Vehicle Front Structure Headlamp Catch Mechanism
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Solution Overview
Problem
The existing vehicle front structures with headlamps arranged on the lateral side of a shroud are prone to upward movement and detachment during external impacts, leading to potential damage to the hood panel due to reduced rigidity and improper mounting.
Innovation Solution
A vehicle front structure design featuring a pair of right and left front side frames, a shroud with a catch portion on its upper region, and headlamp housings with contact portions positioned below the hood panel's lateral ends, where the catch portion engages with the headlamp housing to restrict upward movement upon impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the headlamp is arranged on the lateral side of the shroud (outside the shroud), then the shroud rigidity is ensured, but the headlamp is likely to be moved laterally inward or detached from the vehicle body due to external impact
Solution Approach 1:
The headlamp housing serves as an intermediary component between the headlamp and the vehicle body. It provides a dedicated mounting structure with attachment portions that securely connect the headlamp to the vehicle body, preventing lateral movement and detachment while maintaining shroud rigidity.
Solution Approach 2:
The solution transitions from relying solely on the shroud structure for headlamp support to using a three-dimensional headlamp housing with multi-directional attachment portions. The housing extends in multiple dimensions to provide secure mounting points on the vehicle body, distributing the structural support function across different spatial dimensions.
2Adaptability or versatility
If the headlamp housing is located below the front lateral end of the hood panel, then the headlamp can be mounted on the lateral side of the shroud, but the headlamp housing may push the front lateral end of the hood panel upward when subjected to external impact
Solution Approach 1:
The headlamp housing is designed with attachment portions that preemptively secure the headlamp to the vehicle body structure, preventing the housing from moving upward during impact. By establishing secure connections in advance, the design counteracts the potential harmful effect of the housing pushing the hood panel upward when subjected to external forces.
3Reliability
If the headlamp is received in the shroud, then the headlamp is protected and securely mounted, but the shroud rigidity deteriorates due to the combined structure
Solution Approach 1:
The headlamp and its housing are extracted from the shroud structure and mounted on the lateral side of the shroud instead. This separation allows the shroud to maintain its rigidity as a standalone structural component while the headlamp housing provides the necessary mounting stability through its own attachment portions to the vehicle body.
Data Source
AI summary
Disclosed is a front structure of a vehicle, which comprises a pair of right and left front side frames, a shroud installed between respective front ends of the side frames, a pair of right and left headlamps each arranged on a lateral side of a corresponding one of laterally opposite sidewalls of the shroud and provided with a headlamp housing serving as an outer shell thereof, and a hood panel adapted to cover above the shroud when it is in a fully closed position. In this front structure, each of the headlamp housings has a contact portion located below a corresponding one of opposite front lateral ends of the hood panel in the fully closed position, and each of the sidewalls of the shroud has an upper region provided with a catch portion which is disposed above and in opposed relation to the contact portion of a corresponding one of the headlamp housings and adapted to come into contact with the contact portion when the headlamp housing is applied with an eternal impact force, so as to restrict an upward movement of the headlamp.