JP7473929B2 - Tape cutter - Google Patents

Description

The present invention relates to a tape cutter for adhesive tape.

An example of a conventional tape cutter is described in Patent Document 1. The tape cutter described in this document is equipped with a holding part that rotatably holds a tape roll made of adhesive tape wound around a core, an attachment part (temporary fastening part) to which the tip of the adhesive tape pulled out from the tape roll is attached, and a cutting blade for cutting the adhesive tape. The attachment part is provided between the holding part and the cutting blade.

JP 2007-176612 A

In the tape cutter described above, the adhesive tape is unwound by pinching the adhesive tape with the fingers and pulling it toward the tip. To be able to pinch the adhesive tape with the fingers in this way, it is necessary to ensure sufficient space between the holding part and the application part to insert the fingers. This means that the distance from the holding part to the cutting blade must be long. This was a factor that prevented conventional tape cutters from being made smaller.

The present invention has been made in consideration of the above problems, and aims to provide a tape cutter with a structure suitable for miniaturization.

The tape cutter according to the present invention is a tape cutter for wound adhesive tape, and comprises a holding portion that rotatably holds the wound portion of the adhesive tape, a cutting blade that cuts the pull-out portion, which is the portion of the adhesive tape that is pulled out from the wound portion, and an attachment portion that is located between the winding portion and the cutting blade and to which a part of the pull-out portion of the adhesive tape is attached, and the width of the attachment portion is smaller than the width of the adhesive tape.

In this tape cutter, the width of the affixed portion is smaller than the width of the adhesive tape. In this case, there is a portion that is not affixed to the affixed portion in the same region as the affixed portion in the extension direction of the pull-out portion of the adhesive tape. This portion is exposed on both sides and can be pinched with fingers. Therefore, it is possible to pinch the pull-out portion with fingers even in the above region. This makes it possible to pinch the pull-out portion of the adhesive tape with fingers even if the distance from the holding portion to the cutting blade is shortened.

According to the present invention, a tape cutter with a structure suitable for miniaturization is realized.

1 is a side view showing one embodiment of a tape cutter according to the present invention. FIG. 2 is a plan view showing the tape cutter of FIG. 1 . 4 is a plan view for explaining the dimensions etc. of the adhesion portion 30. FIG. 2 is a side view showing the cutting blade 20, the adhering portion 30 and the adhesive tape 90. FIG. 2 is a side view for explaining an example of a method of using the tape cutter of FIG. 1. FIG. 2 is a side view for explaining an example of a method of using the tape cutter of FIG. 1. FIG. FIG. 2 is a plan view for explaining the effect of the tape cutter of FIG. 1 . 13 is a plan view for explaining a modified example of the adhesion portion 30. FIG. FIG. 2 is a side view showing a modified example of the tape cutter of FIG. 1 . 10 is a plan view showing a protruding portion 50 of the tape cutter of FIG. 9 .

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are given the same reference numerals and duplicated explanations will be omitted.

1 and 2 are a side view and a plan view, respectively, showing one embodiment of a tape cutter according to the present invention. The tape cutter 1 is a tape cutter for wound adhesive tape 90, and is used to unwind and cut the adhesive tape 90. The tape cutter 1 may be a type that is held by hand or a type that is used on a table. The adhesive tape 90 is wound around a circular core. The adhesive tape 90 may have an adhesive surface only on the bottom surface, or may have adhesive surfaces on both sides (top and bottom surfaces). An example of the former is cellophane tape. An example of the latter is double-sided tape. The adhesive surface of the double-sided tape may be exposed only on the bottom surface, or may have adhesive surfaces exposed on both sides. In the former double-sided tape, a release paper is attached to the top surface.

The tape cutter 1 includes a holding portion 10, a cutting blade 20, an adhesive portion 30, and an arm portion 40. The holding portion 10 rotatably holds the wound portion 92 of the adhesive tape 90. The wound portion 92 is a portion of the adhesive tape 90 wound around a core, and has an overall annular shape. The lower surface of each portion of the wound portion 92 is attached to the upper surface of the other portion of the wound portion 92 or to the core. The holding portion 10 has a side plate portion 12 and a shaft portion 14. The side plate portion 12 covers the adhesive tape 90 from the side. The side plate portion 12 may be provided on both sides of the adhesive tape 90, or may be provided only on one side. The side plate portion 12 may cover the entire adhesive tape 90 from the side, or may cover only a portion of the adhesive tape 90. That is, the side plate portion 12 may overlap the entire adhesive tape 90 in a side view, or may overlap only a portion of the adhesive tape 90.

