Skin care equipment

Abstract

The utility model discloses skin care equipment. The skin care equipment comprises a shell, a medium shell, a transducer assembly, a second circuit board assembly and a fan, the shell is further provided with a first air opening and a second air opening. The medium shell is at least partially arranged in the shell, a medium cavity is formed in the medium shell or between the medium shell and the shell, and the medium cavity is used for storing an ultrasonic conduction medium; the transducer assembly is arranged in the medium chamber; the second circuit board assembly is arranged in the shell, the second circuit board assembly is arranged outside the medium cavity and electrically connected with the transducer assembly, and the second circuit board assembly is located between the first air opening and the second air opening; the fan is installed in the shell and located between the first air opening and the second air opening, and the fan is used for driving air inside and outside the shell to conduct convection through the first air opening and the second air opening so as to at least conduct heat dissipation on the second circuit board assembly. The heat dissipation effect of the second circuit board assembly can be improved through the fan.

Description

Technical Field

[0001] The present invention relates to the field of beauty technology, and in particular to a skin care device. Background Art

[0002] Ultrasound skin care, such as microfocused ultrasound (MFU) cosmetic technology, is a common skin care method in the medical aesthetics industry. During skin care, the ultrasonic transducer within the ultrasound skin care device generates focused ultrasound waves, which form subcutaneous skin care points, thereby achieving anti-aging and lifting effects.

[0003] Specifically, ultrasonic skin care devices surpass the depth limitations of traditional non-surgical devices, penetrating deep into the SMAS fascia layer. Ultrasonic energy concentrates at the skin treatment point, generating high temperatures that contract the target tissue beneath the skin and stimulate collagen regeneration, achieving anti-aging, wrinkle-removing, firming, and contour-contracting effects. For example, the energy waves generated by the ultrasonic transducer act directly on the fascia layer, causing it to contract.

[0004] In the related art, the circuit board assembly of the ultrasonic skin care device generates a large amount of heat during operation, thereby affecting the use of the ultrasonic skin care device. Utility Model Content

[0005] An embodiment of the present application provides a skin care device that can improve the heat dissipation effect at the second circuit board assembly.

[0006] The present invention provides a skin care device, comprising:

[0007] A housing, wherein the housing is provided with a sound outlet area, and the housing is further provided with a first air outlet and a second air outlet;

[0008] a dielectric shell, wherein the dielectric shell is at least partially disposed within the outer shell, and a dielectric chamber is formed between the dielectric shell or the dielectric shell and the outer shell, and the dielectric chamber is used to store an ultrasonic conductive medium;

[0009] a transducer assembly, the transducer assembly being disposed in the medium chamber, wherein the ultrasonic focus of the transducer assembly passes through the sound output area so as to be emitted into the skin to be treated;

[0010] a second circuit board assembly, the second circuit board assembly being disposed in the housing, the second circuit board assembly being disposed outside the dielectric chamber and electrically connected to the transducer assembly, the second circuit board assembly being located between the first air outlet and the second air outlet; and

[0011] A fan is installed in the housing, the fan is located between the first air outlet and the second air outlet, and the fan is used to drive the air inside and outside the housing to convect through the first air outlet and the second air outlet to dissipate heat for at least the second circuit board assembly.

[0012] In an embodiment of the present application, the fan can drive the air inside and outside the casing to convect through the first air outlet and the second air outlet, so that the air can flow through the second circuit board assembly between the first air outlet and the second air outlet for heat dissipation, and since the second circuit board assembly is arranged between the first air outlet and the second air outlet, the flowing wind can flow through the heat-generating area on the second circuit board assembly to a greater extent, thereby improving the heat dissipation effect of the second circuit board assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and beneficial effects of the present application apparent.

[0014] Figure 1 This is a schematic diagram of the structure of the skin care device provided in an embodiment of the present application.

[0015] Figure 2 for Figure 1 A cross-sectional view of the skin care device along the AA direction is shown.

[0016] Figure 3 for Figure 2 The diagram shows a first installation structure diagram of the transmission shaft assembly and the transducer assembly.

[0017] Figure 4 for Figure 2 The diagram shows a second installation structure diagram of the transmission shaft assembly and the transducer assembly.

[0018] Figure 5 for Figure 2 The third installation structure diagram of the transmission shaft assembly and the transducer assembly is shown.

[0019] Figure 6 for Figure 3 A local enlarged view of point Y in the figure.

[0020] Figure 7 for Figure 3 Exploded view of the drive shaft assembly and transducer assembly shown.

[0021] Figure 8 for Figure 3 A perspective view of the drive shaft assembly and transducer assembly is shown.

[0022] Figure 9 for Figure 1A partial cross-sectional view of the skin care device along the AA direction is shown.

[0023] Figure 10 for Figure 9 Schematic diagram of the structure of the elastic deformation component shown.

[0024] Figure 11 for Figure 9 Schematic diagram of the structure of the sound-transmitting membrane shown.

[0025] Figure 12 for Figure 9 A cross-sectional view of the dielectric housing is shown.

[0026] Figure 13 for Figure 9 A structural schematic diagram of the dielectric shell shown.

[0027] Figure 14 for Figure 2 The assembly diagram of the drive assembly, transmission shaft assembly and medium housing is shown.

[0028] Figure 15 for Figure 14 sectional view of .

[0029] Figure 16 for Figure 14 The diagram shows a second transmission structure of the drive assembly and the transmission shaft assembly.

[0030] Figure 17 17a and 17b in are Figure 14 Schematic diagrams of the third and fourth transmission structures of the drive assembly and the transmission shaft assembly are shown.

[0031] Figure 18 for Figure 9 The structural diagram of the second mounting bracket shown Figure 1 .

[0032] Figure 19 for Figure 9 A schematic structural diagram of the second mounting bracket and the drive assembly is shown.

[0033] Figure 20 for Figure 1 The structure diagram of the skin care device is shown with a portion of the shell removed.

[0034] Figure 21 for Figure 2 The schematic diagram of the structure of the second circuit board assembly and the driving assembly is shown.

[0035] Figure 22 for Figure 1 The structure diagram of the skin care device shown is after removing another part of the shell.

[0036] Figure 23 for Figure 2 A partial enlarged view of the X in FIG.

[0037] Figure 24 for Figure 23 Schematic diagram of the structure of the electrode sheet shown.

[0038] Figure 25 for Figure 8 Exploded view of the drive shaft assembly shown.

[0039] Figure 26 for Figure 9 Schematic diagram of the structure of the elastic deformation component shown.

[0040] Figure 27 for Figure 9 The structural diagram of the second mounting bracket shown Figure 2 . DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0042] Please refer to Figure 1 and Figure 2 The present invention provides a skin care device, including a housing 100 and a skin care component 200a. The housing 100 has a working area 111a. The skin care component 200a is disposed on the housing 100 and is used to care for the skin to be treated from the side of the housing 100 where the working area 111a is located.

[0043] Specifically, the skin care device is an ultrasonic beauty instrument, the working area 111a includes a sound output area 111, and the skin care component 200a includes a transducer component 200. The ultrasonic focus of the transducer component 200 passes through the sound output area 111 for injection into the skin to be treated.

[0044] Of course, according to needs, the skin care device can also have more functions. For example, the skin care component 200a can also include at least one of an electrical stimulation component, a light-type skin care component and a heat-type skin care component. This embodiment of the present application does not limit this.

[0045] In some embodiments, the skin care device may further include a transmission shaft assembly 300, which is movably disposed within the housing 100. The transducer assembly 200 is mounted on one end of the transmission shaft assembly 300 near the sound output region 111, so that the transmission shaft assembly 300 can drive the transducer assembly 200 to move. Thus, the position of the ultrasonic focus of the transducer assembly 200 can be adjusted via the transmission shaft assembly 300, thereby improving the skin care effect of the skin care device.

[0046] The ultrasonic focus of the transducer assembly 200 is a focal point formed by focusing the ultrasonic energy generated by the transducer assembly 200 .

[0047] In some embodiments, the skin care device may further include a drive assembly 400, which is disposed in the housing 100 and is used to drive the transducer assembly 200 to move, thereby adjusting the position of the ultrasonic focus of the transducer assembly 200 to improve the care effect of the skin care device.

[0048] It should be noted that the skin care device may be provided with only one of the transmission shaft assembly 300 and the drive assembly 400, or may be provided with both the transmission shaft assembly 300 and the drive assembly 400. For example, when the skin care device is provided with only the transmission shaft assembly 300, the user may manually drive the transmission shaft assembly 300 to move, thereby indirectly driving the transducer assembly 200 to move; when the skin care device is provided with only the transmission shaft assembly 300, the drive assembly 400 may be directly connected to the transducer assembly 200 to drive the transducer assembly 200 to move; when the skin care device is provided with both the transmission shaft assembly 300 and the drive assembly 400, the drive assembly 400 may drive the transducer assembly 200 to move via the transmission shaft assembly 300. This embodiment of the present application is not limited to this.

[0049] The above is an overall description of the skin care device. The technical solution of the embodiment of the present application will be explained and illustrated in conjunction with the transmission shaft assembly 300.

[0050] In some embodiments, the transmission shaft assembly 300 is rotatably mounted in the housing 100 around the first axis L1 to rotate the ultrasonic focus of the transducer assembly 200 around the first axis L1; and / or, the transmission shaft assembly 300 is also used to move along the extension direction of the first axis L1 to drive the transducer assembly 200 to move in the extension direction of the first axis L1 so as to move the transducer assembly 200 closer to or away from the sound output area 111.

[0051] It should be noted that, in this application, "and / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / ", unless otherwise specified, generally indicates that the associated objects are in an "or" relationship.

[0052] That is to say, the transmission shaft assembly 300 can be installed in the housing 100 so as to be rotatable only around the first axis L1, or can be installed in the housing 100 so as to be movably only along the first axis L1, or can be installed in the housing 100 so as to be rotatable around the first axis L1 and movably along the first axis L1. The embodiments of the present application do not limit this.

[0053] Then, taking the example of the drive shaft assembly 300 being rotatable around the first axis L1 and movably installed in the housing 100 along the first axis L1, when the skin care device is working, on the one hand, the drive shaft assembly 300 can drive the transducer assembly 200 to move along the first axis L1 to drive the transducer assembly 200 close to or away from the sound output area 111, so that the ultrasonic focus of the transducer assembly 200 can be adjusted to be at different depths inside the skin to be treated, so as to perform ultrasonic skin care on skin at different subcutaneous depths; on the other hand, the drive shaft assembly 300 can drive the transducer assembly 200 to rotate around the first axis L1 to drive the ultrasonic focus of the transducer assembly 200 to rotate around the first axis L1, so that the ultrasonic focus of the transducer assembly 200 can act on different positions at the same depth inside the skin to be treated, so as to perform ultrasonic skin care, thereby increasing the effective area of ultrasonic skin care and improving the skin care effect.

[0054] It can be seen that the embodiment of the present application can adjust the position of the ultrasonic focus of the transducer assembly 200 under the skin through the transmission shaft assembly 300 to achieve ultrasonic skin care for different parts of the same depth inside the skin to be treated and / or different parts of different depths.

[0055] It can be understood that the first axis L1 can be the axis center line of the transmission shaft assembly 300 .

[0056] In some embodiments, the ultrasonic focus of the transducer assembly 200 is misaligned with the first axis L1, so that when the transducer assembly 200 rotates around the first axis L1 following the transmission shaft assembly 300, the ultrasonic focus of the transducer assembly 200 can rotate around the first axis L1.

[0057] For example, please refer to Figure 3The transducer assembly 200 includes an ultrasonic transducer 21. The ultrasonic transducer 21 (or the axis of the transducer assembly 200) is tilted relative to the first axis L1 so that the ultrasonic focus of the transducer assembly 200 is misaligned with the first axis L1. In other words, the axis of the ultrasonic transducer 21 is tilted relative to the first axis L1 so that the focus of the transducer assembly 200 is misaligned with the first axis L1.

[0058] It can be understood that by tilting the transducer assembly 200, the end away from the sound output area 111 can be moved closer to the first axis L1, thereby reserving more space for setting up other structures, which is conducive to the miniaturization design of the skin care device; it can also reduce the movement amplitude of the transducer assembly 200, thereby reducing the pressure change amplitude in the medium chamber to be introduced later.

[0059] It should be noted that, when the skin care device is working, an ultrasonic focus may be formed that is continuously distributed around the first axis L1, or an ultrasonic focus may be formed that is discontinuously distributed around the first axis L1.

[0060] Optional, please continue to refer to Figure 4 The transducer assembly 200 includes an ultrasonic transducer 21, which is eccentrically arranged with respect to the first axis L1, so that the ultrasonic focus of the transducer assembly 200 is misaligned with the first axis L1.

[0061] It is understandable that when the ultrasonic transducer 21 is eccentrically disposed with respect to the first axis L1 , the transducer assembly 200 (or the axis of the transducer assembly 200 ) may be parallel to the first axis L1 .

[0062] In some embodiments, the transducer assembly 200 is fixed to the drive shaft assembly 300 so as to be non-rotatable and non-movable relative to the drive shaft assembly 300, thereby improving the reliability of the installation of the transducer assembly 200. However, when the drive shaft assembly 300 drives the transducer assembly 200 to rotate, the power cord connected to the transducer assembly 200 may become tangled, eventually causing the drive shaft assembly 300 to become stuck.

[0063] like Figure 3 As shown, based on this, in order to prevent the power cord connected to the transducer assembly 200 from becoming entangled, in a first embodiment, the ultrasonic transducer 21 is rotatably mounted on the drive shaft assembly 300 about the second axis L2. This allows the transducer assembly 200 to rotate relative to the drive shaft assembly 300 about the second axis L2 when the drive shaft assembly 300 drives the transducer assembly 200 to move, thereby preventing entanglement. In other words, by changing the fixed connection between the transducer assembly 200 and the drive shaft assembly 300 from being relatively non-rotatable to a connection that allows rotation about the second axis L2, entanglement is avoided.

[0064] It should be noted that the ultrasonic transducer 21 is rotatably mounted on the drive shaft assembly 300 about the second axis L2. The transducer assembly 200 may be rotatably mounted on the drive shaft assembly 300 as a whole about the second axis L2, thereby enabling the ultrasonic transducer 21 to be rotatably mounted on the drive shaft assembly 300 about the second axis L2. The ultrasonic transducer 21 may be rotatably mounted on the drive shaft assembly 300 about the second axis L2, or the transducer assembly 200 may include a first mounting bracket 22 on which the ultrasonic transducer 21 is mounted, and the ultrasonic transducer 21 is rotatably mounted on the first mounting bracket 22 about the second axis L2, thereby enabling the ultrasonic transducer 21 to be rotatably mounted on the drive shaft assembly 300 about the second axis L2. This embodiment of the present application is not limited to this.

[0065] It can also be understood that, as mentioned above, the drive shaft assembly 300 can be used to drive the transducer assembly 200 to move along the first axis L1 and / or drive the transducer assembly 200 to rotate around the first axis L1; accordingly, the transducer assembly 200 is rotatably mounted on the drive shaft assembly 300 around the second axis L2, which can also be used to avoid entanglement when the drive shaft assembly 300 drives the transducer assembly 200 to move and / or rotate. The embodiments of the present application are not limited to this.

[0066] Taking the example of the drive shaft assembly 300 being used to drive the transducer assembly 200 to rotate about the first axis L1, the transducer assembly 200 (e.g., the ultrasonic transducer 21) is provided with a first electrical connection terminal 211 for connecting an electrical connection line. During the process of the drive shaft assembly 300 driving the transducer assembly 200 to move, the transducer assembly 200 can rotate relative to the drive shaft assembly 300 about the second axis L2 so that the first electrical connection terminal 211 can always face the same side of the circumference of the first axis L1 during the movement of the transducer assembly 200, thereby avoiding entanglement. In other words, the power cord connected to the transducer assembly 200 is prevented from being entangled around the drive shaft assembly 300 or the circumference of the transducer assembly 200, thereby causing entanglement.

[0067] In some embodiments, the second axis L2 may be the axis of the ultrasonic transducer 21, or the second axis L2 may be parallel to the axis of the ultrasonic transducer 21. For example, when the axis of the ultrasonic transducer 21 is tilted relative to the first axis L1, the second axis L2 may be tilted relative to the first axis L1; when the axis of the ultrasonic transducer 21 is parallel to the first axis L1, the second axis L2 may be parallel to the first axis L1. This embodiment of the present application is not limited to this.

