Home-Automation Actuator Vibration Isolation at the Torque Support
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Solution Overview
Problem
Existing motorized drive devices for closure, screening, or solar protection installations generate noise due to vibrations transmitted from the electric motor and gearbox to the surrounding structure, with inadequate vibration damping in prior art solutions.
Innovation Solution
An electromechanical actuator with a mechanical vibration filtering module and a vibration absorption module, which includes a flexible ring and a rigid ring, provides improved damping by mechanically linking the casing to the torque support and allowing rotational freedom, minimizing the transmission of vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If vibration dampers are mounted inside the housing of an electromechanical actuator, then some vibration filtering is achieved, but the vibration filtering between the actuator housing and the fixed point is not optimal
Solution Approach 1:
The patent introduces a vibration absorption module as an intermediary element between the actuator housing and the fixed mounting point. This module includes a vibration absorption element that mechanically links the housing to the torque support, allowing relative movement and absorbing vibrations before they are transmitted to the supporting structure. The intermediary element acts as a buffer that decouples the vibration source from the structure.
Solution Approach 2:
The patent changes the mechanical parameters of the connection between the housing and the torque support by introducing a compliant vibration absorption element. This element has specific mechanical properties (flexibility, damping characteristics) that differ from rigid connections, allowing it to absorb vibrations while still providing the necessary mechanical linkage for torque transmission.
2Stability of the object's composition
If the actuator housing is rigidly connected to the torque support, then structural stability is maintained, but vibrations are transmitted to the supporting structure causing noise
Solution Approach 1:
The patent applies local quality by making only the vibration-prone connection between the housing and torque support compliant through the vibration absorption module, while maintaining rigid connections elsewhere in the actuator structure. This localized compliance allows vibration isolation without compromising the overall structural stability needed for proper actuator operation.
Solution Approach 2:
The vibration absorption module serves as an intermediary between the rigid actuator housing and the torque support, allowing the housing to remain structurally stable while the intermediate element absorbs vibrations and prevents their transmission to the supporting structure, thereby reducing noise.
3Object-affected harmful factors
If a mechanical vibration filtering module is added to connect the housing to the torque support, then vibration filtering is improved, but the device complexity increases
Solution Approach 1:
The patent segments the actuator structure into distinct functional modules: the actuator housing containing the motor, the torque support for mounting, and the intermediate vibration absorption module. This segmentation allows the vibration filtering function to be added as a separate, manageable component rather than redesigning the entire actuator structure.
Solution Approach 2:
The vibration absorption module is introduced as a relatively simple intermediary component that provides vibration filtering without requiring complex mechanisms. The module includes a vibration absorption element with specific mechanical properties that naturally dampen vibrations, avoiding the need for complex active control systems or multiple filtering stages.
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 solution effectively reduces noise by optimizing vibration damping, ensuring that the actuator operates more quietly and efficiently, with enhanced mechanical connection and absorption mechanisms.
Implementation Method 1
The vibration absorption module mechanically links the housing to the torque support in translation perpendicular to the first axis of the actuator, allowing one degree of rotational freedom between the housing and the torque support around the first axis
Implementation Method 2
The vibration absorption module may include a first ring made of flexible material, in particular elastomeric and/or viscoelastic material, arranged around a part of the torque support
Implementation Method 3
The mechanical vibration filtering module provides the mechanical connection between the housing and the torque support, which rotates about a first axis of the actuator
Data Source
Figure 1~2
Figure 3
Figure 4~6
AI summary
Home-automation actuator (11) comprising a motor (16), a housing (17), a mechanical module for filtering vibrations (33; 33a; 33b; 33c), a module for absorbing vibrations (130) and a torque support (21), the mechanical module comprising a first end (35, 135) and a second end (39, 139), - the first end (35, 135) being connected to the housing (17), - the second end (39, 139) being connected to the torque support (21), the mechanical module providing the connection between the housing (17) and the torque support so as to rotate around a first axis (X) of the actuator, the absorption module translationally connecting the housing (17) to the torque support (21) allowing a rotational degree of freedom between the housing (17) and the torque support (21).