JP6810445B2 - Scissors - Google Patents

Description

The present invention relates to scissors, particularly to scissors used to cut to a defined width.

Heat sealing technology is widely used in packaging various products. This is a technique for sealing a film made of plastic or the like by heating and heat-sealing.

By the way, even after sealing, if sufficient strength is not maintained, a completely sealed state cannot be realized, which is not preferable. Therefore, the strength test of the packaging bag after heat sealing is defined in the JIS standard of Non-Patent Document 1 below.

JIS Z 0238

According to the standard of Non-Patent Document 1, the width of the target test piece is defined as 15.0 ± 0.1 mm, and it is preferable to use a test piece having a width having a slight error centered on at least 15.0 mm. Has been done.

In conducting a strength test based on this standard, a method of applying a ruler to a film and cutting it out with a cutter knife is generally performed. When the test piece is prepared by this method, the width of the test piece inevitably varies. Previously, this degree of variability was considered to be acceptable. There are two reasons for this.

Normally, a properly heat-sealed packaging material exhibits a sufficiently high value (for example, more than twice) with respect to the heat seal strength required in each case listed as a reference value in the standard. The value of the seal strength is considered to be approximately proportional to the width of the test piece. Therefore, in practice, a slight variation in width is acceptable.

However, the above circumstances should be considered only when the difference between the required strength and the test result is sufficiently large. That is, when the test result is close to the required strength, the actual strength may be lower than the required strength. That is, from the viewpoint of correctly evaluating the seal strength, it is preferable to prepare a test piece having a width required as much as possible and measure the strength using the test piece.

Also, cutting the film with a ruler and a cutter is troublesome in terms of work. On the other hand, when an attempt is made to cut a film using ordinary scissors, the film is easily deformed at the time of cutting, and it is difficult to cut the film with the correct width. That is, when the scissors are put into the film, the width of the film located at the tip of the scissors and the width of the film located at the root of the scissors may be different.

In view of the above problems, an object of the present invention is to provide scissors capable of cutting a predetermined width with high accuracy.

The scissors according to the present invention
The first blade, the second blade, the third blade, and the fourth blade with blades formed at each end,
A first connecting portion that rotatably connects the first blade and the second blade,
A second connecting portion that rotatably connects the third blade and the fourth blade,
A first grip portion connected to the second blade and the third blade at an end opposite to the side on which the blade is formed.
A second grip portion connected to the first blade and the fourth blade at an end opposite to the side on which the blade is formed.
It is arranged at a position between the first connecting portion and the second connecting portion and the first gripping portion, and is connected to the second blade and the third blade in a direction facing each other. With the first spacer part formed like
It is arranged at a position between the first connecting portion and the second connecting portion and the second gripping portion, and is connected to the first blade body and the fourth blade body in a direction facing each other. With the second spacer part formed like
It is arranged on the side opposite to the first grip portion with reference to the first connecting portion and the second connecting portion, and is connected to the second blade and the third blade in a direction facing each other. With a third spacer formed to
The second blade and the third blade are arranged inside the first blade and the fourth blade.
The region where the blade is formed on the second blade and the region where the blade is formed on the third blade are opposed to each other.
The region where the blade is formed on the first blade and the region where the blade is formed on the fourth blade are both located on the outside.

In addition, the scissors according to the present invention
The first blade, the second blade, the third blade, and the fourth blade with blades formed at each end,
A first connecting portion that rotatably connects the first blade and the second blade,
A second connecting portion that rotatably connects the third blade and the fourth blade,
A first grip portion connected to the second blade and the third blade at an end opposite to the side on which the blade is formed.
A second grip portion connected to the first blade and the fourth blade at an end opposite to the side on which the blade is formed.
It is arranged at a position between the first connecting portion and the second connecting portion and the first gripping portion, and is connected to the second blade and the third blade in a direction facing each other. With the first spacer part formed like
It is arranged at a position between the first connecting portion and the second connecting portion and the second gripping portion, and is connected to the first blade body and the fourth blade body in a direction facing each other. With the second spacer part formed like
The first connecting portion and the second connecting portion are arranged on the opposite side of the second grip portion with reference to the first connecting portion and the second connecting portion, and are connected in a direction facing each other with respect to the first blade body and the fourth blade body. With a third spacer formed to
The second blade and the third blade are arranged inside the first blade and the fourth blade.
The region where the blade is formed on the second blade and the region where the blade is formed on the third blade are opposed to each other.
The region where the blade is formed on the first blade and the region where the blade is formed on the fourth blade are both located on the outside.

