Chain Lock Blocking Element Rotary Detent Design
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Solution Overview
Problem
Existing chain locks lack sufficient safety mechanisms to prevent the blocking element from unintentionally moving out of the operating position, leading to potential loss or malfunction.
Innovation Solution
The blocking element is held in the operating position by a rotary detent with a pin that automatically locks into place, requiring a high force to move out of the position, combined with a form-fitting connection to ensure it cannot be lost longitudinally, and a compact design that combines the functions of a positive connection and rotary catch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the blocking element is held in the operating position by a form-fitting connection, then the push-through process can be carried out with low forces, but the blocking element can move out of the operating position by itself
Solution Approach 1:
The holding mechanism is divided into two independent parts: a form-fitting connection for easy insertion and a rotary detent for secure positioning. The form-fitting connection (comprising a pin and recess) enables low-force push-through, while the rotary detent (with pin and recess engaging at specific rotational positions) prevents unintentional movement, resolving the contradiction between ease of operation and reliability
Solution Approach 2:
The patent combines two different connection mechanisms (form-fitting connection and rotary detent) into a single integrated system. The form-fitting connection provides the basic holding function for easy installation, while the rotary detent adds rotational locking capability to prevent accidental disengagement, achieving both low insertion force and high operational reliability
2Reliability
If a rotary detent is added to hold the blocking element in the operating position, then safety is increased, but the device complexity increases
Solution Approach 1:
The rotary detent mechanism serves multiple functions: it locks the blocking element in the operating position, prevents unintentional movement, and can be actuated by rotational motion. The pin and recess configuration provides both the form-fitting connection and the rotary detent functions, reducing the need for separate components and minimizing overall device complexity while maintaining high reliability
3Reliability
If the blocking element is held captive on the chain lock, then the blocking element cannot be lost, but the chain lock requires more space
Solution Approach 1:
The blocking element is designed to be held captive within the chain lock structure through the form-fitting connection and rotary detent mechanism. The pin and recess configurations allow the blocking element to be retained inside the chain lock body without protruding externally, ensuring the blocking element cannot be lost while maintaining a compact chain lock size
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
This configuration enhances safety by ensuring the blocking element remains securely in place, preventing accidental disengagement and simplifying production while maintaining a compact and easy-to-operate chain lock design.
Implementation Method 1
The pin can be deflected against spring force. It can be prestressed in one direction by a spring element, for example a spiral or helical spring or a rubber-elastic element.
Data Source
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AI summary
The invention relates to a main connecting rod comprising a basal body (2) and used for connecting two chain links. Two plugholes (3) and an insertion opening (4) form in the basal body (2). Each plughole (3) is used for one of the two chain links. The insertion opening (4) and the two plugholes are all used for insertion of the chain links. The main connecting rod further comprises a lock component (5) can goes through the basal body (2), be connected in the insertion inlet and blocks the insertion inlet (4) in a working state (B). The lock component (5) is held in the basal body (2) through a form lock connecting member (6) in a working state. The main connecting rod designed in such a way enables easy assembly of the chain links.