Charging base and toothbrush assembly

Abstract

The utility model discloses a charging base and a toothbrush assembly, and relates to the technical field of oral cavity cleaning, the charging base comprises a shell, an I-shaped inductor and a circuit board, the I-shaped inductor adopts an integrated design, a transmitting coil, a winding part and a connecting part are integrated, the connecting part is provided with a pin and is directly fixed in an inductor support of the circuit board, and the circuit board is connected with the shell. No extra ferrite magnetic core assembly and alignment operation is needed, the production process is simplified, the production cost is reduced, the dependence on a high-precision mold and assembly equipment is reduced, the assembly efficiency is remarkably improved, and the large-scale mass production requirement is met. Meanwhile, due to the structural stability of the I-shaped inductor, the problem that the I-shaped inductor is easy to fall off in a vibration environment in a traditional glue bonding mode is solved, the reliability of a product is enhanced, and the production cost and the assembly cost are further reduced.

Description

Technical Field

[0001] This application relates to the technical field of oral hygiene, and more particularly to a charging base and toothbrush assembly. Background Technology

[0002] With the increasing adoption of wireless charging technology in personal care devices (such as electric toothbrushes), higher demands are being placed on cost control and assembly efficiency of charging devices. Traditional inductive charging devices typically employ a split structure, using a coil frame as the winding carrier. After the coil is wound, a ferrite core needs to be fixed to the bottom of the coil frame to enhance magnetic coupling efficiency.

[0003] While ferrite cores are crucial for maintaining charging efficiency, their separate procurement and assembly significantly increase material and labor costs, and balancing precision and efficiency is difficult. Because the ferrite core and coil frame are separate structures, precise alignment of the core and coil relies on high-precision molds and assembly equipment, leading to longer production cycles and reduced mass production efficiency. Furthermore, the core is typically glued to the coil frame, which is prone to detachment in vibrating environments; increasing bonding strength requires high-cost specialty adhesives, further exacerbating cost pressures.

[0004] This makes traditional solutions insufficient to meet the dual demands of low cost and high reliability for consumer electronics. Therefore, there is an urgent need for a new charging device design that can integrate the ferrite core and coil frame structure, reduce reliance on high-precision assembly equipment, and improve assembly efficiency and product reliability to meet the needs of mass production and effectively control costs. Utility Model Content

[0005] The main purpose of this application is to provide a charging base and toothbrush assembly, which aims to solve the technical problem that traditional solutions cannot meet the dual requirements of low cost and high reliability for consumer electronic devices.

[0006] To achieve the above objectives, this application proposes a charging base for charging an electric toothbrush, the charging base comprising:

[0007] case;

[0008] An I-shaped inductor includes a transmitting coil, a winding portion, and a connecting portion, wherein the connecting portion is located at at least one end of the winding portion, the connecting portion is provided with a lead, and the transmitting coil is wound on the winding portion;

[0009] The circuit board is disposed inside the housing. The circuit board includes a wireless charging circuit and an inductor bracket. The inductor bracket is fixed on the circuit board, and the connecting part is disposed inside the inductor bracket. The wireless charging circuit is electrically connected to the connecting part and is used to drive the I-shaped inductor to work.

[0010] In one embodiment, it further includes:

[0011] A heat shrink tubing is fitted onto the I-shaped inductor, and the heat shrink tubing is used to absorb the vibrations felt by the I-shaped inductor.

[0012] In one embodiment, the inductor support includes:

[0013] The placement base has a slot inside, and a hole is opened at the bottom of the slot. One end of the I-shaped inductor is placed inside the slot, and the pin of the connecting part passes through the hole and is electrically connected to the wireless charging circuit.

[0014] The bracket foot has one end fixedly connected to the placement base and the other end fixedly connected to the circuit board.

[0015] In one embodiment, a limiting protrusion is provided in the slot, and the end of the winding portion facing the connecting portion contacts the upper surface of the limiting protrusion.

[0016] In one embodiment, the housing surface is provided with at least two charging sections, each of which is used to hold an electric toothbrush to be charged, and the I-shaped inductor is disposed below the charging section.

