A compatible electric toothbrush

Abstract

This application relates to the field of electric toothbrush technology, and more particularly to a compatible electric toothbrush. When the toothbrush handle is fitted with a first toothbrush head, after the drive shaft is inserted into the slot, the locking part engages into the slot to prevent the first toothbrush head from detaching from the toothbrush handle. After the drive shaft is inserted into the insertion slot, the locking protrusion engages into the slot to prevent the second toothbrush head from detaching from the toothbrush handle. The first and second toothbrush heads are adapted to different operating modes. This allows the electric toothbrush to be compatible with different toothbrush heads. When users need to use different cleaning modes, they can simply replace the corresponding toothbrush head to meet their cleaning needs, reducing living costs and improving the user experience.

Description

Technical Field

[0001] This application relates to the field of electric toothbrush technology, and more particularly to a compatible electric toothbrush. Background Technology

[0002] As people place increasing importance on oral hygiene, the cleaning and care of the mouth are receiving corresponding attention. Electric toothbrushes, as oral cleaning tools, are gaining a larger market share, gradually replacing traditional toothbrushes, and becoming increasingly popular among users.

[0003] Most electric toothbrushes are powered by a motor, which in turn drives the brush head through a transmission mechanism to clean the user's mouth. Users have different cleaning needs depending on the situation, and different cleaning modes require different types of brush heads. Vibrating mode requires a vibrating brush head, while rotating mode requires a rotating brush head. However, existing electric toothbrushes are not compatible with different brush head models, forcing users to purchase multiple electric toothbrushes. This not only increases living costs but also complicates operation by requiring different controls for each toothbrush, reducing the user's experience.

[0004] It is clear that how to make electric toothbrushes compatible with different toothbrush heads is a technical problem that urgently needs to be solved. Utility Model Content

[0005] This application provides a compatible electric toothbrush, which aims to solve the technical problem in the prior art of how to make electric toothbrushes compatible with different toothbrush heads.

[0006] This application provides a compatible electric toothbrush, comprising:

[0007] A toothbrush handle, wherein a drive device is installed on the toothbrush handle, the drive device is provided with a drive shaft, and the drive shaft is provided with a slot;

[0008] The first toothbrush head has a slot, and the inner wall of the slot has a protruding snap-fit ​​part that is adapted to the slot.

[0009] The second toothbrush head is provided with a insertion groove, and the inner wall of the insertion groove is provided with a snap-fit ​​protrusion, which is adapted to the snap-fit ​​groove;

[0010] When the toothbrush handle is adapted to the first toothbrush head, after the drive shaft is inserted into the slot, the locking part is engaged in the slot to prevent the first toothbrush head from detaching from the toothbrush handle.

[0011] When the toothbrush handle is adapted to the second toothbrush head, after the drive shaft is inserted into the insertion slot, the locking protrusion is locked into the slot to prevent the second toothbrush head from detaching from the toothbrush handle.

[0012] The first toothbrush head and the second toothbrush head are adapted to different working modes.

[0013] Optionally, the first toothbrush head is configured as a vibrating toothbrush head, which is adapted to a vibration working mode;

[0014] The second toothbrush head is configured as a rotary toothbrush head, which is adapted to a rotary working mode.

[0015] Optionally, one end of the first toothbrush head is provided with bristles, and the slot is provided at the end of the first toothbrush head away from the bristles;

[0016] The driving device is used to drive the first toothbrush head to swing back and forth within a set angle range to achieve the effect of vibration of the first toothbrush head.

[0017] Optionally, the end of the first toothbrush head away from the bristles is provided with an adapter groove;

[0018] An adapter is fixedly installed in the adapter groove, and the slot is located in the adapter.

[0019] Optionally, the second toothbrush head includes:

[0020] Brush head housing,

[0021] A bristle assembly, which is rotatably mounted on the brush head housing;

[0022] The driving device is used to drive the bristle assembly to rotate relative to the brush head housing.

[0023] Optionally, the second toothbrush head further includes a transmission assembly, through which the drive device drives the bristle assembly to rotate;

[0024] The transmission assembly includes:

[0025] An adapter is rotatably mounted on the brush head housing, and a connector slot is provided in the adapter;

[0026] A rotating shaft is detachably mounted on the adapter, and the rotating shaft rotates synchronously with the adapter;

[0027] A reversing assembly, wherein the reversing assembly connects the bristle assembly and the rotating shaft;

[0028] During the rotation of the rotating shaft, the bristle assembly is driven to rotate by the reversing component.

[0029] Optionally, the electric toothbrush further includes:

[0030] The identification module is used to identify the first toothbrush head and the second toothbrush head.

[0031] A control module is provided, which controls the electric toothbrush based on the recognition result of the recognition module.

[0032] Optionally, the identification module includes an identification sensor;

[0033] One of the first toothbrush head and the second toothbrush head is provided with an identification element, which can be identified by the identification sensor.

[0034] Optionally, the identification sensor is configured as a Hall sensor, and the identification element is configured as a magnet.

[0035] Optionally, the toothbrush handle is provided with a recognition groove, and the second toothbrush head is provided with a recognition protrusion, the recognition protrusion being adapted to the recognition groove;

[0036] The identification sensor is positioned corresponding to the identification groove, and the identification component is fixedly installed on the identification protrusion.

[0037] When the second toothbrush head is installed on the toothbrush handle, the identification protrusion is embedded in the identification groove.

