Electric toothbrush

Abstract

The utility model relates to the technical field of toothbrushes, and discloses an electric toothbrush which comprises a brush head assembly, a driving assembly, a grab handle and an inclined positioning assembly, the grab handle is provided with a cavity and an output hole which are communicated with each other, the driving assembly comprises a driver, the inclined positioning assembly is connected in the cavity, the inclined positioning assembly is connected with the driver so that the driver can incline by 1-10 degrees relative to the central axis of the grab handle, and the output end of the driver penetrates through the output hole to be connected with the brush head assembly. And the driver is linearly connected with the brush head assembly. By arranging the inclined positioning assembly, it is effectively guaranteed that the driver can conduct linear output on the brush head, inclined-angle power output of the driver is achieved, and the output effect of the driver is prevented from being affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of toothbrushes, and in particular relates to an electric toothbrush. Background Art

[0002] Electric toothbrushes are becoming increasingly popular in the market. They mainly rely on the rapid rotation or vibration of the electric motor to make the brush head vibrate at high frequency, instantly breaking down the toothpaste into fine foam and deeply cleaning the gaps between teeth. At the same time, the vibration of the bristles can promote blood circulation in the oral cavity and have a massage effect on the gum tissue.

[0003] In order to make the toothbrush more ergonomic when brushing teeth, the brush head of the current electric toothbrush is usually tilted, and the driver is installed vertically in the handle, so that the driver cannot output the brush head well, which affects the output effect of the driver to a certain extent. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the utility model provides an electric toothbrush.

[0005] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0006] An electric toothbrush comprises: a brush head assembly, a driving assembly, a handle and a tilt positioning assembly;

[0007] The handle has a cavity and an output hole that are interconnected, the drive assembly includes a driver, the tilt positioning assembly is connected in the cavity, the tilt positioning assembly is connected to the driver so that the driver is tilted 1° to 10° relative to the central axis of the handle, the output end of the driver passes through the output hole and is connected to the brush head assembly, and the driver and the brush head assembly are connected in a straight line.

[0008] In some embodiments, the tilt positioning assembly includes a plurality of beveled arc ribs, and the plurality of beveled arc ribs are connected to the side wall of the cavity.

[0009] In some embodiments, the brush head assembly is tilted 2° to 5° relative to the central axis of the handle.

[0010] In some embodiments, the driving assembly also includes a charging component, and a bracket for positioning and installing the driver and the charging component is provided in the cavity, and the bracket is respectively engaged with the driver and the charging component.

[0011] In some embodiments, the tilt positioning assembly is installed in the bracket, and at least two positioning members are arranged in the bracket, and the two positioning members are staggered to fasten the driver.

[0012] In some embodiments, a charging port is provided on the outer side of the handle, and a charging seat for charging the charging device is provided on the side wall of the charging port.

[0013] In some embodiments, the charging base is connected with a waterproof seal, and the waterproof seal is interference fit with the handle and the charging base.

[0014] In some embodiments, the output end of the driver is configured as a shaft, the brush head assembly includes a connector, bristles, and a brush handle having a mounting cavity, the bristles are mounted on the brush handle, the connector is connected to the mounting cavity, and the connector is snap-fitted to the shaft.

[0015] In some embodiments, a matching groove that matches with the shaft body is opened in the connecting member, and the shaft body and the matching groove are wedge-shaped.

[0016] In some embodiments, the handle is provided with a water-isolating portion for preventing water from entering the output hole, and the brush handle is arranged around and abuts against the outer periphery of the water-isolating portion; and / or

[0017] It also includes a driving seal, which is arranged in an interference fit with the side wall of the output hole and the outer peripheral side of the shaft body; and / or

[0018] A bottom shell is mounted on one end of the handle away from the brush head assembly. A sealing ring is arranged on the bottom shell. The sealing ring is interference-fitted with the side wall of the cavity.

[0019] In summary, the utility model has at least the following benefits:

[0020] The utility model provides an electric toothbrush, which can be installed with a tilted positioning component, so that the driver can be tilted in the cavity, and then the driver and the brush head assembly are connected in a straight line, so that the brush head assembly and the driver are tilted at a specific angle, so that it is convenient to brush teeth at an ergonomic angle, making brushing more labor-saving and more thorough. Among them, by providing a tilted positioning component, it is effectively guaranteed that the driver can output the brush head in a straight line, and the driver can output power at an oblique angle to avoid affecting the output effect of the driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of an electric toothbrush according to an embodiment of the present application;

[0022] Figure 2 is a cross-sectional schematic diagram of an electric toothbrush according to an embodiment of the present application;

[0023] Figure 3 A partial structural schematic diagram of an electric toothbrush according to an embodiment of the present application;

[0024] Figure 4 A partial structural schematic diagram of an electric toothbrush according to an embodiment of the present application;

[0025] Figure 5 This is a schematic diagram of the exploded structure of an electric toothbrush according to an embodiment of the present application.

