Electric toothbrush

Abstract

The utility model discloses a kind of electric toothbrush, it is related to electric toothbrush technical field, wherein, electric toothbrush includes: handle, driving device, brush head and ultrasonic transducer;The driving device is installed in the handle, the driving device has first driving shaft;The brush head transmission connection is in the first driving shaft;The ultrasonic transducer is installed in the first driving shaft;The driving device and / or the ultrasonic transducer are used to drive the brush head vibration according to preset mode;The technical scheme provided by the utility model makes electric toothbrush can be carried out ordinary acoustic vibration by driving device, can also be carried out higher frequency ultrasonic vibration by ultrasonic transducer, user can clean teeth using different functions according to needs, to improve the cleaning effect of electric toothbrush.

Description

Technical Field

[0001] This utility model relates to the field of electric toothbrush technology, and in particular to an electric toothbrush. Background Technology

[0002] An electric toothbrush is a type of toothbrush that uses electricity to vibrate its brush head. The rapid rotation or vibration of the motor motor causes the brush head to vibrate at a high frequency, instantly breaking down toothpaste into fine foam that deeply cleans between teeth. Simultaneously, the vibration of the bristles promotes blood circulation in the mouth and massages the gum tissue. Electric toothbrushes typically use a built-in motor to drive the brush head vibration. However, current technology limits the vibration frequency of electric toothbrushes, resulting in a less effective cleaning and a less comprehensive cleaning experience. Utility Model Content

[0003] The main purpose of this invention is to provide an electric toothbrush that improves the cleaning effect of electric toothbrushes.

[0004] To achieve the above objectives, the electric toothbrush proposed in this utility model includes: a handle, a drive device, a brush head, and an ultrasonic transducer; the drive device is mounted on the handle and has a first drive shaft; the brush head is drivenly connected to the first drive shaft; the ultrasonic transducer is mounted on the first drive shaft; the drive device and / or the ultrasonic transducer are used to drive the brush head to vibrate in a preset manner.

[0005] In one embodiment, the driving device further includes a driving assembly and a connector, the driving assembly having a second driving shaft; the first driving shaft is connected to the second driving shaft via the connector.

[0006] In one embodiment, the drive assembly further includes: a housing, a drive shaft assembly, and a coil assembly; the drive shaft assembly is movably mounted in the housing, and the second drive shaft is disposed in the drive shaft assembly; the coil assembly is mounted in the housing, and the coil assembly has a through slot extending along a first direction, the drive shaft assembly passing through the through slot, and the coil assembly is used to drive the second drive shaft to vibrate under the action of electricity.

[0007] In one embodiment, the first drive shaft has a mounting portion, a limiting portion, and a drive portion arranged sequentially along a first direction; the mounting portion is located at one end of the limiting portion near the drive assembly, the mounting portion and the limiting portion are housed in the handle, and the drive portion extends at least partially out of the handle; the ultrasonic transducer is mounted on the mounting portion, and one end of the mounting portion away from the limiting portion is connected to the second drive shaft via the connector; the brush head is connected to the drive portion.

[0008] In one embodiment, the outer diameter of the limiting portion gradually increases from the driving portion toward the mounting portion.

[0009] In one embodiment, at least two ultrasonic transducers are arranged sequentially along a first direction.

[0010] In one embodiment, the brush head has an amplitude lever that is driven to the first drive shaft.

[0011] In one embodiment, the brush head further includes a brush head body having a receiving cavity facing the opening of the first drive shaft, the amplitude rod being inserted into the receiving cavity, the first drive shaft extending at least partially into the receiving cavity and being detachably connected to one end of the amplitude rod near the opening.

[0012] In one embodiment, the amplitude rod has a protrusion, and the outer surface of the brush head body has a first region for setting bristles. The bottom wall of the first region has a through hole communicating with the receiving cavity, and the protrusion extends out of the first region through the through hole.

[0013] In one embodiment, the electric toothbrush further includes a circuit assembly, and the drive device and the ultrasonic transducer are respectively electrically connected to the circuit assembly.

[0014] The technical solution of this utility model incorporates a handle, a drive device, a brush head, and an ultrasonic transducer in an electric toothbrush. The drive device is mounted on the handle and has a first drive shaft. The brush head is driven and connected to the first drive shaft. The ultrasonic transducer is mounted on the first drive shaft. The drive device and / or the ultrasonic transducer drive the brush head to vibrate in a preset manner. This allows the electric toothbrush to perform ordinary sonic vibrations via the drive device and higher-frequency ultrasonic vibrations via the ultrasonic transducer. Users can use different functions to clean their teeth as needed, thereby improving the cleaning effect of the electric toothbrush. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the electric toothbrush provided by this utility model; Figure 2 An exploded structural diagram of an embodiment of the electric toothbrush provided by this utility model; Figure 3 for Figure 1 Sectional view at point AA; Figure 4 A schematic diagram of the structure of the first drive shaft in one embodiment of the electric toothbrush provided by this utility model; Figure 5 This is an exploded view of the drive device in one embodiment of the electric toothbrush provided by this utility model.

