JP3078659U - Pencil sharpener - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a pencil sharpener capable of sharpening two kinds of pencils having different thicknesses. The present invention is characterized in that two sharpening holes (2, 3) having different inner diameters and having sharpening blades (4, 5) mounted therein are provided therein.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a pencil sharpener.

[0002]

[Prior art]

 The conventional pencil sharpener has a structure having only one pencil sharpening hole with a sharpening blade mounted inside.

[0003] The conventional pencil sharpeners as described above are designed on the premise that the thickness of all pencils is constant. Therefore, when a pencil having a different thickness appears, there is a problem that the pencil cannot be sharpened.

[0004]

[Problems to be solved by the invention]

 Therefore, an object of the present invention is to provide a pencil sharpener capable of shaving two types of pencils having different sizes.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, the pencil sharpener of the present invention is characterized in that two pencil sharpening holes 2, 3 having different inside diameters, in which the sharpening blades 4, 5 are attached, are provided inside. It has a configuration.

Further, the pencil sharpener of the present invention described above can be moved in the axial direction of the pencil inserted into the pencil sharpening holes 2 and 3 at positions deep inside the two pencil sharpening holes 2 and 3 respectively. A configuration in which the two brush tip abutting members 7, 8 are arranged integrally, and the two pencil tip abutting members 7, 8 are united integrally so that a single operation member can move the two. It is also possible.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. First, as shown in FIG. 1 and FIG. 2, two pencil sharpening holes 2 and 3 are opened in the side surface of the case 1. As shown in FIG. 2, these two pencil sharpening holes 2 and 3 have shaving blades 4 and 5 respectively mounted inside. 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 shaving holes 2 and 3 and the position where only the entrance of one pencil shaving 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 capable of 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 positions behind the two pencil sharpening holes 2 and 3, respectively, and the axes of the pencils The pencil tip abutting members 7, 8 which can be respectively moved along the shaving blades 4, 5 in the direction can be arranged. 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 back of the pencil shaving holes 2 and 3, the core of the pencil can be sharpened finely and the entrances of the pencil shaving holes 2 and 3 on the opposite side can be cut. By moving it to the direction, the pencil lead can be sharpened sharply.

Although the mechanism for moving the above-mentioned pencil tip abutting 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 arranged 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 coma 9 is stopped and the operation ball 13 is rotated, the cam inclined surface contact portion 14 slides on the cam inclined surface 10 of the displacement coma 9 and the displacement coma 9 is displaced. The pencil tip contact members 7 and 8 which are in contact with the top 9 also move together with the displacement top 9. The displacement piece 9 can be moved 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 lead is broken inside the pencil sharpening holes 2 and 3, a mechanism for removing the broken lead can be provided. It is possible to use the above-mentioned lead brush tip abutting members 7 and 8 as the bent core eliminating mechanism. That is, it is possible to extrude the fold core with 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. Then, by pushing the head of the push button 15 inward of the case 1, the pencil tip contact members pieces 7, 8 move toward the entrances of the pencil shaving holes 2, 3, and push out the folding core. Such a configuration can be adopted.

[0012]

[Effect of the invention]

 The pencil sharpener of the present invention described in claim 1 has the advantage of being able to sharpen two types of pencils having different sizes as described above.

Further, in the pencil sharpener of the present invention described in claim 2, the thickness of the pencil core to be sharpened by the two pencil sharpening holes 2 and 3 can be freely adjusted. In addition, the operation of moving the two pencil tip abutting members 7, 8 disposed inside the two pencil sharpening holes 2, 3 can be performed by one operating member, so that the operation is not confusing and easy to understand. This has the advantage that the number of parts can be prevented from increasing.

[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 Merging part 12 Spring 13 Operation ball 14 Cam slope Contact part 15 Push button 16 Lid

Claims (2)

[Utility model registration claims] 1. A pencil sharpener comprising 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 united together so that the two can be moved by one operating member.