CN115671561A - Radio frequency device - Google Patents

Abstract

The invention provides a radio frequency device, which comprises a shell, at least one pair of electrodes, an elastic part and a position adjusting mechanism, wherein the elastic part is arranged on the shell; each pair of electrodes comprises two radio frequency electrodes which are distributed at intervals, all the radio frequency electrodes are arranged on the shell, and the elastic part is arranged in the shell and is abutted against the radio frequency electrodes; the position adjusting mechanism is abutted against the elastic part, is at least partially arranged in the shell and is used for adjusting the position of the elastic part. The invention can automatically adjust to ensure that each radio frequency electrode can be attached to the skin, can ensure that the depths of all the radio frequency electrodes pressed into the skin are basically the same, and ensures that the cosmetic effects of different radio frequency electrodes are basically the same, so that the stability, uniformity and safety of the radio frequency device are better, the cosmetic effect of the radio frequency device is finally improved, and the user experience is improved.

Description

Radio frequency device

Technical Field

The invention relates to the field of beauty equipment, in particular to a radio frequency device.

Background

The existing radio frequency device heats the dermis layer of the skin mainly by injecting certain radio frequency energy into the dermis layer of the skin, the heating temperature of the local dermis layer of the skin is increased to cause false wound, then a human body can quickly repair the skin which generates the false wound, and the regeneration and remodeling of collagen are stimulated, so that the quantity of the regenerated collagen is increased, the arrangement is tighter, the normal lines and the forehead lines can be improved, and the face is more compact and elastic.

Most radio frequency devices on the market all need the angle of pasting of manual regulation radio frequency electrode and skin when using at present, and can only make the radio frequency electrode paste with the mode of perpendicular to skin and paste to guarantee that all radio frequency electrodes homoenergetic and skin contact, not only the user operation is very inconvenient, and the user mode is limited moreover, causes often that the degree of depth that different radio frequency electrodes impressed the skin is different, influences cosmetic effect. Because a human face or a part needing to be acted may be a curved surface, and the head of the radio frequency electrode is usually in an arc-shaped structure, when the radio frequency device contacts the skin, the radio frequency electrode is pressed into the skin at different depths, namely different impedances, due to different skin pressures, so that different radio frequency electrodes have different beauty effects during working, and further, the radio frequency device is poor in stability and uniformity and has certain potential safety hazards.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention aims to provide a radio frequency device, which can be automatically adjusted to enable each radio frequency electrode to be attached to the skin, so that the use by a user is more convenient and more flexible, the depths of all the radio frequency electrodes pressed into the skin can be basically the same, the beautifying effects of different radio frequency electrodes are basically the same, the stability, uniformity and safety of the radio frequency device are better, the beautifying effect of the radio frequency device is finally improved, and the user experience is improved.

In order to achieve the above object, the present invention provides a radio frequency device, comprising a housing, at least one pair of electrodes, an elastic part, and a position adjusting mechanism; each pair of electrodes comprises two radio frequency electrodes which are distributed at intervals, and all the radio frequency electrodes are arranged on the shell; the elastic part is arranged in the shell and is abutted with the radio-frequency electrode; the position adjusting mechanism is abutted to the elastic part and at least partially arranged in the shell, and is used for adjusting the position of the elastic part.

Optionally, the radio frequency device comprises more than two pairs of the electrodes, each pair of the electrodes comprises two radio frequency electrodes with opposite polarities; each radio-frequency electrode is abutted with one corresponding elastic part, and the position of each elastic part is adjusted through one corresponding position adjusting mechanism.

Optionally, the position adjusting mechanism includes an adjusting portion and a supporting portion, the supporting portion is disposed at one end of the elastic portion and is used for abutting against the elastic portion, and the adjusting portion is in transmission connection with the supporting portion to drive the supporting portion to move along the axial direction of the housing, so as to adjust the position of the elastic portion.

Optionally, the adjusting part is in threaded transmission connection with the supporting part.

Optionally, the supporting portion includes an elastic supporting member and a moving platform, the adjusting portion includes a screw, one end of the elastic supporting member is connected to the elastic portion, the other end of the elastic supporting member is connected to the moving platform, and the moving platform is in threaded transmission connection with the screw.

Optionally, the mobile platform is provided with a boss, and the elastic support member is sleeved on the boss; the radio frequency device further comprises a pressure sensor for identifying the pressure of the elastic support member, wherein the pressure sensor is arranged on the inner surface or the outer surface of the elastic support member.

Optionally, the radio frequency electrode comprises an axially connected protrusion and a shielding part, the protrusion being for contacting a predetermined object; a through hole is formed in the end face of the shell;

the radio frequency device also comprises a fixing part which penetrates through the through hole and is fixedly connected with the through hole; an accommodating space is formed inside the fixing part, one end of the accommodating space is opened, and the other end of the accommodating space is closed;

the shielding part and the elastic part are arranged in the accommodating space, and the protruding part is arranged outside the accommodating space;

the maximum cross-sectional area of the shield is larger than the cross-sectional area of the opening.

Optionally, the shape of the opening matches the shape of the protruding part, and the protruding part is penetrated through the opening and abuts against the inner side wall of the opening, so that the protruding part and the fixing part are sealed.

