Patent ID: 11876426
Assignee: NIDEC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A vibrating motor comprising:
a stationary portion; and
a movable portion able to vibrate with respect to the stationary portion along a center axis extending in a vertical direction; wherein
the stationary portion includes:
a bearing portion which supports the movable portion to be able to vibrate along the center axis and has a tubular shape extending along the center axis; and
a coil which directly or indirectly opposes at least a portion of the movable portion in a radial direction;

a lower end portion of the bearing portion has a tubular shape extending along the center axis;
a communication hole which penetrates in the vertical direction and allows an outside of the bearing portion and an inside of a portion above the lower end portion of the bearing portion to communicate with each other is provided on a radially inner side of the lower end portion;
at least a portion of a lower surface of the movable portion overlaps the communication hole in the vertical direction; and
a groove-shaped communication portion extending in the radial direction and recessed upward from a lower surface of the lower end portion is defined in the lower end portion.