electric toothbrush

Abstract

This invention provides an electric toothbrush that transmits a relatively large amount of motor vibration to the brush head, thereby reducing energy consumption. [Solution] The electric toothbrush of this application includes a support frame (1) having a hollow portion (13), a drive frame (2) elastically connected to the support frame (1), the drive frame (2) being positioned in the hollow portion (13), spaced apart from the support frame (1), and having a tenon connecting member (21) for connecting a brush head, and a motor (5) provided on the drive frame (2), the operation of which the motor (5) can drive the drive frame (2) to swing or vibrate relative to the support frame (1), thereby the tenon connecting member (21) can drive the brush head to swing or vibrate.

Description

Technical Field

[0001] This application relates to the technical field of oral cleaning, and particularly to an electric toothbrush.

Background Art

[0002] An electric toothbrush generates high-frequency vibrations in the brush head through the high-speed rotation or vibration of the motor core, instantly decomposes toothpaste into fine bubbles, and cleans deep between teeth. At the same time, the movement of the brush bristles promotes blood circulation in the oral cavity and brings a massage effect to the gum tissue.

[0003] In the prior art, a drive mechanism with an eccentric vibration motor has a large volume, a complex structure, a high cost, a strong vibration feeling in the brush handle, a high noise level, a large attenuation of the vibration output to the brush head, and a large energy consumption.

Summary of the Invention

[0004] In order to overcome or mitigate the above problems in the prior art, an object of this application is to propose an electric toothbrush that transmits relatively more vibrations of the motor to the brush head and reduces energy consumption.

[0005] This application provides a support frame provided with a hollow portion, a drive frame elastically connected to the support frame, disposed in the hollow portion, spaced apart from the support frame, and provided with a hozo connection member for connecting the brush head, a motor provided on the drive frame, which can drive the drive frame to swing or vibrate relative to the support frame by the operation of the motor, whereby the hozo connection member can drive the brush head to swing or vibrate, and proposes an electric toothbrush including the motor.

[0006] In at least one possible embodiment, the drive frame and the support frame are connected by a connecting portion and an elastic portion, the connecting portion being connected to the tenon connecting member, and the elastic portion being positioned on both the left and right sides of the connecting portion in the left-right direction of the electric toothbrush.

[0007] In at least one possible embodiment, the elastic portion is in the form of a flake, and the thickness of the elastic portion in the front-to-back direction of the electric toothbrush is greater than the thickness of the electric toothbrush in the left-to-right direction.

[0008] In at least one possible embodiment, the electric toothbrush further includes a tenon, the tenon extending from the vertical front of the body of the electric toothbrush, the tenon being used to connect a brush head, and the tenon connecting member being connected to the tenon, In the vertical direction of the electric toothbrush, the elastic part is positioned in front of the motor, and the tenon is positioned in front of the elastic part.

[0009] In at least one possible embodiment, a vibration damping member is provided in the gap between the drive frame and the support frame, the vibration damping member being elastic, and the vibration damping member being able to mitigate the impact on the support frame by the drive frame when the drive frame swings or vibrates.

[0010] In at least one possible embodiment, at least a portion of the vibration damping member is arranged on both the left and right sides of the drive frame in the left-right direction of the electric toothbrush.

[0011] In at least one possible embodiment, a weight is connected to the drive frame.

[0012] In at least one possible embodiment, an eccentric block is connected to the output shaft of the motor, and the motor rotates the eccentric block, causing the drive frame to oscillate or vibrate, and in the vertical direction of the body of the electric toothbrush, the eccentric block is located below the motor and the weight is located above the motor.

[0013] In at least one possible embodiment, a waterproof ring mounting hole is provided at the tip of the support frame, and a waterproof ring is attached to the waterproof ring mounting hole.

[0014] In at least one possible embodiment, the tenon connecting member, the connecting portion, the elastic portion, and the support frame are integrally molded.

