Pneumatic Tire Sensor Housing Vulcanization Bonding
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Solution Overview
Problem
The existing methods for installing a sensor unit in a tire cavity require primer treatment to improve adhesiveness, leading to poor productivity and potential falling off of the sensor unit.
Innovation Solution
A pneumatic tire design featuring a rubber housing body with an opening portion for easy insertion and vulcanization bonding to the tire inner surface, eliminating the need for primer treatment and enhancing adhesiveness through controlled surface roughness and dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive or adhesive tape is used to attach the housing body to the tire inner surface, then the housing body can be fixed, but primer treatment is required in advance which reduces productivity
Solution Approach 1:
The patent changes the bonding method from adhesive-based to vulcanization-based, fundamentally altering the chemical and physical parameters of the bonding process. Vulcanization creates cross-linked bonds between the rubber housing body and the tire inner surface, eliminating the need for primer treatment and adhesive applications, thus improving productivity while maintaining or enhancing bonding reliability
Solution Approach 2:
The patent replaces the chemical-mechanical adhesive system with a thermal-vulcanization system. Instead of using adhesives that require primer treatment and controlled application, the housing body is bonded through vulcanization heat treatment, substituting the entire adhesive application process with a thermal processing step that is more efficient and does not require primer
2Reliability
If the opening portion width is reduced to prevent sensor unit from falling off, then holding property is improved, but insertion work becomes more difficult
Solution Approach 1:
The patent applies dynamic design to the opening portion, making it flexible rather than rigid. The opening portion can expand during sensor unit insertion to facilitate easy placement, then contracts or maintains its shape to securely hold the sensor unit, thus achieving both easy insertion and reliable holding without compromising either function
Solution Approach 2:
The housing body is constructed as a flexible rubber structure that can dynamically adjust its opening portion. This flexibility allows the opening to accommodate the sensor unit during insertion and then provide secure retention, solving the contradiction between easy insertion and firm holding through the inherent elastic properties of the rubber material
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
This design facilitates easy and secure insertion of the sensor unit, preventing it from falling off while improving productivity by eliminating the need for primer treatment and ensuring balanced workability and holding properties.
Implementation Method 1
the housing body is vulcanization-bonded to the tire inner surface by vulcanization
Implementation Method 2
the adhesion area of the tire inner surface and the vulcanized adhesive can be increased, and the adhesiveness between the tire inner surface and the housing body can be enhanced effectively
Data Source
AI summary
A pneumatic tire includes, on a tire inner surface, at least one housing body made of rubber and configured to accommodate a sensor unit including a sensor for acquiring tire information. The housing body includes an opening portion through which the sensor unit is inserted, and is vulcanization-bonded to the tire inner surface.