Onboard Equipment Bracket Structure for Vibration and Collision Loads
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Solution Overview
Problem
Existing onboard equipment fixing structures in vehicles fail to effectively combine vertical mounting strength and safety performance during collisions without increasing the number of parts or installation space, and do not adequately address vibration countermeasures.
Innovation Solution
A bracket configuration that includes a vehicle body attaching portion, an equipment attaching portion, and a connecting portion with vertical wall parts, where the connecting portion is designed to deform in the direction of a collision load, increasing torsional rigidity against vibrations and allowing for deformation to mitigate collision loads without additional parts or space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a separate bracket is used to increase mounting strength against vertical load, then the vertical mounting strength is improved, but the number of parts and installation space increase
Solution Approach 1:
The patent combines the collision load-bearing function and vertical vibration resistance function into a single bracket structure. The bracket includes a collision load-bearing portion that absorbs collision loads and a connecting portion that provides rigidity against vertical vibrations, eliminating the need for separate brackets for each function.
Solution Approach 2:
The bracket is designed as a multi-functional component that simultaneously handles collision loads through its collision load-bearing portion and resists vertical vibrations through its connecting portion with rigid structure, making it a universal fixing component that replaces multiple separate parts.
2Strength
If the bracket is made more rigid to improve vertical mounting strength, then the vibration resistance is improved, but the safety performance during collision deteriorates
Solution Approach 1:
The bracket is segmented into functionally distinct portions: a collision load-bearing portion with higher rigidity that absorbs collision loads through controlled deformation, and a connecting portion with rigid structure that resists vertical vibrations. This segmentation allows each portion to be optimized for its specific function without compromising the other.
Solution Approach 2:
Different portions of the bracket have different rigidity characteristics tailored to their specific functions. The collision load-bearing portion has localized rigidity optimized for absorbing collision impacts, while the connecting portion has rigidity optimized for resisting vertical vibrations, achieving local optimization of mechanical properties.
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 configuration enhances the mounting strength against vertical vibrations and collision safety while minimizing part count and installation space, preventing damage to onboard equipment by distributing collision loads and allowing controlled deformation.
Implementation Method 1
the connecting portion includes a brittle part which becomes a starting point of a deformation in a direction which intersects an input direction of a collision load
Implementation Method 2
the connecting portion may include a plurality of vertical wall parts, and the opening portion may be surrounded by the vehicle body attaching portion, the equipment attaching portion and the vertical wall parts
Data Source
AI summary
An onboard equipment fixing structure for an onboard equipment which is mounted in a vehicle includes a bracket which fixes the onboard equipment to a vehicle body part of the vehicle. The bracket includes a vehicle body attaching portion which is attached to the vehicle body part, an equipment attaching portion which is attached to a side surface of the onboard equipment which extends in a vertical direction of a vehicle body, a connecting portion which connects the vehicle body attaching portion and the equipment attaching portion, and an opening portion which is formed in an area surrounded by the vehicle body attaching portion, the equipment attaching portion and the connecting portion. The vehicle body attaching portion is fixed to the vehicle body part so as to be disposed closer to the outside of the vehicle body than the equipment attaching portion.