CN212727419U - Micropore sound producing loudspeaker front cavity and external member - Google Patents

Abstract

The embodiment of the utility model discloses micropore sound production speaker front chamber is applied to electron technical field, and this micropore sound production speaker front chamber includes: the acoustic transducer comprises a shell, a micro sound outlet, a damping ring and an acoustic energy conversion assembly with a porous structure; the shell is of a hollow structure and comprises an end face and a front cavity mounting opening, the micro sound outlet is formed in the end face of the shell, and the damping ring is arranged on the front cavity mounting opening; the sound energy conversion assembly is fixed in the cavity of the shell, is fixed on the end face of the shell and is positioned between the micro sound outlet and the damping ring, and the sound energy conversion assembly is provided with a through hole which is opposite to the micro sound outlet. The micropore sounding loudspeaker front cavity can sound in a micropore mode, when the micropore sounding loudspeaker external member is matched with a loudspeaker, the area of a sounding caliber of the loudspeaker can be reduced, the occupied space of the sounding caliber of the loudspeaker on a device is saved, and production cost is reduced.

Description

Micropore sound producing loudspeaker front cavity and external member

Technical Field

The utility model belongs to the technical field of the electron, especially, relate to a micropore sound production speaker antechamber and external member.

Background

The application of the loudspeaker is wide, the loudspeaker can be seen everywhere in life, and the technology is mature. However, the existing loudspeakers all produce sound with large caliber, and sound outlets are all required to be large and are made into a plane shape to present good sound. Because the size of the sounding caliber can not be changed, the applicability of the loudspeaker is limited, even the situation that the design of a main product needs to be designed according to the size of the sounding caliber of the loudspeaker appears, and the large-caliber traditional loudspeaker is difficult to meet the requirements of full-screen and large-screen electronic products.

SUMMERY OF THE UTILITY MODEL

The utility model provides a micropore sound production speaker antechamber and external member aims at solving current speaker sound production bore big, the limited problem of suitability that causes.

The embodiment of the utility model provides a micropore acoustic speaker front chamber, include:

the acoustic transducer comprises a shell, a micro sound outlet, a damping ring and an acoustic energy conversion assembly with a porous structure; the shell is of a hollow structure and comprises an end face and a front cavity mounting opening, the micro sound outlet is formed in the end face of the shell, and the damping ring is arranged on the front cavity mounting opening; the acoustic energy conversion assembly is fixed in the cavity of the shell, is fixed on the end face of the shell and is positioned between the micro sound outlet and the damping ring, and the acoustic energy conversion assembly is provided with a through hole which is opposite to the micro sound outlet.

Further, the acoustic energy conversion assembly comprises: the acoustic energy conversion pad is fixedly attached to one side, located on the inner cavity of the shell, of the end face of the shell; the through hole is formed in the acoustic energy conversion pad.

Furthermore, the acoustic energy conversion pad is circular, and the through hole is formed in the center of the acoustic energy conversion pad.

Further, the shell is in a hollow cylindrical shape, the end face is in a circular shape, and the micro sound outlet is formed in the circle center of the end face.

Further, the acoustic energy conversion assembly further comprises: a plurality of acoustic energy conversion blocks; the acoustic energy conversion blocks are arranged at preset intervals, are uniformly fixed on the acoustic energy conversion pad and do not shield the through holes.

Further, the shape of the acoustic energy conversion block is a trapezoidal fillet block.

Further, the damping ring is specifically an S-shaped acoustic wave damping ring.

Furthermore, a front cavity positioning step is arranged at the front cavity mounting opening; the front cavity positioning step is in butt joint with the loudspeaker and used for limiting the depth of the loudspeaker connected into the front cavity of the micropore sounding loudspeaker.

Furthermore, the diameter of the micro sound outlet hole is 1-1.5 mm.

The embodiment of the utility model provides a micropore sound production speaker external member, include: loudspeaker and the front cavity of the micropore sounding loudspeaker; the loudspeaker is arranged on the front cavity mounting opening of the front cavity of the micropore sounding loudspeaker.

