JPH0325798U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part of an embodiment of a rotating lift door to which the limit switch mounting structure according to the present invention is applied, FIG. 2 is a partially exploded enlarged view of FIG. 1, and FIG. FIG. 2 is an exploded perspective view of essential parts of an embodiment of such a device. 1... Door, 22, 22... Support arm, 31, 32
...Strut, 41, 42...Axis fulcrum, X...Axis, H...Casing, L...Limit switch.

Claims (1)

[Claims for Utility Model Registration] (1) One end of the support arm is attached near the second side edge of the door in a direction intersecting the main surface of the door, and the other end of the support arm The two shafts are respectively supported by two pivot points arranged on one axis perpendicular to the side boundary surface of the garage, and when the door is lowered and the main surface of the door is vertical, the door is at the closing limit, In a rotary elevator door that can be opened only when the door is raised and the main surface of the door is horizontal, rainwater flows from above the top of the second support that supports the two pivot points above the ground. A watertight casing is fitted to the casing, and a limit switch is installed in advance inside the casing, and the limit switch detects the limit of rotation of the support arm with respect to the shaft. A limit switch mounting structure characterized by: (2) A limit switch is loaded in advance on the inner or outer surface of the upper end of the support, and the casing is fitted onto the outside of the support while being watertight in the rainwater direction with respect to the limit switch. The limit switch mounting structure according to claim 1.