Housing

Patent metadata

Field	Value
Publication number	US-11363730-B2
Application number	US-202017033626-A
Country	US
Kind code	B2
Filing date	Sep 25, 2020
Priority date	Sep 26, 2019
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

A housing for accommodating electrical components, in particular in a liquid pump, includes a housing pot including a bottom and a surrounding wall protruding from the bottom, as well as a housing cover closing the housing pot, including a shoulder protruding in the direction of the bottom. A simplified and cost-efficient production of the housing as well as an increased operational safety of the liquid pump are attained in that the housing cover forms a caulking connection with the surrounding wall of the housing pot with the help of at least one recess formed in the shoulder. The disclosure furthermore relates to a liquid pump including a housing of this type as well as a method for producing a liquid pump of this type.

First claim

What is claimed is:

1. A housing for accommodating electrical components in a liquid pump, the housing comprising:
a housing pot and a housing cover, which closes the housing pot, wherein:
the housing pot has a bottom and a circumferential surrounding wall, which protrudes from the bottom, which surround an internal volume of the housing pot,
the surrounding wall has a connecting portion,
on the side facing away from the internal volume, the connecting portion has a support surface, which runs in the direction of the bottom, and a support step, which follows the support surface in the direction of the bottom and runs in the direction of the internal volume,
the housing cover has a shoulder, which protrudes in the direction of the bottom and which is arranged on the side of the connecting portion facing away from the internal volume,
the shoulder projects beyond the support surface in the direction of the bottom,
the shoulder has a recess associated with the support step,
on its side facing the bottom, the recess is defined by a lower portion, and, on its side facing away from the bottom, by an upper portion of the shoulder,
the upper portion is arranged on the side of the support surface facing away from the internal volume,
the lower portion is deformed in the direction of the internal volume, and is arranged on the side of the support step facing the bottom in such a way that the shoulder forms a caulking connection with the connecting portion.

2. The housing according to claim 1 , wherein the connecting portion is arranged on the front side of the surrounding wall.

3. The housing according to claim 2 , wherein:
the connecting portion has a sealing groove, which is open on the side facing away from the bottom,
a seal is accommodated in the sealing groove,
the housing cover acts upon the seal in a sealing manner in the sealing groove.

4. The housing according to claim 1 , wherein the lower portion has a nose, which projects into the recess and which is deformed with the lower portion and which is arranged on the side of the support step facing the bottom.

5. The housing according to claim 1 , wherein, on the outer side in the direction of the bottom, the shoulder has an outer edge, which has the lower portion.

6. The housing according to claim 1 , wherein the surrounding wall has a groove step, which is located opposite the support step in the direction of the bottom and which, with the support step, forms an open connecting groove, which faces away from the internal volume and in which the lower portion is deformed.

7. The housing according to claim 1 , wherein the support surface has a protrusion protruding in the direction of the shoulder.

8. The housing according to claim 1 , wherein:
the housing cover has a base portion, from which the shoulder protrudes,
the shoulder is made of a metal or of a metal alloy, and the base portion is made of plastic,
the shoulder is injection molded by the base portion.

9. The housing according to claim 1 , wherein at least two caulking connections are provided, which are circumferentially spaced apart from one another, and wherein the respective caulking connection has an associated recess of the shoulder.

10. A liquid pump, in particular water pump, comprising:
the housing according to claim 1 , and
at least one electrical component, which is accommodated in the housing.

11. A method for producing a liquid pump according to claim 10 , the method comprising:
providing the housing comprising the housing pot and the housing cover;
arranging at least one electrical component in the internal volume of the housing;
closing the housing pot with the housing cover; and
caulking the lower portion in the direction of the internal volume to establish the caulking connection.

12. The method according to claim 11 , wherein:
a plunger is provided, which has an L-shaped outer contour comprising a support leg and a caulking leg protruding from the support leg,
the support leg is arranged on the side of the upper portion facing away from the support surface in such a way that the caulking leg is arranged on the side of the lower portion facing away from the internal volume, spaced apart from the upper portion, and
the plunger is moved in the direction of the internal volume in such a way that the lower portion is deformed in the direction of the internal volume and is arranged on the side of the support step facing the bottom.

Assignees

• Mahle Int Gmbh

Inventors

• Diekmann Johannes
• Drefs Robin
• Friedrich Sven B
• Makarow Eugen
• Rul Andrej
• Van Delden Jeffrey
• Weimann Benjamin

Classifications

• H05K5/10 Primary

  comprising several parts forming a closed casing · CPC title

• H05K5/03

  Covers · CPC title

• H05K5/061 Primary

  sealed by a gasket held between a removable cover and a body, e.g. O-ring, packing · CPC title

• H05K5/0221

  Locks; Latches · CPC title

• F04D29/605

  specially adapted for liquid pumps · CPC title