Skin care device and operation method therefor

Patent metadata

Field	Value
Publication number	US-12089728-B2
Application number	US-201917593343-A
Country	US
Kind code	B2
Filing date	Mar 20, 2019
Priority date	Mar 20, 2019
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

A skin care device according to an embodiment of the present disclosure includes 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 one direction, a rotating shaft formed in the one 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 be 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 on the basis of the sensing value and control driving of at least one of the vibration motor and the rotating motor according to a detected type.

First claim

The invention claimed is:

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.

2. The skin care device of claim 1 ,
wherein the brush module further includes a first brush module provided with a fine bristle brush and a second brush module provided with a silicon brush comprising a plurality of silicon protrusions, and
wherein the first brush module and the second brush module have respective magnetic bodies that have respective magnetic field sizes that are different from each other.

3. The skin care device of claim 2 , further comprising:
a memory configured to store a sensing value range of the first brush module and a sensing value range of the second brush module.

4. The skin care device of claim 3 ,
wherein the controller is further configured to drive the rotating motor based on the sensing value obtained by the mounting detection sensor corresponding to the sensing value range of the first brush module.

5. The skin care device of claim 3 ,
wherein the controller is further configured to drive the vibration motor based on the sensing value obtained by the mounting detection sensor corresponding to the sensing value range of the second brush module.

6. The skin care device of claim 1 ,
wherein a receiving space at an interior of the skin care device is formed at a surface of the brush module mounting part, and
wherein the magnetic body receiving part and the magnetic body are located in the receiving space when the brush module is mounted.

7. The skin care device of claim 1 ,
wherein a fastening part which is fastened to the rotating shaft is located on a bottom surface of the brush module mounting part, and
wherein a fastening protrusion protruding outwards is located on an outer circumferential surface of the bottom surface, for fastening the brush module.

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.

9. The skin care device of claim 8 ,
wherein the fastening protrusion has an inclined surface, wherein a lower side of the inclined surface protrudes more than an upper side of the inclined surface, and
wherein the protrusion has an inclined surface having a shorter protrusion length toward the distal end.

10. The skin care device of claim 8 ,
wherein the protruding partial region is located outside the brush module mounting part.

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.

12. The method of claim 11 , further comprising:
based on the sensing value not being in each of the first sensing value range and the second sensing value range, controlling a speaker or at least one light source to request mounting or remounting of the brush module.

Assignees

• Lg Electronics Inc

Inventors

• Seo Sungkwan

Classifications

• A61H2201/5058

  Sensors or detectors · CPC title

• A61H2201/1685

  interchangeable · CPC title

• A61H23/0254

  with rotary motor · CPC title

• A61H7/005 Primary

  hand-held · CPC title

• A47K7/04 Primary

  {Mechanical} washing or cleaning devices, hand or mechanically, {i.e. power} operated · CPC title