CN117357785A

CN117357785A - Hand-held beauty equipment

Info

Publication number: CN117357785A
Application number: CN202210761428.2A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Microport Aesthetics Shanghai Group Co Ltd
Current assignee: Microport Aesthetics Shanghai Group Co Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2024-01-09

Abstract

The present application relates to a handheld cosmetic device. The handheld cosmetic equipment comprises a machine body, a power supply module, a control module, a radio frequency power amplification module and an electrode module; the body comprises a treatment head and a handheld part, and the treatment head is connected with the handheld part; the power supply module is used for providing direct current signals for the radio frequency power amplification module; the control module is used for providing a control signal; the radio frequency power amplification module is used for converting the direct current signal provided by the power supply module into a radio frequency signal; the electrode module comprises a first electrode and a second electrode which are both connected with the radio frequency power amplification module; the first electrode is positioned on the treatment head and is configured to contact with the target part so as to apply a radio frequency signal to the target part; the second electrode is configured to contact the hand such that the radio frequency signal is transmitted to the target site. The handheld cosmetic device can enable radio frequency energy of radio frequency signals to radiate downwards from the epidermis, the penetration depth of the radio frequency energy is deeper, the skin can be deep, and the skin tightening effect is obvious.

Description

Hand-held beauty equipment

Technical Field

The application relates to the technical field of electronic equipment, in particular to handheld cosmetic equipment.

Background

The radio frequency beauty instrument can utilize the thermal effect of radio frequency current generated by the radio frequency electromagnetic field when the radio frequency electromagnetic field passes through skin tissues to enable collagen in the dermis layer to be reversibly denatured, and can stimulate the formation of new collagen in the healing process, thereby generating tensioning and lifting effects on the skin. As a non-invasive technique, radio frequency technology has been widely used to reduce facial wrinkles and laxity.

Currently, most handheld radio frequency beauty instruments use bipolar radio frequency technology or multipolar radio frequency technology. The bipolar radio frequency technology or the multipolar radio frequency technology is mainly limited in that positive and negative electrodes are arranged parallel to skin, the penetration depth of radio frequency energy is shallow, and the skin cannot be deeply penetrated, so that the skin tightening effect is not obvious.

Disclosure of Invention

According to some embodiments, a handheld cosmetic device is provided, including a body, and a power module, a control module, a radio frequency power amplification module, and an electrode module respectively disposed in the body; wherein the method comprises the steps of

The body comprises a treatment head and a handheld part, and the treatment head is connected with the handheld part;

the power module is connected with the radio frequency power amplification module and is used for providing direct current signals for the radio frequency power amplification module;

the control module is connected with the radio frequency power amplification module and is used for providing control signals;

the radio frequency power amplification module is used for converting the direct current signal provided by the power supply module into a radio frequency signal according to the control signal provided by the control module, and the frequency of the radio frequency signal is more than or equal to 300kHz;

the electrode module comprises a first electrode and a second electrode, the first electrode and the second electrode are both connected with the radio frequency power amplification module, and the first electrode and the second electrode are not in the same interface;

wherein the first electrode is located at the treatment head and is configured to contact a target site to apply the radio frequency signal to the target site; the surface of the first electrode is provided with a dielectric film which is used for generating equivalent capacitance between the first electrode and the target part;

the second electrode is positioned at the handheld part and is at least multiplexed into a part of the handheld part; the second electrode is configured to contact the hand to enable the radio frequency signal to be delivered to the target site.

