Drive device for a movable furniture part
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Solution Overview
Problem
Existing drive devices for furniture, particularly drawers, face challenges in achieving a uniform panel picture and sufficient overpressing stroke due to tolerance issues and the need for additional components like depth adjusting wheels, which can lead to unreliable triggering and aesthetic inconsistencies.
Innovation Solution
A coupling device is introduced between the transmission device and the triggering mechanism, allowing for movement from an uncoupling to a coupling position, ensuring motion-coupling between the transmission device and the triggering mechanism, eliminating the need for depth adjusting wheels and providing a stepless adjustment of the distance between components, thus ensuring a uniform panel picture and sufficient overpressing stroke.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transmission device separate from the movable furniture part is used to transmit position, then the triggering can be more reliable, but the device complexity increases
Solution Approach 1:
The transmission device is integrated within the drive device housing, with the transmission element guided in a guide track formed in the carrier. This nesting approach allows the transmission function to be incorporated without adding external complexity, resolving the contradiction between reliability and device complexity.
Solution Approach 2:
A coupling device is introduced as an intermediary element between the transmission device and the triggering mechanism. This coupling device ensures reliable motion transmission while maintaining design flexibility, thereby achieving reliable triggering without proportionally increasing overall device complexity.
2Shape
If depth adjusting wheels are used to achieve uniform panel picture, then the aesthetic consistency improves, but the device complexity and manufacturing cost increase
Solution Approach 1:
The coupling device is designed to be movable, allowing it to automatically adjust its position to compensate for tolerance variations. This dynamic adjustment eliminates the need for static depth adjusting wheels, achieving uniform panel picture without increasing device complexity.
Solution Approach 2:
The coupling device self-adjusts its position based on the relative positions of the transmission device and triggering mechanism, automatically compensating for manufacturing tolerances. This self-service capability eliminates the need for additional adjusting components, resolving the contradiction between aesthetic consistency and device complexity.
3Length of moving object
If the coupling device allows movement from uncoupling to coupling position, then the overpressing stroke is sufficient, but the device complexity increases
Solution Approach 1:
The coupling device combines multiple functions: it transmits motion, allows position adjustment, and enables sufficient overpressing stroke. By merging these functions into a single component rather than using separate mechanisms, the solution achieves the required overpressing stroke without proportionally increasing device complexity.
Data Source
AI summary
A drive device for a movable furniture part includes a support, an ejection device movable relative to the support to eject the movable furniture part, a locking device for locking the ejection device, and a trigger mechanism for moving the locking device out of the locking position. The trigger mechanism is activatable by overcompression of the movable furniture part into an overcompression position behind the closing position, and the movable furniture part is movable by the ejection device in the opening direction when the unlocking position is reached. A transmission device separate from the movable furniture part transmits the position of the movable furniture part to the trigger mechanism. A coupling device acts or is arranged between the transmission device and the trigger mechanism, and the coupling device can be moved from an uncoupling position into a coupling position. The transmission device can be movably coupled to the trigger mechanism.