Vehicle Lighting Housing Guide Lugs for Harness Routing
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Solution Overview
Problem
The complex internal size and smallness of vehicle light unit housings make it difficult to route electrical harnesses efficiently, leading to complicated and costly installations that often require additional clips to guide the harnesses correctly.
Innovation Solution
Incorporating guide lugs on the housing wall that partially close holes to constrain the path of electrical harnesses, ensuring a predefined passage and eliminating the need for additional fasteners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the housing is designed with compact internal dimensions to reduce size and weight, then the overall vehicle light unit becomes more compact and lighter, but the routing of electrical harnesses becomes more complex and difficult
Solution Approach 1:
The patent applies preliminary action by pre-defining the path for electrical harnesses through guide lugs that are integrated into the housing structure during manufacturing. These guide lugs create predetermined channels and routing paths that constrain the harnesses to follow specific trajectories, eliminating the need for complex post-assembly routing adjustments in compact spaces.
Solution Approach 2:
The guide lugs act as intermediary elements between the housing structure and the electrical harnesses. These lugs provide intermediate guidance points and constraint surfaces that mediate the interaction between the compact housing geometry and the harness routing requirements, enabling efficient space utilization while maintaining ease of installation.
2Ease of operation
If additional clips are added to guide electrical harnesses correctly, then the harness routing becomes more manageable, but the device complexity and installation cost increase
Solution Approach 1:
The patent merges the housing structure with the harness guidance function by integrating guide lugs directly into the housing walls. This combination eliminates the need for separate clips or fasteners, as the housing itself provides the guidance and constraint mechanisms. The guide lugs are formed as integral parts of the housing, reducing component count and simplifying both the device structure and installation process.
Solution Approach 2:
The housing structure provides self-service by incorporating guide lugs that automatically guide and constrain the electrical harnesses during installation. The guide lugs create self-aligning paths and constraint surfaces that enable the harnesses to be routed correctly without requiring additional guidance components or complex installation procedures. The structure serves its own harness routing needs through its inherent geometric features.
Data Source
Figure 1~2
Figure 3~4
AI summary
An optical unit (OU) is intended for use in a vehicle and comprises a housing (UB) with a wall (UB) having an external face to which is attached a control unit (CU) controlling at least one photometric function and provided with a hole (TT) allowing the passage of at least one electrical cable (FE1) interconnecting the control unit (CU) to at least one element participating in the photometric function. This wall (UB) includes at least one guide tab (PG1) partially closing its hole (TT) in a predefined area and having a shape defining a mandatory passage point (LP1) for at least one electrical cable (FE1) and constraining the path followed by the latter (FE1) inside the housing (UB).