Surface sound generating structure

Abstract

The present application relates to a surface sound generating structure, which includes a hollow structure, a plurality of sound cavity structures, and a sound cavity integrated control system. The hollow structure includes a sound generating surface, a non-sound generating surface, and a seal. The plurality of sound cavity structures are arranged at intervals on the sound generating surface. Each sound cavity structure includes a silica gel body, a sound generating device, and a glass sheet. The silica gel body and the sound generating device are arranged on the sound generating surface. The glass sheet is arranged on the silica gel body. A sound cavity is formed between the silica gel body and the sound generating surface, and the sound generating device is located in the sound cavity and is in contact with the glass sheet. The sound cavity integrated control system is electrically connected to the plurality of sound cavity structures. The sound cavity integrated control system includes a circuit module and a sound cavity integrated control component, and the sound cavity integrated control component is connected to the lead-out wires of the plurality of sound generating devices through the circuit module. When the plurality of sound cavity structures generate low frequencies, each sound generating device can buffer and release part of the vibration amount through the glass sheet, solve the resonance phenomenon in the low-frequency state, and thus improve the problem of low-frequency distortion.

Description

Technical Field

[0001] This application relates to a loudspeaker, and particularly to a surface sound - generating structure. Background Art

[0002] Safety, applicability, and durability are summarized as the reliability of the structure. The structural design of existing loudspeakers generally requires a separate design of the reliability structure according to the characteristics of the loudspeaker and its adaptation. If the structure needs to be changed, the whole structure needs to be changed, which not only increases the cost but also prolongs the cycle. In addition, the biggest reliability defect of the loudspeaker is that it cannot actively achieve the functions of waterproof and moisture - proof, and the high - temperature and high - humidity range is - 40 - 80 degrees Celsius, which is prone to low - frequency distortion. Summary of the Invention

[0003] The embodiments of this application provide a surface sound - generating structure to solve the problems that the existing surface sound - generating structure has no waterproof and moisture - proof function and is prone to low - frequency distortion.

[0004] To solve the above - mentioned technical problems, this application is implemented as follows:

[0005] In a first aspect, a surface sound - generating structure is provided, which includes: a hollow structure, including a sound - emitting surface, a non - sound - emitting surface, and a seal. The seal is disposed at the edge of the sound - emitting surface and the non - sound - emitting surface, and a hollow cavity is formed among the sound - emitting surface, the seal, and the non - sound - emitting surface; a plurality of sound - cavity structures, spaced apart on the sound - emitting surface. Each sound - cavity structure includes a silica gel body, a sound - generating device, and a glass sheet. The silica gel body and the sound - generating device are disposed on the sound - emitting surface, the glass sheet is disposed on the silica gel body, a sound cavity is formed between the silica gel body and the sound - emitting surface, the sound - generating device is located in the sound cavity and is in contact with the glass sheet; a sound - cavity integrated control system, electrically connected to the plurality of sound - cavity structures. The sound - cavity integrated control system includes a circuit module and a sound - cavity integrated control component. The circuit module is connected to the lead - out wires of the plurality of sound - generating devices, and the sound - cavity integrated control component is connected to the circuit module; wherein when the sound - cavity integrated control system controls the plurality of sound - cavity structures to generate low - frequency, each sound - generating device can buffer and release part of the vibration amount through the glass sheet.

[0006] In the first possible implementation manner of the first aspect, the hollow structure further includes an upper silica - gel - based glue layer and a lower silica - gel - based glue layer, and the seal is adhesively bonded to the non - sound - emitting surface and the sound - emitting surface respectively through the upper silica - gel - based glue layer and the lower silica - gel - based glue layer.

[0007] In the second possible implementation manner of the first aspect, the seal includes an intermediate material and glue layers disposed on both sides of the intermediate material. The intermediate material is made of a super - strong compressive, high - temperature and high - humidity - resistant water - absorbing material.

[0008] Combined with the second possible implementation manner of the first aspect, in the third possible implementation manner of the first aspect, the intermediate material includes urethane material, acrylic material or polyisobutylene material.

[0009] In the fourth possible implementation manner of the first aspect, the sounding surface has a black ink area and a transparent area, and a plurality of sound cavity structures and the sound cavity integrated control system are located in the black ink area.

