Rear View Actuator Gap Structure for Low-Friction Pivoting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing actuators for rear view devices in vehicles suffer from durability issues due to repeated pivoting movements, leading to damage and uncomfortable noise due to friction.
Innovation Solution
The actuator design includes a lower case with an accommodation space, a driving mechanism, an upper cover, and a holder with a supporting part and an extension part forming a gap with the lower case, utilizing gears and motors to pivot the rear view element, reducing friction and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mechanical structure with driving mechanism and gears is used to pivot the rear view device, then the rear view element can be pivoted to provide various viewing angles, but the durability is limited due to friction damage from repeated pivoting movements
Solution Approach 1:
The patent extracts the holder from direct contact with the lower case by forming a gap between them. This separation removes the source of friction damage from the mechanical structure, allowing the driving mechanism to operate without causing wear to the holder-lower case interface, thereby resolving the contradiction between adaptability and reliability.
Solution Approach 2:
The gap acts as an intermediary space that decouples the mechanical connection between the holder and lower case. This intermediary structure allows the holder to pivot independently without direct frictional contact with the lower case, reducing wear and improving durability while maintaining the pivoting functionality.
2Adaptability or versatility
If a mechanical structure with repeated pivoting movements is used, then various viewing angles can be achieved, but uncomfortable sound is generated due to friction
Solution Approach 1:
By extracting the holder from direct contact with the lower case through the formation of a gap, the patent eliminates the friction source that generates noise. The holder can still pivot to provide various viewing angles, but without the harmful friction-based sound generation.
3Strength
If the holder is in direct contact with the lower case during pivoting, then structural support is provided, but friction damage occurs reducing durability
Solution Approach 1:
The patent takes out the holder from direct contact with the lower case by forming a gap between them. This extraction eliminates the friction damage while the holder maintains its structural support function through its connection to the driving mechanism and upper cover.
Solution Approach 2:
The patent replaces the direct mechanical contact between holder and lower case with a gap-based system. This substitution eliminates friction-based wear while maintaining the necessary structural support through the holder's connection to the driving mechanism.
Data Source
AI summary
According to various embodiments of the present disclosure, an actuator designed for pivoting a rear view device and/or at least one rear view element of the rear view device is provided, comprising a lower case; a driving mechanism; an upper cover; and a holder, wherein the holder comprises a supporting part for the at least one rear view element and an extension part extended from the supporting part, wherein a gap is formed between an inner surface of the extension part of the holder and an outer surface of the lower case. Furthermore, a rear view device comprising such actuator as well as a vehicle with such a rear view device is provided.