Skin care device

Abstract

To provide a device used for skincare.SOLUTION: A device includes a housing, a head mount, a first head, a second head, and a controller. The head mount is coupled to the housing. The first head includes a first contact portion that comes into contact with a target object. The first head is detachably attached to the head mount along a first central axis of the head mount and is electrically connected to the head mount. The second head includes a second contact portion that is formed to surround the first contact portion and contacts the target object together with the first contact portion. The second head is detachably attached to the first head along the first central axis and is electrically connected to the first head. The controller controls the first head and the second head.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to technology used for skin care. [Background technology]

[0002] Skin care devices that can be used for skin care are already known. For example, a user can use the skin care device by holding it in their hand and bringing it into contact with the skin on their face.

[0003] Such skin care devices can provide specific effects to the skin. Additionally, the skin care devices can be used in conjunction with skin care products that are applied to the user's skin. The skin care devices can act to aid in the absorption of the skin care products into the user's skin. Summary of the Invention

[0004] At least one embodiment of the present disclosure provides technology that can perform one or more skin care functions with a single device.

[0005] At least one embodiment of the present disclosure provides a technology that allows for easy combination and replacement of heads that perform one or more functions.

[0006] At least one embodiment of the present disclosure provides users with enhanced usability, enhanced operability, and a differentiated usage experience.

[0007]

[0003] The embodiments disclosed herein relate to a device that can be used for skin care. The device according to one embodiment includes a housing, a head mount, a first head, a second head, and a controller. The head mount is configured to couple to the housing. The first head includes a first contact portion that contacts a target object. The first head is configured to be detachably attached to the head mount along a first central axis of the head mount and electrically connected to the head mount. The second head includes a second contact portion that surrounds the first contact portion and contacts the target object together with the first contact portion. The second head is configured to be detachably attached to the first head along the first central axis and electrically connected to the first head. The controller is configured to control the first head and the second head.

[0008] In one embodiment, the head mount is configured to rotate about a first central axis to couple to the end of the housing in a first orientation or a second orientation, and the controller is configured to supply power to the first head and the second head when it detects that the head mount is coupled to the end of the housing in the first orientation, and to cut off power when it detects that the head mount is no longer coupled to the end of the housing in the first orientation.

[0009] In one embodiment, the housing includes a detection switch disposed inside the housing and configured to transmit a detection signal to the controller when the head mount is coupled to an end of the housing in a first orientation, and the head mount includes a switch operating portion that can turn the detection switch on or off by rotating the head mount.

[0010] In one embodiment, a mounting plate is formed at the end of the housing to which the head mount is coupled, the mounting plate being inclined at a predetermined angle relative to the second central axis of the housing. The head mount is configured to rotate around the first central axis to couple to the mounting plate in a first orientation or a second orientation. When the head mount is coupled in the first orientation, the first central axis of the head mount is inclined at the angle relative to the second central axis of the housing. When the head mount is coupled in the second orientation, the first central axis of the head mount is parallel to or coaxial with the second central axis of the housing.

[0011] In one embodiment, the head mount includes a ball that is resiliently compressed toward a mounting plate, and the mounting plate includes a detent into which the ball is releasably inserted when the head mount is coupled to an end of the housing in a first orientation or a second orientation.

[0012] In one embodiment, the head mount includes a locking latch that is resiliently compressed toward the first central axis, the locking latch including a push button disposed on the outer circumferential surface of the head mount, and the first head includes a locking groove into which the locking latch is releasably coupled.

[0013] In one embodiment, the first head includes a disk, a shaft, and a protruding end. The disk is removably attached to the head mount. The shaft protrudes from the disk along a first central axis. The protruding end is formed on the shaft by a first contact portion. The second head includes a first through-hole and a first annular body. The shaft of the first head is inserted into the first through-hole along the first central axis. The first annular body includes an upper end formed along the circumference of the first through-hole by the second contact portion and is further disposed on the disk of the first head.

[0014] In one embodiment, when the second head is attached to the first head, the first contact portion of the protruding end and the second contact portion of the upper end are concentrically arranged about the first central axis.

[0015] In one embodiment, the first head includes a first magnet disposed within the disk, and the second head includes a second magnet disposed within the first annular body and corresponding to the first magnet.

[0016] In one embodiment, the shaft of the first head includes a key formed on the outer circumferential surface of the shaft along the first central axis, and the first through hole of the second head includes a keyway into which the key is inserted.

[0017] According to one embodiment, the device further includes a third head configured to be removably attached to the first head along the first central axis and electrically connected to the first head. The third head includes a third contact portion configured to surround the first contact portion and to contact the target object together with the first contact portion. The second head and the third head are removably and selectively attached to the first head. The controller is configured to control the third head.

[0018] In one embodiment, the third head includes a second through-hole and a second annular body. The shaft of the first head is inserted into the second through-hole along the first central axis. The second annular body includes an upper end formed along the circumference of the second through-hole by a third contact portion and is further disposed on the disk of the first head.

[0019] In one embodiment, the third head includes a third magnet disposed within the second annular body and corresponding to the first magnet.

[0020] In one embodiment, the third through hole of the third head includes a keyway into which the key of the first head is inserted.

[0021] In one embodiment, the first contact portion includes an ultrasonic element that applies ultrasonic waves to the target object for sonophoresis. One of the second contact portion and the third contact portion includes a first electrode, and the other of the second contact portion and the third contact portion includes a second electrode and a third electrode. The first electrode is configured to alternately apply radio waves to the target object. The second electrode is configured to apply a first current to the target object for electroporation. The third electrode is configured to apply a second current to the target object for iontophoresis. The housing includes a counter electrode disposed on the outer circumferential surface of the housing and configured to apply the second current to the target object.

[0022] In one embodiment, the first electrode can include a pair of electrodes each formed in an arc shape so as to surround a portion of the ultrasonic element in the circumferential direction of the first central axis.

[0023] In one embodiment, the second electrode may include a positive electrode and a negative electrode for applying a first current to the target object. Each of the positive electrode of the second electrode, the negative electrode of the second electrode, and the third electrode may be formed in an arc shape so as to surround a portion of the ultrasonic element in a circumferential direction of the first central axis.

[0024] According to one embodiment, the apparatus includes a power supply disposed within the housing, the power supply configured to be controlled by the controller to provide power to the first head, the second head, and the third head.

[0025] According to one embodiment, the device includes a display disposed on the housing, the display configured to display information regarding the operating state of the device and controllable by the controller.

[0026] In one embodiment, the device includes a speaker disposed within the housing, the speaker configured to audibly emit information regarding the operating state of the device and controllable by the controller.

[0027] According to one embodiment, the device includes a memory card reader disposed within the housing, the memory card reader configured to receive a memory card, and connected to the controller.

[0028] According to one embodiment, the device includes a cradle configured to support a housing, a head mount, and a first head coupled in sequence along a second central axis of the housing, the cradle including a first docking portion supporting a lower end of the housing, and a second docking portion spaced apart from the first docking portion along the second central axis and supporting the head mount and the first head.

[0029] In one embodiment, the first docking portion can include a docking hole that receives the lower end of the housing along the second central axis, and the second docking portion can include a docking surface that is complementary to the outer peripheral surfaces of the head mount and the first head, and a guide groove that is formed in the docking surface and that guides the head mount and the first head to the docking surface.

[0030] In one embodiment, the housing can include a female charging terminal disposed at a lower end of the housing for charging the power source, and the first docking portion can include a male charging terminal configured to be electrically connected to and compressed by the female charging terminal.

[0031] In one embodiment, the cradle may include an ultraviolet light emitter positioned to emit ultraviolet light toward the first head and the second head.

[0032] In one embodiment, the cradle may include a germicidal indicator that provides information regarding the operation of the ultraviolet light emitter.

[0033] In one embodiment, the cradle can include a head cover configured to be rotatable to cover the ultraviolet light emitter and the first and second heads docked to the second docking portion, and a cover switch that detects rotation of the head cover and activates the ultraviolet light emitter and the sterilization indicator.

[0034] In one embodiment, the cradle may include a head-retaining recess positioned between the first docking portion and the second docking portion and configured to accommodate the second head or the third head.

[0035] According to at least one embodiment of the present disclosure, it is possible to provide a technology that can perform one or more skin care functions with a single device.

[0036] According to at least one embodiment of the present disclosure, it is possible to provide a technology that allows easy combination and replacement of heads that perform one or more functions.

[0037] At least one embodiment of the present disclosure can provide users with enhanced usability, enhanced operability, and a differentiated user experience. [Brief explanation of the drawings]

[0038] [Figure 1] 1 is a perspective view of an apparatus according to one embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the device shown in FIG. [Figure 3] FIG. 2 is an exploded perspective view of the housing shown in FIG. [Figure 4] 10A-10C are cross-sectional views of the top of the head mount and housing showing the head mount rotated to couple to the housing in a first orientation and a second orientation. [Figure 5] FIG. 2 is a perspective view showing the lower part of the head mount and the upper part of the housing. [Figure 6]5 is a perspective view showing the head mount coupled to the housing in the first orientation shown in FIG. 4. [Figure 7] FIG. 10 is a perspective view showing the lower part of the head mount and the upper end of the housing. [Figure 8] FIG. 2 is a cross-sectional perspective view showing a housing, a head mount, and a first head. [Figure 9] FIG. 1 is a perspective view showing a head mount, a first head, and a second head of a device according to one embodiment. [Figure 10] FIG. 10 is an exploded perspective view of the first head shown in FIG. 9. [Figure 11] FIG. 10 is an exploded perspective view of the second head shown in FIG. 9. [Figure 12] 10 is a cross-sectional view of the head mount, the first head, and the second head shown in FIG. 9. [Figure 13] FIG. 10 is a perspective view of a device according to one embodiment showing a third head attached to a first head. [Figure 14] FIG. 14 is a perspective view of the head mount, the first head, and the third head shown in FIG. 13. [Figure 15] FIG. 15 is an exploded perspective view of the third head shown in FIG. [Figure 16] FIG. 15 is a cross-sectional view of the head mount, the first head, and the third head shown in FIG. 14. [Figure 17] FIG. 2 is a block diagram that schematically illustrates components of an apparatus according to one embodiment. [Figure 18] FIG. 1 is a perspective view of an apparatus according to one embodiment including a cradle. [Figure 19] 19 is a partial perspective view of the cradle shown in FIG. 18, showing a first docking portion of the cradle. [Figure 20] 19 is a partial perspective view of the housing shown in FIG. 18, showing the lower end of the housing. [Figure 21] 19 is a partial perspective view of the cradle shown in FIG. 18 showing a second docking portion of the cradle. [Figure 22]FIG. 19 is a partial perspective view of the housing, head mount, first head, and third head shown in FIG. 18. [Figure 23] 19 is a perspective view showing a second docking portion and a head cover of the cradle shown in FIG. 18. FIG. [Figure 24] FIG. 19 is a cross-sectional view showing the longitudinal cross-sectional shape of the cradle shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0039] The embodiments of the present disclosure are presented for the purpose of explaining the technical concept of the present disclosure, and the scope of the rights of the present disclosure is not limited to the embodiments presented below or the detailed description of such embodiments.

