Detachable electric toothbrush

Abstract

The utility model discloses a detachable electric toothbrush, including bottom cover subassembly, bottom cover subassembly has the open end, is located the side wall of open end periphery side and is connected and projects to the multiple limiting portions of side wall, and multiple limiting portions enclose and form the installation space, and the installation space is used for installing the battery, toothbrush body is detachably connected with bottom cover subassembly. The utility model technical scheme aims at improving product stability and being convenient for maintenance.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrush technology, and in particular to a detachable electric toothbrush. Background Technology

[0002] Most electric toothbrushes in the current technology adopt a one-piece sealed structure, with the battery permanently sealed inside the toothbrush body, making it impossible for users to replace it themselves. Once the battery ages or is damaged, the entire device becomes unusable, resulting in resource waste and increased usage costs. Although a few have detachable designs, they generally suffer from problems such as loose structure, poor waterproofing, and insecure battery mounting, which can easily lead to poor contact or abnormal noises under high-frequency vibration. Utility Model Content

[0003] The main purpose of this invention is to provide a detachable electric toothbrush, which aims to improve product stability and facilitate maintenance.

[0004] To achieve the above objectives, this utility model proposes a detachable electric toothbrush, comprising: A bottom cover assembly having an open end, a side wall disposed around the open end, and a plurality of limiting portions connected to and protruding from the side wall, the plurality of limiting portions enclosing an installation space for installing a battery; The toothbrush body is detachably connected to the bottom cover assembly.

[0005] In one embodiment, the limiting portion consists of a plurality of protrusions spaced circumferentially along the top surface of the sidewall, and the inner side of each limiting portion abuts against the outer peripheral surface of the battery to restrict the radial movement of the battery within the limiting space.

[0006] In one embodiment, the toothbrush body and the bottom cover assembly are detachably connected by a limiting step structure.

[0007] In one embodiment, the limiting step structure includes a first limiting step and a second limiting step. The lower end of the inner wall of the toothbrush body is provided with the first limiting step, and the bottom cover assembly also has a bottom plate. The bottom plate is located at the end of the side wall away from the limiting part, and the outer periphery of the bottom plate extends outward to provide a second limiting step that cooperates with the first limiting step. The first limiting step and the second limiting step abut against each other in the axial direction.

[0008] In one embodiment, the toothbrush body includes a first outer peripheral surface and a second outer peripheral surface, the first outer peripheral surface and the second outer peripheral surface are connected and enclosed to form an installation cavity, and the inner walls of the first outer peripheral surface and the second outer peripheral surface are provided with stop members, the stop members abutting against the top surface of the side wall.

[0009] In one embodiment, the electric toothbrush further includes a magnetic component and a mounting bracket, both of which are located within the mounting cavity, and the magnetic component is disposed on a side close to the first outer peripheral surface; A rotation locking structure is also provided between the bottom cover assembly and the toothbrush body. The rotation locking structure includes a first guide protrusion and a second guide protrusion spaced apart on the outer periphery of the side wall. A limiting space is formed between the first guide protrusion and the second guide protrusion, and the magnetic component is inserted into the limiting space. When the bottom cover assembly is installed relative to the toothbrush body, the magnetic element abuts against the side wall of the limiting space to restrict the circumferential rotation of the bottom cover assembly. In one embodiment, the bottom cover assembly further has a first stop portion extending from the top surface of the sidewall toward the toothbrush body, and the first stop portion abutting against the mounting bracket.

[0010] In one embodiment, the bottom cover assembly further has a second stop portion extending from the top surface of the sidewall toward the toothbrush body, the second stop portion being disposed opposite to the first stop portion, and the second stop portion abutting against the mounting bracket.

[0011] In one embodiment, the electric toothbrush further includes a wireless charging module and a control board. The wireless charging module is disposed on the inner wall of the base plate, and the control board is located in the mounting cavity. The control board is electrically connected to the wireless charging module.

[0012] In one embodiment, the wireless charging module includes a wireless charging coil, and the inner wall of the base plate is recessed to form a receiving groove, wherein the wireless charging coil is at least partially received in the receiving groove.

