Wireless charging base and toothbrush suite

Abstract

The embodiment of the utility model discloses a wireless charging base and a toothbrush suite, the wireless charging base is used for wirelessly charging a personal care appliance, a magnetic part and a charging coil are arranged at the bottom of the personal care appliance, and the wireless charging base comprises a shell, a transmitting coil, a first magnet and a second magnet, and the transmitting coil, the first magnet and the second magnet are mounted in the shell; the shell is provided with an adsorption surface used for being attached to the bottom face of the personal care appliance. The first magnet and the second magnet are arranged along the circumferential direction of the charging coil, and the magnetic poles of the first magnet and the second magnet towards the adsorption surface are different; the first magnet is used for being magnetically attracted with the magnetic part, the second magnet is used for being magnetically repelled with the magnetic part and can drive the personal care appliance to rotate until the magnetic part is matched with the first magnet in a para-position magnetic attraction mode, and the charging coil is matched with the transmitting coil in a para-position mode. According to the wireless charging seat, the coil of the personal care appliance can be automatically aligned with the coil of the charging seat, so that the wireless charging efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of wireless charging technology, and in particular to a wireless charging stand and a toothbrush kit. Background Art

[0002] With the rapid advancement of science and technology, wireless charging technology, as an innovative way of power transmission, has been widely used in many fields. For example, in personal care products such as electric toothbrushes, electric water flossers, and electric shavers, wireless charging technology has greatly improved the user's convenience and comfort. Wireless charging technology is mainly based on the principle of electromagnetic induction, and realizes wireless transmission of electric energy through magnetic field coupling between the transmitting end (the coil in the charging base) and the receiving end (the coil at the bottom of the product to be charged). When the two coils are in the best alignment state, the magnetic field coupling efficiency is the highest and the charging speed is the fastest. However, in actual applications, users are often accustomed to placing the product to be charged randomly when using it, rather than deliberately aligning it with the coil on the charging base. This casual operating habit often makes it difficult to achieve precise alignment of the coil, resulting in low charging efficiency.

[0003] The above content is only used to assist in understanding the technical solution of the utility model and does not constitute an admission that the above content is prior art. Utility Model Content

[0004] In view of the above problems, the present invention proposes a wireless charging stand, which aims to solve the technical problem of low wireless charging efficiency caused by the difficulty in aligning the coil of the personal care appliance and the coil of the charging stand.

[0005] To achieve the above-mentioned purpose, the wireless charging stand proposed in the present invention is used for wireless charging of personal care appliances. The bottom of the personal care appliance is provided with a magnetic part and a charging coil, wherein:

[0006] The wireless charging stand includes a shell, a transmitting coil installed in the shell, a first magnet and a second magnet;

[0007] The housing has an adsorption surface for contacting with the bottom surface of the personal care appliance;

[0008] The first magnet and the second magnet are arranged along the circumference of the charging coil, and the magnetic pole of the first magnet facing the adsorption surface is different from the magnetic pole of the second magnet facing the adsorption surface;

[0009] The first magnet is used to magnetically attract the magnetic part, and the second magnet is used to magnetically repel the magnetic part, and can drive the personal care appliance to rotate until the magnetic part and the first magnet are aligned and magnetically matched, and the charging coil and the transmitting coil are aligned and matched.

[0010] In one embodiment, the adsorption surface is provided with a rotation positioning portion for rotatably cooperating with the bottom of the personal care appliance.

[0011] In one embodiment, the rotation positioning portion includes a central protrusion provided on the adsorption surface, the central protrusion is arranged corresponding to the transmitting coil, and the first magnet and the second magnet surround the outer circumference of the transmitting coil.

[0012] In one embodiment, a plurality of the first magnets and a plurality of the second magnets are provided, a first magnet is provided between two adjacent second magnets, and a second magnet is provided between two adjacent first magnets.

[0013] In one embodiment, two of the first magnet and two of the second magnet are provided, the two first magnets are provided on two opposite sides of the transmitting coil, and the two second magnets are provided on the other two opposite sides of the transmitting coil.

[0014] In one embodiment, the first magnet, the second magnet, and the transmitting coil are all fixed to an inner wall surface of the housing opposite to the adsorption surface, so that the first magnet, the second magnet, and the transmitting coil are adjacent to the adsorption surface.

[0015] In one embodiment, the wireless charging stand further includes a circuit board electrically connected to the transmitting coil, the circuit board is installed in the shell, and the transmitting coil and the circuit board are staggered in the extension direction of the adsorption surface.