[0068] Please continue to refer to Figure 5Optionally, in a second embodiment, to prevent the power cord connected to the transducer assembly 200 from becoming entangled, the drive shaft assembly 300 has a lead hole 311 extending along the extension direction of the first axis L1. The electrical connection wires connected to the transducer assembly 200 are led out of the lead hole 311 to prevent the wires from becoming entangled when the drive shaft assembly 300 drives the transducer assembly 200 to rotate. That is, when the drive shaft assembly 300 drives the transducer assembly 200 to rotate, the power cord connected to the transducer assembly 200 can be prevented from becoming entangled on the outer periphery of the drive shaft assembly 300.

[0069] Illustratively, the skin care device may include a first electrical connection line 23, one end of which is connected to the first electrical connection terminal 211 of the transducer assembly 200, and the other end of which is at least partially located within the lead hole 311. The drive shaft assembly 300 may be provided with a second electrical connection terminal 312, which is electrically connected to the other end of the first electrical connection line 23. The drive shaft assembly 300 also includes an electrical connection structure that can be connected to a circuit board of the skin care device, and the second electrical connection terminal 312 can be rotatably electrically connected to the electrical connection structure.

[0070] Optionally, the electrical connection structure may be a socket having a circular and / or annular jack, and the socket is disposed inside the lead hole 311 or outside the lead hole 311 and corresponding to the lead hole 311 .

[0071] Optionally, the electrical connection structure may be an annular conductive portion 313 .

[0072] Specifically, the second electrical connection terminal 312 is at least partially exposed on the circumferential surface of the transmission shaft assembly 300 for electrical connection. The electrical connection structure is an annular conductive portion 313. The annular conductive portion 313 is rotatably mounted on the transmission shaft assembly 300 and slides against the second electrical connection terminal 312 to form an electrical connection. Furthermore, when the transmission shaft assembly 300 rotates, the second electrical connection terminal 312 slides on the annular conductive portion 313 and can always be electrically connected to the annular conductive portion 313. The annular conductive portion 313 does not rotate about the first axis L1, so that other power lines can be connected to the annular conductive portion 313 for power supply.

[0073] Please continue to refer to Figure 6 and Figure 7In some embodiments, a first support surface 321 is provided at one end of the transmission shaft assembly 300 near the sound output region 111, and the transducer assembly 200 is mounted on the first support surface 321. The first support surface 321 can be inclined relative to the first axis L1, so that the transducer assembly 200 is tilted relative to the first axis L1. Furthermore, the first support surface 321 can provide better support for the tilted transducer assembly 200, thereby improving the stability and reliability of the transducer assembly 200 during rotation. For example, the axis of the ultrasonic transducer 21 can be perpendicular to the first support surface 321.

[0074] Of course, the first supporting surface 321 may also be perpendicular to the first axis L1. For example, the first supporting surface 321 may be perpendicular to the first axis L1, and the transducer assembly 200 may be eccentrically disposed on the first supporting surface 321 so that the ultrasonic focus of the transducer assembly 200 is misaligned with the first axis L1. This embodiment of the present application is not limited to this.

[0075] In some embodiments, the transducer assembly 200 is movably mounted on the first support surface 321 so that the distance between the ultrasonic focus of the transducer assembly 200 and the first axis L1 is adjustable, and / or the transducer assembly 200 is rotatably mounted on the first support surface 321 along a third axis so that the angle between the transducer assembly 200 and the first support surface 321 is adjustable.

[0076] That is to say, the distance between the ultrasonic focus of the transducer assembly 200 and the first axis L1 may be adjustable, while the angle between the transducer assembly 200 and the first supporting surface 321 may not be adjustable; the distance between the ultrasonic focus of the transducer assembly 200 and the first axis L1 may not be adjustable, while the angle between the transducer assembly 200 and the first supporting surface 321 may be adjustable; or the distance between the ultrasonic focus of the transducer assembly 200 and the first axis L1 may be adjustable, and the angle between the transducer assembly 200 and the first supporting surface 321 may be adjustable. The embodiments of the present application do not limit this.

[0077] When the distance between the ultrasonic focus of the transducer assembly 200 and the first axis L1 is adjustable, the rotation radius of the ultrasonic focus about the first axis L1 can be adjusted, thereby achieving skin care for a large or small area. For example, the transducer assembly 200 can be slidably mounted on the first support surface 321, so that the transducer assembly 200 can slide along the first support surface 321, thereby moving the ultrasonic focus of the transducer assembly 200 away from the first axis L1.

[0078] Similarly, when the angle between the transducer assembly 200 and the first supporting surface 321 is adjustable, the rotation radius of the ultrasound focus around the first axis L1 can be adjusted, thereby achieving care for a large area or a small area on the skin.

[0079] In some embodiments, the inclination angle between the first support surface 321 and the first axis L1 is adjustable, so that the angle between the transducer assembly 200 installed on the first support surface 321 and the first axis L1 can be adjusted accordingly, thereby adjusting the rotation radius of the ultrasonic focus around the first axis L1, and ultimately achieving care for a large area or a small area on the skin.

[0080] In some embodiments, the transducer assembly 200 is rotatably mounted on the first support surface 321 about the second axis L2 to prevent the transducer assembly 200 from being entangled when the transmission shaft assembly 300 drives the transducer assembly 200 to rotate.

[0081] For example, as mentioned above, the transducer assembly 200 is provided with a first electrical connection terminal 211 for connecting an electrical connection line. When the drive shaft assembly 300 drives the transducer assembly 200 to move, the transducer assembly 200 can rotate relative to the drive shaft assembly 300 about the second axis L2 so that the first electrical connection terminal 211 can always face the same side of the circumference of the first axis L1 during the movement of the transducer assembly 200, thereby preventing the power cord connected to the transducer assembly 200 from being entangled around the drive shaft assembly 300 or the transducer assembly 200 in the circumferential direction, thereby preventing the power cord connected to the transducer assembly 200 from being entangled around the drive shaft assembly 300 or the transducer assembly 200, thereby causing entanglement.

[0082] In summary, for the above two settings of the ultrasonic transducer 21, the ultrasonic transducer 21 is tilted relative to the first axis L1 so that the ultrasonic focus of the transducer assembly 200 is misaligned with the first axis L1; and the ultrasonic transducer 21 is eccentrically arranged relative to the first axis L1 so that the ultrasonic focus of the transducer assembly 200 is misaligned with the first axis L1, both of which can utilize the above anti-tangling scheme, namely: a skin care device, comprising: a housing 100, the housing 100 is provided with a sound output area 111; a transmission shaft assembly 300, the transmission shaft assembly 300 is movably arranged in the housing 100; and, a transducer assembly 200, the transducer assembly 200 is installed on the transmission shaft assembly 300 near the sound output area 111. At one end, the ultrasonic focus of the transducer assembly 200 passes through the sound output area 111 for irradiation into the skin to be treated; wherein, the transmission shaft assembly 300 is rotatably mounted in the housing 100 around the first axis L1, and the ultrasonic focus of the transducer assembly 200 is misaligned with the first axis L1, so as to enable the ultrasonic focus of the transducer assembly 200 to rotate around the first axis L1; the transducer assembly 200 includes an ultrasonic transducer 21, which is rotatably mounted on the transmission shaft assembly 300 around the second axis L2, so as to enable the transducer assembly 200 to rotate relative to the transmission shaft assembly 300 around the second axis L2 when the transmission shaft assembly 300 drives the transducer assembly 200 to move, so as to avoid entanglement. Alternatively, a skin care device comprises: a housing 100, wherein the housing 100 is provided with a sound emitting area 111; a transmission shaft assembly 300, wherein the transmission shaft assembly 300 is movably arranged in the housing 100; and a transducer assembly 200, wherein the transducer assembly 200 is mounted at one end of the transmission shaft assembly 300 close to the sound emitting area 111, and the ultrasonic focus of the transducer assembly 200 passes through the sound emitting area 111 for irradiating the skin to be treated; wherein the transmission shaft assembly 300 is rotatably mounted in the housing 100 around a first axis L1, and the ultrasonic focus of the transducer assembly 200 passes through the sound emitting area 111 for irradiating the skin to be treated. The focus is offset from the first axis L1 so as to rotate the ultrasonic focus of the transducer assembly 200 about the first axis L1. The transducer assembly 200 includes an ultrasonic transducer 21. The drive shaft assembly 300 has a lead hole 311 extending along the extension direction of the first axis L1. The electrical connection wire connected to the transducer assembly 200 is led out from the lead hole 311. The skin care device may include a first electrical connection wire 23, one end of which is connected to the first electrical connection terminal 211 of the transducer assembly 200, and the other end is at least partially located within the lead hole 311. The drive shaft assembly 300 may be provided with a second electrical connection terminal 312, which is electrically connected to the other end of the first electrical connection wire 23. The drive shaft assembly 300 also includes an electrical connection structure that can be connected to a circuit board of the skin care device. The second electrical connection terminal 312 can be rotatably electrically connected to the electrical connection structure.

[0083] Illustratively, one of the first support surface 321 and the transducer assembly 200 is provided with a first mounting hole 2211, and the other is provided with a mounting shaft 322. The mounting shaft 322 is rotatably mounted in the first mounting hole 2211 along the second axis L2, so that the transducer assembly 200 is rotatably mounted on the first support surface 321 about the second axis L2. The second axis L2 is inclined relative to the first axis L1.

[0084] It is understandable that the axis of the mounting shaft 322 and / or the axis of the first mounting hole 2211 can coincide with the second axis L2, so that the rotational fit of the hole and the shaft can make the rotational installation of the transducer assembly 200 more stable and reliable.

[0085] In some embodiments, the transducer assembly 200 includes a bearing 24. The bearing 24 is disposed between the mounting shaft 322 and the inner wall of the first mounting hole 2211, thereby reducing friction when the transducer assembly 200 rotates about the second axis L2, thereby allowing the transducer assembly 200 to rotate more smoothly about the second axis L2.

[0086] Optionally, the transducer assembly 200 may include a sliding ring 24a, which is arranged between the mounting shaft 322 and the inner wall of the first mounting hole 2211, thereby reducing the friction when the transducer assembly 200 rotates around the second axis L2, so that the transducer assembly 200 can rotate more smoothly around the second axis L2.

[0087] Furthermore, compared to the bearing 24, the sliding ring 24a has the advantage of being less expensive. For example, the sliding ring 24a can be made of metal. Of course, the sliding ring 24a can also be made of a plastic or ceramic material with a lower friction coefficient than the mounting shaft 322, although this embodiment of the present application is not limited thereto.

[0088] Taking the installation shaft 322 disposed on the first support surface 321 as an example, the transducer assembly 200 may further include a sliding gasket 25. A sliding collar 24a is disposed between the installation shaft 322 and the inner wall of the first mounting hole 2211. The sliding gasket 25 is sleeved onto the outside of the installation shaft 322, with one surface of the sliding gasket 25 abutting the first support surface 321 and the other surface abutting the sliding collar 24a and / or the end surface of the opening of the first mounting hole 2211. Thus, the sliding collar 24a can reduce friction on the circumferential surface of the installation shaft 322, and the sliding gasket 25 can further reduce friction on the first support surface 321, allowing the transducer assembly 200 to rotate more smoothly.

[0089] The sliding pad 25 can be a metal part. Of course, the sliding pad 25 can also be made of a plastic material or a ceramic material with a friction coefficient lower than that of the first support surface 321, and this embodiment of the application does not limit this.

[0090] In some embodiments, the first support surface 321 may be provided with a structural recess 3211, with the mounting shaft 322 connected to the bottom wall of the structural recess 3211. The sliding gasket 25 abuts against the end surface of the notch of the structural recess 3211 and covers the notch of the structural recess 3211. This prevents the formation of a protrusion at the junction of the mounting shaft 322 and the first support surface 321 that would abut the sliding gasket 25 during actual manufacturing. This prevents the sliding gasket 25 from tilting relative to the first support surface 321, allowing the sliding gasket 25 to be stably installed on the first support surface 321.

[0091] In some embodiments, the sliding collar 24a may protrude from the end surface of the first mounting hole 2211 on the side facing the first support surface 321. Thus, the sliding gasket 25 abuts between the first support surface 321 and the sliding collar 24a, thereby reducing the contact area and further reducing the friction at the first support surface 321.

[0092] In some embodiments, the transducer assembly 200 further includes a first fastener 26, which includes a connecting portion 261 and a pressing portion 262. The sliding ring 24a is disposed between the mounting shaft 322 and the inner wall of the first mounting hole 2211, and the sliding gasket 25 is sleeved outside the mounting shaft 322. The connecting portion 261 is connected to the mounting shaft 322 so that the pressing portion 262 presses the sliding ring 24a. The pressing portion 262 also forms a sliding ring groove with the first supporting surface 321. The hole wall of the first mounting hole 2211 can be rotatably limited outside the sliding ring groove. That is, the hole wall of the first mounting hole 2211 can be partially located inside the sliding ring groove, thereby forming a limit, and partially located outside the sliding ring groove.

[0093] In some embodiments, the transducer assembly 200 may include a first mounting bracket 22 and an ultrasonic transducer 21. The ultrasonic transducer 21 is mounted on the first mounting bracket 22. Thus, the ultrasonic transducer 21 may be fixed to the drive shaft assembly 300 via the first mounting bracket 22.

[0094] For example, the mounting shaft 322 is disposed on the first supporting surface 321, and the first mounting bracket 22 has a first side surface 2212 disposed opposite the first supporting surface 321, i.e., the first side surface 2212 faces the first supporting surface 321. A side protrusion 2213 is disposed on the first side surface 2212, and the first mounting hole 2211 is disposed on the side protrusion 2213 and extends through the first mounting bracket 22. For example, the side protrusion 2213 may be an annular protrusion disposed around the mounting shaft 322. Thus, the ultrasonic transducer 21 can be mounted by rotating the mounting shaft 322 and the side protrusion 2213.

[0095] In some embodiments, the first mounting bracket 22 is rotatably mounted on the first support surface 321 along the second axis L2, the first mounting bracket 22 has a first side surface 2212 opposite to the first support surface 321 and a second side surface 2214 opposite to the first side surface 2212, and the ultrasonic transducer 21 is mounted on the second side surface 2214.

[0096] In some embodiments, the first support surface 321 is provided with a mounting shaft 322. The first side surface 2212 is provided with a first mounting hole 2211 extending through the first mounting bracket 22. The mounting shaft 322 is rotatably mounted within the first mounting hole 2211 along a second axis L2 that is inclined relative to the first axis L1, thereby allowing the ultrasonic transducer 21 to be rotatably mounted on the first support surface 321. The transducer assembly 200 further includes a first fastener 26 that is fixedly connected to the mounting shaft 322 from the second side surface 2214 to restrict movement of the first mounting bracket 22 along the second axis L2 away from the first support surface 321. Thus, the first fastener 26 enables a relatively rotatable connection between the transducer bracket and the mounting shaft 322, thereby preventing the transducer assembly 200 from falling off the mounting shaft 322.

[0097] In some embodiments, the second side surface 2214 is a bearing surface, and the bearing surface is provided with a receiving groove 2215, and the ultrasonic transducer 21 is disposed in the receiving groove 2215. Thus, the receiving groove 2215 can achieve a better positioning effect for the ultrasonic transducer 21.

[0098] In some embodiments, the second side surface 2214 is a bearing surface having an escape groove 2216 formed thereon, and a gap is formed between the bottom of the escape groove 2216 and the ultrasonic transducer 21 to form a space for installing the first fastener 26 .

[0099] For example, an avoidance groove 2216 is formed on the bottom wall of the accommodating groove 2215, and the end of the first fastener 26 away from the first support surface 321 is accommodated in the avoidance groove 2216 and is spaced apart from the ultrasonic transducer 21, so that during the rotation of the first mounting bracket 22 around the second axis L2 relative to the mounting shaft 322, the ultrasonic transducer 21 is not easily contacted with the first fastener 26 and worn.

[0100] In some embodiments, the first mounting bracket 22 includes a supporting portion 221 and a first engaging portion 222. The supporting portion 221 has a first side surface 2212 and a second side surface 2214. The first engaging portion 222 protrudes from the second side surface 2214. The first engaging portion 222 engages with the ultrasonic transducer 21 to secure the ultrasonic transducer 21 to the supporting portion 221.

[0101] It is understandable that the first engaging portion 222 and the bearing portion 221 may be integrally formed or separately formed, and this embodiment of the present application does not limit this.

[0102] Illustratively, the first engaging portion 222 includes an embedded portion 2221 and an elastic portion 2222. The embedded portion 2221 is embedded in the support portion 221. The elastic portion 2222 is connected to the embedded portion 2221, and is located outside the support portion 221. The end of the elastic portion 2222 facing away from the embedded portion 2221 protrudes from the second side surface 2214. The end of the elastic portion 2222 facing away from the embedded portion 2221 is provided with a buckle and / or a latching protrusion for securing the ultrasonic transducer 21.

