Structure Improvement of Digital Perpetual Clock

A structure improvement of a digital perpetual calendar clock, comprising:

• an outer housing, comprising a clock window disposed on a surface of one side of the outer housing;
• a first digit rotational roller, comprising a plurality of first page sheets disposed thereon at regular intervals and each of the first page sheets being provided with a part of one digit;
• a second digit rotational roller, comprising a plurality of second page sheets disposed thereon at regular intervals and each of the second page sheets being provided with a part of one digit;
• a carrying shaft member, one end of the carrying shaft member being embedded into the first digit rotational roller and the other end thereof being embedded into the second digit rotational roller, whereby the carrying shaft member being disposed between the first digit rotational roller and the second digit rotational roller at the same shaft;
• a blocking element, disposed on a top of the clock window of the outer housing;
• a driving device, adapted to drive the second digit rotational roller to rotate toward a bottom of the clock window of the outer housing;
• wherein the first digit rotational roller and the second digit rotational roller are disposed in the outer housing, and positions of the first digit rotational roller and the second digit rotational roller are corresponding to the clock window of the outer housing;
• wherein an inner edge, where the carrying shaft member are embedded, of the first digit rotational roller are provided with a plurality of first protrusion teeth, and an inner edge, where the carrying shaft member are embedded, of the second digit rotational roller are provided with a protrusion block;
• wherein a rotational teeth member is disposed on the carrying shaft member and two sides of the rotational teeth member are provided with a plurality of second protrusion teeth, wherein each of the second protrusion teeth at one side of the rotational teeth member is disposed inside each of the first protrusion teeth of the first digit rotational roller, and each of the second protrusion teeth at the other side of the rotational teeth member is disposed toward the second digit rotational roller;
• wherein a cushion for decreasing frictional force is disposed on and extends from an edge of the carrying shaft member and the cushion is provided with a hole penetrating through the cushion for containing the rotational teeth member;
• wherein when the second digit rotational roller is driven to rotate, the protrusion block disposed in the inner edge of the second digit rotational roller presses against the second protrusion teeth disposed on one side of the rotational teeth member to make the rotational teeth member rotate and further drive the first digit rotational roller to rotate to carry via the second protrusion teeth disposed on the other side of the rotational teeth member engaged with the first protrusion teeth disposed on the inner edge of the first digit rotational roller;
• wherein with an angle change of the first digit rotational roller and the second digit rotational roller rotating, each of the first page sheets and the second page sheets is able to be turned downward via the blocking member, whereby two of the first page sheets and two of the second page sheets are spread to show the digits thereon.