Encapsulation structure of piezoelectric ceramic of dental unit transducer

Abstract

The utility model provides a dental unit transducer piezoelectric ceramic place glue structure belongs to oral cavity medical appliance field, including main rod, piezoelectric ceramic, amplitude bar, upper shell, lower shell and isolating bush, one end of main rod is connected with one end of piezoelectric ceramic, the other end of piezoelectric ceramic is connected with one end of amplitude bar, piezoelectric ceramic and amplitude bar all set up in the inside of upper shell, the other end of amplitude bar is provided with working tip, and working tip extends the outside of upper shell, the isolating bush sets up in the outer surface of piezoelectric ceramic, one end of upper shell is connected with one end of lower shell by screw thread, the utility model discloses a piezoelectric ceramic's outer surface joint isolating bush, and isolating bush can be mass-produced as mounting component in advance, and can be installed flexibly in the production process of transducer, can shorten total production time, and reduce production cost.

Description

Technical Field

[0001] This utility model relates to the field of oral medical devices, and in particular to a coating structure for the piezoelectric ceramic part of a dental scaler transducer. Background Technology

[0002] The ultrasonic transducer is the main component of an ultrasonic scaler. It typically consists of three parts: an upper amplitude transformer, a middle piezoelectric ceramic element, and a lower main shaft. The amplitude transformer is installed inside the handle. The upper amplitude transformer is usually connected to the working tip of the ultrasonic scaler, which contacts the teeth in the patient's mouth. The high-frequency vibrations generated by the piezoelectric ceramic are transmitted to the teeth through the working tip, thus treating them.

[0003] Since dental scalers operate in a wet environment, a waterproof layer is applied to the circumference of the piezoelectric ceramic transducer to ensure a dry working environment. This waterproof layer is typically achieved through injection molding, where the injection-molded layer is integrally bonded to the piezoelectric ceramic. However, the high hardness of the injection-molded layer, coupled with the rigid contact between the layer and the outer shell, leads to wear. Because the injection-molded layer is integral with the piezoelectric ceramic, wear necessitates returning the piezoelectric ceramic to the manufacturer for re-bonding, resulting in high operating costs. Therefore, a coating structure for the piezoelectric ceramic in dental scaler transducers is needed. Utility Model Content

[0004] The purpose of this utility model is to provide a coating structure for the piezoelectric ceramic part of the transducer of a dental scaler, thereby solving the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A piezoelectric ceramic coating structure for a dental scaler transducer includes a main rod, a piezoelectric ceramic, an amplitude transformer, an upper housing, a lower housing, and an isolation sleeve. One end of the main rod is connected to one end of the piezoelectric ceramic, and the other end of the piezoelectric ceramic is connected to one end of the amplitude transformer. Both the piezoelectric ceramic and the amplitude transformer are disposed inside the upper housing. A working tip is provided on the other end of the amplitude transformer, and the working tip extends out of the upper housing. The isolation sleeve is disposed on the outer surface of the piezoelectric ceramic. One end of the upper housing is threadedly connected to one end of the lower housing.

[0006] Furthermore, a decorative ring is provided on one end of the lower outer shell, and the decorative ring is disposed between the upper outer shell and the lower outer shell. Furthermore, the isolation sleeve is disposed inside the upper outer shell, and the isolation sleeve includes two half-isolation sleeves, which are respectively disposed on the outer surface of the piezoelectric ceramic, and the two half-isolation sleeves are connected by snap-fit.

[0007] Furthermore, a slot is provided on one side of each of the two semi-isolation sleeves, and a block is provided on the other side of each of the two semi-isolation sleeves, with the block of one semi-isolation sleeve engaging in the slot of the other semi-isolation sleeve.

[0008] Furthermore, the outer diameters at both ends of the semi-isolation sleeve are smaller than the outer diameter in the middle, and a raised strip is provided on the outer surface of one end of the semi-isolation sleeve.

[0009] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects: This invention features an isolation sleeve attached to the outer surface of the piezoelectric ceramic. When the isolation sleeve is worn by the outer shell, it can be easily removed and replaced with a new one, eliminating the need to return it to the manufacturer and reducing operating costs. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of the coating structure of this utility model; Figure 2 This is a disassembly diagram of the adhesive-coated structure of this utility model; Figure 3 This is a schematic diagram of the structure of the isolation sleeve of this utility model.

[0011] In the attached diagram, 1-main rod, 2-piezoelectric ceramic, 3-amplifier rod, 4-upper outer shell, 5-lower outer shell, 6-isolation sleeve, 7-working tip, 8-decorative ring, 9-semi-isolation sleeve, 10-slot, 11-block, 12-protrusion. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of this utility model, and these aspects can be achieved even without these specific details.