[0103] Therefore, the first engaging portion 222 can be made of a material with a higher strength than the supporting portion 221 to improve the stability and reliability of the transducer assembly 200. For example, the first engaging portion 222 can be a metal component. Then, in the actual manufacturing process, the first engaging portion 222 can be placed as an insert in the injection mold to injection mold the supporting portion 221 that surrounds the embedded portion 2221.

[0104] The number of the elastic parts 2222 may be at least two, and the at least two elastic parts 2222 are arranged at intervals along the circumference of the ultrasonic transducer 21 , so as to clamp the ultrasonic transducer 21 from the circumferential side.

[0105] In some embodiments, a first electrical connection line 23 is provided on the side of the ultrasonic transducer 21 facing the second side surface 2214, and a routing notch 2217 is provided on the second side surface 2214. The first electrical connection line 23 is routed through the routing notch 2217. Therefore, it can also be understood that the ultrasonic transducer 21 is routed along the side facing away from the sound output region 111 to prevent the first electrical connection line 23 from being blocked between the ultrasonic transducer 21 and the sound output region 111 during use.

[0106] For example, when the first electrical connection line 23 is routed through the routing notch 2217, the first electrical connection line 23 is connected to the peripheral edge of the surface of the ultrasonic transducer 21 facing the first support surface 321. Furthermore, the first electrical connection line 23 can avoid the mounting axis 322 located in the middle of the ultrasonic transducer 21.

[0107] As mentioned above, the transducer assembly 200 is provided with a first electrical connection terminal 211 , and the first electrical connection terminal 211 may be located at a peripheral edge of a surface of the ultrasonic transducer 21 facing the first support surface 321 .

[0108] In some embodiments, a sealant is provided at the connection between the first electrical connection terminal 211 and the first electrical connection line 23 to improve the stability and reliability of the connection between the first electrical connection terminal 211 and the first electrical connection line 23 .

[0109] In some embodiments, the wiring gap 2217 is provided on the peripheral surface of the first mounting bracket 22 and passes through the first side surface 2212 and the second side surface 2214 to facilitate the wiring of the ultrasonic transducer 21 .

[0110] In some embodiments, the transmission shaft assembly 300 includes a transmission shaft 31 having a first axis L1 and a transmission member 32 mounted on the transmission shaft 31. The first support surface 321 is provided at an end of the transmission member 32 facing away from the transmission shaft 31. Thus, a single transmission member 32 can form a larger first support surface 321, thereby increasing the contact area between the transmission shaft assembly 300 and the transducer assembly 200, i.e., increasing the sealing area, thereby improving the stability and reliability of the installation of the transducer assembly 200.

[0111] For example, one end of the transmission shaft 31 close to the transmission member 32 is arranged in the transmission member 32 to realize the connection between the transmission member 32 and the transmission shaft 31; or, a connecting protrusion is provided on the side of the transmission member 32 away from the first support surface 321, and the connecting protrusion is connected to the transmission shaft 31, such as by a locking screw; or, a connecting plug is provided on the side of the transmission member 32 away from the first support surface 321, and a socket is provided at the free end of the transmission member 32, and the connecting plug is inserted into the socket by interference fit or a locking screw.

[0112] In some embodiments, the transmission shaft 31 is inserted into the transmission member 32 along the first axis L1 to achieve a secure connection between the transmission shaft 31 and the transmission member 32. Furthermore, to ensure reliable installation of the transmission shaft 31, the hole in the transmission member 32 for mounting the transmission shaft 31 is tightly fitted with the transmission shaft 31, making it difficult for the transmission shaft 31 to be inserted sufficiently deep into the transmission member 32 during assembly.

[0113] Please continue to refer to Figure 8 and Figure 25 Based on this, in some embodiments, the transmission member 32 is provided with a limiting groove 323 and an avoiding groove 324. The avoiding groove 324 is located on the side of the limiting groove 323 away from the first support surface 321. The limiting groove 323 and the avoiding groove 324 both penetrate the outer surface of the transmission member 32 toward one side to form a mounting opening 325. The avoiding groove 324 also penetrates the outer surface of the transmission member 32 toward the side away from the limiting groove 323. A limiting protrusion 314 is formed at one end of the transmission shaft 31, and one end of the transmission shaft 31 is arranged in the transmission member 32 through the mounting opening 325, and the limiting protrusion 314 is limited in the limiting groove 323, so that the transmission shaft 31 can drive the transmission member 32 and the transducer assembly 200 to move.

[0114] Then, during the actual assembly process, the transmission shaft 31 can be moved radially and inserted into the transmission member 32 from the installation opening 325 to complete the installation. This side-insertion assembly method has the advantage of easy assembly.

[0115] In this way, by limiting the limiting protrusion 314 in the limiting groove 323, the transmission connection between the transmission shaft 31 and the transmission member 32 can be achieved through the cooperation between the limiting protrusion 314 and the limiting groove 323. When the transmission shaft 31 drives the transducer assembly 200 to move through the transmission member 32, the force transmission can be achieved through the cooperation between the limiting protrusion 314 and the limiting groove 323, thereby ensuring the connection stability between the transmission member 32 and the transmission shaft 31, thereby at least improving the transmission accuracy in the axial direction of the transmission shaft 31, that is, the transmission accuracy of the transmission shaft assembly 300 can be improved.

[0116] Optionally, the limiting protrusion 314 and the limiting groove 323 are interference fit at the limiting position.

[0117] Then, during the actual assembly process, the transmission shaft 31 can be moved radially and inserted into the transmission member 32 from the installation opening 325 to complete the installation. This side-insertion assembly method has the advantage of easy assembly.

[0118] In this way, by limiting the limiting protrusion 314 in the limiting groove 323, the transmission connection between the transmission shaft 31 and the transmission member 32 can be achieved through the cooperation between the limiting protrusion 314 and the limiting groove 323. When the transmission shaft 31 drives the transducer assembly 200 to move through the transmission member 32, the force transmission can be achieved through the cooperation between the limiting protrusion 314 and the limiting groove 323, thereby ensuring the connection stability between the transmission member 32 and the transmission shaft 31, thereby at least improving the transmission accuracy in the axial direction of the transmission shaft 31, that is, the transmission accuracy of the transmission shaft assembly 300 can be improved.

[0119] Specifically, when the transducer assembly 200 is driven to move in the axial direction of the transmission shaft 31 by the transmission shaft assembly 300 to adjust the effective depth of the transducer assembly 200, the limiting protrusion 314 and the limiting groove 323 can achieve zero error (or interference fit) assembly, thereby ensuring and improving the transmission accuracy in the axial direction of the transmission shaft 31.

[0120] In some embodiments, the transmission member 32 further includes a mounting surface 326 and a connecting annular surface 327 connecting the mounting surface 326 and the first supporting surface 321 . The mounting opening 325 is formed on the connecting annular surface 327 .

[0121] For example, the limiting groove 323 extends from the connecting ring surface 327 toward the transmission member 32, and the avoiding groove 324 passes through the mounting surface 326 to the limiting groove 323, and the avoiding groove 324 also passes through the connecting ring surface 327 on the side where the notch of the limiting groove 323 is located to form a side notch, and the side notch and the notch of the limiting groove 323 together form a mounting opening 325.

[0122] Therefore, during the assembly process, the limiting protrusion 314 of the transmission shaft 31 can be easily slid from the installation opening 325 into the limiting groove 323, and the part of the transmission shaft 31 connected to the limiting protrusion 314 on the side away from the sound output area 111 can be slid into the avoidance groove 324 from the side groove of the avoidance groove 324, thereby completing the assembly of the transmission shaft 31.

[0123] In some embodiments, the width of the limiting groove 323 is greater than the width of the avoiding groove 324. Accordingly, the outer diameter of the limiting protrusion 314 can be greater than the width of the avoiding groove 324 to prevent the limiting protrusion 314 from falling off from the avoiding groove 324.

[0124] In some embodiments, the height of the limiting groove 323 is smaller than the height of the avoiding groove 324. This can increase the connection area between the transmission member 32 and the transmission shaft 31, thereby improving the stability and reliability of the installation and enhancing the structural strength.

[0125] The transmission shaft 31 can be formed with a second flat surface 317 that abuts the inner wall of the avoidance groove 324. Therefore, when the transmission shaft assembly 300 is used to drive the transducer assembly 200 to rotate about the first axis L1, the second flat surface 317 can form the driving surface for the transmission shaft 31 to drive the transmission member 32 to rotate about the first axis L1. In this case, the height of the avoidance groove 324 is greater than the height of the limiting groove 323, thereby increasing the contact area between the second flat surface 317 and the transmission member 32, thereby improving the torque resistance of the connection between the transmission member 32 and the transmission shaft 31.

[0126] Optionally, two second planes 317 are provided, respectively disposed on both sides of the transmission shaft 31 in the circumferential direction.

[0127] In this way, by forming the second plane 317 on the transmission shaft 31 to cooperate with the inner wall of the avoidance groove 324, the transmission accuracy in the rotation direction of the transmission shaft 31 can be ensured and improved.

[0128] In some embodiments, a first guiding structure 3231 is provided at the notch of the limiting groove 323 , thereby facilitating the placement of the limiting protrusion 314 into the limiting groove 323 .

[0129] For example, the first guide structure 3231 includes a third chamfer connected between the inner wall of the limiting groove 323 and the connecting annular surface 327 , thereby making the first guide structure 3231 easy to manufacture.

[0130] In some embodiments, a second guide structure 3241 is provided at the side notch, so as to facilitate the portion of the transmission shaft 31 connected to the limiting protrusion 314 away from the sound output area 111 to slide into the avoidance groove 324 from the side notch of the avoidance groove 324 .

[0131] For example, the second guide structure 3241 includes a fourth chamfer connected between the inner wall of the avoidance groove 324 and the connecting annular surface 327 , thereby making the second guide structure 3241 easy to manufacture.

[0132] In some embodiments, the transmission member 32 further has a fifth chamfer 3242, which is connected between the inner wall of the avoidance groove 324, the mounting surface 326, and the connecting annular surface 327. Therefore, when the transmission shaft 31 is inserted through the mounting opening 325, the portion of the transmission shaft 31 protruding from the mounting surface 326 can be prevented from interfering with the connecting annular surface 327, making the transmission member 32 easy to install.

[0133] In some embodiments, a first annular groove 318 is provided on the circumferential side surface of one end of the transmission shaft 31 to form a limiting protrusion 314 at the one end of the transmission shaft 31 .

[0134] That is, a limiting protrusion 314 is formed on the side of the first annular groove 318 near the sound output area 111, and the bottom wall of the first annular groove 318 is installed in the avoidance groove 324. In addition, a second flat surface 317 can be formed on the bottom wall of the first annular groove 318.

[0135] In some embodiments, the connecting annular surface 327 is a cylindrical surface.

[0136] In some embodiments, the mounting surface 326 and the first support surface 321 are arranged at an angle relative to each other, such that the width of at least a portion of the circumferential area of the connecting annular surface 327 varies. The mounting opening 325 is located at the narrower portion of the connecting annular surface 327. Thus, by avoiding the need to provide mounting holes in the wider portion of the connecting annular surface 327, the structural strength of the transmission member 32 can be improved, thereby ensuring the stability and reliability of the connection between the transmission shaft 31 and the transmission member 32.

[0137] In some embodiments, the transmission shaft assembly 300 further includes a second fastener 33. The second fastener 33 passes through the transmission shaft 31 and the transmission member 32 to securely connect the transmission shaft 31 to the transmission member 32. Furthermore, the second fastener 33 can improve the stability and reliability of the connection between the transmission shaft 31 and the transmission member 32.

[0138] For example, a first hole 3271 is formed on the connecting annular surface 327 at a position corresponding to the avoidance groove 324. The second fastener 33 is passed through the first hole 3271 to connect with the transmission shaft 31. The second fastener 33 can also limit the transmission member 32 from rotating relative to the transmission shaft 31 about the first axis L1.

[0139] In some embodiments, the second fastener 33 extends radially along the transmission shaft 31 and passes through the transmission shaft 31 and the transmission member 32, respectively, to lock the transmission member 32 to the transmission shaft 31. The second fastener 33 can also restrict the transmission member 32 from rotating relative to the transmission shaft 31 about the first axis L1.

[0140] In some embodiments, the second fastener 33 is a latch. It is understood that, compared to a screw as the second fastener 33, a latch has the advantage of higher installation precision. Of course, in other embodiments, the second fastener 33 may also be a screw, rivet, etc., and this embodiment of the present application is not limited thereto.

[0141] In some embodiments, other methods can also be used to connect the drive shaft 31 and the transmission member 32. For example, an assembly hole can be set on the mounting surface 326 of the transmission member 32. The assembly hole can be optionally a non-circular hole. One end of the drive shaft 31 is inserted into the assembly hole, and the second fastener 33 is passed through the connecting ring surface 327 to connect and fix the drive shaft 31 to the transmission member 32.

[0142] Please continue to refer to Figure 9 In some embodiments, the skin care device further includes a dielectric housing 500, which is at least partially disposed within the housing 100. The dielectric housing 500, or the space between the dielectric housing 500 and the housing 100, forms a dielectric chamber 51. The transducer assembly 200 is disposed within the dielectric chamber 51, which is used to store an ultrasonic wave transmission medium. Thus, the ultrasonic wave transmission medium reduces the loss of ultrasonic waves generated by the transducer assembly 200 when they enter the skin to be treated, thereby improving the skin care effect.

[0143] It can be understood that, on the one hand, the shell 100 can form a part of the inner wall of the medium chamber 51, and the shell 100 may not form the inner wall of the medium chamber 51, and the embodiment of the present application does not limit this. On the other hand, the medium shell 500 and the shell 100 can be integrally formed or separately formed, and the embodiment of the present application does not limit this.

[0144] In some embodiments, a pressure regulating component 600a is provided in the medium chamber 51. The pressure regulating component 600a is used to regulate the pressure within the medium chamber 51. For example, if the ultrasonic wave transmission medium is a liquid, the ultrasonic transducer 21 will generate heat during operation, and the ultrasonic wave transmission medium will correspondingly expand and contract, thereby causing the pressure within the medium chamber 51 to change dynamically. In this case, the pressure regulating component 600a can adaptively adjust the pressure within the medium chamber 51 to prevent damage to the medium chamber 51 and / or the transducer assembly 200 and / or the sound-transmitting membrane in the sound output area 111 due to pressure. Furthermore, the movement of the transducer assembly 200 will also cause the pressure within the medium chamber 51 to change dynamically. In this case, the pressure regulating component 600a can adaptively adjust the pressure within the medium chamber 51.

[0145] The pressure regulating component 600a may include at least one of a pressure regulating valve and an elastic deformation component 600, which is not limited in this embodiment of the present application.

[0146] In some embodiments, the elastic deformable member 600 is at least partially disposed within the medium chamber 51. The elastic deformable member 600 defines a deformation cavity 61, which is at least partially located within the medium chamber 51. The deformation cavity 61 also has a communication opening 611 that communicates with the exterior of the medium chamber 51. Therefore, when the pressure within the medium chamber 51 increases, the elastic deformable member 600 may be compressed, causing the deformation cavity 61 to decrease in size, and air within the deformation cavity 61 to be discharged through the communication opening 611.

[0147] For example, please refer to Figure 9 and Figure 10 The elastic deformable component 600 may include a first top wall 62 and a second annular wall 63. The first top wall 62 is disposed within the medium chamber 51. The second annular wall 63 is at least partially disposed within the medium chamber 51 and surrounds the first top wall 62 to form a deformation cavity 61 between the first top wall 62 and the second annular wall 63. A communication opening 611 is located at an end of the deformation cavity 61 that is away from the first top wall 62.

[0148] It is understandable that during the operation of the skin care device, when the pressure in the medium chamber 51 is too high, the elastic deformation component 600 is prone to excessive deformation, causing the elastic deformation component 600 to turn outward outside the medium chamber 51, thereby causing the elastic deformation component 600 to fail.

[0149] Based on this, in some embodiments, the skin care device may further include a first stopper 64, which is at least partially disposed at the communication opening 611 to limit deformation of the elastic deformable component 600 away from the communication opening 611 from reaching the communication opening 611. This prevents the elastic deformable component 600 from everting outside the medium chamber 51, ultimately improving the reliability and stability of the elastic deformable component 600 and enhancing the pressure regulation effect of the elastic deformable component 600.

[0150] For example, the first stopper 64 can be used to limit the deformation of the first top wall 62 to the communication opening 611, thereby preventing the elastic deformable component 600 from everting outside the medium chamber 51. It should be noted that the first stopper 64 can be provided to cover the communication opening 611, or one end of the first stopper 64 can be located within the deformation cavity 61 to limit the deformation of the first top wall 62 to the communication opening 611. In other words, the elastic deformable component 600 can be inserted into the deformation cavity 61 or not, and this is not limited in this embodiment of the present application.

