JP3039962U - cutter knife - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a cutter knife capable of easily and safely cutting a paper pack such as a milk pack or a sake pack for recycling. SOLUTION: In a cutter knife in which a strip-shaped blade (1) that can be broken off from a tip portion is extended to a sheath-shaped holder (5) and supported so that it can be stored therein, the sheath-shaped holder is cut near the strip-shaped blade. A cutter knife provided with a guide (11).

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a cutter knife, and more particularly to a cutter knife used for cutting paper packs such as milk packs and sake packs for recycling.

[0002]

[Prior art]

 As such a cutter knife, one in which a strip-shaped blade that can be broken off from the tip end thereof is supported by a sheath-shaped holder so that it can be stored and stored is conventionally used.

[0003]

[Problems to be solved by the device]

 When cutting paper packs such as milk packs and sake packs for recycling, the paper packs must be cut along the corners. However, since the material of the paper pack is hard and the surface is slippery, it is difficult to cut the paper pack linearly along the corners with the conventional cutter knife, and the cutting line may be bent. Not only that, but the cutter knife may slip on the paper pack, resulting in unexpected injury to the fingers or the like holding the paper pack. In view of such a situation, the present invention has been made to provide a cutter knife that can easily and safely cut a paper pack such as a milk pack or a sake pack for recycling.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides the following cutter knife.

(1) In a cutter knife in which a strip-shaped blade that can be broken off from the tip is supported by a sheath-shaped holder so that it can be stored and stored, the sheath-shaped holder is provided with a cutting guide in the vicinity of the strip-shaped blade. A cutter knife (claim 1) characterized by the above.

(2) The cutting guide is a plate-shaped body, and the plate-shaped body is provided with a protruding portion protruding forward from the front end of the sheath-shaped holder, and the lower portion of the protruding portion is separated laterally from the strip-shaped blade. It is desirable that it is curved or bent in the direction (claim 2). In the specification including the utility model registration claim, “front” means a direction from the rear end to the tip of the strip-shaped blade, that is, the left direction in FIGS. 1 and 2, and “down”. Means the direction from the back of the strip-shaped blade toward the cutting edge, that is, the downward direction in FIGS. 1 and 3, and “up” means the opposite direction of “down”.

(3) The cutting guide is a plate-shaped body, and the plate-shaped body has a protrusion projecting forward from the front end of the sheath-shaped holder, and the lower part of the protrusion is separated laterally from the strip-shaped blade. It is desirable that the lower part of the sheath-shaped holder, which is bent or bent in the same direction and is the remaining part of the plate-shaped body excluding the protruding part, is formed substantially parallel to the strip-shaped blade (claim 3).

(4) It is desirable that the cutting guides are vertically symmetrical (claim 4).

[0009]

[Action]

 [Cutter knife of claim 1] When cutting a paper pack such as a milk pack or a liquor pack for recycling using the cutter knife of claim 1, the sheath-shaped holder is grasped by one hand and the strip-shaped blade is fed out. Then, while holding the paper pack with the other hand, pull the sheath-shaped holder forward while keeping the cutting guide near the strip-shaped blade in contact with the vertical surface of the corner of the paper pack. The horizontal plane near the corner of the paper pack is cut with a blade. See FIG. In this case, the distance between the strip knife and the cutting guide is constant, so if you cut the horizontal plane of the paper pack with the strip knife while keeping the cutting guide in contact with the vertical surface at the corner of the paper pack, The pack is linearly cut in the vicinity of the corner parallel to the ridgeline of the corner. In addition, since the cutting guide cuts while making contact with the vertical surface of the corner of the paper pack, the cutter knife may slide on the paper pack, resulting in unexpected injury to the fingers holding the paper pack. There is no. The "horizontal plane", "vertical plane" or "inclined surface" in the present specification means "horizontal plane", "vertical plane" or "horizontal plane" when a paper pack to be cut is laid on a horizontal plane such as a table in a horizontally long shape. "Slope".

