Skin care equipment

Abstract

The skin care equipment comprises a shell, a transmission shaft, a transducer assembly and a driving assembly, the transmission shaft is movably arranged in the shell, and the transmission shaft extends along a first axis; the transducer assembly is mounted on the transmission shaft; the driving assembly comprises a first driving assembly and a second driving assembly, the first driving assembly is in transmission connection with the transmission shaft, and the first driving assembly is used for driving the transmission shaft to rotate along the first axis, so that the focus of the transducer assembly rotates around the first axis; the second driving assembly is located between the first driving assembly and the transducer assembly, the second driving assembly is located on one side of the transmission shaft in the circumferential direction, and the second driving assembly is in transmission connection with the transmission shaft and used for driving the transmission shaft to move in the extending direction of the first axis so as to drive the transducer assembly to move in the extending direction of the first axis. The structure for driving the transducer assembly to move can be simplified.

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 related technologies, some ultrasonic therapeutic devices drive the focus of the ultrasonic transducer to achieve treatment of different parts of the skin. However, the driving structure is relatively complex. Utility Model Content

[0005] An embodiment of the present application provides a skin care device that can simplify the structure of driving the transducer assembly to move.

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

[0007] a housing, wherein the housing is provided with a sound output area;

[0008] a transmission shaft, the transmission shaft being movably disposed in the housing and extending along a first axis;

[0009] a transducer assembly, the transducer assembly being mounted on one end of the transmission shaft close to the sound-emitting area, the ultrasonic focus of the transducer assembly passing through the sound-emitting area for irradiation into the skin to be treated; and

[0010] A driving assembly, which includes a first driving assembly and a second driving assembly. The first driving assembly is located on the side of the transmission shaft away from the sound-emitting area. The first driving assembly is in transmission connection with the transmission shaft. The first driving assembly is used to drive the transmission shaft to rotate along the first axis, so that the focus of the transducer assembly rotates around the first axis. The second driving assembly is located between the first driving assembly and the transducer assembly. The second driving assembly is located on one side in the circumferential direction of the transmission shaft. The second driving assembly is in transmission connection with the transmission shaft to drive the transmission shaft to move along the extension direction of the first axis, so as to drive the transducer assembly to move in the extension direction of the first axis.

[0011] In the embodiment of the present application, the rotation of the transducer assembly around the first axis and the movement along the first axis can be realized through the first driving assembly and the second driving assembly. On this basis, by connecting the first driving assembly to one end of the transmission shaft away from the sound-emitting area and then arranging the second driving assembly between the first driving assembly and the transducer assembly, both the first driving assembly and the second driving assembly can be directly connected to the transmission shaft, so as to simplify the structure for driving the movement of the transducer assembly. Description of the Drawings

[0012] The following will combine the drawings and describe in detail the specific implementation manners of the present application, making the technical solutions and their beneficial effects of the present application obvious.

[0013] Figure 1 It is a schematic structural diagram of the skin care device provided by the embodiment of the present application.

[0014] Figure 2 It is Figure 1 a cross-sectional view of the skin care device shown along the A-A direction.

[0015] Figure 3 It is Figure 2 a schematic diagram of the first installation structure of the transmission shaft assembly and the transducer assembly shown.

[0016] Figure 4 It is Figure 2 a schematic diagram of the second installation structure of the transmission shaft assembly and the transducer assembly shown.

[0017] Figure 5 It is Figure 2 a schematic diagram of the third installation structure of the transmission shaft assembly and the transducer assembly shown.

[0018] Figure 6 It is Figure 3 a partial enlarged view at Y in

[0019] Figure 7 It is Figure 3Exploded view of the shown drive shaft assembly and transducer assembly.

[0020] Figure 8 is Figure 3 Stereogram of the shown drive shaft assembly and transducer assembly.

[0021] Figure 9 is Figure 1 Partial cross-sectional view of the shown skin care device along the A-A direction.

[0022] Figure 10 is Figure 9 Schematic structural diagram of the shown elastic deformation component.

[0023] Figure 11 is Figure 9 Schematic structural diagram of the shown sound-transmitting membrane.

[0024] Figure 12 is Figure 9 A cross-sectional view of the shown dielectric housing.

[0025] Figure 13 is Figure 9 Schematic structural diagram of the shown dielectric housing.

[0026] Figure 14 is Figure 2 Assembly schematic diagram of the shown drive assembly, drive shaft assembly and dielectric housing.

[0027] Figure 15 is Figure 14 Cross-sectional view of

[0028] Figure 16 is Figure 14 Schematic diagram of the second transmission structure between the shown drive assembly and drive shaft assembly.

[0029] Figure 17 17a and 17b in Figure 14 are respectively the schematic diagrams of the third and fourth transmission structures between the shown drive assembly and drive shaft assembly.

[0030] Figure 18 is Figure 9 Schematic structural diagram of the shown second mounting bracket Figure One .

[0031] Figure 19 is Figure 9 Schematic structural diagram of the shown second mounting bracket and drive assembly.

[0032] Figure 20 is Figure 1 Schematic structural diagram of the shown skin care device with a part of the outer shell removed.

[0033] Figure 21 The Figure 2 structural schematic diagram of the second circuit board assembly and the drive assembly shown in the figure.

[0034] Figure 22 The Figure 1 structural schematic diagram of the skin care device after removing another part of the housing shown in the figure.

[0035] Figure 23 The Figure 2 local enlarged view at X in

[0036] Figure 24 The Figure 23 structural schematic diagram of the electrode sheet shown in the figure.

[0037] Figure 25 The Figure 8 exploded view of the drive shaft assembly shown in the figure.

[0038] Figure 26 The Figure 9 structural schematic diagram of the elastic deformation component shown in the figure.

[0039] Figure 27 The Figure 9 structural schematic diagram of the second mounting bracket shown in the figure Figure Two . Specific embodiments

[0040] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0041] Please refer to Figure 1 and Figure 2 , the embodiments of the present application provide a skin care device, including a housing 100 and a skin care component 200a. The housing 100 is provided with 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 where the working area 111a of the housing 100 is located.

[0042] Specifically, the skin care device is an ultrasonic beauty instrument, the working area 111a includes a sound-emitting 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-emitting area 111 for shooting into the skin to be treated.

[0043] Of course, according to requirements, 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-based skin care component, and a hot compress-based skin care component. The embodiments of the present application do not limit this.

[0044] In some embodiments, the skin care device may further include a drive shaft assembly 300. The drive shaft assembly 300 is movably disposed within the housing 100, and the transducer assembly 200 is mounted at one end of the drive shaft assembly 300 close to the sound output area 111, so that the drive 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 through the drive shaft assembly 300 to improve the care effect of the skin care device.

[0045] Among them, the ultrasonic focus of the transducer assembly 200 is a focus point formed by the focusing of the ultrasonic energy generated by the transducer assembly 200.

[0046] In some embodiments, the skin care device may further include a drive component 400. The drive component 400 is disposed within 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.

[0047] It should be noted here that the skin care device may be provided with only any one of the drive shaft assembly 300 and the drive component 400, or may be provided with both the drive shaft assembly 300 and the drive component 400 at the same time. For example, when the skin care device is provided with only the drive shaft assembly 300, it may be that the user manually drives the drive shaft assembly 300 to move, thereby indirectly driving the transducer assembly 200 to move; when the skin care device is provided with only the drive shaft assembly 300, the drive component 400 can 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 drive shaft assembly 300 and the drive component 400 at the same time, the drive component 400 can drive the transducer assembly 200 to move through the drive shaft assembly 300. The embodiments of the present application do not limit this.

[0048] The above is an overall description of the skin care device. Next, the technical solutions of the embodiments of the present application will be further explained and described in conjunction with the drive shaft assembly 300.

[0049] In some embodiments, the drive shaft assembly 300 is rotatably mounted within the housing 100 about a first axis L1 for rotating the ultrasonic focus of the transducer assembly 200 about the first axis L1; and / or, the drive shaft assembly 300 is further configured to move along the extension direction of the first axis L1 for driving 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 farther from the sound-emitting area 111.

[0050] It should be noted that in this application, "and / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / ", unless otherwise specified, generally represents an "or" relationship between the front and back associated objects.

[0051] That is to say, the drive shaft assembly 300 can be rotatably mounted within the housing 100 only about the first axis L1, or can be movably mounted within the housing 100 only along the first axis L1, or can be rotatably and movably mounted within the housing 100 about the first axis L1. The embodiments of this application do not make any limitations in this regard.

[0052] Then, taking the drive shaft assembly 300 being rotatably and movably mounted within the housing 100 about the first axis L1 as an example, 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 closer to or farther from the sound-emitting area 111, so as to adjust the ultrasonic focus of the transducer assembly 200 to be at different depths inside the skin to be treated, for ultrasonic skin care of the skin at different subcutaneous depths; on the other hand, the drive shaft assembly 300 can drive the transducer assembly 200 to rotate about 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 for ultrasonic skin care, thereby increasing the acting area of ultrasonic skin care and improving the skin care effect.

[0053] It can be seen that the embodiments of this application can adjust the position of the ultrasonic focus of the transducer assembly 200 under the skin through the drive shaft assembly 300 to achieve ultrasonic skin care for different parts at the same depth and / or different parts at different depths inside the skin to be treated.

[0054] It can be understood that the first axis L1 can be the axis of the drive shaft assembly 300.

[0055] In some embodiments, the ultrasonic focus of the transducer assembly 200 is misaligned with the first axis L1. Thus, during the process that the transducer assembly 200 rotates around the first axis L1 following the drive shaft assembly 300, the ultrasonic focus of the transducer assembly 200 can rotate around the first axis L1.

[0056] Exemplarily, please continue to refer to Figure 3 , the transducer assembly 200 includes an ultrasonic transducer 21. The ultrasonic transducer 21 (or the axis line of the transducer assembly 200) is inclined with respect to the first axis L1 so that the ultrasonic focus of the transducer assembly 200 is misaligned with the first axis L1. Or rather, the axis line of the ultrasonic transducer 21 is inclined with respect to the first axis L1 so that the focus of the transducer assembly 200 is misaligned with the first axis L1.

[0057] It can be understood that by the inclined setting, the end of the transducer assembly 200 departing from the sound-emitting area 111 can be made to approach the first axis L1, thereby reserving more space for arranging other structures, which is conducive to the miniaturized design of the skin care device; also, the movement amplitude of the transducer assembly 200 can be reduced, thereby reducing the amplitude of the pressure change in the medium chamber to be introduced later.

[0058] It should be noted that when the skin care device is working, ultrasonic foci continuously distributed around the first axis L1 can be formed, or discontinuous ultrasonic foci distributed around the first axis L1 can be formed.

[0059] Optionally, please continue to refer to Figure 4 , the transducer assembly 200 includes an ultrasonic transducer 21. The ultrasonic transducer 21 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.

[0060] It can be understood that when the ultrasonic transducer 21 is eccentrically arranged with respect to the first axis L1, the transducer assembly 200 (or the axis line of the transducer assembly 200) can be parallel to the first axis L1.

[0061] In some embodiments, the transducer assembly 200 is fixedly arranged on the drive shaft assembly 300 without relative rotation and movement, thereby improving the reliability of the installation of the transducer assembly 200. However, during the process that the drive shaft assembly 300 drives the transducer assembly 200 to move around, the power cord connected to the transducer assembly 200 will get entangled, ultimately resulting in the jamming of the drive shaft assembly 300.

[0062] Such as Figure 3As shown in the figure, based on this, in the first embodiment to avoid the winding of the power cord connected to the transducer assembly 200, the ultrasonic transducer 21 is rotatably mounted on the drive shaft assembly 300 around the second axis L2, so as to enable the transducer assembly 200 to rotate relative to the drive shaft assembly 300 around the second axis L2 during the process of the drive shaft assembly 300 driving the transducer assembly 200 to move, so as to avoid winding. That is, by changing the fixed connection mode in which the transducer assembly 200 and the drive shaft assembly 300 cannot rotate relative to each other to a rotatable connection mode around the second axis L2, winding is avoided.

[0063] It should be noted that the ultrasonic transducer 21 being rotatably mounted on the drive shaft assembly 300 around the second axis L2 can be that the whole transducer assembly 200 is rotatably mounted on the drive shaft assembly 300 around the second axis L2, so that the ultrasonic transducer 21 is rotatably mounted on the drive shaft assembly 300 around the second axis L2. The ultrasonic transducer 21 being rotatably mounted on the drive shaft assembly 300 around the second axis L2 can also be that the transducer assembly 200 includes a first mounting bracket 22 on which the ultrasonic transducer 21 is rotatably mounted around the second axis L2, so that the ultrasonic transducer 21 is rotatably mounted on the drive shaft assembly 300 around the second axis L2. The embodiments of the present application do not make any limitations in this regard.

[0064] 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; correspondingly, the transducer assembly 200 being rotatably mounted on the drive shaft assembly 300 around the second axis L2 can also be used to avoid winding when the drive shaft assembly 300 drives the transducer assembly 200 to move and / or rotate. The embodiments of the present application do not make any limitations in this regard.

[0065] Taking the drive shaft assembly 300 being used to drive the transducer assembly 200 to rotate around the first axis L1 as an example, the transducer assembly 200 (such as the ultrasonic transducer 21) is provided with a first electrical connection terminal 211 for connecting an electrical connection wire. 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 around the second axis L2 so that the first electrical connection terminal 211 can always face the same side in the circumferential direction of the first axis L1 during the movement of the transducer assembly 200, so as to avoid winding. That is, it avoids the power cord connected to the transducer assembly 200 from winding around the circumferential direction of the drive shaft assembly 300 or the transducer assembly 200, resulting in winding.

[0066] In some embodiments, the second axis L2 may be the axis of the ultrasonic transducer 21, or the second axis L2 is parallel to the axis of the ultrasonic transducer 21. For example, when the axis of the ultrasonic transducer 21 is inclined with respect to the first axis L1, the second axis L2 may be inclined with respect to the first axis L1, and 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. The embodiments of the present application do not limit this.

