Ultrasonic beautifying device

Abstract

The invention discloses an ultrasonic beauty device which comprises a handle and an ultrasonic beauty head, the ultrasonic beauty head comprises a head part, a skin sensor, an ultrasonic module and a control module, and the head part comprises a head part shell and a fitting surface located at one end of the head part shell and used for fitting the skin; the skin sensor is located in the head shell and is spaced from the fitting surface in the direction perpendicular to the fitting surface, and the skin sensor is annular and is used for detecting the fitting state of the fitting surface and the skin; the ultrasonic module corresponds to the head and is used for detecting state parameters of the skin attached to the attaching face; the control module is used for receiving the fitting state fed back by the skin sensor so as to control the state of the ultrasonic module; and adjusting the ultrasonic energy output by the ultrasonic module according to the state parameters fed back by the ultrasonic module in the starting state of the ultrasonic module. The control module controls the ultrasonic module to be started or not started according to the attaching state, and it is guaranteed that the actual depth of the ultrasonic energy action is consistent with the predicted depth.

Description

Technical Field

[0001] The present invention relates to the technical field of beauty instruments, and in particular to an ultrasonic beauty device. Background Art

[0002] As people's living standards improve, they pay more and more attention to their skin conditions and usually take corresponding care and maintenance. Therefore, various beauty instruments have appeared on the market. Collagen gun uses focused ultrasound energy to precisely target the tissue for treatment. The focused area can generate enough heat to achieve lifting, firming, skin rejuvenation and fat reduction effects for beauty.

[0003] However, when using the existing collagen gun, professional operators usually need to judge whether the ultrasonic output action window is in full contact with the human skin through personal feeling, or by installing a skin contact detection metal electrode on the ultrasonic output window, and using the metal electrode to detect the human body resistance value to judge the contact state between the window and the human skin, so as to output the corresponding ultrasonic energy, so that the actual depth reached by the ultrasonic energy is consistent with the preset depth, so as to achieve the expected cosmetic effect. However, personal feeling is affected by many factors (operator's proficiency, personal emotions, physiological state, etc.) and it is easy to cause misjudgment; in addition, the metal electrode detection directly contacting the skin will be affected by water, sweat, etc. on the skin, resulting in inaccurate detection results, thereby causing the actual depth reached by the ultrasonic energy to be inconsistent with the preset depth. Moreover, during the use of the collagen gun, it is easy for the actual depth reached by the ultrasonic energy to be inconsistent with the preset depth due to improper operation, such as not being close to the skin. Summary of the invention

[0004] In view of this, the present invention provides a new ultrasonic beauty device to improve the above problems.

[0005] The present application provides an ultrasonic beauty device, comprising a handle and an ultrasonic beauty head mounted on the handle, wherein the ultrasonic beauty head comprises:

[0006] A head, comprising a head shell and a fitting surface located at one end of the head shell and used for fitting with the skin;

[0007] A skin sensor is located inside the head shell, the skin sensor is annular and is arranged close to the fitting surface, the skin sensor is spaced from the fitting surface in a direction perpendicular to the fitting surface, and the skin sensor is used to detect the fitting state between the fitting surface and the skin;

[0008] An ultrasonic module, arranged corresponding to the head, and used to detect state parameters of the skin in contact with the contact surface;

[0009] A control module is electrically connected to the ultrasonic module and the skin sensor, and is used to receive the fitting status fed back by the skin sensor to control the status of the ultrasonic module; and when the ultrasonic module is in the started state, adjust the ultrasonic energy output by the ultrasonic module according to the status parameters fed back by the ultrasonic module.

[0010] In some embodiments, the inner contour of the projection of the skin sensor on the fitting surface coincides with the outer contour of the fitting surface, or is located inside the outer contour of the fitting surface.

[0011] In some embodiments, the ultrasonic module includes a liquid storage container with a liquid storage cavity, a propagation medium stored in the liquid storage cavity, and an ultrasonic component immersed in the propagation medium. The ultrasonic component is electrically connected to the control module and is arranged corresponding to the bonding surface.

[0012] In some embodiments, the liquid storage container is provided with an opening on a side facing the fitting surface, the opening is communicated with the liquid storage cavity, and the projection of the opening on the fitting surface is located on the inner side of the projection of the skin sensor on the fitting surface.

[0013] In some embodiments, the liquid storage container includes a main body and a protrusion extending from the main body toward the fitting surface, the opening passes through the protrusion, the ultrasonic component is disposed at one end of the main body close to the protrusion, and the skin sensor is disposed around the outside of the protrusion.

[0014] In some embodiments, the head shell is provided with a avoidance opening corresponding to the protruding portion of the liquid storage container, and the avoidance opening is communicated with the opening. The head also includes a waterproof component provided on the head shell and covering the avoidance opening.

[0015] In some embodiments, a recessed portion is provided on the outer side of the head shell, the recessed portion surrounds the outer circumference of the avoidance opening, the waterproof component is installed in the recessed portion, and the outer surface of the waterproof component is flush with the end surface of the head shell.

