CN214756796U - Speaker module and electronic equipment - Google Patents

Speaker module and electronic equipment Download PDF

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Publication number
CN214756796U
CN214756796U CN202121461982.6U CN202121461982U CN214756796U CN 214756796 U CN214756796 U CN 214756796U CN 202121461982 U CN202121461982 U CN 202121461982U CN 214756796 U CN214756796 U CN 214756796U
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China
Prior art keywords
housing
support ring
speaker module
sound
shell
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Active
Application number
CN202121461982.6U
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Chinese (zh)
Inventor
颜廷帅
谭飞
王景伟
陈国强
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Goertek Inc
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Goertek Inc
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Priority to CN202121461982.6U priority Critical patent/CN214756796U/en
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Abstract

The utility model discloses a speaker module and electronic equipment who uses this speaker module. The loudspeaker module comprises a shell, a sounding single body and a mesh assembly, wherein the shell comprises a first shell and a second shell; the first shell and the second shell are both metal pieces, and the second shell is covered on the first shell to limit an installation space; the sounding monomer is arranged in the installation space and divides the installation space into a front sound cavity and a rear sound cavity; the mesh assembly is arranged in the rear sound cavity and divides the rear sound cavity into filling cavities, and sound-absorbing particles are filled in the filling cavities; the screen cloth subassembly includes support ring and screen cloth, and the periphery of screen cloth is fixed in the support ring, and the support ring supports in the sound production monomer, and the support ring is the metalwork. The technical scheme of the utility model can promote the acoustic performance of speaker module.

Description

Speaker module and electronic equipment
Technical Field
The utility model relates to an acoustics technical field, in particular to speaker module and electronic equipment who uses this speaker module.
Background
Along with the development of science and technology, people require more and more high to electronic equipment's tone quality, and the speaker module among the electronic equipment receives electronic equipment outward appearance structure's influence, and its volume is also littleer and more.
In the correlation technique, the shell of speaker module is mostly the injection molding, and upper and lower shell mostly all adopts ultrasonic bonding's mode to seal, but receives the restriction of the condition of moulding plastics, and supersound lateral wall and casing must possess certain thickness in order to satisfy the technology processing procedure needs, under the condition that does not change the appearance volume, this kind of mode of moulding plastics can occupy more preceding back cavity volume, leads to the acoustic performance to be restricted.
In addition, the mesh subassembly that has the screen cloth subassembly that is used for sound chamber behind the speaker module, what the universal adoption was that the working of plastics of PET material do the support to realize the fixed of screen cloth. However, the shape tolerance of the mesh assembly in such a way is generally +/-0.1 mm; and, because the working of plastics of PET material is softer, the deformation is great, and receives the appearance restriction of guest end, often the rubber coating is limited, and is difficult for sealing, inhales the sound granule and easily enters into sound production monomer one side through its peripheral gap, influences acoustic properties.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a speaker module and applied this speaker module's electronic equipment, aim at promoting the acoustic performance of speaker module.
In order to achieve the above object, the utility model provides a speaker module, this speaker module includes:
a housing comprising a first shell and a second shell; the first shell and the second shell are both metal pieces, and the second shell is covered on the first shell to limit an installation space;
the sounding single body is arranged in the installation space and divides the installation space into a front sound cavity and a rear sound cavity; and
the mesh assembly is arranged in the rear sound cavity and divides the rear sound cavity into filling cavities, and sound absorption particles are filled in the filling cavities; the screen cloth subassembly includes support ring and screen cloth, the periphery of screen cloth is fixed in the support ring, the support ring support in the sound production monomer, the support ring is the metalwork.
In an embodiment of the present invention, the first casing and the second casing are welded in alignment, the housing further includes a first sealing member, the first sealing member is disposed around a periphery of the joint position of the first casing and the second casing to hermetically connect the first casing and the second casing.
The utility model discloses an in the embodiment, the periphery of second casing with the cooperation of the internal perisporium of first casing is injectd and is held gluey groove, it is filled with sealed glue to hold gluey inslot, sealed glue solidifies in order to form first sealing member.
The utility model discloses an in the embodiment, the sound production monomer has and is close to the installation face of second casing, the periphery of installation face sinks the setting to form annular constant head tank, the support ring accept in the constant head tank.
In an embodiment of the present invention, the mesh is disposed on a side surface of the support ring deviating from the bottom wall of the positioning groove, and the mesh is adhesively connected to the mounting surface.
The utility model discloses an in the embodiment, the sound production monomer in be formed with on the installation face and let out the leakage hole, the support ring corresponds let out the position department that leaks the leakage hole and be equipped with and dodge the hole.
In an embodiment of the present invention, the periphery of the second casing extends into the first casing and is welded to the periphery of the first casing in an alignment manner, the sounding unit and the mesh assembly are both contained in the first casing, and the mesh assembly is transversely spaced between the sounding unit and the second casing; the periphery of the second shell is in sealing connection with the support ring;
and/or, the free basin frame periphery wall of sound production is equipped with the blank pressing, the blank pressing with the internal perisporium welded connection of casing.
