Anti-release system for a sliding drawer
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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 featuring a perimeter frame with a front segment and C-connected segments, including a translatable arm with a protruding tooth that engages a cavity in the front segment to prevent vertical disengagement, and an adjustable element for inclination adjustment using a screw mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex constraint means are used to prevent vertical disengagement, then reliability is improved, but device complexity increases and ease of manufacture deteriorates
Solution Approach 1:
The constraint system is divided into separate functional elements: the cavity in the front segment and the protruding tooth on the arm. This segmentation allows each element to be simple in structure while collectively providing reliable vertical constraint.
Solution Approach 2:
The vertical constraint function is extracted as a separate mechanism (cavity-tooth engagement) independent from the horizontal sliding function. This allows the constraint means to be simple and dedicated, improving reliability without adding overall system complexity.
2Reliability
If complex constraint means are used to prevent vertical disengagement, then reliability is improved, but ease of manufacture deteriorates
Solution Approach 1:
The constraint system is divided into separate functional elements: the cavity in the front segment and the protruding tooth on the arm. This segmentation allows each element to be simple in structure while collectively providing reliable vertical constraint.
Solution Approach 2:
The constraint mechanism uses simple, inexpensive geometric features (cavity and tooth) that can be easily manufactured using basic machining or molding operations, avoiding complex or expensive manufacturing processes.
3Measurement precision
If sophisticated adjustment devices are used, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The adjustment mechanism allows dynamic repositioning of the arm along the front segment during installation, enabling precise positioning without complex adjustment devices. The system transitions from a fixed to an adjustable configuration during assembly.
Solution Approach 2:
The system provides self-alignment and self-adjustment capabilities during installation, where the arm can be freely positioned along the front segment to achieve correct alignment, eliminating the need for sophisticated external adjustment devices.
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 provides a simple, cost-effective, and easy-to-use vertical restraint system that securely prevents accidental lifting of drawers or shelves, allowing for precise adjustment and easy assembly, while being adaptable for retrofitting existing systems.
Implementation Method 1
the free end of the arm opposes a lifting of the drawer or shelf by abutting against a part of the stop element
Implementation Method 2
the element is rotatably mounted, it is preferred that it is provided with a thread and is screwed into the arm to protrude from the arm via an adjustable-protrusion portion
Data Source
AI summary
A sliding drawer or shelf (12) 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 (20) for linearly moving the drawer or shelf with respect to the piece of furniture, the guide comprisinga part (22) that can be fixed on the piece of furniture, anda part (24) 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 (80) 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.