Electric toothbrush, charging equipment and electric toothbrush assembly

Abstract

The embodiment of the utility model discloses an electric toothbrush, charging equipment and an electric toothbrush assembly, the electric toothbrush comprises a handle, the handle comprises a handle barrel, a circuit board and a charging assembly, and the handle barrel is provided with an outer side face surrounding the length direction of the electric toothbrush. The circuit board is located in the handle cylinder. The charging assembly is fixed relative to the handle cylinder and comprises a charging contact used for being in conductive contact with charging equipment outside the electric toothbrush, and the charging contact is electrically connected with the circuit board and exposed on the outer side face of the handle cylinder. The charging contact is exposed on the outer side surface of the handle cylinder, so that compared with the prior art that a charging structure is arranged on the bottom surface of the handle cylinder, and when the electric toothbrush is vertically placed, liquid flows to the bottom surface and is accumulated, so that the problems of charging structure corrosion, poor contact, even short circuit and the like are easily caused, water accumulation at the charging assembly is avoided; and the service life of the charging assembly is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of oral cleaning equipment, and in particular to an electric toothbrush, a charging device and an electric toothbrush assembly. Background Art

[0002] In the related art, the charging structure of an electric toothbrush is usually set on the bottom of the electric toothbrush, and the electric toothbrush is usually placed upright. The liquid after use flows to the bottom and accumulates, which will cause the bottom to mold over time. Moreover, the charging structure is kept in a humid state for a long time, which will cause the electrical connection structure to corrode, resulting in poor contact or even short circuit problems. Utility Model Content

[0003] The embodiments of the present application provide an electric toothbrush, a charging device and an electric toothbrush assembly, which are used to improve the problem that the charging structure of the electric toothbrush in the related art is usually arranged on the bottom surface of the electric toothbrush, which may cause corrosion of the electrical connection structure, poor contact or even short circuit.

[0004] In a first aspect, an embodiment of the present application provides an electric toothbrush, the electric toothbrush comprising a handle, the handle comprising a handle barrel, a circuit board and a charging assembly, the handle barrel having an outer side surface surrounding the length direction of the electric toothbrush. The circuit board is located in the handle barrel. The charging assembly is fixed relative to the handle barrel, and the charging assembly comprises a charging contact for conductive contact with a charging device outside the electric toothbrush, the charging contact is electrically connected to the circuit board, and the charging contact is exposed on the outer side surface of the handle barrel.

[0005] Compared with the related art in which the charging structure is arranged on the bottom surface of the handle tube, when the electric toothbrush is placed upright, the liquid flows to the bottom surface and accumulates, which can easily cause corrosion of the charging structure, poor contact or even short circuit. The electric toothbrush in the embodiment of the present application exposes the charging contacts on the outer side of the handle tube, which can avoid water accumulation in the charging component, prevent the exposed charging contacts from being in a wet state for a long time, and extend the service life of the charging component.

[0006] In some of the embodiments, the charging assembly includes an insulating mounting member and a plurality of charging contacts, wherein the plurality of charging contacts are mounted on the insulating mounting member at intervals from each other, and the insulating mounting member is mounted on the handle tube.

[0007] Based on the above embodiment, multiple charging contacts are installed on the insulating mounting member at intervals, so that insulation between the multiple charging contacts can be achieved. Compared with directly installing the charging contacts on the handle barrel, the material requirements for the handle barrel can be reduced. When assembling the electric toothbrush, the charging contacts can be installed on the insulating mounting member and then assembled with the handle barrel. Compared with directly assembling the charging contacts with the handle barrel, the assembly operation is more convenient.

[0008] In some of the embodiments, the insulating mounting member is provided with a first alignment portion, the first alignment portion is exposed on the outer side of the handle tube, and the first alignment portion is used for alignment with an external charging device.

[0009] Based on the above embodiments, the provision of the first alignment portion can improve the alignment efficiency and alignment accuracy between the electric toothbrush and the charging device.

[0010] In some embodiments, the first alignment portion is located between two adjacent charging contacts.

[0011] In some embodiments, a portion of the protrusion or depression of the insulating mounting member forms the first alignment portion.

[0012] Based on the above embodiment, if the first alignment portion is formed by a partial depression of the insulating mounting member, the first alignment portion can contain liquid, effectively preventing the occurrence of short circuit problems between electrical contacts caused by liquid. If the first alignment portion is formed by a partial protrusion of the insulating mounting member, the second alignment portion corresponding to the first alignment portion formed on the charging device is roughly concave, and can contain liquid, effectively preventing the occurrence of short circuit problems between electrical contacts caused by liquid.

[0013] In some embodiments, the insulating mounting member and the handle tube are integrally formed.

[0014] Based on the above embodiments, the handle tube can maintain a seamless structure, improve waterproofness, and effectively prevent dirt and grime from accumulating in gaps.

[0015] In some of the embodiments, the handle tube is formed with a mounting hole, and the insulating mounting member is embedded in the mounting hole.

[0016] Based on the above embodiments, the setting of the mounting hole can locate the setting position of the insulating mounting component on the handle tube, which is beneficial to improving the assembly efficiency between the two.

[0017] In some embodiments, the handle tube includes a shell having an outer side, and the shell is a metal part.

[0018] In some of the embodiments, the handle tube further includes an inner lining, which is injection-moldedly connected to the inner side of the outer shell and is a plastic part; the electric toothbrush further includes a bracket, the circuit board is mounted on the bracket, and the bracket is connected to the inner lining.

[0019] Based on the above embodiments, since plastic parts are easier to process than metal parts and can be easily formed into a structure for connecting with the movement, an inner lining is provided on the inner side of the outer shell of the metal part to facilitate the installation of the movement in the handle tube.

[0020] In some embodiments, a first mounting hole is formed on the outer side of the shell, and a second mounting hole is formed on the lining that is connected to the first mounting hole. When observed along the first mounting hole on the outer side, the lining has a limiting surface located in the first mounting hole and surrounding the second mounting hole, and at least a portion of the insulating mounting member is located in the first mounting hole and in contact with the limiting surface of the lining.

[0021] Based on the above embodiment, by providing a limiting surface on the lining, the connectivity between the insulating mounting component and the handle tube can be improved.

[0022] In some of the embodiments, the handle further includes a first magnetic component, which is fixed relative to the handle tube and is used to form a magnetic connection with an external charging device.

[0023] Based on the above embodiment, the first magnetic attraction member is used to form a magnetic connection with an external charging device, thereby achieving a reliable electrical connection between the electrical contacts on the electric toothbrush and the charging device.

[0024] In some embodiments, the handle tube includes an outer shell and an inner lining, the outer shell has an outer side, and the inner lining is injection-moldedly connected to the inner side of the outer shell, wherein the outer shell is a non-magnetic metal part, the inner lining is a plastic part, and the first magnetic attraction part is connected to the inner lining.

