Blind Drive Damping via Segmented Elastic Mounts
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Solution Overview
Problem
Existing roller and venetian blind drives with geared motors face challenges in producing a cost-effective and reliable structure-borne sound insulation due to complex damping mechanisms that increase production costs and part complexity.
Innovation Solution
A form-fit interface between the motor seat and damping mount secures the geared motor in all degrees of freedom, allowing for a simple and economical production method with an elastic damping device that adapts to the motor and housing contours, reducing the need for complex anti-rotation geometries and enabling easy assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If damping means are mounted on an annular projection of the geared motor with additional anti-rotation geometries, then the geared motor is secured against rotation and vibrations are dampened, but complex injection molding tools are required which increase production costs
Solution Approach 1:
The damping means is divided into multiple damping elements arranged around the annular projection. Each damping element can be independently molded and then assembled, eliminating the need for complex injection molding tools while maintaining the anti-rotation function through the collective arrangement of multiple simpler components
Solution Approach 2:
The damping elements are combined with the annular projection to form an integrated damping assembly. The damping elements are received in counter-forms on the annular projection, merging the mounting structure and damping function into a single assembly that reduces production complexity while maintaining reliability
2Reliability
If damping means with anti-rotation geometries are used to prevent rotation of the geared motor, then reliable structure-borne sound insulation is achieved, but the device complexity increases due to additional geometries on multiple components
Solution Approach 1:
The damping means is segmented into multiple damping elements that are distributed around the annular projection. This segmentation reduces the complexity of each individual element while the collective arrangement maintains the anti-rotation function, thereby reducing overall device complexity without compromising reliability
Solution Approach 2:
The annular projection serves multiple functions: it provides structural support, acts as a mounting base for damping elements, and through the arrangement of damping elements in counter-forms, provides anti-rotation capability. This multi-functionality reduces the need for separate anti-rotation geometries on multiple components
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 provides reliable structure-borne sound insulation while minimizing production costs and part complexity, ensuring the geared motor is securely held and vibrations are effectively dampened without requiring additional form-fit contours on the damping device.
Implementation Method 1
damping means in the form of rubber or rubber-like inserts are arranged between the geared motor and the drive housing
Implementation Method 2
the damping device produces an elastic and damping connection between the motor seat and the damping mechanism mount
Data Source
AI summary
A venetian blind drive, with a geared motor, consisting of an electric motor and a reduction gear unit, a drive housing, a motor mount for the geared motor, a damping device arranged between the motor mount and the geared motor, and a damping mechanism for the damping means on the geared motor. A generic drive that can be produced and mounted in an easy and economical manner, has a low number of parts, and has reliable structure-borne sound insulation.