Electric toothbrush with sound wave somatosensory vibrator

Abstract

The invention provides an electric toothbrush with a sound wave somatosensory vibrator. The electric toothbrush comprises a toothbrush main body and a brush head, the toothbrush main body comprises a shell and a vibration device; the vibration device comprises an audio resonator, a magnetic assembly and a power amplifier control board. The audio resonator is respectively connected with the magnetic assembly and the power amplifier control board; the audio resonator comprises a vibration support, and a voice coil, a resonance member, a first elastic sheet and a second elastic sheet which are arranged in the vibration support. The voice coil is connected with the bottom of the resonance piece, the top of the resonance piece is connected with a driving shaft, and the driving shaft extends out of the shell and is used for being connected with a brush head; the first elastic piece and the second elastic piece are arranged on the resonance piece in a sleeving mode, and the first elastic piece and the second elastic piece are both connected with the vibration support. The first elastic piece and the second elastic piece are arranged at an interval, the first elastic piece is close to the top of the resonance piece, and the second elastic piece is close to the bottom of the resonance piece; and the first elastic sheet and the second elastic sheet are two elastic sheet structures with different hardness.

Description

Technical Field

[0001] The present invention relates to the technical field of electric toothbrushes, and particularly to a sonic body-sensing oscillator electric toothbrush. Background Art

[0002] An electric toothbrush is an oral cleaning tool that drives the brush head to vibrate or rotate through electricity to achieve tooth cleaning. Most common electric toothbrushes on the market currently adopt an eccentric motor drive method. The eccentric motor drives the entire body to vibrate through the centrifugal force of the eccentric wheel, thereby realizing the vibration of the brush head. However, the eccentric motor also has some limitations. For example, the motor vibration is single and fixed-point vibration. The drive method of the eccentric motor results in inconsistent vibration intensities in different directions. When the vibration intensity is weak, it cannot effectively clean the teeth, while when the vibration intensity is too large, it may damage the teeth and gums. Moreover, the eccentric motor generates relatively large noise during operation, affecting the user experience. Summary of the Invention

[0003] The present invention aims to solve the problem that the cleaning effect of existing electric toothbrushes is poor due to inconsistent vibration intensities, and thus provides a sonic body-sensing oscillator electric toothbrush. The sonic body-sensing vibration can be transmitted in all directions, and the cleaning effect is better.

[0004] To solve the above technical problems, the present invention provides a sonic body-sensing oscillator electric toothbrush, including a toothbrush main body and a brush head; the toothbrush main body includes a housing and a vibration device installed in the housing; the vibration device includes an audio resonator, a magnetic component, and a power amplifier control board; the audio resonator is respectively connected to the magnetic component and the power amplifier control board;

[0005] The audio resonator includes a vibration bracket and a voice coil, a resonance member, a first elastic sheet, and a second elastic sheet arranged in the vibration bracket; the voice coil is connected to the bottom of the resonance member, and a drive shaft is connected to the top of the resonance member. The drive shaft extends out of the housing for connection with the brush head;

[0006] The first elastic sheet and the second elastic sheet are sleeved on the resonance member, and both the first elastic sheet and the second elastic sheet are connected to the vibration bracket; the first elastic sheet and the second elastic sheet are arranged at intervals. The first elastic sheet is close to the top of the resonance member, and the second elastic sheet is close to the bottom of the resonance member;

[0007] The first elastic sheet and the second elastic sheet are two elastic sheet structures with different hardnesses.

[0008] In a preferred embodiment, the magnetic component includes a U-shaped iron, a magnet, and a magnetic conduction sheet, and the U-shaped iron is connected to the vibration bracket;

[0009] The U iron has an installation cavity with a U-shaped cross section and an opening; the opening of the installation cavity faces the voice coil, and the magnet and the magnetic conductive sheet are both placed in the installation cavity.

[0010] In a preferred embodiment, the magnetic conductive sheet is disposed on a surface of the magnet facing the voice coil; a gap exists between the magnetic conductive sheet and the magnet and an inner wall of the mounting cavity, and the voice coil is partially disposed in the gap.

[0011] In a preferred embodiment, the U iron includes a convex edge, a first notch is provided at the bottom of the vibration bracket, and a second notch is provided on the convex edge corresponding to the first notch; the convex edge is connected to the bottom of the vibration bracket, and the first notch and the second notch constitute a wire passing notch;

[0012] A wiring board is arranged on the side of the convex edge away from the vibration bracket, and the voice coil is connected to the wiring board through the wire-passing slot; the wiring board is connected to the power amplifier control board; and the power amplifier control board is connected to a power supply.

