JP2018033804A - Scissors - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide scissors capable of cutting a predetermined width with high accuracy.SOLUTION: Scissors comprises a first blade body, a second blade body, a third blade body and a fourth blade body for forming a blade in respective end parts, a first connection part for relatively rotatably connecting the first blade body and the second blade body, a second connection part for relatively rotatably connecting the third blade body and the fourth blade body, a first spacer part and a third spacer part formed so as to connect in the mutually opposed direction to the second blade body and the third blade body and a second spacer part formed so as to connect in the mutually opposed direction to the first blade body and the fourth blade body. The second blade body and the third blade body are arranged on the inside of the first blade body and the fourth blade body, and an area for forming the blade in the second blade body and an area for forming the blade in the third blade body are mutually opposed, and both an area for forming the blade in the first blade body and an area for forming the blade in the fourth blade body are positioned on the outside.SELECTED DRAWING: Figure 1

Description

  The present invention relates to scissors, and more particularly to scissors used for cutting with a defined width.

  The heat sealing technique is widely used when packaging various products. This is a technique in which a film made of plastic or the like is sealed by heating and heat-sealing.

  By the way, even after sealing, if a sufficient strength is not maintained, a completely sealed state is not 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 above-mentioned 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 slight error with at least 15.0 mm as the center. Has been.

  In order to perform a strength test based on this standard, a method is generally employed in which a ruler is applied to a film and the film is cut out with a cutter knife. When a test piece is prepared by this method, the width of the test piece inevitably varies. Until now, this level of variation was considered acceptable. There are two reasons for this.

  Usually, a correctly heat-sealed packaging material exhibits a sufficiently high value (for example, more than twice) for 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, slight variations in width are acceptable.

  However, the above situation 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 required width as much as possible and measure the strength using the test piece.

  Also, it is troublesome to cut the film using a ruler and a cutter. On the other hand, when trying to cut the film using general scissors, the film is easily deformed at the time of cutting, so that it is difficult to cut with the correct width. That is, when the scissors are inserted into the film, the width of the film located at the tip of the scissors may be different from the width of the film located at the base of the scissors.

  An object of this invention is to provide the scissors which can cut | disconnect a predetermined width | variety with high precision in view of said subject.

The scissors according to the present invention are:
A blade is formed at each end, a first blade, a second blade, a third blade, and a fourth blade,
A first connecting portion that connects the first blade body and the second blade body in a relatively rotatable manner;
A second connecting portion for connecting the third blade body and the fourth blade body in a relatively rotatable manner;
A first grip portion connected to the second blade body and the third blade body at an end opposite to the side on which the blade is formed;
A second gripping portion connected to the first blade body and the fourth blade body at the end opposite to the side on which the blade is formed;
It arrange | positions in the position between said 1st connection part and said 2nd connection part, and said 1st holding part, and it connects to the direction mutually opposed with respect to said 2nd blade body and said 3rd blade body. A first spacer portion formed as described above,
It arrange | positions in the position between said 1st connection part and said 2nd connection part, and said 2nd holding part, and it connects with the direction which mutually opposes with respect to said 1st blade body and said 4th blade body. A second spacer portion formed as described above,
The first connecting part and the second connecting part are arranged on the side opposite to the first gripping part, and are connected in a direction opposite to the second blade body and the third blade body. A third spacer portion formed to
The second blade body and the third blade body are disposed inside the first blade body and the fourth blade body,
The region where the blade is formed on the second blade body and the region where the blade is formed on the third blade body are opposed to each other,
The region where the blade is formed on the first blade body and the region where the blade is formed on the fourth blade body are both located outside.

The scissors according to the present invention are
A blade is formed at each end, a first blade, a second blade, a third blade, and a fourth blade,
A first connecting portion that connects the first blade body and the second blade body in a relatively rotatable manner;
A second connecting portion for connecting the third blade body and the fourth blade body in a relatively rotatable manner;
A first grip portion connected to the second blade body and the third blade body at an end opposite to the side on which the blade is formed;
A second gripping portion connected to the first blade body and the fourth blade body at the end opposite to the side on which the blade is formed;
It arrange | positions in the position between said 1st connection part and said 2nd connection part, and said 1st holding part, and it connects to the direction mutually opposed with respect to said 2nd blade body and said 3rd blade body. A first spacer portion formed as described above,
It arrange | positions in the position between said 1st connection part and said 2nd connection part, and said 2nd holding part, and it connects with the direction which mutually opposes with respect to said 1st blade body and said 4th blade body. A second spacer portion formed as described above,
The first connecting part and the second connecting part are arranged on the side opposite to the second gripping part, and are connected in a direction opposite to the first blade body and the fourth blade body. A third spacer portion formed to
The second blade body and the third blade body are disposed inside the first blade body and the fourth blade body,
The region where the blade is formed on the second blade body and the region where the blade is formed on the third blade body are opposed to each other,
The region where the blade is formed on the first blade body and the region where the blade is formed on the fourth blade body are both located outside.

