Railway Control Relay Board Double-Board Mounting Structure
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Solution Overview
Problem
The pressure plate structure in existing control relay boards for rail vehicles is prone to deformation and daughter board loosening, leading to electric system faults, which fails to meet the requirements of industrialized electric equipment.
Innovation Solution
A rail vehicle control relay board design featuring a main frame with a board face mounting frame and a daughter board mounting frame, incorporating a double-board structure with sliding grooves and support columns to enhance mounting strength, reduce loosening faults, and increase the number of relays, while allowing for easy assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure plate structure is used to press daughter boards on the frame, then the daughter boards can be held in place, but the pressure plate and daughter boards are prone to deformation and loosening, resulting in electric system faults
Solution Approach 1:
The pressure plate structure is divided into multiple independent support columns distributed across the daughter board mounting frame. Each support column independently supports the daughter boards at different locations, preventing deformation while maintaining connection stability. This segmentation allows the load to be distributed evenly without creating stress concentration points that would cause deformation or loosening.
2Adaptability or versatility
If the control relay board uses a traditional layout with mother board and daughter boards connected by connectors, then electrical connections can be established, but the wiring space is limited and the number of relays that can be arranged is restricted
Solution Approach 1:
The daughter boards are arranged perpendicular to the mother board, utilizing the vertical dimension rather than only horizontal plane. This three-dimensional arrangement significantly increases the wiring space available and allows for a greater number of relays to be arranged on the control relay board without increasing the footprint area.
3Adaptability or versatility
If the daughter boards are arranged perpendicular to the mother board in the daughter board mounting frame, then the wiring space is extended and more relays can be arranged, but the mounting structure must provide sufficient support to prevent loosening
Solution Approach 1:
The support columns serve multiple functions simultaneously: they provide mechanical support to prevent daughter board loosening, distribute mechanical stress to prevent deformation, and maintain the perpendicular arrangement geometry. This multi-functionality reduces the need for additional separate components, thereby managing device complexity while achieving the desired relay arrangement capacity.
Data Source
AI summary
A rail vehicle control relay board includes a main frame, a mother board and a daughter board assembly which are arranged in the main frame, the main frame includes a board face mounting frame and a daughter board mounting frame which protrudes from the board face mounting frame, the mother board is arranged in the board face mounting frame, and multiple daughter board assemblies perpendicular to the mother board are arranged side by side in the daughter board mounting frame, the daughter board assemblies are electrically connected to the mother board, and multiple first connectors configured to perform output outwards are arranged on the mother board. The rail vehicle control relay board has a high strength, and may reduce the daughter board loosening faults, extend a wiring space and increase the number of relays arranged.