Step-Adjustable TPMS Sensor Housing with Ratchet Mechanism
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Solution Overview
Problem
Existing tire pressure monitoring systems face challenges with the installation and reliability of electronic signal housings on vehicle rims due to size variations, heat dissipation issues, and structural instability under centrifugal forces, leading to unreliable and costly solutions.
Innovation Solution
A ratchet-adjustable tire pressure monitoring sensor signal housing assembly with a D block, U-pawl, and spring mechanism, allowing for adjustable rotation angles (5°-35°) and secure attachment using concentric arcs and ratchet teeth, compatible with various rim sizes and types of valves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the electronic signal housing is completely connected to the rim, then the housing is firmly fixed, but friction heat from high-speed rotation is transferred to the housing causing overheating of electronic elements
Solution Approach 1:
The connection between the signal housing and rim is segmented into discrete attachment points (mounting holes) rather than continuous contact. This allows heat dissipation between the housing and rim while maintaining secure fixation at specific locations.
Solution Approach 2:
The signal housing is extracted from direct thermal contact with the rim by creating a thermal break through the mounting structure. The housing is secured mechanically but thermally isolated to prevent heat transfer from the rotating rim to the electronic elements.
2Stability of the object's composition
If the electronic signal housing is fixed on the rim using steel strips, then the housing is securely attached, but the steel strips are liable to loosening and falling off with vibration
Solution Approach 1:
The mounting structure incorporates pre-designed features (mounting holes, attachment points) that enable secure fixation before vibration occurs. The structure is prepared in advance to resist vibrational forces rather than relying on components that may loosen over time.
3Ease of manufacture
If the electronic signal housing is bonded on the rim with glue, then the housing is attached, but the electronic elements may be overheated and the glue adhesion deteriorates after long operation
Solution Approach 1:
The chemical bonding method (glue) is replaced with a mechanical attachment system using mounting holes and structural fixation. This provides both secure attachment and thermal management through the mechanical connection design, avoiding the limitations of adhesive bonding under thermal and vibrational stress.
4Device complexity
If one size of electronic signal housing is molded with the tire valve, then the housing is integrated, but the housing and valve cannot be rotated and adjusted for different rim sizes
Solution Approach 1:
The mounting structure incorporates rotational adjustability, allowing the signal housing to be positioned at different angles relative to the tire valve. This dynamic adjustment capability enables the same integrated housing to fit different rim sizes and configurations while maintaining secure attachment.
Solution Approach 2:
The signal housing design incorporates universal mounting features that allow it to adapt to different rim sizes and types. The adjustable mounting mechanism enables one housing design to serve multiple applications across different vehicle types.
5Volume of moving object
If the tire valve with electronic signal housing is made larger to contain monitoring elements and batteries, then the housing can accommodate all components, but it becomes difficult to install on the tire
Solution Approach 1:
The electronic signal housing is nested within or integrated with the existing tire valve structure rather than being a separate external component. This allows the monitoring elements and batteries to be contained within a compact integrated unit that maintains the original valve dimensions and installation characteristics.
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 solution enables easy installation, secure attachment, and heat dissipation, ensuring reliable operation across different rim sizes and types, reducing product costs and improving commercial viability.
Implementation Method 1
a spring is in the bottom of the said U-pawl
Implementation Method 2
a U-pawl and a spring are installed in Slot 3 in the said connecting part, the said spring is in the bottom of the said U-pawl and the top of the said U-pawl is corresponding to the said ratchet teeth of the said D block
Data Source
AI summary
This present invention discloses a step-adjustable tire pressure monitoring sensor signal housing assembly including a valve and a valve core fixed on a rim, a sensor signal housing which consists of a housing holder and a connecting part, the connecting part has a curve connecting face where a Slot 1 is provided, and a Slot 3 is provided on the housing holder under the connecting part; a D block, which is in D shape and has a flat part and a cylinder part, a Slot 2 is provided in the center of the cylinder part perpendicular to the flat part, some ratchet teeth are provided longitudinally in the cylinder part by the side of a mounting hole; a U-pawl and a spring, which are installed in the Slot 3, the spring is in the bottom of the U-pawl and the top of the U-pawl is corresponding to the ratchet teeth on the D block; and a connector which fixes the sensor signal housing and the D block onto the tire valve through the Slot 1 in the signal housing and the Slot 2 on the D block. This present invention is applicable for all the rims of 5˜35°, and therefore is widely applicable and easy to install.