[0016] In some embodiments, the ultrasonic component includes an ultrasonic shell and a focused ultrasonic piezoelectric element located in the ultrasonic shell, the ultrasonic shell is provided with a mounting portion for installing the focused ultrasonic piezoelectric element, the focused ultrasonic piezoelectric element includes a plurality of focused ultrasonic units, and the control module is used to control one or more of the focused ultrasonic units to generate focused ultrasonic energy.

[0017] In some embodiments, the ultrasonic housing and the liquid storage container are movably matched in a direction perpendicular to the fitting surface; or

[0018] The focused ultrasonic piezoelectric element and the ultrasonic shell are movably matched in a direction perpendicular to the fitting surface; or

[0019] At least two of the focused ultrasound units are arranged along a direction perpendicular to the bonding surface.

[0020] In some embodiments, the head also includes a color sensor installed on the head shell, the color sensor is electrically connected to the control module, the color sensor is used to identify the colors of different areas of the mask attached to the fitting surface, and the control module is used to receive the color feedback from the color sensor and control the working state of the ultrasonic module.

[0021] The ultrasonic beauty device provided by the present invention is provided with a skin sensor, an ultrasonic module and a control module. The skin sensor can detect the fitting state between the fitting surface and the skin. The control module controls the ultrasonic module to start or not start according to the fitting state. By using the skin sensor to detect the fitting state, it is possible to avoid human factors affecting the accuracy of the detection result, and also prevent the fitting state from changing due to improper operation during use and affecting the beauty effect. Moreover, the skin sensor is annular and spaced from the fitting surface, so it does not need to directly contact the skin during the detection process, and can avoid water, sweat, dust and the like on the skin surface affecting the accuracy of the detection result, thereby ensuring the accuracy of the detection result and ensuring that the actual depth of the ultrasonic energy output during the use of the ultrasonic beauty device is consistent with the expected depth. At the same time, the ultrasonic module can detect the state parameters of the skin that fits the fitting surface, so that the control module can control the ultrasonic energy output by the ultrasonic module according to the state parameters to avoid subcutaneous tissues such as nerves and blood vessels, thereby ensuring the safety of use, and also being conducive to improving the power of the ultrasonic beauty device on the premise of ensuring safety, thereby improving the beauty effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of an ultrasonic cosmetic device provided by an embodiment of the present invention;

[0023] Figure 2 for Figure 1 The schematic diagram of the ultrasonic beauty head structure is shown in;

[0024] Figure 3 for Figure 2 An exploded schematic diagram of the ultrasonic beauty head shown in FIG.

[0025] Figure 4 for Figure 2 A cross-sectional view of the ultrasonic beauty head shown in;

[0026] Figure 5 for Figure 2 Schematic diagram of the waterproof part and the head shell being separated;

[0027] Figure 6 for Figure 3 An exploded schematic diagram of the liquid storage container and the skin sensor shown in ;

[0028] Figure 7 for Figure 3 An exploded schematic diagram of the ultrasonic assembly is shown in FIG.

[0029] In the figure: 10, ultrasonic beauty device; 12, handle; 14, ultrasonic beauty head; 16, head; 18, skin sensor; 20, ultrasonic module; 22, control module; 23, head shell; 24, fitting surface; 26, color sensor; 28, radio frequency electrode; 30, liquid storage container; 32, ultrasonic component; 34, liquid storage cavity; 36, opening; 38, body; 40, protrusion; 42, base; 44, upper cover; 46, first waterproof ring; 48, annular body; 50, flange; 52, avoidance; 54, waterproof part; 56, recessed part; 58, second waterproof ring; 60, ultrasonic shell; 62, focused ultrasonic piezoelectric element; 64, opening; 66, installation part. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, inside, outside, top, bottom...) are only used to explain the relative position relationship between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, the element may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0033] See also Figures 1 to 7An ultrasonic beauty device 10 provided by an embodiment of the present invention includes a handle 12 and an ultrasonic beauty head 14 mounted on the handle 12. The handle 12 is used for a user to hold, and the ultrasonic beauty head 14 is used to contact the skin, and the skin at the contacting part is used as a beauty area. The ultrasonic beauty head 14 emits ultrasonic energy to the beauty area to achieve a beauty effect on the beauty area. Specifically, the ultrasonic beauty head 14 acts on the face of the user, and the corresponding area of ​​the face is used as the beauty area to form a corresponding beauty effect on the face.

[0034] The handle 12 includes a handle shell and a battery located inside the handle shell. The ultrasonic beauty head 14 is installed in the handle shell. The battery is electrically connected to the ultrasonic beauty head 14 to provide power to the ultrasonic beauty head 14 during use, freeing it from the constraints of an external power source and making it convenient for users to use.

[0035] The ultrasonic beauty head 14 includes a head 16, a skin sensor 18, an ultrasonic module 20 and a control module 22. The head 16 includes a head shell 23 and a fitting surface 24 located at one end of the head shell 23. The fitting surface 24 is used to contact the skin. The head shell 23 is fixed to the handle 12. The skin sensor 18 and the ultrasonic module 20 are arranged in the head shell 23. The control module 22 is electrically connected to the skin sensor 18 and the ultrasonic module 20 respectively.