In the hand-held beauty device, the first electrode and the second electrode are not positioned at the same interface, and the first electrode contacts a target part of a human body (such as facial skin) to apply radio frequency energy thereto; the second electrode is arranged in the handheld area of the body so as to be in contact with other parts (such as the skin of the hand), and compared with the bipolar radio frequency or multipolar radio frequency adopted by most handheld radio frequency beauty instruments, the loop length between the first electrode and the second electrode can be greatly increased, and meanwhile, the radio frequency energy of radio frequency signals can be radiated from the epidermis to the skin, so that the penetration depth of the radio frequency energy is deeper and can penetrate into the deep skin, and the skin tightening effect of the equipment is improved. Because the surface of the first electrode is provided with the dielectric film, in the process of using the device, the radio frequency energy of the radio frequency signal can be coupled into the target part through the equivalent capacitance generated between the first electrode and the target part by the dielectric film, so that the pricking feeling of the electrode directly acting on the skin can be reduced, and compared with a non-capacitive electrode, the surface of the first electrode provided with the dielectric film also enables the radio frequency energy to be distributed on the surface of the first electrode more uniformly, and thus the radio frequency energy acts on the target part more uniformly. Meanwhile, the handheld part of the handheld cosmetic equipment can be at least partially used as the second electrode, so that a user can naturally contact the second electrode when holding the handheld part to use the equipment, a complete loop is formed, radio frequency signals can be normally transmitted to a target part, the additionally arranged second electrode is not needed, and convenience of the user and portability of the equipment are greatly improved.

In one embodiment, the handheld cosmetic device further comprises an impedance matching module;

the impedance matching module is connected with the radio frequency power amplification module and is used for matching the impedance of the target part with the circuit impedance so that the output efficiency of the circuit is greater than or equal to 50%.

In one embodiment, the impedance matching module includes a pi-type impedance matching circuit.

In one embodiment, the frequency of the radio frequency signal is greater than or equal to 3MHz.

In one embodiment, the radio frequency signal has a frequency of 6.78MHz.

In one embodiment, the radio frequency circuit amplification module includes a class E power amplifier.

In one embodiment, the equivalent area of the second electrode is not less than 1cm ² 。

The second electrode of the hand-held cosmetic device has an effective area of not less than 1cm for contacting with skin at other parts of human body ² Therefore, the problem that the equipment stops working due to contact disconnection caused by too small second electrode is avoided.

In one embodiment, the equivalent area of the second electrode is not less than 8cm ² 。

In one embodiment, the handheld portion is integrally used as the second electrode, and the material of the handheld portion includes a conductive material.

In one embodiment, the dielectric film includes a first dielectric film layer and a second dielectric film layer; the first dielectric film layer is positioned on the surface of the first electrode, and the second dielectric film layer is positioned on the surface of the first dielectric film layer; the thickness of the first film layer is smaller than that of the second dielectric film layer.

The handheld cosmetic device is provided with the first dielectric film layer on the surface of the first electrode, and the first dielectric film layer can be used for generating a coupling capacitance between the first electrode and the target part, so that the first electrode is not directly contacted with the surface of a human body, and radio frequency energy is coupled into the skin through the coupling capacitance between the first electrode and the skin of the human body, so that the stinging and uncomfortable feeling caused by overlarge local current of the electrode can be effectively prevented. The surface of the first medium film layer of the handheld cosmetic device is also provided with the second medium film layer, the effect of equivalent capacitive coupling can be further increased by adding the second medium film layer compared with the single-layer medium film layer, the uniformity of radio frequency energy distribution is further improved, the use experience of the device is further improved, and when the thickness of the second medium film layer is larger than that of the first medium film layer, the improvement effect is more remarkable. Meanwhile, the second dielectric film layer can also play a role in protecting the first dielectric film layer and the first electrode, so that the stability of the handheld cosmetic equipment in the daily use process and the comfort of the face of a user in the sliding treatment are improved.

In one embodiment, the thickness of the first dielectric film layer is 0.01-0.1 mm, and the thickness of the second dielectric film layer is 0.05-1 mm.

In one embodiment, the dielectric film is made of polyimide, polycarbonate, polypropylene, polyamide, polymethyl methacrylate and/or polyethylene terephthalate.

In one embodiment, the first dielectric film layer comprises a polyimide film and the second dielectric film layer comprises a polycarbonate film.

The polycarbonate film has high Rockwell hardness, high heat distortion temperature, high tensile strength, high resistivity, poor water absorption, high heat conductivity, thin thickness, excellent acid resistance, alcohol resistance and oil resistance, and low water absorption; therefore, the polycarbonate film is adopted as the second dielectric film layer, so that the effect of equivalent capacitive coupling is further improved, and the stability of the handheld cosmetic equipment in daily use can be further improved.