[0017] Explanation of icon numbers: 100. Electric toothbrush; 1. Handle; 2. Drive unit; 21. First drive shaft; 211. Mounting part; 212. Limiting part; 213. Drive part; 22. Drive assembly; 221. Second drive shaft; 222. Housing; 223. Drive shaft assembly; 224. Coil assembly; 23. Connector; 3. Brush head; 31. Amplitude bar; 311. Protrusion; 32. Brush head body; 321. Receptacle; 322. First area; 4. Ultrasonic transducer; 5. Circuit assembly.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] This utility model proposes an electric toothbrush 100.

[0023] Please see Figures 1 to 4 In one embodiment of the present invention, the electric toothbrush 100 includes: a handle 1, a drive device 2, a brush head 3, and an ultrasonic transducer 4; the drive device 2 is mounted on the handle 1 and has a first drive shaft 21; the brush head 3 is connected to the first drive shaft 21; the ultrasonic transducer 4 is mounted on the first drive shaft 21; the drive device 2 and / or the ultrasonic transducer 4 are used to drive the brush head 3 to vibrate in a preset manner.

[0024] In this embodiment, the electric toothbrush 100 comprises a handle 1, a drive unit 2, a brush head 3, and an ultrasonic transducer 4. The handle 1 has a housing and a bracket installed within the housing. The drive unit 2 is fixedly installed on the bracket and has a first drive shaft 21 capable of outputting mechanical power. The brush head 3 is connected to the first drive shaft 21 via a transmission structure, enabling the first drive shaft 21 to drive the brush head 3 to vibrate. The ultrasonic transducer 4 is mounted on the first drive shaft 21, forming a vibration transmission path with the brush head 3. Compared to acoustic vibration, ultrasonic vibration has a higher vibration frequency, causing less stimulation to the gums and allowing for deeper cleaning of interdental spaces and the gum line, resulting in a higher cleaning effect. When using the electric toothbrush 100, the drive unit 2 and the ultrasonic transducer 4 can act independently on the first drive shaft 21 or work together to generate different vibration frequencies, thus creating different speed settings for the electric toothbrush 100. Users can use different speed settings as needed to clean their teeth, thereby achieving a more efficient and comprehensive teeth cleaning effect.

[0025] The technical solution of this utility model adopts an electric toothbrush 100 comprising a handle 1, a drive device 2, a brush head 3, and an ultrasonic transducer 4. The drive device 2 is mounted on the handle 1 and has a first drive shaft 21. The brush head 3 is drivenly connected to the first drive shaft 21. The ultrasonic transducer 4 is mounted on the first drive shaft 21. The drive device 2 and / or the ultrasonic transducer 4 are used to drive the brush head 3 to vibrate in a preset manner. This allows the electric toothbrush 100 to perform ordinary sonic vibrations through the drive device 2 and higher frequency ultrasonic vibrations through the ultrasonic transducer 4. Users can use different functions to clean their teeth as needed, thereby improving the cleaning effect of the electric toothbrush 100.

[0026] In one embodiment, the driving device 2 further includes a driving component 22 and a connector 23. The driving component 22 has a second driving shaft 221; the first driving shaft 21 is connected to the second driving shaft 221 via the connector 23. In this embodiment, the driving component 22 is used to generate a vibration effect to drive the second driving shaft 221 to vibrate. The first driving shaft 21 is connected to the second driving shaft 221 via the connector 23. The vibration generated by the driving component 22 can be transmitted to the first driving shaft 21 via the connector 23, and thus to the brush head 3. The connector 23 is connected and fixed to the first driving shaft 21 and the second driving shaft 221 respectively using a fixture through a riveting process to ensure the coaxiality and dynamic balance accuracy between the transmission components. This also enhances the durability of the overall structure in a high-frequency vibration environment, effectively avoiding problems such as decreased transmission efficiency or increased noise due to loose connections, and adapting to the long-term, high-frequency use requirements of the electric toothbrush 100.

