Compressor Assembly With Magnetic Coupling For Tire Pressure
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Solution Overview
Problem
Existing tire pressure medium supply systems face challenges in maintaining reliable and low-maintenance operation over the service life of a vehicle, with external pressure sources requiring frequent checking and correction, and on-board systems having safety issues with rotary feedthroughs that are costly and uneconomical to manufacture.
Innovation Solution
A compressor assembly with a hub-side compression chamber and a compressor component that uses oscillating translational motion, converted from rotational motion via a cam transmission, to pressurize the tire cavity, featuring a magnet-based decoupling device and a pneumatic spring mechanism for efficient operation and maintenance reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If external pressure medium sources are used to fill tire cavities, then tire pressure can be checked and corrected manually, but the process is time-consuming and requires frequent maintenance
Solution Approach 1:
The system enables autonomous tire pressure management by integrating a compressor assembly with the vehicle's existing pressure medium supply system. The compressor automatically fills tire cavities when pressure drops, eliminating the need for manual intervention and time-consuming checking/correction processes.
Solution Approach 2:
The compressor assembly proactively maintains tire pressure by detecting pressure drops and automatically replenishing pressure before it becomes critical. This preliminary action prevents the need for reactive manual intervention and keeps tires continuously at optimal pressure levels.
2Extent of automation
If on-board pressure medium sources with rotary feedthroughs are used, then autonomous tire filling is enabled, but operating safety is compromised and manufacturing costs increase
Solution Approach 1:
The invention removes the rotary feedthrough component from the pressure medium supply path. Instead of using rotary feedthroughs to convey pressure medium to rotating wheels, the system uses a compressor assembly that integrates directly with the wheel hub, eliminating the safety-critical rotary connection while maintaining autonomous filling capability.
Solution Approach 2:
The compressor assembly acts as an intermediary between the vehicle's pressure medium storage and the tire cavities. It provides a safe, stationary interface for pressure medium transfer, replacing the unsafe rotary feedthrough mechanism while enabling continuous autonomous operation.
3Duration of action of stationary object
If robust rotary feedthroughs are manufactured to ensure durability, then service life is extended, but manufacturing effort and costs increase significantly
Solution Approach 1:
By removing the rotary feedthrough from the system architecture, the invention eliminates the need for expensive, complex manufacturing processes required to create durable rotary connections. The simplified compressor assembly design reduces manufacturing effort and cost while achieving comparable or superior service life.
Solution Approach 2:
The system is segmented into stationary components (compressor assembly, pressure medium storage) and rotating components (wheel hub), with the compressor providing pressure medium through a stationary interface. This segmentation eliminates the need for complex rotary connections, reducing manufacturing complexity and cost.
4Reliability
If a compressor assembly with cam transmission is used to convert rotational motion to oscillating translational motion, then reliable tire pressure supply is achieved, but device complexity increases
Solution Approach 1:
The compressor assembly uses a cam transmission mechanism that converts the rotational motion from the wheel hub into oscillating translational motion of the compressor component. This dynamic motion conversion enables reliable compression and delivery of pressure medium to the tire cavity, ensuring consistent tire pressure supply.
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 compressor assembly ensures reliable and low-maintenance tire pressure medium supply by converting rotational motion into oscillating translational motion, enhancing durability and reducing maintenance costs through efficient operation and robust design.
Implementation Method 1
a magnet-based decoupling device, via which the hub-side transmission part can be held out of the operating position with the wheel carrier side transmission part and/or can be brought out of the operating position with the wheel carrier side transmission part
Implementation Method 2
a transmission, preferably a cam transmission, which is designed to convert a rotational motion between the wheel carrier side and the wheel hub side into an oscillating translational motion of the compressor component
Data Source
AI summary
A compressor assembly (10) for supplying pressure medium to a tire cavity (7) of a tire of a vehicle wheel, which can be mounted on a wheel hub (4) that is mounted on a wheel carrier (3) for rotation about an axis of rotation (32). The compressor assembly (10) includes a hub-side compression chamber (16) and a compressor component (18). A pressure medium is conducted into the tire cavity (7) upon being pressurized in the compression chamber (16) by oscillating translational motion of the compressor component (18). The compressor assembly (10) includes a transmission (20) that converts a rotational motion between the wheel carrier side and the wheel hub side into an oscillating translational motion of the compressor component (18) when a hub-side transmission part (24) is in an operating position with a wheel-carrier-side transmission part (26).