[0010] In the fifth possible implementation manner of the first aspect, it further includes: an amplification module, connected to the sound cavity integrated control system, and the amplification module is configured to amplify the input WeChat signal and keep the variation law of the amplified signal consistent with that of the input WeChat signal.

[0011] Combined with the fifth possible implementation manner of the first aspect, in the sixth possible implementation manner of the first aspect, the amplification module uses a power amplifier board, and the power amplifier board is provided with a power amplifier input, a power amplifier output and a control interface.

[0012] Combined with the fifth possible implementation manner of the first aspect, in the seventh possible implementation manner of the first aspect, it further includes: an EQ adjustment module, connected to the amplification module, and the EQ adjustment module has an output current and output voltage protection function. When the output current reaches the maximum allowable value or the output voltage exceeds the peak voltage, the EQ adjustment module automatically limits the magnitude of the output voltage or current by adjusting the source input voltage value, so that the voltage or current operates within the maximum allowable limit range.

[0013] In the eighth possible implementation manner of the first aspect, it further includes: an acrylic adhesive, which is coated on the seal.

[0014] In the ninth possible implementation manner of the first aspect, it further includes: a glue part, which is arranged around the seal to bond the sounding surface and the non-sounding surface together.

[0015] The advantages of this application compared with the prior art are:

[0016] The surface sounding structure of this application sets a glass sheet above the interior of the silica gel body and makes the sounding device contact the glass sheet, so that each sounding device can buffer and release part of the vibration amount through the glass sheet, solve the resonance phenomenon in the low-frequency state, and thus improve the problem of low-frequency distortion. At the same time, the silica gel body and the sounding surface form an independent sound cavity, and the sounding device is placed in the sound cavity, which can achieve the functions of active waterproof and moisture-proof. Description of the Drawings

[0017] The drawings described herein are used to provide a further understanding of this application, form a part of this application, and the illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0018] Figure 1 It is a schematic diagram of the planar sound - generating structure according to an embodiment of the present application;

[0019] Figure 2 It is a schematic diagram of the hollow structure according to an embodiment of the present application;

[0020] Figure 3 It is a schematic diagram of the seal according to an embodiment of the present application;

[0021] Figure 4 It is a schematic diagram of the sound cavity structure according to an embodiment of the present application;

[0022] Figure 5 It is a schematic diagram of the power amplifier board according to an embodiment of the present application. Detailed implementation manners

[0023] To make the purpose, technical solutions and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0024] For existing loudspeakers, the biggest reliability defect is that they cannot actively achieve the functions of waterproofing and moisture - proofing, and their high - temperature and high - humidity resistance range is - 40 - 80 degrees Celsius. At the same time, there are problems such as easy generation of low - frequency distortion.

[0025] The planar sound - generating structure of the present application is provided with a plurality of silica gels on the sound - generating surface, and the sound - generating devices are placed inside the silica gels, which can achieve the functions of active waterproofing and moisture - proofing. At the same time, the present application also sets glass flakes above the inside of the silica gels, so that each sound - generating device can buffer and release part of the vibration amount through the glass flakes, solve the resonance phenomenon in the low - frequency state, and thus improve the problem of low - frequency distortion.

[0026] Please refer to Figure 1 And Figure 2 , Figure 1 It is a schematic diagram of the planar sound - generating structure according to an embodiment of the present application, Figure 2 It is a schematic diagram of the hollow structure according to an embodiment of the present application. As shown in the figure, the planar sound - generating structure 1 includes a hollow structure 2, a plurality of sound cavity structures 3 and a sound cavity integrated control system 4. The hollow structure 2 includes a sound - generating surface 21, a non - sound - generating surface 22 and a seal 23. A plurality of sound cavity structures 3 are arranged at intervals on the sound - generating surface 21, and the sound cavity integrated control system 4 is electrically connected to the plurality of sound cavity structures 3. As Figure 1 shown, the sound - generating surface 21 has a black ink area 211 and a transparent area 212, and the plurality of sound cavity structures 3 and the sound cavity integrated control system 4 are located in the black ink area 211, but not limited thereto. The sound cavity integrated control system 4 drives the sound - generating surface 21 to vibrate to generate audio by controlling the plurality of sound cavity structures 3.

