Headlight Trim Cap Damping Structure for Vibration-Stable Connectors
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Solution Overview
Problem
Vibrations during driving cause premature wear and disconnection of connectors and wiring harnesses in motor vehicle headlights, leading to potential malfunctions.
Innovation Solution
A motor vehicle projector design with a housing, support, and trim ring that secures power supply connections for the lighting system and electric motor, using safety elements to prevent unplugging of plugs, thereby stabilizing the connectors against vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the headlight is secured to the wheel arch using conventional securing elements, then the headlight can be mounted, but vibration occurs between the headlight and wheel arch due to gap fluctuations
Solution Approach 1:
The securing element is divided into three distinct functional parts: a mounting portion that attaches to the wheel arch, a damping portion that absorbs vibrations, and a securing portion that fastens to the headlight. This segmentation allows each part to specialize in its function, with the damping portion specifically designed to compensate for gap fluctuations and prevent relative vibration between the headlight and wheel arch.
Solution Approach 2:
The damping portion acts as an intermediary element between the mounting portion (attached to wheel arch) and the securing portion (attached to headlight). This intermediary component absorbs and dampens vibrations, preventing direct transmission of vibrational forces between the headlight and wheel arch, thereby eliminating the harmful relative motion caused by gap fluctuations.
2Stability of the object's composition
If the headlight is secured rigidly to prevent vibration, then connection stability improves, but the headlight assembly becomes more complex
Solution Approach 1:
The securing element merges three functions (mounting, damping, and securing) into a single integrated component rather than using separate elements. This combination achieves vibration damping and secure connection simultaneously, avoiding the need for multiple separate components and reducing overall assembly complexity despite the multi-functional nature of the single element.
Solution Approach 2:
The damping portion utilizes material parameter changes through viscoelastic properties to adapt to varying vibration conditions. The material's ability to change its mechanical parameters (damping coefficient, stiffness) in response to vibrational inputs allows the securing element to maintain stable connection across different operating conditions without requiring complex adjustable mechanisms.
3Ease of manufacture
If conventional securing elements are used, then installation is simple, but manufacturing precision requirements increase due to gap fluctuations
Solution Approach 1:
The damping portion is designed beforehand to compensate for expected gap fluctuations during installation and operation. By incorporating this pre-designed cushioning capability, the system can accommodate variations in manufacturing tolerances and installation conditions without requiring extremely tight gap control, thereby reducing manufacturing precision requirements while maintaining connection stability.
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
Enhances the reliability of motor vehicle headlights by securing power supply connections and preventing connector disconnection due to vibrations, improving the stability and functionality of the lighting system.
Implementation Method 1
a damping portion (22) having a first end connected to the mounting portion (21) and a second end connected to the securing portion (23), the damping portion (22) being formed of a vibration damping material
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
The invention relates to a headlight (100) for a motor vehicle, said headlight comprising a casing (101) forming its rear face which cooperates with a mirror (102) forming its front face, an illuminating device (103) mounted on a support fixed to the casing and, fixed to the support, a motor for modifying the position of the illuminating device, and a frame. The invention also relates to a motor vehicle comprising such a device.