[0151] For example, the first stopper 64 is inserted into the communication opening 611, and a pressure relief hole 641 is formed between the first stopper 64 and / or the first stopper 64 and the second annular wall 63. The pressure relief hole 641 communicates with the deformation cavity 61. Thus, a separate component can be inserted into the communication opening 611 to form the first stopper 64, making the first stopper 64 easy to assemble and facilitating sealing of the medium chamber 51. Simultaneously, the deformation cavity 61 communicates with the outside via the pressure relief hole 641, facilitating deformation of the elastic deformable component 600.

[0152] In some embodiments, there are multiple pressure relief holes 641 , which are arranged at intervals around the circumference of the medium chamber 51 , thereby improving the pressure regulation effect in the deformation cavity 61 through the multiple pressure relief holes 641 .

[0153] In some embodiments, the shape of the first stopper 64 is adapted to the shape of the communication opening 611. For example, the first stopper 64 is arc-shaped and extends around the circumference of the dielectric chamber 51; accordingly, the elastic deformation component 600 as a whole also has an arc-shaped structure extending around the circumference of the dielectric chamber 51. This avoids the need for the first stopper 64 to be positioned in the middle of the dielectric chamber 51.

[0154] It should be noted that, because the elastic deformation component 600 as a whole also has an arc-shaped structure extending circumferentially around the medium chamber 51, on the one hand, the elastic deformation ability and support performance of the elastic deformation component 600 can be increased to prevent the elastic deformation component 600 from being easily deformed; on the other hand, it can also prevent the elastic deformation component 600 from not deforming.

[0155] It can also be understood that, as mentioned above, the transducer assembly 200 can be tilted, and the elastic deformation component 600 can be located on the outer peripheral side of the end of the transducer assembly 200 away from the sound output area 111, so that the end of the transducer assembly 200 away from the sound output area 111 can be tilted to reserve space for installing the elastic deformation component 600, so that the layout in the medium chamber 51 is more compact, which is conducive to the miniaturized design of the skin care device.

[0156] For example, please combine Figure 10 and Figure 26 The elastic deformation component 600 is located on the outer periphery of the transducer assembly 200. The second annular wall 63 includes a first side wall 631 facing the transducer assembly 200 and a second side wall 632 facing away from the transducer assembly 200. The first side wall 631 and the second side wall 632 are both arc-shaped and surround the outer periphery of the transducer assembly 200. The first side wall 631 is located outside the second side wall 632, and the width of the first side wall 631 is greater than the width of the second side wall 632.

[0157] The second annular wall 63 further includes two third side walls 633 disposed at both ends of the first side wall 631 and the second side wall 632 . The third side walls 633 connect the first side wall 631 and the second side wall 632 .

[0158] In some examples, the third side wall 633 is arranged in a flat plate shape, and a first edge is formed at the connection between the third side wall 633 and the first side wall 631, and a second edge is formed at the connection between the third side wall 633 and the second side wall 632. In this way, the edges can be used to further improve the supporting performance of the elastic deformation component 600.

[0159] In another example, the third side wall 633 may also be arc-shaped, and the third side wall 633 is smoothly connected to the first side wall 631 , and the third side wall 633 is smoothly connected to the second side wall 632 . In this way, the supporting performance of the elastic deformation component 600 may be further improved.

[0160] In some embodiments, a first rib 642 is provided at one end of the first position-limiting member 64 located outside the deformation cavity 61. The first rib 642 abuts against the end surface of the communication opening 611 to restrict movement of the first position-limiting member 64 toward insertion into the deformation cavity 61. Therefore, during actual installation, the first position-limiting member 64 can be inserted into the deformation cavity 61 from the end facing away from the first rib 642 until the first rib 642 abuts against the end surface of the communication opening 611. This makes the first position-limiting member 64 easy to install and highly accurate.

[0161] The first position-limiting member 64 can be bonded and fixed to the elastic deformation member 600. For example, the first retaining edge 642 can be bonded and fixed to the opening end surface of the communication opening 611. This improves the stability and reliability of the installation of the first position-limiting member 64.

[0162] In some embodiments, the end of the second annular wall 63 facing away from the first top wall 62 is located outside the medium chamber 51 and is provided with a second rib 65. The second rib 65 abuts the outer wall of the medium chamber 51 to limit the movement of the first stopper 64 toward the medium chamber 51. Therefore, during the actual installation process, the elastic deformable component 600 can be inserted into the deformation cavity 61 via the first top wall 62 until the second rib 65 abuts the outer wall of the medium chamber 51. This makes the elastic deformable component 600 easy to install and has high installation precision.

[0163] Correspondingly, the first rib 642 can abut against the second rib 65 , which can facilitate positioning during assembly and reduce assembly difficulty.

[0164] In some embodiments, the elastic deformable component 600 is bonded and fixed to the outer wall of the medium chamber 51. For example, an assembly hole suitable for the elastic deformable component 600 is formed in the wall of the medium chamber 51. The elastic deformable component 600 is at least partially installed in the medium chamber 51 through the assembly hole. After the elastic deformable component 600 and the first stopper 64 are installed, the first rib 642, the second rib 65, and the outer surface of the medium housing 500 are bonded and fixed by glue, thereby achieving a good sealing effect at the connection between the medium housing 500 and the elastic deformable component 600.

[0165] Optionally, the first stopper 64 is spaced apart from the inner wall of the deformable cavity 61. For example, the first stopper 64 can be part of some brackets (such as the second mounting bracket 41 described later) or other components inside the housing 100, thereby reducing the number of parts required for the skin care device.

[0166] In some embodiments, the ratio of the depth of the first limit member 64 inserted into the deformation cavity 61 to the depth of the deformation cavity 61 is less than or equal to 0.35, thereby avoiding the first limit member 64 being inserted too deeply into the deformation cavity 61, resulting in the deformation amount of the elastic deformation component 600 being too small, thereby avoiding insufficient pressure adjustment ability of the elastic deformation component 600.

[0167] For example, the ratio of the depth of the first limiter 64 inserted into the deformation cavity 61 to the depth of the deformation cavity 61 can be 0.35, 0.34, 0.321, 0.3, 0.27, 0.25, 0.2, 0.194, 0.19, 0.15, 0.1 or 0.5, etc., which is not limited to the embodiment of the present application.

[0168] In some embodiments, the thickness of the second annular wall 63 is less than the thickness of the first top wall 62. Therefore, when the pressure in the medium chamber 51 increases, the elastic deformable member 600 can be deformed first by the second annular wall 63, thereby preventing the first top wall 62 from deforming to the communication opening 611, thereby preventing the elastic deformable member 600 from everting outside the medium chamber 51. Ultimately, the reliability and stability of the elastic deformable member 600 can be improved, thereby enhancing the pressure regulation effect of the elastic deformable member 600.

[0169] For example, the thickness of the second annular wall 63 is 0.4 mm to 0.7 mm. For example, the thickness of the second annular wall 63 is 0.4 mm, 0.44 mm, 0.45 mm, 0.47 mm, 0.5 mm, 0.514 mm, 0.55 mm, 0.6 mm, 0.67 mm, or 0.7 mm, which is not limited in this embodiment of the present application. The thickness of the first top wall 62 is 0.7 mm to 1.1 mm. For example, the thickness of the first top wall 62 is 0.7 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.897 mm, 0.9 mm, 0.97 mm, 1 mm, 1.07 mm, or 1.1 mm, which is not limited in this embodiment of the present application. Thus, it is possible to avoid the first top wall 62 and the second annular wall 63 being too thick, which makes the elastic deformation component 600 difficult to deform, and to avoid the first top wall 62 and the second annular wall 63 being too thin, which makes the elastic deformation component 600 too easy to deform; it is also possible to ensure that the thickness of the second annular wall 63 is less than the thickness of the first annular wall 532.

[0170] In some embodiments, the first top wall 62 is a flat plate structure, which can improve the strength of the first top wall 62 compared to a first top wall 62 having a corrugated plate structure, thereby reducing the probability of the elastic deformation component 600 everting outside the medium chamber 51.

[0171] In some embodiments, at least one of the second annular wall 63 and the first top wall 62 has a smooth surface. This can also be understood as the surface of at least one of the second annular wall 63 and the first top wall 62 being wrinkle-free. This can improve the strength of the corresponding second annular wall 63 and / or first top wall 62 to a certain extent, thereby slowing the deformation of the elastically deformable component 600 and preventing violent oscillations in the ultrasonic wave-conducting medium within the medium chamber 51, thereby improving the stability and reliability of the skin care device.

[0172] In some embodiments, the Shore hardness coefficient of the elastic deformation member 600 is 40-60 HR. This can improve the strength of the elastic deformation member 600 to a certain extent, thereby making the deformation speed of the elastic deformation member 600 slower, thereby preventing the ultrasonic wave conductive medium in the medium chamber 51 from vigorous oscillation, thereby improving the stability and reliability of the skin care device.

[0173] For example, the Shore hardness coefficient of the elastic deformation component 600 is 40HR, 42.5HR, 45HR, 47HR, 49.7HR, 50HR, 52HR, 55HR, 57.8HR, 59HR or 60HR, which is not limited in the embodiments of the present application.

[0174] In some embodiments, the elastic deformable component 600 is a rubber component or a silicone component. Of course, the elastic deformable component 600 can also be made of any other deformable material, which is not limited in the embodiments of the present application.

[0175] It is also understood that, as mentioned above, the transmission shaft assembly 300 may include a transmission shaft 31 passing through the dielectric housing 500. The transmission shaft 31 may move along the first axis L1 to drive the transducer assembly 200 to move along the first axis L1, thereby approaching or moving away from the sound output area 111.

[0176] For example, the transmission shaft assembly 300 includes a transmission member 32 and a transmission shaft 31. One end of the transmission shaft 31 extends into the medium chamber 51, and the transmission member 32 is mounted on the end of the transmission shaft 31 extending into the medium chamber 51. A first support surface 321 is provided on the side of the transmission member 32 away from the transmission shaft 31. The transducer assembly 200 is mounted on the first support surface 321.

[0177] Then, when the depth of the transmission shaft 31 inserted into the medium housing 500 changes, the pressure in the medium chamber 51 also changes accordingly. At this time, the pressure adjustment component 600a (or the elastic deformation component 600) can effectively adjust the pressure in the medium chamber 51.

[0178] Exemplarily, the skin care device is configured to have at least two preset depth modes, in which the depths of the drive shaft assembly 300 inserted into the medium chamber 51 are different, so that the volumes of the portion of the drive shaft assembly 300 inserted into the medium chamber 51 are different.

[0179] In all depth modes, the difference between the maximum and minimum volumes of the transmission shaft assembly 300 inserted into the medium chamber 51 is V1, and the volume of the deformation cavity 61 is V2. V2 is greater than or equal to V1 to ensure that the elastic deformation component 600 has a sufficiently large deformation cavity 61.

[0180] In some embodiments, the ratio of V1 to V2 may be 3-10, thereby ensuring that the elastic deformation member 600 has a sufficiently large deformation cavity 61. For example, the ratio of V1 to V2 may be 3, 3.4, 3.5, 4, 4.1, 4.97, 5.5, 5.9, 6, 6.12, 6.3, 6.4, 6.5, 7, 7.9, 8.5, 9, or 10.

[0181] In some embodiments, the ratio of V1 to V2 is 5.5-6.5. This can prevent the deformation cavity 61 from being too small, which would result in the transmission shaft 31 being inserted into the medium chamber 51 to its maximum depth and the elastic deformation component 600 from having insufficient space to be compressed when the ultrasonic conductive medium expands due to heat. It can also prevent the deformation cavity 61 from being too large, which would occupy too much space in the medium chamber 51 and result in insufficient support performance.

[0182] In some embodiments, the skin care device further includes a second mounting bracket 41 , and one end of the transmission shaft assembly 300 located outside the medium chamber 51 is mounted on the second mounting bracket 41 .

[0183] In some embodiments, the first limiter 64 may be provided on the second mounting bracket 41 , so that the second mounting bracket 41 may be reused to form the first limiter 64 , thereby reducing the number of parts of the skin care device and facilitating assembly of the skin care device.

[0184] like Figure 9 As shown, in some embodiments, a window 521 is provided on the wall of the medium chamber 51, located at the sound output region 111. The skin care device further includes an acoustically transparent membrane 54 covering the window 521 to seal the window 521. The ultrasonic focus of the transducer assembly 200 passes through the window 521 to be emitted into the skin to be treated. Thus, by regulating the pressure within the medium chamber 51 via the pressure regulating component 600a, rupture of the acoustically transparent membrane 54 can be avoided.

[0185] In some embodiments, the sound-transmitting membrane 54 is only fixed to the open end surface of the window 521 , resulting in low installation reliability of the sound-transmitting membrane 54 , thereby affecting the sealing effect of the medium chamber 51 .

[0186] Please refer to Figure 9 and Figure 11 Based on this, in some embodiments, the sidewalls (i.e., cavity walls) forming the medium chamber 51 include a second top wall 522 and a third annular wall 523 disposed around the second top wall 522. The second top wall 522 is located on the side of the transducer assembly 200 facing the sound output region 111. The second top wall 522 is provided with a window 521, which is a through hole facing the transducer assembly 200. The acoustically transparent membrane 54 includes a sealing portion 541 and a plurality of fixing portions 542. The sealing portion 541 is fixed to the second top wall 522 to close the window 521. The plurality of fixing portions 542 are arranged along the circumference of the sealing portion 541. Each fixing portion 542 is bent and connected to the outer edge of the sealing portion 541 and fixed to the third annular wall 523.

[0187] Therefore, the acoustically permeable membrane 54 forms a seal with the second top wall 522 via the sealing portion 541, and the multiple fixing portions 542 increase the connection area of the acoustically permeable membrane 54, thereby increasing the connection area of the acoustically permeable membrane 54 and improving the sealing effect of the acoustically permeable membrane 54. Furthermore, in actual manufacturing, multiple sheet-like structures can be cut from the periphery of the sealing portion 541 and then bent to form the fixing portions 542, thereby making the acoustically permeable membrane 54 easier to manufacture. Thus, the acoustically permeable membrane 54 of the embodiment of the present application can improve the sealing effect at the window 521 of the medium chamber 51 while meeting the practical requirements of easy manufacture.

[0188] In some embodiments, at least one fixing portion 542 is overlapped with an adjacent fixing portion 542 along one end edge of the circumferential direction of the third annular wall 523. Thus, as much as possible, all circumferential portions of the third annular wall 523 are connected and fixed to the fixing portion 542, thereby improving the stability and reliability of the connection.

[0189] In some embodiments, the fixing portion 542 and the third annular wall 523 are connected and fixed by at least one of bonding, hot pressing, ultrasonic welding and welding; and / or, the sealing portion 541 and the second top wall 522 are connected and fixed by at least one of bonding, hot pressing, ultrasonic welding and welding.

[0190] In some embodiments, the second top wall 522 and the sealing portion 541 are both circular, the outer diameter of the second top wall 522 is smaller than the outer diameter of the sealing portion 541 ; and / or the outer edge of the sealing portion 541 protrudes from the outer peripheral side of the second top wall 522 .

[0191] Thus, the stability of the connection between the second top wall 522 and the sealing portion 541 can be improved. It can also be understood that when the second top wall 522 and the sealing portion 541 are bonded, a glue overflow groove can be formed between the portion of the sealing portion 541 protruding from the outside of the second top wall 522 and the third annular wall 523 to accommodate excess glue squeezed out between the second top wall 522 and the sealing portion 541, thereby allowing the sealing portion 541 to be bonded to the second top wall 522 more smoothly, thereby improving the stability and reliability of the bonding.

[0192] For example, the difference between the outer diameter of the second top wall 522 and the outer diameter of the sealing portion 541 may be 1 mm to 2 mm.

[0193] In some embodiments, the sealing portion 541 is located on the side of the second top wall 522 away from the medium chamber 51, and an ink layer 543 is provided on the side of the sealing portion 541 facing the second top wall 522. The ink layer 543 is arranged around the window 521, so that a better decorative effect can be achieved through the ink layer 543.

[0194] In some embodiments, the inner diameter of the inner peripheral edge of the ink layer 543 is smaller than the inner diameter of the window 521; and / or the inner peripheral edge of the ink layer 543 protrudes from the inner peripheral side of the inner wall of the window 521. Thus, the ink layer 543 can effectively shield the outer edge of the inner wall of the window 521, thereby improving the aesthetics of the skin care device.

