Elevator Emergency Call Button Bezel for False Call Prevention
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Solution Overview
Problem
Existing elevator emergency call buttons are prone to being inadvertently engaged, leading to false emergency calls due to their exposed nature.
Innovation Solution
A bezel device is installed around the emergency call button, extending outwardly beyond its surface to prevent accidental activation, with a depth greater than the button's thickness, ensuring the bezel surrounds and protects the button.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the emergency call button is made exposed and easily accessible, then the ease of operation is improved, but the reliability deteriorates due to inadvertent engagement
Solution Approach 1:
The patent introduces a bezel as an intermediary protective structure between the user and the emergency call button. The bezel protrudes beyond the button surface and acts as a physical barrier that prevents inadvertent contact while still allowing intentional activation. This mediator structure resolves the contradiction by protecting the button from accidental engagement without significantly hindering legitimate emergency use.
2Reliability
If a protective bezel is added around the emergency call button, then the reliability is improved by preventing inadvertent engagement, but the device complexity increases
Solution Approach 1:
The patent divides the control panel assembly into separate functional components: the emergency call button, the protective bezel, and the control panel housing. This segmentation allows the bezel to be designed and installed as an independent protective element, simplifying the overall system architecture and making the protective function modular rather than integrated into the button mechanism itself.
Solution Approach 2:
The bezel is implemented as a thin, rim-like structure that provides protective functionality without adding substantial bulk or complexity. This thin-film approach allows the bezel to effectively protect the button while maintaining a sleek design and minimizing impact on the overall device complexity.
3Object-affected harmful factors
If the bezel extends outwardly beyond the button surface, then the object-affected harmful factors are reduced by preventing accidental contact, but the length of the object increases
Solution Approach 1:
The bezel extends only partially beyond the button surface - just enough to provide effective protection against inadvertent engagement. This partial action approach avoids excessive protrusion that would unnecessarily increase the overall dimensions of the control panel, while still achieving sufficient protection to prevent accidental contact during normal use.
Data Source
AI summary
An elevator button bezel assembly includes an emergency call button that is integrated into a control panel of an elevator. In this way the emergency call button can be engaged by a user in the event of an emergency. A bezel is provided and the bezel is positioned around the emergency call button. The bezel has a depth that is greater than a thickness of the emergency call button such that the bezel extends outwardly beyond the emergency call button. In this way the bezel inhibits the user from inadvertently engaging the emergency call button by bumping against the emergency call button.