[0026] Markings in the figure:

[0027] 10. Electric toothbrush;

[0028] 100, brush head assembly; 110, connecting piece; 111, matching groove; 120, brush handle; 121, mounting cavity; 130, bristles;

[0029] 200, handle; 210, cavity; 211, slot; 212, limiter; 220, output hole; 221, drive seal; 230, bracket; 231, positioning member; 232, abutment block; 233, clamping block; 234, limiter matching portion; 240, water-isolating portion;

[0030] 300, tilt positioning assembly;

[0031] 400, driving assembly; 410, driver; 411, shaft; 420, charging component;

[0032] 500, bottom shell; 510, sealing ring; 520, clamping block;

[0033] 600, charging stand; 610, waterproof seal;

[0034] 700, PCB board; 710, indicator light; 720, button. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0037] In the following embodiments, reference is made to Figure 1 In the coordinate system, the direction of the X-axis arrow is right, and the direction of the Y-axis arrow is up.

[0038] Embodiment 1:

[0039] like Figures 1 to 5 As shown, in this embodiment, an electric toothbrush includes: a brush head assembly 100, a drive assembly 400, a handle 200 and a tilt positioning assembly 300; the handle 200 has a cavity 210 and an output hole 220 that are interconnected, the drive assembly 400 includes a driver 410, the tilt positioning assembly 300 is connected in the cavity 210, the tilt positioning assembly 300 is connected to the driver 410, so that the driver 410 is tilted 1° to 10° compared to the central axis of the handle 200, the output end of the driver 410 passes through the output hole 220 and is connected to the brush head assembly 100, and the driver 410 is connected to the brush head assembly 100 in a straight line.

[0040] Specifically, the electric toothbrush 10 is a sweeping type, the upper end of the handle 200 is set as a hollow hemisphere, the lower end is set as a hollow cylinder, and the upper end is provided with an output hole 220, the hollow part of the upper end and the hollow part of the lower end of the handle 200 form a cavity 210, and the output hole 220 is connected with the cavity 210. The tilt positioning assembly 300 is fixedly connected to the cavity 210, and the tilt positioning assembly 300 fixes the driver 410 in the cavity 210 so that the driver 410 is tilted in the cavity 210, and the upper end of the driver 410 is locked by a screw to ensure that the driver 410 does not move axially, and the output end of the driver 410 drives the brush head assembly 100 to move synchronously. Among them, the tilt angle of the driver 410 and the brush head assembly 100 shall be based on actual production requirements. For example, the driver 410 and the brush head assembly 100 are tilted 1° relative to the central axis of the handle 200; for another example, the driver 410 and the brush head assembly 100 are tilted 5° relative to the central axis of the handle 200; for another example, the driver 410 and the brush head assembly 100 are tilted 10° relative to the central axis of the handle 200.

[0041] It is worth noting that, by providing the tilt positioning assembly 300, the driver 410 can be tiltedly installed in the cavity 210, and then the driver 410 and the brush head assembly 100 are connected in a straight line, so that the brush head assembly 100 and the driver 410 are both tilted at a specific angle, so that it is convenient to brush teeth at an ergonomic assist angle, making brushing more labor-saving and more thorough. Among them, by providing the tilt positioning assembly 300, it is effectively ensured that the driver 410 can output the brush head in a straight line, realize the oblique angle output power of the driver 410, and avoid affecting the output effect of the driver 410.

[0042] Embodiment 2:

[0043] like Figure 3As shown, this embodiment is a further implementation of embodiment 1. In this embodiment, the tilt positioning assembly 300 includes a plurality of beveled arc surface ribs, and the plurality of beveled arc surface ribs are connected to the side wall of the cavity 210.

