Watch Strap Pulling-Strip Design for Stable Through-Hole Fit
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Solution Overview
Problem
Existing watch straps experience relative movement between strap bodies, leading to enlargement of the through hole and increased risk of falling off during wear, negatively impacting user experience.
Innovation Solution
A watch strap design featuring a first and second strap body with a pulling strip, where the pulling strip is fixed to the strap bodies and can be adjusted to restrict movement, using a connector to maintain a fixed through hole size, and optionally incorporating damping glue for enhanced wearability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If users insert fingers into the adjusting hole to push against the strap to pre-tighten it, then the initial tightening is achieved, but the through hole enlarges when the straps are connected and the strap moves relative to the traction channel, increasing the risk of falling off
Solution Approach 1:
The patent applies preliminary action by pre-positioning the pulling strip within the traction channel and configuring it to engage with the strap body before the actual tightening action occurs. The pulling strip is designed with a specific geometry that allows it to be inserted and locked into place, creating a pre-prepared mechanism that prevents subsequent movement and hole enlargement when the strap is tightened and worn.
2Adaptability or versatility
If the through hole size is adjusted by changing the connecting position of the strap bodies, then the fit can be customized, but the through hole becomes unstable and may expand during wear
Solution Approach 1:
The patent introduces the pulling strip as an intermediary element between the strap bodies. This mediator component is configured to engage with both strap bodies and the traction channel, providing a stable connecting mechanism that maintains the adjusted through hole size. The pulling strip acts as a mechanical intermediary that locks the strap bodies in their adjusted positions, preventing any subsequent movement that would cause hole expansion while preserving the customized fit.
Data Source
AI summary
A watch strap, including a first strap body, a second strap body and a pulling strip, the first strap body comprises a first section and a second section; the second strap body, the first section, and the body of the wearable device are jointly enclosed to form a through hole. an adjusting hole is defined between the second strap body and the second section. Lengths of the first section and second section are adjusted by changing the connecting position between the second strap body and the first strap body. a first end of the pulling strip is connected to the first end of the second strap body, and a second end of the pulling strip is configured to pass through the pulling channel and connect with the second end of the second strap body. The watch strap is convenient for wearing, and is not easy for falling.