JP2005087669A - Manual paper cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manual paper cutter whereby straight line cutting can be performed with only a straight ruler, leaving no cutting damage on a desk surface, even when no cutting board is used. <P>SOLUTION: This manual paper cutter is provided with guides for sliding along the top and side surfaces of a straight ruler, and a sharp-edged blade disposed on the surface where the side guide slides. The top guide is projected ahead of the blade in the moving direction, while the side guide stays behind the blade in the moving direction. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a manual paper cutting tool used for manually cutting a sheet material such as paper in a straight line.

  In order to cut a sheet material such as one or a plurality of sheets in a straight line, a straight knife for guiding the cutter knife and the cutter knife, cutting to prevent wrinkles on the desk surface, and cutting to suppress wear of the blade of the cutter knife Use an underlay.

  Each time a sheet is cut, it is troublesome to prepare three points: a cutter knife, a straight ruler, and a cutting underlay, and it is difficult to cut a straight line with normal scissors.

  The manual paper cutting tool of the present invention has a guide for sliding along both the upper surface and the side surface of the linear ruler, and a cutter having a sharp edge on the same surface as the side guide surface. Is a structure that protrudes forward in the direction of travel relative to the blade, and the side guides do not protrude forward in the direction of travel than the blade.

  The present invention provides a manual paper cutting tool capable of cutting a paper into a straight line without using a crease on a desk surface using only a general office linear ruler without using a cutting underlay.

  Since the present invention uses a straight line ruler for general offices to cut a straight line of paper easily, a structure in which a thin blade having a sharp blade edge is attached to a main body made of a synthetic resin has smooth sliding. This is desirable because it can be obtained at low cost and can be manufactured at low cost.

  1 and 2 show a first embodiment of the present invention, FIG. 1 is an overall perspective view, and FIG. 2 is an enlarged perspective view of a manual paper cutting tool main body portion.

  The guide surface 2 of the manual paper cutting tool 1 and the inner surface 4 of the cutter 3 slide along the upper surface 6 and the side surface 7 of the linear ruler 5, respectively, and the guide surface 2 travels as indicated by the arrow A rather than the blade edge 8. Projects forward in the direction.

  In the manual paper cutting tool 1 of the present invention configured as described above, the paper 10 is placed with the corner 9 of the straight ruler 5 as the cutting position, and the guide surface 2 and the surface 4 are pressed against the upper surface 6 and the side surface 7 of the straight ruler 5, respectively. However, when the paper 10 is pressed by the guide surface 2 protruding forward and then slid in the direction of the arrow A, the paper 10 is cut into a straight line at the position of the corner 9 of the straight ruler 5.

  It is desirable that the blade edge of the blade is inclined obliquely with respect to the traveling direction. In this way, the blade edge becomes more acute with respect to the paper, and the cut paper is guided smoothly upward or downward. Cutting operation can be performed.

  Since a general straight ruler has a thickness of about 2 mm to 3 mm, it is desirable that the downward projection of the portion guiding the side of the ruler should not exceed 2 mm.

  FIG. 3 shows a manual paper cutting tool 11 according to a second embodiment of the present invention, in which a guide surface 12 that slides on the side of a straight ruler (not shown) is integrated with a guide 13 that slides on the top of the straight ruler. The inner surface 15 of the blade 14 is arranged so as to be flush with the guide surface 12, and the thicker portion than the blade 14 is behind the blade edge 16 with respect to the traveling direction A. In addition, it has an inclined surface 17 that guides the cut sheet (not shown) downward.

  In the manual paper cutting tool of Example 2 configured in this way, the sliding surface is a self-lubricating resin, so damage to a linear ruler made of a material such as resin or aluminum due to repeated use. It is less likely to be applied, can be slid smoothly, and has a shape in which most of the blade portion is covered with resin, which is advantageous in terms of handling safety.

  FIG. 4 shows a manual paper cutting tool 18 according to the third embodiment of the present invention. A roller 19 guides the upper surface 6 of the linear ruler 5, and has a rotatable circular cutter 20 with a sharp edge on the periphery. doing.

  In the manual paper cutting tool of Example 3 configured as described above, the roller surface does not rub against the paper surface and can be moved lightly. At the same time, the circular blade has a cutting edge over the entire length of the periphery, so durability Is also expensive.

  5 to 7 show a manual paper cutting tool 21 according to a fourth embodiment of the present invention. FIG. 5 is a perspective view when not in use, FIG. 6 is a cross-sectional view when not in use, and FIG. It is sectional drawing.

  The blade 22 is attached by a shaft 23. When the blade 22 is not used, the blade 25 is retracted to a position where the blade 25 does not protrude to the outside by the spring 24. When the blade 22 is used, the guide surface 26 is pressed onto the linear ruler 5. Then, the rear end 27 of the blade 22 is pushed and rotated by the desk surface 28, the blade edge 25 protrudes to the lower cutting position, and the surface 29 on the blade edge side of the blade 22 is opposed to the side surface 7 of the linear ruler 5. When it becomes a guide surface and is moved in the direction of arrow A, the paper 10 is cut into a straight line.

  In the manual cutting tool of Example 4 configured in this way, the cutting edge is retracted when not in use, so that it is safe in handling, and when not in use, the cutting edge can be completely hidden and not visible.

  Since a general straight ruler is about 2 mm to 3 mm in thickness, the amount of protrusion at the rear edge of the blade when not in use and the amount of protrusion at the edge of the blade when in use should be selected accordingly. If the thickness of the ruler is different, the position of the cutting edge to be cut changes, which is advantageous in terms of durability.

  It is a perspective view which shows Example 1 of this invention.   It is a partial expansion perspective view of the manual paper cutting tool main-body part of FIG.   It is a perspective view which shows Example 2 of this invention.   It is a front view which shows Example 3 of this invention.   It is a perspective view which shows the state at the time of non-use of Example 4 of this invention.   It is sectional drawing of FIG.   It is sectional drawing which shows the state at the time of use of FIG.

Explanation of symbols

1, 11, 18, 21 Manual paper cutting tool 2, 13, Upper guide surface 3, 14, 22 Blade 4, 12, 29 Side guide surface 5 Straight ruler 6 Ruler upper surface 7 Ruler side surfaces 8, 15, 25 Cutting edge 9 Ruler corner 10 Paper 17 Inclined surface 19 Roller 20 Circular cutter 28 Desk surface

Claims (3)

  A guide for sliding along both the upper surface and the side surface of the linear ruler, and a cutter having a sharp edge on the same surface as the guide surface of the side surface, and the guide on the upper surface is forward of the cutting direction with respect to the cutter The manual paper cutting tool has a structure that projects to the front and does not project forward in the direction of travel from the blade.   The manual paper cutting tool according to claim 1, wherein the cutter is held so as to be movable, and the blade tip protrudes during use.   A structure in which the blade edge of the blade protrudes by holding the blade rotatably, causing the rear end portion of the blade to protrude larger than the thickness of a linear ruler, and pushing the rear end portion during use. The manual paper cutting tool according to claim 2.

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