Vehicle Front Structure With Detachable Equipment Mounting
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Solution Overview
Problem
Existing vehicle front structures hinder the deformation of side frames when on-board equipment is positioned between them, impairing impact load absorption.
Innovation Solution
A detachable fixation structure for on-board equipment, including a first fixation portion fixed to a cross member and a second fixation portion fixed to the side frame, allowing the equipment to detach from the side frame under impact, combined with a guide portion to facilitate downward movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the on-board equipment is fixed to the side frame, then the equipment is securely positioned, but the side frame deformation is hindered when impact load is applied
Solution Approach 1:
The fixation structure transitions from a static fixed state to a dynamic detachable state upon impact. The detachable fixation structure includes a fixation body and a detachment mechanism that allows the equipment to separate from the side frame when impact load is applied, enabling the side frame to deform freely for energy absorption while maintaining secure positioning during normal operation
Solution Approach 2:
The on-board equipment is extracted from the rigid fixed connection to the side frame and replaced with a detachable fixation structure. This allows the equipment to be separated from the side frame during impact, removing the constraint that would otherwise hinder side frame deformation and impact load absorption
2Reliability
If the on-board equipment is positioned between the side frames, then the equipment is securely supported, but the side frames cannot deform to absorb impact load
Solution Approach 1:
The detachable fixation structure enables the equipment to transition from a supported positioned state to a detached state during impact. The detachment mechanism allows the equipment to move away from the side frames when impact occurs, eliminating the harmful constraint on side frame deformation while maintaining proper support during normal vehicle operation
3Stability of the object's composition
If the power receiving device is fixed to the side frame, then the device is stably positioned, but the impact load absorption performance is deteriorated
Solution Approach 1:
The power receiving device is extracted from the permanent fixed connection to the side frame through the detachable fixation structure. This allows the device to be separated from the side frame during impact events, enabling the side frame to deform and absorb impact energy that would otherwise be transmitted to the fixed device, while maintaining stable positioning during normal operation
Data Source
AI summary
A front structure of a vehicle comprises a pair of right-and-left side frames extending in a longitudinal direction, a cross member provided to extend between the side frames, and an on-board equipment positioned between the side frames, wherein the on-board equipment comprises a first fixation portion fixed to the cross member and a second fixation portion positioned in back of the first fixation portion and fixed to the side frame through a fixation structure in which the on-board equipment is detachable from the side frame when receiving an impact load applied from a vehicle forward side.