CN111510801A - Miniature loudspeaker sound box with ultra-thin and ultra-low frequency structure - Google Patents
Miniature loudspeaker sound box with ultra-thin and ultra-low frequency structure Download PDFInfo
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- CN111510801A CN111510801A CN201910426791.7A CN201910426791A CN111510801A CN 111510801 A CN111510801 A CN 111510801A CN 201910426791 A CN201910426791 A CN 201910426791A CN 111510801 A CN111510801 A CN 111510801A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
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Abstract
The invention relates to the technical field of sound boxes, in particular to a micro loudspeaker sound box with an ultra-thin and ultra-low frequency structure, which comprises a box body and a loudspeaker, wherein a sound cavity is arranged in the box body, the inner wall of the inner cavity of the sound cavity protrudes to form an accommodating groove for accommodating the loudspeaker, the loudspeaker is fixed in the accommodating groove, the height of the accommodating groove is smaller than that of the sound cavity, a lower opening for enabling a magnetic bowl of the loudspeaker to leak is arranged at the position, corresponding to the bottom of the loudspeaker, on the box body, an upper opening is arranged at the position, corresponding to the upper part of the loudspeaker, on the box body, the upper opening is sealed through a stainless steel sheet, the outer wall of the expanding groove is not in contact with the inner wall of the sound cavity, expanding cavities are arranged at two sides of the accommodating groove in the sound cavity, the height of the expanding cavities is smaller than that of the sound cavity, the openings of the, the thickness is little, small, the composite use demand to have better audio.
Description
Technical Field
The invention relates to the technical field of sound boxes, in particular to a miniature loudspeaker sound box with an ultra-thin and ultra-low frequency structure.
Background
With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among many mobile devices, mobile phones and tablet computers are the most common and portable mobile terminal devices. And at present, the cell-phone, all toward this aspect development of ultra-thin of panel computer, the fuselage is ultra-thin, mean that inside component also needs to carry out ultra-thin design, for example, the audio amplifier, both have high quality, the tone quality of high-quality, the audio, accord with ultra-thin again, small design needs, in order to obtain high-quality tone quality, the audio, just have to make the speaker audio amplifier have better low frequency tone quality, however, to the speaker audio, in order to obtain better low frequency tone quality, need increase the volume of audio amplifier, increase the volume can make the volume grow of speaker audio amplifier, and ultra-thin, small user demand conflicts, therefore, current speaker audio amplifier is difficult to satisfy the user demand, do not have the low frequency, the tone quality of ultralow frequency, the audio amplifier audio is relatively poor.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a micro loudspeaker sound box with an ultra-thin and ultra-low frequency structure, which has the advantages of good ultra-low frequency sound quality, small thickness, small volume, composite use requirements and better sound effect.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a micro loudspeaker sound box with an ultra-thin and ultra-low frequency structure comprises a box body and a loudspeaker accommodated in the box body, wherein a sound cavity is arranged in the box body, the inner wall of an inner cavity of the sound cavity protrudes to form an accommodating groove for accommodating the loudspeaker, the loudspeaker is fixed in the accommodating groove, the height of the accommodating groove is smaller than that of the sound cavity, a lower opening which enables a magnetic bowl of the loudspeaker to leak outwards is arranged at the position, corresponding to the bottom of the loudspeaker, of the box body, an upper opening is arranged at the position, corresponding to the upper part of the loudspeaker, of the box body and is sealed through a stainless steel sheet, the outer wall of the expansion groove is not in contact with the inner wall of the sound cavity, expansion cavities are arranged at two sides of the accommodating groove in the sound cavity, the height of the expansion cavities is smaller than that of the sound cavity, the opening of the expansion cavities faces one side of the magnetic bowl of the loudspeaker, gas adsorption, the containing groove is provided with a sound guide channel leading to the outside of the sound box.
Furthermore, the outer wall surface of the magnetic bowl of the loudspeaker does not exceed the bottom end surface of the sound box.
Furthermore, the loudspeaker is not in contact with the steel sheet.
Furthermore, the containing groove is formed by downward protrusion of a corresponding position of the top side cavity wall inside the sound cavity, a mounting step structure matched with the loudspeaker structure is arranged at the groove opening of the containing groove, and the bottom of the loudspeaker is abutted against the inner wall of the bottom of the sound cavity.
