CN217825219U

CN217825219U - Micro speaker module

Info

Publication number: CN217825219U
Application number: CN202221037363.9U
Authority: CN
Inventors: 林嘉平; 董庆宾
Original assignee: Weishi Technology Co ltd
Current assignee: Weishi Technology Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-11-15
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a micro loudspeaker module, which comprises an upper shell and a loudspeaker monomer, wherein the upper shell is provided with a mounting groove, the loudspeaker monomer comprises a basin frame and a vibration system arranged on the basin frame, and the vibration system comprises a vibration diaphragm; a limiting waistcoat for abutting against the vibrating diaphragm is arranged at the bottom of the mounting groove, so that a front sound cavity is formed between the vibrating diaphragm and the bottom surface of the mounting groove; and a sealing part is arranged on the contact surface of the vibrating diaphragm and the upper shell, and the sealing part is arranged around the front sound cavity. The miniature loudspeaker module is simple in structure and convenient to process and assemble. Through set up the sealing around preceding sound chamber between vibrating diaphragm and epitheca for behind speaker monomer and the epitheca interference fit, the sealing receives the extrusion, thereby forms bounce-back force to speaker monomer and epitheca, seals the installation gap between speaker monomer and the epitheca, prevents further that water from permeating inside miniature speaker module from the clearance between vibrating diaphragm and the epitheca.

Description

Micro speaker module

Technical Field

The utility model relates to an electric energy sound converter technical field especially relates to miniature speaker module.

Background

In the process of rapid development of portable devices such as mobile phones, people have increasingly strong requirements on the functionality of products. For the loudspeaker module, not only is the acoustic performance of the loudspeaker module required to be good, but also the loudspeaker module is required to have stronger waterproof performance. The speaker module generally includes an upper housing, a lower housing assembled with the upper housing to form an accommodating space, and a speaker unit accommodated in the accommodating space, where the speaker unit and the upper housing enclose a front acoustic cavity, and the speaker unit, the lower housing and the upper housing together enclose a rear cavity. The prior art is fixed at the assembly face rubber coating of speaker monomer and casing often, realizes sealed waterproof simultaneously, nevertheless because beat the instability of gluey technology and glue layer and contact with water for a long time, leads to glue layer inefficacy easily, and the speaker module loses waterproof nature and the damage of intaking.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that: a micro speaker module with a novel structure and high waterproof performance is provided.

In order to solve the technical problem, the utility model discloses a technical scheme be: the miniature loudspeaker module comprises an upper shell and a loudspeaker single body, wherein the upper shell is provided with a mounting groove, the loudspeaker single body comprises a basin frame and a vibration system arranged on the basin frame, and the vibration system comprises a vibrating diaphragm; a limiting waistcoat for abutting against the vibrating diaphragm is arranged at the bottom of the mounting groove, so that a front sound cavity is formed between the vibrating diaphragm and the bottom surface of the mounting groove; and a sealing part is arranged on the contact surface of the vibrating diaphragm and the upper shell, and the sealing part surrounds the front sound cavity.

Further, the cross section of the sealing part is rectangular, trapezoidal, circular arc or triangular.

Further, the number of the sealing parts is several.

Further, the upper case is provided with a receiving groove for receiving at least a partial region of the sealing portion.

Furthermore, the vibrating diaphragm comprises an inner fixing part, a ring folding area and an outer fixing part which are sequentially connected from inside to outside, and the outer fixing part abuts against the limiting waistcoat; the sealing part is arranged on the outer fixing part.

Further, at least one side edge of the sealing part is arranged in a collinear way with the inner edge or the outer edge of the outer fixing part.

Furthermore, the edge of the vibrating diaphragm bends and extends towards the direction far away from the front sound cavity to form an annular edge, and the annular edge is hermetically combined with the outer side surface of the basin frame.

Furthermore, the annular edge is hermetically combined with the inner side surface of the upper shell, and the sealing part is arranged on the annular edge.

Furthermore, at least one sealing part is arranged at one end of the annular edge close to the vibrating diaphragm.