[0036] Specifically, the handle 12 is a flat long columnar structure, the ultrasonic beauty head 14 is located at one end of the handle 12 in the length direction, and the fitting surface 24 is located at the end of the head shell 23 away from the handle 12. The ultrasonic energy generated by the ultrasonic beauty head 14 when working can be transmitted to the skin that fits the fitting surface 24, thereby forming a corresponding beauty effect on the skin at that part.

[0037] The head 16 further includes a color sensor 26 mounted on the head shell 23, and the color sensor 26 is electrically connected to the control module 22. When the ultrasonic beauty device 10 is used, a specific mask can be applied to the face first, the shape of the mask is roughly the same as the shape of a human face, and the mask has different colors corresponding to different areas of the face. The color sensor 26 is used to identify the colors of different areas of the mask attached to the fitting surface 24, so as to determine the current facial area corresponding to the ultrasonic beauty head 14. The control module 22 receives the color feedback from the color sensor 26 to control the working state of the ultrasonic module 20. The ultrasonic energy required for different areas of the face may be different. The color sensor 26 can determine the current facial area by identifying the color of the mask, so that the control module 22 controls the ultrasonic module to output the corresponding ultrasonic energy. Moreover, when the facial area identified by the color sensor 26 contains large blood vessels, nerves and other tissues, the control module 22 can control the ultrasonic module 20 to stop working to prevent damage to blood vessels, nerves and other tissues, causing harm to the user, thereby improving the safety performance of the ultrasonic beauty device 10. Moreover, since the ultrasonic beauty device 10 can identify facial areas where blood vessels, nerves and other tissues exist, the control module 22 can control the ultrasonic module 20 to increase the output power in other areas to achieve the effect of both increasing the output power and reducing safety risks.

[0038] For example, the trigeminal nerve area and large blood vessel area corresponding to the face of the mask can be made red. When the color sensor 26 recognizes the red area of ​​the mask, the control module 22 confirms that the current facial area is a non-working area, and then controls the ultrasonic module 20 to stop working.

[0039] Preferably, one end of the color sensor 26 extends out of the head shell 23 or is flush with the outer surface of the head shell 23 , so that the color sensor 26 can directly contact the mask to prevent the head shell 23 from affecting the detection result of the color sensor 26 .

[0040] The head 16 further includes a plurality of radio frequency electrodes 28 mounted on the head shell 23, the radio frequency electrodes 28 are electrically connected to the control module 22, and one end of the radio frequency electrode 28 extends out of the head shell 23 or is flush with the outer surface of the head shell 23. The control module 22 can control the radio frequency electrode 28 to output radio frequency energy and act on the skin corresponding to the radio frequency electrode 28, thereby forming a radio frequency beauty effect on the skin at that part, enriching the beauty function of the ultrasonic beauty device 10.

[0041] The specific number of the RF electrodes 28 is not limited, and can be one or more. In this embodiment, there are multiple RF electrodes 28, and the multiple RF electrodes 28 are arranged at intervals along the circumference of the head shell 23 to increase the contact area with the skin and enhance the RF beauty effect.

[0042] In one embodiment, the skin sensor 18 is located inside the head shell 23, and is used to detect the fitting state between the fitting surface 24 and the skin, that is, to detect whether the fitting surface 24 is completely in contact with the skin or only partially in contact with the skin. The control module 22 is used to receive the fitting state feedback from the skin sensor 18 to control the state of the ultrasonic module 20, that is, to control whether the ultrasonic module 20 is started or not. The ultrasonic module 20 not starting means that the ultrasonic module 20 is not working, which may mean that the ultrasonic module 20 has not been working, or it may mean that the ultrasonic module 20 stops working after working for a period of time. When the fitting surface 24 is not completely in contact with the skin, the actual depth of the ultrasonic energy may be inconsistent with the expected depth, thereby affecting the beauty effect. The present application sets a skin sensor 18 to detect whether the fitting surface 24 is completely in contact with the skin. Only when the fitting surface 24 is completely in contact with the skin, the ultrasonic module 20 is controlled to output ultrasonic energy, thereby ensuring that the actual depth of the ultrasonic energy is the same as the expected depth. In addition, the skin sensor 18 is used to detect the fitting state, thereby avoiding the influence of human factors on the detection results. In addition, when the ultrasonic beauty device 10 is in use, if the fitting state changes due to improper operation, that is, if it is not completely in contact with the skin, the skin sensor 18 can detect that the fitting surface 24 is not completely in contact with the skin, and the control module 22 will control the ultrasonic module 20 to stop working, thereby avoiding the beauty effect being affected by improper operation.

[0043] In this embodiment, when the fitting surface 24 fits the skin, the skin sensor 18 can form a loop with the human body, thereby detecting a current signal such as the impedance of the skin. When the fitting area is different, the impedance of the loop will be different, so the fitting state of the fitting surface 24 and the skin can be judged according to the current signal. Specifically, when the fitting surface 24 is completely fitted with the skin, the area of ​​contact between the skin and the ultrasonic beauty head 14 is large, and the impedance detected by the skin sensor 18 is relatively large. When the fitting surface 24 is only partially fitted with the skin, the area of ​​contact between the skin and the ultrasonic beauty head 14 is small, and the impedance detected by the skin sensor 18 is relatively small. The degree of fitting between the fitting surface 24 and the skin is determined by the size of the impedance.

