Explosion-proof housing

Patent metadata

Field	Value
Publication number	US-12407149-B2
Application number	US-202017778342-A
Country	US
Kind code	B2
Filing date	Nov 6, 2020
Priority date	Nov 19, 2019
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

An explosion-proof housing, which forms an interior for accommodating components that can form ignition sources. The housing has a first housing part with a first section which has a first face, and a second housing part with a second section which has a second face, the first section and/or the second section being a section of a wall, the first face and the second face delimiting an intermediate region. The first section and the second section are pressed against each other with elastic deformation of the wall section so that the intermediate region is geometrically closed in a flameproof manner by the elastic deformation of the wall section. The invention also relates to a method for producing an explosion-proof connection between a first section of a first housing part with a first face and a second section of a second housing part with a second face of a housing, at least one of the sections being a section of a wall. The invention also relates to a further method for producing an explosion-proof connection between a first section of a first housing part with a first face and a second section of a second housing part with a second face of a housing, at least one of the sections being a section of a wall.

First claim

The invention claimed is:

1. An explosion-proof housing that forms an interior for location of components that can form ignition sources, the explosion-proof housing having a first housing part with a flange section that comprises a first face and a second housing part with a second section that comprises a second face, wherein the flange section and/or the second section is a wall section, and the first face has a first configuration and the second face has a second configuration that is different from the first configuration, such that the first configuration and the second configuration define an intermediate region therebetween when the first configuration and the second configuration are adjacent to each other, and wherein the flange section and the second section are pressed against one another after elastic deformation of the wall section, such that the intermediate region is geometrically closed in a flameproof manner due to the elastic deformation of the wall section, wherein the explosion-proof housing is configured according to an explosion protection category of flame-proof enclosure as defined by the standard (DIN EN 600-79/1) and the interior of the explosion-proof housing is configured to arrange electrical or electronic components therein that could form ignition sources; wherein the flange section is a sheet and/or the second section is a sheet section; wherein a sheet thickness of the flange section and/or the second section is no greater than a maximum of 5 mm.

2. The explosion-proof housing according to claim 1 , wherein the flange section is part of the first housing part and the second section is part of the second housing part, wherein the flange section and the second section confine an angle in case of abutment of the first housing part on the second housing part in a non-clamped condition due to a geometric desired shape of the flange section and the second section.

3. The explosion-proof housing according to claim 1 , wherein in abutment of the first housing part and the second housing part against one another in a non-clamped condition a width of the intermediate region increases from a support region in direction toward an environment of the housing and/or in a direction toward the interior due to a desired shape of the first housing part and the second housing part.

4. The explosion-proof housing according to claim 1 , wherein the second section is supported on the flange section during flameproof closing of the intermediate region by elastic deformation in a defined support region directly or indirectly, wherein the defined support region forms an inner edge of the intermediate region and/or wherein the defined support region is arranged between an inner edge and an outer edge of the intermediate region.

5. The explosion-proof housing according to claim 1 , wherein the flange section and/or the second section forms a longitudinal seat and wherein the second section and/or the flange section comprises at least one longitudinal dome that is located inside the seat.

6. The explosion-proof housing claim 1 , wherein an elastically deformed intermediate element is arranged between the flange section and the second section via which the flange section and the second section are pressed against one another.

7. The explosion-proof housing according to claim 6 , wherein the intermediate element is a frame.

8. The explosion-proof housing claim 1 , wherein the first face of the flange section limiting the intermediate region and/or the second face of the second section limiting the intermediate region is orientated obliquely relative to a wall of the housing.

9. The explosion-proof housing according to claim 1 , wherein the flange section and/or the second section comprises a device for defining a bending zone.

10. The explosion-proof housing according to claim 1 , wherein the housing is reclosable.

11. The explosion-proof housing according to claim 1 , wherein an inner pressure relief device and/or an outer pressure relief device is assigned to the housing.

12. A method for manufacturing an explosion-proof housing that forms an interior for location of components that can form ignition sources, the explosion-proof housing having a first housing part with a flange section that comprises a first face and a second housing part with a second section that comprises a second face, wherein the flange section and/or the second section is a wall section, and the first face has a first configuration and the second face has a second configuration that is different from the first configuration, such that the first configuration and the second configuration define an intermediate region therebetween when the first configuration and the second configuration are adjacent to each other, and the flange section and the second section are pressed against one another after elastic deformation of the wall section, such that the intermediate region is geometrically closed in a flameproof manner due to the elastic deformation of the wall section, comprising: selecting of the flange section and the second section for limiting the intermediate region of the housing, wherein the intermediate region is geometrically closed in a flameproof manner due to the elastic deformation of the wall section, wherein the explosion-proof housing is configured according to an explosion protection category of flame-proof enclosure as defined by the standard (DIN EN 600-79/1) and the interior of the explosion-proof housing is configured to arrange electrical or electronic components therein that could form ignition sources; wherein the flange section is a sheet and/or the second section is a sheet section; wherein a sheet thickness of the flange section and/or the second section is no greater than a maximum of 5 mm.

13. The method as in claim 12 , further comprising:
assembly of the first housing part and the second housing part in order to close the housing, wherein the first face and the second face limit the intermediate region comprising a gap dimension outside a flameproof range,
applying a force on the flange section and the second section such that the flange section and the second section are pressed against one another under elastic deformation of the wall section such that the intermediate region is geometrically closed in a flameproof manner due to the elastic deformation of the wall section.

14. The method as in claim 13 , wherein a path for closing the intermediate region, such that the intermediate region is flameproof, is predominantly travelled due to the deformation of the wall section.

15. The explosion-proof housing according to claim 1 , wherein a sheet thickness of the flange section and/or the second section is no greater than maximum 3 mm.

16. The explosion-proof housing according to claim 15 , wherein the flange section is part of the first housing part and the second section is part of the second housing part, wherein the flange section and the second section confine an angle in case of abutment of the first housing part on the second housing part in a non-clamped condition due to a geometric desired shape of the flange section and the second section.

17. The explosion-proof housing according to claim 16 , wherein in abutment of the first housing part and the second housing part against one another in a non-clamped condition a width of the intermediate region increases from a support region in direction toward an environment of the housing and/or in a direction toward the interior due to a desired shape of the first housing part and the second housing part.

18. The explosion-proof

Assignees

• Stahl R Schaltgeraete Gmbh
• R Stahl Schaltgerate Gmbh

Inventors

• Limbacher Bernd
• Kondrus Elena
• Semrau Holger

Classifications

• H02G3/088

  Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets · CPC title

• H05K5/0221

  Locks; Latches · CPC title

• H05K5/0209

  Thermal insulation, e.g. for fire protection or for fire containment or for high temperature environments · CPC title

• H05K5/10

  comprising several parts forming a closed casing · CPC title

• H02B1/28 Primary

  dustproof, splashproof, drip-proof, waterproof or flameproof · CPC title