Electronic Component Fixing Structure for Compact In-Vehicle Chargers
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Solution Overview
Problem
Existing fixing structures for electronic components require additional space for screws and fastening elements, leading to increased dimensions in installation spaces, both in height and pitch direction, which can enlarge the housing dimensions unnecessarily.
Innovation Solution
A fixing structure that uses a fixing member with a rectangular plate-shaped fixing portion, U-shaped grooves, and leaf spring pressing portions to securely attach electronic components to a housing wall surface, eliminating the need for additional space by fastening the member to a base separate from the wall surface, thereby minimizing the housing dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the elastic clip is fastened to the heat-dissipation element with the screw between the heat-generating electronic components, then the electronic components are securely fixed to the heat-dissipation element, but the dimension in the pitch direction of the installation space becomes large
Solution Approach 1:
The patent extracts the screw fastening operation from the installation space area by fastening the elastic clip to the heat-dissipation element at locations outside the installation space (at both ends in the pitch direction). This removes the need for screws, fastening portions, and associated spaces within the installation area, thereby reducing the installation space dimension while maintaining secure fixation of the electronic components.
2Reliability
If the elastic clip is fastened to the heat-dissipation element with the screw in the lower sides of the heat-generating electronic components, then the electronic components are securely fixed to the heat-dissipation element, but the dimension in the height direction of the installation space becomes large
Solution Approach 1:
The patent extracts the screw fastening operation from the height direction of the installation space by fastening the elastic clip to the heat-dissipation element at locations outside the installation space (at both ends in the pitch direction). This eliminates the need for vertical space accommodation of screws and fastening structures, thereby reducing the height dimension of the installation space while ensuring reliable fixation.
3Reliability
If screws and fastening portions are provided within the installation space, then secure fixation is achieved, but the housing dimensions are unnecessarily enlarged
Solution Approach 1:
The patent extracts all screw fastening operations and associated fastening portions from the installation space by positioning them at both ends of the heat-dissipation element in the pitch direction, outside the installation space. This eliminates the need for housing enlargement to accommodate fastening structures, thereby maintaining compact housing dimensions while achieving reliable fixation of the electronic components.
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 solution effectively prevents the enlargement of housing dimensions in both height and lateral directions, ensuring reliable fixation and heat dissipation of electronic components while maintaining compact installation spaces.
Implementation Method 1
a pair of pressing portions (120) which are leaf springs
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A fixing structure of an electronic component includes a fixing member configured to fix an electronic component while pressing the electronic component against a wall surface of a housing in a pressing direction; and a fastened portion which is provided at a position away from the wall surface of the housing and to which the fixing member is fastened and fixed. The fixing member includes a fixing portion that is fastened and fixed to the fastened portion, a pressing portion that extends from the fixing portion toward the electronic component and is configured to press the electronic component against the wall surface in the pressing direction, and an engaging portion which is provided at the fixing portion. The fastened portion includes an engaged portion that is engaged with the engaging portion, and is configured to limit movement of the fixing portion in a direction opposite to the pressing direction.