CN203618122U - Radio device - Google Patents

Abstract

A radio device comprises a shell, a circuit part, a conductor, a first piezoelectric plate, a second piezoelectric plate, a first conductive transmission part and a second conductive transmission part; the shell is provided with a containing part, one end of the containing part is provided with an opening, and the other end of the containing part is provided with a bottom surface; the circuit part is arranged on one side of the accommodating part and is tightly closed to the opening; the conductor is positioned in the accommodating part and is provided with a first side and a second side; the first piezoelectric sheet is positioned in the accommodating part and is arranged on the first side of the conductor; the second piezoelectric sheet is positioned in the accommodating part and arranged on the second side of the conductor; the first conductive transmission part is positioned in the accommodating part and is elastically and electrically connected between the bottom surface and the first piezoelectric sheet; the second conductive transmission part is positioned in the accommodating part and is electrically connected between the circuit part and the second piezoelectric sheet. The utility model discloses an electric conductor vibration makes first piezoelectric patches and second piezoelectric patches produce first signal and second signal respectively, can be the chance that radio reception device received multiple range or wider range.

Description

radio device

technical field

The utility model provides a sound receiving device, in particular to a piezoelectric sound receiving device.

Background technique

The radio device has become one of the most commonly used items in the daily life of modern people. All mobile communication devices, recording pens, music playback devices with recording functions, etc., all need good quality radio devices to receive external sounds, especially for The effect of speech spoken by the user.

Common sound receiving devices include condenser microphones and piezoelectric microphones. In traditional piezoelectric microphones, a vibrating membrane or elastic material is mostly attached to the human body to feel the sound wave pressure when the human body makes a sound, and to dissipate the sound wave pressure. Transmitted to the piezoelectric sheet, the structure of the piezoelectric sheet is changed by the pressure, and then a voltage is generated for processing.

However, traditional piezoelectric microphones use piezoelectric sheets to sense acoustic vibrations, and conductors are often attached with a layer of piezoelectric sheets, or conductors are covered with a layer of piezoelectric components. Therefore, the piezoelectric sheet can only be limited to the sound wave signal of a certain range, so that the sound wave signal outside the sound range limited by the piezoelectric sheet, or the sound wave signal with a wider sound range is prone to distortion.

Utility model content

In view of this, the utility model provides a sound receiving device, which makes the first piezoelectric sheet and the second piezoelectric sheet generate the first signal and the second signal respectively through the vibration of the conductor, so that the sound receiving device receives Opportunity for multiple registers or a wider range of registers.

The utility model proposes a sound receiving device, which includes a shell, a circuit part, a conductor, a first piezoelectric sheet, a second piezoelectric sheet, a first conductive transmission part and a second conductive transmission part. The casing has a receiving part, and an opening is formed at one end of the receiving part, and a bottom surface is formed at the other end of the receiving part. The circuit part is arranged on one side of the accommodating part and closes the opening. The conductor is located in the receiving portion and has a first side and a second side. The first piezoelectric sheet is located in the containing portion and arranged on the first side of the conductor. The second piezoelectric sheet is located in the containing portion and arranged on the second side of the conductor. The first conductive transmission part is located in the receiving part and elastically and electrically connected between the bottom surface and the first piezoelectric sheet. The second conductive transmission part is located in the receiving part and is electrically connected between the circuit part and the second piezoelectric sheet.

In an embodiment of the present invention, the above-mentioned sound collecting device further includes a vibration assisting part, and the vibration assisting part is located in the receiving part and disposed on the second piezoelectric sheet.

In an embodiment of the present invention, the housing further includes a sound receiving hole, which penetrates the bottom surface for receiving sound waves.

In one embodiment of the present invention, the above-mentioned first conductive transmission part is at least two conductive elastic bodies, and the above-mentioned conductive elastic bodies are arranged on the bottom surfaces of opposite sides of the accommodating part, and each conductive elastic body has a groove , the grooves are used to carry the first piezoelectric sheet.

In an embodiment of the present invention, the above-mentioned first conductive transmission part is a conductive elastic body, and the conductive elastic body is disposed on the bottom surface of the accommodating part.