[0044] The skin sensor 18 is annular and is arranged close to the fitting surface 24. When the fitting surface 24 fits the skin, the part of the skin corresponding to the space inside the skin sensor 18 serves as the detection area. When it is fully fitted, the detection area corresponds to the entire inner space of the skin sensor 18, the detection area is relatively large, and the impedance is relatively large. When it is not fully fitted, the detection area only corresponds to part of the inner space of the skin sensor 18, the detection area is relatively small, and the impedance is also relatively small, thereby achieving the effect of judging the fitting state by the impedance size.

[0045] The skin sensor 18 is spaced apart from the fitting surface 24 in a direction perpendicular to the fitting surface 24, so that when the skin sensor 18 is detecting the fitting state, the skin sensor 18 does not need to directly contact the skin, thereby avoiding the detection result being affected by the presence of water, sweat, dust, etc. on the skin, improving the accuracy of the detection result, and ensuring that the actual depth of the ultrasonic energy output by the ultrasonic module 20 is consistent with the expected depth.

[0046] The distance between the skin sensor 18 and the fitting surface 24 is not limited. In one embodiment, the distance between the skin sensor 18 and the fitting surface 24 is in the range of 0.8 to 1 mm to prevent the ultrasonic beauty device 10 from affecting the accuracy of the detection structure due to the excessive distance between the skin sensor 18 and the skin during use.

[0047] In this embodiment, the inner contour of the projection of the skin sensor 18 on the fitting surface 24 is located inside the outer contour of the fitting surface 24, so that during the detection process, the detection area is the part that should be in contact with the fitting surface 24, ensuring the accuracy of the detection structure. In other embodiments, the inner contour of the projection of the skin sensor 18 on the fitting surface 24 can coincide with the outer contour of the fitting surface 24.

[0048] In one embodiment, the ultrasonic module 20 is disposed corresponding to the head 16 and is used to detect the state parameters of the skin in contact with the contact surface 24, including the presence or absence of blood vessels, nerves and other tissues, as well as the depth and thickness of blood vessels, nerves and other tissues. Specifically, the ultrasonic module 20 is located inside the head shell 23, and the skin sensor 18 is located between the ultrasonic module 20 and the contact surface 24.

[0049] The ultrasonic module 20 can transmit ultrasonic waves to the skin and receive ultrasonic echoes reflected by the skin, and detect the state parameters of the skin by using the transmission time, signal strength and other information of the echoes. The control module 22 is electrically connected to the ultrasonic module 20, so that when the ultrasonic module 20 is in the startup state, the ultrasonic energy output by the ultrasonic module 20 is adjusted according to the state parameters fed back by the ultrasonic module 20. Due to the differences in face shape, face size and mask wearing of different users, the face area represented by the corresponding part of the mask may not be completely the same as the face area actually fitted, so that the area recognized by the color sensor 26 may not be completely accurate. The present application first determines whether the current face area is the working area through the color sensor 26. When it is determined to be the working area, the state parameters of the skin are detected by the ultrasonic module 20 to detect whether there are blood vessels, nerves and other tissues, and the depth and thickness of blood vessels, nerves and other tissues can also be detected. The detection results are more specific and accurate, so as to adjust the output ultrasonic energy and further improve the safety performance of the ultrasonic beauty device 10.

[0050] In one embodiment, the control module 22 can control the ultrasonic energy output by the ultrasonic module 20 to act at a depth of 1 to 4.5 mm under the skin. That is, the control module 22 can adjust the action depth of the ultrasonic energy within the range of 1 to 4.5 mm by controlling the ultrasonic energy output by the ultrasonic module 20.

[0051] The ultrasonic module 20 includes a liquid storage container 30, a propagation medium, and an ultrasonic component 32. The liquid storage container 30 is provided with a liquid storage cavity 34, in which the propagation medium is stored. The ultrasonic component 32 is immersed in the propagation medium and is electrically connected to the control module. The ultrasonic component 32 is arranged corresponding to the bonding surface 24. The ultrasonic component 32 is used to transmit ultrasonic waves to the bonding surface 24 and receive ultrasonic echoes reflected back. The ultrasonic waves can propagate in the propagation medium, so that the ultrasonic waves can propagate from the ultrasonic component 32 toward the bonding surface 24, and the ultrasonic echoes can propagate from the bonding surface 24 toward the ultrasonic component 32.

[0052] There is no limitation on the specific type of the propagation medium, as long as it can provide ultrasonic wave propagation. In the present embodiment, the propagation medium includes antifreeze, which is prepared by distilled water and heat dissipation liquid, so that the propagation medium can not only transmit ultrasonic waves, but also absorb the heat generated by the ultrasonic component 32 during operation, thereby assisting the ultrasonic component 32 in dissipating heat.

