Cutter head and skin treatment device

Abstract

The utility model discloses a cutter head and a skin treatment device, and the cutter head comprises a shell, a cutter head and a driving device, the transducer assembly is mounted in the mounting cavity, and the transducer assembly comprises an assembly bracket, a rolling piece, a mounting bracket and an ultrasonic transducer; the ultrasonic transducer is mounted on the mounting bracket, and the mounting bracket and the assembling bracket can be connected in a relative movement manner in a first direction; corresponding to the joint of the mounting bracket and the assembling bracket, the mounting bracket is provided with a first rolling groove, and the assembling bracket is provided with a second rolling groove; at least part of the rolling part is located in the first rolling groove, and at least part of the rolling part is located in the second rolling groove, so that rolling friction is generated when the assembling support and the mounting support move relatively; the driving mechanism is mounted on the assembling bracket, and the driving mechanism is in driving connection with the mounting bracket and is used for driving the mounting bracket and the ultrasonic transducer to move relative to the assembling bracket; the ultrasonic transducer is used for generating ultrasonic energy. According to the technical scheme, friction between the mounting support and the assembling support can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to cosmetic technology field, especially a kind of knife head and skin processing device. BACKGROUND

[0002] Ultrasonic nursing is a common nursing means in medical beauty industry. When the ultrasonic nursing instrument is nursing, the transducer inside the nursing handle is used to form focused ultrasound, so that the lower layer of the skin forms a nursing point, and the anti-aging and lifting effect is achieved. For example, the ultrasonic nursing instrument exceeds the depth limit of traditional non-surgical equipment, penetrates the SMAS (Superficial Musculo-Aponeurotic System) fascia layer, and the ultrasonic energy is concentrated at the nursing point to generate high temperature, so that the target tissue shrinks under high temperature and stimulates collagen regeneration, achieving the effects of anti-aging, wrinkle removal, tightening, lifting and shrinking contour. The energy wave generated by the transducer can directly act on the fascia layer to make the fascia layer shrink.

[0003] In order to reduce the frequency of moving the ultrasonic nursing instrument by the user, the transducer is arranged to be movable relative to the shell of the product. During the movement of the transducer, friction will be generated between the moving support of the transducer and the fixed support, which will cause slight vibration of the transducer. This will cause the direction of the ultrasonic wave emitted by the transducer to deviate, so that the ultrasonic wave may not reach the specified depth of the skin layer, affecting the nursing effect. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a kind of knife head, to improve the ultrasonic physiotherapy effect of skin processing device.

[0005] To achieve the above purpose, the utility model provides a knife head for skin processing device, the knife head comprises:

[0006] The shell has a mounting cavity and a sound wave outlet.

[0007] The transducer assembly is installed in the mounting cavity, and the transducer assembly comprises an assembly support, a rolling element, a mounting support and an ultrasonic transducer. The ultrasonic transducer is installed on the mounting support, and the mounting support is movably connected with the assembly support in the first direction. The mounting support has a first rolling groove corresponding to the connection between the mounting support and the assembly support, and the assembly support has a second rolling groove. At least part of the rolling element is located in the first rolling groove and at least part of the rolling element is located in the second rolling groove, so that rolling friction occurs when the assembly support and the mounting support move relative to each other.

[0008] A driving mechanism is mounted on the mounting bracket, and the driving mechanism is in driving connection with the mounting bracket for driving the mounting bracket and the ultrasonic transducer to move relative to the mounting bracket; the ultrasonic transducer is used for generating ultrasonic energy which is emitted into the skin from the sound wave outlet.

[0009] Optionally, one of the mounting bracket and the mounting bracket has a sliding groove, and the other has a sliding block which is in sliding cooperation with the sliding groove.

[0010] The side wall of the sliding block is provided with the first rolling groove, and the groove wall of the sliding groove is provided with the second rolling groove; or,

[0011] The side wall of the sliding block is provided with the second rolling groove, and the groove wall of the sliding groove is provided with the first rolling groove.

[0012] Optionally, the first rolling groove is arranged on the opposite two sides of the sliding block, the second rolling groove is arranged on the opposite two groove walls of the sliding groove, the number of the rolling members is multiple, and the multiple rolling members are distributed on the two sides of the sliding block; the sliding block is suspended in the sliding groove through the rolling members.

[0013] Optionally, the mounting bracket comprises a mounting seat and the sliding block connected with the mounting seat, the ultrasonic transducer is mounted on the mounting seat, and the first rolling groove is formed in the sliding block.

[0014] Optionally, the tool bit further comprises a rolling bracket, the rolling bracket comprises a mounting portion and an abutting portion connected with the mounting portion.

[0015] The mounting portion is located between the first rolling groove and the second rolling groove, the mounting portion is provided with a mounting hole, and at least part of the rolling member is located in the mounting hole.

[0016] The abutting portion is located at the end of the mounting bracket, so as to abut against the abutting portion when the mounting bracket moves, thereby driving the rolling bracket to move.

[0017] Optionally, one of the mounting bracket and the mounting bracket has a sliding groove, and the other has a sliding block which is in sliding cooperation with the sliding groove.

[0018] The two side walls of the sliding block in the length direction are both provided with the first rolling groove, and the two groove walls of the sliding groove are both provided with the second rolling groove.

[0019] The number of the mounting portions is two, and the two mounting portions are respectively arranged corresponding to the two first rolling grooves and the two second rolling grooves; the number of the abutting portions is two, and the two abutting portions are respectively arranged corresponding to the two end walls of the sliding block.

[0020] Optionally, the rolling bracket further comprises a base plate, and the two mounting portions and the two abutting portions are connected to the base plate.