Optionally, the maximum cross-sectional area of the opening is greater than the cross-sectional area of the protruding portion to enable the protruding portion to rotate relative to the fixed portion.

Optionally, the radio frequency device further includes a pressure sensor and a control unit, which are communicatively connected;

the pressure sensor is arranged on the elastic part or the position adjusting mechanism and is used for identifying the pressure of the elastic part and generating pressure information;

the control unit is used for controlling the position adjusting mechanism to adjust the position of the elastic part according to the pressure information of the elastic part.

Optionally, the control unit is further configured to determine whether an actual pressure value of the elastic portion is within a preset pressure range;

and if the actual pressure value of the elastic part is not within the preset pressure range, the control unit controls the position adjusting mechanism to adjust the position of the elastic part.

Optionally, the position adjusting mechanism includes an adjusting portion, a supporting portion and a driving portion; the driving part is connected with the adjusting part and is used for driving the adjusting part to move;

the supporting part is arranged at one end of the elastic part and is used for being abutted against the elastic part; the adjusting part is in transmission connection with the supporting part to drive the supporting part to move along the axial direction of the shell so as to adjust the position of the elastic part.

Optionally, the driving part comprises a gear box and a motor, the motor is used for outputting power to the gear box, and the gear box is connected with the adjusting part to drive the adjusting part to rotate;

the control unit is in communication connection with the motor and is used for controlling the running state of the motor according to the pressure information of the elastic part.

According to the invention, the elastic part is arranged on the radio frequency device, so that the radio frequency electrode can transmit pressure to the elastic part when being pressed by skin, and the radio frequency electrode can be compressed as required when being attached to the skin, thereby ensuring that all the radio frequency electrodes can be attached to the skin at the same time, and the radio frequency device is more flexible and convenient to use. Meanwhile, the position of each radio frequency electrode in the compression direction can be adjusted through the position adjusting mechanism, so that the depths of all the radio frequency electrodes pressed into the skin are basically the same, and due to the structure, the radio frequency energy in different areas of the radio frequency device can be distributed more uniformly, the stability, uniformity and safety of the radio frequency device are better, the cosmetic effect of the radio frequency device is finally improved, and the user experience is improved.

Drawings

FIG. 1 is a graph of impedance between an RF electrode and skin at different skin pressures;

FIG. 2 is a schematic diagram of a single RF electrode in accordance with a preferred embodiment of the present invention;

FIG. 3 is a schematic diagram of an RF device according to a preferred embodiment of the present invention;

FIG. 4 isbase:Sub>A cross-sectional view of the RF device of FIG. 3 taken along line A-A;

FIG. 5 is a graph of the cosmetic effect of the RF device on skin at different RF electrode spacings;

fig. 6 is a block diagram of an rf device according to a preferred embodiment of the present invention.

The reference numerals are preferably as follows:

a radio frequency device 1; a housing 11;

a through-hole 111; a radio frequency electrode 2;

a first radio frequency electrode 21; a second radiofrequency electrode 22;

a protruding portion 23; a shielding portion 24;

a fixed part 3; the accommodating space 31;

an opening 32; an elastic part 4;

a position adjusting mechanism 5; an adjustment section 51;

a screw 511; a support portion 52;

an elastic support member 521; a mobile platform 522;

threads 5221; a boss 5222;

a drive section 53; a motor 531;

a gearbox 532; a pressure sensor 6;

a control unit 7; a temperature sensor 8.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; either directly or through an intermediary, may be internal to the two elements or may be in an interactive relationship with the two elements unless specifically limited otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. Herein, "axial" refers to the telescopic direction of the radio frequency electrode; the "transverse" direction is perpendicular to the "axial" direction.

Existing rf devices often have the rf electrode directly affixed to the housing such that the rf electrode cannot move relative to the housing. Therefore, when the radio frequency device is used, each radio frequency electrode can be simultaneously attached to the skin only by manually adjusting or rotating the whole radio frequency device by a user, and the attachment mode can only be vertical attachment, so that the use is very inconvenient, and meanwhile, different radio frequency electrodes are pressed into the skin at different depths, and the beauty effect is affected.

Please refer to fig. 1, which is a graph of impedance between the rf electrode and the skin under different skin pressures, wherein the x-axis is the skin pressure applied to the rf electrode, and the y-axis is the impedance between the rf electrode and the skin. As shown in fig. 1, when the rf electrode is attached to the skin, the attached skin generates impedance, the rf electrode with opposite polarity generates heat around the skin, the skin pressure applied to the rf electrode is inversely proportional to the impedance generated between the rf electrode and the skin, and the skin pressure applied to each rf electrode is different, which results in different attachment depths of each rf electrode and the skin, and the impedance generated between each rf electrode and the skin is different, so that the magnetic field and the rf energy generated around each rf electrode are different, which affects the stability and uniformity of the rf electrode and brings serious safety hazard to the rf device.

In order to solve the technical problems in the prior art, the invention provides a novel radio frequency device.

Exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following embodiments, features of the embodiments can be supplemented with each other or combined with each other without conflict.