Furthermore, the sound box comprises an upper box body and a lower box body, the upper box body and the lower box body are enclosed into the sound cavity, the joint surface of the upper box body and the lower box body is of a step surface structure, and the accommodating groove and the expansion cavity are arranged on the upper box body.
Furthermore, a breathable sound conduction damping cloth is arranged at the opening of the sound conduction channel.
Furthermore, the height of the containing groove is smaller than that of the expansion cavity, the distance between the steel sheet and the sounding component of the loudspeaker is 0.9-1.23 mm, and the distance between the sounding component of the loudspeaker and the expansion damping cloth is 0.8-1.0 mm.
Further, the thickness of box is 4.1 mm.
The invention has the beneficial effects that: adopt above-mentioned scheme, the thickness of audio amplifier is little, satisfies the user demand of ultra-thin equipment, and audio cavity, accepting groove, dilatation chamber have constituted the ultralow frequency structure, very big slowing down audio cavity air flow, have increased the vocal order, be equivalent to very big volume in audio cavity, and the audio amplifier has lower low frequency audio, simultaneously, still possesses the well high frequency audio of better undistorted, and the audio has more abundant pleasing to the eye audio, has improved the result of use.
Drawings
The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional structure of an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an upper case according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a lower box according to an embodiment of the present invention.
FIG. 5 is a schematic diagram showing a comparison of frequency response curves of the present invention and a conventional loudspeaker.
FIG. 6 is a schematic diagram showing the impedance curve comparison between the present invention and the existing speaker.
Wherein: the loudspeaker comprises a box body 1, an upper box body 11, a lower box body 12, a sound cavity 101, an accommodating groove 102, a sound guide channel 103, an expansion cavity 104, a loudspeaker 2, expansion damping cloth 3, gas adsorption materials 4, sound guide damping cloth 5 and steel sheets 6.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1: referring to fig. 1-4, a micro speaker box with an ultra-thin and ultra-low frequency structure includes a box body 1 and a speaker 2 accommodated in the box body 1, the inside of the box body 1 is hollow to form a sound cavity 101, the box body 1 includes an inverted U-shaped upper box body 11 and a U-shaped lower box body 12, the upper box body 11 and the lower box body 12 enclose the sound cavity 101, the joint surface of the upper box body 11 and the lower box body 12 is a step surface structure, the upper box body 11 and the lower box body 12 are connected by laser welding, the laser welding uniformity and the sealing performance are good, so as to improve the sound effect of the box, the upper and lower parts in the embodiment are referred to the direction of the micro speaker box in use, the upper part in the installation and use state is an upper side, otherwise, an accommodating groove 102 protruding downwards and used for installing the speaker 2 is arranged at the middle part of the sound cavity 101 on the surface of the upper box body 11, the height of the accommodating groove 102 is lower than the height of, the upper box body 11 is provided with a hollow-out upper opening at the corresponding part of the containing groove 102, the upper opening is provided with a steel sheet 6 made of 0.2mm stainless steel, the loudspeaker 2 is not contacted with the steel sheet 6, the upper box body 11 is provided with an embedded groove for arranging the steel sheet at the corresponding part, the outer surface of the steel sheet is flush with the upper surface of the upper box body, the distance between the steel sheet 6 and the sound producing part of the loudspeaker 2 is 0.9mm-1.23mm, the distance is small, the thickness is reduced, the area of the steel sheet is not less than the loudspeaker range, the distance is properly arranged, the high-frequency sound effect in the loudspeaker box is improved, the comprehensive sound effect is improved, the sound effect distortion is reduced, the lower opening 121 which is provided with a hollow-out structure and is convenient for the magnetic bowl of the loudspeaker to leak out is arranged at the bottom end surface of the lower box body 12, the thickness is reduced, the assembly is convenient, the vibrating diaphragm of the loudspeaker, the upper end of the loudspeaker 2 is embedded in the step groove, the bottom end of the loudspeaker 2 is abutted against the lower opening, the bottom end structure of the loudspeaker 2 is matched with the shape structure of the lower opening, the loudspeaker is positioned, the loudspeaker is firmly installed in the box body, in addition, the structure facilitates the reduction of the whole thickness, one side edge of the box body 1 is provided with a sound guide channel 103, the inner end of the sound guide channel 103 extends into the sound cavity 101 along a straight line from the side edge of the box body 1, the inner end of the sound guide channel 103 is communicated