Push-out device for a movable furniture part
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Solution Overview
Problem
Existing ejection devices for movable furniture parts often leave the ejection element in the way when the furniture is fully open, and require the furniture to be closed to tension the ejection force accumulator, which can be inconvenient and inefficient.
Innovation Solution
An ejection device where the ejection element rotates in the same direction during both ejection and tensioning, allowing for a full rotational path during ejection and half during tensioning, with the option for various transmission mechanisms, and a carrier with a mounting plate for protection, enabling easy assembly and movement transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the ejection element is designed to rotate in the same direction during both ejection and tensioning, then the operational efficiency is improved and the ejection element does not obstruct the open position, but the mechanical complexity increases due to the required transmission mechanisms
Solution Approach 1:
The ejection element is designed to rotate dynamically in the same direction for both ejection and tensioning operations, transitioning between different functional states while maintaining unidirectional rotation. This dynamic design allows the system to improve operational efficiency without requiring the ejection element to change rotation direction, thereby avoiding obstruction of the open position during tensioning.
Solution Approach 2:
Transmission mechanisms are introduced as intermediary components to enable the ejection element to rotate in the same direction during both ejection and tensioning. These transmission mechanisms mediate between the ejection element and the force accumulator, allowing unidirectional rotation while still achieving the opposing functions of ejection and tensioning through controlled mechanical transmission.
2Reliability
If the ejection element remains in an ejection position when the furniture door is completely open, then the ejection function is maintained, but it obstructs the storage of utensils in the furniture
Solution Approach 1:
The ejection element transitions from a static ejection position to a dynamic positioning system where it can rotate to different angular positions. During tensioning, it rotates in the same direction to assume a retracted position that does not obstruct the open furniture, while maintaining the capability to return to the ejection position when needed.
Solution Approach 2:
The ejection element is designed to automatically rotate to an appropriate position based on the operational state. Before tensioning begins, the system prepares the ejection element to rotate in the same direction, ensuring it assumes a non-obstructive position in advance, thereby preventing obstruction of utensil storage space while maintaining ejection functionality.
3Device complexity
If the ejection force accumulator is not tensioned until the furniture is closed, then the tensioning mechanism is simplified, but the operational efficiency is reduced due to the requirement to close the furniture for tensioning
Solution Approach 1:
Transmission mechanisms serve as intermediaries that enable the ejection element to rotate in the same direction during both ejection and tensioning operations. This allows the force accumulator to be tensioned during the opening motion itself, rather than requiring the furniture to be closed first, thereby improving operational efficiency while the transmission mechanisms manage the mechanical complexity.
Solution Approach 2:
The ejection element continues to rotate in the same direction throughout both the ejection and tensioning phases, creating a continuous useful action. This eliminates the interruption where the furniture would need to be closed for tensioning, allowing the tensioning process to occur continuously during the opening motion, thereby improving operational efficiency.
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
Enables the ejection element to remain functional without obstructing the open position of the furniture and allows for efficient tensioning without requiring the furniture to be closed, improving usability and design simplicity.
Implementation Method 1
an ejection force storage device that applies force to the ejection element in the opening direction of the movable furniture part
Data Source
Figure 1
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Figure 4~5
AI summary
Push-out device (1) for a movable furniture part (2), comprising a rotatable push-out element (4) for pushing out the movable furniture part (2) from a closed position (SS) to an open position (OS), wherein, when the movable furniture part (2) is pushed out, the push-out element (4) can be rotated in a rotation direction (D), having a push-out force accumulator (5) which applies force to the push-out element (4) in the opening direction (OR) of the movable furniture part (2), and having a tensioning device (6) for tensioning the push-out force accumulator (5) by means of the push-out element (4), wherein, when the push-out force accumulator (5) is tensioned, the push-out element (4) can be rotated in the same rotation direction (D) as when the movable furniture part (2) is pushed out.