[0021] The sliding block with the first rolling groove is accommodated in a space surrounded by the base plate, the two mounting portions and the two abutting portions.

[0022] Optionally, a first movable gap is left between the sliding block and the base plate; and / or,

[0023] A second movable gap is left between the base plate and the bottom of the sliding groove; and / or,

[0024] The mounting hole has a hole diameter greater than or equal to the maximum radial dimension of the rolling member.

[0025] Optionally, the mounting bracket comprises a sliding block and a transmission block connected to the sliding block, and the assembly bracket has a sliding groove, the sliding block and the sliding groove are in sliding fit;

[0026] The driving mechanism comprises a driving motor and a transmission mechanism, the driving motor is drivingly connected to the transmission mechanism, and the transmission mechanism is drivingly connected to the transmission block.

[0027] Optionally, the transmission block extends from one side of the sliding block to one side of the assembly bracket along the groove of the sliding groove;

[0028] The transmission mechanism comprises a transmission gear and a transmission rack, the transmission rack is arranged on the side of the transmission block away from the sliding block, the transmission gear is fixedly connected to the driving shaft of the driving motor and is in meshing engagement with the transmission rack.

[0029] Optionally, the rolling member is a ball; and / or,

[0030] The first rolling groove is an arc-shaped groove; and / or, the second rolling groove is an arc-shaped groove; and / or,

[0031] The assembly bracket comprises a first bracket and a second bracket in detachable connection, the driving mechanism is mounted on the first bracket, and the second rolling groove is formed in the second bracket; and / or,

[0032] The first direction is a direction parallel to the sound wave outlet; and / or,

[0033] The housing comprises a guide column mounted on the cavity wall of the mounting cavity in a second direction, the assembly bracket is slidably mounted on the guide column, the second direction is parallel to the sound wave outlet, and the first direction is arranged at an angle to the second direction.

[0034] The utility model discloses still propose a skin processing device, including cutter head and handheld piece, the cutter head sets up one end of handheld piece at,

[0035] Among them, the cutter head includes:

[0036] The shell has a mounting cavity;

[0037] The transducer assembly includes an assembly bracket, a mounting bracket, and an ultrasonic transducer.

[0038] The rolling member is at least partially located in the first rolling groove and at least partially located in the second rolling groove, so that rolling friction occurs when the assembly bracket and the mounting bracket move relative to each other.

[0039] The driving mechanism is drivingly connected to the mounting bracket for driving the mounting bracket and the ultrasonic transducer to move relative to the assembly bracket.

[0040] In the technical solution of the utility model, the transducer assembly is arranged to include an assembly bracket, a mounting bracket, and an ultrasonic transducer (wherein the ultrasonic transducer is mounted on the mounting bracket), and the mounting bracket has a first rolling groove corresponding to the connection between the mounting bracket and the assembly bracket, and the assembly bracket has a second rolling groove. At the same time, the rolling member is arranged to be located in both the first rolling groove and the second rolling groove, so that the mounting bracket and the assembly bracket are not in direct contact but are connected through the rolling member. When the driving mechanism drives the mounting bracket (with the ultrasonic transducer assembled) to move relative to the assembly bracket, the rolling member rolls in the first rolling groove and the second rolling groove, avoiding sliding friction between the assembly bracket and the mounting bracket. This ensures that the ultrasonic transducer does not produce large vibrations or shaking due to sliding friction during operation, and the focal point position after focusing is stable and accurate, so that the ultrasonic wave can be accurately sent to the specified skin depth, ensuring the accuracy of the ultrasonic treatment position and the effectiveness of the ultrasonic treatment. At the same time, the rolling member arrangement makes the friction between the mounting bracket and the assembly bracket during relative movement rolling friction, greatly reducing the loss caused by movement, which is beneficial to improve the service life of the skin treatment device. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without creative labor.

[0042] Figure 1 It is a structural schematic view of an embodiment of the skin treatment device of the present application.

[0043] Figure 2 It is a structural schematic view of an embodiment of the skin treatment device of the present application. Figure 1 It is a structural schematic view of an embodiment of the skin treatment device of the present application.

[0044] Figure 3 It is a structural schematic view of an embodiment of the skin treatment device of the present application.

[0045] Figure 4 It is a structural schematic view of an embodiment of the skin treatment device of the present application.

[0046] Figure 5 It is a structural schematic view of an embodiment of the skin treatment device of the present application.

[0047] Figure 6 It is a structural schematic view of an embodiment of the skin treatment device of the present application. Figure 5 It is a structural schematic view of an embodiment of the skin treatment device of the present application.

[0048] Figure 7 It is a structural schematic view of an embodiment of the skin treatment device of the present application. Figure 5 It is a structural schematic view of an embodiment of the skin treatment device of the present application.

[0049] Figure 8 It is a structural schematic view of an embodiment of the skin treatment device of the present application. Figure 5 It is a structural schematic view of an embodiment of the skin treatment device of the present application.

[0050] Explanation of the drawing reference numbers:

[0051]

[0052]

[0053] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0055] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0056] In addition, the description of "first", "second" and the like in the present utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three schemes, for example, A and / or B includes A technical solution, B technical solution, and A and B simultaneously meet the technical solution; in addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present utility model.