  When the third spacer portion is formed so as to be connected to the second blade body and the third blade body in directions opposite to each other, the third spacer portion includes the first connection portion and the third blade portion. It is good also as what is spaced apart in the direction which goes to the front-end | tip of said 2nd blade body and said 3rd blade body from the position of a 2nd connection part, and is provided in several places. Similarly, when the third spacer portion is formed so as to be connected to the first blade body and the fourth blade body in directions opposite to each other, the third spacer portion is connected to the first connection body. It is good also as what is spaced apart in the direction which goes to the front-end | tip of said 1st blade body and said 4th blade body from the position of a part and said 2nd connection part, and is provided in several places.

  In the second spacer portion, the second spacer portion is disposed more 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 body and the fourth blade body at the position is increased.

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

It is a typical perspective view of the scissors concerning one embodiment. It is a typical top view of scissors concerning one embodiment. It is a typical front view of the scissors concerning one embodiment. It is typical drawing which shows a mode that a test piece is cut | disconnected with scissors. It is a typical perspective view of the scissors concerning another embodiment.

  Embodiments 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 does not necessarily match the actual dimensional ratio.

  FIG. 1 is a schematic perspective view of one embodiment of the 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 displayed are denoted by parentheses.

  The scissors 1 shown in FIGS. 1 to 3 include 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 in a relatively rotatable manner, and the third blade body 30 and the fourth blade body 40. The 2nd connection part 5 connected so that it is possible is provided. The second blade body 20 is disposed inside the first blade body 10, and the third blade body 30 is disposed inside the fourth blade body 40.

  FIG. 2 corresponds to a plan view when the scissors 1 are viewed from the first connecting portion 3 side. That is, in FIG. 2, the first blade body 10 and the second blade body 20 are illustrated, 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, the outer surface. The blade 21 of the second blade body 20 is provided on the surface of the second blade body 20 and on the surface opposite to the first blade body 10, that is, on the surface facing the third blade body 30. Yes. 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, on the surface facing the second blade body 20. Yes. The blade 41 of the fourth blade body 40 is a surface of the fourth blade body 40 and is provided on the surface opposite to the third blade body 30, that is, on the outer surface.

  The scissors 1 are connected to the second blade body 20 and the third blade body 30 at the first grip portion 51 connected at the end opposite to the side on which the blades (21, 31) are formed, It has the 2nd holding | grip part 52 connected with the edge part on the opposite side to the side in which the blade (11, 41) is formed with respect to the one blade body 10 and the 4th blade body 40. FIG.

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

  The scissors 1 are disposed at a position 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 opposite to each other. It has the 2nd spacer part 62 formed in this way.

  The scissors 1 are arranged on the opposite side of the first gripping part 51 with respect to the connecting part (3, 5), and are connected in a direction facing each other with respect to the second blade body 20 and the third blade body 30. It has the 3rd spacer part 63 formed so that it may do. The scissors 1 of the present embodiment have third spacer portions 63 at two locations that are separated from the position of the connecting portion (3, 5) in the direction toward the cutting edge. The third spacer portion 63 may be configured so that the size 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. For this reason, in FIG. 3, the 3rd spacer part 63 has appeared on the front side. In FIG. 3, the first gripping portion 51 exists on the back side of the second gripping portion 52, and when the first gripping portion 51 is moved by placing a finger on the second gripping body 52, the second blade body 20 connected by the third spacer portion 63. And the 3rd blade body 30 rotates and moves toward the paper surface front of FIG.

  Next, the state when cutting using scissors 1 will be described. FIG. 4 schematically shows a state where the scissors 1 are used to cut the film 8 after heat sealing. The scissors 1 are used for making 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 to satisfy this condition.

  In FIG. 4, the area sealed in the film 8 is indicated by reference numeral 9 (cross-hatched area). In FIG. 4, the blades (10, 40) that are hidden behind the film 8 are indicated by broken lines.

