Fiber Optic Adapter Spring Mechanism for Secure Ferrule Connection
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Solution Overview
Problem
Conventional fiber optic ferrules and adapters lack controlled mechanical resistance during insertion and removal, leading to potential damage from mismatched optical signals, where high-wattage signals can harm equipment or medical patients if not properly matched with compatible lightboxes.
Innovation Solution
A device with a toroid-shaped coil spring providing controlled resistance, where the mating dimensions of the ferrule and adapter are specifically chosen based on the intended fiber optic signal characteristics, such as wattage, to ensure secure and safe connections, using a ridge and spring mechanism to prevent accidental disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional ferrules and adapters are used without controlled mechanical resistance, then ease of insertion and removal is improved, but reliability deteriorates due to potential damage from mismatched optical signals
Solution Approach 1:
The patent introduces a spring mechanism that changes the mechanical parameters of the adapter during insertion and removal operations. The spring applies a controlled force that increases resistance at specific stages of insertion/removal, creating a tactile feedback mechanism that indicates proper mating while preventing premature disconnection. This parameter change enables the system to distinguish between intentional connection/disconnection and accidental displacement.
Solution Approach 2:
The spring mechanism provides tactile feedback to the user during insertion and removal operations. When the ferrule is properly mated with the adapter, the spring force creates a distinct tactile sensation that confirms correct connection. During removal, the same spring force provides feedback when the ferrule is fully extracted, allowing users to verify proper disconnection without risking damage from incomplete separation.
2Power
If high-wattage optical signals are transmitted without signal matching, then power transmission capability is improved, but object-affected harmful factors worsen due to potential damage to equipment and medical patients
Solution Approach 1:
The adapter with spring mechanism serves as an intermediary component between the high-wattage optical source and the receiving equipment. The spring mechanism acts as a mechanical mediator that ensures proper alignment and secure connection before optical signals are transmitted, preventing mismatched connections that could cause damage. This intermediary mechanism filters out potentially harmful mismatches while allowing legitimate high-wattage transmissions to proceed safely.
3Reliability
If the spring provides high resistance to insertion, then reliability is improved by preventing accidental disconnection, but ease of operation deteriorates due to difficulty in installation
Solution Approach 1:
The spring mechanism provides dynamic resistance rather than static resistance. During the initial stage of insertion, the spring is compressed and provides high resistance to prevent accidental disconnection. As insertion progresses and the ferrule reaches its proper position, the spring force changes, creating a distinct tactile feedback that indicates successful mating. This dynamic behavior allows the system to maintain reliability while guiding the user through the insertion process.
Solution Approach 2:
The spring mechanism is pre-loaded in the adapter before the ferrule is inserted. This preliminary positioning of the spring ensures that when insertion begins, the resistance is already optimized to provide tactile feedback at the correct insertion depth. The pre-loaded spring creates a self-regulating mechanism that automatically provides appropriate resistance levels throughout the insertion process, eliminating the need for complex external control systems.
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 solution ensures secure and controlled insertion and removal of ferrules, preventing damage from mismatched signals by providing the necessary mechanical resistance, allowing human installation while resisting unintended disconnections in typical use environments.
Implementation Method 1
The spring is sized, shaped structured and/or located so that: (i) when the ferrule is inserted into the interior space of the adapter in the axial direction, physical interference between the spring and the ridge will cause the spring to temporarily elastically deform in the radial outwards direction
Data Source
AI summary
A light source adapter to mechanically interconnect a light box and a fiber optic cable. The adapter engages the light box and defines an interior cavity to receive a ferruled fiber optic cable. The exterior surface of the ferrule comprises a circumferential ridge and groove that reversibly interacts with a spring inside the adapter cavity. The spring is biased to require sufficient force to insert or remove the ferrule. The geometry of the circumferential ridge or groove can optionally be modified to increase or decrease the amount of force required to effect insertion or removal of the ferrule inside the cavity.