Elevator Car Spoiler Element Vibration Decoupling
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Solution Overview
Problem
High-speed elevators generate significant noise due to vibrations from hoisting ropes and guide rollers, which are not effectively mitigated by existing technologies, affecting passenger comfort and efficiency.
Innovation Solution
The implementation of vertically extending spoiler elements with upper and lower flange portions, acoustically decoupled from the horizontal frame part of the car sling, using fixings and screws to connect them to the elevator car, ensuring they do not transmit vibrations to the cabin, and allowing for offset middle portions to maintain the original frame width without contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If spoiler elements are integrated with the car sling frame part, then structural support is improved, but noise transmission to the cabin increases
Solution Approach 1:
The patent introduces an intermediary spacing arrangement between the spoiler element and the car sling frame part, preventing direct contact while maintaining structural integrity. This intermediary gap acts as a vibration isolation barrier, allowing the spoiler to provide aerodynamic benefits without transmitting noise to the cabin through the frame structure.
Solution Approach 2:
The spoiler element is designed as a separate, independent component rather than being integrated into the frame part. This segmentation allows the spoiler to function aerodynamically while the frame part maintains its structural role, with the two components positioned at a distance to prevent noise transmission pathways.
2Ease of manufacture
If the horizontal frame part is made narrower to accommodate spoiler elements, then spoiler installation is improved, but structural width is reduced
Solution Approach 1:
Instead of reducing the horizontal width of the frame part to accommodate the spoiler, the patent positions the spoiler element in a different spatial arrangement - vertically aligned but horizontally offset from the frame part. This dimensional repositioning allows both components to coexist without compromising the frame's original width, while still enabling spoiler installation and aerodynamic 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
This solution significantly reduces noise levels during fast elevator travel by decoupling the spoiler elements from the car sling, enhancing passenger comfort and operational efficiency.
Implementation Method 1
the spoiler element is acoustically decoupled from the horizontal frame part of the car sling and thus from the car sling in total
Data Source
AI summary
Example embodiments relate to an elevator car, including a car spoiler at its top and/or bottom thereof, a car sling with a horizontal frame part on which at least one elevator cabin is supported, and at least one vertically extending spoiler element is located aside of the horizontal frame part. The spoiler element may have upper and lower flange portions, at least one of the upper and lower flanges being connected with elevator car parts located above and/or below of the frame part, and a vertically extending middle portion. The spoiler element may be arranged a distance from the frame part. An elevator car having this arrangement may reduce noise and provide better efficiency.