In an embodiment of the present invention, the above-mentioned second conductive transmission part is a conductive wire, a conductive sheet, a conductor or a conductive spring.

In an embodiment of the present invention, the materials of the first piezoelectric sheet and the second piezoelectric sheet are different from each other.

In an embodiment of the present invention, the conductor is a metal plate, a metal column or a metal sheet, and the shell is a metal shell.

In an embodiment of the present invention, the first piezoelectric sheet, the second piezoelectric sheet, the conductor, and the bottom surface are juxtaposed with each other.

The utility model proposes a manufacturing method of a sound receiving device, comprising: providing a casing, the casing has a housing portion, and an opening is formed at one end of the housing portion, and a bottom surface is formed at the other end of the housing portion; a first conductive transmission portion Elastically electrically connected to the bottom surface; providing a conductor, the conductor has a first side and a second side, and the first side is provided with a first piezoelectric sheet, and the second side is provided with a second piezoelectric sheet; The conductor is placed in the receiving part, and the first piezoelectric sheet on the first side of the conductor is electrically connected to the first conductive transmission part; A second conductive transmission part is electrically connected between the bodies.

In addition, the first conductive transmission part is a conductive elastic body.

Wherein the second conductive transmission part is a conductive wire, a conductive elastic piece, a conductor or a conductive spring.

The materials of the first piezoelectric sheet and the second piezoelectric sheet are different from each other.

One side of the second piezoelectric sheet is further provided with a vibration auxiliary part.

To sum up, the radio device of the present utility model vibrates through the conductor, so that the first piezoelectric sheet and the second piezoelectric sheet generate the first signal and the second signal respectively, so that the radio device can receive various sound ranges or Opportunity for a wider vocal range.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments of the present invention will be described in detail below together with the accompanying drawings.

Description of drawings

Fig. 1 is a schematic cross-sectional view of a sound receiving device according to an embodiment of the present invention;

2A to 2C are schematic diagrams of a manufacturing method of a sound receiving device according to an embodiment of the present invention shown in FIG. 1;

Fig. 3 is a schematic cross-sectional view of a sound receiving device according to another embodiment of the present invention;

Fig. 4 is a schematic cross-sectional view of a radio device according to another embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a sound collecting device according to another embodiment of the present invention.

Explanation of reference signs:

1, 2, 3, 4: radio device

10: Housing

12: Circuit Department

14: Conductor

16: The first piezoelectric film

18: The second piezoelectric film

20, 20a, 20b: first conductive transmission part

21, 21a, 21b: conductive elastomer

22, 22a, 22b: second conductive transmission part

24: Vibration Auxiliary Department

100: Containment

102: opening

104, 104a: bottom surface

106: Sound hole

140: first side

142: second side

202: Groove

Detailed ways

In order to fully understand the present utility model, the following will illustrate the embodiments in detail with accompanying drawings, which are not intended to limit the present utility model.

FIG. 1 is a schematic cross-sectional view of a sound receiving device according to an embodiment of the present invention. As shown in Figure 1, a sound receiving device 1 includes a housing 10, a circuit part 12, a conductor 14, a first piezoelectric sheet 16, a second piezoelectric sheet 18, a first conductive transmission part 20 and a second conductive transmission part 22 . In practice, the conductor 14 , the first piezoelectric sheet 16 , the second piezoelectric sheet 18 , the first conductive transmission part 20 and the second conductive transmission part 22 are located between the casing 10 and the circuit part 12 . In this way, the sound collecting device 1 is, for example, a contact sound collecting device. The contact sound collecting device can be attached or pressed on the skin around the vocal part of the human body, and the contact sound collecting device can generate sound signals according to sound waves.

In detail, the conductor 14 is electrically connected between the first piezoelectric sheet 16 and the second piezoelectric sheet 18, wherein the first piezoelectric sheet 16 is electrically connected to the first conductive transmission part 20, and the first conductive transmission part 20 The casing 10 is electrically connected, the casing 10 is electrically connected to the negative pole of the circuit part 12 , and the second piezoelectric sheet 18 is electrically connected to the second conductive transmission part 22 , and the second conductive transmission part 22 is electrically connected to the positive pole of the circuit part 12 . In this way, the sound collecting device 1 receives sound waves to form a conduction loop, and then outputs sound signals.