[0038] The beneficial effects achieved by this application are as follows: When the toothbrush handle is fitted with the first toothbrush head, after the drive shaft is inserted into the slot, the locking part engages in the slot to prevent the first toothbrush head from detaching from the toothbrush handle. After the drive shaft is inserted into the insertion slot, the locking protrusion engages in the slot to prevent the second toothbrush head from detaching from the toothbrush handle. The first and second toothbrush heads are adapted to different operating modes. This allows the electric toothbrush to be compatible with different toothbrush heads. When users need to use different cleaning modes, they can simply replace the corresponding toothbrush head to meet their cleaning needs, reducing living costs and improving their quality of life. Attached Figure Description

[0039] Figure 1 This is a three-dimensional structural diagram of the toothbrush handle with two types of toothbrush heads in an embodiment of the present utility model;

[0040] Figure 2 This is an embodiment of the present utility model. Figure 1 Enlarged view of point A in the middle;

[0041] Figure 3This is a three-dimensional structural diagram of the toothbrush handle adapted to the vibrating toothbrush head in an embodiment of this utility model;

[0042] Figure 4 This is a three-dimensional structural diagram of the toothbrush handle adapted to the rotary toothbrush head in an embodiment of this utility model;

[0043] Figure 5 This is an exploded structural diagram of the toothbrush handle with two types of toothbrush heads in an embodiment of the present invention;

[0044] Figure 6 This is a three-dimensional structural diagram of the toothbrush handle in an embodiment of this utility model;

[0045] Figure 7 This is an embodiment of the present utility model. Figure 6 Enlarged view at point B;

[0046] Figure 8 This is a cross-sectional view of the vibrating toothbrush head in an embodiment of this utility model;

[0047] Figure 9 This is a cross-sectional view of the rotary toothbrush head in an embodiment of this utility model;

[0048] Figure 10 This is an embodiment of the present utility model. Figure 9 A magnified view at point C;

[0049] Figure 11 This is a three-dimensional structural diagram of a partially cut-open vibrating toothbrush head in an embodiment of this utility model.

[0050] Figure 12 This is a three-dimensional structural diagram of the adapter in an embodiment of this utility model;

[0051] Figure 13 This is a cross-sectional view of the adapter in an embodiment of this utility model;

[0052] Figure 14 This is a three-dimensional structural diagram of the adapter in an embodiment of this utility model;

[0053] Figure 15 This is a cross-sectional view of the adapter in an embodiment of this utility model.

[0054] Explanation of main unit symbols:

[0055] 10. Electric toothbrush; 20. Toothbrush handle; 21. Drive unit; 22. Drive shaft; 23. Slot; 24. First anti-foolproof surface; 25. Second anti-foolproof surface; 301. First toothbrush head; 302. Vibrating toothbrush head; 31. Adapter groove; 32. First positioning groove; 33. Second positioning groove; 34. Limiting ring groove; 35. Adapter; 351. Slot; 352. Snap-fit ​​part; 353. First anti-foolproof part; 354. Second anti-foolproof part; 355. First positioning protrusion; 356. Second positioning protrusion; 357. Limiting ring protrusion; 401. Second toothbrush head; 402. Rotary toothbrush head; 41. Brush head housing; 411. Insertion groove; 412. Snap-fit ​​protrusion; 413. Limiting groove; 4 2. Fixed bushing; 421. Limiting protrusion; 422. Protrusion; 43. Transmission assembly; 431. Adapter; 432. Rotating shaft; 433. Annular groove; 434. Limiting ring; 44. Reversing assembly; 441. First bevel gear; 442. Snap-fit ​​groove; 443. Second bevel gear; 444. Linkage groove; 45. Brush assembly; 451. Brush disc assembly; 452. Through hole; 453. Screw; 454. Limiting part; 455. Shaft assembly; 456. Seal; 457. Socket hole; 458. Linkage protrusion; 46. Metal nut; 50. Identification module; 51. Identification sensor; 52. Identification component; 53. Identification groove; 54. Identification protrusion; 60. Control module. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar units or units having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as limiting the present utility model. Furthermore, it should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0057] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0059] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two units or the interaction between two units. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0062] Please see Figures 1 to 15In some embodiments of this application, an electric toothbrush 10 is provided, including: a rotary toothbrush head 402 and a toothbrush handle 20. A drive device 21 is installed in the toothbrush handle 20. The drive device 21 is provided with a drive shaft 22. The drive device 21 is connected to the transmission component 43 in the rotary toothbrush head 402 through the drive shaft 22, thereby driving the transmission component 43 to move through the drive shaft 22.

[0063] During the user's teeth cleaning process, the drive device 21 drives the transmission component 43 to operate, and then the power is transmitted to the bristle component 45 through the transmission component 43. The transmission component 43 then drives the bristle component 45 to rotate relative to the brush head housing 41, and the rotating bristle component 45 cleans the user's teeth.