[0067] Please continue to refer to Figure 5 , optionally, in order to avoid the power cord connected to the transducer assembly 200 from getting entangled in the second embodiment, the drive shaft assembly 300 has a lead hole 311 extending along the extension direction of the first axis L1, and the electrical connection line connected to the transducer assembly 200 is led out from the lead hole 311 to avoid entanglement during the process of the drive shaft assembly 300 driving the transducer assembly 200 to rotate. That is, during the process of the drive shaft assembly 300 driving the transducer assembly 200 to rotate, it is possible to avoid the power cord connected to the transducer assembly 200 from winding around the outer peripheral side of the drive shaft assembly 300.

[0068] Exemplarily, the skin care device may include a first electrical connection line 23. One end of the first electrical connection line 23 is connected to the first electrical connection terminal 211 of the transducer assembly 200, and the other end is at least partially located in the lead hole 311. The drive shaft assembly 300 may be provided with a second electrical connection terminal 312, and the second electrical connection terminal 312 is electrically connected to the other end of the first electrical connection line 23. The drive shaft assembly 300 further includes an electrical connection structure, and the electrical connection structure may be connected to the circuit board of the skin care device. The second electrical connection terminal 312 may be rotatably and cooperatively electrically connected to the electrical connection structure.

[0069] Optionally, the electrical connection structure may be a socket having a circular and / or annular jack, and the socket is provided inside the lead hole 311 or outside the lead hole 311 and corresponding to the lead hole 311.

[0070] Optionally, the electrical connection structure may be an annular conductive portion 313.

[0071] Specifically, at least a part of the second electrical connection terminal 312 is exposed on the circumferential surface of the drive shaft assembly 300 for electrical connection. The electrical connection structure is an annular conductive portion 313. The annular conductive portion 313 is rotatably sleeved on the drive shaft assembly 300 and slidably abuts against the second electrical connection terminal 312 to form an electrical connection. Further, when the drive 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, and the annular conductive portion 313 may not rotate around the first axis L1, so that other power cords can be connected to the annular conductive portion 313 for power supply.

[0072] Please continue to refer to Figure 6 and Figure 7 , in some embodiments, one end of the drive shaft assembly 300 close to the sound-emitting area 111 is provided with a first support surface 321, and the transducer assembly 200 is mounted on the first support surface 321. The first support surface 321 may be inclined with respect to the first axis L1 so that the transducer assembly 200 is inclined with respect to the first axis L1. Furthermore, the first support surface 321 can provide good support for the inclined transducer assembly 200 to improve 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.

[0073] Of course, the first support surface 321 can also be perpendicular to the first axis L1. For example, the first support surface 321 is perpendicular to the first axis L1, and the transducer assembly 200 is eccentrically arranged on the first support surface 321 so that the ultrasonic focus of the transducer assembly 200 is misaligned with the first axis L1. The embodiments of the present application do not limit this.

[0074] 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 the third axis so that the angle between the transducer assembly 200 and the first support surface 321 is adjustable.

[0075] That is to say, it can be that the distance between the ultrasonic focus of the transducer assembly 200 and the first axis L1 is adjustable, while the angle between the transducer assembly 200 and the first support surface 321 is not adjustable; it can also be that the distance between the ultrasonic focus of the transducer assembly 200 and the first axis L1 is not adjustable, while the angle between the transducer assembly 200 and the first support surface 321 is adjustable; it can also be that the distance between the ultrasonic focus of the transducer assembly 200 and the first axis L1 is adjustable, and the angle between the transducer assembly 200 and the first support surface 321 is adjustable. The embodiments of the present application do not limit this.

[0076] 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 around the first axis L1 can be adjusted, so as to realize the care of a large area or a small area on the skin. 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, so that the ultrasonic focus of the transducer assembly 200 is close to or far from the first axis L1.

[0077] Similarly, when the included angle between the transducer assembly 200 and the first support surface 321 is adjustable, the rotation radius of the ultrasonic focus around the first axis L1 can be adjusted, so as to realize the care of a large area or a small area on the skin.

[0078] In some embodiments, the inclination angle between the first support surface 321 and the first axis L1 is adjustable, so that the included angle between the transducer assembly 200 mounted on the first support surface 321 and the first axis L1 can be adjusted accordingly, and further the rotation radius of the ultrasonic focus around the first axis L1 can be adjusted, and finally the care of a large area or a small area on the skin can be realized.

[0079] In some embodiments, the transducer assembly 200 is rotatably mounted on the first support surface 321 around the second axis L2 to avoid wire entanglement during the process of driving the transducer assembly 200 to rotate by the drive shaft assembly 300.

[0080] For example, as mentioned above, the transducer assembly 200 is provided with a first electrical connection terminal 211 for connecting an electrical connection wire. During the process of driving the transducer assembly 200 to move by the drive shaft assembly 300, the transducer assembly 200 can rotate relative to the drive shaft assembly 300 around the second axis L2 so that the first electrical connection terminal 211 can always face the same side in the circumferential direction of the first axis L1 during the movement of the transducer assembly 200, so as to avoid wire entanglement, that is, to avoid the power cord connected to the transducer assembly 200 from winding around the drive shaft assembly 300 or the circumferential direction of the transducer assembly 200, resulting in wire entanglement.

[0081] In summary, for the above two setting methods of the ultrasonic transducer 21, the ultrasonic transducer 21 is inclined with respect 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 with respect to the first axis L1 so that the ultrasonic focus of the transducer assembly 200 is misaligned with the first axis L1. Both can utilize the above anti-winding scheme, that is: a skin care device, including: a housing 100, the housing 100 is provided with a sound-emitting area 111; a drive shaft assembly 300, the drive shaft assembly 300 is movably arranged in the housing 100; and, a transducer assembly 200, the transducer assembly 200 is installed at one end of the drive 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 drive shaft assembly 300 is rotatably installed 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 for the ultrasonic focus of the transducer assembly 200 to rotate around the first axis L1; the transducer assembly 200 includes an ultrasonic transducer 21, and the ultrasonic transducer 21 is rotatably installed on the drive shaft assembly 300 around the second axis L2 for the transducer assembly 200 to rotate relative to the drive shaft assembly 300 around the second axis L2 during the process of the drive shaft assembly 300 driving the transducer assembly 200 to move, so as to avoid winding. Or, a skin care device, including: a housing 100, the housing 100 is provided with a sound-emitting area 111; a drive shaft assembly 300, the drive shaft assembly 300 is movably arranged in the housing 100; and, a transducer assembly 200, the transducer assembly 200 is installed at one end of the drive 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 drive shaft assembly 300 is rotatably installed 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 for the ultrasonic focus of the transducer assembly 200 to rotate around 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, and 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 the first electrical connection wire 23 is connected to the first electrical connection terminal 211 of the transducer assembly 200, and the other end is at least partially located in the lead hole 311. The drive shaft assembly 300 may be provided with a second electrical connection terminal 312, and the second electrical connection terminal 312 is electrically connected to the other end of the first electrical connection wire 23. The drive shaft assembly 300 further includes an electrical connection structure, the electrical connection structure may be connected to the circuit board of the skin care device, and the second electrical connection terminal 312 may be rotatably and cooperatively electrically connected to the electrical connection structure.

[0082] Exemplarily, 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 around the second axis L2. The second axis L2 is inclined with respect to the first axis L1.

[0083] It can be understood that the axis line of the mounting shaft 322 and / or the axis line of the first mounting hole 2211 can coincide with the second axis L2. Thus, through the rotational fit of the hole and the shaft, the rotational mounting of the transducer assembly 200 can be made more stable and reliable.

[0084] In some embodiments, the transducer assembly 200 includes a bearing 24. The bearing 24 is provided between the mounting shaft 322 and the inner wall of the first mounting hole 2211, so as to reduce the frictional force 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.

[0085] Optionally, the transducer assembly 200 may include a slip ring sleeve 24a. The slip ring sleeve 24a is provided between the mounting shaft 322 and the inner wall of the first mounting hole 2211, so as to reduce the frictional force 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.

[0086] Moreover, compared with the bearing 24, the slip ring sleeve 24a also has the advantage of lower cost. For example, the slip ring sleeve 24a can be a metal part. Of course, the slip ring sleeve 24a can also be made of a plastic material or a ceramic material with a friction coefficient lower than that of the mounting shaft 322, and the embodiments of the present application do not limit this.

[0087] Taking the mounting shaft 322 being provided on the first support surface 321 as an example, the transducer assembly 200 may further include a sliding gasket 25. The slip ring sleeve 24a is provided between the mounting shaft 322 and the inner wall of the first mounting hole 2211. The sliding gasket 25 is sleeved outside the mounting shaft 322. One side of the sliding gasket 25 abuts against the first support surface 321, and the other side abuts against the slip ring sleeve 24a and / or the orifice end surface of the first mounting hole 2211. Thus, the frictional force at the circumferential side surface of the mounting shaft 322 can be reduced through the slip ring sleeve 24a, and the frictional force at the first support surface 321 can be reduced through the sliding gasket 25, so that the transducer assembly 200 can rotate more smoothly.

[0088] The sliding gasket 25 can be a metal part. Of course, the sliding gasket 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 the embodiments of the present application do not limit this.

[0089] In some embodiments, the first support surface 321 may be provided with a structural sunk groove 3211, and the mounting shaft 322 is connected to the bottom wall of the structural sunk groove 3211. The sliding gasket 25 abuts against the end face of the opening of the structural sunk groove 3211 and covers the opening of the structural sunk groove 3211. Then, during the actual manufacturing process, it is possible to avoid the formation of a protrusion at the connection between the mounting shaft 322 and the first support surface 321 from abutting against the sliding gasket 25, thereby avoiding the sliding gasket 25 from warping relative to the first support surface 321, and further enabling the sliding gasket 25 to be stably mounted on the first support surface 321.

[0090] In some embodiments, the sliding ring sleeve 24a may protrude from the end face of the opening 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 ring sleeve 24a, thereby reducing the contact area to further reduce the friction force at the first support surface 321.

[0091] In some embodiments, the transducer assembly 200 further includes a first fastener 26, and the first fastener 26 includes a connecting portion 261 and a pressing portion 262. The sliding ring sleeve 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 sleeve 24a. A sliding ring groove is further formed between the pressing portion 262 and the first support surface 321. The hole wall of the first mounting hole 2211 is rotatably limited outside the sliding ring groove. That is, the hole wall of the first mounting hole 2211 may be partially located within the sliding ring groove to form a limit, and partially located outside the sliding ring groove.

[0092] 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 can be fixed to the drive shaft assembly 300 through the first mounting bracket 22.

[0093] For example, the mounting shaft 322 is disposed on the first support surface 321, and the first mounting bracket 22 has a first side surface 2212 disposed opposite to the first support surface 321, that is, the first side surface 2212 faces the first support surface 321. A side protrusion 2213 is provided on the first side surface 2212, and the first mounting hole 2211 is provided in the side protrusion 2213 and penetrates through the first mounting bracket 22. For example, the side protrusion 2213 may be a ring protrusion surrounding the mounting shaft 322. Thus, the ultrasonic transducer 21 can be mounted by the rotational cooperation between the mounting shaft 322 and the side protrusion 2213.

[0094] 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 disposed opposite to the first support surface 321 and a second side surface 2214 disposed opposite to the first side surface 2212. The ultrasonic transducer 21 is mounted on the second side surface 2214.

[0095] 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 penetrating through the first mounting bracket 22. The mounting shaft 322 is rotatably mounted in the first mounting hole 2211 along the second axis L2 inclined to the first axis L1, so that the ultrasonic transducer 21 is rotatably mounted on the first support surface 321. The transducer assembly 200 further includes a first fastener 26. The first fastener 26 is fixedly connected to the mounting shaft 322 from the second side surface 2214 to limit the movement of the first mounting bracket 22 along the second axis L2 away from the first support surface 321. Thus, a relatively rotatable connection between the transducer bracket and the mounting shaft 322 can be achieved through the first fastener 26 to prevent the transducer assembly 200 from falling off the mounting shaft 322.

[0096] In some embodiments, the second side surface 2214 is a bearing surface. The bearing surface is provided with a receiving sink 2215. The ultrasonic transducer 21 is disposed in the receiving sink 2215. Thus, the receiving sink 2215 can provide a good positioning effect on the ultrasonic transducer 21.

[0097] In some embodiments, the second side surface 2214 is a bearing surface. The bearing surface is provided with an avoidance sink 2216. There is a gap between the bottom of the avoidance sink 2216 and the ultrasonic transducer 21. Thus, a space for mounting the first fastener 26 can be formed by the avoidance sink 2216.

[0098] For example, the avoidance sink 2216 is formed on the bottom wall of the receiving sink 2215. One end of the first fastener 26 away from the first support surface 321 is received in the avoidance sink 2216 and is spaced from the ultrasonic transducer 21. Thus, during the rotation of the first mounting bracket 22 relative to the mounting shaft 322 about the second axis L2, the ultrasonic transducer 21 is not easily in contact with the first fastener 26 and is not worn.

[0099] In some embodiments, the first mounting bracket 22 includes a bearing portion 221 and a first engaging portion 222. The bearing 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 is snap-connected to the ultrasonic transducer 21 to fix the ultrasonic transducer 21 to the bearing portion 221.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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 .

[0107] 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 .

[0108] In some embodiments, the wire routing notch 2217 is disposed on the circumferential surface of the first mounting bracket 22 and penetrates through the first side surface 2212 and the second side surface 2214 to facilitate the wire routing of the ultrasonic transducer 21.

[0109] 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. A first support surface 321 is provided at one end of the transmission member 32 facing away from the transmission shaft 31. Thus, a relatively large first support surface 321 can be formed by one transmission member 32 to increase the contact area between the transmission shaft assembly 300 and the transducer assembly 200, that is, the sealing area can be increased, thereby improving the stability and reliability of the installation of the transducer assembly 200.

