Two-Port Tire Valve Stem for Sensor Integration
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Solution Overview
Problem
Existing tire valve systems are cumbersome and inconvenient for adjusting air pressure, often requiring removal of pressure sensors, which can lead to loss and increased complexity, and introduce additional leakage points, affecting wheel balance and safety.
Innovation Solution
A two-port valve stem with a rigid construction, featuring a branched configuration that allows for air pressure adjustment through one port while a pressure sensor remains mounted on the other, eliminating the need for sensor removal and reducing the risk of leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure sensor is installed on the inflation valve, then tire pressure monitoring is enabled, but the sensor must be removed for pressure adjustment which is time-consuming and inconvenient
Solution Approach 1:
The valve stem is divided into two separate ports: one port is dedicated for pressure sensor installation and monitoring, while the other port is dedicated for inflation and pressure adjustment. This segmentation allows both functions to operate independently without interfering with each other, eliminating the need to remove the sensor for pressure adjustments.
Solution Approach 2:
The valve stem body serves multiple functions simultaneously: it provides structural support, enables pressure monitoring through the first port, and allows pressure adjustment through the second port. This multi-functionality is achieved by integrating both ports into a single valve stem assembly, allowing the system to perform monitoring and adjustment operations concurrently.
2Adaptability or versatility
If an adapter with two branches is used, then pressure sensor mounting and pressure relief are enabled, but the assembly becomes cumbersome and affects wheel balance
Solution Approach 1:
The adapter concept is merged into the existing valve stem body. Instead of using a separate adapter component with two branches, the valve stem itself is designed with two integrated ports. This merging eliminates the additional adapter component, reducing overall assembly complexity and weight while maintaining the dual-functionality of sensor mounting and pressure relief.
Solution Approach 2:
The valve stem body is designed to universally accommodate both the pressure sensor and pressure relief operations through its integrated two-port structure. This universal design eliminates the need for separate adapters or additional components, simplifying the overall assembly while enabling both monitoring and adjustment functions.
3Adaptability or versatility
If an adapter is attached to a rubber valve stem, then dual functionality is achieved, but centripetal forces cause rubber stem deformation and potential damage
Solution Approach 1:
The material parameter of the valve stem is changed from rubber to rigid material. This parameter change enables the valve stem to withstand centripetal forces during wheel rotation without deforming or damaging the embedded sensor, while still providing the required dual functionality through its integrated two-port design.
Solution Approach 2:
The valve stem is constructed from rigid material that combines the structural strength needed to resist centrifugal forces with the functionality to accommodate both sensor mounting and pressure adjustment. This material selection ensures durability and reliability under dynamic operating conditions while maintaining the required adaptability.
4Measurement precision
If manual pressure measurement is used, then tire pressure can be checked, but it requires removing the valve cap and using additional tools which is time-consuming
Solution Approach 1:
The system provides self-service pressure monitoring through the integrated pressure sensor that continuously measures and reports tire pressure without requiring manual intervention. The electronic monitoring system automatically tracks pressure levels, eliminating the need for manual measurement operations and associated time losses.
Solution Approach 2:
The mechanical manual measurement system (requiring valve cap removal and physical gauge application) is replaced with an electronic pressure sensor system. This substitution enables continuous, automatic pressure monitoring that eliminates the time-consuming manual operations while maintaining or improving measurement precision.
Data Source
AI summary
A two-port tire valve stem has a body, preferably of substantially rigid construction, with a first end portion adapted to be mounted to a wheel rim and a second end portion with at least two ports in a branched configuration, each supporting a valve. One of the valve ports may be used for inflation or deflation concurrently with the other being coupled to a pressure sensor for monitoring the air pressure in the tire. The two-port tire valve stem is adapted to be rigidly mounted to an outer of a pair of adjacent wheels, using a bracket, while its first end is adapted to be connected in fluid communication with the inner of the pair of wheels.