Speed reducer of angle but accurate control is windowed

The utility model discloses a speed reducer of angle but accurate control is windowed, it includes the main tank body and the odd -side body, internal main worm wheel and the main worm that is equipped with intermeshing of main tank, internal vice worm wheel and the vice worm that is equipped with intermeshing of odd -side, the main tank body is in the same place through adapter sleeve and odd -side body coupling, is connected with the motor on the main worm, be connected with rotatory limit switch on the main tank body, the key -type connection has the connecting axle on the main worm wheel, the other end and the vice worm key -type connection of connecting axle, main worm wheel, connecting axle, vice worm coaxial line, rotatory limit switch's output and connecting axle fixed connection. Has following advantage: simple structure, convenient operation can be based on the selected suitable accurate number of rotations who sets for speed reducer and rotatory limit switch of velocity ratio of angle that windows, makes the device have self -locking function to reach the window purpose of angle of precise adjustment, structure of this combination formula can adapt to the required moment of torsion of quantity of different windows simultaneously.