CN211862953U - Protection device for radio frequency cosmetic instrument and radio frequency cosmetic instrument - Google Patents
Protection device for radio frequency cosmetic instrument and radio frequency cosmetic instrument Download PDFInfo
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- CN211862953U CN211862953U CN201921327783.9U CN201921327783U CN211862953U CN 211862953 U CN211862953 U CN 211862953U CN 201921327783 U CN201921327783 U CN 201921327783U CN 211862953 U CN211862953 U CN 211862953U
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- power supply
- beauty instrument
- resistance sensor
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Abstract
The utility model discloses a protective device for a radio frequency beauty instrument, which belongs to the field of beauty equipment, wherein the radio frequency beauty instrument comprises a working power supply, a radio frequency plate and a radio frequency handle which are connected with each other, and the protective device comprises a safety power supply, a transfer relay, a resistance sensor and a detection circuit; the movable contact of the conversion relay is used for connecting the radio frequency board, and the resistance sensor is connected on the radio frequency board between the movable contact and the radio frequency handle; the safety power supply is connected to one static contact of the switching relay, and the other static contact of the switching relay is used for connecting the working power supply; the detection circuit comprises an amplifier, a reference voltage and a voltage comparator, wherein one end of the amplifier is electrically connected with the resistance sensor, the other end of the amplifier and the reference voltage are respectively connected to two input ends of the voltage comparator, the output end of the voltage comparator is connected with a driver, and the driver is electrically connected with the input part of the conversion relay. The utility model relates to a rationally, can effectually play the condition emergence that the protection skin is not scalded by the radio frequency.
Description
Technical Field
The utility model relates to a beauty equipment field, in particular to radio frequency beauty instrument is with protection device and radio frequency beauty instrument.
Background
The radio frequency beauty technology is that radio frequency waves penetrate a barrier of a melanocyte at the basal layer of the epidermis to heat collagen fibers of the dermis to a certain temperature of 55-75 ℃, the collagen fibers shrink to tighten loose skin wrinkles, meanwhile, the heat effect causes the collagen to proliferate, the new collagen is rearranged and increased in quantity, and the aged and damaged collagen layer is repaired, so that the effects of removing wrinkles and tightening the skin are achieved.
Radiofrequency cosmetic techniques can be divided into two types, one being invasive radiofrequency, in which radiofrequency energy is introduced directly through, for example, a microneedle electrode penetrating the tissue to be treated, and the other non-invasive radiofrequency, in which a radiofrequency electrode is in contact with the epidermis and radiofrequency energy is coupled through the epidermis to the subcutaneous tissue to be treated.
Generally, an apparatus for beauty treatment using non-invasive radio frequency technology (radiofrequency beauty instrument) comprises a radiofrequency plate (for controlling the radiofrequency output) and a radiofrequency handle (for emitting radiofrequency and in direct contact with the skin) and a power source (for supplying power to the radiofrequency plate).
However, since the voltage output amplitude of the radio frequency is several hundreds of volts, the energy is very high, if the skin is instantaneously contacted or the contact area is very small under the condition of the radio frequency, the smaller the area contacted with the skin is, the higher the energy density is according to the formula of the energy density, the skin is easily damaged, and unnecessary medical accidents are caused.
In the prior art, in order to prevent the above burning accident, the temperature of the treated tissue/region/epidermis is monitored, and the rf energy or other treatment parameters are changed according to the temperature monitoring result, so as to ensure that the rf energy output is within a proper range.
Due to the characteristic of imbalance of the contact surface of the radio frequency handle (used for outputting radio frequency) in direct contact with the skin and the skin, the radio frequency handle and the skin can be in point contact or local contact, and therefore the skin is damaged due to high radio frequency energy density of the contact part; however, due to the limitation of the temperature detection means, the temperature at that location cannot be detected in time, and further burning occurs. Therefore, the burning prevention or protection method in the prior art cannot perform comprehensive and safe detection and judgment on the contact part.