As can be seen from the above embodiment of the present invention, the front cavity of the micropore sound producing loudspeaker comprises a micro sound hole formed on the end surface of the housing, and a damping ring arranged on the mounting port of the front cavity of the housing, and an acoustic energy conversion assembly with a porous structure fixed in the cavity of the shell, the acoustic energy conversion assembly is provided with a through hole, the through hole is opposite to the micro sound outlet, after the front cavity of the micro-hole sounding loudspeaker is connected with the loudspeaker, sound waves emitted by the loudspeaker are emitted from the micro sound outlet, the rest sound waves are eliminated by the sound energy conversion component, the sound waves transmitted from the micro sound outlet holes cannot be interfered, the sound wave transmission efficiency is enhanced, and the damping ring prevents the sound wave from leaking, further enhances the efficiency of sound wave propagation, can send out high-quality tone quality only by a small hole, reduces the sounding caliber of the loudspeaker, saves the occupied space of the sounding caliber of the loudspeaker on a device, and improves the applicability of the loudspeaker in an electronic product.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 is a schematic structural diagram of a front cavity of a micropore sound production loudspeaker provided by an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a front cavity of a micropore sound production speaker provided by an embodiment of the present invention;

fig. 3 is an exploded view of the front cavity of the micropore sound producing speaker provided by the embodiment of the present invention;

fig. 4 is a schematic structural diagram of a speaker in a micropore sound production speaker kit according to an embodiment of the present invention;

fig. 5 is another schematic structural diagram of a speaker in a micropore sound production speaker kit according to an embodiment of the present invention;

figure 6 is a schematic diagram of a configuration of a microporous sound producing speaker kit in an embodiment of the present invention;

figure 7 is another schematic diagram of the construction of a microporous sound producing speaker kit in accordance with an embodiment of the present invention.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, fig. 1 is the embodiment of the present invention provides a schematic structural diagram of a front cavity of a micropore sound-producing speaker, fig. 2 is the embodiment of the present invention provides a schematic structural diagram of an internal structure of a front cavity of a micropore sound-producing speaker, fig. 3 is the embodiment of the present invention provides an explosion diagram of a front cavity of a micropore sound-producing speaker. This micropore sound production speaker front chamber can dock with the speaker, constitutes micropore sound production speaker external member, and the sound that the speaker sent is received to this micropore sound production speaker front chamber of during operation to handle, go out sound transmission through offering in the positive little shape phonate hole in this micropore sound production speaker front chamber, this micropore sound production speaker front chamber mainly includes:

the acoustic transducer comprises a shell 10, a micro sound outlet 20, a damping ring 30 and an acoustic energy conversion assembly 40 with a porous structure;

the shell 10 is a hollow structure and comprises an end surface 11 and a front cavity mounting port 12, and the micro sound outlet 20 is opened on the end surface 11 of the shell 10. The diameter of the micro sound outlet 20 is set according to the speaker size. The ratio of the diameter of the micro sound outlet 20 to the size of the loudspeaker can be 1:13, and the specific diameter of the micro sound outlet 20 is 1-1.5 mm.

The cross-section of the housing 10 may be circular, oval or square, preferably circular, i.e. the housing 10 is a cylinder with a circular front cavity mounting opening 12 and the end face 11 is circular and has a hollow cavity.

The material of the housing 10 may be plastic, wood, metal, ceramic, marble, etc., and plastic is preferred.

Preferably, the micro sound outlet holes 20 are arranged at the center of the circular end face 11 to make sound emission more uniform.

Further, a damping ring 30 is provided at the front chamber mounting port 12. The interface between the front cavity mounting port 12 and the speaker is sealed to prevent sound leakage.