When the third spacer portion is formed so as to be connected to the second blade body and the third blade body in a direction facing each other, the third spacer portion is the first connecting portion and the said. It may be provided at a plurality of locations apart from the position of the second connecting portion in the direction toward the tip of the second blade and the third blade. Similarly, when the third spacer portion is formed so as to be connected to the first blade body and the fourth blade body in a direction facing each other, the third spacer portion is connected to the first blade body. It may be provided at a plurality of positions apart from the positions of the portion and the second connecting portion in the direction toward the tips of the first blade and the fourth blade.

In the second spacer portion, the second spacer portion is arranged rather than the distance between the first blade body and the fourth blade body at the positions of the first connecting portion and the second connecting portion. The length is set so that the distance between the first blade and the fourth blade at the position is widened.

According to the scissors of the present invention, it is possible to cut a predetermined width with high accuracy.

It is a schematic perspective view of the scissors which concerns on one Embodiment. It is a schematic plan view of the scissors which concerns on one Embodiment. It is a schematic front view of the scissors which concerns on one Embodiment. It is a schematic drawing which shows the state of cutting a test piece with scissors. It is a schematic perspective view of the scissors which concerns on another embodiment.

An embodiment of the scissors according to the present invention will be described with reference to the drawings. In the following drawings, the dimensional ratio on the drawing and the actual dimensional ratio do not always match.

FIG. 1 is a schematic perspective view of an embodiment of scissors according to the present invention. FIG. 2 is a schematic plan view of the scissors according to the present invention. FIG. 3 is a schematic front view of the scissors according to the present invention. In each drawing, for convenience of illustration, elements that are hidden and not displayed are indicated by reference numerals in parentheses.

The scissors 1 shown in FIGS. 1 to 3 have a first blade body 10, a second blade body 20, a third blade body 30, and a fourth blade body 40. A blade 11 is provided at the end of the first blade body 10. A blade 21 is provided at the end of the second blade body 20. A blade 31 is provided at the end of the third blade body 30. A blade 41 is provided at the end of the fourth blade body 40.

The scissors 1 relatively rotate the first connecting portion 3 that connects the first blade body 10 and the second blade body 20 so as to be relatively rotatable, and the third blade body 30 and the fourth blade body 40. A second connecting portion 5 for connecting as possible is provided. The second blade body 20 is arranged inside the first blade body 10, and the third blade body 30 is arranged inside the fourth blade body 40.

FIG. 2 corresponds to a plan view of the scissors 1 when viewed from the first connecting portion 3 side. That is, FIG. 2 shows the first blade body 10 and the second blade body 20, and the second connecting portion 5, the third blade body 30, and the fourth blade body 40 appear on the back side of the paper surface. Not shown.

The blade 11 of the first blade body 10 is provided on the surface of the first blade body 10 and on the surface opposite to the second blade body 20, that is, on the outer surface. The blade 21 of the second blade 20 is provided on the surface of the second blade 20 and on the surface opposite to the first blade 10, that is, on the surface facing the third blade 30. There is. The blade 31 of the third blade body 30 is provided on the surface of the third blade body 30 and on the surface opposite to the fourth blade body 40, that is, the surface on the side facing the second blade body 20. There is. The blade 41 of the fourth blade body 40 is a surface of the fourth blade body 40 and is provided on a surface opposite to the third blade body 30, that is, an outer surface.

The scissors 1 have a first grip portion 51 and a first grip portion 51 connected to the second blade body 20 and the third blade body 30 at an end portion opposite to the side on which the blades (21, 31) are formed. It has a second grip portion 52 connected to the first blade body 10 and the fourth blade body 40 at an end portion on the side opposite to the side on which the blades (11, 41) are formed.

The scissors 1 are arranged at positions between the connecting portions (3, 5) and the first gripping portion 51, and are connected to the second blade body 20 and the third blade body 30 in directions facing each other. It has a first spacer portion 61 formed.

The scissors 1 are arranged at positions between the connecting portions (3, 5) and the second gripping portion 52, and are connected to the first blade body 10 and the fourth blade body 40 in directions facing each other. It has a second spacer portion 62 formed as described above.