[0015] In at least one possible embodiment, the material of the support frame and the drive frame has a tensile strength of 90 to 260 MPa and a flexural modulus of 3500 to 8000 MPa.

[0016] By employing the above technical solution, the motor drives the drive frame to oscillate or vibrate relative to the support frame 1, thereby driving the tenon connecting member to oscillate or vibrate the brush head. This reduces the transmission of vibrations to the brush handle, lowers energy consumption, and improves the brushing effect. [Brief explanation of the drawing]

[0017] [Figure 1] This shows an exploded perspective view of a partial structure of an electric toothbrush according to the first embodiment of this application. [Figure 2] This document shows a cross-sectional view of the brush handle of an electric toothbrush according to the first embodiment of this application. [Figure 3] This document shows a cross-sectional view of the brush handle of an electric toothbrush according to the first embodiment of this application. [Figure 4] This document shows a front view of the support frame and drive frame of an electric toothbrush according to the first embodiment of this application. [Figure 5] The plan view of the support frame and the drive frame of the electric toothbrush according to the first embodiment of the present application is shown. [Figure 6] The front view of the support frame and the drive frame of the electric toothbrush according to the second embodiment of the present application is shown. [Figure 7] The front view of the support frame and the drive frame of the electric toothbrush according to the third embodiment of the present application is shown. [Figure 8] The front view of the support frame and the drive frame of the electric toothbrush according to the fourth embodiment of the present application is shown. [Figure 9] The front view of the support frame and the drive frame of the electric toothbrush according to the fifth embodiment of the present application is shown.

Embodiments for Carrying Out the Invention

[0018] In order to more clearly explain the above objects, features, and advantages of the present application, in this part, specific embodiments of the present application will be described in detail in conjunction with the accompanying drawings. In addition to the embodiments described in this part, the present application can also be implemented in other different forms, and those skilled in the art can make corresponding improvements, modifications, and substitutions without departing from the spirit of the present application. Therefore, the present application is not limited by the specific examples disclosed in this part. The protection scope of the present application shall be subject to the claims.

[0019] First Embodiment In the following description, the vertical direction A of the electric toothbrush indicates the extending direction of the axis of the electric toothbrush, the upper side indicates the side where the brush head is arranged, and the lower side indicates the side where the brush handle is arranged. The front-rear direction F of the electric toothbrush indicates the extending direction of the bristles of the brush head of the electric toothbrush, the front side indicates the side where the bristles face, and the rear side indicates the side opposite to the direction of the bristles. The left-right direction R of the electric toothbrush is perpendicular to both the vertical direction A and the front-rear direction F of the electric toothbrush.

[0020] As shown in FIGS. 1 to 5, an embodiment of the present application proposes an electric toothbrush including a brush handle and a brush head (not shown). The brush handle includes a main body 100, a support frame 1, a drive frame 2, a weight 3, a pressure-sensitive switch 4, a motor 5, a vibration damping member 6, and a shank 7. The support frame 1, the drive frame 2, the weight 3, the pressure-sensitive switch 4, the motor 5, and the vibration damping member 6 can be arranged inside the main body 100, and the shank 7 extends from the main body 100 to connect the brush head. The brush head is detachably and replaceably connected to the shank 7.

[0021] The support frame 1 can be used, for example, to attach or fix other members such as a battery 11 and a circuit board 12. A hollow portion 13 can be provided in the support frame 1. The hollow portion 13 can be arranged at an intermediate position in the left-right direction R of the electric toothbrush, and the hollow portion 13 can penetrate along the front-rear direction F of the electric toothbrush.

[0022] The pressure-sensitive switch 4 can be connected to the circuit board 12. The pressure-sensitive switch 4 is used to control the switch of the electric toothbrush. With the pressure-sensitive switch 4, the user can conveniently control the on and off of the switch of the electric toothbrush, improving the convenience of the user's operation and the usage experience.

