Cylinder head cover

Patent metadata

Field	Value
Publication number	US-10550795-B2
Application number	US-201615370716-A
Country	US
Kind code	B2
Filing date	Dec 6, 2016
Priority date	Dec 7, 2015
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

Abstract

A cylinder head cover and a method for producing a cylinder head cover are disclosed. The method for producing a cylinder head cover may include: providing at least two metallic bearing bridges including a respective through-opening for mounting at least one camshaft and aligning the respective through-opening of the at least two bearing bridges axially relative to one another; connecting at least one metallic connection element to the at least two bearing bridges in a fixed manner so that the at least two bearing bridges are fixed and aligned relative to one another; and at least partially overmoulding the at least two bearing bridges and the at least one connection element with a plastic material.

First claim

The invention claimed is:

1. A method for producing a cylinder head cover, comprising:
providing at least two metallic bearing bridges including a respective through-opening for mounting at least one camshaft and aligning the respective through-opening of the at least two bearing bridges axially relative to one another, the at least two bearing bridges respectively including at least two mounting openings disposed on radially opposite sides of the respective through-opening via which the at least two bearing bridges are couplable to a cylinder head, and at least two outer side surfaces respectively disposed radially outside each of the at least two mounting openings relative to the respective through-opening;
connecting at least one metallic connection element to the at least two bearing bridges in a fixed manner so that the at least two bearing bridges are fixed and aligned relative to one another; and
at least partially overmoulding the at least two bearing bridges and the at least one connection element with a plastic material;
wherein connecting the at least one connection element to the at least two bearing bridges includes coupling a plurality of rail-like connection elements in a parallel arrangement respectively to a corresponding one of the at least two outer side surfaces of each of the at least two bearing bridges; and
wherein at least partially overmoulding the at least two bearing bridges and the at least one connection element with the plastic material includes completely surrounding the at least two bearing bridges with the plastic material radially and axially relative to an axis of the respective through-opening such that an outside surface of the at least two bearing bridges is completely covered with the plastic material.

2. The method according to claim 1 , wherein connecting the at least one connection element to the at least two bearing bridges includes at least one of welding, soldering, screwing, riveting, gluing, pinning and form-fitting the at least one connection element and the at least two bearing bridges together.

3. The method according to claim 1 , further comprising forming at least one opening in the at least one connection element.

4. The method according to claim 1 , wherein at least partially overmoulding the at least two bearing bridges and the at least one connection element with the plastic material includes forming a sealing surface via the plastic material on the at least two bearing bridges for engaging a cylinder head.

5. The method according to claim 1 , wherein connecting the at least one connection element to the at least two bearing bridges includes disposing the plurality of rail-like connection elements and a plurality of transverse webs on the at least two bearing bridges to form a lattice-like structure.

6. The method according to claim 1 , wherein connecting the at least one connection element to the at least two bearing bridges includes at least partially encasing a back of the at least two bearing bridges with the at least one connection element such that at least two surfaces of the at least one connection element are angled with respect to one another.

7. The method according to claim 1 , wherein connecting the at least one connection element to the at least two bearing bridges includes fixing a plate-like structure to a back of the at least two bearing bridges.

8. The method according to claim 1 , wherein at least partially overmoulding the at least two bearing bridges and the at least one connection element with the plastic material includes injection moulding the at least one connection element together with the at least two bearing bridges in a plastic injection mould such that a plastic overmould covers a back of each of the at least two bearing bridges and forms a sealing contour on a side of the at least two bearing bridges opposite the back.

9. The method according to claim 1 , wherein a longitudinal extent of the plurality of rail-like connection elements are arranged axially to the respective through-opening of the at least two bearing bridges and the plurality of rail-like connection elements are arranged spaced apart transversely from one another.

10. The method according to claim 1 , wherein connecting the at least one connection element to the at least two bearing bridges further includes coupling at least one of the plurality of rail-like connection elements to a back surface extending transversely to the at least two outer side surfaces of each of the at least two bearing bridges.

11. The method according to claim 1 , wherein:
the at least two bearing bridges each include another respective through-opening which, together with the respective through-opening, define two through-openings disposed axially parallel and adjacent to one another between the at least two mounting openings; and
connecting the at least one connection element to the at least two bearing bridges further includes coupling at least one of the plurality of rail-like connection elements to a back surface of the at least two bearing bridges extending transversely between the two through-openings.

12. A cylinder head cover, comprising:
at least two metallic bearing bridges having a respective receiving opening for mounting a camshaft, the at least two bearing bridges arranged axially aligned to one another with respect to the respective receiving opening;
at least one metallic connection element including a plurality of rail-like connection elements arranged spaced apart transversely from one another and each having a longitudinal extent arranged axially to the respective receiving opening of the at least two bearing bridges, the plurality of rail-like connection elements connected to the at least two bearing bridges and fixedly connecting the at least two bearing bridges together; and
a plastic overmould at least partially covering the at least two bearing bridges and the at least one connection element, wherein the plastic overmould completely surrounds the at least two bearing bridges radially and axially relative to an axis of the respective receiving opening such that an outside surface of the at least two bearing bridges is completely covered by the plastic overmould;
wherein the at least two bearing bridges respectively include at least two mounting openings disposed on radially opposite sides of the respective receiving opening via which the at least two bearing bridges are couplable to a cylinder head, and at least two outer side surfaces respectively disposed radially outside each of the at least two mounting openings relative to the respective receiving opening; and
wherein the plurality of rail-like connection elements are respectively arranged on and coupled to a corresponding one of the at least two outer side surfaces of each of the at least two bearing bridges in a parallel arrangement.

13. The cylinder head cover according to claim 12 , wherein the plurality of rail-like connection elements respectively have a plate-like structure, and wherein at least one of the plurality of rail-like connection elements is connected to a back of the at least two bearing bridges disposed between the at least two outer side surfaces.

14. The cylinder head cover according to claim 12 , wherein the at least one connection element has a lattice-like structure including the plurality of rail-like connection elements and a plurality of transverse webs.

15. The cylinder head cover according to claim 12 , wherein a surface of the plastic overmould defines at least one sealing contour.

16. The cylinder head cover according to claim 12 , wherein the at least one connectio

Assignees

• Mahle Int Gmbh

Inventors

• Cutrona Roberto
• Flender Thomas
• Kreisig Michael

Classifications

• F01L2303/00

  Manufacturing of components used in valve arrangements · CPC title

• F01L2301/00

  Using particular materials · CPC title

• F01L2001/0476

  Camshaft bearings · CPC title

• F01L1/053

  overhead type · CPC title

• F01L1/02

  Valve drive (transmitting-gear between valve drive and valve F01L1/12) · CPC title