[0025] Based on the above embodiment, the housing is made of a non-magnetic metal component to avoid interference with the first magnetic attraction component.

[0026] In some of the embodiments, along the length direction of the electric toothbrush, the first magnetic element is located above the charging contact.

[0027] Based on the above embodiments, it can be ensured that there is enough space on the electric toothbrush to arrange the first magnetic attraction component, and the first magnetic attraction component can be made larger to ensure the magnetic attraction force.

[0028] In some of the embodiments, the electric toothbrush further comprises a motor, which is located in the handle tube and spaced apart from the first magnetic attraction component along the length direction of the electric toothbrush.

[0029] Based on the above embodiment, the motor includes a coil and a magnet. The motor and the first magnetic component are spaced apart along the length direction of the electric toothbrush. This can reduce or even avoid the magnetic field of the first magnetic component interfering with the operation of the motor, and avoid the first magnetic component causing problems such as a decrease in the output power of the motor, an increase in noise, and an increase in temperature.

[0030] In some embodiments, at least a portion of the first magnetic element is embedded in the inner wall of the handle tube.

[0031] Based on the above embodiment, the distance between the first magnetic attraction component and the outer side surface of the handle tube can be made closer, thereby improving the magnetic attraction effect.

[0032] In some of the embodiments, the circuit board is the mainboard of the electric toothbrush, and the charging assembly also includes a conductive member, and the charging contacts are electrically connected to the circuit board through the conductive member.

[0033] Based on the above embodiment, the charging component is designed to be directly electrically connected to the main board of the electric toothbrush. Compared with the related art in which the charging component is electrically connected to a small charging board outside the main board, the setting of the small charging board can be omitted and the small charging board can be directly integrated on the main board.

[0034] In some of the embodiments, the electric toothbrush further includes an interactive component, which is disposed on the outer side of the handle tube. The interactive component includes a button or a display component, and the interactive component and the charging contact are located on the same side of the outer side.

[0035] Based on the above embodiment, the side where the interactive part is set is usually the front side of the electric toothbrush. In this way, the electrical contacts will be exposed on the front side of the outer side of the handle tube, corresponding to the front side of the circuit board, which can shorten the conductive part that electrically connects the charging component to the circuit board.

[0036] In some of the embodiments, the conductive member is disposed on the circuit board and is elastic, the charging contacts are exposed on the inner wall of the handle tube, and the conductive member forms a contact-type electrical connection with the charging contacts.

[0037] Based on the above embodiment, after the movement is installed in place in the handle tube, the conductive member on the circuit board can directly contact the electrical contacts to conduct electricity without wiring, welding, etc. The above-mentioned conductive member is designed to be elastic, so the conductive member can be deformed under the push of the movement when the movement is installed in the handle tube, so that the movement can be smoothly installed in the handle tube, and after the movement is installed in place, the conductive member can gradually recover and form a contact-type electrical connection with the electrical contacts (such as charging contacts, data contacts).

[0038] In some of the embodiments, the conductive member is disposed on a side of the circuit board facing the charging contact.

[0039] Based on the above embodiments, the conductive member electrically connecting the charging component to the circuit board can be shortened, and the conductive member is facilitated to form a contact-type electrical connection with electrical contacts (eg, charging contacts, data contacts).

[0040] In some embodiments, the electric toothbrush further comprises a motor and an interactive component, wherein the motor is located in the handle tube and is fixed relative to the handle tube. The interactive component is fixed relative to the handle tube, the interactive component is electrically connected to the circuit board, and the output shaft of the motor is farther away from the interactive component than the central axis of the handle tube.

[0041] Based on the above embodiment, the central axis of the handle tube roughly corresponds to the central axis of the handle, and the output shaft of the motor is farther away from the interactive part than the central axis of the handle tube. This allows the center of gravity of the electric toothbrush to be farther away from the interactive part when the electric toothbrush is lying down. The electric toothbrush tends to roll toward the bottom, so that the front of the lying electric toothbrush faces upward, and then the electrical contacts (such as charging contacts and data contacts) face upward, reducing the risk of water accumulation at the electrical contacts.

[0042] In a second aspect, an embodiment of the present application provides a charging device for an electric toothbrush, the charging device comprising a device housing, a power supply assembly and a power supply assembly, the surface of the device housing is formed with a receiving groove, the receiving groove has a groove surface for matching with the outer side surface of the handle of the electric toothbrush. The power supply assembly is located in the device housing. The power supply assembly comprises a power supply contact, the power supply contact is electrically connected to the power supply assembly, at least part of the power supply contact is exposed on the groove surface of the receiving groove, and the power supply contact is used to make conductive contact with the charging contact exposed on the outer side surface of the handle.

[0043] The charging device of the embodiment of the present application is provided with a receiving groove on the charging device, and the receiving groove is provided to accommodate at least part of the electric toothbrush, so that the two can remain relatively stable during the process of charging the electric toothbrush by the charging device, and the charging can proceed smoothly. At least part of the power supply contacts of the charging device are exposed on the groove surface, and since the groove surface cooperates with the outer side surface of the handle, it is convenient for the charging contacts on the electric toothbrush to correspond to the power supply contacts on the charging device when the electric toothbrush is placed in the receiving groove.

[0044] In some embodiments, the accommodating groove extends along the length direction of the electric toothbrush, and a first opening connected to the accommodating groove is also formed on the surface of the device housing. The first opening is connected to the accommodating groove in a direction perpendicular to the length direction of the electric toothbrush, and the first opening extends along the length direction of the electric toothbrush.

[0045] Based on the above embodiment, the setting of the first opening facilitates the electric toothbrush to be taken in and placed in the accommodating groove from the side of the charging device, and since the opening space of the first opening is large, it is convenient to take in and place.

[0046] In some of the embodiments, a second opening communicating with the accommodating groove is further formed on the surface of the device housing, and the second opening is communicated with the accommodating groove along the length direction of the electric toothbrush.

[0047] Based on the above embodiment, the provision of the second opening facilitates the electric toothbrush to be taken out and placed in the receiving groove from the end of the charging device.

[0048] In some embodiments, at least a portion of the power supply contact protrudes outward from the groove surface of the accommodating groove, and the power supply contact is elastic.

[0049] Based on the above embodiment, the power supply contact is raised relative to the groove surface of the accommodating groove, which is more conducive to the charging contact and electrical connection with the power supply contact.

[0050] In some of the embodiments, a second alignment portion is formed on the groove surface of the accommodating groove, the second alignment portion is exposed on the groove surface of the accommodating groove, and the second alignment portion is used for alignment connection with the electric toothbrush.

