A head assembly of a radio frequency beauty instrument and a radio frequency beauty instrument

Abstract

The application relates to the field of cosmetic instruments, in particular to a head assembly of a radio frequency cosmetic instrument and the radio frequency cosmetic instrument. The head assembly comprises an upper shell and a lower circuit board. The upper shell comprises an electrically insulating part and an electrode sheet. The electrically insulating part is provided with a mounting hole, and the electrode sheet is embedded in the mounting hole and is welded with the electrically insulating part through an interface formed by integral injection molding. A number of conductive columns corresponding to the electrode sheet are welded on the lower circuit board. The conductive columns are compressible structures. When the lower circuit board is installed in the interior of the upper shell, the conductive columns are in contact with the electrode sheet from the interior of the upper shell and apply elastic force to the electrode sheet. The position of the electrode sheet does not need to be frequently calibrated during production and installation, and there is no hidden danger of machine water entering and stains being difficult to clean. The electrode sheet and the circuit board always maintain close contact, and the virtual connection caused by vibration, aging or installation failure is avoided.

Description

Technical Field

[0001] This application relates to the field of beauty devices, and more particularly to a head assembly and a radio frequency beauty device. Background Technology

[0002] Radio frequency (RF) beauty devices release radio frequency energy into the skin through electrode pads, using the thermal effect to promote collagen regeneration. Currently, RF beauty devices typically use a modular assembly method for their electrode pads, such as screw fixing or snap-fit ​​nesting. This requires precise slotting of the casing during manufacturing, and the sequential installation of multiple electrode pads during assembly, with strict control over their placement. The installation process is overly cumbersome and demands a high level of skill from the installer. Furthermore, since RF beauty devices frequently come into contact with skin oils, skincare products, or cleansing liquids, the waterproof design of the head assembly is crucial; the waterproof effect of modular electrode pads is less than ideal. Additionally, dirt can easily accumulate in the crevices of modular electrode pads, and this difficult-to-clean dirt can severely affect the effectiveness of the RF beauty device. Utility Model Content

[0003] To solve the above technical problems, in the first aspect, this utility model provides a head assembly for a radio frequency beauty device, including an upper shell and a lower circuit board. The upper shell includes an electrically insulating part and an electrode plate. The electrically insulating part is provided with a mounting hole, and the electrode plate is embedded in the mounting hole and is integrally injection molded with the electrically insulating part to form an interface fusion.

[0004] The lower circuit board has a number of conductive posts corresponding to the electrode plates soldered on it. The conductive posts are compressible structures. When the lower circuit board is installed inside the upper housing, the conductive posts come into contact with the electrode plates from inside the upper housing and apply elastic force to the electrode plates.

[0005] Specifically, a connecting post is provided on the inner side of the upper housing, and a connecting hole is provided on the lower circuit board to cooperate with the connecting post. The diameter of the connecting hole is smaller than the outer diameter of the connecting post and larger than the inner diameter of the connecting post. The connecting hole and the connecting post cooperate with the connecting piece to install the lower circuit board inside the upper housing.

[0006] Specifically, the outer edge of the upper shell is provided with an outward-facing groove, and a waterproof ring is fixed in the groove.

[0007] Specifically, a mounting plate is provided between the lower circuit board and the upper housing. The upper circuit board is detachably mounted on the mounting plate. The mounting plate is provided with mounting plate clearance holes of the same size and number as the conductive pillars. The upper circuit board is provided with upper circuit board clearance holes of the same size and number as the conductive pillars. The conductive pillars pass through the mounting plate clearance holes and the upper circuit board clearance holes.

[0008] Specifically, LED beads are soldered onto the upper circuit board, and the upper casing is made of a light-transmitting material.

[0009] Specifically, the inner wall of the upper housing is provided with a downwardly extending fixing post, which, together with the lower circuit board, fixes the mounting plate in the vertical direction.

[0010] Specifically, the mounting plate is provided with limiting grooves around its perimeter that cooperate with the connecting posts, and the connecting posts cooperate to fix the mounting plate in the horizontal direction.

[0011] Specifically, the upper shell is generally shaped like a frustum, with smooth transitions between the frustum sidewalls and the top surface. Electrode plates are distributed on the top surface of the upper shell, and the electrically insulating portion surrounds the electrode plates.

[0012] Specifically, the inner wall of the upper shell has fixing grooves, and magnets are fixed in the fixing grooves.