[0027] In one embodiment, the drive assembly 22 further includes: a housing 222, a drive shaft assembly 223, and a coil assembly 224; the drive shaft assembly 223 is movably mounted in the housing 222, and a second drive shaft 221 is disposed in the drive shaft assembly 223; the coil assembly 224 is mounted in the housing 222, and the coil assembly 224 has a through slot extending along a first direction, through which the drive shaft assembly 223 passes, and the coil assembly 224 is used to drive the second drive shaft 221 to vibrate under the action of electricity. In this embodiment, the drive assembly 22 employs the housing 222, the drive shaft assembly 223, and the coil assembly 224; the drive shaft assembly 223 constitutes the vibration module of the drive device 2, the coil assembly 224 constitutes the stator module of the drive device 2, the drive shaft assembly 223 and the coil assembly 224 are electromagnetically connected, and when the coil assembly 224 is energized, it can drive the drive shaft assembly 223 to vibrate through electromagnetic effect. When installing the drive unit 2, it is only necessary to assemble the motor drive shaft device and coil device into the housing in sequence, which simplifies the assembly steps of the drive unit 2, improves the production efficiency of the drive unit 2 and reduces the production cost of the drive unit 2, thereby reducing the production cost of the electric toothbrush 100.

[0028] In one embodiment, the first drive shaft 21 has a mounting portion 211, a limiting portion 212, and a drive portion 213 arranged sequentially along a first direction. The mounting portion 211 is located at the end of the limiting portion 212 near the drive assembly 22. The mounting portion 211 and the limiting portion 212 are supported in the handle 1 by a bracket. The drive portion 213 extends at least partially out of the outer shell of the handle 1. An ultrasonic transducer 4 is mounted on the mounting portion 211. The end of the mounting portion 211 away from the limiting portion 212 is connected to the second drive shaft 221 via a connector 23. A brush head 3 is connected to the drive portion 213. In this embodiment, the mounting portion 211 is used to mount the ultrasonic transducer 4 so that the ultrasonic transducer 4 is fixed to the first drive shaft 21. At the same time, the mounting portion 211 is used to connect with the connector 23 so that the first drive shaft 21 and the drive assembly 22 are connected and fixed by an interceptor. The ultrasonic transducer 4 has a mounting hole through which the mounting portion 211 passes. The mounting portion 211 passes through the mounting hole and is connected to the connector 23. The limiting part 212 is used to limit the relative position of the first drive shaft 21 along the axial direction, preventing the first drive shaft 21 from disengaging from the drive assembly 22 during use. The housing 222 of the drive assembly 22 has a first sidewall on the side near the first drive shaft 21. The first sidewall has a through hole for the first drive shaft 21 to pass through. After the first drive shaft 21 passes through the through hole, the limiting part 212 is accommodated in the housing 222 and abuts against the inward side of the first sidewall. The outer diameter of the limiting part 212 is set larger than the outer diameter of the through hole so that the limiting part 212 cannot pass through the through hole, thereby limiting the axial displacement of the first drive shaft 21. The drive part 213 is used to connect with the brush head 3 to transmit vibration to the brush head 3.

[0029] In one embodiment, the outer diameter of the limiting part 212 gradually increases from the driving part 213 toward the mounting part 211. The outer diameter of the limiting part 212 is designed as a tapered structure that gradually increases from the driving part 213 toward the mounting part 211, forming a reliable axial stop and effectively preventing the first drive shaft 21 from moving outward axially during vibration. The tapered structure of the limiting part 212 can partially extend into the through hole of the housing, and the tapered surface of the limiting part 212 cooperates with the inner wall of the through hole, further limiting the radial displacement of the first drive shaft 21 without affecting the vibration effect of the first drive shaft 21, and preventing the first drive shaft 21 from radially offset relative to the housing 222.

[0030] In one embodiment, at least two ultrasonic transducers 4 are arranged sequentially along a first direction. Multiple ultrasonic transducers 4 can operate individually or in combination. By activating different numbers of ultrasonic transducers 4, the electric toothbrush 100 can further achieve vibrations at different frequencies, thereby achieving cleaning with different intensities and enabling the electric toothbrush 100 to have different vibration levels.

[0031] In one embodiment, the brush head 3 has an amplitude transformer 31, which is driven and connected to the first drive shaft 21. The amplitude transformer 31 in the brush head 3 mechanically amplifies the minute vibration amplitude generated by the ultrasonic transducer 4 and efficiently transmits it to the bristles, thereby increasing the vibration effect and improving cleaning power. The amplitude transformer 31 is only designed for the brush head 3, ensuring that the vibration amplitude is amplified only at the brush head 3, thus avoiding excessive vibration amplitude in the handle and improving user comfort.

[0032] In one embodiment, the brush head 3 further includes a brush head body 32 having a receiving cavity 321 open toward the first drive shaft 21, an amplitude rod 31 inserted into the receiving cavity 321, the first drive shaft 21 extending at least partially into the receiving cavity 321 and being detachably connected to the end of the amplitude rod 31 near the opening.

[0033] In this embodiment, the drive part 213 of the first drive shaft 21 is inserted into the receiving cavity 321 and is threadedly connected to the proximal end of the amplitude transformer 31. In other embodiments, the drive part 213 and the amplitude transformer 31 can also be connected by a quick-release structure such as a snap-lock or magnetic adsorption to ensure that the connection has sufficient rigidity and reliability during vibration transmission and to avoid excessive energy loss. The output end of the amplitude transformer 31 is located in the bristle area of ​​the brush head body 32 to directly transmit ultrasonic vibration.

