Locking Tab-and-Slot Joint for Stable Modular Furniture Assembly
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Solution Overview
Problem
Modular furniture often suffers from instability and accidental disassembly due to loose fasteners, which compromises portability and ease of use.
Innovation Solution
A modular furniture joint design featuring retention tabs and slots that require parallel movement to disengage, preventing accidental disassembly and loosening, utilizing a locking tab that engages a locking slot to maintain stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional fasteners (screws or nails) are used to stabilize modular furniture, then stability is improved, but ease of assembly and portability deteriorate due to complexity and permanent fastening methods
Solution Approach 1:
The joint is segmented into discrete components: a tab extending from the first panel and a slot formed in the second panel. The slot includes an insertion portion for easy entry and a locking portion with lateral walls that provide stability. This segmentation allows the joint to achieve both ease of assembly (through simple insertion) and stability (through the locking portion's lateral walls) without requiring complex fasteners
Solution Approach 2:
The patent replaces traditional mechanical fastening systems (screws, nails, bolts) with a tab-and-slot insertion mechanism. The tab simply inserts into the slot and is retained by the locking portion, eliminating the need for tools or complex mechanical fasteners while maintaining joint stability through the slot's lateral walls
2Ease of operation
If modular furniture is designed for easy assembly with simple joints, then portability and ease of use are improved, but stability and resistance to accidental disassembly deteriorate
Solution Approach 1:
The slot is divided into two functional segments: an insertion portion that accepts the tab easily and a locking portion with lateral walls that prevent disengagement. This segmentation allows the joint to be easily assembled (tab inserts into insertion portion) while simultaneously providing stability (locking portion's lateral walls prevent accidental disassembly)
Solution Approach 2:
The tab acts as an intermediary element that mediates between the first panel and the second panel. It inserts into the slot's insertion portion for easy assembly and is retained by the locking portion, providing a simple yet stable connection without requiring additional fasteners or complex mechanisms
3Stability of the object's composition
If permanent fastening methods are used to prevent disassembly, then stability is improved, but portability and ease of reconfiguration deteriorate
Solution Approach 1:
The joint is designed as a segmented, reversible system where the tab can be inserted into and removed from the slot. The slot's locking portion provides stability during use, but the entire joint can be easily reconfigured by simply withdrawing the tab, enabling modular furniture to be stable during use yet adaptable for reconfiguration or portability
Data Source
AI summary
An joint is provided for modular furniture. The joint includes a locking tab which is held in a slot such that the tab cannot be moved out of a locking section of the slot without elastically bending the tabbed panel to prevent inadvertent disassembly of the item of furniture. The tab and slot configuration may also provide increased stiffness and rigidity to the piece of furniture while allowing the piece of furniture to be assembled without fasteners such as screws or nails.