[0016] In one embodiment, the wireless charging stand further includes a counterweight installed in the shell, and an embedding groove is provided on the wall surface of the counterweight facing the adsorption surface, and the circuit board, the transmitting coil, the first magnet and the second magnet are all arranged in the embedding groove.

[0017] In one embodiment, a glue-containing space is formed between the embedding groove and the shell, and the glue-containing space is filled with sealant to seal and fix the transmitting coil, the first magnet, the second magnet and the circuit board.

[0018] In one embodiment, a bottom wall surface of the embedding groove is provided with a glue injection port that passes through the counterweight block, and the glue injection port and the circuit board are arranged on opposite sides of the center line of the transmitting coil; and / or the shape of the embedding groove is symmetrical about the center line of the transmitting coil.

[0019] In one embodiment, the wireless charging stand further includes a counterweight and a circuit board installed in the shell, the counterweight is made of metal, and an embedding groove is formed on the counterweight, and the circuit board is arranged in the embedding groove.

[0020] The present invention further provides a toothbrush kit, comprising an electric toothbrush and a wireless charging stand as described in any of the above embodiments, wherein a magnetic member and a charging coil are provided at the bottom of the electric toothbrush, the bottom surface of the electric toothbrush is in contact with the adsorption surface of the wireless charging stand, and the charging coil corresponds to the transmitting coil of the wireless charging stand;

[0021] The magnetic member is aligned and adsorbed with the first magnet of the wireless charging stand;

[0022] The second magnet of the wireless charging stand magnetically repels the magnetic part, and the magnetic repulsion between the second magnet and the magnetic part is greater than the gravity of the electric toothbrush, so as to drive the electric toothbrush to rotate until the magnetic part and the first magnet are aligned and magnetically engaged, and the charging coil and the transmitting coil are aligned and engaged.

[0023] In one embodiment, the magnetic member has the same shape and size as the first magnet.

[0024] In one embodiment, the ratio of the magnetic repulsion between the second magnet and the magnetic member to the gravity of the electric toothbrush is greater than 1.1, and / or the ratio of the magnetic attraction between the first magnet and the magnetic member to the gravity of the electric toothbrush is greater than 0.8.

[0025] The present invention provides a wireless charging station with a first magnet and a second magnet disposed around the circumference of the charging coil. The first magnet and the second magnet have different magnetic attraction directions toward the adsorption surface. The first magnet is magnetically attracted to the magnetic component in the personal care appliance, while the second magnet is used to magnetically repel the magnetic component in the personal care appliance, thereby driving the personal care appliance to rotate until the magnetic component aligns with the first magnet. In this way, when a user places the personal care appliance on the charging station at an incorrect angle (i.e., there is an angular difference between the first magnet and the magnetic component in the personal care appliance), the second magnet can rotate the personal care appliance to a certain angle through the repulsive force with the magnetic component. Subsequently, the alignment and magnetic attraction of the first magnet and the magnetic component can align the charging coil with the transmitting coil. This allows the personal care appliance to automatically correct its charging position on the charging station, automatically aligning the transmitting coil in the charging station with the charging coil of the personal care appliance, and thereby improving wireless charging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1Shows a structural schematic diagram of an embodiment of the wireless charging stand of the utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the wireless charging station;

[0029] Figure 3 for Figure 2 An exploded view of the wireless charging station from another angle;

[0030] Figure 4 This is a structural diagram of an embodiment of a counterweight block of a wireless charging stand of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the wireless charging stand of the present invention after the shell is removed;

[0032] Figure 6 This is a cross-sectional view of the wireless charging stand of the present invention at one angle;

[0033] Figure 7 This is a structural diagram of an embodiment of a toothbrush kit of the present invention;

[0034] Figure 8 for Figure 7 Schematic diagram of the exploded structure of the toothbrush kit;

[0035] Figure 9 for Figure 7 a cross-sectional view of the toothbrush kit at one angle;

[0036] Figure 10 for Figure 9 A partial enlarged view of point A in the middle.

[0037] Description of Figure Numbers:

[0038] Label name Label name Label name 100 Wireless charging station 130 First magnet 162 Glue injection port 110 case 140 Second magnet 170 Glue storage space 111 Adsorption surface 150 circuit board 200 electric toothbrush 112 Rotation positioning unit 160 counterweight 210 Magnetic parts 120 Transmitting coil 161 Embedded slot 220 Charging coil

[0039] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0041] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that meet both A and B.

[0043] The utility model provides a wireless charging stand for wirelessly charging personal care appliances.

