Manual Trigger Mechanism With Asymmetric Column And Hole
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Solution Overview
Problem
Manual triggers used in public reception and security systems require improved reliability and maintenance, particularly in ensuring easy testing of electronic components without disassembling the device, while minimizing the risk of involuntary triggering and reducing the force required for activation.
Innovation Solution
A manual trigger mechanism with a push plate and slide plate, where the central column and oblong hole sections change alignment between armed and triggered states, utilizing a single elastic recall organ to reduce pressure and enhance reliability, and allowing for electronic testing without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional manual trigger mechanism is used, then the device provides satisfactory triggering results, but the design complexity increases and maintenance becomes more difficult
Solution Approach 1:
The trigger mechanism is divided into distinct functional segments: the push-plate assembly with central column, the slide plate with oblong hole, and the elastic return element. This segmentation allows each component to perform its specific function independently, simplifying the overall design while maintaining reliable triggering action.
Solution Approach 2:
The patent extracts the essential triggering function from complex traditional mechanisms, retaining only the necessary elements: a push-plate to initiate movement, a slide plate to translate and block/unblock, and a single elastic return element to provide reset force. This extraction eliminates unnecessary complexity while preserving reliability.
2Ease of repair
If the housing is disassembled for electronic component testing, then complete access to components is achieved, but maintenance time and device downtime increase
Solution Approach 1:
The slide plate is designed with an oblong hole that allows insertion of testing tools through the housing without disassembly. This preliminary design feature enables maintenance personnel to perform electronic component testing through existing openings, eliminating the need to disassemble the housing and significantly reducing maintenance time.
3Device complexity
If a single elastic return element is used, then cost is reduced and reliability increases, but the force required for triggering must be precisely controlled
Solution Approach 1:
The elastic return element is positioned to bear approximately at the center of the push-plate, creating a localized force application point. This central positioning optimizes the mechanical advantage and force distribution, allowing a single elastic element to effectively reset the mechanism while maintaining controlled triggering force requirements.
4Reliability
If the central column and oblong hole sections are shaped to engage in armed state and slide in unloaded state, then unintentional triggering is prevented, but manufacturing precision requirements increase
Solution Approach 1:
The central column and oblong hole sections are designed with asymmetric geometries: the first sections are shaped to engage and block movement in the armed state, while the second sections are shaped to allow sliding in the unloaded state. This asymmetric design inherently prevents unintentional triggering through geometric constraint, and the patent specifies that these sections can be rectangular or have rectangular cross-sections, which are easier to manufacture with standard tolerances compared to more complex asymmetric shapes.
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 increases the reliability and reduces the force needed for activation, simplifies maintenance, and facilitates electronic testing within the device, enhancing overall performance and safety.
Implementation Method 1
The push plate can be returned to its initial state using a single elastic return element bearing approximately, and not necessarily, at the center of the plate
Data Source
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AI summary
A manual release device includes a release mechanism (20) and a housing for the release mechanism (20). The release mechanism includes a push plate (22) and a slide plate (24), each mounted for translation within the housing. The release mechanism has an armed state, where the push plate blocks the movement of the slide plate, and a released state, where the push plate releases the movement of the slide plate. The push plate (22) includes a central column, and the slide plate (24) includes an oblong hole into which the central column engages.The central column and the oblong hole comprise first sections, homologous to each other, shaped so as to come into contact with each other in the armed state of the mechanism (20) and second sections, homologous to each other and adjacent to the first sections, shaped so as to slide relative to each other in the triggered state of the mechanism (20).