JP6006450B1 - Multifunctional cardboard cutter - Google Patents

Abstract

[PROBLEMS] To cut a box surface without a mark with a ruler or a pen when cutting it in a straight line; It has a mechanism that facilitates cutting, and enables safe cutting simultaneously. A hinge-type guard plate comprising two guard plates that can be expanded from 0 to 180 degrees, a cutter blade is provided between the guard plates, and one of the guard plates is a telescopic telescopic arm. By operating the main body with the guide provided at the tip of the arm along the edge of the cutting surface, the surface is cut without using other tools such as a ruler or a pen. Further, the corner of the box can be easily and safely cut by operating the main body with the corner formed by the two guard plates aligned with the corner formed by the surface of the box. [Selection] Figure 1

Description

  The present invention relates to a multifunctional cardboard cutter that can cut a cardboard to a desired size without using a ruler or a marking pen.

  Although there existed a cutting cutter with a blade at the tip of L-shaped steel as in Patent Document 1 and an incision instrument with a cutter blade between hinges as in Patent Document 2, the guide portion exceeds 90 degrees due to its structure. Cannot be opened and is only intended to cut corners.

  Although there exists a mechanism for determining the cut-off width as in Patent Document 3, the fixing mechanism for the cutting tool is complicated and not easy to operate. In addition, due to its structure, the mounting plate and the guide plate are bulky, so that it is necessary to reduce the space required for use.

Utility Model Registration No. 3173920 Japanese Utility Model 5-60473 JP-A-9-28948

  By reusing the cardboard box once used for delivery, the cost of delivering another item can be saved, and it is also desirable from the viewpoint of resource utilization. The delivery fee for the courier service is determined by the size of the cardboard box (total length of three sides). For this reason, the user wants to cut the cardboard so as to be as small as possible. In order to reduce the size of the cardboard box, it is necessary to cut the edge of the box, that is, the corner where the plane is orthogonal, but it is not easy to cut straight along the corner. It is necessary to cut not only the edge but also the surface in parallel to the side (edge) in order to obtain a predetermined size. In order to make the corrugated cardboard box to be reused to a predetermined size and straighten the cut, it is common to measure the target size with a ruler, mark it with a pen, etc., and then insert the cutter along the ruler. Not only knives but also relatively long rulers and pens are necessary, and measurement and marking operations using them are troublesome. Furthermore, the larger the object to be processed, the larger the ruler that is required, and the more difficult the operation of the cutter blade is, and there are problems regarding safety and operability. Therefore, the present invention develops a cutter that can easily and safely cut the surface and corners of a cardboard box straight without using a ruler.

According to the first aspect of the present invention, a cutting tool for cutting an object having an edge,
A hinge-shaped guard portion having a connecting portion for connecting the two plates and the two plates so that the two plates can be expanded from 0 degrees to 180 degrees; a handle provided on one side of the connecting portion; A blade provided on the other side, an arm provided on one plate of the two plates so as to extend to the side opposite to the connecting portion, and a scale is provided; and provided at a tip of the arm; It is a cutting tool provided with the guide part guided by the edge of the said target object.

FIG. 1 is a perspective view of a state in which the guard portion is closed. FIG. 2 is a plan view showing a state where the guard portion is closed. FIG. 3 is a plan view when the corner portion of the box is cut with the guard portion opened at 90 degrees. FIG. 4 is a plan view when the side surface of the box is cut with the guard portion opened at 180 degrees. FIG. 5 is a plan view of a guard plate and an extension arm fixing mechanism. FIG. 6 is a side view of the state where the guard portion is closed. FIG. 7 is an enlarged view of the cutter holder.

  The cutting tool of the present invention, that is, the multifunctional cardboard cutter will be described with reference to the drawings.

  FIG. 1 shows the appearance of the multifunctional cardboard cutter when not in use (stored state). As shown in FIG. 1, the multifunctional cardboard cutter 10 includes a hinge-shaped guard portion b composed of two guard plates b1 and b2, a handle portion a that supports the guard portion b in a deployable manner, and a handle portion a. It has a built-in cutter holder g and a guide c provided on the guard plate b1.

  As shown in FIG. 2, the two guard plates b1 and b2 are attached to the tips of the handle a (the connecting portions of the guard plates b1 and b2) via the rotation axes x1 and x2, respectively. The guard plates b1 and b2 can be developed like hinges around the rotation axes x1 and x2. FIG. 3 shows a state where the guard plates b1 and b2 are expanded at 90 degrees, and FIG. 4 shows a state where the guard plates b1 and b2 are expanded at 180 degrees. The tips of the two guard plates b1 and b2 and the tip of the handle a are provided with irregularities such as gears that mesh with each other as shown in FIG. 1, and the rotation is performed at a predetermined angle, for example, every 10 °. The angle of the guard plates b1 and b2 is regulated so as to be maintained.