The housing 10 includes, but is not limited to, a triangular cup, a square cup, a circular cup or a polygonal cup made of metal, for example. The casing 10 has a receiving portion 100 for receiving sound waves. An opening 102 is formed at one end of the receiving portion 100 , and a bottom surface 104 is formed at the other end of the receiving portion 100 . In addition, the housing 10 is electrically connected to the negative pole of the circuit part 12, therefore, when the first piezoelectric sheet 16, the first conductive transmission part 20, the housing 10 and the circuit part 12 conduct, the metal housing 10 will generate The polarity of the battery is negative, which has the effect of isolating external noise interference.

The circuit part 12 is disposed on one side of the receiving part 100 and closes the opening 102 . In this way, the circuit part 12 closes the opening 102 of the receiving part 100 so that the housing 10 and the circuit part 12 form a sealed space. Of course, the circuit part 12 includes components (not shown) such as capacitors, transistors, or amplifier circuits, which are used to receive and process the signals converted by the first piezoelectric sheet 16 and the second piezoelectric sheet 18, for example, after sampling and filtering. , amplifying and other operations to generate a sound signal, so as to transmit the sound signal to the speaker for playback or store in the electronic device (not shown in the figure).

The conductor 14 is disposed in the housing portion 100 , and is substantially arranged in parallel with the bottom surface 104 of the housing portion 100 . The conductor 14 is, for example, a metal plate, column or sheet, and the conductor 14 has a first side 140 and a second side 142, wherein the first side 140 is adjacent to the bottom surface 104 of the receiving portion 100, and the second side The side 142 is adjacent to the opening 102 of the receiving portion 100 . It is worth mentioning that, in this embodiment, the conductor 14 is a plate, and vibrates on the first side 140 or the second side 142 according to the pressure caused by the sound wave vibration.

In practice, the conductor 14 vibrates according to the sound wave, so that the first piezoelectric sheet 16 on the first side 140 generates a first signal according to the vibration of the conductor 14 , and the circuit part 12 receives and processes the first signal. Certainly, the conductor 14 vibrates according to the sound wave, so that the second piezoelectric sheet 18 on the second side 142 generates a second signal according to the vibration of the conductor 14 , and the circuit part 12 receives and processes the second signal. In this way, the sound receiving device 1 of the present utility model can receive sound wave vibrations in different sound ranges through the conductor 14, and output the first signal or the second sound wave in different sound ranges through the first piezoelectric sheet 16 or the second piezoelectric sheet 18. signal, and the circuit unit 12 receives the first signal, the second signal or the first signal and the second signal to convert it into a sound signal.

The first conductive transmission part 20 is located in the housing part 100 and elastically and electrically connected between the bottom surface 104 and the first piezoelectric sheet 16, wherein the first conductive transmission part 20 is, for example, two conductive elastic bodies 21, and these conductive elastic bodies 21 are disposed on the bottom surface 104 on two opposite sides of the receiving portion 100 , and each conductive elastic body 21 has a groove 202 for supporting the first piezoelectric piece 16 . In detail, the conductive elastic body 21 is, for example, elastic conductive glue or a conductive strip, and the number of the conductive elastic body 21 is two, and each conductive elastic body 21 is an L-shaped column. Therefore, both ends of the first piezoelectric piece 16 are disposed on the grooves 202 of the conductive elastic body 21 , so that the first piezoelectric piece 16 can generate an amplitude according to the vibration of the conductive body 14 , and then generate a first signal. In this way, the conductive elastic bodies 21 are elastically and electrically connected to the first piezoelectric sheet 16 .

For example, if the conductive body 14 vibrates on the first side 140 of the conductive body 14 according to the pressure caused by the sound wave vibration, the first piezoelectric sheet 16 will transmit the first signal to the housing 10 through the conductive elastic body 21 , the first signal is transmitted to the circuit part 12 through the casing 10 . In other embodiments, the first conductive transmission part 20 can be a conductive elastic body 21, and the conductive elastic body 21 can be located on the bottom surface 104 in the receiving part 100, for example, the conductive elastic body 21 is located in the central area of the bottom surface 104, and The first conductive transmission part 20 in this embodiment is the arrangement position of the two conductive elastic bodies 21 for illustrative purposes only, and is not limited to that shown in FIG. 1 .

