JPS5842411Y2 - Chaco sharpener - Google Patents

Description

[Detailed description of the invention] This invention is a chaco sharpener that can sharpen the tip of chaco used for making marks in dressmaking etc. with a simple one-touch operation when the tip becomes rounded and becomes unusable. It is related to vessels.

The details will be explained below with reference to the embodiment shown in the drawings. 1 is a sharpener main body, which is made into an appropriate shape such as a cylindrical shape or a rectangular box shape, and the inside is hollow to accommodate the powder of the shavings. .

Reference numeral 2 denotes a cutting blade, which is made of metal plates formed into a comb-teeth shape, and is assembled into a V-shape by facing each other, and this is attached to the main body 1.

Each of the comb teeth 2a, 2a, .

2b... so that the upper surfaces of both blades form a V-shaped groove.

Each comb tooth 2a has an edge on its upper edge 3 so that it can be ground when the object to be ground (chaco) 4 is brought into sliding contact with the edge in a direction perpendicular to the edge (in the direction of arrow A).

In Figs. 1 and 2, reference numeral 5 denotes an end cover fitted to the end of the sharpener main body 1, and when this is removed, the hollow interior is opened and the powder accumulated inside can be freely taken out.

Incidentally, the powder outlet is not limited to the iron part, but can be provided anywhere such as the side or bottom.

6 is a holder for the main body 1, and when the main body 1 is cylindrical, the holder receiving part 6a is formed in an arc shape and supported freely in rotation, thereby making the groove-shaped cut part at an angle convenient for the user. Make it adjustable.

In the above configuration, the chakra to be ground is applied from the top of the main body 1 to the groove-shaped cutting part in a position parallel to the groove, and pressed downward by slightly reciprocating sliding in the longitudinal direction (arrow A). If you do so, the tip of the chaco will be elastically applied to the surfaces of the two V-shaped scraping blades 2, 2, and the comb teeth 2 will be pressed each time it slides.
The upper edge 3 of a is ground into a V shape.

The shaved powder falls into the hollow interior of the main body 1 from the space 2b between the comb teeth.

Conventional chaco sharpeners of this type include those made of plastic, those made with sandpaper, and those made with sandpaper, which are made by carving irregularities directly on the wall of the groove and small holes at the bottom of the V-shaped groove. It was common to use wire brushes with densely planted wires, but when chaco is oily due to its nature and is rubbed against the grinding surface, it quickly becomes clogged with powder from the shavings, resulting in premature failure. Not only does this have the drawback that the sharpener itself becomes unusable, but if the pressing force during grinding is even slightly too strong, the grinding part of the chaco will quickly break off, making it impossible to obtain an accurately sharp chaco. Because grinding of chaco requires a high level of skill, there has been a long-awaited need for a simple, quick, and reliable sharpener of this type.

The present invention addresses such conventional drawbacks, namely, as described above, a metal plate is formed into a comb tooth shape, and each comb tooth 2a is inserted into the space 2b between the opposing comb teeth, Since an edge is formed on the upper edge 3 of each comb tooth, if you slide the chaco back and forth once or twice without pressing it lightly, it will be scraped only when facing the edge, and the elasticity and bending force of the metal plate will be applied to the whole. In particular, the free edges of the comb teeth are elastically supported, there is no feeling of resistance, it absorbs shock, and it is possible to precisely grind Chaco, which tends to chip, into the specified shape. Since it is dropped, it does not cause any clogging, so it can be used sharply for a long time, and it has excellent practical effects such as easy sharpening of the sharpening blade, simple structure, durability, and low cost. You can expect it.

Although the present invention has been described as an embodiment with respect to a chalk sharpener, it can be similarly applied to other tools other than chalk sharpeners.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the sharpener of the present invention, FIG. 2 is a sectional view thereof, FIG. 3 is a partial plan view of the sharpening blade, and FIG. 4 is a partial perspective view of the sharpening blade alone. 1... Main body, 2... Sharpening blade, 2a...
...comb teeth, 2b...space.

Claims (1)

[Scope of utility model registration request] In a device in which two scraping blades are attached to the sharpener body in a V-shape facing each other, the scraping blades are formed of a metal plate of a constant thickness into a comb-teeth shape, and each comb tooth is connected between the comb teeth facing each other. A Chaco sharpener that is inserted into the space of and has an edge formed on the upper edge 3 of each comb tooth.