Device for fixing a drawer and piece of furniture
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Solution Overview
Problem
Existing devices for fixing drawers to movable rails on pull-out runners often require pre-adjustment of the drawer height before installing anti-lift devices, which limits post-installation adjustment and can result in the devices being pulled out of their holes.
Innovation Solution
A device with an elastic connecting section that allows for adjustable height positioning of the mounting element after installation, using a housing connected to a holder on the rail via a rotatable knurled nut for easy alignment and a deformable contour to compensate for adjustment movements, ensuring the drawer can be secured against lifting without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drawer height is adjusted before installing the anti-lift device, then the drawer position can be aligned properly, but the adjustment is no longer possible after installation which may cause the device to be pulled out of the bore
Solution Approach 1:
The connecting section is designed to be elastically deformable, allowing the mounting element's position to be dynamically adjusted after installation. The elastic design enables the connecting section to flex during adjustment and then maintain the new position, providing both secure mounting and post-installation adaptability.
Solution Approach 2:
The elastic connecting section allows for parameter changes in the position of the mounting element relative to the housing. By changing the physical state of the connecting section from rigid to elastic, the system enables position adjustment while maintaining secure attachment to the drawer bore.
2Adaptability or versatility
If the mounting element is fixed rigidly to the housing, then the structure is simple and strong, but the drawer cannot be adjusted after installation
Solution Approach 1:
The connecting section is designed as a flexible elastic component that can deform during adjustment. This flexible design allows the mounting element to move relative to the housing for height adjustment while still maintaining a relatively simple overall structure without requiring complex mechanical adjustment mechanisms.
3Ease of operation
If multiple separate components are used for the mounting element, connecting section, and housing, then assembly and disassembly are easier, but the structure becomes more complex and may reduce reliability
Solution Approach 1:
The mounting element, connecting section, and housing are formed as a single integrated component. This merging of components simplifies the overall structure by eliminating the need for multiple separate parts, while the elastic design of the connecting section within the integrated component still allows for adjustment and maintains reliability.
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
Enables easy and secure adjustment of the drawer's position post-installation, allowing for height adjustment between 0.2 mm and 20 mm, ensuring the anti-lift device remains effective and simplifies handling by allowing tool-free assembly and secure mounting.
Implementation Method 1
the connecting section is elastically designed... the cross-section of the connecting section is selected such that it is elastically movable to a certain extent... the connecting section comprises at least one deformable contour so that the connecting section can compensate for an adjustment range of an adjustment device and is guided by a bending movement during adjustment
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A device (10) for fixing a drawer (3) to a movable rail (7) of a pull-out guide (6) comprises a holder (11), which is fixed on the rail (7) and on which a position-adjusting device (12, 18) is provided in order to position the drawer (3) adjustably relative to the rail (7), and a housing (14) which is placed onto the holder (11) and is connected via at least one connecting section (15) to at least one mounting element (16) which is fixable to a side frame (4) of the drawer (3), wherein the connecting section (15) is elastic, and the position-adjusting device (12, 13) is adjustable when the mounting element (16) is mounted. This allows the drawer (3) to be secured against being lifted off the rail (7).