KR20230027399A - A UltraSonic Transducer Array - Google Patents

Abstract

The present invention relates to an ultrasonic wave transducer array, wherein the configuration is characterized in comprising: a substrate; a vibrator part wherein a vibrator formed in a plate shape and generating a vibration is disposed several-horizontally above the substrate, and a bridge is formed as a plate-shape bar that connects between each of the vibrators horizontally; and a fixing part provided on an upper surface of the substrate and supporting, from below, a connection point of each vibrator of the vibrator part and the bridge part. Therefore, the present invention is capable of having an advantage wherein a durability of the entire array is increased.

Description

Ultrasonic Transducer Array {A UltraSonic Transducer Array}

The present invention relates to an ultrasonic transducer array, and more particularly, to an ultrasonic transducer array capable of stably and strongly generating the intensity of sound waves generated by amplification of vibrators to which piezoelectric ceramics are attached.

Conventional ultrasonic transducers are largely divided into a piezoelectric element type and a capacitive type type. When an electrical pulse is applied in both methods, ultrasonic waves corresponding to a resonant frequency are emitted. When receiving ultrasonic waves, the vibration of the element by external ultrasonic waves is converted into an electrical signal, and the amplified signal is used.

In the case of a general ultrasonic transducer, when the vibrator vibrates freely, the area where the displacement of the vibrator is minimized is fixed to another fixture with a soft adhesive, so the vibration direction of the center and corner portions of the vibrator are reversed in free vibration, so the ultrasonic wave proceeds Since the ultrasonic wave generated in the direction is too small, a horn was attached to the center to obtain an acoustic vibration effect with the vibration generated by the movement of the horn.

However, the prior art had the following problems.

Since the horn is attached to the center of the vibrator where the displacement of the vibrator is greatest, the horn is dropped due to continuous vibration, resulting in poor durability, and when multiple vibrators are configured, each vibrator can be controlled to generate the maximum sound pressure. The problem was that there was no means available.

Registered Patent No. 10-1562828

In order to solve the above problems, an object of the present invention is to provide an ultrasonic transducer array with high durability and maximum sound pressure generation by stably operating several vibrators.

In order to achieve the above object, in the ultrasonic transducer array of the present invention, a substrate, a plurality of plate-shaped vibrators generating vibrations are horizontally arranged above the substrate, and horizontally between each of the vibrators It is characterized in that it includes a vibrator unit on which a plate-shaped bridge is formed, and a fixing unit provided on an upper surface of the substrate and supporting a connection point of each vibrator unit and the bridge unit from below.

The vibrator of the vibrator unit is composed of a polygonal plate, and the bridge unit connects vertices of the respective vibrators.

The vibrator is formed of a rectangular plate, and the bridge unit connects four edges of the vibrator adjacent to each other in a cross shape.

A sound insulation plate is further provided above the bridge part and the vibrator part, and an upper part of the vibrator part is opened.

In addition, in the ultrasonic transducer array according to another embodiment of the present invention, a substrate and a plurality of first vibrators generating vibrations formed in a plate shape are arranged horizontally above the substrate, and horizontally between each of the first vibrators. A first vibrator unit on which a first bridge formed by a plate-shaped bar is formed, and is provided on the upper surface of the substrate to support the connection point of each first vibrator unit and the first bridge of the first vibrator unit from the lower side. A first fixing part formed in a plate shape and a plurality of second vibrators generating vibrations are horizontally arranged above the first bridge, and formed as a plate-shaped bar horizontally connecting each of the second vibrators. A second bridge is provided on the upper surface of the second vibrator part formed above the first vibrator and the first fixing part, so that the connection point between the second vibrator of each of the second vibrator and the second bridge is lowered. It is characterized in that it comprises a second fixing portion supported by.

The ultrasonic transducer array of the present invention has the following effects.

A bridge is placed at the part where the vibrator and the vibrator are connected, and a fixing part vertically connected to the substrate is placed at the part where the bridge and the vibrator are connected to catch unnecessary vibration, and the bridge is formed in a cross shape between the vibrators located in the diagonal direction. Thus, the sum of the displacements of the entire vibrator is maximized and unnecessary vibrations are minimized to increase the sound pressure of the entire vibrator array, and the displacement of the fixed point of the vibrator is minimized to increase durability of the entire array.

