PCB Board Case Cable Clamp for Watertight Display Sealing
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Solution Overview
Problem
Outdoor display apparatuses are vulnerable to contamination from rainwater and dirty water, which can lead to malfunctioning of the control circuit due to the lack of effective protection for the circuit boards.
Innovation Solution
A display apparatus with a board case featuring a cable clamp made of elastic material, including a body with cuts and through holes that securely accommodate and seal cables, preventing moisture ingress and ensuring the circuit board's protection within a closed structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the board case has a closed structure to protect the PCB, then protection against rain water and dirty water is improved, but cable openings are required which compromise the sealed structure
Solution Approach 1:
The cable clamp is made of elastic material that forms a flexible seal around the cables. The elastic body deforms to create tight contact surfaces that prevent moisture ingress while accommodating cable passage, thus maintaining the protective sealed structure despite cable openings
Solution Approach 2:
The cable clamp acts as an intermediary component between the cable and the board case. It provides a sealing interface that allows cables to pass through the closed structure while preventing moisture and contaminants from entering, thus mediating between the need for cable access and the need for protection
2Reliability
If the cable clamp is made of elastic material to provide sealing, then prevention of moisture ingress is improved, but the structural strength may be reduced
Solution Approach 1:
The cable clamp integrates multiple functional features into a single elastic component structure. The elastic material provides both sealing capability through deformation and sufficient structural strength through its integrated design, including the body, cuts, and through holes formed as one piece
3Ease of operation
If multiple cables are secured individually, then cable fixation is improved, but the complexity of the cable clamp structure increases
Solution Approach 1:
Multiple cable securing functions are merged into a single integrated elastic cable clamp structure. The clamp simultaneously accommodates multiple cables through its body with multiple through holes and cuts, providing individual fixation for each cable while maintaining a unified simple structure that reduces overall complexity
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 effectively prevents contamination of the printed circuit board by sealing the cable openings, ensuring the display apparatus operates reliably in outdoor conditions by securely fixing cables and maintaining a watertight seal.
Implementation Method 1
the body of the cable clamp may be formed of an elastic material to be elastically deformable
Data Source
AI summary
A display apparatus including a housing, a display module arranged inside the housing to display an image, a printed circuit board (PCB) connected to a plurality of cables provided to be electrically connected to the display module, a board case having a receiving space formed within the board case, the receiving space accommodating the PCB, and a cable clamp arranged on the board case to close a side of the receiving space, wherein the cable clamp includes a body, a first cut which is cut from a side of the body, a plurality of second cuts branched from an end of the first cut, and a plurality of through holes formed at one ends of the plurality of second cuts and passing through the body, each through hole having one of the plurality of cables inserted to and coupled with the through hole.