[0013] In a preferred embodiment, the housing includes an upper shell and a lower shell, and the inner walls of the upper shell and the lower shell are both protrudingly provided with a first clamping portion and a second clamping portion, and the first clamping portion and the second clamping portion of the upper shell are located corresponding to the first clamping portion and the second clamping portion of the lower shell;

[0014] After the upper shell and the lower shell are engaged with each other, the corresponding two first clamping parts and the second clamping parts are connected to form an annular first clamping ring and a second clamping ring;

[0015] After the upper shell and the lower shell are clamped together, the first clamp ring and the second clamp ring are clamped on the top and the bottom of the vibration bracket respectively, and the vibration bracket is clamped and fixed in the shell by the first clamp ring and the second clamp ring.

[0016] In a preferred embodiment, the edge of the first elastic sheet is connected to the top of the vibration bracket, and a supporting sheet is provided on the edge of the first elastic sheet, and the supporting sheet is used to cooperate with the first clamping ring.

[0017] In a preferred embodiment, the vibration bracket includes an upper bracket and a lower bracket, the upper bracket is connected to the lower bracket, and the second elastic sheet is connected and fixed at the connection between the upper bracket and the lower bracket.

[0018] In a preferred embodiment, the first spring sheet, the second spring sheet and the resonance member are integrally or separately arranged; and the resonance member is an aluminum member.

[0019] In a preferred embodiment, the first spring piece and the second spring piece are circular or ring-shaped; the first spring piece and the second spring piece are two spring piece structures with different diameters;

[0020] The materials of the first elastic piece and the second elastic piece are plastic materials, metal materials or composite organic materials.

[0021] In a preferred embodiment, the housing includes a through hole for the driving shaft to extend out, and a sealing silica gel sleeve is assembled between the through hole and the driving shaft.

[0022] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0023] 1. Through the technology of acoustic vibration, two elastic piece structures with different hardnesses are configured, which can clean teeth comprehensively and without dead angles, effectively remove dental plaque and stains, prevent oral diseases, and effectively improve the cleaning effect.

[0024] 2. The first elastic piece and the second elastic piece with different hardnesses are adopted, one vibrates and the other pulls, the elastic stroke is larger, the elastic force and the pulling force are stronger, which can clean teeth comprehensively and without dead angles, and at the same time improve the durability and anti-fatigue performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall view of the electric toothbrush in the preferred embodiment of the present invention;

[0026] Figure 2 It is an overall cross-sectional view of the electric toothbrush in the preferred embodiment of the present invention;

[0027] Figure 3 It is an overall view of the vibration device in the preferred embodiment of the present invention;

[0028] Figure 4 It is an overall cross-sectional view of the vibration device in the preferred embodiment of the present invention;

[0029] Figure 5 It is a schematic installation view of the first elastic piece and the second elastic piece in the preferred embodiment of the present invention;

[0030] Figure 6 It is a structural diagram of the second elastic piece in the preferred embodiment of the present invention;

[0031] Figure 7 It is a structural diagram of the first elastic piece in the preferred embodiment of the present invention.

[0032] Description of reference numerals: 1. Housing; 11. Upper shell; 12. Lower shell; 13. First snap ring; 14. Second snap ring; 15. Through hole; 2. Vibration device; 21. Audio resonator; 211. Vibration bracket; 2111. First notch; 2112. Upper bracket; 2113. Lower bracket; 212. Voice coil; 213. Resonating member; 214. First elastic piece; 2141. Hollow opening; 215. Second elastic piece; 2151. Z-shaped opening; 216. Drive shaft; 217. Support piece; 22. Magnetic assembly; 221. U-shaped iron; 2211. Installation cavity; 2212. Gap; 2213. Flange; 2214. Second notch; 222. Magnet; 223. Magnetic conduction sheet; 224. Wiring board; 3. Brush head; 4. Silicone sleeve. Detailed implementation manners

