Detachable Paddle With Water Drop Cross Section
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Solution Overview
Problem
Existing detachable paddles face issues with rotation, fastening, and manufacturing complexity, and the paddle blade and rod are not easily replaceable, leading to difficulties in handling and maintenance.
Innovation Solution
A detachable paddle design featuring a hollow main paddle rod with a water drop-shaped cross section, connected to detachable rods with matching cross sections, utilizing a closed and non-closed lantern ring system with cam-shaped bulges and elastic limiting pieces for secure fastening and limiting, allowing for anti-rotation and easy assembly/disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If elastic bumps and limiting holes are used for limiting in detachable paddles with circular cross section rods, then the paddle can be assembled and disassembled, but relative rotation and shaking occur between the paddle rods
Solution Approach 1:
The patent applies asymmetry by changing the rod cross-section from circular to water drop-shaped (asymmetric shape). This asymmetric shape prevents relative rotation between connected rods while maintaining ease of assembly and disassembly through the matching asymmetric interfaces and limiting mechanisms.
2Ease of operation
If a closed end design is adopted at the fixed end to realize fastening, then the paddle can be assembled, but the manufacturing difficulty increases
Solution Approach 1:
The patent segments the fastening function into separate components: a fastening device with protruding parts that engage with corresponding recesses, and a limiting device with limiting blocks and limiting holes. This segmentation allows for easier manufacturing compared to a monolithic closed-end design while achieving reliable fastening.
3Stability of the object's composition
If the paddle blade and paddle rod are fixedly connected, then the structure is stable, but they cannot be replaced individually after being damaged
Solution Approach 1:
The patent implements a dynamic connection system that allows the paddle to transition between a stable assembled state (with limiting blocks in limiting holes preventing rotation) and a disassembled state for replacement. The detachable connecting parts enable individual replacement of blades or rods while maintaining structural stability during use.
4Ease of manufacture
If a circular cross section rod is used, then the manufacturing is simple, but the rod has the tendency to slide when being held
Solution Approach 1:
The patent replaces the circular cross-section with a water drop-shaped cross-section that features an asymmetric profile with a flat portion and a curved portion. This asymmetric shape provides better grip and prevents sliding when held, while still allowing for relatively simple manufacturing processes.
Data Source
AI summary
Disclosed is a detachable paddle comprising a main paddle rod, a first detachable paddle rod, a second detachable paddle rod, a paddle blade part and a paddle handle part, wherein the main paddle rod is connected to the first detachable paddle rod through a first connecting part, and the main paddle rod is connected to the second detachable paddle rod through a second connecting part. The main paddle rod is a hollow rod with a water drop-shaped cross section and a certain wall thickness, and the first and second detachable paddle rods are hollow rods with the same cross section shape as the main paddle rod and a certain wall thickness; and the first connecting part comprises a closed lantern ring for connecting the main paddle rod, a fastening device for fastening the first detachable paddle rod, and a limiting device for limiting the first detachable paddle rod.