Ultrasonic teeth cleaning device

Abstract

The present invention relates to the technical field of oral cleaning devices, and in particular to a novel ultrasonic tooth cleaning device, comprising a tool head and an ultrasonic transducer fixedly connected to the tool head, the ultrasonic transducer comprising an intermediate plate, the intermediate plate being provided with at least one piezoelectric ceramic sheet, the tool head being connected with a detachable toothbrush head or tooth cleaning head, and the vibration frequency range of the ultrasonic transducer being between 10 kHz and 100 kHz. The present invention can be installed and used for both a toothbrush head and a tooth cleaning head, and utilizes a mature piezoelectric ceramic dual-chip structure as an ultrasonic transducer to maintain the vibration frequency between 10 kHz and 100 kHz, thereby ensuring a good tooth cleaning effect and significantly reducing production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of oral cleaning devices, and in particular to an ultrasonic teeth cleaning device. Background Art

[0002] The history of using toothbrushes to clean teeth is long, mainly through the friction between the bristles and the tooth surface to remove dirt and germs on the tooth surface, but it is not very effective for dirt and germs in places that the bristles cannot reach, such as the gaps between teeth. For a long time, ordinary toothbrushes and electric toothbrushes have been popular on the market. The cleaning principles of ordinary toothbrushes and electric toothbrushes are the same, both of which clean teeth by friction between the bristles and the tooth surface. In terms of tooth cleaning operation, ordinary toothbrushes generally actively brush up and down, that is, vertical brushing, while the vibration frequency and strength of electric toothbrushes are relatively fixed. When rotating, they are similar to horizontal brushing on the tooth surface, which may cause certain wear and tear on the teeth. In recent years, sonic toothbrushes and ultrasonic toothbrushes have also appeared on the market. Sonic toothbrushes are actually also a kind of electric toothbrush, but the vibration frequency of sonic toothbrushes is higher than that of electric toothbrushes, which can reach 670 Hz. Its cleaning effect is between electric toothbrushes and ultrasonic toothbrushes, and is slightly better than ordinary toothbrushes and electric toothbrushes. An ultrasonic toothbrush is a toothbrush developed using ultrasonic technology. It emits ultrasonic energy through an ultrasonic transducer, and uses ultrasonic energy to produce a cavitation effect in the periodontium to remove periodontal germs and impurities. It does not require brushing or rubbing teeth. The bristles are used to transmit ultrasonic waves instead of rubbing teeth. It is gentler and painless to sensitive teeth and gums, and cleans more deeply. Its cleaning range can cover all parts of the periodontium. However, currently ultrasonic toothbrushes are mainly found in developed countries. They are expensive, and the ultrasonic waves they produce have a high frequency and low power density. It is difficult to reach the critical point of the cavitation effect, and it is difficult to achieve the effect of ultrasonic cleaning of teeth. Summary of the invention

[0003] The purpose of the present invention is to address the deficiencies in the prior art and provide an ultrasonic teeth cleaning device that can be installed and used with a toothbrush head and a teeth cleaning head, utilizes a mature piezoelectric ceramic dual-chip structure as an ultrasonic transducer, maintains a vibration frequency between 10 kHz and 100 kHz, ensures a good teeth cleaning effect, and can significantly reduce production costs.

[0004] To achieve the above-mentioned objectives, an ultrasonic tooth cleaning device of the present invention comprises a tool head and an ultrasonic transducer fixedly connected to the tool head, wherein the ultrasonic transducer comprises an intermediate plate, wherein the intermediate plate is provided with at least one piezoelectric ceramic sheet, and the tool head is connected with a detachable toothbrush head or a tooth cleaning head, and the vibration frequency range of the ultrasonic transducer is between 10 kHz and 100 kHz.

[0005] Preferably, a mounting slot is provided at the end of the tool head, and the tool head is clamped with the middle plate through the mounting slot.

[0006] Preferably, the head end of the tool head is provided with a protruding platform, and the toothbrush head is provided with a recessed pit engaged with the protruding platform.

[0007] Preferably, the outer side of the tool head is provided with an external thread, and the tooth cleaning head is provided with an internal thread screwed to the external thread.