Furthermore, at least one sealing part is arranged at one end of the annular edge far away from the vibrating diaphragm.

The beneficial effects of the utility model reside in that: this miniature speaker module simple structure, the processing assembly of being convenient for. Through set up the sealing around preceding sound chamber between vibrating diaphragm and epitheca for behind speaker monomer and the epitheca interference fit, the sealing receives the extrusion, thereby seals the installation gap between speaker monomer and the epitheca, and inside further preventing that water from permeating to miniature speaker module from the clearance between vibrating diaphragm and the epitheca.

Drawings

Fig. 1 is an exploded view of a portion of a micro speaker module according to a first embodiment of the present invention;

fig. 2 is a cross-sectional view of a speaker unit in a micro speaker module according to a first embodiment of the present invention;

FIG. 3 is an enlarged detail view of portion A of FIG. 2;

fig. 4 is a cross-sectional view of a micro speaker module according to a second embodiment of the present invention;

FIG. 5 is an enlarged detail view of portion B of FIG. 4;

fig. 6 is a schematic view of a part of a speaker unit in a micro speaker module according to a third embodiment of the present invention;

fig. 7 is a schematic view of a part of a speaker unit in a micro speaker module according to a fourth embodiment of the present invention;

fig. 8 is a schematic view of a part of a speaker unit in a micro speaker module according to a fifth embodiment of the present invention;

fig. 9 is a schematic view of a part of a speaker unit in a micro speaker module according to a sixth embodiment of the present invention;

fig. 10 is a schematic view of a part of a speaker unit in a micro speaker module according to a seventh embodiment of the present invention;

fig. 11 is a schematic view of a part of a speaker unit in a micro speaker module according to an eighth embodiment of the present invention;

fig. 12 is a schematic view of a part of a speaker unit in a micro speaker module according to the ninth embodiment of the present invention;

fig. 13 is a schematic view of a part of a speaker unit in a micro speaker module according to the tenth embodiment of the present invention;

fig. 14 is a schematic partial structural view of a speaker unit in a micro speaker module according to an eleventh embodiment of the present invention;

fig. 15 is a schematic view of a part of a speaker unit in a micro speaker module according to a twelfth embodiment of the present invention.

Description of the reference symbols:

1. an upper shell; 11. mounting grooves; 12. limiting waistcoats;

2. a speaker unit; 21. a basin stand; 22. vibrating diaphragm; 221. a loop folding region; 222. an outer fixing portion; 223. a ring edge;

3. a sealing part;

4. and (6) accommodating the tank.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 15, the micro speaker module includes an upper case 1 and a speaker unit 2, the upper case 1 is provided with an installation groove 11, the speaker unit 2 includes a frame 21 and a vibration system disposed on the frame 21, and the vibration system includes a vibrating diaphragm 22; the bottom of the mounting groove 11 is provided with a limiting waistcoat 12 for abutting against the vibrating diaphragm 22, so that a front sound cavity is formed between the vibrating diaphragm 22 and the bottom surface of the mounting groove 11; a sealing part 3 is arranged on the contact surface of the diaphragm 22 and the upper shell 1, and the sealing part 3 is arranged around the front acoustic cavity.

From the above description, the beneficial effects of the present invention are: the miniature loudspeaker module is simple in structure and convenient to process and assemble. Through set up the sealing 3 around preceding sound chamber between vibrating diaphragm 22 and epitheca 1 for behind speaker monomer 2 and the interference fit of epitheca 1, sealing 3 receives the extrusion, thereby seals the installation gap between speaker monomer 2 and the epitheca 1, further prevents that water from permeating inside the miniature speaker module from the clearance between vibrating diaphragm 22 and the epitheca 1.

Further, the cross section of the sealing part 3 is rectangular, trapezoidal, circular arc or triangular.

As can be seen from the above description, the shape of the sealing portion 3 can be selected according to the use requirements or the design requirements.

Further, the number of the sealing parts 3 is several.

As can be seen from the above description, the provision of the plurality of sealing portions 3 can further enhance the sealing and waterproof effects of the micro-speaker module.