Fig. 2 isbase:Sub>A schematic structural diagram ofbase:Sub>A single rf electrode according tobase:Sub>A preferred embodiment of the present invention, fig. 3 isbase:Sub>A schematic structural diagram of an rf device according tobase:Sub>A preferred embodiment of the present invention, and fig. 4 isbase:Sub>A cross-sectional view of the rf device shown in fig. 3 along the linebase:Sub>A-base:Sub>A.

As shown in fig. 2 to 4, the present invention provides a radio frequency device 1 including a housing 11, at least one pair of electrodes, an elastic portion 4, and a position adjustment mechanism 5. Each pair of electrodes comprises two spaced apart radio frequency electrodes 2, and preferably each pair of electrodes comprises two radio frequency electrodes 2 of opposite polarity. All rf electrodes 2 are movably arranged on the housing 11. Furthermore, each radio frequency electrode 2 can be limited by the fixing part 3 so as to prevent the radio frequency electrode 2 from falling off the shell 11, and the fixing part 3 is fixedly arranged on the shell 11. One end of each radio frequency electrode 2 is for contacting the skin and the other end is for abutting (including being connected or not connected) the flexible portion 4. The elastic part 4 is arranged in the shell 11 and is used for providing elastic force to enable the radio-frequency electrode 2 to move telescopically relative to the shell 11; therefore, when the radio-frequency electrode 2 is used by a user, the radio-frequency electrodes 2 can be compressed in different degrees according to needs, so that each radio-frequency electrode 2 can be attached to the skin, namely all the radio-frequency electrodes 2 can be simultaneously contacted with the skin without manual adjustment of the user, and the operation steps of the user are simplified. And through the elastic expansion of the elastic part 4, the radio-frequency electrode 2 is not limited to be attached in a mode of being vertical to the skin, and the use is more flexible and convenient.

In some embodiments, a recess is provided in an end face of the housing 11, and the rf electrode 2 and the spring 4 are both disposed in the recess.

In other embodiments, the radio frequency device 1 further includes a fixing portion 3, and a through hole 111 is disposed on an end surface of the housing 11, and the fixing portion 3 penetrates through the through hole 111 and is fixedly connected to the through hole 111. The fixing part 3 is internally provided with an accommodating space 31, one end of the accommodating space 31 is provided with an opening 32 for the radio frequency electrode 2 to enter and exit, and the other end of the accommodating space 31 is closed for placing the elastic part 4. A portion of the radiofrequency electrode 2 and the entire flexible portion 4 are arranged inside the housing space 31, so that the radiofrequency electrode 2 is telescopically movable with respect to the fixed portion 3 by means of the flexible portion 4.

After the elastic part 4 ensures that all the radio-frequency electrodes 2 can be contacted with the skin at the same time, the position of the elastic part 4 can be adjusted by the position adjusting mechanism 5, so as to ensure that all the radio-frequency electrodes 2 are pressed into the skin to the same depth (namely, the contact areas of the radio-frequency electrodes 2 and the skin are the same). The position adjustment mechanism 5 abuts against the elastic portion 4 and is at least partially disposed in the housing 11. The position adjusting mechanism 5 adjusts the axial position of the elastic part 4, so as to finally adjust the pressure applied to the elastic part 4, namely adjust the depth of the radio-frequency electrode 2 pressed into the skin. It will be appreciated that all rf electrodes 2 are pressed into the skin to the same depth, meaning substantially the same, and not to the absolute same, the present application allows for the same depth within the tolerance. If the depth of pressing all the radio-frequency electrodes 2 into the skin is the same, the impedance generated between all the radio-frequency electrodes 2 and the skin is the same, so that the magnetic field and the energy generated around all the radio-frequency electrodes 2 are the same, and the action effect of each radio-frequency electrode 2 on the skin is basically consistent, thereby ensuring the stability and the uniformity of the radio-frequency energy and improving the safety of the radio-frequency device.

In one embodiment, one end of the elastic part 4 abuts against the bottom of the radio frequency electrode 2, and the other end is connected with the position adjusting mechanism 5. Each rf electrode 2 is preferably in abutment with a corresponding one of the resilient portions 4, each resilient portion 4 preferably adjusting its position by a corresponding one of the position adjustment mechanisms 5. It should be understood that the present application does not limit the structure of the position adjustment mechanism 5. In an embodiment, the position adjustment mechanism 5 may be provided as an automatic adjustment device, such as an electric drive, a cylinder drive or a hydraulic drive, in which case the entire position adjustment mechanism 5 may be provided within the housing 11. In other embodiments, the position adjusting mechanism 5 may be provided as a manual driving device, such as a manually operable handle or knob provided outside the housing 11, and a mechanical adjusting mechanism connected to the handle or knob provided inside the housing 11 to change the position of the elastic portion 4, in which case a part of the position adjusting mechanism 5 is provided outside the housing 11 and a part is provided inside the housing 11.

