Self-Inflating Tire Mechanism Using Rotation-Driven Air Compression
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Solution Overview
Problem
Tires gradually lose air over time, leading to flat tires, which can cause damage to the tire, vehicle, and its occupants. Manual refilling of air is time-consuming and may not be possible without special equipment.
Innovation Solution
A tire inflation apparatus embedded inside a tire, comprising a piston with one or more chambers, a spring, and a bladder. The apparatus compresses air to fill the tire as it deforms from insufficient air pressure while rotating over a surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual refilling of air is used, then tire pressure can be restored, but it is time-consuming and requires special equipment
Solution Approach 1:
The tire inflation apparatus enables the tire to self-inflate by utilizing the tire's own deformation during rotation. The bladder compresses when the tire deforms from insufficient pressure, and this compression drives the piston to force air back into the tire, eliminating the need for external equipment or manual intervention.
Solution Approach 2:
The system converts the static problem of low tire pressure into a dynamic solution by utilizing the tire's natural deformation during rotation. The bladder and piston mechanism responds dynamically to the tire's deformation cycle, automatically injecting air when needed without requiring external power sources or control systems.
2Reliability
If manual refilling of air is used, then tire pressure can be restored, but it may not be possible without special equipment on hand
Solution Approach 1:
The apparatus is embedded within the tire itself, making the tire self-sufficient for pressure maintenance. The system uses the tire's own mechanical deformation to drive the inflation process, requiring no external equipment, power sources, or manual operation.
Solution Approach 2:
The bladder acts as an intermediary element that transfers mechanical energy from the tire deformation to the piston mechanism. This intermediary converts the tire's deformation into pneumatic pressure that forces air into the tire, enabling automatic inflation without external intervention.
3Reliability
If the bladder compresses to force air into the tire, then tire pressure is restored, but the spring must be compressed which requires force
Solution Approach 1:
The system dynamically utilizes the tire's deformation force during rotation to compress the spring and drive the piston. The force required to compress the spring is provided by the tire's own deformation when it loses pressure, converting the pressure loss into the mechanical energy needed for inflation.
Solution Approach 2:
The tire's deformation from insufficient pressure, which is harmful to vehicle safety and performance, is converted into a beneficial force that compresses the bladder and drives the piston to restore pressure. The harmful deformation becomes the driving force for the inflation mechanism.
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 apparatus automatically maintains optimal tire pressure by forcing air into the tire when pressure drops, ensuring continuous inflation and preventing tire damage.
Implementation Method 1
a spring disposed within the housing between a first end of the piston and a first end of the housing, wherein the spring may be configured to urge the piston towards a second end of the housing
Implementation Method 2
The compressed air in the bladder chamber may force the piston towards a first end of the housing, thereby allowing air to flow from the bladder chamber into a tire chamber
Data Source
AI summary
Apparatus and methods for tire inflation using an apparatus. The apparatus contains a piston in a housing and a bladder attached at an end of the housing. The apparatus is configured to compress air between a cap, the housing, and piston from the bladder compressing. Air enters into the tire through a valve in the piston. When the bladder decompresses, the piston seals air in the tire, thereby enabling air to pass through the valve in the cap. The apparatus involves a method of maintaining air pressure in a tire. The method includes the apparatus for inflating the tire as the tire rotates over a surface.