Patent ID: 11894753
Assignee: MITSUBA CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC H  F | IPC F  H

Claim 3:
4. A motor having deceleration mechanism installed therein, comprising:
a motor, having a rotating body;
a first gear, rotated by the rotating body; and
a second gear, rotated by the first gear,
the motor having deceleration mechanism installed therein having:
a first tooth part, arranged in the first gear and extending spirally in an axial direction of the first gear;
an engagement projected part, arranged on the first tooth part, formed in an arc shape in a direction orthogonal to the axial direction of the first gear, and having a curvature center at a position eccentric from a rotation center of the first gear;
a plurality of second tooth parts, arranged on the second gear, inclined with respect to the axial direction of the first gear, and arranged in a circumferential direction of the second gear;
an engagement recessed part, arranged between the adjacent second tooth parts, formed in an arc shape in a direction orthogonal to the axial direction of the first gear, and engaged with the engagement projected part, and
an output shaft arranged at a rotation center of the second gear,
wherein the first tooth part comprises:
an apex, arranged on the engagement projected part at an end part of a radial outer side of the first gear, and
a relief part, arranged at an end part opposite to the apex with respect to the curvature center of the engagement projected part and configured to prevent an interference with the second tooth part.