CN220027663U - Transducer for parametric array directional sound wave - Google Patents

Abstract

The utility model discloses a transducer for a parametric array directional sound wave, and relates to the technical field of transducers. The utility model comprises a rear driver, a front driver, piezoelectric ceramics and electrodes, wherein the piezoelectric ceramics are connected between the rear driver and the front driver, the electrodes are electrically connected with the piezoelectric ceramics, pre-tightening bolts are buried in the middle parts of the rear driver, the front driver and the piezoelectric ceramics, screw holes are arranged in the front driver, fastening mechanisms which are matched and connected with the pre-tightening bolts are arranged in the screw holes, and the fastening mechanisms comprise connecting units and linkage fastening units which drive different connecting units to synchronously move. According to the utility model, the connecting units are placed in the screw holes in advance, and different connecting units are synchronously rotated by rotating the linkage fastening unit, so that synchronous screwing and loosening of the connecting units are realized, the dismounting speed of a plurality of transducers is effectively improved, the time is saved, the repeated tedious work is avoided, and the labor burden is greatly reduced.

Description

Transducer for parametric array directional sound wave

Technical Field

The utility model relates to the technical field of transducer equipment, in particular to a transducer for a parametric array directional sound wave.

Background

The function of the acoustic wave transducer is to convert the input electric power into mechanical power (namely ultrasonic wave) and then transmit the mechanical power, and a part of the power is consumed by the transducer, the transducer consists of a shell, a matching layer, a piezoelectric ceramic disc transducer, a back lining, an outgoing cable and the like, and the acoustic wave transducer is widely applied to industry, agriculture, transportation, life, medical treatment and the like, and is also used in a loudspeaker of a parametric array directional acoustic wave transmission system, namely a parametric array loudspeaker.

Although transducers are widely used, they still have problems in practical use: when the prior energy converter is used, a plurality of energy converters are often installed on a metal plate for combined use, matched screws and embedded bolts are needed to be used for connection in the installation process, and each structure of the energy converters is reinforced one by one.

Disclosure of Invention

The utility model adopts the following technical scheme for realizing the purposes:

the utility model provides a transducer for directional sound wave of parametric array, includes back driver, front driver, piezoceramics and electrode, piezoceramics connects between back driver, front driver, and electrode and piezoceramics electric connection, pre-tightening bolt has been buried at back driver, front driver and piezoceramics middle part, be equipped with the screw in the front driver, and be equipped with the fastening mechanism who is connected with pre-tightening bolt cooperation in the screw, fastening mechanism includes connecting element and the linkage fastening unit that urges different connecting element synchronous motion, linkage fastening unit and connecting element coaxial swing joint.

Further, the connecting unit comprises a fastening screw, a movable column, a limiting rod, an elastic pressing rod and a vertical limiting groove, wherein the bottom of the fastening screw is in threaded connection with the pre-tightening bolt, the vertical limiting groove is formed in the inner side of the fastening screw, the limiting rod is fixed on the outer side of the movable column and is in sliding connection with the vertical limiting groove, and the elastic pressing rod is movably connected to the movable column.

Further, the linkage fastening unit comprises a shaft column, an external cylinder and a belt, wherein the outer surface of the shaft column is rough, the shaft column is coaxially and fixedly connected between the movable column and the external cylinder, and the belt is sleeved between two adjacent shaft columns.

Further, the elasticity presses the pole and is located vertical spacing groove directly over, and its diameter is greater than vertical spacing groove's width, the elasticity presses the pole and is located the inboard one end fixedly connected with spring of movable column, and the linkage fastening unit during operation, the elasticity presses the pole and is located the fastening screw top side.

Further, the middle part of the fastening screw is provided with a cavity, the height of the cavity is smaller than the sum of the heights of the movable column, the shaft column and the external cylinder, and the movable column and the external cylinder are made of insulating hard nylon plastics.

Further, the outer surface of the elastic pressing rod is smooth.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the connecting units are placed in the screw holes in advance, and different connecting units are synchronously rotated by rotating the linkage fastening unit, so that synchronous screwing and loosening of the connecting units are realized, the dismounting speed of a plurality of transducers is effectively improved, the time is saved, the repeated tedious work is avoided, and the labor burden is greatly reduced.

