Pencil With Recessed Grips On Three-Surface Body
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Solution Overview
Problem
Existing writing, painting, or drawing pens lack ergonomic design and secure grip handling, particularly after sharpening, which affects user comfort and control.
Innovation Solution
The pen features recessed grips on at least two of its three gripping surfaces, arranged longitudinally and spirally around the pen, providing secure support for all fingers and maintaining their position even after sharpening, with convex surfaces and rounded edges for enhanced ergonomics and design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional pen shape without recessed grips is used, then the manufacturing is simple, but the grip security and ergonomic support for fingers are insufficient
Solution Approach 1:
The pen body is segmented into multiple gripping surfaces (typically three) with recessed grips arranged on each surface. This segmentation allows each finger to be supported by a dedicated recessed grip, improving grip security while maintaining a relatively simple overall structure that can be manufactured using conventional woodworking techniques.
Solution Approach 2:
Recessed grips are added only at specific locations on the gripping surfaces where finger contact occurs. This local modification provides ergonomic support exactly where needed without unnecessarily complicating the entire pen structure. The recesses are carved to specific depths and dimensions optimized for finger comfort and control.
2Ease of operation
If gripping surfaces are made convex for better ergonomics, then the ergonomic support is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The gripping surfaces are formed with convex curvature, and recessed grips are carved into these curved surfaces. The convex shape naturally guides fingers into proper positioning, while the recesses provide localized support points. This combination achieves excellent ergonomic support through geometric form rather than requiring complex adjustable mechanisms, keeping manufacturing within reasonable precision tolerances.
Data Source
Figure 1~4
Figure 2a~2c
AI summary
The invention relates to a pencil, such as a writing, drawing, or sketching pen, having a pencil lead (2) and a wood body (3) surrounding the pencil lead (2), wherein the pencil (1) has a substantially three-surface shape extending across the pencil length, comprising three gripping surfaces (4, 5, 6), wherein gripping depressions (7) disposed behind one another are provided on at least two gripping surfaces (4, 5, 6) across at least part of the pencil length.