Pivotal Measuring Wheel Cable Protection
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Solution Overview
Problem
Conventional measuring wheels face issues with cable exposure leading to moisture-related malfunctions and cable wear due to their design, where cables are not effectively protected from environmental factors and are prone to damage during storage and use.
Innovation Solution
The design incorporates a handle set with a hollow handle seat and a pivotal rod system featuring arc-contoured bodies and semicircular holes to securely route and shield cables, ensuring they remain protected from the environment and are not compromised during pivoting or storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If cables are exposed on the first rod and second rod to allow pivoting, then the structure is simple and easy to manufacture, but the cables are easily stained by environmental moisture and may not work properly
Solution Approach 1:
The cable is nested within the hollow interior of the first rod and second rod, allowing the cable to be protected inside the rod structure while still enabling pivoting motion between the rods
2Ease of operation
If the first rod is sleeved on the second rod for telescopic storage, then storage and carrying are easier, but the cables cannot be telescopically retracted and are folded in the rods making them easily worn and broken
Solution Approach 1:
The cable is nested within the hollow interior of the telescopic rod structure, allowing the cable to move with the rods during extension and retraction while being protected from folding and wear
3Reliability
If cables are routed through semicircular holes in pivotal bodies, then cables are protected from exposure and damage during pivoting, but the device structure becomes more complex
Solution Approach 1:
The semicircular holes in the pivotal bodies are dynamically aligned during pivoting motion, allowing the cable to pass through smoothly while maintaining protection, rather than requiring fixed complex routing structures
Data Source
AI summary
A pivotal measuring wheel includes a handle set, a handle rod, a pivotal rod, a wheel seat, a wheel and a cable. The handle rod has a hollow handle seat and an arc-contoured first pivotal body. The first pivotal body has a first space and a first semicircular hole communicating with the first space. The pivotal rod has a hollow joint seat and an arc-contoured second pivotal body for connecting to the first pivotal body. The second pivotal body has a second space and a second semicircular hole communicating with the second space. The second space selectively communicates with the first space. The second semicircular hole selectively aligns and communicates with the first semicircular hole. The handle seat is freely pivotable relative to the joint seat without disturbing the cable.