[0017] In one embodiment, a receiving cavity is provided within the housing, and the I-shaped inductor and the circuit board are disposed within the receiving cavity. The charging unit includes:

[0018] A charging slot is provided on the surface of the housing, the charging slot being used to accommodate an electric toothbrush;

[0019] A fixing post is disposed in the charging slot and is adapted to the fixing slot of the electric toothbrush; the fixing post is provided with a cavity communicating with the receiving cavity, and the end of the I-shaped inductor facing away from the circuit board is disposed in the cavity.

[0020] In one embodiment, a support groove is provided at the cavity opening, and the end of the inductor support facing the fixed column is disposed in the support groove.

[0021] In one embodiment, the wireless charging circuit includes:

[0022] Control circuitry is used to drive the I-shaped inductor to operate;

[0023] The power management circuit is electrically connected to an external power source. The power input circuit is used to convert the external power source into DC voltage and provide power to the control circuit and the I-shaped inductor.

[0024] In addition, to achieve the above objectives, this application also proposes a toothbrush assembly, including an electric toothbrush and a charging base as described above.

[0025] In one embodiment of the toothbrush assembly, it further includes:

[0026] A receiving coil, located inside the electric toothbrush, is used to receive signals transmitted by the transmitting coil and convert them into electrical energy.

[0027] One or more technical solutions proposed in this application have at least the following technical effects:

[0028] The charging base of this application includes a housing, an I-shaped inductor, and a circuit board. The I-shaped inductor features an integrated design, combining the transmitting coil, winding section, and connecting section into a single unit. The connecting section has pins and is directly fixed within the inductor bracket of the circuit board, eliminating the need for additional ferrite core assembly and alignment operations. This simplifies the production process, reduces production costs, decreases reliance on high-precision molds and assembly equipment, and improves assembly efficiency, meeting the demands of large-scale mass production. Furthermore, the structural stability of the I-shaped inductor avoids the problem of easy detachment in vibration environments associated with traditional glue bonding methods, enhancing product reliability and further reducing production and assembly costs. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the internal structure of a charging dock according to this application;

[0032] Figure 2 for Figure 1 A magnified view of part of AA;

[0033] Figure 3 This is a schematic diagram of an I-shaped inductor structure for a charging base according to this application;

[0034] Figure 4 This is a cross-sectional view of a charging dock according to this application;

[0035] Figure 5 This is a schematic diagram of a wireless charging circuit for a charging dock according to this application.

[0036] Reference numerals: 01. Housing; 11. Charging section; 12. Charging slot; 13. Fixing post; 14. Cavity; 15. Bracket slot; 02. I-shaped inductor; 21. Transmitting coil; 22. Winding section; 23. Connecting section; 03. Circuit board; 31. Control circuit; 32. Power management circuit; 04. Inductor bracket; 41. Placement seat; 42. Bracket foot; 43. Slot; 44. Limiting protrusion; 05. Heat shrink tubing.

[0037] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0041] This application proposes a charging base for charging an electric toothbrush, such as... Figure 1 and Figure 2 As shown, the charging dock includes:

[0042] Casing 01;

[0043] The I-shaped inductor 02 includes a transmitting coil 21, a winding portion 22, and a connecting portion 23. The connecting portion 23 is located at at least one end of the winding portion 22 and has pins. The transmitting coil 21 is wound around the winding portion 22.

[0044] Circuit board 03 is disposed inside housing 01. Circuit board 03 includes wireless charging circuit and inductor bracket 04. Inductor bracket 04 is fixed on circuit board 03, and connection part 23 is disposed inside inductor bracket 04. Wireless charging circuit is electrically connected to connection part 23 for driving I-shaped inductor 02 to work.

[0045] Specifically, with the increasing prevalence of wireless charging technology in personal care devices, higher demands are being placed on cost control and assembly efficiency of charging devices. Traditional inductive charging devices typically employ a split structure, using a coil frame as the winding carrier. After the coil is wound, a ferrite core needs to be fixed to the bottom of the coil frame to enhance magnetic coupling efficiency. The coil frame and the core need to be manufactured separately and then assembled, increasing production steps and labor costs. For example, the core position must be precisely aligned after the coil is wound; otherwise, assembly deviations can lead to uneven magnetic field distribution and reduced efficiency. Simultaneously, the coil frame needs to reserve space for core installation, resulting in an increase in overall thickness (typically, a split design is 30%–50% thicker than a one-piece design). Ferrite cores have a high density (5g / cm³), and a split design requires a larger core to cover the coil area, increasing weight and affecting portability and installation flexibility.

