CN114928799B - Double-sided sound production device and electronic equipment - Google Patents
Double-sided sound production device and electronic equipment Download PDFInfo
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- CN114928799B CN114928799B CN202210335426.7A CN202210335426A CN114928799B CN 114928799 B CN114928799 B CN 114928799B CN 202210335426 A CN202210335426 A CN 202210335426A CN 114928799 B CN114928799 B CN 114928799B
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- 230000009471 action Effects 0.000 description 7
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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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/127—Non-planar diaphragms or cones dome-shaped
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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
- 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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- 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
- H04R9/041—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
- H04R9/045—Mounting
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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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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
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- Multimedia (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The invention provides a double-sided sound production device and electronic equipment, wherein the device comprises a shell, two groups of vibration components and two groups of magnetic circuit components, wherein the two groups of vibration components and the two groups of magnetic circuit components are fixed with the shell, the vibration components comprise a double-hole vibrating diaphragm, a double-hole dome, two voice coils and two front covers, the double-hole dome is arranged on the double-hole vibrating diaphragm, the double-hole vibrating diaphragm comprises an outer side fixing part, an inner side fixing part and a through hole surrounded by the inner side fixing part, the outer side fixing part is fixed with the shell, and the inner side fixing part is fixed with the front covers; the magnetic circuit assembly comprises a central magnetic circuit, the top surface of the central magnetic circuit is fixed with the front cover, and the height of the top surface of the central magnetic circuit is higher than that of the double-hole dome; the two voice coils of each group of vibration components are respectively arranged in the magnetic fields of the corresponding magnetic circuit components. The invention can solve the problems of larger thickness, vibration elimination and the like when the traditional double-sided sound production device is applied to a whole machine.
Description
Technical Field
The invention relates to the technical field of sound production, in particular to a double-sided sound production device and electronic equipment.
Background
The sound generating device comprises a single sound generating device and a double-sided sound generating device, wherein the sound pressure level of the double-sided sound generating device far exceeds that of the single-sided sound generating device, and the vibration sense can be reduced when the device acts.
At present, when the double-sided sound production device is designed, only two single-sided sound production products are simply overlapped, so that the thickness is larger in the practical application process; particularly, when the double-sided sounding device is applied to the whole machine, at least one side of the double-sided sounding device generally adopts a side sounding mode, so that the double-sided sounding device occupies extremely large thickness in application, and difficulty is brought to design of the whole machine product.
Disclosure of Invention
In view of the above problems, the present invention is directed to a double-sided sound generating device and an electronic device, so as to solve the problems of the existing double-sided sound generating device that the thickness is large and the vibration is eliminated when the existing double-sided sound generating device is applied to a whole machine.
The invention provides a double-sided sound generating device, which comprises a shell, two groups of vibration components and two groups of magnetic circuit components, wherein the two groups of vibration components and the two groups of magnetic circuit components are fixed with the shell,
The vibration assembly comprises a double-hole vibrating diaphragm, a double-hole ball top arranged on the double-hole vibrating diaphragm, two voice coils fixed with the double-hole ball top and two front covers, wherein the double-hole vibrating diaphragm comprises an outer fixing part, an inner fixing part and a through hole surrounded by the inner fixing part, the outer fixing part is fixed with the shell, and the inner fixing part is fixed with the front covers;
The magnetic circuit assembly comprises a central magnetic circuit, the top surface of the central magnetic circuit is fixed with the front cover, the top surface of the central magnetic circuit is the top surface of the magnetic circuit assembly, and the height of the top surface of the central magnetic circuit is higher than that of the double-hole dome;
The two groups of magnetic circuit components are horizontally arranged, the two groups of vibration components are symmetrically arranged along the vibration direction of the vibration components, and the two voice coils of each group of vibration components are respectively arranged in the magnetic fields of the corresponding magnetic circuit components.