The conductive elastomer 21 has elasticity and conductivity. Therefore, the conductive elastic body 21 is used to increase the vibration amplitude of the conductor 14, making the conductive body 14 pass through the conductive elastic body 21 to increase the vibration amplitude. When the vibration amplitude of the conductive body 14 is larger, the first piezoelectric sheet 16 or the second The pressure that the two piezoelectric sheets 18 are subjected to and the intensity of the converted signal are also stronger; under the same sound wave pressure, the sound receiving device 1 that has increased the conductive elastic body 21 can convert the sound receiving device 1 than the sound receiving device 1 without the conductive elastic body 21. The higher voltage makes the sound signal processed by the circuit part 12 clearer, thereby improving the sound collection sensitivity of the sound collection device 1 .

The second conductive transmission part 22 includes, but is not limited to, a conductive wire, a conductive elastic piece, a conductor or a conductive spring, for example. The second conductive transmission part 22 is located in the housing part 100 and is electrically connected between the circuit part 12 and the second piezoelectric sheet 18, wherein the second conductive transmission part 22 is, for example, a conductive shrapnel, and the second conductive transmission part 22 elastically It is electrically connected between the circuit part 12 and the second piezoelectric sheet 18 .

In addition, in other embodiments, the second conductive transmission part 22 is, for example, a conductive wire, and the second conductive transmission part 22 can be welded between the second piezoelectric sheet 18 and the circuit part 12 through solder paste. It can be seen from this that the second conductive transmission portion 22 is electrically connected between the circuit portion 12 and the second piezoelectric sheet 18 . When the conductive body 14 vibrates on the second side 142 of the conductive body 14 according to the pressure caused by the sound wave vibration, the second piezoelectric sheet 18 transmits the second signal to the circuit part 12 through the second conductive transmission part 22 .

The first conductive transmission part 20 and the second conductive transmission part 22 are electrically connected to the first piezoelectric sheet 16 and the second piezoelectric sheet 18 respectively, and the first conductive transmission part 20 is indirectly electrically connected to the circuit part 12 through the housing 10 , The second conductive transmission part 22 is directly electrically connected to the circuit part 12. For example, the first conductive transmission part 20 is used as a negative pole of the signal output to the circuit part 12, and the second conductive transmission part 22 is used as a signal output to the circuit part 12. positive pole of the signal. Therefore, the sound receiving device 1 transmits the first signal and the second signal to the circuit part 12 through the first conductive transmission part 20 and the second conductive transmission part 22, and receives the first signal or the second signal through the circuit part 12 to convert it into sound Signals, so that the sound receiving device 1 can receive a variety of sound ranges or a wider range of sound ranges.

The first piezoelectric sheet 16 is located in the receiving portion 100 and disposed on the first side 140 of the conductor 14 , and the second piezoelectric sheet 18 is located in the receiving portion 100 and disposed on the second side 142 of the conductor 14 . That is to say, the first piezoelectric sheet 16 , the second piezoelectric sheet 18 , the conductor 14 and the bottom surface 104 are juxtaposed to each other, and the first piezoelectric sheet 16 and the second piezoelectric sheet 18 are along the first side of the conductor 14 140 is disposed on the surface of the second side 142 for converting the kinetic energy generated by the vibration of the conductor 14 into electrical energy and outputting a signal.

In detail, the first piezoelectric sheet 16 and the second piezoelectric sheet 18 have the characteristic of generating electrical signals when subjected to mechanical pressure. When the first piezoelectric sheet 16 and the second piezoelectric sheet 18 are subjected to pressure, and the material The structure will be deformed. In order to resist the deformation of the structure arrangement, the first piezoelectric sheet 16 or the second piezoelectric sheet 18 will generate positive and negative charges on both sides of the pressure, and the positive and negative charges are carried out to eliminate the potential difference. Movement generates voltage. Therefore, in this embodiment, the sound receiving device 1 uses the first piezoelectric sheet 16 and the second piezoelectric sheet 18 to convert the vibration of the conductor 14 due to the sound wave pulse into a signal, and then takes the voltage signal therein to the circuit part 12 to process.

