Multifunctional Finger Ring With Segmented Body And Hidden Blade
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Solution Overview
Problem
Existing ring knives have inconvenient assembly, low assembly efficiency, and high production costs due to their complex design.
Innovation Solution
A multifunctional ring design featuring a ring body composed of an inner ring, a first outer half ring, and a second outer half ring, with a blade that is hidden between the first outer half ring and the inner ring, and a switch for controlling the blade's movement, allowing for easy assembly and reduced production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a traditional ring knife design is used with blade hidden in ring body, then cutting function is achieved, but assembly is inconvenient and production cost is high
Solution Approach 1:
The ring body is divided into three separate segments: inner ring, first outer half ring, and second outer half ring. This segmentation allows each component to be manufactured independently and assembled easily, resolving the contradiction between manufacturing ease and structural complexity by making the complex structure modular and manageable.
Solution Approach 2:
The blade is nested within the ring body structure, specifically positioned between the first outer half ring and the inner ring. This nesting approach allows the blade to be integrated into the ring without requiring complex external mechanisms, achieving the cutting function while maintaining a compact and simple overall structure.
2Ease of operation
If blade is always exposed for easy access, then cutting operation is fast, but safety is compromised
Solution Approach 1:
The blade is designed to be rotatable relative to the ring body, transitioning between an exposed position for cutting operations and a retracted position for safety. This dynamic capability allows the blade to be quickly accessed when needed while automatically returning to a safe, hidden position, resolving the contradiction between operational speed and safety.
Solution Approach 2:
The blade incorporates a torsional spring that automatically returns the blade to its retracted position after cutting operations. This self-service mechanism eliminates the need for manual retraction, ensuring the blade quickly returns to a safe state while maintaining readiness for the next operation, thus balancing safety and operational efficiency.
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 design enhances assembly efficiency, lowers production costs, and ensures the blade's safe operation, making the ring practical for daily use, including opening parcels and cutting ropes in outdoor activities.
Implementation Method 1
on the mounting part is designed with a torsional spring that makes the blade always rotate out
Implementation Method 2
inside the groove is designed with a reset spring which makes the switch always move in the direction of the blade
Data Source
AI summary
A multifunctional finger ring, comprising a finger ring body (10) and a blade (30) movably provided on the finger ring body (10); the finger ring body (10) comprises an inner ring (11), a first outer half ring (20) and a second outer half ring (26); the first outer half ring (20) and the second outer half ring (26) are oppositely sleeved on the upper and lower sides of the inner ring (11), and the first outer half ring (20) can be assembled on the inner ring (11); the blade (30) is hidden between the first outer half ring (20) and the inner ring (11) when closed, the second outer half ring (26) is integrally connected to the inner ring (11); positioning grooves (261) are provided at the connections between the upper ends of two sides of the second outer half ring (26) and the inner ring (11), and positioning blocks (21) corresponding to the positioning grooves (261) are provided at the lower ends of two sides of the first outer half ring (20), and during assembly, the positioning blocks (21) are embedded into the positioning grooves (261); and limiting protruding blocks (15) are provided on outer surfaces of the left and right sides of the inner ring (11), and limiting grooves (22) corresponding to the limiting protruding blocks (15) are provided on inner surfaces of the left and right sides of the first outer half ring (20), and during assembly, the limiting protruding blocks (15) are embedded into the limiting grooves (12). The finger ring is convenient to assemble, increasing the assembly efficiency and reducing the production cost, can protect the blade, and is convenient to carry.