Further, the upper shell 1 is provided with a receiving groove 4 for receiving at least a partial area of the sealing portion 3.

As is apparent from the above description, the accommodation groove 4 can be used to position the sealing part 3 at the time of mounting while preventing the thickness of the sealing part 3 from being excessively large to adversely affect the assembling accuracy between the speaker unit 2 and the upper case 1.

Further, the diaphragm 22 includes an inner fixing portion, a ring-folded region 221 and an outer fixing portion 222 which are sequentially connected from inside to outside, and the outer fixing portion 222 abuts against the limiting waistcoat 12; the sealing portion 3 is provided on the outer fixing portion 222.

Further, at least one side of the sealing portion 3 is arranged in line with the inner edge or the outer edge of the outer fixing portion 222.

Further, the edge of the diaphragm 22 bends and extends in a direction away from the front acoustic cavity to form an annular edge 223, and the annular edge 223 is in sealing combination with the outer side surface of the frame 21.

As can be seen from the above description, the provision of the annular edge 223 at the edge of the diaphragm 22 can effectively enhance the sealing performance of the speaker unit 2, and prevent water from penetrating into the speaker unit 2 from the mounting gap between the diaphragm 22 and the frame 21.

Further, the annular edge 223 is hermetically combined with the inner side surface of the upper shell 1, and the sealing portion 3 is disposed on the annular edge 223.

Further, at least one sealing portion 3 is disposed at one end of the annular edge 223 close to the diaphragm 22.

Further, at least one sealing portion 3 is disposed at an end of the annular edge 223 away from the diaphragm 22.

Example one

Referring to fig. 1 to fig. 3, a first embodiment of the present invention is: the miniature loudspeaker module can be widely applied to portable electronic equipment such as mobile phones, notebook computers, hearing aids and intelligent watches to be used as an audio playing component.

The micro loudspeaker module comprises an upper shell 1 and a loudspeaker single body 2, wherein the upper shell 1 is provided with an installation groove 11, the loudspeaker single body 2 comprises a basin frame 21 and a vibration system arranged on the basin frame 21, and the vibration system comprises a vibrating diaphragm 22; the bottom of the mounting groove 11 is provided with a limiting waistcoat 12 for abutting against the vibrating diaphragm 22, so that a front sound cavity is formed between the vibrating diaphragm 22 and the bottom surface of the mounting groove 11; and a sealing part 3 is arranged on the contact surface of the diaphragm 22 and the upper shell 1, and the sealing part 3 is arranged around the front sound cavity. The diaphragm 22 comprises an inner fixing part, a ring-folded area 221 and an outer fixing part 222 which are sequentially connected from inside to outside, and the outer fixing part 222 abuts against the limiting waistcoat 12; the sealing portion 3 is provided on the outer fixing portion 222.

Specifically, the micro speaker module further comprises a lower shell and a flexible circuit board, wherein the lower shell is combined with the upper shell 1 to seal the bottom opening of the mounting groove 11; the loudspeaker single body 2, the lower shell and the upper shell 1 enclose a rear sound cavity together. The lower case can be designed as a single part, or when the micro speaker module is installed in a thin device such as a mobile phone, the housing of the device such as the mobile phone can be used in cooperation with the upper case 1 as the lower case of the micro speaker module. One end of the flexible circuit board is connected with the speaker unit 2, and the other end extends out of the mounting groove 11, so that the speaker unit 2 is conducted with an external circuit. A sound outlet channel communicated with the front sound cavity and the outside is further arranged in the mounting groove 11. In this embodiment, one sealing portion 3 is provided, and the sealing portion 3 is formed by the diaphragm 22 protruding to one side. Because the material of the diaphragm 22 has certain elasticity, compared with the sealing part 3 which is produced independently, the sealing part 3 which is directly projected on the diaphragm 22 can reduce part of production processes and assembly processes, and is more favorable for ensuring the dimensional accuracy and the assembly accuracy of the sealing part 3. In other embodiments, the sealing portion 3 may be made of plastic, rubber or silicone, and is fixedly connected to the diaphragm 22.