[0008] Preferably, the middle plate is made of a metal material such as stainless steel, aluminum, brass or steel.

[0009] Preferably, the intermediate plate is made of non-metallic material such as electronic circuit board, glass fiber board or carbon fiber board.

[0010] Beneficial effects of the present invention: An ultrasonic tooth cleaning device of the present invention comprises a tool head and an ultrasonic transducer fixedly connected to the tool head, the ultrasonic transducer comprises an intermediate plate, the intermediate plate is provided with at least one piezoelectric ceramic sheet, the tool head is connected with a detachable toothbrush head or a tooth cleaning head, and the vibration frequency range of the ultrasonic transducer is between 10 kHz and 100 kHz.

[0011] The ultrasonic transducer is mainly composed of an intermediate plate and a piezoelectric ceramic sheet. When there are two piezoelectric ceramic sheets, they are bonded to the upper and lower surfaces of the intermediate plate respectively. The intermediate plate stabilizes and reinforces the piezoelectric ceramic sheet by bonding to enhance the working reliability of the piezoelectric ceramic sheet and prevent it from breaking easily. The ultrasonic transducer and the tool head are fixedly connected to form an ultrasonic tooth cleaning device by bonding or welding. The piezoelectric ceramic sheet has an electrostrictive property. When an alternating power electrical signal is applied to the piezoelectric ceramic sheet, the piezoelectric ceramic sheet will be elongated or shortened accordingly in the length direction. The ultrasonic tooth cleaning device is bonded with two piezoelectric ceramic sheets with opposite polarities. When a power electrical signal is applied to the two piezoelectric ceramic sheets, the two piezoelectric ceramic sheets realize asynchronous elongation or shortening deformation in the length direction, thereby causing vibration of the tool head. When the ultrasonic tooth cleaning device is connected and fixed to the toothbrush head, the ultrasonic tooth cleaning device transmits ultrasonic energy to the bristles of the toothbrush head, and produces a cavitation effect on the tips of the bristles to achieve the purpose of removing periodontal pathogens and impurities; when the ultrasonic tooth cleaning device is connected and fixed to the tooth cleaning head, the ultrasonic tooth cleaning device transmits ultrasonic energy to the tip of the tooth cleaning head. When the tip of the tooth cleaning head contacts the teeth, the friction between the tip of the tooth cleaning head and the teeth can clean severe impurities such as dental plaque. In addition, the material of the tooth cleaning head is metal material, such as stainless steel, titanium alloy, etc., which produces a more intense cavitation effect on the tip of the tooth cleaning head than the bristles, thereby removing stubborn impurities. Ultrasonic waves generally refer to sound waves with a vibration frequency exceeding 20 kHz. In actual tooth cleaning tests, it is concluded that when an ultrasonic tooth cleaning device is provided with a tooth cleaning head, the amplitude is large between a vibration frequency of 10 kHz and 30 kHz, which can be used to clean stubborn dental plaque and has a good cleaning effect on severe dental plaque; when an ultrasonic tooth cleaning device is provided with a toothbrush head, the vibration frequency is between 60 kHz and 100 kHz, which has a good cleaning effect on periodontal pathogens and impurities. In actual tooth cleaning tests, it is also concluded that the length, width and thickness of the intermediate plate and the piezoelectric ceramic sheet have a great influence on the frequency and tooth cleaning effect of the ultrasonic tooth cleaning device. The ultrasonic tooth cleaning device for different purposes can be made by adjusting and combining the intermediate plates and piezoelectric ceramic sheets of different lengths, widths and thicknesses. The present invention can be used for both the installation and use of a toothbrush head and a tooth cleaning head, and uses a mature piezoelectric ceramic dual-chip structure as an ultrasonic transducer to keep the vibration frequency between 10 kHz and 100 kHz, ensuring a good tooth cleaning effect and significantly reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the present invention.

[0013] Figure 2 It is a schematic diagram of a partial decomposition structure of the present invention.

[0014] Figure 3 It is another partial decomposition structure schematic diagram of the present invention.

[0015] Figure 4 This is a schematic diagram of the structure of the tooth cleaning head used in conjunction with the present invention.

[0016] Figure 5 This is a schematic diagram of the top view of the tooth cleaning head used in conjunction with the present invention.