[0044] In the embodiment of this utility model, please refer to Figure 9 and Figure 10, a magnetic part 210 and a charging coil 220 are provided at the bottom of the personal care appliance. The personal care appliance can be an electric toothbrush 200, an electric shaver, an oral irrigator, an electric nose hair trimmer, or other equipment used for personal care box cleaning. After alternating current is passed through the transmitting coil 120 of the charging stand, an alternating magnetic field can be generated, which will induce current in the charging coil 220 provided at the bottom of the personal care appliance, thereby realizing wireless charging of the personal care appliance. It should be noted that the bottom of the personal care appliance here does not specifically refer to the bottom of the personal care appliance when in use, but refers to the bottom of the personal care appliance that is in contact with the charging stand when the personal care appliance is placed on the charging stand for charging. The shape and quantity of the magnetic part 210 provided at the bottom of the personal care appliance can be selected and designed according to the type of personal care appliance and its bottom space, and are not specifically limited here. It is understandable that in order to improve the charging and magnetic attraction effects, the relative positions of the magnetic part 210 and the charging coil 220 of the personal care appliance at its bottom are consistent with the relative positions of the first magnet 130 and the transmitting coil 120 in the wireless charging stand 100.

[0045] Please refer to Figures 1 to 3 、 Figure 5 、 Figure 6 The wireless charging stand 100 includes a shell 110, a transmitting coil 120 installed in the shell 110, a first magnet 130 and a second magnet 140; the shell 110 has an adsorption surface 111 for contacting with the bottom surface of the personal care appliance; the first magnet 130 and the second magnet 140 are arranged along the circumference of the charging coil 220, and the magnetic pole of the first magnet 130 facing the adsorption surface 111 is different from the magnetic pole of the second magnet 140 facing the adsorption surface 111; the first magnet 130 is used to magnetically attract the magnetic part 210, and the second magnet 140 is used to magnetically repel the magnetic part 210, and can drive the personal care appliance to rotate until the magnetic part 210 and the first magnet 130 are aligned and magnetically matched, and the charging coil 220 is aligned and matched with the transmitting coil 120.

[0046] In this embodiment, the housing 110 can have many shapes. For example, the cross-section of the housing 110 can be circular, rectangular, rounded rectangular, elliptical, heart-shaped, waist-shaped, or a special shape. The shape can be selected and designed according to actual needs, and there is no specific limitation on the shape of the housing 110. Generally, the top wall of the housing 110 forms an adsorption surface 111 to fit the bottom surface of the personal care appliance.

[0047] The first magnet 130 and the second magnet 140 are specifically permanent magnets. There can be only one first magnet 130 and the second magnet 140, in which case the first magnet 130 and the second magnet 140 can be arc-shaped magnetic strips extending circumferentially along the charging coil 220. Alternatively, there can be multiple first magnets 130 and the second magnet 140, in which case the multiple first magnets 130 and the multiple second magnets 140 are sequentially arranged circumferentially around the charging coil 220. In this case, the first magnet 130 and the second magnet 140 can be in the form of arc-shaped strips, rectangular strips, or blocks. It is understood that to prevent mutual interference between the first magnet 130 and the second magnet 140, the first magnet 130 and the second magnet 140 are spaced apart. The spacing between the first magnet 130 and the second magnet 140 can be designed based on the magnetic force of the first magnet 130 and the second magnet 140 and is not specifically limited here.

[0048] It should be noted that the first magnet 130 and the second magnet 140 are arranged along the circumference of the charging coil 220. The first magnet 130 and the second magnet 140 can be arranged around the outer circumference of the charging coil 220 or around the inner circumference of the charging coil 220. The magnetic pole of the first magnet 130 facing the adsorption surface 111 and the magnetic pole of the second magnet 140 facing the adsorption surface 111 are different. The first magnet 130 is magnetically attracted to the magnetic component 210 in the personal care appliance, while the second magnet 140 is magnetically repelled from the magnetic component 210. That is, when the magnetic pole of the first magnet 130 facing the adsorption surface 111 is N, the magnetic pole of the second magnet 140 facing the adsorption surface 111 is S, and the magnetic pole of the magnetic component 210 facing the adsorption surface 111 is S. Alternatively, when the magnetic pole of the first magnet 130 facing the adsorption surface 111 is S, the magnetic pole of the second magnet 140 facing the adsorption surface 111 is N, and the magnetic pole of the magnetic member 210 facing the adsorption surface 111 is N.