[0013] Secondly, this utility model provides a radio frequency beauty device with the above-mentioned head components. The radio frequency beauty device also includes a main body and a head shell, with the head components embedded in the main body.

[0014] The waterproof ring of the head assembly is in close contact with the inner wall of the body;

[0015] The inner wall of the head shell is fixed with a magnet that engages with the magnet of the head assembly;

[0016] The main body is electrically connected to the upper and lower circuit boards.

[0017] This application has the following technical effects:

[0018] 1. It abandons the traditional assembly structure of split electrodes, eliminating the need for frequent calibration of electrode positions during production and installation, and eliminating the risk of water ingress into the machine or difficulty in cleaning stains;

[0019] 2. The elastic pressure of the compressible conductive column ensures that the electrode sheet and the circuit board always maintain close contact, avoiding poor connection caused by vibration, aging or improper installation. Attached Figure Description

[0020] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily understood by reading the following detailed description with reference to the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, and the same or corresponding reference numerals denote the same or corresponding parts.

[0021] Figure 1 This is a schematic diagram of the injection molding process in the embodiments of this application;

[0022] Figure 2 This is a structural diagram of the upper shell in an embodiment of this application;

[0023] Figure 3 This is a structural diagram of the upper housing and lower circuit board in an embodiment of this application;

[0024] Figure 4 This is a cross-sectional view of the upper housing in an embodiment of this application;

[0025] Figure 5 This is a structural diagram of the head shell, upper shell, upper circuit board, mounting plate, lower circuit board, and main body shell in the embodiment of this application, arranged from top to bottom.

[0026] The components include: 1. Upper shell; 2. Lower circuit board; 3. Mounting plate; 4. Upper circuit board; 5. Main body shell; 6. Head shell; 101. Electrical insulation part; 102. Electrode plate; 103. Connecting post; 104. Groove; 105. Waterproof ring; 106. Mounting block; 201. Conductive post; 202. Connecting hole; 203. Stud; 401. Lamp bead; 501. Mounting slot. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0028] Example 1

[0029] This embodiment uses, as follows Figure 1 The injection molding process shown is used to manufacture the upper shell:

[0030] S1. Pre-place copper electrode sheets in the injection mold. The surface of the electrode sheets is nickel-plated to prevent oxidation. Mounting holes for the electrode sheets are reserved in the mold.

[0031] S2. Under the conditions of melting temperature and injection pressure, the thermoplastic plastic is melted and injected into the mold;

[0032] S3. Perform micro-etching on the copper electrode sheet to enhance the bonding force between the electrode sheet and the thermoplastic.

[0033] S4. Cooling and molding to form a seamless interface fusion structure.

[0034] The final upper shell is as follows Figure 2As shown, the device includes an electrically insulating portion 101 and an electrode plate 102. The electrically insulating portion 101 has mounting holes, which can be circular, arc-shaped, or triangular, corresponding to the shape of the electrode plate 102. The electrode plate 102 is embedded in the mounting holes and is integrally injection molded with the electrically insulating portion 101 to form an interface fusion. The various shapes of the electrode plate 102 help to distribute the radio frequency conduction received by the skin, avoiding excessive concentration of radio frequency conduction that could lead to excessively high local skin temperature and damage. The one-piece molded structure design eliminates the need for precise calibration of the relative positions of the electrode plate 102 and the electrically insulating portion 101 during production. Furthermore, the upper housing can be installed as a single module during installation, eliminating the installation steps required for separate electrode plates. The seamless one-piece structure eliminates the risk of water ingress into the upper housing and prevents dirt from getting stuck in the gaps, facilitating cleaning.

[0035] After the upper housing is fabricated, this embodiment modularly assembles the upper housing and the lower circuit board, as follows: Figure 3 As shown, in this embodiment, a number of conductive posts 201 corresponding to the number of electrode plates 102 are soldered on the lower circuit board. The conductive posts 201 are composed of a sleeve and a push pin. The push pin can move within the sleeve with a certain stroke, so that the conductive posts 201 can be compressed and provide elasticity. When the lower circuit board 2 is installed inside the upper housing 1, the conductive posts 201 contact the electrode plates 102 from inside the upper housing 1 and apply elasticity to the electrode plates 102, so as to avoid the electrode plates 102 and the conductive posts 201 from being loosely connected due to improper installation, deformation caused by temperature rise during operation, structural aging, etc. in the radio frequency beauty device.