[0013] This utility model discloses a detachable electric toothbrush, which mainly includes a bottom cover assembly and a toothbrush body. The bottom cover assembly has an open end with a surrounding sidewall extending from it. Multiple limiting parts are connected to and protrude from the sidewall, forming a mounting space for accommodating the battery. This mounting space not only positions the battery but also applies restraining forces to it from multiple directions through the limiting parts, effectively preventing loosening, displacement, or poor contact during the high-frequency vibration of the electric toothbrush, thus ensuring the stability of the electrical connection and safety of use. The toothbrush body, as the main part of the electric toothbrush, integrates functional modules such as a motor, transmission mechanism, and control circuit. Its lower end is detachably connected to the bottom cover assembly, allowing users to easily separate the bottom cover assembly from the toothbrush body without special tools, directly accessing the battery for replacement or maintenance. This design significantly extends the product's lifespan and reduces long-term usage costs for users. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the structure of an embodiment of the detachable electric toothbrush provided by this utility model; Figure 2 A schematic cross-sectional view of an embodiment of the detachable electric toothbrush provided by this utility model; Figure 3 A schematic diagram of another embodiment of the detachable electric toothbrush provided by this utility model; Figure 4 A schematic diagram of another embodiment of the detachable electric toothbrush provided by this utility model; Figure 5 This is a structural schematic diagram of another embodiment of the detachable electric toothbrush provided by this utility model.

[0016] 10. Bottom cover assembly; 11. Side wall; 12. Limiting part; 13. Installation space; 14. Base plate; 15. First stop part; 16. Second stop part; 17. Receiving groove; 20. Battery; 30. Toothbrush body; 31. First outer peripheral surface; 32. Second outer peripheral surface; 33. Installation cavity; 40. Limiting step structure; 41. First limiting step; 42. Second limiting step; 50. Magnetic component; 60. Mounting bracket; 70. Rotary locking structure; 71. First guide protrusion; 72. Second guide protrusion; 73. Limiting space.

[0017] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] 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 scope of protection of the present utility model.

[0019] 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 specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0020] 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, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. 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.

[0021] This utility model proposes a detachable electric toothbrush.

[0022] Please see Figure 1 This application discloses a detachable electric toothbrush, which includes a toothbrush body, wherein the toothbrush body includes a handle and a brush head detachably connected to the handle. The handle includes a housing and components such as a circuit board, a battery, and a motor disposed within the housing. The battery supplies power to the circuit board and the motor. The circuit board is used to control the motor's operation. The motor's output shaft extends outside the housing to connect with the brush head outside the housing and drive the brush head to vibrate, thereby cleaning the user's oral cavity through the vibrating brush head.

[0023] Reference Figures 1-5 In this embodiment of the invention, a detachable electric toothbrush includes: The bottom cover assembly 10 has an open end, a side wall 11 disposed on the periphery of the open end, and a plurality of limiting parts 12 connected to and protruding from the side wall 11. The plurality of limiting parts 12 enclose and form an installation space 13, which is used to install the battery 20. The toothbrush body 30 is detachably connected to the bottom cover assembly 10.

[0024] This utility model proposes a detachable electric toothbrush, specifically comprising two core components: a bottom cover assembly 10 and a toothbrush body 30. The bottom cover assembly 10 serves as a base for mounting and securing the battery 20. One end of the bottom cover assembly has an open end, from which a sidewall 11 extends. Multiple limiting portions 12 are further connected to and protrude from the inner or outer side of this sidewall 11. These limiting portions 12 are arranged in a specific spatial pattern (e.g., symmetrical distribution or a ring array) to form a closed or semi-closed mounting space 13, specifically designed to accommodate the battery 20 (such as a common cylindrical lithium-ion battery 20 or a nickel-metal hydride battery 20). Through this positioning structure composed of multiple limiting portions 12, the battery 20 can be effectively clamped and positioned after installation, preventing it from shaking, shifting, or even making poor contact during the high-frequency vibration of the toothbrush, thereby ensuring the stability of the electrical connection and the safety of use. Meanwhile, this mechanical limiting method avoids the use of irreversible fixing methods such as adhesives and welding, providing convenience for subsequent disassembly and replacement. The toothbrush body 30, as the main part of the electric toothbrush, typically integrates core functional modules such as the motor, transmission mechanism, and control circuit. Its lower end is detachably connected to the bottom cover assembly 10 using a method such as threaded connection, snap-fit, magnetic connection, or push-pull quick-release structure, allowing users to easily separate the bottom cover assembly 10 from the toothbrush body 30 without special tools, and then directly access the battery 20 in the installation space 13. By efficiently utilizing the internal space of the electric toothbrush, and allowing users or maintenance personnel to easily open the bottom cover to remove or replace the battery 20, the product's lifespan is extended, maintenance costs are reduced, and environmental friendliness and user experience are improved.

