Wireless charging type electric toothbrush and its storage device
The wireless charging electric toothbrush and its storage device address waterproofing and charging inefficiencies by using a metal outer case and stacked induction coils, along with a disinfection feature, enhancing sealing, cleaning ease, and charging efficiency.
Patent Information
- Application Number
- JP2025534321
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-02-06
- Filing Date
- 2025-04-07
- Publication Date
- 2026-03-02
AI Technical Summary
Current electric toothbrushes face issues with waterproofing due to loose seals from removable parts, difficulty in cleaning due to plastic surfaces, and insufficient charging efficiency from small wireless charging structures.
A wireless charging electric toothbrush design featuring a metal outer case, closed-end inner case with stacked induction coils and magnet blocks, and a storage device with disinfection capabilities, enhancing sealing, cleaning ease, and charging efficiency.
Improves waterproofing, simplifies cleaning, and increases charging efficiency while preventing bacterial growth and dirt accumulation, with environmentally friendly materials.
Smart Images

Figure 2026507305000001_ABST
Abstract
Description
[Technical Field]
[0001] The present application relates to the technical field of electric toothbrushes, and more particularly to a wireless charging type electric toothbrush and a storage device thereof. [Background technology]
[0002] As living standards improve, electric toothbrushes have become increasingly commonplace in people's lives, becoming a daily necessity. Because electric toothbrushes come into contact with water during brushing, their waterproof performance is extremely important. First, current electric toothbrushes often have wireless charging components at the bottom, which often require a step-by-step installation or a removable bottom cover, making the seal loose and reducing waterproofing after extended use. Second, electric toothbrushes are often placed in humid environments for long periods of time. Many current electric toothbrushes have plastic bodies, which can easily leave water stains on the surface of the plastic case, making it difficult to clean and prone to deterioration after extended use. Furthermore, the small radial size of electric toothbrushes means that current wireless charging structures lack power, resulting in insufficient charging efficiency. Summary of the Invention [Problem to be solved by the invention]
[0003] The present application aims to solve at least one of the technical problems existing in the prior art by providing a wireless charging electric toothbrush and its storage device that optimizes sealing performance and charging efficiency while also allowing for easy cleaning of the body surface. [Means for solving the problem]
[0004] A wireless charging type electric toothbrush according to an embodiment of the first aspect of the present application includes: The device includes a main body including a cleaning part and a handle connected to each other, the cleaning part is provided with a brush head, the handle includes an outer case and an inner case, the outer case is fitted onto the inner case and is made of metal, the end of the inner case away from the cleaning part is a closed end that is closed and a charging part is provided within the closed end, the charging part includes a magnet block and several induction coils that are stacked, the magnet block is located on the radial outer periphery of the induction coil.
[0005] The wireless charging electric toothbrush described in the embodiment of the first aspect of the present application has at least the following beneficial effects. This embodiment includes a main body including a cleaning section and a handle connected to each other. The cleaning section is provided with a brush head. The handle includes an outer case and an inner case. The outer case is fitted over the inner case and is made of metal, making the surface of the handle easy to clean. The end of the inner case away from the cleaning section is closed, which eliminates the need for removable fittings and significantly improves waterproofing and prevents water leakage due to deterioration or loosening of the seal. A charging component is provided within the closed end. The charging component includes a magnet block and several induction coils arranged in a stacked configuration. The magnet block is located radially around the induction coils and is used to secure the handle to the charging base during charging. The stacked induction coils improve power transmission efficiency in a limited space and further improve charging efficiency.
[0006] According to an embodiment of the first aspect of the present application, a covering portion is provided at the end of the outer case away from the clean portion, covering the outer end surface of the closed end, and the covering portion extends radially of the outer case toward the axis.
[0007] According to an embodiment of the first aspect of the present application, a seal is provided at the end of the inner case that is closer to the clean portion, and a seal ring is provided between the seal and the inner wall of the inner case.
[0008] According to an embodiment of the first aspect of the present application, the inner case is provided with a battery storage section and a motor, and the charging part is fixed to the end of the battery storage section away from the motor.
[0009] According to an embodiment of the first aspect of the present application, at least two magnet blocks are provided, and the two magnet blocks are located on both sides of the induction coil in the radial direction.