In addition, the double-hole diaphragm preferably comprises three folded ring parts, wherein,
The three ring folding parts are all inwards concave structures, namely a first ring folding part, a second ring folding part and a third ring folding part respectively, wherein,
The first folding ring part is connected with the shell through the outer fixing part, and the second folding ring part and the third folding ring part are respectively connected with the corresponding inner fixing part and the corresponding front cover.
In addition, it is preferable that the double-hole diaphragm includes a middle portion, wherein,
The intermediate portion is disposed between the first and second and third annular portions, and between the second and third annular portions.
In addition, the double-hole dome preferably comprises a dome body part and two avoidance spaces arranged in the region of the dome body part, wherein,
The dome body part is arranged on the middle part, and the two avoidance spaces are used for avoiding the two groups of magnetic circuit assemblies.
In addition, the structure is preferable that the double-hole dome and the double-hole vibrating diaphragm are integrated into a whole.
In addition, the preferred structure is that the number of the shells is two, and each shell is respectively fixed with the corresponding vibration assembly and the corresponding magnetic circuit assembly.
In addition, the preferred structure is that the vibration assembly further comprises two connecting frameworks, wherein the connecting frameworks are fixed with the voice coil, and the voice coil is fixed with the double-hole dome through the connecting frameworks.
In addition, the vibration assembly preferably further comprises a centering support piece, one end of the centering support piece is fixed with the connecting framework, the other end of the centering support piece is fixed with the shell, wherein,
The voice coil arranged on the connecting framework is connected with the shell through the centering support piece.
In addition, it is preferable that the magnetic circuit assembly further includes a side magnetic circuit, a magnetic gap is formed between the center magnetic circuit and the side magnetic circuit, wherein the two voice coils of each set of vibration assemblies are respectively disposed in the magnetic gaps of the corresponding magnetic circuit assemblies.
The invention also provides electronic equipment, which comprises a shell and the double-sided sound generating device arranged in the shell, wherein the double-sided sound generating device is arranged in the shell.
According to the double-sided sound production device and the electronic equipment, the two groups of magnetic circuit assemblies are horizontally arranged, the two groups of vibration assemblies are symmetrically arranged along the vibration direction of the vibration assemblies, the two voice coils of each group of vibration assemblies are respectively arranged in the magnetic gaps of the corresponding magnetic circuit assemblies, each group of magnetic circuit assemblies simultaneously drives the voice coils on the upper side and the lower side, and the two groups of vibration assemblies reversely vibrate to eliminate vibration sense; the structural design that the double-hole dome is lower than the top surface of the magnetic circuit is adopted, so that the front or side surface of the double-sided sound generating device can complete sound generating action.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Furthermore, the invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and attainments together with a more complete understanding of the invention will become apparent and appreciated by referring to the following description taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 is an exploded view of a two-sided sound emitting device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a dual-hole diaphragm and dual-ring ball top structure according to an embodiment of the invention;
FIG. 3 is a schematic perspective view of FIG. 2;
FIG. 4 is a cross-sectional view taken along line C-C of FIG. 3;
FIG. 5 is a schematic perspective view of a dual-sided sound generating device according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
FIGS. 7 and 8 are sectional views taken along line B-B of FIG. 5, respectively;
fig. 9 is an enlarged partial schematic view of fig. 8.
Wherein reference numerals include: 10. the first vibration unit, 11, first double-hole diaphragm, 111, outer fixing portion, 112, first collar portion, 113, second collar portion, 114, third collar portion, 115, first intermediate portion, 116, first inner fixing portion, 117, second inner fixing portion, 121, first front cover, 122, second front cover, 13, first double-hole dome, 131, first escape space, 132, second escape space, 133, first dome body portion, 141, first connection frame, 142, second connection frame, 151, first voice coil, 152, second voice coil, 16, centering support piece, 20, second vibration unit, 21, second double-hole diaphragm, 221, third front cover, 222, fourth front cover, 23, second double-hole dome, 241, third connection frame, 242, fourth connection frame, 251, third voice coil, 252, fourth voice coil, 26, support piece, 30, first magnetic circuit assembly, 310, center magnet, 311, first center magnet, 39, 321, second center magnet, 312, second center magnet, 39, 340, first side magnet, 39, 35, second side magnet, 39, 33, second side magnet, 39, 35, first side magnet, 33, second magnet, 39, 35, second side magnet, 39, 33, third side magnet, 39, 35, third magnet, 35, third side, 33, fourth magnet, 35, third side, center magnet, 39, 35, third side, center magnet, 35, third side, center magnet, 39, and so as shown.
