Intermittent driving device for a rotating grill rack

An intermittent driving device for a rotating grill rack, comprising:

• a housing installed on and fixed to an outer side of a grill burner and formed with a positioning groove;
• a motor accommodated in the housing and having an output shaft;
• and
• a control gear set fixedly provided in the housing and comprising:
• an input gear having an axle fixed to an end of the output shaft so as to rotate synchronously with the output shaft;
• an intermittent gear being positioned adjacent to the input gear, having an upper half circumferentially and concavely provided with a rotation-stopping groove and a lower half meshing with the input gear so as to be driven to rotate by the input gear;
• an output gear having an axle whose first end is pivotally connected in the housing and whose second end is exposed from the housing and configured for securely connecting with a rotating grill rack, the output gear being positioned adjacent to the intermittent gear so as to mesh with the upper half of the intermittent gear and be driven to rotate by the intermittent gear, wherein when the rotation-stopping groove of the intermittent gear is rotated to a position corresponding to the output gear, the output gear is temporarily released from meshing with the intermittent gear and stops rotating, and when the rotation-stopping groove is away from the output gear, the output gear meshes with the intermittent gear again and resumes rotation;
• and
• a continuous gear being provided with a control shaft, the control shaft being movably engaged in and movable along the positioning groove, wherein the control shaft has an end passing through the positioning groove and extending out of the housing such that, when the end of the control shaft is pushed from outside the housing, the control shaft is moved along the positioning groove;
• wherein when the control shaft is positioned at a first end of the positioning groove, the continuous gear meshes with both the input gear and the output gear so as for the rotating grill rack to rotate continuously above the grill burner, and when the control shaft is moved to a second end of the positioning groove, the continuous gear is away from the input gear and the output gear so as for the rotating grill rack to rotate intermittently above the grill burner, thus allowing a heat source in the grill burner to heat food on the rotating grill rack evenly.