Ball point pen

A technology for ballpoint pens and ballpoint pen tips, applied to ballpoint pens, printing, writing utensils, etc., can solve the problems of pen tip shaking, reduce writing feeling, pen tip swing, etc., and achieve the effect of easy replacement

Inactive Publication Date: 2007-09-05
MITSUBISHI PENCIL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the length of the joint is long or it is long in the axial direction (from front to back), the nib is likely to swing due to the deformation of the joint part itself
[0004] In addition

Method used

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  • Ball point pen
  • Ball point pen
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] Embodiments of the invention are shown in FIGS. 1 , 2 , 3 and 4 .

[0021] With reference to Fig. 1 at first, ball-point pen of the present invention comprises the outer tube 16 that its front and rear end openings have rod-like cylindrical shape, the mouthpiece 2 that thread is assembled on the front end of outer tube 16 and the ball-point pen refill that is contained in outer tube 16 the inside 3. In this embodiment, the barrel shown at 1 consists of a mouthpiece 2 and an outer sleeve 16 . Here, the mouthpiece 2 does not have to be formed as a separate component, but can be formed integrally with the outer sleeve 16 .

[0022] The pen holder 1 has a ventilation hole or a ventilation slot, which is formed by drilling a ventilation hole through the pen holder 1 to the inside at a suitable position or by forming a groove at the threaded portion on which the mouthpiece 2 is fixed. . A ventilation hole communicating with the interior of the barrel may also be formed on ...

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PUM

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Abstract

To provide a ball-point pen capable of suppressing the backlash of a pen point and capable of obtaining a good writing feeling. The ball-point pen comprises a ball-point pen tip 4 having a writing ball 13 held to the leading end thereof in a rotatable manner, a shaft cylinder 1 having a through-hole 14 formed to the leading end thereof to house an ink housing part 17 and constituted so as to protrude the ball-point pen tip 4 from the through-hole 14 and a resin joint for connecting the ball-point pen tip 4 and the ink housing part 17 and having contact parts (5c and 6e) coming into contact with an ink guide hole 12 for guiding ink to the ball-point pen tip 4 and the leading end of the shaft cylinder 1. The contact parts are formed at a plurality of places in an axial direction.

Description

technical field [0001] The invention relates to a ball-point pen with a ball-point pen refill in the pen barrel. Background technique [0002] As a method of suppressing the recoil of the pen point due to the gap between the ballpoint pen point and the nozzle hole, Japanese Utility Model Application Laid-Open Hei-6-83376 discloses a structure in which a structure with a plurality of An integral joint formed of elastically deformable resin molding of tapered ribs extending longitudinally and the mouthpiece threadedly fitted so that a stepped portion in the mouthpiece engages the longitudinal ribs of the joint, thereby preventing gapping of the nib. [0003] However, when the length of the joint is long or long in the axial direction (from front to back), the pen point is likely to swing due to deformation of the joint portion itself. [0004] In addition, when the joint is formed of a plurality of parts, the fitting part between the joint parts may rattle, causing the nib to...

Claims

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Application Information

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IPC IPC(8): B43K7/00B43K7/02
Inventor 中岛淳
Owner MITSUBISHI PENCIL CO LTD
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