The materials of the first piezoelectric sheet 16 and the second piezoelectric sheet 18 can be piezoelectric ceramics, piezoelectric transistors or piezoelectric films. Piezoelectric ceramics such as: barium titanate (BaTiO3), lead titanate (PbTiO3), lead zirconate titanate (PZT) or lead zirconate titanate and silver composites (PZT/Ag composites), etc.; Common piezoelectric transistors are: lithium niobate, potassium niobate, quartz, tourmaline, sodium tartrate (Sodium tartrate), Rochelle salt (Rochelle salt), etc.; and piezoelectric thin films such as: zinc oxide (ZnO), etc. ; In addition, some of the natural high molecular substances and artificially synthesized polymers also have the piezoelectric properties described above.

It is worth noting that the first piezoelectric sheet 16 and the second piezoelectric sheet 18 can be piezoelectric sheets of different materials, for example, the first piezoelectric sheet 16 is a piezoelectric sheet that generates high frequency signals, and the second piezoelectric sheet 18 is, for example, a piezoelectric sheet that produces bass frequency signals. For example, the radio receiver 1 of the present utility model can receive treble and transmit the first signal through the first piezoelectric sheet 16, so that the circuit part 12 can receive and process the first signal with treble, or the radio receiver 1 can receive and transmit the second signal through the second piezoelectric sheet 18, so that the circuit part 12 receives and processes the second signal with the bass, and the circuit part 12 receives and processes the first signal and the second signal to output the signal with the treble and the bass Sound signals in the pitch range. Therefore, the sound collecting device 1 of the present invention can receive the sound range from treble to bass.

In this embodiment, the lengths of the first piezoelectric sheet 16, the second piezoelectric sheet 18 and the conductor 14 are equal, that is, the first piezoelectric sheet 16, the second piezoelectric sheet 18 overlap the surface of the conductor 14, Therefore, the conductor 14 can vibrate according to the sound wave to provide the first piezoelectric sheet 16 or the second piezoelectric sheet 18 to convert electric energy. In addition, in other embodiments, the lengths of the first piezoelectric sheet 16 and the second piezoelectric sheet 18 may be unequal; or the length of the first piezoelectric sheet 16 and the length of the conductor 14 may be unequal; or The length of the second piezoelectric sheet 18 and the length of the conductor 14 may be unequal, and the lengths of the first piezoelectric sheet 16, the second piezoelectric sheet 18 and the conductor 14 are visible to those skilled in the art. Freedom to design is required.

The sound collecting device 1 of this embodiment utilizes the ability of the first piezoelectric sheet 16 and the second piezoelectric sheet 18 to convert pressure into a signal, and can be used as a contact sound collecting device 1 . Taking the contact sound receiving device 1 as an example, it can be attached or pressed on the skin around the vocal part of the human body, such as the throat, under the ear, etc., and the conductive sound of the sound receiving device 1 can be made by means of the pressure generated by the sound wave when the human body makes a sound. The body 14 vibrates, and the first piezoelectric sheet 16 and the second piezoelectric sheet 18 are converted into the signal according to the vibration.

The intensity of the signal that the first piezoelectric sheet 16 or the second piezoelectric sheet 18 can produce is affected by the vibration amplitude that the conductor 14 exhibits according to the pressure it feels; The greater the pressure on the first piezoelectric sheet 16 or the second piezoelectric sheet 18 is, the stronger the signal converted by the first piezoelectric sheet 16 or the second piezoelectric sheet 18 will be. Under the same pressure generated by the sound wave, the length of the conductor 14 is directly proportional to the magnitude of the amplitude generated by it. Therefore, the longer the length of the conductor 14, the stronger the signal strength converted by the first piezoelectric sheet 16 and the second piezoelectric sheet 18 is. After that, it can also be converted into a stable signal and produce a clear sound signal. Therefore, in this example, a longer conductor 14 can be provided to improve the sensitivity of the sound collecting device 1 for sound collection.