[0110] For example, one end of the transmission shaft 31 close to the transmission member 32 is disposed inside the transmission member 32 to realize the connection between the transmission member 32 and the transmission shaft 31; alternatively, a connection convex portion is provided on the side of the transmission member 32 facing away from the first support surface 321, and the connection convex portion is connected to the transmission shaft 31, such as by screwing; alternatively, a connection plug convex is provided on the side of the transmission member 32 facing away from the first support surface 321, a jack is provided at the free end of the transmission member 32, and the connection plug convex is inserted into the jack by interference fit or screwing.

[0111] In some embodiments, the transmission shaft 31 is inserted into the transmission member 32 along the direction of the first axis L1 to realize the connection and fixation between the transmission shaft 31 and the transmission member 32. And to ensure the reliability of the installation of the transmission shaft 31, the hole position of the transmission member 32 for installing the transmission shaft 31 and the transmission shaft 31 are in a tight fit, resulting in difficulty in inserting the transmission shaft 31 deep enough into the transmission member 32 during the assembly process.

[0112] 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 avoidance groove 324. The avoidance groove 324 is located on the side of the limiting groove 323 away from the first support surface 321. Both the limiting groove 323 and the avoidance groove 324 penetrate through the outer surface of the transmission member 32 toward one side to form an installation opening 325. The avoidance groove 324 also penetrates through the outer surface of the transmission member 32 toward the side away from the limiting groove 323. One end of the transmission shaft 31 forms a limiting convex portion 314. One end of the transmission shaft 31 is disposed inside the transmission member 32 through the installation opening 325, and the limiting convex portion 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.

[0113] Then, during the actual assembly process, the transmission shaft 31 can be inserted into the transmission member 32 from the installation opening 325 by moving it radially, and this side-insert assembly method has the advantage of easy assembly.

[0114] In this way, by limiting the limiting convex portion 314 within the limiting groove 323, the driving connection between the transmission shaft 31 and the transmission member 32 can be achieved through the cooperation between the limiting convex portion 314 and the limiting groove 323. When the transmission shaft 31 drives the transducer assembly 200 to move through the transmission member 32, the transmission of force can be achieved through the cooperation between the limiting convex portion 314 and the limiting groove 323, thereby ensuring the connection stability between the transmission member 32 and the transmission shaft 31, and 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.

[0115] Optionally, the limiting convex portion 314 and the limiting groove 323 are in interference fit at the limiting position.

[0116] Then, during the actual assembly process, the transmission shaft 31 can be inserted into the transmission member 32 from the installation port 325 by moving it radially to complete the installation. This side-insertion assembly method has the advantage of being easy to assemble.

[0117] In this way, by limiting the limiting convex portion 314 within the limiting groove 323, the driving connection between the transmission shaft 31 and the transmission member 32 can be achieved through the cooperation between the limiting convex portion 314 and the limiting groove 323. When the transmission shaft 31 drives the transducer assembly 200 to move through the transmission member 32, the transmission of force can be achieved through the cooperation between the limiting convex portion 314 and the limiting groove 323, thereby ensuring the connection stability between the transmission member 32 and the transmission shaft 31, and 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.

[0118] Specifically, when the transducer assembly 200 is driven by the transmission shaft assembly 300 to move in the axial direction of the transmission shaft 31 to adjust the acting depth of the transducer assembly 200, since the limiting convex portion 314 and the limiting groove 323 can achieve an assembly with 0 error (or interference fit), the transmission accuracy in the axial direction of the transmission shaft 31 can be ensured and improved.

[0119] In some embodiments, the transmission member 32 further has an installation surface 326 and a connection ring surface 327 connecting the installation surface 326 and the first support surface 321. The installation port 325 is formed on the connection ring surface 327.

[0120] For example, the limiting groove 323 extends into the transmission member 32 from the connection ring surface 327, the avoidance groove 324 penetrates from the installation surface 326 to the limiting groove 323, and the avoidance groove 324 also penetrates the connection 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 the installation port 325.

[0121] Therefore, during the assembly process, the limiting convex portion 314 of the transmission shaft 31 can easily slide into the limiting groove 323 from the installation opening 325, and the portion of the transmission shaft 31 connected to the side of the limiting convex portion 314 away from the sound emitting area 111 can slide into the avoidance groove 324 from the side notch of the avoidance groove 324, thereby completing the assembly of the transmission shaft 31.

[0122] In some embodiments, the width of the limiting groove 323 is greater than the width of the avoidance groove 324. Correspondingly, the outer diameter of the limiting convex portion 314 can be greater than the width of the avoidance groove 324 to prevent the limiting convex portion 314 from falling off from the avoidance groove 324.

[0123] In some embodiments, the height of the limiting groove 323 is less than the height of the avoidance groove 324. Thereby, the connection and cooperation area between the transmission member 32 and the transmission shaft 31 can be increased to improve the installation stability and reliability. And the structural strength can be improved.

[0124] The transmission shaft 31 can be formed with a second plane 317 to abut against the inner wall of the avoidance groove 324. Thus, when the transmission shaft assembly 300 is used to drive the transducer assembly 200 to rotate around the first axis L1, the second plane 317 can form a driving surface for the transmission shaft 31 to drive the transmission member 32 to rotate around the first axis L1. At this time, the height of the avoidance groove 324 is greater than the height of the limiting groove 323, so that the contact area between the second plane 317 and the transmission member 32 is relatively large, thereby improving the anti-torque performance at the connection between the transmission member 32 and the transmission shaft 31.

[0125] Optionally, there are two second planes 317, which are respectively arranged on both sides in the circumferential direction of the transmission shaft 31.

[0126] 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.

[0127] In some embodiments, a first guiding structure 3231 is provided at the notch of the limiting groove 323, thereby facilitating the insertion of the limiting convex portion 314 into the limiting groove 323.

[0128] For example, the first guiding structure 3231 includes a third chamfer. The third chamfer is connected between the inner wall of the limiting groove 323 and the connecting annular surface 327, so that the first guiding structure 3231 has the advantage of being easy to manufacture.

[0129] In some embodiments, a second guiding structure 3241 is provided at the side notch, thereby facilitating the portion of the transmission shaft 31 connected to the side of the limiting convex portion 314 away from the sound emitting area 111 to slide into the avoidance groove 324 from the side notch of the avoidance groove 324.

[0130] For example, the second guiding structure 3241 includes a fourth chamfer that is connected between the inner wall of the avoidance groove 324 and the connection ring surface 327, so that the second guiding structure 3241 has the advantage of being easy to manufacture.

[0131] In some embodiments, the transmission member 32 is further provided with a fifth chamfer 3242 that is connected between the inner wall of the avoidance groove 324, the mounting surface 326, and the connection ring surface 327. Thus, during the process of inserting the transmission shaft 31 from the mounting opening 325, it is possible to prevent the portion of the transmission shaft 31 protruding from one side of the mounting surface 326 from interfering with the connection ring surface 327, so that the transmission member 32 has the advantage of being easy to install.

[0132] 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 convex portion 314 at one end of the transmission shaft 31.

[0133] That is, a limiting convex portion 314 is formed on the side of the groove side wall of the first annular groove 318 close to the sound-emitting region 111, and the bottom wall of the first annular groove 318 is installed in the avoidance groove 324. Moreover, a second plane 317 may be formed on the bottom wall of the first annular groove 318.

[0134] In some embodiments, the connection ring surface 327 is a cylindrical surface.

[0135] In some embodiments, the mounting surface 326 and the first support surface 321 are inclined with respect to each other so that the widths of at least some regions in the circumferential direction of the connection ring surface 327 are different. Among them, the mounting opening 325 is provided at the position where the width of the connection ring surface 327 is relatively narrow. Thus, by avoiding opening the mounting hole at the position where the width of the connection ring surface 327 is relatively wide, the structural strength of the transmission member 32 can be improved, and further the stability and reliability of the connection between the transmission shaft 31 and the transmission member 32 can be ensured.

[0136] 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 connect and fix the transmission shaft 31 and the transmission member 32. Further, the stability and reliability of the connection between the transmission shaft 31 and the transmission member 32 can be improved through the second fastener 33.

[0137] For example, a first through hole 3271 is provided at the position of the connection ring surface 327 corresponding to the avoidance groove 324. The second fastener 33 passes through the first through hole 3271 to connect with the transmission shaft 31. Then, the second fastener 33 can further limit the transmission member 32 from rotating relative to the transmission shaft 31 about the first axis L1.

[0138] In some embodiments, the second fastener 33 extends radially along the transmission shaft 31 and is respectively inserted through the transmission shaft 31 and the transmission member 32 to lock the transmission member 32 and the transmission shaft 31. Then, the second fastener 33 can also limit the rotation of the transmission member 32 relative to the transmission shaft 31 about the first axis L1.

[0139] In some embodiments, the second fastener 33 is a dowel pin. It can be understood that, compared with using a screw for the second fastener 33, the dowel pin has the advantage of high installation accuracy. Of course, in some other embodiments, the second fastener 33 can also be a screw, a rivet, etc., and the embodiments of the present application do not limit this.

[0140] In some embodiments, other methods can also be used to connect the transmission shaft 31 and the transmission member 32. For example, an assembly hole can be provided on the mounting surface 326 of the transmission member 32. The assembly hole can be selected as a non-circular hole. One end of the transmission shaft 31 is inserted into the assembly hole, and the transmission shaft 31 and the transmission member 32 are connected and fixed by the second fastener 33 passing through the connecting ring surface 327.

[0141] Please continue to refer to Figure 9 , in some embodiments, the skin care device further includes a medium housing 500. The medium housing 500 is at least partially disposed within the outer housing 100. A medium chamber 51 is formed between the medium housing 500 or between the medium housing 500 and the outer housing 100. The transducer assembly 200 is disposed within the medium chamber 51, and the medium chamber 51 is used to store the ultrasonic transmission medium. Thus, the ultrasonic transmission medium can reduce the loss during the ultrasonic wave generated by the transducer assembly 200 entering the skin to be treated, thereby improving the effect of skin care.

[0142] It can be understood that, on the one hand, the outer housing 100 can form a part of the inner wall of the medium chamber 51, or the outer housing 100 may not form the inner wall of the medium chamber 51. The embodiments of the present application do not limit this. On the other hand, the medium housing 500 and the outer housing 100 can be integrally formed or separately formed. The embodiments of the present application also do not limit this.

[0143] In some embodiments, a pressure regulating component 600a is provided at the medium chamber 51, and the pressure regulating component 600a is used to regulate the pressure inside the medium chamber 51. For example, when the ultrasonic transmission medium is a liquid, the ultrasonic transducer 21 generates heat during operation, and the corresponding ultrasonic transmission medium will expand and contract thermally, resulting in dynamic changes in the pressure inside the medium chamber 51. At this time, the pressure regulating component 600a can adaptively regulate the pressure inside the medium chamber 51 to avoid damage to the sound transmission film at the medium chamber 51 and / or the transducer assembly 200 and / or the sound output area 111 due to pressure. Moreover, during the movement of the transducer assembly 200, it will also cause dynamic changes in the pressure inside the medium chamber 51. At this time, the pressure regulating component 600a can adaptively regulate the pressure inside the medium chamber 51.

[0144] The pressure regulating component 600a may include at least one of a pressure regulating valve and an elastic deformation component 600, and the embodiments of the present application do not limit this.

[0145] In some embodiments, the elastic deformation component 600 is at least partially disposed inside the medium chamber 51. The elastic deformation component 600 is provided with a deformation cavity 61. The deformation cavity 61 is at least partially located inside the medium chamber 51, and the deformation cavity 61 also has a communication opening 611 communicating with the outside of the medium chamber 51. Thus, when the pressure inside the medium chamber 51 increases, the elastic deformation component 600 can be compressed, so that the deformation cavity 61 becomes smaller, and the air inside the deformation cavity 61 is discharged from the communication opening 611.

[0146] For example, please refer to Figure 9 and Figure 10 , the elastic deformation component 600 may include a first top wall 62 and a second annular wall 63. The first top wall 62 is disposed inside the medium chamber 51. The second annular wall 63 is at least partially disposed inside the medium chamber 51. The second annular wall 63 surrounds the first top wall 62 to form a deformation cavity 61 between the first top wall 62 and the second annular wall 63. The communication opening 611 is located at one end of the deformation cavity 61 facing away from the first top wall 62.

[0147] It can be understood that during the operation of the skin care device, when the pressure inside the medium chamber 51 is too high, the elastic deformation component 600 is prone to excessive deformation, resulting in the elastic deformation component 600 turning out of the medium chamber 51, and further causing the failure of the elastic deformation component 600.

[0148] Based on this, in some embodiments, the skin care device may further include a first limiting member 64, and at least a part of the first limiting member 64 is disposed at the communication opening 611 to limit the deformation of the side of the elastic deformation member 600 away from the communication opening 611 to the communication opening 611. Further, it is avoided that the elastic deformation member 600 turns outwards to the outside of the medium chamber 51, and finally the reliability and stability of the elastic deformation member 600 can be improved to improve the pressure adjustment effect of the elastic deformation member 600.

[0149] For example, the first limiting member 64 may be used to limit the deformation of the first top wall 62 to the communication opening 611, thereby preventing the elastic deformation member 600 from turning outwards to the outside of the medium chamber 51. It should be noted that the first limiting member 64 may cover the communication opening 611, or one end of the first limiting member 64 may be located in the deformation cavity 61 to limit the deformation of the first top wall 62 to the communication opening 611. That is, the elastic deformation member 600 may or may not be inserted into the deformation cavity 61, and the embodiments of the present application do not make any limitations thereto.

[0150] Exemplarily, the first limiting member 64 is inserted into the communication opening 611, and a pressure relief through hole 641 is formed between the first limiting member 64 and / or the first limiting member 64 and the second annular wall 63, and the pressure relief through hole 641 communicates with the deformation cavity 61. Thus, an independent element can be used to be inserted into the communication opening 611 to form the first limiting member 64, so that the first limiting member 64 has the advantage of easy assembly and is beneficial to sealing the medium chamber 51. At the same time, the deformation cavity 61 is also communicated with the outside through the pressure relief through hole 641 to facilitate the deformation of the elastic deformation member 600.

