Mechanically driven tire pressure generation means

Patent metadata

Field	Value
Publication number	US-10442258-B2
Application number	US-201715724523-A
Country	US
Kind code	B2
Filing date	Oct 4, 2017
Priority date	Oct 11, 2016
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A wheel hub arrangement having a wheel hub for mounting a rim with an inflated tire. The wheel hub arrangement has a rotary piston compressor mounted rotatably on the wheel hub. The wheel hub arrangement has a switchable mechanical coupling device, by way of which the rotary piston compressor can be switched over between a compression mode, in which the rotary piston compressor can be actuated by way of a rotational movement relative to the mounted rim or the wheel hub, and a rest mode, in which it is passive and does not produce any compressed air on the outlet side, and the rotary piston compressor producing compressed air on the outlet side for filling the tire in the compression mode.

First claim

What is claimed is:

1. A wheel hub arrangement having a wheel hub for mounting a rim of the wheel hub arrangement with an inflatable tire, the wheel hub arrangement comprising:
a rotary piston compressor that is mounted rotatably on the wheel hub,
the rotary piston compressor being configured to be switched over between a compression mode, in which the rotary piston compressor is configured to be actuated by way of a rotational movement relative to the mounted rim or the wheel hub, and a rest mode, in which the rotary piston compressor is passive and does not produce any compressed air, and

wherein the rotary piston compressor produces compressed air for filling the tire in the compression mode,
wherein the wheel hub arrangement has a tire sealant reservoir which is arranged and configured in such a way that a tire sealant can be fed into the compressed air which is produced by the rotary piston compressor.

2. The wheel hub arrangement as claimed in claim 1 , wherein the rotary piston compressor is configured as a Wankel piston.

3. The wheel huh arrangement as claimed in claim 1 , wherein the wheel hub arrangement has a compressed air store which is configured to be filled by the rotary piston compressor.

4. A wheel arrangement comprising:
a wheel hub having a rotary piston compressor;
a rim with an inflatable tire that is mounted to the wheel hub;
wherein the wheel hub has a hollow spoke which is configured as a compressed air connection between the rotary piston compressor and the rim of the wheel arrangement, wherein the rotary piston compressor is positioned outside of the hollow spoke.

5. The wheel arrangement as claimed in claim 4 , wherein a compressed air store, which is configured to be filled by the rotary piston compressor, is arranged in at least one spoke of the wheel arrangement.

6. A vehicle having a plurality of the wheel hub arrangements as claimed in claim 1 .

7. The vehicle as claimed in claim 6 , wherein the vehicle has a common compressed air store which is configured to be filled by way of each rotary piston compressor of the wheel hub arrangements.

8. The vehicle as claimed in claim 6 , wherein the vehicle has a control device for actuating the wheel hub arrangements.

9. The wheel hub arrangement as claimed in claim 1 , further comprising a valve for discharging air from the tire.

Assignees

• Porsche Ag

Inventors

• Glatz Michael

Classifications

• B60C23/10 Primary

  Arrangement of tyre-inflating pumps mounted on vehicles · CPC title

• B60C23/003

  comprising rotational joints between vehicle-mounted pressure sources and the tyres · CPC title

• B60C23/12

  operated by a running wheel · CPC title

• B60C23/127 Primary

  the pumps being mounted on the hubs · CPC title

• B60C23/00318

  on the wheels or the hubs · CPC title