2. The utility model realizes voltage output by utilizing the piezoelectric effect of the polarized piezoelectric body, the input part is driven by sinusoidal voltage signals through the electrodes, vibration is generated through the inverse piezoelectric effect, vibration waves are mechanically coupled to the rear driver through the input part and the output part, electric charge is generated through the positive piezoelectric effect, the electric energy-mechanical energy-electric energy conversion of the piezoelectric body is realized, the highest output voltage is obtained under the resonance frequency of the piezoelectric transformer, and the rear driver, the front driver, the piezoelectric ceramics and the electrodes are small in integral size, light in weight and high in power density, are convenient to be matched with a fastening mechanism for use, and meet the use requirements of people.

Drawings

FIG. 1 is a schematic view of a three-dimensional structure of the present utility model;

FIG. 2 is a schematic elevational view of the present utility model;

FIG. 3 is a schematic cross-sectional view of the structure at A-A in FIG. 2

Fig. 4 is an enlarged schematic view of the structure at B in fig. 3.

Reference numerals: 1. a rear driver; 2. a front driver; 3. piezoelectric ceramics; 4. an electrode; 5. pre-tightening a bolt; 6. fastening a screw; 7. a movable column; 8. a shaft post; 9. an external cylinder; 10. a belt; 11. a limit rod; 12. the elastic force presses the compression bar; 13. and a vertical limit groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

As shown in fig. 1-2, a transducer for directional acoustic wave of parametric array includes a back driver 1, a front driver 2, a piezoelectric ceramic 3 and an electrode 4, wherein the piezoelectric ceramic 3 is connected between the back driver 1 and the front driver 2, and the electrode 4 is electrically connected with the piezoelectric ceramic 3, a pre-tightening bolt 5 is buried in the middle of the back driver 1, the front driver 2 and the piezoelectric ceramic 3, a screw hole is arranged in the front driver 2, a fastening mechanism matched and connected with the pre-tightening bolt 5 is arranged in the screw hole, the fastening mechanism includes a connecting unit and a linkage fastening unit for driving different connecting units to synchronously move, the linkage fastening unit is coaxially and movably connected with the connecting unit, in particular, during installation, each transducer is placed at a designated position to be fixed, the connecting unit is inserted into each screw hole, the connecting unit is rotated and synchronously drives a plurality of connecting units to rotationally strengthen the connection between the back driver 1, the front driver 2 and the piezoelectric ceramic 3, and the working efficiency is greatly improved.

As shown in fig. 3-4, in some embodiments, the connection unit includes a fastening screw 6, a movable column 7, a limit rod 11, an elastic pressing rod 12 and a vertical limit groove 13, the bottom of the fastening screw 6 is in threaded connection with the pre-tightening bolt 5, and the vertical limit groove 13 is opened at the inner side of the fastening screw 6, the limit rod 11 is fixed at the outer side of the movable column 7 and is in sliding connection with the vertical limit groove 13, the elastic pressing rod 12 is movably connected on the movable column 7, in order to conveniently hold the external cylinder 9 at any time to take out the external cylinder 9, a cavity is formed in the middle of the fastening screw 6, the height of the cavity is smaller than the sum of the heights of the movable column 7, the shaft column 8 and the external cylinder 9, in order to prevent electric leakage, the movable column 7 and the external cylinder 9 are made of insulating hard nylon plastics, in particular, when the fastening screw 6 is required to be screwed down, the movable column 7 is pulled upwards, so that the elastic pressing rod 12 is higher than the front driver 2, at this moment, the fastening screw 6 is partially meshed with the screw hole, and after the fastening screw 6 is screwed down, the elastic pressing rod 12 is still higher than the front driver 2, the elastic pressing rod 12 is still pushed down, the elastic pressing rod 12 is higher than the front driver 12, the elastic pressing rod is contracted between the movable column 7 and the vertical cylinder 7 and the external cylinder 9, the cavity is contracted between the cavity and the vertical cylinder 9, and the cavity is prevented from being connected with the external cylinder by the external cylinder, and the external cylinder 9, and the high friction force.