[0044] Specifically, the beveled arc surface ribs are installed around the side wall of the cavity 210, and the beveled arc surface ribs are partially inclined so that the driver 410 is installed in the cavity 210 at a corresponding angle. For example, two beveled arc surface ribs are set and installed at intervals on both ends of the driver 410. Two beveled arc surface ribs with corresponding angles to the horizontal direction are used on the driver 410 to achieve oblique angle output power of the motor; for another example, one beveled arc surface rib is set, and its width is larger; for another example, four beveled arc surface ribs are set.

[0045] In another embodiment, the tilt positioning assembly 300 is configured as a column, which is embedded in the cavity 210 and has a tilt groove inside, so that the driver 410 is tilted and installed in the cavity 210 at a corresponding angle.

[0046] In another embodiment, the tilt positioning assembly 300 is configured as a plurality of abutment bevel blocks, and the plurality of abutment bevel blocks are correspondingly fixed in the cavity 210, so that the driver 410 is installed in the cavity 210 at a corresponding tilt angle through the abutment and retention action of each abutment block.

[0047] To be more ergonomic, in some embodiments, the brush head assembly 100 is tilted 2° to 5° relative to the central axis of the handle 200 .

[0048] Specifically, by adopting an inclination angle of 2° to 5°, it is possible to achieve a more ergonomic assist angle when brushing teeth. The inclination angle of the brush head assembly 100 is subject to actual production requirements. For example, the brush head assembly 100 is inclined 2° relative to the central axis of the handle 200; for another example, the brush head assembly 100 is inclined 3.5° relative to the central axis of the handle 200; for another example, the brush head assembly 100 is inclined 5° relative to the central axis of the handle 200.

[0049] In order to facilitate the installation of the drive assembly 400, as Figure 3 , Figure 4 and Figure 5 As shown, in some embodiments, the driving assembly 400 also includes a charging component 420, and a bracket 230 for positioning and installing the driver 410 and the charging component 420 is provided in the cavity 210, and the bracket 230 is respectively engaged with the driver 410 and the charging component 420.

[0050] Specifically, the bracket 230 is installed on the side wall of the cavity 210, and the bracket 230 is set as a hollow semi-cylindrical bracket. The driver 410 is clamped in the upper end of the bracket 230; the charging component 420 is installed in the lower end of the bracket 230, and the lower end of the bracket 230 is protruding inward and is provided with at least two abutment blocks 232, so that the charging component 420 can be clamped by the abutment blocks 232 to prevent the charging component 420 from falling off. The abutment blocks 232 are realized by using a plug-in collision on the mold. Among them, the driver 410 is set as a motor, and the charging component 420 is set as a battery.

[0051] like Figure 4 and Figure 5 As shown, in another embodiment, a limiting portion 212 is provided on the side wall of the cavity 210, and a limiting matching portion 234 matching with the limiting portion 212 is provided on the outer peripheral side of the bracket 230, and the limiting matching portion 234 is engaged with the limiting portion 212 to limit the bracket 230. To prevent the bracket 230 from rotating easily in the cavity 210, the limiting portion 212 is provided as a guide rail, the limiting matching portion 234 is provided as a protrusion, and both the limiting matching portion 234 and the limiting portion 212 are provided as two.

[0052] In order to facilitate the installation of the electric toothbrush 10, Figure 3 As shown, in some embodiments, the tilt positioning assembly 300 is installed in the bracket 230 , and at least two positioning members 231 are disposed in the bracket 230 , and the two positioning members 231 are staggered to fasten the driver 410 .

[0053] Specifically, by installing the tilt positioning assembly 300 on the bracket 230, that is, two bevel arc ribs are installed in the bracket 230. In this way, the tilt angle of the driver 410 can be better limited. The upper end of the bracket 230 is protruding inward and is provided with at least two positioning members 231. The two positioning members 231 are set in a staggered shape, that is, one positioning member 231 is installed on the bracket 230 along the Y-axis direction, and the other positioning member 231 is installed on the bracket 230 along the X-axis direction. In this way, the precise positioning of the driver 410 can be achieved to ensure that the driver 410 will not deflect, and the staggered setting can effectively simplify the product mold structure, thereby facilitating demoulding. Among them, every two positioning members 231 are arranged on the same side, and every two positioning members 231 form a positioning group, and the positioning group is set to two. The two positioning groups are relatively arranged on both sides of the driver 410 to tightly position the two sides of the driver 410, and the positioning member 231 is optional but not limited to the positioning ribs.

[0054] In another embodiment, the tilt positioning assembly 300 is installed on the side wall of the cavity 210 and staggered with the bracket 230. The tilt positioning assembly 300 cooperates with the internal structure of the bracket 230 to fix the driver 410 in the bracket 230 at an angle.

