US 11,056,960 B2
Tactile actuator
Hyeong Jun Kim, Seoul (KR); Jong Hyung Jung, Seoul (KR); Jong Hun Lee, Seoul (KR); and Nam Seok Kim, Seoul (KR)
Assigned to CK MATERIALS LAB CO., LTD., Seoul (KR)
Appl. No. 16/348,126
Filed by CK MATERIALS LAB CO., LTD., Seoul (KR)
PCT Filed Nov. 8, 2017, PCT No. PCT/KR2017/012573
§ 371(c)(1), (2) Date Jun. 3, 2019,
PCT Pub. No. WO2018/088788, PCT Pub. Date May 17, 2018.
Claims priority of application No. 10-2016-0148360 (KR), filed on Nov. 8, 2016; and application No. 10-2017-0146812 (KR), filed on Nov. 6, 2017.
Prior Publication US 2019/0363622 A1, Nov. 28, 2019
Int. Cl. G06F 3/01 (2006.01); H02K 33/16 (2006.01)
CPC H02K 33/16 (2013.01) [G06F 3/01 (2013.01); G06F 2203/014 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A tactile actuator comprising:
a housing having an accommodation space therein;
an upper case configured to cover an upper portion of the accommodation space;
a vibrator disposed in the accommodation space;
an upper elastic member configured to connect an upper side and the vibrator; and
a coil configured to form a magnetic field to drive the vibrator, wherein one end portion of the upper elastic member is fixed at a position spaced apart from the upper case on a side wall of the housing,
wherein the vibrator comprises:
a mass body connected to the upper elastic member and having a magnetic property, and
wherein the mass body comprises:
a first stepped portion downwardly recessed from an edge of a top surface of the mass body, the first stepped portion being disposed outwardly from a center of a top surface of the mass body such that the first stepped portion does not overlap with the top surface of the mass body; and
a second stepped portion downwardly recessed from the first stepped portion, the second stepped portion being disposed outwardly from the first stepped portion, and
the upper elastic member comprises:
an upper elastic fixer fixed to the upper side of the housing:
an upper elastic support fit into the first stepped portion; and
an upper elastic connector configured to connect the upper elastic fixer and the upper elastic support.