Chain Link Fastening with Trigger Pin for One-Handed Locking
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Solution Overview
Problem
Existing link chain attachment systems are cumbersome to use, requiring two people to operate due to the need for one person to hold the hooking system and another to manage the chain, making it tedious to shorten or connect link chains.
Innovation Solution
A hooking system with an ergonomic design featuring a trigger that can be operated with a single finger, allowing the main body and trigger to be grasped with one hand, enabling easier insertion and removal of links, and incorporating a return spring for automatic locking and unlocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pin-based fastening system is used to secure chain links, then the chain links can be securely attached, but the system becomes cumbersome and requires two people to operate
Solution Approach 1:
The patent transforms the static pin insertion/removal process into a dynamic, controlled movement using a trigger mechanism. The pin can now be quickly inserted and secured with a simple trigger pull, and released with another trigger pull, converting a multi-step manual process into a rapid, one-handed operation that maintains secure attachment while dramatically improving ease of use
Solution Approach 2:
The trigger mechanism serves as an intermediary between the operator and the pin. Instead of directly manipulating the pin with fingers (which requires two people), the trigger acts as a mediator that translates a simple pulling motion into precise pin movement, enabling single-person operation while maintaining reliable chain link attachment
2Reliability
If a traditional pin fastening system is used, then chain links can be attached, but the process is time-consuming and requires multiple personnel
Solution Approach 1:
The trigger mechanism enables rapid, dynamic attachment and detachment of chain links. A single pulling motion on the trigger quickly inserts and secures the pin, and another pull rapidly releases it, transforming a time-consuming manual process into a high-speed operation that significantly improves productivity while maintaining reliable attachment
Solution Approach 2:
The trigger mechanism is pre-configured with the pin and spring system, so that when the trigger is pulled, the pin is already positioned and ready for immediate insertion. This preliminary preparation eliminates the need for separate positioning steps, allowing rapid attachment and detachment that boosts productivity without compromising attachment reliability
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 system simplifies the process of attaching and detaching link chains, allowing a single operator to efficiently shorten or connect chains, improving usability and reducing the need for multiple personnel.
Implementation Method 1
the system includes a return spring configured to return the pin to the active position
Data Source
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AI summary
The invention relates to a fastening system (1) comprising a main body (10) having a groove (16) adapted to receive a link (61) of a chain (6), and a locking mechanism (3), comprising an element (30), called a locking pin, movable between an inactive position in which the passage (160) inside the groove (16) is released to allow the link (61) to be inserted or removed from the groove (16); and an active position in which the locking pin (30) reduces or closes the passage (160) inside the groove (16) to allow the link (61) to be locked in relation to the groove (16). The fastening system also includes a trigger system (2) comprising a trigger (20) coupled to the locking pin (30), the trigger (20) being manually actuable to move the pin (30) to the inactive position. The invention also relates to a fastening method and a corresponding release method.