[0034] In one embodiment, the amplitude transformer 31 has a protrusion 311, and the outer surface of the brush head body 32 has a first region 322 for setting bristles. The bottom wall of the first region 322 has a through hole communicating with the receiving cavity 321, and the protrusion 311 extends out of the first region 322 through the through hole. In this embodiment, the protrusion 311 is disposed on the outer wall surface of the amplitude transformer 31 corresponding to the first region 322, and the protrusion 311 has a plurality of bosses with preset shapes arranged at intervals. The bottom wall of the first region 322 has a through hole communicating with the receiving cavity 321, and the inner diameter of the through hole matches the outer diameter of the protrusion 311. After the amplitude transformer 31 is assembled onto the brush head body 32, the protrusion can pass through this through hole and extend outward from the bottom wall surface of the first region 322. This allows ultrasonic vibration to be directly and efficiently transmitted to the root area of ​​the bristle cluster. Simultaneously, the amplitude transformer 31, extending from the bottom wall of the first region 322, can directly transmit vibrations to the liquid in the mouth, generating high-speed moving microbubbles for deeper cleaning and improved cleaning effectiveness. It is understood that the shape of the protrusion 311 is designed according to the bristle arrangement to avoid the protrusion 311 occupying too much bristle area, resulting in large gaps in the bristle arrangement and insufficient density, thus failing to guarantee a cleaning effect.

[0035] In one embodiment, the electric toothbrush 100 further includes a circuit assembly 5, with the drive device 2 and the ultrasonic transducer 4 electrically connected to the circuit assembly 5 respectively. The circuit assembly 5 can drive the drive device 2 and the ultrasonic transducer 4 to work respectively, so that the drive device 2 and the ultrasonic transducer 4 can drive the brush head 3 to vibrate individually or work together to drive the brush head 3 to vibrate, so that the brush head 3 can vibrate at different frequencies, thereby achieving different levels of cleaning.

[0036] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. An electric toothbrush, characterized in that, include: handle; A drive unit, mounted on the handle, the drive unit having a first drive shaft; The brush head is connected to the first drive shaft via a transmission. as well as An ultrasonic transducer is mounted on the first drive shaft; The driving device and / or the ultrasonic transducer are used to drive the brush head to vibrate in a preset manner.

2. The electric toothbrush as described in claim 1, characterized in that, The driving device further includes a driving component and a connector, the driving component having a second driving shaft; the first driving shaft is connected to the second driving shaft via the connector.

3. The electric toothbrush as described in claim 2, characterized in that, The driving component also includes: case; A drive shaft assembly, movably mounted in the housing, wherein the second drive shaft is disposed within the drive shaft assembly; and A coil assembly is mounted on the housing, the coil assembly having a through slot extending along a first direction, the drive shaft assembly passing through the through slot, and the coil assembly being used to drive the second drive shaft to vibrate under the action of electricity.

4. The electric toothbrush as described in claim 2, characterized in that, The first drive shaft has a mounting portion, a limiting portion, and a drive portion arranged sequentially along a first direction; the mounting portion is located at one end of the limiting portion near the drive assembly, the mounting portion and the limiting portion are housed in the handle, and the drive portion extends at least partially out of the handle; the ultrasonic transducer is mounted on the mounting portion, and one end of the mounting portion away from the limiting portion is connected to the second drive shaft through the connector; the brush head is connected to the drive portion.

5. The electric toothbrush as described in claim 4, characterized in that, The outer diameter of the limiting part gradually increases from the driving part toward the mounting part.

6. The electric toothbrush as described in claim 1, characterized in that, At least two ultrasonic transducers are arranged sequentially along the first direction.

7. The electric toothbrush as described in claim 1, characterized in that, The brush head has an amplitude lever, which is driven to the first drive shaft.

8. The electric toothbrush as described in claim 7, characterized in that, The brush head also includes a brush head body having a receiving cavity facing the opening of the first drive shaft, the amplitude rod being inserted into the receiving cavity, the first drive shaft extending at least partially into the receiving cavity and being detachably connected to the end of the amplitude rod near the opening.

9. The electric toothbrush as described in claim 8, characterized in that, The amplitude rod has a protrusion, and the outer surface of the brush head body has a first area for setting bristles. The bottom wall of the first area has a through hole communicating with the accommodating cavity, and the protrusion extends out of the first area through the through hole.

10. The electric toothbrush as described in any one of claims 1 to 9, characterized in that, The electric toothbrush also includes a circuit assembly, and the driving device and the ultrasonic transducer are respectively electrically connected to the circuit assembly.

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