Fluid pump

Patent metadata

Field	Value
Publication number	US-12044236-B2
Application number	US-202017093827-A
Country	US
Kind code	B2
Filing date	Nov 10, 2020
Priority date	Nov 14, 2019
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

A fluid pump, in particular an oil pump, for supplying a clutch actuator, a gearbox actuator, a lubrication system, and/or a cooling system of a drive train, includes a pump unit, an electrical drive unit, and a one-piece sealing element. The pump unit is arranged in a first housing part of the fluid pump, and the electrical drive unit is arranged in a second housing part of the fluid pump. The one-piece sealing element seals the first housing part against the second housing part, and seals the first housing part against a housing cover arranged on a side opposite the second housing part. Furthermore, a method for producing such a fluid pump includes arranging a pump unit in a first housing part of the fluid pump and moulding a sealing element onto the first housing part.

First claim

The invention claimed is:

1. A fluid pump for supplying a fluid to at least one of a clutch actuator, a gearbox actuator, a lubrication system, and a cooling system of a drive train, comprising:
a pump unit;
an electrical drive unit; and
a one-piece sealing element, wherein
the pump unit is an annular gear pump and is arranged in a first housing part of the fluid pump,
the electrical drive unit is arranged in a second housing part of the fluid pump which is separate from the first housing part,
the one-piece sealing element seals the first housing part against the second housing part and seals the first housing part against a housing cover arranged on a side opposite the second housing part,
the one-piece sealing element has a first annular sealing portion, which is positioned between the first housing part and the second housing part and seals the first housing part against the second housing part,
the one-piece sealing element has a second annular sealing portion, which is separate from the first annular sealing portion, is positioned between the first housing part and the housing cover, and seals the first housing part against the housing cover, and
the first annular sealing portion and the second annular sealing portion are connected together via several connecting portions.

2. The fluid pump according to claim 1 , comprising:
at least one of a fluid inlet and a fluid outlet of the fluid pump provided on the housing cover.

3. The fluid pump according to claim 1 , wherein
the first annular sealing portion and the second annular sealing portion run substantially parallel to one another.

4. The fluid pump according to claim 3 , wherein
the connecting portions extend substantially perpendicularly to sealing planes defined by the first annular sealing portion and the second annular sealing portion.

5. The fluid pump according to claim 4 , wherein a distance between the first annular sealing portion and the second annular sealing portion is equal to a length of each of the connecting portions.

6. The fluid pump according to claim 1 , wherein
the one-piece sealing element has at least one sealing lip pointing in a direction of the second housing part.

7. The fluid pump according to claim 1 , wherein
the one-piece sealing element has at least one sealing lip pointing in a direction of the housing cover.

8. The fluid pump according to claim 1 , wherein at least
the one-piece sealing element is made of an elastic mixture, and
the one-piece sealing element is injection-moulded into a space on the first housing part.

9. The fluid pump according to claim 1 , wherein the fluid pump is an oil pump.

10. The fluid pump according to claim 1 , wherein
the one-piece sealing element has two sealing lips pointing in a direction of the second housing part.

11. The fluid pump according to claim 1 , wherein
the one-piece sealing element has two sealing lips pointing in a direction of the housing cover.

12. The fluid pump according to claim 1 , wherein at least one of:
the one-piece sealing element is made of a rubber mixture, and
the one-piece sealing element is injection-moulded into a space on the first housing part.

13. The fluid pump according to claim 1 , wherein at least one of:
the one-piece sealing element is made of a fluorocarbon rubber, and
the one-piece sealing element is injection-moulded into a space on the first housing part.

14. The fluid pump according to claim 1 , wherein the first housing part is mounted separately on the second housing part.

15. The fluid pump according to claim 1 , wherein the first annular sealing portion is positioned between the first housing part and the second housing part and configured to separate the first housing part and the second housing part.

16. The fluid pump according to claim 1 , wherein the connecting, portions are not evenly distributed.

Assignees

• Fte Automotive Gmbh

Inventors

• Dirauf Markus
• Merkle Manuel
• Neubauer Sebastian
• Lawatsch Dominik
• Pohl Thomas
• Ostrohov Dimitri

Classifications

• F05C2225/02

  Rubber · CPC title

• F04D29/406

  especially adapted for liquid pumps · CPC title

• F04D29/086

  especially adapted for liquid pumps · CPC title

• F04B53/22

  Arrangements for enabling ready assembly or disassembly · CPC title

• F04B53/16 Primary

  Casings; Cylinders; Cylinder liners or heads; Fluid connections · CPC title