CN214901297U

CN214901297U - Sound production module

Info

Publication number: CN214901297U
Application number: CN202121474958.6U
Authority: CN
Inventors: 王景伟; 陈国强; 董兆磊
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-11-26
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses a sounding module, which comprises a shell, a sounding monomer and a separator, wherein the sounding monomer is positioned inside the shell; the barrier member is established for the cover sound production monomer is last, and adopt the rigidity piece of thermoplasticity high temperature resistant material, the barrier member includes the connecting plate, follows connecting plate circumference encircleed curb plate and certainly the outside shirt rim that extends of curb plate, the shirt rim with it is sealed through sealed glue between the shell, the barrier member with it has sound absorbing material to fill between the shell. Because the isolation piece is made of thermoplastic high-temperature-resistant material, the rigidity is large, the deformation amount is small, and the plasticity is high, so that the angle of the side wall of the isolation piece is stable; the skirt edge of the isolating piece is sealed with the shell through the sealant, and the skirt edge is high in rigidity and can be stably fixed with the shell, so that the isolating effect of the isolating piece is improved, and the sound absorbing material is prevented from leaking.

Description

Sound production module

Technical Field

The utility model relates to an electroacoustic conversion technology field, in particular to sound production module.

Background

In order to match with the slim design of electronic equipment, the size of a speaker module in the electronic equipment is getting smaller and smaller. Need fill sound absorbing material in the back chamber of speaker module to need set up isolation structure and keep apart sound absorbing material and sound production monomer, generally adopt the screen cloth as isolation structure at present, the screen cloth deformation volume is big, easily place not in place, and poor stability, and the leakproofness between screen cloth and the shell is not good, leads to sound absorbing material to spill, influences the acoustic performance of speaker module.

Therefore, there is a need to provide a novel sound module to solve the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sound production module, aim at solving and be used for keeping apart that sound absorbing material and the free screen cloth deformation volume of sound production are big, poor stability, the not good technical problem of leakproofness between shell and the screen cloth.

In order to achieve the above object, the utility model provides a sound production module, sound production module includes:

a housing;

the sounding unit is positioned inside the shell;

the barrier member, the barrier member is established for the cover sound production monomer is last, and adopt the rigidity piece of the high temperature resistant material of thermoplasticity, the barrier member includes the connecting plate, follows connecting plate circumference encircleed curb plate and certainly the outside shirt rim that extends of curb plate, the shirt rim with it is sealed through sealed glue between the shell, the barrier member with it has sound absorbing material to fill between the shell.

Optionally, the thermoplastic high temperature resistant material is polycarbonate.

Optionally, the sound production monomer includes relative first terminal surface and the second terminal surface that sets up and connects first terminal surface with the side wall of second terminal surface, the free vibrating diaphragm setting of sound production is in first terminal surface, the connecting plate with the second terminal surface butt or have the clearance, the curb plate with butt or have the clearance between the side wall.

Optionally, a plurality of vent holes are arranged on the connecting plate and the side plate.

Optionally, the thickness of the partition is 0.05-0.2 cm, and the diameter of the vent hole is smaller than 0.2 cm.

Optionally, the connecting plate and the side plate are in arc transition connection.

Optionally, the side plate includes a plurality of connected side walls, and any two adjacent side walls are in arc transition connection.

Optionally, the free vibrating diaphragm of sound production with form the sound production antechamber between the shell, the shell is seted up the intercommunication the phonation hole of sound production antechamber.

Optionally, the volume of the sound-emitting front cavity gradually increases in a direction parallel to the plane of the diaphragm toward the sound outlet.

Optionally, the spacer is an integrally formed piece.

The utility model discloses in, the sound production monomer is located the inside of shell, the separator cover is established on the sound production monomer, sound absorbing material fills between separator and shell, the separator can block sound absorbing material and get into in the sound production monomer, and the separator adopts the high temperature resistant material of thermoplasticity, rigidity is big, the deformation volume is little, plasticity is high, make the angle of lateral wall stable, the separator includes the connecting plate, curb plate that encircles along connecting plate circumference and the shirt rim of outside extension from the curb plate, it is sealed through sealed glue between shirt rim and the shell, because the rigidity of shirt rim is big, can be firmly fixed with the shell, the isolation effect of separator has been improved, sound absorbing material has been avoided spilling.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of a disassembled structure of a sounding unit and a spacer according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a sound module according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of the sound module shown in fig. 2 along the line a-a.

Examples reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a sound production module.

