Fascia Retainer Radar Mounting Vibration Isolation
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Solution Overview
Problem
Current automotive radar installations require a separate radar bracket, increasing man-hours and complexity, and are prone to vibration-related performance instability due to external part interference.
Innovation Solution
An integrated radar installation structure within a fascia retainer that secures the radar main body directly to the vehicle, reducing vibration effects and eliminating the need for a separate bracket, while optimizing the radar's exposure to minimize radio wave interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate radar bracket is used to install the radar main body, then the radar can be installed in a location invisible from the outside, but the structure becomes complex and requires more man-hours for assembly
Solution Approach 1:
The patent integrates the radar installation function directly into the fascia retainer component. The fascia retainer includes a radar installation portion with support protrusions that directly support the radar main body, eliminating the need for a separate radar bracket. This merging of functions reduces the number of components and assembly steps while maintaining reliable radar installation in an invisible location.
Solution Approach 2:
The fascia retainer is designed to serve multiple functions: it retains the bumper fascia to the vehicle body and simultaneously provides installation support for the radar main body. The support protrusions formed by the radial arms and connecting portions create a multi-functional component that addresses both fascia retention and radar mounting requirements.
2Reliability
If a separate radar bracket is used, then the radar can be installed securely, but more man-hours are required for assembly
Solution Approach 1:
By combining the radar installation function into the fascia retainer, the patent reduces the number of separate components that need to be assembled. The radar main body is directly supported by the support protrusions of the fascia retainer, eliminating the intermediate step of installing a separate bracket, thereby reducing assembly man-hours while maintaining installation stability.
Solution Approach 2:
The support protrusions are pre-formed as integral parts of the fascia retainer during its manufacturing process. This preliminary formation of support structures eliminates the need for separate bracket installation steps, as the support functionality is already built into the fascia retainer before vehicle assembly begins.
3Reliability
If the radar is installed in a location surrounded by exterior parts, then it is invisible from the outside, but vibrations from exterior parts can affect radar performance
Solution Approach 1:
The support protrusions act as intermediary elements between the fascia retainer and the radar main body. These protrusions provide isolated support points that mechanically couple the radar to the vehicle structure while minimizing vibration transmission. The geometric design of the support protrusions creates a stable mounting configuration that reduces the impact of vibrations from surrounding exterior parts.
4Reliability
If supports contact the radar main body to prevent movement, then the radar is secured firmly, but radio wave interference may occur
Solution Approach 1:
The support protrusions are designed to contact only specific localized areas of the radar main body, such as the edges or non-radiating surfaces. This localized contact approach provides firm mechanical support while minimizing the surface area that could potentially interfere with radio wave transmission. The contact points are strategically positioned to maintain radar stability without creating significant electromagnetic interference.
Data Source
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Figure 3(a)~3(b)
AI summary
This invention is concerning an automotive radar installation structure that allows a radar main body to be assembled to a vehicle in a simple arrangement and can also contribute to stable radar performance, and a fascia retainer used to attach a bumper fascia as an exterior part of a bumper to a main body of the vehicle. The structure includes a radar main body 122 formed in a flat solid shape and having a transmission/reception surface 130 provided at one surface to transmit/receive a radio wave, and a fascia retainer 120 used to attach a bumper fascia 108 as an exterior part of a rear bumper 104 at a rear of the vehicle to the vehicle main body. The fascia retainer 120 has a fixation portion 150 fixed to the vehicle main body, and a radar installation portion 128 provided in the vicinity of the fixation portion 150 and having a recessed shape into which the radar main body 122 is fitted so that the transmission/reception surface 130 of the radar main body 122 faces outward of the vehicle.