In an embodiment of the present invention, the support ring is spaced from the periphery of the second housing, and a second sealing member is disposed between the support ring and the periphery of the second housing to hermetically connect the support ring and the second housing.
The utility model discloses an in the embodiment, the speaker module still include with the flexible circuit board that the sound production monomer electricity is connected, flexible circuit board has and is located interior pad in the installation space, the internal perisporium of casing corresponds the position of interior pad is equipped with the insulating part.
In order to achieve the above object, the utility model also provides an electronic equipment, this electronic equipment includes the speaker module, and this speaker module includes:
a housing comprising a first shell and a second shell; the first shell and the second shell are both metal pieces, and the second shell is covered on the first shell to limit an installation space;
the sounding single body is arranged in the installation space and divides the installation space into a front sound cavity and a rear sound cavity; and
the mesh assembly is arranged in the rear sound cavity and divides the rear sound cavity into filling cavities, and sound absorption particles are filled in the filling cavities; the screen cloth subassembly includes support ring and screen cloth, the periphery of screen cloth is fixed in the support ring, the support ring support in the sound production monomer, the support ring is the metalwork.
The technical scheme of the utility model in, first casing and second casing are the metalwork, and the two need not additionally to increase welding thickness when the welding to can not occupy the cavity volume of the installation space that first casing and second casing formed, compare in the current cavity volume that adopts injection molding ultrasonic bonding's mode to increase and hold the chamber, promoted the acoustic performance of speaker module.
Furthermore, in the technical scheme of the utility model, the mesh assembly arranged in the rear acoustic cavity adopts the support ring made of metal material as support to realize the fixation of the mesh, because the support ring made of metal material can realize higher processing precision, the shape tolerance of the mesh assembly formed by the support ring made of metal material and mesh matching can reach +/-0.03 mm; like this, can make the leakproofness between the shell of screen cloth subassembly and speaker module better to the sound granule is inhaled in the reduction and the risk of going sound production monomer one side is reduced, reduces the probability that speaker module acoustic performance receives the influence, promotes speaker module reliability. And, compare in the working of plastics that adopts the PET material do support in order to realize that the screen cloth is fixed the mode (screen cloth subassembly thickness generally about 0.45 mm), the support ring that adopts the metal material does support in order to realize that the screen cloth is fixed the mode, can make the thickness of screen cloth subassembly reach 0.2mm, not only can satisfy the limit demand that the customer is miniaturized to the speaker module, but also can utilize the reduction of screen cloth subassembly thickness, create bigger filling volume to be favorable to promoting the acoustic performance of speaker module.
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 an assembly structure of a sound generating unit and a housing in a speaker module according to the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 at M;
FIG. 4 is a cross-sectional view taken at B-B of FIG. 1;
fig. 5 is an exploded view of an assembly structure of the sounding unit, the flexible circuit board and the housing according to the embodiment of the present invention;
fig. 6 is a schematic view of the assembly of the sound generating unit, the flexible circuit board and the first housing in the embodiment of the present invention;
fig. 7 is a schematic structural diagram of a second housing in an embodiment of the present invention;
fig. 8 is an exploded schematic view of another embodiment of the speaker module of the present invention;
fig. 9 is a cross-sectional view of the speaker module of fig. 8;
fig. 10 is a partial enlarged view of fig. 9 at N.
The 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, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to 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 the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
The utility model provides a speaker module shell aims at adopting the assembly that welding and sealing member sealed mode realized the shell simultaneously to reach under the prerequisite of guaranteeing the sealed effect of speaker module shell, promote the purpose of speaker module acoustic performance. Simultaneously, the screen cloth subassembly in the speaker module is formed by the support ring and the screen cloth cooperation that the metal material was made, not only promotes the assembly precision of screen cloth subassembly, can also realize the frivolous design of screen cloth subassembly, and the filling volume of sound granule is inhaled in the increase.
The specific structure of the speaker module housing according to the present invention will be described in the following embodiments:
in an embodiment of the present invention, the speaker module housing includes a first housing 100 and a second housing 200, the first housing 100 and the second housing 200 are made of metal material, and the second housing 200 covers the first housing 100 to define an installation space. The sound emitting unit 500 is provided in the installation space and divides the installation space into a front sound chamber and a rear sound chamber. It can be understood that, because first casing 100 and second casing 200 are the metalwork, its both need not additionally to increase welding thickness when welding to can not occupy the cavity volume that holds the chamber that first casing 100 and second casing 200 formed, thereby can increase the cavity volume of speaker module, promote the acoustic performance of speaker module. Optionally, the first casing 100 and the second casing 200 may be fixed and sealed in a laser welding manner, and the first casing 100 and the second casing 200 may also be fixed and sealed in a gluing manner, which is not limited in the present invention.
In another embodiment of the present invention, referring to fig. 1 to 4, the speaker module housing includes a first case 100, a second case 200, and a first sealing member 300.