[0053] The liquid storage container 30 is provided with an opening 36 on one side facing the fitting surface 24, the opening 36 is connected to the liquid storage cavity 34, and the projection of the opening 36 on the fitting surface 24 is located inside the projection of the skin sensor 18 on the fitting surface 24. The opening 36 is provided on the liquid storage container 30 so that the propagation medium contacts the head 16, thereby preventing the liquid storage container 30 from affecting the propagation of ultrasonic waves.

[0054] The liquid storage container 30 includes a body 38 and a protrusion 40 extending from the body 38 toward the fitting surface 24. The liquid storage cavity 34 is located inside the body 38, and the opening 36 passes through the protrusion 40. The ultrasonic component 32 is disposed at one end of the body 38 close to the protrusion 40, and the skin sensor 18 is disposed around the outer side of the protrusion 40. By providing the protrusion 40 extending toward the fitting surface 24 on the body 38, the distance between the liquid storage container 30 and the fitting surface 24 can be reduced, thereby reducing the distance between the propagation medium and the fitting surface 24, facilitating the propagation of ultrasonic waves to the fitting surface 24, and also having a certain limiting effect on the skin sensor 18, facilitating the installation of the skin sensor 18.

[0055] The body 38 includes a base 42 and an upper cover 44 disposed on the base 42. The base 42 and the upper cover 44 enclose a liquid storage chamber 34. The upper cover 44 is located on a side of the base 42 close to the fitting surface 24. The protrusion 40 is disposed on a side of the upper cover 44 away from the base 42. The ultrasonic component 32 is located inside the upper cover 44. By dividing the body 38 into two parts, namely, the base 42 and the upper cover 44, during the assembly process, the base 42 and the upper cover 44 can be separated first, and after the ultrasonic component 32 is installed inside the upper cover 44, the upper cover 44 and the base 42 are fixed together, so that the installation of the ultrasonic component 32 can be facilitated.

[0056] Preferably, a first waterproof ring 46 is provided between the base 42 and the upper cover 44 to prevent the propagation medium in the liquid storage chamber 34 from leaking from the gap between the base 42 and the upper cover 44. Specifically, an annular groove is provided on one side of the base 42 close to the upper cover 44, and the first waterproof ring 46 is received in the annular groove to enhance the stability of the first sealing ring.

[0057] The skin sensor 18 includes an annular body 48 and a flange 50 connected to the annular body 48 . The annular body 48 surrounds the outer periphery of the protrusion 40 . The flange 50 extends radially outward from one end of the annular body 48 close to the fitting surface 24 .

[0058] In one embodiment, the head shell 23 is provided with a avoidance opening 52 through the protrusion 40 corresponding to the liquid storage container 30, and the avoidance opening 52 is communicated with the opening 36. The head 16 also includes a waterproof member 54 provided on the head shell 23, the waterproof member 54 covers the avoidance opening 52, and the fitting surface 24 is at least partially located on the outer surface of the waterproof member 54 away from the avoidance opening 52. The propagation medium can directly contact the waterproof member 54 through the opening 36 and the avoidance opening 52, and the ultrasonic wave in the propagation medium can pass through the waterproof member 54 to act on the corresponding skin, thereby reducing the distance between the propagation medium and the fitting surface 24, that is, reducing the distance between the propagation medium and the skin, facilitating the transmission of ultrasonic waves to the corresponding skin, and reducing the influence of the head shell 23 on the transmission of ultrasonic waves.

[0059] A recessed portion 56 is provided on the outer side of the head shell 23, and the recessed portion 56 surrounds the outer periphery of the avoidance opening 52. The waterproof component 54 is installed in the recessed portion 56, and the outer surface of the waterproof component 54 is flush with the end surface of the head shell 23, so as to facilitate the waterproof component 54 to fit the skin, and at the same time, it can also prevent the waterproof component 54 from protruding out of the head shell 23 and affecting the user experience.

[0060] The specific type of the waterproof component 54 is not limited. In the present embodiment, the waterproof component 54 is a waterproof mucous membrane, which is received in the recessed portion 56 and bonded and fixed to the head shell 23. The waterproof mucous membrane can achieve a waterproof effect and has a relatively small thickness, which is beneficial to the transmission of ultrasonic waves.

[0061] A second waterproof ring 58 is provided between the protrusion 40 and the head shell 23. The axial sides of the second waterproof ring 58 are respectively abutted against the protrusion 40 and the head shell 23 to form a sealing effect. The second waterproof ring 58 surrounds the outer periphery of the opening 36 and the avoidance opening 52, thereby preventing the propagation medium from leaking from the gap between the protrusion 40 and the head shell 23.

[0062] In one embodiment, the ultrasonic assembly 32 includes an ultrasonic shell 60 and a focused ultrasonic piezoelectric element 62. The ultrasonic shell 60 is installed inside the liquid storage container 30, and the focused ultrasonic piezoelectric element 62 is installed inside the ultrasonic shell 60. The focused ultrasonic piezoelectric element 62 is arc-shaped to focus the generated ultrasonic waves. Specifically, the focused ultrasonic piezoelectric element 62 is a piezoelectric ceramic piece in the shape of a tile.

