Bicycle Tire Nozzle Structure Preventing Channel Blockage
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Solution Overview
Problem
Conventional tubeless tire structures face issues with airtightness between the tire bead and rim, leading to gas leakage and blockages in the nozzle channel due to burrs and fiber-based anti-puncture liquids, making inflation and pressure measurement difficult.
Innovation Solution
A tire structure with a ring-shaped tire body, a flexible sealing member, and a nozzle where the valve stem's fastening end protrudes from a through hole after inserting into a screw or clearance hole, preventing blockages and ensuring smooth gas flow into the inflating space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anti-puncture liquid with fibers is used to improve puncture resistance, then the tire's resistance to punctures is enhanced, but the nozzle channel becomes blocked by fibers
Solution Approach 1:
The harmful fibers are extracted or excluded from the nozzle channel area, allowing the anti-puncture liquid to provide puncture resistance without compromising the nozzle's ability to inflate and deflate the tire
Solution Approach 2:
The anti-puncture liquid application is localized to avoid the nozzle channel, or the nozzle channel is designed with different properties (smoother surface, different geometry) to prevent fiber accumulation while maintaining puncture resistance in other areas
2Ease of operation
If drilling through the lining is performed to create a channel for the nozzle, then the nozzle can communicate with the inflating space, but burrs are created that can block the channel
Solution Approach 1:
The nozzle base is designed with a pre-formed hole that provides a clean opening from the start, eliminating the need for post-drilling operations that would create burrs and potential blockages in the channel
Data Source
AI summary
A tire structure disposed at a rim is provided. The tire structure includes a tire body, a flexible sealing member and a nozzle. The tire body is ring-shaped and includes a groove and two beads. The flexible sealing member is connected to the tire body to form an inflating space with the groove, and the flexible sealing member includes a through hole. The nozzle is disposed at the flexible sealing member. The nozzle includes a base and a valve stem. The base includes a screw hole and is disposed at a far side of the flexible sealing member. The screw hole corresponds to the through hole. The valve stem includes a fastening end and an inflating channel. The fastening end is configured to insert into the screw hole, and the inflating channel is configured to allow the gas to pass therethrough.