[0025] Reference Figures 1-5 In this embodiment of the present invention, the limiting part 12 consists of a plurality of protruding posts spaced circumferentially along the top surface of the side wall 11, and the inner side of each limiting part 12 abuts against the outer peripheral surface of the battery 20 to restrict the radial movement of the battery 20 within the mounting space 13.

[0026] The limiting part 12 is designed as multiple protrusions arranged circumferentially along the top surface of the side wall 11 of the bottom cover assembly 10. The inner surfaces of these protrusions directly abut against the outer circumferential surface of the battery 20, thereby effectively restricting the radial movement of the battery 20 within the installation space 13. This design is essentially a mechanical positioning and constraint mechanism, the core purpose of which is to achieve the fixation and anti-loosening protection of the battery 20 through a simple and reliable structure without the use of adhesives, straps, or additional fasteners. The reason for adopting the form of circumferentially spaced protrusions is that the protrusion structure is easy to integrally mold onto the bottom cover assembly by injection molding or machining, resulting in low manufacturing cost, mature technology, and small space occupation, which can maximize the preservation of the effective volume inside the bottom cover; at the same time, the multiple protrusions are evenly distributed circumferentially, which can apply uniform contact pressure to the outer surface of the cylindrical battery 20 from different angles, forming multi-point support. This not only effectively prevents the battery 20 from swaying, rotating, or shifting (i.e., restricting radial freedom) during the high-frequency vibration operation of the electric toothbrush, but also avoids damage to the battery 20 shell due to excessive force at a single point. In addition, the protrusions only contact the outer periphery of the battery 20 without completely enclosing it, which ensures sufficient limiting effect and makes it easy for users to remove or insert the battery 20 after removing the bottom cover, thus improving the ease of operation.

[0027] Reference Figures 1-5 In this embodiment of the present invention, the toothbrush body 30 and the bottom cover assembly 10 are detachably connected by a limiting step structure 40.

[0028] Specifically, the toothbrush body 30 and the bottom cover assembly 10 are detachably connected via a limiting step structure 40. The limiting step structure 40 refers to the presence of mutually cooperating axial or radial stepped surfaces at the mating points of the toothbrush body 30 and the bottom cover assembly 10 (including, but not limited to, an inner step on the inner wall of the toothbrush body 30 and a corresponding outer step on the outer edge of the bottom cover assembly 10). When both are assembled, the stepped surfaces abut against each other, forming an axial limit to prevent the bottom cover from detaching axially. Simultaneously, circumferential fixation and sealing are achieved through snap-fit, threaded, or interference fit methods. This connection method is essentially a mechanical interlocking structure, designed to ensure a secure and reliable connection while also balancing ease of assembly and disassembly, structural compactness, and good sealing performance. The limiting step structure 40 is adopted primarily because it effectively withstands the axial impact force generated during the high-frequency vibration of the electric toothbrush, preventing the bottom cover from loosening and detaching, thereby improving the overall structural stability and safety. Secondly, the step structure itself does not rely on additional fasteners (such as screws), simplifying the assembly process, reducing manufacturing costs, and making the product appearance more concise and aesthetically pleasing. Furthermore, when the user needs to replace the battery 20, the toothbrush body 30 and the bottom cover assembly 10 can be separated simply by applying an appropriate reverse force (such as rotating or pressing to unlock). The operation is intuitive and requires no tools, greatly improving the convenience of maintenance.