[0057] The utility model mainly proposes a knife head 20 and skin processing device, mainly used for nursing treatment to human skin, mainly through the realization of cosmetic, lifting, wrinkle removal and other cosmetic effects by ultrasonic wave into skin, in the application, ultrasonic cosmetic instrument, ultrasonic nursing instrument and the like are taken as examples. In particular, the skin processing device in the application can be called ultrasonic knife to match the name of the knife head, that is, the ultrasonic knife includes the knife head and the handheld part. The skin processing device in the application has a plurality of different improvement points, for example, the driving form and structure of the transducer, the structural design of the water pressure fluctuation generated during the movement of the balanced transducer and the like, which will be embodied in different embodiments respectively. The following embodiments will specifically introduce the specific structure of the skin processing device. The skin processing device usually includes a handheld part and a physiotherapy head, the handheld part is used for people to hold when using, and the physiotherapy head can have various forms, such as ultrasonic head, light therapy head and the like. The handheld part and the physiotherapy head can be fixedly connected and integrally arranged, or can be detachably arranged in a split mode.

[0058] In order to facilitate the understanding of the technical solutions of the present application, the working principle of the important scheme of the present application is briefly introduced. The skin treatment device includes a handpiece 10 and a knife head 20. The handpiece 10 includes a driving assembly 210, a transmission shaft 250 in driving connection with the driving assembly 210, and a first magnetic member 260 provided at the driving end of the transmission shaft 250. The knife head 20 includes a shell 600, a transducer assembly 700 and a sealing connection assembly 800 provided in the shell 600. The shell 600 has a sound wave outlet 611 for emitting ultrasonic waves. The sealing connection assembly 800 includes a sealing telescopic tube 810 and a second magnetic member 820 fixedly installed in the sealing telescopic tube 810. The shell 600 is detachably installed on the handpiece 10. The transmission shaft 250 is used to extend into the sealing telescopic tube 810 and is used to be magnetically connected with the second magnetic member 820 through the first magnetic member 260, so as to drive the transducer assembly 700 to move in a second direction. A driving mechanism 900 is provided in the knife head 20. The driving mechanism 900 is in driving connection with the transducer assembly 700. The driving mechanism 900 is used to drive the ultrasonic transducer 750 to move in a first direction. The second direction and the first direction are different directions (in some other embodiments, they can be the same direction). The plane determined by the second direction and the first direction is a path plane. The path plane is parallel to the sound wave outlet 611, for example, the two are arranged in parallel. The second direction can be consistent with the length direction of the skin treatment device, and the first direction can be consistent with the width direction of the knife head. In order to balance the hydraulic pressure generated when the ultrasonic wave moves, a balance telescopic tube 830 is further provided in the shell. The balance telescopic tube is in communication with the outside of the shell. The communication mode can be that the balance telescopic tube is in communication with the outside through a vent hole on the shell, or the balance telescopic tube is in communication with the outside through the sealing telescopic tube. Moreover, the balance telescopic tube and the sealing telescopic tube are oppositely arranged on both sides of the transducer assembly. When one of the balance telescopic tube and the sealing telescopic tube is stretched, the other is compressed.

[0059] Regarding the working principle of the physiotherapy head, the ultrasonic head is taken as an example for a brief description. When the ultrasonic care instrument is used for care, the transducer inside the knife head forms focused ultrasound, so that the lower layer of the skin forms a care point, and the effects of anti-aging, lifting or wrinkle removal are achieved. For example, the ultrasonic care instrument exceeds the depth limitation of traditional non-surgical equipment, and penetrates into the SMAS (Superficial Musculo-Aponeurotic System) fascia layer. The ultrasonic energy is concentrated at the care point, high temperature is generated, the target tissue is shrunk under high temperature, and collagen is stimulated to be regenerated, so that the effects of anti-aging, wrinkle removal, tightening and lifting, and shrinkage contour are achieved. The energy wave generated by the transducer can directly act on the fascia layer to make the fascia layer shrink. In some schemes, in order to adjust the acoustic impedance so that the ultrasonic transducer can work efficiently, the ultrasonic transducer is arranged to work in a liquid environment.

[0060] The specific structure of the skin treatment device will be mainly described below.

[0061] With reference to Figures 1 to 6 In the embodiment of the present application, the skin treatment device comprises a hand-held piece 10 and a cutter head 20. The hand-held piece 10 and the cutter head 20 can be fixedly connected as an integral structure or can be detachably connected as a split structure. In the present embodiment, the hand-held piece 10 and the cutter head 20 are detachably connected. The hand-held piece 10 and the cutter head 20 can be connected in many ways, such as through a buckle connection, a fastener connection, a threaded connection, a magnetic adsorption connection, a glue connection, a hot melt welding, etc. No special limitation is made herein.

[0062] In some embodiments, in order to expand the action area and reduce the frequency of moving the skin treatment device by the user, the transducer in the cutter head 20 is arranged to be movable. The driving transducer to move can be in many ways, such as arranging a driving structure 200 (which can be manually driven or automatically driven) on the cutter head 20, or arranging a driving structure 200 in the hand-held piece 10 to drive the transducer to move through a transmission member. Of course, in some embodiments, the driving structure 200 can be arranged in the hand-held piece 10 and the cutter head 20 at the same time. The two driving structures 200 can independently drive the transducer to move or can cooperate to drive the transducer to move.

[0063] In some embodiments, in order to improve the working accuracy of the ultrasonic transducer 750, a cutter head 20 for a skin treatment device is provided, comprising:

[0064] A housing 600 having a mounting cavity and an acoustic wave outlet 611;

[0065] A transducer assembly 700 comprising an assembly bracket 717, a rolling member 500, a mounting bracket 716 and an ultrasonic transducer 750. The ultrasonic transducer 750 is mounted on the mounting bracket 716, and the mounting bracket 716 is movably connected with the assembly bracket 717 in a first direction. Corresponding to the connection between the mounting bracket 716 and the assembly bracket 717, the mounting bracket 716 has a first rolling groove 721, and the assembly bracket 717 has a second rolling groove 713. At least part of the rolling member 500 is located in the first rolling groove 721 and at least part of the rolling member 500 is located in the second rolling groove 713, so that rolling friction occurs when the assembly bracket 717 and the mounting bracket 716 move relative to each other;

[0066] A driving mechanism 900 mounted on the assembly bracket 717, the driving mechanism 900 being drivingly connected with the mounting bracket 716 for driving the mounting bracket 716 and the ultrasonic transducer 750 to move relative to the assembly bracket 717. The ultrasonic transducer 750 is used to generate ultrasonic energy that is emitted into the skin from the acoustic wave outlet 611.