[0195] In some embodiments, the sealing level between the sound-transmitting membrane 54 and the second top wall 522 is IP68, thereby making the sealing at the sound-transmitting membrane 54 more reliable.

[0196] In some embodiments, the sound outlet region 111 includes a first sound outlet hole 1111. The dielectric housing 500 is formed with a second top wall 522 and a third annular wall 523. The second top wall 522 is disposed within the first sound outlet hole 1111. The fixing portion 542 is fixed between the hole wall of the first sound outlet hole 1111 and the third annular wall 523. Thus, the fixing portion 542 can be clamped by the hole wall of the first sound outlet hole 1111 and the third annular wall 523, thereby improving the stability of the connection of the fixing portion 542.

[0197] In some embodiments, there is sealant between the third annular wall 523 and the inner wall of the housing 100 , which can improve the sealing effect between the third annular wall 523 and the inner wall of the housing 100 and improve the stability of the connection of the fixing portion 542 .

[0198] In some embodiments, the medium housing 500 includes a first housing 52 and a second housing 53. The first housing 52 and the second housing 53 enclose and form the medium chamber 51, so that the formation of the medium chamber 51 is more convenient.

[0199] Illustratively, the first housing 52 has a second top wall 522 and a third annular wall 523 . The second housing 53 is connected to the third annular wall 523 to form a medium chamber 51 between the second top wall 522 , the third annular wall 523 and the second housing 53 .

[0200] It can also be understood that, when the driving assembly 400 drives the transducer assembly 200 to move, the ultrasonic transducer 21 is prone to collision during its movement.

[0201] Please refer to Figure 9 and Figure 12 Based on this, in some embodiments, the side wall (i.e., the cavity wall) forming the medium chamber 51 is also provided with a window 521 located at the sound output area 111. The window 521 is a through hole facing the transducer assembly 200, and a first chamfer 5211 is provided on the inner side wall of the window 521 at one end close to the transducer assembly 200.

[0202] It is understandable that in order to facilitate the ultrasonic waves of the transducer assembly 200 to be emitted into the skin to be treated and to reduce losses, the transducer assembly 200 is usually arranged near the window 521; therefore, a first chamfer 5211 is provided on the inner wall of the window 521. On the one hand, it can avoid the collision between the transducer assembly 200 and the inner wall of the window 521 during the movement, and on the other hand, it can also be conducive to miniaturization design.

[0203] In some embodiments, the transducer assembly 200 includes an ultrasonic transducer 21 facing the window 521, and a second chamfer 212 is provided on one end of the circumferential surface of the ultrasonic transducer 21 near the window 521. This can reduce the probability of collision between the end of the circumferential surface of the ultrasonic transducer 21 near the window 521 and the window 521.

[0204] In some embodiments, along the central axis of window 521, the orthographic projection of second chamfer 212 lies at least partially within the orthographic projection of first chamfer 5211. Therefore, the focused ultrasound generated by ultrasonic transducer 21 can be emitted as completely as possible from window 521, thereby enhancing the skin care effect. Accordingly, first chamfer 5211 and second chamfer 212 are more desirable to reduce the probability of collision between transducer assembly 200 and window 521 during movement.

[0205] It should be noted that the central axis of the window 521 may coincide with, intersect with, or be parallel to the first axis L1, and this embodiment of the present application does not limit this.

[0206] In some embodiments, the first chamfer 5211 is a straight chamfer to form a first chamfered surface, and the angle between the first chamfered surface and the central axis of the window 521 is 10 to 40 degrees, thereby reducing the probability of the transducer assembly 200 colliding with the window 521 during movement. For example, the angle between the first chamfered surface and the central axis of the window 521 is 10 degrees, 15 degrees, 15 degrees, 20 degrees, 27 degrees, 30 degrees, 32.7 degrees, 35 degrees, or 40 degrees, which is not limited in the embodiments of the present application.

[0207] In some embodiments, the second chamfer 212 is a straight chamfer to form a second chamfered surface, and the angle between the second chamfered surface and the central axis of the transducer assembly 200 is 10 to 40 degrees, thereby reducing the probability of the transducer assembly 200 colliding with the window 521 during movement. For example, the angle between the second chamfered surface and the central axis of the transducer assembly 200 is 10 degrees, 15 degrees, 15 degrees, 20 degrees, 27 degrees, 30 degrees, 32.7 degrees, 35 degrees, or 40 degrees, which is not limited in the embodiments of the present application.

[0208] In some embodiments, the housing 100 includes an abutment section 112 and a transition section 113, the abutment section 112 is connected to one end of the transition section 113 along the length direction of the housing 100, the abutment section 112 is columnar, and a working area 111a is provided on the end surface of the abutment section 112 facing away from the transition section 113, and the transition section 113 is conical; along the direction approaching the abutment section 112, the cross-sectional area of the transition section 113 is reduced.

[0209] Thus, by gradually tapering the transition section 113, the cross-sectional area of the abutting end can be made smaller, so that the working area 111a on the abutting section 112 can be more accurately fitted to the skin to be treated; at the same time, since the transition section 113 is conical, the transition section 113 obstructs the user's line of sight less.

[0210] In some embodiments, the length of the abutment section 112 along the length of the housing 100 is 5 to 15 mm. For example, the length of the abutment section 112 along the length of the housing 100 is 5 mm, 5.5 mm, 6.5 mm, 7 mm, 8.9 mm, 9.44 mm, 10 mm, 11 mm, 12.3 mm, 13 mm, 14.55 mm, or 15 mm, although this is not a limitation in the present embodiment. This prevents the abutment section 112 from being too long, which could result in the housing end where the abutment section 112 is located being too small to accommodate the skin care component 200a, the transmission shaft assembly 300, the drive assembly 400, and the like.

[0211] In some embodiments, the length of the transition section 113 along the length of the housing 100 is 5 to 15 mm. For example, the length of the transition section 113 along the length of the housing 100 is 5 mm, 5.5 mm, 6.5 mm, 7 mm, 8.9 mm, 9.44 mm, 10 mm, 11 mm, 12.3 mm, 13 mm, 14.55 mm, or 15 mm, although this is not limited in the present embodiment. This prevents the transition section 113 from being too long, which would result in the interior space at the end of the housing where the transition section 113 is located being too small, making it impossible to install the skin care component 200a, the transmission shaft assembly 300, and the drive assembly 400.

[0212] In some embodiments, along the length direction of the housing 100 , the ratio of the length of the abutting section 112 to the length of the transition section 113 is 0.85-1.15, that is, the length of the abutting section 112 and the length of the transition section 113 may be substantially the same.

[0213] In some embodiments, the dielectric chamber 51 is partially located inside the abutting section 112 and the transition section 113, and the transducer assembly 200 is partially located inside the abutting section 112 and the transition section 113. Therefore, the space near the window 521 of the dielectric chamber 51 is smaller, and the first chamfer 5211 and the second chamfer 212 are more necessary to reduce the probability of the transducer assembly 200 colliding with the window 521 during movement.

[0214] In some embodiments, the drive assembly 400 includes at least one of a first drive assembly and a second drive assembly. The first drive assembly is in driving connection with the transducer assembly 200 to drive the transducer assembly 200 to move along the first axis L1. The second drive assembly is in driving connection with the transducer assembly 200 to drive the ultrasonic focus of the transducer assembly 200 to rotate about the first axis L1. The first axis L1 is the central axis of the window 521. Thus, by providing the first chamfer 5211 and the second chamfer 212, it is possible to prevent the transducer assembly 200 from colliding with the inner wall of the window 521 when the first drive assembly and / or the second drive assembly drive the transducer assembly 200 to move.

[0215] In some embodiments, the window 521 may be formed in the dielectric housing 500. For example, the sound output region 111 includes a first sound output hole 1111 provided in the housing 100, the dielectric housing 500 extends through the first sound output hole 1111, and a window 521 is provided on one side of the dielectric housing 500 located within the sound output region 111. The dielectric housing 500 also includes a sound-transmitting membrane 54, which covers the window 521 to seal the window 521. Of course, in some embodiments, the housing 100 may also be formed with a window 521, and this embodiment of the present application is not limited thereto.

[0216] As mentioned above, in some embodiments, the medium housing 500 may include a first housing 52 and a second housing 53. However, liquid leakage may easily occur between the first housing 52 and the second housing 53.

[0217] Based on this, in some embodiments, the media housing 500 further includes a first sealing ring 55. The first housing 52 is provided with a first sealing groove 524. The second housing 53 includes a second bottom wall 531 and a first annular wall 532 surrounding the second bottom wall 531. The end edge of the first annular wall 532, facing away from the second bottom wall 531, is inserted into the first sealing groove 524, thereby forming the media chamber 51 between the second bottom wall 531, the first annular wall 532, and the first housing 52. The first sealing ring 55 is sandwiched between the inner wall of the first sealing groove 524 and the first annular wall 532. The first sealing ring 55 extends at least from the inner circumference of the first annular wall 532 to the outer circumference of the first annular wall 532, thereby sealing the connection between the first housing 52 and the second housing 53.

[0218] Then, since the first sealing ring 55 extends at least from the inner circumference of the first annular wall 532 to the outer circumference of the first annular wall 532 , the contact area between the first sealing ring 55 and the first annular wall 532 can be increased, thereby improving the sealing effect.

[0219] In some embodiments, the depth of the first annular wall 532 inserted into the first sealing groove 524 is greater than the thickness of the portion of the first annular wall 532 inserted into the first sealing groove 524, so that the depth of the first annular wall 532 inserted into the first sealing groove 524 is greater, so as to increase the sealing area of the first sealing ring 55.

[0220] For example, the dimension of the first sealing ring 55 in the depth direction of the first sealing groove 524 is greater than the thickness of the portion of the first ring wall 532 inserted into the first sealing groove 524, thereby increasing the sealing area of the first sealing ring 55 and improving the sealing effect of the first sealing ring 55.

[0221] In some embodiments, the first annular wall 532 includes a first sub-annular wall 5321 and a second sub-annular wall 5322. The first sub-annular wall 5321 is inserted into the first sealing groove 524, and the second sub-annular wall 5322 is connected between the first sub-annular wall 5321 and the second bottom wall 531. The thickness of the first sub-annular wall 5321 is less than that of the second sub-annular wall 5322. Thus, the structural strength of the second sub-annular wall 5322 can be improved.

[0222] Please combine Figure 9 、 Figure 12 and Figure 13 In some embodiments, the outer circumferential surface of the second sub-annular wall 5322 is provided with a first engaging protrusion 525, and the first housing 52 is provided with a first latch 533. The first engaging protrusion 525 is provided with a first latch hole, and the first latch 533 is engaged with the first latch hole. Thus, the first latch 533 can increase the connection stability between the first housing 52 and the second housing 53, thereby improving the sealing effect.

[0223] There can be multiple first buckles 533, which are spaced apart along the circumference of the second sub-annular wall 5322. Thus, the multiple first buckles 533 can improve the connection stability of the connection between the first shell 52 and the second shell 53, thereby improving the sealing effect.

[0224] In some embodiments, a threaded portion 534 is provided on the outer circumference of the second sub-annular wall 5322. The threaded portion 534 is fixedly connected to the inner wall of the housing 100, thereby making the installation of the dielectric housing 500 more stable and reliable.

[0225] There may be multiple screw connection parts 534 , which are spaced apart along the circumference of the second sub-annular wall 5322 , thereby making the installation of the dielectric housing 500 more stable and reliable.

[0226] In some embodiments, the sound outlet region 111 includes a first sound outlet hole 1111 , the first shell 52 is at least partially located in the sound outlet region 111 , and the second bottom wall 531 of the second shell 53 is located on a side of the transducer assembly 200 facing away from the sound outlet region 111 .

[0227] For example, as mentioned above, the first housing 52 may include a second top wall 522 and a third annular wall 523. The first housing 52 may also include a mounting portion 526, which is protruding from the outer circumference of the end of the third annular wall 523 facing away from the second top wall 522. A first sealing groove 524 is provided on the side of the mounting portion 526 facing away from the sound output region 111.

[0228] In some embodiments, a first positioning groove 5261 is provided on a side of the mounting portion 526 facing the sound output region 111, and a first positioning protrusion 114 is provided on the inner wall of the housing 100. The first positioning protrusion 114 is engaged with the first positioning groove 5261. Thus, the first positioning protrusion 114 and the first positioning groove 5261 can achieve rapid positioning of the dielectric housing 500 and the housing 100, and can improve the stability and reliability of the connection between the dielectric housing 500 and the housing 100.

[0229] Illustratively, at least two groups of positioning ribs 5262 are protruding from a surface of the mounting portion 526 facing the sound output area 111 , and each group of positioning ribs 5262 includes two positioning ribs 5262 spaced apart to define a first positioning groove 5261 .

[0230] In some embodiments, at least two sets of positioning ribs 5262 are spaced apart along the circumference of the third annular wall 523, so that a wiring space 5263 is formed between two adjacent sets of positioning ribs 5262. The fifth circuit board, which will be described later, can then be routed through the wiring space 5263.

[0231] In some embodiments, the third annular wall 523 may include a third sub-annular wall 5231 and a fourth sub-annular wall 5232. The third sub-annular wall 5231 is connected to the second top wall 522. The third sub-annular wall 5231 is cylindrical and at least partially located inside the abutment section 112. The fourth sub-annular wall 5232 is connected to the end of the third sub-annular wall 5231 facing away from the second top wall 522 and has a tapered shape. The cross-sectional area of the fourth sub-annular wall 5232 decreases as it approaches the third sub-annular wall 5231. The fourth sub-annular wall 5232 is located inside the transition section 113. This allows the shape of the dielectric housing 500 to adapt to the abutment section 112 and transition section 113, fully utilizing the space inside the abutment section 112 and transition section 113 to provide a larger dielectric chamber 51.

[0232] In some embodiments, a first positioning groove 5261 is provided on the side of the mounting portion 526 facing the sound output area 111 , and a first positioning protrusion 114 is provided on the inner wall of the transition section 113 . The first positioning protrusion 114 is snapped into the first positioning groove 5261 .

[0233] In some embodiments, the inner wall of the medium chamber 51 is further provided with an injection hole connected to the outside, and a sealing plug is provided in the injection hole. Therefore, when the ultrasonic transmission medium is injected into the medium chamber 51, the pressure in the medium chamber 51 can also be adjusted by the pressure regulating component 600a.

[0234] Optionally, the injection hole can be provided on the annular sidewall of the medium chamber 51; this can reduce the risk of collision with the sealing plug during assembly. Furthermore, a protective ring protrusion is provided on the annular sidewall surrounding the injection hole, and the sealing plug is provided inside the protective ring protrusion. This protective ring protrusion can protect the sealing plug and prevent it from accidentally falling off.

[0235] Furthermore, the injection hole is provided at one end of the annular sidewall near the bottom wall of the medium chamber 51, thereby preventing excessive bubbles from being generated during injection. Specifically, in the above embodiment, the annular sidewall of the medium chamber 51 includes a first annular wall 532 and a third annular wall 523, and the bottom wall of the medium chamber 51 is the second bottom wall 531; the injection hole can be provided at one end of the first annular wall 532 near the second bottom wall 531.

[0236] As mentioned above, in some embodiments, the skin care device further includes a first electrical connection line 23, one end of which is connected to the first electrical connection terminal 211. The other end of the first electrical connection line 23 is then passed through the inner wall (i.e., cavity wall) of the dielectric chamber 51 (e.g., the dielectric housing 500). This allows the skin care device to power the transducer assembly 200 from outside the dielectric chamber 51.

[0237] In some embodiments, the media housing 500 further defines a second mounting hole 535, into which the drive shaft 31 of the drive shaft assembly 300 is movably and sealably mounted. For example, the drive shaft assembly 300 includes the drive shaft 31 and a second seal 34. The drive shaft 31 is movably and sealably mounted in the second mounting hole 535 via the second seal 34, such that one end of the drive shaft 31 extends into the media chamber 51. This prevents fluid leakage from the second mounting hole 535.

[0238] Accordingly, the transducer assembly 200 is mounted on one end of the transmission shaft 31 within the medium chamber 51. Consequently, when the transmission shaft 31 moves for a long period of time to drive the transducer assembly 200, the second seal 34 is susceptible to wear, resulting in a gap between the second seal 34 and the circumferential surface of the transmission shaft 31.

[0239] Based on this, in some embodiments, the second seal 34 is sealingly disposed between the inner wall of the second mounting hole 535 and the circumferential surface of the transmission shaft 31. The second seal 34 includes an inner ring seal portion 341 disposed around the transmission shaft 31. The inner ring seal portion 341 is elastic so as to closely adhere to the circumferential surface of the transmission shaft 31, and / or the second seal 34 further includes an elastic member 342 for driving the inner ring seal portion 341 to closely adhere to the circumferential surface of the transmission shaft 31.

