CN110418258B - Sound producing device - Google Patents
Sound producing device Download PDFInfo
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- CN110418258B CN110418258B CN201810719255.1A CN201810719255A CN110418258B CN 110418258 B CN110418258 B CN 110418258B CN 201810719255 A CN201810719255 A CN 201810719255A CN 110418258 B CN110418258 B CN 110418258B
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- voice coil
- sound generating
- electrical connection
- generating device
- centering
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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
- H04R9/04—Construction, mounting, or centering of coil
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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
- H04R9/06—Loudspeakers
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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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention discloses a sound production device. This sound generating mechanism includes: the voice coil is formed by winding two voice coil wires, four lead ends are led out, and the vibrating diaphragm is connected to one side of the voice coil; the two centering branch pieces are provided with conductive circuits for realizing the connection of the voice coil and an external circuit, each centering branch piece is provided with a floating part and a fixed part, the floating part is connected to the other side of the voice coil opposite to the vibrating diaphragm, the two centering branch pieces are distributed in a centrosymmetric mode relative to the center of the voice coil, and the fixed parts are fixed on the sound generating device; two electrical connection points are formed on each floating part, and four lead terminals on the voice coil are respectively connected to the four electrical connection points in a one-to-one correspondence mode.
Description
Technical Field
The invention belongs to the technical field of electroacoustic transduction, and particularly relates to a sound production device.
Background
A sound generating device is an important acoustic component in electronic equipment, which is a transducer device that converts an electrical signal into an acoustic signal. The conventional sound generating apparatus includes a housing, and a magnetic circuit system and a vibration component disposed in the housing.
The moving-coil sound generating device is widely applied to consumer electronic products, and the working mode of the moving-coil sound generating device can meet the requirements of a loudspeaker and a receiver of the electronic products. However, due to the structural characteristics of the moving-coil sound generating device, the problems of polarization of the voice coil and the diaphragm and the connection of the lead of the voice coil are difficult to solve. Moreover, with the gradual development of electronic products, the power of the sound generating device is required to be higher, and the risk of wire breakage of the voice coil is increased.
In the existing moving-coil type sounding device, the traditional single-coil voice coil has low intermediate frequency performance, and the performance development requirement of the sounding device can not be met gradually. And the double-in double-out type voice coil has higher risk of wire breakage under the condition of generating larger displacement. Especially in the case of polarization of the voice coil, disconnection of the voice coil is more likely to occur. Once the voice coil is disconnected, the sound generating device cannot be used continuously, and the maintenance is difficult.
It is apparent that the existing voice coil structure or sound generating device structure cannot meet the requirement of improving the performance of products, and the existing sound generating device needs to be improved.
Disclosure of Invention
One object of the present invention is to provide a new solution for a sound generating device.
According to a first aspect of the present invention, there is provided a sound emitting apparatus comprising:
the voice coil is formed by winding two voice coil wires, four lead ends are led out, and the vibrating diaphragm is connected to one side of the voice coil;
the two centering branch pieces are provided with conductive circuits for realizing the connection of the voice coil and an external circuit, each centering branch piece is provided with a floating part and a fixed part, the floating part is connected to the other side of the voice coil opposite to the vibrating diaphragm, the two centering branch pieces are distributed in a centrosymmetric mode relative to the center of the voice coil, and the fixed parts are fixed on the sound generating device;
two electrical connection points are formed on each floating part, and four lead terminals on the voice coil are respectively connected to the four electrical connection points in a one-to-one correspondence mode.
Optionally, the sound generating device further comprises two conducting wires, wherein the two conducting wires are respectively connected with two first ends of the centering branch piece located on the first side and two second ends of the centering branch piece located on the second side.
Optionally, the sound generating device has two pads, two the pad forms on the fixed part, one the pad forms the electricity with two electricity connecting point and is connected, another one the pad forms the electricity with two other electricity connecting point and is connected, the pad exposes on sound generating device's the surface.
Optionally, the two pads are formed on the same fixing portion of the centering branch piece.
Optionally, the two pads are formed on the fixing portions of the two centering branch pieces respectively.