[0029] Reference Figures 1-5 In this embodiment of the present invention, the limiting step structure 40 includes a first limiting step 41 and a second limiting step 42. The lower end of the inner wall of the toothbrush body 30 is provided with the first limiting step 41. The bottom cover assembly 10 also has a bottom plate 14. The bottom plate 14 is located at the end of the side wall 11 away from the limiting part 12. The outer periphery of the bottom plate 14 extends outward and is provided with the second limiting step 42 that cooperates with the first limiting step 41. The first limiting step 41 and the second limiting step 42 abut against each other in the axial direction.

[0030] In this design, the limiting step structure 40 consists of a first limiting step 41 and a second limiting step 42 that cooperate with each other. The lower end of the inner wall of the toothbrush body 30 has the first limiting step 41, while the bottom cover assembly 10, in addition to the side wall 11 and the limiting part 12, also has a base plate 14 located at the end of the side wall 11 away from the limiting part 12. The outer periphery of the base plate 14 extends outward to form the second limiting step 42. When the toothbrush body 30 and the bottom cover assembly 10 are assembled, the first limiting step 41 and the second limiting step 42 abut against each other axially, thereby achieving axial limiting and stable connection between them. This double-step cooperation is advantageous because the axially abutting step surfaces can effectively withstand the high-frequency vibration and axial impact force generated by the motor during the operation of the electric toothbrush, preventing the bottom cover assembly 10 from loosening and falling off during use, significantly improving the overall structural stability. Secondly, the step structure has a positioning function, guiding the bottom cover assembly 10 to be accurately installed into the toothbrush body 30, avoiding misalignment and improving production efficiency and yield. Furthermore, this structure eliminates the need for screws, clips, or other additional fasteners, simplifying the internal construction, reducing material and assembly costs, and resulting in a more streamlined and integrated appearance. More importantly, when users need to replace the battery, they can simply apply an appropriate reverse force (such as rotation or pressing to unlock) to separate the two stepped surfaces, enabling quick disassembly. The operation is intuitive and tool-free, greatly improving the product's maintainability and user experience.

[0031] Reference Figures 1-5 In this embodiment of the present invention, the toothbrush body 30 includes a first outer peripheral surface 31 and a second outer peripheral surface 32. The first outer peripheral surface 31 and the second outer peripheral surface 32 are connected and enclosed to form an installation cavity 33. The inner walls of the first outer peripheral surface 31 and the second outer peripheral surface 32 are provided with stop members, and the stop members abut against the top surface of the side wall 11.

[0032] The toothbrush body 30 includes a first outer peripheral surface 31 and a second outer peripheral surface 32, which are connected and together enclose an internal mounting cavity 33. Meanwhile, stop members are provided on the inner walls of both the first outer peripheral surface 31 and the second outer peripheral surface 32. After the toothbrush body 30 and the bottom cover assembly 10 are assembled, these stop members can abut against the limiting part 12 on the bottom cover assembly 10, thereby forming additional mechanical constraints. When the bottom cover assembly 10 is screwed into or inserted into the toothbrush body 30, the contact between the stop members and the top surface of the side wall 11 not only prevents the bottom cover assembly 10 from going too deep or rotating out of place, but also effectively resists the relative displacement tendency caused by the high-frequency vibration of the motor during the operation of the electric toothbrush, preventing the bottom cover assembly 10 from loosening, making abnormal noises, or even falling off.