When the radio-frequency device 1 is applied, the elastic part 4 can be used for transmitting the pressure to the elastic part 4 when each radio-frequency electrode 2 is subjected to the pressure applied to the radio-frequency electrode by the skin, and the elastic part 4 deforms to enable the radio-frequency electrode 2 to be telescopic relative to the shell 11, so that when a user uses the radio-frequency device, the radio-frequency electrodes 2 can be compressed to different degrees according to needs, and each radio-frequency electrode 2 can be attached to the skin, and the use is more flexible and convenient. Meanwhile, the invention also adjusts the attaching depth of each radio-frequency electrode 2 to the skin through the position adjusting mechanism 5, and can ensure that the skin pressure of all the radio-frequency electrodes 2 is basically the same, so that the skin pressing depth of the radio-frequency electrodes 2 is basically the same, and the radio-frequency energy generated by all the radio-frequency electrodes 2 is basically the same, namely the radio-frequency energy distribution of different areas of the radio-frequency device 1 is more uniform, the stability and uniformity of the radio-frequency device 1 are ensured, the cosmetic effect of the radio-frequency device 1 is better, the safety of the radio-frequency device 1 is improved, and the user experience is improved.

In this embodiment, each rf electrode 2 is telescopically arranged in the fixing portion 3, and a part of the rf electrode 2 is outside the fixing portion 3 and another part is inside the fixing portion 3. Preferably, the fixing portion 3 and the housing 11 are manufactured separately to reduce the difficulty of assembly. More preferably, the material of the fixing part 3 and the radio frequency electrode 2 is metal material. Because metal material's intensity is higher, stand wear and tear, can prevent wearing and tearing between radio frequency electrode 2 and the fixed part 3 to avoid producing great clearance between the two, thereby guarantee that the direction that radio frequency electrode 2 and skin were pasted in the use of radio frequency device 1 moves along the spacing direction of fixed part 3 all the time, guarantee to paste the degree of depth, improve the degree of accuracy that position control mechanism 5 adjusted. Meanwhile, the metal materials of the fixing part 3 and the radio-frequency electrode 2 can also ensure the sealing property between the radio-frequency electrode 2 and the fixing part 3, prevent rainwater and the like from polluting the space where the elastic part 4 and the position adjusting mechanism 5 are located, and finally ensure that the elastic part 4 and the position adjusting mechanism 5 can work normally.

In this embodiment, the radiofrequency device 1 comprises more than two pairs of electrodes, each pair of electrodes comprises a first radiofrequency electrode 21 and a second radiofrequency electrode 22 which are arranged in pairs and have opposite polarities, and the first radiofrequency electrode 21 and the second radiofrequency electrode 22 are distributed on the housing 11 at intervals. In this embodiment, one of the first RF electrode 21 and the second RF electrode 22 is a positive electrode and the other is a negative electrode. Preferably, all the rf electrodes 2 are symmetrically disposed around the axis of the housing 11, and usually, the positive electrodes and the negative electrodes are sequentially staggered in the circumferential direction, such as the positive electrodes, the negative electrodes, the positive electrodes, and the negative electrodes … …, and are staggered in this way, as shown in fig. 3. Therefore, the distances between each pair of positive and negative electrodes are equal, the magnetic field and the radio frequency energy generated by each radio frequency electrode 2 are basically the same, the beauty effect of each radio frequency electrode 2 on the skin is basically the same except for the magnetic field superposition area of the radio frequency electrodes 2, and the beauty effect of the radio frequency device 1 is further improved.

In this embodiment, the radiofrequency device 1 comprises two pairs of electrodes, namely two first radiofrequency electrodes 21 and two second radiofrequency electrodes 22. The four radio-frequency electrodes 2 are symmetrically distributed around the axis of the shell 11, so that the action area of the radio-frequency device 1 consisting of the four radio-frequency electrodes 2 and the skin is larger, the use efficiency of the radio-frequency device 1 can be improved, and the use experience of a user is improved. It should be understood that the number of the rf electrodes 2 is not limited in the present application, and since the rf electrodes 2 are all provided in pairs in the present application, the number of the rf electrodes 2 may be 2, 6, 8 or other required numbers.

FIG. 5 is a graph of the effect of RF device on skin at different RF electrode spacings, wherein the x 'abscissa is the spacing between two RF electrodes of opposite polarity and the y' ordinate is the cosmetic effect of RF energy on skin.

Referring to fig. 5, when the distance between the two opposite-polarity rf electrodes 2 does not exceed a value a, the cosmetic effect of the rf energy on the skin gradually becomes better as the distance between the two rf electrodes 2 increases, and at this time, the magnetic fields generated by the two adjacent opposite-polarity rf electrodes 2 substantially coincide with each other, and at this time, because the impedance between the rf electrodes 2 and the skin is small, the heat generated around the two rf electrodes 2 is high, and the high rf energy easily burns the skin, so that the cosmetic effect of the rf energy on the skin is poor; along with the increase of the distance between two adjacent radio frequency electrodes 2 with opposite polarities, the burn condition of the skin is gradually improved; when the distance between two adjacent radio frequency electrodes 2 with opposite polarities is a value, the cosmetic effect of radio frequency energy on skin is the best; when the distance between two adjacent radio frequency electrodes 2 with opposite polarities is greater than the value a, the cosmetic effect of the radio frequency energy on the skin gradually deteriorates as the distance between the two radio frequency electrodes 2 increases, at this time, the two adjacent radio frequency electrodes 2 with opposite polarities gradually move away from each other, the impedance between the radio frequency electrodes 2 and the skin gradually increases, the magnetic field generated by each radio frequency electrode 2 gradually weakens, the generated radio frequency energy gradually decreases, and the lower radio frequency energy gradually loses the cosmetic effect on the skin. In this embodiment, the first rf electrode 21 and the second rf electrode 22 are both cylindrical structures, the distance between the first rf electrode 21 and the second rf electrode 22 is set to be D, and the optimal value of D is 3mm or more and 5mm or less; this range of distances ensures a better cosmetic effect.