Optionally, one of the pads is electrically connected with one of the electrical connection points on the centering branch sheet where the pad is located, and is electrically connected with one of the electrical connection points on the other centering branch sheet through one of the conductive wires;
and the other branch of the bonding pad is electrically connected with the other electric connection point on the centering branch sheet on which the other branch of the bonding pad is positioned, and is electrically connected with the other electric connection point on the other centering branch sheet through the other branch of the through wire.
Optionally, a conductive portion is disposed on the centering tab and near the electrical connection point, and an end of the conductive wire is welded to the conductive portion.
Optionally, each centering branch piece is provided with two fixing parts and a strip-shaped floating part, the two fixing parts are respectively distributed at positions, close to two ends, of the strip-shaped floating part, and an elastic part is connected between the fixing parts and the floating part.
Optionally, the elastic part is a strip-shaped structure extending in an S-shaped bending manner;
or the elastic part is a sheet-shaped arc-shaped bulge structure extending from the fixed part to the floating part, and the bulge direction of the sheet-shaped arc-shaped bulge structure faces the vibrating diaphragm or is far away from the vibrating diaphragm;
alternatively, the elastic portion has a sheet-like wavy structure extending from the fixed portion to the floating portion.
Optionally, each of the four fixing portions has a pad electrically connected to an adjacent one of the electrical connection points, and the pad is exposed on the outer surface of the sound generating device.
Optionally, the voice coil loudspeaker voice coil is the rectangle structure, two the unsteady portion of centering piece is attached respectively on two short sides of voice coil loudspeaker voice coil.
Optionally, the conducting lines extend in a direction parallel to the long sides of the voice coil, the two conducting lines are located on the peripheries of the two long sides of the voice coil respectively, and the conducting lines are arranged on a magnetic circuit system or a casing of the sound generating device.
Optionally, the incoming line ends and the outgoing line ends of the two voice coil wires serve as four lead ends, the two incoming line ends are centrally symmetrically distributed relative to the center of the voice coil, the two outgoing line ends are centrally symmetrically distributed relative to the center of the voice coil, and the incoming line ends and the outgoing line ends are symmetrically distributed relative to the center line of the voice coil.
Optionally, the two voice coil wires are connected in parallel to the circuit.
According to one embodiment of the present disclosure, the possibility of polarization of the voice coil can be reduced.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is an exploded view of a portion of the components of a sound generator provided by the present invention;
FIG. 2 is a schematic top view of a centering pad and a via of the sound generating device of the present invention;
FIG. 3 is a schematic top view of a voice coil provided in the present invention;
fig. 4 is a schematic top view of the spider and the voice coil of the present invention after assembly.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The invention provides an improved sound generating device, which comprises a vibrating diaphragm 1, a voice coil 2 and two centering support pieces 3, as shown in figure 1. The two centering support pieces 3 are internally provided with a conductive circuit for electrically connecting the voice coil 2 with external circuits such as a mobile phone complete machine and the like. As shown in fig. 2, the damper 3 has a floating portion 31 and a fixing portion 32, the diaphragm 1 is attached to one side surface of the voice coil 2, the floating portion 31 of the damper 3 is attached to the other side surface of the voice coil 2, and the floating portion 31 and the diaphragm 1 sandwich the voice coil 2. The fixing portion 32 is fixedly provided in the sound emitting device. When the sound generating device works, the diaphragm 1 and the voice coil 2 can vibrate. In this case, the floating portion 31 can vibrate together with the voice coil 2 and the diaphragm 1, and the fixed portion 32 is fixed to the sound generating device and does not vibrate therewith. The centering chip 3 is disposed so that a certain amount of relative displacement can be generated between the floating portion 31 and the fixed portion 32.
The two centering fins 3 are distributed in a manner of being centrosymmetric with respect to the center of the voice coil 2. In this way, the two centering fins 3 can support the voice coil 2 from two positions symmetrical with respect to the voice coil 2, and can restrict the vibration direction and amplitude. Through this kind of design, can effectively reduce the possibility that voice coil 2 produced polarization when working. Fig. 4 specifically shows a structure form of the voice coil 2 and the damper 3 after assembly, and it can be seen that the two dampers 3 are distributed in a central symmetry manner with respect to the center of the voice coil 2.
