An ultrasonic toothbrush transducer

Abstract

The application discloses an ultrasonic toothbrush transducer, which belongs to the toothbrush field and comprises a shell, a brush head is mounted on the outside of the shell, an ultrasonic transducer is mounted in the shell, a variable amplitude rod is fixedly connected to the top of the ultrasonic transducer, an inclined groove is formed in the outside of the variable amplitude rod, the top of the variable amplitude rod is connected with the brush head, and a protective cover for positioning the ultrasonic transducer is mounted on the inner wall of the shell. The ultrasonic transducer is arranged to replace the conventional motor vibration, high-frequency vibration of 30 kHz is achieved, and because of the unique vibration mode of the ultrasonic transducer, the user has an excellent experience, a mute effect can be achieved, and zero vibration feeling is achieved. The inclined groove design is added to the position of the variable amplitude rod, so that the brush head has axial movement and movement in the vibration direction.

Description

Technical Field

[0001] This application relates to the field of toothbrush technology, and more particularly to an ultrasonic toothbrush transducer. Background Technology

[0002] Ultrasonic toothbrush transducers combine piezoelectric materials and electrical energy conversion technology to achieve deep cleaning of teeth and gums by efficiently converting electrical energy into ultrasonic vibration energy of a specific frequency. This technology has important applications in multiple interdisciplinary fields such as acoustic vibration, electromechanical energy conversion, and oral care equipment manufacturing.

[0003] Traditional electric toothbrushes (such as sonic and rotary types) rely on mechanical friction for cleaning, with a friction coefficient as high as 0.6-0.8. Long-term use leads to enamel wear of 5-15μm per year and gingival recession of more than 2mm per year. While vibrating electric toothbrushes improve cleaning efficiency, the vibrating angle generally exceeds 60°, far exceeding the scientific range of 3-9° recommended by dentists, which leads to the risk of loose teeth. Moreover, current technology uses hollow cup motors, which have rapid power decay, high noise, short lifespan, and a failure rate of >15%.

[0004] Therefore, this application proposes an ultrasonic toothbrush transducer. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides an ultrasonic toothbrush transducer, which overcomes the shortcomings of the prior art and aims to solve the problems in the background art.

[0006] To achieve the above objectives, this application adopts the following technical solution: an ultrasonic toothbrush transducer, including a housing, a brush head installed on the outside of the housing, an ultrasonic transducer installed inside the housing, an amplitude transformer fixedly connected to the top of the ultrasonic transducer, an inclined groove opened on the outside of the amplitude transformer, the top of the amplitude transformer being connected to the brush head, and a protective cover for positioning the ultrasonic transducer installed on the inner wall of the housing.

[0007] In a preferred embodiment, a base is installed at the bottom of the housing, two pins are symmetrically installed at the top of the base, and two mating grooves are symmetrically opened at the bottom of the housing, with the two pins adapted to be inserted into the inner walls of the two mating grooves.

[0008] By adopting the above technical solution, the two pins can be inserted into the inner walls of the two mating slots to stably install the outer shell on the top of the base, achieving quick assembly and ensuring the tightness of the connection after assembly.

[0009] In a preferred embodiment, a mounting plate is installed on the inner bottom of the housing, a positioning cover is installed on the top of the mounting plate, a battery is installed inside the positioning cover, and the battery is electrically connected to the ultrasonic transducer.

[0010] By adopting the above technical solution, the positioning cover can be used to position the battery, ensuring that the battery can be stably placed inside the casing, and ensuring that the battery will not easily shake or shift position no matter what the device is placed in.

[0011] In a preferred embodiment, the protective cover has an opening in the middle, the bottom of the amplitude rod is located inside the opening, two insertion holes are symmetrically opened on both sides of the protective cover, and two positioning pins are symmetrically installed inside the outer shell, with the two positioning pins being adapted to be inserted into the inner wall of the insertion hole.

[0012] By adopting the above technical solution, it is possible to pre-position the protective cover, ensure the stability of the protective cover when it is installed inside the shell, and facilitate the subsequent tightening of bolts.

[0013] In a preferred embodiment, the inner wall of the protective cover is threaded with four bolts, and the bottom ends of the four bolts are threaded to the inner wall of the outer shell.

[0014] By adopting the above technical solution, the protective cover can be stably installed on the inner wall of the outer shell using bolts, thereby enabling the ultrasonic transducer to be stably positioned and ensuring the stability of the ultrasonic transducer during operation.

[0015] In a preferred embodiment, a USB charging port is mounted on the outer edge of the housing, and the USB charging port is electrically connected to the battery.

