JPS6319190Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vertical pencil sharpener having a vertical pencil insertion slot, and is intended to prevent the cutting surface of the pencil from becoming dirty by improving the scrap scraping rib.

In general, so-called vertical pencil sharpeners with a vertical pencil insertion slot have a scrap scraping rib on one side of the rotating cutter holder, and the scrap scraping rib drops the scraps into a scrap tray on the side. It is configured as follows.

By the way, the scrap scraping rib is provided at the rear of the cutter to scrape out the scraps cut by the cutter, and when the scrap container is full of scraps, it stirs the scraps and collects them into the cutter section.
For this reason, in the cutter part, the cutting surface of the pencil became black with lead waste, and a clean cutting surface could not be obtained.

Furthermore, as described in Japanese Utility Model Application Publication No. 53-100047, there was also a device that had a scrap scraping rib at the opposite position from the cutter, but with this structure, the scrap receiving box was not filled with cutting scraps. When the pencil is worn out, even if the scrap scraping rib once brushes away the scraps, by the time the cutter passes through this portion, the scraps that have been brushed off come back again, staining the cutting surface of the pencil.

The present invention is intended to eliminate such drawbacks, and will be explained below based on the drawings showing one embodiment.

In FIGS. 1 and 2, 1 is a main body case, which together with a base 2 constitutes an outer casing. 3 is a waste receptacle provided on one side of the main body case 1. 4
is a cutting mechanism installed vertically in the case 1 close to the scrap receptacle 3, and includes a cutter holder 5 whose upper and lower ends are pivoted and rotated via a gear (not shown), etc. It consists of a cutter 9 which is pivotally supported on a cutter holder 5 by a support shaft 6 and rotated by an internal gear 7 and a pinion 8. A scrap scraping rib 10 is provided on one side of the cutter holder 5 in the vertical direction. As shown in FIG. 3, this scrap scraping rib 10 is provided at a position approximately 90 degrees in front of the cutter 9 with respect to the rotational direction of the cutter holder 5.

In the pencil sharpener configured in this way, when the cutter holder 5 rotates, the cutter 9 cuts the pencil while rotating around the pencil (not shown), and the cutting waste is discharged between the inner walls of the case 1. The waste is collected in the direction of the waste receptacle 3 by the waste scraping rib 10.

Here, when the scrap scraping rib 10 is located near the rear of the cutter 9 with respect to the rotational direction of the cutter holder 5, when a large amount of cutting debris accumulates in the scrap receiver 3, the scrap scraping rib 10 scrapes it toward the cutter 9. The cutting surface of the pencil becomes black and stained, but in the present invention, the scrap scraping rib 10 is positioned forward of the cutter 9 in the rotational direction of the cutter holder 5, so that the scrap scraping rib 10 removes the scrap. Since the cutter 9 moves, the cutting surface of the pencil is not contaminated by cutting debris.

In order to produce this effect, it is necessary that the angle between the scrap scraping rib 10 and the cutter 9 relative to the rotating direction of the cutter holder 5, that is, the angle α shown in FIG. 3, is 60° to 120°. It was hot. In other words, if the angle α is less than 60°, it will be difficult to discharge the scraps from the cutter 9 during cutting, and if it exceeds 120°, even if you scrape out the scraps with the scraper rib, the amount will return again. This is because there will be more.

As described above, the present invention prevents staining of the pencil cutting surface by devising the location of the scrap scraping rib on the cutter holder, and has a great practical effect as a vertical pencil sharpener of this type.

In the above-mentioned embodiment of the present invention, the scrap scraping rib is provided integrally with the cutter holder, but the same effect can be obtained even if a separate rib is attached to the cutter holder.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional side view of the pencil sharpener of the present invention, Figure 2
The figure is a side view of the same cutter mechanism, and FIG. 3 is a cross-sectional view of the same main part. 1...Main body case, 2...Base, 3...Scrap tray, 4...Cutting mechanism, 5...Cutter holder,
9... cutter, 10... rib scraping.

Claims (1)

[Scope of utility model registration request] A cutter holder is provided inside the main body case close to the waste receptacle and is pivotably supported at both upper and lower ends so as to be rotatable, and outside the cutter holder, and
A pencil sharpener that has a scrap scraping rib located 60° to 120° in front of the cutter with respect to the direction of rotation of the cutter holder.