[0040] Unless otherwise defined, all technical and scientific terms used in this disclosure include the meanings commonly understood by those skilled in the art to which this disclosure belongs. All terms used in this disclosure have been selected for the purpose of more clearly describing this disclosure, and not for the purpose of limiting the scope of rights granted by this disclosure.

[0041] As used in this disclosure, terms such as "comprising," "including," and "having" should be understood as open-ended terms that may include other embodiments, unless otherwise stated in the phrase or sentence containing such terms.

[0042] The singular terms used in this disclosure can include the plural terms unless expressly stated otherwise, and this also applies to the singular terms used in the claims.

[0043] As used in this disclosure, the terms "first," "second," etc. are used to distinguish between multiple elements and are not intended to limit the order or importance of the elements.

[0044] In this disclosure, when an element is "connected" or "coupled" to another element, it should be understood to indicate that the element can be directly connected or coupled to the other element, and also to indicate that the element can be connected or coupled to the other element through a new element.

[0045] The directional terms "upward" and "downward" used in this disclosure are based on the orientation of the device shown in FIG.

[0046] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. Similar reference numerals in the accompanying drawings indicate similar or corresponding elements. Furthermore, in the following description of the embodiments, redundant descriptions of the same or corresponding elements may be omitted. However, even if the description of an element is omitted, it is not intended that such an element be excluded in any embodiment.

[0047] The embodiments disclosed below and illustrated in the accompanying drawings relate to devices that can be used for skin care. The devices according to these embodiments can be configured to be held by a user's hand, and the user can use the devices for skin care purposes with the contact portion of the device in contact with the user's skin. As an example, the devices according to these embodiments can be used to regenerate aged collagen and elastin in skin tissue, regenerate skin cells, or effectively deliver skin care products into the skin. Although a user can use the devices according to the embodiments for skin care purposes, the target object to which the devices according to the embodiments can be applied is not limited to skin.

[0048] Figure 1 is a perspective view showing an apparatus according to one embodiment, and Figure 2 is an exploded perspective view of the apparatus shown in Figure 1. The following description will refer to Figures 1 and 2.

[0049] According to one embodiment, the device 10 includes a housing 100, a head mount 200 configured to couple to the housing, a first head 300 configured to be removably attached to the head mount, and a second head 400 configured to be removably attached to the first head. The device 10 further includes a controller configured to control the first head 300, the second head 400, and device components that can be attached within the housing 100. The first head 300 and the second head 400 can contact a target object (e.g., a user's skin) to perform a skin care function. The housing 100 and the head mount 200 coupled together can form a single module. The first head 300 attached to the head mount 200 can form a single module, and the second head 400 attached to the first head can also form a single module.

[0050] The housing 100 is a portion that a user can hold when using the device 10. The housing 100 is an outer member of the device 10 and houses components that function to operate the device within its interior space. According to one embodiment of the device, the housing 100 includes a front housing 130 and a rear housing 140. The front housing and the rear housing are coupled to each other to form the interior space of the housing 100. The housing 100 is formed in a generally cylindrical shape and thus defines two longitudinal ends. A head mount 200 is coupled to one longitudinal end 111 of the housing. In the following description, the end 111 to which the head mount is coupled is referred to as the upper end, and the end opposite the upper end 111 in the longitudinal direction is referred to as the lower end 112.

[0051] The housing 100 includes a mounting plate 120 formed on an upper end 111. The head mount 200 is rotatably coupled to the housing's mounting plate 120. The upper end of the front housing 130 and the upper end of the rear housing 140 can be coupled to each other to form the housing's mounting plate 120.

[0052] The first head 300 is attached to the head mount 200. The head mount 200 supports the first head 300 and can connect the first head 300 to the housing 100. The head mount 200 can be cylindrical and have a first central axis CA1. The first central axis CA1 can refer to an imaginary axis passing through the center of the cross-sectional shape of the head mount 200. The head mount 200 can be coupled to the upper end 111 of the housing. According to one embodiment of the device, the head mount 200 can be coupled to the upper end 111 of the housing so as to rotate around the first central axis CA1. Furthermore, according to one embodiment of the device, the head mount 200 can be coupled to the upper end 111 of the housing so that the first central axis CA1 is parallel to a second central axis CA2 of the housing 100, or so that the first central axis CA1 is inclined relative to the second central axis. The second central axis CA2 of the housing 100 can refer to an imaginary axis passing through the center of the mounting plate 120 in the longitudinal direction of the housing.

[0053] Power for operation of the first head 300 can be supplied to the first head through the head mount 200. The head mount 200 can include a first connector 240, and the first head 300 can include a second connector, so that the head mount 200 can be electrically connected to the first head 300. The first connector 240 can be located on the upper surface of the head mount 200 and can be a male connector. The second connector can be located on the lower surface of the first head 300 to correspond to the first connector 240 and can be a female connector.

[0054] As an example, the first connector 240 can be a pogo pin connector, and the second connector of the first head 300 can be a connector having terminals that can contact each pogo pin of the pogo pin connector. Each pogo pin 241 of the pogo pin connector can include a cylindrical barrel, a spring inserted into the barrel, and a plunger coupled to one end of the barrel and compressed by the spring so as to move along the barrel. Therefore, when the first connector 240 and the second connector are coupled, the plunger of the pogo pin can be elastically compressed toward the inside of the barrel. Because the first connector 240 can be configured as a pogo pin connector, coupling and decoupling between the head mount 200 and the first head 300 can be easily performed. When the first head 300 is detachably attached to the head mount 200, the first connector 240 and the second connector are electrically connected to each other. Therefore, the first head 300 can be electrically connected to the head mount 200 and power can be supplied to the first head 300 through the head mount 200 .

[0055] The first head 300 is detachably attached to the head mount 200 along a first central axis CA1. When the device is not in use, the first head 300 can be removed from the head mount 200. The first head 300 includes a first contact portion 310 that contacts a target object (e.g., a user's skin) when the device is in use. The first head 300 can include an electronic element capable of performing a skin care function, and the first contact portion 310 can include a surface of such an electronic element. According to one embodiment of the device, the first contact portion 310 can be located at an upper end of the first contact portion 310 and can include an ultrasonic element 311. An ultrasonic wave applying surface of the ultrasonic element 311 can form the first contact portion 310.

[0056] The second head 400 is detachably attached to the first head 300 along the first central axis CA1. When the device is not in use, the second head 400 can be detached from the first head 300. The second head 400 includes a second contact portion 410 that contacts the target object when the device is in use. The second head 400 is formed in an annular shape so as to surround the first contact portion 310 of the first head in the circumferential direction CD of the first central axis CA1. Furthermore, the second contact portion 410 is formed so as to contact the target object together with the first contact portion 310 when the device is in use. Specifically, when the second head 400 is attached to the first head 300, the first contact portion 310 of the first head and the second contact portion 410 of the second head are positioned concentrically about the first central axis CA1 and can both contact the target object. Therefore, when the device is in use, the concentrically arranged first contact portion 310 and second contact portion 410 both come into contact with the target object, and the skin care effects contained in the first head and second head can be simultaneously performed on the target object.

[0057] The second head 400 may include an electrode that performs a skin care function, and the second contact portion 410 may include a surface of such an electrode. According to one embodiment of the device, the second contact portion 410 may be located at the upper end of the second head 400 and may include a first electrode 411 configured to apply radio waves to a target object.

[0058] The second head 400 can be supplied with power for operation through the first head 300. The first head 300 can include a third connector 360, and the second head 400 can include a fourth connector, so that the first head 300 can be electrically connected to the second head 400. The third connector 360 is electrically connected to the second connector of the first head. The third connector 360 can be disposed on the surface of the first head 300, spaced apart from the first contact portion 310. The fourth connector can be disposed on the underside of the second head 400 to correspond to the third connector 360. The third connector 360 can be the pogo pin connector described above and can include pogo pins 361 identical to the pogo pins 241. The fourth connector can be a connector having terminals that can contact each of the pogo pins 361 of the third connector. The third connector 360 can be configured as a pogo pin connector, which allows easy coupling and separation between the first head 300 and the second head 400. When the second head 400 is detachably attached to the first head 300, the third connector 360 and the fourth connector are electrically connected to each other, and the second head 400 is electrically connected to the first head 300. Power can be supplied to the second head 400 through the head mount 200 and the first head 300.

[0059] Fig. 3 is an exploded perspective view of the housing shown in Fig. 1. The following description will refer to Fig. 3.

[0060] The device includes a power supply configured to provide power to operate the device. The power supply can be located external to the device 10 and connected to the device through an adapter. Alternatively, the power supply can be located inside the housing 100. In one embodiment, the device includes a power supply 170 located inside the housing 100. The power supply 170 can be a rechargeable battery. Alternatively, the power supply 170 can be a replaceable battery. A device including the power supply 170 inside the housing 100 is portable. The power supply 170 is configured to provide power to the first head and the second head. Furthermore, the power supply 170 is configured to provide power to electrical components located within the housing 100. The power supply 170 can be electrically connected to and controlled by a controller.

[0061] A charging port 146 for charging the power source 170 may be attached to the lower end of the housing 100. For example, the charging port 146 may have a USB-C type terminal. The charging port 146 may be fixed to the rear housing 140 so as to communicate with the lower end of the rear housing 140. Furthermore, the device 10 may include a charging indicator 171 that indicates the charging status of the power source 170. The charging indicator 171 may be fixed to the inner circumferential surface of the front housing 130 and controlled by the controller. For example, the charging indicator 171 may include a light-emitting diode that can indicate the charging status.

[0062] The device includes a controller 600 that controls the operation of electrical components of the device. As an example, the controller 600 may include a circuit board, a processing processor mounted on the circuit board, and a plurality of circuits formed on the circuit board, connected to the processing processor, and configured to perform respective functions of the device. The controller 600 may be disposed inside the housing 100. Alternatively, a portion of the controller 600 may be disposed inside the first head and inside the second head. The controller 600 is electrically connected to the power source 170. The controller 600 is electrically connected to a first connector of the head mount.

[0063] The housing 100 includes a counter electrode 180 disposed on the outer periphery of the housing. In one embodiment, the pair of counter electrodes 180 are disposed between the front housing 130 and the rear housing 140 and exposed to the outside of the housing 100. The counter electrode 180 is formed of a metallic material and can function as an electrode that applies a current to a target object for iontophoresis. The counter electrode 180 can be electrically connected to the controller 600. When a user holds the housing 100, the counter electrode 180 can come into contact with the user's hand. Each of the counter electrodes 180 has an engaging portion consisting of a pair of engaging hooks 181. The rear housing 140 has an engaging groove 145 on its inner periphery that engages with one of the pair of engaging hooks 181. The front housing 130 has an engaging groove on its inner periphery that corresponds to the engaging groove 145 and engages with the other of the pair of engaging hooks 181. The pair of engagement hooks 181 are coupled to engagement grooves in the front housing 130 and rear housing 140 , respectively, thereby positioning the counter electrode 180 between the front housing 130 and rear housing 140 .