The shaft portion 14 supports the adhesive tape 90 while being inserted inside the core of the adhesive tape 90. The shaft portion 14 may be fixed to the side plate portion 12, or may be provided rotatably relative to the side plate portion 12. In the former case, the adhesive tape 90 rotates alone when being unwound. In the latter case, the adhesive tape 90 rotates together with the shaft portion 14 when being unwound. When the shaft portion 14 is fixed to the side plate portion 12, it is preferable that the shaft portion 14 is molded integrally with the side plate portion 12. The material of the holding portion 10 may be, for example, plastic, metal, wood, or paper. The plastic may be a biodegradable plastic. Paper also includes processed paper and cellulose nanofiber (CNF).

The cutting blade 20 cuts the pull-out portion 94 of the adhesive tape 90. The pull-out portion 94 is a portion of the adhesive tape 90 that is pulled out from the winding portion 92. Therefore, the lower surface of the pull-out portion 94 is not attached to the upper surface or the core of the winding portion 92. The cutting blade 20 is disposed away from the winding portion 92. As a result, the cutting blade 20 cuts the pull-out portion 94, leaving a certain length of the pull-out portion 94. When cutting the pull-out portion 94, the cutting blade 20 abuts against the lower surface of the pull-out portion 94. The material of the cutting blade 20 may be the same as or different from the material of the holding portion 10. The cutting blade 20 may be molded integrally with the holding portion 10.

The adhesive portion 30 is located between the winding portion 92 (holding portion 10) and the cutting blade 20. In this embodiment, the adhesive portion 30 is spaced from the cutting blade 20. A part of the pull-out portion 94 is attached to the adhesive portion 30. Specifically, a part of the lower surface of the pull-out portion 94 is attached to the adhesive surface 32 of the adhesive portion 30. The adhesive surface 32 is equal to the upper surface of the adhesive portion 30. The adhesive surface 32 is flat. The part of the pull-out portion 94 (the part attached to the adhesive portion 30) is between the tip 94a and the base 94b of the pull-out portion 94. The material of the adhesive portion 30 may be the same as or different from the material of the holding portion 10.

The dimensions of the adhesive portion 30 will be described with reference to FIG. 3. This figure shows the cutting blade 20, the adhesive portion 30, and the pull-out portion 94 viewed from a direction perpendicular to the adhesive surface 32. The width w1 of the adhesive portion 30 is smaller than the width w2 of the adhesive tape 90. In other words, the width w1 is designed to be smaller than the width w2 of the adhesive tape 90 that is expected to be used in the tape cutter 1. The width w1 is defined as the dimension in the width direction of the adhesive surface 32 (the direction perpendicular to the extension direction of the pull-out portion 94). The width w1 is preferably 50% or less of the width w2, and more preferably 20% or less. Naturally, the width w1 is smaller than the width of the cutting blade 20. The width w1 is preferably 50% or less of the width of the cutting blade 20, and more preferably 20% or less.

It is preferable that the width dimension of the affixing portion 30 is always smaller than the width w2 in the exposed region. That is, it is preferable that the width dimension of the affixing portion 30 is smaller than the width w2 in any position in the height direction of the affixing portion 30 (vertical direction in FIG. 1) in the exposed region. Here, the exposed region refers to the region where the affixing portion 30 is exposed in a side view (the region that does not overlap with the holding portion 10 or the arm portion 40). In FIG. 1, the part of the affixing portion 30 represented by a solid line is the exposed region. The width dimension of the affixing portion 30 may or may not be constant in the exposed region. In the former case, it means that the width dimension of the affixing portion 30 is equal to the width w1 in any position in the height direction of the affixing portion 30 in the exposed region.