In one embodiment, the electrode module further comprises a temperature monitoring unit and a touch detection unit which are respectively connected with the control module; wherein the method comprises the steps of

The temperature monitoring unit is integrated in the first electrode and is used for monitoring the temperature of the target part;

the touch detection unit is connected with the second electrode and is used for responding to the control instruction of the control module and detecting whether the second electrode is in contact with the hand. The handheld cosmetic equipment can monitor the temperature of the surface of the target part in real time in the use process so as to prevent scalding caused by overheating. At the same time, it is also possible to detect whether the second electrode is always in contact with the hand.

In one embodiment, the first electrode is removably disposed on the treatment head;

wherein, dielectric film with first electrode integrated into one piece sets up.

In one embodiment, the control module includes:

the switch unit is used for responding to human body actions to generate a switch signal and/or a gear signal;

and the micro control unit is connected with the switch unit, the radio frequency power amplification module and the electrode module and used for controlling the radio frequency power amplification module according to the switch signal and/or the gear signal.

In one embodiment, the power module includes a power adapter;

the power adapter is used for converting an alternating current signal into the direct current signal which is transmitted to the radio frequency power amplification module.

In one embodiment, the rf power amplification module includes an rf transistor and a tuning circuit; wherein the method comprises the steps of

The control module controls the radio frequency transistor to convert the direct current signal into the radio frequency signal according to the control signal;

the tuning circuit is arranged on the connecting passage of the radio frequency transistor, the first electrode and the second electrode and is used for tuning the radio frequency signal.

Drawings

In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings required for the descriptions of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural view of a handheld cosmetic device according to one embodiment of the present application;

fig. 2 is a side view of a handheld cosmetic device provided in one embodiment of the present application;

fig. 3 (a) is a front view showing the electric field distribution of the surface of the metal electrode without the dielectric film, and fig. 3 (b) is a top view showing the electric field distribution of the surface of the metal electrode without the dielectric film; fig. 3 (c) is a front view of the electric field distribution of the first electrode surface in one embodiment of the present application, and fig. 3 (d) is a top view of the electric field distribution of the first electrode surface in one embodiment of the present application;

fig. 4 is a schematic structural view of a handheld beauty device according to another embodiment of the present application.

Reference numerals illustrate:

10. a body; 101. a treatment head; 102. a hand-held part; 20. a power module; 201. a power adapter; 30. a radio frequency power amplification module; 301. a radio frequency transistor; 302. a tuning circuit; 40. a control module; 401. a switching unit; 402. a micro control unit; 50. an electrode module; 501. a first electrode; 502. a second electrode; 503. a temperature monitoring unit; 504. a touch detection unit; a. a direct current signal; b. a control signal; 60. and an impedance matching module.

Detailed Description

In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transfer between them.

It will be understood that, although the terms first and second may be used to describe various elements, components and/or sections, these elements, components and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, and/or section from another element, component, and/or section. Thus, a first element, component, and/or section discussed below could be termed a second element, component, and/or section without departing from the teachings of the present invention; for example, a first electrode may be referred to as a second electrode, and similarly, a second electrode may be referred to as a first electrode; the first electrode and the second electrode are different electrodes, for example, the first electrode may be a positive electrode and the second electrode may be a negative electrode, or the first electrode may be a negative electrode and the second electrode may be a positive electrode.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and the like, specify the presence of stated features, integers, components, portions, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, components, portions, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.

The radio frequency beauty instrument applies a radio frequency electromagnetic field with the frequency of 300 kHz-300 MHz to the skin, and uses the thermal effect of radio frequency current generated by the radio frequency electromagnetic field when the radio frequency electromagnetic field passes through skin tissues to enable collagen in the dermis layer to be reversibly denatured, and stimulates the formation of new collagen in the healing process, thereby generating tensioning and lifting effects on the skin. As a non-invasive technique, radio frequency technology has been widely used to reduce facial wrinkles and laxity.

