TPMS Valve Stem Battery Replacement Without Wheel Removal
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Solution Overview
Problem
Existing Tire Pressure Monitoring Systems (TPMS) require costly and time-consuming professional maintenance to replace batteries, posing safety risks and inconvenience to users.
Innovation Solution
A TPMS sensor with an externally replaceable battery, where the battery is secured within the valve stem and connected via a spring-loaded terminal, allowing replacement without deflating the tire or removing the wheel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the battery is integrated inside the TPMS sensor housing, then the sensor structure is compact and protected, but the battery cannot be easily replaced and requires professional service
Solution Approach 1:
The TPMS sensor is divided into separable components: the sensor housing with electronics and the battery are made as distinct replaceable parts. The battery can be removed and replaced independently from the sensor housing, allowing users to maintain the sensor without replacing the entire assembly.
Solution Approach 2:
The battery is extracted from the traditional sealed integration within the sensor housing and positioned in a location that allows external access and removal. This extraction enables the battery to be replaced independently while the sensor housing remains in place on the tire valve stem.
2Ease of repair
If professional mechanics replace TPMS sensor batteries, then proper service is ensured, but maintenance cost and time increase significantly
Solution Approach 1:
The TPMS sensor system is designed to enable end-users to perform battery replacement themselves without requiring professional mechanic services. The simplified replacement process allows vehicle owners to maintain their TPMS system during regular tire maintenance visits or at home.
3Ease of operation
If the TPMS sensor requires wheel removal for battery replacement, then the battery can be accessed, but vehicle mobility is reduced and safety risks increase
Solution Approach 1:
The battery is positioned and secured within the sensor assembly during manufacturing, allowing it to be accessed and replaced through the valve stem opening without requiring subsequent disassembly of the wheel or tire. This preliminary arrangement prevents safety hazards associated with working on removed wheels.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy and safe battery replacement by users, reducing maintenance costs and time, and maintaining tire pressure monitoring capability without specialized tools.
Implementation Method 1
The electrical connection may comprise a spring-loaded terminal configured to connect or disconnect the sensor and battery as the battery is inserted or removed from the valve stem
Data Source
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AI summary
A TPMS sensor with an externally replaceable battery is disclosed. The valve stem facilitates battery replacement with a valve stem core designed to removably secure a battery within the valve stem and a sensor configured with an electrical connection designed to connect the sensor to power from the battery. The valve stem has an interior cavity configured to retain the valve stem core. The battery may be at least partially retained within the valve stem. The sensor may be configured in a sensor body connected to an end of the valve stem distal from the valve stem core. The electrical connection may comprise a spring-loaded terminal configured to connect or disconnect the sensor and battery as the battery is inserted or removed from the valve stem through a valve stem end proximal to the valve stem core, permitting battery replacement without removing or deflating a tire configured with the sensor.