Lockable Push-Out Mechanism With Angled Guide Track for Furniture
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Solution Overview
Problem
Existing lockable ejection devices for furniture parts require complex and costly mechanisms, large space, and precise adjustments to ensure easy opening and closing, and often necessitate separate drivers and linkage systems.
Innovation Solution
A spring-loaded drive element with a pin that guides it through an angled guide track, featuring a locking section and a stop section, allowing for simple tensioning and releasing of the spring, and eliminating the need for separate drivers by using the guide track's inclined sections to manage the spring's force, with a guide system integrated into the furniture that includes a carcass rail and a drawer rail.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate driver and linkage system are used to eject the movable furniture part, then the ejection function can be achieved, but the device complexity and cost increase
Solution Approach 1:
The patent combines the driver and ejection pin into a single integrated drive element. The drive element has a head that acts as the driver and a pin portion that acts as the ejection pin, eliminating the need for separate components and linkage systems while maintaining the ejection function
Solution Approach 2:
The drive element serves multiple functions simultaneously: it acts as a driver to release the locking mechanism, as an ejection pin to push the furniture part open, and as a locking element when engaged with the detent recess. This multi-functionality eliminates the need for separate drivers and linkage systems
2Device complexity
If the drive element is guided in a straight guide track, then the structure is simple, but the spring cannot be effectively tensioned and released
Solution Approach 1:
The guide track includes an inclined section that is angled relative to the direction of movement of the movable furniture part. This angular geometry allows the spring to be effectively tensioned during closing and released during opening, while maintaining structural simplicity
Solution Approach 2:
The guide track changes its geometric parameters along the path of the drive element. The inclined section has a specific angle (between 30° and 80°) that optimizes spring tensioning, while other sections have different orientations to accommodate different phases of operation
3Reliability
If the drive element is locked in the closed end position, then the furniture part is secured, but the ejection mechanism cannot be activated
Solution Approach 1:
The drive element is pre-positioned in the detent recess to provide automatic locking when the furniture part is closed. The inclined section of the guide track is positioned so that during normal closing, the drive element naturally engages the detent recess, providing reliable locking without additional mechanisms
Solution Approach 2:
The locking mechanism is designed to be dynamically switchable. When the furniture part is closed, the drive element is locked in the detent recess. When the furniture part is pulled open, the drive element is released from the detent recess and moves along the inclined section, automatically transitioning from locked to unlocked state
4Ease of operation
If precise adjustment of the driver position is required, then easy closing and opening can be ensured, but the device complexity and adjustment requirements increase
Solution Approach 1:
The drive element automatically positions itself correctly through its interaction with the guide track. The inclined section and detent recess are geometrically configured so that the drive element naturally assumes the correct position during operation, eliminating the need for precise manual adjustment of the driver position
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 simplifies the locking and unlocking mechanism, reduces the need for additional drivers, and ensures reliable operation at low speeds while preventing excessive speed-induced triggering, all while maintaining structural simplicity and compact dimensions.
Implementation Method 1
a spring-loaded drive element for moving the movable furniture part from a closed end position into an open position
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 2c~2d
AI summary
Lockable pushing-out device (1) for a furniture part guided in a movable manner in or on a piece of furniture, in particular for a drawer or door, having a spring-loaded drive element (5) for moving the movable furniture part out of a closed end position into an open position, wherein the drive element (5), for the purpose of transmitting force to the movable furniture part, is arranged such that it can be displaced in a guide track (8), and wherein the guide track (8) has at least one portion (A, A') which is designed such that the furniture part can be moved by virtue of the spring-loaded drive element (5) interacting with the guide track (8).