JPH0447084U - - Google Patents

Description

[Brief explanation of the drawing]

The attached drawings show one embodiment of the present invention, and FIG. 1 is an external perspective view of a smoke exhaust window that is opened and closed by the opening/closing operation box of this embodiment, and FIG. 2 is a perspective view of the opening and closing operation box of this embodiment. Partially cutaway front view during window and smoke exhaust operation, Figure 3 is a partially cutaway front view during ventilation operation, Figure 4 is a partially cutaway right side view during ventilation operation, and Figure 5 is the window closed. FIG. 6 is a partially cutaway plan view during ventilation operation, and FIG. 7 is a partially cutaway plan view during smoke evacuation operation. A...Smoke exhaust window, B...Opening/closing operation box, W...
... wire, a ... shoji, b ... window frame, 1 ... base body, 3 ... winding drum, 6 ... ratchet wheel, 7 ... rocking body, 8 ... locking pawl, 13 ... return Claw, 15... Holding part, 16... Holding piece, 21... Push button for ventilation, 22... Push button for smoke evacuation, 24... Engagement part (of the push button for ventilation), 25... (Push button for smoke evacuation) ) engaging part, 26... recessed part (of the ventilation push button), 27...
Recess (of smoke exhaust push button), 30...Threaded rod, 33...
...Natsuto, 35...Sliding guide, 38...Stopper.

Claims (1)

[Scope of claim for utility model registration] When closing a smoke exhaust window, which consists of a wire stretched between a window frame and a shoji that is attached to the window frame and biased in the window opening direction, the extension lock must be released. The oscillating body, which is biased in the direction and pivotally supported by the base body, is held in the extended lock position by abutting the holding part on the outer periphery of the push button attached to the base body with a return force to the non-depressed position. At the same time, the locking pawl supported on the rocking body
The wire is wound by rotating the winding drum in a state in which the ratchet wheel, which rotates integrally with the winding drum supported on the base body, is locked so that it can rotate freely in the winding direction and cannot rotate in the feeding direction. When the shoji is removed, the shoji moves in the window closing direction, and the rotation of the winding drum is stopped, thereby preventing the wire from being fed out and locking the shoji so that it cannot move in the window opening direction. When opening the smoke exhaust window, when the push button is pushed in, the holding part fits into the recess of the push button, so that the push button is held in the pushed position and the rocking body is moved into the engaged position. The locking pawl is held in the feeding lock release position where the pawl is removed from the ratchet wheel,
As the smoke exhaust window is biased in the window opening direction, the wire is let out from the winding drum to move the shoji in the window opening direction, and after opening the window, the winding drum is wound up. When the return claw of the rocking body is pushed by the ratchet wheel by rotating in the direction, the holding portion of the rocking body is disengaged from the recess of the push button, and the push button returns to the non-depressed position. In addition, in the smoke exhaust window opening/closing operation box in which the rocking body returns to the extended lock position, the push button is used as a ventilation push button, and the base body is provided with a return force to the non-pushed position. A push button for smoke evacuation is mounted, and the push button for ventilation engages with the push button for ventilation and the push button for evacuation so that when the push button for smoke evacuation is pressed, the push button for ventilation that is in a non-depressed position is pushed in conjunction with the push button for ventilation. forming a joint, and holding the smoke evacuation push button in the pressed position by fitting a recess formed on the outer periphery of the smoke evacuation push button into the oscillating body when the smoke evacuation push button is pushed; supporting the holding piece that
A threaded rod that rotates in conjunction with the winding drum is supported on the base body so as not to be able to move in the axial direction, and is guided by the threaded rod so that the threaded rod cannot rotate around the axis and can move freely in the axial direction. A nut is screwed together so that the nut is threaded along the threaded rod in response to opening and closing of the smoke exhaust window, and is linked to pressing and returning of the smoke exhaust push button to the smoke exhaust push button. and a stopper that moves with the smoke evacuation window is attached to the stopper, and when the smoke evacuation window is opened to a predetermined small opening for ventilation when the smoke evacuation push button is in a non-depressed position, the nut is latched to the stopper. The nut is held in such a way that it cannot be screwed only in the fenestration direction, and when the smoke evacuation push button is in the push-in position, the nut can freely screw forward without being locked to the stopper. An opening/closing operation box for smoke exhaust windows featuring: