Mechanical pencil

A technology for mechanical pencils and refills, applied in mechanical pencils, printing, writing utensils, etc., can solve the problems of not easy to observe the existence of refills, not easy to confirm, etc.

Active Publication Date: 2020-10-20
PILOT PEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In this JPS61-78685U, the refill in the refill tank is directly seen and confirmed from the window, but generally speaking, the diamet

Method used

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  • Mechanical pencil
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Examples

Experimental program
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Embodiment Construction

[0040] Hereinafter, the mechanical pencil 1 of this embodiment will be described in detail with reference to the drawings.

[0041] figure 1 It is a longitudinal sectional view showing a state in which a spare refill 91 is provided in the refill tank 8 in the mechanical pencil 1 of the present embodiment, figure 2 yes figure 1 The A1-A1 cross-sectional view of the mechanical pencil 1, image 3 is shown in figure 1 A longitudinal sectional view of a state in which there is no spare refill 91 in the refill tank 8 of the mechanical pencil 1, Figure 4 yes image 3 The A3-A3 cross-sectional view of the mechanical pencil 1, Figure 5 yes image 3 B3-B3 cross-sectional view of Mechanical Pencil 1.

[0042] In addition, in this specification, the direction in which the central axis of the mechanical pencil 1 extends (longitudinal direction, vertical direction in a longitudinal sectional view) is the axial direction, the direction perpendicular to the axial direction is the ra...

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PUM

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Abstract

Provided is a mechanical pencil that smoothly supplies a lead to a chuck with a small inside diameter of a lead tank and makes it possible to easily confirm the presence or absence of a spare lead inside the lead tank and a consumption status of the lead from an outside. A mechanical pencil (1) has a display body (15) that contacts a rear end of a lead (9) accommodated in a lead tank (8), the display body being arranged to be movable back and forth in an axis direction inside a shaft cylinder. As the last lead inside the lead tank moves forward, the display body contacting a rear end of a spare lead (91) moves forward to follow the last lead. The shaft cylinder has a window part (2b) that makes it possible to visually recognize a movement state of the display body from an outside of the shaft cylinder. The display body is provided with a lead contact part (15c) that is inserted in or released from the lead tank and contacts a rear end of a lead accommodated in the lead tank and a display part (15b) that is provided at the rear of the lead contact part. Assuming that the axis direction of the mechanical pencil is a vertical direction and that a width of the display part is X and a width of the lead contact part is Y when the window part is seen in a front view, X and Y have the relationship X > Y.

Description

technical field [0001] The present invention relates to mechanical pencils. Background technique [0002] Conventionally, a mechanical pencil is known in which a refill tank is built inside a shaft barrel, a chuck is provided in front of the refill tank to store the refill in the refill tank. , When writing on paper or the like while pressing the rear end of the mechanical pencil so that the pen core protrudes from the front end opening of the shaft barrel, the pen core is consumed by writing. When the core in the core tank is used up, the user will New refills are added to the refill tank. [0003] In such mechanical pencils, when the inner diameter of the lead case is large, it is difficult to smoothly supply the lead to the cartridge, and therefore the inner diameter of the lead case is often reduced. [0004] On the contrary, when the inner diameter of the refill tank is small, only a small amount of refill can be accommodated in the refill tank, and the refill needs t...

Claims

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Application Information

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IPC IPC(8): B43K21/00
CPCB43K21/00B43K21/003B43K21/006B43K21/16
Inventor 濑利伸一
Owner PILOT PEN CO LTD
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