Furthermore, the voice coil is formed by winding two voice coil wires, and four lead terminals 21 are led out from the voice coil. Four lead terminals 21 are used to connect to the signal circuit, so that the voice coil is connected to the complete sound signal loop. Fig. 3 shows a top view of the voice coil 2, and it can be seen that four lead terminals 21 are led out from the voice coil 2. The four lead terminals 21 can be the incoming terminal 211 and the outgoing terminal 212 of the two voice coil wires, respectively. Two electrical connection points 311 are formed on each of the floating portions 31, and there are four electrical connection points 311 provided by the floating portion 31 of the centering leg 3 in total in the entire sound emitting device. The four lead terminals 21 on the voice coil 2 are respectively connected to the four electrical connection points 311 in a one-to-one correspondence manner, as shown in fig. 4. In this embodiment of the present invention, the lead terminals 21 of the voice coil 2 need not be connected to pads or electrical connections on the housing of the sound generating device via a long flying extension. As shown in fig. 4, the lead terminal 21 has a relatively short length, and may be directly connected to an electrical connection point 311 located on the floating portion 31. When the voice coil 2 vibrates, the electrical connection point 311 carried by the floating portion 31 also vibrates together. Thus, the lead terminals are not affected by vibration at all, and do not exert a pulling force on the voice coil. The risk of the broken wire of the lead wire end is greatly reduced compared with the traditional moving coil type sounding device.
In the embodiment of the present invention, the damper is provided in a central symmetry, and the lead end of the voice coil is connected to the floating portion of the damper, thereby simplifying the structure of the vibration unit in the sound generating apparatus as a whole. The stability of the whole acoustic performance of the sound generating device can be improved.
Optionally, as shown in fig. 1 and 2, the sound generating device may further include two conducting wires 4. The two conducting wires 4 form an electrical connection between the two centering branch pieces 3 respectively. The circuit in the two centering branch pieces can be connected together by the implementation mode, the circuit form that the centering branch pieces can be combined is increased, and the applicability of the sound generating device is improved, so that the sound generating device can be suitable for various signal circuit wiring requirements. Preferably, one of the conductive wires 4 electrically connects two first ends of the two centring disk 3 on the first side; another lead-through 4 electrically connects the two second ends of the two centring disk 3 on the second side. Thus, the two centering branch pieces 3 and the two conducting wires 4 are sequentially connected into a ring at intervals and in an end-to-end mode, and the whole structure shape of the moving-coil type sounding device is adapted. Fig. 4 shows a specific structure of the above embodiment. The first side may be an upper side in fig. 4, and upper ends (first ends) of the two centering fins 3 are connected via a communication line 4; the second side may be a lower side in fig. 4, and lower ends (second ends) of the two centering fins 3 are connected via another communication line 4.
Optionally, the sound generating device further includes two bonding pads 321, and the two bonding pads 321 are used for forming electrical connection with other external circuits such as the whole mobile phone. The pads 321 are exposed from the outer surface of the sound emitting device to make connection with an external circuit. As shown in fig. 2, two pads 321 are formed on the fixed portion 32, and the electrical connection point 311 on the floating portion 31 is electrically connected to the pads 321 through a circuit inside the centering pad. Wherein, two of the electrical connection points 311 are electrically connected with one of the pads 321; the other two electrical connection points 311 are electrically connected to the other branch pads 321. Through the structural design, the four electrical connection points can be electrically connected with an external circuit in a group of two electrical connection points, so that the voice coil is connected into a signal loop. The invention does not limit which two electrical connection points are electrically connected with which bonding pad, and can be designed according to the actual product requirement.
Alternatively, as shown in fig. 2 and 4, two pads 321 may be formed on the fixing portion 32 of the same centering pad 3, and the other centering pad 3 does not have the pad 321. The electrical connection points 311 on the spider 3 without the pads 321 are electrically connected to the pads 321 by the circuitry within the spider 3 and the conductive lines 4.
