Ultrasonic beauty instrument and focus point depth adjusting mechanism thereof

Abstract

The invention discloses an ultrasonic beauty instrument and a focus point depth adjusting mechanism thereof. The focus point depth adjusting mechanism comprises a driving unit and a connecting unit connected between the driving unit and an ultrasonic transduction assembly. The connecting unit comprises a sliding assembly and a push rod shaft; the sliding assembly is connected to a driving shaft of the driving unit, the sliding assembly is provided with an inclined plane part, one end of the push rod shaft is connected with the inclined plane part, and the push rod shaft can move back and forth in the inclined plane extending direction of the inclined plane part; the driving unit drives the sliding assembly to move back and forth in the axial direction of the driving shaft. According to the ultrasonic transduction device, the connecting unit is arranged between the driving unit and the ultrasonic transduction assembly, the ultrasonic transduction assembly is driven to move back and forth through cooperation of the inclined face part and the push rod shaft of the sliding assembly in the connecting unit, focus depth adjustment of the ultrasonic transduction assembly is achieved, and the action depth of the focus point of ultrasonic waves on the skin is changed.

Description

Technical Field

[0001] This invention relates to the field of skin care equipment technology, and in particular to an ultrasonic beauty instrument and its focal point depth adjustment mechanism. Background Technology

[0002] With the improvement of economic level, the market for home beauty devices has been expanding year by year. Beauty devices such as HIFU, which were previously only seen in professional beauty salons, have also entered the market as a type of home care device after being miniaturized.

[0003] Currently, HIFU beauty devices on the market can be broadly categorized into two types based on their overall design. One type features an ultrasound probe window positioned along the handle's axis, with a mechanism for forward and backward movement along this axis to adjust the distance between the probe and the treatment area (adjusting the depth of ultrasound penetration). However, this type can cause discomfort when held, especially when using it on the face, requiring the user to raise their arm to ensure the head fits snugly. The other type uses a "knife"-shaped structure, with the ultrasound window on the side of the handle. This allows for greater comfort as the user doesn't need to raise their arm. However, in this type, the ultrasound head typically only moves horizontally (expanding the treatment area) and cannot change the depth of ultrasound penetration. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a focal point depth adjustment mechanism for an ultrasonic beauty device and an ultrasonic beauty device having the mechanism.

[0005] The technical solution adopted by the present invention to solve its technical problem is: to provide a focal point depth adjustment mechanism for an ultrasonic beauty instrument, including a driving unit and a connecting unit connected between the driving unit and the ultrasonic transducer assembly; The connecting unit includes a sliding component and a push rod shaft; the sliding component is connected to the drive shaft of the driving unit, the sliding component has an inclined surface, one end of the push rod shaft is connected to the inclined surface, and can move back and forth along the inclined surface extension direction of the inclined surface; The drive unit drives the sliding assembly to move back and forth in the axial direction of the drive shaft, and drives the push rod shaft to move back and forth along the inclined surface extension direction of the inclined surface, thereby pushing and pulling the ultrasonic transducer assembly to move back and forth in the axial direction of the push rod shaft.

[0006] Preferably, the sliding component includes a slider, and the inclined portion includes an inclined surface disposed on the surface of the slider facing the ultrasonic transducer component; the end face of the push rod shaft at one end abuts against the inclined surface and can move back and forth along the inclined surface.

[0007] Preferably, the inclined surface further includes a guide wall and a limiting pin; the guide wall is disposed on the surface of the slider facing the ultrasonic transducer assembly, and is located on at least one side of the inclined surface; the guide wall is provided with a stroke groove, the stroke groove extending parallel to the inclined surface on the guide wall; the push rod shaft is located on one side of the guide wall, and the limiting pin passes through the push rod shaft and is movably engaged in the stroke groove.

[0008] Preferably, the slider is a hollow base; the sliding assembly further includes a fixed sleeve fixedly sleeved on the drive shaft, the fixed sleeve fitting into the base and being fixed in the base by a fastening assembly.

[0009] Preferably, the connecting unit further includes a connecting bracket; the connecting bracket abuts against the driving unit, and the driving shaft of the driving unit extends into the connecting bracket; the sliding component is disposed in the connecting bracket and connected to the driving shaft, and can move back and forth relative to the connecting bracket as the driving shaft extends and retracts.

[0010] Preferably, the connecting bracket includes a base plate and a surrounding wall connected to the base plate, the base plate having a channel opening extending into the interior of the surrounding wall; the sliding component is disposed inside the surrounding wall; the connecting bracket abuts against the driving unit with the base plate, and the driving shaft of the driving unit extends into the interior of the surrounding wall through the channel opening and is connected to the sliding component.

[0011] Preferably, the enclosure wall has a baffle for cooperating with the medium housing on the side facing the ultrasonic transducer assembly, and the baffle has a push rod hole for the push rod shaft to pass through.

[0012] Preferably, the outer surface of the sliding component is provided with at least one protruding limiting block, and the enclosure wall is provided with a slot corresponding to the limiting block, and the limiting block is engaged in the slot; when the sliding component moves back and forth axially with the drive shaft, the limiting block moves back and forth along the slot.

[0013] Preferably, the drive unit includes a telescopic motor; and / or, the focus point depth adjustment mechanism further includes a drive circuit board electrically connected to the drive unit.

[0014] The present invention also provides an ultrasonic beauty device, including a handpiece, an ultrasonic transducer assembly, and a focal point depth adjustment mechanism as described in any one of the above. An ultrasonic window is provided on the side of the handle. The ultrasonic transducer and the focal depth adjustment mechanism are both housed in the handle, and the ultrasonic transducer is connected to the end of the push rod shaft of the focal depth adjustment mechanism. In the focal depth adjustment mechanism, the axial direction of the drive shaft of the drive unit is parallel to the axial direction of the handle, and the push rod shaft is perpendicular to the drive shaft; the focal depth adjustment mechanism drives the ultrasonic transducer assembly to move back and forth in the direction of approaching and moving away from the ultrasonic window, thereby adjusting the focal depth of the ultrasonic transducer assembly.

