Rotary feedthrough for a vehicle wheel

摘要

A rotary feedthrough for a motor vehicle wheel having tire pressure regulation comprises a wheel carrier and a wheel hub rotatably supported on the wheel carrier. A compressed air annular space and at least one annular lubricant space, which are sealed with respect to one another, are configured in an intermediate space between the wheel carrier and the wheel hub. In this respect, the compressed air annular space communicates with a compressed air passage of the wheel carrier and with a compressed air passage of the wheel hub, wherein the compressed air passage of the wheel hub communicates with a controllable valve in order selectively to fill a tire of the motor vehicle wheel with compressed air or to deflate the tire. The annular lubricant space in turn communicates with a lubricant passage of the wheel carrier and with a lubricant passage of the wheel hub, wherein the lubricant passage of the wheel hub leads to a control port of the valve in order selectively to control the valve for the passage of compressed air.

主权项

1. A rotary feedthrough for a motor vehicle wheel having tire pressure regulation, having a wheel carrier (11) and having a wheel hub (13) rotatably supported on the wheel carrier (11),
wherein a compressed air annular space (21) and at least one annular lubricant space (22, 22), which are sealed with respect to one another, are formed in an intermediate space between the wheel carrier (11) and the wheel hub (13), wherein the compressed air annular space (21) communicates with a compressed air passage (17) of the wheel carrier (11) and with a compressed air passage (19) of the wheel hub (13), wherein the compressed air passage (19) of the wheel hub (13) furthermore communicates with a controllable valve (25) in order to selectively fill a tire of the motor vehicle wheel with compressed air or to deflate the tire, wherein the annular lubricant space (22, 22′) communicates with a lubricant passage (18) of the wheel carrier (11), and wherein the annular lubricant space (22, 22′) also communicates with a lubricant passage (20) of the wheel hub (13), which lubricant passage leads to a control port (31) of the valve (25) in order to selectively control the valve (25) for the passage of compressed air.