Alternatively, in another embodiment, two pads may be formed on the fixing portions of two centering branch pieces, respectively. I.e. one on each centring disk. (not shown in the figure)
The invention provides a specific embodiment of the electric connection between the electric connection points and the bonding pads for various distribution forms of the bonding pads and the electric connection points. The present invention is not limited to this embodiment, however, and other circuit connections may be implemented, and those skilled in the art may select the circuit connections according to the specific circuit connection requirements.
First, the first support pad is electrically connected with the electrical connection point on the centering branch sheet where the first support pad is located. Further, the conductive wire is electrically connected with one electrical connection point on the other centering disk through one conductive wire.
Then, the second branch bonding pad is electrically connected with the electric connection point on the centering branch sheet. If both pads are arranged on the same centering branch piece, the second pad is connected with an electric connection point which is not electrically connected with the first pad; if the two pads are arranged on different centering fins, the second pad is connected with another electric connection point on the centering fin where the second pad is not electrically connected with the first pad. Further, the second branch bonding pad is also connected with an electric connection point which is not electrically connected with the first bonding pad on the other centering branch sheet through another branch conducting wire.
Through the design, every two of the four electric connection points are in one group and are respectively and electrically connected with the two bonding pads. The circuits and signals between the two groups of electric connection points are not interfered with each other.
Optionally, the centering branch piece 3 may further be provided with a conductive portion 322, as shown in fig. 2 and 4, where the conductive portion 322 is used for electrically connecting with a conductive wire. The conductive portion 322 may communicate with the circuit inside the spider 3 itself, so as to realize the electrical connection between the pads 321 and the electrical connection points 311. Preferably, the electrical connection is located on the spider near the electrical connection point 311. On one hand, the space can be saved, and the physique of the centering branch piece can be reduced; on the other hand, the conductive part can be directly electrically connected with the adjacent electric connection point, so that circuit wiring in the centering branch sheet is convenient to realize. The end of the conductive line may be welded to the conductive portion.
Alternatively, the conductive portion 322 may be located on the fixing portion 32, as shown in fig. 2. Thus, the conductive portion 322 and the via 4 do not vibrate with the floating portion 31, and the reliability of the point connection is improved.
As for the structural shape of the damper 3, the damper 3 may alternatively have two fixed portions 32 and one strip-shaped floating portion 31, as shown in fig. 2 and 4. The two fixing parts 32 are respectively distributed at the positions of the strip-shaped floating part 31 close to the two ends. The two fixed parts 32 are relatively small in size, and are not connected with each other except through the floating part 31. This structure can save the space occupied by the fixing portion 32, and can provide a supporting function for the floating portion 31 from both ends of the floating portion 31, so that the floating portion 31 receives a balanced supporting force. Optionally, an elastic portion 33 is connected between the floating portion 31 and the fixing portion 32, and the elastic portion 33 can provide a vibration space for the floating portion 31 to vibrate up and down. Meanwhile, traces are formed in the elastic portion 33, so that the electrical connection point 311 is electrically connected to the pad 321 or the conductive portion 322.
In other alternative embodiments, the fixed portion may also be a strip-shaped structure, and the fixed portion and the floating portion are distributed in a substantially parallel manner, and a folding ring is connected between the fixed portion and the floating portion.
The invention provides several alternative embodiments for the structural shape of the spring. In an alternative mode, as shown in fig. 2 and 4, the elastic portion 33 is a strip structure extending in an S-shaped bending manner. The S-shaped bar structure can provide a larger floating space, and a relatively small pulling force is applied to the floating portion 31.
The elastic part can also be a sheet-shaped arc-shaped bulge structure extending from the fixed part to the floating part, and the structure is similar to the corrugated structure of the vibrating diaphragm. The protruding direction of the sheet-shaped arc-shaped protruding structure can be a direction towards the vibrating diaphragm or a direction away from the vibrating diaphragm. The elastic part of the embodiment can provide larger traction force, and plays a certain role in limiting the vibration of the floating part and the voice coil. Moreover, the elastic part is more convenient for arranging circuits.