[0033] Reference Figures 1-5 In this embodiment of the present invention, the electric toothbrush further includes a magnetic component 50 and a mounting bracket 60. The mounting bracket 40 and the magnetic component 50 are both located in the mounting cavity 33, and the magnetic component 50 is disposed on the side close to the first outer peripheral surface 31. A rotation locking structure 70 is also provided between the bottom cover assembly 10 and the toothbrush body 30. The rotation locking structure 70 includes a first guide protrusion 71 and a second guide protrusion 72 spaced apart on the outer periphery of the side wall 11. A limiting space 73 is formed between the first guide protrusion 71 and the second guide protrusion 72. The magnetic component 50 is inserted into the limiting space 73. When the bottom cover assembly 10 is installed relative to the toothbrush body 30, the magnetic element 50 abuts against the side wall of the limiting space 73 to restrict the circumferential rotation of the bottom cover assembly 10. On the one hand, a mounting cavity 33, formed by a first outer peripheral surface 31 and a second outer peripheral surface 32, is provided inside the toothbrush body 30, and a magnetic component 50 and a mounting bracket 60 are arranged therein, with the magnetic component 50 positioned on the side closer to the first outer peripheral surface 31; on the other hand, a rotation locking structure 70 is added between the bottom cover assembly 10 and the toothbrush body 30. This structure includes a first guide protrusion 71 and a second guide protrusion 72 spaced apart on the outer periphery of the side wall 11 of the bottom cover assembly 10, forming a limiting space 73 between them, and the magnetic component 50 can be inserted into the limiting space 73; when the bottom cover assembly 10 is screwed into or installed into the toothbrush body 30, the magnetic component 50 will abut against the side wall of the limiting space 73 (i.e., the inner surfaces of the two guide protrusions), thereby effectively restricting the circumferential rotation of the bottom cover assembly 10 relative to the toothbrush body 30. The magnetic component 50, originally intended for magnetic attraction (such as for charging docks and travel cases), also functions as a rotation-limiting component. By engaging with the guide protrusions on the bottom cover assembly 10 to create a limiting space, it achieves a dual purpose: retaining the magnetic function while providing a reliable anti-rotation locking effect. This design cleverly avoids the need for additional independent locking parts (such as pins, snap rings, or secondary injection molding structures), saving internal space and reducing assembly complexity and manufacturing costs. Furthermore, the limiting space 73 between the first guide protrusion 71 and the second guide protrusion 72 also guides the assembly, providing a clear alignment path when the user screws the bottom cover in, allowing the magnetic component 50 to slide in smoothly and lock, improving the user experience and assembly reliability. More importantly, this locking method does not affect the axial disassembly and reassembly of the bottom cover (e.g., the limiting can still be released by rotating it at a certain angle), balancing robustness and maintainability.

[0034] Reference Figures 1-5 In this embodiment of the present invention, the bottom cover assembly 10 further has a first stop portion 15, which extends from the top surface of the side wall 11 toward the toothbrush body 30 and abuts against the mounting bracket 60.

[0035] In addition to the existing sidewall 11, limiting part 12, and guide protrusion, the bottom cover assembly 10 also features a first stop part 15. This first stop part 15 extends from the top surface of the sidewall 11 toward the toothbrush body 30 and abuts against the mounting bracket 60 located in the mounting cavity 33 after the bottom cover assembly 10 and the toothbrush body 30 are assembled. This design is essentially an axial pre-positioning and internal component collaborative limiting mechanism, aiming to achieve multiple constraints, improve overall structural rigidity, and optimize assembly accuracy through direct contact between the bottom cover assembly 10 and the internal functional components of the toothbrush body 30. The reason for adding the first stop part 15 and its abutment against the mounting bracket 60 is primarily to provide a clear axial stopping reference during the insertion of the bottom cover assembly 10 into the toothbrush body 30. When the first stop 15 contacts the mounting bracket 60, it indicates that the bottom cover assembly 10 has reached the designed assembly position, preventing damage to internal components (such as the battery 20, magnetic component 50, or circuit board) due to excessive tightening, and also preventing improper assembly from affecting the sealing or locking effect. Secondly, this abutment relationship forms a mechanical linkage between the bottom cover assembly 10 and the mounting bracket 60 inside the toothbrush body 30, allowing the two originally independent components to work together to bear the vibration load when subjected to force, effectively dispersing the high-frequency impact force generated during the operation of the electric toothbrush, thereby reducing local stress concentration and improving the overall durability of the machine. Furthermore, since the mounting bracket 60 itself is used to fix functional components such as the magnetic component 50, The first stop portion 15, when abutting against the magnetic component 50, indirectly enhances the stability of the magnetic component 50's position, preventing it from shifting due to slight movements during long-term use and ensuring the long-term reliability of magnetic functions (such as wireless charging or magnetic base docking). Furthermore, this design eliminates the need for additional parts; simply extending a first stop portion 15 from the top surface of the side wall 11 of the bottom cover assembly 10 achieves axial constraint on the internal support, significantly improving product consistency and reliability without substantially increasing mold complexity or assembly processes. More importantly, when the user removes the bottom cover to replace the battery 20, this stop structure does not obstruct the process, allowing for smooth separation while maintaining both robustness and maintainability. It is understood that the first stop portion 15 may include, but is not limited to, a boss, an L-shaped or hook-shaped latch, or a combination of a beveled guide and a flat stop.

