Water-tight switching unit for electric torch - forms fluid-tight abutment between inner holding section, annular connecting section and shoulder when holding piece is fixed in rear annular wall of coupling piece

摘要

The switching unit includes a conductive coupling piece (3) with a front annular wall (32) which can be displaced lengthwise relative to a rear annular end section (143) of the cylindrical body (140) of the torch. The front wall contacts the rear end section to make an electrical connection with it. A central annular section (30) is provided between the front annular section and a rear annular section (31). A conductive spring (41) is arranged in the coupling piece. An elastomer cap (6) comprises an annular insertion section (64) extending in the axial direction. An inner annular holder (51) has smaller dimensions than those of the external circumference of an annular connecting section (66), to form a fluid-tight abutment between the inner holding section, the annular connecting section and a shoulder (61A) when a holding piece (5) is fixed in the rear annular wall of the coupling piece.