[0051] Based on the above embodiments, the provision of the second alignment portion can improve the alignment efficiency and alignment accuracy between the electric toothbrush and the charging device.

[0052] In some embodiments, the accommodating groove includes a first groove extending along the length direction of the electric toothbrush and a second groove connected to the first groove, the first groove is used to place at least part of the brush head of the electric toothbrush, and the second groove is used to place at least part of the handle.

[0053] Based on the above embodiment, the accommodating groove is used to accommodate the brush head in addition to the handle, which can better achieve the connection stability between the electric toothbrush and the charging device.

[0054] In some embodiments, the charging device includes a first end and a second end opposite to each other along the length direction of the electric toothbrush, the first groove is closer to the first end than the second groove, the power supply component includes a battery, the battery is located in the device housing, the battery is electrically connected to the power supply contact, and the battery is closer to the first end between the first end and the second end.

[0055] Based on the above embodiment, the battery is arranged closer to the first end, so that the center of gravity of the charging device is closer to the first end. The center of gravity of the electric toothbrush is closer to the handle, and the end of the receiving groove for receiving the brush head is arranged closer to the first end, so that the center of gravity of the electric toothbrush is closer to the second end, so that the combined center of gravity of the charging device and the electric toothbrush is more centered, improving the feel of holding and carrying.

[0056] In some of the embodiments, the charging device further includes a second magnetic component, which is fixed relative to the device housing, and is used to magnetically align with the electric toothbrush to achieve conductive contact between the power supply contacts and the charging contacts.

[0057] Based on the above embodiment, if the charging contacts of the electric toothbrush are offset during the placement process relative to the power supply contacts on the charging device, the charging contacts and the power supply contacts will be aligned during the magnetic attraction and alignment between the first magnetic component and the second magnetic component, thereby achieving reliable electrical connection between the charging contacts and the power supply contacts.

[0058] In a third aspect, an embodiment of the present application provides an electric toothbrush assembly, the electric toothbrush assembly includes the above-mentioned electric toothbrush; and / or the electric toothbrush assembly includes the above-mentioned charging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0060] Figure 1 is a schematic diagram of the structure of an electric toothbrush provided in an embodiment of the present application;

[0061] Figure 2 yes Figure 1 A schematic diagram of the exploded structure of the handle in the electric toothbrush is shown;

[0062] Figure 3 yes Figure 1 A schematic diagram of a partial cross-sectional structure of a handle in an electric toothbrush is shown;

[0063] Figure 4 yes Figure 3 A schematic diagram of a local enlarged structure;

[0064] Figure 5 yes Figure 1 A schematic diagram of a partial structure of a charging assembly in an electric toothbrush is shown;

[0065] Figure 6 yes Figure 1 A schematic diagram of a partial explosion structure of an electric toothbrush is shown;

[0066] Figure 7 is a schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0067] Figure 8 yes Figure 7 A schematic cross-sectional view of a charging device is shown;

[0068] Fig. 9 yes Figure 8 A schematic diagram of a local enlarged structure;

[0069] Fig.10 is a schematic structural diagram of an electric toothbrush assembly provided in an embodiment of the present application;

[0070] Fig.11 yes Fig.10 A schematic diagram of the exploded structure of an electric toothbrush assembly is shown.

[0071] Description of reference numerals:

[0072] 1. Electric toothbrush;

[0073] 10. handle; 11. handle tube; 111. outer side; 112. mounting hole; 1121. first mounting hole; 1122. second mounting hole; 113. housing; 114. lining; 1141. limiting surface; 12. circuit board; 13. charging assembly; 131. charging contact; 132. insulating mounting member; 1321. first alignment portion; 1322. through hole; 1323. step surface; 1324. first surface; 1325. second surface; 133. convex rib; 14. first magnetic member; 15. bracket; 16. motor; 17. conductive member; 18. interactive member; 181. button; 182. display member;

[0074] 20. Brush head;

[0075] 2. Charging equipment;

[0076] 50. Equipment housing; 51. Accommodating groove; 511. First groove; 512. Second groove; 52. Groove surface; 53. First opening; 54. Second opening; 55. Second alignment portion;

[0077] 60. Power supply assembly; 61. Battery;

[0078] 70. Power supply assembly; 71. Power supply contact;

[0079] 80. A second magnetic attraction member;

[0080] 91, first end; 92, second end;

[0081] 3. Electric toothbrush components. DETAILED DESCRIPTION

[0082] In order to make the objectives, technical solutions and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0083] When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0084] See also Figures 1 to 3 The present invention provides an electric toothbrush 1, which includes a handle 10, the handle 10 including a handle barrel 11, a circuit board 12 and a charging assembly 13. The handle barrel 11 has an outer side surface 111 surrounding the length direction of the electric toothbrush 1. The circuit board 12 is located in the handle barrel 11. The charging assembly 13 is fixed relative to the handle barrel 11, and the charging assembly 13 includes a charging device 2 for connecting to the outside of the electric toothbrush 1 (see Figure 7) A charging contact 131 for conductive contact, the charging contact 131 is electrically connected to the circuit board 12, and the charging contact 131 is exposed on the outer side surface 111 of the handle tube 11.

[0085] Exposing the charging contacts 131 on the outer side surface 111 of the handle tube 11 can avoid water accumulation in the charging component 13, prevent the exposed charging contacts 131 from being in a wet state for a long time, and extend the service life of the charging component 13, compared with the related art in which the charging structure is set on the bottom surface of the handle tube. When the electric toothbrush is placed upright, the liquid flows to the bottom surface and accumulates, which can easily cause corrosion of the charging structure, poor contact, or even short circuit.

[0086] In some embodiments, the charging component 13 includes a plurality of charging contacts 131 for conductively contacting the charging device 2 outside the electric toothbrush 1. For example, the charging component 13 includes two charging contacts 131, and the like, which is not limited thereto.

[0087] In some embodiments, the charging assembly 13 may include a plurality of electrical contacts, wherein the electrical contacts may be the charging contacts 131 described above, and the electrical contacts may also be data contacts (not shown in the figure) for burning data, etc. The data contacts are electrically connected to the circuit board 12, and the data contacts may be exposed on the outer side 111 of the handle tube 11.

[0088] In some embodiments, if the charging component 13 includes two electrical contacts, the two electrical contacts may both be charging contacts 131. In other embodiments, if the charging component 13 includes at least three electrical contacts, two of the electrical contacts may both be charging contacts 131, and the remaining electrical contacts may be data contacts, etc., which are not limited thereto.

