Flush Integrated Ejection Device for Revolving Doors
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Solution Overview
Problem
Existing ejection devices for furniture, particularly revolving doors, are bulky and aesthetically unpleasing when integrated, as they require significant space and impair the appearance of the furniture they are mounted on.
Innovation Solution
A compact electromechanical ejection device with an integrated damping function that can be seamlessly mounted within a furniture wall, utilizing a flat design and a plunger actuator, allowing for a flush integration without visible components, and activated by a sensor for handle-less operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a known electromechanical ejection device is used, then the door can be opened automatically, but the device takes up a relatively large amount of space and greatly impairs the appearance of the furniture
Solution Approach 1:
The patent combines the ejection device with the furniture wall structure itself, integrating the drive mechanism and housing into the wall assembly. This merging eliminates the need for separate mounting space and allows the device to be accommodated within the existing furniture thickness, resolving the contradiction between automatic door opening functionality and space occupation.
2Ease of operation
If a known electromechanical ejection device is used, then the door can be opened automatically, but the device greatly impairs the appearance of the furniture
Solution Approach 1:
By integrating the ejection device housing with the furniture wall structure, the device becomes part of the furniture's overall design rather than a separate add-on component. This merging allows the mechanical elements to be concealed within the wall assembly, maintaining the furniture's aesthetic appearance while preserving automatic door opening functionality.
Solution Approach 2:
The ejection device is nested within the furniture wall structure, with the drive mechanism and housing contained inside the wall assembly. This nesting approach allows the device to be hidden within the furniture's existing form, preventing visual impairment while maintaining operational functionality.
3Adaptability or versatility
If the ejection device is mounted in a furniture wall, then integration is achieved, but the device must be extremely flat to be suitable for mounting
Solution Approach 1:
The patent redistributes the device dimensions by utilizing the wall's depth dimension rather than requiring excessive thickness in the protruding direction. The drive mechanism is arranged to operate within the wall's thickness, with the plunger extending only minimally to actuate the door, thereby achieving wall integration without requiring an extremely flat profile.
Solution Approach 2:
The ejection device components are nested within the furniture wall assembly, with the housing and drive mechanism contained inside the wall structure. This nesting allows the device to adapt to the wall's available space while maintaining a compact profile suitable for integration, resolving the contradiction between adaptability and thickness requirements.
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 provides a space-efficient and visually unobtrusive ejection mechanism that effectively opens and closes doors while maintaining the aesthetic integrity of the furniture, offering a handle-less operation with enhanced functionality.
Implementation Method 1
an electric motor (13), which acts via a drive worm (14) with a preferably non-self-locking pitch on its output shaft on a transmission, here a multi-stage gear transmission (15)
Implementation Method 2
a spring (53) arranged between the bottom of the opening (54) and the plunger portion (52)
Implementation Method 3
the last gear wheel (16) has segment teeth on its outer circumference and an axially extending pin (17) on a radius R to the axis of rotation of the segment gear wheel (16) engages in a connecting link (18)
Data Source
Figure 1
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AI summary
A pusher for a movable furniture element, in particular a revolving door, a piece of furniture having a body (1) with at least one wall (2) or a plurality of walls (2-6), is characterised in that the pusher is designed in such a way that it can be integrated into one of the walls (2-6) of the piece of furniture.