Further referring to fig. 2, the position adjustment mechanism 5 may include an adjustment portion 51 and a support portion 52, the support portion 52 being disposed at one end of the elastic portion 4 and abutting (connected or disconnected) with the elastic portion 4, the adjustment portion 51 and the support portion 52 being drivingly connected to drive the support portion 52 to move in the axial direction of the housing 11 through the adjustment portion 51, thereby adjusting the position of the elastic portion 4. Optionally, the adjusting part 51 and the supporting part 52 are in threaded transmission connection, so that the structure is simple, and the position adjustment is more accurate and reliable. Preferably, the position adjusting mechanism 5 further comprises a driving portion 53, and the driving portion 53 is connected to the adjusting portion 51 and is used for driving the adjusting portion 51 to move. In this embodiment, a driving portion 53 is disposed at an end of the elastic portion 3 away from the rf electrode 2, the driving portion 53 includes a motor 531, and the motor 531 drives the adjusting portion 51 to rotate.

In one embodiment, the driving part 53 further includes a gear box 532, the motor 531 is used for outputting power to the gear box 532, the adjusting part 51 includes a screw 511, and the gear box 532 and the screw 511 are connected to drive the screw 511 to rotate, thereby driving the supporting part 52 to move along the axial direction of the housing 11 by the rotation of the screw 511. Since the rotation speed of the motor-driven transmission is fast and the range of position adjustment required for the elastic part 4 is small in the present application, a gear box 532 for speed reduction is provided between the motor 531 and the adjusting part 51 so that the adjusting part 51 can finely adjust the position of the elastic part 4. It should be understood that the present application is not limited to the type of the driving portion 53, and the driving portion 53 may be a driving device such as an air cylinder or a hydraulic cylinder, in addition to the motor driving.

Optionally, the supporting portion 52 includes an elastic support 521 and a moving platform 522, one end of the elastic support 521 is connected to the elastic portion 4, the other end of the elastic support 521 is connected to the moving platform 522, and the moving platform 522 is in threaded transmission connection with the screw 511 to drive the elastic portion 4 to move along the axial direction of the housing 11 through the screw 511, so as to adjust the axial position of the elastic portion 4 in the axial direction of the housing 11, that is, adjust the axial position of the connection between the elastic portion 4 and the elastic support 521, so that each rf electrode 2 is subjected to substantially the same elastic force of the elastic portion 4.

Optionally, the movable platform 522 is provided with an external thread 5221, and the screw 511 and the external thread 5221 cooperate to adjust the up-down position of the movable platform 522, so that the position of the elastic part 4 along the extension direction of the rf electrode 2 can be adjusted by adjusting the position of the screw 511. Meanwhile, the position of the elastic part 4 is adjusted by the way of matching the screw 511 with the external thread 5221, so that the structure of the position adjusting mechanism 5 can be simplified. In other embodiments, the movable platform 522 may be internally threaded to mate with the threaded rod 511. It should be understood that the present application does not limit the structure of the adjusting portion 51, and in another embodiment, the adjusting portion 51 may also be configured as a worm or a rotating shaft to adjust the position of the moving platform 522.

Further, the moving platform 522 is provided with a boss 5222, and the elastic support member 521 is sleeved on the boss 5222. The elastic support 521 is preferably fixedly coupled to the boss 5222. In this embodiment, two sidewalls of the elastic support 521 are fixedly connected to two sidewalls of the protrusion 5222, so that the movable platform 522 is fixedly connected to the elastic support 521.

With continued reference to fig. 2 and 4, the radio-frequency electrode 2 may include a protruding portion 23 and a shielding portion 24 which are axially connected, the protruding portion 23 is used for contacting the skin and being movable into and out of the fixing portion 3, the elastic portion 4 abuts against the shielding portion 24, and both the elastic portion 4 and the shielding portion 24 are disposed in the accommodating space 31, which may facilitate the abutment (connection or disconnection) of the radio-frequency electrode 2 with the elastic portion 4 and may protect the elastic portion 4. The protruding portion 23 is disposed outside the accommodating space 31, wherein the maximum cross-sectional area of the shielding portion 24 is larger than the cross-sectional area of the opening 32, so that the radio-frequency electrode 2 is confined in the fixing portion 3.

In a preferred embodiment, the protruding portion 23 and the shielding portion 24 are fixedly connected, the shape of the opening 32 matches the shape of the protruding portion 23, and the protruding portion 23 is disposed through the opening 32 and abuts against the inner side wall of the opening 32 to seal the protruding portion 23 and the fixing portion 3, so as to prevent dirt such as rain water from entering the fixing portion 3 and damaging the elastic portion 4 and the position adjusting mechanism 5.

