Explosion-proof housing and method for the assembly thereof

Patent metadata

Field	Value
Publication number	US-12171069-B2
Application number	US-202017428175-A
Country	US
Kind code	B2
Filing date	Jan 24, 2020
Priority date	Feb 5, 2019
Publication date	Dec 17, 2024
Grant date	Dec 17, 2024

Abstract

An explosion-protected housing having a housing body, a frame part and at least two separate covers. The housing body delimits an interior space which is open at one side by means of a housing opening. The frame part has a circumferential web surrounding the housing opening. Extending within the circumferential web is a central web of the frame part that divides the housing opening into at least two opening portions. A cover abutment surface is formed, against which the covers bear in their closed position. An encirclingly closed flameproof gap is formed between each cover and the cover abutment surface when the cover is situated in the closed position and is detachably fastened by means of one or more connecting units to the frame part.

First claim

The invention claimed is:

1. An explosion-proof housing comprising:
a housing body that limits an interior and that comprises a housing opening via which access to the interior can be achieved, the housing body having a housing surface extending along a first plane;
a frame part separate from the housing body and having first and second frame part surfaces opposite one another, the first frame part surface facing the housing surface to form a first flameproof gap;
a peripheral web surrounding the housing opening and that comprises at least one central web that extends within the peripheral web and separates the housing opening in at least two opening sections; and
at least two separate covers each having a cover surface facing the second frame part surface to form a second flameproof gap.

2. The explosion-proof housing according to claim 1 , wherein at least two of the provided covers abut against each central web, if the covers are in the closing position.

3. The explosion-proof housing according to claim 1 , wherein the frame part is individual integrally configured.

4. The explosion-proof housing according to claim 1 , wherein the housing body comprises a housing flange that surrounds the housing opening.

5. The explosion-proof housing according to claim 4 , wherein the peripheral web abuts against the housing flange such that a third flameproof gap is formed between the peripheral web and the housing flange.

6. The explosion-proof housing according to claim 1 , wherein the covers are releasably attached to the frame part and/or the housing body by means of a connection arrangement.

7. The explosion-proof housing according to claim 1 , wherein the thickness of the at least one central web is larger than the thickness of the peripheral web.

8. An explosion-proof housing comprising:
a housing body that limits an interior and that comprises a housing opening via which access to the interior can be achieved,
a frame part that is attached to the housing body and that comprises a peripheral web surrounding the housing opening and that comprises at least one central web that extends within the peripheral web and separates the housing opening in at least two opening sections,
wherein the frame part is releasably attached to the housing body by a connection arrangement comprising multiple separate connection units wherein one or more of the connection units are configured as a clamping unit that is configured for creation of a clamping connection, and
at least two separate covers that abut against the peripheral web and/or the at least one central web in a closing position respectively, such that between each cover and the frame part a flameproof gap is formed.

9. The explosion-proof housing according to claim 8 , wherein the frame part and the covers are releasably attached to the housing body by means of the same connection arrangement.

10. The explosion-proof housing according to claim 8 , wherein each connection unit comprises a first connection part and a second connection part cooperating with the first connection part.

11. The explosion-proof housing according to claim 10 , wherein the second connection part of each connection unit is immovably connected with the housing body or the frame part.

12. The explosion-proof housing according to claim 10 , wherein the first connection part is an external thread part and that the second connection part is an internal thread part.

13. A method for explosion-proof arrangement of at least one electrical and/or electronic device in an explosion-proof housing, the method comprising:
providing a housing body that limits an interior and that comprises a housing opening, the housing body having a housing surface extending along a first plane;
providing a frame part having first and second frame part surfaces opposite one another, the first frame part surface facing the housing surface to form a first flameproof gap;
a peripheral web that surrounds the housing opening and comprises at least one central web that extends within the peripheral web;
providing at least two separate covers each having a cover surface facing the second frame part surface;
arranging the at least one electrical and/or electronic device in the interior of the housing body; and
attaching the frame part to the housing body in a manner such that the at least one central web separates the housing opening in at least two opening sections and attaching the at least two covers in a closing position to the frame part, wherein one cover surface faces the peripheral web and the other of the cover surfaces faces the at least one central web, such that a second flameproof gap is formed between each cover and the second frame part surface and wherein the frame part is releasably attached to the housing body by a connection arrangement.

Assignees

• Stahl R Schaltgeraete Gmbh

Inventors

• Kondrus Elena
• Schmitt Jürgen
• Sekinger Natascha
• Walch Otto
• Limbacher Bernd
• Kochendörfer Christian

Classifications

• H05K5/13 Primary

  assembled by screws · CPC title

• H02B1/28 Primary

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

• H05K5/0008 Primary

  Electricity · mapped topic