SUMMERY OF THE UTILITY MODEL
Cosmetic problem that can not realize comprehensive firing condition emergence of preventing to the radio frequency that prior art exists, the utility model aims to provide a protection device for radio frequency beauty instrument.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a protective device for a radio frequency beauty instrument comprises a working power supply, a radio frequency plate and a radio frequency handle, wherein the radio frequency plate and the radio frequency handle are connected with the working power supply; the movable contact of the conversion relay is used for being connected with the radio frequency board, and the resistance sensor is connected to the radio frequency board between the movable contact and the radio frequency handle; the safety power supply is connected to one static contact of the switching relay, and the other static contact of the switching relay is used for connecting a working power supply; the detection circuit comprises an amplifier, a reference voltage and a voltage comparator, wherein one end of the amplifier is electrically connected with the resistance sensor, the other end of the amplifier and the reference voltage are respectively connected to two input ends of the voltage comparator, the output end of the voltage comparator is connected with a driver, and the driver is electrically connected with the input part of the conversion relay.
Furthermore, the device also comprises a warning device, and the warning device is electrically connected with the driver.
Preferably, the warning device is a sound generating device and/or a light emitting device.
Preferably, the light emitting device is an LED lamp.
Further, the device also comprises a radio frequency control board, wherein the driver is installed on the radio frequency control board, and the radio frequency control board is electrically connected with the output end of the voltage comparator, the input part of the conversion relay and the warning device.
Preferably, the safety power supply is a 10-24V detection power supply.
The utility model also provides a radio frequency beauty instrument, including working power supply, radio frequency board and radio frequency handle, still include foretell radio frequency beauty instrument and use protection device.
Preferably, the safety power supply and the resistance sensor are both connected to the radio frequency board.
When the protective device for the radio frequency beauty instrument is used, the safe power supply firstly supplies power to the radio frequency handle, when the radio frequency handle contacts the skin, the radio frequency is output to the skin, and the resistance sensor senses the current at this time;
the larger the area of the radio frequency handle in contact with the skin is, the larger the current sensed by the resistance sensor is, and the larger the voltage on the corresponding amplifier is, and on the contrary, the smaller the area of the radio frequency handle in contact with the skin is, the smaller the current sensed by the resistance sensor is, and the smaller the voltage on the amplifier is;
the voltage on the resistance sensor is amplified by an amplifier to obtain a voltage B and is connected to a voltage comparator, the voltage comparator is connected to a reference voltage C, when the voltage B is larger than or equal to the voltage C, the output end D of the voltage comparator outputs a high potential, the high potential is amplified by a driver and then is connected to the input part of the conversion relay to enable the output part to act, the radio frequency plate (radio frequency handle) is switched to a working power supply to supply power, and the warning device is lightened. The radio frequency treatment can be carried out, and the high-temperature burning condition can not occur under the condition that the radio frequency handle is tightly attached to the skin;
on the contrary, when B is less than C, D outputs a low potential which does not affect the driver, the driver cannot affect the output part of the driver through the input part of the conversion relay (namely, the output part of the conversion relay is in an initial state, the safe power supply continues to supply power to the radio frequency handle), and the warning device lamp is not lighted, so that the operator continues to control the radio frequency handle to change the position and searches for the position where the radio frequency handle is tightly attached to the skin.
By adopting the technical scheme, the contact area of the radio frequency handle and the skin is reflected in a voltage mode due to the arrangement of the safe power supply and the resistance sensor; the amplifier, the voltage comparator and the reference voltage are arranged, so that the safety value of the contact area of the radio frequency handle and the skin can be freely set and detected by adjusting the magnitude of the reference voltage.
Drawings
Fig. 1 is a schematic circuit structure diagram of a protective device for a radio frequency beauty instrument of the present invention;
fig. 2 is a schematic structural diagram of a detection circuit in the protection device for a radio frequency beauty instrument of the present invention.
