KR200182838Y1 - Apparatus for Withdrawing of Lead in Sharp Pencil - Google Patents

Abstract

The present invention relates to a drawing device of a sharp shim. In the conventional mechanical pencil, the inner core is drawn out to the outside when the button installed on the top or the side is strongly pressed, and the drawing length is uncertain, and there is a need for frequent pressing.

The present invention is a recess 13 of the elastic roller 9 when rotating the elastic roller (9), which is provided to expose part of the lower side of the sharp (1) upwards by finger operation. Is rotated by being pressed in the state of surrounding the sharp shim 41, so that the sharp shim 4 'is drawn out of the clamping tube 8 by the frictional force, and the clamping tube is rotated when the elastic roller 9 is rotated in the opposite direction (downward). (8) To perform the dysfunction that immerses the sharp shim (4 ') inside. In addition, the sharp shim 4 'breaks in the hollow portion 10 as the sharp shim 4' wears in the slightly longer pinching tube 8, so that the shim 4 'is not broken. In addition, there is an effect that the frequency of rotating the elastic roller 9 is also reduced.

Description

Sharp Sim's Drawer {Apparatus for Withdrawing of Lead in Sharp Pencil}

The present invention is designed for the purpose of pushing the sharp core by the worn length whenever the sharp shim is worn and the bottom length thereof becomes short when writing with a pencil. Conventional sharp shim not only breaks frequently, but when the bottom of the shim wears too short, there is the hassle of pressing the top of the sharp top or the bottom side of the sharp frequently to pull out the shim properly, and when the shim breaks, it becomes a pollution factor that pollutes the surroundings. There was this.

The present invention has been devised to eliminate the drawbacks of the prior art as described above to draw a good writing length by rolling the roller by finger operation so that the core does not break in proportion to the amount of sharp seam wear.

1 is a longitudinal cross-sectional view of the present invention

FIG. 2 is an enlarged plan view as seen from line A-A of FIG.

3 is an enlarged cross-sectional view showing a state in which an elastic roller is pressed against a sharp core;

Explanation of symbols on the main parts of the drawings

1: Sharp 2: Appearance 3: Inner Tube 4: Sharp deep ball 4 ': Sharp deep

5 funnel body 5 'cutout 6 conical tube 6' center hole

7 flange 8 clamping pipe 9 elastic roller 10 hollow part

DESCRIPTION OF SYMBOLS 11: Bearing band 12: Shaft hole 13: Auxiliary part 14: Shaft

Sharp (1) of the present invention has a funnel (5), a conical tube (6) and a flange (7) formed with an exterior (2), an inner tube (3), and a sharp core hole (4). It is comprised from the clamping pipe 8 and the elastic roller 9. As shown in FIG.

A sharp sharp hole 4 and a notch 5 'such that the sharp shim 4' freely falls into the lower hole of the inner tube 3 embedded in the outer tube 2 of the sharp 1, and The hollow funnel body 5 of the end formation is closely enclosed, and the hollow part 10 which is low in the bare end of the funnel body 5 and the spiral wall inside the exterior 2 is formed. The conical tube 6 is inserted so that the conical tube 6 is formed, and the narrow pinned tube 8 holding the sharp shim 4 'is inserted into the central hole 6' at the bottom of the hollow 10 of the conical tube 6. 축) around the funnel body 5 having a semicircular cross section with one cutout portion 5 'wrapped around the U-shaped bearing band 11 and fixed with a rivet 17, and a shaft hole installed at the tip end thereof. In the convex portion 12, the recess 13 formed on the middle line of the elastic roller 9 is press-contacted to the sharp core 4 '(to the extent that it is difficult to pull the sharp core vertically upward). The shaft 14 of the elastic roller is formed through the lower cutouts of the exterior 2 and the inner tube 3. But a shovel, to an hayeoseo part of the elastic roller 9 is exposed out of the facade (2). Reference numeral 15 denotes a stopper formed on a grip, and 16 denotes a rubber eraser.

In carrying out the present invention, the shaft hole 12 of the tip of the bearing band 11 may be installed in the front end of the bracket protruding from both walls of the same as the funnel body 5.

Referring to the operation of the present invention configured as described above in detail as follows.

When the sharp core 4 'is introduced into the sharp core hole 4 of the conical inlet above the funnel body 5 inserted below the inner tube 3 on the sharp center line, an elastic roller (9) is stopped at the recess 13. However, when the elastic roller 9 exposed to the outside of the exterior 2 is pushed up and driven by a finger operation, the urging portion 13 of the elastic roller 9 is pressed against the sharp core 14 '. (Iii) the sharp core 4 'is pushed downward by the frictional force and is inserted into the center hole 6' of the bottom surface through the hollow portion 10 of the conical tube 6 by the frictional force. (8) Enter the ball. At this time, since the flange 7 of the upper end of the clamping pipe 8 is blocked by the center hole 6 'of the conical pipe 6 and does not fall out, only the sharp shim 4' is drawn outward.

However, the sharp (1) is tilted by 45 ° to write the letter, so the sharp shim (4 ') does not push in the reverse direction (逆). When the elastic roller 9 is rolled in the opposite direction (below) as described above, the sharp shim 4 'rises slightly above the hollow portion 10 together with the clamping tube 8, and the flange 7 of the funnel body 5 Because it hits the bottom of the) only the sharp seam (4 ') to perform the reverse function to immerse into the deep hole (4). In practice, however, it is sufficient to immerse the sharp shim 4 'in the narrow tube 8 only. And since the sharp core 4 'contacts only the recessed part 13 formed in this elastic roller 9, the finger which turns the elastic roller 9 is not dirty, and it is very hygienic. In addition, in the hollow part 10, since the pinching tube 8 and the sharp shim 4 'have time to move together, it is unnecessary to turn the elastic roller 9 cumbersomely.

Therefore, the shorter the height of the hollow portion 10, the more frequently the frequency of turning the elastic roller (9).

When the elastic roller 9 exposed to the outside of the exterior 2 is electrically driven upward or downward by the manipulation of a finger, the urging portion 13 of the elastic roller 9 is pressed and rotated while wrapping the sharp core 4 '. Therefore, the sharp seam 4 'has the effect of freely performing the function of drawing out or immersing in the outside of the gripping tube 8 by the frictional force, and the gripping tube 8 has a sharp shim inside thereof. Since the inside of the hollow portion 10 is raised and lowered in the state of holding the 4 ', the rolling frequency of the elastic roller 9 is reduced and the core 4' is not broken. have.

Claims (1)

A funnel body having a sharp core 4, a cutout 5 ', and a Nathan formed in a lower hole of the inner tube 3 contained in the outer shell 2 of the sharp 1; (5) is tightly indented, and the conical tube 6 is inserted into the lower end of the funnel body 5 and the inner wall of the outer shell 2 so that a low hollow portion 10 is formed. Around the funnel body 5 of the semicircular cross section in which the narrow pinned tube 8 is inserted in the hollow center part 10 'bottom center hole 6' of the pipe 6, and one cutout part 5 'is formed. Is wrapped around the U-shaped bearing band 11 and fixed to the shaft hole 12 of the distal end thereof. The yaw portion 13 formed on the middle line of the elastic roller 9 is pressed against the sharp core 4 'to rotate the shaft 14. Sharp seam drawer, characterized in that the part of the elastic roller (9) is exposed outside the appearance (2)