As shown in fig. 3, in some embodiments, the linkage fastening unit includes a shaft post 8, an external cylinder 9 and a belt 10, the outer surface of the shaft post 8 is rough, and the shaft post 8 is coaxially and fixedly connected between the movable post 7 and the external cylinder 9, the belt 10 is sleeved between two adjacent shaft posts 8, specifically, the external cylinder 9 is rotated by a tool (screwdriver), so that the shaft posts 8 synchronously rotate, and the adjacent shaft posts 8 are driven to rotate by the belt 10, so that the movable post 7 is driven to rotate, and the fastening screw 6 is driven to rotate, thereby realizing quick disassembly, wherein the shaft post 8 can be replaced with a double-layer track cylinder according to the number of transducers.

As shown in fig. 1-4, in some embodiments, the elastic pressing rod 12 is located right above the vertical limiting groove 13, and the diameter of the elastic pressing rod is larger than the width of the vertical limiting groove 13, a spring is fixedly connected to one end of the elastic pressing rod 12 located on the inner side of the movable column 7, and when the linkage fastening unit works, the elastic pressing rod 12 is located on the top side of the fastening screw 6, the outer surface of the elastic pressing rod 12 is smooth, automatic ejection can be achieved when the movable column 7 is pulled out through the elastic pressing rod 12, the operation is convenient, and the elastic pressing rod 12 cannot be blocked into the vertical limiting groove 13 when being contracted into the cavity, so that the normal operation of the structure is ensured.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. The utility model provides a transducer for directional sound wave of parametric array, includes back driver (1), front driver (2), piezoceramics (3) and electrode (4), piezoceramics (3) are connected between back driver (1), front driver (2), and electrode (4) and piezoceramics (3) electric connection, its characterized in that, pre-tightening bolt (5) have been buried at back driver (1), front driver (2) and piezoceramics (3) middle part, be equipped with the screw in front driver (2), and be equipped with the fastening mechanism who is connected with pre-tightening bolt (5) cooperation in the screw, fastening mechanism includes connecting element and the linkage fastening unit that urges different connecting element synchronous motion, linkage fastening unit and connecting element coaxial swing joint.

2. The transducer for directional acoustic waves of a parametric array according to claim 1, wherein the connecting unit comprises a fastening screw (6), a movable column (7), a limiting rod (11), an elastic pressing rod (12) and a vertical limiting groove (13), the bottom of the fastening screw (6) is in threaded connection with the pre-tightening bolt (5), the vertical limiting groove (13) is formed in the inner side of the fastening screw (6), and the limiting rod (11) is fixed on the outer side of the movable column (7) and is in sliding connection with the vertical limiting groove (13), and the elastic pressing rod (12) is movably connected to the movable column (7).

3. The transducer for parametric array directional sound waves according to claim 1, wherein the linkage fastening unit comprises a shaft column (8), an external cylinder (9) and a belt (10), the outer surface of the shaft column (8) is rough, the shaft column is coaxially and fixedly connected between the movable column (7) and the external cylinder (9), and the belt (10) is sleeved between two adjacent shaft columns (8).

4. The transducer for parametric array directional sound waves according to claim 2, wherein the elastic pressing rod (12) is located right above the vertical limiting groove (13) and has a diameter larger than the width of the vertical limiting groove (13), a spring is fixedly connected to one end of the elastic pressing rod (12) located inside the movable column (7), and the elastic pressing rod (12) is located on the top side of the fastening screw (6) when the linkage fastening unit works.

5. The transducer for parametric array directional sound waves according to claim 2, wherein a cavity is arranged in the middle of the fastening screw (6), the height of the cavity is smaller than the sum of the heights of the movable column (7), the shaft column (8) and the external cylinder (9), and the movable column (7) and the external cylinder (9) are made of insulating hard nylon plastics.

6. A transducer for directional acoustic waves of a parametric array as claimed in claim 4, wherein the outer surface of said elastic pressing rod (12) is rounded.