Knife Handle Weighting Structure for Adjustable Balance
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Solution Overview
Problem
Existing knives lack user-customizable weight distribution and balance options, limiting their performance in tasks requiring repeated fast movements or manipulation, such as chopping or flipping.
Innovation Solution
A knife design with adjustable weight distribution through removable weights secured in shaped regions within the handle scales, allowing users to easily customize weight placement and distribution without altering the exterior handle shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If knife specifications are fixed by manufacturer, then manufacturing simplicity is maintained, but user customization capability is lost
Solution Approach 1:
The knife handle is segmented into modular components including handle scales with shaped regions, removable weights, and retention structures. This segmentation allows users to customize weight distribution by adding or removing individual weight components without affecting the overall handle structure, thereby enabling user customization while maintaining manufacturing simplicity.
Solution Approach 2:
The weight components are extracted as separate removable elements from the handle structure. Users can remove these weights independently from the handle scales, allowing customization of weight distribution without modifying the permanent handle structure. This extraction approach enables adaptability while keeping the base knife design simple for manufacturing.
2Ease of operation
If weights are added to handle, then knife balance and dynamics are improved, but handle complexity increases
Solution Approach 1:
The handle scales incorporate localized shaped regions with retention structures at specific positions along the handle length. These localized features provide weight retention capability only where needed, rather than requiring complex structures throughout the entire handle. This local quality approach improves knife balance and dynamics through strategic weight placement while minimizing overall handle complexity.
Solution Approach 2:
The weight retention system employs dynamic characteristics where weights can be easily added or removed by users based on operational needs. The retention structures allow for quick attachment and detachment of weights without permanent modification, enabling the handle configuration to adapt dynamically to different usage scenarios while maintaining simple structural design.
Data Source
AI summary
A knife includes a blade and a handle attached to the blade. The handle includes a liner and a handle scale adapted to be removably secured to the liner, such as by screws. The handle scale has an inner side facing the liner and having a shaped region to secure a weight in a selected position along a length of the handle scale. In one approach, there are multiple discrete positions in which one or more weights can be secured. The weights can be metal discs, for example. In the case of a two-handed knife such as a butterfly knife, both handles can have a similar structure for storing weights. The knife allows the end user to easily customize the weight distribution of a knife without interfering with the envelope or exterior surfaces of the handles.