Split Protective Bracket Structure for Vehicle Air Compressor Collisions
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Solution Overview
Problem
Existing protective structures for vehicles, such as those described in Japanese Patent No. 6090185, face challenges in preventing interference with devices like air compressors during collisions, as they concentrate collision energy on weak points, potentially damaging the structure and allowing the air compressor to fall.
Innovation Solution
A protective structure comprising a first bracket with a fixing portion protruding upward and a second bracket placed on this fixing portion, covering a protection target part. The second bracket is fixed to both the protection target member and the first bracket, with the brackets disposed between the protection target and an adjacent member. This configuration disperses collision energy efficiently and limits deformation of the protective bracket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single bracket structure is used to protect the air compressor, then the structure is simple, but collision energy is concentrated on one point causing structural damage and air compressor falling
Solution Approach 1:
The protective bracket is divided into a first bracket and a second bracket that are separate components. The first bracket is fixed to the vehicle body, while the second bracket is fixed to the air compressor. This segmentation distributes the collision energy across multiple components rather than concentrating it on a single structure, thereby improving protection reliability while maintaining reasonable structural complexity.
2Reliability
If the bracket abuts on the air compressor at the narrowest gap portion, then falling of the air compressor is suppressed, but the upper attachment part with low rigidity is deformed
Solution Approach 1:
The protective structure uses two separate brackets with different functions: the first bracket attached to the vehicle body and the second bracket attached to the air compressor. By distributing the protective function across these two components rather than relying on a single abutting point, the structure avoids concentrating stress on the weak upper attachment part while still preventing air compressor falling during collision.
3Reliability
If a divided bracket structure is used, then collision energy is dispersed, but the device complexity increases
Solution Approach 1:
The protective bracket is segmented into two separate brackets (first and second brackets) that work together. The first bracket is fixed to the vehicle body and the second bracket is fixed to the air compressor. This segmentation enables effective dispersion of collision energy while keeping each individual bracket component relatively simple in structure, thus achieving a balance between energy dispersion capability and device complexity.
Data Source
AI summary
A protective structure includes a first bracket and a second bracket. The first bracket includes a first fixing portion protruding toward an upper side of a vehicle. The second bracket is placed on the first fixing portion of the first bracket in a state of being divided from the first bracket and covers a protection target part to be protected from interference of a collision object in a vehicle up and down direction. The second bracket is fixed to a second fixing portion provided on a protection target member including the protection target part on an upper side of the second bracket, and is further fixed to the first fixing portion of the first bracket on a lower side of the second bracket. The first bracket and the second bracket are disposed between the protection target part and an adjacent member disposed adjacent to the second bracket.