Ergonomic Knife Handle with Finger Openings
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Solution Overview
Problem
Conventional knives cause wrist strain during cutting motions due to the need to bend the wrist, which is undesirable for user comfort and efficiency.
Innovation Solution
A knife with an ergonomic handle featuring a knife handle frame that includes finger openings and grooves, allowing for a more natural grip and reduced wrist movement, minimizing strain by maintaining the blade in a horizontal position during cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional knife handle is used, then the knife structure is simple, but the user experiences wrist strain during cutting motions
Solution Approach 1:
The handle is divided into multiple functional segments including a finger rest portion, a finger opening, and a blade attachment portion. This segmentation allows each part to perform its specific function - the finger rest provides support, the opening allows finger insertion, and the attachment portion secures the blade - thereby reducing wrist strain while maintaining structural clarity
Solution Approach 2:
The handle design extends into three-dimensional space with a curved finger rest portion that rises from the blade attachment portion. This dimensional change creates a natural hand position that reduces wrist bending, transforming a two-dimensional grip problem into a three-dimensional solution that accommodates the natural anatomy of the hand
2Ease of operation
If the wrist is bent to execute cutting motion, then the cutting action can be performed, but the wrist becomes strained
Solution Approach 1:
The finger rest portion features a curved surface that conforms to the natural curvature of the finger. This curvature allows the finger to rest comfortably on the handle while maintaining a natural hand position, eliminating the need to bend the wrist to execute cutting motions
3Ease of operation
If the handle is designed to accommodate finger naturally, then wrist strain is reduced, but the handle design becomes more complex
Solution Approach 1:
The handle incorporates a localized finger rest portion with specific ergonomic properties (curved surface, elevated position) only where needed for finger accommodation. The rest of the handle maintains a simpler structure, achieving natural grip functionality without requiring complete redesign of the entire handle assembly
Data Source
AI summary
A knife includes a knife blade and an ergonomic knife handle carried by the knife blade, the ergonomic knife handle including a knife handle frame having at least one finger opening sized and configured to accommodate at least one finger of a user.