Ballpoint Pen Chip With Elastic Receiving Member for Line Width Control

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Solution Overview

Problem

Conventional ballpoint pen technologies require time-consuming adjustments to change writing line width and can lose balance due to inclination angle changes, making them impractical for efficient line width adjustment and stable writing.

Innovation Solution

A ballpoint pen chip with a cylindrical body, a transfer ball, and a receiving member featuring a reduction part that elastically contracts with pressing force, preventing radial deflection and allowing for stable ink flow and line width adjustment without the need for complex adjustments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the relative position of the bar stretching member is adjusted to change writing line width, then the writing line width changes, but the operation becomes time consuming and troublesome

Engineering Contradiction:

Improvewriting line width adjustmentVSAvoidoperation complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The receiving member is designed to dynamically change its length in response to pressing force applied during writing. The elastic portion allows the receiving member to extend or retract automatically based on the pressure applied to the transfer ball, enabling real-time writing line width adjustment without manual intervention. This dynamic adaptation resolves the contradiction by making the system self-adjusting rather than requiring time-consuming manual operations.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system uses the natural pressing force applied during writing to automatically adjust the receiving member's length and consequently the writing line width. The elastic portion of the receiving member responds autonomously to the user's writing pressure, eliminating the need for separate adjustment operations. This self-service mechanism allows writing line width adjustment to occur naturally during the writing process itself.

Inventive Principle:

Principle #25Self-service

2Adaptability or versatility

If the inclination angle of the chip is changed to adjust writing line width, then the writing line width changes, but the writing posture loses balance

Engineering Contradiction:

Improvewriting line width adjustmentVSAvoidwriting balance

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The receiving member's length is dynamically adjusted along the axial direction of the chip body, perpendicular to the writing surface inclination. This dynamic adjustment mechanism allows writing line width modification without changing the chip's inclination angle, thereby maintaining writing balance and posture stability while achieving the desired adaptability in line width.

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If the receiving member is made flexible to respond to pressing force, then writing line width adjusts easily, but the structure becomes more complex

Engineering Contradiction:

Improvewriting line width adjustmentVSAvoidreceiving member structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The receiving member incorporates an elastic portion that functions as a flexible structural element. This elastic portion can be made from elastomeric materials or configured as a thin-walled structure that naturally bends or extends in response to pressing force. This approach achieves easy writing line width adjustment through material properties rather than complex mechanical mechanisms, resolving the contradiction between operational ease and structural complexity.

Inventive Principle:

Principle #30Flexible shells and thin films

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables easy and stable adjustment of writing line width based on pressing force, maintaining balance and ensuring consistent ink flow, reducing operational complexity and improving user experience.

Implementation Method 1

a portion of the receiving member further on a rear side than the reduction part is unretreatably fixed to the chip body and configured to elastically contract when a pressing force is received from the transfer ball

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS10155410B2Ballpoint pen chip and writing utensil equipped with the ballpoint pen chip

Publication Date: 2018.12.18 ZEBRA

AI summary

To make it possible to easily change a writing line width.A ballpoint pen chip that brings a front half part side of a transfer ball into contact with an inward annular protrusion on a front end side in a chip body from a backward side of the inward annular protrusion and receives a rear half part side of the transfer ball with a front end part of a receiving member. The receiving member includes, on a front end side thereof, a reduction part gradually reduced in a cross-sectional area forward. A front-most end part of the reduction part is disposed backward from the transfer ball. A portion of the receiving member further on a rear side than the reduction part is unretreatably fixed to the chip body and configured to elastically contract when a pressing force is received from the transfer ball.