In other embodiments, the maximum cross-sectional area of the opening 32 is larger than the cross-sectional area of the protruding portion 23, so that the protruding portion 23 can rotate relative to the fixing portion 3, and the structure can enable the radio-frequency electrode 2 to be attached to the skin at a certain angle, so that the radio-frequency device 1 is not limited to be attached in a manner of being perpendicular to the skin, and all the radio-frequency electrodes 2 can be in contact with the skin when the radio-frequency device 1 is used, and the use is more convenient for a user.

The shape of the protruding part 23 and the fixing part 3 is not limited in the present application, in this embodiment, the protruding part 23 is a cylindrical structure and the end of the protruding part 23 is configured to be circular arc, so as to ensure that the protruding part 23 will not scratch the skin when contacting the skin; the fixing portion 3 is provided in a sleeve structure to easily accommodate the shielding portion 24, the elastic portion 4, and the position adjustment mechanism 5. In other embodiments, the protruding portion 23 and the fixing portion 3 may be provided in other shapes, for example, the protruding portion 23 may be provided in a spherical structure, and the fixing portion 3 may be provided in a rectangular parallelepiped structure.

Preferably, the shielding portion 24 is integrally formed with the protruding portion 23 to ensure that the protruding portion 23 and the shielding portion 24 are easy to process and firmly connected. Further, in order to make the structure of the elastic portion 4 simple and enable compression deformation in the small accommodating space 31, in the present embodiment, the elastic portion 4 includes at least one spring, one end of the spring abuts against one end of the rf electrode 2, and the other end is connected to the position adjusting mechanism 5 such as the elastic support 521. The structure of the elastic portion 4 is not limited in the present application, and in another embodiment, the elastic portion 4 may also be an elastic steel sheet or other elastic device capable of compressing or stretching, such as a threaded pipe.

Fig. 6 is a block diagram of the rf device in the preferred embodiment of the present invention. As shown in fig. 6, the radio frequency device 1 preferably further comprises a control unit 7, typically disposed within the housing 11, the control unit 7 controlling the automated operation of the radio frequency device 1. Further, the control unit 7 is in communication connection with the driving portion 53, such as in communication connection with the motor 531, and the control unit 7 is configured to control an operating state of the driving portion 53, such as controlling an operating state of the motor 531, where the operating state of the motor may include motor stop, motor start, a motor speed value, a number of turns of the motor, and the like.

Further, the radio frequency device 1 further comprises a pressure sensor 6 communicatively connected to the control unit 7, wherein the pressure sensor 6 is disposed on the elastic portion 4 or the position adjustment mechanism 5, and is configured to identify the pressure of the elastic portion 4 and generate pressure information. The control unit 7 is used for controlling the operation state of the motor 531 according to the pressure information of the elastic part 4. Preferably, the pressure sensor 6 is used for recognizing the pressure of the elastic support 521 and generating pressure information, and in this case, the pressure sensor 6 is disposed on the elastic support 521, such as the inner surface or the outer surface of the elastic support 521, so as to obtain the position of the elastic part 4 according to the pressure of the elastic support 521. In this embodiment, the pressure sensor 6 is disposed between the boss 5222 of the movable platform 522 and the elastic support 521, so that the pressure sensor 6 can more accurately obtain the actual pressure value of the elastic support 521. It should be understood that the pressure applied to the elastic support 521 by the elastic portion 4 is the pressure applied to the elastic portion 4 by the skin. Therefore, the pressure sensor 6 is disposed on the elastic support member 521, the pressure sensor 6 is used for acquiring the pressure applied to the elastic support member 521, and detecting the pressure of the elastic portion 4 (i.e. the pressure of the rf electrode 2) according to the pressure of the elastic support member 521, and since the elastic portion 4 and the elastic support member 521 move synchronously, the actual pressure value of the elastic support member 521 is the actual pressure value of the elastic portion 4.

Further, the control unit 7 controls the position adjustment mechanism 5 to adjust the position of the elastic portion 4 based on the pressure information of the elastic support 521.

Further, the control unit 7 is further configured to determine whether the actual pressure value of the elastic portion 4 is within the preset pressure range; when the actual pressure value is not within the preset pressure range, the control unit 7 controls the position adjustment mechanism 5 to adjust the position of the elastic portion 4. For example, when the actual pressure value of the elastic part 4 is greater than the maximum pressure value within the preset pressure range, the control unit 7 controls the motor 531 to operate in the first direction, that is, the motor 531 drives the screw 511 to rotate so as to move the elastic part 4 away from the rf electrode 2, so as to reduce the deformation amount of the elastic part 4, thereby reducing the elastic force of the elastic part 4; when the actual pressure value is smaller than the minimum pressure value within the preset pressure range, the control unit 7 controls the motor 531 to operate in the second direction, that is, the motor 531 drives the screw 511 to rotate so as to move the elastic part 4 towards the rf electrode 2, so as to increase the deformation amount of the elastic part 4, thereby increasing the elastic force of the elastic part 4. In this embodiment, the first direction is opposite to the second direction.