In the figure, 1-radio frequency handle, 2-safety power supply, 3-resistance sensor, 5-reference voltage, 6-voltage comparator, 7-radio frequency control board, 71-driver, 8-conversion relay, 9-warning device, 11-amplifier, 12-radio frequency board, 13-working power supply and 14-switch.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 and 2, a protection device for a radio frequency beauty instrument is generally used with a radio frequency beauty instrument, the radio frequency beauty instrument comprises a working power supply 13, a radio frequency plate 12 and a radio frequency handle 1, the radio frequency plate 12 is connected with the radio frequency handle 1, and the working power supply 13 is used for supplying power to the two; the protection device comprises a safety power supply 2, a conversion relay 8, a resistance sensor 3 and a detection circuit; when in use, the movable contact of the conversion relay 8 is used for being connected with the radio frequency board 12, and when in use, the resistance sensor 3 is connected on the radio frequency board 12 between the movable contact and the radio frequency handle 1, and the resistance sensor 3 is used for detecting the current/voltage on a path; the safety power supply 2 is connected to one static contact of the switching relay 8, and the other static contact of the switching relay 8 is used for connecting the working power supply 13; usually, the working power supply 13 and the safety power supply 2 are both powered by mains supply, the safety power supply 2 is a 10-24V detection power supply, preferably 24V, and the working power supply 13 is a 100V power supply.
The detection circuit comprises an amplifier 11, a reference voltage 5, a voltage comparator 6, a driver 71 and a radio frequency control board 7, wherein one end of the amplifier 11 is electrically connected with the resistance sensor 3 and is used for amplifying the voltage on the resistance sensor 3, the other end of the amplifier 11 and the reference voltage 5 are respectively connected to two input ends of the voltage comparator 6, and the radio frequency control board 7 is connected to the output end of the voltage comparator 6; the radio frequency control board 7 is provided with a driver 71, and the driver 71 is electrically connected with the input part of the switching relay 8.
By setting the value of the reference voltage 5, when the contact area S between the radio frequency handle 1 and the skin meets the requirement, the voltage comparator 6 outputs a high potential to prompt the radio frequency control board 7 to control the driver 71 to amplify the current to a degree capable of driving the transfer relay 8, so that the output part of the transfer relay 8 switches the circuit, and the working power supply 13 is connected to the radio frequency handle 1.
In order to more intuitively know whether the contact area S between the rf handle 1 and the skin meets the requirement, in this embodiment, the rf handle further includes a warning device 9, the warning device 9 is connected to the driver 71, and when the voltage comparator 6 outputs a high voltage, the driver 71 simultaneously enables the warning device 9 to respond, so that the operator can determine whether the contact area S between the rf handle 1 and the skin meets the requirement. The warning device 9 may be a sound generating device and/or a light emitting device, and the present embodiment is preferably an LED lamp.
The utility model also provides a radio frequency beauty instrument, including working power supply 13, radio frequency handle 1 and radio frequency board 12, still include foretell radio frequency beauty instrument and use protection device, safe power supply 2, resistance sensor 3 installation during the use or do not install on radio frequency board 12 all can, but preferred safe power supply 2 and resistance sensor 3 all install and use on radio frequency board 12 in this embodiment.