[0151] In some embodiments, the number of the pressure relief through holes 641 is multiple, and the multiple pressure relief through holes 641 are arranged at intervals along the circumferential direction of the medium chamber 51, so that the pressure adjustment effect in the deformation cavity 61 can be improved through the multiple pressure relief through holes 641.

[0152] In some embodiments, the shape of the first limiting member 64 is adapted to the shape of the communication opening 611. For example, the first limiting member 64 is arc-shaped and extends along the circumferential direction of the medium chamber 51; correspondingly, the elastic deformation member 600 as a whole also has an arc-shaped structure extending along the circumferential direction of the medium chamber 51. Then, it is possible to avoid the first limiting member 64 being disposed in the middle of the medium chamber 51 to interfere with the transducer assembly 200.

[0153] It should be noted that since the elastic deformation member 600 as a whole also has an arc-shaped structure extending along the circumferential direction of the medium chamber 51, on the one hand, the elastic deformation ability and the support performance of the elastic deformation member 600 can be increased to prevent the elastic deformation member 600 from deforming easily; on the other hand, it can also be avoided that the elastic deformation member 600 does not deform.

[0154] It can also be understood that, as mentioned above, the transducer assembly 200 can be inclined. Then, the elastic deformation member 600 can be located on the outer peripheral side of the end of the transducer assembly 200 away from the sound output area 111. Thus, by means of the inclined setting, a space can be reserved at the end of the transducer assembly 200 away from the sound output area 111 for installing the elastic deformation member 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.

[0155] For example, please refer to Figure 10 and Figure 26 , the elastic deformation member 600 is located on the outer peripheral side 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. Both the first side wall 631 and the second side wall 632 are arc-shaped sheets and surround the outer peripheral side of the transducer assembly 200. Among them, 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.

[0156] The second annular wall 63 further includes two third side walls 633 provided 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.

[0157] In some examples, the third side wall 633 is arranged in a flat plate shape. 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 support performance of the elastic deformation member 600 can be further improved by using the edges.

[0158] In other examples, the third side wall 633 can also be arranged in an arc shape. 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 support performance of the elastic deformation member 600 can also be further improved.

[0159] In some embodiments, a first stop edge 642 is provided at the end of the first limiting member 64 outside the deformation cavity 61. The first stop edge 642 abuts against the opening end face of the communication opening 611 to limit the movement of the first limiting member 64 in the direction of inserting into the deformation cavity 61. Then, during the actual installation process, the first limiting member 64 can be inserted into the deformation cavity 61 from the end away from the first stop edge 642 until the first stop edge 642 abuts against the opening end face of the communication opening 611, so that the first limiting member 64 has the advantages of easy installation and high installation accuracy.

[0160] 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.

[0161] 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.

[0162] Correspondingly, the first rib 642 can abut against the second rib 65 , which can facilitate positioning during assembly and reduce assembly difficulty.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] 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.

[0167] 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 deformation component 600 can first deform from the second annular wall 63, thereby preventing the first top wall 62 from deforming to the communication opening 611, and further avoiding the elastic deformation component 600 from turning outwards to the outside of the medium chamber 51. Ultimately, the reliability and stability of the elastic deformation component 600 can be improved to enhance the pressure regulation effect of the elastic deformation component 600.

[0168] Exemplarily, the thickness of the second annular wall 63 is 0.4 mm - 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, and the embodiments of the present application do not limit this. 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, and the embodiments of the present application do not limit this. Thus, it can be avoided that the first top wall 62 and the second annular wall 63 are too thick, resulting in the elastic deformation component 600 being not easy to deform, and it can also be avoided that the first top wall 62 and the second annular wall 63 are too thin, resulting in the elastic deformation component 600 being too easy to deform; it can also ensure that the thickness of the second annular wall 63 is less than the thickness of the first annular wall 532.

[0169] In some embodiments, the first top wall 62 is a flat plate-like structure. Thus, compared with the first top wall 62 being a corrugated plate-like structure, the strength of the first top wall 62 can be improved to reduce the probability of the elastic deformation component 600 turning outwards to the outside of the medium chamber 51.

[0170] In some embodiments, the surface of at least one of the second annular wall 63 and the first top wall 62 is a smooth surface. Then, it can also be understood that the surface of at least one of the second annular wall 63 and the first top wall 62 has no wrinkles. Thus, the strength of the corresponding second annular wall 63 and / or the first top wall 62 can be improved to a certain extent, and further the deformation speed of the elastic deformation component 600 can be made slower to prevent the ultrasonic conduction medium in the medium chamber 51 from generating violent oscillations, thereby improving the stability and reliability of the skin care device.

[0171] In some embodiments, the Shore hardness coefficient of the elastic deformation component 600 is 40 - 60 HR. Thus, the strength of the elastic deformation component 600 can be improved to a certain extent, and further the deformation speed of the elastic deformation component 600 can be made slower to prevent the ultrasonic conduction medium in the medium chamber 51 from generating violent oscillations, thereby improving the stability and reliability of the skin care device.

[0172] Exemplarily, 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, and the embodiments of the present application do not limit this.

[0173] In some embodiments, the elastic deformation component 600 is a rubber part or a silica gel part. Of course, the elastic deformation component 600 can also be made of any other deformable material, and the embodiments of the present application do not limit this.

[0174] It can also be understood that, as mentioned above, the drive shaft assembly 300 may include a drive shaft 31 passing through the medium housing 500. The drive shaft 31 can move along the first axis L1 to drive the transducer assembly 200 to move along the first axis L1, so as to approach or move away from the sound-emitting area 111.

[0175] For example, the drive shaft assembly 300 includes a transmission member 32 and a drive shaft 31. One end of the drive shaft 31 extends into the medium chamber 51, and the transmission member 32 is installed at one end of the drive shaft 31 extending into the medium chamber 51. A first support surface 321 is provided on a side of the transmission member 32 away from the drive shaft 31. The transducer assembly 200 is installed on the first support surface 321.

[0176] Then, when the depth of insertion of the drive shaft 31 into the medium housing 500 changes, the pressure in the medium chamber 51 also changes accordingly. At this time, the pressure regulating component 600a (or the elastic deformation component 600) can effectively regulate the pressure in the medium chamber 51.

[0177] Exemplarily, the skin care device is configured to have at least two preset depth modes. In different depth modes, the depth of insertion of the drive shaft assembly 300 into the medium chamber 51 is different, so that the volume of the part of the drive shaft assembly 300 inserted into the medium chamber 51 is different.

[0178] In all depth modes, the difference between the maximum volume and the minimum volume of the drive 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 large enough deformation cavity 61.

[0179] In some embodiments, the ratio of V1 to V2 can be 3-10, so as to ensure that the elastic deformation component 600 has a large enough deformation cavity 61. For example, the ratio of V1 to V2 can 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.

[0180] In some embodiments, the ratio of V1 to V2 is 5.5 - 6.5. Thus, it can avoid the situation that the deformation cavity 61 is too small, resulting in insufficient space for the elastic deformation component 600 to be compressed when the transmission shaft 31 is inserted to the maximum depth of the medium chamber 51 and the ultrasonic transmission medium expands due to heat. At the same time, it can also avoid the situation that the deformation cavity 61 is too large, occupying too much space in the medium chamber 51 and having insufficient support performance.

[0181] 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.

[0182] In some embodiments, the first limiting member 64 can be arranged on the second mounting bracket 41, so that the second mounting bracket 41 can be reused to form the first limiting member 64, reducing the components of the skin care device and facilitating the assembly of the skin care device.

[0183] As Figure 9 shown, in some embodiments, a window 521 is provided on the chamber wall of the medium chamber 51 at the sound-emitting area 111. The skin care device further includes a sound-transmitting membrane 54 covering the window 521 to seal the window 521. The ultrasonic focus of the transducer assembly 200 passes through the window 521 for irradiating the skin to be treated. Thus, by adjusting the pressure in the medium chamber 51 through the pressure regulating component 600a, the rupture of the sound-transmitting membrane 54 can also be avoided.

[0184] In some embodiments, the sound-transmitting membrane 54 is only fixed to the opening end face of the window 521, resulting in relatively low installation reliability of the sound-transmitting membrane 54, and further affecting the sealing effect of the medium chamber 51.

[0185] Please refer to Figure 9 and Figure 11 together. Based on this, in some embodiments, the side wall (i.e., the chamber wall) forming the medium chamber 51 includes a second top wall 522 and a third annular wall 523 surrounding the second top wall 522. The second top wall 522 is located on the side of the transducer assembly 200 facing the sound-emitting area 111. The second top wall 522 is provided with a window 521, and the window 521 is a through hole facing the transducer assembly 200. Among them, the sound-transmitting 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 circumferential direction of the sealing portion 541, and 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.

[0186] Therefore, the sound transmission membrane 54 forms a seal with the second top wall 522 through the sealing portion 541, and the connection area of the sound transmission membrane 54 is increased through the plurality of fixing portions 542, so that the connection and cooperation area of the sound transmission membrane 54 can be increased, thereby improving the sealing effect of the sound transmission membrane 54; on this basis, in the actual manufacturing process, a plurality of sheet-like structures can be cut out on the circumferential side of the sealing portion 541 and then bent to form the fixing portions 542, so that the sound transmission membrane 54 has the advantage of being easy to prepare. It can be seen that the sound transmission membrane 54 of the embodiment of the present application can improve the sealing effect at the window 521 of the medium chamber 51 on the basis of the actual working requirement of being easy to prepare.

[0187] In some embodiments, at least one fixing portion 542 overlaps with an adjacent fixing portion 542 along one end edge in the circumferential direction of the third annular wall 523. Thus, all parts in the circumferential direction of the third annular wall 523 can be connected and fixed to the fixing portion 542 as much as possible to improve the stability and reliability of the connection.

[0188] 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 fusion 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 fusion welding.

[0189] In some embodiments, both the second top wall 522 and the sealing portion 541 are circular, and 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 circumferential side of the second top wall 522.

[0190] 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, an overflow glue 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 the excess glue extruded between the second top wall 522 and the sealing portion 541, so that the sealing portion 541 is bonded to the second top wall 522 more flatly to improve the stability and reliability of the bonding.

[0191] Exemplarily, the difference between the outer diameter of the second top wall 522 and the outer diameter of the sealing portion 541 can be 1 millimeter to 2 millimeters.

[0192] In some embodiments, the sealing portion 541 is located on the side of the second top wall 522 facing 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.

[0193] In some embodiments, the inner diameter of the inner peripheral side edge of the ink layer 543 is smaller than the inner diameter of the window 521; and / or, the inner peripheral side 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 provide a better shielding effect on the outer edge of the inner wall of the window 521, so as to improve the aesthetic appearance of the skin care device.

[0194] In some embodiments, the sealing grade of the sound-transmitting membrane 54 and the second top wall 522 is IP68, so that the sealing at the sound-transmitting membrane 54 is more reliable.

[0195] In some embodiments, the sound output area 111 includes a first sound output hole 1111. The medium 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 output hole 1111, and the fixing portion 542 is fixed between the hole wall of the first sound output hole 1111 and the third annular wall 523. Thus, the fixing portion 542 can be clamped by the hole wall of the first sound output hole 1111 and the third annular wall 523 to improve the connection stability of the fixing portion 542.

[0196] In some embodiments, there is a 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 can also improve the connection stability of the fixing portion 542.

[0197] 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 to form a medium chamber 51, so that the formation of the medium chamber 51 is more convenient.

[0198] Exemplarily, 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.

[0199] It can also be understood that during the process of the driving assembly 400 driving the transducer assembly 200 to move, the ultrasonic transducer 21 is prone to collision during the moving process.

[0200] Please refer to Figure 9 and Figure 12 , based on this, in some embodiments, a window 521 located at the sound output area 111 is further provided on the side wall (i.e., the chamber wall) forming the medium chamber 51. The window 521 is a through hole facing the transducer assembly 200, and a first chamfer 5211 is provided at one end of the inner side wall of the window 521 close to the transducer assembly 200.

[0201] It can be understood that, for the convenience of the ultrasonic waves of the transducer assembly 200 to penetrate into the skin to be treated and to reduce losses, the transducer assembly 200 is usually arranged adjacent to the window 521; therefore, a first chamfer 5211 is provided on the inner side wall of the window 521. On the one hand, it can prevent the transducer assembly 200 from colliding with the inner side wall of the window 521 during movement, and on the other hand, it is also beneficial to the miniaturization design.

[0202] In some embodiments, the transducer assembly 200 includes an ultrasonic transducer 21 facing the window 521, and a second chamfer 212 is provided at one end of the circumferential surface of the ultrasonic transducer 21 close to the window 521. Thus, the probability of collision between the end of the circumferential surface of the ultrasonic transducer 21 close to the window 521 and the window 521 can be reduced.

[0203] In some embodiments, along the central axis of the window 521, at least a part of the orthographic projection of the second chamfer 212 is located within the orthographic projection of the first chamfer 5211. Therefore, the focused ultrasound generated by the ultrasonic transducer 21 can be emitted from the window 521 as much as possible to improve the skin care effect. Correspondingly, it is more necessary for the first chamfer 5211 and the second chamfer 212 to reduce the probability of collision between the transducer assembly 200 and the window 521 during movement.

[0204] It should be noted that the central axis of the window 521 can coincide with the first axis L1, or intersect or be parallel. The embodiments of the present application do not limit this.

[0205] In some embodiments, the first chamfer 5211 is a straight chamfer to form a first chamfer surface, and the angle between the first chamfer surface and the central axis of the window 521 is 10 degrees to 40 degrees, thereby reducing the probability of collision between the transducer assembly 200 and the window 521 during movement. For example, the angle between the first chamfer 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. The embodiments of the present application do not limit this.

[0206] In some embodiments, the second chamfer 212 is a straight chamfer to form a second chamfer surface, and the angle between the second chamfer surface and the central axis of the transducer assembly 200 is 10 degrees to 40 degrees, thereby reducing the probability of collision between the transducer assembly 200 and the window 521 during movement. For example, the angle between the second chamfer 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. The embodiments of the present application do not limit this.