[0064] The device according to one embodiment includes a display 710 disposed on the housing 100. By way of example, the display 710 may be an LCD and may be secured to the housing 130 so as to be exposed outside the front housing 130. The display 710 may be a touch screen display capable of receiving input from a user. The display 710 is controlled by the controller 600 and is configured to display information regarding the operating status of the device.

[0065] The device according to one embodiment includes a speaker 720 disposed inside the housing 100 and controlled by the controller 600. The speaker 720 may be attached to the controller 600, and a sound hole 137 may be formed in the front housing 130 to accommodate the speaker. The speaker 720 is configured to emit information about the operating status of the device by sound, such as voice. Thus, a user can receive information about the operation of the device by voice guidance when attempting to use the device or while using the device.

[0066] The device according to one embodiment includes a memory card reader 730 disposed inside the housing 100 and connected to the controller 600. The memory card reader 730 is configured to receive a memory card (e.g., an SD card). The memory card reader 730 can be fixed to the rear housing 140 so as to communicate with the lower end of the rear housing 140. The rear housing 140 can have a card slot through which a memory card can be inserted into the memory card reader 730 and a cover that covers the card slot. The memory card can store information regarding the operation of the first head and the second head. Furthermore, the memory card can also store information regarding the operation of an additional head that can be attached to the first head.

[0067] The mounting plate 120, to which the head mount is rotatably attached, can be positioned so as to be perpendicular to the second central axis CA2 of the housing. Alternatively, the mounting plate 120 can be positioned so as to be inclined relative to the second central axis CA2. In one embodiment, the mounting plate 120 is formed by joining the upper ends of the front housing 130 and the rear housing 140 together, and is formed so as to be inclined at a predetermined inclination angle TA relative to the second central axis CA2.

[0068] The front housing 130 and the rear housing 140 may be combined to form the housing 100 of the device. The front housing 130 may include a front mounting plate 131 disposed at an upper end of the front housing. The front mounting plate 131 may be formed integrally with the front housing 130. The rear housing 140 may include a rear mounting plate 141 disposed at an upper end of the rear housing. The rear mounting plate 141 may be formed integrally with the rear housing 130. When the front housing 130 and the rear housing 140 are combined, the front mounting plate 131 and the rear mounting plate 141 may be combined to form the mounting plate 120. The mounting plate 120 may rotatably support a head mount. The front mounting plate 131 and the rear mounting plate 141 are inclined at an inclination angle TA with respect to the second central axis CA2.

[0069] The front mounting plate 131 includes a semicircular front bearing hole 132 that supports the head mount's rotation shaft and a pair of front detents 133 formed on the inner end of the front mounting plate. The rear mounting plate 141 includes a semicircular rear bearing hole 142 that supports the head mount's rotation shaft and a pair of rear detents 143 formed on the inner end of the rear mounting plate. When the front and rear housings 130 and 140 are assembled, the front and rear bearing holes 132, 142 form a single bearing hole 121 (see FIG. 2) that supports the head mount's rotation shaft, and the front and rear detents 133, 143 form a detent 122 (see FIG. 2) for positioning the head mount.

[0070] The front mounting plate 131 includes a key protrusion 134 on its outer circumferential surface, and the rear mounting plate 141 includes a key protrusion 144 on its outer circumferential surface. The housing 100 includes a sleeve ring 150 that secures the upper ends of the assembled front and rear housings 130 and 140 together, allowing each mounting plate to sandwich the rotation shaft of the head mount. The sleeve ring 150 includes key grooves 151 on its inner circumferential surface into which the key protrusions 134 and 144 fit. The sleeve ring 150 is coupled to the upper ends of the assembled front and rear housings 130 and 140, preventing the front and rear mounting plates 131 and 141 from separating and allowing the front and rear mounting plates 131 and 141 to sandwich the rotation shaft of the head mount.

[0071] The mounting plate 120, which is inclined relative to the second central axis CA2, allows the head mount to be coupled to the upper end of the housing in a direction inclined relative to the second central axis CA2 and a direction parallel to the second central axis CA2. Hereinafter, the direction inclined relative to the second central axis will be referred to as the first direction, and the direction parallel to the second central axis will be referred to as the second direction. The head mount is coupled to the mounting plate 120 so as to rotate around the first central axis. The head mount that rotates around the first central axis is coupled to the upper end of the housing in either the first direction or the second direction.

[0072] Rotation of the head mount in the first direction or the second direction will now be described with reference to Figure 4. Figure 4 is a cross-sectional view showing the head mount and the top of the housing, and further showing the respective directions of the head mount as it rotates.

[0073] The head mount 200 includes a first cover 210 that forms the outer periphery and top of the head mount, and a second cover 220 that forms the bottom of the head mount. The first connector 240 is disposed on the top of the first cover 210. A positioning hole 211 is formed in the top of the first cover 210, into which a positioning pin of the first head 300 (e.g., positioning pin 322 shown in FIG. 12 ) can be inserted. The second cover 220 is inclined at an inclination angle TA with respect to the first central axis CA1 of the head mount and the second central axis CA2 of the housing. The second cover 220 includes a rotating shaft 221 that protrudes toward the inside of the housing 100, an engaging flange 222 that protrudes from the rotating shaft 221 along the circumference of the rotating shaft, and a coupling groove 226 formed above the engaging flange 222 along the circumference of the rotating shaft. The rotation shaft 221 protrudes from the second cover 220 so as to be perpendicular to the mounting plate 120. Portions of the front mounting plate 131 and the rear mounting plate 141 that define the bearing hole 121 are inserted into the coupling groove 226, and the front mounting plate 131 and the rear mounting plate 141 sandwich the rotation shaft. Thus, the head mount is coupled to the housing's mounting plate 120 so as to rotate around the first central axis CA1. When using the device, the user can rotate the head mount 200 around the first central axis CA1. As the head mount 200 rotates, it is coupled to the mounting plate 120 in the first direction TD and the second direction ED.

[0074] The left portion of Figure 4 shows that head mount 200 rotates about first central axis CA1 to couple to mounting plate 120 in second direction ED. When head mount 200 couples to mounting plate 120 in second direction ED, first central axis CA1 is parallel to or coaxial with second central axis CA2. When head mount 200 is positioned in second direction ED, head mount 200 and housing 100 are positioned in a generally straight line. When head mount 200 is positioned in second direction ED, the device can be in an unused state, and a first head can be attached to the head mount. The right portion of Figure 4 shows that head mount 200 rotates about first central axis CA1 to couple to mounting plate 120 in first direction TD.

[0075] Mounting plate 120 is inclined at tilt angle TA relative to second central axis CA2, and second cover 220 is inclined at tilt angle TA relative to second central axis CA2. Therefore, as head mount 200 rotates from second direction ED to first direction TD, first central axis CA1 of the head mount gradually tilts from second central axis CA2. When head mount 200 is coupled to mounting plate 120 in first direction TD, first central axis CA1 tilts at tilt angle TA relative to second central axis CA2.

[0076] When the head mount 200 is coupled to the mounting plate 120 in the second direction ED, the upper portion of the first cover 210 is positioned perpendicular to the second central axis CA2. When the head mount 200 is coupled to the mounting plate 120 in the first direction TD, the upper portion of the first cover 210 is tilted at an inclination angle TA relative to the second central axis CA2. When the head mount 200 is positioned in the first direction TD, the device can be in use. When the head mount 200 is coupled in the first direction TD, the first central axis CA1 is tilted relative to the second central axis CA2. Therefore, a first head can be attached to the head mount tilted relative to the housing 100 and tilted relative to the second central axis CA2. Furthermore, a second head can be attached to the tilted first head.

[0077] According to one embodiment, the device can be configured to provide power to the first head and the second head when the head mount 200 is rotated in one direction about the first central axis CA1 (e.g., counterclockwise about the first central axis) to couple to the mounting plate 120 in a first direction TD. When a user rotates the head mount 200 to position the head mount 200 in the first direction TD, the device can switch to a power-on state in which power is provided to the components of the device. When a user rotates the head mount 200 in the opposite direction (e.g., clockwise about the first central axis) to position the head mount 200 in an orientation different from the first direction TD, the device can switch to a power-off state, cutting off power to the components.

[0078] The controller can control switching between a power-on state and a power-off state. The controller is configured to supply power to the first head and the second head when it detects that the head mount 200 is coupled to the mounting plate 120 in the first direction TD. Furthermore, the controller is configured to supply power to other electrical components (e.g., the display 710, the speaker 720, etc.) provided in the housing 100 other than the first head and the second head when it detects that the head mount 200 is coupled to the mounting plate 120 in the first direction TD. The controller connected to the power source 170 can enable power to be supplied from the power source 170 to the first head, the second head, and other electrical components. Furthermore, the controller is configured to cut off power supplied to the first head, the second head, and other electrical components when it detects that the head mount 200 is no longer coupled to the mounting plate 120 in the first direction TD.

[0079] In this manner, the controller detects the position of the head mount in the first direction TD according to the rotation of the head mount 200 and supplies and cuts off power to the electrical components of the device. Therefore, because the device 10 can be switched between a power-on state and a power-off state simply by rotating the head mount 200, a user can easily change the power-on and power-off states of the device. Furthermore, because the power-on and power-off states are switched solely by rotating the head mount 200, the device housing 100 does not require a power button, and therefore the housing 100 can have a button-less appearance.

[0080] According to one embodiment of the device, housing 100 can include a sensor or switch, and head mount 200 can include an operating portion for operating such a sensor or switch by rotating the head mount. The controller can detect coupling of head mount 200 to mounting plate 120 in first direction TD based on a detection signal of the sensor or switch.

[0081] In this regard, reference is made to Figure 5, which shows the lower part of the head mount and the upper part of the housing, in a perspective view.

[0082] The housing 100 includes a detection switch 160 disposed therein. The detection switch 160 can be fixed to an inner circumferential surface of the front housing 130. The detection switch 160 can include a limit switch. The detection switch 160 is configured to send a detection signal to the controller 600 when the head mount 200 is coupled to the mounting plate 120 in a first direction TD. When the head mount 200 rotates around the first central axis CA1, the detection switch 160 can detect the position of the head mount in the first direction and send a detection signal to the controller.

[0083] The head mount 200 includes a switch operating portion 227 that can turn on or off the detection switch 160 by rotating the head mount about the first central axis CA1. The switch operating portion 227 can be formed as a pin that is disposed within the engagement flange 222 of the rotating shaft 221 and protrudes downward.

[0084] When head mount 200 rotates in one direction (e.g., counterclockwise about the first central axis) and is coupled to mounting plate 120 in first direction TD, switch operating portion 227 can press switch terminal 161 of detection switch 160. In response, detection switch 160 detects that head mount 200 has been coupled to mounting plate 120 in first direction TD and transmits a detection signal to the controller. The controller supplies power to each component of the device based on the detection signal of detection switch 160.