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a wall-mounted connection, a detachable connection, or an integral connection, can be a mechanical connection, can be an electrical connection, can be directly connected, or can be indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] As Figure 1 , this embodiment provides a sonic body-sensing oscillator electric toothbrush, including a toothbrush main body and a brush head 3; As Figure 2, the toothbrush body includes a housing 1 and a vibration device 2 installed inside the housing 1; the vibration device 2 includes an audio resonator 21, a magnetic component 22 and a power amplifier control board; the audio resonator 21 is respectively connected to the magnetic component 22 and the power amplifier control board; as Figure 4 , the audio resonator 21 includes a vibration bracket 211 and a voice coil 212, a resonance member 213, a first elastic sheet 214 and a second elastic sheet 215 arranged inside the vibration bracket 211; the voice coil 212 is connected to the bottom of the resonance member 213, and a drive shaft 216 is connected to the top of the resonance member 213, and the drive shaft 216 extends out of the housing 1 for connecting with the toothbrush head 3; the drive shaft 216 and the toothbrush head 3 are provided with a clamping connection, which simplifies the toothbrush assembly process and improves production efficiency.

[0037] The first elastic sheet 214 and the second elastic sheet 215 are sleeved on the resonance member 213, as Figure 5 , the first elastic sheet 214 and the second elastic sheet 215 are both connected to the vibration bracket 211; the first elastic sheet 214 and the second elastic sheet 215 are arranged at intervals, the first elastic sheet 214 is close to the top of the resonance member 213, and the second elastic sheet 215 is close to the bottom of the resonance member 213; the first elastic sheet 214 and the second elastic sheet 215 are two elastic sheet structures with different hardnesses to achieve better vibration effects and support performance. The double elastic sheet structure can provide better damping effects during vibration, reducing unnecessary vibrations and noises.

[0038] Through sonic vibration technology, an all-round, efficient and comfortable tooth cleaning effect is achieved. The toothbrush body of this electric toothbrush is built-in with a unique vibration device 2, which adopts the collaborative work of an audio resonator 21, a magnetic component 22 and a power amplifier control board, and cooperates with the double elastic sheet design of different hardnesses to provide excellent cleaning performance and user experience.

[0039] The first elastic sheet 214 and the second elastic sheet 215 are integrally or separately arranged with the resonance member 213; the resonance member 213 is an aluminum part. Preferably, the first elastic sheet 214 and the second elastic sheet 215 are integrally arranged with the resonance member 213, which reduces stress concentration, reduces the risk of failure, extends the service life of the product, and has a simpler process, greater power tolerance, effectively reduces costs and improves product stability.

[0040] The first elastic sheet 214 and the second elastic sheet 215 are circular or annular, and the first elastic sheet 214 and the second elastic sheet 215 are two elastic sheet structures with different diameters. Adopting a double elastic sheet structure with different sizes and hardnesses, one vibrates and the other pulls, with a greater elastic travel, stronger elastic force and pulling force, which can clean teeth comprehensively without dead corners, and at the same time improve durability and anti-fatigue performance.

[0041] In this embodiment, the first elastic piece 214 and the second elastic piece 215 can be made of plastic material, metal material, composite organic material, etc., with better elasticity, higher fatigue resistance, and stronger durability. The first elastic piece 214 is connected to the top of the resonance member 213, and the second elastic piece 215 is connected to the bottom of the resonance member 213 and is also connected to the voice coil 212 at the same time. The hardness and diameter of the first elastic piece 214 are both larger than those of the second elastic piece 215. As Figure 6 , the second elastic piece 215 is provided with a Z-shaped opening 2151 that is rotationally symmetric, and two adjacent Z-shaped openings 2151 in the radial direction partially overlap, as Figure 7 , the first elastic piece 214 adopts a circular hollow structure, and hollow openings 2141 are evenly distributed along the circumference on the first elastic piece 214. The shapes and structures of the first elastic piece 214 and the second elastic piece 215 are different, and with different hardnesses, the first elastic piece 214 has a high hardness and plays a supporting role, while the second elastic piece 215 has a low hardness and plays a vibrating role. The first elastic piece 214 and the second elastic piece 215 coordinate with each other to ensure that the vibration intensity of the electric toothbrush is consistent. The sound wave vibration is transmitted in all directions through the double-elastic-piece structure, and a cleaning effect without dead angles can be achieved. This all-round vibration design not only improves the cleaning efficiency but also better simulates the natural sound wave vibration.