[Cutter Knife of Claim 2] The cutter knife of claim 2 is for cutting a horizontal plane near the corner parallel to the ridge when one surface forming the ridge of the corner is an inclined surface. Used for. That is, in this case, since the lower part of the protruding portion of the cutting guide of the plate-like body is curved or bent in the direction away from the strip-shaped blade to the side, when the cutter knife is tilted at a predetermined angle, The lower part of the protruding part of the guide preferably contacts the inclined surface (see FIG. 5). Therefore, even when one of the surfaces forming the ridgeline of the corner is an inclined surface, the horizontal plane in the vicinity of the corner is linearly cut in parallel with the ridgeline in the same manner as in the cutter knife of claim 1. You can Also, since the cutting guide cuts while contacting the inclined surface at the corner of the paper pack, the cutter knife may slide on the paper pack, causing unexpected injury to the fingers or the like holding the paper pack. There is no.

[Cutter Knife of Claim 3] In the cutter knife of claim 3, when the cutter knife is tilted at the predetermined angle, the lower part of the protrusion of the cutting guide preferably contacts the inclined surface of the corner. When the cutter knife is tilted at another angle, the rest of the plate-shaped body except the protruding portion of the cutting guide preferably comes into contact with the vertical surface at the corner. That is, in the cutter knife according to claim 3, even when the corner of the paper pack is formed by the vertical surface and the horizontal surface, even when the corner of the paper pack is formed by the inclined surface and the horizontal surface, By using the cutter knives at different angles, the paper pack can be safely cut straight along the corners.

[Cutter Knife of Claim 4] The cutter knife of claim 4 can be used with either left or right hand because the cutting guides are vertically symmetrical. That is, when the cutter knife used with the right hand is used with the left hand, the strip-shaped blade was once pulled out from the sheath-shaped holder, and then the strip-shaped blade was turned upside down and inserted again into the sheath-shaped holder. In the above, the entire cutter knife is used upside down, but since the cutting guides are formed symmetrically with each other, the cutting guide will function without problems when the cutter knife is used with the left hand. See FIG.

[0013]

[Embodiment of the invention]

 Next, an embodiment of the present invention will be described with reference to the accompanying drawings. The reference numeral 1 is a strip-shaped blade. In order to make the strip-shaped blade 1 foldable from its tip, the fold lines 3, 3, ... Are formed in advance at predetermined intervals. Reference numeral 1a is a front end of the strip-shaped blade 1, and reference numeral 1b is a rear end of the strip-shaped blade 1. Further, reference numeral 1c is a back portion of the strip-shaped blade 1, and reference numeral 1d is a cutting edge of the strip-shaped blade 1. The strip-shaped blade 1 is supported by the sheath-shaped holder 5 so that it can be drawn out and stored. Reference numeral 7 is a protrusion for moving the strip-shaped blade 1 back and forth when it is fed or stored. A stopper 9 is detachably attached to the rear portion of the sheath-shaped holder 5, and the strip-shaped blade 1 can be pulled out from the sheath-shaped holder 5 when the stopper 9 is removed. Further, the strip-shaped cutting tool 1 can be stored in the sheath-shaped holder 5 again in the state of being turned upside down.

The sheath-shaped holder 5 is provided with a cutting guide 11 near the strip-shaped blade 1. The cutting guide 11 is, for example, a plate-shaped body, and the plate-shaped body is provided with a projecting portion 13 projecting forward from the front end 5a of the sheath-shaped holder 5, and a lower portion 13a of the projecting portion 13 is lateral from the strip-shaped blade 1. It is desirable that it is curved or bent in the direction away from. Further, it is preferable that the lower portion 15 of the sheath-shaped holder 5 in the remaining portion of the plate-shaped body excluding the protruding portion 13 is formed substantially parallel to the strip-shaped blade 1.