[0067] Specifically, in this embodiment, the overall shape of the shell 600 can be various, such as a square (cuboid, rectangular cuboid), a truncated cone, etc., which are not particularly limited here. The shell 600 has a mounting cavity 610, a communication hole 612, and a sound wave outlet 611, and in some embodiments, can also have a vent hole 613. The sound wave outlet 611 is formed on one side of the shell 600, and is used for transmitting the sound waves emitted by the ultrasonic transducer 750 from the mounting cavity 610. The sound wave outlet 611 corresponds to the sound outlet area 21, and the packaging film structure 950 is sealingly connected to the sound wave outlet 611 to prevent liquid in the mounting cavity 610 from leaking out. The communication hole 612 is used for inserting the transmission shaft of the handheld piece into the shell, and the vent hole 613 is used for the communication between the balance expansion pipe and the outside of the shell.

[0068] The combination form of the shell 600 can be various, such as including a front shell and a rear shell, a left shell and a right shell, an upper shell 650 and a lower shell 660, etc., which are not particularly limited here. Hereinafter, the upper shell 650 and the lower shell 660 are mainly taken as examples for description, wherein the sound wave outlet 611 is located on the upper shell 650.

[0069] In order to prevent liquid from leaking from the shell 600, the upper shell 650 and the lower shell 660 are sealingly connected. The sealing connection between the upper shell 650 and the lower shell 660 can be various, such as through sealing glue, hot melt connection, welding, etc.

[0070] In an embodiment, a sealing recess is provided on one of the upper shell 650 and the lower shell 660, and a sealing protrusion is provided on the other one, and the sealing protrusion is inserted into the sealing recess. Optionally, a sealing glue layer can also be provided in the sealing recess to improve the sealing effect of the sealing connection. The sealing connection position of the upper shell 650 and the lower shell 660 is in or approximately in the same vertical plane, so as to avoid the phenomenon that the sealing effect is poor due to misalignment of the connection position.

[0071] The communication hole 612 and the vent hole 613 can be provided on the upper shell 650 or the lower shell 660, and in some embodiments, a part of them can be located on the upper shell 650 and a part of them can be located on the lower shell 660, which are not particularly limited here. Here, the upper shell 650 is taken as an example. During assembly, the components in the shell 600 can be assembled first, and then the upper shell 650 and the lower shell 660 are sealingly connected.

[0072] The assembly support 717 can be a separate support or a combined support, which is not particularly limited here. For example, the assembly support 717 includes a detachable first support 711 and a second support 712. In some embodiments, the assembly support 717 is provided with a clamping groove 720, and the second magnetic member 820 and the fixing portion 819 of the sealing telescopic tube are clamped in the clamping groove 720, i.e., the fixing portion 819 is at least partially clamped in the clamping groove 720, and the edge portion of the second magnetic member 820 is clamped in the clamping groove 720. In this way, the rigidity of the second magnetic member 820 can be used to achieve stable assembly with the clamping groove 720. When the assembly support 717 includes the connected first support 711 and the second support 712, the mounting support 716 is mounted on the second support 712, for example. At this time, the clamping groove 720 is formed in the first support 711, or the clamping groove 720 is formed in the second support 712, or the first support 711 and the second support 712 enclose the clamping groove 720.

[0073] The driving mechanism 900 can be used to drive the mounting support to move along the width direction of the cutter head 20. For details, see Figure 3 The length direction, the width direction and the height direction of the housing 600 are perpendicular to each other, the height direction is consistent with the opening direction of the sound wave outlet 611, and the plane determined by the length direction and the width direction is parallel to the sound wave outlet 611. It is worth noting that the skin treatment device with the cutter head 20 can only have the driving mechanism 900 in the housing 600, or can simultaneously have a driving assembly 210 for driving the transducer assembly 700 to move along the length direction of the skin treatment device. The driving assembly 210 can be located in the housing 600 or in the shell 100 of the handpiece 10. In the following embodiments, the driving assembly 210 located in the handpiece 10 will be taken as an example for description.

[0074] The first rolling groove 721 can be arranged at various positions on the mounting bracket 716, such as the bottom, side, or even the interior of the mounting bracket 716, as long as the side of the slot of the first rolling groove 721 has space to cooperate with the second rolling groove 713. Similarly, the second rolling groove 713 can be arranged at various positions on the assembly bracket 717, such as the fixed portion, side, or even the interior of the assembly bracket 717, as long as it can cooperate with the first rolling groove 721 to limit the rolling member 500. For example, when the first rolling groove 721 is located at the bottom of the mounting bracket 716, the second rolling groove 713 can be located at the top of the assembly bracket 717; when the first rolling groove 721 is located at the side of the mounting bracket 716, the second rolling groove 713 can be located at the side or interior of the assembly bracket 717. The first rolling groove 721 extends along the length direction of the mounting bracket 716, and the second rolling groove 713 extends along the length direction of the assembly bracket 717. The cross-sectional shape of the first rolling groove 721 and the cross-sectional shape of the second rolling groove 713 can be different or the same, in order to adapt to the overall shape of the rolling member 500, so that the rolling member 500 can roll as a reference. For example, when the rolling member 500 is arranged in a spherical shape, the cross-section of the first rolling groove 721 and the second rolling groove 713 is arranged in an arc line, or in other words, the first rolling groove 721 and the second rolling groove 713 are arc grooves, so that the spherical rolling member 500 can smoothly roll in the first rolling groove 721 and the second rolling groove 713.