[0085] The engagement flange 222 of the rotary shaft has a concave edge 223 formed along the circumference of the engagement flange 222 and recessed toward the center of the rotary shaft 221. The concave edge 223 is formed over approximately half of the engagement flange 222. Both ends of the concave edge 223 form a first stepped portion 224 and a second stepped portion 225, respectively. The first and second stepped portions 224 and 225 protrude toward the center of the rotary shaft 221. A switch operating portion 227 is located adjacent to the first stepped portion 224 and protrudes from the engagement flange 222. The front housing 130 of the housing includes a stopper 136 protruding from the inner circumferential surface of the front housing, and the first stepped portion 224 and second stepped portion 225 of the engagement flange engage with the stopper 136. Stopper 136 is positioned such that second stepped portion 225 engages stopper 136 when head mount 200 is coupled to the mounting plate in second direction ED. Alternatively, stopper 136 is positioned such that first stepped portion 224 engages stopper 136 when head mount 200 is coupled to the mounting plate in first direction TD.

[0086] When the head mount 200 rotates in one direction as described above and is coupled to the mounting plate in the first direction TD, the switch operating portion 227 presses against the switch terminal 161 of the detection switch 160, causing the detection switch 160 to send a detection signal to the controller. Furthermore, when the head mount 200 is coupled to the mounting plate in the first direction TD, the first stepped portion 224 engages with the stopper 136, preventing further rotation of the head mount 200. When the head mount 200 rotates in the opposite direction as described above, the switch terminal 161 of the detection switch 160 is released, causing the detection switch 160 to not send a detection signal to the controller. Therefore, the controller can detect that the coupling of the head mount 200 in the first direction TD has been released. When the head mount 200 rotates in the opposite direction as described above and is coupled to the mounting plate in the second direction ED, the second stepped portion 225 engages with the stopper 136, preventing further rotation of the head mount 200.

[0087] Refer to FIG. 6, which shows the head mount coupled to the housing in a first direction. FIG. 6 is a perspective view showing the head mount coupled to the housing in the first direction shown in FIG. 4. The head mount 200 is coupled to the mounting plate in a first direction TD, and the first central axis CA1 is tilted at an inclination angle TA relative to the second central axis CA2. Thus, the first head 300 can be attached to the head mount 200 in a tilted state at the inclination angle TA, and the second head 400 can be attached to the first head 300 along the first central axis CA1. The first head 300 and the second head 400, tilted relative to the second central axis CA2 of the housing, can be applied to the target object (the user's skin) at an ergonomic angle.

[0088] 7 is a perspective view showing the lower part of the head mount and the upper end of the housing. An apparatus according to one embodiment can fix the position of the head mount when the head mount is coupled to the mounting plate in a first direction and a second direction. In this regard, reference is made to FIG. 7, which shows the lower part of the head mount and the upper end of the housing.

[0089] The head mount 200 includes a ball 250 that is resiliently pressed toward the mounting plate 120. The ball 250 is positioned to protrude toward the coupling groove 226 of the second cover 220 and is resiliently pressed toward the mounting plate 120 by a spring. The mounting plate 120 includes a pair of detents 122 into which the ball 250 is releasably inserted. The front detents 133 of the front mounting plate and the rear detents 143 of the rear mounting plate are assembled to form the detents 122 of the mounting plate. The pair of detents 122 are located opposite each other with respect to the second central axis CA2. The pair of detents 122 are positioned within the mounting plate 120 such that the ball 250 is releasably inserted into the detents 122 when the head mount 200 is coupled to the mounting plate 120 in the first direction TD or the second direction ED. When the user rotates head mount 200 about first central axis CA1 in one direction as described above, and head mount 200 couples to the mounting plate in first direction TD, ball 250 is inserted into detent 122. Furthermore, when the user rotates head mount 200 about first central axis CA1 in the opposite direction as described above, and head mount 200 couples to the mounting plate in second direction ED, ball 250 is inserted into detent 122. Thus, the coupling of ball 250 and detent 122 can secure head mount 200 to mounting plate 120 in first direction TD or second direction ED, and the user can feel a tactile sensation associated with the rotational position of head mount 200.

[0090] The first head is removably attached to the head mount. The first head can be securely attached to the head mount with the head mount attached. In this regard, reference is made to Figure 8, which is a cross-sectional perspective view showing the housing, the head mount, and the first head.

[0091] The head mount 200 includes a locking latch 230 for securing the first head 300 to the head mount. The first head 300 includes a locking groove 321 to which the locking latch 230 is releasably coupled. The locking latch 230 is disposed within the first cover 210 so as to be movable toward the first central axis CA1. The locking latch 230 is elastically compressed toward the first central axis CA1 by a spring. The locking latch 230 includes an engagement hook 231, which is releasably coupled to the locking groove 321 of the first head 300. For example, when the first head 300 is attached to the head mount 200 along the first central axis CA1, a portion of the first head that forms the locking groove 321 causes the engagement hook 231 to move toward the first central axis CA1 and be coupled to the locking groove 321 by the force of the spring. The engaging hooks 231 are coupled to the locking grooves 321 to fix the first head 300 to the head mount 200 , so that the first head 300 can be fixed and attached to the head mount 200 .

[0092] The locking latch 230 includes a push button 232 arranged on the outer circumferential surface of the head mount 200. The push button 232 is exposed on the first cover 210 of the head mount and contacts the engagement hook 231. When a user presses the push button 232 toward the first central axis CA1, the locking latch 230 can move toward the first central axis CA1. Therefore, the engagement hook 231 can be released from the locking groove 321, and the first head 300 can be removed from the head mount 200.

[0093] Fig. 9 is a perspective view showing a head mount, a first head, and a second head of a device according to one embodiment. Fig. 10 is an exploded perspective view of the first head shown in Fig. 9, and Fig. 11 is an exploded perspective view of the second head shown in Fig. 9. The following description will refer to Figs. 9 to 11.

[0094] The first head 300 is removably attached to the head mount 200 and supports the second head 400. The second head 400 is removably attached to the first head 300. When the second head 400 is attached to the first head 300, the first contact portion 310 of the first head and the second contact portion 410 of the second head can both contact a target object (e.g., a user's skin). According to one embodiment of the device, the first contact portion 310 is inserted into the second head 400 so that the first contact portion 310 and the second contact portion 410 can both contact the target object.

[0095] The first head 300 includes a disk 320 detachably attached to the head mount 200 and a shaft 330 protruding from the disk along a first central axis CA1. The first contact portion 310 is disposed at an end of the shaft 330 spaced apart from the disk 320 along the first central axis CA1. The first contact portion 310 disposed at the end of the shaft 330 constitutes a protruding end 331 of the first head 300 formed within the shaft. The first contact portion 310 is disposed at the protruding end 331 of the first head and contacts the target object.

[0096] The disk 320 has a disk cover 323 that forms the bottom of the disk. A second connector 350 can be coupled to the disk cover 323. A first head circuit board 370, which is part of the controller, is disposed inside the disk 320, and the second connector 350 is electrically connected to the first head circuit board 370.

[0097] The second head 400 is formed in a ring shape. The second head 400 includes a first through-hole 420 along a first central axis CA1, into which the shaft 330 is inserted. The first through-hole 420 penetrates the second head 400 along the first central axis CA1. The second head 400 includes a first annular body 430 that is seated or disposed on the disk 320 of the first head. The inner circumferential surface of the first annular body 430 forms the first through-hole 420. The first annular body 430 includes an upper end 431 formed along the circumference of the first through-hole 420. The second contact portion 410 of the second head forms the upper end 431 of the first annular body. Therefore, the second contact portion 410 is formed along the circumference of the first through-hole 420.

[0098] In one embodiment of the device, the first annular body 430 of the second head includes a first annular housing 432, a first bottom cover 433 that defines a first through-hole 420 and is coupled to the first annular housing 432, and a first top cover 434 that forms the upper end of the first annular body 430. The above-mentioned fourth connector 450 is coupled to the first bottom cover 433. A second head circuit board 470 can be disposed within an internal space defined by the first annular housing 432, the first bottom cover 433, and the first top cover 434. The second head circuit board 470 can be part of the above-mentioned controller.

[0099] When the second head 400 is attached to the first head 300, the shaft 330 passes through the first through-hole 420, and both the first contact portion 310 and the second contact portion 410 form the portion of the device that contacts the target object. The shaft 330 protrudes from the center of the disk 320, and the first annular body 430 has a shape corresponding to the shape of the disk 320. Therefore, when the second head 400 is attached to the first head 300, the first contact portion 310 located at the protruding end 331 of the first head and the second contact portion 410 located at the upper end of the second head 400 are arranged concentrically with respect to the first central axis CA. Specifically, when the second head 400 is attached to the first head 300, the second contact portion 410 surrounds the first contact portion 310 around the first central axis CA1. The device can simultaneously perform the actions that each head brings to the target object by virtue of the arrangement of the first and second contact portions described above.

[0100] When the second head 400 is attached to the first head 300, the second head 400 can be fixed so as not to come off from the first head 300 along the first central axis CA1. The first head 300 includes a first magnet 340 disposed inside the disk 320, and the second head 400 includes a second magnet 440 disposed inside the first annular body 430 so as to correspond to the first magnet. When the second head 400 is attached to the first head 300, a magnetic attraction force is generated by the first magnet 340 and the second magnet 440, which prevents the second head 400 from coming off from the first head 300 along the first central axis CA1. Instead of the magnetic attraction force, a mechanical fastening structure can be provided on the first head and the second head to prevent the second head 400 from coming off along the first central axis CA1.

[0101] When the second head 400 is attached to the first head 300, the second head 400 can be fixed on the first head 300 so as not to rotate around the first central axis CA1. The shaft 330 of the first head includes a key 332 on the outer circumferential surface of the shaft, and the first through hole 420 of the second head includes a key groove 421 on the inner circumferential surface of the first through hole. The key 332 and the key groove 421 are formed along the first central axis CA1, and the key 332 can be inserted into the key groove 421. Therefore, inserting the key 332 into the key groove 421 prevents the second head 400 from rotating. For example, the key 332 and the key groove 421 can be formed in the shape of an isosceles triangle.

[0102] Fig. 12 is a cross-sectional view of the head mount, the first head, and the second head shown in Fig. 9. In the following description, Figs. 10 to 12 will be referred to.

[0103] In one embodiment of the device, the first head 300 is configured to apply ultrasound waves for sonophoresis to the target object. Sonophoresis can refer to the action of ultrasound waves penetrating the skin and delivering skin care products into the skin tissue. The ultrasonic energy applied to the target object can cause cavitation of the skin tissue, an increase in the temperature of the skin tissue, etc., to help the skin care products be absorbed into the lipid layer of the skin tissue.

[0104] The first contact portion 310 of the first head includes an ultrasonic element 311 for applying ultrasonic waves to a target object for sonophoresis. The ultrasonic element 311 can generate ultrasonic waves through the piezoelectric effect. The ultrasonic element 311 is disposed at the protruding end 331 of the shaft, and an ultrasonic application surface of the ultrasonic element 311 can form the first contact portion 310. The ultrasonic element 311 is controlled by a controller, and power can be supplied to the ultrasonic element from a power source. A portion of the ultrasonic element 311 can be mounted on the first head circuit board 370.

