CN114866915B - Sounding module and terminal equipment - Google Patents
Sounding module and terminal equipment Download PDFInfo
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- CN114866915B CN114866915B CN202210346965.0A CN202210346965A CN114866915B CN 114866915 B CN114866915 B CN 114866915B CN 202210346965 A CN202210346965 A CN 202210346965A CN 114866915 B CN114866915 B CN 114866915B
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- 238000002955 isolation Methods 0.000 claims abstract description 54
- 238000004891 communication Methods 0.000 claims abstract description 32
- 239000011358 absorbing material Substances 0.000 claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 claims abstract description 18
- 238000009434 installation Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 23
- 230000006870 function Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000003190 augmentative effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
- H04R9/027—Air gaps using a magnetic fluid
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a sounding module and terminal equipment. The sound production module includes sound production unit and dilatation chamber, and sound production unit includes: the loudspeaker unit is arranged opposite to the receiving unit; the sound generating unit further comprises a magnetic circuit system, and the vibration system of the receiving unit and the vibration system of the loudspeaker unit are arranged on two opposite sides of the magnetic circuit system; the receiving unit comprises a first vibrating diaphragm, and a first rear cavity is formed between the first vibrating diaphragm and the magnetic circuit system; the loudspeaker unit comprises a second vibrating diaphragm, and a second rear cavity is formed between the second vibrating diaphragm and the magnetic circuit system; the first rear cavity is isolated from the second rear cavity; the second rear cavity is communicated with the expansion cavity, and the first rear cavity is isolated from the expansion cavity; the magnetic circuit system is provided with a communication hole for communicating the second rear cavity and the expansion cavity, and the sounding unit further comprises an isolation net, wherein the isolation net is covered on the communication hole and is used for isolating sound-absorbing materials in the expansion cavity. According to the technical scheme, the sounding effect of the sounding module can be improved, and the sound absorbing material is isolated from the sounding unit.
Description
Technical Field
The invention relates to the technical field of electroacoustic transduction, in particular to a sounding module and terminal equipment.
Background
Currently, in order to make an electronic product (such as a mobile phone) in the related art have a better stereo effect when the electronic product is in a speaker play mode, and have a better privacy protection effect when the electronic product is in a phone call mode. Based on the principle of the acoustic dipole effect, the superposition of two sound waves with the same phase plays a role in enhancing, and the cancellation of two sound waves with opposite phases plays a role in attenuating, a receiver monomer (defined as a scheme one) is usually overlapped by using a speaker module in an audio system of an electronic product, or a monomer with double-sided sound production (defined as a scheme two) is directly used, so that the stereo effect of the loudspeaker in the external playing mode is improved by the superposition enhancement of the two sound waves with the same phase is emitted, or the privacy protection effect of the earphone in the conversation mode is improved by the cancellation of the two sound waves with opposite phases is emitted based on the acoustic dipole effect.
However, when using the first and second schemes described above, there are still many drawbacks. Specifically, in scheme one: the speaker module and the receiver monomer are two independent devices, and the speaker module and the receiver monomer need to be stacked back to back when being installed in the shell of the electronic equipment. The back-to-back stacking arrangement tends to occupy a very large mounting space in the stacking direction when mounting the two devices, but the thickness of the electronic device is generally relatively thin, which makes it difficult to mount the stacked speaker module and receiver unit together in the housing of the electronic device. At the same time, the two separate devices also result in a relatively large number of integral components, which increases the overall manufacturing cost of the electronic device. And in scheme two: two sets of vibration systems in a single body with double-sided sound production are usually arranged to share an acoustic rear cavity, and when the two sets of vibration systems work respectively, air flows can interfere with each other and influence when flowing due to the fact that the two sets of vibration systems share the acoustic rear cavity, so that the vibration states of the vibration systems are influenced to cause a series of problems such as nonlinear distortion rising and swinging vibration abnormal sound, and the final sound production effect is influenced; in addition, since the volume-expanding cavity of the speaker module is usually added with sound-absorbing materials such as zeolite, the sound-absorbing materials can raise low frequency, and in order to prevent the sound-absorbing materials from entering the speaker module, a spacer is required to isolate the sound-absorbing materials from the sound-generating unit.
Disclosure of Invention
The invention mainly aims to provide a sound generating module, which aims to improve the sound generating effect of the sound generating module and isolate a sound absorbing material from a sound generating unit.
In order to achieve the above object, the present invention provides a sound generating module, including a sound generating unit and a capacity expansion cavity, the sound generating unit includes: the loudspeaker unit is arranged opposite to the receiving unit;
The sound generating unit further comprises a magnetic circuit system, and the vibration system of the receiving unit and the vibration system of the loudspeaker unit are arranged on two opposite sides of the magnetic circuit system;
The receiving unit comprises a first vibrating diaphragm, and a first rear cavity is formed between the first vibrating diaphragm and the magnetic circuit system; the loudspeaker unit comprises a second vibrating diaphragm, and a second rear cavity is formed between the second vibrating diaphragm and the magnetic circuit system; the first rear cavity and the second rear cavity are arranged in a separated mode; the second rear cavity of the loudspeaker unit is communicated with the expansion cavity, and the first rear cavity of the receiving unit is isolated from the expansion cavity;
The magnetic circuit system is provided with a communication hole for communicating the second rear cavity with the expansion cavity, the sound generating unit further comprises an isolation net, and the isolation net cover is arranged on the communication hole and used for isolating sound absorbing materials in the expansion cavity.
