Electronic Module Mechanical Fixing for Tire Wire Stress
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Solution Overview
Problem
Existing electronic modules integrated into vehicle tires face challenges in achieving a reliable mechanical and electrical connection with wires due to the sensitivity of the junction to stresses caused by tire deformations, with soldering and crimping methods failing to provide a robust and consistent connection.
Innovation Solution
An electronic module with separate mechanical and electrical connection members, where the mechanical fixing member absorbs forces and includes crimping, snap-fastening, or gluing means, and a protective casing to distribute stresses and prevent solder rise, ensuring a robust and reliable connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wire is connected to the electrical connection member by soldering, then a reliable electrical connection is achieved, but the joint is not robust enough to withstand repeated mechanical stresses from tire deformations
Solution Approach 1:
The connection system is divided into two separate members: an electrical connection member for soldering and a mechanical fixing member for crimping. This segmentation allows each component to be optimized for its specific function, with the mechanical fixing member absorbing stresses and protecting the soldered electrical connection from mechanical loads.
Solution Approach 2:
The mechanical fixing member acts as an intermediary between the wire and the electrical connection member. It provides mechanical support and stress absorption, shielding the delicate soldered joint from direct mechanical stresses while allowing the electrical connection to function reliably.
2Strength
If the wire is connected to the electrical connection member by crimping, then good mechanical fixing is achieved, but a reliable electrical connection is not ensured
Solution Approach 1:
The connection system is divided into two separate members: an electrical connection member for soldering and a mechanical fixing member for crimping. This segmentation allows each component to be optimized for its specific function, with the mechanical fixing member providing robust mechanical attachment and the electrical connection member ensuring reliable electrical contact.
Solution Approach 2:
The patent combines two connection methods (soldering and crimping) into a single integrated solution where both techniques are applied to the same wire connection point. The mechanical fixing member and electrical connection member work together to provide both mechanical strength and electrical reliability simultaneously.
3Stability of the object's composition
If the wire is embedded in rubbery material to reduce wire deformation, then wire flexibility is maintained, but the complexity of the module increases
Solution Approach 1:
The patent extracts the wire protection function from the rubbery material embedding approach and implements it through a dedicated mechanical fixing member with crimping capability. This separate component provides wire deformation resistance without requiring the wire to be embedded in rubbery material, thereby reducing overall module complexity.
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 provides a reliable electrical and mechanical connection that withstands tire deformation stresses, maintaining the flexibility of the wire and ensuring a durable weld, while the protective casing distributes forces and minimizes disturbances.
Implementation Method 1
the mechanical fixing member of the wire comprises crimping means. The crimping means indeed allow rapid and effective mechanical fastening
Implementation Method 2
the solder tends to rise between these strands by capillarity and thus to stiffen the assembly
Implementation Method 3
The mechanical fixing member of the wire then prevents this rise of solder, which allows the wire to retain its full flexibility potential
Implementation Method 4
the member for mechanical fixing of the wire comprises snap-fastening means
Implementation Method 5
the member for mechanical fixing of the wire comprises gluing means
Data Source
Figure 1~4
AI summary
The module (14) has a functional part (20) e.g. temperature transducer, carried by a support (18). The support has electric connection parts (22a, 22b) electrically connecting wires (16a, 16b) with the functional part and constituted of electrically conductive bands. The wires respectively have sections (26a, 26b) connected to the module and free sections (28a, 28b). The support has crimping rings (24a, 24b) distinct from the electric connection parts and mechanically fixing the wires with the support. The rings are positioned on a passage in upstream of the electric connection parts. An independent claim is also included for a method of obtaining an electronic device integrated to a tire.