Movement device for drawers
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Solution Overview
Problem
Movement devices for drawers, particularly on wide drawer fronts, often fail to trigger reliably when pressure is applied opposite to the mounting position, leading to the need for costly dual-sided installations to ensure proper operation.
Innovation Solution
The movement device incorporates an overstroke mechanism where the blocking member is offset transversely to the first switching movement, reducing the necessary switching path and allowing reliable triggering even when installed on one side, with optional dual-sided installation for heavier drawers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a movement device is mounted on one side of the drawer, then part and assembly costs are reduced, but the device fails to trigger reliably when pressure is applied opposite to the mounting position
Solution Approach 1:
The blocking member is given freedom to move not only in the overstroke direction (first dimension) but also transversely to it (second dimension). This two-dimensional movement capability allows the blocking member to be reliably switched even when pressure is applied from directions other than the mounting side, resolving the contradiction between single-sided installation and triggering reliability
2Length of moving object
If the switching path of the blocking member is reduced, then the movement device can be triggered with smaller stroke paths, but the blocking member may not be reliably switched when pressure is applied from distant locations
Solution Approach 1:
By allowing transverse movement of the blocking member in addition to movement in the overstroke direction, the effective switching path is extended in a different dimension. This enables reliable triggering even with small stroke paths in the original direction, as the transverse component compensates for pressure applied from distant or angled locations
Data Source
AI summary
The invention relates to a movement device for drawers, including an extending mechanism. A blocking element can be moved from a retracted position into an open position or a partially open position by the extending mechanism, and the extending mechanism is held in the retracted position by an overstroke mechanism. The overstroke mechanism has a switching element which is held on a stop by a blocking element in the retracted position and can be lifted from the stop when an overstroke is applied onto the switching element. An improved switching behavior can be achieved in that the blocking element is offset transversely to the overstroke direction when the overstroke is applied.