[0016] By adopting the above technical solution, the USB charging interface can be connected to the charging cable, which can then be used to charge the battery and maintain its internal power.

[0017] In a preferred embodiment, a positioning assembly is installed inside the housing. The positioning assembly includes a control frame, which is installed inside the housing. Three docking rods are installed on the outside of the control frame, and the three docking rods are inserted into the inner wall of a pre-drilled hole in the inner wall of the housing. A bearing is installed on the top of the control frame.

[0018] By adopting the above technical solution, the upper position of the luffing boom can be positioned during operation, ensuring the stability of the luffing boom when transmitting kinetic energy.

[0019] In a preferred embodiment, a rubber ring is installed on the inner ring of the bearing, and the amplitude rod is rotatably connected to the inner wall of the rubber ring.

[0020] By adopting the above technical solutions, the noise generated by the luffing boom during operation can be reduced, and the flexible connection can reduce wear and increase service life.

[0021] The beneficial effects of this application are: This ultrasonic toothbrush transducer replaces traditional motor vibration with an ultrasonic transducer, achieving a high-frequency vibration of 30kHz. Due to the unique vibration mode of the ultrasonic transducer, it offers excellent user experience, achieving a silent effect with zero vibration. The addition of a slanted groove design at the amplitude transformer position allows the brush head to move simultaneously in the axial direction and its sweeping direction.

[0022] This ultrasonic toothbrush transducer uses a positioning cover to position the battery, ensuring that the battery is stably placed inside the casing and that the battery will not easily shake or shift position regardless of the device's placement. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the amplitude transformer structure of this application; Figure 3 This is a schematic diagram of the unfolded structure of this application; Figure 4 This is a schematic diagram of the positioning cover structure of this application; Figure 5 This is a schematic diagram of the cross-sectional structure of the outer shell of this application.

[0024] The following are the labels in the diagram: 1. Outer shell; 2. Brush head; 3. Base; 4. Pin; 5. Mounting plate; 6. Battery; 7. Ultrasonic transducer; 8. Amplitude bar; 9. Inclined groove; 10. Protective cover; 11. Opening; 12. Bolt; 13. Insertion hole; 14. Positioning pin; 15. Positioning cover; 16. Control frame; 17. Connecting rod; 18. Bearing; 19. Rubber ring. Detailed Implementation

[0025] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0026] Reference Figure 1-5 An ultrasonic toothbrush transducer includes a housing 1, a brush head 2 installed on the outside of the housing 1, an ultrasonic transducer 7 installed inside the housing 1, an amplitude transformer 8 fixedly connected to the top of the ultrasonic transducer 7, an inclined groove 9 opened on the outside of the amplitude transformer 8, the top of the amplitude transformer 8 being connected to the brush head 2, and a protective cover 10 for positioning the ultrasonic transducer 7 installed on the inner wall of the housing 1.

[0027] See Figure 1 - Figure 4The bottom of the outer shell 1 is equipped with a base 3, and two pins 4 are symmetrically installed on the top of the base 3. Two mating slots are symmetrically opened on the bottom of the outer shell 1. The two pins 4 are adapted to be inserted into the inner wall of the two mating slots, so that the two pins 4 can be inserted into the inner wall of the two mating slots to stably install the outer shell 1 on the top of the base 3, realize quick assembly, and ensure the tightness of the connection after assembly.

[0028] See Figure 3 and Figure 4 An installation plate 5 is installed at the bottom of the inner shell 1, and a positioning cover 15 is installed on the top of the installation plate 5. A battery 6 is installed inside the positioning cover 15. The battery 6 is electrically connected to the ultrasonic transducer 7, so that the positioning cover 15 can be used to position the battery 6, ensuring that the battery 6 can be stably placed inside the shell 1, and ensuring that the battery 6 will not easily shake or shift its position no matter what the device is placed in.

[0029] See Figure 3 The protective cover 10 has an opening 11 in the middle, and the bottom of the amplitude rod 8 is located inside the opening 11. Two insertion holes 13 are symmetrically opened on both sides of the protective cover 10. Two positioning pins 14 are symmetrically installed inside the outer shell 1. The two positioning pins 14 are adapted to be inserted into the inner wall of the insertion hole 13, so that the protective cover 10 can be pre-positioned, ensuring the stability of the protective cover 10 when it is installed inside the outer shell 1, and facilitating the subsequent tightening of the bolts 12.

[0030] See Figure 2 and Figure 3 The inner wall of the protective cover 10 is threaded with four bolts 12, and the bottom ends of the four bolts 12 are threaded to the inner wall of the outer shell 1, so that the protective cover 10 can be stably installed on the inner wall of the outer shell 1 using the bolts 12, thereby allowing the ultrasonic transducer 7 to be stably positioned using the protective cover 10, ensuring the stability of the ultrasonic transducer 7 during operation.