into the accommodating groove 102, correspondingly, the groove wall of the accommodating groove 102 connected with the sound guide channel 103 is higher than the other three groove walls of the accommodating groove 102, the sound guide channel has enough arrangement space, the fixing effect on the loudspeaker is improved, the opening of the sound guide channel 103 is provided with the air-permeable sound guide damping cloth 5, the sound effect is facilitated to be improved, the entering of external dust and foreign matters is avoided, the outer wall of the containing groove 102 is not contacted with the inner wall of the sound cavity 101, two expansion cavities 104 are arranged at two sides of the containing groove 102 in the sound cavity 101, each expansion cavity 104 is formed by the downward protrusion of the inner wall of the box body at the position corresponding to the upper box body 11, each expansion cavity 104 is rectangular, the loudspeaker is also of a rectangular structure, the height of each expansion cavity 104 is smaller than that of the sound cavity 101, the opening of each expansion cavity 104 faces to the lower side, the height of each expansion cavity 104 is higher than that of the containing groove 103, breathable expansion damping cloth 3 is arranged at the opening of each expansion cavity 104, a gas adsorbing material 4 is filled in each expansion cavity 104, the gas adsorbing material 4 is selected from porous zeolite with increased volume, and the like and is of a porous structure, can adsorb gas and slow down air flow rate, the outer wall of each expansion cavity 104 is not contacted with the outer wall of the containing groove 103 and the inner wall of the sound cavity 101, the height of each containing groove is smaller than that of each, the whole thickness is 4.1mm, meet the ultra-thin use requirement of the panel computer, mobile phone, refer to fig. 5, compared with existing baffle box, the volume of this baffle box is very small (equal), adopt this structure, there is obvious promotion in low frequency band and middle frequency band, the low frequency sound is reproduced effectively, the sound pressure is promoted, refer to fig. 6, see from the impedance curve, compared with existing baffle box, under the very small (equal) situation of volume of this baffle box, adopt this structure, the frequency is diminished, the sound is more abundant in the sense of hearing, greatly improve tone quality, the audio effect of the loudspeaker baffle box, first, the sound cavity 101 forms a pronunciation cavity, this cavity forms the resonance or resonant cavity, the sound wave that the loudspeaker 2 sends fluctuates in the sound cavity 101, thus promote the air in the sound cavity to penetrate the dilatation damping cloth 3 and enter the dilatation cavity 104, because the dilatation cavity 104 is filled with the gas absorbing material 4, the air pushed into the expansion cavity 104 is absorbed by the porous structure of the gas absorption material 4, the air flow rate is slowed down, the acoustic compliance in the sound cavity is increased, namely the volume of the sound cavity is increased, the purpose of reducing the frequency is achieved, secondly, the height of the accommodating groove is smaller than that of the sound cavity, the height of the accommodating groove is smaller than that of the expansion cavity, the opening of the expansion cavity is downward, the sound membrane of the loudspeaker is positioned at the upper side, the distance between the surface of the vibrating membrane of the loudspeaker 2 and the expansion damping cloth is 0.8mm-1.0mm, the direction is changed when the sound wave pushes the air to move, the accommodating groove and the sound cavity wall are independent, the accommodating groove and the expansion cavity are independent, a guide structure is formed between the wall of the accommodating groove, the wall of the sound cavity and the wall of the expansion cavity, the sound wave pushes the air to move, so that the air penetrates through the expansion damping cloth from bottom to top and enters the expansion cavity, and the sound wave pushes the air to, the air flow rate is reduced, the air flow rate is further reduced by the air inlet direction from bottom to top, after entering the expansion cavity from bottom to top, the air flow rate is diffused to the periphery under the blocking effect of the top wall of the expansion cavity, and is fully contacted with the gas adsorption material in the expansion cavity to be fully adsorbed, and then the air flow rate is further reduced, wherein the air flow rate is mainly reduced, the accommodating groove, the height setting of the expansion cavity and the opening orientation setting of the expansion cavity are used for promoting the direction to be changed at least twice in the process that the sound wave pushes the air in the sound cavity to enter the expansion cavity, so that the flow rate is greatly reduced, compared with the prior structure, the frequency of the sound box is further reduced, the sound box has better low frequency, thirdly, the sound cavity has better comprehensive sound effect, the loudspeaker sends out a sound effect through the sound guide channel, the sound wave can generate resonance or resonance effect in the sound cavity to generate