[0049] The second magnet 140 and the magnetic member 210 magnetically repel each other and can drive the personal care appliance to rotate. The magnetic repulsion between the second magnet 140 and the magnetic member 210 is greater than the weight of the personal care appliance. The first magnet 130 and the second magnet 140 are spaced apart circumferentially around the charging coil 220. The second magnet 140 and the magnetic member 210 magnetically repel each other, while the first magnet 130 and the magnetic member 210 magnetically attract each other. When the second magnet 140 and the magnetic member 210 of the personal care appliance repel each other, the magnetic attraction between the first magnet 130 and the magnetic member 210 provides traction for the rotation of the personal care appliance, thereby driving the personal care appliance to rotate until the magnetic member 210 is aligned with the first magnet 130 and misaligned with the second magnet 140. In this case, if no limiting structure is provided, the repulsive force between the second magnet 140 and the magnetic member 210 may also drive the personal care appliance to translate.

[0050] In the present invention, a first magnet 130 and a second magnet 140 are arranged in the wireless charging stand 100 in a circumferential direction surrounding the charging coil 220, and the magnetic attraction of the first magnet 130 and the second magnet 140 toward the adsorption surface 111 is different. The first magnet 130 is magnetically attracted to the magnetic part 210 in the personal care appliance, and the second magnet 140 is used to magnetically repel the magnetic part 210 in the personal care appliance, and can drive the personal care appliance to rotate until the magnetic part 210 is aligned with the first magnet 130. In this way, when the user places the personal care appliance on the charging base at an incorrect angle, that is, there is an angle difference between the first magnet 130 and the magnetic part 210 in the personal care appliance, the second magnet 140 can rotate the personal care appliance to a certain angle through the repulsive force with the magnetic part 210, and then the charging coil 220 and the transmitting coil 120 can be aligned through the alignment and magnetic attraction of the first magnet 130 and the magnetic part 210. In this way, the personal care appliance can automatically correct the charging position on the charging base, so that the transmitting coil 120 in the charging base is automatically aligned with the charging coil 220 of the personal care appliance, thereby improving the wireless charging efficiency.

[0051] In order to improve the placement accuracy of the personal care appliance on the charging station, a position mark or pattern can be set on the adsorption surface 111, or a rotation positioning part 112 can be set on the adsorption surface 111. In this way, the coil alignment rate of the personal care appliance and the charging station can be improved.

[0052] In one embodiment, if Figure 1 、 Figure 2 、 Figure 6 、 Figures 8 to 10 As shown, the adsorption surface 111 is provided with a rotation positioning portion 112 for rotatably cooperating with the bottom of the personal care appliance.

[0053] In this embodiment, the rotational positioning portion 112 can be a protrusion provided on the adsorption surface 111, and the bottom wall of the personal care appliance is provided with a groove that matches the protrusion. The protrusion can be a central protrusion or a raised ring. Of course, the rotational positioning portion 112 can also be a groove structure, allowing the bottom of the personal care appliance to be directly embedded in the groove, or a protrusion that matches the groove can be provided on the bottom wall of the personal care appliance.

[0054] It is understood that when the user places the personal care appliance, they first use the rotating positioning portion 112 to align the charging coil 220 of the personal care appliance with the transmitting coil 120 of the charging base in the normal direction of the adsorption surface 111. However, if the first magnet 130 is not aligned with the magnetic component 210 in the personal care appliance, a torsional angle difference between the transmitting coil 120 and the charging coil 220 will still exist.

[0055] By providing the adsorption surface 111 with a rotating positioning portion 112, the bottom of the personal care appliance can be rotatably matched with the rotating positioning portion 112. On the one hand, the personal care appliance is pre-positioned by the rotating positioning portion 112 to improve the user's placement accuracy. On the other hand, the rotating positioning portion 112 limits the translation of the personal care appliance along the extension direction of the adsorption surface 111, so that the repulsive force of the second magnet 140 can only push the personal care appliance to rotate, but cannot push the personal care appliance to translate, thereby improving the automatic guidance effect of the wireless charging base on the personal care appliance.

[0056] Furthermore, the rotation positioning portion 112 includes a central convex portion provided on the adsorption surface 111 , the central convex portion is provided corresponding to the transmitting coil 120 , and the first magnet 130 and the second magnet 140 surround the outer circumference of the transmitting coil 120 .

[0057] In this embodiment, the rotational positioning portion 112 comprises a central protrusion on the suction surface 111 rather than a groove. This reduces the overall size of the wireless charging stand 100 and eliminates the need for a rim around the suction surface 111 to enclose the perimeter of the personal care appliance, thereby maintaining a simple appearance. Specifically, a positioning groove is provided on the bottom of the personal care appliance, which mates with the central protrusion. The central protrusion is positioned so as to correspond to the transmitting coil 120. Thus, when the bottom of the personal care appliance is fitted with the central protrusion, the charging coil 220 of the personal care appliance can be aligned with the transmitting coil 120 in the normal direction of the suction surface 111, thereby improving coil alignment reliability. It can be appreciated that by providing the first and second magnets 130, 140 within the wireless charging stand 100, wireless charging efficiency is ensured, allowing the transmitting coil 120 to be smaller, resulting in a smaller overall size for the wireless charging stand 100, making it more portable and compact. By surrounding the first magnet 130 and the second magnet 140 around the outer circumference of the transmitting coil 120, the first magnet 130 and the second magnet 140 have a larger installation space. A larger first magnet 130 and second magnet 140 can be selected and designed according to magnetic force requirements, thereby ensuring the automatic self-alignment effect of the wireless charging stand 100.