  As shown in FIG. 4, an extension arm e and an extension arm f are inserted into one guard plate b1, and can be pulled out from the guard plate b1 as necessary. The guard plate b1, the extension arm e, and the extension arm f are all provided with scales in the length direction. A guide c is attached to the tip of the extension arm f so as to be rotatable about the rotation axis x3. In a state where both the extension arm e and the extension arm f are accommodated in the guard plate b1, the guide c is located at the tip of the guard plate b1, as shown in FIGS. All the members constituting the guard part b are formed of a transparent member such as a transparent acrylic plate. As shown in FIG. 5, the arm e is fixed to the guard plate b1 at regular intervals by contact between the thin plate spring s1 installed in the guard plate b1 and the recesses v carved on the side surface of the arm e at regular intervals. Can do. Similarly, the arm f can be fixed at regular intervals to the arm e and thus to the guard plate b1 by contact with the thin plate spring s2 in the arm e.

  The cutter holder g is demonstrated with reference to FIG. 6, FIG. A cutter blade d is attached to the cutter holder g so as to protrude toward the guard part b. The cutter holder g is attached so as to be slidable along a guide groove i provided on the handle a, and the protruding amount of the cutter blade d can be adjusted by the sliding movement of the cutter holder g. In order to facilitate the sliding movement with the finger of the user, the cutter holder g is formed with unevenness (a plurality of grooves) h.

  A method of cutting the corner 1 and the surface 2 of the cardboard box using the cardboard cutter 10 having the above structure will be described with reference to FIGS.

  When the corner 1 of the cardboard box is cut, as shown in FIG. 3, the cardboard cutter 10 is developed so that the opening angle of the guard plate b1 and the guard plate b2 is 90 degrees. The guide c at the tip of the guard plate b1 is also bent at 90 degrees with respect to the guard plate b1. For safety, it is desirable that the cutter blade d slide and protrude after this operation. Next, the guard plates b1 and b2 are closely aligned with the orthogonal side surface 2 forming the corner portion 1 of the box, and cut with a blade while continuing along the corner portion 1 and the side surface 2 of the box from the upper side to the lower side of the corner portion. That is, the corner 1 of the box can be cut with a straight line by sliding the cardboard cutter 10 while the guard plates b1 and b2 and the side surface 2 of the box are in contact. Since the guard part b is transparent, the cut end being cut can be visually recognized. Moreover, since the cutter blade is not exposed to the operation side (the handle portion side), the cutting operation can be performed safely.

  When cutting the side of the box, as shown in FIG. 4, the deployment angle of the guard plates b1 and b2 is opened at 180 degrees, the guide c of the guard plate b1 is rotated so as to be orthogonal to the guard plate b1, Hook on the edge 3 of the side 2 to be cut. Next, the arm e and the arm f are appropriately extended from the guard plate b1 while measuring the length of the side surface to be cut with the scale of the guard plate b1. At this time, the cutter blade d is preferably retracted from the guard portion b by operating the holder g.

  When the cutting position is determined, the cutter blade d is projected from the guard portion b, the handle portion a is pressed against the side of the box, and the cutter blade d is used to make a cut. Next, the handle a is slid forward on the side surface of the box while the guide c is moved along the edge 3 of the side surface 2. Since the guide c is always guided (supported) by the edge 2 of the side surface 2, the side surface 2 can be cut in parallel with the edge 3 of the side surface 2 and with a predetermined cutting width from the guide c. In addition, since the position where the blade is inserted can be determined while looking at the scale, there is no need for a ruler and there is no need to mark with a pen. Furthermore, since the cutter blade is not exposed during the cutting operation, it can be safely cut.

  Although the cutting tool of this invention was demonstrated by the specific example, the cutting tool of this invention is not limited to those specific examples. In the above specific example, the arm is a telescopic type. However, the present invention is not limited thereto, and the arm may be provided so as to overlap the guide plate and slide along the guide plate. Further, the arm may have only a framework of a movable part for sliding movement, for example, a rod-like one, without having a surface. Further, the scale may not be a scale like a ruler, but may be an arbitrary mark such as a protrusion or notch that is attached at predetermined intervals. In addition, a rotating shaft is provided at the tip of the handle as a connecting part between the two guard plates, so that the two guard plates can be deployed. Also good. In this case, the hinge can be attached at a position where it does not interfere with the blade. Furthermore, the guide may be one that slides in a direction perpendicular to the arm and does not have to be provided with a rotation shaft.

a: handle b: guard b1, b2: guard plate c: guide d: blade e: extension arm f: extension arm g: cutter holder h: unevenness i: guide groove m: scale s: thin plate spring v: recess 1 : Box corner 2: Box side 3: Box side edge 10: Cardboard cutter

Claims (5)

A cutting tool for cutting an object having an edge,
A hinge-shaped guard portion having two plates and a connecting portion for connecting the two plates so that the two plates can be expanded from 0 degrees to 180 degrees;
A handle provided on one side of the connecting portion;
A blade provided on the other side of the connecting portion;
An arm provided on one plate of the two plates so as to extend to the opposite side of the connecting portion and having a scale;
A cutting tool provided with a guide part provided at a tip of the arm and guided by an edge of the object.   The cutting tool according to claim 1, further comprising a cutter holder that houses the blade, wherein the cutter holder is slidably movable with respect to the handle.   The cutting tool according to claim 1, wherein the arm is a telescopic arm.   The cutting tool according to claim 1 or 3, wherein the one plate is a see-through plate.   The cutting tool according to claim 1, 3, or 4, wherein the guide portion is attached to a distal end of the arm so as to be rotatable or slidable.

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