In an embodiment of the invention, the magnetic circuit system includes:
the magnetic conduction assembly comprises a first magnetic conduction plate and a second magnetic conduction plate, and the first magnetic conduction plate and the second magnetic conduction plate are arranged at opposite intervals; and
The magnet assembly is arranged between the first magnetic conduction plate and the second magnetic conduction plate, the magnet assembly comprises an inner magnet, a middle magnet and an outer magnet, the middle magnet surrounds the outer side of the inner magnet and is arranged at intervals with the inner magnet to form a first magnetic gap of the receiving unit, and the outer magnet surrounds the outer side of the middle magnet and is arranged at intervals with the middle magnet to form a second magnetic gap of the loudspeaker unit.
In an embodiment of the present invention, the external magnet is provided with a side sound hole, the first magnetic conductive plate is provided with a sound outlet, and the side sound hole and the sound outlet form the communication hole;
the isolation net comprises a main body part and a side part which are connected, the main body part is covered on the sound outlet, meshes are arranged at the positions of the main body part corresponding to the sound outlet, the side part is covered on the side sound outlet, and meshes are arranged at the positions of the side part corresponding to the side sound outlet.
In an embodiment of the present invention, the sound generating unit further includes a frame, where the frame is disposed on a side of the second magnetic conductive plate away from the first magnetic conductive plate, and the second vibrating diaphragm is fixed to the frame and encloses the frame and the magnetic circuit system to form the second rear cavity;
One side of the frame body, which deviates from the second vibrating diaphragm, is provided with a supporting part, the supporting part stretches into the side sound hole to divide the side sound hole into a first sound hole and a second sound hole, the side part comprises a first side wall and a second side wall, the first side wall covers the first sound hole, meshes are arranged at the position, corresponding to the first sound hole, of the first side wall, the second side wall covers the second sound hole, and meshes are arranged at the position, corresponding to the second sound hole, of the second side wall.
In one embodiment of the present invention, the first sound hole is located on the short axis side of the external magnet, and the second sound hole is located on the long axis side of the external magnet.
In an embodiment of the present invention, the main body portion is provided with a first notch adapted to the supporting portion, and the supporting portion is at least partially disposed in the first notch;
and/or, the first magnetic conduction plate is provided with a second gap matched with the supporting part, and the supporting part is at least partially arranged in the second gap.
In an embodiment of the invention, a groove is formed on one side of the first magnetic conductive plate, which is opposite to the second magnetic conductive plate, the sound outlet penetrates through the bottom of the groove, and the main body part is at least partially installed in the groove.
In an embodiment of the invention, the isolation net is a metal net;
And/or defining the thickness of the isolation net as D, and meeting the condition: d is more than or equal to 0.05mm;
and/or defining the aperture of the mesh hole in the isolation net as R, and meeting the condition: r is more than or equal to 0.08mm and less than or equal to 0.15mm;
and/or the isolation net is adhered to the magnetic circuit system.
In an embodiment of the invention, the sound generating module further includes a fixed housing, the fixed housing fixes the sound generating unit, and the expansion cavity is formed between the fixed housing and the sound generating unit in a surrounding manner; and sound absorbing materials are arranged in the expansion cavity, and the isolation net is used for isolating the sound absorbing materials.
The invention also provides a terminal device, comprising:
A housing in which an installation cavity is formed;
the sounding module is arranged in the mounting cavity; wherein, the sound production module includes:
the sound production unit and dilatation chamber, the sound production unit includes: the loudspeaker unit is arranged opposite to the receiving unit;
The sound generating unit further comprises a magnetic circuit system, and the vibration system of the receiving unit and the vibration system of the loudspeaker unit are arranged on two opposite sides of the magnetic circuit system;
The receiving unit comprises a first vibrating diaphragm, and a first rear cavity is formed between the first vibrating diaphragm and the magnetic circuit system; the loudspeaker unit comprises a second vibrating diaphragm, and a second rear cavity is formed between the second vibrating diaphragm and the magnetic circuit system; the first rear cavity and the second rear cavity are arranged in a separated mode; the second rear cavity of the loudspeaker unit is communicated with the expansion cavity, and the first rear cavity of the receiving unit is isolated from the expansion cavity;
The magnetic circuit system is provided with a communication hole for communicating the second rear cavity with the expansion cavity, the sound generating unit further comprises an isolation net, and the isolation net cover is arranged on the communication hole and used for isolating sound absorbing materials in the expansion cavity.
According to the technical scheme, the sound generating module is provided with the receiving unit and the loudspeaker unit, so that the sound generating module can work through the receiving unit and the loudspeaker unit respectively to have the dual functions of a loudspeaker function and a receiver function. Moreover, because the receiving unit and the speaker unit share a magnetic circuit system, compared with the simple back-to-back superposition combination of the receiver module and the speaker module, the sounding module in the scheme can reduce the number of the magnet systems, thereby being beneficial to simplifying the overall structure of the sounding module and reducing the overall thickness so as to improve the convenience of subsequent installation on the electronic equipment. Meanwhile, on the basis that the receiving unit and the loudspeaker unit share one magnetic circuit system, the first vibrating diaphragm of the receiving unit can be enclosed with the magnetic circuit system to form a first rear cavity, and the second vibrating diaphragm of the loudspeaker unit can be enclosed with the magnetic circuit system to form a second rear cavity isolated from the first rear cavity. At this time, since the first rear cavity in the receiving unit and the second rear cavity in the speaker unit are in an isolated state, the first vibrating diaphragm in the receiving unit and the second vibrating diaphragm in the speaker unit vibrate only in the first rear cavity and the second rear cavity, so that the mutual interference is avoided to cause the sound wave cancellation effect. So guaranteed that receive the operation that the unit and the unit of speaker each can be normal stable to the sound effect of sound production module has been promoted.
