US 12,219,338 B2
Actuator module with improved damage resistance
Neil John Harris, Los Altos, CA (US); Timothy A. Gladwin, Mountain View, CA (US); Rajiv Bernard Gomes, San Jose, CA (US); Anthony King, San Jose, CA (US); and Jason David Walker, Mountain View, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Oct. 10, 2023, as Appl. No. 18/484,234.
Application 18/484,234 is a continuation of application No. 17/628,767, granted, now 11,871,202, previously published as PCT/GB2019/052146, filed on Jul. 31, 2019.
Prior Publication US 2024/0040320 A1, Feb. 1, 2024
Int. Cl. H04R 9/04 (2006.01); H04R 7/04 (2006.01)
CPC H04R 9/047 (2013.01) [H04R 7/04 (2013.01); H04R 9/043 (2013.01); H04R 2209/027 (2013.01); H04R 2499/11 (2013.01)] 17 Claims
OG exemplary drawing
 
2. An actuator module, comprising:
a baseplate;
a frame having four sides and four corners, the frame being attached to the baseplate by posts each positioned at a respective corner of the four corners;
a magnet assembly suspended from the frame by a pair of springs, wherein each spring of the pair of springs is attached to the frame at two attachment points, each attachment point being between two posts of the frame, the magnet assembly comprising:
a ring magnet having an inside edge;
a center magnet positioned inside the inside edge of the ring magnet; and
an air gap between the center magnet and the inside edge of the ring magnet; and
a voice coil mechanically coupled to the baseplate and extending into the air gap.