[0010] According to an embodiment of the first aspect of the present application, a button is provided on one side of the inner case, and a suction block is provided on the other side of the battery storage section opposite the button.
[0011] A storage device according to an embodiment of the second aspect of the present application includes the wireless charging electric toothbrush, a charging base having a storage chamber into which the handle can be inserted, and several transmitting coils arranged in layers on the charging base, such that when the handle is inserted into the storage chamber, the transmitting coils generate electromagnetic induction with the induction coil, thereby realizing power transmission; A disinfection case including a top cover and a base, the top cover being provided with a disinfection component capable of disinfecting the brush head, the base having a chamber capable of accommodating the main body, a transmitting coil being provided at a position corresponding to the closed end of the base to realize charging of the main body, and the disinfection case having a handle and the base magnetically connected; The wall-mounted case includes a mounting groove capable of accommodating the main body, and the handle and the mounting groove are magnetically connected to fix the main body within the mounting groove.
[0012] The storage device described in the embodiment of the second aspect of the present application has the following beneficial effects. This embodiment includes a charging base, a disinfecting case, and a wall-mounted case. The charging base is used for daily charging, and the disinfecting case is used for storage during travel and can achieve disinfection functions. The wall-mounted case allows the handle to be fixed to the bathroom wall, preventing the body from being placed in a position where water is likely to accumulate and reducing the accumulation of dirt on the handle surface. The charging base has a storage chamber into which the handle can be inserted, and the charging base has several transmitting coils installed in a stacked manner, which helps improve power transmission efficiency and increases charging efficiency. The disinfecting case includes a top cover and a base. The top cover has a disinfecting component that can disinfect the brush head, which prevents bacterial growth during storage during travel and improves the convenience of cleaning the toothbrush. The base has a chamber capable of accommodating the main body, a transmitting coil is provided at the base's closed end to charge the main body, and the handle and base are magnetically connected, thereby realizing disinfection and convenient charging. The wall-mounted case has a mounting groove capable of accommodating the main body, and the handle and mounting groove are magnetically connected to secure the main body in the mounting groove for easy use.
[0013] According to an embodiment of the second aspect of the present application, magnetic blocks are provided in both the base and the wall-mounted case, and when the handle is accommodated in the accommodation chamber or the mounting groove, the magnetic blocks correspond to the position of the suction blocks.
[0014] According to an embodiment of the second aspect of the present application, the disinfecting component is provided with an emitter, the position of the emitter corresponds to the brush head, and the emitter can emit ultraviolet light to achieve the disinfecting function.
[0015] According to an embodiment of the second aspect of the present application, magnet blocks are provided on both radial sides of the transmitting coil, and the magnet blocks maintain stable power transmission between the induction coil and the transmitting coil in the handle.
[0016] Additional aspects and advantages of the present application will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the present application. The present application will be further explained below in conjunction with the drawings and examples. [Brief explanation of the drawings]
[0017] [Figure 1] 1 is an axonometric projection view of a wireless charging type electric toothbrush according to an embodiment of the first aspect of the present application. FIG. [Figure 2] 1 is a cross-sectional view of a wireless charging type electric toothbrush according to an embodiment of the first aspect of the present application. [Figure 3] 1 is an enlarged view of a charging part in an embodiment of the first aspect of the present application. [Figure 4] FIG. 3 is an enlarged view of A in FIG. 2. [Figure 5] FIG. 2 is a cross-sectional view of a disinfection case and a main body in an embodiment of the second aspect of the present application. [Figure 6] FIG. 2 is a partial cross-sectional view of a charging base according to an embodiment of the second aspect of the present application. [Figure 7] FIG. 10 is a diagram showing the configuration of a transmitting coil in a charging base in an embodiment of the second aspect of the present application. [Figure 8] FIG. 10 is a cross-sectional view of a wall case according to an embodiment of the second aspect of the present application. DETAILED DESCRIPTION OF THE INVENTION
[0018] Hereinafter, the embodiments of the present application will be described in detail, and examples of the embodiments are shown in the drawings, where the same or similar reference numerals throughout indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are illustrative and are used to interpret the present application, but should not be understood as limitations on the present application.