And through covering the communication hole of the magnetic circuit system and being provided with the isolation net, the sound-absorbing material in the expansion cavity can be isolated through the isolation net, so that the sound-absorbing material is prevented from entering the sounding unit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of one embodiment of a terminal device of the present invention;
FIG. 2 is another cross-sectional view of an embodiment of the terminal device of the present invention;
FIG. 3 is a cross-sectional view of an embodiment of a sound module according to the present invention;
FIG. 4 is a schematic diagram of a portion of the sound module of FIG. 3;
fig. 5 is a partially exploded view of the sound module of fig. 4.
Reference numerals illustrate:
| Reference numerals | Name of the name | Reference numerals | Name of the name |
| 1000 | Terminal equipment | 313 | A second side wall |
| 100 | Sounding module | 33 | Main body part |
| 10 | Magnetic circuit system | 33a | First notch |
| 10a | First magnetic gap | 50 | Receiving unit |
| 10b | Second magnetic gap | 51 | First vibrating diaphragm |
| 11 | Magnetic conduction assembly | 53 | First voice coil |
| 111 | First magnetic conductive plate | 50a | First rear cavity |
| 11a | Sounding hole | 70 | Loudspeaker unit |
| 11b | Groove | 71 | Second vibrating diaphragm |
| 11c | Second notch | 73 | Second voice coil |
| 113 | Second magnetic conductive plate | 70a | Second rear cavity |
| 13 | Magnet assembly | 90 | Frame body |
| 131 | Internal magnet | 91 | Support part |
| 133 | Middle magnet | 110 | Fixed shell |
| 135 | External magnet | 110a | First sound outlet channel |
| 135a | Side sound hole | 110b | Second sound outlet channel |
| 30 | Isolation net | 110c | Expansion cavity |
| 31 | Side portion | 300 | Casing of machine |
| 311 | First side wall | 301 | Mounting cavity |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The present invention provides a sound generating module 100, which aims to improve the sound generating effect of the sound generating module 100 and isolate the sound absorbing material from the sound generating unit.
It can be appreciated that the sounding module 100 proposed by the present invention can be applied to various small terminal devices 1000, for example: a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), an electronic book reader, an MP3 (moving picture experts compression standard audio layer 3,Moving Picture Experts Group Audio Layer III) player, an MP4 (moving picture experts compression standard audio layer 4,Moving Picture Experts Group Audio Layer IV) player, a wearable device, a navigator, a palm game machine, a virtual reality device, an augmented reality device, a desktop speaker, and the like. In addition, the sounding module 100 provided by the present invention may also be applied to various middle-or large-sized terminal devices 1000, and will not be described in detail herein.
The following will describe the specific structure of the sounding module 100 of the present invention:
Referring to fig. 1 to 5 in combination, in an embodiment of the sounding module 100 of the present invention, the sounding module 100 includes:
Including sound generating unit and dilatation chamber 110c, the sound generating unit includes: a receiving unit 50 and a speaker unit 70, wherein the speaker unit 70 is disposed opposite to the receiving unit 50;
The sound generating unit further comprises a magnetic circuit system 10, and the vibration system of the receiving unit 50 and the vibration system of the speaker unit 70 are arranged on two opposite sides of the magnetic circuit system 10;
The receiving unit 50 includes a first diaphragm 51, and a first rear cavity 50a is formed between the first diaphragm 51 and the magnetic circuit system 10; the speaker unit 70 includes a second diaphragm 71, and a second rear cavity 70a is formed between the second diaphragm 71 and the magnetic circuit system 10; the first rear chamber 50a and the second rear chamber 70a are disposed apart from each other; the second rear cavity 70a of the speaker unit 70 is communicated with the expansion cavity 110c, and the first rear cavity 50a of the receiving unit 50 is isolated from the expansion cavity 110 c;
The magnetic circuit 10 is provided with a communication hole for communicating the second rear cavity 70a with the expansion cavity 110c, and the sound generating unit further comprises an isolation net 30, wherein the isolation net 30 is covered on the communication hole and is used for isolating the sound absorbing material in the expansion cavity 110 c.
In this embodiment, when the sounding module 100 is placed horizontally, the sounding unit, the magnetic circuit system 10 and the receiving unit 50 may be stacked in sequence, at this time, a first magnetic gap 10a is formed on a side of the magnetic circuit system 10 facing the receiving unit 50, a second magnetic gap 10b is formed on a side of the magnetic circuit system 10 facing the speaker unit 70, and the first magnetic gap 10a and the second magnetic gap 10b are isolated.
Specifically, the receiver unit 50 further includes a first voice coil 53, where the first voice coil 53 is accommodated in the first rear cavity 50a, and one end of the first voice coil 53 is connected to the first diaphragm 51, and the opposite end is inserted into the first magnetic gap 10 a; similarly, the speaker unit 70 further includes a second voice coil 73, where the second voice coil 73 is accommodated in the second rear cavity 70a, and one end of the second voice coil 73 is connected to the second diaphragm 71, and the opposite end is inserted into the second magnetic gap 10 b.