[0064] In some embodiments of this application, a rotary electric toothbrush 10 is provided, comprising a rotary toothbrush head 402 and a toothbrush handle 20. The rotary toothbrush head 402 includes a brush head housing 41 and a bristle assembly 45, the bristle assembly 45 being rotatably mounted on the end of the brush head housing 41. The toothbrush handle 20 is connected to the end of the rotary toothbrush head 402 away from the bristle assembly 45, and a drive device 21 is mounted on the toothbrush handle 20. The drive device 21 drives the bristle assembly 45 to rotate relative to the brush head housing 41. The drive device 21 includes a drive shaft 22 with a slot 23, and the rotary toothbrush head 402 has an insertion groove 411 with a locking protrusion 412 protruding from the inner wall of the insertion groove 411. After the drive shaft 22 is inserted into the insertion groove 411, the locking protrusion 412 engages with the slot 23 to prevent the rotary toothbrush head 402 from disengaging from the toothbrush handle 20.

[0065] During the process of connecting the rotary toothbrush head 402 and the toothbrush handle 20, one end of the drive shaft 22 of the drive device 21 installed in the toothbrush handle 20 is inserted into the insertion slot 411 of the rotary toothbrush head 402. A locking protrusion 412 protruding from the inner wall of the insertion slot 411 is then engaged in the locking groove 23 of the drive shaft 22. The inner wall of the locking groove 23 limits the locking protrusion 412, thus preventing the rotary toothbrush head 402 from detaching from the toothbrush handle 20 and improving the reliability of the connection between them. The direct connection of the drive shaft 22 of the drive device 21 to the rotary toothbrush head 402 further improves the reliability of the internal structural connections of the electric toothbrush 10 and reduces the risk of loosening or jamming during use.

[0066] In some embodiments of this application, a rotary toothbrush head 402 is provided, including: a brush head housing 41, a bristle assembly 45, and a transmission assembly 43. The bristle assembly 45 is rotatably mounted on the brush head housing 41. The transmission assembly 43 is used to transmit external power to the bristle assembly 45 and drive the bristle assembly 45 to rotate relative to the brush head housing 41.

[0067] During the user's teeth cleaning process, the drive unit 21 drives the transmission component 43 to operate, thereby transmitting power to the bristle component 45. The transmission component 43 then drives the bristle component 45 to rotate relative to the brush head housing 41, thus cleaning the user's teeth through the rotating bristle component 45. This design is simple in structure, low in production cost, and reliable, effectively reducing the failure rate of the electric toothbrush 10.

[0068] In some embodiments of this application, a transmission assembly 43 is rotatably mounted inside the brush head housing 41, and a insertion slot 411 is provided at one end of the transmission assembly 43 near the toothbrush handle 20. The end of the transmission assembly 43 away from the toothbrush handle 20 is connected to the bristle assembly 45 so that the drive device 21 drives the bristle assembly 45 to rotate through the transmission assembly 43.

[0069] In the rotary cleaning mode, the drive unit 21 drives the transmission component 43 to operate, and then the power is transmitted to the bristle component 45 through the transmission component 43. The transmission component 43 then drives the bristle component 45 to rotate relative to the brush head housing 41, and the rotating bristle component 45 cleans the user's teeth.

[0070] In some embodiments of this application, the transmission assembly 43 includes: an adapter 431, a rotating shaft 432, and a reversing assembly 44. The adapter 431 is rotatably mounted on the brush head housing 41, and a insertion slot 411 is disposed on the adapter 431. The rotating shaft 432 is detachably mounted on the adapter 431, and the rotating shaft 432 rotates synchronously with the adapter 431. The reversing assembly 44 connects the bristle assembly 45 and the rotating shaft 432. During the rotation of the rotating shaft 432, the reversing assembly 44 drives the bristle assembly 45 to rotate.

[0071] During the rotation of the drive unit 21 and the transmission assembly 43 within the brush head housing 41, the drive unit 21 drives the adapter 431 to rotate, which in turn drives the rotating shaft 432 to rotate. To achieve a good cleaning effect and make the electric toothbrush 10 more convenient to use, the rotation axis of the bristle assembly 45 is often perpendicular to the rotation axis of the drive unit 21. By changing the direction of power transmission through the reversing assembly 44, the drive unit 21 can smoothly drive the bristle assembly 45 to rotate, thereby achieving a good cleaning effect. Connecting the drive unit 21 and the rotating shaft 432 through the adapter 431 reduces the length of the rotating shaft 432, thus reducing the risk of deformation. Furthermore, the adapter 431 reduces the cushioning effect on the movement of the drive unit 21, making the operation of the electric toothbrush 10 smoother and reducing its failure rate.

[0072] In some embodiments of this application, the rotating shaft 432 is partially inserted into the adapter 431, and the rotating shaft 432 and the adapter 431 are interference-fitted.

[0073] The rotating shaft 432 and the adapter 431 are fitted with an interference fit, which allows the adapter 431 to drive the rotating shaft 432 to rotate through friction. The structure is simple and the connection is reliable.

[0074] In some applications in this city, the adapter 431 is made of rubber and has an adapter hole. The rotating shaft 432 is partially inserted into the adapter hole using an interference fit. This allows the adapter 431 to drive the rotating shaft 432 to rotate through friction, resulting in a simple structure and reliable connection. Rubber provides sufficient structural strength and a high coefficient of friction, effectively reducing the risk of slippage between the rotating shaft 432 and the adapter 431, ensuring reliable energy transmission, and making the operation of the electric toothbrush 10 more reliable.

[0075] In some embodiments of this application, a fixed bushing 42 is installed inside the brush head housing 41. The fixed bushing 42 is relatively fixed to the brush head housing 41. The fixed bushing 42 is rotatably connected to the rotating shaft 432. The fixed bushing 42 is located near the reversing assembly 44.

