Working Principle and Main Components and Functions
The door opener mainly consists of a high-strength aluminum alloy box,a high-quality single-phase motor,a frictional overrun clutch, a worm-gear reducer, a gear clutch and an output gear.During the operation,the motor spindle drives both the reducer and output gear by means of the frictional overrun clutch, and the output gear then push racks mounted on the sliding door to move the door horizontally, so that the door can be opened and closed in the energized state.
When the special key is turned clockwise,the gear clutch is engaged and the motor power transmitted by the worm gear drives the output gear to rotate via the gear clutch so as to drive the rack mounted on the door, pushing the door to move (or to open and close) horizontally. Meanwhile because of the reverse self-locking feature of the worm gear mechanism, the door is locked as well, keeping closed against an external force.
When the special key is turned counterclockwise, the left and right parts of the gear clutch are disengaged from each other and the output gear is freed from the influence of the motor, allowing the door to be opened and closed manually.
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