[0015] The beneficial effects of the present invention are as follows: A connecting unit is provided between the driving unit and the ultrasonic transducer assembly. Through the cooperation of the inclined part of the sliding component and the push rod shaft in the connecting unit, the axial movement driven by the driving unit is converted into the back-and-forth movement of the ultrasonic transducer assembly, thereby realizing the adjustment of the focal depth of the ultrasonic transducer assembly and changing the depth of action of the ultrasonic waves on the skin. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of the external structure of an ultrasonic beauty device according to an embodiment of the present invention; Figure 2 This is a schematic cross-sectional view of an ultrasonic beauty device according to an embodiment of the present invention along the axial direction; Figure 3 This is a partially exploded structural diagram of an ultrasonic beauty device according to an embodiment of the present invention; Figure 4 yes Figure 3 Exploded view of the outer casing of the middle handle; Figure 5 This is a schematic diagram of the ultrasonic transducer mechanism in an ultrasonic beauty device according to an embodiment of the present invention; Figure 6 yes Figure 5 An exploded view of the ultrasonic transducer mechanism shown. Figure 7 yes Figure 6 A schematic diagram of the first housing in the ultrasonic transducer mechanism shown from another angle; Figure 8 yes Figure 6 The diagram shows the structure of the deformable plate in the ultrasonic transducer mechanism. Figure 9 yes Figure 8 A schematic diagram of the back structure of the deformable piece shown; Figure 10 This is a schematic diagram of the focal point depth adjustment mechanism in an ultrasonic beauty device according to an embodiment of the present invention; Figure 11 yes Figure 10 An exploded view of the focus depth adjustment mechanism shown. Figure 12 yes Figure 11 A schematic diagram of the slider in the focus point depth adjustment mechanism shown; Figure 13 This is a schematic diagram illustrating the cooperation between the ultrasonic transducer mechanism and the focal point depth adjustment mechanism in an ultrasonic beauty device according to an embodiment of the present invention. Figure 14 This is a schematic diagram of the structure of the beauty component in an ultrasonic beauty device according to an embodiment of the present invention; Figure 15 yes Figure 14 An exploded view of the beauty components shown; Figure 16 yes Figure 15 The diagram shows the structure of the cosmetic component (with the sealing ring removed) from another angle.

[0017] Explanation of reference numerals in the attached figures: 10-Handle; 100-Ultrasonic window; 11-Outer shell; 111-Half shell; 12-Display screen; 13-Operation button group; 14-Baffle; 20-Ultrasonic transducer mechanism; 21-Medium shell; 210-Medium cavity; 201-Opening; 202-Acoustic membrane cover; 203-Liquid inlet; 204-End plug; 211-First shell; 212-Second shell; 213-Mating boss; 214- 215-Snap fastener; 216-Sealing ring; 217-Groove; 218-Protrusion; 219-Cable hole; 2110-Through hole; 2111-Sealing plug; 2112-Baffle; 2113-Slot; 22-Ultrasonic transducer assembly; 221-Ultrasonic transducer; 2211-Cable; 222-Mounting bracket; 230-Mounting hole; 23-Deformable piece; 231-Deformation area; 232-Securing... Assembly; 233-Reinforcing Rib; 30-Focus Point Depth Adjustment Mechanism; 31-Drive Unit; 311-Drive Shaft; 32-Connecting Unit; 321-Sliding Assembly; 3211-Slider; 322-Push Rod Shaft; 320-Beveled Part; 3201-Beveled Surface; 3202-Guide Wall; 3203-Limit Pin; 3204-Stroke Groove; 323-Connecting Bracket; 3231-Base Plate; 3232-Enclosure; 3233-Baffle; 3234-Storage Groove; 3235-Horizontal Bar; 324-Limit Block; 325-Slot; 33-Drive Circuit Board; 200-Beauty Component; 40-Cooling Compressor; 41-Semiconductor Cooling Chip; 411-Hot Surface; 412-Cold Surface; 50-Heat Discharge Base; 51-Central Channel; 60-Microcurrent Stimulation Module; 61-Microcurrent Circuit Board; 62-Conductive Component; 70- LED phototherapy unit; 71-LED lamp bead; 72-transmitting element; 80-sealing ring; 90-position sensor. Detailed Implementation

[0018] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0019] refer to Figures 1-3The ultrasonic beauty device of the present invention includes a handle 10, an ultrasonic transducer 20, and a focal point depth adjustment mechanism 30.

[0020] An ultrasound window 100 is provided on the side of the handle 10. The orientation of the ultrasound window 100 is not along the axis of the handle 10, but forms an angle with the axis of the handle 10. This angle can be an acute angle or a right angle. Both the ultrasound transducer 20 and the focal depth adjustment mechanism 30 are located inside the handle 10. The ultrasound transducer 20 is opposite to the ultrasound window 100, allowing the ultrasound waves generated by the ultrasound transducer 20 to pass through the ultrasound window 100 and penetrate the skin to achieve the desired therapeutic effect. The focal depth adjustment mechanism 30 is connected to the ultrasound transducer assembly 22 of the ultrasound transducer 20, driving the ultrasound transducer assembly 22 to move back and forth in directions approaching and away from the ultrasound window 100, adjusting the focal depth of the ultrasound waves on the skin to meet different skin depth treatment needs.