[0076] The relative rotation between the fixed bushing 42 and the rotating shaft 432 serves two purposes: firstly, the fixed bushing 42 positions and restricts the rotating shaft 432, making its rotation more stable; secondly, it prevents friction between the rotating shaft 432 and the brush head housing 41, reducing wear between them, lowering the failure rate of the electric toothbrush 10, and ensuring the reliability of the electric toothbrush 10 structure.

[0077] In some embodiments of this application, the inner wall of the brush head housing 41 has a limiting groove 413, and the outer wall of the fixing bushing 42 has a limiting protrusion 421. When the fixing bushing 42 is installed on the brush head housing 41, the limiting protrusion 421 is engaged in the limiting groove 413 to prevent relative rotation between the fixing bushing 42 and the brush head housing 41.

[0078] During the process of installing the fixed bushing 42 into the brush head housing 41, the fixed bushing 42 is pushed into the brush head housing 41, thereby causing the limiting protrusion 421 to engage in the limiting groove 413. The limiting protrusion 421 is limited by the side wall of the limiting groove 413, thereby preventing the fixed bushing 42 from rotating relative to the brush head housing 41. This prevents the fixed bushing 42 from rotating with the rotating shaft 432, improves the reliability of the rotation of the rotating shaft 432, and makes the rotation of the rotating shaft 432 more stable.

[0079] In some embodiments of this application, the outer wall of the rotating shaft 432 is provided with an annular groove 433, and the inner wall of the fixed bushing 42 is provided with a protrusion 422. When the rotating shaft 432 passes through the fixed bushing 42, the protrusion 422 is engaged in the annular groove 433, so that the rotating shaft 432 can rotate relative to the fixed bushing 42, and the rotating shaft 432 and the fixed bushing 42 are prevented from moving in the direction of the rotation center axis of the rotating shaft 432.

[0080] In some embodiments of this application, a limiting ring 434 is provided on the outer wall of the rotating shaft 432, and the central axis of the limiting ring 434 is coaxial with the rotation center axis of the rotating shaft 432. One side of the limiting ring 434 abuts against the adapter 431, and the other side of the limiting ring 434 abuts against the fixed bushing 42.

[0081] By having one side of the limiting ring 434 abut against the adapter 431 and the other side of the limiting ring 434 abut against the fixed bushing 42, the adapter 431 and the fixed bushing 42 limit the rotation of the rotating shaft 432 in the direction of the rotation center axis, thereby preventing the rotating shaft 432 from moving in the direction of the rotation center axis.

[0082] In some embodiments of this application, the reversing assembly 44 includes a first bevel gear 441 and a second bevel gear 443. The first bevel gear 441 is mounted on the end of the rotating shaft 432 and rotates synchronously with the rotating shaft 432. The second bevel gear 443 is connected to the bristle assembly 45 and rotates synchronously with the bristle assembly 45, and the second bevel gear 443 meshes with the first bevel gear 441.

[0083] Both the first bevel gear 441 and the second bevel gear 443 are bevel gears, which can effectively change the transmission direction, converting the longitudinal rotation of the drive device 21 into the lateral rotation of the bristle assembly 45, thereby achieving a good teeth cleaning effect and making the teeth cleaning process more convenient.

[0084] In some embodiments of this application, the first bevel gear 441 is provided with a snap-fit ​​groove 442, and the end of the rotating shaft 432 is inserted into the snap-fit ​​groove 442. The cross-sectional shape of the end of the rotating shaft 432 is adapted to the cross-sectional shape of the snap-fit ​​groove 442, and the cross-sectional shape of the snap-fit ​​groove 442 is configured to be non-circular.

[0085] The first bevel tooth 441 can rotate synchronously with the rotating shaft 432 by engaging with the end of the snap-fit ​​groove 442, thereby preventing slippage between the first bevel tooth 441 and the rotating shaft 432 and improving the reliability of the structure in the electric toothbrush 10.

[0086] In some embodiments of this application, the bristle assembly 45 has a linkage protrusion 458 protruding on the side facing the second bevel tooth 443, and the second bevel tooth 443 has a linkage groove 444 on the side facing the bristle assembly 45. The linkage groove 444 is adapted to the linkage protrusion 458, and the cross section of the linkage protrusion 458 is rotated to be non-circular.

[0087] The interaction between the linkage protrusion 458 and the linkage groove 444 enables the bristle assembly 45 to rotate synchronously with the second bevel tooth 443, preventing slippage between the second bevel tooth 443 and the bristle assembly 45 and improving the reliability of the structure in the electric toothbrush 10.

[0088] In some embodiments of this application, the bristle assembly 45 includes a bristle disc assembly 451 and a screw member 453. The bristle disc assembly 451 has a bristle bundle on the side opposite to the brush head housing 41, and a through hole 452 is provided at the rotation center of the bristle disc assembly 451. One end of the screw member 453 has a limiting portion 454, the size of which is larger than the diameter of the through hole 452. The screw member 453 connects the bristle disc assembly 451 and the second bevel gear 443 in series, and then is threadedly connected to the brush head housing 41 through the end away from the limiting portion 454.

[0089] The brush plate assembly 451 is limited by the screw 453, so that the brush plate assembly 451 can rotate around the screw 453 as the axis. This enables the brush plate assembly 451 to rotate via the drive device 21 and the transmission assembly 43, thereby achieving the function of teeth cleaning.

