Beaded Cylindrical Cam Compressor Assembly
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Solution Overview
Problem
Existing tire pressure medium supply systems face challenges in maintaining reliable and durable rotary feedthroughs, which are expensive and prone to maintenance issues due to contamination and impact-related loads near the vehicle wheel.
Innovation Solution
A compressor assembly with a compression chamber on the hub, utilizing a cam mechanism to convert rotational movement into oscillating translatory movement, eliminating the need for rotary feedthroughs by directly supplying pressure medium to the rotating tire cavity, featuring a beaded cylindrical cam and contact mechanism for interaction between wheel mount and hub-side transmission components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If rotary feedthroughs are used to supply pressure medium to rotating wheels, then pressure medium can be supplied during vehicle operation, but the operational reliability and durability of the rotary feedthroughs deteriorate due to contamination and impact-related loads
Solution Approach 1:
The invention extracts the compressor from the stationary vehicle body and relocates it to the rotating wheel hub. This eliminates the rotary feedthrough by having the compression chamber rotate with the wheel, allowing direct supply of pressurized medium to the tire cavity without requiring a rotating connection to the vehicle body.
Solution Approach 2:
The patent introduces a cam mechanism as an intermediary between the rotating hub and the stationary vehicle body. The cam converts rotational movement into oscillating translatory movement, enabling the compressor to function during rotation without requiring a direct rotary feedthrough connection.
2Reliability
If rotary feedthroughs are made robust and durable to last the vehicle service life, then reliability improves, but manufacturing cost and complexity increase greatly
Solution Approach 1:
Instead of making the rotary feedthrough robust to handle the harsh rotating environment, the invention inverts the approach by placing the compressor on the rotating hub. This eliminates the need for a complex rotary feedthrough entirely, as the compression chamber rotates with the wheel and directly supplies pressurized medium to the tire cavity.
3Ease of operation
If external pressure medium sources are used for tire inflation, then manual pressure control is possible, but maintenance requirements increase and extensive pressure checking is needed
Solution Approach 1:
The invention enables the vehicle to service itself by providing autonomous tire inflation. The compressor on the hub automatically supplies pressurized medium to the tire cavity as needed, eliminating the need for external pressure medium sources and their associated maintenance requirements.
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
Ensures reliable and low-maintenance tire inflation over the vehicle's service life, providing consistent tire pressure during operation while reducing maintenance costs and improving durability by eliminating the need for rotary feedthroughs.
Implementation Method 1
a transmission, preferably a cam mechanism, which is configured to convert a rotational movement between the wheel mount and the wheel hub into an oscillating translatory movement of the compressor component
Implementation Method 2
the volume of which can be altered by a translatory movement of a compressor component, wherein a pressure medium that is to be conducted into the tire cavity can be compressed by reducing the volume of the compression chamber
Data Source
AI summary
The invention relates to a compressor assembly for supplying pressure medium to a tire cavity of a vehicle wheel that can be mounted on a wheel hub which can be mounted on a wheel carrier so as to be rotatable about an axis of rotation. The compressor assembly includes a wheel mount-side transmission component or the hub-side transmission component, which includes a cylindrical cam.