[0021] When using the device, the user holds the handle 10 and aligns the ultrasound window 100 with the skin area requiring treatment to perform ultrasound therapy. When treating facial skin, the user holds the handle 10 vertically near the facial skin, with the ultrasound window 100 close to or against the skin. To treat different areas, the user only needs to move the handle 10 up and down to move the ultrasound window 100 to perform ultrasound therapy on the skin at different heights on the face, without having to deliberately raise their arm.

[0022] The handle 10 can be a cylindrical structure. For easy gripping, the handle 10 can be a cylindrical or near-cylindrical structure, and may also have an arc-shaped concave or arc-shaped protrusion to accommodate finger grip.

[0023] The handle 10 further includes a hollow outer shell 11, the inner cavity of which is used to house the ultrasonic transducer 20, the focus depth adjustment mechanism 30, and other mechanisms. To facilitate the assembly of the above mechanisms, the outer shell 11 can be formed by mating two half-shells 111. The mating sides of the two half-shells 111 can be mated by at least one of the following methods: snap-fit, post hole fit, step fit, and screw fastening.

[0024] The outer surface of the outer shell 11 may also be provided with a soft padding layer (not shown) to improve the feel, enhance grip comfort, and also serve as an anti-slip measure. The soft padding layer may be made of materials such as silicone, but is not limited to these. The soft padding layer may preferably be located at the gripping position on the outer shell 11, or it may extend to other positions, or it may be provided on the entire surface of the outer shell 11, and can be flexibly set as needed.

[0025] The ultrasonic beauty device also includes a main control unit (not shown) disposed within the handle 10. The main control unit is electrically connected to the ultrasonic transducer 20, the focus depth adjustment mechanism 30, and the beauty component 200, controlling the start / stop and mode of each mechanism. The main control unit includes a main control circuit board, and a positioning area may be provided within the handle 10 for placing the main control circuit board. The positioning area may be defined by at least one of the following: a protruding column, a partition, etc., on the inner surface of the outer casing 11.

[0026] The handle 10 may also be equipped with a display screen 12 and / or an operation button group 13 that are electrically connected to the main control unit. The display screen 12 is used to display the start / stop mode of the ultrasonic beauty instrument, the working parameters of each mechanism, the working mode, etc., and the operation button group 13 is used as an on / off switch, mode selection switch, etc.

[0027] The ultrasonic beauty device also includes a power supply unit (not shown) located inside the handle 10 and electrically connected to the main control unit. The power supply unit provides power to the ultrasonic transducer mechanism 20, the focus point depth adjustment mechanism 30, and other components. The power supply unit includes a battery; the battery is a rechargeable battery, enabling wireless power supply to the ultrasonic beauty device. Alternatively, the ultrasonic beauty device can be powered by an external AC power source connected to the power supply unit.

[0028] The handle 10 may also contain a position sensor 90 that connects to the main control unit, such as... Figure 4 As shown in the diagram, the position sensor 90 can obtain the distance between the ultrasound window 100 and the skin through infrared light detection and other methods. The main control unit controls the focus point depth adjustment mechanism 30 to work by obtaining the distance information, thereby driving the ultrasound transducer mechanism 20 to move and realize the automatic focusing function.

[0029] An ultrasonic window 100 is disposed on the side of the handle 10, preferably on the side of at least one end, such that the orientation of the ultrasonic window 100 forms an angle with the axis of the handle 10, preferably being perpendicular to it. Corresponding to the ultrasonic window 100 being located at the end of the handle 10, an ultrasonic transducer mechanism 20 is disposed within the end of the handle 10.

[0030] Specifically, refer to Figure 2 , Figure 4 , Figures 5-7 The ultrasonic transducer 20 may include a dielectric housing 21 and an ultrasonic transducer assembly 22. The internal cavity of the dielectric housing 21 forms a dielectric cavity 210, which stores the ultrasonic wave transmission medium. The ultrasonic transducer assembly 22 is disposed within the dielectric cavity 210. During operation, the ultrasonic transducer assembly 22 is immersed in the ultrasonic wave transmission medium.

[0031] The media housing 21 can be fixed inside the outer casing 11 of the handle 10 by fastening components such as screws. For this purpose, a partition 14 can be provided inside the outer casing 11 to cooperate with the fastening components to fix the media housing 21.

[0032] The dielectric housing 21 is a hollow housing structure with an opening 201 at one end, and the end of the dielectric housing 21 with the opening 201 faces the ultrasonic window 100. An acoustic membrane cover 202 is sealed on the opening 201 to allow ultrasonic waves to pass through. The opening 201 and the acoustic membrane cover 202 thereon form the ultrasonic window 100.

[0033] The medium housing 21 may also be provided with a liquid filling port 203 and an end plug 204 that seals the liquid filling port 203. The ultrasonic transmission medium is filled into the medium cavity 210 through the liquid filling port 203, and the end plug 204 seals the liquid filling port 203 after the liquid filling is completed.

[0034] In some embodiments, the medium housing 21 includes a first housing 211 and a second housing 212 that are mated to each other. The first housing 211 may be a plate-like structure, and the second housing 212 may be a shell structure with a cavity, wherein a medium cavity 210 is formed between the mating first housing 211 and the second housing 212.

[0035] The opening 201 of the medium housing 21 is provided at the end of the second housing 212 facing away from the first housing 211, and then the sound-permeable membrane cover 202 is sealed and fitted on the end of the second housing 212 facing away from the first housing 211, sealing and covering the opening 201.

[0036] In one of the optional docking methods, the first housing 211 has a docking boss 213 on the side facing the second housing 212, and at least one latch 214 is provided on the periphery of the docking boss 213. The second housing 212 is open on the side facing the first housing 211, forming an opening side. The second housing 212 fits onto the docking boss 213 with its opening side, and the second housing 212 has at least one retaining ring 215 extending towards the first housing 211. After the first housing 211 and the second housing 212 are docked, the retaining ring 215 engages with the corresponding latch 214, and the second housing 212 and the first housing 211 are connected by fastening through the fastening of the retaining ring 215 and the latch 214.

