Patent Publication Number: US-2021170150-A1

Title: Skin care device

Description:
TECHNICAL FIELD 
     The present disclosure relates to a skin care device provided in further consideration of user&#39;s convenience. 
     BACKGROUND ART 
     The number of people who are interested in appearance is increasing day by day, and the number of people who regularly take care of their skin by attending dermatologists and skin care centers as well as cosmetics is increasing. However, the burden on consumers is increasing because it costs a lot to use a dermatologist or a skin care center, and self-skin care devices are emerging to make it easier to manage. 
     In the past, no portable type of device was available to individuals, but recently, many portable care devices have been commercialized due to the development of wireless communication and the miniaturization of parts. 
     Device for skin beauty is implemented in various ways. The skin is subject to fine stimulation and changes in the activities of cells, which can lead to improvement of wrinkles and whitening. In addition, skin care devices that maximize the performance of cosmetics by applying cosmetics to the skin and assisting absorption, vibrates the skin to promote the penetration of cosmetics between skin cells. Ultrasound can also massage the skin to relax muscles and increase elasticity. 
     There is a problem in which the absorption efficiency varies depending on the ingredients of cosmetics, as simply vibrating the skin does not absorb all the ingredients of cosmetics. 
     Skin care devices that promote the absorption of cosmetics by applying electric current in an electrical way require the user to hold the electrodes located on the handle in order to flow current to the user&#39;s body, so the position of the hand holding the handle is limited and it is difficult for a third party to use the skin care device for management. 
     DISCLOSURE 
     Technical Task 
     The technical task of the present disclosure is to provide a skin care device that can increase the absorption rate of cosmetics containing various ingredients. 
     Technical Solutions 
     In one technical aspect of the present disclosure, provided herein is a skin care device, including a body including a grip part gripped by a user and a head part located at an end portion of the grip part, a plurality of skin contact plates located at an end portion of the head part, a plurality of vibrators providing vibration to the skin contact plate, and a controller supplying current to the skin contact plate and controlling the vibrator, wherein + pole and − pole of the controller are connected to the skin contact plates different from each other, respectively. 
     Each of a plurality of the vibrators may provide the vibration of a different frequency. 
     The skin contact plate may include a first skin contact plate in a circular shape and a second skin contact plate in a ring shape located on a circumference of the first skin contact plate. 
     The skin care device may further include a support plate located on a backside of the second skin contact plate in a manner of being spaced apart in a prescribed distance and 
     a connecting leg connecting the support plate and the second skin contact plate together. And, the vibrator may include a first vibrator providing the vibration by being coupled to a backside of the first skin contact plate and a second vibrator seated on the support plate to provide the vibration to the second skin contact plate. 
     The connecting leg may have a cylindrical shape connected to the second skin contact plate in the ring shape at a plurality of points and electric wire connecting the first vibrator, the first vibration plate and the controller may pass through the connecting leg. 
     A plurality of the skin contact plates may form sector shapes having the same diameter and may be disposed in a manner of forming a circular shape. 
     A plurality of the skin contact plates may be inclined at different angles, respectively. 
     The skin care device may further include a connecting part connecting the skin contact plates in between and having a variable shape. 
     The skin contact plate may include conductive material and the connecting part may include insulating material to electrically divide a plurality of the skin contact plates from each other. 
     The connecting part may be formed of ductile material. 
     Advantageous Effects 
     A skin care device according to the present disclosure is described as follows. 
     According to at least one of embodiments of the present disclosure, the absorption rate of cosmetics mixed with various ingredients can be increased. 
     According to at least one of embodiments of the present disclosure, the inconvenience that users have to hold onto and use separately equipped electrodes can be solved. 
     Other objects and further scope of applicability of the present disclosure will become apparent from the detailed description given below. It is to be understood, however, that the detailed description and specific examples such as preferred embodiments of the disclosure are given by way of illustration only, since it is obvious to those skilled in the art that various changes and modifications can be made within the spirit and scope of the disclosure. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIG. 1  is a perspective diagram of a skin care device working on a deep part and surface of a human skin related to the present disclosure. 
         FIG. 2  is a diagram showing one embodiment of an inside of a head part of a skin care device related to the present disclosure. 
         FIG. 3  is a diagram showing one embodiment of a head part of a skin care device related to the present disclosure. 
         FIG. 4  is a diagram showing another embodiment of a head part of a skin care device related to the present disclosure. 