[0019] In the description of this application, with regard to orientation descriptions, orientations or positional relationships indicated, for example, up, down, front, back, left, right, etc., are orientations or positional relationships shown in the drawings, and are intended to facilitate and simplify the description of this application, and are not intended to indicate or suggest that the indicated device or element must have a specific orientation or be configured and operated in a specific orientation, and therefore should not be understood as a limitation on this application.
[0020] In the description of this application, "some" means one or more, "plural" means two or more, "greater than," "less than," "more than," etc. are understood to exclude the number, and "greater than," "less than," "less than," etc. are understood to include the number. When "first" and "second" are mentioned, they are intended to distinguish technical features, but should not be understood to indicate or suggest relative importance, to imply the number of the indicated technical features, or to imply a priority relationship between the indicated technical features.
[0021] In the description of this application, unless otherwise expressly limited, the terms "installation," "mounting," "connection," etc. should be understood in a broad sense, and a person skilled in the art can reasonably determine the specific meaning of the above terms in this application by referring to the specific content of the technical solution.
[0022] Referring to FIG. 1 , a wireless charging electric toothbrush according to a first embodiment of the present application includes a main body 100 including a cleaning part 101 and a handle 110 connected to each other. The cleaning part 101 is provided with a brush head 102. The handle 110 includes an outer case 111 and an inner case 112. The outer case 111 is fitted over the inner case 112 and is made of metal, making the surface of the handle 110 easy to clean. Optionally, the outer case 111 may be integrally manufactured using a material such as stainless steel, aluminum alloy, or magnesium alloy, thereby eliminating gaps on the surface, optimizing cleaning convenience, and preventing plastic deterioration. The inner case 112 is fitted into the outer case 111 and is connected to the inner wall of the outer case 111 by adhesive. Securing the outer case 111 and inner case 112 with adhesive simplifies the connection structure, increases the utilization of the internal space, and improves the structural strength of electric toothbrushes, which are often maintenance-free. Alternatively, the inner case 112 is preferably made of a fully degradable PLA material, i.e., a fully biodegradable polylactic acid (Polylactic Acid) material. Polylactic acid has good biocompatibility and biodegradability, and can be completely decomposed into water and carbon dioxide under certain conditions, making it environmentally friendly. Additionally, the brush head 102 can be made of similarly degradable, environmentally friendly materials, such as plant fiber, to reduce environmental pollution.
[0023] 2, the end of inner case 112 away from clean section 101 is closed off as closed end 114, which is integrated with inner case 112, eliminating the need for removable fasteners and significantly improving waterproofing and preventing water leakage due to seal degradation or loosening. A charging component is provided within closed end 114, which includes a magnet block 116 and several stacked induction coils 115. Magnet block 116 is located radially around induction coil 115 and is used to secure handle 110 to charging base 120 during charging. The stacked induction coils 115 improve power transmission efficiency in a limited space and further increase charging efficiency. Optionally, the inner case 112 is provided with a battery compartment 103 and a motor 104, the battery compartment 103 houses a cell 107 electrically connected to a charging component, the battery compartment 103 and the motor 104 are stacked and mounted in the axial direction of the inner case 112, and the charging component is fixed to an end of the battery compartment 103 remote from the motor 104. Optionally, one side of the inner case 112 is provided with a button 105 for realizing a switch or function adjustment, and the other side of the battery compartment 103 opposite the button 105 is provided with a suction block 106 for realizing magnetic connection when the main body 100 is mounted to the wall-mounted case 123 and the disinfection case 130. The motor 104, charging case, and charging parts are all connected and attached in advance, and then integrated and attached by fitting them into an opening near the clean part 101 of the inner case 112. This is advantageous for improving attachment efficiency, and at the same time simplifies the connection structure between the inner case 112 and the internal parts, making it easier to mold and manufacture each part.
[0024] Referring to FIG. 3 , at least two magnet blocks 116 are provided, with the two magnet blocks 116 located on either radial side of the induction coil 115. Preferably, the magnet blocks 116 are arranged in a crescent or semicircular shape to fully utilize the internal space of the inner case 112. Optionally, at least three stacked induction coils 115 are provided. Stacking the coils helps to make the magnetic field distribution more uniform and increase the coupling coefficient between the transmitting coil 122 and the induction coil 115, thereby improving the energy transfer efficiency between the two coils. Furthermore, the multi-layered coils can concentrate more magnetic flux in the effective area, improving the magnetic flux density per unit area and further improving wireless transmission power and efficiency. Furthermore, the stacked coil structure reduces edge effects and allows more energy to be concentrated and transferred within the effective area, significantly improving the efficiency and practicality of the wireless charging system.
