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Writing instrument

A technology of writing utensils and acting force, applied to writing utensils, writing utensil structure changes, printing, etc., can solve problems such as easy loss, damage, easy slack, misalignment, etc., to improve writing feeling, improve clamping force, improve The effect of friction

Inactive Publication Date: 2009-03-11
TOMBOW PENCIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, for any of the ballpoint pens in Patent Documents 1 and 2, the length of the pen clip is about 1 / 5 of the total length of the shaft of the body. Because it is relatively short, it is not only easy to fall off and lost, but also the depth of the pocket is not enough. sometimes the clip does not perform its function
[0005] In addition, regarding the clamping state of the ballpoint pen clamped to the cloth base such as the pocket, since the front end of the pen clip is prone to looseness, misalignment, etc., the opening and closing fulcrum of the pen clip and the pivot support part are easy to be overloaded, and there may be problems in these parts. breakage

Method used

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Examples

Experimental program
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Embodiment Construction

[0064] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0065] figure 1 An overall perspective view showing the protruding state of the pen tip of the ballpoint pen of the present invention; figure 2 Also represents a longitudinal section side view; image 3 A longitudinal sectional side view showing the storage state of the pen nib when the pen clip is opened; Figure 4 It also shows the enlarged perspective view of the main part of the shaft surface of the main body when the clip is opened; Figure 5 It also shows the enlarged three-dimensional view of the main part of the back of the pen clip when the clip is opened; Figure 6 A three-dimensional view showing the state of use of the ballpoint pen; Figure 7 A longitudinal sectional side view showing the state of being held in a pocket, etc. when not in use.

[0066] The writing implement of the present invention is a general term for a ballpoint pen, a mechanical ...

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Abstract

The invention provides a writing instrument, which avoids drop when ball pen nips on cloth. Concretely, head (2) of the ball pen is located in the front part (3a) of axis (3), penpoint (9) extends from the head (2), and length of nip (4) on back of the axis (3) is approximately same to the length from back end (3b) of the axis (3) to the front part (3a) of the axis (3).

Description

technical field [0001] The present invention relates to a writing implement with a clip. Background technique [0002] For example, as a push-type ballpoint pen for writing utensils, a pen clip is generally installed at the rear portion of the body shaft, and it is clamped on the pockets of clothes, shirts, etc., so that it is easy to carry. The clip is biased so that its front end comes into elastic contact with the surface of the shaft of the main body, thereby improving the gripping of the cloth substrate such as a pocket. [0003] As a method of applying an elastic force to the clip, some utilize the elastic deformation of the synthetic resin that makes the pen clip, and some use a leaf spring (for example, Patent Documents 1 and 2). [0004] However, for any of the ballpoint pens in Patent Documents 1 and 2, the length of the pen clip is about 1 / 5 of the total length of the shaft of the body. Because it is relatively short, it is not only easy to fall off and lost, but...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B43K29/00B43K25/02
CPCE04B2/72E04B2/7416E06B9/01
Inventor 田村悠太田英孝
Owner TOMBOW PENCIL CO LTD
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