[0055] In order to facilitate the connection between the drive assembly 400 and the brush head assembly 100, as shown in FIG. Figure 2 and Figure 5 As shown, in some embodiments, the output end of the driver 410 is set to a shaft 411, and the brush head assembly 100 includes a connector 110, bristles 130 and a brush handle 120 having a mounting cavity 121, the bristles 130 are mounted on the brush handle 120, the connector 110 is connected to the mounting cavity 121, and the connector 110 and the shaft 411 are snap-fitted together.

[0056] Specifically, the lower end of the brush handle 120 has an installation cavity 121, and the connecting member 110 and the side wall of the installation cavity 121 are optionally but not limited to snap-fit ​​connection, and the bottom end of the connecting member 110 is provided with a groove, and the upper end of the driver 410 is protrudingly provided with a shaft 411, and the top of the shaft 411 is snap-fitted with the side wall of the groove through a two-way buckle. In this way, the driver 410 is firmly connected to the brush head assembly 100, so that the driver 410 can drive the brush head assembly 100 to move synchronously. Among them, the connecting member 110 is optional but not limited to a rod.

[0057] In order to facilitate the matching of the connector 110, Figure 2 and Figure 5 As shown, in some embodiments, a matching groove 111 that matches with the shaft body 411 is opened in the connecting member 110, and the shaft body 411 and the matching groove 111 are wedge-shaped.

[0058] Specifically, the upper end of the shaft body 411 is wedge-shaped, and a matching groove 111 is provided at the top of the groove body. The shape of the matching groove 111 matches therewith, so that the brush head assembly 100 and the driver 410 can be tightly matched to avoid additional matching angle errors.

[0059] Embodiment 3:

[0060] like Figure 2 , Figure 3 and Figure 5 As shown, this embodiment is a further implementation of embodiment 1 or 2. In this embodiment, a water-blocking portion 240 for preventing water from entering the output hole 220 is provided on the handle 200, and the brush handle 120 is arranged around the outer periphery of the water-blocking portion 240; and / or it also includes a drive seal 221, and the drive seal 221 is interference fit with the side wall of the output hole 220 and the outer periphery of the shaft 411; and / or the end of the handle 200 facing away from the brush head assembly 100 is cooperated with a bottom shell 500, and a sealing ring 510 is provided on the bottom shell 500, and the sealing ring 510 is interference fit with the side wall of the cavity 210.

[0061] Specifically, the waterproof components are arranged according to actual production requirements.

[0062] In one embodiment, a water-blocking portion 240 is disposed on the handle 200 to prevent water from entering the output hole 220 , and the brush handle 120 is disposed around and abuts against the outer circumference of the water-blocking portion 240 .

[0063] In this way, the water-blocking part 240 is connected around the side wall of the output hole 220, and the upper and lower ends of the water-blocking part 240 are protruding from the output hole 220, and the outer peripheral surface of the water-blocking part 240 abuts against the side wall of the mounting cavity 121. By covering the water-blocking part 240 with the brush handle 120, it is possible to prevent waste water from brushing teeth from flowing into the electric toothbrush 10 from the connection between the brush head assembly 100 and the handle 200.

[0064] In another embodiment, the electric toothbrush 10 further includes a driving seal 221 , which is arranged to be interference fit with the side wall of the output hole 220 and the outer circumference of the shaft body 411 .

[0065] In this way, when the brush head assembly 100 and the handle 200 are connected, the driving seal 221 is installed against the top surface of the bracket 230, and the upper and lower ends of the driving seal 221 are protruding from the output hole 220. The driving seal 221 is provided with two ribs on one side close to the output hole 220, and one rib is provided on one side close to the shaft 411, wherein the driving seal 221 is provided as a sealing plug, thereby preventing water from entering the connection between the input hole and the shaft 411. The cross-sectional shape of the driving seal 221 is set to be an I-shaped.

[0066] In another embodiment, a bottom shell 500 is mounted on one end of the handle 200 facing away from the brush head assembly 100 . A sealing ring 510 is disposed on the bottom shell 500 . The sealing ring 510 is interference-fitted with the side wall of the cavity 210 .

[0067] In this way, the bottom of the handle 200 is open and connected to the outside, the bottom shell 500 is snap-fitted to the bottom of the handle 200, and the sealing ring 510 is used to prevent water from entering the bottom shell 500 and the handle 200, thereby effectively extending the service life of the electric toothbrush 10.