[0207] In some embodiments, the housing 100 includes an abutting section 112 and a transition section 113. The abutting section 112 is connected to one end of the transition section 113 along the length direction of the housing 100. The abutting section 112 is columnar, and a working area 111a is provided on the end face of the abutting section 112 facing away from the transition section 113. The transition section 113 is conical; along the direction approaching the abutting section 112, the cross-sectional area of the transition section 113 is set to decrease.

[0208] Thus, through the gradual tapering of the transition section 113, the cross-sectional area of the abutting end can be made smaller, so as to more accurately fit the working area 111a on the abutting section 112 to the skin to be treated; at the same time, since the transition section 113 is conical, the transition section 113 has less obstruction to the user's line of sight.

[0209] In some embodiments, along the length direction of the housing 100, the length of the abutting section 112 is 5 to 15 millimeters. For example, along the length direction of the housing 100, the length of the abutting section 112 is 5 millimeters, 5.5 millimeters, 6.5 millimeters, 7 millimeters, 8.9 millimeters, 9.44 millimeters, 10 millimeters, 11 millimeters, 12.3 millimeters, 13 millimeters, 14.55 millimeters or 15 millimeters, and the embodiments of the present application do not limit this. Thus, it is possible to avoid the situation where the abutting section 112 is too long, resulting in too small an internal space at the end of the housing where the abutting section 112 is provided, and it is impossible to arrange the skin care component 200a, the transmission shaft component 300, the drive component 400, etc.

[0210] In some embodiments, along the length direction of the housing 100, the length of the transition section 113 is 5 to 15 millimeters. For example, along the length direction of the housing 100, the length of the transition section 113 is 5 millimeters, 5.5 millimeters, 6.5 millimeters, 7 millimeters, 8.9 millimeters, 9.44 millimeters, 10 millimeters, 11 millimeters, 12.3 millimeters, 13 millimeters, 14.55 millimeters or 15 millimeters, and the embodiments of the present application do not limit this. Thus, it is possible to avoid the situation where the transition section 113 is too long, resulting in too small an internal space at the end of the housing where the transition section 113 is provided, and it is impossible to arrange the skin care component 200a, the transmission shaft component 300, the drive component 400, etc.

[0211] 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 can be substantially the same.

[0212] In some embodiments, the medium 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 medium chamber 51 is smaller, and thus the first chamfer 5211 and the second chamfer 212 are more needed to reduce the probability of collision between the transducer assembly 200 and the window 521 during the movement of the transducer assembly 200.

[0213] In some embodiments, the driving assembly 400 includes at least one of a first driving assembly and a second driving assembly. The first driving assembly is in transmission connection with the transducer assembly 200 to drive the transducer assembly 200 to move along the first axis L1, and the second driving assembly is in transmission connection with the transducer assembly 200 to drive the ultrasonic focus of the transducer assembly 200 to rotate around the first axis L1. Wherein, 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 avoid the collision between the transducer assembly 200 and the inner wall of the window 521 when the first driving assembly and / or the second driving assembly drives the transducer assembly 200 to move.

[0214] In some embodiments, the window 521 may be formed by the medium housing 500. For example, the sound emitting area 111 includes a first sound emitting hole 1111 provided in the outer housing 100. The medium housing 500 passes through the first sound emitting hole 1111. A window 521 is provided on one side of the medium housing 500 located in the sound emitting area 111. The medium housing 500 further includes a sound transmitting film 54, and the sound transmitting film 54 covers the window 521 to seal the window 521. Of course, in some embodiments, the outer housing 100 may also form the window 521, and the embodiments of the present application do not limit this.

[0215] As mentioned above, in some embodiments, the medium housing 500 may include a first housing 52 and a second housing 53. However, liquid leakage is likely to occur between the first housing 52 and the second housing 53.

[0216] Based on this, in some embodiments, the medium 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 to form a medium chamber 51 between the second bottom wall 531, the first annular wall 532 and the first housing 52. The first sealing ring 55 is clamped between the inner wall of the first sealing groove 524 and the first annular wall 532, and the first sealing ring 55 extends at least from the inner peripheral side of the first annular wall 532 to the outer peripheral side of the first annular wall 532 to seal the connection between the first housing 52 and the second housing 53.

[0217] Then, since the first sealing ring 55 extends at least from the inner circumferential side of the first annular wall 532 to the outer circumferential side 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.

[0218] In some embodiments, the depth of insertion of the first annular wall 532 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 insertion of the first annular wall 532 into the first sealing groove 524 is relatively large, facilitating an increase in the sealing area of the first sealing ring 55.

[0219] 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 annular wall 532 inserted into the first sealing groove 524. Thus, by increasing the sealing area of the first sealing ring 55, the sealing effect of the first sealing ring 55 can be improved.

[0220] 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 the thickness of the second sub-annular wall 5322. Thereby, the structural strength at the second sub-annular wall 5322 can be improved.

[0221] Please also refer to Figure 9 、 Figure 12 and Figure 13 , in some embodiments, a first clamping protrusion 525 is provided on the outer circumferential surface of the second sub-annular wall 5322, a first snap 533 is provided on the first housing 52, a first locking hole is provided on the first clamping protrusion 525, and the first snap 533 is clamped in the first locking hole. Thus, the connection stability at the joint of the first housing 52 and the second housing 53 can be increased through the first snap 533 to improve the sealing effect.

[0222] The number of the first snaps 533 can be multiple, and the multiple first snaps 533 are arranged at intervals in the circumferential direction of the second sub-annular wall 5322. Thus, the connection stability at the joint of the first housing 52 and the second housing 53 can be improved through the multiple first snaps 533 to improve the sealing effect.

[0223] In some embodiments, a screwing portion 534 is provided on the outer circumferential side of the second sub-annular wall 5322. The screwing portion 534 is fixedly connected to the inner wall of the outer shell 100, so that the installation of the medium housing 500 is more stable and reliable.

[0224] The number of the screwing portions 534 can be multiple, and the multiple screwing portions 534 are arranged at intervals in the circumferential direction of the second sub-annular wall 5322, so that the installation of the medium housing 500 is more stable and reliable.

[0225] In some embodiments, the sound-emitting area 111 includes a first sound-emitting hole 1111. The first housing 52 is at least partially located within the sound-emitting area 111, and the second bottom wall 531 of the second housing 53 is located on the side of the transducer assembly 200 facing away from the sound-emitting area 111.

[0226] 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 further include a mounting portion 526 that protrudes from the outer peripheral side of one 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-emitting area 111.

[0227] In some embodiments, a first positioning groove 5261 is provided on the side of the mounting portion 526 facing the sound-emitting area 111, and a first positioning protrusion 114 is provided on the inner wall of the outer housing 100. The first positioning protrusion 114 is snap-fitted into the first positioning groove 5261. Thus, the quick positioning of the dielectric housing 500 and the outer housing 100 can be achieved through the first positioning protrusion 114 and the first positioning groove 5261, and the connection stability and reliability between the dielectric housing 500 and the outer housing 100 can be improved.

[0228] Exemplarily, at least two groups of positioning ribs 5262 protrude from the surface of the mounting portion 526 facing the sound-emitting area 111. Each group of positioning ribs 5262 includes two spaced-apart positioning ribs 5262 to define the first positioning groove 5261 therebetween.

[0229] In some embodiments, at least two groups of positioning ribs 5262 are spaced along the circumferential direction of the third annular wall 523, so as to form a routing space 5263 between adjacent two groups of positioning ribs 5262. Then, as will be introduced later, the fifth circuit board can be routed through the routing space 5263.

[0230] 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 columnar and at least partially located inside the abutting section 112. The fourth sub-annular wall 5232 is connected to one end of the third sub-annular wall 5231 facing away from the second top wall 522. The fourth sub-annular wall 5232 is conical. Along the direction approaching the third sub-annular wall 5231, the cross-sectional area of the fourth sub-annular wall 5232 is set to decrease, and the fourth sub-annular wall 5232 is located inside the transition section 113. Thus, the shape of the dielectric housing 500 can be adapted to the abutting section 112 and the transition section 113, so as to make full use of the space inside the abutting section 112 and the transition section 113 to provide a larger dielectric chamber 51.

[0231] In some embodiments, a first positioning groove 5261 is provided on one side of the installation part 526 facing the sound-emitting 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 clamped in the first positioning groove 5261.

[0232] In some embodiments, a liquid injection hole communicating with the outside is further provided on the inner wall of the medium chamber 51, and a sealing plug is provided in the liquid injection hole. Therefore, when injecting the ultrasonic transmission medium into the medium chamber 51, the pressure in the medium chamber 51 can also be adjusted by the pressure regulating component 600a.

[0233] Optionally, the liquid injection hole can be provided on the circumferential side wall of the medium chamber 51; in this way, the risk of hitting the sealing plug during the assembly process can be reduced. Further, a protective ring protrusion is provided on the circumferential side wall around the liquid injection hole, and the sealing plug is provided inside the protective ring protrusion. In this way, the protective ring protrusion can protect the sealing plug to prevent the sealing plug from falling off accidentally.

[0234] Further, the liquid injection hole is provided at one end of the circumferential side wall close to the bottom wall of the medium chamber 51, so as to avoid generating too many bubbles during liquid injection. Specifically, in the above embodiments, the circumferential side wall of the medium chamber 51 includes a first circumferential wall 532 and a third circumferential wall 523, and the bottom wall of the medium chamber 51 is the second bottom wall 531; the liquid injection hole can be provided at one end of the first circumferential wall 532 close to the second bottom wall 531.

[0235] As mentioned above, in some embodiments, the skin care device further includes a first electrical connection line 23, and one end of the first electrical connection line 23 is connected to the first electrical connection terminal 211. Then, the other end of the first electrical connection line 23 penetrates through the inner wall (i.e., the chamber wall) of the medium chamber 51 (such as the medium housing 500). Thus, the skin care device can supply power to the transducer assembly 200 from outside the medium chamber 51.

[0236] In some embodiments, the medium housing 500 is further provided with a second installation hole 535, and the transmission shaft 31 of the transmission shaft assembly 300 is movably and sealingly installed in the second installation hole 535. For example, the transmission shaft assembly 300 includes a transmission shaft 31 and a second seal 34. The transmission shaft 31 is movably and sealingly installed in the second installation hole 535 through the second seal 34, so that one end of the transmission shaft 31 extends into the medium chamber 51. Thus, the situation of liquid leakage at the second installation hole 535 can be avoided.

[0237] Correspondingly, the transducer assembly 200 is installed at one end of the transmission shaft 31 located in the medium chamber 51. Then, during the long-term movement of the transmission shaft 31 to drive the transducer assembly 200 to move, the second seal 34 is prone to wear, resulting in a gap being formed between the second seal 34 and the circumferential surface of the transmission shaft 31.

[0238] 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 to closely fit 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 fit to the circumferential surface of the transmission shaft 31.

[0239] Then, even if the inner ring seal portion 341 is worn after the long-term operation of the transmission shaft assembly 300, the inner ring seal portion 341 can still be closely attached to the circumferential surface of the transmission shaft assembly 300 through the elastic member 342 or the elasticity of the inner ring seal portion 341 itself, thereby improving the liquid leakage problem at the transmission shaft 31.

[0240] When the second seal 34 includes an elastic member 342, the elastic member 342 can be sleeved on the outer circumferential side of the inner ring seal portion 341, so that the elastic member 342 can apply forces to all positions in the circumferential direction of the inner ring seal portion 341, so that all positions in the circumferential direction of the inner ring seal portion 341 are closely attached to the circumferential surface of the transmission shaft 31.

[0241] Exemplarily, the elastic member 342 can be an annular spring or an annular telescopic member (such as an annular telescopic rope or an annular telescopic tube, etc.).

[0242] In some embodiments, the second seal 34 further includes an outer ring seal portion 343 and a first bottom wall 344. The outer ring seal portion 343 abuts against the hole wall of the second mounting hole 535. The first bottom wall 344 is annular. The inner edge of the first bottom wall 344 is connected to the inner ring seal portion 341, and the outer edge of the first bottom wall 344 is connected to the outer ring seal portion 343. Thus, the gap between the hole wall of the second mounting hole 535 and the circumferential surface of the transmission shaft 31 is sealed by the inner ring seal portion 341, the first bottom wall 344 and the outer ring seal portion 343.

[0243] In some embodiments, the outer ring seal portion 343 is installed in the second mounting hole 535 by interference fit, thereby improving the sealing effect at the second mounting hole 535.

[0244] In some embodiments, the outer ring seal portion 343 includes a rigid support ring and an outer seal portion disposed outside the rigid support ring. The outer seal portion is connected to the first bottom wall 344, thereby improving the strength of the outer ring seal portion 343 to improve the sealing effect at the second mounting hole 535.

[0245] The rigid support ring can be made of metal or any other material with a hardness greater than that of the outer sealing portion, and the embodiments of the present application do not limit this. The outer sealing portion can be made of a material with good sealing performance such as rubber or silica gel.

[0246] In some embodiments, an installation 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 installation groove.

[0247] In some embodiments, the first bottom wall 344 is respectively connected to one end of the inner ring sealing portion 341 facing away from the medium chamber 51 and one end of the outer ring sealing portion 343 facing away from the medium chamber 51. Thus, it is possible to prevent the elastic member 342 from detaching from the installation groove at the end of the second installation hole 535 facing away from the medium chamber 51, thereby improving the stability and reliability of the installation of the elastic member 342.

[0248] In some embodiments, the second installation hole 535 is a stepped hole, and the inner wall of the second installation hole 535 includes a stepped surface 5351 facing the outside of the medium chamber 51, and the notch of the installation groove faces the stepped surface 5351. The stepped surface 5351 can prevent the elastic member 342 from falling into the medium chamber 51.