The acoustic energy conversion assembly 40 is fixed in the cavity of the housing 10, specifically, on the end surface 11 of the housing 10, and is located between the micro sound outlet 12 and the damping ring 30, the acoustic energy conversion assembly 40 has a through hole 41, and the through hole 41 is opposite to the micro sound outlet 12. The acoustic energy conversion assembly 40 functions to cancel sound waves hitting the inner wall of the housing 10 among sound waves emitted from the speaker.

Further, the acoustic energy conversion assembly 40 includes: an acoustic energy conversion pad 42; the acoustic energy conversion pad 42 is fixedly attached to the end surface 11 of the housing 10 and is located on one side of the cavity of the housing 10, i.e., on the inner bottom surface of the housing 10.

The acoustic energy conversion pad 42 is provided with a through hole 41, the acoustic energy conversion pad 42 may be one or more, preferably circular, the through hole 41 is opened at the center of the acoustic energy conversion pad 42, and may also be square, triangular, etc., and the through hole 41 is disposed at the center of the acoustic energy conversion pad 42. The material is preferably melamine, and may be a material having a porous structure and facilitating absorption of sound waves, such as a PE (polyethylene crosslinked) foam material or a rubber foam material.

Further, the acoustic energy conversion assembly 40 further comprises: a plurality of acoustic energy conversion blocks 43; the acoustic energy conversion blocks 43 are arranged at preset intervals and fixed on the acoustic energy conversion pad 42 uniformly, and the acoustic energy conversion blocks are arranged to avoid the through holes 41 and not to shield the through holes 41, so that the acoustic waves are transmitted out of the through holes 41.

Preferably, the shape of the acoustic energy conversion block 43 is a trapezoidal round block, and may also be a block of a circle, a square, a triangle, etc. The material is preferably melamine, and can also be a material which has a porous structure and is beneficial to absorbing sound waves, such as PE foam material, rubber foam material and the like.

When the front cavity of the microporous sound-producing speaker is installed, the acoustic energy conversion pad 42 is pasted on the bottom of the cavity of the housing 10 by glue, and if a plurality of acoustic energy conversion pads 42 are provided, the acoustic energy conversion pads 42 are pasted in alignment. When the acoustic energy conversion pad 42 is flatly attached, the centers of circles of the micro sound outlet holes 20 on the shell 10 are concentrically aligned, and then a plurality of acoustic energy conversion blocks 43 are uniformly arranged at preset intervals and flatly attached on the acoustic energy conversion pad 42.

In the embodiment, the front cavity of the micropore sounding loudspeaker comprises a micro sounding hole arranged on the end surface of the shell and a damping ring arranged on the mounting port of the front cavity of the shell, and an acoustic energy conversion assembly with a porous structure fixed in the cavity of the shell, the acoustic energy conversion assembly is provided with a through hole, the through hole is opposite to the micro sound outlet, after the front cavity of the micro-hole sounding loudspeaker is connected with the loudspeaker, sound waves emitted by the loudspeaker are emitted from the micro sound outlet, the rest sound waves are eliminated by the sound energy conversion component, the sound waves transmitted from the micro sound outlet holes cannot be interfered, the sound wave transmission efficiency is enhanced, and the damping ring prevents the sound wave from leaking, further enhances the efficiency of sound wave propagation, can send out high-quality tone quality only by a small hole, reduces the sounding caliber of the loudspeaker, saves the occupied space of the sounding caliber of the loudspeaker on a device, and improves the applicability of the loudspeaker in an electronic product.

Further, the damping ring 30 is a S-shaped sound wave damping ring, which is circular and is installed on the front cavity installation opening 12 to prevent sound waves from leaking, thereby improving the effectiveness of sound waves propagating from the speaker to the front cavity of the micropore sound production speaker. The S-shaped acoustic wave damping ring 30 may be made of rubber, silicone, polyurethane, epoxy resin, butyl rubber, or the like, and rubber is preferable.

