阅读说明：本技术 超声波换能结构及手持式洁牙器 (Ultrasonic wave transduction structure and hand-held type scaler ) 是由 喻鑫 于 2019-12-05 设计创作，主要内容包括：本发明公开了一种超声波换能结构及手持式洁牙器,包括金属片、压电陶瓷晶片和用于与牙齿清洁头连接的连接组件,压电陶瓷晶片设置在金属片一端,金属片另一端与连接组件连接,金属片一端至金属片另一端的方向上越靠近连接组件的金属片长度越小。本发明,能够提高机械能的传导效率,且金属片为片状金属结构,能够将压电陶瓷晶片产生的热量进行快速传导,有利于散热,且成本低。(The invention discloses an ultrasonic wave transduction structure and a handheld tooth cleaner, which comprise a metal sheet, a piezoelectric ceramic wafer and a connecting assembly used for being connected with a tooth cleaning head, wherein the piezoelectric ceramic wafer is arranged at one end of the metal sheet, the other end of the metal sheet is connected with the connecting assembly, and the length of the metal sheet which is closer to the connecting assembly is smaller from one end of the metal sheet to the other end of the metal sheet. The invention can improve the conduction efficiency of mechanical energy, and the metal sheet is of a sheet metal structure, can quickly conduct heat generated by the piezoelectric ceramic wafer, is favorable for heat dissipation, and has low cost.)

1. The utility model provides an ultrasonic wave transduction structure, its characterized in that, includes sheetmetal, piezoceramics wafer and is used for the coupling assembling be connected with the tooth cleaning head, and the piezoceramics wafer sets up in sheetmetal one end, and the sheetmetal other end is connected with coupling assembling, and the sheetmetal length that is close to coupling assembling more on the direction of sheetmetal one end to the sheetmetal other end is littleer.

2. The ultrasonic transducer structure of claim 1, wherein the coupling member has a first external thread formed on a surface thereof, and the teeth cleaning head has a first internal thread formed thereon to be fitted with the first external thread.

3. The ultrasonic transducing structure of claim 1 wherein the piezoceramic wafer has a circular cross-sectional shape and a length comprising 20-100 mm.

4. The ultrasonic transducing structure of claim 1, wherein the piezoelectric ceramic chip is bonded to the metal plate by an epoxy glue.

5. A hand-held dental scaler comprising a housing structure having an ultrasonic transducing structure of claim 1 disposed therein.

6. The hand-held tooth cleaner as claimed in claim 5, wherein the housing structure comprises a first outer housing, a second outer housing, a first inner housing and a second inner housing, a first cavity for accommodating the battery is opened inside the first outer housing, the ultrasonic transducer structure is fixed between the first inner housing and the second inner housing, a first slot is provided on an outer surface of the first inner housing, a second slot is provided on an outer surface of the second inner housing, a first clamping portion capable of being clamped into the first slot is provided on an inner surface of the first outer housing, and a second clamping portion capable of being clamped into the second slot is provided on an inner surface of the second outer housing.

7. The hand-held dental scaler of claim 1, further comprising a button structure provided on the second casing body and a PCB board provided with a button module, the PCB board being disposed inside the second casing body.

8. The hand-held dental scaler according to claim 1, further comprising a cylindrical fastener having a through-hole, wherein the first inner housing has a first crescent-shaped protrusion formed at a top thereof, and the second inner housing has a second crescent-shaped protrusion formed at a top thereof.

9. The hand-held dental scaler according to claim 5, further comprising a bolt, wherein the PCB board is fixed to the inside of the second outer case by the bolt.

10. The hand-held dental scaler of claim 7, wherein a charging interface is provided on the PCB.

Technical Field

The invention belongs to the technical field of dental scaler structures, and particularly relates to an ultrasonic wave energy conversion structure and a handheld dental scaler.

Background

Currently, an ultrasonic transducer is widely used in a dental scaler, such as the one disclosed in patent application No. CN201310672273, which has the name of an ultrasonic transducer that is formed by stacking a plurality of piezoelectric wafers, and although the ultrasonic transducer can convert electric energy into mechanical energy to clean teeth, the ultrasonic transducer has the technical problems of low mechanical energy transmission efficiency and easy heat generation.

Therefore, the prior art is to be improved.

Disclosure of Invention

The present invention is directed to an ultrasonic transducer structure and a hand-held dental scaler for solving the above-mentioned problems.

The invention discloses an ultrasonic wave transduction structure which comprises a metal sheet, a piezoelectric ceramic wafer and a connecting assembly, wherein the connecting assembly is used for being connected with a tooth cleaning head, the piezoelectric ceramic wafer is arranged at one end of the metal sheet, the other end of the metal sheet is connected with the connecting assembly, and the length of the metal sheet, which is closer to the connecting assembly, is smaller in the direction from one end of the metal sheet to the other end of the metal sheet.

