| 摘要 |
An elevator car door interlock including a locking assembly, cable assembly, switch assembly, and top mounting assembly. The elevator car door interlock works in combination with flags installed in an elevator's hoistway. A flag is installed in the areas where it is permitted to open the elevator doors. The locking assembly includes an arm that engages the flag. The flag then prevents the arm from reaching its maximum tilt and keeps it in the substantially vertical position. This causes the hook in the locking assembly to remain in the lowered position. The hook in this position allows the cable to freely travel when the elevator doors are attempted to be open. If the elevator is in a locking zone, then there is no flag present and as the door is attempted to be open, a weighted member attached to the bottom of the cable will begin to rise. However, because no flag is present to hold the arm back and subsequently, keep the hook lowered, an elongated spring biases the hook upwards until it engages a locking pin mounted to the weighted member. This prevent the cable from traveling freely throughout the shaft, thereby keeping the elevator doors locked. |
| 主权项 |
1. An elevator car door interlock, comprising:
a. an elongated shaft, b. a cable, having first end mounted to an elevator car and second end mounted to a weighted member, said weighted member includes a pin, said cable is pulled upwards when a user opens the car door of said elevator car a distance substantially equivalent to the distance that said car door is opened, b. means for mounting said shaft to an elevator car, c. a locking mechanism having a hook, d. said locking mechanism includes a spring having first end mounted to said shaft and having second end mounted to said hook, said hook is biased upwards by said spring, said hook is pushed down by said pin with sufficient force to overcome the bias of said spring, d. an elongated arm mounted to said hook having a flag engagement member at its distal end that engages a flag along an unlocking area of a hoistway, whereby when a user attempts to open said car door, said cable will rise, disengaging said pin from said hook, allowing said bias of said spring to pull said hook upwards and engage said pin, preventing said car door from opening further. |
