Device for moving a movable piece of furniture
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Solution Overview
Problem
Existing devices for moving furniture parts, such as drawers, often unintentionally trigger the opening process due to kinetic energy, especially when closing heavy drawers, which is undesirable.
Innovation Solution
A device with an energy accumulator and ejector mechanism that allows controlled opening and charging, featuring a locking arrangement and touch latch function to prevent unintentional triggering, utilizing a guide track and spring element to ensure the ejector moves safely and is triggered only by user input.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the power storage device is charged during closing movement of the ejector, then the device can provide power-assisted opening function, but the device may be unintentionally triggered by kinetic energy of heavy drawers
Solution Approach 1:
The locking arrangement is engaged in advance during the charging process to prevent the ejector from being unintentionally triggered by kinetic energy. The locking element is positioned to block the ejector's movement path before charging completes, creating a preliminary protective action against harmful triggering.
Solution Approach 2:
The locking arrangement acts as an intermediary mechanism between the ejector and the power storage device. It mediates the charging process by controlling when the ejector can move, allowing safe charging while preventing unintended activation through the kinetic energy of heavy drawers.
2Use of energy by moving object
If the ejector is movable during closing movement to charge the power storage device, then the charging process is enabled, but the ejector may move unintentionally causing unwanted ejection
Solution Approach 1:
The locking element is positioned in advance to block the ejector's movement path during the charging process. This preliminary protective action prevents the ejector from moving unintentionally due to kinetic energy, thereby preventing unwanted ejection while allowing safe charging.
Solution Approach 2:
The locking arrangement is engaged before the charging process completes to ensure the ejector remains stationary. This preliminary action secures the ejector in position, allowing the power storage device to be charged safely without risk of unintended ejection.
3Reliability
If the locking arrangement holds the power storage device in charged state, then unintentional triggering is prevented, but the device complexity increases
Solution Approach 1:
The locking arrangement is designed to engage and disengage automatically based on the ejector's position and the charging state. The locking element self-activates when the ejector reaches a certain position during charging and self-releases when triggered intentionally, eliminating the need for additional control mechanisms and reducing overall device complexity.
Solution Approach 2:
The locking element serves as a simple intermediary component that provides reliable charged state holding through a straightforward mechanical engagement. This minimalistic approach maintains reliability while avoiding complex control systems.
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
Prevents unintentional opening of furniture parts during closing movements, ensuring the device remains locked until intentionally triggered by the user, maintaining control and preventing unwanted ejection.
Implementation Method 1
the device has a spring element, in particular in the form of a leaf spring, arranged on the base body, wherein the spring element acts directly on the release mechanism
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
Device (1, 2) for moving a movable furniture part (53) in an opening direction relative to a furniture body (51) of a piece of furniture (50), wherein the movable furniture part (53) can be moved in the opening direction and in a closing direction opposite to the opening direction by means of guide means (52), wherein the device (1, 2) has a power storage device (4) and an ejector (6), such that with the device (1, 2) mounted on the piece of furniture (50) the movable furniture part (53) can be moved from the closed position in the opening direction under the action of the power storage device (4) during an opening process, by the power storage device (4) driving the ejector (6) from a closed position of the ejector (6) in an opening movement of the ejector (6) in an opening direction and the opening movement of the ejector (6) can be transmitted to the movable furniture part (53),wherein a charging process of the energy storage device (4) is enabled during a closing movement of the ejector (6) from an open position of the ejector (6) in a closing direction, wherein the device (1, 2) has a locking arrangement (7) with a release element (9), wherein the locking arrangement (7) is configured to hold the energy storage device (4) in a charged state in a locking position of the locking arrangement (7), wherein the ejector (6) is movable in a closing movement in the closing direction from the closed position to a release position of the ejector (6), wherein the closing movement of the ejector (6) is transferable to the release element (9) so that the release element (9) can be brought from a rest position to a release position, wherein the energy storage device (4) is unlocked in the release position of the release element (9), characterized in thatthat a closing movement of the ejector (6) is transmitted to the release element (9) by means of a release mechanism (8), wherein the device (1, 2) has a guide track (10), wherein the ejector (6) is guided in the guide track (10), wherein the guide track (10) is designed such that in a movement of the ejector (6) from an open position of the ejector (6) in the closing direction, the release mechanism (8) can be brought into a locking position, wherein the ejector (6) is in the locking position of the release mechanism (8) and the release element (9) is in the rest position, so that a release of the release element (9) by the ejector (6) is prevented when the release mechanism (8) is in the locking position.