US 12,089,728 B2
Skin care device and operation method therefor
Sungkwan Seo, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Appl. No. 17/593,343
Filed by LG ELECTRONICS INC., Seoul (KR)
PCT Filed Mar. 20, 2019, PCT No. PCT/KR2019/003256
§ 371(c)(1), (2) Date Sep. 15, 2021,
PCT Pub. No. WO2020/189824, PCT Pub. Date Sep. 24, 2020.
Prior Publication US 2022/0175127 A1, Jun. 9, 2022
Int. Cl. A46B 13/02 (2006.01); A46B 7/04 (2006.01); A46B 9/02 (2006.01); A46B 13/00 (2006.01); A46B 15/00 (2006.01); A47K 7/04 (2006.01); A61H 7/00 (2006.01); A61H 23/02 (2006.01)
CPC A46B 13/023 (2013.01) [A46B 7/04 (2013.01); A46B 9/02 (2013.01); A46B 13/008 (2013.01); A46B 15/0026 (2013.01); A47K 7/04 (2013.01); A61H 7/005 (2013.01); A61H 23/0254 (2013.01); A46B 2200/102 (2013.01); A61H 2201/1685 (2013.01); A61H 2201/5058 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A skin care device comprising:
a brush module mounting part on which a brush module having a brush fixed thereto is mounted;
a vibration motor configured to vibrate the brush module mounting part and the brush module in a first direction;
a rotating shaft extending along the first direction and configured to be fastened to the brush module mounting part;
a rotating motor configured to be connected to the rotating shaft;
a mounting detection sensor configured to obtain a sensing value related to a mounting of the brush module; and
a controller configured to detect a type of the mounted brush module based on the sensing value and control driving of at least one of the vibration motor or the rotating motor according to the detected type of the mounted brush module,
wherein the brush module includes:
a brush base having a surface to which the brush is fixed;
a magnetic body receiving part fastened to an opposite surface of the brush base; and
a magnetic body located in a space between the magnetic body receiving part and the brush base, and
wherein the mounting detection sensor includes a Hall sensor.
 
8. A skin care device comprising:
a brush module mounting part on which a brush module having a brush fixed thereto is mounted;
a vibration motor configured to vibrate the brush module mounting part and the brush module in a first direction;
a rotating shaft extending along the first direction and configured to be fastened to the brush module mounting part;
a rotating motor configured to be connected to the rotating shaft;
a mounting detection sensor configured to obtain a sensing value related to a mounting of the brush module; and
a controller configured to detect a type of the mounted brush module based on the sensing value and control driving of at least one of the vibration motor or the rotating motor according to the detected type of the mounted brush module,
wherein a fastening part which is fastened to the rotating shaft is located on a bottom surface of the brush module mounting part,
wherein a fastening protrusion protruding outwards is located on an outer circumferential surface of the bottom surface, for fastening the brush module,
wherein the brush module includes a brush base having a surface on which the brush is fixed,
wherein a partial region of an opposite surface of the brush base protrudes away from the brush, and
wherein a protrusion is located at a distal end of the partial region, the protrusion protruding inward to correspond to the fastening protrusion and fastened to the fastening protrusion.
 
11. A method for operating a skin care device, the method comprising:
receiving a power on input or a selection input of an operating level;
obtaining a sensing value from a mounted detection sensor in response to receiving the power on input or the selection input;
detecting a brush module mounted on a main body of the skin care device based on the obtained sensing value; and
controlling a driving of at least one of a rotating motor or a vibration motor provided in the main body based on detecting the brush module,
wherein:
based on the brush module being detected as being a first brush module having fine bristles, the rotating motor is driven;
based on the brush module being detected as being a second brush module including a plurality of silicon protrusions, the vibration motor is driven;
the mounting detection sensor includes a Hall sensor;
each of the first brush module and the second brush module includes a magnetic body; and
detecting the brush module comprises:
based on the obtained sensing value being in a first sensing value range corresponding to the first brush module, detecting the brush module as being the first brush module; and
based on the obtained sensing value being in a second sensing value range corresponding to the second brush module, detecting the brush module mounted on the main body as being the second brush module.