[0240] Therefore, even if the inner ring sealing part 341 is worn after the transmission shaft assembly 300 has been working for a long time, the elastic part 342 or the elasticity of the inner ring sealing part 341 itself can still make the inner ring sealing part 341 fit tightly to the peripheral surface of the transmission shaft assembly 300, thereby improving the situation where the transmission shaft 31 is prone to liquid leakage.

[0241] When the second sealing member 34 includes an elastic member 342, the elastic member 342 can be sleeved on the outer peripheral side of the inner ring sealing portion 341, so that the elastic member 342 can apply a force to each circumferential position of the inner ring sealing portion 341, so that each circumferential position of the inner ring sealing portion 341 is tightly fitted to the circumferential side surface of the transmission shaft 31.

[0242] For example, the elastic member 342 may be an annular spring or an annular telescopic member (such as an annular telescopic rope or an annular telescopic tube, etc.).

[0243] In some embodiments, the second sealing member 34 further includes an outer ring sealing portion 343 and a first bottom wall 344. The outer ring sealing portion 343 abuts against the wall of the second mounting hole 535. The first bottom wall 344 is annular, with the inner edge of the first bottom wall 344 connected to the inner ring sealing portion 341, and the outer edge of the first bottom wall 344 connected to the outer ring sealing portion 343. Thus, the inner ring sealing portion 341, the first bottom wall 344, and the outer ring sealing portion 343 seal the gap between the wall of the second mounting hole 535 and the circumferential surface of the transmission shaft 31.

[0244] In some embodiments, the outer ring sealing portion 343 is installed in the second mounting hole 535 by interference fit, thereby improving the sealing effect at the second mounting hole 535.

[0245] In some embodiments, the outer ring sealing portion 343 includes a hard support ring and an outer sealing portion arranged outside the hard support ring, and the outer sealing portion is connected to the first bottom wall 344, thereby increasing the strength of the outer ring sealing portion 343 to improve the sealing effect at the second mounting hole 535.

[0246] The hard support ring can be made of metal or any other material with a harderness greater than that of the outer sealing portion, which is not limited in the present embodiment. The outer sealing portion can be made of rubber or silicone material with better sealing properties.

[0247] In some embodiments, a mounting groove is formed between the inner ring sealing portion 341, the first bottom wall 344, and the outer ring sealing portion 343. The elastic member 342 can be accommodated in the mounting groove.

[0248] In some embodiments, the first bottom wall 344 is connected to the end of the inner ring sealing portion 341 facing away from the medium chamber 51 and the end of the outer ring sealing portion 343 facing away from the medium chamber 51. This prevents the elastic member 342 from being disengaged from the mounting groove through the end of the second mounting hole 535 facing away from the medium chamber 51, thereby improving the stability and reliability of the installation of the elastic member 342.

[0249] In some embodiments, the second mounting hole 535 is a stepped hole, and the inner wall of the second mounting hole 535 includes a stepped surface 5351 facing the outside of the medium chamber 51, and the notch of the mounting slot faces the stepped surface 5351. The stepped surface 5351 can prevent the elastic member 342 from falling into the medium chamber 51.

[0250] For example, a surface protrusion 5352 is provided on the side of the medium housing 500 facing away from the medium chamber 51. The second mounting hole 535 is provided through the surface protrusion 5352, thereby forming a stepped hole. For example, the surface protrusion 5352 can be an annular protrusion provided around the transmission shaft 31.

[0251] In some embodiments, the skin care device further comprises a second mounting bracket 41 located outside the medium chamber 51 , and the driving assembly 400 is mounted on the second mounting bracket 41 .

[0252] In some examples, the second mounting bracket 41 can be connected to the housing 100 and / or the dielectric housing 500 .

[0253] In some embodiments, a third mounting hole 411 is defined on the second mounting bracket 41 , and the transmission shaft 31 passes through the third mounting hole 411 and is loosely fitted with the third mounting hole 411 .

[0254] The second mounting bracket 41 also covers the opening of the second mounting hole 535 facing away from the medium chamber 51 to prevent the second sealing member 34 from disengaging from the second mounting hole 535 in a direction away from the medium chamber 51. Thus, the cooperation between the stepped surface 5351 and the second mounting bracket 41 prevents the second sealing member 34 from disengaging from the second mounting hole 535. Furthermore, reusing the second mounting bracket 41 to limit the position of the second sealing member 34 can reduce material usage and assembly steps.

[0255] Exemplarily, the second mounting bracket 41 is provided with a second annular protrusion 412 facing the side of the second sealing member 34 away from the medium chamber 51 to restrict the second sealing member 34 from escaping from the second mounting hole 535 in a direction away from the medium chamber 51 .

[0256] In some embodiments, lubricating oil is further provided in the second mounting hole 535 to form an oil seal, thereby improving the sealing effect at the second mounting hole 535 .

[0257] For example, the lubricating oil may be at least partially disposed in the mounting groove. It is also understandable that the elastic member 342 may not be disposed in the mounting groove, and this embodiment of the present application does not limit this.

[0258] In some embodiments, the drive assembly 400 can be disposed outside the medium chamber 51. The drive assembly 400 can include at least one of a first drive assembly 42 and a second drive assembly 43. The first drive assembly 42 is in driving connection with the transmission shaft 31 to drive the transmission shaft 31 to move along the first axis L1. The second drive assembly 43 is in driving connection with the transmission shaft 31 to drive the transmission shaft 31 to rotate about the first axis L1. Thus, automatic adjustment achieved by the corresponding first drive assembly 42 and / or second drive assembly 43 can improve the movement accuracy of the transmission shaft assembly 300, thereby enhancing the skin care effect.

[0259] It should be noted that the skin care device can also be provided without the dielectric housing 500. Specifically, the transmission shaft assembly 300 includes a transmission shaft 31 movably disposed within the housing 100, extending along the first axis L1, and the drive assembly 400 includes a first drive assembly 42 and a second drive assembly 43. In this case, the skin care device can be provided with or without the dielectric housing 500, and this is not limited in this embodiment of the present application.

[0260] Please continue to refer to Figure 14In the first positional relationship between the first drive assembly 42 and the second drive assembly 43, the first drive assembly 42 is located between the second drive assembly 43 and the transducer assembly 200. Therefore, compared to arranging the first drive assembly 42 and the second drive assembly 43 in the same area along the first axis L1 of the transmission shaft 31, the embodiment of the present application arranges the first drive assembly 42 and the second drive assembly 43 at different positions along the first axis L1 of the transmission shaft 31. This allows the skin care device to be made thinner at various locations along the first axis L1, thereby allowing the housing 100 to be made thinner for easier gripping. In other words, since the first drive assembly 42 and the second drive assembly 43 are both located on the same side of the transducer assembly 200, the skin care device can also be made thinner at various locations along the axial direction of the transmission shaft 31, thereby achieving a miniaturized design. In addition, the first drive assembly 42 being located between the second drive assembly 43 and the transducer assembly 200 can also improve the stability and reliability of the installation of the first drive assembly 42 and the second drive assembly 43.

[0261] Illustratively, a drive position 315 is provided on a circumferential side surface of the transmission shaft 31. The drive position 315 is located between the dielectric housing 500 and the second drive assembly 43. For example, the drive position 315 is located in the middle of the transmission shaft 31. The first drive assembly 42 forms a transmission connection with the transmission shaft 31 at the drive position 315, so that the first drive assembly 42 can drive the transmission shaft 31 to move along the first axis L1 and allows the first drive assembly 42 to allow the transmission shaft 31 to rotate about the first axis L1.

[0262] For example, the first drive component 42 includes a pushing member 421, and the pushing member 421 and the driving position 315 are engaged with each other in a detachable manner through magnetic connection, negative pressure adsorption, clutch assembly, etc., so that the pushing member 421 can move along the first axis L1 to push the transmission shaft 31 to move along the first axis L1, and the transmission shaft 31 can also rotate around the first axis L1 relative to the pushing member 421.

[0263] Of course, the pusher 421 can also cooperate with the drive position 315 in other ways, such as Figure 15 Optionally, the driving position 315 includes an annular transmission groove provided on the outer peripheral side of the transmission shaft 31. The pusher 421 is partially rotatably clamped in the transmission groove relative to the transmission shaft 31 to form a transmission connection. Therefore, since the pusher 421 is partially clamped in the transmission groove, the pusher 421 can push the groove wall of the transmission groove when moving along the first axis L1, so that the transmission shaft 31 moves along the first axis L1; at the same time, since the pusher 421 is rotatably provided relative to the transmission shaft 31, the transmission shaft 31 can also rotate around the first axis L1, so that the pusher 421 is clamped at different positions on the circumference of the transmission groove, thereby avoiding interference between the pusher and the rotation of the transmission shaft 31.

[0264] In some embodiments, the first driving assembly 42 further includes a first motor 422 , and the first motor 422 is configured to drive the transmission shaft 31 to move along an axial direction (ie, the direction of the first axis L1 ) via a pushing member 421 .

[0265] For example, the pusher 421 includes a pusher connection portion 4211 and two pusher arms 4212. One end of the pusher connection portion 4211 is drivingly connected to the output shaft of the first motor 422, and the two pusher arms 4212 are connected to the other end of the pusher connection portion 4211. The two pusher arms 4212 are respectively disposed on opposite sides of the transmission shaft 31 and are respectively engaged in the transmission grooves. Thus, the two pusher arms 4212 cooperate with the transmission grooves to improve the stability and reliability of the connection between the pusher 421 and the transmission shaft 31.

[0266] In some embodiments, the first drive assembly 42 further includes a screw module 423, which includes a screw 4231 and a screw nut 4232 screwed to the screw 4231. The screw nut 4232 is connected to the push connection portion 4211, and the screw 4231 is drivingly connected to the output shaft of the first motor 422. Thus, the screw module 423 can improve the precision of the movement of the pusher 421 driven by the first motor 422.

[0267] It should be noted that the screw nut 4232 and the pushing connection part 4211 can be integrally formed or separately formed, and this embodiment of the application does not limit this.

[0268] In some embodiments, the first drive assembly 42 further includes a gear reduction module 424, and the output shaft of the first motor 422 is connected to the lead screw 4231 via the gear reduction module 424. Thus, due to the addition of the gear reduction module 424 and the lead screw module 423 to the transmission chain between the first motor 422 and the transmission shaft 31, the precision of the movement of the transmission shaft 31 driven by the first motor 422 can be improved twice, thereby improving the adjustment precision of the transducer assembly 200.

[0269] As mentioned above, the skin care device also includes a second mounting bracket 41 located outside the medium chamber 51. The screw module 423 can be mounted and fixed to the second mounting bracket 41, the gear reduction module 424 can be mounted and fixed to the screw module 423, and the first motor 422 can be mounted and fixed to the gear reduction module 424. Therefore, during actual assembly, the first motor 422, screw module 423, and gear detection module can be integrally mounted to the second mounting bracket 41 as a whole, improving assembly efficiency of the skin care device.

[0270] In some embodiments, the first drive assembly 42 also includes a first sensor 425, which is used to detect position information of the lead screw nut 4232. By detecting the position information of the lead screw nut 4232 by the first sensor 425 as feedback, the first motor 422 can more accurately drive the transmission shaft 31 to move, thereby ultimately improving the adjustment accuracy of the transducer assembly 200.

[0271] Exemplarily, the first driving assembly 42 further includes a fourth circuit board 426 , which is mounted on the lead screw module 423 , and the first sensor 425 is mounted on a side of the fourth circuit board 426 facing the lead screw module 423 .

[0272] In some embodiments, the screw module 423 further includes a screw seat 4233, the screw 4231 is rotatably mounted on the screw seat 4233, and a sliding portion 4234 is provided on the outer periphery of the screw nut 4232, which is slidably connected to the screw seat 4233. This can make the sliding trajectory of the pusher 421 more stable and reliable.

[0273] The first sensor 425 may be provided corresponding to the sliding portion 4234 to detect position information of the lead screw nut 4232 .

[0274] For example, the first sensor 425 may include a Hall sensor, a photoelectric sensor, etc., which is not limited in this embodiment of the present application.

[0275] In some embodiments, the first motor 422 is a stepper motor, which can further improve the adjustment accuracy of the transducer assembly 200 .

[0276] In some embodiments, the second drive assembly 43 includes a second motor 431. The output shaft of the second motor 431 is in a transmission connection with the transmission shaft 31 so as to be relatively movable along the first axis L1. The second motor 431 is configured to drive the transmission shaft 31 to rotate synchronously about the first axis L1 via the output shaft, and is configured to enable the transmission shaft 31 to move along the first axis L1 relative to the output shaft of the second motor 431. Therefore, when the first drive assembly 42 drives the transmission shaft 31 to move along the first axis L1, the transmission shaft 31 can move along the first axis L1 relative to the output shaft of the second motor 431.

[0277] In the first transmission connection between the output shaft of the second motor 431 and the transmission shaft 31, the second drive assembly 43 includes an adapter 432 fixedly connected to the output shaft of the second motor 431. The adapter 432 is provided with a transmission hole 4321. The transmission hole 4321 extends along the first axis L1. The transmission hole 4321 is a non-circular hole. The end of the transmission shaft 31 facing away from the sound output area 111 is slidably disposed within the transmission hole 4321 along the first axis L1. Therefore, a simple connection can also be made in which the adapter 432 is sleeved on the transmission shaft 31, so that the transmission shaft 31 can be telescopically inserted through the adapter 432 along the first axis L1.

[0278] It should be noted that the transmission hole 4321 can be an elliptical hole, a square hole, a triangular hole or any other special-shaped hole, and this embodiment of the present application does not limit this.

[0279] In some embodiments, the second motor 431 is a stepping motor, which can further improve the adjustment accuracy of the transducer assembly 200 .

[0280] It should be understood that the drive assembly 400 may also be provided with only the first drive assembly 42 without being provided with the second drive assembly 43. That is, the first drive assembly 42 includes a first motor 422 and a pusher 421, the first motor 422 is transmission-connected to the pusher 421, the driving end of the pusher 421 is clamped in the transmission groove relative to the transmission shaft 31 to form a transmission connection, and the first motor 422 is used to drive the transmission shaft 31 to move along the axial direction through the pusher 421. In this case, the drive assembly 400 may include the second drive assembly 43, and the second drive assembly 43 may also be provided on the side of the first drive assembly 42 away from the transducer assembly 200. The drive assembly 400 may also not be provided with the second drive assembly 43, and this embodiment of the application is not limited to this.

[0281] Please continue to refer to Figure 16 In the second transmission connection mode between the output shaft of the second motor 431 and the transmission shaft 31, the second drive assembly 43 includes an adapter 432 fixedly connected to the output shaft of the second motor 431, the adapter 432 is provided with a first transmission notch 4322, and the transmission shaft 31 is provided with a second transmission notch 316 that matches the first transmission notch 4322.

[0282] For example, both the first transmission notch 4322 and the second transmission notch 316 extend along the first axis L1, with the adapter 432 embedded in the second transmission notch 316 and the drive shaft 31 embedded in the first transmission notch 4322. For example, the adapter 432 may be semi-cylindrical, with one end of the drive shaft 31 also being semi-cylindrical and mating with the adapter 432, thereby enabling them to abut against each other and form a cylindrical structure. In other words, unlike the first transmission connection between the output shaft of the second motor 431 and the drive shaft 31, the adapter 432 need not be sleeved on the drive shaft 31.

[0283] Of course, one of the side walls of the first transmission gap 4322 and the second transmission gap 316 can be provided with a sliding groove extending along the first axis L1, and the other can be provided with a slider extending along the direction of the first axis L1, and the slider is slidably installed in the sliding groove.

[0284] In the third transmission connection between the output shaft of the second motor 431 and the transmission shaft 31, the output shaft of the second motor 431 is provided with a first transmission notch 4322, and the transmission shaft 31 is provided with a second transmission notch 316 that mates with the first transmission notch 4322. In other words, unlike the second transmission connection between the output shaft of the second motor 431 and the transmission shaft 31, the output shaft of the second motor 431 can directly mate with the transmission shaft 31, eliminating the need for an additional adapter 432.

[0285] Please continue to refer to Figure 17 Alternatively, in the second positional relationship between the first drive assembly 42 and the second drive assembly 43, the second drive assembly 43 may be located between the first drive assembly 42 and the transducer assembly 200. Thus, compared to disposing the first drive assembly 42 and the second drive assembly 43 in the same region along the first axis L1 of the transmission shaft 31, the embodiment of the present application disposes the first drive assembly 42 and the second drive assembly 43 at different positions along the first axis L1 of the transmission shaft 31, thereby making the skin care device thinner at various locations along the first axis L1.