[0046] Furthermore, the fixing of magnetic cores often relies on adhesives or mechanical clips, which are susceptible to process fluctuations (such as uneven adhesive curing), leading to poor contact or increased air gaps, significantly weakening coupling efficiency (efficiency may decrease by 5% to 10% for every 1mm increase in air gap). In addition, magnetic cores are usually glued to the coil frame, which is prone to detachment in vibrating environments, and improving the bonding strength requires the use of high-cost special adhesives, further exacerbating cost pressures.

[0047] To address the aforementioned issues, this application proposes a charging base that, through structural optimization, reduces reliance on the separate assembly of ferrite cores, simplifies the production process, improves assembly efficiency, and enhances product reliability in vibration environments, thereby effectively controlling costs and meeting the demands of mass production. The charging base includes a housing 01, an I-shaped inductor 02, and a circuit board 03. Overall, the I-shaped inductor 02 and circuit board 03 are housed within the housing 01. The I-shaped inductor 02 is fixed to the circuit board 03 via an inductor bracket 04. The wireless charging circuit on the circuit board 03 is electrically connected to the I-shaped inductor 02, driving it to operate. Because the I-shaped inductor 02 adopts an integrated design, no additional space is needed to install the magnetic core, significantly reducing the thickness of the charging base. This also reduces the amount of ferrite core used, lowering the overall weight and improving portability and installation flexibility. Furthermore, it avoids the use of adhesives or mechanical clips, reducing performance degradation due to process variations and enhancing product reliability in vibration environments. Furthermore, the integrated design reduces the air gap between the magnetic core and the coil, optimizes the magnetic field distribution, and further improves the magnetic coupling efficiency.

[0048] Among them, such as Figure 2 As shown, the I-shaped inductor 02 includes a transmitting coil 21, a winding portion 22, and a connecting portion 23. The connecting portion 23 is located at at least one end of the winding portion 22, and the transmitting coil 21 is wound around the winding portion 22. More specifically, the winding portion 22 is typically cylindrical or cuboid and is used to wind the transmitting coil 21 (i.e., the inductor winding). The transmitting coil 21 generates an alternating magnetic field after being energized, and is the core component for wireless energy transmission. As the carrier of the transmitting coil 21, the winding portion 22 has an I-shaped design, ensuring that the transmitting coil 21 can be wound uniformly, avoiding coil concentration or looseness, thereby generating a stable alternating magnetic field and improving energy transmission efficiency. The I-shaped cross-section design of the winding portion 22 ensures that the transmitting coil 21 is wound with uniform tension and avoids interlayer slippage. Compared with traditional cylindrical winding, the corner support of the I-shaped structure improves the uniformity of coil distribution density and magnetic field uniformity.

[0049] The connecting part 23 is located at one or both ends of the winding part 22 and is provided with pins (metal terminals). The pins connect the transmitting coil 21 to the wireless charging circuit in the circuit board 03. The connecting part 23 is integrally formed with the winding part 22 through injection molding. The inductor bracket 04 is fixed on the circuit board 03, and the connecting part 23 of the H-shaped inductor 02 is set inside the inductor bracket 04 to ensure a stable connection between the H-shaped inductor 02 and the circuit board 03. The inductor bracket 04 includes a main structure and a support. The main structure is used to place the H-shaped inductor 02. Optimally, the contact surface between the main structure and the H-shaped inductor 02 can be provided with a limit structure made of elastic material to absorb vibration energy. The bracket ensures a stable connection between the H-shaped inductor 02 and the circuit board 03, simplifies the assembly process, and thus reduces assembly costs.

[0050] Meanwhile, the electric toothbrush that matches the charging base has a receiving coil inside. The receiving coil and the transmitting coil 21 of the charging base achieve energy transfer through the principle of electromagnetic induction. When the circuit board 03 of the charging base is powered on, the wireless charging circuit provides high-frequency alternating current to the transmitting coil, driving the transmitting coil 21 of the I-shaped inductor 02 to work. The transmitting coil 21 is evenly wound on the winding part 22. After being powered on, it generates an alternating magnetic field. The alternating magnetic field propagates through space and is captured by the receiving coil inside the electric toothbrush. The receiving coil converts the alternating magnetic field into electrical energy to charge the battery of the electric toothbrush.

