Tire Sound Absorber Mounting With Self-Powered Electronic Unit
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Solution Overview
Problem
Existing tire technologies face challenges in achieving precise sound absorption due to adhesive issues, weight increase from integrated wires for self-power generation, and durability problems with sound absorption materials, leading to inadequate noise reduction and potential separation of sound absorption materials.
Innovation Solution
A tire design featuring a wall structure with porous sponge bodies and insertion grooves for sound absorbers, combined with conductive wires for self-power generation through frictional electrification, and a polymer film sound absorber with couplers and second wires, all printed with conductive materials to reduce weight and enhance attachment stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is used to attach sound absorption material to inner liner, then sound absorption material can be fixed, but adhesive performance deteriorates due to hardening and aging
Solution Approach 1:
The patent extracts the adhesive from the attachment system and replaces it with a mechanical fixing band structure. The fixing band is vulcanized to the inner liner, creating a permanent mechanical attachment that eliminates adhesive aging and hardening issues entirely.
Solution Approach 2:
The patent replaces the chemical bonding mechanism (adhesive) with a mechanical bonding mechanism (vulcanized fixing band). This substitution eliminates the deterioration problems associated with adhesives while providing reliable long-term attachment.
2Use of energy by moving object
If wires are inserted throughout the entire sound absorption material surface for self-power generation, then electronic modules can be powered, but tire weight increases significantly
Solution Approach 1:
The patent segments the wire placement from the sound absorption material body. Instead of inserting wires throughout the entire material, wires are placed only in specific coupling regions where the sound absorption material interfaces with the fixing band, dramatically reducing wire quantity and weight.
Solution Approach 2:
The patent applies self-power generation capability only where needed - in the local regions where the sound absorption material couples with the fixing band. This localized approach provides sufficient power for electronic modules while minimizing weight increase from wires.
3Strength
If pressure is applied to adhesive-attached sound absorption material, then material should be secured, but foam absorbs pressure preventing transmission to adhesive
Solution Approach 1:
The patent extracts the sound absorption material from direct adhesive contact with the inner liner. By introducing the fixing band as an intermediate mechanical structure, pressure can be effectively transmitted through the band's rigid structure to secure the material, bypassing the pressure-absorbing foam layer.
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 effectively combines sound absorption and self-power generation while reducing weight and improving durability, enabling stable operation of electronic modules and efficient noise reduction without the drawbacks of traditional adhesive-based solutions.
Implementation Method 1
conductive wires for self-power generation through frictional electrification
Implementation Method 2
sound absorber spaced apart upward from the inner liner with both ends coupled to the wall structure and blocking sound generated by surfaces of treads and a road surface
Data Source
Figure 1~2
Figure 3~4
AI summary
The present disclosure relates to a tire with self-generation and sound absorption and, more particularly, to a tire with self-generation and sound absorption that operates an electronic module through self-power generation and has improved sound absorption performance. The tire with self-generation and sound absorption includes: a wall structure (120) formed on a surface of an inner liner (110) of the tire; a sound absorber (130) spaced apart upward from the inner liner (110) with both ends coupled to the wall structure (120) and blocking sound generated by surfaces of treads and a road surface; and an electronic unit (140) disposed on the surface of the inner liner (110) and positioned between the inner liner (110) and the sound absorber (130).