The same reference numerals will be used throughout the drawings to refer to similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Aiming at solving the problems of larger thickness, reduced sound leakage, vibration elimination and the like when the conventional double-sided sound generating device is applied to a whole machine, the invention provides a double-sided sound generating device and electronic equipment.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
For the purpose of illustrating the structure of the double-sided sound emitting device provided by the present invention, fig. 1 to 9 are exemplary labels for the double-sided sound emitting device from different angles, respectively. Specifically, FIG. 1 illustrates a two-sided sound emitting device exploded structure in accordance with an embodiment of the present invention; FIG. 2 illustrates a dual-hole diaphragm and dual-ring ball top structure in accordance with an embodiment of the present invention; FIG. 3 is a perspective view of the structure of FIG. 2; FIG. 4 shows the cross-sectional structure of FIG. 3 along C-C; FIG. 5 illustrates a two-sided sound emitting device perspective structure in accordance with an embodiment of the present invention; FIG. 6 shows the cross-sectional structure of FIG. 5 along A-A; FIGS. 7 and 8 show the cross-sectional structure of FIG. 5 along B-B, respectively; fig. 9 shows a partially enlarged structure of fig. 8.
As shown in fig. 1 to 9 together, the double-sided sound generating device provided by the invention comprises a shell, two groups of vibration components and two groups of magnetic circuit components, wherein the two groups of vibration components and the two groups of magnetic circuit components are fixed with the shell, the vibration components comprise a double-hole vibrating diaphragm, a double-hole dome arranged on the double-hole vibrating diaphragm, two voice coils fixed with the double-hole dome and two front covers, the double-hole vibrating diaphragm comprises an outer fixing part, an inner fixing part and a through hole surrounded by the inner fixing part, the outer fixing part is fixed with the shell, the inner fixing part is fixed with the front covers, and the front covers cover covers the through hole; the magnetic circuit assembly comprises a central magnetic circuit, the top surface of the central magnetic circuit is fixed with the front cover, the top surface of the central magnetic circuit is the top surface of the magnetic circuit assembly, and the height of the top surface of the central magnetic circuit is higher than that of the double-hole dome; the two groups of magnetic circuit components are horizontally arranged, the two groups of vibration components are symmetrically arranged along the vibration direction of the vibration components, and the two voice coils of each group of vibration components are respectively arranged in the magnetic fields of the corresponding magnetic circuit components
Specifically, the double-sided sound generating device of the present invention includes a housing, a first vibration assembly 10, a second vibration assembly 20, a first magnetic circuit assembly 30, and a second magnetic circuit assembly 40 fixed to the housing, wherein the first vibration assembly 10 includes a first double-hole diaphragm 11, a first double-hole dome 13 disposed on the first double-hole diaphragm 11, a first voice coil 151 and a second voice coil 152 fixed to the first double-hole dome 13, and a first front cover 121 and a second front cover 122, the first double-hole diaphragm 11 includes an outer fixing portion 111, a first inner fixing portion 116, and a second inner fixing portion 117, the outer fixing portion 111 is fixed to the first housing, the first inner fixing portion 116 is fixed to the first front cover 121, and the second inner fixing portion is fixed to the second front cover 122.
