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

Claim 19:
20. 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,
housing second regions disposed on both sides of the housing first region in the first direction, and
a housing third region that is disposed on one side in a second direction orthogonal to the central axis direction and the first direction relative to the housing first region, expands in the first direction, and is connected to the housing first region in the second direction by the housing second region, and
in a cross-sectional view orthogonal to the central axis direction,
a shape formed by the housing first region, the housing second region, and the housing third region is symmetrical with respect to an axis extending parallel to the first direction through a center position of the housing in the second direction,
the housing second region has a bent part bent in an arc shape, and
a width of the housing first region in the first direction is larger than a width of the housing second region and smaller than twice the width of the housing second region.