Explosion-proof Connector Resin Cemented Joint Design
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Solution Overview
Problem
Existing solutions for creating a pressure-resistant/explosion-proof structure for electric apparatuses with external wiring are costly and impractical, especially when dealing with long antenna extension cables, as they require complex and costly adaptations to fit within a pressure-resistant/explosion-proof chamber.
Innovation Solution
A connector that combines a general-purpose waterproof high-frequency connector with a cylindrical member, filled with resin to form a cemented joint, which can be easily attached to the electric apparatus or pressure-resistant/explosion-proof chamber, forming a boundary that satisfies the pressure-resistant/explosion-proof standard without the need for complex adaptations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure-resistant/explosion-proof chamber is constructed to contain the antenna extension cable and antenna, then the explosion-proof requirement is satisfied, but the device complexity and installation cost increase significantly
Solution Approach 1:
The invention divides the explosion-proof structure into two segments: the electric apparatus case (which may already satisfy explosion-proof requirements) and a separate connector assembly. The connector itself is designed as an explosion-proof component that can be attached to the case, eliminating the need to enclose the entire cable path in a chamber. This segmentation reduces device complexity while maintaining explosion-proof reliability.
Solution Approach 2:
The invention extracts the explosion-proof function from the overall chamber structure and concentrates it into the connector assembly. By taking out the explosion-proof requirement from the global chamber design and implementing it locally at the connection point, the system avoids the complexity of constructing a large chamber to accommodate long cables while still satisfying explosion-proof standards.
2Reliability
If a pressure-resistant/explosion-proof chamber is constructed to contain the antenna extension cable, then the explosion-proof requirement is satisfied, but the installation cost and number of steps increase
Solution Approach 1:
The connector is pre-designed and pre-assembled as a complete explosion-proof unit before installation. The cable gland, sealing elements, and fastening mechanisms are integrated into the connector housing, which has already been tested and certified for explosion-proof performance. This preliminary preparation allows for simple field installation by merely attaching the connector to the case and routing the cable through it, dramatically reducing installation steps and cost compared to constructing a custom chamber on-site.
3Adaptability or versatility
If the antenna extension cable is made very long to reach optimal antenna position, then the antenna sensitivity is improved, but the adaptability to fit within a pressure-resistant/explosion-proof chamber decreases
Solution Approach 1:
The invention extracts the cable management constraint from the chamber design. By implementing the explosion-proof function at the connector level rather than requiring a enclosing chamber, the system allows cables of any length to extend freely from the connection point. The connector handles only the critical interface where explosion-proof protection is needed, while the cable itself can be routed externally without constraint, maximizing antenna position 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
This approach allows for the realization of a pressure-resistant/explosion-proof structure at a low cost, providing flexibility in selecting antenna extension cable length and location, while ensuring compliance with explosion-proof standards without the need for new connector development.
Implementation Method 1
filled with resin to form a cemented joint
Data Source
Figure 1A~1C
Figure 2
Figure 3A~3B
AI summary
A connector includes a base connector and a cylindrical member. The base connector has a cylindrical projection to penetrate through an outside wall of an attachment subject The cylindrical member is fitted with the cylindrical projection and has a cavity.