Electrical Junction Box Positioning Structure to Prevent Component Play
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrical junction boxes do not effectively address the issue of play caused by gaps between electronic components and their housing recesses, leading to noise generation due to design errors or tolerances.
Innovation Solution
An electrical junction box design featuring a positioning portion on the sidewall of the recess that protrudes beyond the edge, combined with pressing portions that press the component unit against the positioning portion, ensuring accurate positioning and preventing play by maintaining contact even after attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a recess is formed to house an electronic component, then work efficiency is improved through easy positioning, but gaps may form between the recess and component due to design errors or tolerances, causing play and noise
Solution Approach 1:
A positioning protrusion is introduced as an intermediary element between the recess and the electronic component. The protrusion fits into a corresponding positioning hole in the component, acting as a mediator that ensures accurate positioning and eliminates gaps caused by tolerances, while the recess continues to provide housing functionality.
Solution Approach 2:
The positioning function is segmented from the housing function. Instead of relying solely on the recess shape to provide both housing and positioning, the positioning is separated into a dedicated protrusion-hole feature, allowing each element to optimize its specific function without compromise.
2Ease of manufacture
If design errors or tolerances occur in the recess dimension, then manufacturing flexibility is maintained, but gaps form between the recess and electronic component, generating noise due to play
Solution Approach 1:
The positioning protrusion serves as an intermediary that compensates for dimensional variations in the recess. By providing a positive positioning feature that engages with the component's positioning hole, it eliminates play and prevents noise generation while allowing the recess dimensions to accommodate manufacturing tolerances.
Solution Approach 2:
The positioning protrusion provides beforehand cushioning against the harmful effect of gaps. By pre-establishing a precise positioning interface, it prevents the formation of play before noise can be generated, compensating for potential dimensional deviations in advance.
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 design enhances work efficiency by simplifying attachment operations and preventing noise due to play, while improving positioning accuracy through multi-point contact and elastic deformation of the pressing portions.
Implementation Method 1
a pressing portion provided in the recess and configured to press the component unit against the positioning portion
Data Source
AI summary
An electrical junction box provided with a component unit having an electronic component housed in a recess and connecting members connecting terminals of the electronic component to mounts outside of the recess includes a positioning portion provided on a long-side sidewall and a short-side sidewall of the recess to protrude further than edges of the long-side sidewall and the short-side sidewall, and configured to position the component unit by abutting against the connecting members, and spring portions provided in the recess and configured to press the component unit against the positioning portion.