[0286] For example, Figure 17As shown in Figure 17a, the second drive assembly 43 is installed at the end of the transmission shaft 31 away from the transducer assembly 200, the first drive assembly 42 includes a first motor 422, and the first motor 422 is located on the side of the second drive assembly 43 away from the transducer assembly 200. A transmission groove is provided on the peripheral side surface of the transmission shaft 31, and the transmission groove is located between the dielectric shell 500 and the second drive assembly 43. The drive assembly 400 also includes a pushing member 421, one end of the pushing member 421 is rotatably clamped in the transmission groove relative to the transmission shaft 31 to form a transmission connection, and the other end of the pushing member 421 is transmission-connected to the first motor 422, so that the first motor 422 can push the transmission shaft 31 to move along the first axis L1 direction through the pushing member 421.

[0287] It can also be understood that the transmission connection method between the second drive component 43 and the transmission shaft 31 can refer to the transmission connection method between the second drive component 43 and the transmission shaft 31 in the second positional relationship between the first drive component 42 and the second drive component 43 mentioned above, and the embodiment of the present application will not be repeated here.

[0288] Optional, such as Figure 17 As shown in Figure 17b, a transmission groove is provided on the circumferential side surface of the end of the transmission shaft 31 facing away from the transducer assembly 200, and the first driving assembly 42 includes a first motor 422 and a pusher 421. One end of the pusher 421 is rotatably clamped in the transmission groove relative to the transmission shaft 31 to form a transmission connection, and the other end of the pusher 421 is transmission-connected to the first motor 422, so that the first motor 422 pushes the transmission shaft 31 to move along the first axis L1 through the pusher 421. The second driving assembly 43 includes a first gear 433, a second gear 434, and a second motor 431. The first gear 433 can rotate synchronously and can be relatively slidably sleeved on the transmission shaft 31. The second gear 434 is meshed with the first gear 433, and the output shaft of the second motor 431 is fixedly connected to the first gear 433. Thereby, the second drive component 43 is located between the first drive component 42 and the transducer component 200; wherein the first gear 433 can be slidably mounted on the outside of the transmission shaft 31 through the non-circular hole to cooperate with the transmission shaft 31, so that the first gear 433 can rotate synchronously and can be relatively slidably mounted on the transmission shaft 31.

[0289] Please continue to refer to Figure 18 、 Figure 19 and Figure 27In some embodiments, the skin care device further includes a second mounting bracket 41. The second mounting bracket 41 may include a first transverse plate 413, a first enclosing plate 414, and a second enclosing plate 415. The first transverse plate 413 is located on the side of the transmission shaft 31 away from the transducer assembly 200, and one side surface of the first transverse plate 413 in the thickness direction faces the transducer assembly 200. The second drive assembly 43 is at least partially mounted on the side of the first transverse plate 413 away from the transducer assembly 200. The first enclosing plate 414 is connected to the first transverse plate 413, and the first enclosing plate 414 is located on the outer peripheral side of the transmission shaft 31 and extends circumferentially along the transmission shaft 31. The second enclosing plate 415 is connected to the first transverse plate 413, and the second enclosing plate 415 is located on the outer peripheral side of the second drive assembly 43 (for example, the second motor 431 of the second drive assembly 43) and extends circumferentially along the second drive assembly 43. The first enclosure plate 414 and the second enclosure plate 415 are both connected and fixed to the housing 100 , and the first enclosure plate 414 and the second enclosure plate 415 are located on different sides of the first axis L1 in the circumferential direction.

[0290] Thus, the first enclosure 414 and the second enclosure 415 can respectively provide protection for the transmission shaft 31 and the second drive assembly 43, and the second mounting bracket 41 can be connected to the housing 100 from different sides in the circumferential direction of the first axis L1, thereby improving the stability and reliability of the installation of the second mounting bracket 41.

[0291] In some embodiments, the second mounting bracket 41 further includes a third enclosing plate 416, which is connected to the first transverse plate 413. The third enclosing plate 416 and the second enclosing plate 415 are arranged in a spaced-apart arrangement along the circumference of the second drive assembly 43 (e.g., the second motor 431 of the second drive assembly 43). Therefore, the second mounting bracket 41 can be connected to the housing 100 from different sides of the circumference of the first axis L1, thereby improving the stability and reliability of the installation of the second mounting bracket 41.

[0292] In some embodiments, the third enclosure 416 and the first enclosure 414 are fixedly connected to the housing 100 on the same side of the first axis L1 in the circumferential direction, and the third enclosure 416 and the second enclosure 415 are fixedly connected to the housing 100 on opposite sides of the first axis L1 in the circumferential direction.

[0293] Please combine Figure 20 and Figure 21 In some embodiments, the skin care device is further provided with a first circuit board assembly 71 , which includes a first circuit board 711 and a button 712 .

[0294] One side surface of the first circuit board 711 in the thickness direction may face the outer peripheral surface of the first enclosure 414 , and the button 712 is disposed on the side of the first circuit board 711 away from the first enclosure 414 .

[0295] The side surface of the outer surface of the first enclosure 414 facing the first circuit board 711 is a plane, so compared with the side surface of the outer surface of the first enclosure 414 facing the first circuit board 711 which is a curved surface convex toward the first circuit board 711, more space can be reserved between the first enclosure 414 and the first circuit board 711 to set up some parts, which is conducive to the miniaturized design of the skin care device.

[0296] For example, the first circuit board assembly 71 further includes a first component 713, which is located on the side of the first circuit board 711 facing the first enclosure 414. A first connecting portion 4141 is protruding from the side of the first enclosure 414 facing the first circuit board 711. A second connecting portion and a first reinforcing rib 1211 are connected to the inner wall of the housing 100. The second connecting portion is fixedly connected to the first connecting portion 4141. Along the first axis L1, the orthographic projection of at least one of the first connecting portion 4141, the second connecting portion, and the first reinforcing rib 1211 at least partially overlaps with the orthographic projection of the first component 713. This allows full utilization of the space between the first enclosure 414 and the first circuit board 711, facilitating the miniaturization of the skin care device.

[0297] In some embodiments, the second mounting bracket 41 further includes at least one second transverse plate 417 connected to the first enclosure 414. All second transverse plates 417 and the first transverse plate 413 are arranged along the first axis L1. Thus, the second transverse plates 417 can improve the structural strength of the first enclosure 414.

[0298] In some embodiments, the second transverse plate 417 may be provided with a third mounting hole 411. The transmission shaft 31 passes through the third mounting hole 411 and has a clearance fit therewith. Thus, the second mounting bracket 41 can provide a certain position limit for the transmission shaft 31 via the second transverse plate 417 to prevent severe radial runout of the transmission shaft 31 during rotation.

[0299] In some embodiments, at least one second transverse plate 417 is fixedly connected to the first drive assembly 42, and the first drive assembly 42 and the first enclosure 414 are located on opposite sides of the transmission shaft 31 in the circumferential direction, thereby making the internal structure of the skin care device more compact.

[0300] In some embodiments, along the first axis L1, at least 80% of the orthographic projection of the first drive assembly 42 overlaps with the orthographic projection of the dielectric housing 500, and at least 80% of the orthographic projection of the second drive assembly 43 overlaps with the orthographic projection of the dielectric housing 500. Thus, the dielectric housing 500, the first drive assembly 42, and the second drive assembly 43 are substantially located within the same virtual cylinder, making the components within the housing 100 more compact.

[0301] In some embodiments, the drive assembly 400 is disposed on a side of the transducer assembly 200 away from the sound output area 111, and the drive assembly 400 is in transmission connection with the transmission shaft assembly 300 to drive the transmission shaft assembly 300 to move, for example, to drive the transmission shaft assembly 300 to rotate around the first axis L1 and / or move along the first axis L1.

[0302] Please continue to refer to Figure 21 The skin care device may further include a second circuit board assembly 72, which includes a second circuit board 721 and a third circuit board 722. The second circuit board 721 and the third circuit board 722 are stacked and arranged on a side of the driving assembly 400 away from the transducer assembly 200.

[0303] Therefore, compared to using a single large board to replace the second circuit board 721 and the third circuit board 722, the embodiment of the present application stacks the second circuit board 721 and the third circuit board 722 on the side of the drive assembly 400 facing away from the transducer assembly 200, which can effectively reduce the length of the second circuit board assembly 72, thereby facilitating a reduction in the lengthwise dimension of the skin care device on the second circuit board assembly 72. At the same time, the space on the side of the drive assembly 400 facing away from the transducer assembly 200 can be reused, thereby facilitating a miniaturized design of the housing 100. Compared to arranging the drive assembly 400 on the side that drives the thickness direction of the second circuit board assembly 72, in the present application, arranging the second circuit board assembly 72 on the side of the drive assembly 400 facing away from the transducer assembly 200 can facilitate a reduction in the circumferential dimension of the skin care device, i.e., can facilitate a thinner configuration of the skin care device to avoid the skin care device being too thick, thereby facilitating a miniaturized design and gripping of the skin care device.

[0304] For example, the housing 100 is long and narrow, with the sound-emitting area 111, transducer assembly 200, driver assembly 400, and second circuit board assembly 72 arranged in sequence along the length of the skin care device. The second circuit board 721 and the third circuit board 722 are both arranged to extend along the length of the skin care device. This allows for charging and utilizing the space within the housing 100 along its length, preventing the housing 100 from being too thick to be easily stored or held. Furthermore, stacking the second circuit board 721 and the third circuit board 722 on the side of the driver assembly 400 facing away from the transducer assembly 200 also helps increase the weight of the rear end of the housing 100, bringing the center of gravity of the skin care device closer to the center of the housing 100, thereby reducing fatigue when the user holds the device.

[0305] In some embodiments, the second circuit board assembly 72 further includes a power interface 7211 and a transformer 7212. Both the power interface 7211 and the transformer 7212 are mounted on the second circuit board 721. The power interface 7211 is used to electrically connect to an external power source, and the transformer 7212 is electrically connected to the transducer assembly 200 to drive the transducer assembly 200. It is understood that the transducer assembly 200 requires a relatively high operating voltage to drive, so both the power interface 7211 and the transformer 7212 are disposed on the second circuit board 721 so that the externally inputted relatively high voltage electrical energy can directly drive the transducer assembly 200.

[0306] In some embodiments, the third circuit board 722 is electrically connected to the second circuit board 721, so that the second circuit board 721 can transmit a portion of the power input from the external power supply to the third circuit board 722. The third circuit board 722 is electrically connected to the driving assembly 400 to drive the driving assembly 400. In actual operation, the second circuit board 721 can divert a portion of the low-voltage power input from the power interface 7211 to the third circuit board 722 to drive the driving assembly 400, while the higher-voltage power continues to drive the transducer assembly 200.

[0307] It is understandable that the second circuit board assembly 72 is electrically connected to the transducer assembly 200 , and therefore tends to generate a large amount of heat during operation, thereby affecting the normal use of the skin care device.

[0308] Based on this, in some embodiments, the skin care device may further include a fan 73, which is disposed within the housing 100 and is used to drive air convection between the inside and outside of the housing 100 to dissipate heat from the interior of the housing 100, thereby improving the heat dissipation effect of the skin care device.

[0309] For example, please refer to Figure 21 and Figure 22The housing 100 is formed with a first air vent 16 and a second air vent 17, and the second circuit board assembly 72 is located between the first air vent 16 and the second air vent 17. Thus, the fan 73 can drive air inside and outside the housing to form convection through the first air vent 16 and the second air vent 17. Furthermore, since the second circuit board assembly 72 is located between the first air vent 16 and the second air vent 17, the flowing air can largely flow through the heat-generating area of the second circuit board assembly 72, thereby improving the heat dissipation effect of the second circuit board assembly 72.

[0310] The fan 73 may be disposed on the second circuit board 721 so that the fan 73 is located between the first air outlet 16 and the second air outlet 17 to dissipate heat at least for the second circuit board assembly 72 .

[0311] In some embodiments, the second air outlet 17 may be located on an end surface of the housing 100 that is away from the sound output area 111 .

[0312] In some embodiments, a gripping area is formed outside the housing 100 , and the first air vent 16 and the second air vent 17 are disposed at two ends of the gripping area.

[0313] The fan 73 and the transformer 7212 can be arranged side by side on the same side of the second circuit board 721; and / or the fan 73 can be located on the side of the transformer 7212 facing away from the drive assembly 400. Since the fan 73 and the transformer 7212 are both relatively thick components, by arranging the fan 73 and the transformer 7212 side by side on the same side of the second circuit board 721, rather than on different sides of the second circuit board 721, the overall thickness of the fan 73, the transformer 7212, and the second circuit board 721 can be reduced, thereby facilitating a slimmer design for the skin care device.

[0314] In some embodiments, the transformer 7212 is disposed at an end of the second circuit board 721 close to the transducer assembly 200, and the fan 73 is at least partially located on a side of the transformer 7212 facing away from the transducer assembly 200. Therefore, compared to when the transformer 7212 is located on a side of the fan 73 facing away from the transducer assembly 200, the transformer 7212 can be closer to the transducer assembly 200, thereby shortening the electrical connection line between the transformer 7212 and the transducer assembly 200.

[0315] The fan 73 may be a centrifugal fan 73 or any other type of fan 73, and this embodiment of the present application does not limit this.

[0316] In some embodiments, the fan 73 is mounted on the second circuit board 721 so that a space for air flow is formed between the fan 73 and the second circuit board 721 , thereby improving the heat dissipation effect at the second circuit board assembly 72 .

[0317] In some embodiments, the fan 73 has two air inlets, one of which faces the second circuit board 721, and the other faces away from the second circuit board 721. Thus, the fan 73 can drive air to flow between the fan 73 and the second circuit board 721 to improve the heat dissipation effect at the second circuit board assembly 72.

[0318] In some embodiments, the air outlet of the fan 73 is located on the side of the fan 73 away from the transducer assembly 200 and toward the second air outlet 17. Therefore, the first air outlet 16 can be the air inlet of the housing 100, and the second air outlet 17 can be the air outlet of the housing 100.

[0319] In some embodiments, the housing 100 is elongated, with the sound outlet region 111 located at one end of the housing 100 in the longitudinal direction, and the second air outlet 17 located at the other end of the housing 100 in the longitudinal direction. Furthermore, along the longitudinal direction of the housing 100, the first air outlet 16 is located between the sound outlet region 111 and the second air outlet 17, and the transducer assembly 200 is located between the sound outlet region 111 and the first air outlet 16. Thus, the fan 73 can drive air through the second circuit board assembly 72 to dissipate heat from the second circuit board assembly 72.

[0320] In some embodiments, at least a portion of the first air outlet 16 faces the drive assembly 400 , so that the fan 73 can be reused to dissipate heat for the drive assembly 400 .

[0321] In some embodiments, the second circuit board assembly 72 also includes a conversion module 7213 arranged on the second circuit board 721, the input end of the conversion module 7213 is electrically connected to the power interface 7211, and the output end of the conversion module 7213 is electrically connected to the transformer 7212, so that the conversion module 7213 is used to convert the direct current input by the power interface 7211 into alternating current output to the transformer 7212.

[0322] The conversion module 7213 may be at least partially located on a side of the fan 73 close to the second circuit board 721, or at least partially located between the fan 73 and the transformer 7212. In other words, the fan 73 may be mounted on the conversion module 7213, or the fan 73 and the transformer 7212 may be arranged side by side on the same side of the second circuit board 721, so that the fan 73 drives air to flow through the conversion module 7213 to dissipate heat from the conversion module 7213. This is not limited in this embodiment of the present application.

[0323] In some implementations, the conversion module 7213 may include a push-pull circuit, a full-bridge circuit, or a half-bridge circuit, which is not limited in this embodiment of the present application.

[0324] In some embodiments, the conversion module 7213 includes a switch tube. The switch tube can be located between the fan 73 and the transformer 7212. For example, the switch tube can be a MOS tube, a silicon tube, etc., which is not limited in this embodiment of the present application.

[0325] In some embodiments, the first air vent 16 is located on a side of the second circuit board 721 close to the transducer assembly 200, and the second air vent 17 is located on a side of the second circuit board 721 away from the transducer assembly 200. Thus, the fan 73 can drive air to flow through the transformer 7212 and the conversion module 7213 to dissipate heat from the transformer 7212 and the conversion module 7213.

