US 11,784,548 B2
Vibrating actuator with two resonant frequencies and two moving parts
Amir Berrezag, Berlin (DE); Pooya Ghaderi, Montreal (CA); and James Mazur, Berlin (DE)
Assigned to META PLATFORMS, INC., Menlo Park, CA (US)
Filed by META PLATFORMS, INC., Menlo Park, CA (US)
Filed on Mar. 5, 2020, as Appl. No. 16/810,354.
Application 16/810,354 is a continuation in part of application No. PCT/EP2019/084641, filed on Dec. 11, 2019.
Prior Publication US 2021/0184553 A1, Jun. 17, 2021
Int. Cl. H02K 33/18 (2006.01); H02K 33/12 (2006.01); B06B 1/04 (2006.01); G08B 6/00 (2006.01)
CPC H02K 33/18 (2013.01) [H02K 33/12 (2013.01); B06B 1/045 (2013.01); G08B 6/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A vibrating actuator having two different resonant frequencies, the vibrating actuator comprising:
a first moving part having an arrangement of magnets comprising at least two magnets, wherein the like poles of the magnets face each other and wherein the arrangement of magnets has two outer poles;
a second moving part having at least one coil such that the coil is wound over the arrangement of magnets;
a chassis formed by two parts, such that each part has a first elastic member and a second elastic member, wherein each of the first elastic member and the second elastic member face one of the two outer poles, and
the first moving part is attached to the first elastic member and the second moving part is attached to the second elastic member, wherein:
the first moving part has a first resonant frequency, based on a mass of the first moving part and an elastic constant of the first elastic member, and the second moving part has a second resonant frequency, based on a mass of the second moving part and an elastic constant of the second elastic member, such that the vibrating actuator is configured to operate with two substantially different resonant frequencies.