiment of the present invention

Claims (6)

A pair of scissors forming members each having a blade portion on one side and a handle portion on the other side centered about the rotation center point are connected to each other at the rotation center point. Scissors formed by
One blade portion of the pair of scissors forming members is a straight blade, and the other blade portion has openings formed in a row,
Each of the openings has an opening region formed such that the opening width increases as the distance from the blade surface opening formed on the blade surface increases, and the bottom surface of the opening includes the blade surface. The scissors in which the protrusion part which protrudes toward an opening part is formed.   The scissors according to claim 1, wherein each of the openings has an inverted heart shape.   3. The scissors according to claim 1, wherein a bottom surface of the opening is formed as an inclined surface that is inclined so as to be lowered outward from a side in contact with the other scissor forming member.   The scissors according to any one of claims 1 to 3, wherein a length of the blade surface opening is greater as it is closer to the rotation center point.   The length of the blade surface opening is set to be the same for each of the plurality of blade surface openings, and the length of the blade surface opening is larger as the plurality of blade surface openings closer to the rotation center point. The scissors according to claim 1, wherein the scissors are ones.   The scissors according to any one of claims 1 to 5, wherein the blade surface between the openings is formed so as to be inclined toward the tip of the scissors.

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