Specifically, the communication holes may be arranged in a plurality, and the plurality of communication holes are sequentially arranged at intervals along the circumferential direction of the magnetic circuit system 10; correspondingly, the sound generating unit is provided with a plurality of isolation nets 30 such that each isolation net 30 is covered at one communication hole.
It can be understood that the sounding module 100 according to the present invention has the dual functions of the speaker function and the receiver function by providing the receiving unit 50 and the speaker unit 70 so that they can operate through the receiving unit 50 and the speaker unit 70, respectively. Moreover, since the receiving unit 50 and the speaker unit 70 share one magnetic circuit system 10, compared with the simple back-to-back superposition combination of the receiver module and the speaker module, the sounding module 100 in this embodiment can reduce the number of magnet systems, thereby being beneficial to simplifying the overall structure of the sounding module 100 and reducing the overall thickness to improve the convenience of installing the sounding module on the electronic device. Meanwhile, on the basis that the receiving unit 50 and the speaker unit 70 share one magnetic circuit system 10, the first diaphragm 51 of the receiving unit 50 may enclose with the magnetic circuit system 10 to form a first rear cavity 50a, and the second diaphragm 71 of the speaker unit 70 may enclose with the magnetic circuit system 10 to form a second rear cavity 70a isolated from the first rear cavity 50 a. At this time, since the first rear cavity 50a in the receiver unit 50 and the second rear cavity 70a in the speaker unit 70 are in an isolated state, the first diaphragm 51 in the receiver unit 50 and the second diaphragm 71 in the speaker unit 70 vibrate only in the first rear cavity 50a and the second rear cavity 70a, respectively, so that they will not interfere with each other to cause the sound wave cancellation effect. Thus, the receiving unit 50 and the speaker unit 70 can work normally and stably, thereby improving the sound producing effect of the sound producing module 100.
And, by providing the isolation net 30 at the communication hole of the magnetic circuit system 10, the sound absorbing material in the expansion chamber 110c can be isolated by the isolation net 30, so as to prevent the sound absorbing material from entering the sound generating unit.
In other words, the sounding module 100 provided in the present embodiment has at least the following advantages:
Firstly, the receiving unit 50 and the speaker unit 70 in the novel sounding module 100 provided in the present embodiment share one magnetic circuit system 10, so that compared with the simple back-to-back superposition combination of the receiver module and the speaker module, the sounding module 100 in the present embodiment can reduce the number of the magnet systems, thereby being beneficial to simplifying the overall structure of the sounding module 100 and reducing the overall thickness to improve the convenience of installing the sounding module on the electronic device;
Secondly, the receiving unit 50 and the speaker unit 70 adopt separate designs, so that requirements of the acoustic device under different use situations can be better met, for example, a stereo effect in a speaker external playing mode can be improved, or two sound waves with opposite phases are emitted based on a sound dipole effect to offset and attenuate so as to achieve a privacy protection effect in a receiver communication mode;
Thirdly, by the novel sounding module 100 scheme provided in this embodiment, the first diaphragm 51 in the receiving unit 50 and the second diaphragm 71 in the speaker unit 70 vibrate only in the first rear cavity 50a and the second rear cavity 70a respectively, so that the mutual interference is avoided to cause the sound wave cancellation effect, and the normal and stable operation of each of the receiving unit 50 and the speaker unit 70 is ensured;
Fourth, according to the novel sounding module 100 provided in this embodiment, by filling the sound absorbing material in the expansion cavity 110c of the sounding module 100 and enabling the expansion cavity 110c to be communicated with the second rear cavity 70a of the speaker unit 70 through the communication hole on the magnetic circuit system 10, the low-frequency strength of the speaker unit 70 can be improved, and meanwhile, by covering the communication hole of the magnetic circuit system 10 with the isolation net 30, the sound absorbing material in the expansion cavity 110c can be isolated, so as to avoid the sound absorbing material in the expansion cavity 110c from entering the sounding unit;
Fifth, the novel sounding module 100 provided in the present embodiment is also beneficial to realize the coaxial design of the receiving unit 50 and the speaker unit 70, so that the phenomenon of channel separation is avoided, and the subjective listening experience is better.
Further, referring to fig. 1 to 3 and 5 in combination, in an embodiment of the sound generating module 100 of the present invention, the magnetic circuit system 10 includes:
The magnetic conduction assembly 11, wherein the magnetic conduction assembly 11 comprises a first magnetic conduction plate 111 and a second magnetic conduction plate 113, and the first magnetic conduction plate 111 and the second magnetic conduction plate 113 are arranged at opposite intervals; and
The magnet assembly 13, the magnet assembly 13 is disposed between the first magnetic conductive plate 111 and the second magnetic conductive plate 113, the magnet assembly 13 includes an inner magnet 131, a middle magnet 133 and an outer magnet 135, the middle magnet 133 surrounds the outer side of the inner magnet 131 and is disposed at a distance from the inner magnet 131 to form a first magnetic gap 10a of the receiving unit 50, and the outer magnet 135 surrounds the outer side of the middle magnet 133 and is disposed at a distance from the middle magnet 133 to form a second magnetic gap 10b of the speaker unit 70.