Currently, most handheld radio frequency beauty instruments adopt a bipolar radio frequency technology or a multipolar radio frequency technology; namely, the radio frequency electrodes at the front end of the beauty instrument are two (two groups) or more (multiple groups) and are divided into positive and negative electrodes; the positive and negative poles are parallel to the skin, and the positive and negative poles are mutually transformed at extremely high frequency to form a high-frequency oscillating electromagnetic field which acts on the skin. The main limitation of the bipolar or multipolar rf technology is that the rf energy penetrates to a shallow depth and cannot penetrate deep into the skin, so that the skin tightening effect is not obvious.

In view of the above-described deficiencies of the prior art, the present application, according to some embodiments, provides a handheld cosmetic device.

Referring to fig. 1, fig. 1 shows a handheld cosmetic device according to one embodiment of the present application. The hand-held beauty device may include a body, a power module 20, a radio frequency power amplifying module 30, a control module 40 and an electrode module 50 respectively disposed in the body 10.

Referring to fig. 2, body 10 may include a treatment head 101 and a handpiece 102. The treatment head 101 is connected to the hand-held part 102.

The power module 20 is connected to the rf power amplifying module 30, and may be used to provide the dc signal a to the rf power amplifying module 30. The control module 40 is connected to the rf power amplifying module 30 and may be used to provide a control signal b. The rf power amplification module 30 may be configured to convert the dc signal a provided by the power module 20 into an rf signal according to the control signal b provided by the control module 40.

The electrode module 50 may include a first electrode 501 and a second electrode 502, each of the first electrode 501 and the second electrode 502 being connected to the rf power amplification module 30. As shown in fig. 2, the first electrode 501 and the second electrode 502 are not at the same interface.

Wherein, the first electrode 501 may be disposed on the treatment head 101 and used for contacting with the target site to apply the radio frequency signal to the target site. The surface of the first electrode has a dielectric film for creating an equivalent capacitance between the first electrode 501 and the target site.

The second electrode 502 may be disposed on the hand-held portion 102 and at least multiplexed into a portion of the hand-held portion 102; the second electrode 502 is in contact with the hand, and the first electrode 501 and the second electrode 502 form a loop, so that the radio frequency signal can be transmitted to the target site.

In the hand-held beauty device, the first electrode 501 and the second electrode 502 are not at the same interface. Radio frequency energy is applied to a target site (e.g., facial skin) by contact with a first electrode on the first electrode 501; the second electrode 502 is disposed in the hand-held area of the body 10, so as to be in contact with the skin (such as the skin of the hand) of other parts of the human body, and compared with the bipolar radio frequency or multipolar radio frequency adopted by most hand-held radio frequency cosmetic instruments, the loop length between the first electrode 501 and the second electrode 502 can be greatly increased, and meanwhile, the radio frequency energy of the radio frequency signal can be radiated downwards from the epidermis to reach the dermis layer and part of the subcutaneous layer of the skin of the target part of the human body, so that the three-dimensional heating is performed on the deep tissue of the skin, and the collagen and/or the fiber of the skin are activated. Thus, the penetration depth of the radio frequency energy is deeper, and the radio frequency energy can penetrate deep into the skin, so that the skin tightening effect of the device is improved.

In addition, since the surface of the first electrode 501 has a dielectric film, during the use of the device, the rf energy of the rf signal can be coupled into the target site through the equivalent capacitance generated between the first electrode 501 and the target site by the dielectric film, so that the pricking feeling of the electrode directly acting on the skin can be reduced, and the first electrode 501 having the dielectric film on the surface can also enable the rf energy to be more uniformly distributed on the surface of the first electrode 501 compared with the non-capacitive electrode, thereby acting on the target site more uniformly.

It is understood that the current frequency of the rf signal and the output power of the rf signal are not particularly limited in this application. As an example, the current frequency of the radio frequency signal may be 300kHz or more; for example, the current frequency of the radio frequency signal may be 300kHz, 500kHz, 1MHz, or the like. Preferably, the current frequency of the radio frequency signal may be 3MHz or more; for example, the current frequency of the radio frequency signal may be 3MHz, 5MHz, 6MHz, 10MHz, 50MHz, 100MHz, 300MHz, or the like.