The scissors 1 are arranged on the side opposite to the first grip portion 51 with reference to the connecting portion (3, 5), and are connected to the second blade body 20 and the third blade body 30 in the directions facing each other. It has a third spacer portion 63 formed so as to. The scissors 1 of the present embodiment have the third spacer portions 63 at two positions separated from the positions of the connecting portions (3, 5) in the direction toward the cutting edge. The third spacer portion 63 may be configured so that the dimensions can be finely adjusted with a shim or the like.

FIG. 3 corresponds to a front view when the scissors 1 are viewed with the second grip portion 52 in front. Therefore, in FIG. 3, the third spacer portion 63 appears on the front side. In FIG. 3, a first grip portion 51 exists on the back side of the second grip portion 52, and when the first grip portion 51 is moved with a finger, the second blade body 20 connected by the third spacer portion 63 is formed. And the third blade body 30 rotate and move toward the front of the paper surface of FIG. 3 as a unit.

Next, a state when cutting with scissors 1 will be described. FIG. 4 schematically shows a state when the film 8 after heat sealing is cut using the scissors 1. The scissors 1 are used for preparing a test piece for measuring the sealing strength of a film after heat sealing. As described above in the section "Problems to be Solved by the Invention", when performing this strength test, the width of the test piece is defined, and it is preferable to cut the test piece so as to satisfy this condition.

In FIG. 4, the region sealed in the film 8 is shown by reference numeral 9 (cross-hatching region). Further, in FIG. 4, the blade bodies (10, 40) hidden behind the film 8 are shown by broken lines.

When the scissors 1 are moved by hooking a finger on the first grip portion 51 and the second grip portion 52, the first blade body 10 and the second blade body 20 open and close with reference to the first connecting portion 3, and at the same time, the third The blade body 30 and the fourth blade body 40 open and close with reference to the second connecting portion 5. The separation distance between the second blade body 20 and the third blade body 30 arranged inside is fixed at the third spacer portion 63. The first blade body 10 and the fourth blade body 40 arranged on the outside are connected by the first spacer portion 61, and the second blade body 20 and the third blade body 40 are connected by the connecting portions (3, 5), respectively. It is also connected to the blade body 30.

As a result, the second blade body 20 and the third blade body 30 located inside are opened and closed with respect to the first blade body 10 and the fourth blade body 40, respectively, while maintaining the interval defined by the third spacer portion 63. Do the action. Further, the first blade 10 arranged on the outside is connected to the second blade 20 arranged on the inside at the first connecting portion 3, and the fourth blade 40 arranged on the outside is connected to the second blade 20 arranged on the inside. It is connected to the third blade body 30 arranged inside by the second connecting portion 5. Further, the first blade body 10 and the fourth blade body 40 are also connected by the second spacer portion 62.

That is, according to this configuration, the first blade body 10 and the fourth blade body 40 arranged on the outside hold down the second blade body 20 and the third blade body 30 arranged on the inner side. Each blade is opened and closed. Between the portion cut by the first partial scissors consisting of the first blade 10 and the second blade 20 and the portion cut by the second partial scissors consisting of the third blade 30 and the fourth blade 40. Is provided with a predetermined interval determined by the third spacer portion 63.

As described above, the second blade 20 and the third blade 30 arranged inside are provided with blades (21, 31) at inner positions, respectively, and the first blade arranged outside is provided. The body 10 and the fourth blade 40 are provided with blades (11, 41) at outer locations. This is similar to the situation where the right-handed scissors part and the left-handed scissors part are arranged facing each other. With such a configuration, the adhesion between the blades (10, 40) arranged on the outside and the blades (20, 30) arranged on the inside can be ensured.

If right-handed scissors are placed facing each other, when the grip is moved with a finger, the force from the outer blade to the inner blade acts on one of the scissors. On the other hand, the force acting from the inner blade to the outer blade acts on the other scissors. In this case, the latter scissors exert a force in a direction that reduces the adhesion between the outer blade and the inner blade. As a result, it becomes difficult to cut with a certain width. The same applies to the case where the left-handed scissors are arranged facing each other.

According to the above configuration, when the first grip portion 51 and the second grip portion 52 are moved by hooking a finger, the two blades (10, 40) arranged on the outside are both blades arranged on the inside. Since the force toward the body (20, 30) acts, the adhesion of each blade is maintained. As a result, the film 8 after sealing can be cut with the width determined by the third spacer portion 63, and a test piece having the specified width d can be prepared (see FIG. 4). In FIG. 4, the cutting line when the film 8 is cut by the scissors 1 is indicated by reference numeral 71.