[0090] In some embodiments of this application, a metal nut 46 is fixedly installed on the brush head housing 41, and the brush head housing 41 is threadedly connected to the screw member 453 through the metal nut 46.

[0091] The metal nut 46 and the screw 453 cooperate with each other to prevent the screw 453 from loosening, thereby improving the reliability and stability of the electric toothbrush 10 structure.

[0092] In some embodiments of this application, the bristle assembly 45 further includes a shaft sleeve 455. The shaft sleeve 455 is sleeved on the screw member 453, one end of the shaft sleeve 455 abuts against the limiting portion 454, and the other end of the shaft sleeve 455 away from the limiting portion 454 abuts against the metal nut 46.

[0093] During the rotation of the brush disc assembly 451, by placing the shaft assembly 455 between the screw 453 and the brush disc assembly 451, friction between the brush disc assembly 451 and the screw 453 is avoided, the wear of the brush disc assembly 451 is reduced, and the stability and reliability of the rotation of the brush disc assembly 451 are improved.

[0094] In some embodiments of this application, the bristle assembly 45 further includes a seal 456. The seal 456 is disposed between the second bevel gear 443 and the bristle disc assembly 451, with both sides of the seal 456 abutting against the second bevel gear 443 and the bristle disc assembly 451 respectively to form a seal. The seal 456 is provided with a socket 457, through which a shaft assembly 455 passes, with the socket 457 and the shaft assembly 455 being interference-fitted to form a seal.

[0095] The bristle assembly 45 is sealed by the sealant 456, thereby reducing the risk of water entering the electric toothbrush 10 during the teeth cleaning process and improving the reliability of the electric toothbrush 10.

[0096] On the other hand, this application provides a vibrating electric toothbrush 10, comprising: a vibrating toothbrush head 302, an adapter 35, and a toothbrush handle 20. One end of the vibrating toothbrush head 302 is provided with bristles, and the end of the vibrating toothbrush head 302 away from the bristles is provided with an adapter groove 31. The adapter 35 is installed in the adapter groove 31 and operates synchronously with the vibrating toothbrush head 302. The adapter 35 is provided with a slot 351. The toothbrush handle 20 is connected to the end of the vibrating toothbrush head 302 away from the bristles. The toothbrush handle 20 is equipped with a drive device 21, which drives the vibrating toothbrush head 302 to vibrate relative to the toothbrush handle 20. The drive device 21 is provided with a drive shaft 22, the drive shaft 22 is provided with a slot 23, and the inner wall of the slot 351 is provided with a locking portion 352. After the drive shaft 22 is inserted into the slot 351, the locking part 352 is locked into the slot 23 to prevent the vibrating toothbrush head 302 from detaching from the toothbrush handle 20.

[0097] During the operation of the electric toothbrush 10, the connection between the vibrating toothbrush head 302 and the toothbrush handle 20 is transferred through the adapter 35, avoiding the direct connection between the drive device 21 and the vibrating toothbrush head 302. This allows the adapter 35 to act as a buffer between the vibrating toothbrush head 302 and the toothbrush handle 20, reducing the impact of vibration on the connection between the toothbrush handle 20 and the vibrating toothbrush head 302, ensuring the reliability of the connection between the vibrating toothbrush head 302 and the toothbrush handle 20, and reducing the risk of the electric toothbrush 10 becoming loose or stuck during use. During the process of connecting the vibrating toothbrush head 302 and the toothbrush handle 20, one end of the drive shaft 22 of the drive device 21 installed in the toothbrush handle 20 is inserted into the slot 351 of the adapter 35, and the snap-fit ​​part 352 protruding from the inner wall of the slot 351 is snapped into the slot 23 of the drive shaft 22. The snap-fit ​​part 352 is then limited by the inner wall of the slot 23, thereby preventing the toothbrush head and the toothbrush handle 20 from separating and improving the reliability of the connection between the toothbrush head and the toothbrush handle 20.

[0098] In some embodiments of this application, the inner wall of the adapter groove 31 is provided with a first positioning groove 32, and the outer wall of the adapter 35 is provided with a first positioning protrusion 355. The first positioning protrusion 355 is adapted to the first positioning groove 32 so that the adapter 35 and the vibrating toothbrush head 302 operate synchronously. With reference to the longitudinal central axis of the vibrating toothbrush head 302, the first positioning groove 32 is on the same side as the bristles.

[0099] Through the cooperation between the first positioning groove 32 and the first positioning protrusion 355, on the one hand, the adapter 35 and the vibrating toothbrush head 302 move synchronously, so that the vibrating toothbrush head 302 can be smoothly driven to vibrate during the rotation of the adapter 431 driven by the drive device 21, thereby achieving a good teeth cleaning effect; on the other hand, the vibrating toothbrush head 302 is positioned so that the bristles of the vibrating toothbrush head 302 face the preset direction, so that the user can use the electric toothbrush 10 more conveniently.

[0100] In some embodiments of this application, a second positioning groove 33 is provided on both sides of the inner wall of the adapter groove 31, and a second positioning protrusion 356 is provided on both sides of the adapter 35. The second positioning groove 33 and the second positioning protrusion 356 are adapted to each other. Wherein, after the adapter 35 is installed into the adapter groove 31, the second positioning protrusion 356 is engaged in the second positioning groove 33.

