Gear motor having safety mechanism

摘要

A gear motor having a safety mechanism includes a motor body, a speed reduction mechanism, a transmission mechanism, and a touch switch. The speed reduction mechanism includes a worm and a worm wheel drivingly engaged with the worm. The transmission mechanism includes a base fixed to the speed reduction mechanism, a lead screw rod pivotally connected to the base and rotatably driven by the worm wheel, and a nut threadedly connected to the lead screw rod. The touch switch is electrically connected to the motor body and provided aside the lead screw rod, thereby stopping the motor body when the nut contacts the touch switch. Thus, the gear motor not only controls the operation of the driven mechanism, but also allows various driven mechanisms to be mounted thereon. The assembled volume of the gear motor and the driven mechanism is reduced.

主权项

1. A gear motor having a safety mechanism, including:
a motor body; a speed reduction mechanism comprising a worm extending from the motor body and a worm wheel positioned to correspond to the worm and drivingly engaged therewith; a transmission mechanism comprising a base fixed to the speed reduction mechanism, a lead screw rod pivotally connected to the base and rotatably driven by the worm wheel, and a nut threadedly connected to the lead screw rod to generate a linear movement; and a touch switch electrically connected to the motor body, the touch switch being provided on one side of the lead screw rod to correspond to a travelling path of the nut, thereby stopping the running of the motor body when the nut contacts the touch switch; wherein the base is provided with a guiding groove in parallel to the lead screw rod, and the nut has a rotation-stopping portion slidably inserted into the guiding groove, and the rotation-stopping portion is exposed to the outside of the base through the guiding groove.