TPMS Sensor Valve Stem Threaded Boss Snap-Fit Connection
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Solution Overview
Problem
The existing connection structure between tire pressure monitoring sensors and tire valves is prone to loosening due to centrifugal forces and vibrations, leading to unstable and unreliable tire pressure detection.
Innovation Solution
A connection structure featuring a tire valve with an externally threaded valve stem and a rubber body with bumps, and a tire pressure monitoring sensor with a boss having a threaded hole and arc-shaped recesses, allowing for a snap-fit engagement that provides a self-locking mechanism, eliminating the need for screws and enhancing stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a screw connection is used to fasten the tire pressure monitoring sensor to the tire valve, then the sensor can be firmly connected initially, but the connection tends to loosen under centrifugal force and vibration during vehicle operation
Solution Approach 1:
The connection structure enables self-locking through the interaction between the threaded boss on the sensor housing and the threaded hole in the valve stem. As the sensor is installed and rotated, the threads automatically engage and lock the sensor in place without requiring additional fastening operations, making the system self-servicing and eliminating the need for manual screw tightening
Solution Approach 2:
The connection structure transitions from a static screw fastening system to a dynamic self-locking mechanism where the threaded engagement automatically adjusts and secures itself during the installation rotation, adapting to operational forces and maintaining connection integrity under varying conditions
2Ease of manufacture
If a separate sensor and valve assembly with screws is used, then the components can be manufactured independently, but the assembly becomes complex and prone to loosening
Solution Approach 1:
The invention merges the fastening function directly into the sensor housing by integrating a threaded boss structure, combining what were previously separate components (sensor, valve, and fastening mechanism) into an integrated assembly that reduces overall complexity while maintaining manufacturing independence of core components
3Reliability
If the sensor is firmly connected to prevent loosening, then detection stability improves, but the structure becomes more complex requiring additional locking mechanisms
Solution Approach 1:
The threaded boss and threaded hole configuration creates a self-locking mechanism that automatically secures the sensor during installation through rotational engagement, providing firm connection and detection stability without requiring additional external locking components or complex fastening systems
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
The self-locking mechanism ensures a firm and reliable connection, preventing the tire pressure monitoring sensor from loosening during rim rotation and vibration, ensuring stable and reliable tire pressure detection.
Implementation Method 1
a bump being formed on the rubber body; wherein the bump extends into the recess and is snap-fitted with the recess
Data Source
AI summary
The present invention provides a connection structure between a tire pressure monitoring sensor and a tire valve. The connection structure comprises a tire valve and a tire pressure monitoring sensor, wherein the tire valve comprises a valve stem and a rubber body disposed outside the valve stem, one end of the valve stem is provided with an external thread, and a bump is formed on the rubber body; and the tire pressure monitoring sensor comprises a housing, a boss with a threaded hole is formed on the housing, and the housing is formed with a recess on the side where the boss is situated. Among other things, the valve stem extends into the threaded hole of the boss, such that the threaded hole of the boss engages with the external thread of the valve stem, and the bump extends into the recess and is snap-fitted with the recess. The connection structure between a tire pressure monitoring sensor and a tire valve provided by the present invention ensures that the tire pressure monitoring sensor and the tire valve are firmly connected and work in a stable and reliable manner.