[0023] The drive frame 2 can include a motor chamber 22 and a weight chamber 23. A shank connection member 21 can be connected to the upper side of the drive frame 2. The shank connection member 21 can be cylindrical. The shank connection member 21 is fixedly connected to the shank 7, and the shank 7 is used to connect the brush head.

[0024] The drive frame 2 and the support frame 1 can be elastically connected by an elastic part 24, and the drive frame 2 can be positioned in the hollow part 13, and the drive frame 2 as a whole is spaced apart from the support frame 1. The motor 5 can be connected to the drive frame 2, and the vibration of the motor 5 can cause the drive frame 2 to swing or vibrate relative to the support frame 1, and this swing or vibration can be further transmitted to the tenon connecting member 21. By elastically connecting the drive frame 2 and the support frame 1 and spacing them apart as a whole, the brush head connected to the tenon 7 can have a certain degree of freedom of movement, so that the brush head can receive forces from different directions and clean teeth and massage gums more effectively.

[0025] In the vertical direction A of the electric toothbrush, the tenon connecting member 21 can be positioned above the motor chamber 22. An eccentric block 51 can be attached to the output shaft of the motor 5, which allows the motor 5 to vibrate when it rotates, and the motor 5 is housed in the motor chamber 22. A weight chamber 23 can be positioned above the motor chamber 22, and the weight 3 is housed in the weight chamber 23. In the vertical direction A of the electric toothbrush, the eccentric block 51 can be positioned below the motor 5, and the weight 3 can be positioned above the motor 5.

[0026] Weight 3 increases the overall weight of the drive frame 2, equalizes vibrations generated during motor operation, avoids imbalances caused by vibration, stabilizes the electric toothbrush during use, and allows the brush head to move more smoothly and efficiently.

[0027] The drive frame 2 can be elastically connected to the support frame 1 by a tenon connecting member 21, a connecting portion 25, and an elastic portion 24. The connecting portion 25 can be connected to the tenon connecting member 21, the connecting portion 25 can be flat, and the connecting portion 25 can surround the tenon connecting member 21. The tenon connecting member 21 is connected to the elastic portion 24 via the connecting portion 25, and the connecting portion 25 is connected to the support frame 1 via two elastic portions 24, and the elastic portion 24 can be positioned on both the left and right sides in the left-right direction R of the connecting portion 25. The dimensions of the connecting portion 25 and the elastic portion 24 can be the same in the front-rear direction F. The connecting portion 25 and the elastic portion 24 can be formed in a U shape, the connecting portion 25 forming the bottom of the U, and the elastic portion 24 including two elastic pieces that form the two arm portions of the U. In the vertical direction A, the connecting portion 25 can be positioned at the lower end of the elastic portion 24. The elastic piece can be flat and extend along the vertical direction A and the front-rear direction F. A gap exists between the tenon connecting member 21 and the elastic part 24, with the tenon connecting member 21 positioned between two elastic pieces. The tenon connecting member 21 and the elastic pieces can be spaced 0.5 to 1 mm apart, and the width of the elastic part 24 (dimension in the front-to-back direction F) can be 4.9 to 5.5 mm. The left-to-right dimension (thickness) of the connecting part 25 can be 1.5 mm or more. As can be understood, the thickness of the connecting part 25 can be appropriately adjusted according to the length of the tenon connecting member 21. The elastic part 24 allows the motor 5 to drive the drive frame 2 to oscillate or vibrate relative to the support frame 1. The elastic part 24 can absorb and mitigate external forces such as vibrations and shocks during use, reducing damage to the overall structure and improving service life and grip comfort.

[0028] As can be understood, the drive frame 2, driven by the motor 5, is capable of moving in multiple directions. Such multi-directional movement not only reaches different surfaces of the teeth but also more effectively removes dirt and plaque from between the teeth.