[0063] One side of the ultrasonic shell 60 close to the fitting surface 24 is an opening 64, and the liquid storage chamber 34 is connected with the internal space of the ultrasonic shell 60 through the opening 64, so that the focused ultrasonic piezoelectric element 62 inside the ultrasonic shell 60 can directly contact the propagation medium.

[0064] A mounting portion 66 is provided on the ultrasonic shell 60 . The mounting portion 66 is annular and is located inside the opening 64 . The focused ultrasonic piezoelectric element 62 is mounted on the mounting portion 66 .

[0065] The focused ultrasonic piezoelectric element 62 includes a plurality of focused ultrasonic units, each of which can generate focused ultrasonic energy. The focus of the plurality of focused ultrasonic units is different, corresponding to different positions of the fitting surface 24, so that the focused ultrasonic energy generated by the plurality of focused ultrasonic units can act on the skin of different parts. The control module is electrically connected to the plurality of focused ultrasonic units to control one or more of the focused ultrasonic units to generate focused ultrasonic energy. Since the focus of the plurality of focused ultrasonic units is different, the control module can control the corresponding focused ultrasonic units to generate focused ultrasonic energy to act on the skin of the designated part according to actual needs.

[0066] It can be understood that the multiple focused ultrasound units can be multiple piezoelectric sheets spaced apart from each other, each piezoelectric sheet forming a focused ultrasound unit, that is, each piezoelectric sheet can generate focused ultrasound energy, and the control module can choose to control different piezoelectric sheets to work so that the focused ultrasound energy acts on the skin of different parts; or, the multiple focused ultrasound units can also be multiple groups of electrodes with opposite polarities on the same piezoelectric element, each group of electrodes constituting a focused ultrasound unit, that is, each group of electrodes can cooperate to generate focused ultrasound energy, and the control module can choose to control different electrode groups to work so that the focused ultrasound energy acts on the skin of different parts.

[0067] In one embodiment, the position of the focused ultrasonic piezoelectric element 62 in a direction perpendicular to the fitting surface 24 is adjustable to adjust the distance between the focused ultrasonic piezoelectric element 62 and the fitting surface 24. When the distance changes, the depth at which the focused ultrasonic energy generated by the focused ultrasonic piezoelectric element 62 acts on the skin will also change accordingly. Therefore, the ultrasonic module 20 can adjust the position of the focused ultrasonic piezoelectric element 62 to achieve the effect of adjusting the depth of action of the focused ultrasonic energy.

[0068] There is no limitation on the specific method of adjusting the position of the focused ultrasonic piezoelectric element 62. For example, the ultrasonic shell 60 and the liquid storage container 30 may be movably matched in a direction perpendicular to the fitting surface 24, so that when the ultrasonic shell 60 moves relative to the liquid storage container 30 in a direction perpendicular to the fitting surface 24, the focused ultrasonic piezoelectric element 62 is driven to move, that is, the ultrasonic assembly 32 moves as a whole. Alternatively, the focused ultrasonic piezoelectric element 62 and the ultrasonic shell 60 may be movably matched in a direction perpendicular to the fitting surface 24, so that the focused ultrasonic piezoelectric element 62 moves relative to the ultrasonic shell 60.

[0069] It can be understood that the ultrasonic shell 60 or the focused ultrasonic piezoelectric element 62 moves relative to the fitting surface, and a driving member such as a motor or a cylinder can be provided to drive the ultrasonic shell 60 or the focused ultrasonic piezoelectric element 62 to move.

[0070] In another embodiment, at least two focused ultrasound units are arranged in a direction perpendicular to the bonding surface 24, and the distances between the focused ultrasound units arranged in this direction and the bonding surface 24 are different. Therefore, by controlling the operation of different focused ultrasound units arranged in this direction, the depth of action of the focused ultrasound energy can be different, and the depth of action of the focused ultrasound energy can be adjusted without driving the focused ultrasound piezoelectric element 62 or the ultrasound shell 60 to move.

[0071] In one embodiment, the control module 22 includes several circuit boards, which are located in the handle shell and / or the head shell 23, and the ultrasonic component 32, skin sensor 18, color sensor 26, battery and other components are electrically connected to the corresponding circuit boards.

[0072] In the present application, circuit boards are provided in the handle shell and the head shell 23. The circuit board in the handle shell is electrically connected to the circuit board in the head shell 23. The battery is electrically connected to the circuit board in the handle shell. The ultrasonic module 20, the skin sensor 18 and the color sensor 26 are all electrically connected to the circuit board in the head shell 23.