In this embodiment, the first magnetic conductive plate 111 has a first through hole at a position corresponding to the first magnetic gap 10a, the first diaphragm 51 can be smoothly inserted into the first magnetic gap 10a through the first through hole, the second magnetic conductive plate 113 has a second through hole at a position corresponding to the second magnetic gap 10b, and the second diaphragm 71 can be smoothly inserted into the second magnetic gap 10b through the second through hole.
The first magnetic conductive plate 111 may not be provided with an opening at a position corresponding to the second magnetic gap 10b, so that the second magnetic gap 10b is prevented from being communicated with the first magnetic gap 10a or the first rear cavity 50a through the opening on the first magnetic conductive plate 111; of course, the first magnetic conductive plate 111 may also be provided with an opening at a position corresponding to the second magnetic gap 10b, i.e., the communication hole mentioned in the above embodiment, but the opening is not in communication with the first magnetic gap 10a or the first rear cavity 50a, so as to avoid that the second magnetic gap 10b is in communication with the first magnetic gap 10a or the first rear cavity 50a through the opening on the first magnetic conductive plate 111. In addition, the second magnetic conductive plate 113 is not provided with an opening at a position corresponding to the first magnetic gap 10a, so as to avoid the first magnetic gap 10a from being communicated with the second magnetic gap 10b or the second rear cavity 70a through the opening on the second magnetic conductive plate 113.
So arranged, under the design of the embodiment, the first magnetic gap 10a and the second magnetic gap 10b are all in ring-shaped arrangement, and the arrangement of the first gap and the second magnetic gap 10b is sleeved with an outer ring relative to the outer side of the inner ring, namely, the two are nested in the horizontal direction; in this way, the width of the magnetic circuit system 10 can be fully utilized to reduce the height of the magnetic circuit system 10, so that the axial dimension of the sound generating module 100 is reduced to better adapt to various small terminal devices 1000.
Further, referring to fig. 4 and 5 in combination, in an embodiment of the sounding module 100 of the present invention, the external magnet 135 is provided with a side sound hole 135a, the first magnetic conductive plate 111 is provided with a sound hole 11a, and the side sound hole 135a and the sound hole 11a form the communication hole; the isolation net 30 includes a main body 33 and a side portion 31, wherein the main body 33 is covered on the sound outlet 11a, and the main body 33 is provided with meshes corresponding to the sound outlet 11a, the side portion 31 is covered on the side sound outlet 135a, and the side portion 31 is provided with meshes corresponding to the side sound outlet 135 a.
In this embodiment, when the sounding module 100 is horizontally placed, the first magnetic conductive plate 111 is located above the magnet assembly 13, the side acoustic hole 135a of the external magnet 135 extends along the direction from the center of the magnet assembly 13 to the outer edge so as to penetrate to the outer edge of the external magnet 135 to be communicated with the second rear cavity 70a through the second magnetic gap 10b, and the sound emitting hole 11a of the first magnetic conductive plate 111 penetrates from the top surface to the bottom surface of the first magnetic conductive plate 111 to be communicated with the second rear cavity 70a through the second magnetic gap 10 b; the main body 33 of the spacer mesh 30 is disposed above the first magnetic conductive plate 111 and covers the sound outlet hole 11a, and the side 31 of the spacer mesh 30 is disposed laterally of the external magnet 135 and covers the side sound outlet hole 135 a.
With this arrangement, under the design of the present embodiment, by providing the side acoustic holes 135a and the acoustic holes 11a on the external magnet 135 and the first magnetic conductive plate 111, the second rear cavity 70a is simultaneously connected to the capacity expansion cavity 110c through the side acoustic holes 135a and the acoustic holes 11a, so as to sufficiently provide the space for enhancing the sound for the second rear cavity 70a, thereby effectively improving the low-frequency intensity, and further improving the sound production effect; meanwhile, by covering the side portion 31 and the main body portion 33 of the isolation net 30 at the side sound hole 135a and the sound outlet hole 11a, respectively, the sound absorbing material in the expansion chamber 110c can be isolated by the side portion 31 and the main body portion 33.
Further, referring to fig. 1 to 5 in combination, in an embodiment of the sound generating module 100 of the present invention, the sound generating unit further includes a frame 90, the frame 90 is disposed on a side of the second magnetic conductive plate 113 away from the first magnetic conductive plate 111, and the second diaphragm 71 is fixed to the frame 90 and encloses the frame 90 and the magnetic circuit system 10 to form the second rear cavity 70a;
The support body 90 has a support portion 91 on a side facing away from the second diaphragm 71, the support portion 91 extends into the side acoustic hole 135a to divide the side acoustic hole 135a into a first acoustic hole and a second acoustic hole, the side portion 31 includes a first side wall 311 and a second side wall 313, the first side wall 311 is covered on the first acoustic hole, and the first side wall 311 is provided with a mesh at a position corresponding to the first acoustic hole, the second side wall 313 is covered on the second acoustic hole, and the second side wall 313 is provided with a mesh at a position corresponding to the second acoustic hole.
By fixing the second diaphragm 71 of the speaker unit 70 to the frame 90, the mounting stability of the speaker unit 70 can be ensured by the frame 90, so as to avoid influencing the sounding effect due to position deviation in the working process; in addition, through being provided with supporting part 91 on support body 90, alright carry out spacingly to first magnetic conduction board 111 and isolation net 30 through supporting part 91 for sounding module 100's wholeness is better, the reliability is higher.
