Actuator Vibration Absorber for Noise Reduction
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Solution Overview
Problem
Existing actuators generate noise due to vibrations between the meshed worm and worm wheel, leading to overall noise issues during operation.
Innovation Solution
Incorporating resilient vibration absorbers on the control module housing, which protrude above the plane surface and are compressed by other components like the printed circuit board or connector, to absorb vibrations and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a motor and gearbox are used to provide driving force, then the actuator can achieve the required output torque and speed, but vibration and noise are generated during operation
Solution Approach 1:
The patent introduces a resilient vibration absorber as an intermediary element between the motor and the gearbox housing. This absorber acts as a mediator that decouples the vibration transmission path, allowing the motor to generate required torque while preventing vibration from being transmitted to the gearbox housing and radiating as noise.
Solution Approach 2:
The patent converts the harmful vibration energy into beneficial elastic deformation energy by using the resilient vibration absorber. The absorber is designed to deform elastically under vibration, converting kinetic vibration energy into elastic potential energy, which is then dissipated, thereby reducing noise while maintaining the required power transmission.
2Object-generated harmful factors
If a resilient vibration absorber is mounted on the control module housing, then noise is reduced by absorbing vibrations, but the structural complexity of the housing increases
Solution Approach 1:
The patent applies local quality by mounting the resilient vibration absorber only at specific locations on the control module housing where vibration transmission occurs, rather than redesigning the entire housing structure. This localized approach reduces noise effectively while minimizing the increase in overall structural complexity.
Solution Approach 2:
The patent merges the vibration absorption function with the existing control module housing structure by mounting the resilient absorber directly on the housing. This integration allows the housing to serve dual purposes: structural support and vibration absorption, thereby reducing noise without significantly increasing device complexity.
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 use of resilient vibration absorbers effectively minimizes noise by absorbing vibrations transmitted through the actuator, enhancing operational quietness.
Implementation Method 1
the control module housing comprises at least one plane surface with a resilient vibration absorber mounted thereon
Implementation Method 2
Vibration occurs during operation of the motor, which generates noise
Data Source
AI summary
An actuator includes a motor driving a worm, a gearbox, and a motor control module. The gearbox includes a gearbox housing, a worm wheel mounted in the gearbox and meshed with the worm, and an output mechanism coaxially fixed to the worm wheel. The motor control module includes a control module housing, a printed circuit board received in the control module housing, and a connector connected to the printed circuit board and mounted at an open end of the control module housing, the control module housing connected with the gearbox housing. The control module housing comprises at least one plane surface with at least one resilient vibration absorber mounted thereon.