resonance or resonance sound effect, be equipped with the stainless steel sheet on the box that the upper portion of speaker corresponds, the steel sheet makes and produces, the high frequency audio, and can not become invalid, and the steel sheet has better radiating effect and protective effect, finally make this audio amplifier have lower low frequency + medium-high frequency + comprehensive audio of speaker, it is richer to have, more pleasing to the eye music, the very big result of use that improves the audio amplifier, two dilatation chambeies distribute in the accepting groove both sides, the distribution direction and the speaker department of accepting groove lead the sound channel and lead the sound direction mutually perpendicular, make and form the comprehensive audio of speaker + low frequency, the very big comprehensive tone quality that improves this audio amplifier, improve the audio, both sides distribute, the law of compound sound wave propagation, accepting groove and dilatation chamber are contactless, mutual independence, avoid producing and interfering.
Example 2: referring to fig. 1-4, a micro speaker box with ultra-thin and ultra-low frequency structure comprises a box body 1 and a speaker 2 accommodated in the box body 1, wherein the inside of the box body 1 is hollow to form a sound cavity 101, the box body 1 comprises an inverted U-shaped upper box body 11 and a U-shaped lower box body 12, the upper box body 11 and the lower box body 12 enclose the sound cavity 101, the joint surface of the upper box body 11 and the lower box body 12 is a step surface structure, the upper box body 11 and the lower box body 12 are connected by laser welding, the upper part and the lower part in the embodiment are taken as reference by the direction of the micro speaker box body when in use, the upper part in the installation and use state is an upper side, otherwise, a downwardly convex rectangular accommodating groove 102 for installing the speaker 2 is arranged at the middle part of the bottom end surface of the upper box body 11 corresponding to the sound cavity 101, the height of the accommodating groove 102 is lower than that of the sound cavity 101, the groove inside of the accommodating groove 102 at the corresponding part on the upper box body 11 is an, the upper opening is provided with a steel sheet 6 made of 0.2mm stainless steel, the loudspeaker 2 is not contacted with the steel sheet 6, the loudspeaker 2 is of a rectangular structure, the corresponding position on the upper box body 11 is provided with an embedded groove for arranging the steel sheet, the outer surface of the steel sheet is flush with the upper surface of the upper box body, the distance between the steel sheet 6 and the sound producing part of the loudspeaker 2 is 1mm, the distance is small, the thickness is reduced, the area of the steel sheet is not smaller than the range of the loudspeaker, the distance is properly arranged, the high-frequency sound effect in the loudspeaker box is improved, the comprehensive sound effect is improved, the sound effect distortion is reduced, the lower box body 12 is provided with a lower opening 121 which is of a hollow structure and is convenient for the magnetic bowl of the loudspeaker to leak out, the bottom end surface of the magnetic bowl of the loudspeaker 2 does not leak out of the bottom end surface of the lower box body 12, the thickness is reduced, the assembly, the bottom end of the loudspeaker 2 is abutted against the lower opening, the bottom end structure of the loudspeaker 2 is matched with the shape structure of the lower opening to position the loudspeaker, so that the loudspeaker is firmly installed in the box body, in addition, the whole thickness is reduced by the structure, one side edge of the box body 1 is provided with a sound guide channel 103, the inner end of the sound guide channel 103 extends into the sound cavity 101 along a straight line from the side edge of the box body 1, the inner end of the sound guide channel 103 is communicated into the accommodating groove 102, correspondingly, the groove wall of the accommodating groove 102 connected with the sound guide channel 103 is higher than the other three groove walls of the accommodating groove 102, so that the sound guide channel has enough arrangement space, the fixing effect on the loudspeaker is improved, the ventilating sound guide damping cloth 5 is arranged at the opening of the sound guide channel 103, the sound effect is improved, the entering of external dust and foreign matters is avoided, the sound effect of the loudspeaker can be directly sent out by the structure of, the containing groove 102 is positioned in the middle of the sound cavity 101, the outer wall of the containing groove 102 is not in contact with the inner wall of the sound cavity 101, two rectangular expansion cavities 104 are arranged at two sides of the containing groove 102 in the sound cavity 101, the expansion cavities 104 are formed by downward protruding of the inner wall of the box body corresponding to the upper box body 11, the expansion cavities 104 are rectangular, the loudspeaker is also rectangular, the height of the expansion cavities 104 is less than that of the sound cavity 101, the opening of the expansion cavities 104 faces to the lower side, the height