Further, referring to fig. 4 and 5 in combination, in an embodiment of the sounding module 100 of the present invention, the first sound hole is located on the short axis side of the external magnet 135, and the second sound hole is located on the long axis side of the external magnet 135.
In the present embodiment, the support portion 91 of the frame 90 is provided at the junction of the short axis side and the long axis side of the external magnet.
By arranging in this way, the first sound hole and the second sound hole in the communication hole are located on the short axis side and the long axis side of the external magnet, respectively, so that the second rear chamber 70a is communicated with the uniformity of the expansion chamber 110c through the communication hole, thereby ensuring the uniformity of sound wave transmission, and further improving the sound production effect.
Further, referring to fig. 5 in combination, in an embodiment of the sound module 100 of the present invention, the main body 33 is provided with a first notch 33a adapted to the supporting portion 91, and the supporting portion 91 is at least partially disposed in the first notch 33 a.
In this embodiment, the first notch 33a is disposed at the outer edge of the main body 33, i.e., the first notch 33a is recessed inward from the outer edge of the main body 33.
By arranging the support portion 91 of the frame 90 at least partially in the first notch 33a of the main body 33, the outer edge of the support portion 91 is abutted against the inner wall of the first notch 33a, the main body 33 can be limited and fixed by the support portion 91, and the isolation net 30 can be limited and fixed, so that the installation reliability of the isolation net 30 is higher.
Similarly, the first magnetic conductive plate 111 is provided with a second notch 11c adapted to the supporting portion 91, and the supporting portion 91 is at least partially disposed in the second notch 11 c.
In this embodiment, the second notch 11c is disposed at the outer edge of the first magnetic conductive plate 111, that is, the second notch 11c is recessed inward from the outer edge of the first magnetic conductive plate 111.
By arranging the support portion 91 of the frame 90 at least partially in the second notch 11c of the first magnetic conductive plate 111, the outer edge of the support portion 91 is abutted against the inner wall of the second notch 11c, and the first magnetic conductive plate 111 can be limited and fixed by the support portion 91, so that the first magnetic conductive plate 111 is limited and fixed, and the mounting reliability of the first magnetic conductive plate 111 is higher.
Further, referring to fig. 5 in combination, in an embodiment of the sound generating module 100 of the present invention, a side of the first magnetic conductive plate 111 facing away from the second magnetic conductive plate 113 has a groove 11b, the sound emitting hole 11a penetrates through a bottom of the groove 11b, and the main body 33 is at least partially installed in the groove 11 b.
In this embodiment, the groove 11b is formed by recessing inward on the side of the first magnetic conductive plate 111 facing away from the second magnetic conductive plate 113, the groove 11b is spaced from the first rear cavity 50a and located outside the first rear cavity 50a, and the groove 11b penetrates to the outer edge of the first magnetic conductive plate 111.
So set up, through installing the cylinder part of isolation net 30 at least partly in recess 11b, alright utilize the height of first magnetic conduction board 111 self for isolation net 30 does not occupy the height of whole sound production module 100, thereby can reduce the whole height of sound production module 100, simultaneously, still accessible recess 11b carries out spacing fixed to isolation net 30, in order to guarantee the installation reliability of isolation net 30.
Further, referring to fig. 4 and 5 in combination, in an embodiment of the sound module 100 of the present invention, the isolation net 30 is a metal net; the metal mesh can ensure the hardness of the isolation mesh 30 and facilitate the formation of a specific structure, and also can enable the external magnet 135 to have a magnetic conduction effect through the metal isolation mesh 30.
Further, defining the thickness of the isolation net 30 as D, the condition is satisfied: d is more than or equal to 0.05mm; by the arrangement, the thickness of the isolation net 30 is prevented from being too large to influence the overall height of the sounding module 100 while the isolation net 30 is ensured to have enough hardness.
Further, defining the pore diameter of the mesh in the separation net 30 as R, the condition is satisfied: r is more than or equal to 0.08mm and less than or equal to 0.15mm; by this arrangement, the second rear cavity 70a can be ensured to be smoothly communicated with the expansion cavity 110c through the mesh openings on the isolation net 30, so as to ensure the stability of air flow, and meanwhile, the sound absorbing material in the expansion cavity 110c is prevented from being introduced into the sound generating unit through the mesh openings when the aperture of the mesh openings in the isolation net 30 is overlarge, so that the vibration of the second voice coil 73 and the second vibrating diaphragm 71 is prevented from being influenced.
Further, the isolation net 30 is adhered to the magnetic circuit system 10; by adhering the isolation net 30 to the magnetic circuit system 10, the installation stability of the isolation net 30 can be ensured, so as to prevent the isolation net 30 from sounding position deviation and influence the isolation effect of the sound absorbing material in the expansion cavity 110 c.
Further, referring to fig. 1 to 3 in combination, in an embodiment of the sound generating module 100 of the present invention, the sound generating module 100 further includes a fixed housing 110, the fixed housing 110 fixes the sound generating unit, and the expansion cavity 110c is formed between the fixed housing 110 and the sound generating unit in a surrounding manner; the expansion chamber 110c is provided with a sound absorbing material, and the isolation net 30 is used for isolating the sound absorbing material.