[0031] See Figure 1 - Figure 4 A USB charging port is installed on the outer edge of the outer casing 1, and the USB charging port is electrically connected to the battery 6, so that the USB charging port can be connected to the charging cable, and can be used to charge the battery 6 to maintain the internal power.

[0032] See Figure 5 The housing 1 is equipped with a control assembly, which includes a control frame 16. The control frame 16 is installed inside the housing 1. Three docking rods 17 are installed on the outside of the control frame 16 and are inserted into the inner wall of the housing 1 through a pre-drilled hole. A bearing 18 is installed on the top of the control frame 16, which can be used to position the upper end of the amplitude rod 8 during operation, ensuring the stability of the amplitude rod 8 when transmitting kinetic energy.

[0033] See Figure 5 The inner ring of the bearing 18 is fitted with a rubber ring 19, and the amplitude rod 8 is rotatably connected to the inner wall of the rubber ring 19, which can reduce the noise generated by the amplitude rod 8 during operation. The flexible connection can reduce wear and improve service life.

[0034] Working principle: First, the battery 6 can be installed inside the positioning cover 15, and the ultrasonic transducer 7 can be installed inside the protective cover 10. Then, the protective cover 10 can be installed inside the outer shell 1 until the positioning pin 14 is inserted into the inner wall of the socket 13. Further, the bottom of the protective cover 10 can be abutted against the top of the battery 6. Then, the bolt 12 can be tightened to the inner wall of the protective cover 10 to securely connect the protective cover 10 and the outer shell 1. Then, the ultrasonic transducer 7 can be driven to generate a 30kHz high-frequency vibration. The vibration is amplified by the amplitude transformer 8 and converted into a composite motion of axial and sweeping direction. Simultaneously, the brush head 2 transmits the vibration energy to the tooth surface to achieve deep cleaning.

[0035] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. An ultrasonic toothbrush transducer, comprising a housing (1), characterized in that, A brush head (2) is installed on the outside of the housing (1), and an ultrasonic transducer (7) is installed inside the housing (1). An amplitude transformer (8) is fixedly connected to the top of the ultrasonic transducer (7). An inclined groove (9) is opened on the outside of the amplitude transformer (8). The top of the amplitude transformer (8) is connected to the brush head (2). A protective cover (10) for positioning the ultrasonic transducer (7) is installed on the inner wall of the housing (1).

2. An ultrasonic toothbrush transducer according to claim 1, characterized in that, The bottom of the outer shell (1) is equipped with a base (3), and two pins (4) are symmetrically installed on the top of the base (3). Two docking slots are symmetrically opened on the bottom of the outer shell (1), and the two pins (4) are adapted to be inserted into the inner wall of the two docking slots.

3. An ultrasonic toothbrush transducer according to claim 1, characterized in that, An installation plate (5) is installed on the inner bottom of the outer shell (1), and a positioning cover (15) is installed on the top of the installation plate (5). A battery (6) is installed inside the positioning cover (15), and the battery (6) is electrically connected to the ultrasonic transducer (7).

4. An ultrasonic toothbrush transducer according to claim 1, characterized in that, The protective cover (10) has an opening (11) in the middle, and the bottom of the amplitude rod (8) is located inside the opening (11). Two insertion holes (13) are symmetrically opened on both sides of the protective cover (10). Two positioning pins (14) are symmetrically installed inside the outer shell (1). The two positioning pins (14) are adapted to be inserted into the inner wall of the insertion hole (13).

5. An ultrasonic toothbrush transducer according to claim 1, characterized in that, The inner wall of the protective cover (10) is threaded with four bolts (12), and the bottom ends of the four bolts (12) are threaded to the inner wall of the outer shell (1).

6. An ultrasonic toothbrush transducer according to claim 1, characterized in that, A USB charging interface is installed on the outer edge of the outer casing (1), and the USB charging interface is electrically connected to the battery (6).

7. An ultrasonic toothbrush transducer according to claim 1, characterized in that, The housing (1) is equipped with a control assembly, which includes a control frame (16). The control frame (16) is installed inside the housing (1). Three docking rods (17) are installed on the outside of the control frame (16), and the three docking rods (17) are inserted into the inner wall of the reserved hole in the inner wall of the housing (1). A bearing (18) is installed on the top of the control frame (16).

8. An ultrasonic toothbrush transducer according to claim 7, characterized in that, The bearing (18) has a rubber ring (19) installed on its inner ring, and the amplitude rod (8) is rotatably connected to the inner wall of the rubber ring (19).

Images