[0058] In one embodiment, please refer to Figure 3 and Figure 5 There are multiple first magnets 130 and multiple second magnets 140 , one first magnet 130 is provided between two adjacent second magnets 140 , and one second magnet 140 is provided between two adjacent first magnets 130 .

[0059] In this embodiment, a plurality of first magnets 130 and second magnets 140 are alternately arranged. When the second magnets 140 and the magnetic part 210 of the personal care appliance repel each other, the first magnets 130 adjacent to the second magnets 140 can magnetically attract the magnetic part 210, providing sufficient power for the rotation of the personal care appliance. In this way, the automatic guidance effect of the wireless charging stand 100 on the personal care appliance is better.

[0060] Furthermore, two of the first magnets 130 and two of the second magnets 140 are provided. The two first magnets 130 are provided on two opposite sides of the transmitting coil 120 , and the two second magnets 140 are provided on the other two opposite sides of the transmitting coil 120 .

[0061] In this embodiment, the shape of the first magnet 130 and the second magnet 140 can be a rectangular bar or an arcuate bar. The shapes of the first magnet 130 and the second magnet 140 can be the same or different. Optionally, the first magnet 130 is in the shape of an arcuate bar, and the second magnet 140 is in the shape of a rectangular bar. When the personal care appliance is an electric toothbrush 200, due to the limited bottom space, the magnetic part 210 at the bottom of the electric toothbrush 200 is two opposing arcuate magnets. Therefore, the first magnet 130 is designed to be an arcuate bar, which is the same shape as the magnetic part 210 at the bottom of the electric toothbrush 200, so that the magnetic attraction of the two can be improved.

[0062] Due to the limited space at the bottom of the personal care appliance, if the number of both the first magnet 130 and the second magnet 140 exceeds two, the requirements for the spacing between the first magnet 130 and the second magnet 140 and the volume of a single magnet cannot be met simultaneously. If only one of the first magnet 130 and the second magnet 140 is designed, then in order to ensure sufficient magnetic force, the first magnet 130 and the second magnet 140 need to be designed in a semicircular arc shape. In this way, the magnetic part 210 of the personal care appliance also needs to be designed in a semicircular arc shape corresponding to the first magnet 130. However, due to the limited space at the bottom of the personal care appliance, the design is more difficult. By providing two of each of the first magnet 130 and the second magnet 140, and with the two first magnets 130 and the two second magnets 140 facing each other, the requirements for magnetic spacing can be met while ensuring sufficient magnetic force, and the magnetic part 210 can be more easily adapted to the spatial layout within the personal care appliance.

[0063] In one embodiment, if Figure 3 、 Figure 6 、 Figure 9 and Figure 10As shown, the first magnet 130 , the second magnet 140 and the transmitting coil 120 are all fixed to the inner wall surface of the shell 110 opposite to the adsorption surface 111 , so that the first magnet 130 , the second magnet 140 and the transmitting coil 120 are close to the adsorption surface 111 .

[0064] In this embodiment, the first magnet 130, the second magnet 140, and the transmitting coil 120 can be fixed to the inner wall surface of the housing 110 opposite the adsorption surface 111 by bonding, embedding, pressing, etc. In this way, the first magnet 130, the second magnet 140, and the transmitting coil 120 can be placed in close proximity to the adsorption surface 111, thereby reducing the magnetic field shielding effect of the housing 110 on the first magnet 130 and the second magnet 140, and ensuring sufficient magnetic force between the first magnet 130, the second magnet 140, and the magnetic component 210 of the personal care appliance.

[0065] In one embodiment, please refer to Figure 5 、 Figure 6 、 Figure 9 and Figure 10 The wireless charging stand 100 further includes a circuit board 150 electrically connected to the transmitting coil 120 . The circuit board 150 is installed in the housing 110 . The transmitting coil 120 and the circuit board 150 are staggered in the extension direction of the adsorption surface 111 .