Furthermore, a front cavity positioning step 13 is arranged at the front cavity mounting port 12, and the front cavity positioning step 13 is in butt joint with the loudspeaker and used for limiting the depth of the loudspeaker connected into the front cavity of the micropore sounding loudspeaker. Carry out straight butt joint installation with the preceding chamber installing port 12 of the sound production mouth end of speaker corresponding this micropore vocal ware front chamber, install promptly to reach when preceding chamber location step 13 and put in place, this micropore vocal speaker front chamber transmits the external world after with the sound treatment that the speaker sent, and the convenience and the accuracy of installation can be improved in the setting of preceding chamber location step 13.

Further, the embodiment of the utility model provides a micropore sound production speaker external member is still provided, including micropore sound production speaker front chamber 100 and speaker 200, micropore sound production speaker front chamber 100 is just aforementioned embodiment this micropore sound production speaker front chamber. Referring to fig. 4 and 5, fig. 4 and 5 are schematic structural views of the speaker 200, the speaker 200 has a speaker sound-emitting port end 50, the speaker sound-emitting port end 50 is installed in a straight butt joint manner corresponding to the front cavity installation port 12 of the micro-hole sound-emitting device front cavity 100, and is installed in place when being installed to the front cavity positioning step 13, and the sound emitted by the speaker 200 is transmitted to the outside after being processed by the micro-hole sound-emitting speaker front cavity 100. Referring to fig. 6 and 7, fig. 6 and 7 are schematic structural views of the micro-porous sound-generating speaker kit in the embodiment of the present invention, that is, the assembled structural views of the micro-porous sound-generating speaker front cavity 100 and the speaker 200.

It should be noted that, the loudspeaker belongs to the electroacoustic component, and along with the signal of telecommunication of input, the vibrating diaphragm produces vibration and then promotes the air and sends the sound, and when the signal of telecommunication changed, the vibrating diaphragm of loudspeaker also can follow the vibration that produces different states and send different sounds. If there is not enough big air area in front of the diaphragm, if it is a solid baffle, only a small through hole is left in the middle of the solid plate, when the sound wave generated by the vibration of the diaphragm hits the solid baffle, the sound wave hitting other positions of the solid plate except the through hole will generate various reflection, refraction and standing waves, which will be mixed in the part of the sound wave passing through the through hole to form interference, and the part of the sound wave transmitted from the through hole will become frequency disorder and distortion to affect the sound quality. Therefore, a planar sound outlet is usually reserved on the front surface of the large-diameter moving coil loudspeaker.

And the working principle of the micropore sounding loudspeaker front cavity in the embodiment of the application is as follows: on one hand, the shell is provided with a micro sound-emitting hole, which transmits the sound emitted by the loudspeaker through the micro sound-emitting hole, on the other hand, the sound energy conversion blocks and the sound energy conversion pads are arranged on the periphery of the through holes, so that sound waves which cannot be transmitted through the through holes in sound waves generated by vibration of the vibrating diaphragm are eliminated, particularly, through the porous structure, the sound energy conversion blocks and the countless small holes on the sound energy conversion pads, can provide a transmission air space for sound waves, gradually eliminates sound wave energy, provides damping for the sound waves by the rough surface of the small hole, generates heat when the sound waves are rubbed on the rough surface of the small hole when being transmitted in the small hole, that is, the energy of the sound wave (air wave) is converted into heat energy to be eliminated, and the redundant sound wave is eliminated, so that no reflection, refraction and standing wave occur, the sound waves emanating from the through-hole are not disturbed and thus are original fidelity. And install S-shaped sound wave damping circle on the front chamber installing port of micropore phonation speaker front chamber and speaker butt joint, can prevent that sound from leaking, to sum up, the sound that the speaker sent can be high-quality from this little shape phonation hole outgoing. The concrete propagation process of the sound wave is as follows: the sound wave of the loudspeaker passes through the sound energy conversion block and then passes through the sound energy conversion pad, a part of the sound wave is eliminated, and the rest sound wave is transmitted out through the micro sound-generating hole to generate sound.