[0089] In some embodiments, see Figure 4 The charging assembly 13 includes an insulating mounting member 132 and a plurality of electrical contacts, wherein the plurality of electrical contacts are installed on the insulating mounting member 132 at intervals, and the insulating mounting member 132 is installed on the handle tube 11. The plurality of electrical contacts are installed on the insulating mounting member 132 at intervals, so that insulation between the plurality of electrical contacts can be achieved. Compared with directly installing the electrical contacts on the handle tube, the material requirements for the handle tube 11 can be reduced. When assembling the electric toothbrush 1, the electrical contacts can be installed on the insulating mounting member 132 and then assembled with the handle tube 11. Compared with directly assembling the electrical contacts with the handle tube, the assembly operation is more convenient.

[0090] In the embodiment of the present application, the charging component 13 includes a plurality of charging contacts 131 , and the plurality of charging contacts 131 are installed on an insulating mounting member 132 at intervals from each other, so as to avoid a short circuit caused by direct contact of the plurality of charging contacts 131 .

[0091] For example, the insulating mounting member 132 may be provided with through holes 1322 equal to the number of electrical contacts, and each electrical contact may be installed on the insulating mounting member 132 corresponding to each through hole 1322. The provision of the through holes 1322 may limit the installation position of the electrical contact on the insulating mounting member 132, which is conducive to improving the installation accuracy of the electrical contact. Figure 4 2 shows that two through holes 1322 are provided on the insulating mounting member 132 , and each of the two charging contacts 131 is respectively installed on the insulating mounting member 132 corresponding to one through hole 1322 .

[0092] In some embodiments, the inner wall surface of the through hole 1322 formed by the insulating mounting member 132 may include a step surface 1323, and at least a portion of the electrical contact may be located in the through hole 1322 and in contact with the step surface 1323. The provision of the step surface 1323 can limit the depth of the electrical contact inserted into the through hole 1322 of the insulating mounting member 132, and can increase the contact area between the electrical contact and the insulating mounting member 132, thereby improving the connection reliability between the two. Figure 4 , it is shown that the insulating mounting member 132 includes a step surface 1323 , and at least a portion of the charging contact 131 is located in the through hole 1322 and contacts the step surface 1323 .

[0093] In some embodiments, the insulating mounting member 132 and the electrical contacts (such as charging contacts 131 and data contacts) can be independently molded and then assembled. In other embodiments, the insulating mounting member 132 and the electrical contacts (such as charging contacts 131 and data contacts) are an integrally molded structure. In this way, the insulating mounting member 132 and the electrical contacts can maintain a seamless structure, improve waterproofness, and effectively prevent dirt from accumulating in the gaps. Among them, the integrally molded structure between the insulating mounting member 132 and the electrical contacts (such as charging contacts 131 and data contacts) can be: the insulating mounting member 132 and the electrical contacts (such as charging contacts 131 and data contacts) are injection molded into an integrally molded structure, which is not limited to this.

[0094] In some embodiments, the insulating mounting member 132 is provided with a first alignment portion 1321, the first alignment portion 1321 is exposed on the outer side surface 111 of the handle tube 11, and the first alignment portion 1321 is used to align with the external charging device 2. The provision of the first alignment portion 1321 can improve the alignment efficiency and alignment accuracy of the electric toothbrush 1 and the charging device 2.

[0095] Furthermore, the charging device 2 is provided with a second alignment portion 55 for aligning with the first alignment portion 1321 , which will be described in more detail below.

[0096] Exemplarily, a portion of the insulating mounting member 132 is convex or concave to form the first alignment portion 1321. In this way, the portion of the insulating mounting member 132 where the first alignment portion 1321 is provided and the portion where the first alignment portion 1321 is not provided can be differentiated, which is beneficial for the electric toothbrush 1 and the charging device 2 to be aligned via the first alignment portion 1321.

[0097] In other embodiments, the insulating mounting member 132 is partially raised to form the first alignment portion 1321, and the charging device 2 is partially recessed to form the second alignment portion 55. In other embodiments, the insulating mounting member 132 is partially recessed to form the first alignment portion 1321, and the charging device 2 is partially raised to form the second alignment portion 55. This will be described in more detail below.

[0098] Furthermore, the first alignment portion 1321 is located between two adjacent electrical contacts. In this way, if the first alignment portion 1321 is formed by a partial depression of the insulating mounting member 132, the first alignment portion 1321 can accommodate liquid near the electrical contacts, effectively preventing short circuits between the electrical contacts caused by the liquid. If the first alignment portion 1321 is formed by a partial protrusion of the insulating mounting member 132, the second alignment portion 55 corresponding to the first alignment portion 1321 formed on the charging device 2 is roughly recessed, and can accommodate liquid near the electrical contacts, effectively preventing short circuits between the electrical contacts caused by the liquid. Among them, Figure 4 It is shown in FIG. 1 that the first alignment portion 1321 is located between two adjacent charging contacts 131 , and a portion of the insulating mounting member 132 is raised to form the first alignment portion 1321 .

[0099] In this embodiment, the insulating mounting member 132 and the handle tube 11 are integrally formed. In this way, the handle tube 11 can maintain a seamless structure, improve waterproofness, and effectively prevent dirt from accumulating in the gaps. The above-mentioned insulating mounting member 132 and the handle tube 11 are integrally formed as follows: the insulating mounting member 132 and the handle tube 11 are injection molded into an integrally formed structure.

[0100] In other embodiments, the insulating mounting member 132 and the handle tube 11 can be formed separately and then connected. Figure 4 The handle tube 11 is formed with a mounting hole 112, and the insulating mounting member 132 is embedded in the mounting hole 112. At this time, the insulating mounting member 132 can be connected to the handle tube 11 by dispensing glue or the like, which is not limited.

[0101] The insulating mounting member 132 may include a first surface 1324 and a second surface 1325 that are opposite to each other, and the first surface 1324 is located outside the second surface 1325 .

[0102] In some embodiments, the through hole 1322 passes through the first surface 1324 and the second surface 1325 of the insulating mounting member 132 , so that part of the electrical contact disposed in the through hole 1322 can be electrically connected to the circuit board 12 in the handle tube 11 , and part can be exposed on the outer side surface 111 .

[0103] Furthermore, the first surface 1324 and the outer side surface 111 of the handle tube 11 can have a smooth transition to avoid dirt and grime, improve the water flow conductivity of the surface, and further improve the mildew-proof effect. For example, the first surface 1324 and the part of the outer side surface 111 of the handle tube 11 located outside the first surface 1324 are located in the same plane or in the same arc surface, etc., which is not limited to this.

[0104] The first surface 1324 and the end surface of the electrical contact exposed on the outer side surface 111 can be smoothly transitioned. For example, the first surface 1324 and the end surface of the electrical contact exposed on the outer side surface 111 are located in the same plane or in the same arc surface, etc., which is not limited to this. This avoids the problem of pits and dead corners on the surface of the handle tube 11 causing water accumulation.