[0101] The interaction between the second positioning groove 33 and the second positioning protrusion 356 further positions the vibrating toothbrush head 302 and improves the connection strength between the adapter 35 and the vibrating toothbrush head 302, thereby enhancing the structural stability and reliability of the electric toothbrush 10.

[0102] In some embodiments of this application, the second positioning groove 33 is located on both sides of the first positioning groove 32.

[0103] By positioning the second positioning groove 33 on both sides of the first positioning groove 32, the force on the adapter 35 and the vibrating toothbrush head 302 is more even, thereby further improving the structural stability and reliability of the electric toothbrush 10.

[0104] In some embodiments of this application, the size of the first positioning groove 32 is larger than the size of the second positioning groove 33.

[0105] By making the size of the first positioning groove 32 larger than the size of the second positioning groove 33, the second positioning protrusion 356 enters the second positioning groove 33. The first positioning protrusion 355 guides the first positioning groove 32, thereby enabling the adapter 35 and the vibrating toothbrush head 302 to be combined more smoothly, improving the ease of assembly of the electric toothbrush 10.

[0106] In some embodiments of this application, the width of the first positioning groove 32 near the bristle end is smaller than its width away from the bristle end.

[0107] By making the width of the first positioning groove 32 closer to the bristles smaller than the width of the end farther from the bristles, the first positioning protrusion 355 can enter the first positioning groove 32 more smoothly, thereby further improving the ease of assembly of the electric toothbrush 10.

[0108] In some embodiments of this application, the drive shaft 22 is provided with a first anti-misoperation surface 24 and a second anti-misoperation surface 25, and the distance between the first anti-misoperation surface 24 and the end face of the drive shaft 22 is greater than the distance between the second anti-misoperation surface 25 and the end face of the drive shaft 22. The inner wall of the slot 351 is provided with a first anti-misoperation portion 353 and a second anti-misoperation portion 354. When the drive shaft 22 is inserted into the slot 351, the first anti-misoperation surface 24 abuts against the first anti-misoperation portion 353, and the second anti-misoperation surface 25 abuts against the second anti-misoperation portion 354.

[0109] By abutting the first anti-misalignment surface 24 against the first anti-misalignment part 353 and the second anti-misalignment surface 25 against the second anti-misalignment part 354, the adapter 35 can rotate synchronously with the drive shaft 22, thereby smoothly enabling the drive device 21 to drive the vibrating toothbrush head 302 to vibrate, thus achieving a good teeth cleaning effect. By making the distance between the first anti-misalignment surface 24 and the end face of the drive shaft 22 greater than the distance between the second anti-misalignment surface 25 and the end face of the drive shaft 22, incorrect installation orientation of the adapter 35 is prevented, achieving the technical effect of preventing misalignment.

[0110] In some embodiments of this application, the first anti-fouling surface 24 and the second anti-fouling surface 25 are located on both sides of the central axis of the drive shaft 22.

[0111] By positioning the first anti-fouling surface 24 and the second anti-fouling surface 25 on opposite sides of the central axis of the drive shaft 22, the force on the adapter 35 and the drive shaft 22 is made more uniform, thus ensuring the reliability of the electric toothbrush 10 structure.

[0112] In some embodiments of this application, both the first anti-fouling surface 24 and the second anti-fouling surface 25 are configured as inclined surfaces.

[0113] By configuring both the first anti-foolproof surface 24 and the second anti-foolproof surface 25 as inclined surfaces, the machining accuracy of the drive shaft 22 and the adapter 35 is reduced.

[0114] In some embodiments of this application, the angle between the first anti-fouling surface 24 and the first side surface of the drive shaft 22 is configured as an obtuse angle, and the angle between the second anti-fouling surface 25 and the second side surface of the drive shaft 22 is configured as an obtuse angle.

[0115] By configuring the angle between the first anti-fouling surface 24 and the first side of the drive shaft 22 as an obtuse angle, and configuring the angle between the second anti-fouling surface 25 and the second side of the drive shaft 22 as an obtuse angle, the first anti-fouling surface 24 can smoothly abut against the first anti-fouling part 353, and the second anti-fouling surface 25 can smoothly abut against the second anti-fouling part 354.

[0116] In some embodiments of this application, the inner wall of the adapter groove 31 is provided with a limiting ring 434 groove 34, and the outer wall of the adapter 35 is provided with a limiting ring 434-shaped protrusion 357, which is adapted to the limiting ring 434 groove 34. When the adapter 35 is installed into the adapter groove 31, the limiting ring 434-shaped protrusion 357 engages within the limiting ring 434 groove 34 to prevent the adapter 35 from moving along the central axis of the adapter groove 31.

[0117] Please see Figures 1 to 2In some embodiments of this application, a compatible electric toothbrush 10 is provided, including: a toothbrush handle 20, a first toothbrush head 301, and a second toothbrush head 401. The toothbrush handle 20 is equipped with a drive device 21, which has a drive shaft 22 and a slot 23. The first toothbrush head 301 has a slot 351, and the inner wall of the slot 351 has a protruding engaging portion 352 that matches the slot 23. The second toothbrush head 401 has an insertion groove 411, and the inner wall of the insertion groove 411 has a protruding engaging protrusion 412 that matches the slot 23. When the toothbrush handle 20 is fitted with the first toothbrush head 301, after the drive shaft 22 is inserted into the slot 351, the engaging portion 352 engages with the slot 23 to prevent the first toothbrush head 301 from detaching from the toothbrush handle 20. When the toothbrush handle 20 is fitted with the second toothbrush head 401, after the drive shaft 22 is inserted into the insertion slot 411, the locking protrusion 412 is engaged in the slot 23 to prevent the second toothbrush head 401 from detaching from the toothbrush handle 20. The first toothbrush head 301 and the second toothbrush head 401 are fitted with different operating modes.

