Fluid pump for a motor vehicle

US11174894B2 · kind B2 · utility

Assignee

• PIERBURG PUMP TECHNOLOGY GMBH · DE

Inventors

• Noriyuki Otsuka · Neuss, DE
• Michael Rombach · Neuss, DE
• Andreas Wulf · Goldkronach, DE
• Marco Limbach · Niederkassel, DE
• Tobias Muench · Neuenbürg, DE
• ANTONIO DIPACE · Goldkronach, DE

Key dates

• Filing date: Jun 1, 2018
• Grant date: Nov 16, 2021
• Expiry date: Jun 1, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2360/00
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A fluid pump for a motor vehicle includes a pump wheel which is co-rotatably connected with a driving device via a rotor shaft, and a shaft bearing system for the rotor shaft. The shaft bearing system includes a bearing receptacle having a support flange, and a first and a second ball bearing. The first and the second ball bearing are each fixed to a radial outside of the rotor shaft, are each axially shiftable within the static bearing receptacle, and are positioned at opposite axial sides of the support flange. An outer race of the first ball bearing contacts the support flange. An outer race of the second ball bearing is axially preloaded away from the support flange via a preload spring. The first and the second ball bearing are each radially supported within the static bearing receptacle only by an elastic support ring which radially surrounds the outer races.