[0013] like Figure 1-2As shown, a piezoelectric ceramic transducer of a dental scaler is encapsulated in rubber, comprising a main rod 1, a piezoelectric ceramic 2, an amplitude transformer 3, an upper outer shell 4, a lower outer shell 5, and an isolation sleeve 6. One end of the main rod 1 is connected to one end of the piezoelectric ceramic 2, and the other end of the piezoelectric ceramic 2 is connected to one end of the amplitude transformer 3. Both the piezoelectric ceramic 2 and the amplitude transformer 3 are disposed inside the upper outer shell 4. A working tip 7 is provided on the other end of the amplitude transformer 3, extending beyond the outer surface of the upper outer shell 4. The function of the amplitude transformer 3 is to transmit the vibration of the piezoelectric ceramic 2 to the working tip 7. The isolation sleeve 6 is disposed on the outer surface of the piezoelectric ceramic 2 and is detachable from the piezoelectric ceramic 2. One end of the upper outer shell 4 is threadedly connected to one end of the lower outer shell 5. After the isolation sleeve 6 is worn by the outer shell, it can be removed and replaced with a new one for continued use without having to return it to the manufacturer, thus reducing operating costs.

[0014] In an embodiment of this utility model, a decorative ring 8 is provided on one end of the lower outer shell 5, and the decorative ring 8 is disposed between the upper outer shell 4 and the lower outer shell 5. The outer diameter of the decorative ring 8 is smaller than or the same as that of the outer shell. The isolation sleeve 6 is disposed inside the upper outer shell 4, and the isolation sleeve 6 includes two half-isolation sleeves 9, which are respectively disposed on the outer surface of the piezoelectric ceramic 2, and the two half-isolation sleeves 9 are connected by snap-fit. By setting the two half-isolation sleeves 9 to snap-fit ​​connection, the disassembly and assembly of the half-isolation sleeves can be facilitated.

[0015] like Figure 3 As shown, one side of each of the two semi-isolation sleeves 9 is provided with a slot 10, and the other side of each of the two semi-isolation sleeves 9 is provided with a locking block 11. The locking block 11 of one semi-isolation sleeve 9 is engaged in the slot 10 of the other semi-isolation sleeve 9. The locking block 11 is engaged in the slot 10, and no additional tools are needed for assembly and disassembly, making it simple and convenient. The outer diameters at both ends of the semi-isolation sleeve 9 are smaller than the outer diameter at the middle, and a protrusion 12 is provided on the outer surface of one end of the semi-isolation sleeve 9. The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A coating structure for the piezoelectric ceramic part of a dental scaler transducer, characterized in that: The device includes a main rod (1), a piezoelectric ceramic (2), an amplitude transformer (3), an upper housing (4), a lower housing (5), and an isolation sleeve (6). One end of the main rod (1) is connected to one end of the piezoelectric ceramic (2), and the other end of the piezoelectric ceramic (2) is connected to one end of the amplitude transformer (3). Both the piezoelectric ceramic (2) and the amplitude transformer (3) are located inside the upper housing (4). The other end of the amplitude transformer (3) is provided with a working tip (7), which extends out of the upper housing (4). The isolation sleeve (6) is located on the outer surface of the piezoelectric ceramic (2). One end of the upper housing (4) is threadedly connected to one end of the lower housing (5).

2. The adhesive-coated structure for the piezoelectric ceramic portion of a dental scaler transducer according to claim 1, characterized in that: A decorative ring (8) is provided on one end of the lower outer shell (5), and the decorative ring (8) is located between the upper outer shell (4) and the lower outer shell (5).

3. The adhesive-coated structure for the piezoelectric ceramic portion of a dental scaler transducer according to claim 1, characterized in that: The isolation sleeve (6) is disposed inside the upper outer shell (4). The isolation sleeve (6) includes two half-isolation sleeves (9). The two half-isolation sleeves (9) are respectively disposed on the outer surface of the piezoelectric ceramic (2). The two half-isolation sleeves (9) are connected by snap-fit.

4. The adhesive-coated structure for the piezoelectric ceramic portion of a dental scaler transducer according to claim 3, characterized in that: One side of the two semi-isolation sleeves (9) is provided with a slot (10), and the other side of the two semi-isolation sleeves (9) is provided with a block (11). The block (11) of one semi-isolation sleeve (9) is engaged in the slot (10) of the other semi-isolation sleeve (9).

5. The adhesive-coated structure for the piezoelectric ceramic part of the transducer in a dental scaler according to claim 3, characterized in that: The outer diameters at both ends of the semi-isolation sleeve (9) are smaller than the outer diameter in the middle, and a protrusion (12) is provided on the outer surface of one end of the semi-isolation sleeve (9).

Images