[0037] The liquid inlet 203 is located in the first housing 211 or the second housing 212.

[0038] To improve the sealing performance at the joint between the first housing 211 and the second housing 212, the medium housing 21 also includes a sealing structure such as a sealing ring 216 for elastic sealing at the joint between the first housing 211 and the second housing 212. The sealing ring 216 may be made of elastic materials such as silicone.

[0039] To further improve the sealing performance at the mating point where the sealing ring 216 is located, the mating gap between the first housing 211 and the second housing 212 is preferably a non-linear gap, such as a bent gap. In one embodiment, the mating boss 213 of the first housing 211 and the open side of the second housing 212 are mated through a concave-convex structure, thereby making the mating gap at the joint of the first housing 211 and the second housing 212 bent. The sealing ring 216 fits within the concave-convex structure, that is, it is located within the mating gap.

[0040] exist Figure 6 In the illustrated embodiment, the concave-convex structure includes a matching groove 217 and a protrusion 218. The protrusion 218 is disposed on the mating boss 213 of the first housing 211, and the groove 217 is disposed on the opening side of the second housing 212. During mating, the second housing 212 is fitted onto the protrusion 218 with the groove 217 facing the first housing 211, while the retaining ring 215 of the second housing 212 extends to the side of the mating boss 213 and engages with the latch 214.

[0041] Corresponding to the concave-convex fit between the groove 217 and the protrusion 218, the sealing ring 216 has an annular groove, making the cross-section of the sealing ring 216 U-shaped. In this way, the sealing ring 216 can elastically fit in the groove 217 and be sleeved on the outside of the protrusion 218 through the annular groove, thereby being able to elastically deform and seal between the protrusion 218 and the groove 217.

[0042] The ultrasonic transducer assembly 22 further includes an ultrasonic transducer 221 and a mounting bracket 222. The ultrasonic transducer 221 is disposed within the mounting bracket 222, and the mounting bracket 222 is disposed within the media housing 21, thereby positioning the ultrasonic transducer 221 within the media housing 21 via the mounting bracket 222.

[0043] The main body of the ultrasonic transducer 221 is cylindrical, and the mounting bracket 222 is cylindrical to accommodate the main body of the ultrasonic transducer 221. The cable of the ultrasonic transducer 221 passes through the mounting bracket 222 and the dielectric housing 21 in sequence and is connected to the main control circuit board of the main control unit.

[0044] Specifically, the ultrasonic transducer assembly 22 is mainly housed in the second housing 212 of the medium housing 21, with the end of the ultrasonic transducer 221 facing the second housing 212 away from the first housing 211, i.e. facing the opening 201 and the sound-permeable membrane cover 202.

[0045] To facilitate the passage of the cable 2211 of the ultrasonic transducer 221, a cable routing hole 219 is provided on the dielectric housing 21. The cable routing hole 219 is further provided on the first housing 211 of the dielectric housing 21.

[0046] To facilitate the connection between the ultrasonic transducer assembly 22 and the focal depth adjustment mechanism 30, the first housing 211 is also provided with a through hole 2110, which is used for the connecting part of the focal depth adjustment mechanism 30 to pass into the first housing 211 to connect with the ultrasonic transducer 221 and drive the ultrasonic transducer 221 to move.

[0047] Furthermore, a sealing plug 2111 is provided inside the through hole 2110 to seal the gap between the connecting part of the focus depth adjustment mechanism 30 and the through hole 2110, so as to prevent leakage of the ultrasonic transmission medium in the medium cavity 210. The sealing plug 2111 can be, but is not limited to, a silicone ring.

[0048] In some embodiments, the ultrasonic transducer 20 further includes an elastic deformable piece 23, which is mounted on the medium housing 21 to balance the pressure in the medium cavity 210.

[0049] The medium housing 21 is provided with a mounting hole 230 that communicates with the medium cavity 210. The deformable piece 23 fits into the mounting hole 230 to close the mounting hole 230. According to the pressure change in the medium cavity 210, the deformable piece 23 deforms towards the outside of the medium housing 21 or towards the inside of the medium cavity 210 to balance the pressure in the medium cavity 210.

[0050] In an embodiment where the medium housing 21 has a first housing 211 and a second housing 212, a mounting hole 230 is provided on the first housing 211, so that the deformable piece 23 is mounted on the first housing 211.

[0051] The deformable piece 23 is made of silicone, TPU (thermoplastic polyurethane rubber) or nitrile rubber, etc.

[0052] Specifically, refer to Figure 6 , Figures 8-9 The deformable piece 23 may include a deformable area 231 and a mounting portion 232 connected to the outer periphery of the deformable area 231. The deformable area 231 has a buffering and springback function; the mounting portion 232 fits into the periphery of the mounting hole 230 and is adhered to the periphery of the mounting hole 230 by an adhesive such as silicone, so as to cover and fix the deformable piece 23 to the mounting hole 230.

[0053] The shape of the mounting hole 230 corresponds to the shape of the deformable piece 23. The shape of the deformable piece 23 can be a rectangle or other polygon, an ellipse or a circle, etc.

[0054] exist Figure 8 and Figure 9 In the embodiment shown, the deformation zone 231 includes a plurality of corrugated rings 2311, which are arranged at intervals and concentrically, and the width or diameter of the plurality of corrugated rings 2311 gradually increases from the center of the deformation zone 231 to the periphery.

