JP2869769B2 - Manual pencil sharpener - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a manual pencil sharpener.

[0002]

2. Description of the Related Art Conventionally, there has been no manual pencil sharpener capable of adjusting the thickness and length of a pencil core by a simple operation.

[0003]

SUMMARY OF THE INVENTION According to the present invention, the thickness and length of a pencil lead can be adjusted by a simple operation , and
An object of the present invention is to provide a novel manual pencil sharpener capable of easily removing a lead .

[0004]

In order to achieve the above object, a manual pencil sharpener according to the present invention is provided with a rotatable dial 3 on a side portion of a case body 2 and a center of the dial 3.
The part can be rotated integrally with the dial 3, but the dial 3
Push button 17 that can slide independently in the axial direction
And a core contact piece 7 movable inside the case body 2 at a position facing the tip of the pencil 5 inserted into the pencil insertion hole 1 with respect to the shaving blade 4 attached to the inner surface of the pencil insertion hole 1. A cam portion 22 displaced in the axial direction is attached to the core contact piece 7.
The cam portion 22 and the inner surface of the push button 17
The dial 3 is turned by contacting the ribs 19 provided.
A slide camera that converts rolling motion into linear motion of the core contact piece 7
The leading end of the lead 6 of the pencil 5 that contacts the front surface of the lead contact piece 7 is changed by moving the lead contact piece 7 forward or backward by rotating the dial 3 so that the lead 6 The thickness and length of the shavings can be adjusted.

[0005]

When the dial 3 is rotated, the core contact piece 7 moves linearly and is displaced with respect to the cutting blade 4. The lead contact piece 7 is positioned so as to face the tip of the pencil 5 inserted into the pencil insertion hole 1 and contacts the tip of the lead 6, so that the position of the lead 6 is regulated. Therefore, the displacement thickness of the core contact piece 7 also changes the shaving thickness and length of the core 6. This allows
By turning the dial 3, the shaving thickness and length of the core 6 can be easily adjusted.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
I do. A pencil insertion hole 1 is formed at an end of one side surface of a plastic case main body 2, and a stainless steel cutting blade 4 is attached to an inner surface thereof. Case body 2
On the side opposite to the side where the pencil insertion hole 1 was provided,
The dial 3 is rotatably attached to the case body 2. The dial 3 has an axial groove 15 on the inner surface. The dial 3 has a center hole 16 and the center hole 1.
6 is provided with a push button 17. The push button 17 has a projection 18 on the outer surface, and the projection 18 is fitted into the groove 15 provided on the inner surface of the dial 3.
Therefore, the dial 3 and the push button 17 rotate integrally, but the push button 17 is slidable in the axial direction with respect to the dial 3 and can advance independently. A rib 19 is provided on the inner surface of the push button 17. A core contact piece 7 is arranged in the interior of the case body 2 behind the pencil insertion hole 1 and at a position in front of the push button 17. The core contact piece 7 is stopped from rotating by the case body 2. The core contact piece 7 has a narrow groove 11 on the side surface, and the cutting blade 4 is movably fitted into the narrow groove 11. The core contact piece 7 is provided integrally with a slide cam 21 via a shaft portion 20 at the rear. As shown in FIG. 3 , the slide cam 21 has a cam portion 22 that is displaced in the axial direction on a peripheral side surface. The slide cam 21 is pressed rearward by the return spring 10, and the tip of a rib 19 provided on the inner surface of the push button 17 is brought into contact with the cam portion 22.

As shown in FIG. 1 , when the dial 3 is turned, the push button 17 is also turned integrally. On the other hand, since the slide cam 21 cannot be rotated integrally with the core contact piece 7, the rotation of the push button 17 causes the rib 1 to rotate.
9 slides on the cam portion 22 of the slide cam 21.
As a result, the slide cam 21 is displaced in the axial direction, so that the core contact piece 7 also moves linearly in the front-rear direction, and is displaced with respect to the cutting blade 4. Since the tip of the lead 6 of the pencil 5 inserted into the pencil insertion hole 1 comes into contact with the front surface of the lead contact piece 7, if the position is changed, the shaving thickness of the lead 6 of the pencil 5 and The length can be varied. Therefore, the shaving thickness and length of the lead 6 of the pencil 5 can be adjusted by rotating the dial 3. It is convenient to engrave a scale on the dial 3 as a measure of the shaving length. Since the push button 17 is advanceable by a required amount into the interior direction of the separate casing body 2 and the dial 3, as described above, the push button 17, as shown in FIG. 2, against the return spring 10 When pushed inward, the core contact piece 7 also moves immediately together with the push button 17, and the bent core 14 clogged in the back of the pencil insertion hole 1.
Can be pushed out and eliminated.

[0008]

The present invention is as described above.
A simple operation of rotating the core contact piece 7
Is displaced with respect to the shaving blade 4, so that the shaving thickness and length of the core 6 can be easily adjusted. Also push
To move the core contact piece 7 by pushing the button 17
As a result , the convenience that the core 14 can be easily discharged can be obtained.
There is .

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state where a dial is rotated.

FIG. 2 is a cross-sectional view showing a state where a push button is pushed.

FIG. 3 is a development view of a cam portion of the slide cam.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pencil insertion hole 2 Case main body 3 Dial 4 Sharpener 5 Pencil 6 Core 7 Core Contact piece 10 Return spring 11 Narrow groove 14 Folding core 15 Groove 16 Center hole 17 Push button 18 Projection 19 Rib 20 Shaft 21 Slide cam 22 Cam

Claims (1)

(57) [Claims] 1. A rotatable dial 3 is provided on a side surface of a case body 2, and the dial 3 is
It is rotatable integrally, but is axially independent of dial 3.
An upright slidable push button 17 is provided on the sharpening blade 4 attached to the inner surface of the pencil insertion hole 1 at a position facing the tip of the pencil 5 inserted into the pencil insertion hole 1 inside the case body 2. core contact piece 7 movable provided, the core contact co against
The cam 7 has a cam portion 22 which is displaced in the axial direction.
22 is provided with a rib 19 provided on the inner surface of the push button 17.
The contact of the dial 3 with the core
The slide cam 21 that converts the linear motion of the
The leading end position of the lead 6 of the pencil 5 that contacts the front surface of the lead contact piece 7 is changed by moving the lead contact piece 7 forward or backward by rotating the dial 3, so that the shaving thickness and length of the lead 6 are changed. Manual pencil sharpener with adjustable height.