[0326] In some embodiments, the second circuit board assembly 72 may not be provided with a transformer 7212. That is, the second circuit board assembly 72 further includes a conversion module 7213, which is provided on the second circuit board 721. The conversion module 7213 is used to convert the input direct current into alternating current and output it. In this case, the second circuit board 721 may be provided with a transformer 7212, so that the voltage output by the conversion module 7213 is boosted by the transformer 7212 and then output to the transducer assembly 200. The second circuit board 721 may also be provided without a transformer 7212, so that the alternating current output by the conversion module 7213 directly drives the transducer assembly 200. This embodiment of the present application is not limited to this.

[0327] In some embodiments, the drive assembly 400 includes a first drive assembly 42, a second drive assembly 43, and a sensor assembly. The first drive assembly 42 and the second drive assembly 43 are both in transmission connection with the transducer assembly 200 to drive the transducer assembly 200 to move along different paths. The sensor assembly is used to detect information about the movement of the transducer assembly 200 driven by the first drive assembly 42 and / or the second drive assembly 43. The second circuit board assembly 72 further includes a first control interface, which is mounted on the third circuit board 722. The number of first control interfaces is less than or equal to two. The first drive assembly 42, the second drive assembly 43, and the sensor assembly are all connected to the first control interface to be electrically connected to the third circuit board 722.

[0328] Then, compared to the first drive component 42, the second drive component 43 and the sensor component being respectively connected to different first control interfaces, the embodiment of the present application can be understood as merging the corresponding interfaces of at least two of the first drive component 42, the second drive component 43 and the sensor component to reduce the number of first control interfaces on the third circuit board 722, thereby facilitating the miniaturization design of the skin care device.

[0329] In some embodiments, along the direction from the transducer assembly 200 toward the driving assembly 400 , at least one side of the orthographic projection of the driving assembly 400 along the thickness direction of the second circuit board assembly 72 protrudes outside the orthographic projection of the second circuit board assembly 72 .

[0330] For example, when the positive projection of the driving assembly 400 protrudes outside the positive projection of the second circuit board assembly 72 on each side along the thickness direction of the second circuit board assembly 72 along the direction of the transducer assembly 200 toward the driving assembly 400, the housing 100 can be made thinner at the second circuit board assembly 72 for easier gripping.

[0331] Exemplarily, the second circuit board assembly 72 further includes a second component 7221. The second component 7221 is disposed on a side of the third circuit board 722 facing away from the second circuit board 721. The maximum thickness of the second circuit board assembly 72 is the distance from the surface of the transformer 7212 facing away from the second circuit board 721 to the surface of the second component 7221 facing away from the second circuit board 721. Along the thickness direction of the second circuit board assembly 72, the maximum thickness of the driver assembly 400 is less than the maximum thickness of the second circuit board assembly 72.

[0332] Exemplarily, the second circuit board assembly 72 also includes a second component 7221, which is arranged on the side of the third circuit board 722 facing away from the second circuit board 721, and the height of the second component 7221 protruding from the side of the third circuit board 722 facing away from the second circuit board 721 is less than the height of the driving assembly 400 protruding from the side of the third circuit board 722 facing away from the second circuit board 721.

[0333] Illustratively, the height of the transformer 7212 protruding from the side of the second circuit board 721 facing away from the third circuit board 722 is smaller than the height of the driving component 400 protruding from the side of the second circuit board 721 facing away from the third circuit board 722 .

[0334] In some embodiments, the transformer 7212 is a planar transformer, which can take advantage of the inherent lightness and thinness of the planar transformer to make the skin care device even lighter and thinner.

[0335] In some embodiments, one side surface of the transformer 7212 in the thickness direction faces the second circuit board 721 and faces away from the third circuit board 722. Therefore, it can be understood that the planar transformer is horizontally mounted on the second circuit board 721, making the second circuit board assembly 72 thinner overall.

[0336] In some embodiments, one side surface of the fan 73 in the thickness direction is arranged toward one side surface of the second circuit board 721 in the thickness direction. Therefore, it can also be understood that the fan 73 is also installed horizontally to make the second circuit board assembly 72 thinner as a whole.

[0337] In some embodiments, the skin care device further includes a first circuit board assembly 71, which includes a first circuit board 711 and a human-computer interaction component. The first circuit board 711 is disposed within the housing 100 and is electrically connected to the second circuit board assembly 72. The first circuit board 711 extends from the drive assembly 400 toward the transducer assembly 200, with one side of the first circuit board 711 facing the drive assembly 400. The human-computer interaction component is disposed on the side of the first circuit board 711 facing away from the drive assembly 400.

[0338] For example, as mentioned above, the human-computer interaction component may be the button 712 .

[0339] In some embodiments, the first circuit board assembly 71 further includes a display component 714 , which is disposed on a side of the first circuit board 711 facing away from the driving assembly 400 , and is located on a side of the human-computer interaction component close to the sound output area 111 .

[0340] In some embodiments, the skin care device further includes an electrical stimulation component 800, which includes an electrode sheet 81. The electrode sheet 81 is at least partially located outside the sound output area 111 to output current to the skin to be treated. This allows the skin care device to have at least two functions: focused ultrasound skin care and electrical stimulation, thus enriching the functionality of the skin care device.

[0341] In some embodiments, the housing 100 includes a first end surface 1121 on which the sound output area 111 is formed, and the electrode sheet 81 is only located on the first end surface 1121 , resulting in poor adhesion between the electrode sheet 81 and the skin.

[0342] Please refer to Figure 23 and Figure 24 Based on this, in some embodiments, the housing 100 further includes a third side surface 1122 that is bent and connected to the first end surface 1121. The electrode sheet 81 is at least partially located on the first end surface 1121 and at least partially located on the third side surface 1122. Therefore, since the skin has a certain degree of elasticity, when the first end surface 1121 is attached to the skin to be treated, a depression is formed on the skin to be treated. At this time, the portions of the electrode sheet 81 located on the first end surface 1121 and the third side surface 1122 can both be well attached to the inner side of the depression, thereby increasing the contact area between the electrode sheet 81 and the skin to be treated, thereby improving the contact effect between the electrode sheet 81 and the skin.

[0343] For example, the electrode sheet 81 may include a first electrode sheet, the outer surface of which extends from the first end surface 1121 to the third side surface 1122; and / or the electrode sheet 81 may include a second electrode sheet and a third electrode sheet, the outer surface of the second electrode sheet being located at the first end surface 1121, and the outer surface of the third electrode sheet being located at the third side surface 1122. Thus, the electrode sheet 81 is provided at both the third side surface 1122 and the first end surface 1121.

[0344] In some embodiments, the first electrode sheet includes a fitting portion 811 and a penetration portion 812. The fitting portion 811 includes a front portion 8111 and a side portion 8112 that are connected by a bend. The front portion 8111 protrudes from the first end surface 1121, and the side portion 8112 protrudes from the third side surface 1122, so that the outer surface of the first electrode sheet extends from the first end surface 1121 to the third side surface 1122. The penetration portion 812 protrudes from the inner surface of the front portion 8111 and penetrates the housing 100, thereby achieving the installation and fixation of the first electrode sheet and facilitating the first electrode sheet to extend into the interior of the housing 100 for electrical connection.

[0345] In some embodiments, the first electrode sheet further includes a connecting rib 813 , which is connected between the side portion 8112 and the penetration portion 812 , thereby improving the structural strength of the side portion 8112 through the connecting rib 813 to prevent the side portion 8112 from warping and damage.

[0346] In some embodiments, the edges of the outer surface of the electrode sheet 81 are provided with rounded chamfers to prevent the electrode sheet 81 from having straight edges that may scratch the skin or cause discomfort to the skin.

[0347] Exemplarily, the outer surface of the front portion 8111 and the outer surface of the side portion 8112 are rounded transitions, thereby preventing the electrode sheet 81 from having straight edges that may scratch the skin or cause discomfort to the skin.

[0348] In some embodiments, the housing 100 is provided with a receiving groove 115 and a second through-hole 116. The notch of the receiving groove 115 extends from the first end surface 1121 to the third side surface 1122. The front portion 8111 and the side portion 8112 are both embedded in the receiving groove 115, thereby providing a certain positioning and fixing effect for the front portion 8111 and the side portion 8112 through the receiving groove 115. One end of the second through-hole 116 faces the first end surface 1121 and communicates with the bottom wall of the receiving groove 115. The through-hole 812 is inserted into the second through-hole 116 to facilitate installation and fixing of the through-hole 812.

[0349] In some embodiments, the sound output region 111 includes a first sound output hole 1111 provided on the housing 100. A first annular protrusion 117 is formed on the inner wall of the housing 100, surrounding the first sound output hole 1111. A glue-dispensing annular groove 1171 is formed on the outer periphery of the first annular protrusion 117, which communicates with the second through-hole 116. The through-hole 812 is disposed within the glue-dispensing annular groove 1171, which is filled with sealant. Consequently, the sealant within the glue-dispensing annular groove 1171 provides a good sealing effect on the second through-hole 116.

[0350] In some embodiments, the electrical stimulation assembly 800 may further include a fifth circuit board 82 , which surrounds the outer periphery of the medium chamber 51 . All the electrode pads 81 are connected to the fifth circuit board 82 .

[0351] The fifth circuit board 82 can be electrically connected to the second circuit board assembly 72. Thus, the second circuit board assembly 72 controls the electrical stimulation assembly 800 through the fifth circuit board 82.

[0352] The fifth circuit board 82 may abut against the first annular protrusion 117 to provide support and position limitation for the fifth circuit board 82 .

[0353] In some embodiments, the electrical stimulation component 800 further includes a third fastener (not shown in the figure), which is passed through the fifth circuit board 82 and connected and fixed to the passing portion 812, thereby achieving connection and fixation between the fifth circuit board 82 and the electrode sheet 81.

[0354] For example, the through-hole 812 is provided with a threaded hole 8121. Accordingly, the third fastener may include a fastening screw to threadably fix the through-hole 812 to the third fastener.

[0355] In some embodiments, the skin care device further includes a temperature sensor (not shown), which is located within the housing 100 and mounted on the electrode sheet 81. Thus, the temperature of the electrode sheet 81 can be detected by the temperature sensor, and the temperature change of the electrode sheet 81 can be used to determine whether the electrode sheet 81 or the first end surface 1121 is in contact with the skin to be treated.

[0356] Accordingly, the skin care device further includes a skin contact detection module, which is connected to the temperature sensor and is used to detect the contact state between the first end surface 1121 and the skin to be treated. The skin contact detection module can be disposed on the fifth circuit board 82 and can adopt any skin contact detection circuit in the prior art, which is not limited in this embodiment of the present application.

[0357] For example, the penetration portion 812 is provided with a detection hole 8122 , and a temperature sensor is installed in the detection hole 8122 .

[0358] like Figure 21 As shown, in some embodiments, the fifth circuit board 82 is further provided with a fitting detection component 83, which is at least partially disposed in the glue-dotting ring groove 1171, and the fitting detection component 83 is used to detect the fitting state between the first end face 1121 and the skin to be treated.

[0359] For example, the fit detection component 83 may include a detection capacitor. Accordingly, the fifth circuit board 82 may also be provided with a skin fit detection circuit, which is electrically connected to the fit detection component 83 or the detection capacitor.

[0360] In some embodiments, there are multiple electrode pads 81 , so that a larger area of the skin to be treated can be electrically stimulated by the multiple electrode pads 81 .

[0361] For example, a plurality of electrode sheets 81 are arranged circumferentially around the sound output area 111 , so that the distribution area of the electrode sheets 81 is larger, so as to electrically stimulate a larger area of the skin to be treated.

[0362] In some embodiments, the electrode sheet 81 protrudes from the outer surface of the shell 100 by 0.05 to 0.25 mm, thereby preventing the electrode sheet 81 from protruding too much from the outer surface of the shell 100 and affecting the fit of the first end face 1121 to the skin to be treated, and also preventing the electrode sheet 81 from protruding too little from the outer surface of the shell 100 or even sinking into the shell 100, resulting in the electrode sheet 81 being unable to fit the skin to be treated.

[0363] In some embodiments, the electrical stimulation component 800 may include at least one of an EMS electrical stimulation component and an RF electrical stimulation component, so that the electrode patch 81 is used to output at least one of an EMS current and a radio frequency current.

[0364] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0365] The above is a detailed introduction to the skin care device provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. At the same time, for those skilled in the art, based on the ideas of the present application, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A skin care device, characterized in that include: A housing, wherein the housing is provided with a sound outlet area, and the housing is further provided with a first air outlet and a second air outlet; a dielectric shell, wherein the dielectric shell is at least partially disposed within the outer shell, and a dielectric chamber is formed between the dielectric shell or the dielectric shell and the outer shell, and the dielectric chamber is used to store an ultrasonic conductive medium; a transducer assembly, the transducer assembly being disposed in the medium chamber, wherein the ultrasonic focus of the transducer assembly passes through the sound output area so as to be emitted into the skin to be treated; a second circuit board assembly, the second circuit board assembly being disposed in the housing, the second circuit board assembly being disposed outside the dielectric chamber and electrically connected to the transducer assembly, and the second circuit board assembly being located between the first air outlet and the second air outlet; and A fan is installed in the housing, the fan is located between the first air outlet and the second air outlet, and the fan is used to drive the air inside and outside the housing to convect through the first air outlet and the second air outlet to dissipate heat for at least the second circuit board assembly.

2. The skin care device according to claim 1, characterized in that The second circuit board assembly includes a second circuit board and a transformer provided on the second circuit board, wherein an output end of the transformer is electrically connected to the transducer assembly; The transformer is arranged at one end of the second circuit board close to the transducer assembly, and the fan is at least partially located on a side of the transformer away from the transducer assembly.

3. The skin care device according to claim 2, characterized in that The second circuit board assembly further includes a conversion module, which is disposed on the second circuit board and electrically connected to the transformer, and is configured to convert input direct current into alternating current and output the alternating current to the transformer; The conversion module is at least partially located on a side of the wind turbine close to the second circuit board, or the conversion module is at least partially located between the wind turbine and the transformer.

4. The skin care device according to claim 3, characterized in that The conversion module includes a push-pull circuit, a full-bridge circuit or a half-bridge circuit; and / or The conversion module includes a switching tube.

5. The skin care device according to claim 3, characterized in that The first air outlet is located on a side of the second circuit board close to the transducer assembly, and the second air outlet is located on a side of the second circuit board away from the transducer assembly.

6. The skin care device according to claim 5, characterized in that The transformer is a planar transformer, and one side surface of the transformer in the thickness direction is arranged toward one side surface of the second circuit board in the thickness direction; and / or One side surface of the fan in the thickness direction is arranged toward one side surface of the second circuit board in the thickness direction.

7. The skin care device according to claim 3, characterized in that The second circuit board assembly also includes a power interface, which is used to electrically connect to a power source outside the housing. The power interface is installed at one end of the second circuit board away from the transducer assembly and is electrically connected to the input end of the conversion module.

8. The skin care device according to claim 1, wherein The first air vent is located on a side of the second circuit board close to the transducer assembly, and the second air vent is located on a side of the second circuit board away from the transducer assembly; The second circuit board assembly further includes a conversion module, which is provided on the second circuit board and is used to convert the input direct current into alternating current and output the alternating current; The conversion module is at least partially located on a side of the fan close to the second circuit board, or the conversion module is at least partially located on a side of the fan close to the first air outlet.

9. The skin care device according to any one of claims 1 to 8, characterized in that The fan is mounted on the second circuit board assembly so as to be located between the first air outlet and the second air outlet; and / or, The fan is a centrifugal fan; and / or, A gripping area is formed outside the shell, and the first air outlet and the second air outlet are arranged at two ends of the gripping area.

10. The skin care device according to claim 9, characterized in that The fan is mounted on the second circuit board so that a space for air flow is formed between the fan and the second circuit board.

11. The skin care device according to claim 10, characterized in that The fan has two air inlets, one of which faces the second circuit board, and the other faces away from the second circuit board.

12. The skin care device according to claim 11, characterized in that The air outlet of the fan is located on a side of the fan away from the transducer assembly and faces the second air outlet.

13. The skin care device according to any one of claims 1 to 8, characterized in that The housing is in the shape of an elongated strip, the sound outlet area is located at one end of the housing in the longitudinal direction, and the second air outlet is located at the other end of the housing in the longitudinal direction; Wherein, along the length direction of the housing, the first air outlet is located between the sound outlet area and the second air outlet, and the transducer assembly is located between the sound outlet area and the first air outlet.

14. The skin care device according to claim 13, characterized in that The skin care device further includes a drive assembly, the drive assembly being located between the transducer assembly and the second circuit board assembly, the drive assembly being in transmission connection with the transducer assembly to drive the transducer assembly to move; wherein at least a portion of the first air outlet faces the drive assembly; and / or, The second air outlet is located at an end surface of the other end in the longitudinal direction of the housing, and the end surface is arranged to be inclined with respect to the longitudinal direction of the housing.

Images