Straight-Line Pen Holder With Tapered Spring Mount
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Solution Overview
Problem
In mobile or field environments, users lack access to straightedges, making it difficult to draw straight lines with pens or pencils, resulting in unsatisfactory freehand drawings.
Innovation Solution
A straight-line pen holder with a body, armatures, cross braces, and touch points that supports a writing instrument in an upright position, allowing it to move over a surface in a straight line while resisting tipping and reducing friction, using a spring-loaded instrument holder and tapered design to securely hold and position the writing instrument.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a traditional pen holder is used in mobile environments, then the device is simple and portable, but the user cannot draw straight lines without a straightedge
Solution Approach 1:
The holder body is divided into multiple structural segments including left and right armatures, front and rear cross braces, and individual touch points. This segmentation allows each component to serve a specific function in maintaining geometric stability while keeping the overall device relatively simple and manufacturable.
Solution Approach 2:
The holder introduces intermediary geometric structures (cross braces and armatures) between the user's hand and the writing instrument. These intermediaries enforce straight line geometry by constraining the instrument's movement path, thereby achieving precision without requiring the user to directly maintain straight line alignment.
2Manufacturing precision
If the writing instrument is held upright for precise positioning, then line accuracy improves, but the holder becomes unstable and tips easily
Solution Approach 1:
The holder employs asymmetric geometry with the front cross brace being shorter than the rear cross brace, creating an isosceles triangular body shape when viewed from above. This asymmetric design optimizes the distribution of touch points to provide stable support for the upright writing instrument while preventing tipping during forward motion.
Solution Approach 2:
The holder extends stability support into the horizontal plane by distributing three touch points (one front, two rear) across the writing surface. This dimensional distribution creates a stable base that resists tipping in multiple directions while maintaining the upright orientation necessary for accurate line drawing.
3Stability of the object's composition
If the touch points are positioned to prevent tipping, then stability improves, but friction increases during forward motion
Solution Approach 1:
The touch points are strategically positioned at specific locations on the holder body - one at the front center and two at the rear - rather than being uniformly distributed. This localized positioning optimizes the balance between providing adequate stability to prevent tipping and minimizing contact area to reduce friction during forward motion along the drawn line.
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 precise and friction-reduced drawing of straight lines on various surfaces, including paper and device screens, with the pen holder's design ensuring stability and secure instrument placement, allowing for consistent and accurate line drawing.
Implementation Method 1
A spring may be fixedly attached to an interior of the bore and the writing instrument is inserted into the top of the instrument holder via the upper aperture and may pass through the spring of the bore of the instrument holder and exits at the bottom of the instrument holder via the lower aperture. The spring may be compressed by the outer surface of writing instrument to enable the writing instrument to extend downward through the bore and enable contact of the tip with the writing surface.
Data Source
AI summary
The marking device holder may comprise a body, an instrument holder, and a plurality of touch points. The marking device holder may be operable to move a writing instrument over a writing surface in a straight line. The writing instrument may detachably couple to the instrument holder such that the writing instrument contacts the writing surface. The plurality of touch points may form a stable base for the body that may resist tipping and may reduce friction during forward motion of the body. As non-limiting examples, the writing instrument may be a pen, a pencil, a mechanical pencil, a marker, or a stylus. As non-limiting examples, the writing surface may be paper or a device screen.