Feedthrough Device for an Explosion-Proof Housing

摘要

A feedthrough device (10) for an explosion-proof housing constructed as a “flameproof enclosure” of the flame protection type. The feedthrough device (10) is arranged in a wall opening of the housing and forms a flameproof gap therein. A rigid component (11) is arranged through said gap to be displaced in its direction of extension relative to the wall. The feedthrough device (10) has a clamping body unit (20), a sleeve (21), a cap (22) and a thrust collar (23). The sleeve (21) and the cap (22) can be screwed together. Axial forces are transmitted between the clamping body unit (20) and the cap (22) via the thrust collar (23). The sleeve (21) exerts a radial clamping force on the clamping body unit (20), which is fully penetrated by a conduit (25) along a longitudinal axis (L), in which conduit a longitudinal section of a component (11) is arranged.

主权项

1. Feedthrough device (10) for feeding a component (11, 15) through a wall (13) of an explosion-proof housing, the device comprising:
a clamping body unit (20) with a conduit (25) extending along a longitudinal axis (L) for accommodation of a longitudinal section (15a) of the component (11, 15) and with a conical clamping surface (26) extending about the longitudinal axis (L), a sleeve (21) having a conical interior surface (36) having a conicity adapted to the clamping surface (26) of the clamping body unit (20), a cap (22) that can be screwed together with the sleeve (21) and has a thrust surface (53), a thrust collar (23) that is arranged between the thrust surface (53) and the cap (22) and a first axial surface (27) of the clamping body unit (20), and that is disposed to transmit axial forces between the thrust surface (52) and the first axial surface (27).