The first shell 100 is provided with a first connecting part 101, the second shell 200 is covered on the first shell 100, the second shell 200 is provided with a second connecting part 201 corresponding to the first connecting part 101, and the second connecting part 201 is aligned with the first connecting part 101 to define an installation space; the first sealing member 300 is arranged around the periphery of the joint position of the second casing 200 and the first casing 100 to hermetically connect the second casing 200 and the first casing 100; the first housing 100 and the second housing 200 are both metal pieces, and the first housing 100 and the second housing 200 are welded and fixed.
The second casing 200 covers the first casing 100, and encloses with the first casing 100 and closes the installation space that forms the inner member that is used for holding the speaker module, and the second casing 200 is equipped with second connecting portion 201, and the first casing 100 is equipped with first connecting portion 101, through the counterpoint connection of second connecting portion 201 and first connecting portion 101, realizes the fixed connection function of second casing 200 and first casing 100. A first sealing member 300 is arranged around the periphery of the joint of the second housing 200 and the first housing 100, and the first sealing member 300 is used for sealing and connecting the second housing 200 and the first housing 100, so as to ensure the sealing effect of the enclosure of the speaker module. In this embodiment, the first casing 100 and the second casing 200 are both metal members, and when they are welded, the welding thickness does not need to be additionally increased, so that the cavity volume of the accommodating cavity formed by the first casing 100 and the second casing 200 is not occupied, and the acoustic performance is ensured.
It can be understood that the shape, structure and connection manner of the first connection portion 101 and the second connection portion 201 may be determined according to actual situations, for example, the first connection portion 101 and the second connection portion 201 are in butt joint connection by a protruding plate structure, or the first connection portion 101 and the second connection portion 201 are in limit connection by a protruding plate and a clamping groove, or the first connection portion 101 and the second connection portion 201 are in shaft hole connection, etc. The specific shape, structure and connection manner are not limited herein.
In practical applications, the first sealing element 300 may be made of a sealing adhesive, and after the second casing 200 and the first casing 100 are aligned by the first connecting portion 101 and the second connecting portion 201, and the first casing 100 and the second casing 200 are welded and fixed, the sealing adhesive may be coated on a periphery of a joint between the second casing 200 and the first casing 100 to seal the second casing 200 and the first casing 100.
In the practical application process, the material selection of the second casing 200 and the first casing 100 may be determined according to the actual situation, and in order to ensure the structural reliability and the acoustic performance, a metal material made of a thin-wall material may be used, and optionally, the second casing 200 and the first casing 100 may be made of a stainless steel material or other materials, so that the speaker module housing is lighter and thinner, the volume of the accommodating cavity is ensured, and the acoustic performance is improved.
In the technical scheme of this embodiment, first casing 100 and second casing 200 are the metalwork, and the two need not additionally to increase welding thickness when the welding to can not occupy the cavity volume that holds the chamber that first casing 100 and second casing 200 formed, compare in the current cavity volume that has increased and hold the chamber that adopts injection molding ultrasonic bonding's mode, promoted the acoustic performance of speaker module. In addition, after the first casing 100 and the second casing 200 are welded and fixed, the first casing 100 and the second casing 200 are also connected in a sealing manner by the first sealing member 300, so that the sealing effect is further improved compared with the existing metal shell which only adopts a welding and sealing manner. Therefore, the sealing effect of the loudspeaker module shell is ensured, and the acoustic performance of the loudspeaker module is improved.
In an embodiment of the present invention, referring to fig. 1 to 3 and fig. 6 to 7, one of the first connecting portion 101 and the second connecting portion 201 is a limiting groove 101a, the other one of the first connecting portion 101 and the second connecting portion 201 is a protrusion 201a, and the protrusion 201a is disposed in the limiting groove 101 a.
It can be understood that the first connecting portion 101 and the second connecting portion 201 are limited by the protrusion 201a and the limiting groove 101a, so as to achieve the positioning function during the assembling process of the second housing 200 and the first housing 100. In an actual application process, when the first connecting portion 101 is the limiting groove 101a and the second connecting portion 201 is the protrusion 201a, that is, the limiting groove 101a is disposed on the first casing 100, and the protrusion 201a is disposed on the second casing 200, the second casing 200 can be erected in the limiting groove 101a through the protrusion 201a, so as to position the second casing 200 and the first casing 100. Or, when the first connecting portion 101 is the protrusion 201a, the second connecting portion 201 is the limiting groove 101a, that is, the protrusion 201a is disposed on the first casing 100, the second casing 200 is disposed with the limiting groove 101a, and when the second casing 200 is covered on the first casing 100, the limiting groove 101a is covered outside the protrusion 201a, so as to realize the clamping limiting function of the limiting groove 101a and the protrusion 201a, and realize the positioning of the second casing 200 and the first casing 100.
In practical applications, the welding position of the first casing 100 and the second casing 200 may be at a contact portion of the first connecting portion 101 and the second connecting portion 201, such as the protrusion 201a is welded and fixed with a groove wall of the limiting groove 101 a; or other contact parts except the first connecting part 101 and the second connecting part 201 are welded and fixed; alternatively, the first connection portion 101 and the second connection portion 201 may be fixed by contact welding, and other contact portions may be fixed by welding.
