Cable Interlock System for Furniture Drawer Safety
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Solution Overview
Problem
Conventional drawer interlock systems for residential furniture are not suitable for factory-assembled furniture, as they become misaligned due to transit impacts and material changes, leading to reduced utility and safety.
Innovation Solution
A cable interlock system that secures to anchor points on the furniture and drawers, allowing sufficient slack to regulate drawer extension, preventing simultaneous opening of multiple drawers and ensuring resilience against impacts and material changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional interlock systems with catches are installed on sides of drawers or integrated into slides, then drawer extension can be regulated, but the system becomes misaligned due to transit impacts and material changes during furniture assembly
Solution Approach 1:
The patent uses a flexible cable instead of rigid mechanical catches to create the interlock system. The cable can accommodate movements and deformations of the furniture structure without losing functionality, as it flexes to absorb dimensional changes while maintaining the interlock constraint between drawers.
Solution Approach 2:
The patent changes the physical state of the interlock mechanism from rigid (catches) to flexible (cable). This parameter change allows the system to adapt to dimensional variations in furniture materials during transit and assembly while maintaining reliable drawer extension regulation.
2Ease of manufacture
If conventional interlock systems are assembled on-site with drawer slides, then installation is flexible, but the system is not suitable for factory-assembled residential furniture subjected to impacts and material changes
Solution Approach 1:
The cable interlock system serves multiple functions: it can be installed in both on-site and factory settings, works with various drawer slide types, and accommodates different furniture configurations. This universality makes it suitable for both conventional assembly methods and modern factory-assembled furniture production.
3Ease of operation
If catches are used to regulate simultaneous operation of multiple drawers, then drawer extension is controlled, but the system becomes complex with specialized components
Solution Approach 1:
The patent extracts the essential function of the interlock system (preventing simultaneous drawer extension) from the complex mechanical catch mechanism and implements it using a simple cable system. This removes unnecessary complexity while preserving the core safety function.
Solution Approach 2:
The cable acts as an intermediary element that connects multiple drawers and translates their movement into a unified constraint system. Instead of complex direct mechanical connections between drawers, the cable mediates the interaction, simplifying the overall system architecture.
Data Source
AI summary
A cable interlock system is used to regulate extension of a plurality of drawers in a furniture to prevent tipping over. The cable interlock system includes a cable coupled to the plurality of drawers and a furniture body with an amount of slack to prevent over extension of the plurality of drawers. One or more furniture threading points is disposed on the furniture body with the cable extending therethrough. A first anchor point is disposed on one of the furniture body or one of the plurality of drawers. A cable first end of the cable is coupled to the first anchor point.