Engine Undercover Hook Assembly to Prevent Panel Drop During Mounting
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Solution Overview
Problem
Existing under-engine protection panels for motor vehicles often fall during assembly on the assembly line due to sudden movements, disrupting the assembly line and posing a safety risk for operators.
Innovation Solution
The implementation of L-shaped hooks and openings on the under-engine protection panel that engage with the lower front fascia cross member, allowing for vertical insertion and longitudinal translation to ensure transverse retention, preventing the panel from falling during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional attachment methods are used for under-engine protection panels, then the assembly process is simple, but the panels may fall off during transport and assembly due to sudden movements
Solution Approach 1:
The attachment mechanism is segmented into separate functional components: hooks integrated with the panel, openings in the crossmember, and retaining clips. This segmentation allows each component to perform its specific function while maintaining overall simplicity of the attachment system.
Solution Approach 2:
The hooks are pre-integrated with the protection panel during panel manufacturing, and the openings are pre-formed in the crossmember. This preliminary preparation eliminates the need for complex assembly operations and ensures proper alignment during the attachment process, preventing panel drop-off.
2Object-affected harmful factors
If the panel is securely attached to prevent falling, then operator safety is improved, but the assembly process may become more complex
Solution Approach 1:
The attachment mechanism is designed to be self-aligning and self-securing. The L-shaped hooks automatically engage with the openings, and the retaining clips self-lock into place without requiring precise manual positioning or complex fastening operations, thus maintaining ease of manufacture while ensuring safety.
Solution Approach 2:
The attachment system utilizes three-dimensional spatial engagement: hooks extend in one dimension, openings provide access from another dimension, and retaining clips secure from a third dimension. This multi-dimensional approach ensures secure attachment while keeping the assembly process simple through natural geometric alignment.
3Productivity
If the panel remains stationary during assembly, then assembly line disruption is prevented, but the attachment mechanism must provide strong retention
Solution Approach 1:
The attachment mechanism concentrates retention strength at specific critical locations: the hook-opening engagement points and the retaining clip positions. Rather than distributing attachment features uniformly across the panel, local quality ensures strong retention only where needed to prevent panel drop-off and maintain assembly line continuity.
Solution Approach 2:
The attachment mechanism uses a nested structure where hooks are integrated into the panel edge, openings are formed within the crossmember structure, and retaining clips nest within dedicated recesses. This nesting provides strong retention through multiple concentric engagement points while maintaining a compact design that doesn't interfere with assembly line operations.
Data Source
Figure 1~2
Figure 3~6
AI summary
The invention relates to a motor vehicle comprising a lower cross-member (2) of the front face and a sub-engine protection panel (4). The panel (4) comprises a front edge (6) with hooks (8) engaging, respectively, with openings (10) in the lower cross-member (2) of the front face, said hooks (8) and said openings (10) being L-shaped so as to allow, when mounting the panel (4) on the vehicle, the hooks (8) to be vertically inserted into the openings (10) and then longitudinally translated so as to ensure said hooks (8) are transversely retained. The invention also relates to a method for mounting a sub-engine protection panel (4) on a motor vehicle.