The above is the introduction of the structure of the sound receiving device according to an embodiment of the present invention. Next, the structure of the sound receiving device shown in FIG. 1 will be taken as an example, and the manufacturing process of the sound receiving device will be described with reference to FIGS. 2A to 2C .

2A to 2C are schematic diagrams of a manufacturing method of the sound collecting device 1 according to an embodiment of the present invention.

Please refer to FIG. 2A , firstly, a casing 10 is provided. The casing 10 has a receiving portion 100 , an opening 102 is formed at one end of the receiving portion 100 , and a bottom surface 104 is formed at the other end of the receiving portion 100 . Next, two conductive elastic bodies 21 are provided on the bottom surface 104 on opposite sides of the receiving portion 100. These conductive elastic bodies 21 are, for example, two elastic conductive rubber strips, and each conductive elastic body 21 has a groove 202 to Make each conductive elastic body 21 present an L-shaped column. In this way, the first conductive transmission part 20 is the conductive elastic body 21 , and the first conductive transmission part 20 is elastically and electrically connected to the bottom surface 104 , as shown in FIG. 2 .

Referring to FIG. 2B , next, the first piezoelectric sheet 16 is disposed on the grooves 202 of the conductive elastic bodies 21 , so that both ends of the first piezoelectric sheet 16 are connected to the conductive elastic bodies 21 . Next, the conductor 14 is arranged on the first piezoelectric sheet 16 , and then the second piezoelectric sheet 18 is arranged on the conductor 14 . Therefore, the conductor 14 is arranged between the first piezoelectric sheet 16 and the second piezoelectric sheet 18, and the first piezoelectric sheet 16 is adjacent to the bottom surface 104 of the receiving portion 100, and the second piezoelectric sheet 18 is adjacent to the opening of the receiving portion 100. 102.

In addition, a conductor 14 can be provided in the manufacturing process, the conductor 14 has a first side 140 and a second side 142, and the first side 140 is provided with the first piezoelectric film 16, and the second side 142 is provided with the second piezoelectric film 18 , disposing the conductor 14 in the receiving portion 100 , and electrically connecting the first piezoelectric sheet 16 on the first side 140 of the conductor 14 to the first conductive transmission portion 20 . In this way, the conductor 14, the first piezoelectric sheet 16 and the second piezoelectric sheet 18 can be bonded in advance, and then the bonded first piezoelectric sheet 16, conductor 14 and second piezoelectric sheet 18 can be arranged together on the first conductive transmission part 20 . Therefore, workers can more conveniently carry out the manufacturing process of disposing the first piezoelectric sheet 16 , the conductor 14 and the second piezoelectric sheet 18 on the first conductive transmission part 20 .

Referring to FIG. 2C , after that, the circuit part 12 is sealed to the opening 102 at one end of the housing 10, so that the housing 10 and the circuit part 12 form a sealed space, and the circuit part 12 is electrically connected to the second piezoelectric film 18. There is a second conductive transport portion 22 . In practice, the circuit part 12 solders the second conductive transmission part 22 with solder paste, and the second conductive transmission part 22 is a conductive elastic piece. Therefore, when the circuit part 12 seals the opening 102 of the receiving part 100, the second conductive transmission part 22 is elastically and electrically connected to the second piezoelectric sheet 18 . In addition, in other embodiments, the second conductive transmission part 22 is, for example, a wire, and the second conductive transmission part 22 is welded between the circuit part 12 and the second piezoelectric sheet 18 by solder paste. When the circuit part 12 seals the receiving part When the opening 102 of 100 is opened, the second conductive transmission part 22 will be received by the receiving part 100 .

FIG. 3 is a schematic cross-sectional view of a sound collecting device according to another embodiment of the present invention. See Figure 3. The difference between the sound receiving device 2 in FIG. 3 and the sound receiving device 1 in FIG. 1 is that the sound receiving device 2 further includes a vibration auxiliary part 24, and the housing 10 further includes a sound receiving hole 106. In addition, the second conductive transmission part 22a is a wire. In detail, the vibration assisting portion 24 is located in the receiving portion 100 and disposed on the second piezoelectric sheet 18 , and the vibration assisting portion 24 is used to increase the vibration amplitude of the conductor 14 . For example, the vibration assisting part 24 may be a material with higher density and heavier weight, such as metal or a heavy hammer, so as to increase the vibration amplitude of the conductor 14 when vibrating.

