JPH0225660Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a writing instrument integrally equipped with a cutter.

When you cut out articles from magazines or newspapers, it is convenient to write the date, title, etc. on the cutouts for later organization. However, in the past, cutters and writing implements existed individually and independently, so it was not possible to immediately meet such requests, and they had the disadvantage of being inconvenient.

The present invention can be used immediately in such cases, and the amount of protrusion of the cutting edge of the cutter can be freely adjusted according to the thickness of the material to be cut, etc., and the direction of the cutting edge can be freely adjusted even on curved cutting lines. The purpose of this writing instrument is to provide a writing instrument with a cutter that can be rotated and changed to improve the cutting performance of the cutter. A rear shaft portion with a tip is rotatably fitted to the rear end, and an inner cylinder having an axial slit in the side wall is installed in the inner hole extending from the rear shaft portion to the front shaft portion. A feeding device with a magnet attached to the tip and a protrusion on the side edge passed through the slit in the inner tube and fitted into the groove of the spiral tube fixed to the inner surface of the front shaft, was inserted into the tip opening of the tip. At the same time, a cutter in the shape of a round bar with a sharp rear end is slidably inserted into the inner hole of the pipe body, and the rear end is brought into point contact with the magnet to be held there by attraction. The main points are as follows.

Examples thereof will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of the first embodiment. A ballpoint pen refill 2 is housed in a front shaft 1, and a rear shaft 3 is rotatably joined to the front shaft 1. A tip 5 having a pipe body 4 fixed to the tip opening is screwed to the tip of the portion 3. 5 money ahead
On the pipe body 4, a cutter 6 in the shape of a round bar can freely slide, the tip of the blade exhibiting a forward slanted shape when viewed from the side, a sharp wedge shape with both sides gently cut when viewed from the front and back, and a sharp rear end. is inserted into. An inner cylinder 8 having an axial slit 7 in its side wall is fixed in the rear shaft part 3 by inserting one end of the inner cylinder 8 into the rear end part of the front shaft part 1. Inside the inner cylinder 8, a magnet 9 is fixed at the tip and a long plate part 10 is provided at the rear end.
A feeding device 14 having a protrusion 11 on the side edge thereof, the protrusion 11 passing through the slit 7 of the inner cylinder 8 and fitting into the groove 13 of the helical cylinder 12 fixed to the inner surface of the front shaft part 1.
is loaded. This feeding device 14 is a front shaft portion 1
By rotating the protrusion 11 of the long plate part 10 with respect to the rear shaft part 3, the protrusion 11 of the long plate part 10 slides in the groove part 13 of the spiral tube 12, so that it becomes freely slidable in the axial direction. The cutter 6 connects the sharp end 15 at the rear end to the magnet 9 at the tip of the feeding device 14.
It is rotatably adsorbed by point contact. Therefore, the cutting edge of the cutter 6 can be freely projected or retracted from the pipe body 4 by the feeding device 14, and the direction of the cutting edge can be freely changed. Since the feeding device 14 is moved in the axial direction by the rotation of the helical tube 12 of the front shaft portion 1, the amount of protrusion of the cutting edge of the cutter 6 can be slightly changed. In the figure, reference numeral 16 denotes a stopper for preventing the cutter 6 from coming off when it comes off the magnet 9. Further, although the ballpoint pen 2 has a cap 17 attached to it with its tip fixed in a protruding state, it is of course possible to construct it in a retractable type.
A tip shaft 18 is screwed onto the tip of the front shaft portion 1 so that the ballpoint pen 2 can be attached and detached.

Next, FIG. 2 is a longitudinal sectional view of a rearward portion of the second embodiment. The difference from the first embodiment is that the holding cylinder 19 of the magnet 9 of the feeding device 14 extends long in front of the magnet 9, and its tip opening 20 is narrowly constricted to receive the stopper 16 of the cutter 6 at the same place. This is where I am.

Next, FIGS. 3 to 5 show the shape of the cutting edge of the cutter 6. When viewed from the side, it has a forward slanted shape, and when viewed from the front and back, it has a sharp wedge shape with both sides gently shaved. The part is round bar-shaped.

As mentioned above, this invention integrates the cutter with the writing instrument, so it is extremely convenient as it can be used for both writing and cutting.
In addition, in the present invention, an inner cylinder having an axial slit in the side wall is installed in the inner hole extending from the rear shaft part to the front shaft part, and a magnet is attached to the tip of the inner cylinder and a protrusion is provided on the side edge. A feeding device is inserted through the slit of the inner cylinder and fitted into the groove of the spiral cylinder fixed to the inner surface of the front shaft part, and the pipe body is fixed to the tip opening of the tip, and the pipe body is inserted into the inner hole of the pipe body. A round bar-shaped cutter with a sharp rear end was slidably inserted into the section, and the rear end was brought into point contact with the magnet to attract and hold the cutter to the same section, so that the front shaft section could be twisted. Therefore, the amount of protrusion of the cutter's cutting edge can be finely adjusted, and the cutter can be prevented from falling easily and reliably using a magnet.
Furthermore, the tip of the cutter is made magnetic by the magnet that is in contact with its tail end, so that, for example, a stapler piece removed from a stack of sheets can be attracted to it and easily disposed of. It has various effects such as.

[Brief explanation of the drawing]

The figures show embodiments of the present invention. Fig. 1 is a longitudinal sectional view of the entire first embodiment, Fig. 2 is a longitudinal sectional view of the cutter portion of the second embodiment, and Fig. 3 is the cutting edge of the cutter. Figure 4 is a side view of the cutter's cutting edge.
FIG. 5 is a rear view of the cutting edge of the cutter. 1...Front shaft part, 2...Ballpoint refill,
3... Rear shaft portion, 4... Pipe body, 5... Lead metal, 6
... cutter, 7 ... slit, 8 ... inner cylinder, 9
... Magnet, 10 ... Long plate part, 11 ... Protrusion, 12
... spiral tube, 13 ... groove, 14 ... feeding device,
15... Sharp part at the tail end of the cutter, 16... Stopper, 17... Cap, 18... Point shaft, 19
...Magnet holding tube, 20...Tip opening.

Claims (1)

[Scope of utility model registration request] A rear shaft with a tip is rotatably fitted to the rear end of the front shaft, which is equipped with a writing device such as a sharp pencil or ballpoint pen, and the inner hole from this rear shaft to the tip shaft This spiral cylinder is equipped with an inner cylinder having an axial slit in the side wall, and a magnet is attached to the tip inside the inner cylinder, and a protrusion provided on the side edge passes through the slit in the inner cylinder and is fixed to the inner surface of the front shaft. The feeding device fitted into the groove is inserted, the pipe body is fixed to the tip opening of the tip, and a round bar-shaped cutter with a sharp rear end is slidably inserted into the inner hole of the pipe body. A writing instrument with a cutter whose rear end is brought into point contact with the magnet and held there by adsorption.