Machine Subframe With Pivoting Support Legs
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Solution Overview
Problem
Existing machine bases for machine tools, such as powered circular table saws, are either bulky in storage or have limited stability in the operating position, making them inefficient for compact storage and reliable support.
Innovation Solution
A machine base with a frame that delimits a receiving space and features pivotably mounted support legs, all pivoted in the same direction for compact storage and increased stability, with articulated connections allowing translational displacement for efficient folding and unfolding, and a securing mechanism for enhanced stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If support legs are pivoted in pairs at different distances from the ground to avoid interference in storage position, then the machine base can be compact in storage, but the stability in operating position is reduced
Solution Approach 1:
The patent applies asymmetry by arranging all support legs with pivot axes at the same distance from the ground, breaking the symmetric pairing approach of prior art. This asymmetric arrangement allows all legs to pivot in the same direction without interfering with each other, enabling compact storage while maintaining stable operating position with all four legs extended.
Solution Approach 2:
The patent inverts the conventional approach by having all support legs pivot in the same direction rather than in opposite directions. This inversion eliminates the need to stagger pivot heights, allowing compact folding while maintaining stability when extended, effectively solving both storage compactness and operating stability requirements.
2Volume of moving object
If pivot axes of support legs are arranged at different distances from the ground to prevent interference, then storage position is compact, but contact area and stability in operating position are reduced
Solution Approach 1:
The patent uses asymmetric arrangement of pivot axes at uniform height, allowing all support legs to be positioned optimally for ground contact in operating position, maximizing the contact area while maintaining compact storage volume through uniform pivoting motion.
3Volume of moving object
If support legs are accommodated inside the machine frame in storage position, then the machine base is compact, but the structure becomes more complex
Solution Approach 1:
The patent segments the support legs as independent pivotable elements that can be individually folded into the machine frame. This segmentation allows compact storage while maintaining a relatively simple overall structure, as each leg operates independently with its own pivot mechanism rather than requiring a complex integrated folding system.
Solution Approach 2:
The patent implements dynamic support legs that can pivot between extended and retracted positions. This dynamic capability allows the structure to adapt between compact storage and stable operating configurations without requiring complex fixed mechanisms, achieving compactness through motion rather than complex static design.
Data Source
AI summary
The machine base frame (10) has a machine frame (20), which limits a receiving chamber in a storage position of the machine base frame for protected incorporation and support of the machine tool. Four supporting legs (30) are pivotally mounted on the machine frame. The machine base frame is transferred from its storage position into an operating position, in which the supporting legs serve for supporting the machine frame on the ground. The supporting legs are pivoted in the storage position with respect to the machine frame.