[0055] Several corrugated rings 2311 are connected to each other by connecting rings 2312 to form a whole, so that in the deformation zone 231, the corrugated rings 2311 and the connecting rings 2312 are alternately connected. In the deformation zone 231, the corrugated rings 2311 are arranged to protrude in an arc shape relative to the connecting rings 2312.

[0056] In other embodiments, the deformable region 231 may include spirally coiled corrugations.

[0057] On the deformable piece 23, the deformable region 231 is concave relative to the mounting portion 232, causing the cross-section of the deformable piece 23 to have a certain curvature. On the medium housing 21, the deformable region 231 bends relative to the mounting portion 232 toward the medium cavity 210. When the pressure inside the medium cavity 210 increases, it drives the deformable region 231 of the deformable piece 23 to bend and deform toward the outside of the medium housing 21; when the pressure inside the medium cavity 210 decreases, the deformable region 231 bends and returns to its original shape toward the inside of the medium cavity 210. Specifically, in the initial state, the deformable region 231 bends toward the inside of the medium cavity 210 relative to the mounting portion 232, at which time the distance between the ultrasonic transducer 22 and the acoustic membrane cover 202 is at its maximum. When the focus depth adjustment mechanism 30 drives the ultrasonic transducer 221 to move toward the ultrasonic window 100 and the acoustic membrane cover 202, the deformable region 231 bends in the opposite direction as the pressure inside the medium cavity 210 changes.

[0058] To ensure that the deformable piece 23 recovers its original shape after deformation, the deformable piece 23 also includes at least one reinforcing rib 233. The reinforcing rib 233 is disposed on the side of the deformation zone 231 facing the medium cavity 210, which is also the back side of the deformable piece 23. In the deformation zone 231, the reinforcing rib 233 spans at least two corrugated rings 2311 and connects to the corrugated rings 2311 and the connecting rings 2312.

[0059] The mounting portion 232 may further include a limiting ring wall 2321 protruding towards the medium cavity 210, and a limiting ring groove 2322 provided on the outer periphery of the mounting hole 230. The limiting ring wall 2322 fits into the limiting ring groove 2321, thereby positioning the deformable piece 23 on the mounting hole 230. Adhesive or similar material may be used to bond the limiting ring wall 2322 and the limiting ring groove 2321 together.

[0060] Furthermore, in order to limit the deformation of the deformable piece 23, a baffle can be provided on the outside of the mounting hole 230.

[0061] In one embodiment, the first housing 211 where the mounting hole 230 is located may be provided with a baffle 2112, which is arranged circumferentially along the first housing 211 and defines a groove 2113 on the first housing 211 for the baffle to engage therein. The mounting hole 230 is located in the groove 2113, and the baffle limits the deformation of the deformable piece 23 on the mounting hole 230 within the groove 2113.

[0062] Understandably, the groove 2113 can also be formed by providing a groove on the first housing 211.

[0063] like Figures 2-3 As shown, the focal depth adjustment mechanism 30 provides power to drive the ultrasonic transducer 22 to move and adjust its focal depth. The focal depth adjustment mechanism 30 corresponds to the ultrasonic transducer 22 being located within one end of the handle 10.

[0064] In some embodiments, such as Figures 2-3 As shown, the focus depth adjustment mechanism 30 includes a drive unit 31 and a connecting unit 32; the connecting unit 32 is connected between the drive unit 31 and the ultrasonic transducer assembly 22. Within the handle 10, the drive shaft 311 of the drive unit 31 is parallel to the axial direction of the handle 10, or forms a certain angle (such as an acute angle) with the axial direction of the handle 10; the connecting unit 32, located between the drive unit 31 and the ultrasonic transducer assembly 22, steers the drive direction of the drive unit 31 to drive the ultrasonic transducer assembly 22.

[0065] refer to Figure 2 , Figures 10-12 The drive unit 31 may include a drive motor, more preferably a telescopic motor. The connection unit 32 may further include a sliding assembly 321 and a push rod shaft 322. The sliding assembly 321 is connected to the drive shaft 311 of the drive unit 31. The push rod shaft 322 is arranged laterally relative to the vertical drive shaft 311 and is connected to the sliding assembly 321.

[0066] The sliding assembly 321 has a beveled portion 320. One end of the push rod shaft 322 is connected to the beveled portion 320 and can move back and forth along the beveled extension direction of the beveled portion 320. The other end of the push rod shaft 322 is connected to the ultrasonic transducer assembly 22. The drive unit 31 drives the sliding assembly 321 to move back and forth in the axial direction of the drive shaft 311, and drives the push rod shaft 322 to move back and forth along the beveled extension direction of the beveled portion 320. The push rod shaft 322 pushes and pulls the ultrasonic transducer assembly 22 back and forth in the direction of approaching and moving away from the ultrasonic window 100.

[0067] The sliding component 321 may specifically include a slider 3211, and the inclined portion 320 includes an inclined surface 3201, which is disposed on the surface of the slider 3211 facing the ultrasonic transducer component 22. The end face of the push rod shaft 322 is inclined at one end and abuts against the inclined surface 3201, and can move back and forth along the inclined surface 3201.

[0068] To improve the stability of the fit between the push rod shaft 322 and the slider 3211, the inclined surface 320 also includes a guide wall 3202 and a limiting pin 3203. The guide wall 3202 is disposed on the surface of the slider 3211 facing the ultrasonic transducer assembly 22, and is located on at least one side of the inclined surface 3201. The guide wall 3202 is provided with a stroke groove 3204, which extends parallel to the inclined surface 3201 on the guide wall 3202. The push rod shaft 322 is located on one side of the guide wall 3202, and the limiting pin 3203 passes through the push rod shaft 322 and is movably engaged within the stroke groove 3204.