In an embodiment of the present invention, referring to fig. 2 to 7, the protrusion 201a is welded and fixed to the groove wall of the corresponding limiting groove 101 a. It can be understood that the first casing 100 and the second casing 200 are limited in the limiting groove 101a by the protrusion 201a to realize alignment, and are directly fixed by welding the groove walls of the protrusion 201a and the corresponding limiting groove 101a, so that additional welding positions are not required to be found, and the assembly process of the first casing 100 and the second casing 200 is simplified.
In an embodiment of the present invention, referring to fig. 2 to 7, the first casing 100 includes a bottom plate 110 and a side plate 120 surrounding the bottom plate 110, the bottom plate 110 is disposed opposite to the second casing 200, a limiting groove 101a is disposed on one side of the side plate 120 departing from the bottom plate 110, and a protrusion 201a is disposed on an edge of the second casing 200.
In this embodiment, the first housing 100 has a bottom plate 110 and side plates 120, the side plates 120 are arranged around the periphery of the bottom plate 110, and the second housing 200 is arranged opposite to the bottom plate 110, so that the second housing 200, the side plates 120 and the bottom plate 110 enclose a mounting space. The edge of the second housing 200 is provided with a protrusion 201a, one side of the side plate 120 departing from the bottom plate 110 is provided with a limiting groove 101a, and the protrusion 201a is welded and fixed in the limiting groove 101a, so that the fixing function of the second housing 200 and the side plate 120 is realized.
Alternatively, the side plate 120 is surrounded on the outer circumference of the second housing 200, the limiting groove 101a penetrates through the inner side surface of the side plate 120, and the protrusion 201a protrudes from the second housing 200 toward the side plate 120 to extend into the limiting groove 101 a.
In this embodiment, when the second housing 200 is covered on the first housing 100, the second housing 200 is located inside the side plate 120, at this time, the limiting groove 101a penetrates through the inner surface of the side plate 120, which is equivalent to a notch formed on the side of the side plate 120, and the protrusion 201a is protruded from the second housing 200 toward the side plate 120. In the actual installation process, the protrusion 201a can be lapped in the limiting groove 101a to realize the connection and positioning of the second housing 200 and the side plate 120, and then the protrusion 201a and the groove wall of the limiting groove 101a are welded and fixed, so that the fixed connection of the second housing 200 and the side plate 120 is realized.
Further, an end surface of the protrusion 201a facing away from the second housing 200 has a space from an outer side surface of the side plate 120.
It can be understood that, in the foregoing embodiment, the protrusion 201a is disposed in the limiting groove 101a, and by setting the end surface of the protrusion 201a to have a distance from the outer side surface of the side plate 120, an assembly space is reserved for the protrusion 201a to be matched with the limiting groove 101a, so as to prevent the protrusion 201a from protruding out of the outer wall of the side plate 120, thereby ensuring the integrity of the overall appearance of the speaker module housing.
In an embodiment of the present invention, referring to fig. 1 to 3 and fig. 7, a groove 202 is formed around the periphery of the second casing 200 and the first casing 100, and the first sealing element 300 is disposed in the groove 202.
In this embodiment, the groove 202 is formed on the periphery of the second casing 200, and it can be understood that the groove 202 is formed by bending and recessing the edge of the outer periphery of the second casing 200, or the groove structure with the groove 202 is connected to the outer periphery of the second casing 200. The function of sealing the first and second housings 100 and 200 is achieved by providing a first seal 300 within the groove 202.
Optionally, the side plate 120 of the first casing 100 is enclosed at the periphery of the second casing 200, the groove 202 may be formed by enclosing the side plate 120 and the periphery of the second casing 200, and by disposing the first sealing member 300 in the groove 202, the first sealing member 300 is connected to the second casing 200 and the side plate 120 at the same time, so as to achieve the effect of sealing the second casing 200 and the side plate 120.
In an embodiment, referring to fig. 4, the second housing 200 includes a central portion 200A and an edge portion 200B disposed at an outer periphery of the central portion 200A, the edge portion 200B is connected to the first housing 100, and the edge portion 200B is bent and extended toward a direction close to the installation space with respect to the central portion 200A to define a groove 202 with the first housing 100.
In this embodiment, considering the metal material of the second housing 200, the edge portion 200B is bent and extended toward the mounting space relative to the central portion 200A to define the groove 202 with the first housing 100, thereby simplifying the molding process. Optionally, the edge portion 200B is bent toward the bottom plate 110 to define the groove 202 with the side plate 120, simplifying the assembly structure.
In the practical application process, the groove 202 is equivalent to a glue containing groove for containing the sealant, and the groove 202 with the containing space is arranged to contain enough sealing glue, so that the sealant is solidified to form the first sealing element 300 for sealing the second shell 200 and the side plate 120, and the sealing effect is further improved. That is, the periphery of the second housing 200 cooperates with the inner peripheral wall of the first housing 100 to define a glue containing groove, the glue containing groove is filled with sealing glue, and the sealing glue is solidified to form the first sealing element 300.