In the embodiment, the loudspeaker is connected into a front cavity of the micropore sounding loudspeaker, the front cavity of the micropore sounding loudspeaker comprises a micro sound outlet hole formed in the end face of a shell, a damping ring arranged on a mounting port of the front cavity of the shell, and a sound energy conversion component which is fixed in the cavity of the shell and has a porous structure, the sound energy conversion component is provided with a through hole, the through hole is opposite to the micro sound outlet hole, after the front cavity of the micropore sounding loudspeaker is connected with the loudspeaker, sound waves emitted by the loudspeaker are emitted from the micro sound outlet hole, the rest sound waves are eliminated by the sound energy conversion component, the sound waves emitted from the micro sound outlet hole cannot be interfered, the sound wave propagation efficiency is enhanced, the damping ring prevents the sound waves from leaking, the sound wave propagation efficiency is further enhanced, high-quality sound quality can be emitted only by one small hole, the technology of the traditional loudspeaker for increasing the sound outlet hole area and improving the sound quality is, the occupied space of the sounding caliber of the loudspeaker on the device is saved, and the applicability of the loudspeaker in electronic products is improved.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

It is right above the utility model provides a micropore sound production speaker antechamber and micropore sound production speaker external member's description, to the technical personnel in this field, the foundation the utility model discloses the thought, all have the change part on concrete implementation and application scope, to sum up, this specification content should not be understood as right the utility model discloses a restriction.

Claims (10)

1. A micro-porous acoustic speaker front cavity, comprising:

the acoustic transducer comprises a shell, a micro sound outlet, a damping ring and an acoustic energy conversion assembly with a porous structure;

the shell is of a hollow structure and comprises an end face and a front cavity mounting opening, the micro sound outlet is formed in the end face of the shell, and the damping ring is arranged on the front cavity mounting opening;

the acoustic energy conversion assembly is fixed in the cavity of the shell, is fixed on the end face of the shell and is positioned between the micro sound outlet and the damping ring, and the acoustic energy conversion assembly is provided with a through hole which is opposite to the micro sound outlet.

2. The micro-porous acoustic speaker vestibule as recited in claim 1, wherein the acoustic energy conversion assembly comprises: the acoustic energy conversion pad is fixedly attached to one side, located on the inner cavity of the shell, of the end face of the shell;

the through hole is formed in the acoustic energy conversion pad.

3. A micro-porous acoustic speaker vestibule as recited in claim 2, wherein the acoustic energy conversion pad is circular and the aperture opens into the center of the acoustic energy conversion pad.

4. The front chamber of a microporous sound-producing speaker as claimed in claim 3, wherein the housing is hollow and cylindrical, the end surface is circular, and the micro sound outlet is opened at the center of the end surface.

5. The micro-porous acoustic speaker vestibule chamber of claim 4 wherein the acoustic energy conversion assembly further comprises: a plurality of acoustic energy conversion blocks;

the acoustic energy conversion blocks are arranged at preset intervals, are uniformly fixed on the acoustic energy conversion pad and do not shield the through holes.

6. The micro-porous acoustic speaker vestibule chamber of claim 5 wherein the acoustic energy conversion block is in the shape of a trapezoidal fillet.

7. A microporous sound-emitting loudspeaker front cavity according to any of claims 1-6, characterised in that the damping ring is embodied as an S-shaped acoustic wave damping ring.

8. The micro-porous acoustic speaker front-chamber of claim 7, wherein a front-chamber positioning step is provided at the front-chamber mounting opening;

the front cavity positioning step is in butt joint with the loudspeaker and used for limiting the depth of the loudspeaker connected into the front cavity of the micropore sounding loudspeaker.

9. The front cavity of a microporous sound-producing speaker according to claim 8, wherein the diameter of the micro sound-producing hole is 1-1.5 mm.

10. A microporous sound producing speaker kit, comprising: a loudspeaker and a microporous sound producing loudspeaker front volume as claimed in any one of claims 1 to 9;

the loudspeaker is arranged on the front cavity mounting opening of the front cavity of the micropore sounding loudspeaker.

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