The second vibration assembly 20 includes a second dual-hole diaphragm 21, a second dual-hole dome 23 disposed on the second dual-hole diaphragm 21, a third voice coil 251, and a fourth voice coil 252, and a third front cover 221 and a fourth front cover 222, wherein the second dual-hole diaphragm includes an outer fixing portion, a first inner fixing portion, and a second inner fixing portion, the outer fixing portion is fixed with the second housing, the first inner fixing portion is fixed with the third front cover 221, and the second inner fixing portion is fixed with the fourth front cover 222. In an embodiment of the invention, the front cover is a magnetically permeable front cover.
Wherein the first magnetic circuit assembly 30 includes a first central magnetic circuit and a first side magnetic circuit, and a first magnetic gap is formed between the first central magnetic circuit and the first side magnetic circuit; the second magnetic circuit assembly 40 includes a second center magnetic circuit and a second side magnetic circuit, with a second magnetic gap formed therebetween.
The top surface of the first central magnetic circuit is fixed with the first front cover and the third front cover, the top surface of the first central magnetic circuit is the top surface of the first magnetic circuit assembly, and the height of the top surface of the first central magnetic circuit is higher than that of the first double-hole dome to form a first vibration space; the top surface of the second central magnetic circuit is fixed with the second front cover and the fourth front cover, the top surface of the second central magnetic circuit is the top surface of the second magnetic circuit assembly, and the height of the top surface of the second central magnetic circuit is higher than that of the second double-hole dome to form a second vibration space.
Wherein the first magnetic circuit assembly 30 and the second magnetic circuit assembly 40 are horizontally arranged, that is, the first magnetic circuit assembly 30 and the second magnetic circuit assembly 40 are arranged in a direction perpendicular to the vibration direction of the first vibration assembly 10, the first vibration assembly 10 and the second vibration assembly 20 are symmetrically arranged along the vibration direction of the first vibration assembly 10, the first voice coil 151 of the first vibration assembly 10 is arranged in a first magnetic gap of the first magnetic circuit assembly 30, the third voice coil 251 of the second vibration assembly 20 is also arranged in a second magnetic gap of the first magnetic circuit assembly 30, and the second voice coil 152 of the first vibration assembly 10 is arranged in a second magnetic gap of the second magnetic circuit assembly 40, and the fourth voice coil 252 of the second vibration assembly 20 is also arranged in the second magnetic gap; namely: the first magnetic circuit assembly 30 simultaneously drives the first voice coil 151 and the third voice coil 251 to vibrate, and the second magnetic circuit assembly 40 simultaneously drives the second voice coil 152 and the fourth voice coil 252 to vibrate, and the vibration direction of the first voice coil 151 and the second voice coil 152 is opposite to the vibration direction of the third voice coil 251 and the fourth voice coil 252, that is, the vibration direction of the first vibration assembly 10 is opposite to the vibration direction of the second vibration assembly 20, so that the vibration sense can be cancelled.
In the embodiments shown in fig. 2, 3 and 4, the dual-hole diaphragm includes three ring-folded portions, where the three ring-folded portions are all of an inward concave structure, and are respectively a first ring-folded portion, a second ring-folded portion, a third ring-folded portion, and a middle portion, where the first ring-folded portion is connected with the housing through the outer fixing portion, and the second ring-folded portion and the third ring-folded portion are respectively connected with the corresponding inner fixing portion and the corresponding front cover; the middle part is arranged between the first ring folding part and the second ring folding part and between the third ring folding part and the second ring folding part.
Since the first dual-hole diaphragm is the same as the second dual-hole diaphragm, the first dual-hole diaphragm is illustrated by way of example: the first dual-hole diaphragm 11 further includes a first ring portion 112, a second ring portion 113, a third ring portion 114, and a first middle portion 115, where the first ring portion 112 is connected to the first housing through an outer fixing portion 111, the second ring portion 113 is connected to the first front cover through a first inner fixing portion 116, and the third ring portion 114 is connected to the second front cover through a second inner fixing portion 117. The first middle portion 115 is disposed between the first and second annular portions 112, 113 and the third annular portion 114, and between the second and third annular portions 113, 114.