[0036] Reference Figures 1-5 In this embodiment of the present invention, the bottom cover assembly 10 further has a second stop portion 16, which extends from the top surface of the side wall 11 toward the toothbrush body 30. The second stop portion 16 is disposed opposite to the first stop portion 15 and abuts against the mounting bracket 60.

[0037] In addition to the existing first stop 15, a second stop 16 is added to the top surface of the side wall 11 of the bottom cover assembly 10 facing the toothbrush body 30. This second stop 16 is positioned opposite to the first stop 15 (it can be symmetrically distributed circumferentially or located at both ends of the diameter) and also abuts against the mounting bracket 60 inside the toothbrush body 30. By forming at least two symmetrically or spaced stop contact points on the top of the bottom cover assembly 10, multi-directional and balanced mechanical constraints are achieved with the mounting bracket 60. The two oppositely positioned stops create torque balance, effectively preventing the bottom cover assembly 10 from tilting, warping, or becoming loose during use. Furthermore, since the mounting bracket 60 is typically used to fix key functional components such as the magnetic component 50, the first stop portion 15 and the second stop portion 16 simultaneously abut against the mounting bracket 60 from both sides, which not only enhances the positioning rigidity of the mounting bracket 60 itself, but also indirectly stabilizes the position of the magnetic component 50, preventing it from shifting due to long-term vibration, thereby ensuring the long-term reliability of functions such as magnetic charging and magnetic base docking.

[0038] Reference Figures 1-5 In this embodiment of the present invention, the electric toothbrush further includes a wireless charging module and a control board. The wireless charging module is disposed on the inner wall of the base plate 14, and the control board is located in the mounting cavity 33. The control board is electrically connected to the wireless charging module.

[0039] A wireless charging module is added to the inner wall of the base plate 14 of the bottom cover assembly 10, enabling the entire electric toothbrush to receive power without contact. Embedding the wireless charging function into this detachable module, the bottom cover assembly 10, achieves an upgrade in energy supply method and efficient utilization of internal space. The bottom cover assembly 10, as a detachable structure, integrates the wireless charging module, facilitating inspection or replacement of the charging module when maintenance or battery replacement is required, thus improving maintenance convenience. It also avoids placing sensitive electronic components (such as coils, resonant capacitors, and receiving chips) near a high-frequency vibrating motor, reducing the risk of electromagnetic interference and mechanical damage. Furthermore, the base plate 14 is typically a relatively flat and enclosed area. Although its internal space is limited, its structure is stable, making it suitable for embedding flat wireless charging coils and supporting circuitry. Waterproofing and insulation can be achieved through injection molding or potting compound, thus meeting high-level waterproof requirements such as IPX7 without significantly increasing product size. In addition, the axial positioning between the toothbrush body 30 and the bottom cover assembly 10 is achieved through the first limiting step 41 and the second limiting step 42, ensuring stable charging performance with each placement. More importantly, placing the wireless charging module on the base plate 14 rather than inside the toothbrush body 30 helps optimize the overall center of gravity distribution, preventing excessive weight at the top from affecting the grip, and also facilitating modular sharing between different product models. The control board is located in the mounting cavity 33 formed by the toothbrush body 30. The two are electrically connected by wires or flexible circuits, together forming a complete wireless charging and power management system.

[0040] Reference Figures 1-5 In this embodiment of the present invention, the wireless charging module includes a wireless charging coil, and the inner wall of the base plate 14 is recessed to form a receiving groove 17, wherein the wireless charging coil is at least partially received in the receiving groove 17.