[0025] 2, the end of outer case 111 away from clean section 101 is provided with covering section 113 that covers the outer end surface of closed end 114, and covering section 113 extends radially toward the axis of case 111, thereby preventing closed end 114 from slipping out of the opening at the end of case 111. Furthermore, the radial edge of closed end 114 has an escape groove that can accommodate covering section 113, and covering section 113 is fitted into the escape groove so that the outer wall surface at the end of closed end 114 is flush with the wall surface at the end of case 111, thereby improving the appearance and preventing the accumulation of dirt.
[0026] Referring to FIG. 4 , a sealant 117 is provided at the end of the inner case 112 closest to the clean section 101, and a seal ring 118 is provided between the sealant 117 and the inner wall of the inner case 112. The sealant 117 seals the end of the inner case 112 closest to the clean section 101. The sealant 117 has a portion that is inserted into the inner case 112, and the annular seal ring 118 provides a radial seal between the sealant 117 and the inner case 112. Furthermore, there is a gap between the sealant 117 and the outer case 111, and adhesive can be injected to seal the outer case 111 and the sealant 117 and prevent moisture from entering. Optionally, the sealant 117 is made of a fully degradable PLA material to enhance the environmental protection of the product.
[0027] 5 to 8, a storage device according to an embodiment of the second aspect of the present application includes the wireless charging electric toothbrush, wherein the storage device includes a charging base 120, a disinfection case 130, and a wall-mounted case 123, the charging base 120 is used for daily charging, the disinfection case 130 is used for storage when traveling, and can achieve a disinfection function, the wall-mounted case 123 can be fixed to a wall, and the handle 110 is fixed to the wall-mounted case 123, allowing the handle 110 to be fixed to the bathroom wall, preventing the body 100 from being placed in a position where water is likely to accumulate, and reducing the accumulation of dirt on the surface of the handle 110.
[0028] The charging base 120 is provided with a receiving chamber 121 into which the handle 110 can be inserted. The receiving chamber 121 has a certain depth. In the embodiment of the present application, the receiving chamber 121 can completely cover at least the closed end 114, which is advantageous for improving the insertion stability of the handle 110. The charging base 120 is provided with several transmitting coils 122 arranged in a stacked manner, which helps improve power transmission efficiency and enhance charging efficiency. Furthermore, a magnet block 116 is provided radially outward of the transmitting coils 122 of the charging base 120 to magnetically connect the charging base 120 and the handle 110 and facilitate stability during charging.
[0029] The disinfection case 130 includes a top cover 131 and a base 132, which may be connected by a hinge or a sliding cover. The top cover 131 is provided with a disinfection component that can disinfect the brush head 102, thereby preventing bacterial growth when storing the toothbrush for travel and improving the convenience of cleaning the toothbrush. Specifically, the disinfection component is provided with an emitter 134, which is positioned corresponding to the brush head 102 and can emit ultraviolet light to achieve the disinfection function. When the body 100 is placed in the disinfection case 130, disinfection can be performed at any time, improving the cleanliness of the brush head 102 and the convenience of cleaning the toothbrush.
[0030] The base 132 has a storage chamber 133 capable of storing the main body 100, and a transmitting coil 122 is provided at a location corresponding to the closed end 114 within the base 132, with at least three transmitting coils 122 being stacked, thereby realizing efficient charging of the main body 100.