[0017] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure along the AA direction.

[0018] Figure 7 This is a schematic diagram of the structure of a toothbrush head used in conjunction with the present invention.

[0019] Figure 8 This is a schematic top view of the structure of a toothbrush head used in conjunction with the present invention.

[0020] Fig. 9 for Figure 8 Schematic diagram of the cross-sectional structure along the BB direction.

[0021] Reference numerals include:

[0022] 1——Tool head 2——Ultrasonic transducer 3——Middle plate

[0023] 4——Piezoelectric ceramic sheet 5——Toothbrush head 6——Tooth cleaning head

[0024] 7——Installation slot 8——Protruding platform 9——Pit

[0025] 10——External thread 11——Internal thread DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 9 As shown, an ultrasonic tooth cleaning device of the present invention comprises a tool head 1 and an ultrasonic transducer 2 fixedly connected to the tool head 1, wherein the ultrasonic transducer 2 comprises an intermediate plate 3, wherein the intermediate plate 3 is provided with at least one piezoelectric ceramic sheet 4, and the tool head 1 is connected with a detachable toothbrush head 5 or a tooth cleaning head 6, and the vibration frequency range of the ultrasonic transducer 2 is between 10 kHz and 100 kHz.

[0028] The ultrasonic transducer 2 is mainly composed of an intermediate plate 3 and a piezoelectric ceramic sheet 4. When there are two piezoelectric ceramic sheets 4, they are bonded to the upper and lower surfaces of the intermediate plate 3 respectively. The intermediate plate 3 stabilizes and reinforces the piezoelectric ceramic sheet 4 by bonding to enhance the working reliability of the piezoelectric ceramic sheet 4 and prevent it from breaking easily. The ultrasonic transducer 2 and the tool head 1 are fixedly connected to form an ultrasonic tooth cleaning device by bonding or welding. The piezoelectric ceramic sheet 4 has an electrostrictive characteristic. When an alternating power electrical signal is applied to the piezoelectric ceramic sheet 4, the piezoelectric ceramic sheet 4 will be elongated or shortened accordingly in the length direction. The ultrasonic tooth cleaning device is bonded with two piezoelectric ceramic sheets 4 with opposite polarities. When a power electrical signal is applied to the two piezoelectric ceramic sheets 4, the two piezoelectric ceramic sheets 4 realize asynchronous elongation or shortening deformation in the length direction, thereby causing the vibration of the tool head 1. When the ultrasonic tooth cleaning device is connected and fixed to the toothbrush head 5, the ultrasonic tooth cleaning device transmits ultrasonic energy to the bristles of the toothbrush head 5, and generates a cavitation effect on the tips of the bristles to achieve the purpose of removing periodontal pathogens and impurities; when the ultrasonic tooth cleaning device is connected and fixed to the tooth cleaning head 6, the ultrasonic tooth cleaning device transmits ultrasonic energy to the tip of the tooth cleaning head 6. When the tip of the tooth cleaning head 6 contacts the teeth, the friction between the tip of the tooth cleaning head 6 and the teeth can clean severe impurities such as dental plaque. In addition, the material of the tooth cleaning head 6 is a metal material, such as stainless steel, titanium alloy, etc., which generates a more intense cavitation effect on the tip of the tooth cleaning head 6 than the bristles, thereby removing stubborn impurities. Ultrasonic waves generally refer to sound waves with a vibration frequency exceeding 20 kHz. In actual tooth cleaning tests, it is concluded that when the ultrasonic tooth cleaning device is provided with a tooth cleaning head 6, the amplitude is large between the vibration frequency of 10 kHz and 30 kHz, which can be used to clean stubborn dental plaque and has a good cleaning effect on severe dental plaque; when the ultrasonic tooth cleaning device is provided with a toothbrush head 5, the vibration frequency is between 60 kHz and 100 kHz, which has a good cleaning effect on periodontal pathogens and impurities. In actual tooth cleaning tests, it is also concluded that the length, width and thickness of the intermediate plate 3 and the piezoelectric ceramic sheet 4 have a great influence on the frequency and tooth cleaning effect of the ultrasonic tooth cleaning device, and ultrasonic tooth cleaning devices for different purposes can be made by adjusting and combining the intermediate plates 3 and piezoelectric ceramic sheets 4 of different lengths, widths and thicknesses. The present invention can be installed and used with both a toothbrush head 5 and a tooth cleaning head 6, and uses a mature piezoelectric ceramic dual-chip structure as an ultrasonic transducer 2 to keep the vibration frequency at 10 kHz to 100 kHz, thereby ensuring a good tooth cleaning effect and significantly reducing production costs.

