Patent ID: 11876429
Assignee: NIDEC CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A vibration motor comprising:
a stationary portion; and
a movable portion capable of vibrating in a central axis direction with respect to the stationary portion,
wherein
the stationary portion includes
a coil surrounding a radially outward of the movable portion, and
a housing accommodating the movable portion and the coil,
the housing includes
a housing first region expanding in a first direction orthogonal to the central axis direction, and
a housing second region disposed on one side in a second direction orthogonal to the central axis direction and the first direction relative to the housing first region and expanding in the first direction,
in a cross-sectional view orthogonal to the central axis direction, a distance in the second direction between the housing second region and the housing first region is longest at a center position in the first direction of the housing first region, and
in the cross-sectional view, a shape formed by the housing first region and the housing second region is asymmetric with respect to an axis extending parallel to the first direction through a center position of the housing in the second direction.