[0029] The elastic portion 24 can be provided on both the left and right sides of the connecting portion 25 in the left-right direction R. The elastic portion 24 can be in the shape of a bendable piece, and the dimension (thickness) of the piece-shaped elastic portion 24 in the front-rear direction F may be larger than the dimension (thickness) in the left-right direction R, where the dimension (thickness) of the piece-shaped elastic portion 24 in the left-right direction R does not include the dimension of the space between the two elastic portions 24, i.e., it refers to the actual thickness of the two elastic portions 24. As a result, the elastic portion 24 is easily bent and deformed along the left-right direction R of the electric toothbrush, but is not easily bent and deformed along the front-rear direction F of the electric toothbrush (although it is still deformable). As a result, the drive frame 2 can easily swing along the left-right direction R relative to the support frame 1, and drive the brush head to swing or vibrate along the left-right direction R to clean the teeth and / or gums.

[0030] The tenon joint member 21 may have a pivot point, and as can be understood, the pivot point is an artificially defined virtual position and not a structurally existing support point. The drive frame 2 can swing or vibrate around the pivot point when the motor 5 drives the drive frame 2 to swing or vibrate.

[0031] In this embodiment, the tenon connecting member 21, the elastic part 24, the connecting part 25, and the support frame 1 can be integrally molded as selectable, thereby relatively increasing the overall structural strength and stability of the support frame 1 and the drive frame 2.

[0032] Selectively, the tenon joint member 21, elastic part 24, joint part 25, and support frame 1 can all be made from a mixture of polyamide 66 (PA66) and glass fiber. In other possible embodiments, materials with a tensile strength of 90 to 260 MPa and a flexural modulus of 3500 to 8000 MPa can be selected, including, but not limited to, materials mixed with polyamide 66 and different proportions of glass fiber, materials mixed with polyamide 6 and different proportions of glass fiber, and polypropylene. As the glass fiber content increases, the tensile strength (in MPa) and flexural modulus (in MPa) of the material can be increased, increasing the stiffness and strength of the material.

[0033] Furthermore, the tenon connecting member 21, the elastic part 24, the connecting part 25, and the support frame 1 can all be manufactured by mixing polyamide 66 (PA66) with 15% to 30% glass fiber, thereby providing a material with relatively high rigidity and strength, while also meeting the requirements for impact resistance.

[0034] For example, two waterproof ring mounting holes 15 can be provided at the tip of the support frame 1, and the two waterproof ring mounting holes 15 can be provided on both the left and right sides of the tenon connecting member 21 in the left-right direction R of the electric toothbrush. The waterproof ring mounting holes 15 can be used to connect a waterproof ring 14. The waterproof ring 14 is used to prevent water and bubbles from entering the inside of the main body 100.

[0035] The vibration damping member 6 can be connected to the drive frame 2, and at least a portion of the vibration damping member 6 is placed in the gap between the drive frame 2 and the support frame 1. The vibration damping member 6 is elastic, and for example, it can be made of rubber. When the drive frame 2 oscillates or vibrates, the vibration damping member 6 can effectively absorb and mitigate the vibrations transmitted to the support frame 1, reducing the intensity of vibrations transmitted to the user's hand and improving comfort of use. For example, the vibration damping member 6 can be attached to the drive frame 2 along the front-rear direction F, and the dimension of the vibration damping member 6 in the left-right direction R can be made larger than the dimension of the drive frame 2 in the left-right direction R, so that a portion of the vibration damping member 6 is placed in the gap between the drive frame 2 and the support frame 1.

[0036] By damping vibrations with the vibration damping member 6, the motor 5 and other components can be protected, and the noise generated when the motor 5 is operating can be reduced. As a result, the electric toothbrush becomes quieter during use, improving the user experience. Furthermore, since the vibration damping member 6 can also dampen external impacts, damage from falls is reduced, extending the lifespan of the electric toothbrush.