[0042] In this embodiment, the magnetic assembly 22 includes a U-shaped iron 221, a magnet 222, and a magnetic conduction sheet 223. The U-shaped iron 221 is connected to the vibration bracket 211; as Figure 4 , the U-shaped iron 221 has an installation cavity 2211 with a U-shaped cross-section and an open shape; the opening of the installation cavity 2211 faces the voice coil 212, and both the magnet 222 and the magnetic conduction sheet 223 are placed in the installation cavity 2211. And the magnetic conduction sheet 223 is arranged on the surface of the magnet 222 facing the voice coil 212; there is a gap 2212 between the magnetic conduction sheet 223 and the magnet 222 and the inner wall of the installation cavity 2211, and a part of the voice coil 212 is placed in the gap 2212. This gap 2212 serves as a voice gap to provide space for the vibration of the voice coil 212.

[0043] When an alternating current is passed through the voice coil 212, the magnetic field generated by it interacts with the magnetic field of the magnet, causing the voice coil 212 to vibrate back and forth in the magnetic field. This vibration is transmitted to the brush head 3 through the resonance member 213, thereby realizing high-frequency vibration and achieving the effect of cleaning teeth. The U-shaped iron 221 and the magnet 222 mainly play the role of providing a stable magnetic field, the role of the magnetic conduction sheet 223 is to guide and enhance the magnetic field and improve the vibration efficiency, and the U-shaped iron 221 plays the role of conducting magnetism.

[0044] The U-shaped iron 221 and the magnet 222 use a combination of neodymium iron boron and ferrite, which significantly enhances the magnetism. This combination not only increases the magnetic field strength but also optimizes the performance of the vibration system, enabling it to convert electrical energy into mechanical vibration more efficiently.

[0045] like Figure 3 The U iron 221 includes a convex edge 2213, a first notch 2111 is provided at the bottom of the vibration bracket 211, and a second notch 2214 is provided on the convex edge 2213 corresponding to the first notch 2111; the convex edge 2213 is connected to the bottom of the vibration bracket 211, and the first notch 2111 and the second notch 2214 constitute a wire-passing notch; a wiring board 224 is provided on the side of the convex edge 2213 away from the vibration bracket 211, and the voice coil 212 is connected to the wiring board 224 through the wire-passing notch; the wiring board 224 is connected to the power amplifier control board; the power amplifier control board is connected to a power supply, and the power supply adopts a built-in rechargeable battery. Provide stable connection and power supply to ensure stable and reliable operation of the product.

[0046] The power amplifier control board is the driving core of the vibration device 2. It can adjust the frequency according to different needs, has high compatibility, and has a strong vibration sensation. It can be connected to various types of power amplifiers, such as Class A power amplifier, Class B power amplifier, Class AB power amplifier, and Class D power amplifier, to provide stable power support for the audio resonator 21. The vibration frequency can be customized, and the effective frequency range of the sound wave is 20Hz-1kHz. It can be customized according to different user needs and cleaning modes, and has stronger compatibility.

[0047] like Figure 2 The installation structure of the audio resonator 21 in the housing 1 is as follows: the housing 1 includes an upper housing 11 and a lower housing 12, and the inner walls of the upper housing 11 and the lower housing 12 are both protrudingly provided with a first clamping portion and a second clamping portion, and the first clamping portion and the second clamping portion of the upper housing 11 correspond to the first clamping portion and the second clamping portion of the lower housing 12; after the upper housing 11 and the lower housing 12 are engaged with each other, the corresponding two first clamping portions and the second clamping portions are connected to form an annular first clamping ring 13 and a second clamping ring 14 for fixing the vibration bracket 211. After the upper housing 11 and the lower housing 12 are engaged, the first clamping ring 13 and the second clamping ring 14 are respectively clamped at the top and the bottom of the vibration bracket 211, and the vibration bracket 211 is clamped and fixed in the housing 1 by the first clamping ring 13 and the second clamping ring 14.

[0048] like Figure 2, the edge of the first elastic piece 214 is connected to the top of the vibration bracket 211. A support piece 217 is arranged on the edge of the first elastic piece 214, and the support piece 217 is used for being clamped and connected with the first snap ring 13. The vibration bracket 211 includes an upper bracket 2112 and a lower bracket 2113. The upper bracket 2112 is connected to the lower bracket 2113, and the second elastic piece 215 is fixedly connected at the connection of the upper bracket 2112 and the lower bracket 2113. The arrangement of the support piece 217 can avoid the direct contact between the first elastic piece 214 and the housing 1, and avoid the damage of the first elastic piece 214 caused by stress concentration.

[0049] As Figure 2 , the housing 1 includes a through hole 15 for the driving shaft 216 to extend out. A sealing silica gel sleeve 4 is assembled between the through hole 15 and the driving shaft 216 to ensure the sealing and waterproof performance of the product.