[0105] See also Figure 4 and Figure 5 The charging assembly 13 further includes a rib 133, which is connected to the second surface 1325 of the insulating mounting member 132 and protrudes from the second surface 1325. The rib 133 is disposed around the periphery of the electrical contacts (e.g., the charging contacts 131 and the data contacts). The provision of the rib 133 can improve the sealing between the charging assembly 13 and the handle tube 11.

[0106] See again Figure 4 The handle tube 11 includes a shell 113, and the shell 113 has an outer side surface 111, and the shell 113 is a metal part. The shell 113 can be made of a magnetic metal part or a non-magnetic metal part. If the shell 113 is made of a magnetic metal part, when the electric toothbrush 1 and the charging device 2 are in conductive contact, the electric toothbrush 1 and the charging device 2 can be magnetically connected to avoid separation during the charging process. If the shell 113 is made of a non-magnetic metal part, when a magnetic part is additionally provided on the handle, it can be avoided that the magnetism of the shell 113 and the specially provided magnetic part interfere with each other. The non-magnetic metal part can include stainless steel, aluminum alloy, etc., which is not limited to this.

[0107] When the handle tube 11 includes a metal outer shell 113, the handle tube 11 also includes an inner lining 114, which is connected to the inner side of the outer shell 113 and is a plastic part. Compared with metal parts, plastic parts have stronger processability and are easy to be molded into a structure for connecting with the movement. Therefore, the inner lining 114 is provided on the inner side of the metal outer shell 113, which is conducive to the installation of the movement in the handle tube 11.

[0108] In some embodiments, the lining 114 may be connected to the inner side of the outer shell 113 by a process such as injection molding, which is not limited thereto.

[0109] In some embodiments, the electric toothbrush 1 further comprises a bracket 15, the circuit board 12 is mounted on the bracket 15, and the bracket 15 is connected to the lining 114. The arrangement of the bracket 15 facilitates the installation and positioning of the movement in the handle tube 11.

[0110] In some embodiments, see Figure 4 and Figure 6 The outer side surface 111 of the housing 113 is formed with a first mounting hole 1121, and the inner liner 114 is formed with a second mounting hole 1122 communicating with the first mounting hole 1121. When viewed along the first mounting hole 1121 of the outer side surface 111, the inner liner 114 has a limiting surface 1141 located in the first mounting hole 1121 and surrounding the second mounting hole 1122. At least a portion of the insulating mounting member 132 is located in the first mounting hole 1121 and in contact with the limiting surface 1141 of the inner liner 114. By providing the limiting surface 1141 on the inner liner 114, the connectivity between the insulating mounting member 132 and the handle tube 11 can be improved.

[0111] In some embodiments, the limiting surface 1141 may be located at the end of the second mounting hole 1122 close to the first mounting hole 1121. Figure 4 The limiting surface 1141 can be formed in the middle of the second mounting hole 1122 .

[0112] In some embodiments, the convex rib 133 is located in the second mounting hole 1122 to prevent the convex rib 133 from extending into the handle tube 11 and causing obstacles to the installation of components in the handle tube 11 .

[0113] In some embodiments, the handle 10 also includes a first magnetic component 14, which is fixed relative to the handle tube 11. The first magnetic component 14 is used to form a magnetic connection with an external charging device 2, thereby achieving a reliable electrical connection between the electrical contacts on the electric toothbrush 1 and the charging device 2.

[0114] In some embodiments, the first magnetic member 14 and the charging assembly 13 may be an integrally formed structure. For example, the two may be injection molded into an integrally formed structure. In other embodiments, the first magnetic member 14 may also be independently provided with the charging assembly 13.

[0115] In some embodiments, the first magnetic element 14 and the charging assembly 13 can be connected as one body and then injection molded on the handle tube 11 .

[0116] In some embodiments, if the handle tube 11 includes an outer shell 113 and an inner lining 114, the outer shell 113 may be a non-magnetic metal part, the inner lining 114 may be a plastic part, and the first magnetic member 14 is connected to the inner lining 114. The outer shell 113 is a non-magnetic metal part to avoid mutual interference with the first magnetic member 14.

[0117] In some embodiments, the first magnetic element 114 can be directly connected to the liner 114 by injection molding when the liner 114 is injection molded.

[0118] In some embodiments, the first magnetic member 14 is separately arranged from the charging assembly 13 along the length direction of the electric toothbrush 1. Separating the first magnetic member 14 from the charging assembly 13 along the length direction of the electric toothbrush 1 can make the first magnetic member 14 larger and ensure the magnetic attraction.

[0119] In some embodiments, the first magnetic member 14 is located above the electrical contacts (e.g., charging contacts 131, data contacts) along the length direction of the electric toothbrush 1. The first magnetic member 14 being located above the electrical contacts can be understood as: the first magnetic member 14 is closer to the brush head 20 of the electric toothbrush 1 than the electrical contacts. This can further ensure that there is enough space on the electric toothbrush 1 to set the first magnetic member 14, ensuring that a sufficiently large magnetic attraction is generated.

[0120] Exemplarily, at least part of the first magnetic element 14 is embedded in the inner wall of the handle tube 11, specifically, in the inner wall of the lining 114. In this way, the distance between the first magnetic element 14 and the outer side surface 111 of the handle tube 11 can be made closer, further improving the magnetic attraction effect.

[0121] Furthermore, the first magnetic member 14 is connected to at least a portion of the handle tube 11 by molding. For example, if the handle tube 11 includes a shell 113 and an inner lining 114, the first magnetic member 14 can be connected to the inner lining 114 when the inner lining 114 is injection molded.

[0122] The first magnetic attraction member 14 may be a permanent magnet, such as a magnet, which is not limited thereto.

[0123] In some embodiments, please refer again to Figure 3 The electric toothbrush 1 further comprises a motor 16, which is located in the handle tube 11, and is spaced apart from the first magnetic member 14 along the length direction of the electric toothbrush 1. The motor 16 comprises a coil and a magnet, and is spaced apart from the first magnetic member 14 along the length direction of the electric toothbrush 1, which can reduce or even avoid the magnetic field of the first magnetic member 14 interfering with the operation of the motor 16, and avoid the first magnetic member 14 causing the motor 16 to have problems such as a decrease in output power, an increase in noise, and an increase in temperature.

[0124] See also Figure 3 and Figure 4The circuit board 12 is the main board of the electric toothbrush 1, and the charging assembly 13 further includes a conductive member 17, and the charging contact 131 is electrically connected to the circuit board 12 through the conductive member 17. The charging assembly 13 is designed to be directly electrically connected to the main board of the electric toothbrush 1. Compared with the related art in which the charging assembly is electrically connected to a charging small board outside the main board, the setting of the charging small board can be omitted, and the charging circuit can be directly integrated on the main board.