Before the protective device for the radio frequency beauty instrument and the radio frequency beauty instrument are used, the output part of the transfer relay 8 enables the safety power supply 2 to be connected with the radio frequency handle 1, the 24V detection power supply firstly supplies power for the radio frequency handle 1, when the radio frequency handle 1 contacts with the skin, the radio frequency is output to the skin, and at the moment, the resistance sensor 3 senses the current;
the larger the contact area S between the radio frequency handle 1 and the skin is, the larger the current sensed by the resistance sensor 3 is, and the larger the voltage on the corresponding amplifier 11 is, on the contrary, the smaller the contact area S between the radio frequency handle 1 and the skin is, the smaller the current sensed by the resistance sensor 3 is, and the smaller the voltage on the amplifier 11 is;
the voltage on the resistance sensor 3 is amplified by an amplifier 11 (voltage B) and then is connected to one input end of a voltage comparator 6, a reference voltage 5 (namely voltage C) is connected to the other input end of the voltage comparator 6, when B is larger than or equal to C, an output end D of the voltage comparator 6 outputs a high potential, the high potential is transmitted to a radio frequency control board 7 and then is reacted to an input part of a conversion relay 8 through a driver 71 to influence the output part of the conversion relay, so that the radio frequency handle 1 is connected to a working power supply 13, and meanwhile, a warning device 9 (an LED lamp) also sends out warning (light emitting) under the driving of the driver 71 to inform that the contact area S of the radio frequency handle 1 and the skin reaches the standard of safe treatment, so that the radio frequency treatment can be;
on the contrary, when B is less than C, D outputs a low potential, and after the low potential is transmitted to the radio frequency control board 7, the radio frequency control board 7 does not respond to the driver 71, so that the input part of the transfer relay 8 is not influenced, and the warning device 9(LED lamp) does not influence or respond (does not emit light), so that the effect of informing that the contact area S of the radio frequency handle 1 and the skin cannot reach the standard of safe treatment is achieved, the radio frequency treatment cannot be carried out, an operator is prompted to continuously control the radio frequency handle 1 to change the position, and the position where the radio frequency handle 1 is tightly attached to the skin is searched.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (8)
1. The utility model provides a protection device for radio frequency beauty instrument, radio frequency beauty instrument includes working power supply and radio frequency board and the radio frequency handle that links to each other, its characterized in that: the protection device comprises a safety power supply, a conversion relay, a resistance sensor and a detection circuit; the movable contact of the conversion relay is used for being connected with the radio frequency board, and the resistance sensor is connected to the radio frequency board between the movable contact and the radio frequency handle; the safety power supply is connected to one static contact of the switching relay, and the other static contact of the switching relay is used for connecting a working power supply; the detection circuit comprises an amplifier, a reference voltage and a voltage comparator, wherein one end of the amplifier is electrically connected with the resistance sensor, the other end of the amplifier and the reference voltage are respectively connected to two input ends of the voltage comparator, the output end of the voltage comparator is connected with a driver, and the driver is electrically connected with the input part of the conversion relay.
2. The device for protecting a radio frequency beauty instrument according to claim 1, wherein: still include alarm device, alarm device with the driver electricity is connected.
3. The device for protecting a radio frequency beauty instrument according to claim 2, wherein: the warning device is a sound generating device and/or a light emitting device.
4. The device for protecting a radio frequency beauty instrument according to claim 3, wherein: the light emitting device is an LED lamp.
5. The device for protecting a radio frequency beauty instrument according to claim 4, wherein: the driver is installed on the radio frequency control board, and the radio frequency control board is electrically connected with the output end of the voltage comparator, the input part of the conversion relay and the warning device.
6. The device for protecting a radio frequency beauty instrument according to claim 1, wherein: the safety power supply is a 10-24V detection power supply.
7. A radio frequency beauty instrument is characterized in that: comprising a protective device for a radiofrequency beauty instrument as defined in any one of claims 1 to 6.
8. The radio frequency cosmetic instrument of claim 7, wherein: the safety power supply and the resistance sensor are both arranged on the radio frequency board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921327783.9U CN211862953U (en) | 2019-08-16 | 2019-08-16 | Protection device for radio frequency cosmetic instrument and radio frequency cosmetic instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921327783.9U CN211862953U (en) | 2019-08-16 | 2019-08-16 | Protection device for radio frequency cosmetic instrument and radio frequency cosmetic instrument |
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| Publication Number | Publication Date |
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| CN211862953U true CN211862953U (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921327783.9U Active CN211862953U (en) | 2019-08-16 | 2019-08-16 | Protection device for radio frequency cosmetic instrument and radio frequency cosmetic instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117872916A (en) * | 2024-01-24 | 2024-04-12 | 深圳艾摩米智能科技有限公司 | Radio frequency signal control circuit |
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2019
- 2019-08-16 CN CN201921327783.9U patent/CN211862953U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117872916A (en) * | 2024-01-24 | 2024-04-12 | 深圳艾摩米智能科技有限公司 | Radio frequency signal control circuit |
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