[0068] In another embodiment, the handle 200 is provided with a water-blocking portion 240 for preventing water from entering the output hole 220, and the brush handle 120 is arranged around and abuts against the outer periphery of the water-blocking portion 240; the electric toothbrush 10 further includes a driving seal 221, and the driving seal 221 is arranged in an interference fit with the side wall of the output hole 220 and the outer periphery of the shaft body 411;

[0069] In another embodiment, a water-blocking portion 240 is provided on the handle 200 for preventing water from entering the output hole 220, and the brush handle 120 is arranged around and abuts against the outer periphery of the water-blocking portion 240; a bottom shell 500 is installed on the end of the handle 200 facing away from the brush head assembly 100, and a sealing ring 510 is provided on the bottom shell 500, and the sealing ring 510 is arranged to be interference fit with the side wall of the cavity 210.

[0070] In another embodiment, the electric toothbrush 10 further includes a driving seal 221, which is interference fit with the side wall of the output hole 220 and the outer peripheral side of the shaft 411; a bottom shell 500 is installed on the end of the handle 200 facing away from the brush head assembly 100, and a sealing ring 510 is provided on the bottom shell 500, which is interference fit with the side wall of the cavity 210.

[0071] In another embodiment, a water-blocking portion 240 for preventing water from entering the output hole 220 is provided on the handle 200, and the brush handle 120 is arranged around and abuts against the outer periphery of the water-blocking portion 240; the electric toothbrush 10 also includes a driving seal 221, and the driving seal 221 is interference fit with the side wall of the output hole 220 and the outer periphery of the shaft 411; the end of the handle 200 facing away from the brush head assembly 100 is cooperated with the bottom shell 500, and a sealing ring 510 is provided on the bottom shell 500, and the sealing ring 510 is interference fit with the side wall of the cavity 210.

[0072] In this way, the upper and lower ends of the driving seal 221 are respectively protruded from the upper and lower ends of the water-isolating portion 240 and are engaged with the water-isolating portion 240 .

[0073] Example 4

[0074] like Figures 2 to 5 As shown, this embodiment is a further implementation of embodiment 1, 2 or 3. In this embodiment, a charging port is opened on the outer side of the handle 200, and a charging seat 600 for charging the charging component 420 is provided on the side wall of the charging port.

[0075] Specifically, by providing a charging stand 600 on the outside of the handle 200, the charging device has better compatibility and is easy to use. Among them, on the basis of Example 3, a charging port is opened on the end surface of the brush handle 120 close to the bottom shell 500, so that the charging stand 600 can be fixed on the bottom shell 500 by screws, and can be assembled in an inserted manner. So that the charging stand 600 is arranged between the handle 200 and the bottom shell 500. Among them, the charging stand 600 can be selected but not limited to a Type-C charging stand.

[0076] To prevent water ingress, Figures 1 to 5As shown, in some embodiments, the charging stand 600 is connected with a waterproof seal 610 , and the waterproof seal 610 is interference fit with the handle 200 and the charging stand 600 .

[0077] Specifically, the charging stand 600, the handle 200 and the waterproof seal 610 are double-ribbed interference fit to prevent water from entering from the installation gap of the charging stand 600. The waterproof seal 610 may be selected from but not limited to a sealing plug.

[0078] Example 5

[0079] like Figures 3 to 5 As shown, this embodiment is a further implementation of embodiment 1, 2, 3 or 4. In this embodiment, a locking portion is provided on the side wall of the cavity 210, and the bracket 230 and the bottom shell 500 are provided with locking pieces, and the two locking pieces are respectively connected to the locking portion by staggered snap-fitting.

[0080] Specifically, the clamping portion can be set as the clamping slot 211, so that the clamping member on the bracket 230 is set as a clamping block 233, and the clamping member on the bottom shell 500 is set as two clamping blocks 520, the clamping block 233 is set in the middle of the clamping slot 211, and the two clamping blocks 520 are respectively set on both sides of the clamping slot 211, so that the clamping block 233 is located between the two clamping blocks 520. At this time, the clamping block 233 is mainly affected by the limiting abutment of the upper end side wall of the clamping slot 211, and the clamping block 520 is mainly affected by the limiting abutment of the lower end of the clamping slot 211, so that the bracket 230 and the bottom shell 500 are staggered and buckled, thereby simplifying the product structure and mold structure.

