Removable Knife Scale Attachment Using U-Shaped Clips
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Solution Overview
Problem
Conventional knife designs with fixed scales lack removability, leading to sub-optimal performance due to free play between the handle and blade, and existing removable scale designs often fail to provide a secure and aesthetically pleasing solution.
Innovation Solution
A scale attachment system utilizing U-shaped clips that interlock with grooves on the scales and tang, allowing for removability and interchangeability, with fasteners securing the clips to the tang for a secure and customizable handle configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scales are fixedly attached to the tang with rivets, then the handle structure is stable and strong, but the scales become non-removable and customization is lost
Solution Approach 1:
The scale attachment system is divided into separate components: U-shaped clips with fasteners that can be independently removed from the tang, allowing the scales to be detached without removing the entire handle structure. This segmentation enables customization while maintaining overall structural integrity.
Solution Approach 2:
The attachment system transitions from a static fixed connection to a dynamic removable connection. The U-shaped clips with fasteners can be easily attached and detached, providing flexibility and adaptability while maintaining structural stability when attached.
2Adaptability or versatility
If conventional removable fasteners are used to attach scales, then the scales become removable for customization, but the handle has too much free play relative to the blade
Solution Approach 1:
The U-shaped clips serve as intermediary components between the scales and the tang. These clips provide a stable mechanical connection through their geometry and engagement with the tang, reducing free play while still allowing for easy attachment and removal of the scales.
Solution Approach 2:
The conventional screw fastener system is replaced with a U-shaped clip mechanism that uses elastic deformation and geometric interlocking. This substitution provides a more stable connection that reduces free play while maintaining removability, as the clips can be easily pushed onto the tang and removed by applying pressure to the ends.
3Adaptability or versatility
If U-shaped clips with fasteners are used to attach scales, then the scales become easily removable for customization, but the attachment system becomes more complex
Solution Approach 1:
The U-shaped clip combines multiple functions into a single component: it provides the attachment mechanism, the positioning feature, and the structural support. By merging these functions into one element rather than using separate components, the overall system complexity is reduced while maintaining ease of attachment and removal.
Data Source
AI summary
The disclosure is related to knives (fixed blade or folding) with removable scales and scale attachment systems for such knives. In accordance with some examples herein a scale attachment system for a knife having a blade and a handle defined, at least in part, by a pair of scales removably attached to the blade, includes a plurality of U-shaped clips, each of which is configured to be received in a pair of corresponding grooves on opposite sides of the handle. In examples herein, each of the clips may extend transversely along a spine side of the handle and at least along a portion of the two opposite sides of the handle adjacent to the spine side.