Underbody Cover Assembly for BSI Sensor Protection
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Solution Overview
Problem
Noise and vibrations from the rear quarter of a motor vehicle can enter the cabin through air outlets, interfering with the operation of blind spot indicator (BSI) sensors due to debris blockage, which existing solutions fail to adequately address.
Innovation Solution
An underbody cover assembly with an upper member and a lower member, where the upper member encloses a component space for the BSI sensor and has mounting locations, and the lower member, with a U-shaped flange and screen, blocks debris and noise while allowing air flow through apertures, providing a seal to prevent interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the air outlet is opened to allow air flow, then air circulation is maintained, but noise and vibrations enter the cabin
Solution Approach 1:
The patent employs a mesh screen or perforated material in the lower member of the underbody cover assembly. This porous structure allows air to pass through while blocking noise and vibrations from entering the cabin, resolving the contradiction between maintaining air flow and preventing harmful acoustic factors.
2Reliability
If the air outlet is covered to block debris, then BSI sensor protection is improved, but air flow is restricted
Solution Approach 1:
The mesh screen or perforated lower member provides a solution that allows air passage while preventing debris from reaching the BSI sensor. This resolves the contradiction between protecting the sensor and maintaining air flow functionality.
Solution Approach 2:
The underbody cover assembly is divided into an upper member (solid for debris blocking) and a lower member (porous for air flow). This segmentation allows each part to fulfill its specific function - the upper member protects while the lower member permits air circulation.
3Object-affected harmful factors
If a solid cover is used to block noise and debris, then protection is improved, but air flow is blocked
Solution Approach 1:
The lower member utilizes mesh screen or perforated material that selectively blocks debris and noise while permitting air flow through its porous structure, resolving the contradiction between protection and air circulation.
Solution Approach 2:
Different parts of the underbody cover assembly have different properties: the upper member is solid for maximum protection, while the lower member is porous to allow air flow. This local differentiation resolves the contradiction by applying the appropriate material property in the appropriate location.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively prevents noise and vibrations from entering the cabin while protecting the BSI sensor from debris, ensuring the sensor's accuracy and the air outlet's functionality.
Implementation Method 1
the lower member covering the air outlet and having a screen for blocking debris
Implementation Method 2
providing a seal to prevent interference
Data Source
AI summary
An underbody cover assembly includes an upper member for receiving and housing a component that includes a first flange extending around a circumference of the upper member defining a component space. The component is disposable in the component space. The upper member also includes at least one mounting location having a hole for receiving a fastener there through for mounting the upper member to a body member. The underbody cover assembly also includes a lower member connected to the upper member for covering an air outlet that includes a U-shaped second flange extending inwardly around a circumference of the lower member, a screen with a plurality of apertures for blocking debris from entering the air outlet, and a seal disposed on a distal edge of the second flange for providing a seal between the lower member and the body member.