Multi-Pivot Hinge for Uniform Gasket Compression in Wireless Access Points
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Solution Overview
Problem
Industrial and hazardous deployments of wireless access points face challenges in maintaining hardware resilience due to exposure to water and dust, which can lead to corrosion and maintenance difficulties, particularly with existing single pivot hinge designs that cause uneven compression and fastener stripping.
Innovation Solution
A wireless access point design featuring a hinge with four arms and three pivot points that provides uniform compression to a gasket along the compartment perimeter, allowing for easy access and preventing water and dust ingress, while allowing the access cover to be removably coupled and affixed without stripping fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single pivot hinge design is used to allow access to internal components, then ease of operation is improved, but manufacturing precision deteriorates due to uneven compression and fastener stripping
Solution Approach 1:
The hinge is segmented into four separate arms (first arm, second arm, third arm, fourth arm) connected by three pivot points, allowing independent movement and force distribution at each segment. This segmentation enables uniform compression force application across multiple fastener locations while maintaining operational accessibility.
Solution Approach 2:
The hinge mechanism transitions from a single pivot point to a multi-pivot system distributed across three pivot points (first pivot point, second pivot point, third pivot point). This dimensional distribution allows the hinge to apply compression forces uniformly across multiple axes, resolving the uneven compression issue while preserving ease of access.
2Ease of repair
If the access cover is made removable for maintenance, then ease of repair is improved, but reliability deteriorates due to potential water and dust ingress
Solution Approach 1:
The gasket is pre-installed along the perimeter of the access cover to create a sealed barrier before the cover is attached to the housing. This preliminary sealing action ensures that when the cover is removed for maintenance and reattached, the protective barrier against water and dust is already in place, maintaining reliability while enabling ease of repair.
Solution Approach 2:
The gasket acts as an intermediary element between the access cover and the housing, creating a sealed interface that allows the cover to be removable for maintenance while preventing water and dust ingress. The gasket mediates between the need for accessibility and the need for protection.
3Reliability
If fasteners are used to secure the access cover, then reliability is improved through secure attachment, but ease of operation deteriorates due to fastener stripping
Solution Approach 1:
The hinge mechanism applies compression forces locally at specific points (first location, second location, third location) where fasteners are positioned. This localized force application ensures that each fastener receives uniform compression without excessive force that could cause stripping, while maintaining secure attachment through the distributed fastener system.
Data Source
AI summary
In one embodiment, a wireless access point is disclosed comprising a housing that defines a compartment and a plurality of apertures configured to receive a plurality of fasteners; a gasket located along a perimeter of the compartment; an access cover for the compartment that defines a plurality of corresponding apertures (that align substantially with the plurality of apertures of the housing); and a hinge coupled to the housing and to the access cover. The hinge includes a first arm affixed to an interior portion of the compartment and extended substantially along a first axis; a second arm connected to the first arm at a first pivot point; a third arm connected to the second arm at a second pivot point; and a fourth arm affixed to an interior portion of the access cover and connected to the third arm at a third pivot point.