Foldable Spade with Angle-Adjusting Turntable and Integrated Tools
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Solution Overview
Problem
Existing folding spades are cumbersome to position during folding, heavy for outdoor use, and prone to losing accessories.
Innovation Solution
A multifunctional folding spade design featuring a turntable with angle adjusting holes, a locking mechanism, weight-reducing features, and integrated tools like a scissor jaw, nail puller, and hexagonal wrench holes, along with a spade handle system connected by an elastic rope for secure and quick folding and carrying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a folding spade is designed with a turntable and locking mechanism for positioning, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The turntable is divided into multiple angle adjusting holes (0°, 45°, 90°, 180°) arranged circumferentially, allowing selective positioning at specific angles. This segmentation of the continuous rotation into discrete positions simplifies the positioning mechanism while maintaining accuracy.
Solution Approach 2:
A positioning marble is introduced as an intermediary element that fits into the angle adjusting holes to indicate and secure the selected angle. This simple mediator enables accurate positioning without complex adjustment mechanisms.
2Reliability
If the spade handle is made with multiple sections and locking mechanisms for secure connection, then connection reliability is improved, but weight increases
Solution Approach 1:
The spade handle is divided into multiple sections (first, second, and third spade handles) that can be independently connected and disconnected. This segmentation allows for secure connections when needed while enabling easy separation for storage or transport, reducing overall weight.
Solution Approach 2:
The elastic soft rope connection allows the handle sections to be easily separated and reconnected. The rope can be discarded or stored when not in use, reducing weight compared to permanent rigid connections, while still providing reliable connection when attached.
3Adaptability or versatility
If the turntable body has multiple angle adjusting holes and locking features, then positioning capability is improved, but manufacturing complexity increases
Solution Approach 1:
The angle adjusting holes are pre-drilled at specific positions (0°, 45°, 90°, 180°) during the turning process, rather than requiring complex post-processing. This segmentation of the positioning function into fixed holes simplifies manufacturing while maintaining versatile positioning capability.
Solution Approach 2:
The turntable design integrates multiple functions into a single component: rotation, positioning at multiple angles, and locking. This multi-functionality reduces the need for separate parts and simplifies the overall manufacturing process.
4Adaptability or versatility
If the spade plate includes integrated tools like saw teeth and hammer surface, then versatility is improved, but weight increases
Solution Approach 1:
Multiple tools are merged into the spade plate: saw teeth are integrated on one side, while a hammer surface is added to the other side. This combining of functions into a single component maximizes versatility without requiring separate tools, and the integrated design minimizes weight compared to multiple separate tools.
Solution Approach 2:
The spade plate is designed as a universal tool platform that can perform multiple functions: spading, sawing, hammering, and tool storage. This multi-functionality allows a single spade to replace multiple separate tools, reducing overall weight while maintaining versatility.
Data Source
AI summary
The present invention discloses a multifunctional folding spade, which comprises a spade plate and a spade handle, a turntable is welded at the tail end of the spade plate, a spade handle sleeve is provided at the head end of the spade handle, a socket is provided at the head end of the spade handle sleeve, a part of the turntable body is inserted into the socket, the turntable and the spade handle sleeve are provided with matching rotation holes, and a pin shaft passes through the rotation holes to realize the rotating connection between the turntable and the spade handle; the turntable body is further provided with a plurality of angle adjusting holes circumferentially, a locking hole is provided with at the tail end of the spade handle sleeve correspondingly, a locking bolt is provided at one side of the locking hole.