As shown in fig. 3, the cross section of the sealing portion 3 has a rectangular, trapezoidal, circular arc or triangular shape. Specifically, in the present embodiment, the cross section of the sealing portion 3 is rectangular.

Example two

Referring to fig. 4 and 5, the second embodiment of the present invention is a further improvement of the sealing portion 3 on the basis of the first embodiment, and the difference from the first embodiment is that: the sealing part 3 is arranged on the limiting waistcoat 12. Specifically, the sealing portion 3 is formed by a limiting waistcoat 12 protruding to a side close to the diaphragm 22. In other embodiments, the sealing portion 3 may be made of plastic, rubber or silicone, and the sealing portion 3 is adhesively connected to the limiting waistcoat 12 of the upper shell 1, or the sealing portion 3 and the upper shell 1 are integrally formed by a two-color injection molding process.

EXAMPLE III

Referring to fig. 6, a third embodiment of the present invention is a further improvement of the sealing portion 3 on the basis of the first embodiment, and is different from the first embodiment in that: at least one side of the sealing portion 3 is arranged in line with the inner edge of the outer fixing portion 222.

Example four

Referring to fig. 7, a fourth embodiment of the present invention is a further improvement of the sealing portion 3 on the basis of the first embodiment, and is different from the first embodiment in that: at least one side of the sealing part 3 is arranged in line with the outer edge of the outer fixing part 222. In this embodiment, one sealing portion 3 is provided.

EXAMPLE five

Referring to fig. 8, a fifth embodiment of the present invention is a further improvement of the upper case 1 on the basis of the fourth embodiment, and is different from the fourth embodiment in that: the upper shell 1 is provided with a receiving groove 4 for receiving at least a partial area of the seal 3. Specifically, the shape of the receiving groove 4 is adapted to the shape of the sealing portion 3, and in the present embodiment, the cross section of the receiving groove 4 is set to be rectangular corresponding to the cross section of the sealing portion 3. In other embodiments, the cross section of the sealing portion 3 can be trapezoidal, circular arc or triangular, and the shape of the receiving groove 4 is modified correspondingly to the sealing portion 3.

Example six

Referring to fig. 9, a sixth embodiment of the present invention is a further improvement of the sealing portion 3 on the basis of the fourth embodiment, and is different from the fourth embodiment in that: the cross section of the sealing part 3 is in a circular arc shape.

EXAMPLE seven

Referring to fig. 10, a seventh embodiment of the present invention is a further improvement of the sealing portion 3 on the basis of the fourth embodiment, and is different from the fourth embodiment in that: the quantity of sealing 3 is a plurality of, a plurality of sealing 3 sets up from inside to outside lantern ring in proper order. Specifically, in this embodiment, the number of the sealing portions 3 is two, two sealing portions 3 are disposed on the outer fixing portion 222 of the diaphragm 22, and a side edge of one of the sealing portions 3 and an outer edge of the outer fixing portion 222 are arranged in a collinear manner. In other embodiments, the sealing portion 3 may be provided with one, three, or more.

Example eight

Referring to fig. 11, an eighth embodiment of the present invention is a further improvement of the diaphragm 22 on the basis of the first embodiment, and the difference from the first embodiment is that: the edge of the diaphragm 22 bends and extends towards the direction away from the front sound cavity to form an annular edge 223, and the annular edge 223 is in sealing combination with the outer side surface of the basin frame 21. The annular edge 223 is in sealing combination with the inner side surface of the upper shell 1, and the sealing part 3 is arranged on the annular edge 223. Specifically, the frame 21 is rectangular, and the annular edge 223 is rectangular and annular corresponding to the frame 21. In this embodiment, one sealing portion 3 is provided, and the cross section is rectangular.

Example nine

Referring to fig. 12, a ninth embodiment of the present invention is a further improvement of the sealing portion 3 on the basis of the eighth embodiment, and is different from the eighth embodiment in that: the cross section of the sealing part 3 is arc-shaped.

