Drawer Retraction Mechanism With Push-Open Slide-Out
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Solution Overview
Problem
Drawers without handles are difficult to open due to the spring's prestress, making them hard to initiate movement from the closed position with existing retraction devices.
Innovation Solution
A slide-out arrangement is coupled to the coupling piece, allowing for a controlled opening by adjusting the sliding piece to move the drawer from a closed to a partially open position, with a spring element prestressing the sliding piece to facilitate easy opening and a damper controlling the closing movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring is used to prestress the coupling piece in the retracted position, then the drawer can be automatically pulled closed, but the drawer becomes difficult to initiate movement from the closed position
Solution Approach 1:
The opening process is divided into two distinct phases: first, the slide-out arrangement is activated to move the drawer from closed to partially open position, overcoming the spring prestress; second, the coupling piece is engaged to enable automatic closing. This segmentation allows the system to provide both strong closing force and easy opening initiation.
Solution Approach 2:
Before the automatic closing action takes effect, the slide-out arrangement performs a preliminary action by manually moving the drawer to a partially open position. This preliminary movement releases the spring prestress and allows the coupling piece to be engaged, preparing the system for the automatic closing function to operate smoothly.
2Reliability
If the coupling piece is held in the retracted position by spring prestress, then the drawer closes automatically, but the drawer structure becomes more complex
Solution Approach 1:
The slide-out arrangement is integrated with the coupling piece, combining the manual opening mechanism and the automatic closing mechanism into a single unified system. The connecting part serves both to activate the slide-out arrangement and to engage with the coupling piece, reducing the number of separate components and simplifying the overall structure.
Solution Approach 2:
The connecting part performs multiple functions: it activates the slide-out arrangement by engaging with the driver, and simultaneously engages with the coupling piece to enable automatic closing. This multi-functionality reduces the need for separate dedicated components for each function, thereby simplifying the device structure.
3Object-affected harmful factors
If a damper is used to control the closing movement, then the drawer closes smoothly without hard impact, but the device complexity increases
Solution Approach 1:
The damper is integrated into the existing retraction device structure, combining the shock absorption function with the automatic closing mechanism. The damper works in conjunction with the spring and coupling piece to provide controlled closing movement, eliminating the need for a separate shock absorption system and maintaining structural simplicity.
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
The solution enhances user-friendliness by allowing easy opening and controlled closing of drawers without handles, integrating the retraction mechanism into the drawer's movement sequence and ensuring a smooth operation.
Implementation Method 1
the push-out arrangement has a spring element and that the spring element prestresses the sliding piece in the pushed-in position
Implementation Method 2
a controlled closing movement can be achieved in that a damper dampens the movement of the coupling piece from the deployed position into the retracted position
Data Source
Figure 1
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Figure 4~5
AI summary
The invention relates to a retracting device, in particular for drawers, sliding doors, hinged doors etc., comprising a coupling element which can be impinged upon by a spring (13) which can be adjusted between a retraction position and a deployed position. According to the invention, in order to allow the drawers to open in a user-friendly manner, a sliding arrangement (20) can be coupled directly or indirectly to the coupling element, and a sliding element (21) of said sliding arrangement can be adjusted when actuating said sliding arrangement.