[0037] Furthermore, a vibration damping member mounting groove 26 can be provided in the drive frame 2, and the vibration damping member 6 can be attached to the vibration damping member mounting groove 26. In the vertical direction A of the electric toothbrush, the vibration damping member mounting groove 26 can be provided on the lower side of the motor chamber 22, and the vibration damping member 6 can be provided on the lower side of the motor 5.

[0038] When using the electric toothbrush of this application, the user can turn on the electric toothbrush with the pressure-sensitive switch 4 to activate the power, thereby rotating the motor 5. The motor 5 drives the eccentric block 51 to rotate, causing the drive frame 2 to oscillate or vibrate around the pivot point, transmitting power to the tenon connecting member 21, and allowing the brush head to oscillate or vibrate in multiple directions via the tenon 7. Since the drive frame 2 and the brush head are located at opposite ends of the pivot point, the principle of leverage is used to amplify the oscillation or vibration of the drive frame 2 at the position of the bristles of the brush head. This oscillation or vibration allows for effective cleaning of the tooth surface and hard-to-reach areas, improving the effectiveness of toothbrushing.

[0039] The electric toothbrush of this application has the following beneficial effects. (1) By using the motor 5 to oscillate or vibrate the drive frame 2 relative to the support frame 1, the tenon connecting member 21 can be driven to oscillate or vibrate the brush head in sync. This design effectively reduces vibration transmission to the brush handle, thereby reducing energy consumption and improving the toothbrushing effect. Furthermore, the structure is simple, and the rotational motion of the motor 5 can be easily converted into the oscillating or vibrating motion of the tenon connecting member 21, further reducing production costs. (2) The vibration damping member 6 absorbs and mitigates the impact that the drive frame 2 exerts on the support frame 1, so that vibrations are transmitted to the user's hand with relatively little force, the intensity of vibrations transmitted to the user's hand is weakened, improving comfort of use, noise is reduced, the quietness during use of the electric toothbrush is further improved, and the user experience is enhanced. (3) If the electric toothbrush falls, the vibration damping member 6 can mitigate the impact from the outside, thereby reducing the impact on the motor 5, lowering the risk of damage to the motor 5, and extending the lifespan of the electric toothbrush. (4) The weight 3 increases the overall weight of the drive frame 2, balances the vibrations that occur when the motor 5 is operating, stabilizes the electric toothbrush during use, and allows the brush head to move more smoothly and efficiently. (5) The elastic part 24 absorbs and mitigates external forces applied to the brush head, such as vibrations and shocks during use, thereby reducing damage to the overall structure and improving the lifespan and grip comfort. (6) Because the tenon connecting member 21, the elastic part 24, the connecting part 25, and the support frame 1 are integrally molded, the overall structural strength of the support frame 1 and the drive frame 2 is relatively high.

[0040] This application is not limited to the embodiments described above, and those skilled in the art can make various modifications to the embodiments described above without departing from the scope of this application, under the teachings of this application. Further explanation follows. (1) In the above embodiment, the vibration damping member 6 is provided on the drive frame 2, but this application is not limited thereto, and the vibration damping member may be connected to the support frame as long as at least some of the vibration damping member is placed in the gap between the drive frame and the support frame. (2) In the above embodiment, the elastic portion 24 is in the shape of a flap, but this application is not limited thereto, and the elastic portion can be columnar or in other shapes, for example, a plurality of columnar elastic portions can replace the flap-shaped elastic portion of the above embodiment.

[0041] Second Embodiment The electric toothbrush of the second embodiment of this application has an overall structure similar to the electric toothbrush of the first embodiment, and the same reference numerals are used for identical or similar parts in both embodiments. The main difference between the second embodiment and the first embodiment lies in the structure of the tenon connecting member 21.

[0042] As shown in Figure 6, the tenon connecting member 21 can extend beyond the uppermost end of the elastic portion 24 in the vertical direction A, and the relatively long tenon connecting member 21 can position the brush head relatively far from the pivot point, and by utilizing the lever principle, the swing range of the brush head can be increased.