Example ten

Referring to fig. 13, a tenth embodiment of the present invention is a further improvement of the sealing portion 3 on the basis of the eighth embodiment, and is different from the eighth embodiment in that: at least one of the sealing portions 3 is disposed at an end of the annular edge 223 adjacent to the diaphragm 22. Specifically, the bottom surface of the sealing portion 3 and a surface of the diaphragm 22 away from the frame 21 are disposed in a coplanar manner.

EXAMPLE eleven

Referring to fig. 14, an eleventh embodiment of the present invention is a further improvement of the sealing portion 3 on the basis of the tenth embodiment, and is different from the tenth embodiment in that: the number of the sealing parts 3 is several. Specifically, in the present embodiment, the number of the seal portions 3 is two. In other embodiments, the sealing portion 3 may be provided with one, three, or more.

EXAMPLE twelve

Referring to fig. 15, a twelfth embodiment of the present invention is a further improvement of the sealing portion 3 on the basis of the eighth embodiment, and is different from the eighth embodiment in that: at least one of the sealing portions 3 is disposed at an end of the annular edge 223 away from the diaphragm 22. Specifically, the top surface of the sealing portion 3 and the side of the annular edge 223 away from the diaphragm 22 are disposed in a coplanar manner.

To sum up, the utility model provides a this miniature speaker module simple structure, the processing assembly of being convenient for. Through set up the sealing around preceding sound chamber between vibrating diaphragm and epitheca for behind speaker monomer and the epitheca interference fit, the sealing receives the extrusion, thereby seals the installation gap between speaker monomer and the epitheca, prevents further that water from permeating inside miniature speaker module from the clearance between vibrating diaphragm and the last. The accommodation groove can be used for positioning the sealing part when being installed, and simultaneously prevents the thickness of the sealing part from being too large to cause adverse effects on the assembling precision between the speaker monomer and the upper shell. The edge of the vibrating diaphragm is provided with the annular edge, so that the sealing performance of the loudspeaker monomer can be effectively enhanced, and water is prevented from permeating into the loudspeaker monomer from the mounting gap between the vibrating diaphragm and the basin frame.

The above mentioned is only the embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The miniature loudspeaker module comprises an upper shell and a loudspeaker single body, wherein the upper shell is provided with an installation groove, the loudspeaker single body comprises a basin frame and a vibration system arranged on the basin frame, and the vibration system comprises a vibrating diaphragm; a limiting waistcoat for abutting against the vibrating diaphragm is arranged at the bottom of the mounting groove, so that a front sound cavity is formed between the vibrating diaphragm and the bottom surface of the mounting groove; the method is characterized in that: and a sealing part is arranged on the contact surface of the vibrating diaphragm and the upper shell, and the sealing part surrounds the front sound cavity.

2. The micro-speaker module of claim 1, wherein: the cross section of the sealing part is rectangular, trapezoidal, circular arc or triangular.

3. The micro-speaker module of claim 2, wherein: the number of the sealing parts is several.

4. The micro-speaker module of claim 3, wherein: the upper shell is provided with a receiving groove for receiving at least a partial area of the sealing part.

5. The micro-speaker module of claim 3, wherein: the vibrating diaphragm comprises an inner fixing part, a ring bending area and an outer fixing part which are sequentially connected from inside to outside, and the outer fixing part abuts against the limiting waistcoat; the sealing part is arranged on the outer fixing part.

6. The micro-speaker module of claim 5, wherein: at least one side edge of the sealing part is arranged in a collinear way with the inner edge or the outer edge of the outer fixing part.

7. The micro-speaker module of claim 3, wherein: the edge of the vibrating diaphragm bends and extends towards the direction far away from the front sound cavity to form an annular edge, and the annular edge is hermetically combined with the outer side face of the basin frame.

8. The micro-speaker module as recited in claim 7, wherein: the annular edge is in sealing combination with the inner side face of the upper shell, and the sealing part is arranged on the annular edge.

9. The micro-speaker module as recited in claim 8, wherein: at least one sealing part is arranged at one end of the annular edge close to the vibrating diaphragm.

10. The micro-speaker module of claim 8, wherein: at least one sealing part is arranged at one end of the annular edge far away from the vibrating diaphragm.