[0027] Please refer toFigure 3 and refer to Figure 2 , Figure 3 which is a schematic diagram of a seal in an embodiment of the present application. As shown in the figure, the seal 23 is disposed at the edge of the sound - generating surface 21 and the non - sound - generating surface 22. In this embodiment, the seal 23 is a three - layer sealing design structure, that is, glue layers 232 are coated on both sides of the intermediate material 231, and the intermediate material 231 and the glue layers 232 on both sides form the seal 23. The intermediate material 231 is made of a super - strong compression - resistant, high - temperature and high - humidity - resistant water - absorbing material, such as urethane - based materials, acrylic - based materials or polyisobutylene - based materials, etc., to enhance gas retention and low water - vapor transmission. The thickness of the glue layers 232 on both sides is usually very thin, specifically defined according to the thickness of the bonding surface. The width of the glue layer 232 is generally about 1 / 3 of that of the intermediate material 231, but not limited thereto. Further, an acrylic adhesive (not shown in the figure) is also coated on the seal 23, which can ensure a non - damaged seal on the seal 23. In addition, the intermittent temperature range of the acrylic adhesive is - 400 - 1210 °C.

[0028] Refer back to Figure 2 As shown, a hollow cavity 201 is formed between the sound - generating surface 21, the seal 23 and the non - sound - generating surface 22. In this embodiment, the hollow structure 2 further includes an upper silicone - based glue layer 24 and a lower silicone - based glue layer 25. The seal 23 is adhesively bonded to the non - sound - generating surface 22 and the sound - generating surface 21 through the upper silicone - based glue layer 24 and the lower silicone - based glue layer 25 respectively. The upper silicone - based glue layer 24 and the lower silicone - based glue layer 25 can, on the premise of ensuring sealing, also ensure that the air in the hollow cavity 201 is not likely to flow out and the sound pressure does not increase. This silicone - structured material can transmit vibration to the non - sound - generating surface 22 to relieve vibration, with stable displacement and reduced resonance, thereby improving the distortion in the low - frequency band.

[0029] Please refer to Figure 4 and refer to Figure 1 , Figure 4 which is a schematic diagram of the sound cavity structure in an embodiment of the present application. As shown in the figure, a plurality of sound cavity structures 3 and a sound cavity integrated control system 4 are located in the hollow cavity 201. Each sound cavity structure 3 includes a silicone body 31, a sound - generating device 32 and a glass sheet 33. The silicone body 31 and the sound - generating device 32 are disposed on the sound - generating surface 21. A sound cavity is formed between the silicone body 31 and the sound - generating surface 21, and the sound - generating device 32 is located in the sound cavity. At the same time, the glass sheet 33 is disposed above the inside of the silicone body 31 and makes the sound - generating device 32 in contact with the glass sheet 33. Thus, when the sound - generating device 32 is in the low - frequency state, it will buffer and release a certain amount of vibration through the uppermost glass sheet 33, solving the resonance phenomenon in the low - frequency state. In addition, the lead - out wire 321 of the sound - generating device 32 is led out to the outside of the sound cavity for connection with the sound cavity integrated control system 4.

[0030] Refer to again Figure 1 As shown, the sound cavity integrated control system 4 refers to a control system that unifies multiple independent sound cavity structures 3. The sound cavity integrated control system 4 includes a circuit module 41 and a sound cavity integrated control component 42. The circuit module 41 is connected to the lead-out wires 321 of multiple sound generating devices 32, and the sound cavity integrated control component 42 is connected to the circuit module 41. In this way, the lead-out wires 321 of multiple sound generating devices 32 are finally aggregated in the same sound cavity integrated control component 42, ensuring the synchronization of audio and the same voltage at both ends of the independent sound cavity, and the same rise time and fall time of the sound generating device 32, ensuring that there is no delay and no interference between the sound cavity structures 3, so that the sound field has high uniformity during the audio playback process, and more perfectly reflects the advantages of planar sound generation.

[0031] The planar sound generation structure 1 of the present application is provided with a plurality of silica gel bodies 31 on the sound generating surface 21 to form a plurality of independent sound cavities, and the sound generating devices 32 are placed in the sound cavities to achieve the functions of active waterproofing and moisture-proofing. Moreover, when the sound cavity integrated control system 4 controls multiple sound cavity structures 3 to generate low frequencies, each sound generating device 32 can buffer and release part of the vibration amount through the glass sheet 33, solve the resonance phenomenon in the low-frequency state, and further improve the problem of low-frequency distortion.