Taking Fig. 3 as an example, the first piezoelectric sheet 16, the conductor 14 and the second piezoelectric sheet 18 are each a plate body, and the vibration auxiliary part 24 is a metal hammer, which is arranged on the second piezoelectric sheet 18. For example, the vibration auxiliary part 24 is disposed in the central area of the second piezoelectric sheet 18 to increase the weight of the conductor 14 when vibrating, so that the conductor 14 can adjust its vibration amplitude according to the pendulum principle. In addition, the metal weight used can be set as an uneven weight, so that the conductor 14 can increase the vibration amplitude according to the difference in gravity.

When the amplitude of the vibration of the conductor 14 is greater, the pressure received by the first piezoelectric sheet 16 or the second piezoelectric sheet 18 and the intensity of the converted signal are also stronger; under the same sound wave pressure, the vibration auxiliary part is added 24 can convert a larger voltage than the sound receiving device 1 without the vibration auxiliary part 24, and make the sound signal processed by the circuit part 12 clearer, thereby improving the sound collection sensitivity of the sound receiving device 2.

The housing 10 has a sound receiving hole 106 penetrating through the bottom surface 104 a for receiving sound waves generated outside the sound receiving device 2 to the receiving portion 100 , such as vibrations generated by human speech. In this way, the sound collecting device 2 of this embodiment can be used as a non-contact sound collecting device 2 . Taking the non-contact sound receiving device 2 as an example, it can receive the pressure generated by the sound wave when the human body makes a sound through the sound receiving hole 106, so that the conductor 14 of the sound receiving device 2 vibrates, and the first piezoelectric sheet 16 and the second piezoelectric sheet 16 are connected to each other. Electrode 18 converts the signal into said signal according to the vibration.

In addition, the second conductive transmission part 22a is, for example, a wire, and the second conductive transmission part 22a can be welded between the circuit part 12 and the second piezoelectric sheet 18 by solder paste. When the circuit part 12 seals the opening 102 of the receiving part 100 , the second conductive transmission part 22a will be disposed in the housing part 100 and used to transmit the second signal.

FIG. 4 is a schematic cross-sectional view of a sound collecting device according to another embodiment of the present invention. See Figure 4. The difference between the sound receiving device 3 in FIG. 4 and the sound receiving device 1 in FIG. 1 is that the first conductive transmission part 20a is a conductive elastic body 21a, and the conductive elastic body 21a is disposed on the bottom surface 104 of the receiving part 100 . In practice, the conductive elastic body 21a is disposed on the central area of the bottom surface 104, so that there are no supports at both ends of the first piezoelectric sheet 16, and the first piezoelectric sheet 16 and the first conductive transmission portion 20a present a T-shape. In this way, the first piezoelectric sheet 16 transmits the first signal to the circuit part 12 through the first conductive transmission part 20 a.

FIG. 5 is a schematic cross-sectional view of a sound collecting device according to another embodiment of the present invention. See Figure 5. The difference between the sound receiving device 4 in FIG. 5 and the sound receiving device 1 in FIG. 1 is that the first conductive transmission part 20b is a conductive elastic body 21b, and the conductive elastic body 21b is arranged in the housing part 100 and electrically connected elastically. Between the bottom surface 104 and the first piezoelectric sheet 16 , the conductive elastic body 21 b is disposed on the bottom surface 104 of one of two opposite sides of the receiving portion 100 , as shown in FIG. 5 . Similarly, the second conductive transmission part 22b is, for example, a conductor, and the second conductive transmission part 22b can be electrically connected between the circuit part 12 and the second piezoelectric sheet 18 at a position corresponding to the conductive elastic body 21b. When the circuit part 12 is sealed and accommodated When the opening 102 of the part 100 is opened, the second conductive transmission part 22b and the first conductive transmission part 20b will sandwich or hold the conductor 14, and the first piezoelectric sheet 16 and the second piezoelectric sheet 18 are respectively arranged on the sides of the conductor 14. One of the two ends of the conductor 14 is suspended in the receiving portion 100 , as shown in FIG. 5 .

