Transmission device for a variable displacement drive

An adjustment drive device, comprising:

• a motor;
• and
• a gear device that includes:
• an input gearwheel, to be driven by the motor, the input gearwheel including a double gearwheel having a first gearwheel and a second gearwheel coaxial to and rotationally fixed relative to the first gearwheel, the first gearwheel having a circumference that is less than a circumference of the second gearwheel, and
• an output gearwheel operable to mesh with the input gearwheel so as to be driven by the input gearwheel, the output gearwheel including a double gearwheel having a third gearwheel and a fourth gearwheel coaxial to and rotationally fixed relative to the third gearwheel, the third gearwheel having a circumference that is greater than a circumference of the fourth gearwheel,
• wherein the input gearwheel and the output gearwheel are positioned relative to one another such that in a first circumferential region of the input gearwheel, a toothing is formed on the first gearwheel which meshes with a toothing of the third gearwheel, and in a second circumferential region of the input gearwheel, a toothing is formed on the second gearwheel which meshes with a toothing of the fourth gearwheel, so that a translation ratio between the input gearwheel and the output gearwheel in the first circumferential region is different from a translation ratio between the input gearwheel and the output gearwheel in the second circumferential region.

A gear device for a motor vehicle, the gear device comprising:

• an input gearwheel to be driven by a motor, the input gearwheel including a first gearwheel and a second gearwheel coaxial to and rotationally fixed relative to the first gearwheel, the first gearwheel having a circumference that is less than a circumference of the second gearwheel;
• and
• an output gearwheel to be driven by the input gearwheel, the output gearwheel including a third gearwheel and a fourth gearwheel coaxial to and rotationally fixed relative to the third gearwheel, the third gearwheel having a circumference that is greater than a circumference of the fourth gearwheel,
• wherein the input gearwheel and the output gearwheel are positioned relative to one another such that:
• in a first circumferential region of the input gearwheel, toothing formed on the first gearwheel is to mesh with toothing formed on the third gearwheel,
• in a second circumferential region of the input gearwheel, toothing formed on the second gearwheel is to mesh with toothing formed on the fourth gearwheel, and
• a translation ratio between the input gearwheel and the output gearwheel in the first circumferential region is different than a translation ratio between the input gearwheel and the output gearwheel in the second circumferential region.