[0032] At the same time, the present application also adopts a seal 23 with a three-layer seal design between the sound generating surface 21 and the non-sound generating surface 22. Utilizing the super waterproofing and moisture-proofing of the seal 23, it can not only ensure the stable formation of the sound cavity by the airflow inside the hollow cavity 201, strengthen the sound field of the hollow structure 2, but also improve the sealing reliability of the hollow cavity 201. In addition, through actual tests, the distortion degree of the planar sound generation structure 1 of the present application is lower than that of a speaker sound system, and the worst can be controlled within 5%. Moreover, it can withstand 100 hours at a high temperature of 110 - 120 °C and 48 hours at a low temperature of -40 °C. It can be said to be a major breakthrough in the field of planar sound generation technology.

[0033] In one embodiment, refer to again Figure 1 As shown, the planar sound generation structure 1 further includes an amplification module 5. The amplification module 5 is connected to the sound cavity integrated control system 4. As Figure 1 shown, the amplification module 5 is located in the black ink area 211 of the sound generating surface 21. The amplification module 5 is set to amplify the input micro signal and keep the change law of the amplified signal consistent with that of the input micro signal, that is, amplify without distortion. The amplification module 5 uses a power amplifier board, and the power amplifier board is provided with a power amplifier input, a power amplifier output, and a control interface. Specifically, please refer to Figure 5, which is a schematic diagram of a power amplifier board according to an embodiment of the present application. As shown in the figure, there are 4 channels for power amplifier input to meet the audio input interfaces with 4 different parameter requirements, including a Bluetooth audio input interface, a common standard AUX audio input interface, an audio input interface matching the 5W 8-ohm power amplifier audio output interface, and a differential audio input interface. The power amplifier output interface has a function of dynamically adjusting the output impedance to match speaker loads with different impedances. The power amplifier board is provided with a single-chip microcomputer circuit, which can collect the changes of audio signals in real time and convert the changes of audio signals into communication data based on a serial port. This data is used for the interaction of the LED atmosphere light control system to achieve different display effects of the atmosphere light with the change of audio signals. At the same time, the power amplifier has the function of real-time sampling of the output voltage and current of the power amplifier. The power amplifier board has 1 Ethernet communication interface, which can receive external Ethernet digital audio data, decode it, set the sound effect, and drive the speaker through the power amplifier output for playback.

[0034] In one embodiment, referring back to Figure 1 as shown, the planar sound emission structure 1 further includes an EQ adjustment module 6. The EQ adjustment module 6 is connected to the amplification module 5. As Figure 1 shown, the EQ adjustment module 6 is located in the black ink area 211 of the sounding surface 21. The EQ adjustment module 6 has functions of protecting the output current and output voltage. When the output current reaches the maximum allowable value or the output voltage exceeds the peak voltage, the EQ adjustment module 6 automatically limits the magnitude of the output voltage or current by adjusting the source input voltage value, so that the voltage or current works within the maximum allowable limit range, thus playing a role in protecting the power amplifier and the speaker load. Further, the EQ adjustment module 6 has functions of real-time monitoring of the output current and output voltage. The resistance of the connected load can be calculated through the output voltage and output current values, and whether there is an open circuit or short circuit fault of the load can be judged through the resistance value; it has a function of importing EQ voltage (abbreviation: sound effect) software. The audio range is 20HZ - 20000HZ. Simply speaking, EQ is different voltage values corresponding to different frequencies. The EQ is designed to be adjustable in 11 segments to make up for the deficiencies in the sound quality of the original audio file and ensure the best sound quality state.

[0035] In one embodiment, the planar sound emission structure 1 further includes a glue part (not shown in the figure). The glue part is arranged around the seal 23 to bond the sounding surface 21 and the non-sounding surface 22 together. Specifically, glue is applied around the seal 23 to bond the sounding surface 21 and the non-sounding surface 22 together. Before applying the glue, a certain pressure needs to be applied using a special pressure tool, and the pressure state is controlled according to the bonding situation and the required height. Glue is applied according to the pressure state to form a glue part, realizing the secondary improvement of the sealing performance, waterproof and moisture-proof functions of the hollow cavity 201. At the same time, the effect of the pressure ensures the stability of sound propagation, reduces the resonance to the minimum, and secondarily improves the distortion of the low frequency caused by large resonance.