Further, when cutting the film by this method, it is only necessary to move the scissors 1 once, so that it is not necessary to insert a line marker of the cut width or cut while applying a guide as in the conventional case. , The work is facilitated.

Further, according to the scissors 1 having the above configuration, both a right-handed person and a left-handed person can stably cut with a predetermined width.

In the above configuration, the second spacer portion 62 has the second spacer portion 62 rather than the distance between the first blade body 10 and the fourth blade body 40 at the position of the connecting portion (3, 5). The length may be set so that the distance between the first blade body 10 and the fourth blade body 40 at the arranged position is widened. With such a configuration, the first blade body 10 and the fourth blade body 40 arranged on the outside are arranged in a state of warping toward the tip of the blade. The adhesion to the second blade 20 and the third blade 30 is further enhanced.

[Another Embodiment]
Hereinafter, another embodiment will be described.

<1> In the above-described embodiment, the third spacer portion 63 is provided so as to connect between the second blade body 20 and the third blade body 30 arranged inside. On the other hand, it may be provided so as to connect between the first blade body 10 and the fourth blade body 40 arranged on the outside. FIG. 5 is a front view schematically showing the scissors 1a having such a configuration.

Unlike FIG. 3, FIG. 5 corresponds to a front view when the scissors 1a are viewed with the first grip portion 51 facing the front. Therefore, in FIG. 5, the third spacer portion 63 appears on the front side. In FIG. 5, a second grip portion 52 exists on the back side of the first grip portion 51, and when the second grip portion 52 is moved with a finger, the first blade body 10 connected by the third spacer portion 63 is used. And the fourth blade 40 are integrally rotated and moved toward the front of the paper surface of FIG.

Under this configuration, when the scissors 1a are moved by hooking a finger on the grip portions (51, 52), the first blade body 10 and the fourth blade body 40 located on the outside are defined by the third spacer portion 63. Opening and closing operations are performed on the second blade body 20 and the third blade body 30, respectively, while maintaining an interval. Further, the second blade body 20 arranged inside is connected to the first blade body 10 arranged outside at the first connecting portion 3, and the third blade body 30 arranged inside is connected to the first blade body 10 arranged outside. It is connected to the fourth blade body 40 arranged on the outside at the second connecting portion 5. Further, the second blade body 20 and the third blade body 30 are also connected by the first spacer portion 61.

Therefore, as in the above embodiment, the portion cut by the first partial scissors composed of the first blade body 10 and the second blade body 20, and the second portion composed of the third blade body 30 and the fourth blade body 40. A predetermined interval determined by the third spacer portion 63 will be provided between the portions cut by the partial scissors. As a result, the film 8 after sealing can be cut with a width determined by the third spacer portion 63, and a test piece having a specified width can be produced by a simple method.

However, as in the configuration of the above-described embodiment, by providing the third spacer portion 63 on the inner blade body (20, 30), the film 8 after cutting is the blade body (10, 20, 30, 30) of the scissors 1. Even if it remains between 40), it is easy to insert a finger between the outer blades (10, 40) where the third spacer 63 is not provided, so the remaining film can be taken out more safely. It is preferable in that it can be used.

<2> In the above-described embodiment, the third spacer portion 63 is provided at two positions between the connecting portion (3, 5) and the tip of the blade, but three or more locations may be provided. Or, it may be one place. When the third spacer portion 63 is provided at two or more locations, it is composed of a partial scissors composed of the first blade body 10 and the second blade body 20, and a third blade body 30 and a fourth blade body 40. The function of stably holding the distance from the partial scissors is further enhanced.

Similarly, the first spacer portion 61 and the second spacer portion 62 may be provided at three or more locations, or may be provided at one location.

<3> According to the scissors (1,1a) of the above-described embodiment, the film 8 can be cut to a predetermined width in a state of having high accuracy to prepare a test piece. However, the present invention is not limited to scissors that can be cut with the width specified in the JIS Z 0238 standard described above. Like scissors (1,1a), it has a blade body (10, 20, 30, 40), a connecting portion (3, 5), a grip portion (51, 52), and a spacer portion (61, 62, 63). All configurations are within the scope of the present invention.

