Headlight Gear Shift Mechanism for Resolution-Speed Switching
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Solution Overview
Problem
Existing headlight devices face a challenge in simultaneously achieving high-resolution optical axis adjustment and high-speed dynamic angle correction due to the contradictory relationship between feed accuracy and speed of the driving shaft, which limits the flexibility in switching between resolution and speed during operation.
Innovation Solution
A gear shift adjusting mechanism that includes a switch unit with a first rotation shaft and a link member, allowing for the adjustment of the distance between the rotation shaft and engaging parts to change the movement resolution of the optical module, enabling switching between high-resolution and high-speed adjustments by modifying the deceleration ratio of the movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the feed accuracy of the driving shaft is increased to achieve high resolution adjustment, then the resolution of optical axis orientation is improved, but the feed speed decreases and cannot instantaneously correct dynamic angle changes
Solution Approach 1:
The patent applies dynamics by making the deceleration ratio changeable during operation. The driving shaft can switch between a first deceleration ratio (for high resolution) and a second deceleration ratio (for high speed) based on operational requirements. This dynamic adjustment allows the system to adapt between precision positioning mode and rapid correction mode, resolving the contradiction between resolution and speed.
Solution Approach 2:
The patent changes the deceleration ratio parameter of the driving shaft to resolve the contradiction. By having at least two different deceleration ratios available, the system can switch between high resolution (first deceleration ratio) and high speed (second deceleration ratio) operation. This parameter change enables the driving shaft to provide both fine adjustment capability and instantaneous correction capability as needed.
2Adaptability or versatility
If a fixed deceleration ratio is used in the drive system, then the structure is simple, but the resolution and feed speed cannot be switched during operation
Solution Approach 1:
The patent introduces dynamics into the drive system by enabling the deceleration ratio to change during operation. The system transitions from a static, fixed deceleration ratio to a dynamic, adjustable deceleration ratio. This allows the driving shaft to adapt between different operational modes (high resolution vs. high speed) while maintaining a relatively simple overall structure through controlled variability.
Solution Approach 2:
The driving shaft is designed with multi-functionality by incorporating at least two different deceleration ratios. This universal design allows the same driving shaft to perform both high-resolution positioning functions and high-speed correction functions, eliminating the need for separate mechanisms for each function and thereby managing complexity while enhancing adaptability.
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
This mechanism allows for flexible switching of the optical axis adjustment resolution and speed, ensuring optimal light distribution and preventing dazzling to oncoming drivers by adjusting the optical axis based on vehicle tilts, both automatically and manually.
Implementation Method 1
the link member includes a first engaged part that is engaged with the first engaging part, and a second engaged part that is engaged with the second engaging part, and the switch unit moves a movable unit... so that at least one of a first distance between the first rotation shaft and the first engaging part or a second distance between the first rotation shaft and the second engaging part is changed
Data Source
AI summary
A gear shift adjusting mechanism includes: an adjustment unit including a first slider; an adjustment target module including a second slider; and a switch unit including a first rotation shaft and a link member supported rotatably with respect to a fixing member about the first rotation shaft. The link member includes a first engaged part that is engaged with a first engaging part of the first slider and a second engaged part that is engaged with a second engaging part of the second slider. The switch unit moves at least one of the first rotation shaft, the first engaging part, or the second engaging part so that at least one of a first distance between the first rotation shaft and the first engaging part or a second distance between the first rotation shaft and the second engaging part is changed.