  When the scissors 1 are moved by placing a finger on the first gripping part 51 and the second gripping part 52, the first blade body 10 and the second blade body 20 open and close with reference to the first connecting part 3, and at the same time, the third The blade body 30 and the fourth blade body 40 open and close with the second connecting portion 5 as a reference. The second blade body 20 and the third blade body 30 arranged on the inner side are fixed at a separation distance in the third spacer portion 63. The first blade body 10 and the fourth blade body 40 arranged on the outer side are connected at the first spacer portion 61, and the second blade body 20 and the third blade body 30 are respectively connected by the connecting portions (3, 5). The blade body 30 is also connected.

  As a result, the second blade body 20 and the third blade body 30 positioned inside are opened and closed with respect to the first blade body 10 and the fourth blade body 40, respectively, while having a space defined by the third spacer portion 63. Perform the action. Moreover, the 1st blade body 10 arrange | positioned on the outer side is connected in the 2nd blade body 20 arrange | positioned on the inner side in the 1st connection part 3, and the 4th blade body 40 arrange | positioned on the outer side is as follows. The third blade body 30 arranged on the inner side is connected to 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, while pressing the second blade body 20 and the third blade body 30 disposed on the inside by the first blade body 10 and the fourth blade body 40 disposed on the outside, Each blade body is configured to be opened and closed. Between a portion cut by the first partial scissors composed of the first blade body 10 and the second blade body 20, and a portion cut by the second partial scissors composed of the third blade body 30 and the fourth blade body 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 disposed on the inner side are provided with the blades (21, 31) at the inner portions, respectively, and the first blade disposed on the outer side. The body 10 and the fourth blade body 40 are provided with blades (11, 41) at outer portions. This is similar to a situation in which a right-handed scissors portion and a left-handed scissors portion are arranged to face each other. By setting it as such a structure, the adhesiveness of the blade body (10, 40) arrange | positioned outside and the blade body (20, 30) arrange | positioned inside can be ensured.

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

  According to the above configuration, when the first gripping part 51 and the second gripping part 52 are moved by placing a finger, the two blade bodies (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 body is maintained. As a result, the sealed film 8 can be cut with a width determined by the third spacer portion 63, and a test piece having a prescribed width d can be created (see FIG. 4). In FIG. 4, a cutting line when the film 8 is cut by the scissors 1 is indicated by reference numeral 71.

  Further, when the film is cut by this method, it is only necessary to move the scissors 1 once, so that there is no need for a step of inserting a line marker having a cut width or cutting while applying a guide as in the prior art. , Work is facilitated.

  Furthermore, according to the scissors 1 having the above-described configuration, there is an effect that even a right-handed person or a left-handed person can stably cut with a predetermined width.

  In the above-described configuration, the second spacer portion 62 is configured so that the second spacer portion 62 is more 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 position where the blade is disposed is increased. By adopting such a configuration, a state is formed in which the first blade body 10 and the fourth blade body 40 disposed on the outer side are warped toward the tip of the blade. The adhesion force with respect to the second blade body 20 and the third blade body 30 is further enhanced.

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

  <1> In embodiment mentioned above, the 3rd spacer part 63 was provided so that between the 2nd blade body 20 and the 3rd blade body 30 which are arrange | positioned inside may be connected. On the other hand, the first blade body 10 and the fourth blade body 40 arranged on the outside may be provided so as to be connected. 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 gripping portion 51 in front. For this reason, in FIG. 5, the 3rd spacer part 63 has appeared on the front side. In FIG. 5, the second gripping portion 52 exists on the back side of the first gripping portion 51, and when the second gripping portion 52 is moved by placing a finger on the first blade body 10 connected by the third spacer portion 63. And the 4th blade body 40 rotates and moves toward the paper surface front of FIG.

  Under this configuration, when the scissors 1a are moved by placing a finger on the gripping portions (51, 52), the first blade body 10 and the fourth blade body 40 located outside are defined by the third spacer portion 63. Opening and closing operations are performed with respect to the second blade body 20 and the third blade body 30, respectively, with a gap. Moreover, the 2nd blade body 20 arrange | positioned inside is connected in the 1st blade body 10 arrange | positioned outside, and the 1st connection part 3, The 3rd blade body 30 arrange | positioned inside is the following. The 4th blade body 40 arrange | positioned on the outer side and the 2nd connection part 5 are connected. Further, the second blade body 20 and the third blade body 30 are also connected by the first spacer portion 61.

  Therefore, similarly to the above-described embodiment, the portion cut by the first partial scissors made of the first blade body 10 and the second blade body 20, and the second made of the third blade body 30 and the fourth blade body 40. A predetermined interval determined by the third spacer portion 63 is provided between the portions cut by the partial scissors. As a result, the sealed film 8 can be cut with a width determined by the third spacer portion 63, and a test piece having a specified width can be created by a simple method.