In one embodiment, the current frequency of the radio frequency signal is 6.78MHz.

As an example, the output power of the radio frequency signal may be 2W to 30W; for example, the output power of the RF signal may be 2W, 5W, 10W, 15W, 30W, etc.

Meanwhile, the hand-held portion 102 of the hand-held beauty device can be at least partially used as the second electrode 502, so that when the user holds the hand-held portion 102 to use the device, the hand can naturally contact the second electrode 502, and a complete loop is formed, so that the radio frequency signal can be normally transmitted to the target site, the second electrode 502 is not required to be additionally arranged, and the convenience of the user and the portability of the device are greatly improved.

Referring to fig. 3, fig. 3 compares the electric field distribution of the surface of a metal electrode (also called a non-capacitive electrode) without a dielectric film on the surface with the surface of a first electrode (also called a capacitive electrode) with a dielectric film on the surface. Wherein (a) in fig. 3 illustrates a front view of the electric field distribution of the surface of the metal electrode without the dielectric film on the surface, and (b) in fig. 3 illustrates a top view of the electric field distribution of the surface of the metal electrode without the dielectric film on the surface; fig. 3 (c) is a front view showing the electric field distribution of the first electrode surface having the dielectric film on the surface, and fig. 4 (d) is a top view showing the electric field distribution of the first electrode surface having the dielectric film on the surface; arrow lines are electric field line distribution. Compared with the scheme of using the non-capacitive electrode, the first electrode with the dielectric film on the surface can enable the electric field to be not limited to the edge and the corner of the electrode, so that the electric field distribution is more uniform, and the pricking and uncomfortable feeling caused by overlarge local current of the electrode can be effectively prevented.

The form of the rf power amplification module 30 is not particularly limited in this application. As an example, a class E power amplifier may be used as the radio frequency power amplifying module 30, but is not limited to.

The above-described hand-held cosmetic device can have higher radio frequency signal output efficiency by employing a class E power amplifier as the radio frequency power amplifying module 30, compared to the scheme employing a conventional push-pull circuit design in the radio frequency power amplifying module 30. Meanwhile, the class E power amplifier is easier to expand, and the design complexity is smaller.

In this application, the impedance on the loop through which the rf signal normally passes to the target site may be referred to as the circuit impedance. Referring to fig. 4, in one embodiment, the handheld cosmetic device may further include an impedance matching module 60. The impedance matching module 60 is connected to the rf power amplifying module 30, and can be used to match the impedance of the target portion with the impedance of the circuit, so that the output efficiency of the circuit is greater than or equal to 50%.

Because the impedance of the target part on different human bodies (for convenience of description, the impedance of the target part in the application is also called human body impedance) has larger difference, when the human body impedance is changed due to factors such as skin conductivity, the radio frequency energy cannot be well coupled into the skin through the coupling capacitance between the first electrode and the skin of the human body, and the treatment effect of the equipment is affected; in addition, according to the law of conservation of energy, the part of radio frequency energy is also dissipated from the equipment in the form of heat energy, so that the equipment heats, and the working stability of the equipment is affected. According to the handheld cosmetic device, the impedance of different target parts on the human body can be matched with the circuit impedance through the impedance matching module 60, so that the radio frequency energy can be effectively coupled into the skin, and the treatment effect of the device is further ensured.

It can be appreciated that any impedance matcher used in the technical field of the existing electronic device can be adopted as the impedance matching module 60, so that the specific structure of the impedance matching module 60 will not be described herein.

With continued reference to FIG. 4, in one embodiment, the impedance matching module 60 may include a pi-type impedance matchAnd (5) matching a circuit. In the pi-type impedance matching circuit, the variable capacitance C can be changed ₁ And C ₂ Is used for realizing impedance matching.

In the handheld cosmetic device, the impedance matching module 60 adopts pi-type impedance matching circuit design, has high compatibility, and can match human body impedance and circuit impedance which are changed in a large range.