In the embodiment of the invention, the double-hole dome comprises a dome body part and two avoidance spaces arranged in the central area of the dome body part, wherein the dome body part is arranged on the middle part, and the two avoidance spaces are used for avoiding two groups of magnetic circuit assemblies. Because the second diplopore dome is the same with first diplopore dome, taking first diplopore dome as the example and carrying out the concrete explanation, first diplopore dome 13 includes first dome body portion 133, sets up the first space 131 and the second space 132 of dodging at first dome body portion 133, and first space 131 of dodging is used for dodging first magnetic circuit assembly 30, and second space 132 of dodging is used for dodging second magnetic circuit assembly.
Wherein, diplopore ball top and diplopore vibrating diaphragm are integrated into one piece structure. In the specific application, according to actual conditions, the double-hole dome and the double-hole vibrating diaphragm can be designed into an integrated structure, so that the double-hole dome and the double-hole vibrating diaphragm can be fixed more tightly.
In the embodiment of the invention, two groups of vibration components are symmetrically arranged on two groups of magnetic circuit components respectively to form two sound generating surfaces, a first sound generating surface and a second sound generating surface, and a double-hole vibrating diaphragm of the vibration component is lower than the top surface of a central magnetic circuit of the magnetic circuit component, so that when the vibration component is applied to a complete machine, the vibration component can be used as a sound radiation surface through the height difference. The heights of the first double-hole dome and the second annular dome are lower than the top surface of the central magnetic circuit in the magnetic circuit assembly, and the design structure can directly complete the sounding action through the front surface or the side surface of the sounding device when the electronic equipment is assembled and used.
In the embodiment of the present invention, the number of the housings is two, the first housing 50 and the second housing 60, and each housing is fixed to the corresponding vibration assembly, the magnetic circuit assembly, respectively.
In the embodiment of the invention, the vibration assembly further comprises two connecting frameworks and a centering support piece, wherein the connecting frameworks are fixed with the voice coil, and the voice coil is fixed with the double-hole dome through the connecting frameworks. One end of the centering support piece is fixed with the connecting framework, and the other end of the centering support piece is fixed with the shell, wherein the voice coil arranged on the connecting framework is connected with the shell through the centering support piece.
Specifically, the first vibration assembly 10 includes four centering brackets 16, two connection bobbins (a first connection bobbin 141 and a second connection bobbin 142), two voice coils (a first voice coil 151 and a second voice coil 152), that is: the first voice coil 151 is disposed on the first connection frame 141, the second voice coil 152 is disposed on the second connection frame 142, two centering pieces are disposed at corners of the first connection frame 14 and fixed to the first housing 50, and two centering pieces are disposed at corners of the second connection frame 142 and fixed to the first housing 50. Because the first connecting frame 141 and the second connecting frame 142 are fixed with the first double-hole dome 13, and are fixed with the first voice coil 151 and the second voice coil 152, namely: the first and second connection bobbins 141 and 142 connect the voice coils (the first and second voice coils 151 and 152) and the first dual-hole dome 13, and thus, the first and second voice coils 151 and 152 simultaneously provide driving force to the first dual-hole dome 13.
Similarly, the second vibration assembly 20 includes four centering support pieces 26, two connection frames (a third connection frame 241 and a fourth connection frame 242), two voice coils (a third voice coil 251 and a fourth voice coil 252), the third voice coil 251 is disposed on the third connection frame 241, the fourth voice coil 252 is disposed on the fourth connection frame 242, two centering support pieces are disposed at corners of the third connection frame 241 and fixed to the second housing 60, and two centering support pieces are disposed at corners of the fourth connection frame 242 and fixed to the second housing 60. The third connection frame 241 and the fourth connection frame 242 connect the voice coils (the third voice coil 251 and the fourth voice coil 252) and the second double-hole dome 23, and thus the third voice coil 251 and the fourth voice coil 252 simultaneously provide driving force to the second double-hole dome 23.