In an embodiment of the present invention, referring to fig. 1, 6 and 7, a plurality of limiting grooves 101a are provided, and the plurality of limiting grooves 101a are distributed on the side plate 120 at intervals;
a plurality of protrusions 201a are arranged, and the plurality of protrusions 201a are distributed at the periphery of the second housing 200 at intervals; each protrusion 201a is correspondingly disposed in one of the limiting grooves 101 a.
In this embodiment, a plurality of spacing grooves 101a are formed along the periphery of the side plate 120, a plurality of protrusions 201a are formed at intervals on the periphery of the second housing 200, and when the second housing 200 is mounted on the side plate 120, one protrusion 201a is correspondingly formed in one spacing groove 101a, so that the connecting portions of the second housing 200 and the side plate 120 are uniformly distributed, the connecting force between the two is more balanced, and the reliability of the housing structure of the speaker module is further improved.
It can be understood that the distribution of the plurality of limiting grooves 101a may depend on the shape of the first casing 100, for example, when the side plate 120 of the first casing 100 is a circular ring structure, the plurality of limiting grooves 101a may be uniformly distributed around the center of the circular ring; when the side plate 120 is a circular rectangular structure, the plurality of limiting grooves 101a may be formed in more long sides and less short sides according to actual conditions, so as to ensure structural strength while balancing stress. Similarly, the distribution of the plurality of protrusions 201a is consistent with the distribution of the plurality of limiting grooves 101a, so that the structural utilization rate is improved, and the occurrence of neutral positions is prevented.
In an embodiment of the present invention, referring to fig. 1 to 5, the central portion 200A is recessed toward a direction away from the bottom plate 110 to form a cavity 210, a through hole 211 is formed on a wall of the cavity 210, and the damping structure 400 is installed at the through hole 211.
It can be understood that the second casing 200 and the first casing 100 enclose to form an outer shell of the speaker, in the practical application process, the sound generating unit 500 in the speaker module is installed in the first casing 100, the central portion 200A is recessed in a direction departing from the bottom plate 110 to form the cavity 210, and a rear sound cavity of the speaker module is formed between the cavity 210 and the sound generating unit 500, so as to improve the low-frequency acoustic performance of the speaker module.
The utility model discloses still provide a speaker module, refer to fig. 1 to 7, this speaker module includes sound production monomer 500 and speaker module shell, and the concrete structure of this speaker module shell refers to above-mentioned embodiment, because this speaker module has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. Wherein, the single sound generating body 500 is arranged in the installation space and divides the installation space into a front sound cavity and a rear sound cavity, and the basin frame 510 of the single sound generating body 500 is welded and fixed on the inner peripheral wall of the first shell 100. Specifically, the peripheral wall of the tub 510 is provided with a blank holder, and the blank holder is welded to the inner peripheral wall of the first housing 100.
The sounding unit 500 is mounted on the first casing 100 of the speaker module housing, and the basin frame 510 of the sounding unit 500 is welded and fixed to the side plate 120 of the first casing 100, so that the mounting reliability of the sounding unit 500 and the first casing 100 is ensured. The sounding unit 500 and the first shell 100 form a structural module, and the structural module is connected with the second shell 200 to form a closed rear sound cavity, so that the cavity of the rear sound cavity is enlarged, the filling space is further enlarged, and the acoustic performance is improved.
Alternatively, the frame 510 of the sounding unit 500 is fixed to the side plate 120 by spot welding.
In this embodiment, the first housing 100 in the speaker module housing is provided with a first connecting portion 101, the second housing 200 is provided with a second connecting portion 201 corresponding to the first connecting portion 101, and when the second housing 200 is covered on the first housing 100, the second connecting portion 201 is connected to the first connecting portion 101 in an alignment manner, so as to fixedly connect the second housing 200 to the first housing 100. Meanwhile, the first sealing member 300 is disposed around the periphery of the second housing 200 to hermetically connect the second housing 200 and the first housing 100, thereby ensuring a sealing effect. In this embodiment, the second housing 200 and the first housing 100 are both metal members, and when they are welded, no additional welding thickness is required, so that the volume of the accommodating cavity formed by the first housing 100 and the second housing 200 is not occupied, and compared with the existing mode of ultrasonic welding by using injection molding, the volume of the accommodating cavity is increased, and the acoustic performance of the speaker module is improved; meanwhile, after the first casing 100 and the second casing 200 are welded and fixed, the first casing 100 and the second casing 200 are connected in a sealing manner by the first sealing element 300, and compared with the existing metal shell which only adopts a welding and sealing manner, the sealing effect is further improved.
In an embodiment of the present invention, the speaker module further includes a flexible circuit board 600 electrically connected to the sound generating unit 500, the flexible circuit board 600 has an inner pad 610 located in the installation space, and the inner peripheral wall of the first casing 100 is provided with an insulator 700 at a position corresponding to the inner pad 610.
It can be understood that the flexible circuit board 600 functions to connect the sound emitting unit 500 with an external circuit to ensure the functionality of the sound emitting unit 500. The flexible circuit board 600 is connected with the sounding unit 500 in a welding manner, and in an actual welding process, some solders such as tin may overflow, in order to avoid a short circuit risk, the insulating member 700 is disposed at a position corresponding to the inner pad 610 on the inner wall of the first casing 100, so that the effect of isolating the inner pad 610 from the first casing 100 is achieved, and a short circuit is prevented. Alternatively, the insulating member 700 may be an insulating tape attached to the inner wall of the side plate 120.