  However, like the configuration of the above-described embodiment, the third spacer portion 63 is provided on the inner blade body (20, 30), so that the cut film 8 has the blade body (10, 20, 30,. 40), it is easy to put a finger from between the outer blades (10, 40) where the third spacer portion 63 is not provided, so that the remaining film can be taken out more safely. Is preferable in that it can be performed.

  <2> In the above-described embodiment, the third spacer portion 63 is provided at two locations between the connecting portion (3, 5) and the tip of the blade body, but may be provided at three or more locations. 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 scissor 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 maintaining the separation distance from the partial scissors is further enhanced.

  Similarly, also in the 1st spacer part 61 and the 2nd spacer part 62, it may be provided in three or more places, and may be one place.

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

DESCRIPTION OF SYMBOLS 1, 1a: Scissors 3: First connection part 5: Second connection part 8: Film 9: Sealing area 10: First blade 11: Blade of the first blade 20: Second blade 21: Second blade Blade 30: third blade 31: blade of the third blade 40: fourth blade 41: blade of the fourth blade 51: first gripping portion 52: second gripping portion 61: first spacer portion 62: Second spacer part 63: Third spacer part 71: Cutting line

Claims (5)

A blade is formed at each end, a first blade, a second blade, a third blade, and a fourth blade,
A first connecting portion that connects the first blade body and the second blade body in a relatively rotatable manner;
A second connecting portion for connecting the third blade body and the fourth blade body in a relatively rotatable manner;
A first grip portion connected to the second blade body and the third blade body at an end opposite to the side on which the blade is formed;
A second gripping portion connected to the first blade body and the fourth blade body at the end opposite to the side on which the blade is formed;
It arrange | positions in the position between said 1st connection part and said 2nd connection part, and said 1st holding part, and it connects to the direction mutually opposed with respect to said 2nd blade body and said 3rd blade body. A first spacer portion formed as described above,
It arrange | positions in the position between said 1st connection part and said 2nd connection part, and said 2nd holding part, and it connects with the direction which mutually opposes with respect to said 1st blade body and said 4th blade body. A second spacer portion formed as described above,
The first connecting part and the second connecting part are arranged on the side opposite to the first gripping part, and are connected in a direction opposite to the second blade body and the third blade body. A third spacer portion formed to
The second blade body and the third blade body are disposed inside the first blade body and the fourth blade body,
The region where the blade is formed on the second blade body and the region where the blade is formed on the third blade body are opposed to each other,
The scissors, wherein a region where the blade is formed on the first blade body and a region where the blade is formed on the fourth blade body are both located outside. A blade is formed at each end, a first blade, a second blade, a third blade, and a fourth blade,
A first connecting portion that connects the first blade body and the second blade body in a relatively rotatable manner;
A second connecting portion for connecting the third blade body and the fourth blade body in a relatively rotatable manner;
A first grip portion connected to the second blade body and the third blade body at an end opposite to the side on which the blade is formed;
A second gripping portion connected to the first blade body and the fourth blade body at the end opposite to the side on which the blade is formed;
It arrange | positions in the position between said 1st connection part and said 2nd connection part, and said 1st holding part, and it connects to the direction mutually opposed with respect to said 2nd blade body and said 3rd blade body. A first spacer portion formed as described above,
It arrange | positions in the position between said 1st connection part and said 2nd connection part, and said 2nd holding part, and it connects with the direction which mutually opposes with respect to said 1st blade body and said 4th blade body. A second spacer portion formed as described above,
The first connecting part and the second connecting part are arranged on the side opposite to the second gripping part, and are connected in a direction opposite to the first blade body and the fourth blade body. A third spacer portion formed to
The second blade body and the third blade body are disposed inside the first blade body and the fourth blade body,
The region where the blade is formed on the second blade body and the region where the blade is formed on the third blade body are opposed to each other,
The scissors, wherein a region where the blade is formed on the first blade body and a region where the blade is formed on the fourth blade body are both located outside.   The third spacer portion is provided at a plurality of locations, spaced from the positions of the first coupling portion and the second coupling portion in a direction toward the tips of the second blade body and the third blade body. The scissors according to claim 1, wherein:   The third spacer portion is provided at a plurality of locations, spaced from the positions of the first coupling portion and the second coupling portion in a direction toward the tips of the first blade body and the fourth blade body. The scissors according to claim 2, wherein: The second spacer portion is disposed more 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 space | interval between the said 1st blade body and the said 4th blade body in the position currently performed is expanded, The any one of Claims 1-4 characterized by the above-mentioned. Scissors.

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