Vehicle Headlamp Self-Alignment via Projection and Recess
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Solution Overview
Problem
The existing methods for mounting headlamps on motor vehicles are inefficient due to the lack of effective alignment mechanisms, leading to increased assembly time and potential misalignment.
Innovation Solution
A motor vehicle design featuring a fascia with recesses and a headlamp with corresponding projections that align the lens with an opening, ensuring proper positioning and spacing, and using fasteners for secure attachment, along with a method that utilizes these features to align and attach the headlamp to the fascia.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional mounting methods without alignment mechanisms are used, then the assembly process is simpler in terms of components, but the assembly time increases and alignment precision deteriorates
Solution Approach 1:
The headlamp assembly performs self-alignment through the interaction between its projection and the grille's recess. The projection automatically guides the headlamp into the correct position when inserted through the opening, eliminating the need for external alignment tools or complex adjustment mechanisms during assembly.
Solution Approach 2:
The projection is pre-formed on the headlamp assembly before installation, and the recess is pre-formed on the grille. This preliminary preparation of alignment features ensures that when the headlamp is mounted, the alignment is automatically achieved without requiring additional alignment steps during the assembly process.
2Productivity
If traditional mounting methods are used, then the number of components is reduced, but the assembly time increases
Solution Approach 1:
The projection-recess mechanism enables self-alignment during assembly, allowing workers to quickly install the headlamp without requiring skilled alignment operations. The headlamp automatically positions itself correctly when the projection is inserted into the recess, significantly reducing assembly time and improving productivity.
3Shape
If the lens is positioned close to the fascia for aesthetic purposes, then the appearance is better, but the risk of damage and difficulty of maintenance increases
Solution Approach 1:
The grille structure provides different spatial relationships at different locations: the opening allows the lens to appear close to the fascia for aesthetic purposes, while the recess behind the opening provides a protective cavity that maintains a safe distance between the lens and the external environment, thus protecting the lens while maintaining appearance.
4Ease of repair
If the headlamp can be easily removed for maintenance, then the ease of repair is improved, but the reliability of secure attachment may deteriorate
Solution Approach 1:
The mounting system separates the alignment function (projection-recess) from the secure attachment function (fasteners). The projection-recess mechanism provides precise positioning and guides the fasteners, while the fasteners provide secure attachment. This segmentation allows for easy removal by simply unscreving the fasteners, while ensuring strong attachment when installed.
Data Source
AI summary
This disclosure relates to a motor vehicle with a headlamp assembly, and a corresponding method. In an example, a motor vehicle includes a fascia including an opening and a rear face having one of a projection and a recess. The motor vehicle further includes a lamp including a front face having the other of the projection and the recess. The projection and the recess are configured such that when the projection is received in the recess a lens of the lamp is aligned with the opening.