1 is a plan view showing a preferred embodiment of an ultrasonic transducer array according to the present invention.
Figure 2 is a perspective view showing the configuration of the ultrasonic transducer array according to the present invention.
Figure 3 is a side view showing the configuration of the ultrasonic transducer array according to the present invention.
Figure 4 is an operating state diagram showing the displacement when + voltage is applied to the ultrasonic transducer array according to the present invention.
Figure 5 is an operating state diagram showing the displacement when a -voltage is applied to the ultrasonic transducer array according to the present invention.
Figure 6 is a side view showing a second embodiment of the ultrasonic transducer array according to the present invention.
Figure 7 is a side view showing a third embodiment of the ultrasonic transducer array according to the present invention.

Hereinafter, preferred embodiments of the ultrasonic transducer array according to the present invention will be described in detail with reference to the accompanying drawings.

First, in the ultrasonic transducer array of the present invention, as shown in FIGS. 1 and 3 , a substrate 10 and a vibrator 22 formed in a plate shape to generate vibrations are disposed above the substrate 10. A vibrator unit 20 disposed horizontally and having a plate-shaped bridge 24 connecting horizontally between each of the vibrators 22 is formed, and provided on the upper surface of the substrate 10, and the vibrator unit It includes a fixing part 30 supporting the connection point of each vibrator 22 and the bridge part 24 of (20) from below.

First, a substrate 10 is provided in the ultrasonic transducer array of the present invention. The substrate 10 is formed in a plate shape and serves to provide a space in which various components to be described below are mounted on an upper surface.

A vibrator unit 20 is provided on the substrate 10 . As shown in FIG. 1, in the vibrator unit 20, a plurality of vibrators 22 formed in a plate shape are horizontally arranged at regular intervals.

The vibrator 22 includes a piezoelectric part 22b that generates vibration, and a diaphragm 22a formed in a plate shape and having the piezoelectric part 22b attached to the center thereof.

The vibrator 22 is provided with a piezoelectric part 22b. The piezoelectric part 22b serves to generate vibration when an electrical signal is applied. The piezoelectric part 22b may be composed of a piezoelectric element.

A diaphragm 22a is provided on the piezoelectric part 22b. The diaphragm 22a is formed in a plate shape, and the piezoelectric part 22b is attached to one side thereof. The diaphragm 22a serves to amplify vibration generated from the piezoelectric part 22b.

A bridge 24 is provided between the vibrators 22 . The bridge 24 is formed as a plate-shaped bar connecting the respective vibrators 22 horizontally. The bridge 24 horizontally connects the diaphragm 22a of the vibrator 22 and the diaphragm 22a of the different vibrators 22 .

The diaphragm 22a may be formed in a polygonal shape or, as shown in FIG. 1 , may be formed in a quadrangular shape. The bridge 24 may be configured to extend in a diagonal direction from a vertex of each diaphragm 22a and be connected to a vertex of another diaphragm 22a. The bridge 24 may be formed in a cross shape as shown in FIG. 1 .

A mass body (not shown) may be further provided on the bridge 24 . The mass body is fixed to one surface of the bridge 24, and can control the vibration displacement and driving frequency of the bridge 24.

The bridge 24 may have the same diagonal length of the vibrator 22 . This is to facilitate control of the bridge 24 and the vibrator 22 . In addition, this is to easily control the structure when the vibrator unit 20 is stacked in multiple layers.

Also, a fixing part 30 is provided on the upper surface of the substrate 10 . The fixing part 30 is formed to protrude vertically from the upper surface of the substrate 10 so that the vibrator unit 20 is spaced apart from and fixed to the upper surface of the substrate 10 .

Several fixing parts 30 are formed, and as shown in FIG. 3 , they are formed at a connection point between the vibrator 22 and the bridge 24 .

In addition, a sound insulation board 40 may be further provided above the bridge 24 . The sound insulation plate 40 is located above the bridge 24 and serves to cancel vibration generated from the bridge 24 . The sound insulation plate 40 may be configured in various ways, and as shown in FIG. 6, it may be formed in a plate shape so that the location of the vibrator 22 is open.