[0249] Exemplarily, a surface convex portion 5352 protrudes from the surface of the medium housing 500 on the side facing away from the medium chamber 51. The second installation hole 535 is disposed through the surface convex portion 5352, so that the second installation hole 535 forms a stepped hole. For example, the surface convex portion 5352 can be a ring convex surrounding the transmission shaft 31.

[0250] In some embodiments, the skin care device further includes a second installation bracket 41 located outside the medium chamber 51. The drive assembly 400 is installed on the second installation bracket 41.

[0251] In some examples, the second installation bracket 41 can be connected to the outer shell 100 and / or the medium housing 500.

[0252] In some embodiments, a third installation hole 411 is provided on the second installation bracket 41, and the transmission shaft 31 passes through the third installation hole 411 and is in clearance fit with the third installation hole 411.

[0253] Among them, the second installation bracket 41 also covers the opening on the side of the second installation hole 535 facing away from the medium chamber 51 to limit the second seal 34 from detaching from the second installation hole 535 in the direction away from the medium chamber 51. Thus, through the cooperation of the stepped surface 5351 and the second installation bracket 41, it is possible to prevent the second seal 34 from detaching from the second installation hole 535. And reusing the second installation bracket 41 to realize the limit of the second seal 34 can reduce the material usage and assembly steps.

[0254] Exemplarily, the second mounting bracket 41 is provided with a second annular protrusion 412 facing the second annular protrusion 412 towards the side of the second seal 34 facing away from the medium chamber 51 to limit the second seal 34 from disengaging from the second mounting hole 535 in the direction away from the medium chamber 51.

[0255] 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.

[0256] For example, the lubricating oil can be at least partially disposed in the mounting groove. It can also be understood that the elastic member 342 may not be provided in the mounting groove, and the embodiments of the present application do not limit this.

[0257] 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 transmission 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 transmission connection with the transmission shaft 31 to drive the transmission shaft 31 to rotate around the first axis L1. Thus, automatic adjustment can be achieved through the corresponding first drive assembly 42 and / or second drive assembly 43, which can improve the movement accuracy of the transmission shaft assembly 300 to improve the skin care effect.

[0258] It should be noted that the skin care device may not be provided with the medium housing 500. That is, the transmission shaft assembly 300 includes a transmission shaft 31 movably disposed in the housing 100, the transmission shaft 31 extends along the first axis L1, and the drive assembly 400 includes a first drive assembly 42 and a second drive assembly 43. At this time, the skin care device may or may not be provided with the medium housing 500, and the embodiments of the present application do not limit this.

[0259] Please continue to refer to Figure 14, in the first positional relationship between the first driving component 42 and the second driving component 43, the first driving component 42 is located between the second driving component 43 and the transducer component 200. Then, compared with the first driving component 42 and the second driving component 43 being arranged in the same area along the first axis L1 of the transmission shaft 31, in the embodiment of the present application, the first driving component 42 and the second driving component 43 are arranged at different positions along the first axis L1 of the transmission shaft 31, which can make each part of the skin care device along the first axis L1 thinner, so that the housing 100 can be made thinner for easy gripping. That is to say, since both the first driving component 42 and the second driving component 43 are located on the same side of the transducer component 200, it can also make each part of the skin care device thinner in the axial direction of the transmission shaft 31, thus realizing a miniaturized design. In addition, the first driving component 42 being located between the second driving component 43 and the transducer component 200 can also improve the installation stability and reliability of the first driving component 42 and the second driving component 43.

[0260] Exemplarily, a driving position 315 is provided on the circumferential side of the transmission shaft 31. The driving position 315 is located between the medium housing 500 and the second driving component 43. For example, the driving position 315 is located in the middle of the transmission shaft 31. The first driving component 42 and the transmission shaft 31 are in transmission connection at the driving position 315, so that the first driving component 42 can drive the transmission shaft 31 to move along the first axis L1 and allows the transmission shaft 31 to rotate around the first axis L1.

[0261] For example, the first driving component 42 includes a pushing member 421. The pushing member 421 and the driving position 315 are cooperated in a separable manner such as magnetic connection, negative pressure adsorption, a clutch component, 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.

[0262] Of course, the pushing member 421 can also be cooperated with the driving position 315 in other ways. For example, please continue to refer to Figure 15 , optionally, the driving position 315 includes an annular driving groove provided on the outer peripheral side of the transmission shaft 31. A part of the pushing member 421 is rotatably clamped in the driving groove to form a transmission connection. Thus, since a part of the pushing member 421 is clamped in the driving groove, when the pushing member 421 moves along the first axis L1, it can push the groove wall of the driving groove to make the transmission shaft 31 move along the first axis L1; at the same time, since the pushing member 421 is rotatably arranged relative to the transmission shaft 31, the transmission shaft 31 can also rotate around the first axis L1, so that the pushing member 421 is clamped at different positions in the circumferential direction of the driving groove, which can avoid interference between the rotation of the pushing member and the transmission shaft 31.

[0263] 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 the axial direction (i.e., the direction of the first axis L1) through the pushing member 421.

[0264] For example, the pushing member 421 includes a pushing connection portion 4211 and two pushing arms 4212. One end of the pushing connection portion 4211 is in transmission connection with the output shaft of the first motor 422, and the two pushing arms 4212 are connected to the other end of the pushing connection portion 4211; the two pushing arms 4212 are respectively disposed on opposite sides of the transmission shaft 31, and the two pushing arms 4212 are respectively clamped in the transmission grooves. Thus, by the cooperation of the two pushing arms 4212 and the transmission grooves, the connection stability and reliability between the pushing member 421 and the transmission shaft 31 can be improved.

[0265] In some embodiments, the first driving assembly 42 further includes a lead screw module 423. The lead screw module 423 includes a lead screw 4231 and a lead screw nut 4232 that is helically screwed onto the lead screw 4231. The lead screw nut 4232 is connected to the pushing connection portion 4211, and the lead screw 4231 is in transmission connection with the output shaft of the first motor 422. Thus, the accuracy of the first motor 422 driving the pushing member 421 to move can be improved through the lead screw module 423.

[0266] It should be noted that the lead screw nut 4232 and the pushing connection portion 4211 can be integrally formed or separately formed, and the embodiments of the present application do not limit this.

[0267] In some embodiments, the first driving assembly 42 further includes a gear reduction module 424, and the output shaft of the first motor 422 and the lead screw 4231 are in transmission connection through the gear reduction module 424. Thus, since the gear reduction module 424 and the lead screw module 423 are added to the transmission chain between the first motor 422 and the transmission shaft 31, the accuracy of the first motor 422 driving the transmission shaft 31 to move can be improved twice, and further the adjustment accuracy of the transducer assembly 200 can be improved.

[0268] As mentioned above, the skin care device further includes a second mounting bracket 41 located outside the medium chamber 51. Then, it can be that the lead screw module 423 is mounted and fixed on the second mounting bracket 41, the gear reduction module 424 is mounted and fixed on the lead screw module 423, and the first motor 422 is mounted and fixed on the gear reduction module 424. Therefore, in the actual assembly process, the first motor 422, the lead screw module 423, and the gear detection module can be integrally mounted as a whole to the second mounting bracket 41 to improve the assembly efficiency of the skin care device.

[0269] In some embodiments, the first driving component 42 further includes a first sensor 425. The first sensor 425 is used to detect the position information of the lead screw nut 4232. Thus, by detecting the position information of the lead screw nut 4232 through the first sensor 425 as feedback, the first motor 422 can drive the transmission shaft 31 to move more accurately, and finally improve the adjustment accuracy of the transducer assembly 200.

[0270] Exemplarily, the first driving component 42 further includes a fourth circuit board 426. The fourth circuit board 426 is installed on the lead screw module 423, and the first sensor 425 is installed on the side of the fourth circuit board 426 facing the lead screw module 423.

[0271] In some embodiments, the lead screw module 423 further includes a lead screw seat 4233. The lead screw 4231 is rotatably installed on the lead screw seat 4233. A sliding portion 4234 is provided on the outer peripheral side of the lead screw nut 4232, and the sliding portion 4234 is slidably connected to the lead screw seat 4233. Thus, the sliding trajectory of the pusher 421 can be made more stable and reliable.

[0272] The first sensor 425 can be correspondingly arranged with the sliding portion 4234 to be used for detecting the position information of the lead screw nut 4232.

[0273] For example, the first sensor 425 can include a Hall sensor, a photoelectric sensor, etc., and the embodiments of the present application do not limit this.

[0274] In some embodiments, the first motor 422 is a stepping motor, which can further improve the adjustment accuracy of the transducer assembly 200.

[0275] In some embodiments, the second driving component 43 includes a second motor 431. The output shaft of the second motor 431 is in a relatively movable transmission connection with the transmission shaft 31 along a first axis L1, so that the second motor 431 is used to drive the transmission shaft 31 to rotate synchronously around the first axis L1 through the output shaft, and is used to enable the transmission shaft 31 to move along the first axis L1 relative to the output shaft of the second motor 431. Then, when the first driving component 42 drives the transmission shaft 31 to move along the first axis L1 direction, the transmission shaft 31 can move along the first axis L1 relative to the output shaft of the second motor 431.

[0276] In the first transmission connection mode between the output shaft of the second motor 431 and the transmission shaft 31, the second driving 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 extending along the first axis L1. The transmission hole 4321 is a non-circular hole, and one end of the transmission shaft 31 facing away from the sound emitting area 111 is slidably disposed in the transmission hole 4321 along the direction of the first axis L1. Therefore, it can also be simply connected such that the adapter 432 is sleeved on the transmission shaft 31, so that the transmission shaft 31 can telescopically penetrate through the adapter 432 along the first axis L1.

[0277] 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 the embodiments of the present application do not limit this.

[0278] In some embodiments, the second motor 431 is a stepping motor, so as to further improve the adjustment accuracy of the transducer assembly 200.

[0279] It should be understood that the driving assembly 400 may also be provided with only the first driving assembly 42 without the second driving assembly 43. That is, the first driving assembly 42 includes a first motor 422 and a pushing member 421. The first motor 422 is in transmission connection with the pushing member 421. The driving end of the pushing member 421 is clamped in the transmission groove relative to the transmission shaft 31 to form a transmission connection. The first motor 422 is used to drive the transmission shaft 31 to move along the axis direction through the pushing member 421. At this time, the driving assembly 400 may include the second driving assembly 43, and the second driving assembly 43 may also be disposed on the side of the first driving assembly 42 away from the transducer assembly 200. The driving assembly 400 may also not be provided with the second driving assembly 43, and the embodiments of the present application do not limit this.

[0280] 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 driving 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 cooperates with the first transmission notch 4322.

[0281] Exemplarily, the first transmission notch 4322 and the second transmission notch 316 both extend along the direction of the first axis L1. The adapter 432 is embedded in the second transmission notch 316, and the transmission shaft 31 is embedded in the first transmission notch 4322. For example, the adapter 432 can be semi-cylindrical, and one end of the transmission shaft 31 is semi-cylindrical and is adapted to the adapter 432, so that they can be abutted against each other to form a cylindrical structure. That is to say, different from the first transmission connection mode between the output shaft of the second motor 431 and the transmission shaft 31, the adapter 432 may not be sleeved on the transmission shaft 31.

[0282] Certainly, a sliding groove extending along the first axis L1 can be provided on one of the side walls of the first transmission notch 4322 and the side walls of the second transmission notch 316, and a sliding block extending along the direction of the first axis L1 can be provided on the other. The sliding block is slidably installed in the sliding groove.

[0283] In the third transmission connection mode 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 the first transmission notch 4322, and the transmission shaft 31 is provided with the second transmission notch 316 adapted to the first transmission notch 4322. That is to say, different from the second transmission connection mode between the output shaft of the second motor 431 and the transmission shaft 31, the output shaft of the second motor 431 can be directly in contact and cooperation with the transmission shaft 31, so that there is no need to provide an additional adapter 432.

[0284] Please continue to refer to Figure 17 , optionally, in the second positional relationship between the first drive assembly 42 and the second drive assembly 43, it can also be that the second drive assembly 43 is located between the first drive assembly 42 and the transducer assembly 200. Then, compared with the first drive assembly 42 and the second drive assembly 43 being arranged in the same area along the direction of the first axis L1 of the transmission shaft 31, in the embodiment of the present application, the first drive assembly 42 and the second drive assembly 43 are arranged at different positions along the direction of the first axis L1 of the transmission shaft 31, which can make each part of the skin care device finer along the direction of the first axis L1.

[0285] Exemplarily, such as Figure 17As shown in FIG. a, the second driving assembly 43 is installed at one end of the transmission shaft 31 away from the transducer assembly 200. The first driving assembly 42 includes a first motor 422. The first motor 422 is located on the side of the second driving assembly 43 away from the transducer assembly 200. A transmission groove is provided on the circumferential surface of the transmission shaft 31. The transmission groove is located between the medium housing 500 and the second driving assembly 43. The driving assembly 400 further 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. The other end of the pushing member 421 is in transmission connection with the first motor 422, so as to enable the first motor 422 to push the transmission shaft 31 to move along the first axis L1 direction through the pushing member 421.

[0286] It can also be understood that for the transmission connection manner between the second driving assembly 43 and the transmission shaft 31, reference can be made to the transmission connection manner between the second driving assembly 43 and the transmission shaft 31 in the second positional relationship between the first driving assembly 42 and the second driving assembly 43 above, which will not be elaborated in this embodiment of the present application.

[0287] Optionally, as Figure 17 As shown in FIG. b, a transmission groove is provided on the circumferential surface of one end of the transmission shaft 31 away from the transducer assembly 200. The first driving assembly 42 includes a first motor 422 and 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. The other end of the pushing member 421 is in transmission connection with the first motor 422, so as to enable the first motor 422 to push the transmission shaft 31 to move along the first axis L1 direction through the pushing member 421. The second driving assembly 43 includes a first gear 433, a second gear 434 and a second motor 431. The first gear 433 is sleeved on the transmission shaft 31 in a synchronously rotatable and relatively slidable manner. The second gear 434 meshes with the first gear 433. The output shaft of the second motor 431 is fixedly connected to the first gear 433. Thus, the second driving assembly 43 is located between the first driving assembly 42 and the transducer assembly 200; wherein the first gear 433 can be slidably sleeved outside the transmission shaft 31 through a non-circular hole to be in transmission cooperation with the transmission shaft 31, so as to realize that the first gear 433 is sleeved on the transmission shaft 31 in a synchronously rotatable and relatively slidable manner.

