Elastomeric Labyrinth Cable Sealing for IP65 Enclosures
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Solution Overview
Problem
Enclosures for telecommunications and electrical applications face challenges in effectively sealing against dust and moisture ingress, particularly in environments exposed to low-pressure water jets, which can compromise the protection of internal components.
Innovation Solution
The use of an elastomeric cable sealing component with first and second sealing members, each comprising an elastomeric block with flexible ribs and grooves, forming a labyrinth seal to prevent dust and water ingress, including low-pressure water jets, by aligning ribs of one member with grooves of the other, creating a channel with offset central axis and varying notch widths for effective sealing across a range of cable diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple sealing component is used, then the device complexity is reduced, but the sealing effectiveness against dust and water jets deteriorates
Solution Approach 1:
The sealing component is divided into multiple sealing members (first sealing member, second sealing member, third sealing member) that work together to form a multi-layer sealing system. Each sealing member contains multiple flexible ribs that create separate sealing zones, segmenting the sealing function to achieve IP65 protection without requiring an overly complex single-component design
Solution Approach 2:
The patent introduces a labyrinthine sealing path through the arrangement of flexible ribs and grooves that extend in multiple directions. The grooves between adjacent flexible ribs create three-dimensional sealing channels that deflect water jets and prevent dust ingress, adding dimensional complexity to the sealing mechanism rather than relying solely on linear sealing surfaces
2Manufacturing precision
If a fixed sealing structure is used, then the manufacturing precision is improved, but the adaptability to different cable diameters deteriorates
Solution Approach 1:
The sealing component incorporates flexible ribs that can dynamically adjust their position and shape based on the cable diameter. These elastomeric ribs deform elastically to conform to cables of varying sizes while maintaining sealing contact, allowing the same sealing structure to adapt to different cable dimensions without compromising manufacturing precision or sealing effectiveness
3Reliability
If the enclosure is sealed to prevent dust and water ingress, then the protection of internal components is improved, but the cable routing flexibility deteriorates
Solution Approach 1:
The sealing component uses elastomeric flexible ribs that can bend and deform to accommodate cables of different diameters and routing requirements. These flexible sealing elements maintain the IP65 seal integrity while allowing cables to be routed through the enclosure wall with varying angles and positions, preserving both component protection and cable routing flexibility
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 elastomeric sealing component achieves an IP 65 rating, providing comprehensive protection against dust and moisture, including low-pressure water jets, while accommodating various cable sizes, ensuring the integrity of internal components within the enclosure.
Implementation Method 1
the first and second sealing members cooperate to form a labyrinth seal such that the ribs of one of the sealing members align with and are at least partially disposed in the grooves of the other of the sealing members
Implementation Method 2
each of the flexible ribs of each of the elastomeric blocks of each of the sealing members includes a notch
Data Source
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AI summary
Aspects and techniques of the present disclosure relate to an IP 65 rated enclosure. Cable sealing components in accordance with the present disclosure provide labyrinthine sealing channels around cables of different diameters entering IP 65 rated and other enclosures. In some aspects, the cable sealing components of the present disclosure include a pair of elastomeric sealing blocks having sets of ribs and grooves that intermesh with each other to form sealing cable channels.