[0075] The overall shape of the rolling member 500 can be spherical, cylindrical, or the like, and can be a shape structure that can roll when the mounting bracket 716 and the assembly bracket 717 move relative to each other, which is not specially limited here, and a ball is taken as an example. The rolling member 500 is located in the first rolling groove 721 and the second rolling groove 713 at the same time, and when the mounting bracket 716 and the assembly bracket 717 move relative to each other, the part of the rolling member 500 located in the first rolling groove 721 can roll relative to the first rolling groove 721, and the part located in the second rolling groove 713 can roll relative to the second rolling groove 713. In this way, the relative movement between the mounting bracket 716 and the assembly bracket 717 can be realized through the rolling of the rolling member 500 in the first rolling groove 721 and the second rolling groove 713.

[0076] In this embodiment, the transducer assembly 700 is arranged to include the mounting bracket 716, the mounting bracket 716 and the ultrasonic transducer 750 mounted on the mounting bracket 716, and corresponding to the connection between the mounting bracket 716 and the mounting bracket 717, the mounting bracket 716 has a first rolling groove 721, and the mounting bracket 717 has a second rolling groove 713; at the same time, the rolling member 500 is arranged to be located in the first rolling groove 721 and the second rolling groove 713 at the same time, so that the mounting bracket 716 and the mounting bracket 717 are not in direct contact, but are connected by the rolling member 500; in this way, when the driving mechanism 900 drives the mounting bracket 716 (with the ultrasonic transducer 750 mounted thereon) to move relative to the mounting bracket 717, the rolling member 500 rolls in the first rolling groove 721 and the second rolling groove 713, avoiding sliding friction between the mounting bracket 717 and the mounting bracket 716, so that the ultrasonic transducer 750 does not produce large vibration or jitter due to sliding friction during operation, so that the focal point position of the ultrasonic transducer 750 after focusing is stable and accurate, so that the ultrasonic wave can be accurately sent to the specified skin depth, so that the position of the ultrasonic treatment is accurate, and thus the treatment effect of the ultrasonic treatment is ensured; at the same time, through the arrangement of the rolling member 500, the friction generated by the relative movement of the mounting bracket 716 and the mounting bracket 717 is rolling friction, which greatly reduces the loss caused by movement, and is beneficial to improve the service life of the skin treatment device.

[0077] As for the first direction, its extension direction can be many, in addition to the above embodiment consistent with the width direction of the shell 600, it can also be consistent with the length direction of the shell 600 (in the embodiment not considering the second direction). Of course, it can be further understood that in some embodiments, the first direction only needs to meet the direction consistent with the extension direction of the sound wave outlet 611, that is, parallel to the plane where the sound wave outlet 611 is located. In the case of considering the second direction, the shell 600 includes a guide column 760 mounted on the cavity wall of the mounting cavity 610 along the second direction, and the mounting bracket 717 is slidably mounted on the guide column 760, the second direction is parallel to the direction of the sound wave outlet 611, and the first direction is arranged at an angle with the second direction. The guide column 760 is arranged along the length direction of the shell 600, and the number of guide columns 760 can be one or two, and the two guide columns 760 are arranged at intervals and are respectively connected with the opposite sides of the mounting bracket 717. The relationship between the second direction and the first direction can be referred to in the above embodiment, and the first direction and the second direction form a coordinate system in the plane, for example, a rectangular coordinate system, so that the ultrasonic transducer 750 can move to any position in the plane. In this way, the range of movement of the ultrasonic transducer 750 is greatly improved, which provides a solid foundation for implementing more and more complex ultrasonic physiotherapy programs.

[0078] In some embodiments, in order to improve the connection stability of the mounting bracket 716 and the assembly bracket 717, one of the assembly bracket 717 and the mounting bracket 716 is provided with a sliding groove 715, and the other is provided with a sliding block 720, the sliding block 720 is in sliding fit with the sliding groove 715; the side wall of the sliding block 720 is provided with a first rolling groove 721, and the groove wall of the sliding groove 715 is provided with a second rolling groove 713; or, the side wall of the sliding block 720 is provided with a second rolling groove 713, and the groove wall of the sliding groove 715 is provided with a first rolling groove 721. The opposite sides of the sliding block 720 are both provided with the first rolling groove 721, the opposite groove walls of the sliding groove 715 are both provided with the second rolling groove 713, the number of the rolling members 500 is multiple, and the multiple rolling members 500 are distributed on the two sides of the sliding block 720; the sliding block 720 is suspended in the sliding groove 715 through the rolling members 500.