In an embodiment of the present invention, referring to fig. 8 to 10, the speaker module further includes a mesh assembly 800, the mesh assembly 800 is disposed in the rear acoustic cavity and divides the rear acoustic cavity into the filling cavity 220, and the filling cavity 220 is filled with sound-absorbing particles; the mesh assembly 800 includes a support ring 810 and a mesh 820, wherein the periphery of the mesh 820 is fixed to the support ring 810, and the support ring 810 is a metal piece.
In the technical solution of this embodiment, the mesh assembly 800 disposed in the rear acoustic cavity is supported by the metal support ring 810 to fix the mesh 820, and since the metal support ring 810 can achieve higher processing precision, the shape tolerance of the mesh assembly 800 formed by the metal support ring 810 and the mesh 820 in a matching manner can reach ± 0.03 mm; like this, can make the leakproofness between screen cloth subassembly 800 and the shell of speaker module better to the sound granule is inhaled in the reduction and the risk of going sound production monomer 500 one side reduces the probability that speaker module acoustic performance receives the influence, promotes speaker module reliability. And, compare in the working of plastics that adopts the PET material and do the mode of supporting in order to realize that screen cloth 820 is fixed (screen cloth subassembly 800 thickness is generally about 0.45 mm), the mode of supporting in order to realize that screen cloth 820 is fixed is done to the support ring 810 that adopts the metal material, can make screen cloth subassembly 800's thickness reach 0.2mm, not only can satisfy the limit demand that the customer is miniaturized to the speaker module, but also can utilize the reduction of screen cloth subassembly 800 thickness, create bigger filling volume, thereby be favorable to promoting the acoustic performance of speaker module.
In practice, the support ring 810 may be made of stainless steel or other materials, so that the support ring 810 has good strength and is thinner.
The specific arrangement of the screen assembly 800 is described below:
in an embodiment of the present invention, referring to fig. 8 to 10, the sound generating unit 500 has a sound generating surface 501 and a mounting surface 502 opposite to the sound generating surface 501, and the support ring 810 is disposed on the mounting surface 502.
The sound emitting surface 501 of the sound emitting unit 500 is the front surface of the sound emitting unit 500, that is, the surface of the sound emitting unit 500 on the side for emitting sound.
In this embodiment, the bottom plate 110 of the first casing 100 is provided with the sound hole 111, the sound generating unit 500 is accommodated in the first casing 100, the sound generating surface 501 of the sound generating unit 500 is disposed facing the sound hole 111, and the mounting surface 502 of the sound generating unit 500 is disposed facing away from the sound hole 111. Further, the edge portion 200B of the second casing 200 extends into the first casing 100 and is welded to the side plate 120 of the first casing 100 in alignment, and the mounting surface 502 of the sound generating unit 500 is disposed facing the second casing 200; that is, the sound emitting unit 500 has a mounting surface 502 close to the second housing 200. Further, the mesh assembly 800 is accommodated in the first casing 100 and is transversely partitioned between the sound generating unit 500 and the second casing 200 to divide the rear sound cavity into two parts; the part clamped by the mesh assembly 800 and the second shell 200 is the filling cavity 220, and is used for filling sound absorption particles to improve the acoustic performance of the speaker module.
It will be appreciated that the mesh assembly 800 may be secured within the rear acoustic chamber by securing the support ring 810 to the mounting surface 502 and securing the mesh 820 to the support ring 810. And, with the help of the supporting role of installation face 502, can also effectively promote support ring 810 and screen cloth subassembly 800's stability to be favorable to going on of follow-up filling operation, be favorable to guaranteeing the filling volume, and then be favorable to realizing the high-quality acoustic performance surface of speaker module.
In practice, the support ring 810 may be fixed to the mounting surface 502 by a single method or a combination of single methods, such as glue connection, snap connection, or plug connection. The mesh 820 may be fixed to the support ring 810, particularly to one surface of the support ring 810, by gluing or the like.
In an embodiment of the present invention, referring to fig. 8 to 10, the circumference of the mounting surface 502 is recessed to form an annular positioning groove 502a, and the support ring 810 is received in the positioning groove 502 a.
As can be appreciated, the arrangement of the support ring 810 accommodated in the positioning groove 502a can not only utilize the positioning function of the positioning groove 502a to improve the arrangement stability of the support ring 810, but also improve the arrangement stability of the mesh assembly 800; and can also utilize the accommodating effect of constant head tank 502a, can reduce the volume of filling chamber 220 that support ring 810 occupy, increase the cavity 210 volume of filling chamber 220 to be favorable to promoting the filling volume of inhaling the sound granule, promote the acoustic performance of speaker module.
