Rotational drive device and processing device using the same
View Patent ↗A rotational drive device includes a drive motor and a drive transmission mechanism that are coupled together via an input coupling. The input coupling includes a coupling body that is coupled and fixed to an output shaft of the drive motor. A vibration damper that projects outward and damps vibration from the drive motor is disposed at an outer peripheral portion of the coupling body.
1. A rotational drive device where a drive motor and a drive transmission mechanism are coupled together via an input coupling, wherein
the input coupling includes a coupling body that is coupled and fixed to an output shaft of the drive motor, and a vibration damper that damps vibration from the drive motor is disposed at an outer peripheral portion of the coupling body.
2. The rotational drive device of claim 1 , wherein the drive motor is a stepping motor.
3. The rotational drive device of claim 1 , wherein the drive transmission mechanism is a planetary speed-reducing mechanism.
4. The rotational drive device of claim 1 , wherein the vibration damper is configured by a flywheel that uniformly projects in the radial direction from the outer peripheral portion of the coupling body.
5. The rotational drive device of claim 1 , wherein the vibration damper is configured by a member that is separate from the coupling body.
6. The rotational drive device of claim 1 , wherein the vibration damper is integrally formed with the coupling body.
7. The rotational drive device of claim 4 , wherein the vibration damper is a flywheel with a thickness dimension that is shorter than the thickness direction dimension of the outer peripheral portion of the coupling body.
8. The rotational drive device of claim 4 , wherein the vibration damper is a flywheel including an elastic body.
9. The rotational drive device of claim 8 , wherein the vibration damper is a flywheel in which an annular member is coupled to the coupling body via the elastic body.
10. The rotational drive device of claim 4 , wherein the vibration damper is configured by a flywheel comprising an outer diameter that is three or more times the axial diameter of the drive motor.
11. The rotational drive device of claim 1 , wherein the drive motor includes a motor housing where at least part of the drive transmission mechanism housing is integrally disposed with part of the motor housing.
12. A printer comprising:
a rotational drive device where a drive motor and a drive transmission mechanism are coupled together via an input coupling, wherein the input coupling includes a coupling body that is coupled and fixed to an output shaft of the drive motor, and a vibration damper that damps vibration from the drive motor is disposed at an outer peripheral portion of the coupling body.