Sliding Door Leaf Closing Device With Counter-Directional Spring-Dampers
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Solution Overview
Problem
Sliding doors often impact limit stops when opened or closed with excessive momentum, leading to noise, potential damage, and safety hazards due to incomplete closure and rebounding.
Innovation Solution
A compact closing device with counter-directional spring-damper elements is integrated into the door leaf, allowing for decelerated opening and closing, adjustable damping, and impact protection, which is retrofittable and visually concealed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a closing device is added to displace the door leaf into a closed position, then the door closure is improved, but the device complexity increases
Solution Approach 1:
The patent combines the closing function and damping function into a single integrated closing device. The first spring-damper element provides closing force while the second spring-damper element provides damping, both acting on the door leaf through a unified carrying body structure. This merging eliminates the need for separate closing and damping devices, reducing overall complexity while maintaining reliable door closure.
Solution Approach 2:
The closing device is designed to perform multiple functions simultaneously: the first spring-damper element displaces the door into the closed position, the second spring-damper element dampens motion in both opening and closing directions, and the modular carrying body allows for easy installation and adjustment. This multi-functionality reduces the number of separate components needed.
2Shape
If a compact closing device is used, then the visual appeal is improved, but the damping capability may be reduced
Solution Approach 1:
The closing device is nested within the door leaf structure, with the carrying body containing both spring-damper elements in a compact arrangement. The first and second spring-damper elements are disposed on the carrying body in a space-efficient configuration that maintains full damping capability while presenting a compact, visually appealing exterior.
Solution Approach 2:
The closing device is segmented into distinct functional modules: the carrying body, the first spring-damper element for closing, and the second spring-damper element for damping. This segmentation allows each component to be optimized for its specific function while maintaining overall compactness. The modular design also facilitates easy installation and maintenance.
3Adaptability or versatility
If the closing device is disposed at the door leaf, then the installation flexibility is improved, but the structural complexity increases
Solution Approach 1:
The carrying body is pre-assembled with both spring-damper elements and the reception for the door leaf before installation. This preliminary assembly simplifies the installation process, as the entire closing device can be mounted as a single unit to the door leaf, reducing on-site complexity despite the integrated design.
Solution Approach 2:
The carrying body acts as an intermediary structure that simplifies the connection between the door leaf and the spring-damper elements. The reception on the carrying body provides a standardized interface for mounting to the door leaf, while the guiding profiles and catches provide standardized interfaces for the spring-damper elements, reducing structural complexity through standardization.
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 ensures smooth, quiet operation and complete closure, reducing the risk of injury and damage by absorbing excess energy and providing adjustable damping for both opening and closing operations.
Implementation Method 1
a first and a second spring-damper element (33, 37), which are disposed to be counter-directional to each other
Implementation Method 2
a first and a second spring-damper element (33, 37), which are disposed to be counter-directional to each other, wherein the second spring-damper element is adapted to displace the door leaf into the open position in a decelerated manner
Implementation Method 3
Each spring-damper element has a catch that cooperates with an associated release which are disposed in the guiding profile
Data Source
AI summary
A sliding door with a door leaf, which is suspended from at least one carriage and guided to be displaceable along a roller rail profile disposed at a wall or at a ceiling. The sliding door includes a closing device, which is suitable to displace the door leaf into a closed position in a decelerated manner. The closing device is disposed at the door leaf and includes a first and a second spring-damper element, which are disposed to be counter-directional to each other. The second spring-damper element is suitable to displace the door leaf into an open position in a decelerated manner.