JPH0470039B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) This invention relates to a cutter blade that can efficiently cut paper or the like into curved or straight shapes.

(Prior Art) Conventionally, cutters with a straight cutting edge had the disadvantage that it was difficult to cut paper or the like into a curved shape, so cutters with a curved cutting edge were provided.

(Problem to be solved by the invention) However, when cutting paper or the like in both straight and curved shapes, both a cutter with a straight cutting edge and a cutter with a curved cutting edge are required. At the same time, it was a hassle to have to frequently replace these two types of cutters depending on the purpose.

The present invention is therefore intended to solve the above problems.

Structure of the Invention (Means for Solving the Problems) That is, as shown in the drawings of the embodiments described later, the present invention includes pointed portions 1a,
1b, 12a, and the pointed end portions 1a, 1b, 1
Among the adjacent both side edges of 2a, curved cutting edges 2, 13 are formed on one side edge, and linear cutting edges 2, 13, 3, 14 are continuous on the other side edge.

(Function) When cutting paper or the like in a curved shape, the curved cutting edges 2 and 13 are used, and when cutting in a straight line, the linear cutting edges 3 and 14 are used.

(Example) First, a cutter blade according to a first example of the present invention will be described with reference to FIG. Pointed ends 1a, 1b are formed on both left and right sides of the plate-shaped blade 1, and a curved cutting edge 2 continues from both pointed ends 1a, 1b along both sides of the blade to a straight cutting edge 2a at the center of the blade. At the same time, a straight cutting edge 3 is formed on the entire spine between both pointed ends 1a and 1b, and both cutting edges 2 and 3 are continuous at the pointed ends 1a and 1b. Note that a mounting hole 4 is transparently provided in the center portion of the blade body 1 in the left-right direction.

Next, a cutter using the above blade will be explained with reference to FIGS. 2 and 3. The handle 5 has a pair of side plates 6,
7 and a connecting portion 8 that connects the side plates 6 and 7, an opening 9 is formed at the left end of the handle 5, and a long hole 10 extending in the left-right direction is formed on the left side of both side plates 6 and 7. is transparent.

The blade 1 described above is inserted into the handle 5 and attached to the handle 5 by the slider 11 passed through both long holes 10 of the same handle 5 and the attachment hole 4 of the blade 1,
It is movable in the left and right direction within the range of the elongated hole 10.

Now, when in use, one pointed end 1a of the blade 1 is made to protrude from the opening 9 of the handle 5. When cutting paper or the like in a curved line, the curved cutting edge 2 is used, and when cutting the paper or the like in a straight line, the linear cutting edge 3 is used. Both cutting edges 2 and 3 are both pointed ends 1
Since it is formed continuously in a and 1b,
Even when cutting paper etc. continuously from a curved shape to a straight shape or from a straight shape to a curved shape, the pointed end 1a
All you have to do is change your grip on the handle 5 while keeping it in contact with paper or the like. Although not shown, the other pointed end 1b of the blade 1 can be used in the same manner. On the other hand, when not in use, the blade 1 is stored in the handle 5.

Note that the blade of the cutter according to the first embodiment is not limited to the shape described above, and may be embodied as follows.

(a) As shown in FIG. 4, an arcuate cutting edge 2 is formed on the entire belly of the blade 1 in the first embodiment.

(b) As shown in Fig. 5, a curved cutting edge 2 is formed along the left side from the left side of the tip between the two points 1a and 1b, and the right side A straight cutting edge 3 is formed along the right side from 1b, and these cutting edges 2,
3 are continuous with each other approximately at the center of the antinode.
On the other hand, a straight cutting edge 3 is formed along the left spine from the left tip 1a among the spines between the two tip portions 1a and 1b, and a curved edge 3 is formed from the right tip 1b along the right spine. shaped cutting edge 2
are formed, and these cutting edges 2 and 3 are continuous with each other approximately at the center of the back. The cutting edges 2 and 3 on the ventral side and the cutting edges 2 and 3 on the back side have the same shape.

Next, a cutter blade according to a second embodiment of the present invention will be described with reference to FIGS. 6 and 7. Pointed ends 12a and 12b are formed on both left and right sides of the plate-shaped blade 12, and a curved cutting edge 13 is formed from the left pointed end 12a along the left side belly, and between both pointed ends 12a and 12b. There is a straight cutting edge 1 on the entire back of the
4 is formed, and both cutting edges 13 and 14 are continuous at the left pointed end 12a. As shown in FIG. 6, a plurality of cutting grooves 15 are formed on one side of the blade 12 on the right side of the blade 12, and a mounting hole is formed approximately in the center of the blade 12 in the left-right direction. 16 are transparently provided.

Furthermore, a cutter using the above blade will be explained with reference to FIGS. 8 to 10. The handle 17 is composed of a pair of side plates 18 and 19 and a connecting part 20 that connects the side plates 18 and 19. Openings 21 and 22 of the same shape are formed at both left and right ends of the handle 17, and the right opening An opening closing cap 23 is detachably attached to the portion 22.
The side plates 18 and 19 have long holes 24 extending in the left and right direction.
is transparent.

The blade 12 described above is inserted into the handle 17 and attached to the handle 12 by a slider 25 that passes through both long holes 24 of the handle 17 and the attachment hole 16 of the blade 12. It is possible to move left and right within a range.

When in use, the left opening 2 of the handle 17 is
1 protrudes the left tip 12a of the blade 12,
When cutting paper or the like in a curved shape, a curved cutting edge 13 is used, and when cutting paper or the like in a straight line, a straight cutting edge 14 is used. Although not shown, the opening closing cap 2 is inserted from the right side opening 22.
It is also possible to use a straight cutting edge 14 by removing the blade 3 and protruding the right tip 12b of the blade 12. On the other hand, when not in use, the blade 12 is stored in the handle 17.

Effects of the Invention In short, according to the present invention, a pointed end is formed on the outer peripheral edge of the blade body, a curved cutting edge is formed on one side of the adjacent both side edges of the pointed end, and a curved cutting edge is formed on one side of the adjacent both sides of the pointed end. Since the blade has a straight cutting edge, it is not necessary to use two types of cutters, and paper, etc. can be cut in either a curved or straight shape with just one blade, which is economical. Since these cutting edges are continuous, even when cutting paper etc. from a curved line to a straight line or from a straight line to a curved line, you can simply switch the handle while keeping the point in contact with the paper etc. It is very convenient to use.

[Brief explanation of the drawing]

FIG. 1 is a front view of a cutter blade according to the first embodiment of the present invention, FIG. 2 is a front view showing the blade according to the first embodiment attached to the handle of the cutter, and FIG. 3 is a bottom view of the blade according to the first embodiment. 4 and 5 are front views showing other examples of the first embodiment, FIG. 6 is a front view of a cutter blade according to the second embodiment of the present invention, and FIG. 7 is a rear view,
FIG. 8 is a front view showing the blade according to the second embodiment attached to the handle of a cutter, FIG. 9 is a bottom view, and FIG. 10 is a sectional view. Blade body 1, pointed parts 1a, 1b, cutting edges 2, 3, blade body 12, pointed part 12a, cutting edges 13, 14.

Claims (1)

[Claims] 1 Points 1a, 1b, on the outer peripheral edge of the blade bodies 1, 12
A curved cutting edge 2, 13 is formed on one side of the adjacent side edges of the pointed end portions 1a, 1b, 12a, and a straight cutting edge 3, 14 is formed on the other side edge. , and the pointed end 1
a, 1b, 12a, these cutting edges 2, 3,
A cutter blade characterized by consecutive numbers 13 and 14.