In an embodiment of the present invention, referring to fig. 8 to 10, the mesh 820 is disposed on a side surface of the support ring 810 away from the bottom wall of the positioning groove 502 a. Thus, the connection stability of the mesh 820 and the support ring 810 is improved, and the interference between the groove wall of the positioning groove 502a and the mesh 820 is reduced; thereby, promote screen cloth subassembly 800's reliability, guarantee screen cloth subassembly 800 to inhaling the effective isolation of sound granule, guarantee the high-quality acoustic performance surface of speaker module.
In an embodiment of the present invention, referring to fig. 8 to 10, the mesh 820 is attached to the mounting surface 502 by gluing. That is, the mesh 820 is adhesively attached to the mounting surface 502.
In this embodiment, the mounting surface 502 is recessed to form an annular positioning groove 502a for receiving the support ring 810; and the area surrounded by the annular positioning groove 502a, i.e. the central area of the mounting surface 502, is relatively protruded. At this time, the central region of the mounting surface 502 may be attached to the web 820 by gluing. In practical application, the gluing can be realized by adopting a double-sided adhesive tape or by coating adhesive tape for solidification.
As can be appreciated, the mesh 820 is attached to the mounting surface 502 by gluing, which not only enhances the stability of the mesh assembly 800, but also facilitates the subsequent filling operation; but also realized screen cloth 820 and sound production monomer 500's lug connection to be favorable to avoiding screen cloth 820 to produce resonance at sound production monomer 500 during operation, the speaker module acoustic performance who avoids resonance to bring is influenced.
In an embodiment of the present invention, referring to fig. 8 to 10, the sound generating unit 500 is formed with a leakage hole (not shown) on the mounting surface 502, and the support ring 810 is provided with a relief hole 811 at a position corresponding to the leakage hole.
In this embodiment, the mounting surface 502 is substantially rectangular, and four corners of the mounting surface are provided with leakage holes for communicating with the space on the back side of the diaphragm of the sound generating unit 500. The shape of support ring 810 and installation face 502 looks adaptation all are equipped with on its four angles and dodge hole 811, dodge hole 811 and be used for communicating the leakage hole that corresponds with back acoustic cavity.
Can understand ground, dodge hole 811's setting, can avoid support ring 810 to leaking blockking of leakage hole, avoid screen cloth subassembly 800's setting to the influence of sound production monomer 500 working property to ensure the good working property of speaker module, promote speaker module's reliability. Moreover, the arrangement of the avoiding hole 811 can realize the structural design of arranging the leakage hole on the mounting surface 502, so as to avoid the occurrence of the leakage hole in the manner of being arranged on the side surface of the sounding unit 500, and avoid the arrangement of needing to leave an air flow channel between the side plate 120 of the first shell 100 and the side surface of the sounding unit 500, thereby reducing the isolation difficulty of the filling cavity 220 and avoiding the blockage of the miniaturization of the speaker module.
In an embodiment of the present invention, referring to fig. 8 to 10, the periphery of the second casing 200 extends into the first casing 100 and is welded to the periphery of the first casing 100 in an aligned manner, the sounding unit 500 and the mesh assembly 800 are both accommodated in the first casing 100, and the mesh assembly 800 is transversely spaced between the sounding unit 500 and the second casing 200;
the periphery of the second housing 200 is sealingly connected to the support ring 810.
In this embodiment, the bottom plate 110 of the first casing 100 is provided with the sound hole 111, the sound generating unit 500 is accommodated in the first casing 100, the sound generating surface 501 of the sound generating unit 500 is disposed facing the sound hole 111, and the mounting surface 502 of the sound generating unit 500 is disposed facing away from the sound hole 111. The edge portion 200B of the second casing 200 extends into the first casing 100 and is welded to the side plate 120 of the first casing 100 in alignment, and the mounting surface 502 of the sound generating unit 500 is disposed facing the second casing 200. The mesh assembly 800 is accommodated in the first casing 100 and is transversely partitioned between the sound generating unit 500 and the second casing 200 to divide the rear sound cavity into two parts; the part clamped by the mesh assembly 800 and the second shell 200 is the filling cavity 220, and is used for filling sound absorption particles to improve the acoustic performance of the speaker module. The rim portion 200B of the second housing 200 is sealingly connected to the support ring 810.
In practical applications, the sealing connection between the rim portion 200B of the second housing 200 and the support ring 810 may be realized by, for example, abutting the rim portion 200B of the second housing 200 against the support ring 810, in addition to the sealing member described later.
Understandably, the support ring 810 is hermetically connected with the periphery of the second shell 200, so that the stability of the second shell 200 is successfully utilized to improve the sealing performance of the filling cavity 220, and the better sealing performance of the filling cavity 220 is favorably realized, the risk that sound absorption particles go to one side of the sounding monomer 500 is further reduced, the probability that the acoustic performance of the speaker module is affected is reduced, and the reliability of the speaker module is improved.
In an embodiment of the present invention, referring to fig. 8 to 10, the supporting ring 810 is spaced from the periphery of the second housing 200, and a second sealing member (not shown) is disposed between the supporting ring 810 and the periphery of the second housing 200 to hermetically connect the supporting ring 810 and the second housing 200.
In the present embodiment, a second seal is provided between the rim portion 200B of the second housing 200 and the support ring 810 to sealingly connect the rim portion 200B of the second housing 200 and the support ring 810.