[0288] Please continue to refer to Figure 18 、 Figure 19 and Figure 27, in some embodiments, the skin care device further includes a second mounting bracket 41. The second mounting bracket 41 may include a first cross plate 413, a first surrounding plate 414, and a second surrounding plate 415. The first cross plate 413 is located on the side of the transmission shaft 31 away from the transducer assembly 200, and one surface of the first cross plate 413 in the thickness direction faces the transducer assembly 200. The second driving assembly 43 is at least partially mounted on the side of the first cross plate 413 away from the transducer assembly 200. The first surrounding plate 414 is connected to the first cross plate 413, and the first surrounding plate 414 is located on the outer peripheral side of the transmission shaft 31 and extends circumferentially along the transmission shaft 31. The second surrounding plate 415 is connected to the first cross plate 413, and the second surrounding plate 415 is located on the outer peripheral side of the second driving assembly 43 (such as the second motor 431 of the second driving assembly 43) and extends circumferentially along the second driving assembly 43. Both the first surrounding plate 414 and the second surrounding plate 415 are fixedly connected to the housing 100, and the first surrounding plate 414 and the second surrounding plate 415 are located on different sides in the circumferential direction of the first axis L1.

[0289] Thus, the transmission shaft 31 and the second driving assembly 43 can be protected by the first surrounding plate 414 and the second surrounding plate 415 respectively, 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.

[0290] In some embodiments, the second mounting bracket 41 further includes a third surrounding plate 416. The third surrounding plate 416 is connected to the first cross plate 413, and the third surrounding plate 416 and the second surrounding plate 415 are arranged at intervals in the circumferential direction of the second driving assembly 43 (such as the second motor 431 of the second driving assembly 43). Therefore, 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 third surrounding plate 416 and the first surrounding plate 414 are fixedly connected to the housing 100 on the same side in the circumferential direction of the first axis L1, and the third surrounding plate 416 and the second surrounding plate 415 are fixedly connected to the housing 100 on the opposite side in the circumferential direction of the first axis L1.

[0292] Please also combine Figure 20 and Figure 21 , in some embodiments, the skin care device is further provided with a first circuit board assembly 71. The first circuit board assembly 71 includes a first circuit board 711 and a key 712.

[0293] 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 .

[0294] 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.

[0295] 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.

[0296] 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.

[0297] 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.

[0298] 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.

[0299] In some embodiments, along the direction of the first axis L1, at least 80% of the area of the orthographic projection of the first driving assembly 42 coincides with the orthographic projection of the medium housing 500, and at least 80% of the area of the orthographic projection of the second driving assembly 43 coincides with the orthographic projection of the medium housing 500. Thus, the medium housing 500, the first driving assembly 42, and the second driving assembly 43 are substantially located within the same virtual cylinder, making the parts within the outer shell 100 more compact.

[0300] In some embodiments, the driving assembly 400 is disposed on the side of the transducer assembly 200 away from the sound-emitting area 111. The driving assembly 400 is in driving connection with the transmission shaft assembly 300 for driving the transmission shaft assembly 300 to move, such as driving the transmission shaft assembly 300 to rotate about the first axis L1 and / or move along the first axis L1.

[0301] Please continue to refer to Figure 21 , wherein the skin care device may further include a second circuit board assembly 72, and the second circuit board assembly 72 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 on the side of the driving assembly 400 away from the transducer assembly 200.

[0302] Therefore, compared with using a large board to replace the second circuit board 721 and the third circuit board 722, in the embodiment of the present application, the second circuit board 721 and the third circuit board 722 are stacked on the side of the driving assembly 400 away from the transducer assembly 200, which can effectively reduce the length of the second circuit board assembly 72, and thus is beneficial to reducing the size of the skin care device in the length direction of the second circuit board assembly 72. At the same time, the space on the side of the driving assembly 400 away from the transducer assembly 200 can be reused, which is beneficial to the miniaturized design of the outer shell 100. Compared with disposing the driving assembly 400 on one side in the thickness direction of the second circuit board assembly 72, in the present application, disposing the second circuit board assembly 72 on the side of the driving assembly 400 away from the transducer assembly 200 is beneficial to reducing the circumferential size of the skin care device, that is, it is beneficial to make the skin care device thinner to avoid the skin care device being too thick, thus facilitating the miniaturized design and holding of the skin care device.

[0303] For example, the housing 100 is in a long strip shape, and the sound output area 111, the transducer assembly 200, the driving assembly 400, and the second circuit board assembly 72 are sequentially arranged along the length direction of the skin care device. Both the second circuit board 721 and the third circuit board 722 extend along the length direction of the skin care device. Thus, the space inside the housing 100 in the length direction can be utilized for charging, so as to avoid the housing 100 being too thick and inconvenient for storage and holding. And by stacking the second circuit board 721 and the third circuit board 722 on the side of the driving assembly 400 away from the transducer assembly 200, it is also beneficial to increase the weight on one side of the tail of the housing 100, making the center of gravity of the skin care device approach the center of the housing 100, thereby being beneficial to reducing the fatigue speed when the user holds it by hand.

[0304] 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 installed on the second circuit board 721. The power interface 7211 is used for electrically connecting to an external power source, and the transformer 7212 is electrically connected to the transducer assembly 200 to drive the transducer assembly 200. It can be understood that the transducer assembly 200 needs a relatively large working voltage for driving. Therefore, both the power interface 7211 and the transformer 7212 are arranged on the second circuit board 721, so that the electric energy with a relatively high voltage input externally can directly drive the transducer assembly 200.

[0305] 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 part of the electric energy input from the external power source to the third circuit board 722, and the third circuit board 722 is electrically connected to the driving assembly 400 to drive the driving assembly 400. Then, during the actual working process, the second circuit board 721 can divert a part of the electric energy with a low voltage from the electric energy input by the power interface 7211 to the third circuit board 722 to drive the driving assembly 400, while the part of the electric energy with a relatively large voltage continues to drive the transducer assembly 200 to work.

[0306] It can be understood that since the second circuit board assembly 72 is electrically connected to the transducer assembly 200, relatively large heat is easily generated during the working process, thus affecting the normal use of the skin care device.

[0307] Based on this, in some embodiments, the skin care device may further include a blower 73. The blower 73 is arranged inside the housing 100, and the blower 73 is used to drive the air convection inside and outside the housing 100 to dissipate heat from the inside of the housing 100. Thereby improving the heat dissipation effect of the skin care device.

[0308] For example, please refer to Figure 21 and Figure 22, the housing 100 is formed with a first air outlet 16 and a second air outlet 17, and the second circuit board assembly 72 is located between the first air outlet 16 and the second air outlet 17. Thus, the blower 73 can drive the air inside and outside the housing to form convection through the first air outlet 16 and the second air outlet 17, and since the second circuit board assembly 72 is arranged between the first air outlet 16 and the second air outlet 17, the flowing air can flow through the heat - generating area on the second circuit board assembly 72 to a greater extent, thereby improving the heat dissipation effect on the second circuit board assembly 72.

[0309] The blower 73 can be arranged on the second circuit board 721 so that the blower 73 is located between the first air outlet 16 and the second air outlet 17 to at least dissipate heat from the second circuit board assembly 72.

[0310] In some embodiments, the second air outlet 17 can be located on one end face of the housing 100 facing away from the sound - emitting area 111.

[0311] In some embodiments, a gripping area is formed outside the housing 100, and the first air outlet 16 and the second air outlet 17 are arranged at both ends of the gripping area.

[0312] The blower 73 can be arranged side - by - side with the transformer 7212 on the same side of the second circuit board 721; and / or, the blower 73 is located on the side of the transformer 7212 away from the driving assembly 400. Then, since both the blower 73 and the transformer 7212 are relatively thick components, by arranging the blower 73 and the transformer 7212 side - by - side on the same side of the second circuit board 721 instead of on different sides of the second circuit board 721, the overall thickness formed by the blower 73, the transformer 7212, and the second circuit board 721 can be reduced, which is beneficial to the thin and light design of the skin care device.

[0313] In some embodiments, the transformer 7212 is arranged at one end of the second circuit board 721 close to the transducer assembly 200, and at least part of the blower 73 is located on the side of the transformer 7212 away from the transducer assembly 200. Then, compared with the case where the transformer 7212 is located on the side of the blower 73 away from the transducer assembly 200, the transformer 7212 can be closer to the transducer assembly 200, so that the electrical connection wire between the transformer 7212 and the transducer assembly 200 can be shorter.

[0314] The blower 73 can be a centrifugal blower 73 or any other type of blower 73, and the embodiments of the present application do not limit this.

[0315] In some embodiments, the blower 73 is mounted on the second circuit board 721 so that a space for air flow is formed between the blower 73 and the second circuit board 721, thereby improving the heat dissipation effect at the second circuit board assembly 72.

[0316] In some embodiments, the blower 73 has two air inlets. One air inlet of the blower 73 faces the second circuit board 721, and the other air inlet of the blower 73 faces away from the second circuit board 721. Thus, the blower 73 can drive air to flow between the blower 73 and the second circuit board 721 to improve the heat dissipation effect at the second circuit board assembly 72.

[0317] In some embodiments, the air outlet of the blower 73 is located on the side of the blower 73 facing away from the transducer assembly 200 and faces 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 is the air outlet of the housing 100.

[0318] In some embodiments, the housing 100 is elongated. The sound-emitting area 111 is located at one end of the housing 100 in the length direction, and the second air outlet 17 is located at the other end of the housing 100 in the length direction; wherein, along the length direction of the housing 100, the first air outlet 16 is located between the sound-emitting area 111 and the second air outlet 17, and the transducer assembly 200 is located between the sound-emitting area 111 and the first air outlet 16. Thus, the blower 73 can drive air to flow through the second circuit board assembly 72 to dissipate heat from the second circuit board assembly 72.

[0319] In some embodiments, at least a part of the first air outlet 16 faces the driving assembly 400, so that the blower 73 can also be reused to dissipate heat from the driving assembly 400.

[0320] In some embodiments, the second circuit board assembly 72 further includes a conversion module 7213 disposed 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.

[0321] The conversion module 7213 can be at least partially located on the side of the blower 73 close to the second circuit board 721, or at least a part of the conversion module 7213 is located between the blower 73 and the transformer 7212. That is to say, the blower 73 can cover the conversion module 7213, or the blower 73 and the transformer 7212 can be arranged side by side on the same side of the second circuit board 721. Thus, the blower 73 drives air to flow through the conversion module 7213 to dissipate heat from the conversion module 7213. The embodiments of the present application do not limit this.

[0322] In some embodiments, the conversion module 7213 can include a push-pull circuit, a full-bridge circuit or a half-bridge circuit. The embodiments of the present application do not limit this.

[0323] 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.

[0324] 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.

[0325] 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.

[0326] 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.

[0327] 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.

[0328] In some embodiments, along the direction of the transducer assembly 200 towards the drive assembly 400, the orthographic projection of the drive assembly 400 protrudes beyond the outer side of the orthographic projection of the second circuit board assembly 72 on at least one side in the thickness direction of the second circuit board assembly 72.

[0329] For example, when along the direction of the transducer assembly 200 towards the drive assembly 400, the orthographic projection of the drive assembly 400 protrudes beyond the outer side of the orthographic projection of the second circuit board assembly 72 on each side in the thickness direction of the second circuit board assembly 72, the housing 100 can be made thinner at the second circuit board assembly 72 for easy gripping.

[0330] Exemplarily, the second circuit board assembly 72 further includes a second component 7221. The second component 7221 is disposed on the 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 drive assembly 400 is less than the maximum thickness of the second circuit board assembly 72.

[0331] Exemplarily, the second circuit board assembly 72 further includes a second component 7221. The second component 7221 is disposed on the side of the third circuit board 722 facing away from the second circuit board 721. The height by which the second component 7221 protrudes from the side of the third circuit board 722 facing away from the second circuit board 721 is less than the height by which the drive assembly 400 protrudes from the side of the third circuit board 722 facing away from the second circuit board 721.

[0332] Exemplarily, the height by which the transformer 7212 protrudes from the side of the second circuit board 721 facing away from the third circuit board 722 is less than the height by which the drive assembly 400 protrudes from the side of the second circuit board 721 facing away from the third circuit board 722.

[0333] In some embodiments, the transformer 7212 is a planar transformer. Thus, the skin care device can be made thinner by taking advantage of the thin and light characteristics of the planar transformer itself.

[0334] In some embodiments, one side surface in the thickness direction of the transformer 7212 faces the side surface of the second circuit board 721 facing 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 to make the second circuit board assembly 72 thinner as a whole.

[0335] In some embodiments, one side surface in the thickness direction of the blower 73 is disposed facing one side surface in the thickness direction of the second circuit board 721. Therefore, it can also be understood that the blower 73 is horizontally mounted to make the second circuit board assembly 72 thinner as a whole.

[0336] In some embodiments, the skin care device further includes a first circuit board assembly 71. The first circuit board assembly 71 includes a first circuit board 711 and a human-machine interaction component. The first circuit board 711 is disposed within the housing 100 and electrically connected to the second circuit board assembly 72. The first circuit board 711 extends in the direction of the drive assembly 400 towards the transducer assembly 200, and one surface of the first circuit board 711 in the thickness direction faces the drive assembly 400. The human-machine interaction component is disposed on the side of the first circuit board 711 facing away from the drive assembly 400.

[0337] For example, as mentioned above, the human-machine interaction component may be a button 712.

[0338] In some embodiments, the first circuit board assembly 71 further includes a display component 714. The display component 714 is disposed on the side of the first circuit board 711 facing away from the drive assembly 400, and the display component 714 is located on the side of the human-machine interaction component along the direction close to the sound output area 111.