1,1a: Scissors 3: 1st connecting part 5: 2nd connecting part 8: Film 9: Sealing area 10: 1st blade 11: 1st blade blade 20: 2nd blade 21: 2nd blade Blade 30: Third blade 31: Third blade blade 40: Fourth blade 41: Fourth blade blade 51: First grip 52: Second grip 61: First spacer 62: Second spacer part 63: Third spacer part 71: Cutting line

Claims (5)

The first blade, the second blade, the third blade, and the fourth blade with blades formed at each end,
A first connecting portion that rotatably connects the first blade and the second blade,
A second connecting portion that rotatably connects the third blade and the fourth blade,
A first grip portion connected to the second blade and the third blade at an end opposite to the side on which the blade is formed.
A second grip portion connected to the first blade and the fourth blade at an end opposite to the side on which the blade is formed.
It is arranged at a position between the first connecting portion and the second connecting portion and the first gripping portion with respect to the extending direction of the second blade, and is arranged on the second blade and the third blade. A first spacer portion formed so as to connect in a direction opposite to each other,
It is arranged at a position between the first connecting portion, the second connecting portion, and the second gripping portion with respect to the extending direction of the first blade, and is attached to the first blade and the fourth blade. A second spacer portion formed so as to connect in a direction opposite to each other,
Regarding the extending direction of the second blade, the first connecting portion and the second connecting portion are arranged on the opposite side of the first gripping portion, and the second blade and the third blade are arranged. It is provided with a third spacer portion formed so as to be connected to each other in a direction facing each other.
The second blade and the third blade are arranged inside the side sandwiched between the first blade and the fourth blade with respect to the direction in which the first blade and the fourth blade face each other. And
The region where the blade is formed on the second blade and the region where the blade is formed on the third blade are opposed to each other.
The region where the blade is formed on the first blade and the region where the blade is formed on the fourth blade are both the first in the direction in which the first blade and the fourth blade face each other. Scissors characterized by being located on the outer side opposite to the two blades and the third blade . The first blade, the second blade, the third blade, and the fourth blade with blades formed at each end,
A first connecting portion that rotatably connects the first blade and the second blade,
A second connecting portion that rotatably connects the third blade and the fourth blade,
A first grip portion connected to the second blade and the third blade at an end opposite to the side on which the blade is formed.
A second grip portion connected to the first blade and the fourth blade at an end opposite to the side on which the blade is formed.
It is arranged at a position between the first connecting portion and the second connecting portion and the first gripping portion with respect to the extending direction of the second blade, and is arranged on the second blade and the third blade. A first spacer portion formed so as to connect in a direction opposite to each other,
It is arranged at a position between the first connecting portion, the second connecting portion, and the second gripping portion with respect to the extending direction of the first blade, and is attached to the first blade and the fourth blade. A second spacer portion formed so as to connect in a direction opposite to each other,
Regarding the extending direction of the first blade, the first connecting portion and the second connecting portion are arranged on the opposite side of the second gripping portion, and the first blade and the fourth blade are arranged. It is provided with a third spacer portion formed so as to be connected to each other in a direction facing each other.
The second blade and the third blade are arranged inside the side sandwiched between the first blade and the fourth blade with respect to the direction in which the first blade and the fourth blade face each other. And
The region where the blade is formed on the second blade and the region where the blade is formed on the third blade are opposed to each other.
The region where the blade is formed on the first blade and the region where the blade is formed on the fourth blade are both the first in the direction in which the first blade and the fourth blade face each other. Scissors characterized by being located on the outer side opposite to the two blades and the third blade . The third spacer portion is provided at a plurality of locations so as to be separated from the positions of the first connecting portion and the second connecting portion in the direction toward the tip of the second blade and the third blade. The scissors according to claim 1, wherein the scissors are provided. The third spacer portion is provided at a plurality of locations so as to be separated from the positions of the first connecting portion and the second connecting portion in the direction toward the tips of the first blade and the fourth blade. The scissors according to claim 2, characterized in that they are present. It said second spacer portion than said distance between the first connecting portion and the second before put in the position of the connecting portion SL and the first blade the fourth blade, said second spacer portion is arranged The invention according to any one of claims 1 to 4, wherein the length is set so that the distance between the first blade and the fourth blade at the position where the blade is formed is widened. Scissors.

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