The elastic portion may have a sheet-like wavy structure extending from the fixed portion to the floating portion. The structure form is similar to the continuous folding ring and the reverse folding ring structure on the diaphragm.
In another alternative embodiment, there is one pad on each of the four fixing portions formed by the two centering fins. Each pad is close to one electric connection point, and the pad is electrically connected with the close electric connection point. In this embodiment, the pad also functions as an electrical connection to an external circuit. Each electric connection point is connected with one pad, so that circuit wiring in the centering branch sheet can be greatly omitted, and the electric connection points can be directly conducted with an external circuit through the corresponding pads and are connected into a signal loop. Each of the pads is exposed from an outer surface of the sound emitting device.
Alternatively, as shown in fig. 3 and 4, the voice coil 2 may have a rectangular structure, and the floating portions 31 of the two centering fins 3 are respectively attached to two short sides of the voice coil 2. The voice coil 2 is more likely to be polarized in a direction parallel to the long side, and the floating portion 31 located at the end of the long side (i.e., attached to the short side) can more effectively suppress the polarization of the voice coil.
As shown in fig. 4, the lead-through wire 4 preferably extends in a direction parallel to the long sides of the voice coil 2, and the two lead-through wires 4 are located on the outer peripheries of the two long sides of the voice coil 2. Thus, on the one hand, the lead-through wire 4 does not interfere with the vibration space of the voice coil 2; on the other hand, the extension form of the conducting wire is more space-saving, and other structures of the sound generating device convenient for providing fixing and limiting for the conducting wire. For example, the conducting wire may be arranged on a magnetic circuit system or a housing of the sound generating device. The magnetic circuit system or the shell can be provided with a positioning groove for limiting and the like.
The present invention provides an alternative embodiment for the distribution of the individual lead ends. The voice coil 2 is integrally formed by winding two voice coil 2 wires, and two incoming terminals 211 and two outgoing terminals 212 of the two voice coil 2 wires are respectively used as four lead terminals 21. As shown in fig. 3, the two incoming terminals 211 are arranged in a central symmetrical manner with respect to the center of the voice coil 2, the two outgoing terminals 212 are arranged in a central symmetrical manner with respect to the center of the voice coil 2, and the incoming terminals 211 and the outgoing terminals 212 are arranged in a symmetrical manner with respect to the center line of the voice coil 2.
The preferred lead end distribution mode is suitable for the winding process of the existing double-voice coil wire voice coil. The voice coil can be convenient the coiling become the distribution form of above-mentioned lead terminal. The present invention does not limit the distribution of the lead terminals of the dual voice coil.
Preferably, the two voice coil wires are connected into the circuit in parallel. Adopt two voice coil wire parallel connection to insert the mode of circuit, have the same resistance with single voice coil wire voice coil loudspeaker voice coil under the prerequisite, this two voice coil wire voice coil loudspeaker voice coils are thinner than the line footpath of single line for voice coil loudspeaker voice coil thickness is thinner, and the magnetic gap can be narrower, has higher BL value, and then improves vibration system's sensitivity, improves the free vocal performance of sound production.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (13)
1. A sound generating device, comprising:
the voice coil is formed by winding two voice coil wires, four lead ends are led out, and the vibrating diaphragm is connected to one side of the voice coil;
the two centering branch pieces are provided with conductive circuits for realizing the connection of the voice coil and an external circuit, each centering branch piece is provided with a floating part and a fixed part, the floating part is connected to the other side of the voice coil opposite to the vibrating diaphragm, the two centering branch pieces are distributed in a centrosymmetric mode relative to the center of the voice coil, and the fixed parts are fixed on the sound generating device;
two electrical connection points are formed on each floating part, and four lead ends on the voice coil are respectively connected to the four electrical connection points in a one-to-one correspondence manner; still include two lead-through lines, two the lead-through line is respectively with two the centering piece is located two first ends electricity connection of first side, is located two second ends of second side and carries out the electricity and connect.
2. The sound generating device of claim 1, wherein the sound generating device has two pads, two of the pads are formed on the fixing portion, one of the pads is electrically connected to two of the electrical connection points, the other pad is electrically connected to two of the other electrical connection points, and the pad is exposed on an outer surface of the sound generating device.