[0081] There are two card slots 211 , and the two card slots 211 are arranged opposite to each other, and the card positioning members are arranged correspondingly.

[0082] To facilitate disassembly, Figure 3 As shown, in some embodiments, a chamfer is provided at the engaging portion between the engaging block 520 and the engaging slot 211 .

[0083] Specifically, the buckling part of the bottom shell 500 is made into an oblique angle, so that the finished product can be easily repaired and disassembled.

[0084] Example 6

[0085] like Figure 2 , Figure 4 and Figure 5 As shown, this embodiment is a further implementation of embodiment 1, 2, 3, 4 or 5. In this embodiment, the electric toothbrush 10 further includes a PCB board 700, an indicator light 710 and a button 720. Figure 2The PCB board 700 is disposed in the cavity 210, and is disposed on the outside of the bracket 230 and is electrically connected to the driving assembly 400. The handle 200 has two through holes, and the button 720 and the indicator light 710 are connected to the PCB board 700 through the through holes, and the indicator light 710 is disposed close to the brush head assembly 100.

[0086] In this way, the indicator lights 710 are concentrated on the upper end of the button 720, and the status of the electric toothbrush 10 is more intuitive.

[0087] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0088] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0089] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0090] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0091] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. An electric toothbrush, characterized in that: include: A brush head assembly (100), a drive assembly (400), a handle (200) and a tilt positioning assembly (300); The handle (200) has a cavity (210) and an output hole (220) that are interconnected, the drive assembly (400) includes a driver (410), the tilt positioning assembly (300) is connected in the cavity (210), the tilt positioning assembly (300) is connected to the driver (410), so that the driver (410) is inclined by 1° to 10° relative to the central axis of the handle (200), the output end of the driver (410) passes through the output hole (220) and is connected to the brush head assembly (100), and the driver (410) and the brush head assembly (100) are connected in a straight line.

2. The electric toothbrush according to claim 1, characterized in that: The tilt positioning assembly (300) comprises a plurality of beveled arc surface ribs, and the plurality of beveled arc surface ribs are connected to the side wall of the cavity (210).

3. The electric toothbrush according to claim 1, characterized in that: The brush head assembly (100) is arranged to be inclined at 2° to 5° relative to the central axis of the handle (200).

4. The electric toothbrush according to claim 1, characterized in that: The driving assembly (400) further includes a charging component (420), and a bracket (230) for positioning and installing the driver (410) and the charging component (420) is provided in the cavity (210), and the bracket (230) is respectively engaged with the driver (410) and the charging component (420).

5. The electric toothbrush according to claim 4, characterized in that: The tilt positioning assembly (300) is installed in the bracket (230), and at least two positioning members (231) are arranged in the bracket (230), and the two positioning members (231) are staggered to fasten the driver (410).

6. The electric toothbrush according to claim 4, characterized in that: A charging port is provided on the outer side of the handle (200), and a charging seat (600) for charging the charging component (420) is provided on the side wall of the charging port.

7. The electric toothbrush according to claim 6, characterized in that: The charging seat (600) is cooperatively connected with a waterproof seal (610), and the waterproof seal (610) is arranged in an interference fit with the handle (200) and the charging seat (600).

8. The electric toothbrush according to claim 1, characterized in that: The output end of the driver (410) is arranged as a shaft (411); the brush head assembly (100) comprises a connecting piece (110), bristles (130) and a brush handle (120) having a mounting cavity (121); the bristles (130) are mounted on the brush handle (120); the connecting piece (110) is connected to the mounting cavity (121); and the connecting piece (110) and the shaft (411) are snap-fittedly connected.

9. The electric toothbrush according to claim 8, characterized in that: A matching groove (111) matching with the shaft body (411) is provided in the connecting piece (110), and the shaft body (411) and the matching groove (111) are arranged in a wedge-shaped matching manner.

10. The electric toothbrush according to claim 8, characterized in that: The handle (200) is provided with a water-isolating portion (240) for preventing water from entering the output hole (220), and the brush handle (120) is arranged around and abuts against the outer periphery of the water-isolating portion (240); and / or It also includes a driving seal (221), wherein the driving seal (221) is arranged in an interference fit with the side wall of the output hole (220) and the outer peripheral side of the shaft body (411); and / or A bottom shell (500) is mounted on one end of the handle (200) facing away from the brush head assembly (100), and a sealing ring (510) is arranged on the bottom shell (500). The sealing ring (510) is arranged in an interference fit with the side wall of the cavity (210).

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