Referring to fig. 1-3, the utility model discloses sound production module 100 that technical scheme provided includes shell 110, sound production monomer 120 and separator 130, sound production monomer 120 is located shell 110's inside, separator 130 is established on sound production monomer 120 for the cover, and adopts the rigidity piece of the high temperature resistant material of thermoplasticity, separator 130 includes connecting plate 131, along connecting plate 131 circumference encircleed curb plate 132 and from the outside shirt rim 133 that extends of curb plate 132, it is sealed through sealed glue between shirt rim 133 and the shell 110, it has sound absorbing material to fill between separator 130 and the shell 110.

The sound generating unit 120 includes a vibration system and a magnetic circuit system with a magnetic gap, the vibration system includes a diaphragm 121 and a voice coil (not shown) for supporting the diaphragm 121 to vibrate, the voice coil is electrically connected to an external circuit, and when the voice coil is powered on, the voice coil vibrates under the influence of a magnetic field generated by the magnetic circuit system, so as to drive the diaphragm 121 to generate sound by vibration. Through coating sealed glue between shirt rim 133 and shell 110, realize the isolation between sound production monomer 120 and the sound absorbing material, spacer 130 can match with sound production monomer 120's appearance, establish spacer 130 cover on sound production monomer 120 during the installation, wrap up it, can realize sound absorbing material's filling, because spacer 130 adopts the high temperature resistant material of thermoplasticity, accessible hot pressing preforming, rigidity is big, the deformation volume is little, the plasticity is high, the shaping angle is stable, reliable die head angle guarantees, the resilience is little, and the width of shirt rim 133 is stable, the direct blanking of available mould sword, the equipment is simple, the dismouting of being convenient for, need not to worry that spacer 130 leaks in the use and takes place to warp, sound absorbing material can not get into sound production monomer 120, the acoustic performance of taking place the module has been improved. The spacers 130 are preferably integrally formed, the manufacturing process is simple, and the integrally formed spacers 130 are convenient to assemble and disassemble.

The thermoplastic high-temperature resistant material is preferably polycarbonate, the polycarbonate is tough thermoplastic resin, has high strength, good fatigue resistance, stable size and high temperature resistance, the prepared isolating piece 130 can be stably connected with the shell 110 to completely isolate the sound absorbing material from the sound generating monomer 120, and the polycarbonate is cheap and easy to obtain, so that the production cost is reduced. Of course, in other embodiments, the spacer 130 may be made of a thermoplastic high temperature resistant material such as polyurethane, polyetheretherketone, polyethersulfone, polyphenylene sulfide, etc.

The sound generating unit 120 includes a first end surface 122 and a second end surface 123 which are oppositely arranged, and a side wall 124 which connects the first end surface 122 and the second end surface 123, the diaphragm 121 of the sound generating unit 120 is arranged on the first end surface 122, the connecting plate 131 abuts against the second end surface 123 or has a gap, and the side plate 132 abuts against the side wall 124 or has a gap. The connecting plate 131 of the spacer 130 is matched with the first end face 122 in shape so as to be attached to the surface of the first end face 122, and a gap may also be left between the connecting plate 131 of the spacer 130 and the first end face 122 of the sound generating unit 120; the side plate 132 of the isolation member 130 may also be configured to match the shape of the side wall 124 of the sound-emitting unit 120, so as to be attached to the outer side of the side wall 124, and a gap may also be left between the side plate 132 of the isolation member 130 and the side wall 124 of the sound-emitting unit 120, as long as the skirt 133 can be stably set on the housing 110, so as to ensure the sealing property between the isolation member 130 and the housing 110, and the isolation member 130 does not affect the vibration of the diaphragm 121.

In an embodiment, the casing 110 includes a first casing 111 and a second casing 112, the first casing 111 and the second casing 112 are spliced to each other to form a receiving cavity for receiving the sound generating unit 120, the second casing 112 is formed with a first step 115 and a second step 116, an edge of a diaphragm 121 of the sound generating unit 120 is overlapped on the first step 115, a skirt 133 of the spacer 130 is overlapped on the second step 116, the second step 116 is close to the first casing 111 relative to the first step 115, and a side plate 132 of the spacer 130 is disposed corresponding to a part of a side wall 124 of the sound generating unit 120. The edge of the first housing 111 is formed with a third step 117, and the edge of the second housing 112 is overlapped on the third step 117 to seal the first housing 111 and the second housing 112. The structure is simple, so that the assembly and disassembly of the generating module are more convenient.

All be equipped with a plurality of air vents 134 on connecting plate 131 and the curb plate 132, the inside atmospheric pressure of sound production monomer 120 can be avoided too big in the setting of air vent 134, and sound absorbing material is for inhaling the sound granule, inhales the particle diameter of sound granule and is greater than the aperture of air vent 134 to prevent to inhale the sound granule and get into in the sound production monomer 120.