[0073] The present application also provides a control method for the above ultrasonic cosmetic device, comprising the following steps:

[0074] The control module controls the ultrasonic module to transmit ultrasonic waves to the beauty area, receives the reflected ultrasonic echoes, and obtains ultrasonic signal data based on the ultrasonic echoes, wherein the ultrasonic signal data includes at least one of the following: ultrasonic signal transmission time and ultrasonic echo signal strength;

[0075] In this embodiment, the ultrasonic wave emitted by the ultrasonic beauty head to the beauty area will be reflected when it encounters the subcutaneous tissue of the skin, and the ultrasonic module can receive the reflected ultrasonic echo. The time difference between the emission of the ultrasonic wave and the reception of the ultrasonic echo is used as the ultrasonic signal transmission time. The inner diameter of the subcutaneous tissue, that is, the size of the radial size of the subcutaneous tissue, is determined according to the intensity of the ultrasonic echo. The size of the inner diameter of the subcutaneous tissue is used to indicate the thickness of the subcutaneous tissue. The ultrasonic signal transmission time will be different for different depths of the subcutaneous tissue. The greater the depth, the longer the ultrasonic signal transmission time. The thickness of the subcutaneous tissue is different, and the strength of the ultrasonic echo signal is also different. The thinner the subcutaneous tissue, the smaller the ultrasonic echo signal strength, and the thicker the subcutaneous tissue, the greater the ultrasonic echo signal strength.

[0076] determining subcutaneous tissue data of the beauty area according to the ultrasound signal data;

[0077] In this embodiment, the subcutaneous tissue includes at least one of the following: blood vessels and nerves. The subcutaneous tissue data includes the depth and thickness of the subcutaneous tissue, that is, the depth and thickness of the blood vessels and nerves. The skin tissue data is used to indicate the state parameters of the skin in contact with the contact surface.

[0078] Based on the subcutaneous tissue data, the control module controls the driving component of the ultrasonic module to drive the ultrasonic component to move, and controls the ultrasonic energy output by the ultrasonic component.

[0079] The ultrasonic module includes a driving component and an ultrasonic component connected to the driving component. The driving component can drive the ultrasonic component to move to adjust the relative position of the ultrasonic component so that the ultrasonic energy generated by the ultrasonic component acts on different positions and / or depths of the beauty area, and controls the ultrasonic energy output by the ultrasonic component according to the subcutaneous tissue data to avoid skin tissue and prevent damage. Although the distribution of skin tissue, subcutaneous tissue depth, and subcutaneous tissue thickness may be different for each person, controlling the movement of the ultrasonic component and the output of ultrasonic energy based on the calculated subcutaneous tissue data is more in line with the actual situation of the user, so as to achieve better beauty effects while reducing safety hazards.

[0080] In some embodiments, determining subcutaneous tissue data of the beauty area according to the ultrasound signal data includes:

[0081] Determine the subcutaneous tissue depth of the cosmetic area based on the ultrasound signal transmission time; and / or

[0082] The inner diameter of the subcutaneous tissue in the cosmetic area is determined based on the intensity of the ultrasound echo signal.

[0083] When the depth of subcutaneous tissue is less than the preset depth, the control module controls the ultrasonic component not to work or reduces the output ultrasonic energy. When the inner diameter of the subcutaneous tissue is greater than the preset inner diameter, the control module controls the ultrasonic component not to work or reduces the output ultrasonic energy to reduce the risk of damaging the subcutaneous tissue.

[0084] It can be understood that the preset depth can be a range or a specific value, which can be a value of a specific depth or a value determined according to the depth level of the subcutaneous tissue. Similarly, the preset inner diameter can be a range or a specific value, which can be a value of a specific inner diameter or a value determined according to the inner diameter level of the subcutaneous tissue.

[0085] In some embodiments, the ultrasound assembly includes a plurality of focused ultrasound units, and the control method further includes:

[0086] In the beauty area, the single-point output mode is first used to control the output of the ultrasonic component. After the single-point output mode reaches the single-point mode stop condition, the multi-point output mode is used to control the output of the ultrasonic component. The single-point output mode indicates a mode in which one focused ultrasonic unit works, and the multi-point output mode indicates a mode in which two or more focused ultrasonic units work simultaneously.

[0087] In this embodiment, the control component can control one or more focused ultrasound units to work, forming a single-point output mode or a multi-point output mode. In the prior art, a single-point output mode is generally used to repeatedly output ultrasonic energy at the same position in an area, which will cause soreness or pain in the area. In some implementations, when there are multiple focused ultrasound units, since the multiple focused ultrasound units are located at different positions, the ultrasonic energy generated acts on different parts respectively. A single focused ultrasound unit can be used cyclically to act on the beauty area first, and after the single-point mode stop condition is reached, a multi-point output mode can be used to act on the beauty area, which can alleviate the soreness and pain in a certain area, so as to enhance the user experience and beauty effect. The single-point mode stop conditions include but are not limited to: the single-point mode usage time exceeds the preset time, the number of cyclic outputs of multiple focused ultrasound units exceeds the preset number of times, etc.

[0088] In some embodiments, before the control module controls the ultrasonic module to transmit ultrasonic waves to the beauty area, the control method further includes:

[0089] The color sensor recognizes the color of the mask placed against the fitting surface;

[0090] When the control component determines that the current beauty area is a non-working area according to the color feedback from the color sensor, the ultrasonic module is controlled not to transmit ultrasonic waves to the beauty area;

[0091] When the control component determines that the current beauty area is the working area according to the color fed back by the color sensor, the control component controls the ultrasonic module to transmit ultrasonic waves to the beauty area.