In this embodiment, the receiving unit 50 is provided with a first sound emitting channel 110a, the first sound emitting channel 110a is communicated with an external space of the sound emitting module 100, the fixed housing 110 is provided with an avoidance structure for avoiding the first sound emitting channel 110a, so that an external channel is formed by surrounding an external side wall of the receiving unit 50 and an inner wall of the avoidance structure, and the external channel is isolated from an internal space of the fixed housing 110 and is communicated with the first rear cavity 50a and the external space of the sound emitting module 100, for example, when the sound emitting module 100 of this embodiment is applied to the terminal device 1000, the first rear cavity 50a can be communicated with the installation cavity 301 of the housing 300 in the terminal device 1000 through the external channel, so as to provide a sound enhancement space for the first rear cavity 50a of the receiving unit 50, thereby effectively improving low-frequency intensity.
In addition, the fixed housing 110 is provided with a second sound outlet passage 110b at a position corresponding to the second diaphragm 71, and an outlet of the second sound outlet passage 110b penetrates through a side circumferential surface of the fixed housing 110.
So set up, through fixing the sound generating unit in fixed shell 110, alright guarantee the installation stability of sound generating unit for the wholeness of sound generating module 100 is better, the reliability is higher, still can make enclosing between fixed shell 110 and the sound generating unit and be formed with dilatation chamber 110c, alright fill sound absorbing material in dilatation chamber 110c, in order to promote the low frequency of speaker unit 70.
And, the expansion chamber 110c is isolated from the first rear chamber 50a and communicates with the second rear chamber 70 a; it should be noted that, the first rear chamber 50a and the expansion chamber 110c are isolated as follows: the isolation of the first rear cavity 50a from the expansion cavity 110c refers to that no communication structure directly connecting the first rear cavity 50a and the expansion cavity 110c exists in the self structure of the sound generating module 100.
In general, the pressure relief hole (or pressure equalizing hole, or leakage hole) for equalizing pressure may be disposed on the expansion chamber 110c, and the pressure relief hole may guide a part of the air flow in the expansion chamber 110c to the outside/terminal, and the air flow in the first rear chamber 50a may also be directly guided to the outside/terminal, but the pressure relief hole at this time is not a communication structure for communicating the first rear chamber 50a with the expansion chamber 110c, for the following reasons:
1. The technical problem to be solved by the application is the problem of air flow interference caused when two sets of vibration systems are communicated with the rear cavity, and the scheme of communicating through the pressure relief hole obviously does not have the problem of air flow interference, and the scheme of communicating the two sets of vibration systems with the rear cavity, which is mentioned in the background section of the application, but the scheme of isolating the first rear cavity 50a from the expansion cavity 110c after the improvement of the application;
2. The pressure release hole of the rear cavity has the function of pressure equalizing, and is used for realizing micro communication between the air pressure in the expansion cavity 110c and the external air pressure, and in order not to influence the hearing sensitivity, a damping mesh cloth is required to be bonded at the pressure equalizing hole to provide certain acoustic resistance; the communication hole on the frame body for fixing the first diaphragm 51 needs to realize smooth communication between the first rear cavity 50a and the external air flow, and no damping mesh cloth is needed; it can be seen that the pressure equalizing holes and the communication holes of the present application themselves also play different roles.
Referring to fig. 1 and 2 in combination, the present invention further proposes a terminal device 1000, where the terminal device 1000 includes a housing 300 and a sounding module 100 as described above, and the specific structure of the sounding module 100 refers to the foregoing embodiment. Since the present terminal device 1000 adopts all the technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by all the technical solutions of all the foregoing embodiments are not described in detail herein. Wherein, the housing 300 is formed with a mounting cavity 301 therein; the sound generating module 100 is disposed in the mounting cavity 301.
It is understood that terminal device 1000 can be, but is not limited to, a cell phone, tablet, television, display, notebook, digital photo frame, personal digital assistant (Personal DIGITAL ASSISTANT, PDA), electronic book reader, MP3 (moving picture experts compression standard audio layer 3,Moving Picture Experts Group Audio Layer III) player, MP4 (moving picture experts compression standard audio layer 4,Moving Picture Experts Group Audio Layer IV) player, wearable device, navigator, palm game, virtual reality device, augmented reality device, desktop speakers, etc.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (8)
1. The utility model provides a sound production module, its characterized in that includes sound production unit and dilatation chamber, sound production unit includes: the loudspeaker unit is arranged opposite to the receiving unit;
The sound generating unit further comprises a magnetic circuit system, and the vibration system of the receiving unit and the vibration system of the loudspeaker unit are arranged on two opposite sides of the magnetic circuit system;
The receiving unit comprises a first vibrating diaphragm, and a first rear cavity is formed between the first vibrating diaphragm and the magnetic circuit system; the loudspeaker unit comprises a second vibrating diaphragm, and a second rear cavity is formed between the second vibrating diaphragm and the magnetic circuit system; the first rear cavity and the second rear cavity are arranged in a separated mode; the second rear cavity of the loudspeaker unit is communicated with the expansion cavity, and the first rear cavity of the receiving unit is isolated from the expansion cavity;
The magnetic circuit system is provided with a communication hole for communicating the second rear cavity and the expansion cavity, the sound generating unit further comprises an isolation net, and the isolation net is covered on the communication hole and is used for isolating sound-absorbing materials in the expansion cavity;
The magnetic circuit system includes:
the magnetic conduction assembly comprises a first magnetic conduction plate and a second magnetic conduction plate, and the first magnetic conduction plate and the second magnetic conduction plate are arranged at opposite intervals; and
The magnet assembly is arranged between the first magnetic conduction plate and the second magnetic conduction plate, the magnet assembly comprises an inner magnet, a middle magnet and an outer magnet, the middle magnet surrounds the outer side of the inner magnet and is arranged at intervals with the inner magnet to form a first magnetic gap of the receiving unit, and the outer magnet surrounds the outer side of the middle magnet and is arranged at intervals with the middle magnet to form a second magnetic gap of the loudspeaker unit;
The external magnet is provided with a side sound hole, the first magnetic conduction plate is provided with a sound outlet, and the side sound hole and the sound outlet form the communication hole;
the isolation net comprises a main body part and a side part which are connected, the main body part is covered on the sound outlet, meshes are arranged at the positions of the main body part corresponding to the sound outlet, the side part is covered on the side sound outlet, and meshes are arranged at the positions of the side part corresponding to the side sound outlet.