[0036] In summary, the present application provides a surface sound generating structure, in which a glass sheet is arranged above the inside of the silica gel body, and the sound generating device is in contact with the glass sheet, so that each sound generating device can buffer and release part of the vibration amount through the glass sheet, solve the resonance phenomenon in the low-frequency state, and further improve the problem of low-frequency distortion. At the same time, the silica gel body and the sound generating surface form an independent sound cavity, and the sound generating device is placed in the sound cavity, so that the functions of active waterproof and moisture-proof can be realized.

[0037] At the same time, the present application also adopts a seal with a three-layer seal design between the sound generating surface and the non-sound generating surface. By virtue of the super waterproof and moisture-proof performance of the seal, it can not only ensure the stable formation of the sound cavity by the airflow inside the hollow cavity, strengthen the sound field of the hollow structure, but also improve the sealing reliability of the hollow cavity.

[0038] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the presence of another identical element in the process, method, article or device including that element.

[0039] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A surface sound generating structure, characterized in that, Comprising: A hollow structure, including a sounding surface, a non-sounding surface, and a seal. The seal is disposed at the edge of the sounding surface and the non-sounding surface. A hollow cavity is formed among the sounding surface, the seal, and the non-sounding surface. The hollow structure further includes an upper silicone-based glue layer and a lower silicone-based glue layer. The seal is adhesively bonded to the non-sounding surface and the sounding surface respectively through the upper silicone-based glue layer and the lower silicone-based glue layer. The seal includes an intermediate material and glue layers disposed on both sides of the intermediate material. The intermediate material is made of a super-strong compressive, high-temperature and high-humidity resistant water-absorbing material, and the intermediate material includes a urethane-based material, an acrylic-based material, or a polyisobutylene-based material; A plurality of sound cavity structures, spacedly disposed on the sounding surface. Each sound cavity structure includes a silicone body, a sounding device, and a glass sheet. The silicone body and the sounding device are disposed on the sounding surface, and the glass sheet is disposed on the silicone body. A sound cavity is formed between the silicone body and the sounding surface. The sounding device is located in the sound cavity. The silicone body realizes an active waterproof and moisture-proof function for the sounding device, and the sounding device is in contact with the glass sheet. Each sounding device can cache and release part of its vibration amount through the glass sheet to solve the resonance phenomenon in the low-frequency state; A sound cavity integrated control system, electrically connected to the plurality of sound cavity structures. The sound cavity integrated control system includes a circuit module and a sound cavity integrated control component. The circuit module is connected to the lead-out wires of the plurality of sounding devices, and the sound cavity integrated control component is connected to the circuit module; Wherein when the sound cavity integrated control system controls the plurality of sound cavity structures to generate low frequencies, each sounding device can cache and release part of its vibration amount through the glass sheet.

2. The surface sound generating structure according to claim 1, wherein, The sounding surface has a black ink area and a transparent area, and the plurality of sound cavity structures and the sound cavity integrated control system are located in the black ink area.

3. The surface sound generating structure according to claim 1, characterized in that, Further comprising: An amplification module, connected to the sound cavity integrated control system. The amplification module is configured to amplify the input WeChat signal and keep the change law of the amplified signal consistent with that of the input WeChat signal.

4. The surface sound generating structure according to claim 3, wherein The amplification module uses a power amplifier board, and the power amplifier board is provided with a power amplifier input, a power amplifier output, and a control interface.

5. The surface sound generating structure according to claim 3, wherein Further comprising: An EQ adjustment module, connected to the amplification module. The EQ adjustment module has an output current and output voltage protection function. When the output current reaches the maximum allowable value or the output voltage exceeds the peak voltage, the EQ adjustment module automatically limits the magnitude of the output voltage or current by adjusting the source input voltage value, so that the voltage or current operates within the maximum allowable limit range.

6. The surface sound generating structure according to claim 1, wherein Further comprising: An acrylic adhesive, which is coated on the seal.

7. The surface sound generating structure according to claim 1, characterized in that, Further comprising: A glue member, which is disposed around the seal to bond the sounding surface and the non-sounding surface together.

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