[0092] In this embodiment, the ultrasonic beauty device is used in conjunction with a facial mask. Before controlling the ultrasonic module to emit ultrasonic waves to the beauty area, a color sensor can be used to determine whether the beauty area is a working area. When the beauty area is determined to be a working area, the ultrasonic module is controlled to output ultrasonic energy, thereby reducing damage to the human body and reducing safety hazards.

[0093] In some embodiments, the ultrasonic beauty device further includes a skin sensor, and the skin sensor is used to detect the fit state between the fit surface and the skin. The control method further includes:

[0094] When the skin sensor detects that the current signal is greater than a preset value, a start signal is generated, and the ultrasonic module is controlled to start according to the start signal;

[0095] When the skin sensor detects that the current signal is less than or equal to a preset value, a stop signal is generated, and the ultrasonic module is controlled not to start or to stop working according to the stop signal.

[0096] When the fitting surface is in contact with the skin, the skin sensor and the human body form a loop, so that the current signal can be detected. The current signals detected when the fitting surface is fully in contact with the skin and partially in contact with the skin are different, so as to judge the fitting state and control the ultrasonic module to work only when the fitting surface is fully in contact with the skin, ensuring that the actual depth of the ultrasonic wave is consistent with the expected depth.

[0097] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An ultrasonic beauty device, characterized in that: It comprises a handle and an ultrasonic beauty head mounted on the handle, and the ultrasonic beauty head comprises: A head, comprising a head shell and a fitting surface located at one end of the head shell and used for fitting with the skin; A skin sensor is located inside the head shell, the skin sensor is annular and is arranged close to the fitting surface, the skin sensor is spaced from the fitting surface in a direction perpendicular to the fitting surface, and the skin sensor is used to detect the fitting state between the fitting surface and the skin; An ultrasonic module, arranged corresponding to the head, for detecting state parameters of the skin in contact with the contact surface; A control module is electrically connected to the ultrasonic module and the skin sensor, and is used to receive the fitting status fed back by the skin sensor to control the status of the ultrasonic module; and when the ultrasonic module is in the started state, adjust the ultrasonic energy output by the ultrasonic module according to the status parameters fed back by the ultrasonic module.

2. The ultrasonic beauty device according to claim 1, characterized in that: The inner contour of the projection of the skin sensor on the fitting surface coincides with the outer contour of the fitting surface, or is located inside the outer contour of the fitting surface.

3. The ultrasonic beauty device according to claim 1, characterized in that: The ultrasonic module includes a liquid storage container with a liquid storage cavity, a propagation medium stored in the liquid storage cavity, and an ultrasonic component immersed in the propagation medium. The ultrasonic component is electrically connected to the control module and is arranged corresponding to the bonding surface.

4. The ultrasonic beauty device according to claim 3, characterized in that: The liquid storage container is provided with an opening on one side facing the fitting surface, the opening is communicated with the liquid storage cavity, and the projection of the opening on the fitting surface is located on the inner side of the projection of the skin sensor on the fitting surface.

5. The ultrasonic beauty device according to claim 4, characterized in that: The liquid storage container includes a body and a protrusion extending from the body toward the fitting surface, the opening passes through the protrusion, the ultrasonic component is arranged at one end of the body close to the protrusion, and the skin sensor is arranged around the outer side of the protrusion.

6. The ultrasonic cosmetic device according to claim 5, characterized in that: The head shell is provided with an escape opening corresponding to the protruding portion of the liquid storage container, and the escape opening is communicated with the opening. The head also includes a waterproof component provided on the head shell and covering the escape opening.

7. The ultrasonic cosmetic device according to claim 6, characterized in that: A recessed portion is provided on the outer side of the head shell, and the recessed portion surrounds the outer periphery of the avoidance opening. The waterproof component is installed in the recessed portion, and the outer surface of the waterproof component is flush with the end surface of the head shell.

8. The ultrasonic beauty device according to claim 3, characterized in that: The ultrasonic component includes an ultrasonic shell and a focused ultrasonic piezoelectric element located in the ultrasonic shell, the ultrasonic shell is provided with a mounting portion for mounting the focused ultrasonic piezoelectric element, the focused ultrasonic piezoelectric element includes a plurality of focused ultrasonic units, and the control module is used to control one or more of the focused ultrasonic units to generate focused ultrasonic energy.

9. The ultrasonic beauty device according to claim 8, characterized in that: The ultrasonic housing and the liquid storage container are movably matched in a direction perpendicular to the fitting surface; or The focused ultrasonic piezoelectric element and the ultrasonic shell are movably matched in a direction perpendicular to the fitting surface; or At least two of the focused ultrasound units are arranged along a direction perpendicular to the bonding surface.

10. The ultrasonic cosmetic device according to any one of claims 1 to 9, characterized in that: The head also includes a color sensor installed on the head shell, and the color sensor is electrically connected to the control module. The color sensor is used to identify the colors of different areas of the mask attached to the fitting surface. The control module is used to receive the color feedback from the color sensor and control the working state of the ultrasonic module.

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