The length d1 of the adhesive portion 30 is greater than the width w1. The length d1 is defined as the dimension of the adhesive surface 32 in the extension direction of the pull-out portion 94. The length d1 is, for example, 5 mm or more and 15 mm or less. In this embodiment, the bisecting plane P1 of the adhesive portion 30 coincides with the bisecting plane P2 of the cutting blade 20. The bisecting plane P1 is a plane perpendicular to the width direction that bisects the adhesive surface 32. The bisecting plane P2 is a plane perpendicular to the width direction that bisects the cutting blade 20.

4 is a side view showing the cutting blade 20, the adhesive part 30, and the adhesive tape 90. As can be seen from the figure, in a side view, the adhesive surface 32 of the adhesive part 30 is located above the reference line L1 (first reference line). The reference line L1 is a straight line passing through the base 94b of the pull-out part 94 and the tip of the cutting blade 20 (the tip 94a of the pull-out part 94). The height h1 of the adhesive surface 32 from the reference line L1 is preferably 5 mm or more, and more preferably 10 mm or more. The height h1 is defined as the length of a perpendicular line drawn from the part of the adhesive surface 32 closest to the reference line L1 (the end 32b in the present embodiment, which will be described later) to the reference line L1 in a side view. In addition, in a side view, the end 32a on the cutting blade 20 side (the tip 94a side) of the adhesive surface 32 is located above the reference line L2 (second reference line). The reference line L2 is a straight line passing through the end 32b on the holding portion 10 side (the base 94b side) of the adhesive surface 32 and the tip of the cutting blade 20.

Returning to FIG. 1, the arm 40 connects the holding part 10 and the cutting blade 20. The arm 40 passes through the underside of the pull-out part 94 and extends from the holding part 10 to the cutting blade 20. There is a space above the arm 40 for inserting fingers. The material of the arm 40 may be the same as the material of the holding part 10, or it may be different. In the former case, it is preferable that the arm 40 is molded integrally with the holding part 10. The adhesive part 30 is connected to the arm 40. In detail, the adhesive part 30 is erected on the arm 40. The adhesive part 30 is fixed so as not to move relative to the arm 40. The adhesive part 30 may be molded integrally with the arm 40.

An example of how to use the tape cutter 1 will be described with reference to Figures 5 and 6. First, as shown in Figure 5, the pull-out portion 94 is pinched with fingers, peeled off from the cutting blade 20 and the adhesive portion 30, and then the adhesive tape 90 is pulled out until the pull-out portion 94 reaches the desired length. Next, as shown in Figure 6, the pull-out portion 94 is pressed against the tip of the cutting blade 20 to cut the pull-out portion 94. After cutting, the pull-out portion 94 is again stuck to the adhesive portion 30. In addition, the tip 94a of the pull-out portion 94 is stuck to the cutting blade 20 (see Figure 1). At this time, the pull-out portion 94 is stuck only to the cutting blade 20 and the adhesive portion 30. In other words, the tape cutter 1 is configured so that the pull-out portion 94 is not stuck to any part of the tape cutter 1 other than the cutting blade 20 or the adhesive portion 30.

The effect of the tape cutter 1 will be described. In the tape cutter 1, the width w1 of the affixing portion 30 is smaller than the width w2 of the adhesive tape 90. In this case, as shown in FIG. 7, in the same region R1 as the affixing portion 30 in the extending direction (left and right direction in the figure) of the pull-out portion 94 of the adhesive tape 90, there is a portion 94c (a portion protruding from the affixing surface 32) that is not affixed to the affixing portion 30. In the figure, the portion 94c is shaded. The region R1 is a region that is in contact with the affixing surface 32 in a side view. The portion 94c is exposed on both sides, so it can be pinched with fingers. Therefore, it is possible to pinch the pull-out portion 94 with fingers even in the region R1. As a result, even if the distance from the holding portion 10 to the cutting blade 20 is shortened, the pull-out portion 94 of the adhesive tape 90 can be pinched with fingers. Therefore, a tape cutter 1 with a structure suitable for miniaturization is realized.