The structure, shape, and size of the first electrode 501 are not particularly limited in this application. In one embodiment, the first electrode 501 may comprise a flexible circuit board.

The flexible circuit board may include a flexible substrate layer, and a first electrode disposed on the flexible substrate layer and connected to the rf power amplification module 30. As an example, the first electrode may be a metal electrode or other conductive material.

At present, most handheld radio frequency beauty instruments have the metal electrode directly contacted with skin, and in the process of using equipment, radio frequency current directly acts on a human body, so that stinging and uncomfortable feeling are easy to generate.

The dielectric thin film layer is attached to the surface of the first electrode of the handheld cosmetic device, and the dielectric thin film layer can be used for generating an equivalent capacitance between the first electrode 501 and the target part, so that the first electrode is not directly contacted with the surface of a human body, and radio frequency energy is coupled into the skin through the equivalent capacitance between the first electrode and the skin of the human body, so that the stinging and uncomfortable feeling caused by overlarge local current of the electrode can be effectively prevented.

The material of the dielectric thin film is not particularly limited in this application. As an example, the dielectric film may be made of, but not limited to, an insulating material. As an example, the foregoing insulating material may include one or more of Polyimide (PI), polycarbonate (PC), polypropylene (PP), polyamide (PA), polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), or the like.

In one embodiment, the dielectric film may include a first dielectric film layer and a second dielectric film layer. The first dielectric film layer is positioned on the surface of the first electrode, and the second dielectric film layer is positioned on the surface of the first dielectric film layer; and the thickness of the first thin film layer should be less than the thickness of the second dielectric thin film layer.

The handheld beauty equipment is provided with the first dielectric film layer on the surface of the first electrode, and the first dielectric film layer can be used for generating a coupling capacitance between the first electrode 501 and the target part, so that the first electrode is not directly contacted with the surface of a human body, and radio frequency energy is coupled into the skin through the coupling capacitance between the first electrode and the skin of the human body, so that the stinging and uncomfortable feeling caused by the overlarge local current of the electrode can be effectively prevented.

The surface of the first medium film layer of the handheld cosmetic device is also provided with the second medium film layer, the effect of equivalent capacitive coupling can be further increased by adding the second medium film layer compared with the single-layer medium film layer, the uniformity of radio frequency energy distribution is further improved, the use experience of the device is further improved, and when the thickness of the second medium film layer is larger than that of the first medium film layer, the improvement effect is more remarkable.

Meanwhile, the second dielectric film layer can also play a role in protecting the first dielectric film layer and the first electrode, so that the stability of the handheld cosmetic equipment in the daily use process and the comfort of the face of a user in the sliding treatment are improved.

The thickness and the area of the first dielectric thin film layer and the second dielectric thin film layer are not particularly limited. As an example, the thickness of the first dielectric thin film layer is 0.01 to 0.1mm; for example, the thickness of the first dielectric film layer may be 0.01mm, 0.03mm, 0.05mm, 0.07mm, 0.1mm, or the like. As an example, the thickness of the second dielectric thin film layer may be 0.05mm to 1mm; for example, the thickness of the second dielectric film layer may be 0.05mm, 0.1mm, 0.25mm, 0.5mm, 0.75mm, or 1mm.

As an example, the areas of the first dielectric thin film layer and the second dielectric thin film layer may be the same as the area of the first electrode 501.

The materials of the first dielectric thin film layer and the second dielectric thin film layer are not particularly limited. As an example, the first dielectric film layer may include a polyimide film, and the second dielectric film layer may include a polycarbonate film.

The structure and size of the second electrode 502 are not particularly limited. As an example, the equivalent area of the second electrode may be not less than 1cm ² The method comprises the steps of carrying out a first treatment on the surface of the For example, the equivalent area of the second electrode may be 2cm ² 、4cm ² Or 6cm ² Etc.

The second electrode 502 of the hand-held cosmetic device has an effective area of not less than 1cm for contacting with skin at other parts of human body ² This prevents the second electrode 502 from overheating and causing discomfort to the user during use of the device.

