JP2002192892A - Pencil sharpener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pencil sharpener which can sharpen two kinds of pencils having large and small diameters. SOLUTION: Two pencil-sharpening hole parts having large and small inner diameters wherein sharpening edges 4 and 5 are respectively attached to insides are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a pencil sharpener.

[0002]

2. Description of the Related Art A conventional pencil sharpener has a structure having only one pencil sharpening hole having a sharpening blade mounted therein.

The conventional pencil sharpeners as described above are designed on the assumption that the thickness of all pencils is constant. Therefore, if pencils of different thickness appear,
There is a problem that the pencil cannot be sharpened.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a pencil sharpener capable of shaving two kinds of pencils having different thicknesses.

[0005]

In order to solve the above-mentioned problems, a pencil sharpener according to the present invention has a sharpening blade 4, 4 inside.
5, two pencil sharpening holes 2 with different inner diameters
3 is provided.

Further, the above-mentioned pencil sharpener of the present invention can be freely moved in the axial direction of the pencil inserted into the two pencil sharpening holes 2 and 3 respectively at positions deep inside the two pencil sharpening holes 2 and 3. It is also possible to arrange the two pencil tip abutting members 7 and 8 so that the two pencil tip abutting members 7 and 8 are united integrally to enable the movement operation of both by one operating member. It is possible.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First, as shown in FIGS. 1 and 2, two pencil sharpening holes 2 and 3 are provided side by side on the side surface of the case 1. These two pencil sharpening holes 2, 3
Has shaving blades 4 and 5, respectively, as shown in FIG. The two pencil sharpening holes 2 and 3 have different inner diameters. Thus, a thick pencil can be sharpened by the pencil shaving hole portion 2 having a larger inner diameter, and a thin pencil can be sharpened by the pencil shaving hole portion 3 having a smaller inner diameter.

A slide cap 6 that can open and close the entrances of the two pencil sharpening holes 2 and 3 can be attached to the side surface of the case 1. The slide cap 6 simultaneously closes the entrances of the two pencil sharpening holes 2 and 3, and the position where only the entrance of one pencil sharpening hole 2 is closed and the entrance of the other pencil sharpening hole 3 is opened. It is possible to adopt a structure in which only the entrance of the other pencil sharpening hole 3 is closed and stopped and locked at a position where the entrance of the one pencil sharpening hole 2 is opened. Further, a lid 16 that can be opened and closed can be provided on the top surface or the bottom surface of the case 1 so that shavings accumulated inside the case 1 can be discharged.

[0009] The pencil sharpener can include a mechanism for adjusting the thickness of the core of the pencil to be sharpened. As the members constituting the mechanism, the tips of the pencils inserted into the pencil sharpening holes 2 and 3 can abut on the depth positions of the two pencil sharpening holes 2 and 3, respectively, and can be in the axial direction of the pencils. Pencil tip abutting members 7 and 8 that can move along the cutting blades 4 and 5, respectively, can be provided. These two pencil tip abutting members 7 and 8 can be united and integrally formed as shown in the figure. By moving these pencil tip abutting members 7 and 8 toward the depth of the pencil shaving holes 2 and 3, the lead of the pencil can be sharpened finely. By moving it to the side, the pencil core can be sharpened sharply.

Although the mechanism for moving the above-mentioned pencil tip contact members 7 and 8 is free, as an example, as shown in the figure, a displacement piece 9 having a cam slope 10 formed on the outer peripheral surface is provided inside the case 1. Can be provided. The displacement piece 9 is movable in the same direction as the above-mentioned pencil tip contact members 7 and 8. Then, the united portion 11 of the pencil tip contact members 7 and 8 is pressed against the displacement piece 9 by the spring 12 so that the pencil tip contact members 7 and 8 and the displacement piece 9 can be moved together. Further, it is necessary to provide an operation member for moving the displacement piece 9, but an operation ball 13 as shown in the figure can be used as an example of this operation member. The operation ball 13 can be disposed inside the case 1 so that a part thereof is exposed to the outside of the case 1. The operation ball 13 is rotatable and has a cam slope contact portion 14 (see FIG. 3) that comes into contact with the cam slope 10 of the displacement piece 9 described above. That is, when the displacement piece 9 is stopped from rotating and the operation ball 13 is rotated, the cam slope contact portion 14 of the displacement piece 9 is
By sliding on the displacement piece 9, the displacement piece 9 is displaced, and the pencil tip contact members 7, 8 in contact with the displacement piece 9 move together with the displacement piece 9. The displacement piece 9 can be moved by using the cam mechanism as described above, but can also be moved by another mechanism. For example, a screw feed mechanism can be used. As the operation member, a dial or the like can be used instead of the operation ball 13 described above.

Further, when the pencil core is broken inside the pencil shaving holes 2 and 3, a mechanism for removing the broken core can be provided. It is possible to use the above-mentioned pencil tip abutting members 7, 8 as the broken core removing mechanism. That is, it is possible to employ a configuration in which the fold core is pushed out by the pencil tip contact members 7 and 8. For example, as shown in the drawing, a push button 15 that extends through the displacement piece 9 and the operation ball 13 and further projects the head to the outside of the case 1 is provided in the united portion 11 of the pencil tip contact members 7 and 8. By pushing the head of the push button 15 inward of the case 1, the pencil tip abutting member pieces 7, 8 move in the direction of the entrance of the pencil shaving holes 2, 3 to push out the folding core. It can be configured.

[0012]

According to the first aspect of the present invention, there is provided a pencil sharpener,
As described above, there is the convenience that two types of pencils having different sizes can be sharpened.

In the pencil sharpener according to the second aspect of the present invention, it is possible to freely adjust the thickness of the pencil core to be sharpened by the two pencil sharpening holes 2 and 3, respectively. Also, those 2
The movement of the two pencil tip abutting members 7, 8 arranged inside the two pencil shaving holes 2, 3 can be performed by one operating member, so that the operation is not confusing and is easy to understand. There is an advantage that an increase in points can be avoided.

[Brief description of the drawings]

FIG. 1 is a perspective view.

FIG. 2 is a cross-sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Pencil shaving hole part 3 Pencil shaving hole part 4 Sharpening blade 5 Sharpening blade 6 Slide cap 7 Pencil tip contact member 8 Pencil tip contact member 9 Displacement piece 10 Cam slope 11 Combined part 12 Spring 13 Operation ball 14 Cam slope Contact part 15 Push button 16 Lid

Claims (2)

[Claims] 1. A pencil sharpener having two sharpening holes 2, 3 having different inner diameters, each having a sharpening blade 4, 5 mounted therein. 2. Pencil tip abutting members 7, 8 which are movable in the axial direction of a pencil inserted into the pencil shaving holes 2, 3, respectively, at positions behind the two pencil shaving holes 2, 3. The pencil sharpener according to claim 1, wherein the two pencil tip abutting members (7, 8) are integrally united so that the two can be moved by one operating member.