When the distance from the holding part 10 to the cutting blade 20 is shortened in this way, the length of the pull-out part 94 is reduced, so that dust is less likely to adhere to the adhesive tape 90. In addition, since the pull-out part 94 is attached to the attachment part 30, even if the tip 94a of the pull-out part 94 is separated from the cutting blade 20, the pull-out part 94 is less likely to return to the winding part 92. Furthermore, when the width w1 of the attachment part 30 is smaller than the width w2 of the adhesive tape 90, the contact area with the adhesive tape 90 and therefore the adhesive strength between the adhesive tape 90 can be adjusted by changing the width w1. This increases the options for the material of the attachment part 30, making it easier to mold the attachment part 30 integrally with other parts (the holding part 10, the cutting blade 20, and/or the arm part 40).

By making the width w1 smaller, the portion 94c that is not attached to the attachment portion 30 becomes wider, making it easier to pinch the portion 94c with the fingers. From this viewpoint, the width w1 is preferably 50% or less of the width w2, and more preferably 20% or less. On the other hand, if the width w1 is too small, the adhesive strength between the attachment portion 30 and the adhesive tape 90 may be insufficient. From this viewpoint, the width w1 is preferably 5% or more of the width w2.

If the width dimension of the adhesive portion 30 is always smaller than the width w2 in the exposed area, this is advantageous in securing a wide space for inserting fingers below the portion 94c. If the width dimension of the adhesive portion 30 is constant in the exposed area, the adhesive portion 30 does not penetrate below the portion 94c at all in the exposed area, which is particularly advantageous in securing a wide space for inserting fingers.

The adhesive portion 30 is spaced apart from the cutting blade 20. This makes it difficult for fingers to touch the cutting blade 20 when pinching the portion 94c, thereby improving the safety of the tape cutter 1.

The bisecting plane P1 of the adhesive portion 30 coincides with the bisecting plane P2 of the cutting blade 20. In this case, when the cutting blade 20 cuts the pull-out portion 94, the pull-out portion 94 is supported approximately evenly in the width direction by the adhesive portion 30, which makes it easier to cut smoothly.

The length d1 of the attachment portion 30 is greater than the width w1 of the attachment portion 30. By making the length d1 larger in this manner, it becomes easier to stably maintain the state in which the pull-out portion 94 is attached to the attachment portion 30.

In a side view, the adhesive surface 32 of the attachment portion 30 is located above the reference line L1. In this case, it is possible to pick up the pull-out portion 94 above the reference line L1. By utilizing the space above the reference line L1 in this way, it becomes easier to shorten the distance from the holding portion 10 to the cutting blade 20. Also, in this case, when the pull-out portion 94 is cut by the cutting blade 20, the adhesive surface 32 comes into strong contact with the underside of the pull-out portion 94, making it easier to attach the pull-out portion 94 to the adhesive surface 32.

A larger height h1 of the adhesive surface 32 from the reference line L1 is advantageous for making use of the space above the reference line L1 and for making the adhesive surface 32 strongly contact the underside of the drawer portion 94. From this perspective, the height h1 is preferably 5 mm or more, and more preferably 10 mm or more. On the other hand, if the height h1 is too large, it may cause problems when cutting the drawer portion 94. From this perspective, the height h1 is preferably 30 mm or less.

In a side view, the end 32a of the adhesive surface 32 is located above the reference line L2. In this case, when the cutting blade 20 cuts the pull-out portion 94, the entire adhesive surface 32 comes into strong contact with the underside of the pull-out portion 94, making it easier to attach the pull-out portion 94 to the entire adhesive surface 32.

The tape cutter 1 is configured so that the pull-out portion 94 is not attached to any part of the tape cutter 1 other than the cutting blade 20 or the adhesive portion 30. In this case, both sides of the adhesive tape 90 are exposed over the entire portion of the pull-out portion 94 that is not attached to the cutting blade 20 or the adhesive portion 30. This increases the proportion of the portion that can be gripped with the fingers. This is also advantageous for shortening the distance from the holding portion 10 to the cutting blade 20.

The tape cutter 1 is provided with an arm portion 40. This allows for a tape cutter 1 with a simple configuration that maintains a predetermined distance between the holding portion 10 and the cutting blade 20.