[0069] When the drive unit 31 drives the slider 3211 to move up and down with the extension and retraction of the drive shaft 311, the inclined surface 320 moves synchronously with the slider 3211, thereby driving the push rod shaft 322 to move relative to the inclined surface 3201. At the same time, the limiting pin 3203 moves back and forth along the stroke groove 3204 in the extension direction of the stroke groove 3204, which guides the movement of the push rod shaft 322 and also limits the stroke.

[0070] In an embodiment where the inclined section 320 includes two guide walls 3202, the two guide walls 3202 are arranged at intervals relative to each other, and an inclined groove is defined on the inclined surface between the two guide walls 3202. One end of the push rod shaft 322 is fitted into the inclined groove and connected between the guide walls 3202 by a limiting pin 3203.

[0071] Furthermore, in one embodiment, reference is made to... Figures 11-12 The slider 3211 is a hollow base; the sliding assembly 321 also includes a fixing sleeve 3212, which is fitted into the base and fixed in the base by a fastening assembly, so that the fixing sleeve 3212 and the slider 3211 are relatively fixed.

[0072] The fixed sleeve 3212 is used to fix it on the drive shaft 311 of the drive unit 31, so that the sliding component 321 is connected to the drive shaft 311 and fixed relative to the drive shaft 311, and can move up and down with the extension and retraction of the drive shaft 311.

[0073] Furthermore, the connecting unit 32 may also include a connecting bracket 323, which abuts against the driving unit 31, and the driving shaft 311 of the driving unit 31 passes through the connecting bracket 323. A sliding component 321 is disposed within the connecting bracket 323 and sleeved on the driving shaft 311; the sliding component 321 can move relative to the connecting bracket 323 with the driving shaft 311, for example, it can move back and forth in the height direction of the connecting bracket 323 with the extension and retraction of the driving shaft 311.

[0074] The connecting bracket 323 can be a frame structure, specifically including a base plate 3231 and a surrounding wall 3232 connected to the base plate 3231. The base plate 3231 has a channel opening that extends into the interior of the surrounding wall 3232. The sliding component 321 is disposed inside the surrounding wall 3232. The connecting bracket 323 abuts against the driving unit 31 with the base plate 3231. The driving shaft 311 of the driving unit 31 extends into the interior of the surrounding wall 3232 through the channel opening and connects with the sliding component 321.

[0075] A limiting structure may be provided between the slider 3211 of the sliding assembly 321 and the inner wall of the enclosure 3232 to restrict the slider 3211 from rotating relative to the enclosure 3232. The limiting structure includes, but is not limited to, a limiting block 324 and a slot 325 that mates with the limiting block 324. In one embodiment, as... Figure 11 As shown, the limiting block 324 protrudes from the outer surface of the sliding assembly 321, specifically the outer surface of the slider 3211; the slot 325 is provided on the enclosure 3232, and the limiting block 324 is engaged within the slot 325, so that the slider 3211 is circumferentially positioned within the enclosure 3232. When the sliding assembly 321 moves back and forth along the axial direction of the drive shaft 311 as it extends and retracts, the limiting block 324 moves back and forth along the slot 325.

[0076] To limit the rotation of slider 3211 relative to enclosure wall 3232, the outer circumference of slider 3211 and the inner circumference of enclosure wall 3232 can be non-circular, and the aforementioned limiting structure may not be required. Alternatively, a non-circular design can be combined with a limiting structure. The bottom of slot 325 stops at the base plate 3231, limiting the downward travel of sliding component 321 and preventing excessive downward travel that could cause the ultrasonic transducer 22 to move out of the ultrasonic window 100.

[0077] In some embodiments, the connecting bracket 323 may further include a baffle 3233, which is disposed on the side of the enclosure 3232 facing the ultrasonic transducer assembly 22. The baffle 3233 has a push rod hole for the push rod shaft 322 to pass through. The baffle 3233 can further be used to fit and fix in the groove 2113 of the medium housing 21, so that the connecting unit 32 can dock with the medium housing 21, while the baffle 3233 blocks the outside of the deformable piece 23 to limit the deformation of the deformable piece 23.

[0078] The baffle 3233 may be provided with a receiving groove 3234 at the position corresponding to the deformable piece 23, which is used to receive the deformable piece 23 when it deforms outward relative to the medium cavity 210. At the same time, a crossbar 3235 is provided on the side of the receiving groove 3234 away from the deformable piece 23 to prevent the deformable piece 23 from falling out through the receiving groove 3234.

[0079] The focus depth adjustment mechanism 30 further includes a drive circuit board 33, which is electrically connected to the drive unit 31. Alternatively, the drive circuit board 33 can be disposed on one side of the connecting bracket 323 and fixed to the connecting bracket 323 by fasteners such as screws.

[0080] Combination Figure 5 , Figure 10 and Figure 13 When the focus depth adjustment mechanism 30 cooperates with the ultrasonic transducer mechanism 20, the end of the push rod shaft 322 of the focus depth adjustment mechanism 30 away from the connecting unit 32 passes through the sealing plug 2111 and enters the medium housing 21, connecting with the ultrasonic transducer assembly 22 inside the medium housing 21. At the same time, the baffle 3233 is fitted into the groove 2113, so that the baffle 3233 is limited to the outside of the deformable piece 23.

[0081] In some embodiments, the ultrasonic beauty device may further include a beauty component 200, which is disposed on the side of the handle 10 and cooperates with the ultrasonic window 100. The beauty component 200 has at least a cooling function, which can alleviate the ultrasonic burning sensation caused by ultrasonic treatment and improve the user experience.

[0082] The beauty component 200 and the ultrasonic transducer 20 are both located at the end of the handle 10, and the skin is cared for from the side of the handle 10.