Preferably, the surface of the connecting component is provided with a first external thread, and the tooth cleaning head is provided with a first internal thread matched with the first external thread.

Preferably, the piezoceramic wafer is circular in cross-section and includes a length of 20-100 mm.

Preferably, the piezoceramic wafer is bonded to the metal sheet by an epoxy glue.

The present invention also provides a hand-held dental scaler comprising a housing structure having the ultrasonic transducing structure of claim 1 disposed therein.

Preferably, the shell structure comprises a first outer shell, a second outer shell, a first inner shell and a second inner shell, a first containing cavity for placing the storage battery is formed in the inner side of the first outer shell, the ultrasonic transduction structure is fixed between the first inner shell and the second inner shell, a first clamping groove is formed in the outer surface of the first inner shell, a second clamping groove is formed in the outer surface of the second inner shell, a first clamping portion capable of being clamped into the first clamping groove is formed in the inner surface of the first outer shell, and a second clamping portion capable of being clamped into the second clamping groove is formed in the inner surface of the second outer shell.

Preferably, the keyboard comprises a key structure arranged on the second outer shell and a PCB provided with a key module, wherein the PCB is arranged on the inner side of the second outer shell.

Preferably, still including the cylinder fastener of seting up the through-hole, first interior casing top is provided with first half moon type convex part, and second interior casing top is provided with second half moon type convex part.

Preferably, the PCB board is fixed inside the second outer shell body through bolts.

Preferably, a charging interface is arranged on the PCB.

According to the ultrasonic transduction structure and the handheld tooth cleaner, in the process that the piezoelectric ceramic wafer conducts mechanical energy to the connecting assembly through the metal sheet, the length of the metal sheet which is closer to the connecting assembly in the direction from one end of the metal sheet to the other end of the metal sheet is smaller, so that the weight of the piezoelectric ceramic wafer can be effectively reduced, meanwhile, the metal sheet is used as mechanical energy for conduction, the mechanical energy is transmitted from one end of the metal sheet to the other end of the metal sheet, the conduction efficiency of the mechanical energy can be improved based on the small mass of the metal sheet, and the metal sheet is of a sheet metal structure, so that heat generated by the piezoelectric ceramic wafer can be conducted to a certain extent, heat dissipation is facilitated, and the cost.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a first embodiment of an ultrasonic transducing structure of the present invention;

FIG. 2 is a schematic view of the hand-held scaler according to the present invention;

FIG. 3 is a three-dimensional schematic view of the hand-held dental scaler of the present invention;

fig. 4 is a schematic structural diagram of a second embodiment of an ultrasonic transducing structure of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It is noted that relative terms such as "first," "second," and the like may be used to describe various components, but these terms are not intended to limit the components. These terms are only used to distinguish one component from another component. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present invention. The term "and/or" refers to a combination of any one or more of the associated items and the descriptive items.

As shown in fig. 1 and 2, fig. 1 is a schematic structural view of a first embodiment of an ultrasonic transducer structure according to the present invention; the invention relates to an ultrasonic wave transduction structure 9, which comprises a metal sheet 92, a piezoelectric ceramic wafer 91 and a connecting assembly 93 for connecting with a tooth cleaning head, wherein the piezoelectric ceramic wafer is arranged at one end of the metal sheet, the other end of the metal sheet is connected with the connecting assembly, and the length of the metal sheet which is closer to the connecting assembly in the direction from one end of the metal sheet to the other end of the metal sheet is smaller; for example, as shown in fig. 4, in the direction from one end of the metal sheet to the other end of the metal sheet, i.e., in the Z direction, the metal sheet length D1 is smaller than the metal sheet length D2; the ultrasonic transduction structure and the handheld tooth cleaner provided by the invention have the advantages that in the process that the piezoelectric ceramic wafer conducts mechanical energy to the connecting assembly through the metal sheet, the length of the metal sheet which is closer to the connecting assembly in the direction from one end of the metal sheet to the other end of the metal sheet is smaller, the weight of the piezoelectric ceramic wafer can be effectively reduced, meanwhile, the metal sheet is used as mechanical energy for conduction, and the mechanical energy is transmitted from one end of the metal sheet to the other end of the metal sheet to drive the cleaning head to vibrate.

Wherein, the length of the metal sheet closer to the connecting component is smaller in the direction from one end of the metal sheet to the other end of the metal sheet; it can be understood that: the radial dimension of the metal sheet in the axial direction Z of the metal sheet is smaller closer to the connecting assembly.

