Gasket and method for producing a gasket

Patent metadata

Field	Value
Publication number	US-12379028-B2
Application number	US-202318327790-A
Country	US
Kind code	B2
Filing date	Jun 1, 2023
Priority date	Jun 2, 2022
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

Gaskets and methods for manufacturing a gasket for sealing a gap in a housing, such as a battery housing, which gap extends at least partially around an interior of the housing, said gasket comprising at least one sealing layer. The sealing layer comprises at least two segments which are arranged adjacent to each other in the longitudinal direction of the sealing layer and are joined to each other at a joining region. The two segments have, at the joining region, intermeshing engagement elements joined to each other, and one or both of the segments has/have, at the joining region a positioning hole and a through-opening which are arranged behind the engagement element from the point of view of the respective other segment.

First claim

The invention claimed is:

1. A press-fit stemmed metal gasket for sealing a gap extending at least partially around an interior of a housing, said press-fit stemmed metal gasket comprising at least one sealing layer,
wherein the sealing layer comprises at least two segments which are arranged adjacent to each other in the longitudinal direction of the sealing layer and are joined to each other at a joining region,
wherein the two segments have, at the joining region, intermeshing engagement elements joined to each other,
wherein at least one segment of the two segments has, at the joining region, a positioning hole and a through-opening which are arranged behind the engagement element from the point of view of a respective other segment, wherein the through-opening is a fixing point for a stamping element, and wherein the sealing layer has a reduced thickness along a circumferential edge of the through-opening,
wherein the segment comprises a first surface and a second surface, the second surface parallel to the first surface and positioned around the circumferential edge of the through-opening, the first surface connected to the second surface via a first contour or corner and a second, opposite contour or corner, and
wherein the circumferential edge of the through-opening has a first diameter at the second surface and a second diameter at a center of a thickness of the segment, the second diameter greater than the first diameter.

2. The press-fit stemmed metal gasket according to claim 1 , wherein the positioning hole is arranged in front of or behind the through-opening from the point of view of the adjacent segment.

3. The press-fit stemmed metal gasket according to claim 1 , wherein the two segments are compressed together at the joining region.

4. The press-fit stemmed metal gasket according to claim 1 , wherein an edge of one engagement element of one segment has a recess and an edge of another adjacent engagement element has a protrusion complementary to the recess.

5. The press-fit stemmed metal gasket according to claim 1 , wherein the engagement elements form a dovetail-type joint.

6. The press-fit stemmed metal gasket according to claim 1 , wherein a segment having a dovetail-type protrusion is compressed in a first compression region at a head end and/or at flanks of the dovetail-type protrusion, and/or a segment having a dovetail-type recess is compressed in second compression regions on both sides of a transition from the dovetail-type protrusion into a corresponding segment.

7. The press-fit stemmed metal gasket according to claim 1 , wherein a centroid of the first compression region and centroids of the second compression regions are arranged at a distance of at least 1 mm from each other in the longitudinal direction of the press-fit stemmed metal gasket.

8. The press-fit stemmed metal gasket according to claim 1 , wherein the reduced thickness along the circumferential edge of the through-opening contains material displaced from the segment.

9. The press-fit stemmed metal gasket according to claim 1 , wherein the intermeshing engagement elements comprise a dovetail-type protrusion having a first thickness at an outer edge of the dovetail-type protrusion and a second thickness at an inner region, the second thickness smaller than the first thickness.

10. The press-fit stemmed metal gasket according to claim 1 , wherein the through-opening and the axis of symmetry of the joining region are aligned along a midline of the press-fit stemmed metal gasket.

11. The press-fit stemmed metal gasket according to claim 1 , wherein the segment further comprises a third surface opposite the first surface, and a fourth surface opposite the second surface, the fourth surface parallel to the third surface and positioned around the circumferential edge of the through-opening, the third surface connected to the fourth surface via a third contour and a fourth, opposite contour, and wherein the circumferential edge of the through-opening has the first diameter at the fourth surface.

12. A method of manufacturing a press-fit stemmed metal gasket according to claim 1 , wherein the two segments are compressed together in the region of the joining region by compressing at least one segment with the stamping element.

13. The method according to claim 12 , wherein the areas around the through-openings are fixed from at least one side along the circumferential edge of the through-opening.

14. The method according to claim 12 , wherein the segments may be placed into an injection-molding die, and the two segments may be press-fit stemmed together by the injection-molding die, and an elastomer may be injected onto at least parts of the edge regions of the press-fit stemmed metal gasket.

Assignees

• Reinz Dichtungs Gmbh

Inventors

• Erthle Steffen
• Waldvogel Johann

Classifications

• F16J15/128

  with metal covering · CPC title

• F16J15/067 Primary

  Split packings · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• B29C45/14221

  by tools, e.g. cutting means · CPC title

• B21D39/037

  Interlocking butt joints · CPC title