[0041] The wireless charging module includes a wireless charging coil, and the inner wall of the base plate 14 of the bottom cover assembly 10 is specially designed with an inwardly recessed receiving groove 17. This receiving groove 17 is used to at least partially accommodate the wireless charging coil, embedding it inside the base plate 14 rather than simply attaching it to the surface. Providing a receiving groove 17 on the inner wall of the base plate 14 to embed the wireless charging coil reduces the overall thickness and maintains the flatness of the product appearance. Embedding the wireless charging coil in the receiving groove 17 avoids the thickening of the bottom cover assembly 10 due to an outwardly protruding structure or affects the fit between the toothbrush bottom and the charging base, thus ensuring that the distance between the wireless charging coil and the external transmitter is minimized, improving wireless charging efficiency. Secondly, the receiving groove 17 provides a positioning reference and mechanical protection for the wireless charging coil, preventing displacement, warping, or wear during transportation, assembly, or high-frequency vibration use, ensuring the long-term stability of electromagnetic coupling. With the bottom cover assembly 10 being a detachable component, pre-installing the wireless charging coil in the receiving groove 17 facilitates modular production and subsequent maintenance. If the wireless charging coil is damaged, only the bottom cover assembly 10 needs to be replaced, without disassembling the entire toothbrush body, which greatly reduces repair costs.

[0042] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A detachable electric toothbrush, characterized in that, include: A bottom cover assembly having an open end, a side wall disposed around the open end, and a plurality of limiting portions connected to and protruding from the side wall, the plurality of limiting portions enclosing an installation space for installing a battery; The toothbrush body is detachably connected to the bottom cover assembly.

2. The detachable electric toothbrush according to claim 1, characterized in that, The limiting part consists of a plurality of protruding posts spaced circumferentially along the top surface of the side wall. The inner side of each limiting part abuts against the outer peripheral surface of the battery to restrict the radial movement of the battery within the installation space.

3. The detachable electric toothbrush according to claim 1, characterized in that, The toothbrush body and the bottom cover assembly are detachably connected via a limiting step structure.

4. The detachable electric toothbrush according to claim 3, characterized in that, The limiting step structure includes a first limiting step and a second limiting step. The lower end of the inner wall of the toothbrush body is provided with the first limiting step. The bottom cover assembly also has a bottom plate. The bottom plate is located at the end of the side wall away from the limiting part. The outer periphery of the bottom plate extends outward and is provided with a second limiting step that cooperates with the first limiting step. The first limiting step and the second limiting step abut against each other in the axial direction.

5. The detachable electric toothbrush according to claim 4, characterized in that, The toothbrush body includes a first outer peripheral surface and a second outer peripheral surface. The first outer peripheral surface and the second outer peripheral surface are connected and enclosed to form an installation cavity. The inner walls of the first outer peripheral surface and the second outer peripheral surface are provided with stop members, and the stop members abut against the top surface of the side wall.

6. The detachable electric toothbrush according to claim 5, characterized in that, The electric toothbrush also includes a magnetic component and a mounting bracket. Both the mounting bracket and the magnetic component are located within the mounting cavity, and the magnetic component is located on the side close to the first outer peripheral surface. A rotation locking structure is also provided between the bottom cover assembly and the toothbrush body. The rotation locking structure includes a first guide protrusion and a second guide protrusion spaced apart on the outer periphery of the side wall. A limiting space is formed between the first guide protrusion and the second guide protrusion, and the magnetic component is inserted into the limiting space. When the bottom cover assembly is installed relative to the toothbrush body, the magnetic element abuts against the side wall of the limiting space to restrict the circumferential rotation of the bottom cover assembly.

7. The detachable electric toothbrush according to claim 6, characterized in that, The bottom cover assembly also has a first stop portion, which extends from the top surface of the side wall toward the toothbrush body and abuts against the mounting bracket.

8. The detachable electric toothbrush according to claim 7, characterized in that, The bottom cover assembly also has a second stop portion, which extends from the top surface of the side wall toward the toothbrush body. The second stop portion is disposed opposite to the first stop portion and abuts against the mounting bracket.

9. The detachable electric toothbrush according to claim 5, characterized in that, The electric toothbrush also includes a wireless charging module and a control board. The wireless charging module is disposed on the inner wall of the base plate, and the control board is located in the mounting cavity. The control board is electrically connected to the wireless charging module.

10. The detachable electric toothbrush according to claim 9, characterized in that, The wireless charging module includes a wireless charging coil, and the inner wall of the base plate is recessed to form a receiving groove, in which the wireless charging coil is at least partially received.

Images