[0036] Specifically, in this embodiment, as Figure 3 As shown, a connecting post 103 is provided on the inner wall of the upper housing 1. The connecting post has an inner diameter of 2mm and an outer diameter of 3mm, and is internally threaded. Corresponding to the connecting post 103, the lower circuit board 2 is provided with a connecting hole 202. The diameter of the connecting hole 202 is the same as the inner diameter of the connecting post, both being 2mm, to prevent the lower circuit board from moving horizontally after installation. In this embodiment, the lower circuit board 2 and the upper housing 1 are detachably modularly installed using the studs 203.

[0037] To further enhance the waterproof performance of the head assembly in the embodiment, such as Figure 4 As shown, in this embodiment, an outward-facing groove 104 is provided on the edge of the upper housing 1. A waterproof ring 105 is fixed in the groove 104. When the head assembly of this embodiment is embedded in the main body shell of the radio frequency beauty device, the shell cooperates with the groove 104 to tightly clamp the waterproof ring 105. The upper edge of the groove 104 and the shell form a closed structure, which achieves a double waterproof effect and prevents liquid from entering the beauty device from the installation gap between the head and the main body shell.

[0038] Example 2

[0039] This embodiment provides a modularly installed beauty device head assembly and a radio frequency beauty device equipped with the head assembly, such as... Figure 5 As shown, the beauty device head assembly of this embodiment includes an integrally injection-molded upper shell 1, a lower circuit board 2 with welded conductive posts 201, a mounting plate 3 installed between the upper shell 1 and the lower circuit board 2, and an upper circuit board 4 detachably mounted on the mounting plate 3. The beauty device head assembly is embedded in the main body shell 3 and is detachably and securely mounted via a mounting block 106 at the lower edge of the upper shell 1 and a mounting groove 501 inside the main body shell 5. The upper shell 1 includes an electrically insulating part 101 and an electrode plate 102. The electrically insulating part 101 is provided with mounting holes, and the electrode plate 102 is embedded in the mounting holes and welded to the electrically insulating part 101 through integral injection molding. The conductive posts 201 are compressible structures. When the lower circuit board 2 is installed inside the upper shell 1, the conductive posts 201 contact the electrode plate 102 from inside the upper shell 1 and apply elastic force to the electrode plate 102.

[0040] Specifically, a mounting plate 3 is provided between the lower circuit board 2 and the upper housing 1. An upper circuit board 4 is detachably mounted on the mounting plate 3. The mounting plate 3 has mounting plate clearance holes of corresponding size and number to the conductive posts. The upper circuit board also has upper circuit board clearance holes of corresponding size and number to the conductive posts. The conductive posts pass through the mounting plate clearance holes and the upper circuit board clearance holes. During installation, the clearance holes of the upper circuit board 4 and the mounting plate 3 are first aligned, and the upper circuit board 4 is mounted on the mounting plate 3. Then, the mounting plate 3 and the upper circuit board 4 are integrated as a modular unit and passed through the conductive posts 201 of the lower circuit board 2. Finally, the lower circuit board 2 is fixed to the upper housing 1 using studs 203. This simplifies the traditional installation process of the beauty device head assembly, reduces the skill requirements for installers, shortens the time required to assemble the beauty device head assembly, and improves the production efficiency of the radio frequency beauty device.

[0041] Furthermore, in this embodiment, the inner wall of the upper housing 1 is provided with a downwardly extending fixing post, which, together with the lower circuit board 2, fixes the mounting plate 3 in the vertical direction. When the stud 203 is tightened, the length of the fixing post is precisely machined to clamp the mounting plate 3 between the upper housing 1 and the lower circuit board 2, preventing the mounting plate from moving in the vertical direction.

[0042] Meanwhile, the mounting plate 3 is provided with limiting grooves around its perimeter that cooperate with the connecting post 103. The edges of the limiting grooves are closely fitted with the shape of the connecting post 103, and the connecting post 103 cooperates to fix the mounting plate in the horizontal direction.