[0029] like Figure 1 , Figure 2 and Figure 3As shown, the end of the tool head 1 of this embodiment is provided with a mounting slot 7, and the tool head 1 is clamped with the middle plate 3 through the mounting slot 7. Specifically, the tool head 1 is clamped and connected to the middle plate 3 through the mounting slot 7, and then the connection between the tool head 1 and the middle plate 3 is strengthened by welding or gluing to improve the overall structural strength, thereby forming an ultrasonic tooth cleaning device.

[0030] like Figure 7 , Figure 8 and Fig. 9 As shown, the head end of the tool head 1 of this embodiment is provided with a protruding platform 8, and the toothbrush head 5 is provided with a recessed pit 9 that is engaged with the protruding platform 8. Specifically, the tool head 1 includes the protruding platform 8, and the toothbrush head 5 includes the recessed pit 9. During assembly, the tool head 1 is tightly engaged with the recessed pit 9 of the toothbrush head 5 through the protruding platform 8 to achieve the connection and fixation between the ultrasonic cleaning device and the toothbrush head 5.

[0031] like Figure 4 , Figure 5 and Figure 6 As shown, the outer side of the tool head 1 of this embodiment is provided with an external thread 10, and the tooth cleaning head 6 is provided with an internal thread 11 threadedly connected with the external thread 10. Specifically, the tool head 1 includes the external thread 10, and the tooth cleaning head 6 includes the internal thread 11. During assembly, the tool head 1 is threadedly matched with the internal thread 11 of the tooth cleaning head 6 through the external thread 10 to achieve the connection and fixation between the ultrasonic tooth cleaning device and the tooth cleaning head 6.

[0032] like Figure 1 As shown, the middle plate 3 of this embodiment is made of metal materials such as stainless steel, aluminum, brass or steel. Specifically, the piezoelectric ceramic sheets 4 have positive and negative polarities. When the middle plate 3 is made of metal materials such as stainless steel, aluminum, brass, and steel, two piezoelectric ceramic sheets 4 are bonded to the middle plate 3 with different polarity surfaces to be electrically connected.

[0033] like Figure 1 As shown, the middle plate 3 of this embodiment is made of non-metallic materials such as electronic circuit board, glass fiber board or carbon fiber board. Specifically, when the middle plate 3 is made of non-metallic materials, such as electronic circuit board, glass fiber board or carbon fiber board, when the material of the middle plate 3 is non-metallic, electrical connection can be achieved by crossing wires or making electrodes inside.

[0034] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. An ultrasonic teeth cleaning device, characterized in that: It comprises a tool head and an ultrasonic transducer fixedly connected to the tool head, the ultrasonic transducer comprises an intermediate plate, the intermediate plate is provided with at least one piezoelectric ceramic sheet, the tool head is connected with a detachable toothbrush head or a tooth cleaning head, the vibration frequency range of the ultrasonic transducer is between 10 kHz and 30 kHz and between 60 kHz and 100 kHz; a mounting slot is provided at the end of the tool head, the tool head is clamped with the intermediate plate through the mounting slot; a protruding platform is provided at the head end of the tool head, and the toothbrush head is provided with a recessed pit clamped with the protruding platform.

2. An ultrasonic teeth cleaning device according to claim 1, characterized in that: The outer side of the tool head is provided with an external thread, and the tooth cleaning head is provided with an internal thread screwed with the external thread.

3. The ultrasonic teeth cleaning device according to claim 1, characterized in that: The middle plate is made of metal material such as stainless steel, aluminum, brass or steel.

4. The ultrasonic teeth cleaning device according to claim 1, characterized in that: The middle plate is made of non-metallic materials such as electronic circuit board, glass fiber board or carbon fiber board.

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