[0339] In some embodiments, the skin care device further includes an electrical stimulation component 800. The electrical stimulation component 800 includes an electrode sheet 81. The electrode sheet 81 is at least partially located on the outer peripheral side of the sound output area 111 for outputting current to the skin to be treated. Thus, the skin care device has at least two functions of ultrasonic focused skin care and electrical stimulation, so as to enrich the functions of the skin care device.

[0340] In some embodiments, the housing 100 includes a first end face 1121 formed with the sound output area 111. The electrode sheet 81 is only located on the first end face 1121, resulting in a poor fitting effect between the electrode sheet 81 and the skin.

[0341] Please refer to Figure 23 and Figure 24 , based on this, in some embodiments, the housing 100 further includes a third side face 1122 bent and connected to the first end face 1121. The electrode sheet 81 is at least partially located on the first end face 1121 and at least partially located on the third side face 1122. Therefore, since the skin has a certain elasticity, when the first end face 1121 is attached to the skin to be treated, a depression will be formed on the skin to be treated. At this time, both the part of the electrode sheet 81 located on the first end face 1121 and the part located on the third side face 1122 can be well attached to the inner side of the depression, so as to increase the fitting area between the electrode sheet 81 and the skin to be treated, thereby improving the fitting effect between the electrode sheet 81 and the skin.

[0342] For example, the electrode sheet 81 may include a first electrode sheet, the outer surface of the first electrode sheet extending from the first end face 1121 to the third side face 1122; and / or, the electrode sheet 81 includes a second electrode sheet and a third electrode sheet, the outer surface of the second electrode sheet being located at the first end face 1121, and the outer surface of the third electrode sheet being located at the third side face 1122. Thus, electrode sheets 81 are provided at both the third side face 1122 and the first end face 1121.

[0343] In some embodiments, the first electrode sheet includes a fitting portion 811 and a penetrating portion 812. The fitting portion 811 includes a front portion 8111 and a side portion 8112 that are bent and connected. The front portion 8111 protrudes from the first end face 1121, and the side portion 8112 protrudes from the third side face 1122, so that the outer surface of the first electrode sheet extends from the first end face 1121 to the third side face 1122. The penetrating portion 812 protrudes from the inner surface of the front portion 8111, and the penetrating portion 812 penetrates through the housing 100, thereby enabling the installation and fixation of the first electrode sheet and facilitating the extension of the first electrode sheet into the housing 100 for power connection.

[0344] In some embodiments, the first electrode sheet further includes a connecting rib 813, and the connecting rib 813 is connected between the side portion 8112 and the penetrating portion 812. Thus, the structural strength of the side portion 8112 can be improved through the connecting rib 813 to prevent the side portion 8112 from warping and being damaged.

[0345] In some embodiments, chamfers are provided at the edges of the outer surface of the electrode sheet 81, thereby preventing the electrode sheet 81 from having straight edges that may scratch the skin or cause discomfort to the skin.

[0346] Exemplarily, the outer surface of the front portion 8111 and the outer surface of the side portion 8112 are in a rounded transition, thereby preventing the electrode sheet 81 from having straight edges that may scratch the skin or cause discomfort to the skin.

[0347] 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 face 1121 to the third side face 1122, and both the front portion 8111 and the side portion 8112 are embedded in the receiving groove 115. Thus, the receiving groove 115 can play a certain role in positioning and fixing the front portion 8111 and the side portion 8112. One end of the second through hole 116 faces the first end face 1121 and communicates with the bottom wall of the receiving groove 115, and the penetrating portion 812 penetrates through the second through hole 116 to realize the installation and fixation of the penetrating portion 812.

[0348] In some embodiments, the sound-emitting area 111 includes a first sound-emitting hole 1111 provided on the outer shell 100. A first annular protrusion 117 surrounding the first sound-emitting hole 1111 protrudes from the inner wall of the outer shell 100, and a dispensing ring groove 1171 communicating with the second through-hole 116 is formed on the outer peripheral side of the first annular protrusion 117. The penetrating portion 812 is disposed in the dispensing ring groove 1171, and a sealing adhesive is provided in the dispensing ring groove 1171. Thus, the sealing adhesive in the dispensing ring groove 1171 can achieve a good sealing effect at the second through-hole 116.

[0349] In some embodiments, the electrical stimulation assembly 800 may further include a fifth circuit board 82, and the fifth circuit board 82 surrounds the outer peripheral side of the dielectric chamber 51. All the electrode plates 81 are connected to the fifth circuit board 82.

[0350] The fifth circuit board 82 may 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.

[0351] The fifth circuit board 82 may abut against the first annular protrusion 117 to provide certain support and limitation for the fifth circuit board 82.

[0352] In some embodiments, the electrical stimulation assembly 800 further includes a third fastener (not shown in the figure), and the third fastener penetrates through the fifth circuit board 82 and is connected and fixed to the penetrating portion 812, thereby realizing the connection and fixation of the fifth circuit board 82 and the electrode plates 81.

[0353] Exemplarily, the penetrating portion 812 is provided with a threaded hole 8121. Correspondingly, the third fastener may include a fastening screw to screw and fix the penetrating portion 812 to the third fastener.

[0354] In some embodiments, the skin care device further includes a temperature sensor (not shown in the figure), and the temperature sensor is located inside the outer shell 100 and is mounted on the electrode plate 81. Thus, the temperature of the electrode plate 81 can be detected by the temperature sensor, and further, whether the electrode plate 81 or the first end face 1121 is attached to the skin to be treated can be judged according to the temperature change of the electrode plate 81.

[0355] Correspondingly, the skin care device further includes a skin attachment detection module, and the skin attachment detection module is connected to the temperature sensor to detect the attachment state of the first end face 1121 to the skin to be treated. The skin attachment detection module may be disposed on the fifth circuit board 82, and the skin attachment detection module may adopt any one of the skin attachment detection circuits in the prior art, and the embodiments of the present application do not make limitations thereto.

[0356] For example, the penetrating portion 812 is provided with a detection hole 8122, and a temperature sensor is installed in the detection hole 8122.

[0357] Such asFigure 21 As shown, in some embodiments, the fifth circuit board 82 is further provided with a fitting detection component 83, at least part of the fitting detection component 83 is arranged in the dispensing 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.

[0358] For example, the fitting detection component 83 may include a detection capacitor. Correspondingly, the fifth circuit board 82 may also be provided with a skin contact detection circuit, and the skin contact detection circuit is electrically connected to the fitting detection component 83 or the detection capacitor.

[0359] In some embodiments, the number of the electrode plates 81 is multiple, so as to perform electrical stimulation on a larger area of the skin to be treated through the multiple electrode plates 81.

[0360] For example, the multiple electrode plates 81 are arranged in a circumferential arrangement around the sound-emitting area 111, so that the distribution area of the electrode plates 81 is larger, and electrical stimulation is performed on a larger area of the skin to be treated.

[0361] In some embodiments, the electrode plate 81 protrudes from the outer surface of the housing 100 by 0.05 to 0.25 millimeters, so that it can avoid the electrode plate 81 protruding too much from the outer surface of the housing 100 and affecting the fitting between the first end face 1121 and the skin to be treated, and can also avoid the electrode plate 81 protruding too little from the outer surface of the housing 100 or even falling into the housing 100, resulting in the inability of the electrode plate 81 to fit with the skin to be treated.

[0362] 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 plate 81 is used to output at least one of an EMS current and a radio frequency current.

[0363] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0364] The above has introduced in detail the skin care device provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A skin care device, characterized in that, Comprising: A housing provided with a sound-emitting area; A transmission shaft movably disposed within the housing and extending along a first axis; A transducer assembly mounted at one end of the transmission shaft close to the sound-emitting area, and an ultrasonic focus of the transducer assembly passing through the sound-emitting area for irradiating the skin to be treated; And A driving assembly including a first driving assembly and a second driving assembly. The first driving assembly is located on a side of the transmission shaft away from the sound-emitting area, and the first driving assembly is in transmission connection with the transmission shaft. The first driving assembly is configured to drive the transmission shaft to rotate along the first axis so that the focus of the transducer assembly rotates around the first axis; the second driving assembly is located between the first driving assembly and the transducer assembly, and the second driving assembly is located on one side in the circumferential direction of the transmission shaft. The second driving assembly is in transmission connection with the transmission shaft for driving the transmission shaft to move along the extending direction of the first axis to drive the transducer assembly to move in the extending direction of the first axis.

2. The skin care device according to claim 1, wherein The skin care device further includes a second mounting bracket, and the second mounting bracket includes: A first horizontal plate located on a side of the transmission shaft facing away from the transducer assembly. One surface in the thickness direction of the first horizontal plate faces the transducer assembly, and at least a part of the second driving assembly is mounted on a side of the first horizontal plate facing away from the transducer assembly; A first surrounding plate connected to the first horizontal plate, the first surrounding plate being located on the outer peripheral side of the transmission shaft and extending along the circumferential direction of the transmission shaft; and A second surrounding plate connected to the first horizontal plate, the second surrounding plate being located on the outer peripheral side of the second driving assembly and extending along the circumferential direction of the second driving assembly; Wherein, both the first surrounding plate and the second surrounding plate are fixedly connected to the housing, and the first surrounding plate and the second surrounding plate are located on different sides in the circumferential direction of the first axis.

3. The skin care device according to claim 2, wherein The second mounting bracket further includes a third surrounding plate connected to the first horizontal plate, and the third surrounding plate and the second surrounding plate are arranged at intervals along the circumferential direction of the second driving assembly.

4. The skin care device according to claim 3, characterized in that, The third surrounding plate and the first surrounding plate are fixedly connected to the housing on the same side in the circumferential direction of the first axis, and the third surrounding plate and the second surrounding plate are fixedly connected to the housing on the opposite side in the circumferential direction of the first axis.

5. The skin care device according to claim 2, characterized in that, The skin care device is further provided with a first circuit board assembly, and the first circuit board assembly includes a first circuit board and a key. One surface in the thickness direction of the first circuit board faces the outer peripheral surface of the first surrounding plate, and the key is disposed on a side of the first circuit board facing away from the first surrounding plate; wherein, One surface of the outer surface of the first surrounding plate facing the first circuit board is a plane; and / or The first circuit board assembly further includes a first component, and the first component is located on a side of the first circuit board facing the first enclosure; a first connecting portion protrudes from a side of the first enclosure facing the first circuit board, and a second connecting portion and a first reinforcing rib are connected to each other on an inner wall of the housing. The second connecting portion is fixedly connected to the first connecting portion; along the first axis direction, a positive projection of at least one of the first connecting portion, the second connecting portion, and the first reinforcing rib at least partially coincides with a positive projection of the first component.

6. The skin care device according to claim 2, wherein, The second mounting bracket further includes at least one second cross plate, and the second cross plate is connected to the first enclosure. All the second cross plates and the first cross plate are arranged along the first axis direction; wherein, at least one of the second cross plates is fixedly connected to the first driving assembly, and the first driving assembly and the first enclosure are located on opposite sides in the circumferential direction of the transmission shaft; and / or the second cross plate is provided with a third mounting hole, and the transmission shaft passes through the third mounting hole and is in clearance fit with the third mounting hole.

7. The skin care device according to claim 6, wherein The skin care device further includes a medium housing, at least a part of the medium housing is disposed in the housing, a medium chamber is formed between the medium housing or between the medium housing and the housing, the medium chamber is used for storing an ultrasonic conduction medium, the transducer assembly is disposed in the medium chamber, the transmission shaft is movably disposed through the medium housing, and an end of the transmission shaft extending into the medium housing is in driving connection with the transducer assembly; wherein, the second cross plate closest to the transducer assembly is fixedly connected to the medium housing.

8. The skin care device according to any one of claims 1 to 7, characterized in that, A driving position is provided on a circumferential surface of the transmission shaft, the driving position is located in the middle of the transmission shaft, and the first driving assembly and the transmission shaft are in driving connection at the driving position, so that the first driving assembly can drive the transmission shaft to move along the first axis and allow the transmission shaft to rotate around the first axis.

9. The skin care device according to claim 8, characterized in that, The driving position includes an annular driving groove provided on an outer peripheral side of the transmission shaft; The first driving assembly includes a pushing member, and a part of the pushing member is rotatably clamped in the driving groove relative to the transmission shaft to form a driving connection.

10. The skin care device according to claim 8, characterized in that, The second driving assembly includes a second motor, and an output shaft of the second motor is in a relatively movable driving connection with the transmission shaft along the first axis, so that the second motor is used to drive the transmission shaft to rotate synchronously around the first axis through the output shaft, and to enable the transmission shaft to move along the first axis relative to the output shaft of the second motor.

11. The skin care device according to claim 10, characterized in that, The second driving assembly includes an adapter fixedly connected to the output shaft of the second motor. The adapter is provided with a transmission hole, the transmission hole extends along the first axis, and the transmission hole is a non-circular hole. An end of the transmission shaft facing away from the sound emitting area is slidably disposed in the transmission hole along the first axis direction; or, The second driving component includes an adapter fixedly connected to the output shaft of the second motor. The adapter is provided with a first transmission notch, and the transmission shaft is provided with a second transmission notch that cooperates with the first transmission notch; or, The output shaft of the second motor is provided with a first transmission notch, and the transmission shaft is provided with a second transmission notch that cooperates with the first transmission notch.

12. The skin care device according to any one of claims 1 to 6, characterized in that, The skin care device further includes a medium housing. At least a part of the medium housing is disposed within the outer housing. A medium chamber is formed between the medium housing or between the medium housing and the outer housing. The medium chamber is used for storing an ultrasonic conduction medium. The transducer assembly is disposed within the medium chamber. The transmission shaft is movably disposed through the medium housing, and one end of the transmission shaft extending into the medium housing is in driving connection with the transducer assembly; Wherein, along the first axis direction, at least 80% of the area of the orthographic projection of the first driving component coincides with the orthographic projection of the medium housing, and at least 80% of the area of the orthographic projection of the second driving component coincides with the orthographic projection of the medium housing.

Images