[0043] Third Embodiment The electric toothbrush of the third embodiment of this application has an overall structure similar to the electric toothbrush of the second embodiment, and the same reference numerals are used for identical or similar parts in both embodiments. The main difference between the third embodiment and the second embodiment lies in the structure of the tenon connecting member 21.

[0044] As shown in Figure 7, an annular groove 211 can be provided in the tenon connecting member 21, and the annular groove 211 and the elastic part 24 can be in the same position in the vertical direction A. This makes the gap between the tenon connecting member 21 and the elastic part 24 relatively large, and the tenon connecting member 21 can provide sufficient swing space.

[0045] Fourth Embodiment The electric toothbrush of the fourth embodiment of this application has an overall structure similar to the electric toothbrush of the second embodiment, and the same reference numerals are used for identical or similar parts in both embodiments. The main difference between the fourth embodiment and the second embodiment lies in the structure of the elastic part 24.

[0046] As shown in Figure 8, the connecting portion 25 and the elastic portion 24 can be formed in an n-shape, with the connecting portion 25 forming the apex of the n-shape, and the elastic portion 24 including an elastic piece forming the two arm portions of the n-shape. In the vertical direction A, the connecting portion 25 can be positioned at the upper end of the elastic portion 24.

[0047] The tenon connecting member 21 can be provided with a recess, and the recess and the elastic part 24 can be in the same position in the vertical direction A. This allows the gap between the tenon connecting member 21 and the elastic part 24 to be made relatively large, and the tenon connecting member 21 can provide sufficient swing space.

[0048] Fifth Embodiment The electric toothbrush of the fifth embodiment of this application has an overall structure similar to the electric toothbrush of the second embodiment, and the same or similar parts in both embodiments are referred to by the same reference numerals. The main difference between the fifth embodiment and the second embodiment lies in the structure of the elastic part 24.

[0049] As shown in Figure 9, both the connecting portion 25 and the elastic portion 24 extend along the left-right direction R and the front-rear direction F, the connecting portion 25 and the elastic portion 24 can be formed in a straight line, the elastic portion 24 includes an elastic piece, and the two elastic portions 24 can be positioned at both the left and right ends of the connecting portion 25.

[0050] It should be understood that at least some aspects or features in the above embodiments, examples, or illustrations can be suitably combined.

[0051] To the extent that it can be understood, in this application, if the number of members or parts is not particularly limited, the number may be one or more, where more means two or more. Where the number of members or parts is illustrated in the accompanying drawings and / or described in the specification as a specific number such as two, three, or four, such specific number is generally illustrative and not limiting, and can be understood as more than one, i.e., two or more, but this does not mean that this application excludes the case of one.

[0052] In this application, unless otherwise clearly stated or limited, terms such as “mounting,” “assembly,” “joining,” “connection,” “coupling,” “linking,” “contact,” “communication,” “interconnection,” “conductivity,” “fixing,” and “tightening” should be understood in a broad sense, and may be direct or indirect, for example. For example, with respect to connection, it may be a fixed connection, a detachable connection, or a connection formed integrally; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection via an intermediate medium; and unless otherwise clearly stated or limited, it may be a connection within two elements or an interaction relationship between two elements. For example, with respect to communication / conductivity, it may be direct communication / conductivity or indirect communication / conductivity via an intermediate medium. A person skilled in the art will be able to understand the specific meaning of the above terms in this application depending on the specific situation.

[0053] In this application, unless otherwise clearly stated or limited, the placement / mounting / location / housing / situation of one component within, inside, or within another component may be in any one of the following two forms: that a portion or most of the one component is located within the other component, and that the one component is completely housed within the other component.