In the application, when the actual pressure value of the elastic part 4 of each radio frequency device 1 is not within the preset pressure range, the difference between the beauty effect of each area where the radio frequency device 1 contacts with the skin is large, the stability and uniformity of the radio frequency device 1 are poor, the beauty effect of the radio frequency device 1 is poor, and the user experience is poor. When the actual pressure value of each elastic part 4 is kept within the preset pressure range, the depths of all the radio-frequency electrodes 2 pressed into the skin are basically the same, then the impedances generated by all the radio-frequency electrodes 2 contacted with the skin are basically the same, the magnetic fields and the radio-frequency energy generated by all the radio-frequency electrodes 2 are also basically the same, the cosmetic effects of all the areas of the radio-frequency device 1 contacted with the skin are basically the same, and the stability and the uniformity of the radio-frequency device 1 are better.

It is to be understood that, according to hooke's law F = kx; wherein F is the pressure to which the spring is subjected; k is the elastic coefficient; x is the spring deflection; if the actual pressure value of the elastic portion 4 is kept within the preset pressure range, the elastic force of the elastic portion 4 on the rf electrode 2 needs to be kept constant, and if the elastic portion 4 is configured as a spring, the deformation of the spring needs to be kept constant, i.e. the rf device 1 and the elastic support 521 need to be kept at a constant distance. In the present embodiment, the position of the elastic support 521 may be adjusted by the screw 511 to keep the deformation amount of the spring substantially uniform.

It will be appreciated that since the plurality of radio frequency electrodes 2 have regions of magnetic field coincidence, the regions of magnetic field coincidence are relatively hot and may burn the skin; and the radiofrequency electrode 2 may also burn the skin when in use due to an excessively high temperature of its surface. Therefore, when the radio frequency device 1 is used, a user needs to continuously move the radio frequency device 1 on the skin and ensure that the radio frequency device 1 does not stay in the same area of the skin for more than two seconds so as to protect the skin of the user. Meanwhile, the user needs to coat the gel on the surface of the skin before using the gel, and the skin is protected by the lubrication, the electric conduction and the heat dissipation of the gel.

Referring to fig. 6, the radio frequency device 1 further includes a temperature sensor 8 fixed on the end face of the housing 11, and the temperature sensor 8 is in communication connection with the control unit 7. The control unit 7 is used for controlling the power of the radio frequency electrode 2 when outputting the radio frequency energy according to the temperature information of the skin detected by the temperature sensor 8. The temperature sensor 8 can be arranged in the middle area of the plurality of radio frequency electrodes 2, such as in the middle area of the four radio frequency electrodes 2, preferably on the axis of the shell 11, and since the area is the area where the magnetic fields of the radio frequency electrodes 2 coincide, the temperature is high and heat is not easy to dissipate, the temperature sensor 8 can detect the highest temperature of the skin, so as to prevent the skin of the user from being damaged due to the overhigh temperature of the radio frequency electrodes 2 and directly influencing the beauty effect of the skin. The number of the temperature sensors 8 is not limited in the present application, and may be one or more.

The control unit 7 may further control the energy output state of the rf electrode 2, such as controlling the rf electrode 2 to output or not output rf energy, and may also control the power of the rf electrode 2 when outputting rf energy. Specifically, when the temperature sensor 8 detects that the skin temperature reaches above 43 °, the temperature sensor 8 outputs a first temperature signal to the control unit 7, and the control unit 7 controls the radio-frequency electrode 2 to reduce the power to reduce the output of radio-frequency energy; when the temperature sensor 8 detects that the skin temperature reaches more than 48 degrees, the skin is easily burnt by the radio frequency electrode 2, the temperature sensor 8 outputs a second temperature signal to the control unit 7, and the control unit 7 controls the radio frequency electrode 2 not to generate radio frequency energy.

In a non-limiting embodiment, the control process of the radio frequency device 1 is: after the radio-frequency electrode 2 is attached to the skin, due to the pressure of the skin, the radio-frequency electrode 2 moves in the accommodating space 31 towards the spring direction and compresses the spring, the other end of the spring compresses the elastic support member 521, the pressure sensor 6 obtains the pressure value of the elastic support member 521, the pressure value of the elastic support member 521 is the actual pressure value of the elastic part 4 at this time, and the control unit 7 judges whether the actual pressure value of the elastic part 4 is within the preset pressure range; when the actual pressure value of the elastic part 4 is not within the preset pressure range, the control unit 7 controls the motor 531 to drive the gear box 532 to work, the gear box 532 drives the screw rod 511 to rotate, the supporting part 52 is driven to move along the axial direction of the housing 11, and the elastic part 4 moves along with the supporting part 52, so that the actual pressure value of the elastic part 4 is adjusted to be within the preset pressure range; when the actual pressure value of the elastic part 4 is within the set preset pressure range, the control unit 7 controls the motor 531 to stop operating, thereby maintaining the current position of the elastic part 4.

The type of the control unit 7 is not particularly limited in the present application, and may be hardware for executing Logic operations, such as a single chip microcomputer, a microprocessor, a Programmable Logic Controller (PLC), a Field-Programmable Gate Array (FPGA), or a software program, a function module, a function, an Object library (objects) or a Dynamic Link library (Dynamic-Link Libraries) for implementing the above functions on a hardware basis. It should be known how the communication between the control unit and the other devices is implemented in detail.