[0105] In one embodiment of the device, the second head 400 is configured to alternately apply radio waves to the target object. Specifically, the second contact portion 410 of the second head includes a first electrode 411 configured to alternately apply radio waves (RF) to the target object. When the second head 400 is attached to the first head 300, both the first contact portion 310 and the second contact portion 410 contact the target object (e.g., the user's skin). The first contact portion 310 can apply ultrasound to the target object, while the second contact portion 410 can alternately apply radio waves to the target object.

[0106] Ultrasound applied to the skin can induce changes in protein functional activity and increase the elasticity of collagen fibers. Alternately, radio waves applied to the skin can break hydrogen bonds in the dermis layer of the skin through bulk heating, regenerating aged collagen or elastin. The combination of ultrasound and radio waves promotes the regeneration of aged collagen or elastin.

[0107] The first electrode 411 of the second contact portion 410 includes a pair of electrodes and is therefore formed as a bipolar type. One of the first electrodes 411 can be a positive electrode, and the other of the first electrodes 411 can be a ground electrode. The positive first electrode 412 can emit high-frequency radio wave energy to the target object, and the emitted high-frequency energy can return to the ground first electrode 413. The second head 400 can be configured to alternately apply two radio waves having different frequencies from the first electrode 411 to the target object.

[0108] The pair of first electrodes 412 and 413 are formed to be positioned opposite each other with respect to the first central axis CA1. Each of the pair of first electrodes 412 and 413 is formed in an arc shape so as to surround a portion of the ultrasonic element 311 in the circumferential direction CD of the first central axis CA1. Each of the first electrodes 411 is formed in a roughly semicircular arc shape and can surround roughly half of the ultrasonic element 311. Because the pair of first electrodes 411 are arranged to surround the ultrasonic element 311, high-frequency radio wave energy can act on a target object within a range roughly defined by the pair of first electrodes 411.

[0109] An electrode hole 435 in which the first electrode 411 is seated is formed in the first top cover 434. The first electrode 411 can be fixed to the first bottom cover 433 while seated on the electrode hole 435. A seal member 436 is disposed between the first electrode 411 and the electrode hole 435. The first electrode 411 can be electrically connected to the second head circuit board 470 via a spring 414.

[0110] In one embodiment of the device, the second contact portion 410 of the second head can apply red light to the target object. The red light can have effects such as skin tissue regeneration and anti-inflammation. A light-emitting diode emitting red light can be attached to the second head circuit board 470 inside the second head. The red light emitted by the red light-emitting diode can be applied to the target object through the first top cover 434. Therefore, the second contact portion 410 of the second head can include a light transmission portion for applying the red light to the target object. The light transmission portion can be formed as part of the first top cover 434, which is formed between the first electrode 411 and the periphery of the first through-hole 420.

[0111] According to one embodiment of the device, the second head attached to the first head can be replaced with an additional head that performs a different function than the second head. In one embodiment of the device, the first head is first attached to the head mount, and an additional head is selectively attached to the first head. The head attached to the first head can be referred to as the second head. The additional head attached to the first head in place of the second head can be referred to as the third head.

[0112] For example, if a user desires the functions included in the first head and the second head, the second head can be attached to the first head and the first and second heads can be used in combination. If a user desires the functions included in the first head and the third head, the third head can be attached to the first head and the first and third heads can be used in combination. Thus, the second head and the third head can be detachably and selectively attached to the first head.

[0113] Fig. 13 is a perspective view showing a third head attached to the first head of a device according to one embodiment. Referring to Fig. 13, a device 10 according to one embodiment includes a third head 500 configured to be detachably attached to the first head 300. The controller described above is configured to control the third head 500. When the third head 500 is attached to the first head 300, the first head and the third head can contact a target object (e.g., a user's skin) to apply ultrasound and current for skin care.

[0114] The third head 500 is detachably attached to the first head 300 along the first central axis CA1. When the device is not in use, the third head 500 can be detached from the first head 300. The third head 500 includes a third contact portion 510 that contacts the target object when the device is in use. The third contact portion 510 is formed in an annular shape so as to surround the first contact portion 310 of the first head in the circumferential direction CD of the first central axis CA1. Furthermore, the third contact portion 510 is formed so as to contact the target object together with the first contact portion 310 when the device is in use. Specifically, when the third head 400 is attached to the first head 300, the first contact portion 310 and the third contact portion 510 are arranged concentrically with respect to the first central axis CA1 and can both contact the target object. Therefore, when the device is in use, the skin care effects included in the first head and the third head can be simultaneously performed on the target object.

[0115] The third head 500 can include an electrode capable of performing a skin care function, and the third contact portion 510 can include a surface of the electrode. According to one embodiment of the device, the third contact portion 410 can be disposed on the top end of the third head 400 and can include a second electrode 511 and a third electrode 515 configured to apply a current to the target object.

[0116] Fig. 14 is a perspective view of the head mount, the first head, and the third head shown in Fig. 13. Fig. 14 will be referred to in the following description.

[0117] Power for operation of the first head 300 can be supplied to the first head through the head mount 200. The third head can include a fifth connector corresponding to the third connector 360 of the first head so that the first head 300 and the third head 500 can be electrically connected. The fifth connector can be disposed on the underside of the second head 400 so as to correspond to the third connector 360. The fifth connector can be a connector having terminals that can contact each of the pogo pins of the third connector 360 configured as a pogo pin connector. Because the third connector 360 can be configured as a pogo pin connector, the first head 300 and the third head 500 can be easily coupled and separated. When the third head 400 is detachably attached to the first head 300, the third connector 360 and the fifth connector are electrically connected to each other, and the third head 500 is electrically connected to the first head 300. The third head 500 can be supplied with power from a power source through the head mount 200 and the first head 300 under the control of the controller.

[0118] Fig. 15 is an exploded perspective view of the third head shown in Fig. 14, and Fig. 16 is a cross-sectional view of the head mount, first head, and third head shown in Fig. 14. In the following description, Figs. 14 to 16 will be referred to.

[0119] The third head 500 is detachably attached to and supported by the first head 300. The third head 500 is formed in a ring shape. According to one embodiment of the device, the first contact portion 310 is inserted into the third head 400 so that both the first contact portion 310 and the third contact portion 510 can contact the target object.

[0120] The third head 500 includes a second through-hole 520 through which the shaft 330 of the first head is inserted along the first central axis CA1. The second through-hole 520 penetrates the third head 500 along the first central axis CA1. The third head 500 includes a second annular body 530 that is seated or disposed on the disk 320 of the first head. The inner circumferential surface of the second annular body 530 forms the second through-hole 520. The second annular body 530 includes an upper end 531 formed along the circumference of the second through-hole 520. A third contact portion 510 of the third head forms the upper end 531 of the second annular body. Therefore, the third contact portion 510 is formed along the circumference of the second through-hole 520.

[0121] When the third head 500 is attached to the first head 300, the shaft 330 passes through the second through-hole 520, and both the first contact portion 310 and the third contact portion 510 form portions of the device that contact the target object. The shaft 330 protrudes from the center of the disk 320, and the second annular body 530 has a shape corresponding to the shape of the disk 320. Therefore, when the third head 500 is attached to the first head 300, the first contact portion 310 located at the protruding end 331 of the first head and the third contact portion 510 located at the upper end 531 of the third head 500 are arranged concentrically with respect to the first central axis CA. Specifically, when the third head 500 is attached to the first head 300, the third contact portion 510 is configured to surround the first contact portion 310 around the first central axis CA1. The device can simultaneously perform the action of each head on the target object by the arrangement of the first and third contact portions described above.

[0122] When the third head 500 is attached to the first head 300, the third head 500 can be fixed so as not to come off from the first head 300 along the first central axis CA1. The third head 500 includes a third magnet 540 arranged inside the second annular body 530 to correspond to the first magnet 340 of the first head. When the third head 400 is attached to the first head 300, a magnetic attractive force is generated by the first magnet 340 and the third magnet 540, and this magnetic attractive force can prevent the third head 500 from coming off from the first head 300 along the first central axis CA1.

[0123] When the third head 400 is attached to the first head 300, the third head 500 can be fixed so as not to rotate on the first head 300 around the first central axis CA1. The second through-hole 520 of the third head includes a key groove 521 formed on its inner circumferential surface along the first central axis CA1. The key 332 of the first head is inserted into the key groove 521, thereby preventing the third head 500 from rotating.

[0124] The first contact portion 310 of the first head includes an ultrasonic element 311 to apply ultrasound waves for sonophoresis to the target object. In one embodiment of the device, the third head 500 can be configured to apply a first current for electroporation and a second current for iontophoresis to the target object. Specifically, the third contact portion 510 of the third head includes a second electrode 511 configured to apply a first current to the target object and a third electrode 515 configured to apply a second current to the target object. When the third head 500 is attached to the first head 300, both the first contact portion 310 and the third contact portion 510 contact the target object (e.g., a user's skin). The first contact portion 310 can apply ultrasound to the target object while the third contact portion 510 can apply the first current and the second current to the target object.

[0125] Electroporation refers to the application of short, powerful electrical impulses to the skin to form instantaneous pores in the skin barrier, functioning like an electric needle. Iontophoresis refers to the promotion of the movement of ionized ingredients contained in skin care products, increasing the skin penetration rate of the ionized ingredients. A first current for electroporation can form temporary pores in the skin barrier, a second current for iontophoresis can inject the product into the skin, and ultrasound for sonophoresis can draw the product into the skin. The ultrasound, first current, and second current can be applied to the target object in pulsed form.

[0126] The second electrode 511 of the third contact portion includes a positive electrode 512 and a negative electrode 513 for applying a first current to the target object. The positive electrode 512 and the negative electrode 513 are positioned adjacent to each other and apply a first current for electroporation to the target object. The third contact portion includes a third electrode 515, which is one of two electrodes for applying a second current to the target object. The third electrode 515 functions as a donor electrode that delivers negative or positive ions to the skin for iontophoresis. The third electrode 515 can be a positive or negative electrode. The counter electrode disposed within the housing can have the opposite polarity to the third electrode 515. When the user holds the counter electrode of the housing in their hand with the third contact portion 510 in contact with the skin, an electrical circuit is formed that passes through the third electrode 515, the user's body, and the counter electrode, enabling iontophoresis to function.

[0127] In the third contact portion 510, a positive electrode 512 of the second electrode, a negative electrode 513 of the second electrode, and a third electrode 515 are arranged equidistantly from the first central axis CA1 in the circumferential direction CD of the first central axis. Each of the positive electrode 512, the negative electrode 513, and the third electrode 515 is formed in an arc shape so as to surround a portion of the ultrasonic element 311 in the circumferential direction CD of the first central axis CA1. Each of the positive electrode 512, the negative electrode 513, and the third electrode 515 can be formed in a generally arc shape so that the angle formed therewith is less than 120 degrees.

