US 11,901,788 B2
Vibration generating device and electronic device
Mikio Umehara, Yonago (JP); and Yutaka Kamogi, Yonago (JP)
Assigned to MINEBEA MITSUMI Inc., Nagano (JP)
Filed by MINEBEA MITSUMI Inc., Nagano (JP)
Filed on Sep. 12, 2022, as Appl. No. 17/931,163.
Application 17/931,163 is a continuation of application No. 17/315,761, filed on May 10, 2021, granted, now 11,476,743.
Application 17/315,761 is a continuation of application No. 16/898,749, filed on Jun. 11, 2020, granted, now 11,043,887, issued on Jun. 22, 2021.
Application 16/898,749 is a continuation of application No. 15/822,359, filed on Nov. 27, 2017, granted, now 10,715,020, issued on Jul. 14, 2020.
Claims priority of application No. 2016-230688 (JP), filed on Nov. 28, 2016.
Prior Publication US 2023/0006524 A1, Jan. 5, 2023
Int. Cl. H02K 33/02 (2006.01); H01F 7/20 (2006.01)
CPC H02K 33/02 (2013.01) [H01F 7/20 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A vibration generating device comprising:
a base;
a coil including an annular shape, the coil being attached to the base;
a plate formed with a magnetic body; and
an elastic member comprising a deformable gel member having a restoring force,
the elastic member supporting the plate with respect to the base,
wherein
the plate includes a surface opposing the base and a projecting part provided with the surface opposing the base,
the projecting part is a weight, and
the projecting part is arranged inside the coil.