[0079] Specifically, in the embodiment, the sliding groove 715 can be arranged on the mounting bracket 716, and the sliding block 720 can be arranged on the assembly bracket 717; or the sliding block 720 can be arranged on the mounting bracket 716, and the sliding groove 715 can be arranged on the assembly bracket 717, so that the mounting bracket 716 and the assembly bracket 717 are connected through the sliding fit of the sliding block 720 and the sliding groove 715. In this way, the stability of the movable connection of the mounting bracket 716 and the assembly bracket 717 is improved. The position of the first rolling groove 721 can be on the side wall of the sliding groove 715 (at this time, the second rolling groove 713 is on the outer side wall of the sliding block 720) in some embodiments, or on the side wall of the sliding block 720 (at this time, the second rolling groove 713 is on the inner side wall of the sliding groove 715) in other embodiments. In some embodiments, in order to improve the fit stability of the sliding groove 715 and the sliding block 720, the second rolling groove 713 is arranged on the opposite sides of the sliding block 720, and the first rolling groove 721 is arranged on the opposite groove walls of the sliding groove 715. In this way, when the sliding block 720 is arranged in the sliding groove 715, two pairs of corresponding first rolling grooves 721 and second rolling grooves 713 are formed, and the rolling members 500 are arranged between the two pairs of first rolling grooves 721 and second rolling grooves 713. In this way, the opposite sides of the sliding block 720 are in rolling friction with the inner side walls of the sliding groove 715, the friction is greatly reduced, and the fit stability of the sliding block 720 and the sliding groove 715 is improved. The number of the rolling members 500 between the first rolling groove 721 and the second rolling groove 713 can be one or multiple, which can be set according to the actual length of the first rolling groove 721 and the second rolling groove 713, and two are taken as an example in the embodiment.

[0080] It is worth noting that in some embodiments, the mounting bracket 716 includes a mounting seat 718 and a sliding block 720 connected with the mounting seat 718, the ultrasonic transducer 750 is mounted on the mounting seat 718, and the first rolling groove 721 is formed on the sliding block 720. In this way, the installation of the ultrasonic transducer can be independent of the installation and cooperation of the sliding block, which is beneficial to improve work efficiency. Of course, in some embodiments, the ultrasonic transducer can be mounted to the mounting seat and then integrally mounted to the mounting bracket, at this time, the machining of the mounting seat and the machining of the sliding block can be carried out independently, and at the same time, the relatively complex structure is arranged separately, which is beneficial to reduce the machining difficulty and improve the machining efficiency.

[0081] In some embodiments, in order to improve the reliability of the installation of the rolling member 500, the tool bit 20 further includes a rolling bracket 300, the rolling bracket 300 includes a mounting portion 310 and a top abutting portion 320 connected with the mounting portion 310; the mounting portion 310 is located between the first rolling groove 721 and the second rolling groove 713, the mounting portion 310 is provided with a mounting hole 311, and at least part of the rolling member 500 is located in the mounting hole 311; the top abutting portion 320 is located at the end of the mounting bracket 716, so as to abut against the top abutting portion 320 when the mounting bracket 716 moves, thereby driving the rolling bracket 300 to move. The following embodiments are described by taking the sliding block 720 arranged on the mounting bracket 716 as an example, and it is worth noting that in the case where there is no sliding groove 715 and sliding block 720, the rolling bracket 300 can move with the movement of the mounting bracket 716, thereby ensuring the relative position relationship between the mounting hole 311 and the rolling member 500 and the mounting bracket 716, and thereby ensuring that the rolling member 500 can stably cooperate with the first rolling groove 721 and the second rolling groove 713.

[0082] Specifically, the rolling bracket 300 can have various forms, and in the present embodiment, the rolling bracket 300 includes the mounting portion 310 and the top abutting portion 320 as an example. The connection between the mounting portion 310 and the top abutting portion 320 can be direct connection or indirect connection, for example, the connection can be realized by connecting an intermediate part of the mounting portion 310 and the top abutting portion 320 at the same time.

[0083] The form of the mounting portion 310 can be many, can be sheet-shaped, can be block-shaped, etc., to can open the mounting hole 311, and can be exposed to the basis of the rolling member 500. The shape of the mounting hole 311 can be many, such as a circular hole, an oval hole, a square hole, etc., to the rolling member 500 can rotate in the mounting hole 311 as the basis. That is, the hole diameter of the mounting hole 311 is greater than or equal to the maximum radial dimension of the rolling member 500. The number of mounting portions 310 is the same as the number of first and second rolling grooves 721 and 713. When the number of first and second rolling grooves 721 and 713 is 2, the number of mounting portions 310 is also 2, and is arranged corresponding to the first and second rolling grooves 721 and 713.

[0084] The abutting portion 320 can be many, can be sheet-shaped, can be block-shaped, etc., which is not specially limited here. The abutting portion 320 is arranged adjacent to the mounting portion 310, and the number of the abutting portion 320 can be one, two, etc., and two in the embodiment. The two abutting portions 320 are respectively located at the two ends of the sliding block 720. When the sliding block 720 moves relative to the sliding groove 715, the end of the sliding block 720 abuts against the abutting portion 320, and the rolling bracket 300 is driven to move by the abutting portion 320. By arranging the two abutting portions 320 at the two ends of the sliding block 720, the sliding block 720 can drive the rolling bracket 300 to move regardless of the direction of the sliding block 720 along the sliding groove 715.

[0085] In this way, after the rolling bracket 300 is installed, the rolling member 500 is installed in the mounting hole 311, and at least part of the rolling member 500 is located in the first and second rolling grooves 721 and 713; by arranging the abutting portion 320, the rolling bracket 300 moves with the movement of the sliding block 720, so that the relative position of the rolling bracket 300 and the sliding block 720 does not change greatly (in some embodiments, the extension can set the rolling bracket 300 and the sliding block 720 to be relatively stationary.), so that the mounting hole 311 and the rolling member 500 can move with the movement of the sliding block 720, thereby ensuring the stability of the cooperation between the rolling member 500 and the first and second rolling grooves 721 and 713.