3. The sound generating apparatus as claimed in claim 2, wherein both of said lands are formed on a fixing portion of the same centering branch piece.
4. The sound generating apparatus as claimed in claim 2, wherein two of said lands are formed on the fixing portions of two of said centering branch pieces, respectively.
5. The sound generating device according to claim 3 or 4, wherein one of said pads is electrically connected to an electrical connection point on the other of said centering branch pieces, and is electrically connected to an electrical connection point on the other of said centering branch pieces through one of said conductive wires;
the other pad is electrically connected with the other electrical connection point on the centering branch sheet, and is electrically connected with the other electrical connection point on the other centering branch sheet through the other conductive wire.
6. The sound generating apparatus as claimed in claim 1, wherein a conductive portion is provided on the pilot wafer at a position close to the electrical connection point, and an end of the conductive wire is soldered to the conductive portion.
7. The sound generating device according to claim 1, wherein each centering branch piece has two fixing portions and a strip-shaped floating portion, the two fixing portions are respectively distributed at positions close to two ends of the strip-shaped floating portion, and an elastic portion is connected between the fixing portions and the floating portion.
8. The sound generating apparatus as claimed in claim 7, wherein the elastic portion is a strip-shaped structure extending in an S-shaped bending manner;
or the elastic part is a sheet-shaped arc-shaped bulge structure extending from the fixed part to the floating part, and the bulge direction of the sheet-shaped arc-shaped bulge structure faces the vibrating diaphragm or is far away from the vibrating diaphragm;
alternatively, the elastic portion has a sheet-like wavy structure extending from the fixed portion to the floating portion.
9. The sound generating device as claimed in claim 7, wherein each of the four fixing portions has a pad electrically connected to an adjacent one of the electrical connection points, and the pad is exposed on an outer surface of the sound generating device.
10. The sound generating apparatus as claimed in claim 1, wherein the voice coil is rectangular, and the floating portions of the two centering fins are respectively attached to two short sides of the voice coil.
11. The sound generating apparatus as claimed in claim 10, wherein the conducting wires extend in a direction parallel to the long sides of the voice coil, the conducting wires are respectively located at the peripheries of the two long sides of the voice coil, and the conducting wires are arranged on the magnetic circuit system or the casing of the sound generating apparatus.
12. The apparatus according to claim 1, wherein the two voice coil wires have four incoming ends and four outgoing ends, the two incoming ends are arranged symmetrically with respect to the center of the voice coil, the two outgoing ends are arranged symmetrically with respect to the center of the voice coil, and the incoming ends and the outgoing ends are arranged symmetrically with respect to the center line of the voice coil.
13. The apparatus according to claim 1, wherein said voice coil wires are connected in parallel to a circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/125468 WO2019205711A1 (en) | 2018-04-27 | 2018-12-29 | Sound emission device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810395897 | 2018-04-27 | ||
| CN201820623348 | 2018-04-27 | ||
| CN2018103958970 | 2018-04-27 | ||
| CN201820623348X | 2018-04-27 |
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| CN110418258A CN110418258A (en) | 2019-11-05 |
| CN110418258B true CN110418258B (en) | 2022-07-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112788502A (en) * | 2019-11-08 | 2021-05-11 | 歌尔股份有限公司 | Sound production device |
| CN112788497A (en) * | 2019-11-08 | 2021-05-11 | 歌尔股份有限公司 | Sound production device |
| CN112788496A (en) | 2019-11-08 | 2021-05-11 | 歌尔股份有限公司 | Centering support piece and sound production device |
| CN112788495A (en) * | 2019-11-08 | 2021-05-11 | 歌尔股份有限公司 | Centering support piece and sound production device |
| CN113079445B (en) * | 2020-01-06 | 2022-10-18 | 歌尔股份有限公司 | Elastic component and sound generating device |
| CN111641901B (en) * | 2020-05-08 | 2021-10-19 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN113645552A (en) * | 2021-08-31 | 2021-11-12 | 歌尔股份有限公司 | Sound production device for electronic device and electronic device |
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