Support Box Rail Assembly for Precise Plug-In Unit Positioning
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Solution Overview
Problem
Existing electrical connection enclosures face challenges in precise positioning of monitoring-control plug-in units due to frame deformations, leading to imprecise connections and the need for bulky or costly connectors to compensate for these deformations.
Innovation Solution
A support box with elastically deformable fastening lugs and centring pins that guide monitoring-control plug-in units, allowing for precise positioning independent of frame deformations, and incorporating a parallelepipedal framework with horizontal plates, a back, and vertical walls to support rails for translation, ensuring accurate placement and compensation for frame defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a support plate is fastened directly to a frame of the electrical enclosure, then the structure is simple, but the positioning precision of plug-in units deteriorates due to frame deformations
Solution Approach 1:
The support box is divided into a framework structure with multiple components (horizontal plates, vertical walls, back) that are assembled together. This segmentation allows the support box to maintain structural integrity while accommodating frame deformations through the modular framework design, resolving the contradiction between structural simplicity and positioning precision.
Solution Approach 2:
The support box acts as an intermediary element between the frame and the plug-in units. It provides a stable mounting platform that isolates the plug-in units from frame deformations, thereby maintaining positioning precision without requiring complex direct mounting structures.
2Adaptability or versatility
If flexible connectors are used to compensate for positioning imprecision, then positioning flexibility is improved, but the device becomes bulky and space optimization is prevented
Solution Approach 1:
The elastically deformable fastening lugs function similarly to pneumatic/hydraulic systems by using material elasticity to absorb and compensate for positioning variations. This elastic deformation mechanism provides positioning flexibility without requiring bulky flexible connectors, thus optimizing space usage.
3Adaptability or versatility
If rigid connectors accepting significant positioning variations are used, then positioning adaptability is improved, but cost and device bulk increase
Solution Approach 1:
The fastening lugs are designed with elastic deformability, changing the mechanical parameter from rigid to elastically deformable. This allows the connectors to adapt to positioning variations through controlled elastic deformation rather than requiring complex rigid connectors with significant adjustment capabilities, thereby reducing cost and device bulk.
4Ease of manufacture
If compartments are screwed to a deformed frame, then assembly is straightforward, but module insertion and removal becomes complex or impossible
Solution Approach 1:
The fastening lugs are designed to be elastically deformable, allowing them to dynamically adapt to frame deformations. This dynamic capability enables straightforward assembly by accommodating dimensional variations in the deformed frame, while simultaneously maintaining proper module insertion and removal by preserving the geometric integrity of the support box.
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 enables precise and reliable positioning of monitoring-control plug-in units, optimizing space and reducing costs by accommodating frame deformations without requiring complex assembly or expensive connectors, ensuring reliable operation and efficient use of space within the electrical enclosure.
Implementation Method 1
the members for fastening the framework to the frame of the electrical enclosure comprise fastening lugs that are elastically deformable and integral with the horizontal plates
Implementation Method 2
the support box further comprises at least one centring pin, configured to vertically centre the box with respect to a post of the frame of the enclosure
Data Source
AI summary
A support box (60) for supporting functional elements within the frame (28) of an electrical connection enclosure comprises at least one pair (70) of rails (72) for guiding a monitoring/control plug-in unit forming a functional element in translation, a parallelepipedal framework (62) and members for fastening the framework to the frame. The framework comprises two horizontal plates, a vertical back that is perpendicular to the horizontal plates, and two vertical walls, each supporting a rail of each pair of rails. The members for fastening the framework to the frame comprise fastening lugs that are elastically deformable and integral with the horizontal plates and elastically deformable load absorbing lugs that are integral with the vertical walls. The support box comprises at least one centring pin, vertically centring the box with respect to a post (32) of the frame, each centring pin being arranged in a positioning hole of a fastening lug.