[0128] In one embodiment of the device, the second annular body 530 of the third head includes a second annular housing 532, a second bottom cover 533 that defines a second through-hole 520 and is coupled to the second annular housing 532, and a second top cover 534 that forms the upper end 531 of the second annular body 530. The fifth connector 550 described above is coupled to the second bottom cover 533. The second top cover 534 is formed with electrode holes 535 in which the second electrode 511 and the third electrode 515 are seated. The second electrode 511 can be fixed to the second bottom cover 533 while seated in each electrode hole 535. Seal members 536 are disposed between the second electrode 511 and the electrode hole 535 and between the third electrode 515 and the electrode hole 535.

[0129] A third head circuit board 570 that generates the first current and the second current can be disposed in an internal space defined by the second annular housing 532, the second bottom cover 533, and the second top cover 534. The third head circuit board 570 can be part of the controller described above. The second electrode 511 can be electrically connected to the third head circuit board 570 by a spring 514, and the third electrode 515 can be electrically connected to the third head circuit board 570 by a spring 516. A fifth connector 550 is electrically connected to the third head circuit board 570.

[0130] To describe the controller of an apparatus and the operation of the apparatus according to one embodiment, reference is made to Figure 17. Figure 17 is a block diagram that schematically illustrates components of an apparatus according to one embodiment. The components shown in Figure 17 are exemplary, and apparatus according to other embodiments may not include some of the components shown in Figure 17.

[0131] In one embodiment, the device 10 includes a controller 600 configured to control the electrical components of the device. By way of example, the controller 600 may include a microcontroller unit, an ultrasound element control circuit, a first electrode control circuit, a second electrode control circuit, a third electrode control circuit, a light emitting diode control circuit, a head-mounted detection circuit, a display control circuit, a speaker control circuit, a power supply charging circuit, etc. The controller 600 may be located within the housing 100. Alternatively, portions of the controller 600 may be located within the first head 300 that generates ultrasound for sonophoresis, the second head 400 that generates radio waves and red light, and the third head 500 that generates a first current for electroporation and a second current for iontophoresis.

[0132] When the head mount 200 is coupled to the housing 100 in a first direction by rotating the head mount 200, the detection switch 160 can detect the position of the head mount and send a detection signal to the controller 600. The controller 600 can supply power from the power source 170 to the electrical components based on the detection signal of the detection switch 160. The controller 600 can supply power from the power source 170 to the ultrasonic element 311 of the first head 300 and the display 710. When the second head 400 is attached to the first head 300, the controller 600 can supply power from the power source 170 to the first electrode 411 and the light-emitting diode 460 that emits red light. When the third head 500, rather than the second head, is attached to the first head 300, the controller 600 can supply power from the power source 170 to the second electrode 511 and the third electrode 515 of the third head. If the rotation of the head mount 200 causes the head mount 200 to couple to the housing 100 in a second orientation, and the detection switch 160 does not send a detection signal to the controller 600, the controller 600 can cut off the power as described above.

[0133] The device 10 can operate in a first operating mode when the first head 300 is attached to the head mount 200 and the second head 400 is attached to the first head. The first operating mode can be an operating mode for skin tightening. When the device 10 operates in the first operating mode, ultrasound for sonophoresis can be applied to a target object (e.g., a user's skin) from the ultrasonic element 311 of the first contact portion 310, radio waves can be applied to the target object from the first electrode 411 of the second head 400, and red light can be applied to the target object through the light-transmitting portion of the second head 400 (the first top cover described above).

[0134] In a first operating mode of the device 10, the controller 600 can control the ultrasonic element 311 to enable the ultrasonic element to apply ultrasound waves to the skin for sonophoresis. By way of example, but not limited to, the ultrasonic element 311 can be configured to apply 1 MHz ultrasound to the skin. In the first operating mode of the device 10, the controller 600 can control the first electrode 411 to enable the first electrode to alternately apply radio waves to the skin. By way of example, the controller 600 can be configured to enable the first electrode 411 to perform one cycle in which the first electrode 411 applies 1 MHz radio waves to the target object for approximately 1 second, then the first electrode 411 applies 3 MHz radio waves to the target object for approximately 1 second, and then the first electrode 411 stops applying radio waves for approximately 1 second. Furthermore, the controller 600 can be configured to enable the first electrode 411 to perform the above-described cycle for 180 seconds.

[0135] In the first operating mode of device 10, ultrasonic element 311 applies ultrasound to the skin, thereby altering the functional activity of proteins and thereby increasing the elasticity of collagen fibers. Furthermore, first electrode 411 alternately applies 1 MHz and 3 MHz radio waves to the skin, delivering radio wave energy to different areas below the skin surface to break hydrogen bonds in the dermis layer of the skin and regenerate aged collagen and elastin. In the first operating mode of device 10, the combined effects of ultrasound and radio waves can provide the user with an improved skin tightening effect and a combined effect for skin care.

[0136] The device 10 can operate in a second operating mode with the first head 300 attached to the head mount 200 and the third head 500 attached to the first head. The second operating mode can be an operating mode for skin nutrition. When the device 10 operates in the second operating mode, a first current for electroporation is applied to the skin from the second electrode 511 of the third head 500, a second current for iontophoresis is applied to the skin from the third electrode 515 of the third head 500 or the counter electrode 180 of the housing, and ultrasound for sonophoresis is applied to the skin from the ultrasound element 311 of the first head 300.

[0137] In the second operating mode of the device 10, the controller 600 can control the second electrode 511 to enable the second electrode to apply a first current to the skin for electroporation. As an example, the first current applied by the second electrode 511 can have a frequency of 1 kHz under a voltage of 8.6 V, 10 V, 12 V, 15 V, etc. In the second operating mode of the device 10, the controller 600 can control the third electrode 515 to enable the third electrode to apply a second current to the skin for iontophoresis. As an example, the second current applied by the third electrode 515 can have a frequency of 1 kHz under a voltage of 5 V. The controller 600 can control the third electrode 515 and the counter electrode 180 such that the third electrode 515 functions as a positive electrode and the counter electrode 180 functions as a negative electrode, or such that the third electrode functions as a negative electrode and the counter electrode functions as a positive electrode, depending on the polarity of the ionized ingredients of the skin care product.

[0138] The second mode of operation of the device 10 can simultaneously perform electroporation, iontophoresis, and sonophoresis on the skin, thus combining the application of ultrasound and electrical current to more effectively absorb skin-nutritional products into the skin and provide a combined skin care effect to the user.

[0139] A user can use the device 10 in the second operating mode by removing the second head 400 attached to the first head 300 and attaching the third head 500 to the first head. If a user wishes to use the device 10 in the first operating mode described above, the user can attach the second head 400 to the first head 300 instead of the third head 500. Furthermore, because the first head 300, the second head 400, and the third head 500 are modularized components, the second head and the third head can be selectively attached to the first head depending on the operating mode selected by the user.

[0140] When the detection switch 160 transmits the detection signal, the display 710 can be switched to an ON state. The display 710 can display information about the operating state of the device 10, information about the operating modes described above, and the like. The display 710 can also display information for interfacing between the device and a user. If the display 710 is a touch screen display, the user can input commands related to the operation of the device 10.

[0141] Speaker 720 can emit sound information relating to the operating state of the device under the control of controller 600. Speaker 720 can emit sound information such as information relating to the operating mode of device 10 described above and information relating to the operating state of the device in the operating mode described above.

[0142] The memory card reader 730 can accommodate a memory card that can contain information about the operation and functionality of each head. The device 10 can also include additional heads other than the second head 400 and the third head 500 that can be attached to the first head 300. By inserting a memory card containing information about the operation and functionality of such additional heads into the memory card reader 730, an upgrade of the device 10 can be performed.

[0143] 18 is a perspective view of a device according to one embodiment including a cradle. The device according to one embodiment can include a cradle for holding the housing and head when not in use. The cradle can be used as a charger for charging the power supply located in the housing. The cradle can have a function for sterilizing the first and second heads or the first and third heads that come into contact with the user's skin. According to this embodiment, the cradle can have one or both of a charger function and a sterilizing function.

[0144] The device according to one embodiment can be used as an assembly in which the head mount 200, the first head 300, and the second head 400 are coupled to the housing 100 in this order along the second central axis CA2. Furthermore, the device according to one embodiment can be used as an assembly in which the head mount 200, the first head 300, and the third head 500 are coupled to the housing 100 in this order along the second central axis CA2. The cradle 800 can support and hold an assembly consisting of the housing 100, the head mount 200, the first head 300, and the second head 400 (hereinafter, such an assembly will be referred to as a first assembly). Furthermore, the cradle 800 can also support and hold an assembly consisting of the housing 100, the head mount 200, the first head 300, and the third head 500 (hereinafter, such an assembly will be referred to as a second assembly). Furthermore, the cradle 800 can hold the second head 400 detached from the first head or the third head 500 detached from the first head.

[0145] The cradle 800 may include a lower case 810 that is placed on the floor and an upper case 820 that is coupled to the lower case 810. The cradle 800 can be used with the lower case 810 of the cradle placed on the floor. The cradle 800 includes docking portions 830 and 840 on which the above-mentioned assemblies are placed and to which the above-mentioned assemblies are docked. The docking portions 830 and 840 may be formed as upper portions of the upper case 820.

[0146] The cradle 800 can support the first or second assembly described above along the second central axis CA2 using two docking portions. A portion of the housing not supported by the cradle 800 can exist between the two docking portions, with a gap formed between the surface of the upper case 820 and the housing portion. The docking portions 830 and 840 include a first docking portion 830 that supports the lower end 112 of the housing and a second docking portion 840 that supports at least the head mount 200 and the first head 300. The second docking portion 840 is spaced apart from the first docking portion 830 along the second central axis CA2 of the housing. The inner end of the second docking portion 840 is positioned higher than the inner end of the first docking portion 830 relative to the floor. Therefore, the docking portions 830 and 840 are inclined relative to the floor surface, and the housing 100 can be docked in the docking portions 830 and 840 of the cradle while being at a lower position than the head mount 200.

[0147] The cradle 800 includes a connection portion 850 that interconnects the first docking portion 830 and the second docking portion 840. The connection portion 850 can be a surface of the upper case 820 that interconnects the first docking portion and the second docking portion. The connection portion 850 is located lower than the imaginary line that interconnects the first docking portion and the second docking portion. Therefore, when the housing 100 and the head mount 200 are docked to the first docking portion and the second docking portion, respectively, a gap is formed between the connection portion 850 and the outer circumferential surface of the housing. The cradle 800 includes a head keeping recess 851 formed in the connection portion 850. The head keeping recess 851 is located between the first docking portion 830 and the second docking portion 840 and is configured to accommodate the second head 400 or the third head 500. 18 shows an example in which a first assembly consisting of a housing, a head mount, a first head, and a second head is docked to the cradle 800, and the head holding recess 851 accommodates the third head 500. In an example in which a second assembly consisting of a housing, a head mount, a first head, and a third head is docked to the cradle 800, the head holding recess 851 accommodates the second head 400.

[0148] A head cover 870 is rotatably arranged on the upper case 820 so as to be positioned adjacent to the second docking portion 840. The head cover 870 is configured to be rotatable so as to cover the first head 300 and the second head 400 docked in the second docking portion, or the first head 300 and the third head 500 docked in the second docking portion.