And, in another embodiment of the ultrasonic transducer array of the present invention, as shown in FIG. 7, the substrate 50 and the first vibrator 62 formed in a plate shape and generating vibration are disposed above the substrate 10. A plurality of first vibrator units 60 arranged horizontally and having a first bridge 64 formed as a plate-shaped bar connecting horizontally between each of the first vibrators 62, and the substrate 10 It is provided on the upper surface of the first vibrator unit 60 and formed in a plate shape with a first fixing part 70 supporting the connection point between each first vibrator 62 and the first bridge 64 from below. A plurality of second vibrators 82 generating vibrations are arranged horizontally above the first bridge 84, and formed as a plate-shaped bar connecting each of the second vibrators 82 horizontally. 2 bridges 84 are provided on the upper surface of the second vibrator unit 80 and the first fixing unit 70 formed above the first vibrator unit 62, respectively. It may include a second fixing part 90 supporting the connection point of the second vibrator 82 and the second bridge 84 from below.

First, a substrate 50 is provided in the ultrasonic transducer array of the present invention. The substrate 50 is formed in a plate shape and serves to provide a space in which various components to be described below are mounted on the upper surface.

A first vibrator unit 60 is provided on the substrate 50 . As shown in FIG. 7, in the first vibrator unit 60, a plurality of first vibrators 62 formed in a plate shape are horizontally arranged at regular intervals.

The first vibrator 62 includes a first piezoelectric part 62b generating vibration and a first diaphragm 62a formed in a plate shape and having the first piezoelectric part 62b attached to the center thereof.

The first vibrator 62 is provided with a first piezoelectric part 62b. The first piezoelectric part 62b serves to generate vibration when an electrical signal is applied. The first piezoelectric part 62b may be formed of a piezoelectric element.

A first vibration plate 62a is provided on the first piezoelectric part 62b. The first vibrating plate 62a is formed in a plate shape, and the first piezoelectric part 62b is attached to one side thereof. The first diaphragm 62a serves to amplify vibration generated from the first piezoelectric part 62b.

A first bridge 64 is provided between the first vibrators 62 . The first bridge 64 is formed as a plate-shaped bar connecting the first vibrators 62 horizontally. The first bridge 64 horizontally connects the first diaphragm 62a of the first oscillator 62 and the first diaphragm 62a of the first oscillator 62 different from each other.

The first diaphragm 62a may be formed in a polygonal shape or a quadrangular shape. The first bridge 64 may be configured to extend in a diagonal direction from a vertex of each first diaphragm 62a and be connected to a vertex of another first diaphragm 62a. The first bridge 64 may be formed in a cross shape.

A mass body (not shown) may be further provided on the first bridge 64 . The mass body is fixed to one surface of the first bridge 64 and can control the vibration displacement of the first bridge 64 . The first bridge 64 may have the same diagonal length of the first oscillator 62 .

Also, a first fixing part 70 is provided on the upper surface of the substrate 50 . The first fixing part 70 is formed to protrude vertically from the upper surface of the substrate 50 so that the first vibrator unit 60 is spaced apart from and fixed to the upper surface of the substrate 50 .

Several first fixing parts 70 are formed, and as shown in FIG. 7 , they are formed at a connection point between the first vibrator 62 and the first bridge 64 .

Further, a second vibrator unit 80 is provided above the first vibrator unit 60 . As shown in FIG. 7, in the second vibrator unit 80, a plurality of second vibrators 82 formed in a plate shape are horizontally arranged at regular intervals.

The second vibrator 82 includes a second piezoelectric part 82b generating vibration and a second diaphragm 82a formed in a plate shape and having the second piezoelectric part 82b attached to the center thereof.

The second oscillator 82 is provided with a second piezoelectric part 82b. The second piezoelectric part 82b serves to generate vibration when an electrical signal is applied. The second piezoelectric part 82b may be formed of a piezoelectric element.

A second diaphragm 82a is provided on the second piezoelectric part 82b. The second diaphragm 82a is formed in a plate shape, and the second piezoelectric part 82b is attached to one side thereof. The second diaphragm 82a serves to amplify vibration generated from the second piezoelectric part 82b.

