3D Wave-Band Handle Structure for Wet Grip and Stability
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Solution Overview
Problem
Existing personal-care implements, such as toothbrushes, suffer from poor maneuverability, comfort, and stability, particularly when wet, and often tip over due to a center of gravity close to the head, necessitating uncomfortable geometrical structures for support.
Innovation Solution
A handle with a three-dimensional surface structure featuring alternating convex and concave wave bands provides enhanced grip, anti-slip properties, and roll prevention, along with a flat bottom for upright storage, enhancing maneuverability and hygiene.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a linear rod handle is used, then the structure is simple, but maneuverability and user comfort deteriorate
Solution Approach 1:
The handle incorporates a three-dimensional surface structure with alternating convex and concave wave bands instead of a simple linear rod. The wave crests and wave troughs create an ergonomic contour that improves grip and maneuverability while maintaining structural simplicity
Solution Approach 2:
The wave bands create localized variations in the handle surface with different curvatures. The convex wave crests provide structural support while the concave wave troughs provide grip enhancement zones, allowing different regions of the handle to serve different functional purposes
2Shape
If the center of gravity is close to the head, then the structure is compact, but stability deteriorates and the brush tips over
Solution Approach 1:
The three-dimensional wave structure on the handle creates a geometric configuration that functions as an integrated roll stop. The alternating convex and concave curvatures prevent the brush from tipping over by creating physical barriers against rotational movement, eliminating the need for additional support structures
3Ease of manufacture
If a smooth handle surface is used, then manufacturing is simple, but grip performance deteriorates when wet
Solution Approach 1:
The wave bands with alternating convex and concave curvatures create a three-dimensional surface structure that enhances grip through geometric interlocking with finger contours. This curvature-based design improves wet grip performance without requiring additional materials or complex manufacturing processes
Solution Approach 2:
The wave troughs create localized grip enhancement zones where water can be channeled away, while the wave crests provide structural support. This local variation in surface geometry optimizes grip performance in specific areas without complicating overall manufacturing
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
The handle design improves grip and stability, prevents slipping and tipping, and ensures quick drying, thereby increasing user comfort and hygiene.
Implementation Method 1
the surface structure comprises at least two continuous wave bands with alternating convex and concave curvatures forming wave crests and wave troughs, respectively
Data Source
AI summary
A handle for a personal-care implement has a longitudinal extension extending between a distal end and a proximal end opposite to the distal end. The handle has an outer lateral surface with a three-dimensional surface structure, wherein the surface structure comprises at least two continuous wave bands with alternating convex and concave curvatures forming wave crests and wave troughs, respectively, the wave bands extending along the longitudinal extension of the handle.