Vehicle Lamp Optical Fiber Tension Adjustment for Position Stability
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Solution Overview
Problem
Vehicle lamps with optical fibers that emit light from the lateral portion face issues with sagging or deviation due to a decrease in tension, as most of the optical fiber region is exposed without being fixed to another component.
Innovation Solution
A lamp design that includes a light source unit, an optical fiber, an inner lens to fix one side of the optical fiber, a heat sink, an elastic member with adjustable tension, and an aiming bolt to manage the fiber's tension by moving the heat sink and optical fiber, ensuring the fiber remains in its original position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the optical fiber is exposed to the outside without being fixed to another component, then light emission from the lateral portion is achieved, but the optical fiber sags or deviates from its original position due to decrease in tension
Solution Approach 1:
The patent introduces a tension adjustment mechanism consisting of a tension adjustment member and an elastic member as intermediaries between the optical fiber and the housing. The tension adjustment member directly adjusts the tension of the optical fiber, while the elastic member provides flexible compensation, preventing sagging and position deviation while maintaining light emission functionality.
2Reliability
If the optical fiber is fixed rigidly to maintain position, then position stability is improved, but the ability to adjust tension is reduced
Solution Approach 1:
The patent employs a dynamic tension adjustment mechanism where the tension adjustment member can be moved to different positions to change the tension of the optical fiber.配合 The elastic member provides dynamic flexibility, allowing the system to adapt tension levels while maintaining stable positioning, thus achieving both position stability and tension adjustability.
3Reliability
If the optical fiber tension is increased to prevent sagging, then position stability is improved, but the risk of fiber damage or excessive stress increases
Solution Approach 1:
The patent enables precise control of tension parameters through the tension adjustment member, which can be positioned to achieve optimal tension levels. The elastic member further modulates the tension parameter, preventing excessive stress on the optical fiber while maintaining sufficient tension to prevent sagging, thus balancing position stability with fiber strength.
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
The design effectively adjusts and maintains the tension of the optical fiber, preventing sagging or deviation, thereby ensuring consistent and reliable light emission from the vehicle lamp.
Implementation Method 1
an elastic member disposed rearward of the heat sink, provided to be in close contact with the heat sink, and having elasticity
Data Source
AI summary
Disclosed is a lamp for a vehicle, the lamp including a light source unit including a light source and a board, an optical fiber disposed forward of the light source unit, an inner lens disposed between the light source unit and the optical fiber, provided to be in close contact with the board, and configured to fix or hold one side of the optical fiber, a heat sink disposed rearward of the light source unit and provided to be in close contact with the board, an elastic member disposed rearward of the heat sink, provided to be in close contact with the heat sink, and having elasticity, and an aiming bolt disposed rearward of the elastic member and configured to penetrate the elastic member and press a rear surface of the heat sink, in which the aiming bolt is movable in a forward/rearward direction.