When the arm portion 40 is molded integrally with the holding portion 10, the manufacturing process of the tape cutter 1 can be simplified, thereby reducing the manufacturing cost of the tape cutter 1.

The adhesive portion 30 is connected to the arm portion 40. This makes it possible to realize a tape cutter 1 with a simple configuration in which the adhesive portion 30 is disposed between the winding portion 92 and the cutting blade 20.

When the adhesive portion 30 is molded integrally with the arm portion 40, the manufacturing process of the tape cutter 1 can be simplified, thereby reducing the manufacturing cost of the tape cutter 1.

When the tape cutter 1 contains CNF as a material, it is advantageous to reduce the weight and increase the strength of the tape cutter 1. In addition, the use of CNF also contributes to reducing the environmental impact.

When the adhesive tape 90 is a double-sided tape with the adhesive surface exposed on both sides, dust is more likely to adhere to the upper surface of the pull-out portion 94 than when the adhesive tape has the adhesive surface exposed only on the bottom surface. Therefore, the tape cutter 1 that can reduce the length of the pull-out portion 94 is particularly useful.

The present invention is not limited to the above embodiment, and various modifications are possible. In the above embodiment, the adhesive portion 30 is separated from the cutting blade 20. However, the adhesive portion 30 may be adjacent to the cutting blade 20. In this case, it is easier to mold the adhesive portion 30 integrally with the cutting blade 20.

In the above embodiment, the bisecting plane P1 of the attachment portion 30 coincides with the bisecting plane P2 of the cutting blade 20. However, the bisecting plane P1 does not have to coincide with the bisecting plane P2, for example, as shown in FIG. 8. In this case, the attachment portion 30 is biased in the width direction relative to the pull-out portion 94, so that the portion 94c that is not attached to the attachment portion 30 can be secured widely on one side of the attachment portion 30 (the upper side in FIG. 8). This makes it easier to pick up the portion 94c with the fingers.

In the above embodiment, the length d1 of the attachment portion 30 is greater than the width w1 of the attachment portion 30. However, the length d1 may be equal to the width w1 or may be smaller than the width w1.

In the above embodiment, the adhesive surface 32 of the attachment portion 30 is located above the reference line L1 in a side view. However, the adhesive surface 32 may be located on the reference line L1 or below the reference line L1. In this case, after cutting the pull-out portion 94, the pull-out portion 94 can be reliably attached to the adhesive surface 32 by pressing the pull-out portion 94 against the adhesive surface 32 from above with a finger.

In the above embodiment, the end 32a of the adhesive surface 32 is located above the reference line L2 in a side view. However, the end 32a may be located on the reference line L2 or below the reference line L2. In that case, after cutting the pull-out portion 94, the pull-out portion 94 can be pressed against the adhesive surface 32 from above with a finger to reliably adhere the pull-out portion 94 to the entire adhesive surface 32.

In the above embodiment, the tape cutter 1 may be provided with an overhang 50, for example, as shown in Figures 9 and 10. Figure 10 is a top view of the overhang 50 in Figure 9. The overhang 50 overhangs from the holding portion 10 above the pull-out portion 94. In this example, the overhang 50 extends above the adhesive portion 30. That is, the overhang 50 overlaps the adhesive portion 30 in a planar view. The overhang 50 overlaps the entire adhesive portion 30 in a planar view. The overhang 50 also extends above the cutting blade 20. That is, the overhang 50 overlaps the cutting blade 20 in a planar view. However, the overhang 50 does not have to reach above the cutting blade 20, and does not have to reach above the adhesive portion 30.

Providing the overhanging portion 50 in this manner provides the effect of suppressing the adhesion of dust to the drawer portion 94. When the overhanging portion 50 extends above the attachment portion 30, the above effect can be exerted over a wide area of the drawer portion 94. In particular, when the overhanging portion 50 extends above the cutting blade 20, the above effect can be exerted over substantially the entire drawer portion 94.