[0125] In some embodiments, see Figure 3 The electric toothbrush 1 further includes an interactive member 18, which is disposed on the outer side 111 of the handle tube 11. The interactive member 18 and the electrical contacts (e.g., charging contacts 131 and data contacts) are located on the same side of the outer side 111. The side where the interactive member 18 is disposed is usually the front side of the electric toothbrush 1. In this way, the electrical contacts will be exposed on the front side of the outer side 111 of the handle tube 11, corresponding to the front side of the circuit board 12, and the conductive member 17 electrically connecting the charging assembly 13 and the circuit board 12 can be shortened.

[0126] In some embodiments, the interactive element 18 is a device on the electric toothbrush 1 for interacting with the user. For example, the interactive element 18 can be at least one of a button 181 and a display element 182.

[0127] The conductive element 17 may be any device having conductive properties.

[0128] In some embodiments, the conductive member 17 may be a wire or the like.

[0129] In other embodiments, the conductive member 17 is disposed on the circuit board 12 and is elastic. The electrical contacts (e.g., charging contacts 131 and data contacts) are exposed on the inner wall of the handle tube 11, and the conductive member 17 forms a contact-type electrical connection with the electrical contacts (e.g., charging contacts 131 and data contacts). In this way, after the movement is installed in place in the handle tube 11, the conductive member 17 on the circuit board 12 can directly contact the electrical contacts for electrical conduction without the need for wiring, welding, and the like. The conductive member 17 designed as above is elastic, so the conductive member 17 can be deformed under the push of the movement when the movement is installed in the handle tube 11, so that the movement can be smoothly loaded into the handle tube 11, and after the movement is installed in place, the conductive member 17 can form a contact-type electrical connection with the electrical contacts (e.g., charging contacts 131 and data contacts).

[0130] Exemplarily, the conductive member 17 may be a spring fixed on the circuit board 12 , which is not limited thereto.

[0131] In some embodiments, the conductive member 17 is disposed on a side of the circuit board 12 facing the charging contact 131. In this way, the conductive member 17 electrically connected to the charging assembly 13 and the circuit board 12 can be shortened, and the conductive member 17 is facilitated to form a contact-type electrical connection with the electrical contacts (e.g., the charging contacts 131, the data contacts).

[0132] Along the length direction of the electric toothbrush 1, the electrical contacts (such as the charging contacts 131 and the data contacts) are located below the interactive member 18. That is, along the length direction of the electric toothbrush 1, the electrical contacts are farther away from the brush head 20 than the interactive member 18. Since the part of the handle barrel 11 close to the brush head 20 usually needs to be provided with buttons, lights, screens and other components for interaction, the part of the circuit board 12 close to the brush head 20 is correspondingly provided with corresponding electronic components for interaction, and then the charging circuit on the circuit board 12 for electrical connection with the charging assembly 13 is arranged closer to the part of the handle barrel 11 away from the brush head 20, so that the length of the conductive member 17 can be shortened.

[0133] In some embodiments, the electric toothbrush 1 includes a motor 16 and an interactive member 18, wherein the motor 16 is located in the handle tube 11 and is fixed relative to the handle tube 11, the interactive member 18 is fixed relative to the handle tube 11, the interactive member 18 is electrically connected to the circuit board 12, and the output shaft of the motor 16 is further away from the interactive member 18 than the central axis of the handle tube 11. The central axis of the handle tube 11 roughly corresponds to the central axis of the handle 10, and the output shaft of the motor 16 is further away from the interactive member 18 than the central axis of the handle tube 11, so that when the electric toothbrush 1 is lying, the center of gravity of the electric toothbrush 1 is further away from the interactive member 18, and the electric toothbrush 1 has a tendency to roll toward the bottom, so that the front of the lying electric toothbrush 1 faces upward, and then the electrical contacts (such as the charging contacts 131 and the data contacts) face upward, reducing the risk of water accumulation at the electrical contacts.

[0134] See also Figures 7 to 9 , the embodiment of the present application provides a charging device 2 for an electric toothbrush 1. The charging device 2 includes a device housing 50, a power supply assembly 60 and a power supply assembly 70. A receiving groove 51 is formed on the surface of the device housing 50, and the receiving groove 51 has a groove surface 52 for cooperating with the outer side surface 111 of the handle 10 of the electric toothbrush 1. The power supply assembly 60 is located in the device housing 50. The power supply assembly 70 includes a power supply contact 71, which is electrically connected to the power supply assembly 60, and at least a portion of the power supply contact 71 is exposed on the groove surface 52 of the receiving groove 51, and the power supply contact 71 is used to be in conductive contact with the charging contact 131 exposed on the outer side surface 111 of the handle 10.

[0135] The charging device 2 is provided with a receiving groove 51, which can accommodate at least part of the electric toothbrush 1, so that the charging device 2 can keep the two relatively stable during the process of charging the electric toothbrush 1, ensuring smooth charging. At least part of the power supply contact 71 of the charging device 2 is exposed on the groove surface 52. Since the groove surface 52 cooperates with the outer side surface 111 of the handle 10, when the electric toothbrush 1 is placed in the receiving groove 51, the charging contact 131 on the electric toothbrush 1 corresponds to the power supply contact 71 on the charging device 2.

[0136] In some embodiments, the receiving groove 51 matches the shape of the electric toothbrush 1 , so that when the electric toothbrush 1 is placed in the receiving groove 51 , the power supply contact 71 and the charging contact 131 can be aligned.

[0137] In other embodiments, the charging device 2 further includes a second magnetic member 80, which is fixed relative to the device housing 50, and is used to magnetically align with the electric toothbrush 1 (e.g., the first magnetic member 14) to achieve conductive contact between the power supply contact 71 and the charging contact 131. In this way, if the charging contact 131 of the electric toothbrush 1 is offset during the placement process relative to the power supply contact 71 on the charging device 2, the charging contact 131 will also be aligned with the power supply contact 71 during the mutual magnetic alignment of the first magnetic member 14 and the second magnetic member 80, thereby achieving reliable electrical connection between the charging contact 131 and the power supply contact 71.

[0138] In another embodiment, the accommodating groove 51 can be provided to match the shape of the electric toothbrush 1, and the charging device 2 can be provided to include a second magnetic attraction member 80 that is magnetically aligned with the first magnetic attraction member 14, so that the charging contacts 131 and the power supply contacts 71 can be aligned from multiple aspects, thereby achieving a reliable electrical connection between the charging contacts 131 and the power supply contacts 71.