         FIG. 5  is a front diagram showing another embodiment of a head part of a skin care device related to the present disclosure. 
         FIG. 6  is an exploded perspective diagram of a tip head of a skin care device related to the present disclosure. 
     
    
    
     BEST MODE FOR DISCLOSURE 
     Devices for skin care or treatment are implemented in a variety of ways. The skin is subjected to minute stimuli to change the activity of cells, which can lead to improved skin effects on wrinkles, whitening, etc. 
     One of the most representative forms is the noninvasive form of giving electrical impulses to the skin, or the invasive form of giving physical stimuli. 
     Although a device of an individually portable type was not available conventionally, as the development of wireless communication and the downsizing of components have become more common in recent years, portable care devices are popularly commercialized. 
       FIG. 1  is a perspective diagram of a skin care device  100  working on a deep part and surface of a human skin related to the present disclosure. The skin care device  100  according to the present disclosure includes a grip part  110  gripped by a user with a hand and a head part  120  having a skin contact plate  121  located at an end portion of the grip part  110  to contact with a user&#39;s skin. When a user applies a force to the skin contact plate  121  to touch a face, the grip part  110  and the head part  120  may form angles between 90˜180 degrees for facilitation. 
     The grip part  110  may include a space inside to receive a battery  190  as a power supply part and a printed circuit board  180  as a controller therein, and a manipulating part for manipulation of power-on/off may be provided to an outer surface of the grip part  110 . Additionally, a display part displaying a current operational state may be included. The display part may employ a way of displaying a color of a lamp simply or a way of displaying texts or symbols like LCD. 
     A power connection part for connecting an external power source may be included in the grip part  110 . If the battery  190  is not provided, the power connection part may adopt a way of supplying permanent power. If the battery  190  is provided, the power connection part plays a role in charging the battery  190 . The charging may be performed in a manner of supplying power by connecting a charger supplied with external power through a terminal or using wireless charging. 
     As the head part  120  is directly touched with user&#39;s skin, it should be equipped with a waterproof structure to prevent particles from entering an inside of the head part  120 . The head part  120  includes a skin contact plate  121  contacting with user&#39;s skin. And, the skin care device  100  of the present disclosure is characterized in having a plurality of the skin contact plates  121 . 
     In the related art, a single skin contact plate is used to supply ultrasonic waves of a single wavelength, but the skin care device  100  of the present disclosure is characterized in having the head part  120  that provides vibrations in various ultrasonic bands owing to the difference in wavelength having a good absorption rate depending on the ingredients of cosmetics. 
     As shown in  FIG. 1 , a first skin contact plate  121   a  and a second skin contact plate  121   b  located around a circumference of the first skin contact plate  121   a  in a ring shape are provided. And, a third skin contact plate  121   c  located around a circumference of the second skin contact plate  121   b  may be provided. Moreover, two or more skin contact plates  121  may be provided. Each of the skin contact plates  121  may apply ultrasonic waves on different frequency bands by vibrators vibrating in different wavelengths, respectively. For example, a first vibrator may vibrate with ultrasonic wave of 280 kHz, a second vibrator may vibrate with ultrasonic wave of 350 kHz, and a third vibrator may vibrate with ultrasonic wave of 1 MHz. 
     A connecting part  122  of ductile material may be provided between the skin contact plates  121 , and is capable of a waterproof function to prevent water and the like from flowing into a gap between the connecting part  122  and the skin contact plate  121 . The skin contact plate  121  may be connected using a structure such as a hinge. In this case, it is necessary to perform waterproof treatment between the skin contact plates  121 . 
       FIG. 2  is a diagram showing one embodiment of an inside of the head part  120  of the skin care device  100  related to the present disclosure, and  FIG. 3  is a cross-sectional diagram showing one embodiment of the head part  120  of the skin care device  100  related to the present disclosure. Since each of the second and third skin contact plates  121   b  and  121   c  has an sufficient space for coupling an vibrator thereto except the first skin contact plate  121   a  located at the center of the skin contact plates  121  disposed in a concentric circle shape [ FIG. 1 ], a second vibrator and a third vibrator may be disposed in a second vertical direction [ FIG. 2 ,  FIG. 3 ]. 