[0066] In this embodiment, the circuit board 150 is used to control the electromagnetic induction generated by the transmitting coil 120 and transmit energy to the charging coil 220 within the personal care appliance. Since the transmitting coil 120 generates significant heat during operation, and the circuit board 150 may also heat up, by staggering the transmitting coil 120 and the circuit board 150 in the direction of extension of the adsorption surface 111, rather than positioning them vertically opposite each other, heat concentration between the two components during operation can be effectively avoided, thereby reducing heat within the wireless charging station 100 and preventing heating of the transmitting coil 120 from affecting the operation of the circuit board 150.

[0067] Further, if Figure 2 、 Figures 4 to 6 As shown, the wireless charging stand 100 also includes a counterweight 160 installed in the shell 110. The counterweight 160 has an embedding groove 161 on the wall surface facing the adsorption surface 111. The circuit board 150, the transmitting coil 120, the first magnet 130 and the second magnet 140 are all arranged in the embedding groove 161.

[0068] In this embodiment, the wireless charging stand 100 is counterweighted by providing a counterweight 160. This prevents the wireless charging stand 100 from moving when the user picks up a personal care appliance from the wireless charging stand 100. This prevents the wireless charging stand 100 from falling to the floor or injuring the user's feet when the personal care appliance is picked up, thereby improving product safety and user experience. The circuit board 150 can be overlapped or bonded within the embedding groove 161, or it can be fixed to the inner wall of the housing 110 using plug-in posts, screws, etc. When the circuit board 150, the transmitting coil 120, the first magnet 130, and the second magnet 140 are all located within the embedding groove 161, the portion of the counterweight 160 not provided with the embedding groove 161 can fit more closely to the top wall of the housing 110, making the entire structure within the housing 110 more compact and further facilitating the miniaturization of the wireless charging stand 100. The counterweight block 160 is usually made of metal materials such as iron and alloy. By placing the circuit board 150 in the embedding groove 161, the counterweight block 160 can wrap the circuit board 150, shielding external electromagnetic signals, making the circuit board 150 have better anti-interference ability and avoiding noise and abnormal sound.

[0069] For further information, please refer to Figure 6 and Figure 10 The embedding groove 161 and the housing 110 enclose a glue-containing space 170, which is filled with sealant to seal and secure the transmitting coil 120, the first magnet 130, the second magnet 140, and the circuit board 150. By filling the embedding groove 161 with sealant, the transmitting coil 120, the first magnet 130, the second magnet 140, the circuit board 150, the counterweight 160, and the housing 110 are securely sealed with the sealant. This ensures the secure connection of each component while improving the sealing of the electronic components within the entire wireless charging stand 100, thereby enhancing the waterproof performance of the wireless charging stand 100.

[0070] Further, if Figure 2 、 Figures 4 to 6 、 Figure 9 and Figure 10 As shown, the bottom wall of the embedding groove 161 is provided with a glue injection port 162 that passes through the counterweight block 160, and the glue injection port 162 and the circuit board 150 are arranged on opposite sides of the center line of the transmitting coil 120; and / or the shape of the embedding groove 161 is symmetrical about the center line of the transmitting coil 120.

[0071] In this embodiment, specifically, the shell 110 is cylindrical in shape, with the adsorption surface 111 provided on one end wall of the shell 110 and an opening at the other end. The wireless charging station 100 also includes a bottom plate that covers the opening. During assembly, the transmitting coil 120, the first magnet 130, and the second magnet 140 are first fixed to the inner wall surface of the shell 110 opposite the adsorption surface 111. The counterweight 160 is then installed into the shell 110, and the transmitting coil 120, the first magnet 130, and the second magnet 140 are aligned and embedded in the embedding groove 161. Glue is then injected into the glue holding space 170 through the glue injection port 162 on one side of the opening of the shell 110 to achieve a solid seal within the entire glue holding space 170. Finally, the cover plate is closed over the opening to complete the assembly of the entire wireless charging station 100. Since the circuit board 150 and the transmitting coil 120 are laterally offset, the embedding groove 161 is laterally biased to one side. By arranging the glue injection port 162 and the circuit board 150 on opposite sides of the center line of the transmitting coil 120, the glue injection port 162 can reduce the weight of the side of the counterweight 160 where the embedding groove 161 is not provided, thereby ensuring the balance of the center of gravity of the entire wireless charging stand 100.

[0072] The shape of the embedding groove 161 is symmetrical about the center line of the transmitting coil 120, which can further balance the center of gravity of the counterweight 160, so that the center of gravity of the entire wireless charging stand 100 will not deviate from the center of its structure, thereby improving the customer experience.

