JPS6264389A - Cutter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cutter, and more particularly to a cutter that can suitably cut tubes made of relatively soft materials such as synthetic resin.

(Conventional technology and its problems) FIG. 5 is an explanatory diagram showing a conventional cutter of this kind.

The cutter has a blade 44 exchangeably attached to an upper arm 42 of a clip-shaped main body rotatably pivoted at the tip, and a tube to be cut is held between the cutter and a lower arm 46. 44 to push out the tube, etc.

As shown in FIG. 6, the blade body 44 has a substantially pentagonal outer shape, and cutting edges are formed at one vertex and two ridges sandwiching the vertex.

The blade body 44 is attached to the upper arm 42 so that the apex forming the cutting edge faces downward, and by pushing down the upper arm 42, the apex first sinks into the outer wall of the tube or the like to be cut, and the apex The tube etc. is cut at the two ridges as it is inserted.

Therefore, the sharpness of the apex formed by the edge is important.

That is, the apex is pressed against the outer wall of the tube or the like to be cut by the rotation of the upper arm 42, and this pressing is performed only by force, a so-called push-cutting action, so that the apex is always sharp. Sharpness is required. On the other hand, the two ridges sandwiching the apex are in diagonal contact with the outer wall of the tube to be cut, and slipping occurs when the upper arm 42 is pushed down, so there is a strong cutting force.

As is clear from the above-mentioned cutting action, an excessive cutting force is applied to the apex forming the cutting edge, which always causes the problem that it becomes dull or easily chipped.

When the blade becomes dull or chipped, the apex acts as a guide to the cutting as described above, so the sharpness of the entire cutting blade quickly dulls, requiring strong force for cutting.

For this reason, there was a problem in that the blade body had to be replaced each time.

(Summary of the invention) The present invention has been made in view of the above circumstances, and its purpose is to provide a cutter that can reduce the number of times the blade needs to be replaced and that can always be used with good sharpness. The present invention is characterized in that a cutter is provided with a removably detachable blade and cuts a necessary object by pushing the blade, the blade having a polygonal plate shape as a whole;
A cutting edge is formed at each vertex and edge.

(Embodiments) Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIGS. 1 to 3 are explanatory diagrams showing an example of a cutter according to the present invention.

In the figure, 10 is a base, and 12 is a movable body to which a blade can be detachably attached.

The base 10 and the movable body 12 are provided so as to be movable toward and away from each other. That is, one end wall of the movable body 12 is slidably guided within a guide cylinder 14 that stands up at the end of the base 10, and is moved to a predetermined separation position by a spring (not shown) disposed within the guide cylinder 14. It is set to be located at.

When the movable body 12 is pushed against the biasing force of the spring, the movable body 12 approaches the base 10, and when the pushing force is released, it returns to its original position due to the biasing force of the spring.

Reference numeral 16 denotes a blade detachably provided on the movable body 12.

As shown in FIG. 4, the blade body 16 has a hexagonal overall shape, and cutting edges are provided at each vertex and all edges.

A mounting hole 18 is opened at the center of the blade body 16, and six positioning holes 20 are opened at the periphery.

The blade body 6 is placed so that its mounting holes 18 are aligned with the mounting bolts 22 protruding from the movable body 12, and the positioning holes 20 are positioned in the six positioning bins 24 provided on the movable body 12. At the same time, it is detachably attached to the movable body 12 by tightening the nut 26 to the attachment bolt 22. Further, at this time, one vertex of the blade body 16 is set to face the direction of the base 10.

A blade 16 is placed on the base 10 when the movable body 12 is pushed down.
A fifth section 30 of the tube V is provided, which has a concave groove 28 into which a corresponding apex and both edges sandwiching the apex can be fitted. The tube mounting part 30 is provided so that the upper surface thereof is approximately V-shaped so that the tube to be cut can be easily placed thereon, and the tube can be stably placed in a fixed position. The position where the tube is stably placed is preferably set so that the corresponding apex of the blade 16 located above is slightly offset from the center line of the tube.

Reference numeral 32 denotes a measure box for storing a measure, and is provided across the base 10 and the guide cylinder 14 so that its negative side wall surface becomes a sliding surface.

34 is a box that can store writing instruments such as ballpoint pens and other necessary items. The box 34 is provided with a cup (not shown) if necessary.

Therefore, when necessary, the measuring tape can be pulled out from the measuring box 34 to measure the length of the tube to be cut, mark it with a ballpoint pen or the like, and cut the tube at that position.

The present invention is configured as described above.

Therefore, even if the cutting edge at one apex of the blade body 16 is damaged, by loosening the NAND 26 and inserting it so that the other apex points downward, there is no need to replace the blade each time as in the past. , the tube can always be cut appropriately with a sharp cutting edge.

The blade body 16 is not limited to a hexagonal shape. Further, the base lO and the movable body 12 may be provided in a clip shape as shown in FIG.

As mentioned above, if the tube mounting section 30 is set so that the tube is set so that the apex of the blade 16 and the tube are slightly shifted, the incision is first started by the ridge, and then the apex is set. Cutting becomes easier because it leads and maintains the cut.

(Effects of the Invention) As described above, according to the cutter according to the present invention, since the blade body is provided in a polygonal shape, one blade body can be used many times with always sharpness.

Further, the cost of the blade body can be reduced.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. That's true.

[Brief explanation of drawings]

1 to 3 are perspective views showing an example of a cutter according to the present invention, and FIG. 4 is a front view of the blade body. The fifth is a perspective view of a conventional cutter. 10... Base, 12... Movable body, ■4...
Guide cylinder, 16...Blade body, 18...Mounting hole,
20...Positioning hole, 22...Mounting bolt, 2
4...Positioning bottle, 26...Nand, 2
8... Concave groove, 30... Tube placement part, 32...
・Major box, 34... box, 40・
...Cutter, 42...Upper arm, 44...Blade body, 46...Lower arm.

Claims (1)

[Scope of Claims] 1. In a cutter that has a removably detachable blade and cuts necessary materials by pushing the blade, the blade is formed into a polygonal plate shape, and each vertex of the blade is formed into a polygonal plate shape. and a cutter with a cutting edge formed on the ridge.