EP 4056853 A1 20220914 - PUMP DEVICE AND VEHICLE
Title (en)
PUMP DEVICE AND VEHICLE
Title (de)
PUMPVORRICHTUNG UND FAHRZEUG
Title (fr)
DISPOSITIF DE POMPE ET VÉHICULE
Publication
Application
Priority
- CN 202010913992 A 20200903
- CN 202021898979 U 20200903
- CN 2021109591 W 20210730
Abstract (en)
An embodiment of the present invention provides a pump device and vehicle, comprising: a casing, comprising a cavity; a motor portion, comprising a rotating shaft rotating around a central axis of the motor portion; a pump portion, the pump portion is arranged on an axial side of the motor portion and in contact with the rotating shaft, and can be driven by the rotating shaft to rotate; the pump portion comprises a first pressure chamber and a second pressure chamber, the pressure that the first pressure chamber bears is greater than the pressure that the second pressure chamber bears; a first bearing, connected with the casing and sleeved on the rotating shaft, the first bearing being located between the motor portion and the pump portion; a first oil groove, arranged on a first end surface of the first bearing facing the pump portion, and communicating with the first pressure chamber; and a throttle groove, provided on the first end surface, and communicating with a gap between the first oil groove and the first bearing, and the rotating shaft. The cooperation of the first oil groove and the throttle groove can not only meet the lubrication requirements between the first bearing and the rotating shaft, but also prevent the flow in the first bearing from being too large to reduce the displacement of the pump device.
IPC 8 full level
F04D 13/06 (2006.01); F01P 5/10 (2006.01); F01P 11/00 (2006.01); F04D 29/044 (2006.01); F04D 29/046 (2006.01); F04D 29/06 (2006.01); F04D 29/10 (2006.01); F04D 29/42 (2006.01); F04D 29/62 (2006.01)
CPC (source: EP)
F04B 17/03 (2013.01); F04B 53/00 (2013.01); F04B 53/18 (2013.01); F04C 2/102 (2013.01); F04C 15/0038 (2013.01); F04C 15/0046 (2013.01); F04C 15/0088 (2013.01); F01P 5/10 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 4056853 A1 20220914; EP 4056853 A4 20230628; JP 2023505546 A 20230209; JP 7350180 B2 20230925; WO 2022048364 A1 20220310
DOCDB simple family (application)
EP 21863432 A 20210730; CN 2021109591 W 20210730; JP 2022535212 A 20210730