And, a second bridge 84 is provided between the second vibrators 82 . The second bridge 84 is formed as a plate-shaped bar connecting the respective second oscillators 82 horizontally. The second bridge 84 horizontally connects the second oscillation plate 82a of the second oscillator 82 and the second oscillation plate 82a of the second oscillator 82 different from each other.

The second diaphragm 82a may be formed in a polygonal shape or a quadrangular shape. The second bridge 84 may be configured to extend in a diagonal direction from a vertex of each second diaphragm 82a and be connected to a vertex of another second diaphragm 82a. The second bridge 84 may be formed in a cross shape.

A mass body (not shown) may be further provided on the second bridge 84 . The mass body is fixed to one surface of the second bridge 84 and can control vibrational displacement of the second bridge 84 . The second bridge 84 may have the same diagonal length of the second oscillator 82 .

Also, a second fixing part 90 is provided on the upper surface of the first vibrator part 60 . The second fixing part (90) is formed to protrude vertically from the upper surface of the first vibrator part (60), so that the second vibrator part (80) is spaced apart from and fixed to the upper surface of the first vibrator part (60). Let it be.

The second fixing part 90 is formed in plural, and is formed at a connection point between the second vibrator 82 and the second bridge 84, more preferably above the first fixing part 70. The second fixing part 90 can be positioned at.

The arrangement of the first vibrator unit 60 and the second vibrator unit 80 is such that the second bridge 84 is located above the first vibrator 62 and the second bridge 84 is located above the first bridge 64. The second vibrator 82 may be located. This is to maximize the sound pressure generated from the first vibrator unit 60 and the second vibrator unit 80.

As such, it will be understood that the technical configuration of the present invention described above can be implemented in other specific forms without changing the technical spirit or essential features of the present invention by those skilled in the art to which the present invention pertains.

Therefore, the embodiments described above should be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and their All changes or modified forms derived from equivalent concepts should be construed as being included in the scope of the present invention.

10: substrate 20: vibrator unit
22; Oscillator 22a: Vibration plate
22b: piezoelectric part 24: bridge
30: fixing part 40: sound insulation board
50: substrate 60: first vibrator unit
62: first vibrator 62a: first vibrating plate
62b: first piezoelectric unit 64: first bridge
70: first fixing part 80: second vibrating part
82: second vibrator 82a: second vibrator
82b: second piezoelectric unit 84: first bridge
90: first fixing part

Claims (5)

Board;
a plate-shaped vibrator unit in which a plurality of vibrators generating vibrations are horizontally disposed above the substrate, and a plate-shaped bridge connecting the vibrators horizontally to each other is formed; and
a fixing unit provided on an upper surface of the substrate and supporting a connection point between each vibrator of the vibrator unit and the bridge unit from below;
Ultrasonic transducer array, characterized in that it comprises a. According to claim 1,
The vibrator of the vibrator unit,
The ultrasonic transducer array, characterized in that composed of a polygonal plate, and the bridge unit connecting between the vertices of each of the vibrators. According to claim 1,
The ultrasonic transducer array, characterized in that the vibrator is formed of a rectangular plate, and the bridge unit connects four vibrator corners adjacent to each other in a cross shape. According to claim 1,
An ultrasonic transducer array, characterized in that a sound insulation plate is further provided above the bridge part and the vibrator part, and the upper part of the vibrator part is opened. Board;
A plurality of first vibrators formed in a plate shape and generating vibrations are disposed horizontally above the substrate, and a first vibrator formed with a first bridge formed of a plate-shaped bar that horizontally connects each of the first vibrators is formed. pride;
a first fixing part provided on an upper surface of the substrate and supporting a connection point between each first oscillator and the first bridge of the first oscillator part from below;
A plurality of second vibrators, which are formed in the shape of a plate and generate vibration, are horizontally arranged above the first bridge, and a second bridge formed of a plate-shaped bar that horizontally connects each of the second vibrators is the first bridge. a second vibrator unit formed above the vibrator; and
a second fixing part provided on an upper surface of the first fixing part and supporting a connection point between each second vibrator of the second vibrator part and the second bridge from below;
Ultrasonic transducer array, characterized in that it comprises a.

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