[0083] like Figures 2-4 As shown, in order to accommodate the beauty component 200, the handle 10 has an opening 120 on its side and an annular cover 121 independent of the opening 120. The beauty component 200 is disposed in the opening 120. The cover 121 can be fixed to the opening 120 by at least one of the following methods: snap-fit, fastening, and fastener connection, so as to encapsulate the beauty component 200 in the opening 120 and prevent the beauty component 200 from falling out.

[0084] In an embodiment where the outer shell 11 of the handle 10 has two half-shells 111, one half-shell 111 serves as the front shell and the other half-shell 111 serves as the back shell. The ultrasonic window 100 and the opening 120 are both disposed on the half-shell 111 serving as the front shell, and the ultrasonic window 100 is also located within or exposed within the opening 120.

[0085] refer to Figure 1 and Figures 14-16 The beauty component 200 has at least a cooling function, and includes a cooling element 40 that surrounds the outer periphery of the ultrasound window 100 or is located on at least one side of the ultrasound window 100. The cooling element 40 may be made of a non-conductive material such as sapphire or metal.

[0086] Corresponding to the cooling patch 40, the beauty assembly 200 may further include a thermoelectric cooler 41. The thermoelectric cooler 41 has a hot surface 411 and a cold surface 412 facing each other, with the hot surface 411 facing inwards towards the opening 120. The cooling patch 40 is located on the cold surface 412 side of the thermoelectric cooler 41 and is in contact with the cold surface 412. The cables of the thermoelectric cooler 41 are electrically connected to the main control circuit board.

[0087] The beauty component 200 may also include a heat sink 50, which serves as a support base for the beauty component 200 and also has a heat dissipation function. The heat sink 50 is disposed at the opening 120 and fits on one side of the ultrasonic transducer 20. The heat sink 50 has a central channel 51, forming a ring-shaped structure. The output end of the ultrasonic transducer 20 (the end with the acoustic membrane cover 202) faces the heat sink 50 and is located within the central channel 51 of the heat sink 50, and the corresponding portion of the central channel 51 also forms an ultrasonic window 100.

[0088] The cooling patch 40 is preferably a ring-shaped structure, disposed on one side of the heat sink 50 and surrounding the outer periphery of the central channel 51.

[0089] In some embodiments, reference Figure 1 and Figures 14-16 The beauty component 200 also includes a microcurrent stimulation module 60 (such as an EMS electrical stimulation component), which can stimulate the skin with microcurrents to produce lifting and firming effects. The microcurrent stimulation module 60 may surround the outer periphery of the ultrasound window 100 or be located on at least one side of the ultrasound window 100.

[0090] The microcurrent stimulation module 60 may further include a microcurrent circuit board 61 and a conductive component 62 electrically connected to the microcurrent circuit board 61. The conductive component 62 is disposed on the outer periphery or at least one side of the ultrasound window 100 and is flush with the cooling compress 40, so that the cooling surface of the cooling compress 40 and the electrical stimulation surface of the conductive component 62 are on the same side, which facilitates corresponding skin care. The cooling effect of the cooling compress 40 also helps to reduce the burning sensation on the skin caused by microcurrent stimulation.

[0091] The microcurrent circuit board 61 is electrically connected to the main control circuit board via a cable, such as a flexible flat cable 611. The conductive component 62 may include a first conductive element and a second conductive element forming a positive and negative electrode, respectively. The first and second conductive elements can be combined to form a ring-shaped conductive structure surrounding the outer periphery of the ultrasound window 100, and may also surround the outer periphery or be located within the inner periphery of the cold compress 40. Alternatively, the metal cold compress 40 may also be electrically connected to the microcurrent circuit board 61, or the cold compress 40 may have a metal component electrically connected to the microcurrent circuit board 61, allowing the cold compress 40 to cooperate with the conductive component 62, forming a positive and negative electrode, respectively. The conductive component 62 surrounds the outer periphery or is located within the inner periphery of the cold compress 40.

[0092] Together with the heat sink 50, the microcurrent stimulation module 60 has an overall ring structure, which is set on one side of the heat sink 50 and surrounds the outer periphery of the central channel 51.

[0093] In some embodiments, reference Figure 1 and Figures 14-16 The beauty component 200 also includes an LED light therapy unit 70 for applying light therapy to the skin. The LED light therapy unit 70 may surround the outer periphery of the ultrasound window 100 or be located on at least one side of the ultrasound window 100.

[0094] The LED phototherapy unit 70 includes several LED beads 71 ​​and light-transmitting elements 72 corresponding to the LED beads 71. The light-transmitting elements 72 are flush with the cooling compressor 40 and can surround the outer periphery or be located on the inner periphery of the cooling compressor 40. The light emitted by the LED beads 71 ​​passes through the light-transmitting elements 72 and is emitted outward, acting on the skin. The LED beads 71 ​​can be LED beads that emit red light, LED beads that emit near-infrared light, LED beads that emit far-infrared light, or LED beads with mixed wavelengths.

[0095] Together with the heat sink 50, the LED light therapy unit 70 has an overall ring structure, which is set on one side of the heat sink 50 and surrounds the outer periphery of the central channel 51.

[0096] The aforementioned microcurrent stimulation module 60 and LED phototherapy unit 70 can be arbitrarily combined with the cooling compress component 40, so that the ultrasonic beauty device integrates ultrasonic waves, cooling compresses and microcurrent stimulation functions, or integrates ultrasonic waves, cooling compresses and phototherapy functions, or integrates ultrasonic waves, cooling compresses, microcurrent stimulation and phototherapy functions, thus realizing the multi-functionality of the ultrasonic beauty device.

[0097] exist Figures 14-16 In the embodiment shown, the beauty component 200 includes a cooling compress 40, a microcurrent stimulation module 60, and an LED phototherapy unit 70.