Further, in the practice of the present invention, the central magnetic circuit includes three central magnets 310 and two central washer 330, and the central magnets 310 are spaced apart by the central washer 330. The three center magnets 310 are a first center magnet 311 located at an upper layer, a second center magnet 312 located at a middle layer, and a third center magnet 313 located at a lower layer, respectively.
In the embodiment shown in fig. 5 to 8, the two sets of magnetic circuit assemblies are a first magnetic circuit assembly 30 and a second magnetic circuit assembly 40, respectively, wherein the first magnetic circuit assembly 30 comprises a first center magnetic circuit and a first side magnetic circuit. The first central magnetic circuit includes, in order from top to bottom, a first central magnet 311, a first central washer 331, a second central magnet 312, a second central washer 332, and a third central magnet 313; the first side magnetic circuit is surrounded by the first center magnetic circuit, and includes, from top to bottom, a first side magnet 321, a first side washer 341, a second side magnet 322, a second Bian Huasi, 342, and a third side magnet 323. The specific structure of the central magnetic circuit of the second magnetic circuit assembly 40 is identical to the specific structure of the first central magnetic circuit of the first magnetic circuit assembly 30, and the specific structure of the side magnetic circuits of the second magnetic circuit assembly 40 is identical to the specific structure of the first side magnetic circuit.
In the embodiment of the present invention, the magnetizing mode of the central magnetic circuit includes two modes, and different magnetizing modes are implemented according to the setting mode of the central magnet 310; the specific arrangement modes of the three center magnets are as follows: the three center magnets are a first center magnet 311 located at an upper layer, a second center magnet 312 located at a middle layer, and a third center magnet 313 located at a lower layer, respectively, the polarity of the magnetic pole at the end of the first center magnet 311 opposite to the second center magnet 312 is the same as the polarity of the magnetic pole at the end of the second center magnet 312 opposite to the first center magnet 311, and the polarity of the magnetic pole at the end of the second center magnet 312 opposite to the third center magnet 313 is the same as the polarity of the magnetic pole at the end of the third center magnet 313 opposite to the second center magnet 312.
That is, in the center magnetic circuit, three center magnets are arranged at intervals, and the first center magnet 311, the second center magnet 312, and the third center magnet 313 have a south pole and a north pole, respectively, wherein the south pole of the first center magnet 311 is arranged opposite to the south pole of the second center magnet 312, and the south pole of the other end of the second center magnet 312 is arranged opposite to the south pole of the third center magnet 313; or the north pole of the first center magnet 311 is disposed opposite to the north pole of the second center magnet 312, and the north pole of the other end of the second center magnet 312 is disposed opposite to the north pole of the third center magnet 313; thus, magnetic force lines of the center magnet are concentrated on the center magnetically permeable plate, the magnetic force lines pass through the voice coil via the center magnetically permeable plate, and driving force is improved.
Since the first vibration assembly 10 includes the first voice coil 151 and the second voice coil 152, the first voice coil 151 is sleeved outside the first center magnet 311 and the second center magnet 312 of the first magnetic circuit assembly 30, and the second voice coil 152 is sleeved outside the first center magnet and the second center magnet of the second magnetic circuit assembly 40; the first voice coil 151 and the second voice coil 152 are both ring-shaped structures having hollow regions, and a part of the first center magnet and a part of the second center magnet are both located in the hollow regions, namely: the first center magnet and the second center magnet of the first magnetic circuit assembly 30 simultaneously provide the magnetic field for the first voice coil 151, so that the first voice coil 151 vibrates under the simultaneous actions of alternating current passing through the first voice coil 151, the magnetic field of the first center magnet of the first magnetic circuit assembly 30 and the magnetic field of the second center magnet of the first magnetic circuit assembly 30; the first center magnet of the second magnetic circuit assembly 40 and the second center magnet simultaneously provide a magnetic field to the second voice coil 152, so that the second voice coil 152 vibrates under the simultaneous action of the alternating current passing through the second voice coil 152, the magnetic field of the first center magnet of the second magnetic circuit assembly 40, and the magnetic field of the second center magnet of the second magnetic circuit assembly 40.