[0031] The magnetic connection between the handle 110 and the base 132 realizes disinfection and convenient charging functions at the same time. The wall-mounted case 123 has a mounting groove 124 for receiving the main body 100. The magnetic connection between the handle 110 and the mounting groove 124 allows the main body 100 to be fixed in the mounting groove 124 for easy use. Specifically, a magnetic block 125 is provided in both the base 132 and the wall-mounted case 123. When the handle 110 is received in the receiving chamber 133 or the mounting groove 124, the magnetic block 125 corresponds to the position of the suction block 106, realizing magnetic attachment of the main body 100 and facilitating insertion and removal. Optionally, the mounting groove 124 has an arcuate surface that matches the curvature of the sidewall of the handle 110, thereby increasing the contact area between the wall-mounted case 123 and the surface of the handle 110 and favoring improved mounting stability. Furthermore, the charging base 120, the disinfection case 130 and the case 111 of the wall-mounted case 123 are all made of degradable and environmentally friendly PLA material, which can be recycled and decomposed, thereby enhancing environmental protection.
[0032] The above describes the embodiments of the present application in detail with reference to the drawings, but the present application is not limited to the above embodiments and various modifications can be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present application. [Explanation of symbols]
[0033] Body 100, cleaning section 101, brush head 102, battery compartment 103, motor 104, button 105, suction block 106, cell 107, connecting rod 108, A handle 110, an outer case 111, an inner case 112, a covering portion 113, a closed end 114, an induction coil 115, a magnet block 116, a sealing material 117, a sealing ring 118, Charging base 120, accommodation chamber 121, transmitting coil 122, wall-mounted case 123, mounting groove 124, magnetic block 125, Disinfection case 130, top cover 131, base 132, storage chamber 133, emitter 134
Claims
1. A wireless charging electric toothbrush, a body including a cleaning section and a handle connected to each other, the cleaning section having a brush head, the handle including an outer case and an inner case, the outer case fitted onto the inner case, the outer case being made of metal, the end of the inner case facing away from the cleaning section being a closed end, a charging component being provided within the closed end, the charging component including a magnet block and several induction coils arranged in a stack, the magnet block being located on the radial outer periphery of the induction coil.
2. The wireless charging electric toothbrush according to claim 1, characterized in that a covering portion that covers the outer end surface of the closed end is provided at the end of the outer case that is away from the cleaning portion, and the covering portion extends radially toward the axis of the outer case.
3. The wireless charging electric toothbrush according to claim 1, characterized in that a sealant is provided at the end of the inner case close to the clean section, and a seal ring is provided between the sealant and the inner wall of the inner case.
4. The wireless charging electric toothbrush according to claim 1, characterized in that the inner case is provided with a battery storage section and a motor, and the charging component is fixed to the end of the battery storage section that is away from the motor.
5. 2. The wireless charging electric toothbrush according to claim 1, wherein at least two magnet blocks are provided, and the two magnet blocks are located on both sides of the induction coil in a radial direction.
6. 5. The wireless charging electric toothbrush according to claim 4, wherein a button is provided on one side of the inner case, and a suction block is provided on the other side of the battery storage compartment opposite the button.
7. A storage device including the wireless charging type electric toothbrush according to any one of claims 1 to 6, wherein the main body is provided with a brush head and a handle, and the handle is provided with an induction coil, a magnet block, and a suction block, a charging base having a storage chamber into which the handle can be inserted, the charging base having a number of transmitting coils stacked on the charging base, the transmitting coils generating electromagnetic induction with the induction coil when the handle is inserted into the storage chamber, and realizing power transmission; A disinfection case including a top cover and a base, the top cover being provided with a disinfection component capable of disinfecting the brush head, the base having a chamber capable of accommodating the main body, the transmitting coil being provided at a position corresponding to the closed end in the base to realize charging of the main body, and the handle and the base being magnetically connected; A storage device characterized by including a wall-mounted case having an attachment groove capable of accommodating the main body, wherein the handle and the attachment groove are magnetically connected to fix the main body within the attachment groove.
8. 8. The storage device according to claim 7, wherein a magnetic block is provided in both the base and the wall-mounted case, and when the handle is accommodated in the accommodation chamber or the mounting groove, the magnetic block corresponds to the position of the suction block.
9. The storage device according to claim 7, wherein the disinfecting component is provided with an emitter, the position of the emitter corresponds to the brush head, and the emitter can emit ultraviolet light to achieve the disinfecting function.
10. The storage device according to claim 7, characterized in that the magnet blocks are provided on both radial sides of the transmitting coil, and the magnet blocks maintain stable power transmission to the induction coil and the transmitting coil in the handle.
Citation Information
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