Discharge device for a mobile furniture item
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ejection devices for movable furniture parts, such as drawers and doors, require large distances for the clamping element to load the ejection force accumulator, leading to inefficiencies and potential protrusion issues, and lack a compact design that allows for joint movement of the ejection, transmission, and clamping elements.
Innovation Solution
The ejection device allows the ejection element, motion transmission element, and clamping element to move together relative to the carrier along the ejection path, with the motion transmission element fulfilling a dual function in tensioning and retrieving the ejection force accumulator, and incorporating a gear mechanism for precise control, enabling a compact design where the return element is formed by the motion transmission element.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the clamping element moves independently to load the ejection force accumulator, then the ejection force accumulator can be tensioned, but the clamping element must cover relatively large distances leading to protrusion from the furniture body
Solution Approach 1:
The patent combines the clamping element, motion transmission element, and ejection element into a single movable assembly that moves together relative to the carrier. This merging allows the ejection force accumulator to be tensioned through the coordinated movement of all three elements, eliminating the need for the clamping element to independently cover large distances and preventing protrusion from the furniture body.
Solution Approach 2:
The motion transmission element serves dual functions: it transmits motion from the clamping element to the ejection element, and it acts as the return element to retrieve the tensioning element after ejection. This multi-functionality reduces the number of separate components and simplifies the overall mechanism while maintaining effective force accumulation.
2Ease of operation
If separate return device is provided to retrieve the tensioning element, then the tensioning element can be reset, but the device complexity increases
Solution Approach 1:
The motion transmission element is designed to fulfill both the motion transmission function and the return device function. After the ejection force accumulator has tensioned and ejected the movable furniture part, the motion transmission element automatically retrieves the tensioning element back to its initial position, eliminating the need for a separate return device and reducing overall system complexity.
3Ease of manufacture
If the ejection device uses traditional separate components for ejection, transmission, and clamping, then each component can be optimized independently, but the overall device size increases and may protrude from the furniture body
Solution Approach 1:
The patent merges the ejection element, motion transmission element, and clamping element into a single integrated assembly that moves together as one unit relative to the carrier. This consolidation reduces the overall footprint of the ejection device, preventing it from protruding from the furniture body while maintaining the ability to optimize each component's design within the integrated structure.
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 design reduces the number of components, ensures precise tensioning of the ejection force accumulator, and allows for a safer and simpler mechanism, preventing unwanted triggering and ensuring the ejection device does not protrude, while also enabling active retraction of the furniture part during closure.
Implementation Method 1
an ejection force accumulator (5) which applies force to the ejection element (4) in the opening direction of the movable furniture part (2)
Implementation Method 2
a return device for moving the tensioning element (7) into a return position, the return device being a return element (14) that can be coupled to the tensioning element (7) and has a return force accumulator (15) acting on the return element (14)
Data Source
Figure 1a
Figure 1b
Figure 2
AI summary
Ejection device (1) for a movable furniture part (2), comprising a carrier (3), in particular designed as a housing, an ejection element (4) for ejecting the movable furniture part (2) from a closed position (SS) along an ejection path (A) into an open position (OS), an ejection force storage device (5) that applies force to the ejection element (4) in the opening direction (OR) of the movable furniture part (2), wherein the ejection force storage device (5) engages on one side the carrier (3) and on the other side the ejection element (4), and a clamping device (6) for clamping the ejection force storage device (5), wherein the clamping device (6) has a clamping element (7) that can be coupled to the movable furniture part (2) and a motion transmission element (8), in particular rotatable, between the clamping element (7) and the ejection element (4).wherein, when tensioning the ejection force storage device (5), the tensioning element (7) and the ejection element (4) are coupled by the motion transmission element (8) and movable in opposite directions (R1, R2), wherein the ejection element (4), the motion transmission element (8) and the tensioning element (7) are movable together relative to the support (3) at least over a first part of the ejection path (A).