Specifically, the thickness of the spacer 130 is 0.05-0.2 cm, and the diameter of the vent 134 is less than 0.2 cm. The spacer 130 is a relatively thin plate-shaped structure, and the shape of the spacer is adapted to the sounding unit 120, so that the spacer does not occupy the internal space of the sounding unit 120; and the rigidity of the isolation member 130 is high, the structure temperature is high, the isolation member cannot deform in a sound mode, and optionally, the connecting plate 131 and the side plate 132 are connected in a circular arc transition mode. The vent holes 134 are uniformly arranged on the partition 130, so that the airflow in the sounding unit 120 is smooth, and the acoustic performance of the sounding module 100 is ensured; and the vent holes 134 on the partition 130 have a small diameter, the sound-absorbing material does not enter the sound-emitting unit 120 through the vent holes 134.

More specifically, as shown in fig. 1, the connecting plate 131 and the side plate 132 are in arc transition connection, the side plate 132 includes a plurality of connected side walls, and any two adjacent side walls are in arc transition connection.

Optionally, a sound-generating front cavity 118 is formed between the diaphragm 121 of the sound-generating unit 120 and the casing 110, the casing 110 is opened with a sound outlet 119 communicating with the sound-generating front cavity 118, and sound generated by vibration of the diaphragm 121 is transmitted from the sound outlet 119 through the sound-generating front cavity 118. The sound-generating front cavity 118 and the birth hole are both formed in the second housing 112, the second housing 112 includes a bottom plate 113 and a side portion 114, the diaphragm 121 of the sound-generating unit 120 is disposed opposite to the bottom plate 113, the sound-generating front cavity 118 is located between the diaphragm 121 and the bottom plate 113, the first step 115 and the second step 116 are formed in the side portion 114 of the second housing 112, the sound outlet hole 119 is located at one end of the side portion 114, and the sound outlet hole 119 may be a raceway-type through hole. Further, one end of the side portion 114 protrudes outward to form a protrusion 1121, the sound outlet hole 119 is formed on the protrusion 1121, and the protrusion 1121 forms an airflow channel 1122 communicating with the sound outlet hole 119, so that the volume of the sound-emitting front cavity 118 is increased.

As shown in fig. 3, the volume of the sound-generating front cavity 118 gradually increases in a direction parallel to the plane of the diaphragm 121 toward the sound-generating hole 119, that is, the sound-generating front cavity 118 is in a bell-mouthed design, and the diameter gradually increases toward the sound-generating hole 119, so as to amplify sound, and thus the small-volume sound-generating unit 120 can achieve an effect even exceeding the relatively large-volume sound-generating unit 120. Wherein, the design of the horn-shaped sound production front cavity 118 can be realized by obliquely arranging the sound production monomer 120 relative to the bottom plate 113 of the second shell 112, as shown in the figure, one end of the sound production monomer 120, which is far away from the sound outlet 119, is close to the bottom plate 113 relatively close to the end of the sound outlet 119, so as to form the horn-shaped sound production front cavity 118.

The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.

Claims

1. The utility model provides a sound production module, its characterized in that, sound production module includes:

a housing;

the sounding unit is positioned inside the shell;

2. The sound generation module of claim 1, wherein the thermoplastic high temperature resistant material is polycarbonate.

3. The sound generating module of claim 1, wherein the sound generating unit comprises a first end surface and a second end surface which are oppositely arranged, and a side wall which connects the first end surface and the second end surface, the diaphragm of the sound generating unit is arranged on the first end surface, the connecting plate is abutted against the second end surface or has a gap, and the side plate is abutted against the side wall or has a gap.

4. The sound generation module of claim 1, wherein a plurality of vent holes are provided in each of the connecting plate and the side plate.

5. The acoustic module of claim 4, wherein the thickness of the spacer is 0.05-0.2 cm, and the diameter of the vent is less than 0.2 cm.

6. The sound production module of any one of claims 1-5, wherein the connecting plate and the side plate are connected by a circular transition.

7. The sound production module of any one of claims 1-5, wherein the side plate comprises a plurality of connected side walls, and any two adjacent side walls are connected by a circular transition.

8. The sound production module of any one of claims 1 to 5, wherein a sound production front cavity is formed between the diaphragm of the sound production unit and the housing, and the housing is provided with a sound outlet communicated with the sound production front cavity.

9. The acoustic module of claim 8, wherein the volume of the acoustic front cavity increases in a direction parallel to the plane of the diaphragm toward the acoustic hole.

10. The sound generation module of any one of claims 1-5, wherein the spacer is an integrally formed piece.