公开(公告)号：US20240072625A1

公开(公告)日：2024-02-29

申请号：US18239990

申请日：2023-08-30

Applicant: Nidec Corporation

Inventor： Noriyasu OKAMOTO ,  Jun INOUE

IPC: H02K33/02

CPC classification number: H02K33/02

Abstract: A vibration motor includes a stator and a vibrator that is capable of vibrating in a first direction. The stator includes a coil and a housing. The coil opposes the vibrator in a second direction perpendicular to the first direction. The housing accommodates the coil and the vibrator. The vibrator includes a mass body, a magnet, and a sliding portion. The mass body extends in the first direction. The magnet is fixed to the mass body and opposes the coil in the second direction. The sliding portion is located on an end surface of the mass body in a direction intersecting the first direction, and slides on an inner side surface of the housing when coming into contact with the inner side surface of the housing during vibration of the vibrator.

公开(公告)号：US20240283344A1

公开(公告)日：2024-08-22

申请号：US18581492

申请日：2024-02-20

Applicant: Nidec Corporation

Inventor： Ryoichi MITSUHATA ,  Jun INOUE

IPC: H02K33/02 ,  H02K3/28 ,  H02K5/15

CPC classification number: H02K33/02 ,  H02K3/28 ,  H02K5/15 ,  H02K2203/03 ,  H02K2203/06

Abstract: A vibration motor includes a movable portion and a stationary portion including a housing with a housing cylindrical portion, a housing lid at an end of the housing cylindrical portion, and adhesive. The housing lid includes a lid body portion covering an opening on one side of the housing cylindrical portion, and a lid fixing portion protruding from the lid body portion to another side and inside the housing cylindrical portion. The adhesive is in at least a portion of a bonding region between the housing cylindrical portion and the lid fixing portion in a radial direction. The housing cylindrical portion includes a cutout portion recessed from an end surface on one side of the housing cylindrical portion to the other side and penetrating the housing cylindrical portion in the radial direction. A portion of the bonding region is exposed to an outside of the housing through the cutout portion.

公开(公告)号：US20240128846A1

公开(公告)日：2024-04-18

申请号：US18380732

申请日：2023-10-17

Applicant: Nidec Corporation

Inventor： Toshitaka YAMAZAKI ,  Jun INOUE ,  Yoichi SEKII

IPC: H02K33/18 ,  H02K5/22

CPC classification number: H02K33/18 ,  H02K5/225

Abstract: A vibration motor includes a stationary portion and a movable portion to vibrate in a central axis direction with respect to the stationary portion. The stationary portion includes a housing and a coil on an outer side in a radial direction of the movable portion. The movable portion includes a core portion including a magnet. The housing houses the movable portion and the coil, and includes a peripheral wall portion on an outer side in the radial direction of the coil and extending in an axial direction, and a magnetic portion on a portion of the peripheral wall portion and including a magnetic body. At least a portion of the magnetic portion opposes the coil in the radial direction and extends in a circumferential direction. The peripheral wall portion includes a through hole adjacent to the magnetic portion in the axial direction and extends in the circumferential direction.