Vehicular Lamp Radar Bracket Structure for Vibration Stability
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Solution Overview
Problem
Existing vehicular lamp fittings with a cantilevered radar unit attachment suffer from significant vibrations during vehicle travel, leading to changes in the radar's detection area.
Innovation Solution
A vehicular lamp fitting design with a bracket that fixes one end to the outer lens and the other end to the lamp housing, preventing cantilevered extension, and includes a detachable radar unit and cover for reduced vibrations and heat exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the radar unit is attached to a plate-like part extending downward from the lamp housing in a cantilevered manner, then the radar unit can be easily installed, but the radar unit and plate-like part widely vibrate during vehicle travel
Solution Approach 1:
The bracket is divided into multiple segments: a first bracket portion extending from the lamp housing, a second bracket portion extending from the outer lens, and a connection portion joining them. This segmentation allows each part to be independently optimized for stability while maintaining ease of assembly.
Solution Approach 2:
The patent combines multiple fixing functions into a single integrated bracket structure that simultaneously attaches to both the lamp housing and outer lens. This merging creates a unified support system that eliminates the vibration problems of cantilevered designs while simplifying the overall installation process.
2Device complexity
If the radar unit is attached in a cantilevered manner, then the structure is simple, but the detection area of the radar unit is significantly changed due to vibrations
Solution Approach 1:
The bracket extends in multiple dimensions: horizontally from the lamp housing, vertically to connect with the outer lens, and provides a mounting surface for the radar unit. This multi-dimensional configuration creates a stable three-dimensional support structure that prevents vibration-induced detection errors while maintaining reasonable structural complexity.
3Reliability
If the radar unit is fixed to the lamp housing directly, then the detection area remains stable, but the heat from the lamp unit significantly affects the radar unit
Solution Approach 1:
The bracket serves as an intermediary structure between the lamp housing and radar unit. It provides a stable mounting platform that is thermally isolated from the lamp housing, allowing the radar unit to maintain stable detection area while being protected from direct heat exposure through the intermediate bracket structure and spacing.
4Ease of repair
If the radar unit is detachably fixed to the bracket, then maintenance is easy, but the fixing structure becomes more complex
Solution Approach 1:
The fixing structure transitions from a static permanent attachment to a dynamic detachable connection. The bracket includes engagement features that allow the radar unit to be easily attached and detached, providing operational flexibility for maintenance while maintaining structural integrity during operation. The complexity is localized to the fixing mechanism only.
Data Source
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AI summary
A vehicular lamp fitting and the like capable of preventing (or suppressing) vibrations of a radar unit (and as a result, capable of preventing the detection area of the radar unit from being significantly changed) are provided. A vehicular lamp fitting includes: a lamp housing; an outer lens attached to the lamp housing, the outer lens including a recessed part and forming a first space between the outer lens and the lamp housing; a lamp unit disposed in the first space; a radar cover disposed while covering the recessed part, and forming a second space between the radar cover and the recessed part; a bracket disposed in the second space; a radar unit detachably fixed to the bracket; and a first fixing part fixing one end of the bracket to the outer lens; and a second fixing part fixing the other end of the bracket to the lamp housing.