[0073] In one embodiment, please refer to Figure 5 、 Figure 6 、 Figure 9 and Figure 10 The wireless charging stand 100 further includes a counterweight 160 and a circuit board 150 installed in the shell 110 . The counterweight 160 is made of metal and has an embedding groove 161 formed on it. The circuit board 150 is disposed in the embedding groove 161 .

[0074] In this embodiment, by providing a counterweight 160, the wireless charging stand 100 can be counterweighted to prevent the user from moving the wireless charging stand 100 when picking up personal care appliances from the wireless charging stand 100. This can prevent the wireless charging stand 100 from falling to the floor or injuring the user's feet when picking up personal care appliances, thereby improving product safety and user experience. The counterweight 160 can be made of a metal material such as iron or alloy. By placing the circuit board 150 in the embedding groove 161, the metal counterweight 160 can wrap the circuit board 150, effectively shielding external electromagnetic signals, giving the circuit board 150 better anti-interference capabilities and avoiding noise and abnormal sounds.

[0075] The utility model also provides a toothbrush kit, such as Figures 7 to 10As shown, the toothbrush kit includes an electric toothbrush 200 and a wireless charging stand 100. The specific structure of the wireless charging stand 100 refers to the above embodiment. The bottom of the electric toothbrush 200 is provided with a magnetic member 210 and a charging coil 220. The bottom surface of the electric toothbrush 200 is in contact with the adsorption surface 111 of the wireless charging stand 100, and the charging coil 220 corresponds to the transmitting coil 120 of the wireless charging stand 100; the magnetic member 210 is aligned and adsorbed with the first magnet 130 of the wireless charging stand 100; the second magnet 140 of the wireless charging stand 100 magnetically repels the magnetic member 210, and the magnetic repulsion between the second magnet 140 and the magnetic member 210 is greater than the gravity of the electric toothbrush 200, so as to drive the electric toothbrush 200 to rotate until the magnetic member 210 is aligned and magnetically engaged with the first magnet 130 and offset from the second magnet 140, and the charging coil 220 is aligned and engaged with the transmitting coil 120.

[0076] It is understood that the magnetic member 210 disposed at the bottom of the electric toothbrush 200 is non-annular. When the magnetic member 210 and the first magnet 130 are aligned and magnetically engaged, the magnetic member 210 and the second magnet 140 are offset in the normal direction of the adsorption surface 111. This prevents the second magnet 140 from interfering with the magnetic adsorption between the first magnet 130 and the magnetic member 210. Because this toothbrush kit adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0077] Furthermore, the shape and size of the magnetic member 210 are consistent with those of the first magnet 130. And when there are multiple first magnets 130, the number of the magnetic members 210 is also the same as the number of the first magnets 130. The shape and size of the magnetic member 210 and the first magnet 130 are consistent, and they can be exactly the same or have slight differences. By making the shape and size of the magnetic member 210 consistent with that of the first magnet 130, on the one hand, the magnetic attraction effect can be guaranteed, and on the other hand, it is easier for the second magnet 140 to drive the electric toothbrush 200 to rotate until the magnetic member 210 and the second magnet 140 are misaligned, thereby ensuring the automatic guidance effect of the electric toothbrush 200 on the wireless charging stand 100.

[0078] In one embodiment, the ratio of the magnetic repulsion between the second magnet 140 and the magnetic member 210 to the gravity of the electric toothbrush 200 is greater than 1.1, and / or the ratio of the magnetic attraction between the first magnet 130 and the magnetic member 210 to the gravity of the electric toothbrush 200 is greater than 0.8.

[0079] In this embodiment, if the ratio of the magnetic repulsion between the second magnet 140 and the magnetic member 210 to the weight of the electric toothbrush 200 is less than 1.1, the magnetic repulsion between the second magnet 140 and the magnetic member 210 is small, making it difficult to drive the electric toothbrush 200 to rotate until the magnetic member 210 is aligned with the first magnet 130. However, by increasing the ratio of the magnetic repulsion between the second magnet 140 and the magnetic member 210 to the weight of the electric toothbrush 200 to greater than 1.1, sufficient magnetic repulsion can be ensured, and this magnetic repulsion can be used to drive the electric toothbrush 200 to rotate a sufficient angle to ensure that the electric toothbrush 200 can be automatically guided to align the charging coil 220 with the transmitting coil 120 of the wireless charging station 100.