1 Tape cutter 10 Holding portion 12 Side plate portion 14 Shaft portion 20 Cutting blade 30 Adhesive portion 32 Adhesive surface 32a End portion (end portion on the cutting blade side)
32b End (end on the holding part side)
40 Arm portion 50 Extension portion 90 Adhesive tape 92 Winding portion 94 Pull-out portion 94a Tip 94b Base 94c Portion (portion not attached to adhesive portion)
P1 Bisecting plane (of adhesive portion) P2 Bisecting plane (of cutting blade) L1 Reference line (first reference line)
L2 Reference line (second reference line)

Claims (22)

1. A tape cutter for wound adhesive tape, comprising:
a holding portion that rotatably holds the wound portion of the adhesive tape;
a cutting blade configured to cut a pulled-out portion of the adhesive tape that is a portion pulled out from the wound portion;
an attachment portion located between the winding portion and the cutting blade, to which a part of the pulled-out portion of the adhesive tape is attached;
an upper surface of the attachment portion is an attachment surface that is formed by the entire portion between the winding portion and the cutting blade to which the pull-out portion is attached;
The width of the attachment portion is smaller than the width of the adhesive tape at any position on the attachment surface,
The tape cutter , wherein the adhesion surface is spaced apart from both side ends of the pull-out portion when the pull-out portion is adhered to the tape cutter. 2. The tape cutter according to claim 1,
A tape cutter, wherein the width of the adhesion portion is 50% or less of the width of the adhesive tape. 3. The tape cutter according to claim 2,
A tape cutter, wherein the width of the adhesion portion is 20% or less of the width of the adhesive tape. The tape cutter according to any one of claims 1 to 3,
A tape cutter in which the dimension in the width direction of the adhesive portion is always smaller than the width of the adhesive tape in an exposed region where the adhesive portion is exposed in a side view. 5. The tape cutter according to claim 4,
A tape cutter, wherein the width dimension of the adhesive portion is constant in the exposed area. The tape cutter according to any one of claims 1 to 3,
The tape cutter, wherein the adhering portion is spaced apart from the cutting blade. The tape cutter according to any one of claims 1 to 3,
The tape cutter, wherein the application portion is adjacent to the cutting blade. The tape cutter according to any one of claims 1 to 3,
A tape cutter in which a bisecting plane of the adhesive portion coincides with a bisecting plane of the cutting blade in the width direction. The tape cutter according to any one of claims 1 to 3,
A tape cutter, wherein the bisecting plane of the adhesive portion does not coincide with the bisecting plane of the cutting blade in the width direction. The tape cutter according to any one of claims 1 to 3,
A tape cutter, wherein the length of the adhesive portion is greater than the width of the adhesive portion. The tape cutter according to any one of claims 1 to 3,
When viewed from the side, the adhesive surface of the adhesive portion is located above a first reference line which is a straight line passing through the base of the pull-out portion and the tip of the cutting blade. The tape cutter according to claim 11,
A tape cutter, wherein the height of the adhesive surface from the first reference line is 5 mm or more. 13. The tape cutter according to claim 12,
A tape cutter, wherein the height of the adhesive surface from the first reference line is 10 mm or more. The tape cutter according to claim 11,
When viewed from the side, the end of the adhesive surface on the cutting blade side is located above a second reference line, which is a straight line passing through the end of the adhesive surface on the holding portion side and the tip of the cutting blade. The tape cutter according to any one of claims 1 to 3,
an arm portion that connects the holding portion and the cutting blade;
The arm portion passes under the pull-out portion and extends from the holder portion to the cutting blade. 16. The tape cutter according to claim 15 ,
The arm portion is integrally formed with the holding portion. 16. The tape cutter according to claim 15 ,
The adhesive portion is a tape cutter connected to the arm portion. 18. The tape cutter according to claim 17 ,
The tape cutter, wherein the adhesive portion is integrally formed with the arm portion. The tape cutter according to any one of claims 1 to 3,
A tape cutter containing cellulose nanofiber as its material. The tape cutter according to any one of claims 1 to 3,
A tape cutter comprising an extension portion extending from the holding portion above the pull-out portion. 21. The tape cutter according to claim 20 ,
The protruding portion of the tape cutter extends above the adhesive portion. 22. The tape cutter of claim 21 ,
The protruding portion extends above the cutting blade.

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