     A first support plate  131   a  connected to the second skin contact plate  121   b  through a connecting leg  132  and a second support plate  131   b  connected to the third skin contact plate  121   c  through the connecting leg  132  are included. Since the first support plate  131   a  is smaller than the second support plate  131   b , it may be located inside the connecting leg  132  connecting the second support plate  131   b  and the third skin contact plate  121   c  together. The second vibrator applying vibration to the second skin contact plate  121   b  may be seated on the first support plate  131   a , and the third vibrator applying vibration to the third skin contact plate  121   c  may be seated on the second support plate  131   b . The connecting leg  132  is not formed in a cylindrical shape but has a shape in which a plurality of legs are connected together, whereby electric wires connecting the vibrators, the skin contact plates  121  and the printed circuit board may be disposed between the connecting legs  132 . 
     Each of the support plates  131   a  and  131   b  may include a fixing part formed of ductile material provided to a case forming an exterior of the head part  120  so as to be stably fixed thereto. As the connecting part  122  located between the skin contact plates  121  or the fixing parts are formed of the ductile material, it is able to reduce the effect caused to another skin contact plate  121  by the vibration generated from each vibrator. 
       FIG. 4  is a diagram showing another embodiment of a head part  120  of a skin care device  100  related to the present disclosure, and  FIG. 5  is a front diagram showing another embodiment of the head part  120  of the skin care device  100  related to the present disclosure. 
     Referring to  FIG. 4  and  FIG. 5 , a skin contact plate  121  of a skin care device may have a sector shape generated from sectoring a circular shape. As shown in  FIG. 5 , the skin contact plate may be divided into three equal parts or more. Alternatively, circular skin contact plates  121  may be disposed side by side. According to the present embodiment, unlike the former embodiment, one skin contact plate  121  may be formed to have thickness enough for a vibrator to be seated thereon and, as shown in  FIG. 4 , a vibrator may be directly seated on the skin contact plate  121 . According to the former embodiment, a size of the head part  120  can be reduced but thickness thereof increases. On the contrary, according to the present embodiment, the thickness of the head part  120  can be reduced. 
     As mentioned in the description of the former embodiment, sine the connecting part  122  of the ductile material is inserted between the skin contact plates  121 , each of the skin contact plates  121  may vibrate with ultrasonic wave of a different frequency. As shown in  FIG. 5 , the connecting part  122  may be provided between the case forming the exterior of the head part  120  and the skin contact plate  121  as well as between a plurality of the skin contact plates  121 . 
     As the connecting part  122  has elasticity, it may reduce interference between vibrations applied to the skin contact plates  121 , respectively and each of the skin contact plates  121  may move individually. If each of the skin contact plates  121  moves individually, it may be inclined at a difference angle along a curved surface of a face, whereby the effect of adherence between the skin contact plate  121  and a user skin can be increased. 
       FIG. 6  is an exploded perspective diagram of a tip head of the skin care device  100  related to the present disclosure. The skin contact plate  121  of the present disclosure is formed of conductive material and has one pole connected to the controller  180 . Namely, the first skin contact plate  121   a  is connected to the + pole and the second skin contact plate  121   b  is connected to the − pole. If there are four or more skin contact plates  121 , each of the skin contact plates  121  is connected to one pole. 
     The application of microcurrent to the user&#39;s skin improves the skin penetration effect of the vitamin-like molecules with polarity along the current, allowing cosmetics ingredients to pass through the epidermis  11  to the dermis  12 . The + and − poles should be connected to separate conductors as the + and − pole connections to one electrode cause the current to flow back to the opposite polar direction rather than through the user&#39;s body. 
     As the conventional skin contact plate  121  consists of one conductor, it uses the principle that current flows through the skin when held by hand in a manner of exposing the electrode part to the grip part  110 . However, since the present disclosure includes a plurality of skin contact parts, if they are connected to different poles, respectively, as shown in  FIG. 6 , the current flows from the first skin contact plate  121   a  to the second skin contact plate  121   b  through the skin. 
     The skin care device  100  of the present disclosure does not need to have a separate electrode part provided to the grip part  110 . As current passes through only the area adjacent to a contacted skin, the cosmetics ingredients can penetrate the skin without the current needlessly passing through a body. 
     As described above, according to at least one of embodiments of the present disclosure, the absorption rate of cosmetics mixed with different ingredients can be raised. In addition, a user can be relieved of the inconvenience of holding onto and using a separately provided electrode. 
     Those skilled in the art will appreciate that the present disclosure may be carried out in other specific ways than those set forth herein without departing from the spirit and essential characteristics of the present disclosure. 
     The above embodiments are therefore to be construed in all aspects as illustrative and not restrictive. The scope of the disclosure should be determined by the appended claims and their legal equivalents, not by the above description, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.