[0139] In some embodiments, the receiving groove 51 is an open groove provided on the surface of the device housing 50, and the charging device 2 may not be provided with a cover, and the electric toothbrush 1 may be directly taken in and put out. It should be noted that when the charging device 2 includes a second magnetic member 80 magnetically connected to the first magnetic member 14 of the electric toothbrush 1, the magnetic attraction force of the first magnetic member 14 and the second magnetic member 80 may satisfy that when the receiving groove 51 faces any direction, the electric toothbrush 1 will not be separated from the receiving groove 51 without force.

[0140] In some embodiments, the accommodating groove 51 extends along the length direction of the electric toothbrush 1, and a first opening 53 connected to the accommodating groove 51 is formed on the surface of the device housing 50. The first opening 53 is connected to the accommodating groove 51 in a direction perpendicular to the length direction of the electric toothbrush 1, and the first opening 53 extends along the length direction of the electric toothbrush 1. The provision of the first opening 53 facilitates the electric toothbrush 1 to be taken in and out of the accommodating groove 51 from the side of the charging device 2, and the taking and putting is convenient due to the large opening space of the first opening 53.

[0141] In other embodiments, a second opening 54 communicating with the receiving groove 51 is further formed on the surface of the device housing 50, and the second opening 54 is communicated with the receiving groove 51 along the length direction of the electric toothbrush 1. The second opening 54 is provided to facilitate the electric toothbrush 1 to complete the operation of taking and placing the electric toothbrush 1 in the receiving groove 51 from the end of the charging device 2.

[0142] In some other embodiments, the surface of the device housing 50 is formed with both the first opening 53 and the second opening 54, so that the open space of the accommodating groove 51 is larger, and the electric toothbrush 1 is more convenient to take and put.

[0143] In some embodiments, at least a portion of the power supply contact 71 protrudes from the groove surface 52 of the accommodating groove 51, and the power supply contact 71 is elastic. The power supply contact 71 may be an elastic electrical contact. The power supply contact 71 protrudes relative to the groove surface 52 of the accommodating groove 51, which is more conducive to the charging contact 131 contacting and electrically connecting with the power supply contact 71.

[0144] In some embodiments, when the charging device 2 includes a second magnetic member 80 magnetically connected to the first magnetic member 14 of the electric toothbrush 1, the magnetic attraction of the first magnetic member 14 and the second magnetic member 80 can satisfy the following conditions: when the electric toothbrush 1 is placed in the receiving groove 51, the elastic power supply contact 71 will be compressed until the outer side surface 111 of the handle tube 11 is in contact with the groove surface 52 of the receiving groove 51. In this way, the installation stability of the electric toothbrush 1 in the receiving groove 51 can be improved.

[0145] In some embodiments, see Fig. 9 The groove surface 52 of the receiving groove 51 is formed with a second alignment portion 55, which is exposed on the groove surface 52 of the receiving groove 51 and is used to align with the electric toothbrush 1. In combination with the above description, the second alignment portion 55 is used to align with the first alignment portion 1321 on the electric toothbrush 1.

[0146] In some embodiments, a portion of the insulating mounting member 132 is protruded to form a first alignment portion 1321, and a portion of the groove surface 52 of the receiving groove 51 is recessed to form a second alignment portion 55. In other embodiments, a portion of the insulating mounting member 132 is recessed to form the first alignment portion 1321, and a portion of the groove surface 52 of the receiving groove 51 is protruded to form the second alignment portion 55.

[0147] In the embodiment of the present application, a portion of the groove surface 52 of the accommodating groove 51 is recessed to form a second alignment portion 55. In this way, the second alignment portion 55 can accommodate liquid on the electric toothbrush 1 to prevent short circuit problems between electrical contacts caused by liquid.

[0148] In some embodiments, the charging device 2 includes power supply contacts 71 equal in number to the charging contacts 131 of the electric toothbrush 1, for example, the charging device 2 includes two power supply contacts 71. At this time, the second alignment portion 55 is located between two adjacent power supply contacts 71, so that the second alignment portion 55 formed by the depression can accommodate liquid near the power contacts, effectively preventing the short circuit problem between the power contacts caused by the liquid.

[0149] In some embodiments, the receiving groove 51 may be used only to place at least a portion of the handle 10 of the electric toothbrush 1 .

[0150] In other embodiments, the receiving groove 51 can be used to accommodate at least a portion of the handle 10 of the electric toothbrush 1, and can also be used to accommodate at least a portion of the brush head 20 of the electric toothbrush 1. Figure 8 , Fig.10 and Fig.11 The receiving groove 51 includes a first groove 511 extending along the length direction of the electric toothbrush 1 and a second groove 512 connected to the first groove 511. The first groove 511 is used to place at least a part of the brush head 20 of the electric toothbrush 1, and the second groove 512 is used to place at least a part of the handle 10. The receiving groove 51 is provided to accommodate the brush head 20 in addition to the handle 10, so as to better achieve the connection stability between the electric toothbrush 1 and the charging device 2.

[0151] In some embodiments, if at least part of the brush head 20 is placed in the receiving groove 51, the bristles of the brush head 20 can be shielded by the groove surface 52 of the receiving groove 51 to prevent the brush head 20 from being soiled when charging or carrying the toothbrush.

[0152] In some embodiments, continue to refer to Figure 8 The charging device 2 includes a first end 91 and a second end 92 opposite to each other along the length direction of the electric toothbrush 1. The first groove 511 is closer to the first end 91 than the second groove 512. The power supply assembly 60 includes a battery 61. The battery 61 is located in the device housing 50. The battery 61 is electrically connected to the power supply contact 71. The battery 61 is closer to the first end 91 and the second end 92. The battery 61 is arranged closer to the first end 91, so that the center of gravity of the charging device 2 will be closer to the first end 91. The center of gravity of the electric toothbrush 1 is closer to the handle 10. The end of the accommodating groove 51 for accommodating the brush head 20 is arranged closer to the first end 91. In this way, the center of gravity of the electric toothbrush 1 is closer to the second end 92, so that the combined center of gravity of the charging device 2 and the electric toothbrush 1 is more centered, which improves the hand feeling of holding and carrying.

[0153] In some embodiments, the second opening 54 is disposed at the second end 92. Thus, compared with the second opening 54 being disposed at the first end 91, the first groove 511 can better shield the bristles of the brush head 20 to prevent the brush head 20 from being dirty when charging or carrying the toothbrush.

[0154] See also Fig.10 and Fig.11 , the embodiment of the present application provides an electric toothbrush assembly 3. The electric toothbrush assembly 3 may include the electric toothbrush 1 mentioned above. The electric toothbrush assembly 3 may also include the charging device 2 mentioned above. The electric toothbrush assembly 3 may also include the electric toothbrush 1 and the charging device 2 mentioned above at the same time.

