ACTUATION DEVICE FOR AN EXPLOSION-PROOF HOUSING

摘要

An actuation device (11) for an explosion-proof housing (10) in compliance with the ignition protection category “pressure-proof encapsulation”. The actuation device (11) comprises an actuation unit (15) with a manually actuatable actuation element (16), and an actuation device (11) having a switch unit (14) with a switch element (14) for switching an associated electrical contact. The actuation unit (15) is located outside the housing (10), whereas the switch unit (13) is located in the interior space (12) of the housing (10). An adapter device (22) mechanically connects the actuation unit (15) and the switch unit (13) and comprises at least one adapter plunger (38) that is supported so as to be movable in axial direction (A) in order to transmit the movement of the actuation element (16) via the adapter plunger (38) to the switch element (14). The adapter plunger (38) is arranged in an adapter channel (39) so as to be axially shiftable while forming a gap (53) that is resistant to ignition transmission.

主权项

1. Actuation device (11) for an explosion-proof housing (10) comprising:
an actuation unit (15) having a first carrier (17); an actuation element (16) moveable relative to the first carrier (17) in an axial direction (A); a switch unit (13) having a second carrier (19); a switch element (14) movable relative to the second carrier (19) in said axial direction (A); an adapter device (22) having an adapter body (23) extending in the axial direction (A), said adapter body (23) having a first mounting section (26) on one axial end and a second mounting section (27) on the other axial end; said adapter device (22) having an adapter plunger (38) that is supported so as to be shiftable in an adapter channel (39) extending in the axial direction (A) in the adapter body (23), said adapter plunger (38) and said adapter channel (39) defining therebetween at least one gap (53) resistant to ignition transmission; said adapter plunger (38) having a first axial end (42) associated with said actuation element (16) and a second axial end (43) associated with said switch element (14) of the switch unit (13); and said first mounting section (26) of said adapter body (23) being separably connected to the first carrier (17) of the actuation unit (15) and the second mounting section (27) if said adapter body (23) being separably connected to the second carrier (19) of the switch unit (13) in such a manner that the two carriers (17, 19) and the adapter body (23) are immovably supported next to each other.