Understandably, the gap between the support ring 810 and the periphery of the second shell 200 is sealed by the second sealing element, so that the sealing performance of the filling cavity 220 can be effectively improved, the risk that sound absorption particles go to one side of the sound generating monomer 500 is further reduced, the probability that the acoustic performance of the loudspeaker module is influenced is reduced, and the reliability of the loudspeaker module is improved.
In practical application, the second sealing element can be a structural element with sealing performance, such as a rubber element, a silicon element and the like; the second sealing element can be in a ring shape, a one-section type end-to-end butt structure, a multi-section type adjacent two-section end-to-end butt structure and the like.
In an embodiment of the present invention, referring to fig. 8 to 10, a sealing glue is filled between the support ring 810 and the periphery of the second housing 200, and the sealing glue is solidified to form a second sealing member.
It will be appreciated that the sealing glue, before it sets, due to the variable shape, can better fill the gap between the support ring 810 and the periphery of the second housing 200, so that the cross-sectional shape of the second seal formed by the sealing glue after it sets fits better with the aforementioned gap, to further improve the sealing of the filling cavity 220.
The utility model discloses still provide an electronic equipment, this electronic equipment includes the speaker module, and this electronic equipment's concrete structure refers to above-mentioned embodiment, because this speaker module has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here.
It is understood that the electronic device may be, but is not limited to, a mobile phone, a notebook, a tablet, a Personal Digital Assistant (PDA), an e-book reader, an MP3 (Moving Picture Experts Group Audio Layer III) player, an MP4 (Moving Picture Experts Group Audio Layer IV) player, a wearable device, a navigator, a handheld game console, a virtual and real device, an augmented reality device, etc.
The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims (10)

1. A speaker module, comprising:
a housing comprising a first shell and a second shell; the first shell and the second shell are both metal pieces, and the second shell is covered on the first shell to limit an installation space;
the sounding single body is arranged in the installation space and divides the installation space into a front sound cavity and a rear sound cavity; and
the mesh assembly is arranged in the rear sound cavity and divides the rear sound cavity into filling cavities, and sound absorption particles are filled in the filling cavities; the screen cloth subassembly includes support ring and screen cloth, the periphery of screen cloth is fixed in the support ring, the support ring support in the sound production monomer, the support ring is the metalwork.
2. The speaker module as claimed in claim 1, wherein the first and second housings are welded in alignment, and the enclosure further comprises a first sealing member, the first sealing member being disposed around a periphery of a joint of the first and second housings to sealingly connect the first and second housings.
3. The speaker module as recited in claim 2, wherein a perimeter of the second enclosure cooperates with an inner perimeter wall of the first enclosure to define a glue reservoir, the glue reservoir being filled with a sealing glue, the sealing glue solidifying to form the first seal.
4. The speaker module as claimed in claim 1, wherein the sound generating unit has a mounting surface adjacent to the second housing, the mounting surface is recessed at a periphery thereof to form a ring-shaped positioning groove, and the support ring is received in the positioning groove.
5. The speaker module as set forth in claim 4 wherein said mesh is disposed on a side surface of said support ring facing away from said detent bottom wall, said mesh being adhesively attached to said mounting surface.
6. The speaker module as claimed in claim 4, wherein the sound generating unit has a leakage hole formed on the mounting surface, and the support ring has an avoiding hole at a position corresponding to the leakage hole.
7. The speaker module as claimed in any one of claims 1 to 6, wherein the periphery of the second housing extends into the first housing and is welded to the periphery of the first housing in alignment, the sound-generating unit and the mesh assembly are both accommodated in the first housing, and the mesh assembly is transversely spaced between the sound-generating unit and the second housing; the periphery of the second shell is in sealing connection with the support ring;
and/or, the free basin frame periphery wall of sound production is equipped with the blank pressing, the blank pressing with the internal perisporium welded connection of shell.
8. The speaker module as recited in claim 7, wherein the support ring is spaced from a periphery of the second housing, and a second seal is disposed between the support ring and the periphery of the second housing to sealingly couple the support ring and the second housing.
9. The speaker module as claimed in any one of claims 1 to 6, further comprising a flexible circuit board electrically connected to the sound-emitting unit, the flexible circuit board having an inner pad located in the mounting space, wherein the inner peripheral wall of the housing is provided with an insulator at a position corresponding to the inner pad.
10. An electronic device comprising the speaker module according to any one of claims 1 to 9.
CN202121461982.6U 2021-06-28 2021-06-28 Speaker module and electronic equipment Active CN214756796U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121461982.6U CN214756796U (en) 2021-06-28 2021-06-28 Speaker module and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121461982.6U CN214756796U (en) 2021-06-28 2021-06-28 Speaker module and electronic equipment

Publications (1)

Publication Number Publication Date
CN214756796U true CN214756796U (en) 2021-11-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121461982.6U Active CN214756796U (en) 2021-06-28 2021-06-28 Speaker module and electronic equipment

Country Status (1)

Country Link
CN (1) CN214756796U (en)

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