JPH0167282U - - Google Patents

Description

[Brief explanation of the drawing]

The accompanying drawings show one embodiment of the invention, and the first
The figure is a partially cutaway external perspective view, FIG. 2 is a partially cutaway front view, and FIG. 3 is a partially cutaway perspective view of the torque limiter. 1: smoke exhaust window, 2: wall surface, 4: window frame, 4a: vertical frame, 4b: upper frame, 6: window hole, 9: shoji, 9a: vertical stile, 15: lifting unit, 16: base, 18: Threaded rod, 22: Female threaded body, 23: Mounting part, 26, 46
: Bevel gear, 42: Reversible motor, 45: Output shaft.

Claims (1)

[Scope of utility model registration request] Screws are mounted on vertical frames on both the left and right sides of the window hole of a smoke exhaust window that is opened and closed by raising and lowering a shoji screen, which is a transparent window hole installed in a high place on the wall of a building. A lifting unit formed by screwing a female threaded body onto a rod is fixed, and a mounting portion protruding from the outer periphery of the female threaded body is engaged with both left and right vertical frames of the shoji, and an output shaft is attached to the horizontal frame of the window hole. A reversible motor which is oriented parallel to the horizontal frame is fixed, and a gear fixed to the output shaft of the reversible motor and the threaded rod of the lifting unit are connected at the joint between the vertical frames and the horizontal frame, respectively. 1. An opening/closing drive device for a smoke exhaust window, characterized in that the output shaft and the threaded rod are connected to each other by meshing with a gear fixed to an end of the shaft.