2. The sound generating module as claimed in claim 1, wherein the sound generating unit further comprises a frame body, the frame body is arranged at one side of the second magnetic conduction plate away from the first magnetic conduction plate, the second vibrating diaphragm is fixed on the frame body, and the second vibrating diaphragm, the frame body and the magnetic circuit system are enclosed to form the second rear cavity;
One side of the frame body, which deviates from the second vibrating diaphragm, is provided with a supporting part, the supporting part stretches into the side sound hole to divide the side sound hole into a first sound hole and a second sound hole, the side part comprises a first side wall and a second side wall, the first side wall covers the first sound hole, meshes are arranged at the position, corresponding to the first sound hole, of the first side wall, the second side wall covers the second sound hole, and meshes are arranged at the position, corresponding to the second sound hole, of the second side wall.
3. The sound emitting module of claim 2, wherein the first sound hole is located on a short axis side of the external magnet and the second sound hole is located on a long axis side of the external magnet.
4. The sound generating module set according to claim 2, wherein the main body part is provided with a first notch matched with the supporting part, and the supporting part is at least partially arranged in the first notch;
and/or, the first magnetic conduction plate is provided with a second gap matched with the supporting part, and the supporting part is at least partially arranged in the second gap.
5. The sound generating module as claimed in claim 1, wherein a groove is formed on a side of the first magnetic conductive plate facing away from the second magnetic conductive plate, the sound generating hole penetrates through a bottom of the groove, and the main body is at least partially installed in the groove.
6. The sound emitting module of any one of claims 1-5, wherein the isolation mesh is a metal mesh;
And/or defining the thickness of the isolation net as D, and meeting the condition: d is more than or equal to 0.05mm;
and/or defining the aperture of the mesh hole in the isolation net as R, and meeting the condition: r is more than or equal to 0.08mm and less than or equal to 0.15mm;
and/or the isolation net is adhered to the magnetic circuit system.
7. The sound generating module according to any one of claims 1 to 5, further comprising a fixed housing, wherein the sound generating unit is fixed by the fixed housing, and the expansion cavity is formed between the fixed housing and the sound generating unit in a surrounding manner; and sound absorbing materials are arranged in the expansion cavity, and the isolation net is used for isolating the sound absorbing materials.
8. A terminal device, comprising:
A housing in which an installation cavity is formed;
the sound emitting module of any one of claims 1-7 disposed within the mounting cavity.
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| CN202210346965.0A CN114866915B (en) | 2022-04-02 | 2022-04-02 | Sounding module and terminal equipment |
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| CN202210346965.0A CN114866915B (en) | 2022-04-02 | 2022-04-02 | Sounding module and terminal equipment |
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| CN114866915A CN114866915A (en) | 2022-08-05 |
| CN114866915B true CN114866915B (en) | 2024-07-30 |
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| JP4147311B2 (en) * | 2001-03-21 | 2008-09-10 | オンキヨー株式会社 | speaker |
| JP4939999B2 (en) * | 2007-04-06 | 2012-05-30 | 株式会社オーディオテクニカ | Diaphragm for dynamic microphone, manufacturing method thereof, and dynamic microphone |
| CN202799109U (en) * | 2012-07-20 | 2013-03-13 | 瑞声光电科技(常州)有限公司 | Loudspeaker making sound from side |
| WO2018187663A1 (en) * | 2017-04-07 | 2018-10-11 | Correlated Magnetics Research, Llc | Loudspeaker magnet and earphone assembly |
| CN111698621B (en) * | 2019-03-14 | 2023-04-07 | 歌尔股份有限公司 | Sound production device and electronic product |
| CN212324354U (en) * | 2020-06-02 | 2021-01-08 | 维沃移动通信有限公司 | Loudspeaker module and electronic equipment |
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| CN109040920A (en) * | 2018-07-26 | 2018-12-18 | 维沃移动通信有限公司 | A kind of vocal structure and terminal |
| CN111935592A (en) * | 2020-09-21 | 2020-11-13 | 歌尔股份有限公司 | Sound production module |
| CN114268889A (en) * | 2021-12-14 | 2022-04-01 | 歌尔科技有限公司 | Speaker and electronic apparatus |
| CN114449422A (en) * | 2022-01-30 | 2022-05-06 | 歌尔科技有限公司 | Speaker and electronic apparatus |
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