[0086] In some embodiments, in order to improve the stability of the movable connection between the assembling bracket 717 and the mounting bracket 716, one of the assembling bracket 717 and the mounting bracket 716 is provided with a sliding groove 715, and the other is provided with a sliding block 720 which is in sliding fit with the sliding groove 715; the sliding block 720 is provided with a first rolling groove 721 on each of the two side walls in the length direction, and the sliding groove 715 is provided with a second rolling groove 713 on each of the two groove walls; the mounting portion 310 is in number of two and is arranged corresponding to the two first rolling grooves 721 and the two second rolling grooves 713; the abutting portion 320 is in number of two and is arranged corresponding to the two end walls in the length direction of the sliding block 720. The two abutting portions 320 are arranged oppositely, and the two mounting portions 310 are arranged oppositely. In this way, the mounting hole 311 and the rolling member 500 can move along with the movement of the sliding block 720, thereby ensuring the stability of the cooperation between the rolling member 500 and the first rolling groove 721 and the second rolling groove 713.

[0087] In some embodiments, in order to improve the stability of the movable connection between the assembling bracket 717 and the mounting bracket 716, one of the assembling bracket 717 and the mounting bracket 716 is provided with a sliding groove 715, and the other is provided with a sliding block 720 which is in sliding fit with the sliding groove 715; the sliding block 720 is provided with a first rolling groove 721 on each of the two side walls in the length direction, and the sliding groove 715 is provided with a second rolling groove 713 on each of the two groove walls; the mounting portion 310 is in number of two and is arranged corresponding to the two first rolling grooves 721 and the two second rolling grooves 713; the abutting portion 320 is in number of two and is arranged corresponding to the two end walls in the length direction of the sliding block 720. The two abutting portions 320 are arranged oppositely, and the two mounting portions 310 are arranged oppositely. In this way, the mounting hole 311 and the rolling member 500 can move along with the movement of the sliding block 720, thereby ensuring the stability of the cooperation between the rolling member 500 and the first rolling groove 721 and the second rolling groove 713.

[0088] In some embodiments, in order to improve the flexibility of the rolling member 500, a first clearance 350 is left between the sliding block 720 and the base plate 330. In this embodiment, by leaving the first clearance 350 between the sliding block 720 and the base plate 330, when the rolling bracket 300 and the sliding block 720 need to move relatively, they will not be subject to resistance due to friction between them. This facilitates the small-amplitude relative movement of the rolling bracket 300 and the sliding block 720. It should be noted that the relative movement of the rolling bracket 300 and the sliding block 720 by a certain amplitude facilitates the more flexible rolling of the rolling member 500 in the mounting hole 311.

[0089] In some embodiments, in order to improve the flexibility of the sliding block 720 moving relative to the sliding groove 715, a second clearance 360 is left between the base plate 330 and the bottom of the sliding groove 715. By providing the second clearance 360, when the mounting bracket 716 moves relative to the assembly bracket 717, there will be no frictional resistance between the bottom of the rolling bracket 300 and the sliding groove 715, thereby facilitating better movement of the sliding block 720 relative to the sliding groove 715.

[0090] In some embodiments, in order to improve the stability of the movable connection between the mounting bracket 716 and the assembly bracket 717, the mounting bracket 716 includes a sliding block 720 and a transmission block 730 connected to the sliding block 720, and the assembly bracket 717 has a sliding groove 715, the sliding block 720 and the sliding groove 715 are in sliding fit; the driving mechanism 900 includes a driving motor 910 and a transmission mechanism 920, the driving motor 910 and the transmission mechanism 920 are drivingly connected, and the transmission mechanism 920 and the transmission block 730 are drivingly connected. The transmission block 730 extends from one side of the sliding block 720 to one side of the assembly bracket 717 along the slot of the sliding groove 715; the transmission mechanism 920 includes a transmission gear 921 and a transmission rack 922, the transmission rack 922 is arranged on the side of the transmission block 730 away from the sliding block 720, the transmission gear 921 is fixedly connected with the driving shaft of the driving motor 910 and is in engagement with the transmission rack 922.

[0091] Specifically, the form of the driving mechanism 900 can be various, in some embodiments the driving mechanism 900 can only include a driving motor 910, the driving motor 910 directly drives the mounting bracket 716 to move; in other embodiments, the driving mechanism 900 includes a driving motor 910 and a transmission mechanism 920, the driving motor 910 and the transmission mechanism 920 are in transmission connection, the transmission mechanism 920 is connected with the transmission block 730, so that the driving motor 910 is connected with the mounting bracket 716 through the transmission mechanism 920. The mounting bracket 716 moves along the sliding groove 715 of the assembly bracket 717 under the action of the driving mechanism 900. Among them, through the cooperation of the sliding block 720 and the sliding groove 715, the sliding stability between the mounting bracket 716 and the assembly bracket 717 is higher. The connection mode of the transmission block 730 and the sliding block 720 is various, in some embodiments, the two can be integrally formed, in some embodiments, they can also be detachably connected through screws, buckles, adhesives, magnetic adsorption and the like. In the embodiment, the transmission block 730 is formed as an example of extending outward from the side wall of the sliding block 720. The transmission rack 922 and the transmission block 730 can be integrally formed, or can be fixedly connected through screws, buckles, adhesives, magnetic adsorption and the like. In the embodiment, the transmission rack 922 and the transmission block 730 are integrally formed, in some embodiments, it can also be understood that the transmission teeth of the transmission rack 922 are formed on the side of the transmission block 730 away from the sliding block 720. By setting the transmission block 730 to extend to one side of the assembly bracket 717, the transmission rack 922 arranged on the transmission block 730 can be conveniently engaged with the transmission gear 921. In the working process of the skin treatment device, the driving motor 910 drives the transmission gear 921 to rotate through its driving shaft, and the transmission gear 921 drives the sliding block 720 to move in the sliding groove 715 through the transmission rack 922 engaged therewith, so that the mounting bracket 716 and the ultrasonic transducer 750 move on the assembly bracket 717. In this way, the stability of the mounting bracket 716 relative to the assembly bracket 717 is greatly improved, and the accuracy of the movement of the ultrasonic transducer 750 is greatly improved.