[0050] As mentioned above, only the preferred specific embodiments of the present invention are described, but the design concept of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, making non-substantive modifications to the present invention using this concept, shall fall within the scope of infringement of the protection of the present invention.

Claims

1. An electric toothbrush with a sonic sensor vibrator, characterized in that: It comprises a toothbrush body and a brush head; the toothbrush body comprises a shell and a vibration device installed in the shell; the vibration device comprises an audio resonator, a magnetic component and a power amplifier control board; the audio resonator is connected to the magnetic component and the power amplifier control board respectively; The audio resonator includes a vibration bracket and a voice coil, a resonance member, a first spring and a second spring arranged in the vibration bracket; the voice coil is connected to the bottom of the resonance member, the top of the resonance member is connected to a driving shaft, and the driving shaft extends out of the housing to be connected to the brush head; The first spring sheet and the second spring sheet are sleeved on the resonance member, and both the first spring sheet and the second spring sheet are connected to the vibration bracket; the first spring sheet and the second spring sheet are arranged at intervals, the first spring sheet is close to the top of the resonance member, and the second spring sheet is close to the bottom of the resonance member; The first spring sheet and the second spring sheet are two spring sheet structures with different hardness.

2. The sonic wave vibrator electric toothbrush according to claim 1, characterized in that: The magnetic assembly includes a U iron, a magnet and a magnetic conductive sheet, and the U iron is connected to the vibration bracket; The U iron has an installation cavity with a U-shaped cross section and an opening; the opening of the installation cavity faces the voice coil, and the magnet and the magnetic conductive sheet are both placed in the installation cavity.

3. The sonic wave vibrator electric toothbrush according to claim 2, characterized in that: The magnetic conductive sheet is arranged on a surface of the magnet facing the voice coil; there is a gap between the magnetic conductive sheet and the magnet and the inner wall of the installation cavity, and the voice coil is partially placed in the gap.

4. The sonic wave vibrator electric toothbrush according to claim 2, characterized in that: The U iron includes a convex edge, a first notch is provided at the bottom of the vibration bracket, and a second notch is provided on the convex edge corresponding to the first notch; the convex edge is connected to the bottom of the vibration bracket, and the first notch and the second notch constitute a wire passing notch; A wiring board is arranged on the side of the convex edge away from the vibration bracket, and the voice coil is connected to the wiring board through the wire-passing slot; the wiring board is connected to the power amplifier control board; and the power amplifier control board is connected to a power supply.

5. The sonic wave vibrator electric toothbrush according to claim 1, characterized in that: The housing comprises an upper shell and a lower shell, the inner walls of the upper shell and the lower shell are both protrudingly provided with a first clamping portion and a second clamping portion, and the positions of the first clamping portion and the second clamping portion of the upper shell correspond to the first clamping portion and the second clamping portion of the lower shell; After the upper shell and the lower shell are engaged with each other, the corresponding two first clamping parts and the second clamping parts are connected to form an annular first clamping ring and a second clamping ring; After the upper shell and the lower shell are clamped together, the first clamp ring and the second clamp ring are clamped on the top and the bottom of the vibration bracket respectively, and the vibration bracket is clamped and fixed in the shell by the first clamp ring and the second clamp ring.

6. The sonic wave vibrator electric toothbrush according to claim 5, characterized in that: The edge of the first elastic piece is connected to the top of the vibration bracket, and a supporting piece is arranged on the edge of the first elastic piece, and the supporting piece is used to cooperate with the first clamping ring for clamping.

7. The sonic wave vibrator electric toothbrush according to claim 6, characterized in that: The vibration bracket includes an upper bracket and a lower bracket, the upper bracket is connected to the lower bracket, and the second elastic sheet is connected and fixed at the connection between the upper bracket and the lower bracket.

8. The sonic wave vibrator electric toothbrush according to claim 1, characterized in that: The first spring sheet, the second spring sheet and the resonance component are integrally or separately arranged; the resonance component is an aluminum component.

9. The sonic wave vibrator electric toothbrush according to claim 8, characterized in that: The first spring piece and the second spring piece are circular or annular; the first spring piece and the second spring piece are two spring piece structures with different diameters; The first spring piece and the second spring piece are made of plastic material, metal material or composite organic material.

10. The sonic wave vibrator electric toothbrush according to claim 1, characterized in that: The shell comprises a through hole for the driving shaft to extend out, and a sealing silicone sleeve is arranged between the through hole and the driving shaft.

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