Spark gap arrangement and method for securing a spark gap arrangement

Patent metadata

Field	Value
Publication number	US-9444227-B2
Application number	US-201314646248-A
Country	US
Kind code	B2
Filing date	Dec 12, 2013
Priority date	Dec 18, 2012
Publication date	Sep 13, 2016
Grant date	Sep 13, 2016

Abstract

A spark gap arrangement includes a discharge chamber, an electrode head and a contact connection arranged outside the discharge chamber. The electrode head is electrically conductively connected and mechanically coupled to the contact connection in such a way that, when the contact connection is removed from its position or when the contact connection reaches a preset position, the electrically conductive connection is interrupted, and the electrode head is mechanically decoupled from the contact connection so that the electrode head is movable in the direction of the discharge chamber interior and/or within the discharge chamber.

First claim

The invention claimed is:

1. A spark gap arrangement comprising:
a discharge chamber;
an electrode head; and
a contact connection arranged outside the discharge chamber to prevent manipulation, wherein the electrode head is electrically conductively connected and mechanically coupled to the contact connection in such a way that, when the contact connection is removed from its position or when the contact connection reaches a preset position, the contact connection is interrupted and the electrode head is mechanically decoupled from the contact connection so that the electrode head is permanently ejected in a direction of an interior of the discharge chamber or within the discharge chamber in order to permanently disable the spark gap.

2. The spark gap arrangement according to claim 1 , wherein the electrode head is coupled to the contact connection via a magnetic connection.

3. The spark gap arrangement according to claim 1 , comprising a coupling mechanism comprising a first coupling part, which comprises the contact connection, and a second coupling part, which comprises the electrode head, wherein the first coupling part is movable relative to the second coupling part, and when the contact connection is removed from its position or when the contact connection reaches a preset position, the electrode head is mechanically decoupled permanently from the contact connection.

4. The spark gap arrangement according to claim 3 , wherein the electrode head is coupled to the contact connection via a magnetic connection.

5. The spark gap arrangement according to claim 4 , wherein the first coupling part comprises a magnet.

6. The spark gap arrangement according to claim 5 , wherein the second coupling part comprises a magnet.

7. The spark gap arrangement according to claim 4 , wherein the second coupling part comprises a magnet.

8. The spark gap arrangement according to claim 1 , comprising an ejection mechanism, which is triggered when the contact connection is removed from its position or when the contact connection reaches a preset position, and which is configured to move the electrode head in the direction of the interior of the discharge chamber or within the discharge chamber.

9. The spark gap arrangement according to claim 8 , wherein the ejection mechanism comprises a spring element, which is held in a pretensioned state by a detent.

10. The spark gap arrangement according to claim 9 , further comprising a coupling mechanism comprising a first coupling part, which comprises the contact connection, and a second coupling part, which comprises the electrode head;
wherein the first coupling part is movable relative to the second coupling part, and when the contact connection is removed from its position or when the contact connection reaches a preset position, the electrode head is mechanically decoupled permanently from the contact connection; and
wherein the coupling mechanism comprises a guide bush, in which the spring element is positioned.

11. The spark gap arrangement according to claim 10 , wherein the spring element is a helical compression spring.

12. The spark gap arrangement according to claim 10 , wherein the first coupling part comprises the guide bush.

13. The spark gap arrangement according to claim 10 , wherein the second coupling part comprises the guide bush.

14. The spark gap arrangement according to claim 10 , wherein the detent comprises a sphere or a pin, which are positioned in a cutout in the guide bush.

15. The spark gap arrangement according to claim 14 , comprising a retainer, which blocks movement of the sphere or the pin into the position in which restoring of the spring element is enabled so that, when the contact connection is removed from its position or when the contact connection reaches a preset position, the sphere and the pin are moved away from the retainer into the position in which the restoring of the spring element is enabled.

16. The spark gap arrangement according to claim 9 , further comprising a coupling mechanism comprising a first coupling part, which comprises the contact connection, and a second coupling part, which comprises the electrode head;
wherein the first coupling part is movable relative to the second coupling part, and when the contact connection is removed from its position or when the contact connection reaches a preset position, the electrode head is mechanically decoupled permanently from the contact connection;
wherein the detent is movable out of a position in which it blocks restoring of the spring element into a position in which it enables the restoring of the spring element; and
wherein the coupling mechanism is coupled in such a way that movement of the detent is blocked, and when the contact connection is removed from its position or when the contact connection reaches a preset position, unblocking is enabled.

17. The spark gap arrangement according to claim 9 , comprising a movable ejector, arranged between the spring element and the electrode head, wherein the detent engages in the ejector so that movement of said ejector is blocked.

18. A method for disabling a spark gap arrangement comprising an electrode head, a discharge chamber and a contact connection arranged outside the discharge chamber to prevent manipulation, wherein the electrode head is electrically conductively connected and mechanically coupled to the contact connection, and wherein the method comprises, when the contact connection is removed from its position, interrupting the contact connection, mechanically decoupling the electrode head from the contact connection, and permanently ejecting the electrode head in a direction of an interior of the discharge chamber or within the discharge chamber in order to permanently disable the spark gap.

Assignees

• Epcos Ag

Inventors

• DäUMER WOLFGANG
• Westebbe Thomas

Classifications

• H01T13/26 Primary

  for adjusting spark gap otherwise than by bending of electrode · CPC title

• H01T13/08

  Mounting, fixing or sealing of sparking plugs, e.g. in combustion chamber · CPC title

• H01T2/02 Primary

  comprising a trigger electrode or an auxiliary spark gap · CPC title

• H01T4/02

  Details · CPC title