Table Saw Support Structure with Spring-Assisted Folding Mechanism
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Solution Overview
Problem
Conventional mobile table machine stands are not safe and convenient to use due to the need for significant upward force to lift the table saw, which can result in accidents if the force is insufficient or if the stand is improperly operated.
Innovation Solution
A support structure with a top frame unit and a folding mechanism that includes first and second legs, connecting members, and wheels, allowing the table saw to be easily transitioned between horizontal and vertical positions for safe and convenient movement and storage, with a locking mechanism to ensure stability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the conventional mobile table machine stand uses a folding mechanism with first legs and second legs connected by connecting members, then the stand can be collapsed for storage and transported, but significant upward force is required to lift the table saw during extension, creating safety hazards
Solution Approach 1:
The spring mechanism is pre-loaded to store elastic potential energy that automatically activates during the extension process. When the stand transitions from collapsed to extended position, the spring releases stored energy to provide upward force on the platform, eliminating the need for users to manually lift the heavy table saw. This preliminary energy storage and automatic release resolves the contradiction by making the extension operation easy while maintaining collapsibility.
Solution Approach 2:
The spring acts as an intermediary element between the folding mechanism and the platform. It mediates the force transmission during extension, converting the mechanical motion of leg deployment into useful upward force that assists platform elevation. This intermediary spring mechanism resolves the safety hazard by reducing the direct manual lifting force required from users.
2Device complexity
If the conventional stand relies on user applied force to overcome gravity during lifting, then the structure remains simple, but the operation becomes unsafe due to potential platform collapse if insufficient force is applied
Solution Approach 1:
The spring mechanism provides beforehand cushioning by pre-storing elastic energy that cushions against the gravitational force during platform elevation. This energy cushion ensures that even if user force is insufficient or improperly applied, the spring's stored energy will complete the extension motion safely, preventing platform collapse and protecting users from injury.
Solution Approach 2:
The spring mechanism enables self-service by automatically providing the necessary force assistance during extension without requiring precise user control or monitoring. The spring self-activates based on the geometric changes during folding/unfolding, making the system safety-critical functions autonomous rather than dependent on user skill or attention.
3Device complexity
If the stand uses pins and holes for locking the first legs in position, then the structure remains simple, but the operation becomes inconvenient requiring removal and reinsertion of pins during extension
Solution Approach 1:
The locking mechanism transitions from a static pin-in-hole system to a dynamic spring-loaded system that automatically engages and disengages based on the stand's configuration. The spring-driven locking mechanism dynamically responds to the folding/unfolding motion, automatically securing the platform in extended or collapsed positions without requiring manual pin manipulation. This resolves the contradiction by making the locking function automatic while maintaining structural simplicity.
Solution Approach 2:
The locking mechanism performs self-service by automatically locking and unlocking based on the stand's position changes during folding and extension. The spring mechanism detects the configuration state and autonomously engages locking elements at appropriate positions, eliminating the need for users to manually remove and reinsert pins. This self-activating locking function improves operational convenience while keeping the overall structure simple.
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 support structure provides high operational safety, convenience, and structural stability by allowing easy conversion between positions, reducing the risk of accidents and facilitating efficient movement of the table saw.
Implementation Method 1
a second end having a bearing portion for supporting on the floor
Implementation Method 2
a second end rotatably mounted with a wheel for moving on the floor
Data Source
AI summary
A support structure for table machine includes a top frame unit holding a table machine, and a folding mechanism movable between an extended position to support the top frame unit in horizontal and a received position to hold the top frame unit in vertical. The folding mechanism has two first legs and two second legs and two first connecting members respectively pivoted to the top frame unit, and two second connecting members and two third connecting members pivotally coupled between the front legs and the first connecting members such that when the folding mechanism is moved toward the receiving position, the first, second and third connecting members are moved with the second legs toward the first legs smoothly.