Since the second vibration assembly 20 includes the third voice coil 251 and the fourth voice coil 252, the third voice coil 251 is sleeved outside the second center magnet and the third center magnet of the first magnetic circuit assembly 30, and the fourth voice coil 252 is sleeved outside the second center magnet and the third center magnet of the second magnetic circuit assembly 40; the third voice coil 251 and the fourth voice coil 252 are both ring-shaped structures having hollow regions, and a part of the second center magnet and a part of the third center magnet are both located in the hollow regions, namely: the second center magnet and the third center magnet of the first magnetic circuit assembly 30 simultaneously provide a magnetic field for the third voice coil 251, so that the third voice coil 251 vibrates under the simultaneous actions of the alternating current passing through the third voice coil 251, the magnetic field of the second center magnet of the first magnetic circuit assembly 30 and the magnetic field of the second center magnet of the third magnetic circuit assembly; the second center magnet and the third center magnet of the second magnetic circuit assembly 40 simultaneously provide magnetic fields for the fourth voice coil 252, so that the fourth voice coil 252 vibrates under the simultaneous actions of the alternating current passing through the fourth voice coil 252, the magnetic field of the second center magnet of the second magnetic circuit assembly 40, and the magnetic field of the third center magnet of the second magnetic circuit assembly 40.
In an embodiment of the invention, the side magnetic circuit comprises three side magnets 320 and two side washers 340, and the side magnets are arranged at intervals of Bian Huasi, wherein Bian Huasi is arranged on the housing. Specifically, the side magnetic circuit includes from top to bottom in proper order: the first side magnet 321, the first side washer 341, the second side magnet 322, the second Bian Huasi, and the third side magnet 323, at least one of the first side washer 341 and the second Bian Huasi is disposed on the housing, and in specific applications, the Bian Huasi may be injection molded on the housing and injection molded with the housing according to requirements.
In addition, the invention also provides electronic equipment, which comprises a shell and the double-sided sound generating device arranged in the shell, wherein the double-sided sound generating device is arranged in the shell. In the embodiment of the electronic device, reference may be made to the description of the embodiment of the double-sided sound generating device, which is not described herein.
According to the double-sided sound production device and the electronic equipment, the two groups of magnetic circuit assemblies are horizontally arranged, the two groups of vibration assemblies are symmetrically arranged along the vibration direction of the vibration assemblies, the two voice coils of each group of vibration assemblies are respectively arranged in the magnetic gaps of the corresponding magnetic circuit assemblies, each group of magnetic circuit assemblies simultaneously drives the voice coils on the upper side and the lower side, and the two groups of vibration assemblies reversely vibrate to eliminate vibration sense; and, adopt the structural design that diplopore ball top is less than the magnetic circuit top surface, can make the front or the side of two-sided sound generating mechanism accomplish the sound action.
The double-sided sound emitting device and the electronic apparatus according to the present invention are described above by way of example with reference to the accompanying drawings. It will be appreciated by those skilled in the art that various modifications may be made to the double-sided sound generating apparatus and electronic device as set forth in the foregoing invention without departing from the spirit of the invention. Accordingly, the scope of the invention should be determined from the following claims.
