Sliding drawer with Anti-lifting system
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing anti-release systems for sliding drawers or shelves are complex to produce and difficult to use during installation, lacking simple and effective vertical constraint mechanisms to prevent accidental detachment.
Innovation Solution
A telescopic guide system with a stop element forming a cavity to trap the free end of an arm, preventing vertical disengagement, and an adjustable protrusion for precise adjustment, integrated with a C-connected frame structure for easy assembly and retrofitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If known constraint means are used to prevent vertical disengagement, then the drawer is secured against accidental detachment, but the system becomes complicated to produce and difficult to use during installation
Solution Approach 1:
The anti-lifting system is divided into separate functional elements: a stop element with a cavity formed by a step, and an arm with a protruding tooth. This segmentation allows each component to be simple in structure while collectively providing the vertical constraint function, resolving the contradiction between reliability and device complexity.
Solution Approach 2:
The protruding tooth of the arm is inserted into the cavity formed by the step of the stop element, creating a nested configuration. This nesting arrangement provides an effective vertical constraint mechanism while keeping individual components simple and easy to manufacture, addressing both reliability and complexity concerns.
2Reliability
If complex anti-release systems are implemented, then vertical constraint is achieved, but the system becomes difficult to use during installation
Solution Approach 1:
By dividing the anti-lifting function into discrete, simple components (stop element with cavity, arm with tooth), the installation process becomes straightforward. The segmented design allows for easy alignment and assembly without requiring complex procedures, thus improving ease of operation while maintaining reliability.
Solution Approach 2:
The protruding tooth automatically engages with the cavity formed by the step during drawer assembly, providing self-aligning and self-locking behavior. This self-service characteristic eliminates the need for complex installation procedures or special tools, making the system easy to install while ensuring reliable vertical constraint.
3Reliability
If the cavity is formed by modifying the front segment surface, then vertical restraint is achieved, but the surface of the front segment is affected
Solution Approach 1:
The step is positioned at a specific location on the front segment to form the cavity, concentrating the structural modification locally rather than affecting the entire surface. This local quality approach provides the necessary vertical restraint while preserving the overall surface integrity and appearance of the front segment.
Solution Approach 2:
The step is pre-formed as an integral part of the stop element or front segment during manufacturing, rather than requiring post-production modification of the surface. This preliminary action ensures the cavity is ready for engagement before assembly, avoiding surface damage while achieving reliable vertical restraint.
Data Source
Figure 1~2
Figure 3~7
AI summary
A sliding drawer or shelf of a piece of furniture, comprising: • a perimeter frame defined by the union of a front segment (14) and three C-connected segments (16, 18); • a telescopic guide for linearly moving the drawer or shelf with respect to the piece of furniture, the guide comprising • a part (22) that can be fixed on the piece of furniture, and a part longitudinally translatable with respect to the fixed part, the translatable part comprising an arm (26) which is adapted to support the drawer or shelf and on which there is mounted an adjustment element for the inclination of the drawer or shelf with respect to the fixed part, wherein the front segment comprises a stop element (50) by which a free end of the arm can be engaged, so that the free end of the arm opposes to a lifting of the drawer or shelf by abutting against a part of the stop element.