Rearview Mirror Folding Actuator With Elastic Motor Vibration Support
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing actuators for outside rearview mirrors in vehicles suffer from reduced durability due to excessive motor vibrations and noise during folding and unfolding operations.
Innovation Solution
An actuator mechanism with a driving motor case that elastically supports the motor to absorb vibrations and reduce noise, featuring a lower case with a shaft fixing region and an upper case with elastic support regions to restrict motor vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a driving motor is mounted in the actuator to enable folding and unfolding operations, then the functionality of the outside rearview mirror is improved, but excessive vibrations and noise occur during operation reducing durability
Solution Approach 1:
An elastic support section is introduced as an intermediary element between the driving motor and the lower case. This elastic support section absorbs and attenuates vibrations generated by the motor during operation, preventing them from being transmitted to the mirror assembly. The elastic material acts as a vibration isolator, maintaining motor functionality while protecting the overall system from vibration-induced damage.
Solution Approach 2:
The elastic support section is pre-installed in the motor accommodation portion before the driving motor is mounted. This elastic element is positioned in advance to cushion and absorb vibrations that will be generated during motor operation. By having the cushioning mechanism in place beforehand, the system is pre-prepared to mitigate vibration effects, thereby preventing durability issues before they occur.
2Ease of operation
If the driving motor operates during folding and unfolding, then the actuator performs its intended function, but excessive noise is generated due to motor vibrations
Solution Approach 1:
The elastic support section serves as a vibration isolator and noise reducer between the driving motor and the actuator housing. By absorbing high-frequency vibrations from the motor, it prevents these vibrations from being transmitted as noise to the surrounding environment and the mirror assembly, thereby reducing operational noise while maintaining full functionality.
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 actuator mechanism effectively relieves vibrations and noise, enhancing the durability and operational silence of the outside rearview mirror actuator.
Implementation Method 1
an actuator mechanism including a lower case (2000) including a shaft fixing region (2202), a driving motor (3000) including a gear-shaft (3220) configured to rotate along a first axis (X1) and transmit power and having one end engaged with the shaft fixing region (2202) to be restricted in movement in a first axial direction (X), and a body portion (3400) configured to receive power from the outside and transmit rotating power to the gear-shaft (3220) while vibrating in the first axial direction (X), an actuator module accommodated in the lower case (2000) and including a driving gear (3240) configured to receive rotating power of the gear-shaft (3220) and rotate along a second axis (Y1) and an output gear (4200) configured to receive rotating power of the driving gear (3240) and induce rotation of the outside rearview mirror, and an upper case (1000) configured to accommodate the driving motor (3000), including a first elastic support region (1100) configured to elastically support a first surface (3410) of the body portion (3400)
Implementation Method 2
at least parts of the first elastic support sections support at least a part of the first surface of the body portion so as to elastically restrict vibration of the body portion in an axial direction
Data Source
AI summary
Disclosed is a folding mechanism for an outside rearview mirror of a vehicle. In more detail, disclosed is an actuator mechanism of an outside rearview mirror for a vehicle. Here, the actuator mechanism includes a lower case including a shaft fixing region, a driving motor including a gear-shaft having one end engaged with the shaft fixing region and restricted in movement in a first axial direction and a body portion vibrating in the first axial direction, an actuator module; and an upper case including a first elastic support region and configured to cover the lower case. Here, the first elastic region elastically restricts vibration of the body portion in an axial direction.