of the expansion cavities 104 is higher than that of the containing groove 103, the opening of the expansion cavities 104 is provided with air-permeable expansion damping cloth 3, the expansion cavities 104 are filled with gas adsorbing materials 4, the gas adsorbing materials 4 are selected from porous zeolite with increased volume and the like and are porous structures, can absorb gas and slow down air flow rate, the outer wall of the expansion cavities 104 is not in contact with the outer wall of the containing groove 103 and the inner wall of the sound cavity 101, and the height of the containing groove is less, the sound box structure has small thickness, the whole thickness is 4.1mm, the ultra-thin use requirement of a tablet personal computer and a mobile phone is met, firstly, the sound cavity 101 forms a sound cavity body which forms a resonance or resonant cavity body, the sound wave emitted by the loudspeaker 2 fluctuates in the sound cavity 101, so that the air in the sound cavity is pushed to penetrate through the expansion damping cloth 3 to enter the expansion cavity 104, the expansion cavity 104 is filled with the gas absorption material 4, the air pushed into the expansion cavity 104 is absorbed by the porous structure of the gas absorption material 4, the air flow rate is reduced, the acoustic compliance in the sound cavity is increased, the volume of the sound cavity is increased, the aim of reducing the frequency is fulfilled, the loudspeaker with the rectangular structure is convenient to set and has enough power, the expansion cavity with the rectangular structure is convenient to set and large in volume, the sound box structure can bear more gas absorption materials, the structure is matched with the sound box, the thickness is reduced, the filling quantity of the gas adsorption material in the expansion cavity is controllable, the filling quantity is changed, different air flow rate adjustment is realized, different low-frequency sound effects of the sound box are realized, the controllability and the flexibility are stronger, secondly, the height of the accommodating groove is smaller than that of the sound cavity, the height of the accommodating groove is smaller than that of the expansion cavity, the opening of the expansion cavity is downward, the sound film of the loudspeaker is positioned at the upper side, the distance between the surface of the vibrating diaphragm of the loudspeaker 2 and the expansion damping cloth is 0.8-1.0 mm, the direction is changed when the sound wave pushes the air to move, the accommodating groove and the sound cavity wall are independent, the accommodating groove and the expansion cavity are independent, a guide structure is formed among the wall of the accommodating groove, the wall of the sound cavity and the wall of the expansion cavity, the air is guided to push the sound wave to move, so that the air penetrates through the expansion damping cloth from bottom to top to enter the expansion cavity, the air flow rate is further reduced from the air inlet direction from bottom to top, after entering the expansion cavity from bottom to top, the air flow rate is further reduced, the air flow rate is mainly reduced under the blocking effect of the top wall of the expansion cavity, the air flow rate is fully adsorbed by fully contacting with the gas adsorption material in the expansion cavity, the air flow rate is further reduced, the air flow rate is mainly reduced, the accommodating groove, the height of the expansion cavity and the opening orientation of the expansion cavity are arranged, the direction is changed at least twice in the process that the sound wave pushes the air in the sound cavity to enter the expansion cavity, so that the flow rate is greatly reduced, compared with the existing structure, the frequency of the sound box is further reduced, the sound box has better low frequency, and thirdly, the sound cavity has better comprehensive sound effect, the loudspeaker sends out a sound effect through a sound guide channel, the sound wave can generate resonance or resonance effect in the sound cavity to generate resonance or resonance sound effect, and a stainless steel sheet is arranged on the box body, the steel sheet makes and produces, the high frequency audio, and can not become invalid, and the steel sheet has better radiating effect and protection effect, finally make this audio amplifier have the synthetic audio of lower low frequency + medium-high frequency + speaker, it is abundanter to have, more pleasing to the eye music, the very big result of use that improves the audio amplifier, two dilatation chambeies distribute in the accepting groove both sides, the distribution direction and the speaker department of accepting groove lead the sound channel and lead the sound direction mutually perpendicular, make and form the synthetic audio of speaker + low frequency, the very big comprehensive tone quality who improves this audio amplifier, the improvement audio, both sides distribute, the law of compound sound wave propagation, contactless between accepting groove and dilatation chamber, mutually independent, avoid producing and interfere.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiment according to the present invention are within the scope of the present invention.