Preferably, the equivalent area of the second electrode may be not less than 8cm ² The method comprises the steps of carrying out a first treatment on the surface of the For example, the equivalent area of the second electrode may be 8cm ² 、10cm ² 、12cm ² 、14cm ² Or 16cm ² Etc.

It should be noted that, the second electrode 502 should be disposed in accordance with the shape of the hand-held portion 102, and the equivalent area of the second electrode 502 may refer to a planar area of the second electrode 502 after being unfolded in a plane.

In one embodiment, the handpiece 102 may be integrally formed as the second electrode 502; on this basis, the material of the housing of the hand-held portion 102 is a conductive material.

The manner of generating the dc signal a is not particularly limited in the present application with respect to the power module 20. As examples, the manner of generating the dc signal a may include, but is not limited to, converting the ac signal into the dc signal a supplied to the rf power amplifying module 30 using a power adapter, or directly outputting the dc signal a using a battery.

With continued reference to fig. 1, in one embodiment, the power module 20 may include a power adapter 201. The power adapter 201 may be used to convert an ac signal into a dc signal a that is delivered to the rf power amplification module 30.

In another possible embodiment, the power module 20 may include a charging circuit, a boost circuit, and a battery connected to the charging circuit and the boost circuit. The charging circuit is connected with the battery and can be used for charging the battery. The battery may output an initial dc signal to the boost circuit. The boost circuit may boost the initial dc signal by means of, but not limited to, a charge pump to generate the dc signal a for supply to the rf power amplification module 30.

With continued reference to fig. 1, in one embodiment, the rf power amplification module 30 may include an rf transistor 301 and a tuning circuit 302.

The rf transistor 301 is connected to the power module 20 and the control module 40, and the control module 40 can control the rf transistor 301 to convert the dc signal a into the rf signal. The tuning circuit 302 is disposed in a connection path between the rf transistor 301 and the first electrode 501 and the second electrode 502, and can be used for tuning an rf signal.

The generation parameters, specifically including which signal parameters, are not limited to the control module 40. As an example, the generation parameters may include, but are not limited to, a current frequency of the radio frequency signal, an output power of the radio frequency signal, and a waveform of the radio frequency signal.

With continued reference to fig. 1, in one embodiment, the control module 40 may include a switching unit 401 and a micro-control unit 402.

Wherein the switching unit 401 may be used to generate a switching signal and/or a gear signal in response to a human motion. The micro control unit 402 is connected to the switch unit 401, the rf power amplification module 30, and the electrode module 50, and may be used to control the rf power amplification module 30 according to the switch signal and/or the gear signal.

In some other possible embodiments, the control module 40 may also include a display unit. The display unit is connected to the micro control unit 402 for displaying the current state of the switch and/or the current gear. The display unit can also be used for displaying power supply information; for example, when the power module 20 directly outputs the direct current signal a using a battery, the display unit may be used to display battery status information.

The control module 40 may also include an alarm unit. The alarm unit is connected to the micro control unit 402 for giving an alarm when an abnormality occurs in the on/off process or an abnormality occurs in the use of the apparatus. As an example, the alarm unit may include, but is not limited to, a buzzer that may sound to alarm when an abnormality occurs during the on/off process or during the use of the device.

The control module 40 may also include a communication unit. The communication unit is connected to the micro control unit 402 for enabling a communication connection between the control module 40 and other modules in the device.

With continued reference to fig. 1, in one embodiment, the electrode module 50 may further include a temperature monitoring unit 503 and a touch detection unit 504 respectively connected to the control module 40.

The temperature monitoring unit 503 may be integrated in the first electrode 501, and is configured to monitor the temperature of the target site in response to a control command of the control module 40, so as to prevent the skin of the target site from being scalded due to overheating of the first electrode 501. The touch detection unit 504 is connected to the second electrode 502, and may be used to detect whether the second electrode 502 is in contact with the hand in response to a control instruction of the control module 40.