For the metal sheet with small weight, the mechanical energy conduction efficiency can be improved, and the following can be understood: assuming that the piezoceramic wafer 91 generates 100J mechanical energy, the 100J mechanical energy is transmitted from one end of the metal sheet to the other end of the metal sheet to drive the connecting assembly to vibrate; because the mass of the traditional circular shaft vibration structure is far greater than that of the metal sheet, the vibration frequency of the traditional circular shaft vibration structure is lower than that of the metal sheet with the same 100J mechanical energy; the metal sheet thus improves the efficiency of conduction of mechanical energy.

The metal sheet means a sheet-like metal structure such as an aluminum sheet, a copper sheet or a stainless steel sheet; compared with the shape of a circular shaft, the sheet metal is convenient to process. Wherein, the surface of the connecting component is provided with a first external thread, and the tooth cleaning head 11 is provided with a first internal thread matched with the first external thread; is convenient for installation and disassembly. Preferably, the piezoceramic wafer is circular in cross-section and includes 20-100 mm in diameter.

As shown in fig. 4, the connecting assembly is provided with a through cavity, one end of the metal sheet is further provided with a water channel 2000 communicated with the through cavity, and the water channel 2000 is used for realizing the flow of water from one end of the metal sheet to the other end so as to realize water supply during tooth washing. The piezoelectric ceramic wafer is bonded on the metal sheet through epoxy resin glue, the epoxy resin glue is high temperature resistant, and the firmness of connection of the piezoelectric ceramic wafer and the metal sheet is ensured.

As shown in fig. 2 and 3, the present invention also provides a hand-held dental scaler comprising a housing structure in which the ultrasonic wave transducing structure of claim 1 is provided; the shell structure comprises a first outer shell 1, a second outer shell 6, a first inner shell 12 and a second inner shell 8, a first containing cavity 666 used for placing the storage battery 2 is arranged on the inner side of the first outer shell, the ultrasonic wave transduction structure is fixed between the first inner shell and the second inner shell, a first clamping groove 1211 is arranged on the outer surface of the first inner shell, a second clamping groove 81 is arranged on the outer surface of the second inner shell, a first clamping part 100 capable of being clamped into the first clamping groove is arranged on the inner surface of the first outer shell, and a second clamping part 61 capable of being clamped into the second clamping groove 81 is arranged on the inner surface of the second outer shell. The realization is as follows: the mechanical energy conduction performance in the hand-held tooth cleaner is improved; the first outer shell and the second outer shell can be tightly held by a user through one hand without directly contacting the ultrasonic transducer, so that the hand-held ultrasonic wave generator is convenient to hold and scalding is avoided; based on be provided with the first card income portion that can block into first draw-in groove on the first shell body internal surface, be provided with the second card income portion that can block into the second draw-in groove on the second shell body internal surface, realize first shell body, second shell body to the fastness of connection of first interior casing, second interior casing.

As shown in fig. 2, it preferably further includes a key structure 7 disposed on the second outer case and a PCB board 4 disposed with a key module 51, the PCB board 4 being disposed inside the second outer case. The piezoelectric ceramic wafer 91 is connected with the PCB 4, the storage battery 2 is connected with the PCB 4, and the PCB 4 is provided with a charging interface 5; the external power supply of the charging interface 5 supplies electric quantity to the storage battery; the storage battery transmits the electric energy to the PCB, and the PCB receives the electric energy and then drives the PCB to transmit the electric energy to the piezoceramic wafer 91, so as to perform energy conversion and output mechanical energy.

As shown in fig. 2, preferably, the pipe joint further includes a cylindrical fastener 10 with a through hole 1000, the top of the first inner casing is provided with a first half-moon-shaped protrusion 1212, and the top of the second inner casing is provided with a second half-moon-shaped protrusion 1213; the preferred embodiment is provided with the cylindrical fastener 10, and the cylindrical fastener 10 is fastened and pressed on the first half-moon-shaped convex part 1212 and the second half-moon-shaped convex part 1213, so that the connection firmness between the top of the first inner shell and the top of the second inner shell is improved; during assembly, the bottom of the cleaning head is clamped into the through hole, and the vibrating piece threaded head 93 penetrates out of the bottom of the through hole 1000 to be connected with the cleaning head; realize the spacing technological effect to the cleaning head through the through-hole inner wall, reduce because the cleaning head vibration to the firm in connection nature between first interior casing, the second interior casing. The cylindrical fastener represents a cylindrical buckling structure, and a fourth accommodating cavity (the fourth accommodating cavity is not marked in fig. 1) is formed in the buckling structure; such that first and second meniscal protrusions 1212 and 1213 are inserted into the fourth receptacle for fixation.

As shown in fig. 2, it is preferable that a bolt 3 is further included, and the PCB board is fixed to the inside of the second outer case by the bolt. To the connection between first interior casing and the second interior casing, first interior casing inboard is provided with fixed column 121, and second interior casing inboard is provided with the mounting groove with fixed column 121 adaptation.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.