Headlight Adjusting Device Using PTFE Bushings for Vibration-Proof Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing adjusting devices for headlights require a large number of components and significant installation space to achieve simple and reliable adjustment of luminous components, leading to issues like undesirable tension and vibration, especially when using rubberized deformation elements.
Innovation Solution
The use of a deformation element, such as a Teflon-based bushing, that allows for transverse movement of the luminous component relative to the carrier without introducing bending moments or shearing stress, enabling secure mounting and vibration-proof adjustment with low static friction, thereby reducing the need for additional fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If rubberized deformation elements are used, then the adjustment mechanism can be simplified, but material flows into the gap causing bending moments and distorting the light image
Solution Approach 1:
The patent changes the material parameter from rubber to PTFE (Teflon), which fundamentally alters the friction characteristics. PTFE has extremely low coefficient of friction and does not exhibit the material flow behavior of rubber, thereby preventing distortion of the light image while maintaining adjustment functionality
Solution Approach 2:
The deformation element is designed as a simple PTFE bushing that can be easily replaced if worn. This simple component design replaces complex adjustment mechanisms while avoiding the harmful effects of rubber material flow
2Stability of the object's composition
If rubberized deformation elements are used, then initial flexibility is provided, but shearing stress impairs mobility in the transverse direction
Solution Approach 1:
The patent changes the material from rubber to PTFE, fundamentally altering the friction parameters. PTFE's low friction coefficient enables smooth movement in the transverse direction without the shearing stress problems that plague rubber-based solutions
3Ease of manufacture
If rubberized deformation elements are used, then initial mounting is simplified, but vibration-proof adjustment is not guaranteed requiring separate fixation
Solution Approach 1:
The patent changes the material properties from rubber to PTFE, which has superior friction characteristics. The low and consistent friction of PTFE provides stable, vibration-resistant adjustment without requiring additional fixation mechanisms
Solution Approach 2:
The PTFE bushing self-lubricates due to its low friction properties, providing continuous stable operation without requiring external lubrication or additional fixation systems. The adjustment mechanism is self-sufficient and vibration-resistant
4Reliability
If traditional deformation elements are used, then adjustment is achieved, but static friction is high making adjustment difficult
Solution Approach 1:
The patent fundamentally changes the friction parameter by using PTFE material with an extremely low coefficient of friction. This reduces the force required for adjustment while maintaining secure positioning, making the system both easy to operate and reliable
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 solution allows for efficient and space-conserving adjustment of headlights with reduced material flow and friction, ensuring stable light image quality and secure mounting of luminous components during adjustment and vibrations.
Implementation Method 1
the static friction is identical or negligibly greater than the kinetic friction. In terms of the frictional effect, the deformation element acts as if the areas of contact of the solids facing each other consisted of ice material
Implementation Method 2
the deformation element is moveable together with the luminous component along an adjusting pathway running perpendicular to the normal direction (N) if an adjusting force is applied onto the areas of contact in a normal direction (N)
Data Source
AI summary
An adjusting device for headlights has a luminous component supported on a carrier and a linear element for angling the luminous component around a horizontal and/or vertical adjusting axis, which is acting upon said component and arranged on an adjusting point, wherein in the region of the linear element, the luminous component is supported on areas of contact opposite the carrier and/or the luminous component by way of said type of deformation element such that if an adjusting force is applied onto the areas of contact in the normal direction, the deformation element is moveable together with the luminous component along an adjusting pathway running perpendicular to the normal direction.