US 11,741,799 B2
Curved haptic actuator and wearable device comprising same
Hyeong Jun Kim, Seoul (KR); Myung Sun Park, Seoul (KR); Jong Hun Lee, Seoul (KR); and Cheol Hee Lee, Seoul (KR)
Assigned to CK MATERIALS LAB CO., LTD., Seoul (KR)
Filed by CK MATERIALS LAB CO., LTD., Seoul (KR)
Filed on Aug. 17, 2021, as Appl. No. 17/403,879.
Application 17/403,879 is a division of application No. 16/754,859, granted, now 11,403,922, previously published as PCT/KR2017/013387, filed on Nov. 23, 2017.
Prior Publication US 2021/0383660 A1, Dec. 9, 2021
Int. Cl. G08B 6/00 (2006.01); G06F 3/01 (2006.01); H01F 1/147 (2006.01); H01F 41/12 (2006.01); G06F 1/16 (2006.01)
CPC G08B 6/00 (2013.01) [G06F 3/016 (2013.01); H01F 1/14708 (2013.01); H01F 41/125 (2013.01); G06F 1/163 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A strap curved to wrap around at least a portion of a human body, the strap comprising:
a curved haptic actuator installed in at least a part of the strap,
wherein the curved haptic actuator comprises:
a housing having a receiving space defined in the housing, the receiving space and an outer shape of the housing being curved;
a vibrator disposed in the receiving space, having a curved shape in a same direction as a curved direction of the housing, and movable along the curved direction of the housing;
a magnetic field generator installed on an inner wall of the housing and generating a magnetic field and applying the generated magnetic field to the vibrator; and
an input unit configured to receive an input signal from an outside for driving the vibrator so that the curved haptic actuator transmits a vibration along the curved direction of the strap,
wherein a distance between the vibrator and the inner wall of the housing closest to the vibrator is less than 3 mm and greater than 0.