[0092] The utility model also proposes a skin treatment device, the skin treatment device includes handheld piece 10 and tool bit 20, the specific structure of tool bit 20 refers to the above embodiment, because the skin treatment device adopts all the technical schemes of the above all embodiments, therefore at least has all the beneficial effects brought by the technical scheme of the above embodiment, here will not be repeated. Among them, the tool bit 20 is installed in one end of handheld piece 10.

[0093] The above merely describes preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the inventive concept of the present application, as described in the present application specification and drawings, is included in the patent protection scope of the present application.

Claims

1. A head for a skin treatment device, characterized in that, The application relates to a handheld ultrasonic device, which comprises: a shell having a mounting cavity and an acoustic wave outlet; a transducer assembly mounted in the mounting cavity, the transducer assembly comprising an assembly support, a rolling piece, a mounting support and an ultrasonic transducer; the ultrasonic transducer is mounted on the mounting support, and the mounting support is movably connected with the assembly support in a first direction; wherein, corresponding to the connection between the mounting support and the assembly support, the mounting support has a first rolling groove, and the assembly support has a second rolling groove; at least part of the rolling piece is located in the first rolling groove and at least part of the rolling piece is located in the second rolling groove, so that rolling friction occurs when the assembly support and the mounting support move relatively; a driving mechanism mounted on the assembly support, the driving mechanism being drivingly connected with the mounting support to drive the mounting support and the ultrasonic transducer to move relative to the assembly support; the ultrasonic transducer is used to generate ultrasonic energy which is emitted into the skin from the acoustic wave outlet.

2. The tool bit of claim 1 wherein, One of the assembly support and the mounting support has a sliding groove, and the other has a sliding block which is in sliding fit with the sliding groove; the side wall of the sliding block has the first rolling groove, and the groove wall of the sliding groove has the second rolling groove; or, the side wall of the sliding block has the second rolling groove, and the groove wall of the sliding groove has the first rolling groove.

3. The tool bit of claim 2 wherein, The first rolling groove is arranged on the opposite two sides of the sliding block, the second rolling groove is arranged on the opposite two groove walls of the sliding groove, the number of the rolling pieces is multiple, and the multiple rolling pieces are distributed on the two sides of the sliding block; the sliding block is suspended in the sliding groove through the rolling pieces.

4. The tool bit of claim 2 wherein, The mounting support comprises a mounting seat and the sliding block connected with the mounting seat, the ultrasonic transducer is mounted on the mounting seat, and the first rolling groove is formed in the sliding block.

5. The tool bit of claim 1 wherein, The tool bit further comprises a rolling support, the rolling support comprising a mounting portion and an abutting portion connected with the mounting portion; the mounting portion is located between the first rolling groove and the second rolling groove, the mounting portion is provided with a mounting hole, and at least part of the rolling piece is located in the mounting hole; the abutting portion is located at the end of the mounting support, so that the abutting portion is in abutment when the mounting support moves, thereby driving the rolling support to move.

6. The tool bit of claim 5 wherein, One of the assembly support and the mounting support has a sliding groove, and the other has a sliding block which is in sliding fit with the sliding groove; the first rolling groove is arranged on the two side walls of the sliding block in the length direction, and the second rolling groove is arranged on the two groove walls of the sliding groove; the number of the mounting portions is two, and the two mounting portions are arranged corresponding to the two first rolling grooves and the two second rolling grooves respectively; the number of the abutting portions is two, and the two abutting portions are arranged corresponding to the two end walls of the sliding block respectively.

7. The tool bit of claim 6 wherein, The rolling support further comprises a base plate, and the two mounting portions and the two abutting portions are connected with the base plate; the sliding block with the first rolling groove is accommodated in the space surrounded by the base plate, the two mounting portions and the two abutting portions.

8. The tool bit of claim 7 wherein, a first movable gap is left between the sliding block and the base plate; and / or, A second movable gap is left between the substrate and the bottom of the sliding slot; and / or, The diameter of the mounting hole is greater than or equal to the maximum radial dimension of the rolling member.

9. The tool bit of claim 1 wherein, The mounting bracket comprises a sliding block and a transmission block connected to the sliding block, and the assembly bracket has a sliding slot, the sliding block being in sliding fit with the sliding slot; The driving mechanism comprises a driving motor and a transmission mechanism, the driving motor being in driving connection with the transmission mechanism, and the transmission mechanism being in transmission connection with the transmission block.

10. The tool bit of claim 9 wherein, The transmission block extends from one side of the sliding block to one side of the assembly bracket along the slot of the sliding slot; The transmission mechanism comprises a transmission gear and a transmission rack, the transmission rack being arranged on the side of the transmission block away from the sliding block, the transmission gear being fixedly connected with the driving shaft of the driving motor and being in meshing engagement with the transmission rack.

11. The tool bit according to any one of claims 1 to 10, wherein, The rolling member is a ball; and / or, The first rolling groove is an arc-shaped groove; and / or, the second rolling groove is an arc-shaped groove; and / or, The assembly bracket comprises a first bracket and a second bracket in detachable connection, the driving mechanism being mounted on the first bracket, and the second rolling groove being formed in the second bracket; and / or, The first direction is a direction parallel to the sound wave outlet; and / or, The housing comprises a guide post mounted on the cavity wall of the mounting cavity in a second direction, the assembly bracket being slidably mounted on the guide post, the second direction being parallel to the sound wave outlet, and the first direction being arranged at an angle with the second direction.

12. A skin treatment device characterized by, The tool bit according to any one of claims 1 to 11 and a hand-held member, the tool bit being arranged at one end of the hand-held member.

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