Drawer Push-Out Locking Control for Quiet Pin Guidance
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Solution Overview
Problem
Existing drive devices for movable furniture parts, such as drawers, often generate noise due to the locking pin's interaction with the locking guide track, especially when moving heavy drawers, and prior solutions require complex damping mechanisms or separate components that may not fully address noise reduction.
Innovation Solution
A drive device with a control device that independently controls the movement path of the locking pin, allowing for quiet operation by guiding its sequence in critical areas, using a carrier with a coupling pin and a dome track, and additional mechanical components to influence the locking pin's path, decoupling it from the sole design of the locking guideway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the locking pin moves directly in the locking guideway without control, then the structure is simple, but noise is generated during locking pin movement
Solution Approach 1:
The patent introduces a control device with a coupling pin and coupling track that acts as an intermediary between the locking pin and locking guideway. The coupling pin engages with the coupling track to guide the locking pin's movement path, controlling when and how the locking pin enters the detent recess, thereby reducing noise without requiring complex damping mechanisms
Solution Approach 2:
The control device performs preliminary action by guiding the locking pin along a controlled path before it reaches the locking position. The coupling track is designed to gradually guide the locking pin into the detent recess, preventing sudden impacts and noise generation before the actual locking occurs
2Object-affected harmful factors
If damping mechanisms are added to reduce noise, then noise is reduced, but the number of components increases
Solution Approach 1:
The control device merges the noise reduction function with the existing locking mechanism structure. The coupling pin and coupling track are integrated into the locking assembly, combining the path control and noise reduction functions into a unified structure rather than adding separate damping components
Solution Approach 2:
The coupling track serves as a mechanical intermediary that controls the locking pin's movement path, replacing the need for separate damping components. The inclined area and guide area of the coupling track work together to smoothly guide the locking pin, eliminating noise without requiring additional damping parts
Data Source
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AI summary
Disclosed is a drive device (1) for a movable furniture part (2), in particular for a drawer, said device comprising a push-out device (3) for pushing the movable furniture part (2) out of a closed position (SS) into an open position (OS) and comprising a locking device (56) for locking the push-out device (3) in a locked position (VS), wherein the locking device (56) has a locking guide track (41), which is in particular cardioid, and a locking pin (36) movable and lockable in the locking guide track (41), wherein a control device (40, 38, 45, 37) is provided which is separate from the locking guide track (41) and from the locking pin (36), and the movement of the locking pin (36) in the locking guide track (41) can be at least partially controlled by the control device (40, 38, 45, 37).