Foldable Stand Hinge Mechanism for Quick Tool Setup
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Solution Overview
Problem
Existing foldable portable stands for tools like portable table saws are often cumbersome due to multiple parts and complex assembly/disassembly processes, making them inefficient to set up and transport.
Innovation Solution
A foldable stand design that uses pivot points and hinges to unfold and fold without the need for sliding parts or bolts, allowing for quick setup and breakdown by manipulating the top frame and leg structures, which automatically unfold or fold, and incorporates a locking mechanism for secure transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a stand is designed with multiple parts and complex assembly mechanisms, then it can provide stable support and adjustability, but it becomes unwieldy to set up and take down, requiring multiple steps and partial disassembly
Solution Approach 1:
The stand is divided into distinct modular components including a base unit, an adjustable support arm with segmented sections, and a platform assembly. Each segment can be independently positioned and locked, allowing the stand to be broken down into manageable parts for easy transport while maintaining stability when assembled. The segmentation enables the support arm to be divided into telescopic sections that can be quickly extended or retracted without complex disassembly.
Solution Approach 2:
The stand incorporates dynamic adjustment mechanisms including telescopic support arms with smooth extension and retraction, rotating joints for multi-position positioning, and height-adjustable legs. These dynamic features allow the stand to adapt to different working conditions and tool weights while maintaining ease of operation through simple mechanical movements rather than complex assembly procedures.
2Weight of moving object
If a stand is designed to be lightweight and portable, then it is easier to transport, but it may sacrifice strength and durability
Solution Approach 1:
The stand utilizes composite construction combining lightweight aluminum alloy extrusions for the main framework with high-strength steel components for critical load-bearing joints and locking mechanisms. The support arm features a telescopic design with nested aluminum tubes reinforced at connection points. This composite material approach reduces overall weight compared to all-steel construction while maintaining sufficient strength through strategic placement of higher-strength materials where needed.
Solution Approach 2:
The stand is designed as modular segments that can be easily assembled and disassembled, with each component optimized for its specific function. The base unit, support arm, and platform are separate modules connected by simple joining mechanisms. This segmentation allows the use of lighter materials in non-critical areas while concentrating strength where required, and enables the stand to be broken down for portable transport without compromising overall structural integrity.
3Reliability
If a stand uses sliding parts and bolts for assembly, then it can provide secure connections, but it requires tools and multiple steps for setup and breakdown
Solution Approach 1:
The stand incorporates self-locking mechanisms including cam-locked joints that secure connections through simple lever actions, bayonet-style connectors that automatically engage and lock when inserted, and friction-fit telescopic sections that self-center and lock without tools. These self-service features eliminate the need for bolts, screws, or sliding fasteners, allowing secure assembly and disassembly through straightforward manual operations that reduce both tool requirements and assembly steps.
Solution Approach 2:
Instead of using traditional bolt-and-nut or sliding fastener connections that require threading or gradual engagement, the stand employs inverted connection methods where components snap together or lock into place through direct insertion and immediate securing. The locking mechanisms work by engaging protrusions with recesses in a single motion rather than requiring incremental tightening, fundamentally simplifying the connection process while maintaining reliability.
Data Source
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AI summary
A foldable stand (10) for supporting an object (12), the stand being capable of being folded between an unfolded position and a thin flat folded position, comprising a top frame (26) having a generally rectangular planar configuration with front and rear support members (28, 30) interconnected with left and right spaced apart side support members (32, 34), each of the side support members having a hinge (36) generally midway along the length thereof, permitting the top frame to be folded when the stand is in the folded position, a pair of foldable leg structures (42, 44, 46), one of which is attached to each side of the top frame for supporting the top frame, a retaining structure (38) for engaging the object and a locking mechanism (40) for engaging the object, wherein manipulation of the top frame to rotate the hinge between the folded and unfolded positions causes each of the leg structures to be correspondingly moved between folded and unfolded positions.