[0149] Figure 19 is a partial perspective view of the cradle showing a first docking portion of the cradle shown in Figure 18. Figure 20 is a partial perspective view of the housing showing a lower end of the housing shown in Figure 18. The following description will refer to Figures 19 and 20.

[0150] The first docking portion 830 includes a docking hole 831. The docking hole 831 is formed along a second central axis CA2 of the housing and surrounds the lower end portion 112 of the housing. When the lower end portion 112 of the housing is docked to the first docking portion 830, the lower end portion 112 of the housing is inserted into the docking hole 831, and the docking hole 831 receives the lower end portion of the housing along the second central axis. A docking hole cover 832 coupled to the upper case 820 may form a part of the docking hole 831.

[0151] When the first or second assembly is docked to the cradle 800, the cradle 800 can charge the power source within the housing. The cradle 800 includes a charging terminal for charging the power source within the housing. The housing 100 includes a charging terminal located at the bottom end 112 of the housing that corresponds to the charging terminal of the cradle.

[0152] The charging terminals of the cradle are disposed in the first docking portion 830. The first docking portion 830 includes male charging terminals 833 disposed at the bottom of the docking hole 831 (at the bottom of the docking hole cover 832) and protruding from the bottom of the docking hole. The male charging terminals 833 may be configured as pogo pins, like the pogo pins of the pogo pin connector described above. Each male charging terminal 833 configured as a pogo pin is configured to be pressed against the lower end portion 112 of the housing when the lower end portion 112 of the housing is docked with the first docking portion 830. When the lower end portion 112 of the housing is inserted into the docking hole 831 of the first docking portion 830 along the second central axis CA2, the male charging terminals 833 of the pogo pins are pressed, simultaneously supplying charging power to the power source within the housing. The first docking portion 830 has a positioning pin 834 protruding from the bottom of the docking hole 831. A locating pin 834 can be inserted into the lower end 112 of the housing.

[0153] A charging terminal of the housing is disposed at the lower end 112 of the housing. The charging terminal of the housing includes a female charging terminal 147. The female charging terminal 147 can be electrically connected to a power source within the housing. As an example, the rear housing 140 has an upwardly recessed terminal recess 148 at its lower end, and the female charging terminal 147 is disposed within the terminal recess 148. The female charging terminal 147 can be formed as a terminal that can contact the male charging terminal 833 of the pogo pin, like the second connector described above.

[0154] When the lower end portion 112 of the housing is inserted into the docking hole 831 of the first docking part, the male charging terminals 833 are electrically connected to the female charging terminals 147. Furthermore, the male charging terminals 833 of the pogo pins come into contact with the corresponding female charging terminals 147 and are pressed by the corresponding female charging terminals 147. When the lower end portion 112 of the housing is inserted into the docking hole 831, the positioning pins 834 are inserted into the terminal recesses 148 to assist in mating the male charging terminals with the female charging terminals.

[0155] Figure 21 is a partial perspective view of the cradle showing the second docking portion of the cradle shown in Figure 18. Figure 22 is a partial perspective view of the housing, head mount, first head, and second head shown in Figure 18. The following description will refer to Figures 21 and 22.

[0156] The second docking portion 840 has a shape corresponding to the outer circumferential surface of the head mount 200, the outer circumferential surface of the first head 300, and the outer circumferential surface of the second head 400. The second docking portion 840 includes a docking surface 841 formed to be complementary to the outer circumferential surface of the head mount 200, the outer circumferential surface of the first head 300, and the outer circumferential surface of the second head 400 (or the outer circumferential surface of a third head). As an example, the docking surface 841 can be formed to surround half of the head mount, half of the first head, and half of the second head.

[0157] When the head mount and head are docked to the second docking portion 840, they are guided by a docking surface 841. The second docking portion 840 includes guide grooves 842 and 843 formed in the docking surface 841 to guide the head mount and head to the docking surface 841. The guide groove 842 is formed in the docking surface 841 along the second central axis CA2. Guide protrusions 212, 324, and 437 corresponding to the guide groove 842 are formed on the outer peripheral surfaces of the head mount 200, the first head 300, and the second head 400. A guide protrusion similar to the guide protrusion 437 of the second head is also formed on the outer peripheral surface of the third head. When the head mount and head are docked to the second docking portion 840, the guide protrusions 212, 324, and 437 are inserted into the guide grooves 842, allowing the head mount and head to sit on the docking surface 841 without shaking. A guide groove 843 having a shape corresponding to the shape of the push button 232 of the head mount is formed on a lateral end edge of the docking surface 841. When the head mount is docked to the second docking portion 840, the push button 232 can fit into the guide groove 843.

[0158] The cradle 800 can be configured to sterilize the heads while charging the power source or while holding the first or second assemblies. In this regard, the cradle 800 includes an ultraviolet light emitter 862 positioned to emit ultraviolet light toward the first head 300 and the second head 400 (or toward the first head 300 and the third head).

[0159] The ultraviolet light emitter 862 is positioned adjacent to the second docking portion 840 and is disposed within the cradle so as to emit ultraviolet light toward the head. The cradle includes an end wall portion 860 positioned adjacent to the second docking portion 840 along the second central axis CA2. The end wall portion 860 includes one end of the upper case 820 and an emitter cover 861 coupled to one end of the upper case. The ultraviolet light emitter 862 is disposed within the emitter cover 861 in the end wall portion 860 so as to face the first head 300 and the second head 400. As an example, the ultraviolet light emitter 862 may include an ultraviolet light-emitting diode that emits ultraviolet light having a UV-C wavelength of 100 nm to 280 nm. The ultraviolet light emitter 862 may be disposed within the end wall portion 860 (specifically, the emitter cover 861) so as to face approximately the center of the first head 300. When the head mount and head are docked to the second docking portion 840, the ultraviolet light emitter 862 operates to sterilize the surfaces of the first head 300 and the second head 400 (or the first head and the third head) that face the ultraviolet light emitter (e.g., the contact portions of the heads).

[0160] The end wall portion 860 can have a shape that corresponds to the shape of the semi-cylindrical space defined by the docking surface 841. The light emitter cover 861 of the end wall portion includes a stopper pin 863 that protrudes toward the docking surface 841. When the head mount and head dock with the second docking portion 840, the stopper pin 863 can contact the second head or the third head.

[0161] The cradle 800 can indicate the sterilization operation of the head to the user. In this regard, the cradle 800 includes a sterilization indicator 864 that provides information regarding the operation of the ultraviolet light emitter 862. The sterilization indicator 864 can operate together with the operation of the ultraviolet light emitter 862 or in response to the rotation of the head cover 870. The sterilization indicator 864 is disposed within the cradle so as to be located adjacent to the second docking portion 840. Specifically, the sterilization indicator 864 can be disposed at the upper end of the end wall portion 860 and provide information regarding the operation of the ultraviolet light emitter upward. As an example, the sterilization indicator 864 can be a diode that emits blue light. When the head cover 870 is rotated to cover the second docking portion 840, the blue light emitted by the sterilization indicator 864 passes through the head cover 870, and the sterilization indicator 864 can provide information regarding the operation of the ultraviolet light emitter to the user through the blue light.

[0162] In one embodiment of the device, the head cover 870 is rotatably coupled to one end of the upper case 820 and positioned adjacent to the second docking portion 840. The method of coupling the head cover 870 to the upper case is not limited to a rotational coupling method. The head cover 870 is formed to cover both the first head 300 and the second head 400 (or the first head and the third head) docked to the second docking portion 840, and the ultraviolet light emitter 862 disposed on the end wall portion 860, and is rotatable to cover them. The head cover 870 is formed to cover both a portion of the outer circumferential surface of the first head 300 that is not covered by the docking surface 841 and a portion of the outer circumferential surface of the second head 400. When the head mount and the head are docked to the second docking portion 840 and the head cover 870 covers the head, the ultraviolet light emitted by the ultraviolet light emitter 862 is blocked by the head cover 870, thereby preventing adverse effects on the user.

[0163] Please refer to FIG. 23, which shows the second docking portion of the cradle and head cover of the device according to one embodiment.

[0164] A head cover 870 that partially covers the second docking portion 840 can be rotatably coupled to one end of the upper case 820. The upper case 820 includes a pair of hinge holes 821 at one end. The head cover 870 includes a pair of lug portions 871 that protrude from the lower edge of the head cover, and each lug portion has a hinge pin 872 that fits into the hinge hole 821. The hinge pin 872 fits into the hinge hole 821, thereby rotatably coupling the head cover 870 to the upper case 820.

[0165] In one embodiment of the device, the head cover 870 can be coupled to the upper case 820 so as to rotate between an open position where a head can be inserted into the second docking portion and a closed position where the head cover covers the head. In this regard, the upper case 820 has first and second positioning detents 822 and 823 that are recessed inward and located adjacent to each hinge hole 821. The head cover 870 has a positioning protrusion 873 on each ear 871 that is located adjacent to the hinge pin 872 and that resiliently couples with the first and second positioning detents 822 and 823. When the head cover 870 rotates around the hinge pin 872, the positioning protrusion 873 couples with the first and second positioning detents 822 and 823. Therefore, the range of rotation of the head cover 870 can be limited to the angular range between the first and second positioning detents 822 and 823 relative to the hinge hole 821 .

[0166] When the head cover 870 is rotated to the open position described above, the positioning protrusion 873 can mate with the first positioning detent 822 to maintain the head cover 870 in the open position. With the head cover 870 rotated to the open position, the head mount and head can be docked to the second docking portion 840.

[0167] When the head cover 870 is rotated to the closed position, the positioning protrusions 873 engage with the second positioning detents 823. Furthermore, both side edges of the head cover come into contact with corresponding edges of the second docking portion 840. Therefore, a sterilization chamber for sterilizing the head is formed between the inner surface of the head cover 870 and the second docking portion, and the ultraviolet light emitter can emit ultraviolet light toward the sterilization chamber.

[0168] The cradle may include a cover switch 865 that detects rotation of the head cover 870 to the closed position. The cover switch 865 may be located on the end wall portion 860. When the head cover 870 is rotated to the closed position, the cover switch 865 may detect the rotation of the head cover and activate the ultraviolet light emitter and the germicidal indicator.

[0169] As an example, cover switch 865 includes a pogo pin 866 similar to the pogo pins described above. When head cover 870 is rotated to the closed position, the inner surface of closed end 874 of the head cover presses against cover switch 865. Thus, pogo pin 866 of the cover switch is pressed, allowing cover switch 865 to detect the rotation of the head cover to the closed position and generate a head cover closed signal.

[0170] The lower case 810 of the cradle includes a connection terminal 811 for connecting to an external power source. For example, an adapter connected to an external power source such as a household power source is connected to the connection terminal 811, so that the cradle can receive power from the external power source. Power from the external power source can be supplied to the male charging terminal, the ultraviolet light emitter, and the sterilization indicator.

[0171] Figure 24 is a cross-sectional view showing the longitudinal cross-sectional shape of the cradle shown in Figure 18, with the housing and head assembly docked to the cradle shown in dotted lines. Reference will be made to Figure 24 in the following description.

