US 11,988,205 B2
Pump-motor unit comprising an integrative housing cover
Thomas Finsterle, Ravensburg (DE); and Holger Braasch, Pfullendorf (DE)
Assigned to Schwäbische Hüttenwerke Automotive GmbH, Aalen-Wasseralfingen (DE)
Filed by Schwäbische Hüttenwerke Automotive GmbH, Aalen-Wasseralfingen (DE)
Filed on Aug. 27, 2021, as Appl. No. 17/458,814.
Claims priority of application No. 10 2020 122 867.8 (DE), filed on Sep. 1, 2020.
Prior Publication US 2022/0065249 A1, Mar. 3, 2022
Int. Cl. F04C 15/00 (2006.01); F01C 21/10 (2006.01); F04C 2/10 (2006.01); F04C 11/00 (2006.01)
CPC F04C 15/0096 (2013.01) [F01C 21/10 (2013.01); F04C 2/10 (2013.01); F04C 11/008 (2013.01); F04C 15/0034 (2013.01); F04C 2240/30 (2013.01); F04C 2240/40 (2013.01)] 25 Claims
OG exemplary drawing
 
1. An exterior pump-motor unit for delivering a liquid, the pump-motor unit comprising:
a housing comprising an integrally formed housing cover, an integrally formed intermediate housing structure and a motor cover, wherein the housing cover and the intermediate housing structure define a delivery chamber axially on both end-facing sides and circumferentially in the radial direction;
a delivery device featuring a delivery member, which can be rotated within the delivery chamber, for delivering the liquid;
and a drive motor which is connected to the delivery device via a drive shaft,
wherein
the housing cover forms an accommodating well, a delivery chamber inlet and a delivery chamber outlet, a pressure port and a suction port, and
the drive motor and the intermediate housing structure are arranged in the accommodating well, and,
wherein the intermediate housing structure comprises a cavity in the end-facing side which faces the housing cover, wherein the base of said cavity defines the delivery chamber on the end-facing side which is opposite the housing cover, and the circumferential wall of said cavity circumferentially encloses the delivery chamber,
wherein the housing cover seals off the delivery chamber on the end-facing side on a side which faces axially away from the motor cover,
wherein the delivery chamber inlet and the delivery chamber outlet are formed in the end-facing side of the housing cover which axially faces the delivery chamber, and
wherein the pressure port and the suction port are formed in the end-facing side of the housing cover which faces axially away from the delivery chamber,
wherein the suction port and the pressure port are surrounded radially by a gasket,
wherein the pump-motor unit comprises a fitting structure by means of which the pump-motor unit is connectable to a consumer and wherein the fitting structure protrudes on a radially outer side, from the housing cover,
wherein the fitting structure comprises passages through which fastening elements can protrude in order to form a holding engagement with bores or cavities provided on the consumer, and
wherein the passages extend in the axial direction and when the pump-motor unit is connected to the consumer by means of the fastening elements, the pump-motor unit is pressed into sealing contact with the consumer.