[0098] The microcurrent circuit board 61 of the microcurrent stimulation module 60 is ring-shaped and mounted on the heat sink 50. The semiconductor cooling chip 41 is exposed on the inner ring of the microcurrent circuit board 61. The conductive component 62 of the microcurrent stimulation module 60 is ring-shaped and mounted on the side of the microcurrent circuit board 61 facing away from the heat sink 50. Several LED beads 71 ​​of the LED phototherapy unit 70 are mounted on the microcurrent circuit board 61, eliminating the need for a separate LED circuit board. The light-transmitting component 72 is ring-shaped and mounted on the side of the microcurrent circuit board 61 facing away from the heat sink 50. The cooling component 40 is ring-shaped, with one side passing through the inner ring of the microcurrent circuit board 61 and contacting the semiconductor cooling component 41. The inner ring space of the cooling component 40 forms an ultrasonic window 100. With the above configuration, the working end of the beauty component 200, from the center outwards, consists of the ultrasonic window 100, the cooling component 40, the light-transmitting component 72, and the conductive component 62.

[0099] The beauty component 200 is housed within the opening 120 of the handle 10, and the cover 121 is fitted around the outer periphery of the beauty component 200 and connected to the opening 120. A sealing ring 80 is also provided between the cover 121 and the outer periphery of the beauty component 200 to achieve a seal.

[0100] When using the ultrasonic beauty device of this invention, the user can select and activate the corresponding function according to their own skincare needs, and then bring the side of the ultrasonic window 100 close to or against the skin for corresponding treatment. When the ultrasonic function is selected, the user can also adjust the depth of the ultrasonic focus point to achieve ultrasonic treatment for skin at different depths.

[0101] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A focusing point depth adjustment mechanism of an ultrasonic cosmetic instrument, characterized by, The connecting unit comprises a sliding assembly and a push rod shaft; the sliding assembly is connected to the driving shaft of the driving unit, and the sliding assembly is provided with a slope portion, and one end of the push rod shaft is connected to the slope portion and can move back and forth along the slope extension direction of the slope portion; The driving unit drives the sliding assembly to move back and forth in the axial direction of the driving shaft, drives the push rod shaft to move back and forth along the slope extension direction of the slope portion, and drives the ultrasonic transducing assembly to move back and forth in the axial direction of the push rod shaft through the push rod shaft. The sliding assembly comprises a sliding block, and the slope portion comprises a slope provided on the surface of the sliding block facing the ultrasonic transducing assembly; the end face of the corresponding end of the push rod shaft abuts against the slope and can move back and forth along the slope.

2. The focal point depth adjustment mechanism according to claim 1, characterized by, The slope portion further comprises a guide wall and a limiting pin; 3. The focal point depth adjustment mechanism according to claim 2, wherein The guide wall is provided on the surface of the sliding block facing the ultrasonic transducing assembly and is located at least one side of the slope; the guide wall is provided with a stroke groove extending on the guide wall in parallel with the slope; The push rod shaft is located at one side of the guide wall, and the limiting pin is movably fitted in the stroke groove. The sliding block is a hollow seat body; the sliding assembly further comprises a fixing sleeve fixedly sleeved on the driving shaft, and the fixing sleeve is fitted in the seat body and is fixed in the seat body through a fastening assembly.

4. The focal point depth adjustment mechanism according to claim 2, characterized by, The connecting unit further comprises a connecting support; the connecting support abuts against the driving unit, and the driving shaft of the driving unit extends into the connecting support; 5. The focal point depth adjustment mechanism of claim 1, wherein, The sliding assembly is arranged in the connecting support and is connected to the driving shaft and can move back and forth relative to the connecting support along with the extension and retraction of the driving shaft. The connecting support comprises a bottom plate and a surrounding wall connected to the bottom plate, and the bottom plate is provided with a passage opening penetrating into the interior of the surrounding wall; 6. The focal point depth adjustment mechanism of claim 5, wherein, The sliding assembly is arranged in the interior of the surrounding wall; the connecting support abuts against the driving unit with the bottom plate, and the driving shaft of the driving unit extends into the interior of the surrounding wall through the passage opening and is connected to the sliding assembly. One side of the surrounding wall facing the ultrasonic transducing assembly is provided with a baffle for cooperation with a medium shell, and the baffle is provided with a push rod hole for the push rod shaft to pass through.

7. The focal point depth adjustment mechanism of claim 6, wherein, The outer surface of the sliding assembly is provided with at least one protruding limiting block, the surrounding wall is provided with a slot corresponding to the limiting block, and the limiting block is clamped in the slot; when the sliding assembly moves back and forth in the axial direction along with the driving shaft, the limiting block moves back and forth along the slot.

8. The focal point depth adjustment mechanism of claim 6, wherein, The driving unit comprises a telescopic motor; and / or, the focal point depth adjusting mechanism further comprises a driving circuit board electrically connected to the driving unit.

9. The focal depth adjustment mechanism of any of claims 1-8, wherein, The handle, the ultrasonic transducing assembly and the focal point depth adjusting mechanism according to any one of claims 1-9 are comprised.

10. An ultrasonic cosmetic device, characterized by, The side surface of the handle is provided with an ultrasonic window, the ultrasonic transducing assembly and the focal point depth adjusting mechanism are accommodated in the handle, and the ultrasonic transducing assembly is connected to the end of the push rod shaft of the focal point depth adjusting mechanism. ​ The driving shaft of the driving unit is parallel to the axial direction of the handle, and the push rod shaft is perpendicular to the driving shaft; the focus point depth adjusting mechanism drives the ultrasonic transducing assembly to move back and forth in the direction close to and away from the ultrasonic window, and adjusts the focus point depth of the ultrasonic transducing assembly.

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