Wrist-Worn Knife with Quick-Release Blade Sheath
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Solution Overview
Problem
Conventional portable knives are not easily carried and used in emergency situations, leading to potential situations where they are not readily available when needed.
Innovation Solution
A wrist wearable knife design that includes a sheath body attachable to a wrist strap, allowing the blade body to be detachably mounted on the wrist, with features for easy attachment and detachment, stability, and improved grip.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional portable knife is carried in a sheath, then the blade is protected and can be carried, but the knife is not readily accessible when needed in emergencies
Solution Approach 1:
The knife is moved from traditional storage locations (pockets, bags, trunk) to the wrist dimension, allowing immediate access while maintaining portability. The wrist strap system enables the knife to be worn on the wrist where it can be quickly grasped in emergency situations without requiring complex carrying systems.
2Ease of operation
If the blade body is firmly fixed in the sheath body, then stability is improved, but the blade body cannot be quickly detached when needed
Solution Approach 1:
The blade body is designed with dynamic retention features that provide stable holding during normal wear but allow quick release when needed. The elastic retention members can be easily depressed to release the blade, transitioning from a stable fixed state to a removable state rapidly.
3Reliability
If the wrist strap is permanently attached to the sheath body, then the knife remains securely on the wrist, but the wrist strap cannot be removed for cleaning or replacement
Solution Approach 1:
The wrist strap attachment system is divided into separate components: the strap itself and the attachment mechanism on the sheath body. This segmentation allows the strap to be easily removed, cleaned, or replaced while maintaining secure attachment when worn, addressing both reliability and maintenance needs.
Data Source
AI summary
An object of the present invention is to provide a wrist wearable knife that can always be worn on the user's wrist through a wrist strap such as a watch strap or a bracelet, wherein the wrist wearable knife for wearing on a wrist of a user through a wrist strap includes: a sheath body for attaching to and detaching the wrist strap; and a blade body detachably provided in the sheath body.