[0051] The charging base of this application includes a housing 01, an I-shaped inductor 02, and a circuit board 03. The I-shaped inductor 02 adopts an integrated design, combining the transmitting coil 21, the winding portion 22, and the connecting portion 23 into one unit. The connecting portion 23 has pins and is directly fixed within the inductor bracket 04 of the circuit board 03, eliminating the need for additional ferrite core assembly and alignment operations. This simplifies the production process, reduces production costs, decreases reliance on high-precision molds and assembly equipment, and improves assembly efficiency, meeting the needs of large-scale mass production. Simultaneously, the structural stability of the I-shaped inductor 02 avoids the problem of easy detachment in vibration environments caused by traditional glue bonding methods, enhancing product reliability and further reducing production and assembly costs.

[0052] In one embodiment, the charging dock further includes:

[0053] Heat shrink tubing 05 is fitted onto the I-shaped inductor 02. The heat shrink tubing 05 absorbs vibrations experienced by the I-shaped inductor 02. Heat shrink tubing 05 is a tubular product made of polymer material that shrinks to 1 / 2 to 1 / 6 of its original diameter when heated. It can wrap wire joints and solder joints to prevent short circuits or leakage, and protect cables and pipes from wear, corrosion, or external impacts. In this embodiment, the heat shrink tubing 05, through its elastic properties, can effectively absorb the mechanical stress experienced by the I-shaped inductor 02 in a vibrating environment, preventing the coil from loosening or shifting, reducing wear on the I-shaped inductor 02 during long-term use, and extending its service life. Furthermore, the heat shrink tubing 05 provides insulation protection, preventing electrical contact between the I-shaped inductor 02 and other components, thus improving safety. During assembly, heat shrink tubing 05 is fitted onto the I-shaped inductor 02. Heating causes it to shrink and tightly wrap around the inductor, ensuring its stability. The use of heat shrink tubing 05 eliminates the need for complex fixing structures, further simplifying the assembly process and reducing production costs. It is worth noting that the material of heat shrink tubing 05 must be a high-temperature resistant and wear-resistant polymer to adapt to the working environment of the charging base.

[0054] In one embodiment, such as Figure 3 As shown, the inductor bracket 04 includes:

[0055] A placement base 41 has a slot 43 with a hole at its bottom. One end of the I-shaped inductor 02 is placed inside the slot 43, and the pin of the connecting part 23 passes through the hole and is electrically connected to the wireless charging circuit. A support foot 42 is fixedly connected at one end to the placement base 41 and at the other end to the circuit board 03. The slot 43 is used to accurately position and fix the I-shaped inductor 02, ensuring a stable and reliable connection between it and the circuit board 03. The shape and size of the slot 43 match one end of the winding part 22 of the I-shaped inductor 02, ensuring that the I-shaped inductor 02 can be stably placed inside the slot 43, avoiding displacement caused by vibration or external force. The support foot 42 is used to support and fix the placement base 41, ensuring the relative position between the I-shaped inductor 02 and the circuit board 03 is stable. At the same time, the support foot 42 can conduct vibration outwards, reducing the impact of vibration on the I-shaped inductor 02.

[0056] In one embodiment, a limiting protrusion 44 is provided within the slot 43. The end of the winding portion 22 facing the connecting portion 23 contacts the upper surface of the limiting protrusion 44 to limit the position of the I-shaped inductor 02 within the slot 43, ensuring its installation accuracy. The limiting protrusion 44 enables the I-shaped inductor 02 to be installed quickly and accurately, reducing reliance on high-precision assembly equipment and lowering assembly complexity. More specifically, the limiting protrusion 44 can be made of an elastic material to absorb vibration energy and reduce the risk of displacement of the I-shaped inductor 02 in a vibrating environment.

[0057] In one embodiment, such as Figure 1 As shown, at least two charging sections 11 are provided on the surface of the housing 01. Each charging section 11 is used to hold an electric toothbrush to be charged, and the I-shaped inductor 02 is located below the charging section 11. This is to meet the requirement of multiple charging positions. In practical applications, the number of charging sections 11 can be adjusted according to the user group. The I-shaped inductor 02 is located below the charging section 11. This one-to-one correspondence ensures that each charging section 11 can receive appropriate power output and control, avoiding waste of power resources and potential safety risks during the charging process. Since each charging section 11 and the I-shaped inductor 02 are independent, they can independently perform power output and control. This means that even if one charging section 11 fails, it will not affect the normal operation of other charging units. This design improves the reliability and stability of the entire charging structure.