[0118] When the toothbrush handle 20 is fitted with the first toothbrush head 301, after the drive shaft 22 is inserted into the slot 351, the locking part 352 engages with the slot 23 to prevent the first toothbrush head 301 from detaching from the toothbrush handle 20. After the drive shaft 22 is inserted into the insertion slot 411, the locking protrusion 412 engages with the slot 23 to prevent the second toothbrush head 401 from detaching from the toothbrush handle 20. The first toothbrush head 301 and the second toothbrush head 401 are fitted with different operating modes. In this way, the electric toothbrush 10 can be compatible with different toothbrush heads. When the user needs to use different teeth cleaning modes, they can simply replace the corresponding toothbrush head to meet their teeth cleaning needs, reducing living costs and improving the user experience.

[0119] In some embodiments of this application, the first toothbrush head 301 is configured as a vibrating toothbrush head 302, which is adapted to a vibration working mode. The second toothbrush head 401 is configured as a rotary toothbrush head 402, which is adapted to a rotation working mode.

[0120] When the electric toothbrush 10 needs to be set to a vibration cleaning mode, the toothbrush handle 20 is adapted to the first toothbrush head 301, thereby enabling the electric toothbrush 10 to perform a vibration cleaning function. When the electric toothbrush 10 needs to be set to a rotation cleaning mode, the toothbrush handle 20 is adapted to the second toothbrush head 401, thereby enabling the electric toothbrush 10 to perform a rotation cleaning function.

[0121] In some embodiments of this application, one end of the first toothbrush head 301 is provided with bristles, and the slot 351 is provided at the end of the first toothbrush head 301 away from the bristles. The driving device 21 is used to drive the first toothbrush head 301 to reciprocate within a set angle range to achieve the effect of vibration of the first toothbrush head 301.

[0122] In some embodiments of this application, an adapter groove 31 is provided at the end of the first toothbrush head 301 away from the bristles. An adapter 35 is fixedly installed in the adapter groove 31, and a slot 351 is provided in the adapter 35.

[0123] The adapter 35 is used to connect the first toothbrush head 301 and the toothbrush handle 20, avoiding direct connection between the drive device 21 and the vibrating toothbrush head 302. This allows the adapter 35 to act as a buffer between the vibrating toothbrush head 302 and the toothbrush handle 20, reducing the impact of vibration on the connection between the toothbrush handle 20 and the vibrating toothbrush head 302. This ensures the reliability of the connection between the vibrating toothbrush head 302 and the toothbrush handle 20, and reduces the risk of the electric toothbrush 10 becoming loose or stuck during use.

[0124] In some embodiments of this application, the second toothbrush head 401 includes a brush head housing 41 and a bristle assembly 45. The bristle assembly 45 is rotatably mounted on the brush head housing 41. A drive device 21 is used to drive the bristle assembly 45 to rotate relative to the brush head housing 41 to achieve a rotating teeth-cleaning effect.

[0125] In some embodiments of this application, the second toothbrush head 401 further includes a transmission assembly 43, through which the drive device 21 drives the bristle assembly 45 to rotate. The transmission assembly 43 includes an adapter 431, a rotating shaft 432, and a reversing assembly 44. The adapter 431 is rotatably mounted on the brush head housing 41, and a insertion slot 411 is disposed on the adapter 431. The rotating shaft 432 is detachably mounted on the adapter 431, and rotates synchronously with the adapter 431. The reversing assembly 44 connects the bristle assembly 45 and the rotating shaft 432. During the rotation of the rotating shaft 432, the reversing assembly 44 drives the bristle assembly 45 to rotate.

[0126] During the rotation of the drive unit 21 and the transmission assembly 43 within the brush head housing 41, the drive unit 21 drives the adapter 431 to rotate, which in turn drives the rotating shaft 432 to rotate. To achieve a good cleaning effect and make the electric toothbrush 10 more convenient to use, the rotation axis of the bristle assembly 45 is often perpendicular to the rotation axis of the drive unit 21. By changing the direction of power transmission through the reversing assembly 44, the drive unit 21 can smoothly drive the bristle assembly 45 to rotate, thereby achieving a good cleaning effect. Connecting the drive unit 21 and the rotating shaft 432 through the adapter 431 reduces the length of the rotating shaft 432, thus reducing the risk of deformation. Furthermore, the adapter 431 reduces the cushioning effect on the movement of the drive unit 21, making the operation of the electric toothbrush 10 smoother and reducing its failure rate.

[0127] In some embodiments of this application, the electric toothbrush 10 further includes an identification module 50 and a control module 60. The identification module 50 is used to identify the first toothbrush head 301 and the second toothbrush head 401. The control module 60 is used to control the electric toothbrush 10 according to the identification result of the identification module 50.