[0054] Although this application has been described in detail using the embodiments described above, it will be apparent to those skilled in the art that this application is not limited to the embodiments described herein. This application can be implemented in modified and altered embodiments without departing from the essence and scope of this application as defined by the claims. Accordingly, the descriptions herein are for illustrative purposes only and are not intended to be restrictive in any way to this application. [Explanation of symbols]

[0055] 1. Support frame 11 Batteries 12 Circuit boards 13 Hollow part 14 Waterproof Rings 15 Waterproof ring mounting holes 2 Drive frame 21. Mortise and tenon joint member 211 Annular groove 22 Motor Room 23 Weight Room 24 Elastic part 25 Connection part 26 Vibration damping member mounting groove 3 weights 4. Pressure-sensitive switch 5 Motors 51 Eccentric block 6. Vibration damping members 7 mortise A Vertical direction F Front and back direction R Left / right direction

Claims

1. A support frame (1) having a hollow section (13), A drive frame (2) elastically connected to the support frame (1), the drive frame (2) is positioned in the hollow portion (13), spaced apart from the support frame (1), and has a tenon connecting member (21) for connecting a brush head, An electric toothbrush characterized by including a motor (5) provided on the drive frame (2), the motor (5) being able to drive the drive frame (2) to swing or vibrate relative to the support frame (1) by operation, thereby allowing the tenon connecting member (21) to drive the brush head to swing or vibrate.

2. The electric toothbrush according to claim 1, wherein the drive frame (2) and the support frame (1) are connected by a connecting portion (25) and an elastic portion (24), the connecting portion (25) is connected to the tenon connecting member (21), and in the left-right direction (R) of the electric toothbrush, the elastic portion (24) is arranged on both the left and right sides of the connecting portion (25).

3. The electric toothbrush according to claim 2, characterized in that the elastic portion (24) is in the shape of a flake, and the thickness of the elastic portion (24) along the front-to-back direction (F) of the electric toothbrush is greater than the thickness along the left-to-right direction (R) of the electric toothbrush.

4. The electric toothbrush further includes a tenon (7), the tenon (7) extending from the front side in the vertical direction (A) of the body (100) of the electric toothbrush, the tenon (7) is used to connect the brush head, and the tenon connecting member (21) is connected to the tenon (7). The electric toothbrush according to claim 2, characterized in that, in the vertical direction (A) of the electric toothbrush, the elastic part (24) is positioned in front of the motor (5), and the tenon (7) is positioned in front of the elastic part (24).

5. The electric toothbrush according to claim 1, wherein a vibration damping member (6) is provided in the gap between the drive frame (2) and the support frame (1), the vibration damping member (6) is elastic, and the vibration damping member (6) can mitigate the impact on the support frame (1) by the drive frame (2) when the drive frame (2) swings or vibrates.

6. The electric toothbrush according to claim 5, characterized in that at least a portion of the vibration damping member (6) is arranged on both the left and right sides of the drive frame (2) in the left-right direction (R) of the electric toothbrush.

7. The electric toothbrush according to claim 1, characterized in that a weight (3) is connected to the drive frame (2).

8. The electric toothbrush according to claim 7, wherein an eccentric block (51) is connected to the output shaft of the motor (5), and the motor (5) rotates the eccentric block (51) to cause the drive frame (2) to swing or vibrate, and in the vertical direction (A) of the main body (100) of the electric toothbrush, the eccentric block (51) is positioned below the motor (5), and the weight (3) is positioned above the motor (5).

9. The electric toothbrush according to claim 1, characterized in that a waterproof ring mounting hole (15) is provided at the tip of the support frame (1), and a waterproof ring (14) is attached to the waterproof ring mounting hole (15).

10. The electric toothbrush according to claim 2, characterized in that the tenon connecting member (21), the connecting portion (25), the elastic portion (24), and the support frame (1) are integrally molded.

11. The electric toothbrush according to claim 1, characterized in that the material of the support frame (1) and the drive frame (2) has a tensile strength of 90 to 260 MPa and a flexural modulus of 3500 to 8000 MPa.

Images