In summary, the radio frequency device 1 of the present invention can transmit the pressure to the elastic part 4 when each radio frequency electrode 2 is subjected to the pressure applied to the radio frequency electrode by the skin through the elastic part 4, and can make the radio frequency electrode 2 telescopic relative to the housing 11 through the deformation of the elastic part 4, so that when a user uses the radio frequency device, the radio frequency electrode 2 can be compressed in different degrees according to the needs, thereby ensuring that each radio frequency electrode 2 can be attached to the skin, and the use is more flexible and convenient. Meanwhile, the invention also adjusts the attaching depth of each radio frequency electrode 2 to the skin through the position adjusting mechanism 5, which can ensure that the depths of all the radio frequency electrodes 2 pressed into the skin are basically the same, so that the radio frequency energy generated by all the radio frequency electrodes 2 is basically the same, namely, the radio frequency energy distribution of different areas of the radio frequency device 1 is more uniform, the stability and uniformity of the radio frequency device 1 are ensured, the beauty effect of the radio frequency device 1 is better, the safety of the radio frequency device 1 is improved, and the user experience is improved.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the present invention.

Claims (13)

1. A radio frequency device is characterized by comprising a shell, at least one pair of electrodes, an elastic part and a position adjusting mechanism; each pair of the electrodes comprises two radio-frequency electrodes which are distributed at intervals, and all the radio-frequency electrodes are arranged on the shell; the elastic part is arranged in the shell and is abutted with the radio-frequency electrode; the position adjusting mechanism is abutted to the elastic part and at least partially arranged in the shell, and the position adjusting mechanism is used for adjusting the position of the elastic part.

2. The radio frequency device according to claim 1, wherein said radio frequency device comprises more than two pairs of said electrodes, each pair of said electrodes comprising two radio frequency electrodes of opposite polarity; each radio-frequency electrode is abutted against one corresponding elastic part, and the position of each elastic part is adjusted through one corresponding position adjusting mechanism.

3. The radio frequency device according to claim 1, wherein the position adjustment mechanism includes an adjustment portion and a support portion, the support portion is disposed at one end of the elastic portion and is configured to abut against the elastic portion, and the adjustment portion is drivingly connected to the support portion to drive the support portion to move in an axial direction of the housing to adjust a position of the elastic portion.

4. The radio frequency device according to claim 3, wherein the adjustment portion is in threaded drive connection with the support portion.

5. The radio frequency device according to claim 4, wherein the supporting portion comprises an elastic supporting member and a moving platform, the adjusting portion comprises a screw, one end of the elastic supporting member is connected with the elastic portion, the other end of the elastic supporting member is connected with the moving platform, and the moving platform is in threaded transmission connection with the screw.

6. The radio frequency device according to claim 5, wherein the mobile platform is provided with a boss, and the elastic supporting member is sleeved on the boss; the radio frequency device further comprises a pressure sensor for identifying the pressure of the elastic support member, wherein the pressure sensor is arranged on the inner surface or the outer surface of the elastic support member.

7. The radio frequency device of claim 1, wherein the radio frequency electrode comprises an axially connected protrusion and a shielding portion, the protrusion for contacting a predetermined object; a through hole is formed in the end face of the shell;

the radio frequency device also comprises a fixing part which penetrates through the through hole and is fixedly connected with the through hole; an accommodating space is formed inside the fixing part, one end of the accommodating space is opened, and the other end of the accommodating space is closed;

the shielding part and the elastic part are arranged in the accommodating space, and the protruding part is arranged outside the accommodating space;

the maximum cross-sectional area of the shield is greater than the cross-sectional area of the opening.

8. The radio frequency device of claim 7, wherein the opening has a shape that matches a shape of the protrusion, the protrusion being disposed through the opening and abutting an inner sidewall of the opening to seal the protrusion and the fixing portion.

9. The radio frequency device of claim 7, wherein a maximum cross-sectional area of the opening is greater than a cross-sectional area of the protruding portion to enable the protruding portion to rotate relative to the fixed portion.

10. The radio frequency device of claim 1, further comprising a pressure sensor and a control unit communicatively connected;

the pressure sensor is arranged on the elastic part or the position adjusting mechanism and is used for identifying the pressure of the elastic part and generating pressure information;

the control unit is used for controlling the position adjusting mechanism to adjust the position of the elastic part according to the pressure information of the elastic part.

11. The radio frequency device according to claim 10, wherein the control unit is further configured to determine whether an actual pressure value of the elastic portion is within a preset pressure range;

and if the actual pressure value of the elastic part is not within the preset pressure range, the control unit controls the position adjusting mechanism to adjust the position of the elastic part.

12. The radio frequency device according to claim 10, wherein the position adjustment mechanism includes an adjustment portion, a support portion, and a driving portion; the driving part is connected with the adjusting part and is used for driving the adjusting part to move; the supporting part is arranged at one end of the elastic part and is used for being abutted against the elastic part; the adjusting part is in transmission connection with the supporting part to drive the supporting part to move along the axial direction of the shell so as to adjust the position of the elastic part.

13. The radio frequency device according to claim 12, wherein the driving part includes a gear box and a motor for outputting power to the gear box, the gear box and the adjusting part being connected to drive the adjusting part to rotate;

the control unit is in communication connection with the motor and is used for controlling the running state of the motor according to the pressure information of the elastic part.

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