[0128] The identification module 50 identifies the first toothbrush head 301 and the second toothbrush head 401, thereby enabling the control module 60 to control the working parameters of the electric toothbrush 10 according to the type of toothbrush head installed on the toothbrush handle 20, and realize the function of automatically switching working modes of the electric toothbrush 10.

[0129] In some embodiments of this application, the identification module 50 includes an identification sensor 51. One of the first toothbrush head 301 and the second toothbrush head 401 is provided with an identification element 52, which can be identified by the identification sensor 51.

[0130] In some embodiments of this application, the identification sensor 51 is configured as a Hall sensor, and the identification element 52 is configured as a magnet.

[0131] In some embodiments of this application, the toothbrush handle 20 is provided with a recognition groove 53, and the second toothbrush head 401 is provided with a recognition protrusion 54, which is adapted to the recognition groove 53. A recognition sensor 51 is disposed at a position corresponding to the recognition groove 53, and a recognition element 52 is fixedly installed at the recognition protrusion 54. Specifically, when the second toothbrush head 401 is installed on the toothbrush handle 20, the recognition protrusion 54 is embedded in the recognition groove 53.

[0132] When the identification protrusion 54 and the identification groove 53 cooperate, it indicates that the current toothbrush head is the second toothbrush head 401; otherwise, it is the first toothbrush head 301. Thus, the cooperation between the identification protrusion 54 and the identification groove 53 allows for initial identification of the first toothbrush head 301 and the second toothbrush head 401. By placing the identification element 52 on the identification protrusion 54 and positioning the identification sensor 51 in a position corresponding to the identification groove 53, the identification element 52 is positioned through the cooperation between the identification protrusion 54 and the identification groove 53. This allows the identification sensor 51 to successfully identify the identification element 52, improving the efficiency, reliability, and accuracy of the identification process.

[0133] In the description of this specification, references to terms such as "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the described embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0134] Furthermore, the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A compatible electric toothbrush, characterized by comprising: include: A toothbrush handle, wherein a drive device is installed on the toothbrush handle, the drive device is provided with a drive shaft, and the drive shaft is provided with a slot; The first toothbrush head has a slot, and the inner wall of the slot has a protruding snap-fit ​​part that is adapted to the slot. The second toothbrush head is provided with a insertion groove, and the inner wall of the insertion groove is provided with a snap-fit ​​protrusion, which is adapted to the snap-fit ​​groove; When the toothbrush handle is adapted to the first toothbrush head, after the drive shaft is inserted into the slot, the locking part is engaged in the slot to prevent the first toothbrush head from detaching from the toothbrush handle. When the toothbrush handle is adapted to the second toothbrush head, after the drive shaft is inserted into the insertion slot, the locking protrusion is locked into the slot to prevent the second toothbrush head from detaching from the toothbrush handle. The first toothbrush head and the second toothbrush head are adapted to different working modes.

2. The compatible electric toothbrush according to claim 1, wherein The first toothbrush head is configured as a vibrating toothbrush head, and the vibrating toothbrush head is adapted to a vibration working mode; The second toothbrush head is configured as a rotary toothbrush head, which is adapted to a rotary working mode.

3. The compatible electric toothbrush according to claim 1, wherein One end of the first toothbrush head is provided with bristles, and the slot is provided at the end of the first toothbrush head away from the bristles; The driving device is used to drive the first toothbrush head to swing back and forth within a set angle range to achieve the effect of vibration of the first toothbrush head.

4. The compatible electric toothbrush according to claim 3, wherein The first toothbrush head has an adapter groove at the end away from the bristles; An adapter is fixedly installed in the adapter groove, and the slot is located in the adapter.

5. The compatible electric toothbrush according to claim 1, wherein The second toothbrush head includes: Brush head housing, A bristle assembly, which is rotatably mounted on the brush head housing; The driving device is used to drive the bristle assembly to rotate relative to the brush head housing.

6. The compatible electric toothbrush according to claim 5, wherein The second toothbrush head also includes a transmission assembly, through which the drive device drives the bristle assembly to rotate; The transmission assembly includes: An adapter is rotatably mounted on the brush head housing, and a connector slot is provided in the adapter. A rotating shaft is detachably mounted on the adapter, and the rotating shaft rotates synchronously with the adapter; A reversing assembly, wherein the reversing assembly connects the bristle assembly and the rotating shaft; During the rotation of the rotating shaft, the bristle assembly is driven to rotate by the reversing component.

7. The compatible electric toothbrush according to claim 1, wherein The electric toothbrush also includes: The identification module is used to identify the first toothbrush head and the second toothbrush head; A control module is provided, which controls the electric toothbrush based on the recognition result of the recognition module.

8. The compatible electric toothbrush according to claim 7, wherein The identification module includes an identification sensor; One of the first toothbrush head and the second toothbrush head is provided with an identification element, which can be identified by the identification sensor.

9. The compatible electric toothbrush according to claim 8, characterized in that, The identification sensor is configured as a Hall sensor, and the identification element is configured as a magnet.

10. The compatible electric toothbrush according to claim 8, wherein The toothbrush handle is provided with a recognition groove, and the second toothbrush head is provided with a recognition protrusion, the recognition protrusion being adapted to the recognition groove; The recognition sensor is arranged at a position corresponding to the recognition groove, and the recognition member is fixedly arranged at the recognition protrusion; When the second toothbrush head is arranged on the toothbrush handle, the recognition protrusion is embedded in the recognition groove.

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