It is desirable that the cutting guides 11 are vertically symmetrical (see FIG. 6). When the lower portion 13a of the protruding portion 13 is curved or bent in the direction away from the strip-shaped cutting tool 1 to the side, the upper portion 13b of the protruding portion 13 is also bent or bent in the same direction. Note that FIG. 6 shows a state in which the strip-shaped blade 1 is turned upside down and stored in the sheath-shaped holder 5, and the entire cutter knife is turned upside down. Further, reference numerals 17 and 19 denote paper packs.

[0016]

[Effect of the invention]

 [Cutter knife according to claim 1] The cutter knife according to claim 1 is provided with a cutting guide in the vicinity of the strip-shaped blade, so that the paper pack is linearly cut in the vicinity of the corner and parallel to the ridge of the corner. can do. In addition, since the cutting guide cuts while making contact with the vertical surface of the corner of the paper pack, the cutter knife may slide on the paper pack, resulting in unexpected injury to the fingers holding the paper pack. There is no.

[Cutter knife of claim 2] In the cutter knife of claim 2, the lower part of the protrusion in the cutting guide of the plate-like body is curved or bent in a direction away from the strip-shaped blade to the side. Even if one of the surfaces forming the ridgeline of the corner is an inclined surface, the horizontal plane in the vicinity of the corner can be cut linearly in parallel with the ridgeline in the same manner as in the cutter knife according to claim 1. it can. In addition, since the cutting guide cuts while contacting the inclined surface at the corner of the paper pack, the cutter knife may slide on the paper pack, resulting in unexpected injury to the fingers or the like holding the paper pack. There is no.

[Cutter Knife of Claim 3] In the cutter knife of claim 3, even when the corner of the paper pack is formed by the vertical surface and the horizontal plane, the corner of the paper pack has the inclined surface and the horizontal plane. Even when the paper pack is formed by using the cutter knife, it is possible to safely cut the paper pack in a straight line along the corner by using the cutter knives at different angles.

[Cutter Knife of Claim 4] In the cutter knife of claim 4, since the cutting guides are formed symmetrically in the vertical direction, the cutter knife can be used with either left or right hand. That is, the cutter knife of claim 4 can be commonly used for both right-handed people and left-handed people.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a cutter knife according to the present invention.

FIG. 2 is a plan view of the above cutter knife.

FIG. 3 is a front view of the above cutter knife.

FIG. 4 is a front view showing an example of a usage state of the above cutter knife.

FIG. 5 is a front view showing another example of the usage state of the same cutter knife.

FIG. 6 is a perspective view showing a state in which a strip-shaped blade is turned upside down and accommodated in a sheath-shaped holder, and the entire cutter knife is turned upside down.

[Explanation of symbols]

 1 Striped Blade 1a Tip 1b Rear End 1c Back 1d Cutting Edge 3 Break Line 5 Sheath Holder 5a Front End 7 Projection 9 Stopper 11 Cutting Guide 13 Projection 13a Lower 13b Upper 15 Lower 17 Paper Pack 19 Paper Pack

Claims (4)

[Utility model registration claims] 1. A cutter knife in which a strip-shaped blade that can be broken off from a tip end is supported by a sheath-shaped holder so that the strip-shaped blade can be retracted and stored. The sheath-shaped holder is provided with a cutting guide near the strip-shaped blade. A cutter knife characterized by that. 2. The cutting guide is a plate-shaped body, and the plate-shaped body is provided with a projecting portion projecting forward from a front end of the sheath-shaped holder, and a lower portion of the projecting portion is a direction separated laterally from the strip-shaped blade. The cutter knife according to claim 1, wherein the cutter knife is curved or bent. 3. The cutting guide is a plate-shaped body, and the plate-shaped body is provided with a projecting portion projecting forward from the front end of the sheath-shaped holder, and the lower part of the projecting portion is away from the strip-shaped blade laterally. 2. The cutter knife according to claim 1, wherein the lower portion of the sheath-shaped holder, which is curved or bent in the direction of the arrow and is the remaining portion of the plate-shaped body excluding the protruding portion, is formed substantially parallel to the strip-shaped blade. 4. The cutter knife according to claim 1, wherein the cutting guide is vertically symmetrical.