In other embodiments, the second conductive transmission part 22b and the first conductive transmission part 20b can clamp or hold one of the two ends of the conductor 14, and the first piezoelectric sheet 16 and the second piezoelectric sheet 18 are respectively arranged on the conductive Two sides of the body 14 , for example, the right end of the conductor 14 is suspended in the accommodating portion 100 ; or the left end of the conductor 14 is suspended in the accommodating portion 100 . This embodiment does not limit the manner in which the second conductive transmission part 22b and the first conductive transmission part 20b sandwich or hold the first piezoelectric sheet 16 , the conductor 14 and the second piezoelectric sheet 18 .

Certainly, the sound collecting device 4 of the present utility model can receive the sound wave vibration of different sound ranges through the conductor 14, and output the first signal or the second signal of different sound ranges through the first piezoelectric sheet 16 or the second piezoelectric sheet 18, And the circuit part 12 receives the first signal, the second signal or the first signal and the second signal and converts it into a sound signal.

To sum up, the utility model provides a sound receiving device, which makes the first piezoelectric sheet and the second piezoelectric sheet generate the first signal and the second signal respectively through the vibration of the conductor, and the The transmission part and the second conductive transmission part transmit the first signal and the second signal to the circuit part, so that the circuit part receives the first signal and the second signal and converts them into sound signals. In this way, the sound receiving device of the present utility model can receive opportunities of multiple sound ranges or a wider range of sound ranges. In addition, the sound-receiving device has the advantages of easy manufacture (low cost) and large follow-up adjustment flexibility, so the object of the utility model can indeed be achieved.

Although the preferred embodiment of the utility model has been disclosed above, the utility model is not limited to the above-mentioned embodiment, and any person skilled in the art can make some modifications without departing from the scope disclosed in the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims (9)

1. an audio signal reception device, is characterized in that, comprising:

One housing, has a resettlement section, and this one end, resettlement section forms an opening, and this resettlement section other end forms a bottom surface;

One circuit part, is arranged at this resettlement section one side and closely sealed this opening;

One electric conductor, is positioned at this resettlement section and has one first side and one second side;

One first piezoelectric patches, is positioned at this resettlement section and is arranged at this first side of this electric conductor;

One second piezoelectric patches, is positioned at this resettlement section and is arranged at this second side of this electric conductor;

One first conduction transport part, in this resettlement section and be flexibly electrically connected between this bottom surface and this first piezoelectric patches; And

One second conduction transport part, in this resettlement section and be electrically connected between this circuit part and this second piezoelectric patches.

2. audio signal reception device as claimed in claim 1, more comprises a vibration assisted parts, and this vibration assisted parts is positioned at this resettlement section and is arranged on this second piezoelectric patches.

3. audio signal reception device as claimed in claim 1, its middle shell more comprises a MIC, this MIC runs through this bottom surface.

4. audio signal reception device as claimed in claim 1, wherein this first conduction transport part is at least two conductive elastomers, these described conductive elastomers are disposed on this bottom surface of these relative both sides, resettlement section, and respectively this conductive elastomer has a groove, these described grooves are in order to carry this first piezoelectric patches.

5. audio signal reception device as claimed in claim 1, wherein this first conduction transport part is a conductive elastomer, this conductive elastomer is disposed on this bottom surface of this resettlement section.

6. audio signal reception device as claimed in claim 1, wherein this second conduction transport part is conductor wire, conducting strip, conductor or power spring.

7. audio signal reception device as claimed in claim 1, wherein this first piezoelectric patches is different each other from the material of this second piezoelectric patches.

8. audio signal reception device as claimed in claim 1, wherein this electric conductor is a metal plate, a columnar metal body or a Metal Flake body, and this housing is metal shell.

9. audio signal reception device as claimed in claim 1, wherein this first piezoelectric patches, this second piezoelectric patches, this electric conductor and this bottom surface are arranged side by side each other.

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