The handheld cosmetic equipment can monitor the temperature of the surface of the target part in real time in the use process so as to prevent scalding caused by overheating. Meanwhile, it is also possible to detect whether the second electrode 502 is always in contact with the hand.

Specifically, the temperature of the target site may be monitored by the temperature monitoring unit 503 during use of the device. When the temperature monitored by the temperature monitoring unit 503 exceeds the preset threshold temperature, the output power of the radio frequency signal can be reduced, or the output of the radio frequency signal can be turned off, so as to avoid scalding the skin of the target part of the human body.

The implementation form of the touch detection unit 504 is not particularly limited in this application. In one embodiment, the touch detection unit 504 may include a touch sensor that may be disposed at the second electrode 502 for detecting whether the second electrode 502 is in contact with the human hand. As an example, the touch sensor may include, but is not limited to, a capacitive touch sensor that may detect whether the second electrode 502 is in contact with a human hand by measuring a change in capacitance between the second electrode 502 and ground. Further, when it is detected that the second electrode 502 is not in contact with the hand of the human body, the output of the radio frequency signal can be turned off, so as to avoid waste caused by continuous invalid operation of the device.

In the description of the present specification, reference to the terms "some embodiments," "other embodiments," "ideal embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims

1. The handheld cosmetic equipment is characterized by comprising a machine body, and a power supply module, a control module, a radio frequency power amplification module and an electrode module which are respectively arranged in the machine body; wherein the method comprises the steps of

2. The handheld cosmetic device of claim 1, further comprising an impedance matching module;

3. The handheld cosmetic apparatus of claim 2 wherein the impedance matching module comprises a pi-type impedance matching circuit.

4. A hand-held beauty treatment device according to claim 3, characterised in that the frequency of the radio frequency signal is 3MHz or more.

5. The handheld cosmetic apparatus of claim 4 wherein the radio frequency signal has a frequency of 6.78MHz.

6. The handheld cosmetic apparatus of claim 1 wherein the radio frequency circuit amplification module comprises a class E power amplifier.

7. The hand-held beauty device of claim 1, wherein an equivalent area of the second electrode is not less than 1cm ² 。

8. The hand-held beauty treatment device of claim 7, wherein the equivalent area of the second electrode is not less than 8cm ² 。

9. The hand-held beauty apparatus of claim 1 wherein the hand-held portion is integrally formed as a second electrode and the material of the hand-held portion comprises a conductive material.

10. The handheld cosmetic apparatus of claim 1 wherein the dielectric film comprises a first dielectric film layer and a second dielectric film layer; the first dielectric film layer is positioned on the surface of the first electrode, and the second dielectric film layer is positioned on the surface of the first dielectric film layer; the thickness of the first film layer is smaller than that of the second dielectric film layer.

11. The hand-held beauty treatment device of claim 10, wherein the thickness of the first dielectric film layer is 0.01-0.1 mm and the thickness of the second dielectric film layer is 0.05-1 mm.

12. The hand-held beauty treatment device of claim 10, wherein the dielectric film comprises polyimide, polycarbonate, polypropylene, polyamide, polymethyl methacrylate and/or polyethylene terephthalate.

13. The handheld cosmetic apparatus of claim 10 or 12 wherein the first dielectric film layer comprises a polyimide film and the second dielectric film layer comprises a polycarbonate film.

14. The hand-held beauty treatment device of claim 1, wherein the electrode module further comprises a temperature monitoring unit and a touch detection unit respectively connected with the control module; wherein the method comprises the steps of

the touch detection unit is connected with the second electrode and is used for responding to the control instruction of the control module and detecting whether the second electrode is in contact with the hand.

15. The handheld cosmetic apparatus of claim 1 wherein the first electrode is removably disposed on the treatment head;

16. The handheld cosmetic apparatus of claim 1, wherein the control module comprises:

17. The handheld cosmetic apparatus of claim 1 wherein the power module comprises a power adapter;

18. The handheld cosmetic apparatus of claim 1 wherein the radio frequency power amplification module comprises a radio frequency transistor and a tuning circuit; wherein the method comprises the steps of