Claims (10)
1. A double-sided sound generating device comprises a shell, two groups of vibration components and two groups of magnetic circuit components which are fixed with the shell, and is characterized in that,
The vibration assembly comprises a double-hole vibrating diaphragm, a double-hole ball top arranged on the double-hole vibrating diaphragm, two voice coils fixed with the double-hole ball top and two front covers, wherein the double-hole vibrating diaphragm comprises an outer fixing part, an inner fixing part and a through hole surrounded by the inner fixing part, the outer fixing part is fixed with the shell, and the inner fixing part is fixed with the front covers;
The magnetic circuit assembly comprises a central magnetic circuit, the top surface of the central magnetic circuit is fixed with the front cover, the top surface of the central magnetic circuit is the top surface of the magnetic circuit assembly, and the height of the top surface of the central magnetic circuit is higher than that of the double-hole dome;
The two groups of magnetic circuit components are horizontally arranged, the two groups of vibration components are symmetrically arranged along the vibration direction of the vibration components, and the two voice coils of each group of vibration components are respectively arranged in the magnetic fields of the corresponding magnetic circuit components.
2. The dual sided sound generating apparatus of claim 1,
The double-hole vibrating diaphragm comprises three folded ring parts, wherein,
The three ring folding parts are all inwards concave structures, namely a first ring folding part, a second ring folding part and a third ring folding part respectively, wherein,
The first folding ring part is connected with the shell through the outer fixing part, and the second folding ring part and the third folding ring part are respectively connected with the corresponding inner fixing part and the corresponding front cover.
3. The dual sided sound generating apparatus of claim 2,
The dual-hole diaphragm includes a middle portion, wherein,
The intermediate portion is disposed between the first and second and third annular portions, and between the second and third annular portions.
4. The double-sided sound generating apparatus according to claim 3,
The double-hole dome comprises a dome body part and two avoidance spaces arranged in the region of the dome body part, wherein,
The dome body part is arranged on the middle part, and the two avoidance spaces are used for avoiding the two groups of magnetic circuit assemblies.
5. The double-sided sound generating apparatus according to claim 3,
The double-hole dome and the double-hole vibrating diaphragm are of an integrated structure.
6. The dual sided sound generating apparatus of claim 1,
The number of the shells is two, and each shell is respectively fixed with the corresponding vibration component and the corresponding magnetic circuit component.
7. The double-sided sound generating apparatus according to claim 6,
The vibration assembly further comprises two connecting frameworks, the connecting frameworks are fixed with the voice coil, and the voice coil is fixed with the double-hole dome through the connecting frameworks.
8. The double-sided sound generating apparatus according to claim 7,
The vibration component further comprises a centering support piece, one end of the centering support piece is fixed with the connecting framework, the other end of the centering support piece is fixed with the shell, wherein,
The voice coil arranged on the connecting framework is connected with the shell through the centering support piece.
9. The dual sided sound generating apparatus of claim 1,
The magnetic circuit assembly further comprises a side magnetic circuit, a magnetic gap is formed between the central magnetic circuit and the side magnetic circuit, and two voice coils of each group of vibration assemblies are respectively arranged in the magnetic gap of the corresponding magnetic circuit assembly.
10. An electronic device comprising a housing and a double-sided sound emitting device disposed within the housing, wherein the double-sided sound emitting device employs the double-sided sound emitting device of any one of claims 1-9.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209283487U (en) * | 2019-01-15 | 2019-08-20 | 歌尔科技有限公司 | Two-sided microphone device and electronic product |
| CN111698621A (en) * | 2019-03-14 | 2020-09-22 | 歌尔股份有限公司 | Sound production device and electronic product |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201967118U (en) * | 2011-01-06 | 2011-09-07 | 瑞声光电科技(常州)有限公司 | Novel mini-type loudspeaker |
| US20150110335A1 (en) * | 2013-10-10 | 2015-04-23 | Knowles Electronics, Llc | Integrated Speaker Assembly |
| CN211959524U (en) * | 2019-12-30 | 2020-11-17 | 瑞声科技(新加坡)有限公司 | Sound production device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209283487U (en) * | 2019-01-15 | 2019-08-20 | 歌尔科技有限公司 | Two-sided microphone device and electronic product |
| CN111698621A (en) * | 2019-03-14 | 2020-09-22 | 歌尔股份有限公司 | Sound production device and electronic product |
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