Claims (8)
1. A micro loudspeaker sound box with ultra-thin and ultra-low frequency structure comprises a box body and a loudspeaker accommodated in the box body, wherein a sound cavity is arranged in the box body,
the inner wall of the inner cavity of the sound cavity protrudes to form an accommodating groove for accommodating the loudspeaker, the loudspeaker is fixed in the accommodating groove, the height of the accommodating groove is less than that of the sound cavity, the position of the box body corresponding to the bottom of the loudspeaker is a lower opening for enabling the magnetic bowl of the loudspeaker to leak outside, the position of the box body corresponding to the upper part of the loudspeaker is an upper opening, the upper opening is sealed by a stainless steel sheet, the outer wall of the expansion groove is not contacted with the inner wall of the sound cavity,
the sound cavity is provided with an expansion cavity at two sides of the containing groove, the height of the expansion cavity is smaller than the height of the sound cavity, an opening of the expansion cavity faces one side of the magnetic bowl of the loudspeaker, gas adsorption materials are filled in the expansion cavity, breathable expansion damping cloth is arranged at the opening of the expansion cavity, the outer wall of the expansion cavity is not in contact with the outer wall of the containing groove, and the containing groove is provided with a sound guide channel leading to the outside of the loudspeaker box.
2. The ultra-thin ultra-low frequency structure micro speaker enclosure of claim 1, wherein the outer wall of the magnetic bowl of the speaker does not extend beyond the bottom end of the enclosure.
3. The ultra-thin ultra-low frequency structure micro speaker box as claimed in claim 1, wherein the speaker is not in contact with the steel sheet.
4. The ultra-thin ultra-low frequency structure micro speaker box according to claim 1, wherein the receiving groove is formed by a corresponding portion of the top wall of the sound cavity protruding downward, a mounting step structure matching with the speaker structure is provided at the groove opening of the receiving groove, and the bottom of the speaker abuts against the inner wall of the bottom of the sound cavity.
5. The ultra-thin ultra-low frequency structure micro speaker box as claimed in claim 1, wherein the speaker box comprises an upper box and a lower box enclosing the sound cavity, the abutting surface of the upper box and the lower box is a step surface structure, and the receiving groove and the expansion cavity are disposed on the upper box.
6. The ultra-thin ultra-low frequency structure micro-speaker box as claimed in claim 1, wherein the opening of the sound-guiding channel is provided with a sound-guiding damping cloth.
7. The ultra-thin ultra-low frequency structure micro speaker box as claimed in claim 1, wherein the height of the receiving groove is less than the height of the expansion cavity, the distance between the steel sheet and the sound generating component of the speaker is 0.9mm-1.23mm, and the distance between the sound generating component of the speaker and the expansion damping cloth is 0.8mm-1.0 mm.
8. The ultra-thin ultra-low frequency structure micro speaker box as claimed in claim 1, wherein the thickness of the box body is 4.1 mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115396793A (en) * | 2022-08-31 | 2022-11-25 | 浙江豪声电子科技股份有限公司 | High-amplitude loudspeaker with self-pressure relief function and testing method |
| CN115396793B (en) * | 2022-08-31 | 2023-05-19 | 浙江豪声电子科技股份有限公司 | High-amplitude loudspeaker with self-pressure relief function |
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| CN111510801B (en) | 2021-03-12 |
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