[0043] The upper circuit board 4 is a modular structure, and its function can be determined according to actual needs. In this embodiment, the upper circuit board 4 is a lamp board with lamp beads 401 welded on. Correspondingly, the upper shell 1 is made of a light-transmitting material. As a preferred option, the upper shell 1 in this embodiment uses COC plastic (cyclic olefin copolymer). COC plastic, while taking into account both light transmittance and electrical insulation, can be integrally injection molded at an injection temperature of 280°C. Furthermore, the material has high strength, good chemical resistance, and is not easily corroded by skin oils, detergents, or other liquids. During the operation of the radio frequency beauty device, the conductive pillar conducts radio frequency while the lamp beads emit light, providing a better user experience and improving the effectiveness of the radio frequency beauty device in low-light environments.

[0044] To further optimize the user experience of the radio frequency beauty device in this embodiment, the upper housing 1 is generally shaped like a frustum, with smooth transitions between the frustum's sidewalls and top surface. Electrode plates 102 are distributed on the top surface of the upper housing 1, and the electrically insulating portion 101 surrounds the electrode plates 102. During use, it can more adapt to the skin, resulting in more uniform conduction of radio frequency. Furthermore, the inner wall of the upper housing 1 in this embodiment has fixing grooves, in which magnets are fixed. The inner wall of the head housing 6 of the radio frequency beauty device is fixed with a magnet that cooperates with the magnet of the head assembly. The main body is electrically connected to the upper circuit board 4 and the lower circuit board 2, supplying power to the upper circuit board 4 and the lower circuit board 2.

[0045] Obviously, the embodiments described above are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0046] It should be understood that when the terms "first," "second," etc., are used in the claims, description, and drawings of this application, they are only used to distinguish different objects and not to describe a specific order. The terms "comprising" and "including" used in the description and claims of this application indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.

Claims

1. A head assembly for a radio frequency beauty device, characterized in that, It includes an upper housing and a lower circuit board. The upper housing includes an electrically insulating part and an electrode plate. The electrically insulating part is provided with a mounting hole. The electrode plate is embedded in the mounting hole and is integrally injection molded with the electrically insulating part to form an interface fusion. The lower circuit board has a number of conductive posts corresponding to the electrode plates soldered on it. The conductive posts are compressible structures. When the lower circuit board is installed inside the upper housing, the conductive posts come into contact with the electrode plates from inside the upper housing and apply elastic force to the electrode plates.

2. The head assembly according to claim 1, characterized in that, The upper housing has a connecting post on its inner side, and the lower circuit board has a connecting hole that mates with the connecting post. The diameter of the connecting hole is smaller than the outer diameter of the connecting post and larger than the inner diameter of the connecting post. The connecting hole and the connecting post mate with a connector to install the lower circuit board inside the upper housing.

3. The head assembly according to claim 1, characterized in that, The outer edge of the upper shell is provided with an outward-facing groove, in which a waterproof ring is fixed.

4. The head assembly according to claim 1, characterized in that, A mounting plate is provided between the lower circuit board and the upper housing. The upper circuit board is detachably mounted on the mounting plate. The mounting plate is provided with mounting plate clearance holes of the same size and number as the conductive pillars. The upper circuit board is provided with upper circuit board clearance holes of the same size and number as the conductive pillars. The conductive pillars pass through the mounting plate clearance holes and the upper circuit board clearance holes.

5. The head assembly according to claim 4, characterized in that, LED beads are soldered onto the upper circuit board, and the upper casing is made of light-transmitting material.

6. The head assembly according to claim 4, characterized in that, The inner wall of the upper housing is provided with downwardly extending fixing posts, which work with the lower circuit board to fix the mounting plate in the vertical direction.

7. The head assembly according to claim 2 or 4, characterized in that, The mounting plate has limiting grooves around its perimeter that mate with the connecting posts, which fix the mounting plate horizontally.

8. The head assembly according to claim 1, characterized in that, The upper shell is generally shaped like a frustum, with smooth transitions between the frustum sidewalls and the top surface. Electrode plates are distributed on the top surface of the upper shell, and the electrically insulating part surrounds the electrode plates.

9. The head assembly according to claim 1, characterized in that, The inner wall of the upper shell has fixing grooves, and magnets are fixed in the fixing grooves.

10. A radio frequency beauty device, characterized in that, Including the head assembly as described in any one of claims 1-9, the radio frequency beauty device further includes a body and a head shell, with the head assembly embedded in the body; The waterproof ring of the head assembly is in close contact with the inner wall of the body; The inner wall of the head shell is fixed with a magnet that engages with the magnet of the head assembly; The main body is electrically connected to the upper and lower circuit boards.

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