[0058] In one embodiment, such as Figure 4As shown, the housing 01 has a receiving cavity, and the I-shaped inductor 02 and circuit board 03 are disposed within the receiving cavity. The charging unit 11 includes: a charging slot 12 disposed on the surface of the housing 01, the charging slot 12 being used to accommodate the electric toothbrush; and a fixing post 13 disposed within the charging slot 12, the fixing post 13 being adapted to the fixing slot of the electric toothbrush. The charging slot 12 is disposed on the surface of the housing 01, and its shape and size must ensure that it can perfectly accommodate the bottom end of the electric toothbrush. At the same time, the depth of the charging slot 12 is moderate, which can both firmly support the electric toothbrush and facilitate the user to easily put in or take out the electric toothbrush.

[0059] A fixing post 13 is provided inside the charging slot 12. Its function is to insert the fixing post 13 into the fixing slot of the electric toothbrush when it is placed in the charging slot 12, thus providing additional fixation and support to prevent the electric toothbrush from shaking or falling off during charging, ensuring charging stability and safety. Simultaneously, a cavity 14 communicating with the receiving cavity is provided inside the fixing post 13, and the end of the I-shaped inductor 02 facing away from the circuit board 03 is disposed within the cavity 14. The fixing post 13 not only fixes the electric toothbrush but also ensures alignment between the electric toothbrush and the transmitting coil 21 of the charging base, reducing energy loss during transmission and improving charging efficiency. Furthermore, the cavity 14 within the fixing post 13 provides additional installation space for the I-shaped inductor 02, making the internal structure more compact and further optimizing the internal structural layout, which is beneficial for achieving a thinner and lighter design of the charging base.

[0060] In one embodiment, a support groove 15 is provided at the opening of the cavity 14, and the end of the inductor bracket 04 facing the fixed post 13 is disposed in the support groove 15. The support groove 15 provides a clear installation reference for the inductor bracket 04, ensuring that the positional relationship between the inductor bracket 04 and the fixed post 13 is accurate and avoiding assembly deviations. The support groove 15 enables the H-shaped inductor 02 and one end of the inductor bracket 04 to be stably installed in the cavity 14, reducing the risk of displacement caused by vibration or external force. This embodiment further optimizes the installation accuracy and stability of the inductor bracket 04. The support groove 15 not only improves the assembly accuracy but also enhances the product's vibration resistance and reliability, while simplifying the assembly process and reducing production costs.

[0061] In one embodiment, such as Figure 5 As shown, the wireless charging circuit includes:

[0062] The control circuit 31 drives the I-shaped inductor 02; the power management circuit 32 is electrically connected to an external power source. The power input circuit converts the external power source into DC voltage and provides power to the control circuit 31 and the I-shaped inductor 02. The control circuit 31 typically includes components such as an oscillator, driver, and power amplifier to generate high-frequency AC power and regulate its frequency and power. The control circuit 31 may also integrate protection functions to ensure system safety and reliability. The power management circuit 32 typically includes components such as a rectifier, filter, and voltage regulator to provide a stable power output. The power management circuit 32 may also integrate charging management functions to optimize energy transfer efficiency and extend battery life.

[0063] Furthermore, to achieve the above objectives, this application also proposes a toothbrush assembly, including an electric toothbrush and a charging base as described above. The charging base includes a housing 01; an I-shaped inductor 02, including a transmitting coil 21, a winding portion 22, and a connecting portion 23, wherein the connecting portion 23 is located at at least one end of the winding portion 22, the connecting portion 23 has pins, and the transmitting coil 21 is wound around the winding portion 22; and a circuit board 03, which is disposed within the housing 01. The circuit board 03 includes a wireless charging circuit and an inductor support 04, the inductor support 04 is fixed to the circuit board 03, and the connecting portion 23 is disposed within the inductor support 04. The wireless charging circuit is electrically connected to the connecting portion 23 for driving the I-shaped inductor 02 to operate.