[0080] If the ratio of the magnetic attraction between the first magnet 130 and the magnetic member 210 to the weight of the electric toothbrush 200 is less than 0.8, the magnetic attraction between the first magnet 130 and the magnetic member 210 is insufficient, making the electric toothbrush 200 easily fall off the wireless charging stand 100. Furthermore, the magnetic attraction between the first magnet 130 and the magnetic member 210 cannot provide sufficient traction for the rotation of the electric toothbrush 200. However, by increasing the ratio of the magnetic attraction between the first magnet 130 and the magnetic member 210 to the weight of the electric toothbrush 200 to greater than 0.8, the electric toothbrush 200 is reliably magnetically attracted to the wireless charging stand 100 while providing sufficient power for the rotation of the personal care appliance, further improving the reliability and accuracy of the automatic guidance of the electric toothbrush 200 by the wireless charging stand 100.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A wireless charging stand for wirelessly charging a personal care appliance, wherein a magnetic member and a charging coil are provided at the bottom of the personal care appliance, characterized in that: The wireless charging stand includes a shell, a transmitting coil installed in the shell, a first magnet and a second magnet; wherein, The housing has an adsorption surface for contacting with the bottom surface of the personal care appliance; The first magnet and the second magnet are arranged along the circumference of the charging coil, and the magnetic pole of the first magnet facing the adsorption surface is different from the magnetic pole of the second magnet facing the adsorption surface; The first magnet is used to magnetically attract the magnetic part, and the second magnet is used to magnetically repel the magnetic part, and can drive the personal care appliance to rotate until the magnetic part and the first magnet are aligned and magnetically matched, and the charging coil and the transmitting coil are aligned and matched.

2. The wireless charging stand according to claim 1, wherein: The adsorption surface is provided with a rotation positioning portion for rotatably cooperating with the bottom of the personal care appliance.

3. The wireless charging stand according to claim 2, wherein: The rotation positioning portion includes a central convex portion provided on the adsorption surface, the central convex portion is provided corresponding to the transmitting coil, and the first magnet and the second magnet surround the outer circumference of the transmitting coil.

4. The wireless charging stand according to claim 1, wherein: There are a plurality of the first magnets and a plurality of the second magnets. A first magnet is disposed between two adjacent second magnets, and a second magnet is disposed between two adjacent first magnets.

5. The wireless charging stand according to claim 4, wherein: There are two of each of the first magnet and the second magnet. The two first magnets are arranged on two opposite sides of the transmitting coil, and the two second magnets are arranged on the other two opposite sides of the transmitting coil.

6. The wireless charging stand according to any one of claims 1 to 5, wherein: The first magnet, the second magnet and the transmitting coil are all fixed to the inner wall surface of the shell opposite to the adsorption surface, so that the first magnet, the second magnet and the transmitting coil are close to the adsorption surface.

7. The wireless charging stand according to claim 6, wherein: The wireless charging stand further includes a circuit board electrically connected to the transmitting coil, the circuit board is installed in the shell, and the transmitting coil and the circuit board are staggered in the extension direction of the adsorption surface.

8. The wireless charging stand according to claim 7, wherein: The wireless charging stand also includes a counterweight installed in the shell, and an embedding groove is opened on the wall of the counterweight facing the adsorption surface. The circuit board, the transmitting coil, the first magnet and the second magnet are all arranged in the embedding groove.

9. The wireless charging stand according to claim 8, wherein: The embedding groove and the shell enclose a glue-containing space, and the glue-containing space is filled with sealant to seal and fix the transmitting coil, the first magnet, the second magnet and the circuit board.

10. The wireless charging stand according to claim 9, wherein: The bottom wall of the embedding groove is provided with a glue injection port that passes through the counterweight block, and the glue injection port and the circuit board are arranged on opposite sides of the center line of the transmitting coil; and / or the shape of the embedding groove is symmetrical about the center line of the transmitting coil.

11. The wireless charging stand according to claim 6, wherein: The wireless charging stand further comprises a counterweight block and a circuit board installed in the shell. The counterweight block is made of metal and has an embedding groove formed on it. The circuit board is arranged in the embedding groove.

12. A toothbrush kit, characterized in that: The invention comprises an electric toothbrush and a wireless charging stand according to any one of claims 1 to 11, wherein a magnetic member and a charging coil are provided at the bottom of the electric toothbrush, the bottom surface of the electric toothbrush is in contact with the adsorption surface of the wireless charging stand, and the charging coil corresponds to the transmitting coil of the wireless charging stand; The magnetic member is aligned and adsorbed with the first magnet of the wireless charging stand; The second magnet of the wireless charging stand magnetically repels the magnetic part, and the magnetic repulsion between the second magnet and the magnetic part is greater than the gravity of the electric toothbrush, so as to drive the electric toothbrush to rotate until the magnetic part and the first magnet are aligned and magnetically engaged, and the charging coil and the transmitting coil are aligned and engaged.

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