Cable-Tensioned Mounting Profile for Compact Automatic Door Displacement
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Solution Overview
Problem
Existing displacement devices for doors in functional entities, such as furniture, are bulky, require complex adjustments, are prone to blockages, and incur maintenance issues due to incorrect cable tension settings, and often need separate drive devices that occupy space and are expensive.
Innovation Solution
A compact displacement device with a holding device using two holding cables, one elastically held and one adjustable, ensures perpendicular alignment and tensioning through a setting device, allowing easy assembly and adjustment without requiring additional space or complex integration, and includes a drive device that does not restrict movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a scissor cross holding device is used to automatically retract the mounting profile, then automatic displacement is achieved, but the device takes up a relatively large amount of space
Solution Approach 1:
The patent extracts the spring mechanism from the traditional scissor cross structure and relocates it to a separate tensioning device. This allows the scissor cross to be simplified to primarily holding and guiding functions, reducing its volume while maintaining automatic retraction capability through the relocated spring mechanism.
Solution Approach 2:
The holding device is segmented into distinct functional components: the scissor cross for mechanical advantage and guidance, separate cable connections for force transmission, and an independent tensioning device with spring for automatic retraction. This segmentation allows each component to be optimized for its specific function with reduced overall volume.
2Extent of automation
If separate drive devices are used to pull the mounting profile into end positions, then automatic displacement is achieved, but the devices require a lot of space and are expensive
Solution Approach 1:
The patent merges the drive function with the holding device by integrating a spring mechanism directly into the cable connection system. The spring-loaded tensioning device serves both as part of the holding mechanism and as the drive mechanism that automatically pulls the mounting profile to end positions, eliminating the need for separate drive devices.
Solution Approach 2:
The tensioning device with spring mechanism performs multiple functions: it maintains cable tension, provides automatic retraction force, and acts as the drive mechanism for displacing the mounting profile. This multi-functionality eliminates the need for additional dedicated drive devices, reducing space requirements and cost.
3Adaptability or versatility
If cable tensions are manually adjusted during installation, then the holding device can be adapted to specific conditions, but incorrect adjustments lead to blockages and maintenance issues
Solution Approach 1:
The spring-loaded tensioning device automatically self-adjusts to maintain optimal cable tension during operation. The spring mechanism compensates for variations in door weight and positioning requirements without requiring manual intervention, ensuring reliable operation and eliminating blockages caused by incorrect tension settings.
Solution Approach 2:
The spring mechanism provides automatic parameter adjustment of cable tension based on operational conditions. The spring rate and pre-load can be designed to automatically adapt to different door weights and positions, ensuring optimal performance across various conditions without manual re-adjustment.
4Volume of moving object
If drive devices are integrated into holding devices, then space is saved, but the integration is complex and restricts movement options
Solution Approach 1:
Rather than fully integrating the drive mechanism into the scissor cross, the patent segments the system so that the spring-loaded tensioning device connects to the scissor cross through flexible cable connections. This segmentation maintains compact overall volume while preserving the independent movement and adjustment capabilities of each component.
Solution Approach 2:
The cable connection system acts as an intermediary between the scissor cross holding mechanism and the spring-driven tensioning device. This intermediary connection allows the two mechanisms to work together in a space-efficient manner while maintaining their individual functional independence and avoiding complex direct integration.
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 device provides reliable, space-efficient, and maintenance-free operation, ensuring optimal function under stress and load, with automatic door displacement and easy installation, reducing the need for manual adjustments.
Implementation Method 1
The first holding cable (421) is routed around the first lower roller unit (431) and around the first upper roller unit (411)
Implementation Method 2
The holding device (4) comprises a first front-sided cable connection device (84), a first lower roller unit (431) supported at a lower end of the mounting profile (14), a first upper roller unit (411) supported at an upper end of the mounting profile (14)
Implementation Method 3
The second holding cable (422) is routed around the second upper roller unit (412) and around the second lower roller unit (432)
Data Source
AI summary
A displacement device includes a mounting profile vertically aligned by a holding device displaceable between first and second end positions of a driveway and connected or connectable by mounting hinges to a single-part or multi-part door. The holding device includes first and second front-and rear-sided cable connection devices, connected to each other by holding cables. The second rear-sided cable connection device includes a tensioning device with a pull spring, connected directly or via a connection sledge to the holding cable and is connected to a pull sledge, into which a tensioning screw is screwed, by means of which the pull sledge can be displaced within a bearing profile along its longitudinal axis in order to tension the pull spring. The first front- or rear-sided cable connection device includes a setting device with a setting sledge, connected to the fixed holding cable and cooperates with a fixedly held setting screw.