[0064] The charging base of this application includes a housing 01, an I-shaped inductor 02, and a circuit board 03. The I-shaped inductor 02 adopts an integrated design, combining the transmitting coil 21, the winding portion 22, and the connecting portion 23 into one unit. The connecting portion 23 has pins and is directly fixed within the inductor bracket 04 of the circuit board 03, eliminating the need for additional ferrite core assembly and alignment operations. This simplifies the production process, reduces production costs, decreases reliance on high-precision molds and assembly equipment, and improves assembly efficiency, meeting the needs of large-scale mass production. Simultaneously, the structural stability of the I-shaped inductor 02 avoids the problem of easy detachment in vibration environments caused by traditional glue bonding methods, enhancing product reliability and further reducing production and assembly costs.

[0065] In one embodiment of the toothbrush assembly, it further includes:

[0066] A receiving coil, located inside the electric toothbrush, receives signals transmitted by the transmitting coil 21 and converts them into electrical energy. The receiving coil, through the principle of electromagnetic induction, captures the alternating magnetic field generated by the transmitting coil 21 of the charging base, converts the alternating magnetic field into alternating current, and then converts it into direct current through a rectifier circuit to charge the electric toothbrush's battery. Wireless charging between the charging base and the electric toothbrush is achieved through the receiving coil and the transmitting coil 21.

[0067] The above embodiments are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A charging base for charging an electric toothbrush, characterized in that, The charging dock includes: case; An I-shaped inductor includes a transmitting coil, a winding portion, and a connecting portion, wherein the connecting portion is located at at least one end of the winding portion, the connecting portion is provided with a lead, and the transmitting coil is wound on the winding portion; The circuit board is disposed inside the housing. The circuit board includes a wireless charging circuit and an inductor bracket. The inductor bracket is fixed on the circuit board, and the connecting part is disposed inside the inductor bracket. The wireless charging circuit is electrically connected to the connecting part and is used to drive the I-shaped inductor to work.

2. The charging dock as described in claim 1, characterized in that, Also includes: A heat shrink tubing is fitted onto the I-shaped inductor, and the heat shrink tubing is used to absorb the vibrations sensed by the I-shaped inductor.

3. The charging dock as described in claim 1, characterized in that, The inductor support includes: The placement base has a slot inside, and a hole is opened at the bottom of the slot. One end of the I-shaped inductor is placed inside the slot, and the pin of the connecting part passes through the hole and is electrically connected to the wireless charging circuit. The bracket foot has one end fixedly connected to the placement base and the other end fixedly connected to the circuit board.

4. The charging dock as described in claim 3, characterized in that, A limiting protrusion is provided inside the slot, and the end of the winding portion facing the connecting portion contacts the upper surface of the limiting protrusion.

5. The charging dock as described in claim 3, characterized in that, The housing surface is provided with at least two charging sections, each of which is used to hold an electric toothbrush to be charged, and the I-shaped inductor is disposed below the charging section.

6. The charging dock as described in claim 5, characterized in that, The housing has a receiving cavity, the I-shaped inductor and the circuit board are disposed within the receiving cavity, and the charging unit includes: A charging slot is provided on the surface of the housing, the charging slot being used to accommodate an electric toothbrush; A fixing post is disposed in the charging slot and is adapted to the fixing slot of the electric toothbrush; the fixing post is provided with a cavity communicating with the receiving cavity, and the end of the I-shaped inductor facing away from the circuit board is disposed in the cavity.

7. The charging dock as described in claim 6, characterized in that, A support groove is provided at the opening of the cavity, and the end of the inductor support facing the fixed column is set in the support groove.

8. The charging dock as described in any one of claims 1-7, characterized in that, The wireless charging circuit includes: Control circuitry is used to drive the I-shaped inductor to operate; The power management circuit is electrically connected to an external power source. The power input circuit is used to convert the external power source into DC voltage and provide power to the control circuit and the I-shaped inductor.

9. A toothbrush assembly, characterized in that, Includes an electric toothbrush and a charging base as described in any one of claims 1-8.

10. The toothbrush assembly as claimed in claim 9, characterized in that, Also includes: A receiving coil, located inside the electric toothbrush, is used to receive signals transmitted by the transmitting coil and convert them into electrical energy.

Images