[0155] In the description of the present application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to at least two, for example, two, three, four, etc. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0156] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An electric toothbrush, characterized in that: The electric toothbrush comprises a handle, and the handle comprises: A handle tube, the handle tube having an outer side surface surrounding the length direction of the electric toothbrush; a circuit board, the circuit board being located in the handle tube; and, A charging component, wherein the charging component is fixed relative to the handle tube and includes charging contacts for conductive contact with a charging device outside the electric toothbrush, wherein the charging contacts are electrically connected to the circuit board and are exposed on the outer side of the handle tube.

2. The electric toothbrush according to claim 1, characterized in that: The charging assembly includes an insulating mounting member and a plurality of charging contacts. The plurality of charging contacts are installed on the insulating mounting member at intervals from each other, and the insulating mounting member is installed on the handle tube.

3. The electric toothbrush according to claim 2, characterized in that: The insulating mounting member is provided with a first alignment portion, the first alignment portion is exposed on the outer side surface of the handle tube, and the first alignment portion is used for alignment with the external charging device.

4. The electric toothbrush according to claim 3, characterized in that: The first alignment portion is located between two adjacent charging contacts; And / or, a portion of the insulating mounting member is raised or recessed to form the first alignment portion.

5. The electric toothbrush according to claim 2, characterized in that: The insulating mounting piece and the handle tube are an integrally formed structure, or the handle tube is formed with a mounting hole, and the insulating mounting piece is embedded in the mounting hole.

6. The electric toothbrush according to claim 2, characterized in that: The handle tube comprises: The shell has the outer side surface, and the shell is a metal part.

7. The electric toothbrush according to claim 6, characterized in that: The handle tube further comprises an inner lining, which is injection-moldedly connected to the inner side of the outer shell and is a plastic part; The electric toothbrush also includes a bracket, the circuit board is mounted on the bracket, and the bracket is connected to the lining.

8. The electric toothbrush according to claim 7, characterized in that: The outer side of the shell is formed with a first mounting hole, and the inner liner is formed with a second mounting hole communicating with the first mounting hole. Observing the first mounting hole along the outer side surface, the liner has a limiting surface located in the first mounting hole and surrounding the second mounting hole, and at least a portion of the insulating mounting member is located in the first mounting hole and in contact with the limiting surface of the liner.

9. The electric toothbrush according to claim 1, characterized in that: The handle also includes: A first magnetic member, wherein the first magnetic member is fixed relative to the handle tube, and the first magnetic member is used to form a magnetic connection with the external charging device.

10. The electric toothbrush according to claim 9, characterized in that: The handle tube comprises an outer shell and an inner lining, wherein the outer shell has the outer side surface, and the inner lining is injection-molded and connected to the inner side of the outer shell. Wherein, the outer shell is a non-magnetic metal part, the inner lining is a plastic part, and the first magnetic attraction part is connected to the inner lining.

11. The electric toothbrush according to claim 9, characterized in that: The position of the first magnetic attraction member on the handle tube satisfies at least one of the following conditions: Along the length direction of the electric toothbrush, the first magnetic attraction member is located above the charging contact; The electric toothbrush further comprises a motor, which is located in the handle tube and spaced apart from the first magnetic attraction member along the length direction of the electric toothbrush; At least a portion of the first magnetic attraction component is embedded in the inner wall of the handle tube.

12. The electric toothbrush according to claim 1, characterized in that: The circuit board is the main board of the electric toothbrush, and the charging component also includes a conductive member, through which the charging contact is electrically connected to the circuit board.

13. The electric toothbrush according to claim 12, characterized in that: The electric toothbrush also includes: An interactive component, wherein the interactive component is disposed on the outer side surface of the handle tube, the interactive component comprises a button or a display component, and the interactive component and the charging contact are located on the same side of the outer side surface.

14. The electric toothbrush according to claim 13, characterized in that: The conductive member is arranged on the circuit board and has elasticity. The charging contact is exposed on the inner wall of the handle tube. The conductive member forms a contact-type electrical connection with the charging contact.

15. The electric toothbrush according to claim 13, characterized in that: The conductive member is arranged on a side of the circuit board facing the charging contact.

16. The electric toothbrush according to claim 1, characterized in that The electric toothbrush also includes: a motor, the motor being located in the handle tube and being fixed relative to the handle tube; and, An interactive member, wherein the interactive member is fixed relative to the handle tube, the interactive member is electrically connected to the circuit board, and the output shaft of the motor is farther away from the interactive member than the central axis of the handle tube.

17. A charging device for an electric toothbrush, characterized in that: include: A device housing, wherein a receiving groove is formed on a surface of the device housing, and the receiving groove has a groove surface for matching with an outer side surface of a handle of an electric toothbrush; A power supply assembly, the power supply assembly being located in the device housing; A power supply component, the power supply component includes a power supply contact, the power supply contact is electrically connected to the power supply component, at least part of the power supply contact is exposed on the groove surface of the accommodating groove, and the power supply contact is used to make conductive contact with the charging contact exposed on the outer side surface of the handle.

18. The charging device according to claim 17, characterized in that: The accommodating groove extends along the length direction of the electric toothbrush. The surface of the device housing also forms a first opening connected to the accommodating groove, the first opening is connected to the accommodating groove along a direction perpendicular to the length direction of the electric toothbrush, and the first opening extends along the length direction of the electric toothbrush; and / or, the surface of the device housing also forms a second opening connected to the accommodating groove, the second opening is connected to the accommodating groove along the length direction of the electric toothbrush.

19. The charging device according to claim 17, characterized in that: At least a portion of the power supply contact protrudes outward from the groove surface of the accommodating groove, and the power supply contact is elastic.

20. The charging device according to claim 17, characterized in that: A second alignment portion is formed on the groove surface of the accommodating groove, and the second alignment portion is exposed on the groove surface of the accommodating groove. The second alignment portion is used for alignment connection with the electric toothbrush.

21. The charging device according to claim 17, characterized in that: The accommodating groove includes a first groove extending along the length direction of the electric toothbrush and a second groove connected to the first groove, the first groove is used to place at least part of the brush head of the electric toothbrush, and the second groove is used to place at least part of the handle.

22. The charging device according to claim 21, characterized in that: The charging device comprises a first end and a second end opposite to each other along the length direction of the electric toothbrush, the first groove is closer to the first end than the second groove, and the power supply assembly comprises: A battery is located in the device housing, the battery is electrically connected to the power supply contact, and the battery is closer to the first end between the first end and the second end.

23. The charging device according to claim 17, characterized in that: The charging device also includes: The second magnetic attraction member is fixed relative to the device housing, and the second magnetic attraction member is used for magnetically aligning with the electric toothbrush to achieve conductive contact between the power supply contact and the charging contact.

24. An electric toothbrush assembly, characterized in that: An electric toothbrush comprising any one of claims 1 to 16; and / or, a charging device comprising any one of claims 17 to 23.

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