[0172] The cradle 800 includes a cradle controller 880 that controls the operation of the cradle components. As an example, the cradle controller 880 may include a circuit board, a processing processor mounted on the circuit board, and a plurality of circuits formed on the board, connected to the processing processor, and configured to perform respective functions of the cradle. A male charging terminal 833 is attached to the circuit board 835 and electrically connected to the cradle controller 880. An ultraviolet light emitter 862 is electrically connected to the cradle controller 880. A sterilization indicator 864 and a cover switch 865 are electrically connected to the cradle controller 880. A connection terminal 811 is electrically connected to the cradle controller 880, and an external power source can be electrically connected to the cradle controller 880 via the connection terminal 811.

[0173] With head cover 870 (shown by dotted lines in FIG. 24 ) rotated to the open position, the first or second assembly can be docked to cradle 800. The lower end portion 112 of the housing can be inserted into the docking hole 831 of the first docking portion to dock with first docking portion 830. When the lower end portion 112 is docked with the first docking portion 830, the positioning pin 834 is inserted into the terminal recess (terminal recess 148 shown in FIG. 20 ) of the lower end portion 112, and the female charging terminal (female charging terminal 147 shown in FIG. 20 ) presses against the male charging terminal 833. The power source 170 in the housing 100 can be charged via the male charging terminal 833 and the female charging terminal, which are electrically connected to each other.

[0174] The head cover 870, which is disposed in the open position, rotates to the second docking portion 840 of the upper case 820 to cover the first head 300 and the second head 400. When the head cover 870 rotates to the closed position to cover the first head 300 and the second head 400, the closed end 874 of the head cover presses the pogo pin 866 of the cover switch 865 provided on the end wall portion 860, and the cover switch 865 sends a closure signal regarding the closure of the head cover to the cradle controller 880. The cradle controller 880 operates the ultraviolet light emitter 862 and the sterilization indicator 864 based on the closure signal. Therefore, when the head cover 870 rotates to the closed position, the ultraviolet light emitter 862 can perform a sterilizing action on the first head 300 and the second head 400 docked to the second docking portion 840. Furthermore, when the head cover 870 rotates to the closed position, the sterilization indicator 864 can operate to provide information regarding the operation of the ultraviolet light emitter 862. Furthermore, the ultraviolet light emitted by the ultraviolet light emitter 862 can be blocked by the head cover 870.

[0175] As one example, the cradle controller 880 can operate the ultraviolet light emitter 862 such that the ultraviolet light emitter 862 operates for a predetermined period of time in response to a closure signal from the cover switch 865. As another example, the cradle controller 880 can detect rotation of the head cover 870 to the open position and deactivate the ultraviolet light emitter 862 and the sterilization indicator 864. When the head cover 870 is rotated to the open position, the pogo pin 866 of the cover switch 865 returns to a non-pressured state, and the cover switch 865 can send a head cover open signal to the cradle controller 880. Thus, the cradle controller 880 can deactivate the ultraviolet light emitter 862 and the sterilization indicator 864.

[0176] The technical concept of the present disclosure has been described above with reference to several embodiments and examples shown in the accompanying drawings. However, it should be understood that various substitutions, modifications, and changes that are understandable to those skilled in the art to which the present disclosure pertains can be made without departing from the technical concept and scope of the present disclosure. Furthermore, it should be understood that such substitutions, modifications, and changes are also included within the scope of the appended claims. [Explanation of symbols]

[0177] 10 equipment 100 Housing 111 Upper end 112 Lower end 120 Mounting Plate 121 Bearing hole 122 Detent 130 Front housing 131 Front mounting plate 140 rear housing 141 Rear mounting plate 200 Head Mount 240 First Connector 241 Pogo Pin 300 First Head 310 first contact part 311 Ultrasonic element 360 Third Connector 361 Pogo Pin 410 Second contact part 411 First electrode CA1 First central axis CA2 Second central axis CD Circumferential direction

Claims

1. Housing and a head mount configured to couple to the housing; a first head including a first contact portion that contacts a target object, the first head being configured to be detachably attached to the head mount along a first central axis of the head mount and electrically connected to the head mount; a second head including a second contact portion formed to surround the first contact portion and contacting the target object together with the first contact portion, the second head being configured to be detachably attached to the first head along the first central axis and electrically connected to the first head; a controller configured to control the first head and the second head; An apparatus comprising:

2. the head mount is configured to rotate about the first central axis to couple to an end of the housing in a first orientation or a second orientation; The controller supplying power to the first head and the second head when detecting that the head mount is coupled to the end of the housing in the first direction; cutting off the power when detecting that the head mount has been disconnected from the end of the housing in the first direction. The apparatus of claim 1 further configured to:

3. the housing includes a detection switch disposed inside the housing and configured to transmit a detection signal to the controller when the head mount is coupled to the end of the housing in the first direction; the head mount includes a switch operation portion that turns the detection switch on or off by rotating the head mount; 3. The apparatus of claim 2.

4. a mounting plate inclined at a predetermined angle with respect to a second central axis of the housing is formed at the end of the housing to which the head mount is coupled; the head mount is configured to rotate about the first central axis to couple to the mounting plate in the first orientation or the second orientation; When the head mount is coupled in the first direction, the first central axis of the head mount is inclined at the inclination angle with respect to the second central axis of the housing; When the head mount is coupled in the second orientation, the first central axis of the head mount is parallel to or coaxial with the second central axis of the housing.

3. The apparatus of claim 2.

5. the head mount includes a ball that is resiliently compressed toward the mounting plate; the mounting plate includes a detent into which the ball is releasably inserted when the head mount is coupled to the end of the housing in the first orientation or the second orientation.

5. The apparatus of claim 4.

6. the head mount includes a locking latch that is elastically compressed toward the first central axis, the locking latch including a push button disposed on an outer circumferential surface of the head mount; the first head includes a locking groove to which the locking latch is releasably coupled; 10. The apparatus of claim 1.

7. The first head includes: a disk detachably attached to the head mount; a shaft extending from the disk along the first central axis; a protruding end formed on the shaft by the first contact portion; and the second head includes: a first through hole into which the shaft is inserted along the first central axis; a first annular body disposed on the disk, the first annular body including an upper end formed along a circumference of the first through hole by the second contact portion; The apparatus of claim 1 , comprising:

8. When the second head is attached to the first head, the first contact portion of the protruding end and the second contact portion of the upper end are arranged concentrically with respect to the first central axis.

8. The apparatus of claim 7.

9. the first head includes a first magnet disposed inside the disk, and the second head includes a second magnet disposed inside the first annular body and corresponding to the first magnet; 8. The apparatus of claim 7.

10. the shaft includes a key formed on an outer circumferential surface of the shaft along the first central axis, and the first through hole includes a key groove into which the key is inserted; 8. The apparatus of claim 7.

11. a third head configured to be detachably attached to the first head along the first central axis and electrically connected to the first head, the third head including a third contact portion formed to surround the first contact portion and to contact the target object together with the first contact portion; the second head and the third head are detachably and selectively attached to the first head; the controller is configured to control the third head; 10. The apparatus of claim 1.

12. The first head includes: a disk detachably attached to the head mount; a shaft extending from the disk along the first central axis; a protruding end formed on the shaft by the first contact portion; and the third head includes: a second through hole into which the shaft is inserted along the first central axis; a second annular body disposed on the disk, the second annular body including an upper end formed along a circumference of the second through hole by the third contact portion; The apparatus of claim 11 , comprising:

13. the first head includes a first magnet disposed inside the disk, and the third head includes a third magnet disposed inside the second annular body and corresponding to the first magnet; the shaft includes a key formed on an outer circumferential surface of the shaft along the first central axis, and the third through hole includes a key groove into which the key is inserted.

13. The apparatus of claim 12.

14. the first contact portion includes an ultrasound element that applies ultrasound waves for sonophoresis to the target object; one of the second contact portion and the third contact portion includes a first electrode configured to alternately apply radio waves to the target object; The other of the second contact portion and the third contact portion is a second electrode configured to apply a first current for electroporation to the subject object; a third electrode configured to apply a second current to the subject for iontophoresis; Including, the housing includes a counter electrode disposed on an outer periphery of the housing and configured to apply the second current to the target object.

12. The apparatus of claim 11.

15. The first electrode includes a pair of electrodes formed in an arc shape so as to surround a portion of the ultrasonic element in a circumferential direction of the first central axis.

15. The apparatus of claim 14.

16. the second electrode includes a positive electrode and a negative electrode for applying the first current to the target object; The positive electrode of the second electrode, the negative electrode of the second electrode, and the third electrode are each formed in an arc shape so as to surround a portion of the ultrasonic element in the circumferential direction of the first central axis.

15. The apparatus of claim 14.

17. a power supply disposed within the housing and configured to be controlled by the controller to supply power to the first head, the second head, and the third head; 12. The apparatus of claim 11.

18. a display disposed on the housing and configured to display information regarding an operating state of the device, the display being controlled by the controller; 10. The apparatus of claim 1.

19. a speaker disposed within the housing and configured to audibly emit information regarding the operating state of the device, the speaker being controlled by the controller; 10. The apparatus of claim 1.

20. a memory card reader disposed within the housing and configured to receive a memory card, the memory card reader connected to the controller; 10. The apparatus of claim 1.

21. The head mount further includes a cradle configured to support the housing, the head mount, and the first head coupled in sequence along a second central axis of the housing, the cradle including: a first docking portion supporting a lower end of the housing; a second docking portion spaced apart from the first docking portion along the second central axis and supporting the head mount and the first head; The apparatus of claim 1 , comprising:

22. the first docking portion includes a docking hole that receives the lower end of the housing along the second central axis; The second docking portion is a docking surface formed complementarily with an outer peripheral surface of the head mount and an outer peripheral surface of the first head; a guide groove formed on the docking surface to guide the head mount and the first head to the docking surface; 22. The apparatus of claim 21, comprising:

23. a power supply disposed within the housing and configured to provide power to the first head and the second head; the housing includes a female charging terminal disposed at the bottom end of the housing for charging the power source; the first docking portion includes a male charging terminal configured to be electrically connected to and compressed by the female charging terminal; 22. The apparatus of claim 21.

24. the cradle includes an ultraviolet light emitter arranged to emit ultraviolet light toward the first head and the second head.

22. The apparatus of claim 21.

25. the cradle includes a germicidal indicator that provides information regarding operation of the ultraviolet light emitter; 25. The apparatus of claim 24.

26. The cradle includes: a head cover configured to be rotatable so as to cover the ultraviolet light emitter and the first and second heads docked to the second docking portion; a cover switch that detects rotation of the head cover and activates the ultraviolet light emitter and the sterilization indicator; 26. The apparatus of claim 25, comprising:

27. a third head configured to be detachably attached to the first head along the first central axis and electrically connected to the first head, the third head including a third contact portion formed to surround the first contact portion and to contact the target object together with the first contact portion; the cradle includes a head holding recess positioned between the first docking portion and the second docking portion and formed to accommodate the second head or the third head; 22. The apparatus of claim 21.

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