Pneumatic Tire Pressure Sensor Rim Protector
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Solution Overview
Problem
Pneumatic tire pressure sensors are prone to damage or dislodgment during tire mounting and removal due to interference with the bead portions of the tire, which are pressure-bonded to the rim, causing separation and potential damage to the sensor.
Innovation Solution
A protector is fixed to the rim near the tire pressure sensor, comprising triangular or arc-shaped wall members that prevent direct contact with the tire bead portions, ensuring the sensor remains secure and protected during tire operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pneumatic tire pressure sensor is fixed onto the rim using an adhesive agent, then the sensor can be securely mounted for pressure detection, but the sensor becomes vulnerable to damage or dislodgment when bead portions interfere during tire mounting and removal operations
Solution Approach 1:
A protector is introduced as an intermediary component between the bead portions and the pressure sensor. The protector is fixed to the rim in the vicinity of the sensor and physically blocks the bead portions from contacting the sensor during tire mounting and removal, thereby eliminating the harmful interference while maintaining sensor security
Solution Approach 2:
The protector is pre-installed on the rim before the tire is mounted. This preliminary action ensures that when the bead portions are later pressed against the rim during mounting operations, they encounter the protector first, preventing direct contact with the sensor before the interference can occur
Data Source
AI summary
A rim (1) of a tire wheel (TW) comprises a drum (1a) and inboard and outboard tire bead sheets (1b, 1c) extending radially from both sides of the drum (1a). A bead portion (3a) of a pneumatic tire (3) is press bonded to the outboard tire bead sheet (1b). A pneumatic tire pressure sensor (2) is fixed to the rim (1). When the pneumatic tire (3) is mounted on the tire wheel (TW), or when the pneumatic tire (3) is removed from the tire wheel (TW), a protector (4) which is fixed to the rim (1) protects the pneumatic tire pressure sensor (2) such that the bead portion (3a) removed from the outboard tire bead sheet (1b) does not interfere with the pneumatic tire pressure sensor (2).